Bridge suspension support

Abstract

The utility model discloses a bridge suspension support which is characterized in that a clamping arm is of an L-shaped structure, a bracket extending towards the direction of a precast beam is arranged at the bottom of the clamping arm, a floating supporting plate is embedded above the bracket, the supporting plate is vertically connected with the bracket in a sliding mode, and a vertically-arranged spring set is connected between the supporting plate and the bracket; the cross beam is provided with pressing plates extending downwards and a driving motor driving the pressing plates to vertically ascend and descend, the pressing plates are symmetrically arranged on the left side and the right side of the cross beam and correspond to the supporting plates in position, and the pressing plates are vertically and slidably connected with the cross beam and are in transmission connection with the driving motor. Through the arrangement of the pressing plate and the supporting plate, under the action of the driving motor, the pressing plate moves downwards relative to the cross beam to apply vertical pressure to the precast beam, then the precast beam presses the supporting plate downwards, the spring set is compressed and contracted, reverse spring force is applied to the precast beam, and the fitting degree of the pressing plate, the supporting plate and the precast beam is higher; the installation gap between the bridge suspension support and the precast beam is reduced, and the precast beam is prevented from shaking and jumping in the hoisting process.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge lifting tools, in particular to a bridge suspension bracket. Background Technique

[0002] With the acceleration of infrastructure projects in China, the transportation network is becoming increasingly complete, and bridge construction plays an essential role. To improve construction efficiency and shorten the project cycle, precast beams have become a common bridge structure. Placing a large amount of pouring work on the ground and配合lifting equipment for hoisting and transportation can effectively simplify the construction process. Currently, when hoisting precast beams, first, tools such as iron chains and ropes are used for bundling, and then a hook is used to connect in series with the precast beam, and the lifting equipment is used to牵引and lift. However, in this bundling method, it is easy to发生偏移松脱during the hoisting process, and there is a risk of falling from a height.

[0003] Patent No. ZL 202422287043.4 discloses a bridge hoisting tool. A rotary mechanism is assembled on the upper support beam, a lower support beam is arranged below the upper support beam, the lower support beam is rotatably assembled on the upper support beam through the rotary mechanism, and L-shaped arms are arranged at both ends of the lower support beam. The upper end of the arm is slidably connected to the lower support beam, and a horizontally arranged forklift is detachably fixed at the lower end of the arm. An electric push rod parallel to the lower support beam is arranged inside the arm. One end of the electric push rod is铰接on the arm, and the other end of the electric push rod is铰接on the fixing plate at the bottom end of the lower support beam; First limiting mechanisms for阻挡the movement of the bridge are arranged on both the front and back sides of the arm. The above-mentioned patented solution can replace tools such as iron chains and ropes for bundling, which can improve the stability of precast beam hoisting. However, it cannot guarantee the贴合度between the precast beam and the hoisting tool, and there is a certain间隙between the two. When the above间隙is较大, the precast beam is容易to晃动and蹿动during hoisting, thus affecting the balance and stability of hoisting and加重the牵引负担of the lifting equipment. Summary of the Invention

[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art and propose a bridge suspension bracket.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A bridge suspension bracket for hoisting precast beams, comprising a cross beam arranged in the front-back direction, moving platforms symmetrically arranged on both the front and back sides of the cross beam, and clamping arms arranged below the moving platforms. The moving platforms are slidably connected to the cross beam in the front-back direction, and the clamping arms are slidably connected to the moving platforms vertically. The characteristics are:

[0007] The clamping arm is of an L-shaped structure, and a bracket extending towards the precast beam is arranged at the bottom. A floating pallet is嵌装above the bracket, the pallet is slidably connected to the bracket vertically, and a vertically arranged spring group is connected between the two; It should be noted that there are some inaccuracies or unclear expressions in the original text, such as "配合起重设备进行吊装运输" which is not very clear in meaning, and "发生偏移松脱" and "阻挡桥梁移动" and "贴合度" are not standard English expressions. I have tried my best to translate according to the context. Also, some words like "牵引" are not accurately translated as there may be more appropriate terms in the context of lifting technology, but based on the rules, the above translation is provided.

