Supporting device convenient to assemble

Abstract

The utility model discloses a supporting device convenient to assemble, which comprises two hollow stand columns which are oppositely arranged, inner columns are arranged in the stand columns, the bottom surfaces of the inner columns are inclined surfaces, and a jacking piece is arranged between the two stand columns. The jacking piece comprises a two-way sleeve column, double-screw bolts arranged at the two ends of the two-way sleeve column and jacking blocks arranged at the opposite ends of the two double-screw bolts respectively, the jacking blocks extend into the stand columns and make contact with the bottom face of the inner column, arched beams are arranged at the top ends of the two stand columns, and straight inserting columns are arranged at the two ends of each arched beam. During later disassembly, the jacking piece is reversely operated, connection between the arched beam and the arc-shaped formwork below the arched frame in the subway tunnel becomes loose, then the whole supporting structure can be put down and then disassembled, the working efficiency is effectively improved, the construction period is shortened, the labor cost is reduced, the cross beam can be used as a pipeline suspension frame during tunnel construction, and the construction period is shortened. Therefore, the investment cost of the suspension frame can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel support, and in particular relates to a support device which is easy to assemble. Background Art

[0002] When building a subway in a city, its construction method is greatly affected by factors such as ground buildings, roads, urban traffic and financial conditions. During construction, it is necessary to support and protect the tunnel while it is under construction to prevent landslides and surface subsidence in the tunnel under construction, and to reduce the impact on existing buildings.

[0003] During tunnel construction, workers need to support the concrete through formwork and formwork support structures when pouring concrete. Normally, the top wall of the tunnel is mostly arc-shaped.

[0004] In order to facilitate the storage or transportation of tunnel support devices, the arc-shaped top support is often connected to the side support in a detachable manner. However, during the installation of the common tunnel support devices, in order to allow the top support to strongly support the template under the tunnel arch, the connection between the top support and the template under the tunnel arch is often very tight, so it is very troublesome to remove it later, resulting in low construction efficiency. Summary of the invention

[0005] The purpose of the utility model is to provide a support device that is easy to assemble in order to solve the problems existing in the prior art, so that the disassembly and assembly efficiency of the workers can be improved.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a support device that is easy to assemble, including two relatively arranged and hollow columns, an inner column is arranged inside the column, the bottom surface of the inner column is an inclined surface, and a lifting piece is arranged between the two columns, the lifting piece includes a two-way sleeve column, studs arranged at both ends of the two-way sleeve column, and lifting blocks respectively arranged at the opposite ends of the two studs, the lifting block extends to the interior of the column and contacts with the bottom surface of the inner column, the top ends of the two columns are provided with arch beams, and straight-insertion columns are arranged at both ends of the arch beam, and the straight-insertion columns are inserted into the columns and supported on the inner columns.

[0007] Through the above technical scheme, the arch beam is inserted into the horizontal column in the tunnel in advance, and then the column and the arch beam are erected. By operating the jacking piece, an upward thrust is applied to the two inner columns at the same time, and then the arch beam inserted in the top of the column is moved upward smoothly until the arch beam is pressed against the arc-shaped template of the top wall of the subway tunnel. With this installation method, when dismantling at a later time, it is only necessary to operate the jacking piece in reverse to move the arch beam downward, so that the connection between the arch beam and the arc-shaped template under the arch frame in the subway tunnel becomes loose, and then the entire support structure can be laid down and then dismantled, which can effectively speed up work efficiency.

[0008] Optionally, on the opposite sides of the two columns, a top opening and a bottom opening are respectively provided from top to bottom. The inner bottom wall of the bottom opening is flush with the inner bottom wall of the column. On the opposite sides of the two columns, guard frames corresponding to the bottom openings are provided. The guard frames are concave plate frames.

[0009] The guard frames can make the lifting blocks move more smoothly during the movement.

[0010] Optionally, on the opposite sides of the two columns, back openings are provided. The inner bottom wall of the back openings is flush with the inner bottom wall of the bottom openings.

[0011] The provision of the back openings allows the lifting blocks to extend into the back openings when translating, so that the lifting blocks have a farther moving space, and further enables a greater lifting range of the inner columns.

