Steel sling adjusting device

Abstract

The utility model provides a steel sling adjusting device, which relates to the technical field of bridge construction, and comprises a stress support main body, a lifting component is arranged between an upper support plate and a lower support plate, and a fixed pin shaft is arranged on the lifting component; the steel hanging belt sequentially penetrates through the upper through hole, the lifting assembly and the lower through hole, and the fixing pin shaft is arranged on the steel hanging belt in a penetrating mode. According to the steel sling adjusting device provided by the utility model, the lifting assembly is arranged on the stress support main body, and the lifting assembly can lift within a certain range; by changing the height of the lifting assembly, the steel hanging belt fixed to the lifting assembly is lifted, then the steel hanging belt is accurately adjusted, and then accurate adjustment of the hanging basket is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a steel sling adjusting device. Background Technique

[0002] In the construction of bridge projects, the cast-in-place cantilever construction of hanging baskets is widely used in the construction of prestressed concrete continuous beam (rigid frame) bridges and prestressed concrete cable-stayed bridges. Conventional hanging baskets usually include main trusses, rear anchor systems, suspension systems, bottom formwork platform systems, formwork systems and traveling systems. Among them, the suspension system, as the main force-transmitting member, transfers the dead loads generated by the self-weights of the beam segments to be cast, the bottom formwork platform system, etc., and the live loads such as pedestrians and tools on the operation platform to the upper cross beam of the hanging basket. Conventional suspension systems all use steel slings. The steel sling is made of a thick steel plate with full rows of holes and bears weight by means of pins. The spacing between the sling holes is 150 mm, so the minimum spacing for each adjustment is 150 (100) mm, and it is impossible to adjust precisely. Therefore, conventionally, a mechanical jack is used to lift it up and then steel plates of different thicknesses are padded under the support cross beam to achieve a relatively accurate elevation. This method is not only clumsy, troublesome, time-consuming and laborious, but also has a low adjustable precision. There is a risk of falling due to the unstable padding caused by too high padding steel plates. Content of the Utility Model

[0003] The purpose of the utility model is to provide a steel sling adjusting device to alleviate the technical problems of time-consuming, laborious and high-risk in adjusting the height of the hanging basket in the prior art.

[0004] The utility model provides a steel sling adjusting device, which includes a force-bearing support body. The force-bearing support body includes a lower support plate and an upper support plate, and the upper support plate is arranged above the lower support plate;

[0005] An upper through hole is arranged on the upper support plate, and a lower through hole is arranged on the lower support plate; and the upper through hole and the lower through hole are arranged corresponding to each other;

[0006] A lifting assembly is arranged between the upper support plate and the lower support plate, and a fixing pin shaft is arranged on the lifting assembly;

[0007] The steel sling passes through the upper through hole, the lifting assembly and the lower through hole in sequence, and the fixing pin shaft is arranged on the steel sling.

[0008] In an optional embodiment, a side support plate is arranged on both sides of the upper support plate in the first direction. One end of the side support plate is connected to the upper support plate, and the other end is connected to the lower support plate;

[0009] The first direction is the width direction of the upper support plate.

[0010] In an alternative embodiment, the lifting assembly includes two lifting screws and two lifting plates. One end of each lifting screw is rotatably disposed on the lower support plate, and the other end is rotatably disposed on the upper support plate. A lifting block is screwed onto the lifting screw.

[0011] Assembly posts are respectively provided at both ends of the lifting block in a first direction; the two lifting plates are disposed at both ends of the lifting block in the first direction and are connected to the assembly posts.

[0012] The lifting plate is provided with a first assembly hole and a first assembly long hole; one of the two assembly posts on the lifting block is assembled in the first assembly hole of the lifting plate, and the other is assembled in the first assembly long hole.

[0013] A first adjustment hole is provided on the lifting plate, and the fixed pin shaft is assembled in the first adjustment hole.

[0014] In an alternative embodiment, lower fixing plates are respectively provided at both ends of the lower support plate in a first direction. The lower fixing plates are disposed on the lower support plate, and both sides of the lower fixing plates in the first direction are respectively connected to the side support plates.

[0015] A second adjustment hole is provided on the lower fixing plate, and the fixed pin shaft is assembled in the second adjustment hole.

