Adjustable cushion pier for jacking SMPT trolley assembly

Abstract

The invention relates to the technical field of adjustable cushion piers, in particular to an adjustable cushion pier for jacking an SMPT trolley assembly, when a second power source drives a rotating part to rotate and a supporting rod rotates to a low-position clamping groove, a first power source drives a jacking part to rise, and the supporting rod pushes the low-position clamping groove to enable a bearing part to rise to a first height; when the second power source drives the rotating part to rotate and rotates the supporting rod to the high-position clamping groove, the first power source drives the jacking part to rise, the supporting rod pushes the high-position clamping groove to enable the bearing part to rise to a second height, and the second height is larger than the first height; the transverse rod ties the annular rod in two directions to increase the stability of the annular rod, the tying part supports the annular rod part from the front direction and the rear direction to enhance the overall stability and the bearing capacity of the supporting part, the strength of the supporting rod is improved under the condition that the diameter of the supporting rod is not increased, the weight of the adjustable pad pier is reduced, and operation is convenient. And meanwhile, the situation that the supporting rod is pressed to be broken in the jacking process can be prevented.

Description

Technical Field

[0001] The invention relates to the technical field of adjustable cushions, in particular to an adjustable cushion used for jacking up of an SMPT trolley for final assembly. Background Art

[0002] As the main structures for oil and gas resource exploitation, offshore platforms and LNG modules have been built in increasing numbers in recent years, and the demand for site resources has been increasing. For land construction, conventionally, slideway resources are used for construction, and after completion, they are loaded onto ships by dragging. With the increase in land construction projects, this slideway construction method has gradually failed to meet project needs, mainly reflected in the limited slideway resources at the construction site. For projects that exceed the construction capacity of slideway resources, a new construction and loading mode is urgently needed.

[0003] The SPMT trolley shipbuilding construction model solves this problem very well. For LNG modules, this method is more efficient and convenient, especially the assembly and closing of a deck piece, which can also be completed by the SPMT trolley, thus saving the investment and waiting time of large crawler crane resources, and is not affected by the lifting conditions. The deck piece can be made larger and more perfect. In the past, during the assembly and placement of the SPMT trolley, it was necessary to replace the pads or piers of different heights 3-4 times to complete the jacking and placement of the deck piece, which consumed a lot of man-hours and forklift shifts, was inefficient, and was not conducive to the control of project progress and costs. Later, the adjustable piers replaced the pads to complete the jacking and placement of the deck piece.

[0004] However, the support rods of conventional adjustable piers are mostly cylindrical, and the contact area between the cylindrical support rod and the slot is small, so the cylindrical support rod is easily broken by the slot. In order to increase the bearing capacity, it is often necessary to increase its diameter, making the adjustable pier bulky and inconvenient to operate. Summary of the invention

[0005] The main purpose of the present invention is to provide an adjustable cushion for jacking up the SMPT trolley assembly, so as to solve the problem in the related art that the diameter of the support rod needs to be increased to avoid it being broken by the clamping groove.

[0006] In order to achieve the above object, according to one aspect of the present invention, there is provided an adjustable pier for jacking up the assembly of a SMPT trolley, comprising: a supporting portion, the supporting portion comprising a plurality of low-position slots, a plurality of high-position slots and a plurality of bolts, two opposite low-position slots being located on the same straight line, and two opposite high-position slots being located on the same straight line, and the supporting portion being arranged on the lower flange of the beam of the deck plate by bolts;

[0007] A lifting part, the lifting part is located below the supporting part, the lifting part includes two supporting rods and a plurality of supporting parts, the two supporting rods are located on both sides of the lifting part and are in the same straight line, the supporting parts are all concentrically fixed inside the supporting rods, and the supporting parts are used to strengthen the bearing capacity of the supporting rods;

[0008] A rotating part, the rotating part is fixedly arranged below the lifting part, and the rotating part includes a first power source for changing the height of the lifting part;

[0009] A base part, wherein the base part is rotatably arranged below the rotating part, and the base part includes a second power source for driving the rotating part to rotate. When the second power source drives the rotating part to rotate and rotates the supporting rod to the low-position slot, the first power source drives the lifting part to rise, and the supporting rod pushes the low-position slot to make the supporting part rise to a first height. When the second power source drives the rotating part to rotate and rotates the supporting rod to the high-position slot, the first power source drives the lifting part to rise, and the supporting rod pushes the high-position slot to make the supporting part rise to a second height, and the second height is greater than the first height.