[0012] Optionally, an inner support seat extending out of the top opening is fixedly installed on the side wall of the top end of the inner column. The height of the inner support seat is less than the height of the top opening.

[0013] Through the above technical solution, the inner support seat can have a certain range of up and down moving space.

[0014] Optionally, the inner support seat includes a triangular support seat arranged at the top end of the side wall of the inner column. The triangular support seat extends out of the column, and also includes side plates arranged on both sides of the top of the triangular support seat. The side plates are located outside the column.

[0015] Optionally, cross beams are provided on the two triangular support seats. A vertical beam is movably connected to the middle of the inner top wall of the arch beam at the middle of the cross beam.

[0016] A support structure for providing middle support to the middle of the arch beam is formed by using the cross beam and the vertical beam. The two ends of the cross beam are placed in the two inner support seats and rise and fall synchronously with the lifting and lowering of the inner columns. When disassembling, they are disassembled synchronously;

[0017] In addition, the support formed by the cross beam and the vertical beam can also be used as a pipeline suspension bracket during tunnel construction, achieving the purpose of dual use.

[0018] Optionally, the lifting block is a wedge block. The inclined surface of the lifting block is parallel to the bottom surface of the inner column.

[0019] Through the above design, the lateral force applied to the lifting block can be converted into a vertical thrust on the inner column. By rotating the bidirectional sleeve column, the lifting and lowering of the two inner columns can be simultaneously adjusted, and then the arch beam can be lifted and lowered stably.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. Insert the arch beam into the column in the tunnel in advance, then erect the column and the arch beam. By operating the lifting member, apply an upward thrust to the two inner columns simultaneously, thereby driving the arch beam inserted at the top of the column to move upward smoothly until the arch beam abuts against the arc-shaped template on the inner top wall of the subway tunnel. In this installation method, during later disassembly, only need to operate the lifting member in the reverse direction, so that the arch beam moves downward, loosening the connection between the arch beam and the arc-shaped template under the arch frame in the subway tunnel, and then the entire support structure can be laid down and then removed, which can effectively improve the work efficiency; 2. Use the cross beam and the vertical beam to form a support structure that provides central support for the middle part of the arch beam. Place the two ends of the cross beam in the two inner support seats and rise and fall synchronously with the lifting and lowering of the inner column, and disassemble synchronously during disassembly; 3. Through the support formed by the cross beam and the vertical beam, it can also be used as a pipeline suspension bracket during tunnel construction, achieving the purpose of dual use of one object, which can save the investment cost of the suspension bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front sectional view of a support device convenient for assembly of the present utility model;

[0022] Figure 2 For the present utility model Figure 1 is an enlarged view of part A in;

[0023] Figure 3 is a schematic diagram of a three-dimensional perspective view I of the column of the present utility model;

[0024] Figure 4 is a schematic diagram of a three-dimensional perspective view II of the column of the present utility model;

[0025] Figure 5 is a sectional view of a three-dimensional perspective view I of the column of the present utility model;

[0026] Figure 6 is a sectional view of a three-dimensional perspective view II of the column of the present utility model shown in the figure of the present utility model.

[0027] In the figure: 1. Column; 11. Top opening; 12. Bottom opening; 13. Protection frame; 14. Back opening; 2. Inner column; 3. Lifting member; 31. Bidirectional sleeve column; 32. Stud; 33. Lifting block; 4. Arch beam; 41. Straight insertion column; 5. Inner support seat; 51. Triangular support seat; 52. Side plate; 6. Cross beam; 7. Vertical beam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] As Figure 1 shown in FIG. -2, the specific solution of the embodiment is as follows: A support device convenient for assembly includes two relatively arranged and hollow columns 1. An inner column 2 is provided inside the column 1. The bottom surface of the inner column 2 is an inclined surface. A jacking member 3 is provided between the two columns 1. The jacking member 3 includes a bidirectional sleeve column 31, stud bolts 32 arranged at both ends of the bidirectional sleeve column 31, and jacking blocks 33 respectively arranged at the opposite ends of the two stud bolts 32. The jacking blocks 33 extend into the inside of the column 1 and contact the bottom surface of the inner column 2. An arch beam 4 is provided at the top ends of the two columns 1. Straight insertion columns 41 are provided at both ends of the arch beam 4. The straight insertion columns 41 are inserted into the column 1 and supported on the inner column 2.

