Expansion cylinder dismounting auxiliary device

Abstract

The utility model discloses an expansion cylinder dismounting auxiliary device, and belongs to the technical field of cold rolling recoiling machines, the technical scheme is characterized in that the device comprises a base, walking wheels are arranged at the bottom of the base, and the walking direction of the walking wheels is parallel to the axis of an expansion cylinder; the top of the base is connected with a bearing device, the bearing device comprises a first bearing assembly and a second bearing assembly, and the expansion cylinder is placed on the first bearing assembly and the second bearing assembly; the first bearing assembly comprises a first mounting seat and a first bearing, the first mounting seat is connected with the base, the first bearing is rotationally connected with the first mounting seat, the axis of the first bearing is parallel to the axis of the expansion cylinder, and the first bearing abuts against the expansion cylinder; and the second bearing assembly comprises a second mounting seat and a second bearing, the second mounting seat is connected with the base, the second bearing is rotationally connected with the second mounting seat, the axis of the second bearing is parallel to the axis of the expansion cylinder, the second bearing abuts against the expansion cylinder, and the effects of improving the disassembly efficiency of the expansion cylinder and reducing the possibility of safety accidents are achieved.

Description

Technical Field

[0001] This application relates to the technical field of cold rolling coiling machines, and in particular to an auxiliary device for disassembling an expansion cylinder. Background Art

[0002] At present, cold rolling is a key equipment in the metallurgical industry for rolling metal sheets or strips to the required thickness at room temperature. A cold rolling coiling machine usually consists of multiple precision components, including an expansion cylinder, a rotary joint, a frame, a connecting frame, etc. These components need to be regularly maintained and replaced after long-term operation to ensure the normal operation of the equipment and the high quality of products. During the cold rolling process, the expansion cylinder is one of the key components in the cold rolling mill, which is responsible for expanding and contracting the coiling mandrel to ensure the smooth progress of the rolling process and product quality.

[0003] The expansion cylinder is large in volume and heavy in weight. Traditional methods for disassembling the expansion cylinder require the use of various tools and equipment, such as a chain block, a crowbar, etc. During the disassembly process, workers need to operate at different parts of the machine, resulting in low efficiency. Especially in the narrow space of the coiling machine expansion cylinder, it is very likely to cause safety accidents. Summary of the Utility Model

[0004] In order to improve the disassembly efficiency of the expansion cylinder and reduce the possibility of safety accidents, the present utility model provides an auxiliary device for disassembling an expansion cylinder.

[0005] The auxiliary device for disassembling an expansion cylinder provided by the present utility model adopts the following technical solution:

[0006] An auxiliary device for disassembling an expansion cylinder includes a base. A plurality of traveling wheels are arranged at the bottom of the base, and the traveling wheels are evenly distributed at the bottom of the base. The traveling direction of the traveling wheels is parallel to the axis of the expansion cylinder. A bearing device is connected to the top of the base. The bearing device includes a first bearing component and a second bearing component. A spacing is left between the first bearing component and the second bearing component, and the expansion cylinder is placed on the first bearing component and the second bearing component. The first bearing component includes a first mounting seat and a first bearing. The first mounting seat is connected to the base, and the first bearing is rotatably connected to the first mounting seat. The axis of the first bearing is parallel to the axis of the expansion cylinder, and the first bearing abuts against the expansion cylinder. The second bearing component includes a second mounting seat and a second bearing. The second mounting seat is connected to the base, and the second bearing is rotatably connected to the second mounting seat. The axis of the second bearing is parallel to the axis of the expansion cylinder, and the second bearing abuts against the expansion cylinder.

[0007] By adopting the above technical solution, during use, the hoist is used to place the expansion cylinder disassembly auxiliary device on the frame of the coiler, so that the traveling wheels are in sliding contact with the frame of the coiler. The expansion cylinder disassembly auxiliary device is moved below the expansion cylinder, and the expansion cylinder is placed between the first mounting seat and the second mounting seat. Both the first bearing and the second bearing are in contact with the expansion cylinder. During the process of disassembling the bolts of the expansion cylinder and the rotary joint of the coiler, the staff only needs to be in a fixed position and rotate the expansion cylinder to sequentially disassemble multiple bolts along the circumferential wall direction of the expansion cylinder. The cooperation of the first bearing and the second bearing facilitates the rotation of the expansion cylinder, and the operation of the staff is simple, time-saving and labor-saving. After the expansion cylinder is disassembled, the first load-bearing assembly and the second load-bearing assembly cooperate to provide stable and reliable support for the expansion cylinder, thereby greatly improving the safety of the disassembly process. There is no need for the staff to move it either. Then, the hoist is used to slowly move out the expansion cylinder disassembly auxiliary device, reducing the possibility of safety accidents.

