A hoisting device for pipe jacking construction

Abstract

The utility model belongs to pipe hoisting technical field, specifically provide a hoisting device for pipe sinking construction, including stand, sliding unit, connecting rod unit and clamping unit, sliding unit can slide up and down along stand, the top of stand has the lifting ring, sliding unit has first lifting lug, the lifting ring and first lifting lug are connected respectively different lifting hooks, sliding unit moves up and down can drive connecting rod unit to gather or open, further drive multiple clamping units to expand outward or contract inward simultaneously, realize the action of clamping or disengaging pipe. The utility model provides a hoisting device for pipe sinking construction can hoist and transport vertical pipe and realize automatic unhooking, satisfy the construction demand of deep well engineering. Compared with manual unhooking mode, adopt the lifting hook and the lifting rope control sliding unit along the stand and slide to realize automatic unhooking, more safe, construction efficiency is high. Compared with the mode that other power equipment drives the clamp unhooking, the structure is simpler, and the manufacturing cost is low.

Description

Technical Field

[0001] This application belongs to the field of pipe hoisting technology, and more specifically, relates to a hoisting device for pipe submerged construction. Background Technology

[0002] Cement pipes or reinforced concrete pipes are widely used in highway and building construction. When constructing horizontal pipelines, the pipes are laid horizontally, which is convenient for hoisting. However, when constructing deep wells through vertical connections, the pipes need to be lowered vertically into the borehole.

[0003] Due to the large diameter and heavy weight of the pipes, special clamps are needed to hold them during hoisting. After hoisting to the correct position, the clamps and pipes are separated, a process known as "unhooking." Previously, pipe hoisting relied on manual unhooking, which posed significant safety risks. To improve construction safety, existing technologies include mechanical hoisting clamps capable of automatic unhooking. However, these mechanical clamps use motors or other drive devices to control their movement. For example, Chinese Patent Publication No. CN119660547A, entitled "A Pipe Lifting Device," discloses a stepper motor-driven clamping mechanism that holds the inner wall of the pipe. While such devices can achieve automatic clamping and unhooking, they require external power equipment, resulting in complex structures and high manufacturing costs. Utility Model Content

[0004] Based on the above-mentioned technical problems, this application provides a hoisting device for pipe submerged construction, which solves the technical problems of existing hoisting devices that, although capable of automatic clamping and unhooking, require external power equipment, have complex structures, and high manufacturing costs.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a hoisting device for pipe submersion construction, comprising:

[0006] The column is set vertically, with a lifting ring at the top and a limiting ring protruding from its outer wall at the middle.

[0007] A sliding unit is coaxially sleeved on the outer periphery of the column and located above the limiting ring. The sliding unit is slidably engaged with the column, and the sliding unit is provided with a first lifting lug.

[0008] Multiple linkage units are spaced apart along the circumference of the column. Each linkage unit includes a first rod, a second rod, a third rod, and a fourth rod. One end of the first rod is hinged to the lower part of the column, and the other end extends away from the column. One end of the second rod is hinged to either the column or the sliding unit, and the other end extends away from the column. The third rod is arranged vertically, with its lower end hinged to the end of the first rod away from the column, and its upper end hinged to the end of the second rod away from the column. The fourth rod is inclined vertically, with its upper end hinged to the sliding unit, and its lower end hinged to the middle of the second rod.

[0009] Multiple clamping units are disposed on the third rod in a corresponding manner. The clamping units are used to form a clamping surface that is adapted to the inner wall of the pipe on the side facing the inner wall of the pipe.

[0010] In one possible implementation, the bottom of the column is provided with a support plate, and a plurality of first hinge seats are provided around the column on the support plate, and one end of the first rod adjacent to the column is hinged to the corresponding first hinge seat.

[0011] In one possible implementation, the sliding unit includes:

[0012] A sliding sleeve, coaxially sleeved on the outer periphery of the column and located above the limiting ring, the upper end of the fourth rod is hinged to the sliding sleeve, and the sliding sleeve is provided with the first lifting lug; and

[0013] An elastic element is disposed between the sliding sleeve and the limiting ring.

