Deviation prevention structure for moving objects

Abstract

To prevent a deviation of a movable body from a rail without blocking its slide movement on the rail.SOLUTION: A deviation prevention structure of a movable body moving on a rail comprises a protection member installed on both lateral surfaces of the movable body, and a reaction receiving member installed away from the protection member on both sides across the rail.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present invention relates to a deviation prevention structure for a moving body that moves along a rail.

Background Art

[0002] For example, in a method of constructing a roof of a large - space structure such as a gymnasium or a factory, a slide construction method as disclosed in Patent Document 1 may be adopted.

[0003] In Patent Document 1, a scaffold is assembled near the gable wall portion on one side of a previously constructed framework, and using this scaffold, a steel - frame truss constituting the roof is assembled as one unit. Next, the assembled steel - frame truss is slid and moved toward the gable wall portion on the other side along a pair of rails extending in the girder direction provided on the framework for a width of one unit. After that, using the same scaffold, a subsequent steel - frame truss is assembled as one unit. This is added to the preceding steel - frame unit and is also slid and moved toward the gable wall portion on the other side along the pair of rails for a width of one unit. By repeating such operations, a steel - framed roof is constructed on the framework.

[0004] According to the above construction method, any of a plurality of steel - frame trusses can be assembled at a scaffold provided near the gable wall portion on one side of the framework. Therefore, it becomes possible to perform the assembly work of the steel - frame unit in a space - saving manner, and at the same time as the method of constructing the steel - framed roof, work under the roof can be carried out simultaneously using the space inside the framework.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In sliding construction methods, it is generally known that measures to prevent derailment, such as guides, are taken to prevent the moving steel truss from derailing from the rails due to unforeseen events such as earthquakes. However, in large-span structures such as soccer fields and stadiums, the steel units span even larger distances, resulting in greater expansion and contraction due to temperature and weight. Therefore, there is a risk that the guides installed on the steel units may come into contact with the rails during expansion, hindering sliding movement, and it is often difficult to install guides on the support parts of the moving body such as steel units.

[0007] This invention was conceived in light of these challenges, and its main purpose is to prevent the moving body from deviating from the rails without hindering its sliding movement on the rails. [Means for solving the problem]

[0008] To achieve this objective, the derailment prevention structure for a moving body of the present invention is a derailment prevention structure for a moving body that moves on rails, and is installed on both sides of the moving body. telescopic device And on both sides of the rail, telescopic device It comprises a reaction force receiving member installed at a distance from, The rails are provided on the top of each of the pair of wall bodies that constitute the large spatial structure, the reaction force receiving member is the rising wall of the wall body, and the expansion and contraction device is positioned to expand and contract toward the reaction force receiving member. It is characterized by the following:

[0009] The derailment prevention structure for a moving body of the present invention is characterized in that the moving body is a block obtained by dividing a roof structure that slides along the rail in the direction of travel.

[0011] According to the above-described derailment prevention structure for the moving body, the distance between the protective members installed on both sides of the moving body and the reaction force receiving members provided on both sides of the rail can be adjusted as appropriate.

[0012] This allows the protective member and the reaction force receiving member to avoid contact even when the moving body repeatedly expands and contracts in the direction perpendicular to its movement due to factors such as temperature and weight, enabling the moving body to slide smoothly along the rail. On the other hand, if an unforeseen event such as an earthquake occurs and the moving body shifts position relative to the rail, the protective member can be brought into contact with the reaction force receiving member to prevent the moving body from deviating from the rail.

[0013] Therefore, by adopting a structure to prevent the moving body from deviating in roof construction using the sliding method, and by providing protective members on blocks that divide the roof structure, which slides along the rails, in the direction of travel, it is possible to significantly improve the workability of the sliding method. Furthermore, if there is a rising wall next to the rails, this can be used as a reaction force receiving member, making it possible to construct a deviation prevention structure with a simple configuration and implement deviation prevention measures economically. [Effects of the Invention]

[0014] According to the present invention, by providing protective members on both sides of the moving body and installing reaction force receiving members on both sides of the rail with a gap between them and the protective members, it is possible to prevent the moving body from deviating from the rail without hindering its sliding movement. [Brief explanation of the drawing]

