Special lifting appliance for subway construction rubber spring prefabricated slab

Abstract

The utility model discloses a special lifting appliance for a rubber spring prefabricated slab in subway construction. The special lifting appliance comprises a connecting bolt, a stress bottom plate, a limiting disc, a positioning pin, a connecting piece and a lifting ring, the limiting disc is arranged above the stress bottom plate, the connecting piece is arranged above the limiting disc, and the hanging ring is arranged above the connecting piece; the threaded end of the connecting bolt sequentially penetrates through the stress bottom plate and the middle of the limiting disc and then is in threaded connection with one end of the connecting piece, and the other end of the connecting piece is connected with the hanging ring. The lifting appliance further comprises a positioning bolt, the positioning bolt is in threaded connection with the connecting piece and used for limiting connection between the connecting bolt and the connecting piece and limiting connection between the connecting piece and the lifting ring, and one end of the positioning pin penetrates through the limiting disc to be connected with the stress bottom plate and used for limiting rotation of the stress bottom plate relative to the limiting disc. The lifting appliance disclosed by the utility model is reasonable in structure, tight in connection, convenient to operate, high in stability and capable of effectively improving the efficiency and the safety of the lifting operation of the rubber spring prefabricated slab.

Description

Technical Field

[0001] The utility model relates to the field of hoisting during subway track construction, and particularly to a special lifting tool for rubber spring precast slabs in subway construction. Background Art

[0002] During the subway track laying construction process, rubber spring precast slabs must be used in some sections. The weight of a single rubber spring precast slab used for subway track laying is close to 10 tons, which poses relatively high requirements for the lifting tool.

[0003] Currently, the lifting method for rubber spring precast slabs is to use a lifting hook to hook the four corners of the rubber spring precast slab to complete the lifting operation. Using a lifting hook not only has a high risk factor, but also is prone to wear and tear, is troublesome to use, requires frequent verification of construction safety specifications, and has low efficiency. Therefore, there is currently no special lifting tool for rubber precast slabs with high efficiency and high safety factor. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art, and provide a special lifting tool for rubber spring precast slabs in subway construction, which can effectively improve the efficiency and safety of the precast slab lifting operation.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a special lifting tool for rubber spring precast slabs in subway construction, characterized in that the lifting tool includes connecting bolts, a stress bottom plate, a limiting plate, positioning pins, connecting pieces and a lifting ring. The limiting plate is arranged above the stress bottom plate, the connecting piece is arranged above the limiting plate, the lifting ring is arranged above the connecting piece. The threaded end of the connecting bolt sequentially passes through the middle parts of the stress bottom plate and the limiting plate and is threadedly connected with one end of the connecting piece, and the other end of the connecting piece is connected with the lifting ring;

[0006] The lifting tool further includes positioning bolts, which are threadedly connected with the connecting pieces and are used to limit the connection between the connecting bolts and the connecting pieces, and to limit the connection between the connecting pieces and the lifting rings. One end of the positioning pin passes through the limiting plate and is connected with the stress bottom plate and is used to prevent the stress bottom plate from rotating relative to the limiting plate.

[0007] The above-mentioned special lifting tool for rubber spring precast slabs in subway construction is characterized in that the stress bottom plate is a flat plate structure with three-side extensions at the edge, the three-side extension parts are located at the three vertices of an equilateral triangle, a bottom plate connection hole is arranged at the center of the stress bottom plate, and a plurality of bottom plate positioning holes are evenly arranged around the bottom plate connection hole.

[0008] The above-mentioned special lifting device for rubber spring precast slabs in subway construction is characterized in that the contour of the limit disk is consistent with the contour of the stress bottom plate, a limit connection hole is arranged at the center of the limit disk, and a plurality of limit positioning holes are evenly arranged around the limit connection hole; the limit positioning holes correspond to the bottom plate positioning holes in hole positions, and the limit connection hole corresponds to the bottom plate connection hole in hole positions.

