Steel structure bridge lifting device

Abstract

The utility model relates to the technical field of steel structure bridge construction, and discloses a steel structure bridge lifting device which comprises a plurality of unit balance carriers, each unit balance carrier comprises a steering box and a lifting plate, a first transmission plate and a second transmission plate are rotationally installed on the surface of each steering box respectively, and the first transmission plates and the second transmission plates are arranged in parallel. The ends, away from the steering box, of the first transmission plate and the second transmission plate are rotationally connected with the lifting plate, a hydraulic oil cylinder is rotationally installed on the upper side of the steering box, the telescopic end of the hydraulic oil cylinder is rotationally connected with the first transmission plate, and traveling wheels are rotationally installed at the bottom end of the steering box. According to the lifting device, a plurality of unit balance carriers are arranged, the unit balance carriers are installed on the periphery of the unit bridge section, the traveling wheels touch the ground, the lifting plate is jacked up through extension of the hydraulic oil cylinder, and each unit balance carrier can independently control the lifting height and lift the unit bridge section so that the effect of pushing the unit bridge section to move can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure bridge construction, in particular to a steel structure bridge lifting device. Background Art

[0002] Steel structure bridges are mostly divided into multiple bridge sections and welded separately, and then assembled by hoisting. The prior art has a notice number of CN212956135U, which discloses an adjustable lifting device for assembling super-large steel structure bridge segments, including two correspondingly arranged support assemblies, the support assembly includes four columns distributed in a rectangular shape, an upper connecting column is arranged between the upper ends of two adjacent columns, a lower connecting column is arranged between the lower sides of two adjacent columns, two inclined columns are arranged between the corresponding upper connecting column and the lower connecting column, and a triangular structure is formed between the two inclined columns and the corresponding lower connecting column, and a lifting group is respectively arranged between the two columns located on the front side and between the two columns located on the rear side, and a support beam is arranged at the upper end of the lifting group, and the support beams of the two support assemblies are arranged in sequence, and the end faces of the corresponding two support beams are in contact with each other and fixedly connected by a connecting piece, and a sensor is arranged on the side end face of the support beam. The utility model has the following advantages: the height can be adjusted with high precision, and the support stability and structural strength are ensured.

[0003] In the actual construction process, after the welding of the on-site unit bridge section is completed, it needs to be transported from the production site to the lifting site through a lifting device. However, the existing lifting device cannot realize the functions of transportation and movement, which brings inconvenience to use and needs further improvement. Utility Model Content

[0004] The purpose of the utility model is to provide a steel structure bridge lifting device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel structure bridge lifting device, comprising a plurality of unit balancing carriers, the unit balancing carriers comprising a steering box and a lifting plate, the surface of the steering box is rotatably mounted with a first transmission plate and a second transmission plate, the first transmission plate and the second transmission plate are arranged in parallel, and the ends of the first transmission plate and the second transmission plate away from the steering box are both rotatably connected to the lifting plate, a hydraulic cylinder is rotatably mounted on the upper side of the steering box, and the telescopic end of the hydraulic cylinder is rotatably connected to the first transmission plate.

[0006] A rotating chassis is rotatably installed at the bottom end of the steering box, and traveling wheels are rotatably installed on the lower surface of the rotating chassis. An angle driving mechanism is arranged inside the steering box, and the rotating chassis is driven to rotate a certain angle through the angle driving mechanism, thereby changing the traveling direction of the traveling wheels. Multiple unit balancing carriers are installed around the unit bridge section, and the traveling wheels are on the ground to realize the functions of lifting and transporting.

[0007] In some embodiments, the angle drive mechanism includes a rotating shaft, a servo motor, a worm gear and a transmission worm, wherein the rotating shaft is rotatably installed inside the steering box, the rotating chassis is fixedly installed at the bottom end of the rotating shaft, the worm gear is fixedly installed at the top end of the rotating shaft, the transmission worm is laterally rotatably installed inside the steering box, the servo motor is fixedly installed inside the steering box, and the servo motor drives the transmission worm to rotate, and the transmission worm and the worm gear are meshed for transmission, wherein an end face bearing is fixedly installed inside the steering box, and the steering box is rotatably connected to the rotating chassis through the end face bearing, and the rolling direction of the traveling wheel can be adjusted by the servo motor.

[0008] In some embodiments, an angle sensor is fixedly mounted on the top wall of the steering box, and the angle sensor detects the rotation angle of the central axis of the worm gear, thereby monitoring the direction of the traveling wheel.

[0009] In some embodiments, a lifting seat is slidably installed on the surface of the lifting plate, auxiliary wheels are rotatably installed on the front and rear sides of the lifting seat, a travel motor for driving the auxiliary wheels to rotate is arranged inside the lifting seat, a guide rod is fixedly installed on the upper surface of the lifting seat, a connecting sleeve is fixedly installed on the surface of the lifting plate, the guide rod is slidably connected to the connecting sleeve, a telescopic cylinder is fixedly installed on the surface of the lifting plate, the telescopic end of the telescopic cylinder is fixedly connected to the lifting seat, so that the auxiliary wheels can move down or up, and the auxiliary wheels and the traveling wheels are used to roll on the ground, so as to facilitate the independent walking of the unit balancing vehicle.