[0014] In one possible implementation, the lower part of the sliding sleeve has an annular receiving groove, and the upper part of the elastic element is received in the receiving groove.

[0015] In one possible implementation, the sliding unit further includes a support sleeve, which is coaxially sleeved on the outer periphery of the column. The support sleeve is located between the limiting ring and the sliding sleeve. The lower end of the elastic element abuts against the top of the support sleeve. The support sleeve is slidably engaged or fixedly connected to the column. One end of the second rod adjacent to the column is hinged to the support sleeve.

[0016] In one possible implementation, the outer wall of the sliding sleeve is provided with a plurality of second hinge seats at intervals along its circumference, and the upper end of the fourth rod is hinged to the second hinge seats; the support sleeve is provided with a plurality of third hinge seats at intervals around its circumference, and the end of the second rod adjacent to the column is hinged to the third hinge seat.

[0017] In one possible implementation, the hinge positions of the first rod, the second rod, the third rod, and the fourth rod are detachably set by pluggable pins.

[0018] In one possible implementation, the clamping surface of the clamping unit is provided with an anti-slip pad, and the anti-slip pad has an anti-slip texture.

[0019] In one possible implementation, the number of the link unit and the clamping unit are three.

[0020] In one possible implementation, the hoisting device for pipe submersion construction further includes connecting rods, the number of which corresponds to the number of connecting rod units. One end of each connecting rod is hinged to the end of the second rod away from the column, and the other end has a positioning groove for accommodating the upper edge of the pipe.

[0021] Compared with the prior art, the advantages of the hoisting device for pipe submerged construction provided in this application are:

[0022] The present application provides a hoisting device for pipe submerged construction, comprising a column, a sliding unit, a connecting rod unit, and a clamping unit. The sliding unit can slide up and down along the column. The top of the column has a lifting ring, and the sliding unit has a first lifting lug. The lifting ring and the first lifting lug are respectively connected to two independent hooks on the crane. The up and down movement of the sliding unit can drive the connecting rod unit to retract or expand, thereby driving multiple clamping units to expand outward or contract inward simultaneously, realizing the action of clamping or detaching the pipe.

[0023] When lifting pipes, both hooks are first lifted simultaneously. The hooks, via the first lifting lug, drive the sliding unit upwards, which in turn drives the connecting rod unit to retract inwards. Then, the lifting device of this application is placed inside the pipe from top to bottom. After the lifting device is inside the pipe, the hook connected to the first lifting lug is released. Under the action of gravity, the sliding unit moves downwards and drives the connecting rod unit to open outwards, causing multiple clamping units to abut against the inner wall of the pipe. Then, the hook connected to the lifting ring is lifted. Under the action of gravity, the clamping units can fit tightly against the inner wall of the pipe. The heavier the pipe, the tighter the clamping units fit against the inner wall, thus stably clamping the pipe and allowing it to move together with the column. After the crane moves the lifting device and pipe above the borehole, the hook connected to the column is slowly lowered so that the pipe enters the borehole vertically. After the pipe is in place, the hook connected to the first lifting lug is lifted, and the sliding unit drives the connecting rod unit to retract, so that the clamping unit and the inner wall of the pipe are separated from each other, and the lifting device can be taken out of the borehole.

[0024] This application provides a hoisting device for pipe submerged construction, capable of hoisting vertical pipes and automatically detaching them, meeting the construction needs of deep well projects. Compared to manual detachment, the automatic detachment achieved by controlling the sliding unit along the column using a hook and rope is safer and more efficient. Compared to methods using other power equipment to drive the clamps for detachment, the structure is simpler, requiring no motor or other drive equipment, resulting in lower manufacturing costs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A perspective view of a hoisting device for pipe submerged construction provided in an embodiment of this application;

[0027] Figure 2 A front view of a hoisting device for pipe submersion construction provided in an embodiment of this application;