[0009] The above-mentioned special lifting device for rubber spring precast slabs in subway construction is characterized in that the boosting rod is arranged on the upper surface of the limit disk and is used to push the limit disk.

[0010] The above-mentioned special lifting device for rubber spring precast slabs in subway construction is characterized in that the number of the bottom plate positioning holes is three, and the number of the limit positioning holes is three.

[0011] The above-mentioned special lifting device for rubber spring precast slabs in subway construction is characterized in that a connection hole channel is arranged at the center of the connecting piece, one end of the connection hole channel is in threaded connection with the lifting ring, and the other end of the connection hole channel is in threaded connection with the connection bolt.

[0012] The above-mentioned special lifting device for rubber spring precast slabs in subway construction is characterized in that a horizontal positioning hole channel is arranged in the height direction of the connecting piece, and the horizontal positioning hole channel is communicated with the connection hole channel; the horizontal positioning hole channel includes a first horizontal positioning hole channel and a second horizontal positioning hole channel, and the first horizontal positioning hole channel is arranged above the second horizontal positioning hole channel;

[0013] The positioning bolt includes a first positioning bolt and a second positioning bolt; a bolt hole for inserting the second positioning bolt is arranged on the connection bolt, and the bolt hole corresponds to the second horizontal positioning hole channel. The lifting ring further includes a lifting ring bolt, and a lifting ring hole for inserting the first positioning bolt is arranged on the lifting ring bolt, and the lifting ring hole corresponds to the first horizontal positioning hole channel;

[0014] The first positioning bolt passes through the first horizontal positioning hole channel and the bolt hole; the second positioning bolt passes through the second horizontal positioning hole channel and the lifting ring hole.

[0015] The utility model has the following advantages compared with the prior art:

[0016] 1. The structure of the utility model is simple to operate, and the structure of the lifting device is simple; only simple assembly between parts is required to realize the rapid assembly and disassembly of the precast slab and the lifting device.

[0017] 2. The utility model achieves an effect greater than the sum of its parts through the combination of simple parts, especially under the action of the positioning pin and the positioning bolt. The positioning function of the positioning pin can effectively avoid the risk that the stressed bottom plate rotates and disengages from the sleeve hole during hoisting; the positioning function of the positioning bolt can effectively avoid the risk that the connecting bolt in the connecting piece rotates and disengages from the connecting piece, further ensuring the safety performance during hoisting operations.

[0018] 3. Each sling designed by the utility model can be engaged with the hole and bear a tensile force of more than 5T without deformation or fracture, which can greatly improve the hoisting efficiency of on-site precast slabs.

[0019] The following provides a further detailed description of the utility model through the accompanying drawings and embodiments. Description of the Drawings

[0020] Figure 1 is the exploded view of the utility model;

[0021] Figure 2 is the assembly process diagram of the utility model;

[0022] Figure 3 is the fully assembled diagram of the utility model;

[0023] Figure 4 is the cross-sectional schematic diagram of the connecting piece of the utility model;

[0024] Figure 5 is the front view schematic diagram of the working state of the utility model;

[0025] Figure 6 is the top view schematic diagram of the working state of the utility model.

[0026] Description of the Reference Numerals in the Drawings:

[0027] 1 - Connecting Bolt; 2 - Stressed Bottom Plate; 3 - Limiting Disk;

[0028] 4 - Boosting Rod; 5 - Positioning Pin; 6 - Positioning Bolt;

[0029] 7 - Connecting Piece; 21 - Bottom Plate Connection Hole; 22 - Bottom Plate Positioning Hole;

[0030] 31 - Limiting Connection Hole; 32 - Limiting Positioning Hole; 73 - Connection Channel;

[0031] 61 - First Positioning Bolt; 62 - Second Positioning Bolt; 8 - Hoisting Ring;

[0032] 71 - First Horizontal Positioning Channel; 72 - Second Horizontal Positioning Channel; 81 - Hoisting Ring Bolt. Detailed Embodiment

[0033] Embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present utility model. It should be understood that the drawings and embodiments of the present utility model are only for exemplary purposes and are not used to limit the protection scope of the present utility model.