[0016] In an alternative embodiment, a first bevel gear is fixedly provided on the lifting screw. A rotating shaft is rotatably disposed on the side support plate. One end of the rotating shaft extends into the force-bearing support body, and the other end extends outside the force-bearing support body.

[0017] A second bevel gear is provided on the rotating shaft, and the first bevel gear meshes with the second bevel gear.

[0018] In an alternative embodiment, a ratchet is provided on the rotating shaft. A rotating housing is sleeved outside the ratchet. Two ratchet pawls are provided inside the rotating housing. A pawl is provided on the rotating housing, and the pawl is used to switch the engagement of the two ratchet pawls with the ratchet to make the rotating housing rotate synchronously with the ratchet.

[0019] In an alternative embodiment, a rotating rod is provided on the rotating housing, and the rotating rod is used to rotate the rotating housing.

[0020] In an alternative embodiment, an upper cross beam is further included. A plurality of mounting holes are provided along the first direction of the upper cross beam, and the openings of the mounting holes face upward; the lower support plate is disposed on the upper cross beam.

[0021] In an alternative embodiment, fixing holes are provided on the lower support plate, and threaded holes are provided on the upper cross beam. Bolts pass through the fixing holes and are screwed into the threaded holes.

[0022] In an alternative embodiment, it further includes a steel sling, and a plurality of sling holes are provided on the steel sling.

[0023] The force-bearing support body of the steel sling adjusting device provided by the present utility model is provided with a lifting assembly, and the lifting assembly can lift within a certain range; by changing the height of the lifting assembly, the steel sling fixed on the lifting assembly is lifted, thereby precisely adjusting the steel sling, and further realizing the precise adjustment of the hanging basket. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the internal structure of the force-bearing support body of the steel sling adjusting device provided by the embodiment of the present utility model;

[0026] Figure 2 For Figure 1 The schematic diagram of the structure of the force-bearing support body shown;

[0027] Figure 3 For Figure 2 The schematic diagram of the structure of the force-bearing support body from another angle shown;

[0028] Figure 4 It is a schematic diagram of the steel sling adjusting device provided by the embodiment of the present utility model;

[0029] Figure 5 For Figure 4 The schematic diagram of the steel sling adjusting device from another angle shown.

[0030] Icons: 100 - upper support plate; 101 - upper through hole; 200 - lower support plate; 201 - lower through hole; 300 - lifting block; 301 - assembly column; 400 - lifting plate; 401 - first adjustment hole; 402 - first assembly long hole; 500 - lower fixing plate; 501 - second adjustment hole; 600 - lifting screw; 700 - first bevel gear; 800 - second bevel gear; 900 - fixed pin; 110 - side support plate; 120 - rotating housing; 130 - rotating rod; 140 - rotating shaft; 150 - pawl; 160 - steel sling; 161 - sling hole; 170 - upper cross beam; 171 - mounting hole; 180 - force bearing support body. Detailed implementation

[0031] The terms "first", "second", "third", etc. are only used for distinguishing descriptions, do not represent the serial number of arrangement, nor can they be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0033] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "left", "right", "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0034] In the description of the present application, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements.

[0035] Next, the technical solution of the present application will be clearly and completely described with reference to the drawings.

[0036] Refer to Figures 1-5 , the present utility model provides a steel sling adjusting device, including a force bearing support body 180, the force bearing support body 180 includes a lower support plate 200 and an upper support plate 100, and the upper support plate 100 is arranged above the lower support plate 200;

[0037] An upper through-hole 101 is provided on the upper support plate 100, and a lower through-hole 201 is provided on the lower support plate 200; and the upper through-hole 101 and the lower through-hole 201 are arranged corresponding to each other.

[0038] A lifting assembly is provided between the upper support plate 100 and the lower support plate 200, and a fixed pin shaft 900 is provided on the lifting assembly.

[0039] The steel sling 160 passes through the upper through-hole 101, the lifting assembly, and the lower through-hole 201 in sequence, and the fixed pin shaft 900 is inserted into the steel sling 160.

[0040] In some embodiments, the upper through-hole 101 of the upper support plate 100 of the force-bearing support body 180 of the steel sling adjusting device and the lower through-hole 201 of the lower support plate 200 are arranged corresponding to each other, and the steel sling 160 can be inserted from the upper through-hole 101 and pass out from the lower through-hole 201.