[0008] The crossbeam is equipped with a downwardly extending pressure plate and a drive motor that drives the pressure plate to move vertically up and down. The pressure plates are symmetrically arranged on the left and right sides of the crossbeam and correspond to the position of the support plate. The pressure plates are vertically slidably connected to the crossbeam and are also connected to the drive motor for transmission.

[0009] Preferably, the front and rear sides of the crossbeam are provided with vertically penetrating grooves, the moving platform is inserted into the grooves and is slidably connected to the grooves, and the top of the moving platform is provided with an outwardly extending flange, the bottom of the flange abutting against the top of the crossbeam.

[0010] Preferably, the moving platform has a fixing part in the middle, the top of the fixing part abuts against the bottom of the crossbeam, the bottom of the fixing part abuts against the top of the clamping arm, and the fixing part has an elastic clamping plate on the side facing the precast beam, and the fixing part abuts against the precast beam through the elastic clamping plate.

[0011] Preferably, the crossbeam is provided with a reverse lead screw arranged in front and behind, and two moving platforms are respectively sleeved on both ends of the reverse lead screw and are connected to the reverse lead screw in a transmission manner. The reverse lead screw is rotatably connected to the crossbeam and is rotatably connected to a translation motor.

[0012] Preferably, the clamping arm is sleeved on the outside of the moving platform, and the inner side is provided with a vertically opened guide groove. The outside of the moving platform is provided with a guide block that is vertically slidably connected to the guide groove. The moving platform is provided with a vertically arranged lifting motor inside, and the lifting motor is connected to the clamping arm for lifting.

[0013] Preferably, the bracket has a downward-opening groove at the top, a boss that slides vertically to the groove at the bottom of the plate, an upward-opening cavity at the bottom of the boss, and springs evenly distributed in the cavity, with both ends abutting against the cavity and the groove respectively.

[0014] Preferably, the pressure plate is provided with an upwardly extending bushing, the bottom of the crossbeam is provided with a sleeve hole that is vertically slidably connected to the bushing, the drive motor is located at the top of the crossbeam, the output end of the drive motor passes through the crossbeam and is vertically connected to the bushing.

[0015] Preferably, the bridge suspension support is set relative to the left and right ends of the precast beam and connected by a traction rope. The traction rope is connected to an adjuster, which includes a drive wheel and a tension wheel that are rotatably set. The traction rope is set around the outside of the drive wheel and the tension wheel and is connected to the drive wheel for transmission. The drive wheel is coaxially connected to a winding motor.

[0016] This utility model has the following beneficial effects:

[0017] This invention utilizes pressure plates and support plates to hoist precast beams. First, the bridge suspension support is fitted onto the outside of the precast beam. Two moving platforms move towards the center of the crossbeam, adjusting their relative distance to align the clamping arms with both sides of the precast beam, thus limiting its forward and backward movement. Then, the clamping arms move upward relative to the moving platforms, adjusting the vertical height of the support to align the support plate with the bottom of the precast beam and the pressure plate with the top, thus limiting its vertical movement. Finally, under the action of the drive motor, the pressure plate moves downward relative to the crossbeam, applying vertical pressure to the precast beam. This causes the precast beam to press down on the support plate, compressing the spring assembly and applying a reverse spring force to the precast beam. This results in a higher degree of fit between the pressure plate, support plate, and precast beam, reducing the installation gap between the bridge suspension support and the precast beam. This prevents the precast beam from swaying or shifting during hoisting, improving the balance and stability of the hoisting process. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the bridge suspension support described in this utility model.

[0019] Figure 2 This is a schematic diagram of the assembly of the crossbeam described in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the crossbeam described in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the mobile platform described in this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the clamping arm described in this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the regulator described in this utility model.

