Integral hoisting device for beam transporting vehicle

Abstract

The utility model discloses an integral hoisting device of a beam transporting vehicle, which relates to the technical field of integral hoisting of beam transporting vehicles and particularly comprises a main body U-shaped hoisting frame, a second motor is fixedly connected to the top end of one side of the U-shaped hoisting frame, one end of an output shaft of the second motor penetrates through the U-shaped hoisting frame and is fixedly connected with a screw rod, and the screw rod is a two-way screw rod. The surface of the screw rod is in threaded connection with a screw block, in the lifting process, through cooperation of a first motor and a steel wire rope, extrusion of a protruding block and cooperation of a fixing plate and a spring, a limiting column can slide close to the inner wall of a circular ring, and when the first motor is suddenly damaged, due to the gravity effect, the beam transporting vehicle can be driven by the limiting column to slide. Due to the fact that the centrifugal force of the limiting column is increased due to the fact that the rotating shaft rotates rapidly, the limiting groove is matched with the limiting column, the circular ring is fixed, the rotating shaft can be clamped to stop rotating, continuous falling of the girder transporting vehicle body is stopped, and the girder transporting vehicle body can be protected against damage.

Description

Technical Field

[0001] This utility model relates to the field of overall hoisting technology for beam transport vehicles, specifically to an overall hoisting device for beam transport vehicles. Background Technology

[0002] The high-speed rail heavy-duty beam transport vehicle is a specialized vehicle used to transport precast reinforced concrete beams from the prefabrication plant or bridge site to the bridge erecting machine. It is typically wheeled and mainly consists of dozens of drive and driven wheels, a frame, a driver's cab, a control system, and auxiliary devices. It is an auxiliary equipment for bridge erecting machine construction. Due to its heavy weight and long length, during construction, depending on the requirements, sometimes the entire beam transport vehicle needs to be lifted onto the bridge deck before beam transport can proceed.

[0003] When hoisting the beam transport vehicle as a whole, two hoisting seats that are fixedly connected by a connecting beam are generally used to hoist the two sides of the beam transport vehicle. The size of the connecting beam is generally fixed. However, when using hoisting equipment, it is often necessary to hoist beam transport vehicles of different sizes. This requires removing the connecting beam from the hoisting seat and replacing it with a connecting beam of different sizes, which is quite troublesome.

[0004] Chinese utility model patent CN22046727U discloses an overall lifting device for a beam transport vehicle. Although this overall lifting device can be adapted to beam transport vehicles of different widths by rotating a handwheel and using movable plates, manual operation not only causes trouble for operators but also reduces the overall lifting efficiency. Furthermore, the lack of a fall protection device means that if the motor suddenly fails, the beam transport vehicle will fall rapidly due to gravity, which will not only damage the beam transport vehicle but also threaten the construction safety of ground operators. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an overall lifting device for beam transport vehicles, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a main U-shaped hanger, a second motor is fixedly connected to the top of one side of the U-shaped hanger, one end of the output shaft of the second motor passes through the U-shaped hanger and is fixedly connected to a screw, the screw is a bidirectional screw, a screw block is threadedly connected to the surface of the screw, and a connecting post is fixedly connected to the bottom end of the screw block.

[0009] Optionally, the bottom end of the connecting column passes through the U-shaped hanger and is fixedly connected to a platform. A first motor is fixedly connected to the middle of the front surface of the platform. One end of the output shaft of the first motor passes through the platform and is fixedly connected to a rotating shaft. A roller is fixedly connected to the surface of the rotating shaft.

[0010] Optionally, a steel wire rope is fixedly connected to the surface of the roller. There are multiple steel wire ropes, which are linearly distributed. One end of each steel wire rope passes through the lifting platform and is fixedly connected to a hook.

[0011] Optionally, the bottom end of the U-shaped hanger is provided with a beam transport vehicle body, and the top two sides of the beam transport vehicle body are fixedly connected with connecting plates. There are multiple connecting plates, which are linearly distributed. One side of each connecting plate has a through hole, and one side of the through hole extends through the connecting plate. The hook is in contact with the through hole.