[0028] Figure 3 A schematic diagram of a hoisting device for pipe submersion construction and a pipe in a detached state, provided as an embodiment of this application;

[0029] Figure 4 A schematic diagram of a hoisting device for pipe submerged construction and a pipe in a clamping state is provided for an embodiment of this application;

[0030] Figure 5 for Figure 4 Enlarged view of part A in the middle;

[0031] Explanation of reference numerals in the attached figures:

[0032] 10. Column; 11. Lifting ring; 12. Limiting ring; 13. Support plate; 131. First hinge seat; 20. Sliding unit; 21. Sliding sleeve; 211. First lifting lug; 212. Receiving groove; 213. Second hinge seat; 22. Elastic element; 23. Support sleeve; 231. Third hinge seat; 232. Second lifting lug; 30. Linkage unit; 31. First rod; 32. Second rod; 33. Third rod; 34. Fourth rod; 40. Clamping unit; 41. Anti-slip pad; 50. Connecting rod; 60. Pipe. Detailed Implementation

[0033] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0038] Please refer to the following: Figures 1 to 5 The following describes a hoisting device for pipe submerged construction provided in an embodiment of this application.

[0039] Please see Figure 1 and Figure 2This application provides a hoisting device for pipe submerged construction, including a column 10, a sliding unit 20, multiple connecting rod units 30, and multiple clamping units 40. The column 10 is vertically arranged, with a lifting ring 11 at the top and a limiting ring 12 protruding from its outer wall at the middle. The sliding unit 20 is coaxially sleeved on the outer periphery of the column 10 and located above the limiting ring 12. The sliding unit 20 slides with the column 10 and has a first lifting lug 211. Multiple connecting rod units 30 are spaced apart along the circumference of the column 10. Each connecting rod unit 30 includes a first rod 31, a second rod 32, a third rod 33, and a fourth rod 34. One end of the first rod 31 is hinged to the lower part of the column 10, and the other end extends away from the column 10. One end of the second rod 32... One end is hinged to either the column 10 or the sliding unit 20, and the other end extends away from the column 10. The third rod 33 is arranged in the vertical direction. The lower end of the third rod 33 is hinged to the end of the first rod 31 away from the column 10, and the upper end of the third rod 33 is hinged to the end of the second rod 32 away from the column 10. The fourth rod 34 is arranged inclined in the vertical direction. The upper end of the fourth rod 34 is hinged to the sliding unit 20, and the lower end of the fourth rod 34 is hinged to the middle of the second rod 32. Multiple clamping units 40 are correspondingly arranged on the third rod 33. The clamping unit 40 is used to form a clamping surface that is adapted to the inner wall of the pipe 60 on the side facing the inner wall of the pipe 60.

[0040] Compared with the prior art, the advantages of the hoisting device for pipe submerged construction provided in this application are:

[0041] The lifting device for pipe submerged construction provided in this application includes a column 10, a sliding unit 20, a connecting rod unit 30, and a clamping unit 40. The sliding unit 20 can slide up and down along the column 10. The top of the column 10 has a lifting ring 11. The sliding unit 20 has a first lifting lug 211. The lifting ring 11 and the first lifting lug 211 are respectively connected to different hooks. The up and down movement of the sliding unit 20 can drive the connecting rod unit 30 to retract or expand, thereby driving multiple clamping units 40 to expand outward or contract inward at the same time, realizing the action of clamping or detaching the pipe 60.

[0042] The lifting device for pipe submerged construction provided in this application embodiment can lift vertical pipes 60 and achieve automatic unhooking, meeting the construction needs of deep well projects. Compared with manual unhooking, the automatic unhooking achieved by controlling the sliding unit 20 along the column 10 using a hook and rope is safer and has higher construction efficiency. Compared with using other power equipment to drive the clamps for unhooking, the structure is simpler, requiring no motor or other drive equipment, resulting in lower manufacturing costs.