[0015] [Figure 1] This figure shows the roof of a large-span structure according to an embodiment of the present invention. [Figure 2] This figure shows a slide support and displacement prevention structure according to an embodiment of the present invention. [Figure 3] This figure shows a slide device according to an embodiment of the present invention. [Figure 4] This figure (Part 1) shows a schematic of roof construction using the sliding method in an embodiment of the present invention. [Figure 5] This figure (part 2) shows a schematic of roof construction using the sliding method in an embodiment of the present invention. [Figure 6]It is a diagram showing an outline of roof construction by the slide method in an embodiment of the present invention (Part 3). [Figure 7] It is a diagram showing a state where the roof structure in an embodiment of the present invention has been displaced with respect to the rail due to an unexpected situation. [Figure 8] It is a diagram showing a state where the deviation prevention structure in an embodiment of the present invention is functioning.

Embodiments for Carrying out the Invention

[0016] The present invention is a deviation prevention structure for a moving body that moves on a rail, and in particular, it is a deviation prevention structure suitable for the adoption of roof construction by the slide method. The details of the deviation prevention structure of the moving body will be described below with reference to FIGS. 1 to 8.

[0017] ≪≪Outline of Large-Space Structure and Slide Method≫≫ Prior to explaining the deviation prevention structure, the outline of the large-space structure and the outline of the slide method adopted in the roof construction of the large-space structure will be explained.

[0018] ≪Outline of Large-Space Structure≫ As shown in FIGS. 1(a) and (b), the large-space structure 1 is a building in which a roof 5, which is an upper structure, is supported by a pair of parallel wall bodies 2 that constitute a lower structure. The roof 5 includes a roof structure 3 made of a steel frame truss structure and a roof finishing material 4.

[0019] The roof finishing material 4 is provided on the roof structure 3 and may be any member that can handle rainwater, snow, etc. In addition, in the present embodiment, the roof finishing material 4 provided on the upper chord side of the roof structure 3 is taken as an example, but for example, an eaves panel provided on the lower chord side of the roof structure 3 may also be used.

[0020] The roof structure 3 is constructed to span a pair of wall bodies 2 and is formed by connecting multiple blocks arranged in parallel in the direction of extension of the wall bodies 2. In the plan view of Figure 1(b), an example is given in which three blocks, a front block 3a, an intermediate block 3b, and a rear block 3c, are connected by connecting steel frames 10.

[0021] As shown in Figure 1(a), the pair of wall bodies 2 are constructed on either side of the building space S, and a rising wall 22 is provided at the top of each wall body 2 along the outside. The rising wall 22 is not necessarily required, but in this embodiment, it is used in the deviation prevention structure 11 described later. A rail 21 is installed parallel to the rising wall 22, along the extending direction of the wall body 2. The rail 21 supports the front block 3a, the intermediate block 3b, and the rear block 3c, and also functions as a guide member when these blocks slide in the extending direction of the wall body 2.

[0022] The operation of sliding the front block 3a, intermediate block 3b, and rear block 3c along the rail 21 is performed using a slide support 6, a rail top surface material 21d provided on the rail 21, and a sliding device 13, as shown in Figures 2 and 3. The details will be explained below using the front block 3a as an example, but the intermediate block 3b and rear block 3c have a similar configuration.

[0023] ≪Slide support 6 and rail 21≫ As shown in Figure 2, the slide support 6 comprises a support body 61 and a sliding material 62 provided on the lower surface of the support body 61.

[0024] The support body 61 is provided on each column base 32 located above the wall 2 in the front block 3a, and a sliding material 62 is attached to its lower surface. The sliding material 62 is made of a resin plate or the like, and its lower surface is in contact with the rail upper surface material 21d.

[0025] The rail top surface material 21d is formed by smoothing the top surface of the rail 21 and applying a lubricant, or by attaching a stainless steel plate. In Figure 2, an H-beam is used for the rail 21, but any long member with a flat top surface can be used.

[0026] ≪Slide device 13≫ The sliding device 13 can employ any mechanism capable of sliding the front block 3a along the rail 21 in the direction of extension of the wall 2. For example, Figure 3(a) shows a mechanism in which the front block 3a is pulled by a plurality of synchronized hydraulic jacks 131.