[0024] Figure descriptions: 1. Precast beam; 2. Crossbeam; 3. Moving platform; 4. Clamping arm; 5. Bracket; 6. Support plate; 7. Spring assembly; 8. Pressure plate; 9. Drive motor; 10. Slide groove; 11. Flange; 12. Fixing part; 13. Reverse screw; 14. Guide groove; 15. Guide block; 16. Lifting motor; 17. Groove; 18. Boss; 19. Traction rope; 20. Adjuster; 21. Drive wheel; 22. Tensioning wheel; 23. Winding motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1 to 6 One embodiment provided by this utility model:

[0027] A bridge suspension support for hoisting a precast beam 1 includes a crossbeam 2 arranged in a front-to-back direction, a movable platform 3 symmetrically arranged on the front and back sides of the crossbeam 2, and a clamping arm 4 located below the movable platform 3. The movable platform 3 is slidably connected to the crossbeam 2 in the front and back direction, and the clamping arm 4 is slidably connected to the movable platform 3 in a vertical direction. The clamping arm 4 has an L-shaped structure and a bracket 5 extending towards the precast beam 1 at the bottom. A floating support plate 6 is embedded above the bracket 5. The support plate 6 is slidably connected to the bracket 5 in a vertical direction, and a vertically arranged spring assembly 7 connects the two. The crossbeam 2 has a downwardly extending pressure plate 8 and a drive motor 9 that drives the pressure plate 8 to rise and fall vertically. The pressure plate 8 is symmetrically arranged on the left and right sides of the crossbeam 2 and corresponds to the position of the support plate 6. The pressure plate 8 is slidably connected to the crossbeam 2 in a vertical direction and is connected to the drive motor 9 for transmission.

[0028] The precast beam 1 is a long strip structure, arranged along the left-right direction. A bridge suspension bracket is fitted onto the outside of the precast beam 1, corresponding to its left and right ends, for hoisting the precast beam 1. The crossbeam 2 is located above the precast beam 1, arranged horizontally along the front-back direction, and perpendicular to the precast beam 1. Moving platforms 3 are located on the front and back sides of the crossbeam 2, two platforms symmetrically arranged, fitted onto the outside of the crossbeam 2, and slidably connected to the crossbeam 2. Clamping arms 4 are located below the moving platforms 3, extending downwards from the moving platforms 3, and are vertically installed, slidably connected to the moving platforms 3.

[0029] The clamping arms 4 have an L-shaped structure. The clamping arms 4 located on the front and rear sides of the crossbeam 2 face each other and are both oriented towards the precast beam 1. The bracket 5 is located at the bottom of the clamping arms 4, extending towards the precast beam 1 and corresponding to the bottom position of the precast beam 1. The support plate 6 is located above the support plate 5, is floating, and is embedded in the top of the support plate 5, sliding vertically connected to the support plate 5. The spring assembly 7 is located between the support plate 6 and the support plate 5, is vertically arranged, and consists of several evenly distributed spring assemblies 7. The top of the spring assembly 7 is connected to the support plate 6, and the bottom of the spring assembly 7 is connected to the support plate 5.

[0030] The pressure plate 8 is located at the bottom of the crossbeam 2, extending downwards in a circular shape, relative to the top of the precast beam 1. The pressure plates 8 are symmetrically positioned on the left and right sides of the crossbeam 2, corresponding to and vertically aligned with the support plate 6, and are vertically slidably connected to the crossbeam 2. The drive motor 9 is located at the top of the crossbeam 2, vertically mounted, with its output shaft facing downwards and connected to the pressure plate 8, thereby driving the pressure plate 8 to rise and fall vertically.

[0031] This utility model, by setting up a pressure plate 8 and a support plate 6, allows for the following lifting methods for the precast beam 1: First, the bridge suspension bracket is fitted onto the outside of the precast beam 1. The two moving platforms 3 are moved towards the center of the crossbeam 2, and the relative distance between the moving platforms 3 is adjusted so that the clamping arms 4 are flush with both sides of the precast beam 1, limiting the front-to-back movement of the precast beam 1. Then, the clamping arms 4 move upward relative to the moving platforms 3, adjusting the vertical height of the support 5 so that the support plate 6 is flush with the bottom of the precast beam 1, and the pressure plate 8 is flush with the top of the precast beam 1, thus limiting the front-to-back movement of the precast beam 1. The vertical direction of the precast beam 1 is limited; finally, under the action of the drive motor 9, the pressure plate 8 moves downward relative to the crossbeam 2, applying vertical pressure to the precast beam 1, and then the precast beam 1 presses down on the support plate 6. The spring assembly 7 is compressed and contracts, and applies a reverse spring force to the precast beam 1, so that the pressure plate 8, the support plate 6 and the precast beam 1 fit more closely, reducing the installation gap between the bridge suspension support and the precast beam 1, avoiding the precast beam 1 from shaking or moving during hoisting, and improving the balance and stability of hoisting.