[0043] like Figure 3 and Figure 4 The figures shown are schematic diagrams illustrating the use of a lifting device for pipe submersion construction according to an embodiment of this application, and the pipe 60 in a detached state and a clamped state, respectively. The lifting ring 11 and the first lifting lug 211 are respectively connected to the corresponding hooks via steel wire ropes. The two hooks can be independently controlled for lifting and lowering without affecting each other.

[0044] When it is necessary to lift the pipe 60, firstly, both hooks are lifted simultaneously. The hooks drive the sliding unit 20 upward through the first lifting lug 211, which in turn drives the connecting rod unit 30 to retract inward. Then, the lifting device of this application is placed into the pipe 60 from top to bottom. After the lifting device is placed inside the pipe 60, the hook connected to the first lifting lug 211 is released. Under the action of gravity, the sliding unit 20 moves downward and drives the connecting rod unit 30 to open outward, so that multiple clamping units 40 respectively abut against the inner wall of the pipe 60. Then, the hook connected to the lifting ring 11 is lifted. Under the action of gravity, the clamping units 40 can fit tightly against the inner wall of the pipe 60. The heavier the pipe 60, the tighter the clamping units 40 fit against the inner wall of the pipe 60. In this way, the pipe 60 can be stably clamped, so that the pipe 60 moves together with the column 10. After the crane moves the lifting device and pipe 60 above the borehole, the hook connected to the column 10 is slowly lowered so that the pipe 60 enters the borehole in a vertical position. After the pipe 60 is in place, the hook connected to the first lifting lug 211 is lifted up, and the sliding unit 20 drives the connecting rod unit 30 to retract, so that the clamping unit 40 and the inner wall of the pipe 60 are separated from each other, and the lifting device can be taken out of the borehole.

[0045] The column 10 is a cylindrical, square, or other shaped column structure. A lifting ring 11 is welded and fixed to the top of the column 10, and the lifting ring 11 is used to connect with one of the hooks. The sliding unit 20 can slide up and down along the column 10. The limiting ring 12 is used to limit the lowest position of the sliding unit 20. The function of the sliding unit 20 is to drive the connecting rod unit 30 to open or retract. The sliding unit 20 is fixedly connected to a first lifting lug 211, which is connected to another hook through a wire rope. Both hooks are independently raised and lowered by the crane control.

[0046] The linkage unit 30 is formed by combining a first link 31, a second link 32, a third link 33, and a fourth link 34. Each linkage unit 30 is provided with a clamping unit 40, and the number of linkage units 30 and clamping units 40 can be two, three, or more. Figure 2As shown, the first rod 31, the second rod 32, the third rod 33, and the column 10 form a parallelogram-like structure. The sliding unit 20 moves upward, causing the first rod 31 and the second rod 32 to rotate upward via the fourth rod 34. The third rod 33 and the clamping unit 40 move away from the inner wall of the pipe 60. Under the influence of gravity, the sliding unit 20 moves downward, causing the first rod 31 and the second rod 32 to rotate downward via the third rod 33. The third rod 33 and the clamping unit 40 can then adhere tightly to the inner wall of the pipe 60.

[0047] Please see Figure 1 and Figure 2 In some possible embodiments, the bottom of the column 10 is provided with a support plate 13, and a plurality of first hinge seats 131 are provided around the column 10 on the support plate 13. One end of the column 10 adjacent to the first rod 31 is hinged to the corresponding first hinge seat 131. The first hinge seat 131 can be set on the support plate 13 by welding or bolt fixing.

[0048] Please see Figure 1 , Figure 2 and Figure 5 In some possible embodiments, the sliding unit 20 includes a sliding sleeve 21 and an elastic element 22. The sliding sleeve 21 is coaxially sleeved on the outer periphery of the column 10 and located above the limiting ring 12. The upper end of the fourth rod 34 is hinged to the sliding sleeve 21, and the sliding sleeve 21 is provided with a first lifting lug 211. The elastic element 22 is disposed between the sliding sleeve 21 and the limiting ring 12, and plays a buffering role, so that the sliding sleeve 21 can fall slowly under the action of gravity to prevent collisions. It should be noted that the stiffness of the elastic element 22 should not be too large, and it should be ensured that the sliding sleeve 21 can overcome the elastic force of the elastic element 22 and press the elastic element 22 down a certain distance under the action of gravity.