[0012] Optionally, the inner end of the rotating shaft is provided with mounting grooves on both sides. The mounting grooves are U-shaped grooves. A protrusion is fixedly connected to the bottom end of the mounting groove. A limit post is slidably connected to the surface of the mounting groove. The protrusion is in contact with the limit post.

[0013] Optionally, a pressure plate is fixedly connected to the surface of the limiting post, a spring is sleeved on the surface of the limiting post, and a spring is provided between the pressure plate and the mounting groove.

[0014] Optionally, one end of the surface of the rotating shaft is provided with a ring, the ring is fixedly connected to the lifting platform, one end of the limiting post passes through the rotating shaft and contacts the inner surface of the ring, and the inner two ends of the ring are provided with limiting grooves, and the limiting post is slidably connected to the limiting grooves.

[0015] This utility model provides an overall hoisting device for a beam transport vehicle, which has the following beneficial effects:

[0016] 1. The overall lifting device for the beam transport vehicle, when it is necessary to lift the main body of the beam transport vehicle, welds the connecting plates to both sides of the main body of the beam transport vehicle. Through the cooperation of screws and screw blocks, the lifting platform can be moved to the left or right to adapt to the size of beam transport vehicle main bodies of different widths. It ensures that the connecting plates on both sides of the lifting platform and the beam transport vehicle main body remain vertical, and avoids the lifting platform and the beam transport vehicle main body from shifting, which would affect the stability during lifting. Through the cooperation of the rotating shaft and roller, the cooperation of the hook and through hole, and the cooperation of the first motor and the wire rope, the main body of the beam transport vehicle can be lifted, avoiding manual operation to change the lifting position and improving the lifting efficiency of the main body of the beam transport vehicle.

[0017] 2. The overall lifting device of this beam transport vehicle, during the lifting process, through the cooperation of the first motor and the wire rope, and the squeezing of the protrusion, and the cooperation of the fixed plate and the spring, allows the limiting post to slide against the inner wall of the ring. When the first motor suddenly fails, the beam transport vehicle body, due to gravity, and the rapid rotation of the shaft, increases the centrifugal force of the limiting post. Through the cooperation of the limiting groove and the limiting post, and the fact that the ring is fixed, the shaft can be jammed and stopped from rotating, thus stopping the beam transport vehicle body from falling further and protecting the beam transport vehicle body from damage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 This is a schematic diagram of the main sectional view of the structure of this utility model;

[0020] Figure 3 This is a bottom view of the structure of this utility model;

[0021] Figure 4 This is a rear view schematic diagram of the structure of this utility model;

[0022] Figure 5 This is a rear sectional view of the structure of this utility model;

[0023] Figure 6 The structure of this utility model Figure 5 Enlarged diagram of point A in the middle

[0024] In the diagram: 1. Main body of the beam transport vehicle; 2. U-shaped gantry; 3. Steel wire rope; 4. First motor; 5. Connecting column; 6. Lifting platform; 7. Second motor; 8. Hook; 9. Connecting plate; 10. Rotating shaft; 11. Screw; 12. Screw block; 13. Roller; 14. Ring; 15. Limiting column; 16. Spring; 17. Pressure plate; 18. Protrusion; 19. Mounting groove; 20. Limiting groove. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example

[0027] Please see Figures 1 to 2The present invention provides a technical solution including a main body U-shaped hanger 2, a second motor 7 fixedly connected to the top of one side of the U-shaped hanger 2, one end of the output shaft of the second motor 7 passing through the U-shaped hanger 2 and fixedly connected to a screw 11, the screw 11 being a bidirectional screw, a screw block 12 being threadedly connected to the surface of the screw 11, a connecting post 5 being fixedly connected to the bottom end of the screw block 12, and the bottom end of the connecting post 5 passing through the U-shaped hanger 2 and fixedly connected to a hanging platform 6.

[0028] Specifically, closing the switch of the second motor 7, through the cooperation of the screw 11 and the screw block 12, and the screw 11 being a bidirectional screw, and through the cooperation of the connecting column 5, can drive the lifting platform 6 to move left or right, so as to adapt to the size of the beam transport vehicle body 1 of different widths, ensuring that the lifting platform 6 and the beam transport vehicle body 1 remain vertical on both sides, and avoiding the lifting platform 6 and the beam transport vehicle body 1 from shifting, which would affect the stability during lifting.