[0008] Preferably, multiple groups of the bearing devices are provided, and the multiple groups of the bearing devices are arranged along the axis.

[0009] By adopting the above technical solution, it can provide more comprehensive and stable supporting force for the expansion cylinder and can also adapt to expansion cylinders of different lengths.

[0010] Preferably, the first mounting seat is connected with a first adjusting component, the first adjusting component can adjust the position of the first mounting seat, the second mounting seat is connected with a second adjusting component, and the second adjusting component can adjust the position of the second mounting seat for realizing the distance adjustment between the first mounting seat and the second mounting seat.

[0011] By adopting the above technical solution, the first adjusting component and the second adjusting component cooperate to realize the distance adjustment between the first mounting seat and the second mounting seat, so that the distance between the first bearing and the second bearing is adjustable and more conforms to the outer wall of the expansion cylinder, increasing the stability of the expansion cylinder disassembly auxiliary device and reducing the possibility of safety accidents.

[0012] Preferably, the first adjusting component includes a first block and a first screw rod. The first block is connected with the base, the first screw rod penetrates through the first block and is in threaded connection with the first block. One end of the first screw rod is rotatably connected with the first mounting seat. The first mounting seat is slidably connected with the base, and the length direction of the first screw rod is perpendicular to the axis of the first bearing.

[0013] By adopting the above technical solution, by rotating the first screw rod, the position of the first mounting seat can be accurately adjusted.

[0014] Preferably, a first sliding hole is formed in the base, the length direction of the first sliding hole is parallel to the length direction of the first screw rod, a first bolt is arranged in the first sliding hole, the first bolt penetrates through the first mounting seat and is threadedly connected with the first mounting seat, the head of the first bolt abuts against the first mounting seat, and a first nut is threadedly connected to the tail of the first bolt, and the first nut abuts against the base.

[0015] By adopting the above technical solution, the first bolt moves in the first sliding hole, and the first bolt and the first nut cooperate to firmly fix the first mounting seat on the base after being adjusted to a proper position, providing continuous and stable support for the expansion cylinder.

[0016] Preferably, the second adjusting assembly includes a second block and a second screw rod. The second block is connected to the base. The second screw rod penetrates through the second block and is threadedly connected with the second block. One end of the second screw rod is rotatably connected to the second mounting seat. The second mounting seat is slidably connected to the base. The length direction of the second screw rod is perpendicular to the axis of the second bearing.

[0017] By adopting the above technical solution, the position of the second mounting seat can be accurately adjusted by rotating the second screw rod.

[0018] Preferably, a second sliding hole is formed in the base, the length direction of the second sliding hole is parallel to the length direction of the second screw rod, a second bolt is arranged in the second sliding hole, the second bolt penetrates through the second mounting seat and is threadedly connected with the second mounting seat, the head of the second bolt abuts against the second mounting seat, and a second nut is threadedly connected to the tail of the second bolt, and the second nut abuts against the base.

[0019] By adopting the above technical solution, the second bolt moves in the second sliding hole, and the second bolt and the second nut cooperate to firmly fix the second mounting seat on the base after being adjusted to a proper position, providing continuous and stable support for the expansion cylinder.

[0020] Preferably, the base is connected with a plurality of support plates. The support plates are arranged vertically. The plurality of support plates are arranged at intervals around the edge of the base. The bottom surface of the support plate is not higher than the bottom surface of the traveling wheels.

[0021] By adopting the above technical solution, when the expansion cylinder disassembly auxiliary device is not in use, it is placed on the ground, and the four support plates are in contact with the ground, reducing the possibility of the expansion cylinder disassembly auxiliary device slipping, and further reducing the possibility of injuring the staff due to its slipping.

[0022] Preferably, the top of the support plate is higher than the top of the base, and a through hole is formed in the top of the support plate for the hook of the overhead crane to pass through.