[0010] In some embodiments, there are four unit balancing carriers, which are respectively arranged on both sides of the unit bridge section and fixedly connected to the unit bridge section through a lifting plate. Each unit balancing carrier can independently control the lifting height so as to control the posture of the unit bridge section.

[0011] Beneficial Effects

[0012] The utility model provides a steel structure bridge lifting device, which has the following beneficial effects:

[0013] 1. The lifting device is provided with a plurality of unit balancing carriers, which are installed around the unit bridge section. The driving wheels are on the ground, and the lifting plate is lifted up by the extension of the hydraulic cylinder. Each unit balancing carrier can independently control the lifting height to lift the unit bridge section so as to achieve the effect of promoting its movement, thereby solving the problem that the steel structure bridge is heavy and bulky after it is built and is difficult to transport and move.

[0014] 2. The lifting device has auxiliary wheels on the side of the lifting plate. When the auxiliary wheels and the traveling wheels are on the ground, the unit balancing vehicle can be moved independently, which facilitates the assembly of the lifting plate and the unit bridge section. When the unit bridge section is lifted, the lifting seat is lifted by the telescopic cylinder so that the auxiliary wheels are suspended in the air, which facilitates the movement of the traveling wheels. By setting an angle driving mechanism in the steering box, the angle of the traveling wheels can be adjusted to change its moving direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the unit balance carrier;

[0016] Figure 2 It is a schematic diagram of the front section structure of the unit balance carrier;

[0017] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0018] Figure 4 It is a three-dimensional schematic diagram of the lifting unit bridge section.

[0019] In the figure: 1 steering box, 2 lifting plate, 3 first transmission plate, 4 second transmission plate, 5 hydraulic cylinder, 6 rotating chassis, 7 traveling wheel, 8 rotating shaft, 9 servo motor, 10 worm wheel, 11 driving worm, 12 end bearing, 13 angle sensor, 14 lifting seat, 15 auxiliary wheel, 16 guide rod, 17 connecting sleeve, 18 telescopic cylinder, 19 unit bridge section. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4The utility model provides a technical solution: a steel structure bridge lifting device, including multiple unit balancing carriers, the unit balancing carrier includes a steering box 1 and a lifting plate 2, the surface of the steering box 1 is rotatably mounted with a first transmission plate 3 and a second transmission plate 4, the first transmission plate 3 and the second transmission plate 4 are arranged in parallel, and the first transmission plate 3 and the second transmission plate 4 are rotatably connected to the lifting plate 2 at one end away from the steering box 1, a hydraulic cylinder 5 is rotatably mounted on the upper side of the steering box 1, the telescopic end of the hydraulic cylinder 5 is rotatably connected to the first transmission plate 3, the first transmission plate 3 and the second transmission plate 4 are the same length, and the rotational connection at both ends thereof constitutes four rotation nodes of a parallelogram, and when the hydraulic cylinder 5 is extended and retracted, the lifting plate 2 and the steering box 1 are kept in a parallel state and moved up or down.

[0022] A rotating chassis 6 is rotatably mounted on the bottom end of the steering box 1 , and a traveling wheel 7 is rotatably mounted on the lower surface of the rotating chassis 6 . An end bearing 12 is fixedly mounted inside the steering box 1 , and the steering box 1 is rotatably connected to the rotating chassis 6 via the end bearing 12 .

[0023] The steering box 1 is provided with an angle driving mechanism inside, which drives the rotating chassis 6 to rotate a certain angle, thereby changing the driving direction of the driving wheel 7. Specifically, Figure 3 As shown, the angle driving mechanism includes a rotating shaft 8, a servo motor 9, a worm gear 10 and a transmission worm 11. The rotating shaft 8 is rotatably installed inside the steering box 1, the rotating chassis 6 is fixedly installed on the bottom end of the rotating shaft 8, the worm gear 10 is fixedly installed on the top end of the rotating shaft 8, and an angle sensor 13 is fixedly installed on the top wall of the steering box 1. The angle sensor 13 detects the rotation angle of the central axis of the worm gear 10, thereby monitoring the driving direction of the driving wheel 7.

[0024] The transmission worm 11 is installed in the steering box 1 for transverse rotation, and the servo motor 9 is fixedly installed in the steering box 1, and the servo motor 9 drives the transmission worm 11 to rotate, and the transmission worm 11 and the worm wheel 10 are meshed for transmission. Since the meshing transmission of the transmission worm 11 and the worm wheel 10 has the characteristics of one-way transmission, that is, self-locking characteristics, the driving wheel 7 maintains a fixed angle.

[0025] A lifting seat 14 is slidably mounted on the surface of the lifting plate 2 , and auxiliary wheels 15 are rotatably mounted on both the front and rear sides of the lifting seat 14 . A travel motor for driving the auxiliary wheels 15 to rotate is arranged inside the lifting seat 14 .

