Tower construction

0001The present invention relates to assembling and disassembling mobile amusement rides that have towers. <patcit id="pcit0001" dnum="WO2004067126A1"><text>WO2004/067126 A1</text></patcit> discloses such an amusement ride.

0002Various amusement rides require the construction of a tower so that riders can enjoy the thrill of the ride at a great height. Many amusement rides are transportable, so that the owners can move them from one fairground site to another. However, where the ride involves a high tower, erection and subsequent disassembly of the tower typically requires heavy plant (usually a heavy crane) and considerable manpower.

0003Preferred embodiments of the present invention aim to provide methods of assembling and disassembling mobile amusement rides that have towers and that are improved in the foregoing respect.

0004<patcit id="pcit0002" dnum="WO9415041A1"><text>WO9415041A1</text></patcit> discloses a precision structural system, with claims to a precision planar structural truss and a three-dimensional structural framework; it discloses use of a jacking platform when forming a tower.

0005According to the present invention, there is provided a method comprising assembling and disassembling a mobile amusement ride having a tower on which a carrier is mounted such that the carrier can move up and down the tower, the carrier being arranged to carry riders; <ul id="ul0001" list-style="none" compact="compact"><li>the method further comprising the assembly steps of: <ol id="ol0001" compact="compact"><li>a. erecting an upright former;</li><li>b. assembling a first section of the tower around the former;</li><li>c. raising said first section of tower;</li><li>d. assembling a second section of the tower around the former;</li><li>e. connecting said first and second sections of the tower;</li><li>f. raising said first and second sections of the tower;</li><li>g. assembling a third section of the tower around the former;</li><li>h. connecting said second and third sections of the tower; and</li><li>i. mounting said carrier on the tower:</li></ol></li><li>the method further comprising the subsequent disassembly steps of: <ul id="ul0002" list-style="none" compact="compact"><li>j. disconnecting a lowermost section of the tower from the section above it;</li><li>k. disassembling and removing the lowermost section, and allowing the section above it to move down the former and then become in turn the lowermost section, which in turn is disassembled and removed; and</li><li>l. repeating steps j and k for subsequent sections of the tower that are disassembled and removed in turn.</li></ul></li></ul>

0006Preferably, the method further comprises the assembly step of repeating steps f, g and h for subsequent sections of the tower that are assembled in turn around the former and connected to the preceding sections of tower.

0007Preferably, said former is a column of open framework construction.

0008Preferably, said former has a height that is greater than any two consecutive sections of the tower when connected .

0009Preferably, each section of the tower is of substantially the same height.

0010Preferably, raising means for raising assembled sections of the tower is mounted on or adjacent said former.

0011Preferably, said raising means comprises a winch system mounted at least partly on said former.

0012Preferably, said raising means comprises at least one pneumatic or hydraulic ram.

0013Preferably, said tower is of open framework construction.

0014Said tower may be of substantially rectangular cross-section.

0015Said tower may be of substantially square cross-section.

0016Preferably, said tower sections are at least partly prefabricated or pre-assembled.

0017Preferably, partially prefabricated or pre-assembled sub-assemblies of said tower sections, when disassembled, are nested one with another for ready transport.

0018Preferably, each of said sub-assemblies is of right-angle configuration.

0019A method as above preferably further comprises the step of securing the tower to a support when the tower is completed.

0020Preferably, said former is carried on a transportable load bed.

0021Preferably, said load bed is a wheeled trailer for road or rail transport.

0022Preferably, said former is mounted on said load bed for pivoting movement between a first storage position in which the former extends substantially parallel to the load bed and a second working position in which the former is upright.

0023Preferably, step a is carried out with the assistance of a pneumatic or hydraulic ram that places the former in an upright position.

0024Preferably, the sections of the tower are of substantially uniform cross-section.

0025The amusement ride may comprise a drop-tower ride in which the carrier is moved towards the top of the tower and then allowed to drop in a free-fall manner.

0026The amusement ride may comprise a rotary swing ride in which the carrier or a part thereof rotates around the tower with riders suspended from the carrier.

0027Preferably, said first section is retained around the former after disassembly of the tower.