[0023] By adopting the above technical solution, the hook of the overhead crane passes through the through hole, thereby realizing the rapid hoisting and movement of the entire auxiliary device for disassembling the expansion cylinder.

[0024] To sum up, the utility model has the following beneficial effects:

[0025] When using the auxiliary device for disassembling the expansion cylinder, use the overhead crane to place the auxiliary device for disassembling the expansion cylinder on the frame of the coiler, so that the traveling wheels are in sliding contact with the frame of the coiler. Move the auxiliary device for disassembling the expansion cylinder under the expansion cylinder, so that the expansion cylinder is placed between the first mounting seat and the second mounting seat, and both the first bearing and the second bearing are in contact with the expansion cylinder. During the process of disassembling the bolts of the rotary joint between the expansion cylinder and the coiler, the staff only needs to be in a fixed position and rotate the expansion cylinder to sequentially disassemble the multiple bolts along the circumferential wall direction of the expansion cylinder. The cooperation of the first bearing and the second bearing facilitates the rotation of the expansion cylinder, and the operation of the staff is simple, time-saving and labor-saving. After the expansion cylinder is disassembled, the first bearing component and the second bearing component cooperate to provide stable and reliable support for the expansion cylinder, thereby greatly improving the safety of the disassembly process. It is not necessary for the staff to move it, and then use the overhead crane to slowly move out the auxiliary device for disassembling the expansion cylinder, reducing the possibility of safety accidents. Description of the Drawings

[0026] Figure 1 is an overall structural schematic diagram of an auxiliary device for disassembling an expansion cylinder.

[0027] Figure 2 is a front view of an auxiliary device for disassembling an expansion cylinder.

[0028] Figure 3 is a state diagram of the traveling wheels in contact with the coiler frame.

[0029] Figure 4 is a bottom view of an auxiliary device for disassembling an expansion cylinder.

[0030] Description of the Reference Numerals:

[0031] 1. Base; 11. First sliding hole; 12. Second sliding hole; 2. Traveling wheel; 3. Support plate; 4. Bearing device; 41. First bearing component; 411. First mounting seat; 412. First bearing; 42. Second bearing component; 421. Second mounting seat; 422. Second bearing; 5. First bolt; 51. First nut; 6. Second bolt; 61. Second nut; 7. First adjusting component; 71. First block; 72. First screw; 8. Second block; 82. Second screw; 9. Expansion cylinder. Detailed implementation mode

[0032] The following further details the present utility model in conjunction with the attached drawings.

[0033] An auxiliary device for disassembling an expansion cylinder, referring to Figure 1 、 Figure 2 and Figure 3 comprises a base 1, with a plurality of traveling wheels 2 arranged at the bottom of the base 1. The traveling wheels 2 are evenly distributed at the bottom of the base 1, and the traveling direction of the traveling wheels 2 is parallel to the axis of the expansion cylinder 9. A bearing device 4 is connected to the top of the base 1. The bearing device 4 includes a first bearing component 41 and a second bearing component 42, with a spacing left between the first bearing component 41 and the second bearing component 42. The expansion cylinder 9 is placed on the first bearing component 41 and the second bearing component 42. The first bearing component 41 includes a first mounting seat 411 and a first bearing 412. The first mounting seat 411 is connected to the base 1, and the first bearing 412 is rotatably connected to the first mounting seat 411. The axis of the first bearing 412 is parallel to the axis of the expansion cylinder 9, and the first bearing 412 abuts against the expansion cylinder 9. The second bearing component 42 includes a second mounting seat 421 and a second bearing 422. The second mounting seat 421 is connected to the base 1, and the second bearing 422 is rotatably connected to the second mounting seat 421. The axis of the second bearing 422 is parallel to the axis of the expansion cylinder 9, and the second bearing 422 abuts against the expansion cylinder 9.

