Carriage conveyor

Desktop conveyor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport apparatus in which a transporting trolley that can be supported while walking in a certain walking path is disposed in a walking path sad and is pushed by a friction drive device. According to the prior art, the trolley type transport apparatus is used in an assembly process such as an automobile, and the straight forward moving path of the transporting trolley is used as a constant speed continuous conveying device, and the driving device for propelling the trolley in the straight moving path It is a driving friction surface which is formed in parallel with the traveling direction of each of the carriages on the left and right side surfaces of the carriage of the carriage, and is propped by the trolley which is disposed at the starting end and is pressed against the driving friction surface. It is constituted by a friction drive wheel, and the trolley in front of the vehicle is driven by the protrusion on the respective vehicles. Problem to be Solved by the Invention The above-described trolley type transport apparatus is provided with a return walking path for returning the trolley from the terminal of the straight-moving path to the start end of the straight-moving path, but moving the trolley from the terminal of the straight-moving path Returning to the return route of the exit bus used at the beginning of the return walking path, and the trolley moving from the terminal of the return walking path to the return path of the entrance and the trolley used at the beginning of the straight walking path, the trolley must be set at both ends to make the trolley The direction is changed by the right-angled lateral walking path of the turntable, or the turntable with the turntable for changing the direction of the trolley, and the problem is that the equipment for steering the trolley is very expensive. SUMMARY OF THE INVENTION The object of the present invention is to provide a trolley type conveying apparatus which can solve the above-mentioned problems, and in order to achieve the object, the present invention provides a trolley type conveying apparatus having the following constituent features. In other words, the trolley type transport apparatus of the present invention is configured to include a main walking line and a sub-traveling line provided in the traveling path of the bogie, and a plurality of transporting carts, and each of the transporting carts is provided with a frictional surface for main driving. And the friction surface for the auxiliary drive, the friction surface for the main drive is formed on the right and left sides of the carriage of the carriage or at a position parallel to the direction of the movement, and the friction surface for the secondary drive is formed. The lower jaw of the carrying platform is formed on the upper surface of the rod-shaped body which is parallel to the walking direction in the central portion in the left-right width direction, and the main walking line is formed by a straight-moving walking path, which is provided with each trolley The main drive driving device for the friction drive wheel that is pressed by the friction surface is mainly disposed at an appropriate interval along the traveling direction of the carriage, and is crimped to the friction surface of the sub drive for each of the transport vehicles. A sub-propulsion drive device for the friction drive wheel. In the trolley type conveying apparatus of the present invention configured as described above, a bearing table having sufficient strength is used from the main walking line formed by the straight moving path By the conventional method, the trolley is strongly propelled by the friction drive, and the auxiliary walking line other than the main walking line is made of a rod-shaped body which is attached in parallel with the traveling direction in the central portion in the left-right width direction of the carrying platform. The frictional surface for the sub-drive formed on the crotch surface causes the carriage to be frictionally driven. Even when there is a curved travel path for bending and moving the bogie in the sub-travel line, the sub-drive friction of the curved travel path The lateral movement trajectory has a small amount of deviation in the lateral direction, and the friction driving wheel crimped to the secondary driving friction surface is more or less movable in the lateral direction, so that the trolley can smoothly follow the curved walking path. And advance. That is, according to the configuration of the present invention, the main walking line formed from the straight-moving path can be utilized as an operating line of the actual trolley in which the conveyed object is carried and the load is large. On the other hand, in the auxiliary walking line, the curved driving path which is difficult to push the trolley smoothly in the friction driving device used in the main walking line, although it can be freely planned according to the needs, the opposite side The large frictional driving force is not able to cope with the strength, and the secondary walking line is used as the return walking line of the empty trolley after the unloaded object is removed, and the return walking line (the vice walking line) On the one hand, the trolley is moved on the one hand, and on the other hand, the direction of the change is made and the curved walking path is appropriately grouped, so that it is not necessary to use the turntable for changing the direction of the trolley or the turntable for carrying the turntable. As a result, the cost of the entire device can be greatly reduced. Further, in the above-described configuration of the present invention, the main driving line is provided with the main propulsion driving device at the beginning end portion, and the terminal portion can be provided with a braking device for preventing the bogie from moving beyond a certain speed. According to this configuration, the main propulsion driving device at the starting end portion pushes the respective carts into the main walking line in order, and in the entire field of the main walking line, a plurality of transporting trolleys are connected. In the state in which all of the transporting trolleys are in the state of being pushed forward and the vehicle is being driven forward at a constant speed, the trolley can be fully utilized in the assembly line of the automobile or the like. Further, under the carrying table of the transporting trolley, a central rod-shaped body fixed in the field of the central portion of the traveling table in the moving direction is attached, and the front and rear ends of the central rod-shaped body are not provided from the front and rear of the carrying platform. The ridge rod and the rear rod are respectively connected to each other so as to be horizontally swayable, and the side surfaces of the rods are formed to extend over the entire length of each of the rods from the stage. a buckling secondary drive friction surface, the front and rear ends of the center rod, the front end of the front sill rod, and At the rear end of the sill bar, a trolley that engages with a guide rail laid along the walking line is provided. According to this configuration, the radius of curvature of the curved travel path in the sub-walking line can be made small, and the interval of the sub-propulsion driving device disposed on the sub-travel line can be increased, thereby further reducing the equipment cost. .

