A hoist for hoisting a swing axle type spreader saddle bearing plate and a method of using the same

Abstract

The present application relates to the technical field of suspension bridge, and discloses a lifting appliance for hoisting a swing axle type scattered cable saddle bearing plate and a use method thereof, a through hole is formed in the bearing plate; the lifting appliance comprises a first side block, a second side block and a middle block; the first side block has a first side surface, the first side surface comprises a first surface and a first inclined surface connected from top to bottom, and the included angle between the first surface and the first inclined surface is an obtuse angle; the second side block has a second side surface, the second side surface comprises a second surface and a second inclined surface connected from top to bottom, and the included angle between the second surface and the second inclined surface is an obtuse angle; in the use state, the first side block and the second side block are arranged in the through hole of the bearing plate, the middle block is tightly wedged between the first side block and the second side block, the first inclined surface and the second inclined surface are respectively in linear contact with the bottom surface of the bearing plate, and the linear contact positions are locked and fixed. The present application can effectively improve the hoisting stability and reduce the damage risk of the scattered cable saddle bearing plate.

Description

Technical Field

[0001] This invention relates to the field of suspension bridge technology, specifically to a lifting tool for hoisting a swing-shaft type cable saddle bearing plate and its usage method. Background Technology

[0002] The cable saddle is a core load-bearing component of a suspension bridge. Its main functions are to support the main cable, smoothly adjust the alignment of the main cable, and orderly distribute the main cable strands to the anchorage. During construction and operation, the horizontal force of the main cable on both sides of the cable saddle continuously changes due to factors such as main girder loading, temperature, wind, and live load. To balance the difference in horizontal force between the main cables on both sides of the cable saddle and avoid additional stress, the cable saddle must have the ability to swing freely in the longitudinal direction. Therefore, the pendulum-type cable saddle is widely used in long-span suspension bridges.

[0003] Currently, the swing-axis type cable saddle mainly achieves swinging by relative rotation between the upper and lower bearing plates. The bearing plates are usually installed by single-point magnetic suction hoisting. Due to the large weight of the bearing plates, single-point magnetic suction will cause local stress concentration on the bearing plates, which will lead to deformation. Moreover, if the magnetic suction is unstable, it is easy for the bearing plates to fall, which will not only damage the bearing plates, but also pose a serious safety hazard. Summary of the Invention

[0004] The technical objective of this invention is to provide a lifting tool for hoisting a swing-axis type cable saddle plate and its usage method, which effectively improves hoisting stability and reduces the risk of damage to the cable saddle plate, addressing the special characteristics of the aforementioned swing-axis type cable saddle and the shortcomings of the prior art.

[0005] The first technical solution adopted in this invention is as follows: A lifting tool for hoisting a swing-axis type cable saddle bearing plate, wherein the bearing plate is provided with a through hole; The lifting device includes a first side block, a second side block, and a middle block; The first side block has a first side surface, which includes a first surface and a first inclined surface connected from top to bottom, and the included angle between the first surface and the first inclined surface is an obtuse angle; the second side block has a second side surface, which includes a second surface and a second inclined surface connected from top to bottom, and the included angle between the second surface and the second inclined surface is an obtuse angle; In the working state, the first side block and the second side block are inserted into the through holes of the bearing plate, the middle block is wedged between the first side block and the second side block, and the first inclined surface and the second inclined surface respectively have line contact with the bottom surface of the bearing plate, and the line contact position is locked and fixed.

[0006] The aforementioned technical measures ensure that the first and second inclined surfaces make line contact with the bottom surface of the bearing plate during use. Simultaneously, the intermediate block weds between the first and second side blocks, locking the line contact position securely. This effectively prevents the first, second, and intermediate blocks from slipping out of the through-hole, thereby improving hoisting stability, reducing the risk of bearing plate damage, and offering high safety and simple operation. Furthermore, the line contact between the first and second inclined surfaces and the bottom surface of the bearing plate increases the contact range, effectively preventing localized stress concentration and further reducing the risk of bearing plate damage.

[0007] Furthermore, the first side block also has a third side surface, and the second side block also has a fourth side surface; The intermediate block has a fifth side and a sixth side; In the working state, the fifth side of the lifting device is wedge-fitted with the third side of the first side block, and the sixth side is wedge-fitted with the fourth side of the second side block.

[0008] Furthermore, the third side is a planar structure, and correspondingly, the fifth side is a planar structure adapted to the third side; The fourth side is a planar structure, and correspondingly, the sixth side is a planar structure adapted to the fourth side.