[0031] Beforehand, insert the arch beam 4 into the horizontally placed column 1 in the tunnel. Subsequently, stand up the column 1 and the arch beam 4. By operating the jacking member 3, apply an upward thrust to the two inner columns 2 at the same time, and then drive the arch beam 4 inserted at the top end of the column 1 to move smoothly upward until the arch beam 4 abuts against the arc-shaped template on the inner top wall of the subway tunnel. In this installation method, during later disassembly, only need to operate the jacking member 3 in the reverse direction, so that the arch beam 4 moves downward, loosen the connection between the arch beam 4 and the arc-shaped template on the inner top wall of the subway tunnel, and then the entire support structure can be laid down and then removed. In this way, the work efficiency can be effectively improved, and the construction period can be shortened to a certain extent, achieving the effect of reducing costs.

[0032] As Figures 3 - 6 shown, top openings 11 and bottom openings 12 are respectively provided on the opposite sides of the two columns 1 from top to bottom. The inner bottom wall of the bottom opening 12 is flush with the inner bottom wall of the column 1. Protective frames 13 corresponding to the bottom openings 12 are provided on the opposite sides of the two columns 1. The protective frames 13 are concave plate frames. The jacking blocks 33 can move more smoothly through the protective frames 13.

[0033] As Figure 1 、 Figure 4 、Figure 6 As shown, on the opposite sides of the two columns 1, there are back openings 14. The inner bottom wall of the back opening 14 is flush with the inner bottom wall of the bottom opening 12. The provision of the back opening 14 allows the lifting block 33 to extend into the back opening 14 when translating, so that the lifting block 33 has a greater moving space, and further enables a greater lifting range of the inner column 2.

[0034] Among them, the thread grooves on the surfaces of the two stud bolts 32 are opposite. When the bidirectional sleeve column 31 is rotated, the two stud bolts 32 can be driven to move towards each other or in the opposite direction.

[0035] In this embodiment, the lifting block 33 is a wedge block. The lifting block 33 is slidably connected to the protective frame 13 and the hollow column. The inclined surface of the lifting block 33 is parallel to and in contact with the bottom surface of the inner column 2. Such a design can convert the lateral force applied to the lifting block 33 into a vertical thrust on the inner column 2. Rotating the bidirectional sleeve column 31 can simultaneously control the lifting of the two inner columns 2, and further enable the stable lifting of the arch beam 4.

[0036] It should be noted that, in order to facilitate the rotation of the bidirectional sleeve column 31 more conveniently, a plurality of jack holes are evenly provided on the outer surface of the bidirectional sleeve column 31. When rotating, a rod such as a crowbar can be inserted into the jack hole, and the bidirectional sleeve column 31 can be rotated by pulling the rod.

[0037] Furthermore, in practical applications, jacks can be respectively installed in the two protective frames 13. The telescopic ends of the jacks face downwards towards the inner column 2 and are connected to the lifting block 33. The thrust of the jacks is used to drive the lifting block 33 to move, thereby realizing the lifting function of the inner column 2.

[0038] Replacing the bidirectional sleeve column 31 and the stud bolts 32 with jacks makes it easier for workers to move the inner column 2; using the bidirectional sleeve column 31 and the stud bolts 32 is cheaper in terms of material cost compared to using jacks.

[0039] Such as Figure 1 、 Figure 5 As shown, on the side wall of the top end of the inner column 2, an inner support seat 5 extending out of the top opening 11 is fixedly installed. The height of the inner support seat 5 is less than the height of the top opening 11, allowing the inner support seat 5 to have a certain range of up and down movement space. The inner support seat 5 includes a triangular support seat 51 provided at the top end of the side wall of the inner column 2. The triangular support seat 51 extends outside the column 1, and also includes side plates 52 provided on both sides of the top of the triangular support seat 51. The side plates 52 are located outside the column 1.