Fig. 1A is a schematic plan view showing an example of the arrangement of the trolley walking line, and Fig. B is a front view showing the trolley in the main walking line and its main propulsion driving device; and Fig. 2 is a front view for conveying A plan view of a trolley; a third side view showing a partial longitudinal section of the transport trolley in the walking line; and a fourth side view showing a side cut side of the frictional drive rod assembly constituting the auxiliary friction surface of the transporting trolley. Fig. 5 is a plan view showing the sub-propulsion driving device used in the straight-moving path; Fig. 6 is a partial longitudinal sectional view showing the sub-propulsion driving device in Fig. 5; FIG. 8 is a plan view showing a sub-propulsion driving device used in a curved walking path; FIG. 9 is a plan view showing a sub-propulsion driving device in FIG. A plan view is used; Fig. 10 is a view of the direction of the arrow X in Fig. 8.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION In Fig. 1A, reference numeral 1 is a main walking line for assembly work, which is formed by a straight-moving path, and is provided at the beginning end portion thereof for displacing the transporting carriage 2 from the rear portion. The main propulsion driving device 3 is provided with a brake device 4 for preventing the transporting carriage 2 from moving beyond a certain speed at the end portion. 5 is for returning the transporting carriage 2 from the terminal of the main traveling line 1 to the beginning. In the sub-traveling line, the sub-propulsion driving devices 6A, 6B for propelling the transporting bogie 2 at the next high speed are arranged at intervals shorter than the entire length of the transporting cart 2. As shown in Fig. 1, Fig. 2, and Fig. 3, the transporting carriage 2 has a long and narrow rectangular carrying frame 7 in the moving direction, and the lower side of the carrying platform 7 is provided with a pair of left and right, and two groups of front and rear. The free wheel 9 and the rod-shaped assembly 10 for friction drive. Each of the freewheels 9 is rotated on a pair of flat rails 8a, 8b (only the original bed surface is used) of the H-shaped steel placed along the left and right sides of the bed surface on the walking path. The friction drive rod assembly 10 is formed of a center rod 11 , a front sill rod 13 , and a sill rod 14 . The center rod 11 is attached to the center of the left and right width directions of the stage 7 in parallel with the direction of movement, which is about 1/3 of the length of the entire length of the stage 7, and the front rod 13 is in the center. The front end of the body 11 is connected to the left and right horizontally around the vertical axis via the connecting device 12a, and the rear side bar 14 is around the vertical axis via the connecting device 12b at the rear end of the central bar 11. The upper layer can be connected horizontally and horizontally. Further, the center bar 11 is provided with a contact wheel 16 to 19 on the lower side of the front and rear ends, the lower side of the front side of the front side bar 13 and the lower side of the rear side of the rear bar 14. A pair of left and right contact roller guides 15 that are engaged with the respective contact wheels 16 to 19 are laid at intermediate positions between the two flat guide rails 8a, 8b. As shown in Fig. 4, the contact wheels 16, 17 supporting the front and rear ends of the center rod 11 are rotatable around the vertical fulcrums 16a, 17a forming the rocking center of the coupling means 12a, 12b, and have a front and rear The vertical shaft rollers 16b, 17b are fitted between the pair of left and right contact wheel guides 15, and the contact wheels 18, 19 of the front and rear rods 13, 14 can be rotated around the front and rear rods 13, 14 The vertical support shafts 18a, 19a have a pair of front and rear vertical shaft rollers 18b, 19b that are fitted between the pair of right and left contact wheel guides 15, and are respectively engaged with the left and right pair of contact wheel guides 15 Left and right pair Two sets of horizontal axis rollers 18c, 19c. The transporting carriage 2 having the above configuration has a pair of left and right main drive friction surfaces 20a and 20b formed by left and right side surfaces parallel to the direction in which the carriage 7 is moved, and a frictional drive rod assembly 10 The auxiliary drive friction surfaces 21a and 21b formed by