[0034] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0035] As Figure 1 shown, a special lifting tool for a rubber spring precast slab in subway construction in this embodiment includes a connecting bolt 1, a stress-bearing bottom plate 2, a limiting disc 3, a positioning pin 5, a positioning bolt 6, a connecting member 7, and a lifting ring 8; the limiting disc 3 is arranged above the stress-bearing bottom plate 2, the connecting member 7 is arranged above the limiting disc 3, and the lifting ring 8 is arranged above the connecting member 7; the threaded end of the connecting bolt 1 sequentially passes through the middle parts of the stress-bearing bottom plate 2 and the limiting disc 3 and is threadedly connected to one end of the connecting member 7, and the other end of the connecting member 7 is connected to the lifting ring 8.

[0036] The positioning bolt 6 is threadedly connected to the connecting member 7 and is used to limit the connection between the connecting bolt 1 and the connecting member 7 and the connection between the connecting member 7 and the lifting ring 8. One end of the positioning pin 5 passes through the limiting disc 3 and is connected to the stress-bearing bottom plate 2 and is used to prevent the stress-bearing bottom plate 2 from rotating relative to the limiting disc 3; that is, the connecting bolt 1 connects the main components and transmits the tensile force; the stress-bearing bottom plate 2 bears the gravity of the precast slab and evenly transmits it; the limiting disc 3 restricts the position of the stress-bearing bottom plate to ensure the structural stability; the positioning pin 5 prevents the stress-bearing bottom plate from rotating relative to the limiting disc; the positioning bolt 6 limits the connection between the connecting bolt and the connecting member and the connection between the connecting member and the lifting ring; the connecting member 7 transmits the force; the lifting ring 8 connects the lifting equipment and transmits the tensile force.

[0037] Combining Figures 1 to 3 with Figure 6 it can be seen that in this embodiment, the stress-bearing bottom plate 2 is a flat plate structure with three-sided extensions at the edges, and the three-sided extension parts are located at the three vertices of an equilateral triangle, and its shape profile fits the sleeve holes of the rubber spring precast slab to be lifted; a bottom plate connection hole 21 is provided at the center of the stress-bearing bottom plate 2 for connection with the connecting bolt 1; a plurality of bottom plate positioning holes 22 are evenly arranged around the bottom plate connection hole 21 for the positioning pin 5 to be inserted.

[0038] Combining Figures 1 to 3 with Figure 5As can be seen from the combination, in this embodiment, the shape of the limit disk 3 is consistent with the contour of the force-bearing bottom plate 2, and the limit disk 3 also fits well with the sleeve hole of the spring precast slab to be lifted. When assembling the lifting tool in this embodiment on the spring precast slab to be lifted, the parts extending on three sides of the force-bearing bottom plate 2 are stuck into the grooves in the sleeve hole, and the parts extending on three sides of the limit disk 3 are stuck into the protruding parts in the sleeve hole, so that the limit disk 3 cannot rotate in the sleeve hole; a limit connection hole 31 is provided at the center of the limit disk 3, and a plurality of limit positioning holes 32 are evenly arranged around the limit connection hole 31; the limit positioning holes 32 correspond to the hole positions of the bottom plate positioning holes 22, and the limit connection hole 31 corresponds to the straight hole position of the bottom plate connection hole 21. Furthermore, after the positioning pins 5 are sequentially inserted into the limit positioning holes 32 and the bottom plate positioning holes 22, the force-bearing bottom plate 2 cannot rotate while being stressed in the sleeve hole, thus preventing the force-bearing bottom plate 2 from rotating out of the sleeve hole.

[0039] As Figures 1 to 3 shown, in this embodiment, the boost rod 4 is arranged on the upper surface of the limit disk 3 and is used to push the limit disk 3 to facilitate adjusting the position of the limit disk 3 in the sleeve hole.

[0040] As Figures 1 to 3 shown, in this embodiment, the number of the bottom plate positioning holes 22 is three, and the number of the limit positioning holes 32 is three, which can better play the positioning role of the positioning pins 5.