[0041] Since the distance between the sling holes 161 on the steel sling 160 is fixed, when it is necessary to adjust the height of the steel sling 160, only the distance between two sling holes 161 can be adjusted, and the height of the steel sling 160 cannot be further accurately adjusted, that is, the height of the hanging basket cannot be further adjusted.

[0042] In the prior art, when using a mechanical jack to lift the sling, manual operation is inconvenient. By stuffing multiple layers of steel plates to support the sling steel pin, the supported steel plates are too high and thus not firmly supported, resulting in a risk of falling. The adjustable elevation accuracy is difficult to meet the construction requirements, and the elevation adjustment cannot be quickly performed. When the steel sling 160 encounters a lifting impact, the supported steel plates are extremely easy to slip and fall, causing injury to people.

[0043] The steel sling adjusting device realizes the adjustment of the height of the steel sling 160 by connecting the steel sling 160 with the lifting assembly and then adjusting the height of the lifting assembly.

[0044] Refer to Figure 1 and Figure 2 , in an alternative embodiment, a side support plate 110 is respectively provided on both sides of the upper support plate 100 in the first direction. One end of the side support plate 110 is connected to the upper support plate 100, and the other end is connected to the lower support plate 200.

[0045] The first direction is the width direction of the upper support plate 100.

[0046] Side support plates 110 are respectively fixedly provided on both sides of the lower support plate 200 in the first direction. The upper ends of the side support plates 110 are connected to both sides of the upper support plate 100 in the first direction, so that the upper support plate 100 is fixed to the upper end of the lower support plate 200.

[0047] Refer toFigure 1 In an alternative embodiment, the lifting assembly includes two lifting screws 600 and two lifting plates 400. One end of each lifting screw 600 is rotatably disposed on the lower support plate 200, and the other end is rotatably disposed on the upper support plate 100. A lifting block 300 is screwed onto the lifting screw 600.

[0048] Assembly columns 301 are respectively provided at both ends of the lifting block 300 in a first direction. The two lifting plates 400 are disposed at both ends of the lifting block 300 in the first direction and are connected to the assembly columns 301.

[0049] The lifting plate 400 is provided with a first assembly hole and a first assembly slot 402. One of the two assembly columns 301 on the lifting block 300 is assembled in the first assembly hole of the lifting plate 400, and the other is assembled in the first assembly slot 402.

[0050] A first adjustment hole 401 is provided on the lifting plate 400, and the fixed pin 900 is assembled in the first adjustment hole 401.

[0051] The lifting assembly includes two lifting screws 600. One end of each lifting screw is rotatably disposed on the upper support plate 100, and the other end is rotatably disposed on the lower support plate 200. A lifting block 300 is screwed onto each lifting screw. The two lifting blocks 300 are connected by a lifting plate 400, so that the lifting block 300 cannot rotate on the lifting screw. When the lifting screw rotates, the lifting block 300 can move up and down but cannot rotate with the lifting screw.

[0052] Two assembly columns 301 are provided on the lifting block 300. Both ends of the lifting plate 400 are respectively assembled on the lifting columns of one lifting block 300, thus realizing the connection between the lifting plate 400 and the lifting block 300.

[0053] A first adjustment hole 401 is provided on the lifting plate 400, and the first adjustment holes 401 on the two lifting plates 400 are correspondingly arranged. By changing the height of the lifting assembly, the height of the first adjustment hole 401 is made to coincide with the sling hole 161 on the steel sling 160. Then, the fixed pin 900 is sequentially inserted into the first adjustment hole 401 of one lifting plate 400, the sling hole 161 of the steel sling 160, and the first adjustment hole 401 of the other lifting plate 400, thus realizing inserting the fixed pin 900 into the sling hole 161 of the steel sling 160 and connecting the steel sling 160 to the lifting assembly.

[0054] The lifting plate 400 is provided with a first assembly hole and a first assembly long hole 402, and the first assembly long hole 402 extends in the horizontal direction; when the lifting speeds of the two lifting blocks 300 are different, the assembly column 301 can move within a certain range in the first assembly long hole 402 to avoid damaging the lifting screw rod 600; the lifting plate 400 arranged in this way can swing within a certain range, enabling the two lifting blocks 300 to lift synchronously within a certain error range, reducing the operation difficulty.