[0010] Furthermore, the supporting part also includes a supporting plate and a supporting ring, the supporting ring is fixedly arranged on the lower surface of the supporting plate, the low-position slot and the high-position slot are both vertically arranged on the supporting ring, and the bolts are all threadedly connected to the supporting plate.

[0011] Furthermore, the lifting part includes a lifting ring, a reinforcement column and a reinforcement rod, the reinforcement rod is fixed inside the lifting ring, the reinforcement column is fixed on the top of the reinforcement rod, and the support rods are fixed on the outer side of the lifting ring.

[0012] Furthermore, the rotating part also includes a rotating ring, the bottom end of the first power source is fixedly arranged on the inner upper surface of the rotating ring, and the top end is fixedly connected to the bottom surface of the lifting ring.

[0013] Furthermore, the base portion also includes a base box, the bottom end of the second power source is fixedly arranged on the inner upper surface of the base box, and the top end is fixedly connected to the bottom surface of the rotating ring.

[0014] Furthermore, the support portion includes a ring rod portion and a tie portion, and the ring rod portion is fixedly arranged in the middle of the tie portion to enhance the overall stability of the support portion.

[0015] Furthermore, the annular rod portion includes an annular rod, a cross rod, a web rod group and a vertical rod group. Both ends of the cross rod are fixedly connected to the inner surface of the annular rod. The web rod group is fixedly connected at the head and tail, located on the outer circle of the cross rod and the inner circle of the annular rod, and are fixedly connected to the annular rod. The vertical rod group connects the web rod group with the cross rod.

[0016] Further, the web member group includes an upper web member group and a lower web member group. The upper web member group is located above the cross bar, and the lower web member group is located below the cross bar. The upper web member group includes a first web member, a second web member, and a third web member. The lower web member group includes a fourth web member and a fifth web member. The top of the first web member is fixedly connected to the top of the cross bar, and the bottom is fixedly connected to the top of the second web member. The bottom of the second web member is fixedly connected to the top of the third web member. The bottom of the third web member is fixedly connected to the bottom of the cross bar. The bottom of the fourth web member is fixedly connected to the bottom of the cross bar, and the top is fixedly connected to the bottom of the fifth web member. The top of the fifth web member is fixedly connected to the top of the cross bar.

[0017] Further, the vertical member group includes a first vertical member, a second vertical member, and a third vertical member. The top of the third vertical member is fixedly connected to the top of the cross bar, and the bottom is fixedly connected to the bottom of the second web member. The top of the first vertical member is fixedly connected to the bottom of the first web member, and the bottom is fixedly connected to the middle of the third vertical member. The top of the second vertical member is fixedly connected to the tail of the second web member, and the bottom is fixedly connected to the upper surface of the cross bar.

[0018] Further, the tying part includes a tying ring group, a plurality of tying plates, and a plurality of tying frames. The tying ring group includes a first tying ring and a second tying ring. One end of each tying plate is fixedly connected to the outer ring of the first tying ring, the other end is fixedly connected to the outer ring of the second tying ring, and the middle is fixedly connected to the outer ring of the annular rod. The tying frames are all fixedly arranged between the first tying ring and the second tying ring. The tying frame includes a first tying rod, a second tying rod, and a third tying rod. The first tying rod, the second tying rod, and the third tying rod are in a "one" shape. The ends of the first tying rod, the second tying rod, and the third tying rod are all fixedly connected and are fixedly connected to the second tying ring, and the tails are all fixedly connected to the first tying rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects: When the motor drives the rotating part to rotate and turns the support rod to the low-position card slot, the telescopic cylinder drives the jacking part to rise. The support rod pushes the low-position card slot to make the supporting part rise to the first height. When the motor drives the rotating part to rotate and turns the support rod to the high-position card slot, the telescopic cylinder drives the jacking part to rise. The support rod pushes the high-position card slot to make the supporting part rise to the second height, and the second height is greater than the first height; The cross bar ties the annular rod in two directions to increase its stability. The first web member, the second web member, the third web member, the fourth web member, and the fifth web member are connected end to end to tie the annular rod from different directions to further increase its stability; The first vertical member, the second vertical member, and the third vertical member connect the web member group to the cross bar to enhance the integrity of the ring rod part; The tying part supports the ring rod part from the front and back directions to strengthen the overall stability and bearing capacity of the supporting part. A plurality of supporting parts simultaneously support the support rod inside. Without increasing the diameter of the support rod, its strength is improved, the weight of the adjustable cushion pier is reduced, which is convenient for operation, and at the same time, the situation that the support rod is crushed during the jacking process can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the supporting part structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the lifting part of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the rotating part of the present invention;