[0041] In this embodiment, as Figure 1 and Figure 4 shown, a connection hole channel 73 is provided at the center of the connecting piece 7. One end of the connection hole channel 73 is threadedly connected to the lifting ring 8, and the other end of the connection hole channel 73 is threadedly connected to the connecting bolt 1; the connecting piece 7 can be tightly combined with the connecting bolt 1, thereby connecting the force-bearing bottom plate 2, the limit disk 3 and the lifting ring 8 into a whole, effectively transmitting the pulling force and gravity in the lifting process, and ensuring the overall stability and reliability in the lifting operation of the lifting tool.

[0042] In this embodiment, as Figure 1 and Figure 4 shown, a horizontal positioning hole channel is provided in the height direction of the connecting piece 7, and the horizontal positioning hole channel is communicated with the connection hole channel 73; the horizontal positioning hole channel includes a first horizontal positioning hole channel 71 and a second horizontal positioning hole channel 72, and the first horizontal positioning hole channel 71 is arranged above the second horizontal positioning hole channel 72;

[0043] The positioning bolt 6 includes a first positioning bolt 61 and a second positioning bolt 62; a bolt hole for the insertion of the second positioning bolt 62 is provided on the connecting bolt 1, and the bolt hole corresponds to the second horizontal positioning channel 72. The sling 8 further includes a sling bolt 81, and a sling hole for the insertion of the first positioning bolt 61 is provided on the sling bolt 81, and the sling hole corresponds to the first horizontal positioning channel 71;

[0044] The first positioning bolt 61 passes through the first horizontal positioning channel 71 and the bolt hole; the second positioning bolt 62 passes through the second horizontal positioning channel 72 and the sling hole.

[0045] In this embodiment, the hoisting tool has a reasonable structure. Under the action of the connecting member 7, each component is tightly connected. Moreover, the force-bearing bottom plate 2 and the limiting disc 3 both fit into the sleeve hole of the precast slab. The two cooperate with each other, and under the action of the positioning pin 5, the risk of the hoisting tool rotating and disengaging from the sleeve hole is avoided, ensuring the safety of the hoisting construction operation.

[0046] This embodiment is easy to operate. When using a special hoisting tool for rubber spring precast slabs in subway construction in this embodiment, first, the force-bearing bottom plate 2 is clamped into the groove in the sleeve hole, and then the position of the limiting disc 3 is adjusted with the booster rod 4 so that the limiting disc 3 is clamped into the protruding part of the sleeve hole. The positioning pin 5 is inserted into the limit positioning hole 32 and the bottom plate positioning hole 22, so that the force-bearing bottom plate 2 and the limiting disc 3 are locked in the sleeve hole. Then, the position of the connecting channel 73 is corresponded to the position of the limit connecting hole 31, and the connecting bolt 1 is inserted from the bottom of the sleeve hole, passing through the bottom plate connecting hole 21 and the limit connecting hole 31 in sequence, and finally threadedly connected to the lower end of the connecting channel 73. Then, the second positioning bolt 62 is threadedly connected to both the second horizontal positioning channel 72 and the bolt hole on the connecting bolt 1, so that the force-bearing bottom plate 2, the limiting disc 3 and the connecting member 7 become a tight structure. The sling bolt 81 is threadedly connected to the upper end of the connecting channel 73, and then the first positioning bolt 61 is threadedly connected to both the first horizontal positioning channel 71 and the sling hole on the sling bolt 81, so that the sling 8 and the connecting member 7 become a tight structure. Furthermore, the force-bearing bottom plate 2, the limiting disc 3, the connecting member 7 and the sling 8 are made into a tight structure. Since the force-bearing bottom plate 2 and the limiting disc 3 are clamped in the sleeve hole of the spring precast slab to be lifted, the spring precast slab to be lifted can be stably and safely lifted.