[0055] In an alternative embodiment, lower fixing plates 500 are respectively arranged at two ends of the lower support plate 200 in the first direction, the lower fixing plates 500 are arranged on the lower support plate 200, and both sides of the lower fixing plates 500 in the first direction are respectively connected to the side support plates 110;

[0056] A second adjustment hole 501 is arranged on the lower fixing plate 500, and the fixed pin shaft 900 is assembled in the second adjustment hole 501.

[0057] Lower fixing plates 500 are arranged on the lower support plate 200, two lower fixing plates 500 are arranged on the lower support plate 200, the steel sling 160 is arranged between the two lower fixing plates 500, and both ends of the lower fixing plates 500 are connected to the side support plates 110.

[0058] A second adjustment hole 501 is arranged on the lower fixing plate 500, and the fixed pin shaft 900 sequentially passes through the second adjustment hole 501 of one lower fixing plate 500, the sling hole 161 of the steel sling 160, and the second adjustment hole 501 of the other lower fixing plate 500, thereby fixing the steel sling 160 on the lower fixing plate 500.

[0059] That is, when the lifting assembly needs to be separated from the steel sling 160, by aligning the sling hole 161 of the steel sling 160 with the second adjustment hole 501 of the lower fixing plate 500, the steel sling 160 is fixed on the lower fixing plate 500, and at this time, the lifting assembly can be lifted and lowered independently.

[0060] Refer to Figure 1 , in an alternative embodiment, a first bevel gear 700 is fixedly arranged on the lifting screw rod 600, a rotating shaft 140 is rotatably arranged on the side support plate 110, one end of the rotating shaft 140 extends into the force-bearing support body 180, and the other end extends outside the force-bearing support body 180;

[0061] A second bevel gear 800 is arranged on the rotating shaft 140, and the first bevel gear 700 meshes with the second bevel gear 800.

[0062] In some embodiments, a first bevel gear 700 is fixedly arranged on the lifting screw rod 600, a rotating shaft 140 is rotatably configured on the side support plate 110, and a second bevel gear 800 is arranged on the rotating shaft 140; the first bevel gear 700 meshes with the second bevel gear 800. When the second bevel gear 800 rotates, it drives the first bevel gear 700 to rotate, thereby causing the lifting screw rod 600 to rotate. Since the lifting block 300 cannot rotate along with the lifting screw rod 600, the lifting block 300 moves up and down, thereby adjusting the height of the lifting plate 400 and realizing the height adjustment of the first adjustment hole 401, so that the first adjustment hole 401 can coincide with the sling hole 161 on the steel sling 160.

[0063] In an alternative embodiment, a ratchet is arranged on the rotating shaft 140, a rotating housing 120 is sleeved outside the ratchet, and two pawls are arranged inside the rotating housing 120; a pawl 150 is arranged on the rotating housing 120, and the pawl 150 is used to switch the two pawls to mesh with the ratchet, so that the rotating housing 120 rotates synchronously with the ratchet.

[0064] In an alternative embodiment, a rotating rod 130 is arranged on the rotating housing 120, and the rotating rod 130 is used to rotate the rotating housing 120.

[0065] To facilitate the rotation of the rotating shaft 140, a ratchet is arranged on the rotating shaft 140, and a rotating housing 120 is sleeved on the ratchet; a rotating rod 130 is arranged on the rotating housing 120, and the rotating housing 120 is rotated by the rotating rod 130; to enable the rotating housing 120 to drive the rotating shaft 140 to rotate, a pawl 150 is arranged on the rotating housing 120, and the two pawls of the rotating housing 120 can be switched to mesh with the ratchet through the pawl 150, thereby realizing that the rotating housing 120 can drive the ratchet to rotate in the forward or reverse direction.

[0066] Specifically, one end of the pawl is hinged to the rotating housing 120, the two pawls are arranged in a V shape, and a return spring is arranged between the pawl and the inner wall of the rotating housing 120. The return spring makes the pawl tend to move towards the ratchet. When the pawl 150 presses one of the pawls against the return spring, that is, the pawl moves away from the ratchet, and the other pawl meshes with the ratchet, realizing that the rotating housing 120 can drive the ratchet to rotate in different rotation directions, that is, enabling the lifting block 300 to move up and down; other structures can also be adopted for the pawl and the ratchet, such as the structure similar to a ratchet wrench, etc.