[0009] The above-mentioned technical measures, by adopting a planar structure wedge-tight fit, can increase the contact area between the middle block and the first and second side blocks, so that the wedge-tightening pressure is evenly distributed and the stability is improved.

[0010] Furthermore, the first side block has a first lifting hole that penetrates the first side and the third side; the second side block has a second lifting hole that penetrates the second side and the fourth side; and the middle block has a third lifting hole that penetrates the fifth side and the sixth side. The lifting device in its working state has the first lifting hole, the second lifting hole, and the third lifting hole interconnected.

[0011] The above-mentioned technical measures, by setting up interconnected first, second, and third lifting holes, facilitate lifting while ensuring even distribution of lifting force, effectively avoiding local stress concentration and reducing the risk of damage to the lifting equipment.

[0012] Furthermore, a threaded hole is provided on the top of the intermediate block, and a bolt is fitted into the threaded hole.

[0013] The above-mentioned technical measures, by setting bolts, allow the middle block to be removed by applying a pulling force to the bolts, thus facilitating the disassembly of the middle block.

[0014] Furthermore, the bottom surfaces of both the first and second side blocks are arc-shaped inclined structures.

[0015] The above-mentioned technical measures set the bottom surfaces of the first side block and the second side block as an arc-shaped inclined structure. After the middle block is removed, the first side block and the second side block tilt under the action of the arc-shaped inclined structure, thereby facilitating the disassembly of the first side block and the second side block.

[0016] Furthermore, the bottom surface of the intermediate block has a planar structure.

[0017] The above-mentioned technical measures, by setting the bottom surface of the intermediate block as a planar structure, can ensure the stable placement of the lifting equipment during hoisting, effectively prevent the lifting equipment from tilting, and improve stability.

[0018] Furthermore, in the use state, the first side block and the second side block are respectively in clearance fit with the wall of the through hole.

[0019] The above-mentioned technical measures involve the first and second side blocks respectively fitting with the wall of the through hole with a clearance, which facilitates disassembly and assembly, and can adapt to the stress changes generated during lifting.

[0020] Furthermore, both the first surface and the first inclined surface are curved surfaces; Both the second surface and the second inclined surface are curved surfaces.

[0021] The above-mentioned technical measures, by setting the first surface, the first inclined surface, the second surface and the second inclined surface as an arc surface structure, can reduce the damage to the bearing plate during the disassembly or hoisting of the first side block and the second side block.

[0022] The second technical solution adopted in this invention is as follows: A method for using the lifting tool for hoisting the swing-shaft type cable saddle bearing plate as described in the above technical solution 1, the method comprising the following steps: S1. Insert the first side block and the second side block into the through hole from the top of the bearing plate with their bottoms facing down, so that the first inclined surface and the second inclined surface are in line contact with the bottom surface of the bearing plate. S2. With the bottom facing down, the middle block is wedged axially from the top of the bearing plate along the through hole between the first side block and the second side block, so that the first inclined surface and the second inclined surface are locked and fixed at the line contact position with the bottom surface of the bearing plate. S3. Lift the first side block, the second side block, and the middle block to install the bearing plate.

[0023] One or more technical solutions provided by this invention have at least the following technical effects or advantages: This invention utilizes the first and second inclined surfaces to form a line contact with the bottom surface of the bearing plate during use. Simultaneously, a middle block wedges between the first and second side blocks, locking the line contact position securely. This effectively prevents the first, second, and middle blocks from slipping out of the through-hole, thereby improving hoisting stability, reducing the risk of bearing plate damage, and offering high safety and simple operation. Furthermore, the line contact between the first and second inclined surfaces and the bottom surface of the bearing plate increases the contact range, effectively preventing localized stress concentration and further reducing the risk of bearing plate damage. Attached Figure Description