[0024] Figure 5 It is a schematic diagram of the base structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the support structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the ring rod portion of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the tie-in portion of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the tie frame of the present invention.

[0029] Illustration Description:

[0030] 1. Supporting part; 11. Supporting tray; 12. Supporting ring; 13. Low position slot; 14. High position slot; 15. Bolt;

[0031] 2. Lifting part; 21. Lifting ring; 22. Support rod; 23. Support part; 24. Reinforcement column; 25. Reinforcement rod; 231. Ring rod part; 232. Tie part; 2311. Ring rod; 2312. Cross rod; 2313. First web rod; 2314. Second web rod; 2315. Third web rod; 2316. Fourth web rod; 2317. Fifth web rod; 2318. First vertical rod; 2319. Second vertical rod; 2310. Third vertical rod; 2321. First tie ring; 2322. Second tie ring; 2323. Tie plate; 2324. Tie frame; 23241. First tie rod; 23242. Second tie rod; 23243. Third tie rod;

[0032] 3. Rotating part; 31. Rotating ring; 32. Telescopic cylinder;

[0033] 4. base portion; 41. base box; 42. motor. DETAILED DESCRIPTION

[0034] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0035] See also Figures 1 to 9 The present embodiment provides an adjustable cushion for jacking up the SMPT trolley assembly, comprising: a supporting portion 1, the supporting portion 1 comprising a plurality of low-position slots 13, a plurality of high-position slots 14 and a plurality of bolts 15, two opposite low-position slots 13 are located on the same straight line, two opposite high-position slots 14 are located on the same straight line, and the supporting portion 1 is arranged on the lower flange of the beam of the deck plate through the bolts 15;

[0036] The lifting part 2 is located below the supporting part 1. The lifting part 2 includes two supporting rods 22 and a plurality of supporting parts 23. The two supporting rods 22 are located on both sides of the lifting part 2 and are in the same straight line. The supporting parts 23 are all concentrically fixed inside the supporting rods 22. The supporting parts 23 are used to strengthen the bearing capacity of the supporting rods 22.

[0037] The rotating part 3 is fixedly arranged below the lifting part 2. The rotating part 3 includes a first power source. In this embodiment, a telescopic cylinder 32 is preferably used as the first power source to change the height of the lifting part 2.

[0038] The base part 4 is rotatably arranged below the rotating part 3. The base part 4 includes a second power source. In this embodiment, the motor 42 is preferably used as the second power source to drive the rotating part 3 to rotate. When the motor 42 drives the rotating part 3 to rotate and turns the supporting rod 22 to the low-position slot 13, the telescopic cylinder 32 drives the lifting part 2 to rise, and the supporting rod 22 pushes the low-position slot 13 to make the supporting part 1 rise to the first height. When the motor 42 drives the rotating part 3 to rotate and turns the supporting rod 22 to the high-position slot 14, the telescopic cylinder 32 drives the lifting part 2 to rise, and the supporting rod 22 pushes the high-position slot 14 to make the supporting part 1 rise to the second height, and the second height is greater than the first height.

[0039] The supporting part 1 also includes a supporting plate 11 and a supporting ring 12 . The supporting ring 12 is fixedly arranged on the lower surface of the supporting plate 11 . The low-position slot 13 and the high-position slot 14 are both vertically arranged on the supporting ring 12 . The bolts 15 are all threadedly connected to the supporting plate 11 .