[0067] Refer to Figure 4, in an alternative embodiment, it further includes an upper cross beam 170, a plurality of mounting holes 171 are provided along a first direction of the upper cross beam 170, and openings of the mounting holes 171 face upward; the lower support plate 200 is disposed on the upper cross beam 170.

[0068] In an alternative embodiment, fixing holes are provided on the lower support plate 200, threaded holes are provided on the upper cross beam 170, and bolts pass through the fixing holes and are screwed into the threaded holes.

[0069] Refer to Figure 5 , in an alternative embodiment, it further includes a steel sling 160, and a plurality of sling holes 161 are provided on the steel sling 160.

[0070] A plurality of mounting holes 171 are provided on the upper cross beam 170, and one or more lower support plates 200 are provided on the upper cross beam 170 according to actual requirements; generally, fixing holes are provided on the lower support plate 200, threaded holes are provided on the upper cross beam 170, and bolts are inserted into the fixing holes from the upper end of the lower support plate 200 and then screwed into the threaded holes, so as to connect the lower support plate 200 with the upper cross beam 170.

[0071] A plurality of sling holes 161 are provided on the steel sling 160, and the plurality of sling holes 161 are spaced apart.

[0072] A lifting assembly is provided on the force-bearing support body 180 of the steel sling adjusting device provided by the present utility model, and the lifting assembly can be lifted within a certain range; by changing the height of the lifting assembly, the steel sling 160 fixed on the lifting assembly is lifted, thereby precisely adjusting the steel sling 160, and further realizing the precise adjustment of the hanging basket; the problem that the height of the steel sling 160 cannot be continuously and precisely adjusted in traditional construction is solved.

[0073] Currently, the spacing between the sling holes 161 on the steel sling 160 is 150 mm. During the conventional sling elevation adjustment process, when the elevation change exceeds 150 mm each time, a hoisting machine is required to cooperate to lift the sling, reinsert and pull out the steel pin shaft, and use a mechanical jack for fine elevation adjustment. Then, steel plates with different thicknesses are stuffed at the position of the steel pin shaft pad pillow. This method has a large installation difficulty and a high safety risk.

[0074] The lower support plate 200 of the force-bearing support body 180 of the steel sling adjustment device can be fixed to the upper crossbeam 170 by installing screws, and the lower fixing plate 500 is fixed on the lower support plate 200. A second adjustment hole 501 is provided on the lower fixing plate 500. When the elevation change of the steel sling 160 exceeds 150mm, the sling hole 161 on the steel sling 160 can coincide with the second adjustment hole 501, and the fixing pin 900 is inserted to fix the steel sling 160 and the lower fixing plate 500. At this time, the fixing pin 900 needs to be pulled out to disconnect the lifting plate 400 from the steel sling 160, and the rotating rod 130 is shaken to rotate the second bevel gear 800, thereby driving the first bevel gear 700 to rotate. The first bevel gear 700 and the lifting plate 500 are connected. The lowering screw 600 is fixedly connected, thereby driving the lifting screw 600 to rotate. The lifting screw 600 passes through the lifting block 300 to realize the lifting and lowering of the lifting block 300. The lifting block 300 is connected to the lifting plate 400, so that the lifting plate 400 is lifted and lowered by a sling hole 161, and the fixed pin 900 is reinserted to connect the lifting plate 400 with the steel sling 160. The fixed pin 900 is pulled out to disconnect the steel sling 160 from the lower fixed plate 500. At this time, the steel sling 160 can be used to simultaneously shake the two rotating rods 130 clockwise to make the lifting plate 400 accurately rise to a higher elevation. By turning the dial claw 150 to adjust the direction, the rotating rod 130 can be shaken counterclockwise to make the steel sling 160 follow the lifting plate 400 to accurately descend to a lower elevation. After the steel sling 160 is adjusted to the design construction elevation, the lifting plate 400 is removed, and the lifting screw 600 and the lifting block 300 , the first bevel gear 700 , and the second bevel gear 800 form a self-locking structure and are sufficient to withstand the construction load transmitted by the steel sling 160 .