[0034] During use, use a crane to place the auxiliary device for disassembling the expansion cylinder 9 on the frame of the coiler, so that the traveling wheels 2 are in sliding contact with the frame of the coiler. Move the auxiliary device for disassembling the expansion cylinder 9 below the expansion cylinder 9, so that the expansion cylinder 9 is placed between the first mounting seat 411 and the second mounting seat 421, and both the first bearing 412 and the second bearing 422 abut against the expansion cylinder 9. During the process of disassembling the bolts of the expansion cylinder 9 and the rotary joint of the coiler, the staff only needs to be in a fixed position and rotate the expansion cylinder 9 to sequentially disassemble the multiple bolts along the circumferential wall direction of the expansion cylinder 9. The cooperation of the first bearing 412 and the second bearing 422 facilitates the rotation of the expansion cylinder 9, and the operation of the staff is simple, time-saving and labor-saving. After the expansion cylinder 9 is disassembled, the first bearing component 41 and the second bearing component 42 cooperate to provide stable and reliable support for the expansion cylinder 9, thus greatly improving the safety of the disassembly process. It is also not necessary for the staff to move it, and then use a crane to slowly move out the auxiliary device for disassembling the expansion cylinder 9, reducing the possibility of safety accidents.

[0035] Referring to Figure 1 and Figure 2 the base 1 is a plate-shaped body with a rectangular cross-section. Four support plates 3 are fixedly connected to the base 1. The support plates 3 are arranged vertically, and the four support plates 3 are respectively located at the four corners of the base 1. The bottom surface of the support plate 3 is not higher than the bottom surface of the traveling wheel 2, and the top surface of the support plate 3 is higher than the top surface of the base 1.

[0036] When the disassembly auxiliary device of the expansion cylinder 9 is not in use, place it on the ground, and the four support plates 3 are in contact with the ground, reducing the possibility of the disassembly auxiliary device of the expansion cylinder 9 slipping, and further reducing the possibility of injuring the staff due to its slipping.

[0037] Refer to Figure 1 , a through hole is provided at the top of the support plate 3, and the through hole can enable the hook of the overhead crane to pass through.

[0038] Refer to Figure 3 and Figure 4 , four traveling wheels 2 are provided. The traveling wheels 2 can move on the frame of the coiler.

[0039] Refer to Figure 1 and Figure 3 , two groups of bearing devices 4 are provided, and the two groups of bearing devices 4 are arranged at intervals along the axial direction of the expansion cylinder 9. The two groups of bearing devices 4 further increase the stability when the expansion cylinder 9 is placed.

[0040] Refer to Figure 2 , the first mounting seat 411 is connected with a first adjusting assembly 7. The first adjusting assembly 7 includes a first block 71 and a first screw rod 72. The first block 71 is fixedly connected with the base 1. The first screw rod 72 is horizontally arranged, and the length direction of the first screw rod 72 is perpendicular to the axis of the first bearing 412. The first screw rod 72 penetrates through the first block 71 and is threadedly connected with the first block 71. One end of the first screw rod 72 is rotatably connected with the first mounting seat 411, and the first mounting seat 411 is slidably connected with the base 1.

[0041] By rotating the first screw rod 72, the position of the first mounting seat 411 can be accurately adjusted.

[0042] Refer to Figure 2 , the second mounting seat 421 is connected with a second adjusting assembly. The second adjusting assembly includes a second block 8 and a second screw rod 82. The second block 8 is fixedly connected with the base 1. The second screw rod 82 is horizontally arranged, and the length direction of the second screw rod 82 is perpendicular to the axis of the second bearing 422. The second screw rod 82 penetrates through the second block 8 and is threadedly connected with the second block 8. One end of the second screw rod 82 is rotatably connected with the second mounting seat 421, and the second mounting seat 421 is slidably connected with the base 1.

[0043] At the same time, by rotating the second screw rod 82, the position of the second mounting seat 421 can be accurately adjusted. Thus, the distance between the first mounting seat 411 and the second mounting seat 421 can be adjusted, so that the distance between the first bearing 412 and the second bearing 422 is adjustable, which is more fitting with the outer wall of the expansion cylinder 9, increasing the stability of the disassembly auxiliary device of the expansion cylinder 9 and reducing the possibility of safety accidents.

[0044] Refer toFigure 4 On the base 1, a first sliding hole 11 and a second sliding hole 12 are provided. There are four first sliding holes 11, and the length direction of the first sliding hole 11 is parallel to the length direction of the first screw rod 72. There are four second sliding holes 12, and the length direction of the second sliding hole 12 is parallel to the length direction of the second screw rod 82. Two first sliding holes 11 and two second sliding holes 12 form a sliding hole group. The two sliding hole groups correspond to the two groups of bearing devices 4 one by one.