[0040] The lifting part 2 includes a lifting ring 21, a reinforcing column 24 and a reinforcing rod 25. The reinforcing rod 25 is fixed inside the lifting ring 21, and the reinforcing column 24 is fixed on the top of the reinforcing rod 25. The reinforcing column 24 and the supporting rod 22 work together to lift the supporting part 1 and reduce the risk of the supporting rod 22 being crushed. The supporting rods 22 are all fixed on the outer side of the lifting ring 21.

[0041] The rotating part 3 further includes a rotating ring 31 . The bottom end of the telescopic cylinder 32 is fixedly arranged on the inner upper surface of the rotating ring 31 , and the top end is fixedly connected to the bottom surface of the lifting ring 21 .

[0042] The base portion 4 further includes a base box 41 . The bottom end of the motor 42 is fixedly disposed on the inner upper surface of the base box 41 , and the top end is fixedly connected to the bottom surface of the rotating ring 31 .

[0043] The support portion 23 includes a ring rod portion 231 and a tie portion 232 . The ring rod portion 231 is fixedly disposed in the middle of the tie portion 232 to enhance the overall stability of the support portion 23 .

[0044] The ring rod portion 231 includes a ring rod 2311, a cross rod 2312, a web member group and a vertical rod group. Both ends of the cross rod 2312 are fixedly connected to the inner surface of the ring rod 2311. The web member group is fixedly connected at the head and tail, located at the outer circle of the cross rod 2312 and the inner circle of the ring rod 2311, and are fixedly connected to the ring rod 2311. The vertical rod group connects the web member group with the cross rod 2312.

[0045] The abdominal rod group includes an upper abdominal rod group and a lower abdominal rod group. The upper abdominal rod group is located above the cross bar 2312, and the lower abdominal rod group is located below the cross bar 2312. The upper abdominal rod group includes a first abdominal rod 2313, a second abdominal rod 2314 and a third abdominal rod 2315, and the lower abdominal rod group includes a fourth abdominal rod 2316 and a fifth abdominal rod 2317. The top of the first abdominal rod 2313 is fixedly connected to the top of the cross bar 2312, and the bottom is fixedly connected to the top of the second abdominal rod 2314. The bottom of the second abdominal rod 2314 is fixedly connected to the top of the third abdominal rod 2315. The bottom of the third abdominal rod 2315 is fixedly connected to the bottom of the cross bar 2312. The bottom of the fourth abdominal rod 2316 is fixedly connected to the bottom of the cross bar 2312, and the top is fixedly connected to the bottom of the fifth abdominal rod 2317. The top of the fifth abdominal rod 2317 is fixedly connected to the top of the cross bar 2312.

[0046] The vertical pole group includes a first vertical pole 2318, a second vertical pole 2319 and a third vertical pole 2310. The top of the third vertical pole 2310 is fixedly connected to the top of the cross bar 2312, and the bottom is fixedly connected to the bottom of the second web bar 2314. The top of the first vertical pole 2318 is fixedly connected to the bottom of the first web bar 2313, and the bottom is fixedly connected to the middle of the third vertical pole 2310. The top of the second vertical pole 2319 is fixedly connected to the tail of the second web bar 2314, and the bottom is fixedly connected to the upper surface of the cross bar 2312.

[0047] The tying part 232 includes a tying ring group, a number of tying plates 2323 and a number of tying frames 2324. The tying ring group includes a first tying ring 2321 and a second tying ring 2322. One ends of the tying plates 2323 are fixedly connected to the outer ring of the first tying ring 2321, the other ends are fixedly connected to the outer ring of the second tying ring 2322, and the middle parts are fixedly connected to the outer ring of the annular rod 2311. The tying frames 2324 are fixedly arranged between the first tying ring 2321 and the second tying ring 2322. The tying frame 2324 includes a first tying rod 23241, a second tying rod 23242 and a third tying rod 23243. The first tying rod 23241, the second tying rod 23242 and the third tying rod 23243 are in a "one" shape. The ends of the first tying rod 23241, the second tying rod 23242 and the third tying rod 23243 are fixedly connected and fixedly connected to the second tying ring 2322, and the tails are fixedly connected to the first tying rod 23241.