the right and left sides of each of the rod-shaped bodies 11, 13, 14 are horizontally bent. Moreover, the friction drive rod assembly 10 isThe full length, that is, the length between the front and rear contact wheels 18, 19 is not protruded from the front and rear of the stage 7, but is configured to be shorter than the total length of the stage 7. Further, a conveyance support table 22 for supporting the conveyed object W at a fixed position is attached to the top of the stage 7. The main propulsion drive unit 3 is a friction drive wheel 23 that is pressed by the main drive friction surface 20a of the transport carriage 2 and is driven by the motor 23a, as shown in Fig. 1, and is crimped. The support roller 24 of the main driving friction surface 20b on the opposite side may have a structure in which the friction driving wheels 23 driven by the motor are pressed against the main driving friction surfaces 20a and 20b on both sides, as the case may be. It is also possible to use a structure in which the friction driving wheel 23 is only pressed against the main driving friction surface 20a or 20b of the single turn. Further, although the brake device 4 can also be configured in the same manner as the main propulsion drive device 3, in this case, the friction drive wheel 23 of the brake device 4 is a peripheral speed of the friction drive wheel 23 than the main propulsion drive device 3. Driven under a few low. Needless to say, the brake device 4 having the friction drive wheel 23 may be replaced by only the friction friction wheel that is not slid by the motor on at least one of the main drive friction surfaces 20a or 20b of the transport trolley 2, and the brake drive wheel. The sub-propulsion driving device 6A is disposed on the straight-moving path of the transporting cart 2, and the sub-propulsion driving device 6B is disposed on the curved walking path. As shown in FIGS. 5 to 7 , the sub-propulsion driving device 6A has crimping in the frictional surfaces 21a and 21b for the sub-drive surfaces of the two-side frictional rod-shaped assembly 10 of the transporting cart 2 The friction drive wheel 25 is driven by a motor driven by the frictional surface 21a of one of the sub-drivers. The gantry 27 of the motor 26 on which the friction drive 25 is mounted on the output shaft is supported by the periphery of the vertical support shaft 30 of the substrate 29 so as to be horizontally swayable, and the friction drive wheel 25 is pressed by the action of the spring 32. The direction in which the sub-drive friction surface 21a is attached is paid. The substrate 29 is integrally coupled at a position where the pair of right and left contact rails 15 are appropriately spaced, and is attached to the rail supporting plate 28 for mounting on the bed side. A stopper bolt 31 for restricting the swing range of the gantry 27 is mounted between the gantry 27 and the substrate 29, and the stopper bolt 31 is fitted in the spring 32. As shown in FIGS. 8 to 10, the sub-propulsion driving device 6B is crimped in the sub-driving friction surfaces 21a and 21b on both side faces of the frictional drive rod-like assembly 10 of the transporting carriage 2 Motor driven friction drive wheel 3 of one side drive friction surface 21a 3, and a support roller 34 having a frictional surface 21b for secondary drive that is crimped to the other side. A support stand 36 on which the motor 35 of the friction drive wheel 33 is mounted on the output shaft is supported by a swingable floor around the support shaft 38 which is perpendicular to the base plate 37 via the arm 39. The base plate 37 is on the left and right sides. The touch wheel guides 15 are integrally coupled at appropriate intervals, and are mounted on the rail support plate 28 for the bed side, and the coil springs 40 and the stoppers 41 are disposed together. The coil spring 40 is mounted between the gantry 36 and the substrate 37 in a state of being fitted to the vertical fulcrum 38, and the friction drive wheel 33 biases the gantry 36 in the direction in which the sub-drive friction surface 21a is pressed. The stopper 41 is attached to the base of the arm 39 by the coil spring 40 so that the rocking of the gantry 36 is butted against the substrate 37. Moreover, the gantry 36 is fixed with one end of the U-shaped arm 42 extending from the lower portion of the gantry 36 through the lower side of the roller guide 15 toward the opposing cymbal, and the other end of the U-shaped arm 42 is The support plate 43 supports that