0028Preferably, the carrier and cables for operating the carrier are retained with said first section after disassembly of the tower.

0029The invention extends to a mobile amusement ride that has been assembled and disassembled by a method according to any of the preceding aspects of the invention.

0030For a better understanding of the invention, and to show how embodiments of the same may be carried into effect, reference will now be made, by way of example, to the accompanying diagrammatic drawings, in which: <ul id="ul0003" list-style="none"><li><figref idref="f0001">Figure 1</figref> is a side view of a transportable load bed that is formed from two road trailers and carries a former that extends generally parallel to the load bed;</li><li><figref idref="f0001">Figure 2</figref> is a side view similar to <figref idref="f0001">Figure 1</figref> but showing the former in an upright position;</li><li><figref idref="f0002">Figure 3</figref> is a plan view corresponding to <figref idref="f0001">Figure 2</figref>;</li><li><figref idref="f0002">Figure 4</figref> is a view similar to <figref idref="f0001">Figure 2</figref>, illustrating four parts of a first tower section to be assembled around the former;</li><li><figref idref="f0003">Figure 5</figref> is a simplified plan view of the former, with parts of a first tower section to be assembled around the former;</li><li><figref idref="f0003">Figure 6</figref> is a view similar to <figref idref="f0003">Figure 5</figref>, showing the first tower section assembled around the former;</li><li><figref idref="f0004">Figure 7</figref> is a view similar to <figref idref="f0002">Figure 4</figref>, showing the assembled first tower section being raised up the former;</li><li><figref idref="f0004">Figure 8</figref> is a view similar to <figref idref="f0004">Figure 7</figref>, showing the assembled first tower section raised up the former and a second tower section assembled below it, around the former;</li><li><figref idref="f0005">Figure 9</figref> is a view similar to <figref idref="f0004">Figure 8</figref>, showing an amusement ride tower constructed from five tower sections that have been assembled around the former and connected to one another; with two examples of a rider carrier at the top of the tower;</li><li><figref idref="f0006">Figure 10</figref> is a view similar to <figref idref="f0001">Figure 1</figref>, but showing an upper tower section stowed with a former;</li><li><figref idref="f0006">Figure 11</figref> is a view similar to <figref idref="f0006">Figure 10</figref> but showing the former and upper tower section in an upright position; and</li><li><figref idref="f0007 f0008">Figures 12 to 21</figref> are further simplified plan views similar to <figref idref="f0003">Figures 5 and 6</figref>, illustrating various shapes of formers and tower sections.</li></ul>

0031In the figures, like references denote like or corresponding parts.

0032It is to be understood that the various features that are described in the following and/or illustrated in the drawings are preferred but not essential. Combinations of features described and/or illustrated are not considered to be the only possible combinations. Unless stated to the contrary, individual features may be omitted, varied or combined in different combinations, where practical, within the scope of the appended claims.

0033In <figref idref="f0001 f0002">Figures 1 to 3</figref>, two road trailers 1 and 2 have road wheels 3 and are connected together at 4 to form an elongate load bed 5 on which a former 6 is carried. The former 6 is pivotally mounted on trailer 2 at pivotal mounts 7. One or more hydraulic or pneumatic ram 8 is pivotally connected to the trailer 2 and the former 6. In <figref idref="f0001">Figure 1</figref>, the former 6 is shown in a stowed position for transport, such that it extends generally parallel to the load bed 5.

0034In <figref idref="f0001">Figure 2</figref>, the former 6 has been pivoted into an upright position by the ram 8 and further secured in the upright position by further mounts 9 on the trailer 1.

0035As seen in <figref idref="f0001">Figures 1 and 2</figref>, the former 6 is of open framework or trussed construction. That is, it comprises elongate members 61 that are interconnected by horizontal and diagonal spars 62, to leave spaces between the parts 61, 62 and a substantially open space inside the former 6. However, the former 6 could be of an alternative construction - e.g. it may have substantially solid sides or be a substantially solid body.