[0048] After the deck sheet is transported and assembled in place in the general assembly area, start the jacking and lifting according to the plan. Place the supporting part 1 under the deck sheet, and fix the supporting tray 11 to the lower flange of the beam of the deck sheet with bolts 15. Place the jacking part 2, the rotating part 3 and the base part 4 on the SPMT trolley. After the SPMT trolley travels to the designated position, align the jacking part 2 with the supporting part 1, start the motor 42, the motor 42 drives the rotating ring 31 to rotate, and the rotating ring 31 drives the supporting rod 22 to rotate to the low-position card slot 13. Turn off the motor 42, start the telescopic cylinder 32, the piston rod of the telescopic cylinder 32 extends, pushing the jacking part 2 to move upward, and the supporting rod 22 pushes the supporting part 1 to move upward through the low-position card slot 13. When the supporting part 1 is jacked up to the maximum height, place the corresponding supporting structure under the deck sheet column to support the deck sheet. Operate the telescopic cylinder 32 to retract its piston rod, and the jacking part 2 falls back, so that the supporting rod 22 disengages from the low-position card slot 13. Start the motor 42 again, the motor 42 drives the rotating part 3 to rotate to drive the supporting rod 22 to rotate to the high-position card slot 14. Turn off the motor 42, operate the telescopic cylinder 32 to extend its piston rod, the jacking part 2 rises, and the supporting rod 22 is pushed into the high-position card slot 14, jacking the supporting part 1 to a higher height. When the deck sheet rises to the designed height, turn off the telescopic cylinder 32 to complete the general assembly and positioning work of the deck sheet. Unscrew the bolts on the lower flange of the deck sheet beam, remove the supporting part 1 from the deck sheet, and wait for the next use.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An adjustable cushion for jacking up the SMPT trolley assembly, characterized in that: include: A supporting part (1), the supporting part (1) comprising a plurality of low-position slots (13), a plurality of high-position slots (14) and a plurality of bolts (15), two opposite low-position slots (13) being located on the same straight line, two opposite high-position slots (14) being located on the same straight line, and the supporting part (1) being arranged on the lower flange of the beam of the deck plate through the bolts (15); A lifting part (2), the lifting part (2) is located below the supporting part (1), the lifting part (2) comprises two support rods (22) and a plurality of support parts (23), the two support rods (22) are located on both sides of the lifting part (2) and are on the same straight line, the support parts (23) are all concentrically fixed inside the support rods (22), and the support parts (23) are used to strengthen the bearing capacity of the support rods (22); A rotating part (3), the rotating part (3) being fixedly arranged below the lifting part (2), the rotating part (3) comprising a first power source for changing the height of the lifting part (2); The base portion (4) is rotatably arranged below the rotating portion (3), and the base portion (4) includes a second power source for driving the rotating portion (3) to rotate. When the second power source drives the rotating portion (3) to rotate and rotates the support rod (22) to the low-position slot (13), the first power source drives the lifting portion (2) to rise, and the support rod (22) pushes the low-position slot (13) to raise the supporting portion (1) to a first height. When the second power source drives the rotating portion (3) to rotate and rotates the support rod (22) to the high-position slot (14), the first power source drives the lifting portion (2) to rise, and the support rod (22) pushes the high-position slot (14) to raise the supporting portion (1) to a second height, and the second height is greater than the first height.

2. The adjustable cushion for jacking up the SMPT trolley assembly according to claim 1 is characterized in that: The supporting portion (1) further comprises a supporting plate (11) and a supporting ring (12); the supporting ring (12) is fixedly arranged on the lower surface of the supporting plate (11); the low-position slot (13) and the high-position slot (14) are both vertically arranged on the supporting ring (12); and the bolts (15) are both threadedly connected to the supporting plate (11).

3. The adjustable cushion for SMPT trolley assembly jacking according to claim 1 is characterized in that: The lifting part (2) comprises a lifting ring (21), a reinforcing column (24) and a reinforcing rod (25); the reinforcing rod (25) is fixedly arranged inside the lifting ring (21); the reinforcing column (24) is fixedly arranged on the top of the reinforcing rod (25); and the supporting rods (22) are fixedly arranged on the outer side of the lifting ring (21).