[0045] Referring to Figure 2 and Figure 4 As shown in, the two first sliding holes 11 within the same sliding hole group correspond to the two ends of the first mounting seat 411 one by one. A first bolt 5 is arranged in the first sliding hole 11, and the two first bolts 5 within the same group correspond to the two ends of the first mounting seat 411 one by one. The first bolt 5 passes through the first mounting seat 411 and the first sliding hole 11, and the first bolt 5 is threadedly connected to the first mounting seat 411. The head of the first bolt 5 abuts against the first mounting seat 411, and a first nut 51 is threadedly connected to the tail of the first bolt 5. When the first nut 51 abuts against the bottom of the base 1, the fixing of the first mounting seat 411 is realized.

[0046] The cooperation of the first bolt 5 and the first nut 51 enables the first mounting seat 411 to be firmly fixed on the base 1 after being adjusted to a proper position, providing continuous and stable support for the expansion cylinder 9.

[0047] Referring to Figure 2 and Figure 4 As shown in, the two second sliding holes 12 within the same sliding hole group correspond to the two ends of the second mounting seat 421 one by one. A second bolt 6 is arranged in the second sliding hole 12, and the two second bolts 6 within the same group correspond to the two ends of the second mounting seat 421 one by one. The second bolt 6 passes through the second mounting seat 421 and the second sliding hole 12, and the second bolt 6 is threadedly connected to the second mounting seat 421. The head of the second bolt 6 abuts against the second mounting seat 421, and a second nut 61 is threadedly connected to the tail of the second bolt 6. When the second nut 61 abuts against the bottom of the base 1, the fixing of the second mounting seat 421 is realized.

[0048] The cooperation of the second bolt 6 and the second nut 61 enables the second mounting seat 421 to be firmly fixed on the base 1 after being adjusted to a proper position, providing continuous and stable support for the expansion cylinder 9.

[0049] The usage principle of this application is as follows: When using the expansion cylinder 9 disassembly auxiliary device, pass the hook of the overhead crane through the through hole, and then use the overhead crane to place the expansion cylinder 9 disassembly auxiliary device on the frame of the coiler. Through the traveling wheels 2, move the expansion cylinder 9 disassembly auxiliary device until the first bearing 412 and the second bearing 422 of the first set of bearing devices 4 just enter below the expansion cylinder 9. First, rotate the first nut 51 and the second nut 61 away from the base 1, and then adjust the first screw rod 72 and the second screw rod 82 according to the outer wall of the expansion cylinder 9 so that both the first bearing 412 and the second bearing 422 can be in contact with the surface of the expansion cylinder 9. Rotate the first nut 51 and the second nut 61 in the reverse direction to fix the positions of the first mounting seat 411 and the second mounting seat 421 of the first set of bearing devices 4.

[0050] Then move the expansion cylinder 9 disassembly auxiliary device until the first bearing 412 and the second bearing 422 of the second set of bearing devices 4 just enter below the expansion cylinder 9. First, rotate the first nut 51 and the second nut 61 away from the base 1, and then adjust the first screw rod 72 and the second screw rod 82 according to the outer wall of the expansion cylinder 9 so that both the first bearing 412 and the second bearing 422 can be in contact with the surface of the expansion cylinder 9. Rotate the first nut 51 and the second nut 61 in the reverse direction to fix the positions of the first mounting seat 411 and the second mounting seat 421 of the second set of bearing devices 4.

[0051] Continue to move the expansion cylinder 9 disassembly auxiliary device below the center of gravity of the expansion cylinder 9, and then start to disassemble the bolts of the expansion cylinder 9 and the rotary joint. Continuously rotate the expansion cylinder 9 until all the bolts are disassembled, and the disassembly of the expansion cylinder 9 is completed. Move the expansion cylinder 9 disassembly auxiliary device out of the coiler, and use the overhead crane to lift the expansion cylinder 9 disassembly auxiliary device to a suitable position.