the rod 44 is supported by the vertical support shaft 45 at the front end of the support plate 43 so as to be horizontally freely supported, and the support roller 34 is supported on the tour end portion of the rod 44. Then, between the rod 44 and the support plate 43, a bolt 46 for restricting the swing range of the rod 44 is provided, and the support roller 34 is biased in the direction of the frictional surface 21b for driving the sub-driver 46. The bolt 46 is mounted in a state in which it is snapped. In the trolley type transport apparatus of the above-described configuration, the transporting carriage 2 supported by the free wheel 9 is formed on the flat guide rail 8 of the main walking wire 1 or the sub-traveling wire 5, and constitutes the bar-shaped assembly 10 for friction drive. Inside and outside the rod, at the front and rear ends of the central rod 11 fixed to the stage 7 Under the restriction, it is installed at the base of the arm 39. Moreover, the gantry 36 is fixed with one end of the U-shaped arm 42 extending from the lower portion of the gantry 36 through the lower side of the roller guide 15 toward the opposing cymbal, and the other end of the U-shaped arm 42 is The support plate 43 supports that the rod 44 is supported by the vertical support shaft 45 at the front end of the support plate 43 so as to be horizontally freely supported, and the support roller 34 is supported on the tour end portion of the rod 44. Then, between the rod 44 and the support plate 43, a bolt 46 for restricting the swing range of the rod 44 is provided, and the support roller 34 is biased in the direction of the frictional surface 21b for driving the sub-driver 46. The bolt 46 is mounted in a state in which it is snapped. In the trolley type transport apparatus of the above-described configuration, the transporting carriage 2 supported by the free wheel 9 is formed on the flat guide rail 8 of the main walking wire 1 or the sub-traveling wire 5, and constitutes the bar-shaped assembly 10 for friction drive. Inside and outside the rod, at the front and rear ends of the central rod 11 fixed to the stage 7 Under the restriction, it is installed at the base of the arm 39. Moreover, the gantry 36 is fixed with one end of the U-shaped arm 42 extending from the lower portion of the gantry 36 through the lower side of the roller guide 15 toward the opposing cymbal, and the other end of the U-shaped arm 42 is The support plate 43 supports that the rod 44 is supported by the vertical support shaft 45 at the front end of the support plate 43 so as to be horizontally freely supported, and the support roller 34 is supported on the tour end portion of the rod 44. Then, between the rod 44 and the support plate 43, a bolt 46 for restricting the swing range of the rod 44 is provided, and the support roller 34 is biased in the direction of the frictional surface 21b for driving the sub-driver 46. The bolt 46 is mounted in a state in which it is snapped. In the trolley type transport apparatus of the above-described configuration, the transporting carriage 2 supported by the free wheel 9 is formed on the flat guide rail 8 of the main walking wire 1 or the sub-traveling wire 5, and constitutes the bar-shaped assembly 10 for friction drive. Inside and outside the rod, at the front and rear ends of the central rod 11 fixed to the stage 7_，That is, the front and rear of the stage 7 are engaged with the touch wheel guide 15 via the contact wheels 16, 17, and can only move along the touch wheel guide 15. On the other hand, the ends of the rod-like bodies 13, 14 which are connected to the front and rear of the center rod 11 are also engaged with the wheel guide rails 15 via the contact wheels 18, 19, respectively. The friction drive rod assembly 10 composed of 14 holds the posture along the touch wheel guide 15. However, the transporting carriage 2 that is fed into the beginning end of the main walking wire 1 enters between the friction driving wheel 23 of the main propulsion driving device 3 and the supporting roller 24, and the friction driving wheel 23 driven by the motor. The friction surface between the main driving friction surface 20a which is the surface of the carrier 7 is advanced at a constant speed. Then, the main propulsion driving device 3 is sequentially fed into the transporting cart 2 of the main traveling line 1, and the front transporting cart 2 enters between the friction driving wheel 23 of the brake device 4 and the supporting roller 24. The speed is