[0049] The elastic element 22 can specifically be a helical spring, which is sleeved on the outer periphery of the column 10, with its upper end abutting against the sliding sleeve 21. Please refer to [link / reference]. Figure 5 In some possible embodiments, the lower part of the sliding sleeve 21 is provided with an annular receiving groove 212, and the upper part of the elastic member 22 is received in the receiving groove 212.

[0050] Please see Figure 1 , Figure 2 and Figure 5 In some possible embodiments, the sliding unit 20 further includes a support sleeve 23, which is coaxially sleeved on the outer periphery of the column 10. The support sleeve 23 is located between the limiting ring 12 and the sliding sleeve 21. The lower end of the elastic element 22 abuts against the top of the support sleeve 23. The support sleeve 23 can be slidably engaged or fixedly connected with the column 10. The end of the second rod 32 adjacent to the column 10 is hinged to the support sleeve 23.

[0051] In this embodiment, the support sleeve 23 can be slidably fitted with the column 10 or fixedly connected, both of which can ensure the normal operation of the lifting device. The specific setting method can be selected according to the needs. When the support sleeve 23 is slidably set, a second lifting lug 232 can be set on the support sleeve 23 and connected to the hook by a wire rope. The second lifting lug 232 and the first lifting lug 211 can be connected to the same hook by a wire rope, or the second lifting lug 232 can be connected to a separate hook.

[0052] Please see Figure 1 , Figure 2 and Figure 5 In some possible embodiments, the outer wall of the sliding sleeve 21 is provided with a plurality of second hinge seats 213 at intervals along its circumference, and the upper end of the fourth rod 34 is hinged to the second hinge seats 213; the support sleeve 23 is provided with a plurality of third hinge seats 231 at intervals around its circumference, and the end of the second rod 32 adjacent to the column 10 is hinged to the third hinge seat 231. The structures of the second hinge seats 213 and the third hinge seats 231 can be the same or different, and they can be fixed by welding or by bolts.

[0053] Please see Figure 1 and Figure 2 The hinge positions of the first rod 31, the second rod 32, the third rod 33 and the fourth rod 34 are detachably set by pluggable pins, and the first rod 31, the second rod 32, the third rod 33 and the fourth rod 34 of different lengths can be replaced as needed to adapt to pipes 60 of different diameters.

[0054] To improve the clamping stability of the clamping unit 40, the clamping surface of the clamping unit 40 is provided with an anti-slip pad 41. The anti-slip pad 41 has anti-slip texture, which can increase the friction between the clamping unit 40 and the inner wall of the tube 60, improve the clamping stability, and reduce the risk of falling.

[0055] Please see Figure 3 and Figure 4 A hoisting device for pipe submersion construction also includes connecting rods 50. The number of connecting rods 50 corresponds to the number of connecting rod units 30. One end of the connecting rod 50 is hinged to the end of the second rod body 32 away from the column 10, and the other end is used to overlap the top of the pipe 60, forming a positioning groove for accommodating the upper edge of the pipe 60. The overlapping rod plays a positioning role when the hoisting device is lowered into the pipe 60, and after the pipe 60 is hoisted, the positioning groove of the overlapping rod can hook the upper edge of the pipe 60, providing a certain degree of anti-detachment and anti-falling effect.

[0056] The hoisting device for pipe submerged construction provided in this application embodiment is applicable to the construction of pipes 60 such as cement pipes and reinforced concrete pipes. Different specifications of products can be manufactured as needed to adapt to pipes 60 with different diameters.