[0027] Multiple hydraulic jacks 131 are installed with their extension direction facing the extension direction of the rail 21, for each support body 61 of the slide support 6 provided on the front block 3a. When extended, one end of each is connected to the front side of the support body 61, and the other end is detachably attached to the rail 21.

[0028] As a result, as shown in Figure 3(b), by retracting the hydraulic jack 131, the front block 3a can slide along the pair of rails 21 in the direction of extension of the wall 2 using the sliding support 6. The sliding device 13 with this configuration is automatically controlled in a central control room so that the amount of movement (movement speed) of the front block 3a is the same on the pair of rails.

[0029] <<Outline of roof construction using the sliding method>> The procedure for constructing the above roof 5 using the sliding method is roughly as follows:

[0030] First, as shown in Figure 4(a), a work stage 7 is set up using the building space S at one end of a pair of wall bodies 2. The work stage 7 is supported by a plurality of temporary support platforms 8 erected in the building space S. Then, as shown in Figure 4(b), the front block 3a is assembled on the work stage 7.

[0031] The front block 3a is assembled, for example, supported by an extension device 9 installed at a predetermined position on the work stage 7, as shown in Figure 5(a). The extension device 9 not only supports the front block 3a, but also controls the amount of extension of each part to cause it to bulge. In conjunction with these operations, it is advisable to install the support body 61 and sliding material 62 of the slide support 6 on the column base 32 located above the rail 21.

[0032] Next, the extension device 9 is jacked down, and the assembled front block 3a is supported on the pair of rails 21, as shown in Figure 5(b). Then, as shown in Figure 4(b), the assembled front block 3a is slid along the extension direction of the wall 2 on the rails 21.

[0033] Next, as shown in Figure 6(a), the intermediate block 3b is assembled on the work stage 7 after the front block 3a has moved. The assembled intermediate block 3b is then connected to the rear end of the front block 3a via the connecting steel frame 10, as shown in Figure 6(b), to construct the unit block 3d. This unit block 3d is then slid along the extension direction of the wall 2.

[0034] Repeating the same procedure, the three blocks, front block 3a, middle block 3b, and rear block 3c, are connected with steel frames 10 to construct the roof structure 3. After constructing the roof structure 3, or while constructing it, the roof finishing material 4 is attached to complete the construction of the roof 5.

[0035] In the roof construction using the sliding method described above, the blocks that make up the roof structure 3 (front block 3a, middle block 3b, and rear block 3c) are all assembled on a work stage 7 provided on one end of the wall 2. As shown in Figure 4(a), the work stage 7 can be economically constructed by utilizing only a portion of the building space S, and the remaining space in the building space S can be efficiently used for other work. Furthermore, since the work areas for the work performed in the building space S and the assembly work of the roof structure 3 do not interfere with each other, both tasks can be carried out in parallel and simultaneously.

[0036] Incidentally, if the above-mentioned sliding support 6 is used, for example, if an unforeseen event such as an earthquake occurs during the sliding operation, as shown in Figure 7, a positional displacement will occur in the front block 3a relative to the rail 21 during the sliding movement, and there is a risk that the front block 3a will deviate from the rail 21. This behavior is the same when the unit block 3d is sliding, as shown in Figure 6(b).

[0037] Therefore, when constructing the roof using the sliding method, a deviation prevention structure 11 is provided to prevent the front block 3a and unit block 3d from deviating from the rail 21. The structure of the front block 3a is explained below, using it as an example. A similar structure is also formed in the unit block 3d.

[0038] <<Deviation Prevention Structure>> As shown in Figures 2, 8(a) and 8(b), the deviation prevention structure 11 is composed of a plurality of expansion joints 12 and a rising wall 22 provided along the outside of the wall body 2.

[0039] The expansion joint 12 is installed on a steel column 31 located above the wall 2 in the front block 3a, with its expansion direction facing the wall surface of the rising wall 22. Figure 8(a) shows an example where a total of four expansion joints 12 are installed on the steel columns 31 located at the front and rear ends in the direction of travel of the front block 3a. However, the number is not limited to this, and for example, they may be installed on all steel columns 31 adjacent to the rising wall 22.