suppressed to be lower than the speed at which the preceding transporting carriage 2 is fed by the main propulsion driving device 3, and the main propulsion driving device 3 and the braking device 4, that is, the main traveling line 1 are transported. When the stage 7 of the carriage 2 is butted against each other, the main propulsion drive unit 3 is driven in the back. In other words, in the main walking line 1, there is a state in which the transporting trolley 2 is connected in the whole state, and each of the transporting carts 2 is integrated and continuously moves at a constant speed, and the main walking line 1 is paired. It is possible to use the components of the transported object W supported by the transported object support table 22 on each of the transporting carts 2, and to use them as an assembly line. Each of the transporting carts 2 that has been pushed out from the main walking line 1 enters the sub-traveling line 5, and is driven by the sub-propulsion driving devices 6A, 6B at a high speed, and individually moves away from the sub-moving line 5 one by one. , return to the beginning of the main walking line 1. In other words, when the transporting carriage 2 is in the straight-moving path of the sub-traveling line 5, the friction driving wheel 25 of the 6A is crimped to the friction-driven rod-shaped assembly 10 disposed under the carrying platform 7 On the frictional surface 21a for the sub-drive that is linearly connected, the friction drive wheel 25 is rotated by the motor 26 to be advanced at a predetermined speed. Then, when each of the transporting carts 2 passes through the curved travel path of the sub-traveling line 5, the friction drive wheels 33 of the sub-propulsion driving device 6B are pressed against the frictional drive rod-like assembly that is flexed along the touch rail 15 On the sub-drive friction surface 21a of 10, the friction drive wheel 33 is rotated by the motor 35 to advance the transport carriage 2 at a predetermined speed. Further, in the sub propulsion driving device 6A, The friction drive wheel 25, which is held at a predetermined position by the stopper bolt 31 and the spring 32, is pressed against the spring 32 by the frictional drive rod assembly 10 of the transfer carriage 2, and the friction drive wheel 25 is pressed against it. The sub-driving friction surface 21a of the friction drive rod-shaped assembly 10 is pressed against the action of the reaction force. Further, in the sub-propulsion driving device 6B, the support roller 34 and the friction drive wheel 33 which are held at predetermined positions by the bolt 46 and the spring 47 at the predetermined position are held by the stopper 41 and the coil spring 40. At a fixed position, the bar-shaped assembly 10 for friction drive of the transfer trolley 2 is pushed between the support roller 34 and the friction drive wheel 33, and the support roller 34 is pressed outward against the force of the spring 47, and the friction drive wheel is retracted. 33 is pressed against the auxiliary drive friction surface 21a of the friction drive rod assembly 10 by the reaction force thereof, and the friction drive wheel 33 and the support roller 34 resist the force of the coil spring 40, and Shake to the inside of the curved walking path of the auxiliary walking line 5. Therefore, when the transporting carriage 2 moves on the curved walking path, the intermediate portion of each of the rod-like bodies 11, 13, 14 of the friction-driving rod-shaped assembly 10 enters the inner side of the curved walking path to be flexed while the friction The driving rod-shaped assembly 10 is sandwiched by the friction driving wheel 33 and the supporting roller 34 from both sides, and is integrally shaken against the biasing force of the coil spring 40 around the vertical support shaft 38, and the friction driving wheel 33 is used for friction driving. The pressure contact force of the secondary driving friction surface 21a of the rod-shaped assembly 10 is not lowered, and the transporting carriage 2 is surely advanced along the curved walking path. Further, the arrangement of the entire walking line of the transporting cart 2 shown in Fig. 1 is an example, and can be freely arranged in accordance with the use. In this case, in order to change the moving height of the transporting carriage 2 on the walking line or to load or unload the conveyed object, the lifting device of the transporting trolley 2 may be incorporated, or the branching line that is divergent to the walking