4. The adjustable cushion for jacking up the SMPT trolley assembly according to claim 3 is characterized in that: The rotating part (3) also includes a rotating ring (31), the bottom end of the first power source is fixedly arranged on the inner upper surface of the rotating ring (31), and the top end is fixedly connected to the bottom surface of the lifting ring (21).

5. The adjustable cushion for jacking up the SMPT trolley assembly according to claim 4 is characterized in that: The base portion (4) also includes a base box (41), the bottom end of the second power source is fixedly arranged on the inner upper surface of the base box (41), and the top end is fixedly connected to the bottom surface of the rotating ring (31).

6. The adjustable cushion for jacking up the SMPT trolley assembly according to claim 1 is characterized in that: The support portion (23) comprises a ring rod portion (231) and a tie portion (232); the ring rod portion (231) is fixedly arranged in the middle of the tie portion (232) to enhance the overall stability of the support portion (23).

7. The adjustable cushion for jacking up the SMPT trolley assembly according to claim 6 is characterized in that: The ring rod portion (231) comprises a ring rod (2311), a cross rod (2312), a web rod group and a vertical rod group. Both ends of the cross rod (2312) are fixedly connected to the inner surface of the ring rod (2311). The web rod group is fixedly connected at the head and tail, located at the outer circle of the cross rod (2312) and the inner circle of the ring rod (2311), and is fixedly connected to the ring rod (2311). The vertical rod group connects the web rod group and the cross rod (2312).

8. The adjustable cushion for jacking up the SMPT trolley assembly according to claim 7 is characterized in that: The abdominal rod group includes an upper abdominal rod group and a lower abdominal rod group, the upper abdominal rod group is located above the cross bar (2312), and the lower abdominal rod group is located below the cross bar (2312), the upper abdominal rod group includes a first abdominal rod (2313), a second abdominal rod (2314) and a third abdominal rod (2315), and the lower abdominal rod group includes a fourth abdominal rod (2316) and a fifth abdominal rod (2317), the top of the first abdominal rod (2313) is fixedly connected to the top of the cross bar (2312), and the bottom is fixedly connected to the second abdominal rod (2317). The bottom of the second web member (2314) is fixedly connected to the top of the third web member (2315), the bottom of the third web member (2315) is fixedly connected to the bottom of the cross bar (2312), the bottom of the fourth web member (2316) is fixedly connected to the bottom of the cross bar (2312), and the top is fixedly connected to the bottom of the fifth web member (2317), and the top of the fifth web member (2317) is fixedly connected to the top of the cross bar (2312).

9. The adjustable cushion for jacking up the SMPT trolley assembly according to claim 8 is characterized in that: The vertical pole group comprises a first vertical pole (2318), a second vertical pole (2319) and a third vertical pole (2310); the top of the third vertical pole (2310) is fixedly connected to the top of the cross bar (2312), and the bottom is fixedly connected to the bottom of the second web bar (2314); the top of the first vertical pole (2318) is fixedly connected to the bottom of the first web bar (2313), and the bottom is fixedly connected to the middle of the third vertical pole (2310); the top of the second vertical pole (2319) is fixedly connected to the tail of the second web bar (2314), and the bottom is fixedly connected to the upper surface of the cross bar (2312).

10. The adjustable cushion for jacking up the SMPT trolley assembly according to claim 7, characterized in that: The tying part (232) includes a tying ring group, a plurality of tying plates (2323) and a plurality of tying frames (2324). The tying ring group includes a first tying ring (2321) and a second tying ring (2322). One ends of the tying plates (2323) are fixedly connected to the outer ring of the first tying ring (2321), the other ends are fixedly connected to the outer ring of the second tying ring (2322), and the middle parts are fixedly connected to the outer ring of the annular rod (2311). The tying frames (2324) are fixedly arranged between the first tying ring (2321) and the second tying ring (2322). The tying frame (2324) includes a first tying rod (23241), a second tying rod (23242) and a third tying rod (23243). The first tying rod (23241), the second tying rod (23242) and the third tying rod (23243) are in a "one" shape. The ends of the first tying rod (23241), the second tying rod (23242) and the third tying rod (23243) are fixedly connected and are fixedly connected to the second tying ring (2322), and the tails are fixedly connected to the first tying rod (23241).

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