[0057] It is understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be repeated here. After this description, it can be considered that the present utility model specification has recorded each combined embodiment and can support different combined embodiments.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipe hoisting device for pipe jacking, characterized by comprising: include: The column (10) is vertically set, and the top of the column (10) is provided with a lifting ring (11), and the middle part of the column (10) is provided with a limiting ring (12) protruding from its own outer wall. The sliding unit (20) is coaxially sleeved on the outer periphery of the column (10) and located above the limiting ring (12). The sliding unit (20) is slidably engaged with the column (10). The sliding unit (20) is provided with a first lifting lug (211). Multiple linkage units (30) are spaced apart along the circumference of the column (10). Each linkage unit (30) includes a first rod (31), a second rod (32), a third rod (33), and a fourth rod (34). One end of the first rod (31) is hinged to the lower part of the column (10), and the other end extends away from the column (10). One end of the second rod (32) is hinged to either the column (10) or the sliding unit (20), and the other end extends away from the column (10). Extending away from the column (10), the third rod (33) is arranged vertically, with its lower and upper ends hinged to the ends of the first rod (31) away from the column (10) and the second rod (32) away from the column (10), respectively. The fourth rod (34) is inclined vertically, with its upper and lower ends hinged to the sliding unit (20) and the middle of the second rod (32), respectively. Multiple clamping units (40) are provided on the third rod (33) in a corresponding manner.

2. A pipe jacking device according to claim 1, wherein The bottom of the column (10) is provided with a support plate (13), and a plurality of first hinge seats (131) are provided around the column (10) on the support plate (13). One end of the first rod (31) adjacent to the column (10) is hinged to the corresponding first hinge seat (131).

3. The pipe jacking device according to claim 1, wherein The sliding unit (20) includes: A sliding sleeve (21) is coaxially sleeved on the outer periphery of the column (10) and located above the limiting ring (12). The upper end of the fourth rod (34) is hinged to the sliding sleeve (21). The sliding sleeve (21) is provided with the first lifting lug (211). An elastic element (22) is disposed between the sliding sleeve (21) and the limiting ring (12).

4. The hoisting device for pipe submersion construction according to claim 3, characterized in that, The lower part of the sliding sleeve (21) is provided with an annular receiving groove (212), and the upper part of the elastic element (22) is accommodated in the receiving groove (212).

5. The hoisting device for pipe submersion construction according to claim 3, characterized in that, The sliding unit (20) also includes a support sleeve (23), which is coaxially sleeved on the outer periphery of the column (10). The support sleeve (23) is located between the limiting ring (12) and the sliding sleeve (21). The lower end of the elastic element (22) abuts against the top of the support sleeve (23). The support sleeve (23) is slidably engaged or fixedly connected to the column (10). The end of the second rod (32) adjacent to the column (10) is hinged to the support sleeve (23).

6. The hoisting device for pipe submersion construction according to claim 5, characterized in that, The outer wall of the sliding sleeve (21) is provided with a plurality of second hinge seats (213) at intervals along its circumference, and the upper end of the fourth rod (34) is hinged to the second hinge seat (213); the support sleeve (23) is provided with a plurality of third hinge seats (231) at intervals around its circumference, and the end of the second rod (32) adjacent to the column (10) is hinged to the third hinge seat (231).

7. The hoisting device for pipe submersion construction according to claim 1, characterized in that, The hinge positions of the first rod (31), the second rod (32), the third rod (33) and the fourth rod (34) are respectively detachably set by pluggable pins.

8. The hoisting device for pipe submersion construction according to claim 1, characterized in that, The clamping surface of the clamping unit (40) is provided with an anti-slip pad (41), and the anti-slip pad (41) has an anti-slip texture.

9. A hoisting device for pipe submersion construction according to claim 1, characterized in that, The number of the link unit (30) and the clamping unit (40) are three each.

10. A hoisting device for pipe submersion construction according to claim 1, characterized in that, The hoisting device for pipe submerged construction also includes connecting rods (50), the number of which corresponds to the connecting rod unit (30). One end of the connecting rod (50) is hinged to the end of the second rod body (32) away from the column (10), and the other end forms a positioning groove for accommodating the upper edge of the pipe (60).

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