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A steel sling adjusting device, characterized in that, It includes a force-bearing support body (180), and the force-bearing support body (180) includes a lower support plate (200) and an upper support plate (100), and the upper support plate (100) is arranged above the lower support plate (200); An upper through hole (101) is arranged on the upper support plate (100), and a lower through hole (201) is arranged on the lower support plate (200); and the upper through hole (101) and the lower through hole (201) are arranged corresponding to each other; A lifting assembly is arranged between the upper support plate (100) and the lower support plate (200), and a fixed pin shaft (900) is arranged on the lifting assembly; A steel sling (160) passes through the upper through hole (101), the lifting assembly and the lower through hole (201) in sequence, and the fixed pin shaft (900) is arranged on the steel sling (160).

2. The steel sling adjusting device according to claim 1, characterized in that, On both sides of the upper support plate (100) in the first direction, a side support plate (110) is respectively arranged. One end of the side support plate (110) is connected to the upper support plate (100), and the other end is connected to the lower support plate (200); The first direction is the width direction of the upper support plate (100).

3. The steel sling adjusting device according to claim 2, characterized in that, The lifting assembly includes two lifting screw rods (600) and two lifting plates (400), and one end of the lifting screw rod (600) is rotatably configured on the lower support plate (200), and the other end is rotatably configured on the upper support plate (100). A lifting block (300) is screwed on the lifting screw rod (600); Assembly columns (301) are respectively arranged at both ends of the lifting block (300) in the first direction; the two lifting plates (400) are arranged at both ends of the lifting block (300) in the first direction and are connected to the assembly columns (301); A first assembly hole and a first assembly long hole (402) are arranged on the lifting plate (400); one of the two assembly columns (301) on the lifting block (300) is assembled in the first assembly hole of the lifting plate (400), and the other is assembled in the first assembly long hole (402); A first adjustment hole (401) is arranged on the lifting plate (400), and the fixed pin shaft (900) is assembled in the first adjustment hole (401).

4. The steel sling adjusting device according to claim 2, characterized in that, Lower fixing plates (500) are respectively arranged at both ends of the lower support plate (200) in the first direction. The lower fixing plates (500) are arranged on the lower support plate (200), and both sides of the lower fixing plates (500) in the first direction are respectively connected to the side support plates (110); A second adjustment hole (501) is arranged on the lower fixing plate (500), and the fixed pin shaft (900) is assembled in the second adjustment hole (501).

5. The steel sling adjusting device according to claim 3, characterized in that, A first bevel gear (700) is fixedly arranged on the lifting screw rod (600). A rotating shaft (140) is rotatably configured on the side support plate (110). One end of the rotating shaft (140) extends into the force-bearing support body (180), and the other end extends out of the force-bearing support body (180); A second bevel gear (800) is provided on the rotation axis (140), and the first bevel gear (700) meshes with the second bevel gear (800).

6. The steel sling adjusting device according to claim 5, characterized in that A ratchet is provided on the rotation axis (140). A rotation housing (120) is sleeved outside the ratchet. Two pawls are provided inside the rotation housing (120). A pawl (150) is provided on the rotation housing (120). The pawl (150) is used to switch the two pawls to mesh with the ratchet, so that the rotation housing (120) rotates synchronously with the ratchet.

7. The steel sling adjusting device according to claim 6, characterized in that, A rotation rod (130) is provided on the rotation housing (120). The rotation rod (130) is used to rotate the rotation housing (120).

8. The steel sling adjusting device according to claim 7, characterized in that, It further includes an upper cross beam (170). A plurality of mounting holes (171) are provided along the first direction of the upper cross beam (170), and the openings of the mounting holes (171) face upward. The lower support plate (200) is provided on the upper cross beam (170).

9. The steel sling adjusting device according to claim 8, wherein, Fixing holes are provided on the lower support plate (200), and threaded holes are provided on the upper cross beam (170). Bolts pass through the fixing holes and are screwed with the threaded holes.

10. The steel sling adjusting device according to any one of claims 1-9, characterized in that, It further includes a steel sling (160). A plurality of sling holes (161) are provided on the steel sling (160).

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