[0024] The accompanying drawings, which are provided to further illustrate embodiments of the invention and constitute a part of this invention, are not intended to limit the scope of the invention. Figure 1 This is a structural diagram of the upper bearing plate; Figure 2 This is a structural schematic diagram of the lower support plate; Figure 3 This is a schematic diagram of one structure of the lifting device in this invention; Figure 4 This is a schematic diagram of the disassembly structure of the lifting device in this invention; Figure 5 This is a schematic diagram of the structure of the first side block in this invention; Figure 6 This is a schematic diagram of the structure of the intermediate block in this invention; Figure 7 This is a schematic diagram of the usage state when hoisting the upper support plate in this invention; Figure 8 This is a schematic diagram of the usage state when hoisting the lower support plate in this invention; Wherein, 1-through hole; 2-first side block; 3-second side block; 4-middle block; 5-first surface; 6-first inclined surface; 7-first lifting hole; 8-third lifting hole; 9-threaded hole; 10-upper bearing plate; 11-lower bearing plate. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0027] Reference Figures 1-8This embodiment provides a lifting tool for hoisting a swing-shaft type cable saddle bearing plate. The bearing plate has through holes 1. The bearing plate includes an upper bearing plate 10 and a lower bearing plate 11. Both the upper bearing plate 10 and the lower bearing plate 11 have multiple evenly arranged through holes 1. One through hole 1 corresponds to a set of lifting tools.

[0028] In this embodiment, two sets of lifting tools are preferably used, and the two sets of lifting tools are symmetrically arranged on the upper support plate 10 or the lower support plate 11 to make the lifting force evenly distributed and improve the lifting stability.

[0029] The lifting device includes a first side block 2, a second side block 3, and a middle block 4; The first side block has a first side surface, which includes a first surface 5 and a first inclined surface 6 connected from top to bottom. Both the first surface 5 and the first inclined surface 6 are arc-shaped structures. The included angle between the first surface 5 and the first inclined surface 6 is an obtuse angle. The second side block has a second side surface, which includes a second surface and a second inclined surface connected from top to bottom. The included angle between the second surface and the second inclined surface is an obtuse angle. Both the second surface and the second inclined surface are arc-shaped structures.

[0030] In the working state, the lifting device has the first side block 2 and the second side block 3 inserted into the through hole 1 of the bearing plate, the middle block 4 wedged between the first side block 2 and the second side block 3, and the first inclined surface 6 and the second inclined surface respectively in line contact with the bottom surface of the bearing plate, and the line contact position is locked and fixed.

[0031] When the lifting device is in use, the first side block 2 and the second side block 3 are respectively in clearance fit with the wall of the through hole 1.

[0032] The first side block 2 and the second side block 3 have the same structure.

[0033] The first side block 2 also has a third side, and the second side block 3 also has a fourth side; Middle block 4 has a fifth side and a sixth side; When the lifting device is in use, the fifth side is wedged tightly with the third side of the first side block, and the sixth side is wedged tightly with the fourth side of the second side block.

[0034] The third side is a planar structure, and correspondingly, the fifth side is a planar structure that adapts to the third side. The fourth side is a planar structure, and correspondingly, the sixth side is a planar structure that matches the fourth side.

[0035] The first side block 2 has a first lifting hole 7 that passes through the first side and the third side; the second side block 3 has a second lifting hole that passes through the second side and the fourth side; the middle block 4 has a third lifting hole 8 that passes through the fifth side and the sixth side. When the lifting device is in use, the first lifting hole 7, the second lifting hole and the third lifting hole 8 are interconnected.

[0036] Among them, the first lifting hole 7, the second lifting hole and the third lifting hole 8 have the same diameter.

[0037] The top of the intermediate block 4 has a threaded hole 9, and a bolt is installed in the threaded hole 9.

[0038] The bottom surfaces of the first side block 2 and the second side block 3 are both curved slope structures. The bottom surface of the middle block 4 is a flat structure.

[0039] This embodiment also proposes a method for using the lifting tool for hoisting the above-mentioned swing-axis type cable saddle bearing plate, the method including the following steps: S1. The first side block 2 and the second side block 3 are respectively inserted into the through hole 1 from the top of the bearing plate along the through hole 1 with the bottom facing down, so that the first inclined surface 6 and the second inclined surface are in line contact with the bottom surface of the bearing plate. S2. With the bottom facing down, the middle block 4 is wedged axially from the top of the bearing plate along the through hole 1 between the first side block 2 and the second side block 3, so that the first inclined surface 6 and the second inclined surface are locked and fixed at the line contact position with the bottom surface of the bearing plate. S3. Lift the first side block 2, the second side block 3 and the middle block 4 to install the bearing plate.

[0040] The usage method also includes: S4. Hoist the bearing plate into the corresponding mounting slot, apply a lifting force to the bolt on the top of the middle block 4 to remove the middle block 4. After the middle block 4 is removed, the first side block 2 and the second side block 3 tilt. Apply a lifting force to the first side block 2 and the second side block 3 respectively to remove the first side block 2 and the second side block 3, and complete the disassembly of the lifting device.