[0052] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An expansion cylinder disassembly auxiliary device, characterized in that: It comprises a base (1), a plurality of running wheels (2) are arranged at the bottom of the base (1), the running wheels (2) are evenly distributed at the bottom of the base (1), and the running direction of the running wheels (2) is parallel to the axis of the expansion cylinder (9); The top of the base (1) is connected to a bearing device (4), the bearing device (4) comprises a first bearing component (41) and a second bearing component (42), a distance is left between the first bearing component (41) and the second bearing component (42), and the expansion cylinder (9) is placed on the first bearing component (41) and the second bearing component (42); The first bearing assembly (41) comprises a first mounting seat (411) and a first bearing (412); the first mounting seat (411) is connected to the base (1); the first bearing (412) is rotatably connected to the first mounting seat (411); the axis of the first bearing (412) is parallel to the axis of the expansion cylinder (9); and the first bearing (412) abuts against the expansion cylinder (9); The second bearing assembly (42) comprises a second mounting seat (421) and a second bearing (422); the second mounting seat (421) is connected to the base (1); the second bearing (422) is rotatably connected to the second mounting seat (421); the axis of the second bearing (422) is parallel to the axis of the expansion cylinder (9); and the second bearing (422) is in contact with the expansion cylinder (9).

2. The expansion cylinder disassembly auxiliary device according to claim 1, characterized in that: The carrying devices (4) are provided in multiple groups, and the multiple groups of the carrying devices (4) are arranged along an axis.

3. An expansion cylinder disassembly auxiliary device according to claim 1 or 2, characterized in that: The first mounting seat (411) is connected to a first adjustment component (7), and the first adjustment component (7) is capable of adjusting the position of the first mounting seat (411); the second mounting seat (421) is connected to a second adjustment component, and the second adjustment component is capable of adjusting the position of the second mounting seat (421), so as to achieve distance adjustment between the first mounting seat (411) and the second mounting seat (421).

4. The expansion cylinder disassembly auxiliary device according to claim 3, characterized in that: The first adjustment assembly (7) comprises a first block (71) and a first screw rod (72); the first block (71) is connected to the base (1); the first screw rod (72) passes through the first block (71) and is threadedly connected to the first block (71); one end of the first screw rod (72) is rotatably connected to the first mounting seat (411); the first mounting seat (411) is slidably connected to the base (1); and the length direction of the first screw rod (72) is perpendicular to the axis of the first bearing (412).

5. The expansion cylinder disassembly auxiliary device according to claim 4, characterized in that: The base (1) is provided with a first sliding hole (11), the length direction of the first sliding hole (11) is parallel to the length direction of the first screw rod (72), a first bolt (5) is arranged in the first sliding hole (11), the first bolt (5) passes through the first mounting seat (411) and is threadedly connected to the first mounting seat (411), the head of the first bolt (5) abuts against the first mounting seat (411), the tail of the first bolt (5) is threadedly connected with a first nut (51), and the first nut (51) abuts against the base (1).

6. The expansion cylinder disassembly auxiliary device according to claim 3, characterized in that: The second adjustment assembly comprises a second block (8) and a second screw rod (82); the second block (8) is connected to the base (1); the second screw rod (82) passes through the second block (8) and is threadedly connected to the second block (8); one end of the second screw rod (82) is rotatably connected to the second mounting seat (421); the second mounting seat (421) is slidably connected to the base (1); and the length direction of the second screw rod (82) is perpendicular to the axis of the second bearing (422).

7. The expansion cylinder disassembly auxiliary device according to claim 6, characterized in that: The base (1) is provided with a second sliding hole (12), the length direction of the second sliding hole (12) is parallel to the length direction of the second screw rod (82), a second bolt (6) is arranged in the second sliding hole (12), the second bolt (6) passes through the second mounting seat (421) and is threadedly connected to the second mounting seat (421), the head of the second bolt (6) abuts against the second mounting seat (421), the tail of the second bolt (6) is threadedly connected with a second nut (61), and the second nut (61) abuts against the base (1).

8. The expansion cylinder disassembly auxiliary device according to claim 1, characterized in that: The base (1) is connected to a plurality of support plates (3), the support plates (3) are arranged vertically, the plurality of support plates (3) are arranged at intervals around the edge of the base (1), and the bottom surface of the support plate (3) is not higher than the bottom surface of the traveling wheel (2).

9. The expansion cylinder disassembly auxiliary device according to claim 8, characterized in that: The top of the support plate (3) is higher than the top of the base (1), and a through hole is provided on the top of the support plate (3), and the through hole is used for a hook of a ceiling crane to pass through.

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