0036The plan view of <figref idref="f0002">Figure 3</figref> shows stabilising legs 10 that extend from the trailers 1 and 2 and have adjustable feet 11 that engage the adjacent ground in order to support the trailers 1 and 2 such that the load bed 5 remains substantially horizontal and stable. Although four stabilising legs 10 are shown in <figref idref="f0002">Figure 3</figref>, any number may be provided to afford sufficient stability. The adjustable feet 11 may be adjusted electrically, pneumatically or hydraulically, and/or by a screw jack arrangement. Such stabilising legs are known per se.

0037The view of <figref idref="f0002">Figure 4</figref> is similar to that of <figref idref="f0001">Figure 2</figref>, but is simplified in that the road wheels 3, mounting points 7, 9 and ram 8 have been omitted. Also, the former 6 has been shown as a plain rectangle. A winch pulley 12 is mounted at the top of the former 6 and two cables 13 depend from the pulley 12. One or more ram 14 is provided at the base of the former 6.

0038Four parts 15 to 18 of a first tower section to be assembled are shown around the former 6. As illustrated diagrammatically in <figref idref="f0002">Figure 4</figref>, a first part 15 is placed into position behind the former 6 and a second part 16 in front of the former 6. A third part 17 is brought into position to the left of the former 6 and a fourth part 18 is brought into position to the right.

0039The plan view of <figref idref="f0003">Figure 5</figref> shows various components 21, 22 of the parts 15 to 18, around the former 6. Similar to the construction of the former 6 as shown in <figref idref="f0001">Figures 1 and 2</figref>, the parts 15 to 18 are of open framework or trussed construction, comprising elongate members 21 that are interconnected by horizontal and diagonal spars 22, to leave spaces between the components 21, 22. The components 21, 22 are shown partly assembled in <figref idref="f0002">Figure 4</figref> to make up the four parts 15 to 18 and are shown in exploded fashion in <figref idref="f0003">Figure 5</figref>, to illustrate their relationship with the former 6, as they are assembled around it. The parts 15 to 18 may be individually pre-assembled from the components 21, 22 in any desired manner, prior to the parts 15 to 18 being assembled together around the former 6. Examples of this are given in <figref idref="f0007 f0008">Figures 12 to 21</figref> and described further below.

0040<figref idref="f0003">Figure 6</figref> shows the parts 15 to 18 assembled around the former 6, to make a first tower section 31. The former 6 serves as a core around which the first tower section 31 is assembled or formed.

0041In <figref idref="f0004">Figure 7</figref>, the winch cables 13 have been attached to the first tower section 31 and the ram 14 engages the lower part of the tower section 31. The winch and ram 14 are actuated to lift the first tower section 31 up the former 6, until there is sufficient space below it to assemble a further tower section around the former 6. As an alternative, only one or the other of the winch cables 13 and ram 14 may be utilised.

0042In <figref idref="f0004">Figure 8</figref>, a second tower section 32 has been assembled around the former 6, in a similar manner to the first section 31. The first and second sections 31, 32 are connected together by a suitable connector and the cables 13 and/or ram 14 engaged with the second tower section 32. The cables 13 and/or ram 14 are then actuated to pull the second section 32 up the former 6, until there is sufficient space below it to assemble a third tower section around the former 6.

0043Further tower sections are then assembled around the former 6 in a similar manner, connected to the preceding sections and raised up the former 6, until the desired height of tower has been attained.

0044Two or more rams 14 may be used, either around the former 6 or conveniently placed inside it. Each ram 14 may incorporate a retractable hook that can be extended to engage a part of tower section to facilitate lifting of the tower section, and then retracted to disengage from the tower section, once the tower section is in place. Rams 14 may be operated in sequence such that a first ram (or set of rams) supports the tower as it is formed, whilst a second ram (or set of rams) engages the next tower section to be assembled, in order to lift the enlarged tower whilst the first ram (or set) is disengaged, ready to engage the next tower section to be assembled.

0045In <figref idref="f0005">Figure 9</figref>, five tower sections 31 to 35 have been assembled around the former 6 and interconnected to form a tower 30 that is supported on the load bed 5. Once the tower 30 has been completed, it may be supported by struts 37 or other means. The (or each) ram 14 may remain engaged with the lower end of the fifth tower section 35 or disengaged.