[0047] The above are only the preferred embodiments of the present invention, and do not impose any limitations on the present invention. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A special lifting tool for rubber spring precast slabs in subway construction, characterized in that, The sling includes a connecting bolt (1), a stress-bearing bottom plate (2), a limit disc (3), a positioning pin (5), a connecting member (7) and a lifting ring (8). The limit disc (3) is arranged above the stress-bearing bottom plate (2), the connecting member (7) is arranged above the limit disc (3), the lifting ring (8) is arranged above the connecting member (7). The threaded end of the connecting bolt (1) sequentially passes through the middle parts of the stress-bearing bottom plate (2) and the limit disc (3) and is threadedly connected to one end of the connecting member (7), and the other end of the connecting member (7) is connected to the lifting ring (8). The sling further includes a positioning bolt (6). The positioning bolt (6) is threadedly connected to the connecting member (7) and is used to limit the connection between the connecting bolt (1) and the connecting member (7), and is used to limit the connection between the connecting member (7) and the lifting ring (8). One end of the positioning pin (5) passes through the limit disc (3) and is connected to the stress-bearing bottom plate (2) and is used to prevent the stress-bearing bottom plate (2) from rotating relative to the limit disc (3).

2. The special lifting device for rubber spring precast slabs in subway construction according to claim 1, wherein, The stress-bearing bottom plate (2) is a flat plate structure with three-sided extensions at the edge. The three-sided extended parts are located at the three vertices of an equilateral triangle. A bottom plate connection hole (21) is arranged at the center of the stress-bearing bottom plate (2), and a plurality of bottom plate positioning holes (22) are evenly arranged around the bottom plate connection hole (21).

3. The special lifting tool for the rubber spring precast slab in subway construction according to claim 1 or 2, characterized in that, The contour of the limit disc (3) is consistent with that of the stress-bearing bottom plate (2). A limit connection hole (31) is arranged at the center of the limit disc (3), and a plurality of limit positioning holes (32) are evenly arranged around the limit connection hole (31); the limit positioning holes (32) correspond to the bottom plate positioning holes (22) in terms of hole positions, and the limit connection hole (31) corresponds to the bottom plate connection hole (21) in terms of hole positions.

4. A special lifting tool for rubber spring precast slabs in subway construction according to claim 1 or 2, characterized in that, A boosting rod (4) for pushing the limit disc (3) is arranged on the upper surface of the limit disc (3).

5. The special lifting tool for rubber spring precast slabs in subway construction according to claim 3, characterized in that, The number of the bottom plate positioning holes (22) is three, and the number of the limit positioning holes (32) is three.

6. The special lifting device for rubber spring precast slabs in subway construction according to claim 1, characterized in that, A connection hole passage (73) is arranged at the center of the connecting member (7). One end of the connection hole passage (73) is threadedly connected to the lifting ring (8), and the other end of the connection hole passage (73) is threadedly connected to the connecting bolt (1).

7. The special lifting device for rubber spring precast slabs in subway construction according to claim 6, characterized in that, A horizontal positioning hole passage is arranged in the height direction of the connecting member (7), and the horizontal positioning hole passage communicates with the connection hole passage (73); the horizontal positioning hole passage includes a first horizontal positioning hole passage (71) and a second horizontal positioning hole passage (72), and the first horizontal positioning hole passage (71) is arranged above the second horizontal positioning hole passage (72). The positioning bolt (6) includes a first positioning bolt (61) and a second positioning bolt (62); a bolt hole for inserting the second positioning bolt (62) is arranged on the connecting bolt (1), and the bolt hole corresponds to the second horizontal positioning hole passage (72). The lifting ring (8) further includes a lifting ring bolt (81), and a lifting ring hole for inserting the first positioning bolt (61) is arranged on the lifting ring bolt (81), and the lifting ring hole corresponds to the first horizontal positioning hole passage (71). The first positioning bolt (61) is inserted through the first horizontal positioning hole channel (71) and the bolt hole; the second positioning bolt (62) is inserted through the second horizontal positioning hole channel (72) and the lifting ring hole.

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