[0032] In this embodiment, preferably, the front and rear sides of the crossbeam 2 are provided with vertically penetrating grooves 10, the movable platform 3 is inserted into the grooves 10 and is slidably connected to the grooves 10, and the top of the movable platform 3 is provided with an outwardly extending flange 11, the bottom of the flange 11 abutting against the top of the crossbeam 2.

[0033] The slide 10 is located on both the front and rear sides of the crossbeam 2, and is vertically continuous, matching the shape of the movable platform 3. The movable platform 3 is located inside the slide 10, and is vertically inserted, slidingly connected to the slide 10. The flange 11 is located on the top of the movable platform 3, extending outwards in a ring shape, and is fitted onto the outside of the movable platform 3. The bottom of the flange 11 abuts against the top of the crossbeam 2, and the movable platform 3 is suspended from the crossbeam 2 through the flange 11, improving the stability of movement.

[0034] In this embodiment, preferably, the moving platform 3 is provided with a fixing part 12 in the middle. The top of the fixing part 12 abuts against the bottom of the crossbeam 2, and the bottom of the fixing part 12 abuts against the top of the clamping arm 4. The fixing part 12 is provided with an elastic clamping plate on the side facing the precast beam 1, and the fixing part 12 abuts against the precast beam 1 through the elastic clamping plate.

[0035] The fixing part 12 is located in the middle of the moving platform 3, and has a ring-shaped structure, sleeved on the outside of the moving platform 3. The top of the fixing part 12 abuts against the bottom of the crossbeam 2, and the crossbeam 2 is located between the fixing part 12 and the flange part 11, providing vertical limit for the moving platform 3. The clamping arm 4 is vertically slidably connected to the moving platform 3. When the clamping arm 4 rises to its maximum stroke, the bottom of the fixing part 12 abuts against the top of the clamping arm 4, providing stroke limit for the clamping arm 4. The elastic clamping plate is located inside the fixing part 12, facing the precast beam 1, and has an elastic function, which can be achieved by a return spring, elastic rubber, or other structures. When the two moving platforms 3 move towards the center of the crossbeam 2, the clamping arm 4 is flush with both sides of the precast beam 1, and the elastic clamping plate abuts against the precast beam 1, improving clamping stability.

[0036] In this embodiment, preferably, the crossbeam 2 is provided with a reverse lead screw 13 arranged in front and behind. Two moving platforms 3 are respectively sleeved on both ends of the reverse lead screw 13 and are connected to the reverse lead screw 13 in a transmission manner. The reverse lead screw 13 is rotatably connected to the crossbeam 2 and is rotatably connected to a translation motor.

[0037] The reverse lead screw 13 is located inside the crossbeam 2, arranged along the front-to-back direction, and rotatably connected to the crossbeam 2. The threads at both ends of the reverse lead screw 13 are in opposite directions and are respectively sleeved onto the moving platform 3. The moving platform 3 has threads corresponding to the reverse lead screw 13 inside, and the moving platform 3 is drively connected to the reverse lead screw 13. The translation motor is located on one side of the crossbeam 2, adopting a rotary motor structure, and is arranged corresponding to the middle of the lead screw, rotatably connected to the reverse lead screw 13. Under the action of the translation motor, the reverse lead screw 13 rotates, driving the moving platform 3 to move. The two moving platforms 3 approach each other along the direction of the reverse lead screw 13 until their corresponding clamping arms 4 are flush with both sides of the precast beam 1.

[0038] In this embodiment, preferably, the clamping arm 4 is sleeved on the outside of the moving platform 3, and the inner side is provided with a vertically opened guide groove 14. The outer side of the moving platform 3 is provided with a guide block 15 that is vertically slidably connected to the guide groove 14. The moving platform 3 is provided with a vertically arranged lifting motor 16 inside, and the lifting motor 16 is connected to the clamping arm 4 for lifting.