line may be grouped. In. Further, the main driving friction surfaces 20a and 20b provided on the carrier 7 of the transporting carriage 2 are preferably formed by the left and right sides of the loading table 7, and depending on the case, the left and right sides of the carrying table 7 In the vicinity, the other parts are attached in parallel with the direction of movement, and the side of the other parts can be used as the upper main driving friction surfaces 20a, 20b. The middle portion of the 14 is bent into the curved walking path, and the frictional driving rod assembly 10 is sandwiched by the friction driving wheel 33 and the supporting roller 34 from both sides to be integrated around the vertical support shaft 38. The frictional drive wheel 33 is oscillated against the force of the coil spring 40, and the pressure contact force of the friction drive wheel 33 against the auxiliary drive friction surface 21a of the friction drive rod assembly 10 is not lowered, so that the transport carriage 2 is surely moved along the curved travel path. Advance. Further, the arrangement of the entire walking line of the transporting cart 2 shown in Fig. 1 is an example, and can be freely arranged in accordance with the use. In this case, in order to change the moving height of the transporting carriage 2 on the walking line or to load or unload the conveyed object, the lifting device of the transporting trolley 2 may be incorporated, or the branching line that is divergent to the walking line may be grouped. In. Further, the main driving friction surfaces 20a and 20b provided on the carrier 7 of the transporting carriage 2 are preferably formed by the left and right sides of the loading table 7, and depending on the case, the left and right sides of the carrying table 7 In the vicinity, the other parts are attached in parallel with the direction of movement, and the side of the other parts can be used as the upper main driving friction surfaces 20a, 20b. The middle portion of the 14 is bent into the curved walking path, and the frictional driving rod assembly 10 is sandwiched by the friction driving wheel 33 and the supporting roller 34 from both sides to be integrated around the vertical support shaft 38. The frictional drive wheel 33 is oscillated against the force of the coil spring 40, and the pressure contact force of the friction drive wheel 33 against the auxiliary drive friction surface 21a of the friction drive rod assembly 10 is not lowered, so that the transport carriage 2 is surely moved along the curved travel path. Advance. Further, the arrangement of the entire walking line of the transporting cart 2 shown in Fig. 1 is an example, and can be freely arranged in accordance with the use. In this case, in order to change the moving height of the transporting carriage 2 on the walking line or to load or unload the conveyed object, the lifting device of the transporting trolley 2 may be incorporated, or the branching line that is divergent to the walking line may be grouped. In. Further, the main driving friction surfaces 20a and 20b provided on the carrier 7 of the transporting carriage 2 are preferably formed by the left and right sides of the loading table 7, and depending on the case, the left and right sides of the carrying table 7 In the vicinity, the other parts are attached in parallel with the direction of movement, and the side of the other parts can be used as the upper main driving friction surfaces 20a, 20b.

Component symbol comparison table

1 Main walking line 2 Transfer trolley 3 Main propulsion drive unit 4 Brake device 5 Sub-travel line 6A, 6B Sub-propulsion drive unit 7 Carrier table 8a, 8b Flat rail 9 Free wheel 10 Friction drive rod assembly 11 Central rod Shaped body 12a, 12b Connecting device 13 Front sad bar body 14 Rear sad bar body 15 Contact wheel guide 16~19 Contact wheel 16a, 17a Vertical fulcrum 16b, 17b Vertical axis roller 18a, 19a Support shaft 18b, 19b Vertical axis Rollers 18c, 19c Horizontal shaft rollers 20a, 20b Main drive friction surfaces 21a, 21b Secondary drive friction surfaces W Transported objects 22 Carrier support table 23 Friction drive wheels 24 Support rollers 25 Friction drive wheels 26 Motor 27 Mounts 28 Rails Support plate 29 Base plate 30 Support shaft 31 Upper bolt 32 Spring 33 Friction drive wheel 34 Support roller 35 Motor 36 Stand 37 Base plate 38 Vertical support shaft 39 Arm 40 Coil spring 41 Stop 42 U-shaped arm 43 Support plate 44 Rod 45 Vertical support shaft 46 bolt 47 spring