[0040] Any type of extension device 12 may be used as long as it has a structure that allows the length to be freely set. Figure 2 illustrates the case in which a hydraulic jack is used. In the extension device 12 consisting of a hydraulic jack, the cylinder 12c is fixed to the steel column 31. The ram 12a faces the rising wall 22, and a tip member 12b is provided at its tip. The tip member 12b is preferably made of an elastic material that will not damage the rising wall 22 when it comes into contact with it, such as synthetic rubber.

[0041] As shown in Figure 2, the deviation prevention structure 11 having the above configuration extends the telescopic device 12 by a predetermined amount when the sliding movement begins. A predetermined separation distance W1 is provided between the tip member 12b provided at the tip of the ram 12a and the rising wall 22. The separation distance W1 is set to a distance at which the tip member 12b and the rising wall 22 do not come into contact when the front block 3a expands in the direction perpendicular to the direction of travel. Furthermore, it is preferable to set the distance W1 to be the same as, or greater than, the upper limit of the allowable horizontal displacement of the front block 3a in the direction perpendicular to the direction of travel during the sliding movement operation.

[0042] As a result, under normal circumstances, even if the front block 3a repeatedly expands or contracts in the direction perpendicular to the direction of travel due to temperature, weight, etc., or if it experiences a horizontal displacement within an acceptable range in the direction perpendicular to the direction of travel, the expansion / contraction device 12 and the rising wall 22 will not come into contact. Therefore, the front block 3a can be slid smoothly along the rail.

[0043] On the other hand, if the front block 3a becomes misaligned relative to the rail 21, for example due to an earthquake, the tip member 12b of the telescopic device 12 will come into contact with the rising wall 22, as shown in Figure 8(b). This prevents the front block 3a from deviating from the rail 21.

[0044] As described above, by employing a structure to prevent the derailment of the moving body in roof construction using a sliding method, it is possible to prevent derailment from the rail 21 in the event of unforeseen circumstances such as an earthquake, without hindering the sliding movement of the front block 3a or unit block 3d under normal circumstances.

[0045] The roof construction method of the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0046] For example, in this embodiment, an expansion / contraction device 12 is used as a protective member in the deviation prevention structure 11, but it is not limited to this. Any member that can set a predetermined separation distance W1 between the rising wall 22 and the front block 3a may be used.

[0047] Furthermore, although a rising wall 22 is used in the deviation prevention structure 11 in this embodiment, it is not limited to this. If a rising wall 22 does not exist in the wall body 2, or if it exists but cannot be used, a member that functions as a reaction force receiving member when the tip member 12b of the telescopic device 12 comes into contact with it can be installed and used.

[0048] Furthermore, if shock-absorbing materials such as fenders and springs are used in the tip member 12b provided at the tip of the ram 12a that constitutes the telescopic device 12, the impact when the tip member 12b rises and hits the wall 22 can be absorbed. [Explanation of Symbols]

[0049] 1 Large space structure 2 wall 21 rails 21a Lower flange 21b Upper flange 21c Web 21d Rail top surface material 22. Rising wall (reaction force receiving member) 3. Roof structure 31 Steel columns 32 Pillar base 3a Front block 3b Intermediate block 3c Rear block 3D Unit Blocks 4. Roof finishing materials 5. Roof 6. Slide support 61 Bearing body 62 Lubricants 7 Work Stages 8. Temporary support platform 9 Telescopic device 10 Connecting steel frame 11. Deviation prevention structure 12. Expandable / contractable device (protective component) 12a Ram 12b Tip member 12c cylinder 13. Slide device 131 Hydraulic Jack

Claims

1. A structure for preventing a moving body from deviating from a rail, The telescopic devices are installed on both sides of the aforementioned mobile body, Reaction force receiving members are installed on both sides of the rail, spaced apart from the expansion / contraction device, Equipped with, The aforementioned rails are provided on the top of each of the pair of wall bodies that constitute the large spatial structure, The reaction force receiving member is the rising wall of the wall body, The extension device is arranged in a position that extends and retracts toward the reaction force receiving member, and is a structure for preventing deviation of a moving body.

2. In the derailment prevention structure for a moving body according to claim 1, A structure for preventing a moving body from deviating, characterized in that the moving body is a block obtained by dividing a roof structure that slides along the rail in the direction of travel.

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