[0040] Such as Figures 1 - 2 As shown, in this embodiment, a cross beam 6 is provided on the two triangular support seats 51. A vertical beam 7 whose middle part is welded and movably connected to the middle part of the inner top wall of the arch beam 4 is provided on the cross beam 6. It should be noted that a docking seat sleeved with the vertical beam 7 is installed at the central position of the inner top wall of the arch beam 4.

[0041] Use the cross beam 6 and the vertical beam 7 to form a support structure that provides middle support for the middle part of the arch beam 4. Place the two ends of the cross beam 6 in the two inner support seats 5 and lift and lower synchronously with the lifting and lowering of the inner column 2. When disassembling, disassemble synchronously. In addition, the support formed by the cross beam 6 and the vertical beam 7 can also be used as a pipeline suspension hanger during tunnel construction, achieving the purpose of dual use of one object, which can save the investment cost of the suspension hanger.

[0042] Application scenario of the above embodiment: In a tunnel where concrete needs to be poured, use this device to support the formwork under the tunnel arch. The specific operation method is as follows: Insert the straight insertion columns 41 at both ends of the arch beam 4 into the two upright columns 1 placed flat, then insert the vertical beam 7 into the docking seat inside the arch beam 4, and then insert the two ends of the cross beam 6 into the two inner support seats 5 respectively to complete the assembly of the support device. Subsequently, stand up the assembled support device, place the two lifting blocks 33 in the lifting member 3 into the two protective frames 13 respectively, and rotate the bidirectional sleeve column 31 in the lifting member 3 to make the two screw columns 32 move synchronously in the opposite direction, thereby driving the two lifting blocks 33 to extend from the two protective frames 13 into the hollow columns respectively. After the top surface of the lifting block 33 contacts the bottom wall of the inner column 2, as the lifting block 33 continues to move, the force of the lifting block 33 on the inner column 2 will be converted from a horizontal force to a vertical force, pushing the inner column 2 upward, and then driving the arch beam 4 to move upward synchronously until the arch beam 4 supports the formwork at the preset position in the tunnel. After the concrete construction is completed, rotate the bidirectional sleeve column 31 in the reverse direction to lower the arch beam 4, thereby loosening the support for the formwork, and then lay down the support device to disassemble the support device.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support device that is easy to assemble, characterized in that: It comprises two hollow columns which are arranged opposite to each other, an inner column is arranged inside the columns, the bottom surface of the inner column is an inclined surface, a lifting member is arranged between the two columns, the lifting member comprises a bidirectional sleeve column, studs arranged at both ends of the bidirectional sleeve column and lifting blocks respectively arranged at the opposite ends of the two studs, the lifting blocks extend to the interior of the columns and contact with the bottom surface of the inner column, arch beams are arranged at the top ends of the two columns, straight-insertion columns are arranged at both ends of the arch beams, the straight-insertion columns are inserted into the columns and supported on the inner columns.

2. A support device that is easy to assemble according to claim 1, characterized in that: A top opening and a bottom opening are respectively provided on opposite sides of the two columns from top to bottom, the inner bottom wall of the bottom opening is flush with the inner bottom wall of the column, and a guard frame corresponding to the bottom opening is provided on opposite sides of the two columns, and the guard frame is a concave plate frame.

3. A support device that is easy to assemble according to claim 2, characterized in that: A back opening is provided on one side of the two uprights which is opposite to each other, and the inner bottom wall of the back opening is flush with the inner bottom wall of the bottom opening.

4. A support device that is easy to assemble according to claim 2, characterized in that: An inner support seat extending out of the top opening is fixedly mounted on the side wall of the top end of the inner column, and the height of the inner support seat is smaller than the height of the top opening.

5. A support device that is easy to assemble according to claim 4, characterized in that: The inner support seat includes a triangular support seat arranged at the top end of the inner column side wall, the triangular support seat extends out of the column, and also includes side panels arranged on both sides of the top of the triangular support seat, and the side panels are located outside the column.

6. A support device that is easy to assemble according to claim 5, characterized in that: A cross beam is arranged on the two triangular support seats, and a vertical beam movably connected to the middle part of the inner top wall of the arch beam is arranged in the middle part of the cross beam.

7. The support device that is easy to assemble according to claim 1 is characterized in that: The lifting block is a wedge block, and the inclined surface of the lifting block is parallel to the bottom surface of the inner column.

Images