[0039] The clamping arm 4 is located at the bottom of the moving platform 3, sleeved on the outside of the moving platform 3, and slidably connected to the moving platform 3 vertically. The guide groove 14 is located inside the clamping arm 4, and can be set on the left and right sides of the guide groove 14, and is opened in the vertical direction. The guide block 15 is located outside the moving platform 3, matching the shape and position of the guide groove 14. The guide block 15 is embedded in the guide groove 14 and slidably connected to the guide groove 14 vertically, improving sliding stability and also serving as a stroke limiter. The lifting motor 16 is located inside the moving platform 3, adopting a telescopic motor structure, and is set to extend vertically downward. The output end of the lifting motor 16 is connected to the clamping arm 4 for lifting. Under the action of the lifting motor 16, the clamping arm 4 moves upward until its corresponding support plate 6 is flush with the bottom of the precast beam 1.

[0040] In this embodiment, preferably, the top of the bracket 5 is provided with a downwardly opening groove 17, the bottom of the plate 6 is provided with a boss 18 that is vertically slidably connected to the groove 17, the bottom of the boss 18 is provided with an upwardly opening cavity, and the spring assembly 7 is evenly distributed in the cavity, with both ends abutting against the cavity and the groove 17 respectively.

[0041] A groove 17 is located at the top of the bracket 5, extending downwards from the top of the bracket 5. A boss 18 is located at the bottom of the support plate 6, extending downwards from the bottom of the support plate 6. The boss 18 matches the shape and position of the groove 17, and is embedded in the groove 17, sliding perpendicularly to the groove 17. A cavity is located at the bottom of the boss 18, extending upwards from the bottom of the boss 18. Evenly distributed spring sets 7 are placed inside. The top of the spring sets 7 abuts against the cavity, and the bottom of the spring sets 7 abuts against the groove 17. Under normal conditions, the spring sets 7 push the support plate 6 upwards, and the support plate 6 is floating. When the precast beam 1 presses down on the support plate 6, the support plate 6 moves downwards, reducing the relative distance between the support plate 6 and the bracket 5. This causes the spring sets 7 to contract under pressure, applying an upward force to the precast beam 1, causing the support plate 6 to conform to the bottom of the precast beam 1.

[0042] In this embodiment, preferably, the pressure plate 8 is provided with an upwardly extending bushing, the bottom of the crossbeam 2 is provided with a sleeve hole that is vertically slidably connected to the bushing, the drive motor 9 is located at the top of the crossbeam 2, the output end of the drive motor 9 passes through the crossbeam 2 and is vertically connected to the bushing.

[0043] The bushing is located above the pressure plate 8, extending upwards and coaxially aligned with it. A sleeve hole is located at the bottom of the crossbeam 2, opening upwards from the bottom of the crossbeam 2. The bushing is inserted into the sleeve hole and slidably connected perpendicularly to it. The drive motor 9 is located at the top of the crossbeam 2, employing a telescopic motor structure, extending vertically downwards and axially aligned with the bushing. The output end of the drive motor 9 passes through the crossbeam 2 and is vertically connected to the bushing. Under the action of the drive motor 9, the pressure plate 8 moves downwards, applying downward pressure to the precast beam 1. The pressure plate 8 makes full contact with the precast beam 1, ensuring it adheres to the top of the precast beam 1.

[0044] In this embodiment, preferably, the bridge suspension support is set at the left and right ends of the precast beam 1 and connected by a traction rope 19. The traction rope 19 is connected to an adjuster 20. The adjuster 20 includes a drive wheel 21 and a tensioning wheel 22 that are rotatably set. The traction rope 19 is set around the outside of the drive wheel 21 and the tensioning wheel 22 and is connected to the drive wheel 21 for transmission. The drive wheel 21 is coaxially connected to a winding motor 23.