0046Instead of being of open framework or trussed construction, some or all of the tower sections 31 to 35 may be of different construction - for example, they may have solid sides, wholly or partly.

0047The tower 30 of <figref idref="f0005">Figure 9</figref> forms part of an amusement ride, which includes a ride carrier 40. A winch pulley 42 with cables 43 is mounted at the top of the first tower section 31, such that the cables 43 engage the ride carrier 40. By means of the winch pulley 42 and cables 43, the ride carrier 40 is caused to travel up and down the tower 30, with which the ride carrier 40 engages. Various different types of ride may be provided. <figref idref="f0005">Figure 9</figref> affords a split illustration of the ride carrier 40, in which the left side 44 (as seen) carries seating for riders to travel up and down the column as a "drop tower" ride, and the right side 46 suspends seats or harnesses 47 on links 48, such that riders may travel around the tower in the manner of a rotary "chair swing".

0048Typically, in a drop tower ride, riders are slowly raised up a tower until they attain a significant height, at which point they are suddenly dropped in a free-fall manner and then braked as they approach the ground. Typically, in a high chair swing ride, riders are raised up a tower until they attain a significant height, whilst being rotated around it. The riders may be moved up and down the tower as they are rotated around it.

0049It may be appreciated from the foregoing that the illustrated embodiment of the invention provides a very convenient method of constructing a tower for an amusement ride, without the need for heavy plant and, in particular, heavy cranes. It may be completely self-contained insofar as its assembly is concerned and save considerable amounts of time for both erection and subsequent disassembly.

0050It may readily be appreciated that disassembly is effectively the reverse of the assembly process as above described. Thus, winch cables 13 and/or ram(s) 14 engage the fourth tower section 34 to support the tower 30 whilst the lowermost section 35 is disconnected from the fourth tower section 34, disassembled and removed. The tower 30 is then lowered down the former 6 until supported on the load bed 5 or ram(s) 14. The next higher section 33 is then supported by the winch cables 13 and/or ram(s) 14 whilst the lower section 34 is disconnected, disassembled and removed - and so on.

0051Apart from the convenience afforded to the ride operator for initial erection of the tower and final disassembly, the relative ease of construction enables the tower to be taken down or at least reduced in height temporarily, in the event of severe weather conditions arising, thereby enhancing safety and reducing the chances of damage to the ride.

0052During construction, the ride carrier 40 may be assembled around the first tower section 31 whilst it is near ground level. Alternatively, it may be assembled around the tower 30 once the tower is completed - or at any convenient stage of construction.

0053In the arrangement of <figref idref="f0006">Figures 10 and 11</figref>, the uppermost tower section 31 remains assembled around the former 6, both during transport (<figref idref="f0006">Figure 10</figref>) and during assembly and disassembly of the tower (<figref idref="f0006">Figure 11</figref>). Likewise, the ride carrier 40, or at least a frame of it, remains assembled around the uppermost tower section, together with cables 43 that pass over pulleys 42 to be connected to the ride carrier 40 at one end and, at the other end, to a winch 25 that is mounted on the trailer 2. This arrangement can save valuable extra time during assembly and disassembly of the tower.

0054<figref idref="f0006">Figures 10 and 11</figref> illustrate wheels, rollers or slider blocks 49 to facilitate movement of the rider carrier 40 along the tower 30. The wheels, rollers or slider blocks 49 may be carried on the ride carrier 40 and/or the tower 30.

0055In <figref idref="f0006">Figures 10 and 11</figref>, both pivotal mounts 7 and securing mounts 9 are mounted on trailer 2. The ram 8 is pivotally mounted in the trailer 2 such that it may be retracted within the trailer 2 after use to raise or lower the former 6, as shown by dotted lines and reference 8a in <figref idref="f0006">Figure 11</figref>.

0056During construction, each of the tower sections 32 to 35 may be connected to the preceding tower section once assembly of the current tower section 32 to 35 is being completed. Alternatively, connection between successive tower sections may be affected whilst the lowermost tower section is being assembled.