[0041] When the support plate is hoisted into the corresponding installation slot, the bottom surface of the middle block 4 of the hoisting tool contacts the slot. By setting the bottom surface of the middle block 4 as a flat structure, stable placement can be ensured.

[0042] In this embodiment, as Figure 7 or Figure 8 As shown, "from top to bottom" refers to the direction from the top of the bearing plate to the bottom of the bearing plate when the lifting device is in use. The "top" and "bottom" mentioned above are both based on this direction. Going upward along this direction is the top, and going downward along this direction is the bottom.

[0043] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0044] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A lifting tool for hoisting a swing-shaft type cable saddle bearing plate, wherein the bearing plate is provided with a through hole (1); Its features are: The lifting device includes a first side block (2), a second side block (3), and a middle block (4); The first side block has a first side surface, which includes a first surface (5) and a first inclined surface (6) connected from top to bottom, and the included angle between the first surface (5) and the first inclined surface (6) is an obtuse angle; the second side block has a second side surface, which includes a second surface and a second inclined surface connected from top to bottom, and the included angle between the second surface and the second inclined surface is an obtuse angle; In the use state, the first side block (2) and the second side block (3) are inserted into the through hole (1) of the bearing plate, the middle block (4) is wedged between the first side block (2) and the second side block (3), the first inclined surface (6) and the second inclined surface respectively make line contact with the bottom surface of the bearing plate, and the line contact position is locked and fixed.

2. The lifting tool for hoisting a swing-shaft type cable saddle bearing plate according to claim 1, characterized in that: The first side block (2) also has a third side surface, and the second side block (3) also has a fourth side surface; The intermediate block (4) has a fifth side and a sixth side; In the working state, the fifth side of the lifting device is wedge-fitted with the third side of the first side block, and the sixth side is wedge-fitted with the fourth side of the second side block.

3. The lifting tool for hoisting a swing-shaft type cable saddle bearing plate according to claim 2, characterized in that: The third side is a planar structure, and correspondingly, the fifth side is a planar structure adapted to the third side. The fourth side is a planar structure, and correspondingly, the sixth side is a planar structure adapted to the fourth side.

4. The lifting tool for hoisting a swing-shaft type cable saddle bearing plate according to claim 2, characterized in that: The first side block (2) has a first lifting hole (7) that passes through the first side and the third side; the second side block (3) has a second lifting hole that passes through the second side and the fourth side; the middle block (4) has a third lifting hole (8) that passes through the fifth side and the sixth side. When the lifting device is in use, the first lifting hole (7), the second lifting hole and the third lifting hole (8) are interconnected.

5. The lifting tool for hoisting a swing-shaft type cable saddle bearing plate according to claim 1, characterized in that: The top of the intermediate block (4) is provided with a threaded hole (9), and a bolt is installed in the threaded hole (9).

6. The lifting tool for hoisting a swing-shaft type cable saddle bearing plate according to claim 1, characterized in that: The bottom surfaces of the first side block (2) and the second side block (3) are both arc-shaped inclined structures.

7. The lifting tool for hoisting a swing-shaft type cable saddle bearing plate according to claim 1, characterized in that: The bottom surface of the intermediate block (4) is a planar structure.

8. The lifting tool for hoisting a swing-shaft type cable saddle bearing plate according to claim 1, characterized in that: In the working state, the first side block (2) and the second side block (3) are respectively in clearance fit with the wall of the through hole (1).

9. The lifting tool for hoisting a swing-shaft type cable saddle bearing plate according to claim 1, characterized in that: Both the first surface (5) and the first inclined surface (6) are arc-shaped structures; Both the second surface and the second inclined surface are curved surfaces.

10. A method of using a lifting device for hoisting a swing-shaft type cable saddle bearing plate as described in any one of claims 1 to 9, characterized in that: The method of use includes the following steps: S1. Insert the first side block (2) and the second side block (3) into the through hole (1) axially from the top of the bearing plate with the bottom facing down, so that the first inclined surface (6) and the second inclined surface are in line contact with the bottom surface of the bearing plate. S2. With the bottom facing down, the middle block (4) is axially wedged between the first side block (2) and the second side block (3) from the top of the bearing plate along the through hole (1), so that the first inclined surface (6) and the second inclined surface are locked and fixed at the line contact position with the bottom surface of the bearing plate. S3. Lift the first side block (2), the second side block (3) and the middle block (4) to install the bearing plate.

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