[0045] Two sets of bridge suspension supports are located symmetrically at the left and right ends of the precast beam 1 and connected by a traction rope 19. An adjuster 20 is located between the two sets of bridge suspension supports, and can be positioned relative to the center of the traction rope 19. The traction rope 19 passes through the adjuster 20 and is connected to it. Two tensioning wheels 22 are symmetrically arranged. The drive wheel 21, the first tensioning wheel 22, and the second tensioning wheel 22 are all located inside the adjuster 20 and are vertically rotating. The first tensioning wheel 22 and the second tensioning wheel 22 are located on either side of the drive wheel 21. The traction rope 19 enters from one end of the adjuster 20, sequentially wraps around the outside of the first tensioning wheel 22, the drive wheel 21, and the second tensioning wheel 22, and exits from the other end of the adjuster 20, thus clamping the traction rope 19 between the tensioning wheel 22 and the drive wheel 21. The winding motor 23 is coaxially connected to the drive wheel 21 and adopts a rotary motor structure. Under the action of the winding motor 23, the drive wheel 21 rotates vertically and is connected to the traction rope 19, causing the traction rope 19 to move relative to the outside of the drive wheel 21, thereby adjusting the extension length of both ends of the traction rope 19. When hoisting the precast beam 1, when the extension lengths at both ends are equal, the connection lengths of the traction rope 19 and the two sets of bridge suspension supports are equal, and the precast beam 1 is in a horizontal suspended state; when the extension lengths at both ends are unequal, the connection lengths of the traction rope 19 and the two sets of bridge suspension supports are unequal, and the precast beam 1 is in an inclined suspended state, thus adapting to different hoisting scenarios.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 bridge suspension support for hoisting precast beams, comprising a crossbeam arranged along a front-to-back direction, movable platforms symmetrically arranged on the front and back sides of the crossbeam, and clamping arms disposed below the movable platforms, wherein the movable platforms are slidably connected to the crossbeam in a front-to-back manner, and the clamping arms are slidably connected to the movable platforms perpendicularly, characterized in that: The clamping arm has an L-shaped structure and a bracket extending towards the precast beam at the bottom. A floating support plate is embedded above the support plate. The support plate and the support plate are vertically slidably connected, and a vertically arranged spring assembly is connected between the two. The crossbeam is equipped with a downwardly extending pressure plate and a drive motor that drives the pressure plate to move vertically up and down. The pressure plates are symmetrically arranged on the left and right sides of the crossbeam and correspond to the position of the support plate. The pressure plates are vertically slidably connected to the crossbeam and are also connected to the drive motor for transmission.

2. The bridge suspension support according to claim 1, characterized in that: The crossbeam has vertically penetrating grooves on both the front and rear sides. The moving platform is inserted into the grooves and is slidably connected to the grooves. The top of the moving platform has an outwardly extending flange, and the bottom of the flange abuts against the top of the crossbeam.

3. The bridge suspension support according to claim 2, characterized in that: The moving platform has a fixing part in the middle. The top of the fixing part abuts against the bottom of the crossbeam, and the bottom of the fixing part abuts against the top of the clamping arm. The fixing part has an elastic clamping plate on the side facing the precast beam, and the fixing part abuts against the precast beam through the elastic clamping plate.

4. The bridge suspension support according to claim 3, characterized in that: The crossbeam is equipped with a reverse lead screw arranged in front and behind. Two moving platforms are respectively sleeved on both ends of the reverse lead screw and are connected to the reverse lead screw in a transmission manner. The reverse lead screw is rotatably connected to the crossbeam and is rotatably connected to a translation motor.

5. The bridge suspension support according to claim 1, characterized in that: The clamping arm is sleeved on the outside of the moving platform, and a vertically opened guide groove is provided on the inside. A guide block is provided on the outside of the moving platform and is vertically slidably connected to the guide groove. A vertically arranged lifting motor is provided inside the moving platform, and the lifting motor is connected to the clamping arm for lifting.

6. The bridge suspension support according to claim 5, characterized in that: The bracket has a downward-facing groove at the top, and a boss that slides vertically to the groove at the bottom of the plate. The boss has an upward-facing cavity at the bottom, and springs are evenly distributed in the cavity, with their two ends abutting against the cavity and the groove, respectively.

7. A bridge suspension support according to claim 6, characterized in that: The pressure plate is provided with an upwardly extending bushing, and the bottom of the crossbeam is provided with a sleeve hole that is vertically slidably connected to the bushing. The drive motor is located at the top of the crossbeam, and the output end of the drive motor passes through the crossbeam and is connected to the bushing for lifting.

8. The bridge suspension support according to claim 1, characterized in that: The bridge suspension support is set relative to the left and right ends of the precast beam and is connected by a traction rope. The traction rope is connected to an adjuster, which includes a drive wheel and a tension wheel that are rotatably set. The traction rope is set around the outside of the drive wheel and the tension wheel and is connected to the drive wheel for transmission. The drive wheel is coaxially connected to a winding motor.

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