0057Successive tower sections 31 to 35 may engage with one another by means of spigots and sockets that may be conically shaped to facilitate accurate inter-engagement of the sections. Pins, bolts or other connectors may be used to lock successive tower sections 31 to 35 together, once they have been successfully inter-engaged. Similar spigots and sockets may be used for engagement between the lowermost tower section 35 and the load bed 5.

0058Conveniently, the former 6 may have a height that is greater than any two consecutive sections of the tower 30. Alternatively, it may have a lower height.

0059The tower sections 31 to 35 may all be of substantially the same height or they may be of differing heights.

0060By way of example, each tower section 31 to 35 may have a height in the range 5 to 10 metres, and the overall height of the tower 30 may be of the order of 50 to 100 metres or more.

0061In the illustrated embodiment, the former 6 and the tower 30 are of substantially square cross-section. However, they may be of any cross-sectional geometrical shape, including polygonal, rectangular, hexagonal, octagonal, elliptical and circular. Examples of this are illustrated in <figref idref="f0007 f0008">Figures 12 to 21</figref>.

0062In <figref idref="f0007">Figure 12</figref>, uprights 21 and spars 22 are pre-assembled to form two tower section sub-assemblies 19, each of right-angle configuration with a full-width upright 21 at its apex and a reduced-width upright 21a at each end. The two sub-assemblies are then brought together such that opposing reduced-width uprights 21a are connected together by nuts and bolts or locking pins, to form a tower section around the former 6, as shown in <figref idref="f0007">Figure 13</figref>. It will be appreciated that this affords a rapid and convenient way to assemble and disassemble the tower sections. Once disassembled, the sub-assemblies 19 may be nested one with another for ready transport on a trailer or other transport device.

0063The reduced-width uprights 21a may have a width of about half that of a full-width upright 21 so that, when two are connected together, their combined width is substantially the same as that of a full-width upright 21.

0064<figref idref="f0007">Figures 14, 15 and 16</figref> show a square (or more generally, rectangular) former 6 around which various sub-assemblies 19 of differing configurations are assembled, like reference numerals denoting like or corresponding parts in all of <figref idref="f0007 f0008">Figures 12 to 21</figref>.

0065<figref idref="f0007">Figure 17</figref> shows a former 6 of triangular cross-section and sub-assemblies 19 to make up a tower section also of triangular cross-section around the former 6. In <figref idref="f0008">Figures 18 and 19</figref>, the former 6 and corresponding tower sections are hexagonal and octagonal respectively. <figref idref="f0008">Figures 20 and 21</figref> show formers 6 and tower sections of circular cross-section.

0066Conveniently, all of the tower sections 31 to 35 are of substantially uniform cross-section. This is useful where a device such as (for example) a ride carrier 40 is to run up and down the tower 30. However, the tower sections 31 to 35 may be of non-uniform cross-section. For example, they may be of reducing width from the bottom to the top of the tower.

0067The former 6 may engage the tower sections 31 to 35 by means of wheels carried on the former 6 and/or the tower sections 31 to 35, to facilitate movement of the tower sections 31 to 35 with respect to the former 6. <figref idref="f0008">Figures 20 and 21</figref> illustrate such wheels, rollers or slider blocks 29.

0068The road trailers 1 and 2 may be of the same or different lengths. Whilst the trailer 2 carries the former 6 for transport, the trailer 1 may carry parts for the tower 30. Rail trailers are also possible.

0069Although it is advantageous for the illustrated embodiment to be self-contained insofar as its assembly is concerned, it is possible also to utilise external equipment. For example, in many fairgrounds, small cranes are readily available and these may be used to raise completed tower sections 31 to 34 up the former 6, since they need to engage only a completed tower section towards the bottom of the tower, to lift the tower upwards.

0070Equipment for raising tower sections 31 to 34 may be mounted on the trailer 1 and/or 2, but not directly on the former 6.

0071In this specification, the verb "comprise" has its normal dictionary meaning, to denote non-exclusive inclusion. That is, use of the word "comprise" (or any of its derivatives) to include one feature or more, does not exclude the possibility of also including further features. The word "preferable" (or any of its derivates) indicates one feature or more that is preferred but not essential.