[0026] A guide rod 16 is fixedly installed on the upper surface of the lifting seat 14, a connecting sleeve 17 is fixedly installed on the surface of the lifting plate 2, the guide rod 16 and the connecting sleeve 17 are slidably connected, a telescopic cylinder 18 is fixedly installed on the surface of the lifting plate 2, and the telescopic end of the telescopic cylinder 18 is fixedly connected to the lifting seat 14. The telescopic cylinder 18 is extended to make the auxiliary wheel 15 move down and land on the ground. When the telescopic cylinder 18 is shortened, the auxiliary wheel 15 is lifted and kept suspended. Auxiliary wheels 15 are set on the side of the lifting plate 2. When the auxiliary wheels 15 and the traveling wheels 7 are on the ground, it is convenient for the unit balancing vehicle to move independently, which provides convenience for the assembly of the lifting plate 2 and the unit bridge section 19.

[0027] In this embodiment, Figure 4 As shown, there are four unit balancing carriers, which are respectively arranged on both sides of the unit bridge section 19 and fixedly connected to the unit bridge section 19 through the lifting plate 2. When using the unit bridge section 19, the telescopic cylinder 18 is used to lift the lifting seat 14 so that the auxiliary wheel 15 is suspended in the air, which is convenient for moving the driving wheel 7. By setting an angle driving mechanism in the steering box 1, the angle of the driving wheel 7 can be adjusted to change its moving direction.

[0028] The lifting device is configured with a plurality of unit balancing carriers, which are installed around the unit bridge section 19. The driving wheels 7 are on the ground, and the lifting plate 2 is lifted up by extending the hydraulic cylinder 5. Each unit balancing carrier can independently control the lifting height to lift the unit bridge section 19 so as to achieve the effect of pushing or pulling it to move, thereby solving the problem that after the steel structure bridge is built, it is heavy and bulky and difficult to transport and move.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel structure bridge lifting device, comprising a plurality of unit balancing carriers, characterized in that: The unit balancing vehicle comprises a steering box (1) and a lifting plate (2); a first transmission plate (3) and a second transmission plate (4) are rotatably mounted on the surface of the steering box (1); the first transmission plate (3) and the second transmission plate (4) are arranged in parallel, and one end of the first transmission plate (3) and the second transmission plate (4) away from the steering box (1) are both rotatably connected to the lifting plate (2); a hydraulic cylinder (5) is rotatably mounted on the upper side of the steering box (1); and the telescopic end of the hydraulic cylinder (5) is rotatably connected to the first transmission plate (3); A rotating chassis (6) is rotatably mounted on the bottom end of the steering box (1), and a traveling wheel (7) is rotatably mounted on the lower surface of the rotating chassis (6). An angle driving mechanism is arranged inside the steering box (1), and the rotating chassis (6) is driven by the angle driving mechanism to rotate a certain angle, thereby changing the traveling direction of the traveling wheel (7).

2. A steel structure bridge lifting device according to claim 1, characterized in that: The angle driving mechanism comprises a rotating shaft (8), a servo motor (9), a worm wheel (10) and a transmission worm (11); the rotating shaft (8) is rotatably mounted inside the steering box (1); the rotating chassis (6) is fixedly mounted on the bottom end of the rotating shaft (8); and the worm wheel (10) is fixedly mounted on the top end of the rotating shaft (8).

3. A steel structure bridge lifting device according to claim 2, characterized in that: The transmission worm (11) is installed in a transversely rotatable manner inside the steering box (1), and the servo motor (9) is fixedly installed inside the steering box (1). The servo motor (9) drives the transmission worm (11) to rotate, and the transmission worm (11) and the worm wheel (10) are meshed for transmission.

4. A steel structure bridge lifting device according to claim 3, characterized in that: An end bearing (12) is fixedly installed inside the steering box (1), and the steering box (1) is rotatably connected to the rotating chassis (6) via the end bearing (12).

5. A steel structure bridge lifting device according to claim 4, characterized in that: An angle sensor (13) is fixedly mounted on the top wall of the steering box (1), and the angle sensor (13) detects the rotation angle of the central axis of the worm wheel (10).

6. A steel structure bridge lifting device according to claim 5, characterized in that: A lifting seat (14) is slidably mounted on the surface of the lifting plate (2), auxiliary wheels (15) are rotatably mounted on both the front and rear sides of the lifting seat (14), and a travel motor for driving the auxiliary wheels (15) to rotate is arranged inside the lifting seat (14).

7. A steel structure bridge lifting device according to claim 6, characterized in that: A guide rod (16) is fixedly mounted on the upper surface of the lifting seat (14), a connecting sleeve (17) is fixedly mounted on the surface of the lifting plate (2), the guide rod (16) and the connecting sleeve (17) are slidably connected, a telescopic oil cylinder (18) is fixedly mounted on the surface of the lifting plate (2), and the telescopic end of the telescopic oil cylinder (18) is fixedly connected to the lifting seat (14).

8. A steel structure bridge lifting device according to any one of claims 1 to 7, characterized in that: There are four unit balancing carriers, which are respectively arranged on both sides of the unit bridge section (19) and fixedly connected to the unit bridge section (19) via a lifting plate (2).

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