[0029] Please see Figures 2 to 4 A first motor 4 is fixedly connected to the middle of the front surface of the lifting platform 6. One end of the output shaft of the first motor 4 passes through the lifting platform 6 and is fixedly connected to a rotating shaft 10. A roller 13 is fixedly connected to the surface of the rotating shaft 10. A steel wire rope 3 is fixedly connected to the surface of the roller 13. There are multiple steel wire ropes 3, which are linearly distributed. One end of the steel wire rope 3 passes through the lifting platform 6 and is fixedly connected to a hook 8. The bottom end of the U-shaped lifting frame 2 is provided with a beam transport vehicle body 1. The top two sides of the beam transport vehicle body 1 are fixedly connected to connecting plates 9. There are multiple connecting plates 9, which are linearly distributed. One side of the connecting plate 9 has a through hole, and one side of the through hole passes through the connecting plate 9. The hook 8 is in contact with the through hole.

[0030] Specifically, when it is necessary to lift the main body 1 of the beam transport vehicle, the connecting plates 9 are welded to both sides of the main body 1 of the beam transport vehicle. The switch of the first motor 4 is closed, and the steel wire rope 3 is driven to move downward through the cooperation of the rotating shaft 10 and the roller 13, so that the hook 8 hooks the through hole of the connecting plate 9. Through the cooperation of the first motor 4 and the steel wire rope 3, the main body 1 of the beam transport vehicle can be lifted. The setting of multiple sets of steel wire ropes 3 can reduce the lifting weight and ensure the stability during lifting.

[0031] Please see Figures 5 to 6The rotating shaft 10 has mounting grooves 19 on both sides of one end. The mounting grooves 19 are U-shaped grooves. A protrusion 18 is fixedly connected to the bottom end of the mounting groove 19. A limit post 15 is slidably connected to the surface of the mounting groove 19. The protrusion 18 contacts the limit post 15. The protrusion 18 slides in contact with the limit post 15 through the inclined surface. A pressure plate 17 is fixedly connected to the surface of the limit post 15. A spring 16 is sleeved on the surface of the limit post 15. A spring 16 is provided between the pressure plate 17 and the mounting groove 19. A ring 14 is provided at one end of the surface of the rotating shaft 10. The ring 14 is fixedly connected to the hanging platform 6. One end of the limit post 15 passes through the rotating shaft 10 and contacts the inner surface of the ring 14.

[0032] Specifically, during the lifting process, the first motor 4 and the wire rope 3 work together to drive the rotating shaft 10 to rotate at a constant speed. Through the squeezing of the protrusion 18, the pressure plate 17 and the spring 16 work together, and due to the centrifugal force of the rotating shaft 10 rotating at a constant speed, the limiting post 15 can slide against the inner wall of the ring 14.

[0033] Please see Figures 5 to 6 Limiting grooves 20 are provided at both ends of the inner side of the ring 14. The limiting post 15 is slidably connected to the limiting groove 20. The stiffness of the spring 16 is 50-100 N / mm, which ensures that the limiting post (15) can be quickly compressed and locked into the limiting groove 20 when the centrifugal force increases. When the rotation speed of the shaft 10 exceeds 30 rpm, the centrifugal force of the limiting post 15 is sufficient to overcome the preload of the spring 16 and trigger the locking action.

[0034] Specifically, when the first motor 4 suddenly fails, the main body 1 of the beam transport vehicle can drive the rotating shaft 10 to rotate rapidly due to gravity. The rapid rotation of the rotating shaft 10 increases the centrifugal force of its limiting post 15. As the spring 16 is compressed, the limiting post 15 moves into the limiting groove 20 of the ring 14. Through the cooperation between the limiting groove 20 and the limiting post 15, and the fact that the ring 14 is fixed, the rotating shaft 10 can be locked and stopped from rotating, thus stopping the main body 1 of the beam transport vehicle from falling and protecting the main body 1 of the beam transport vehicle from damage.

[0035] In use, closing the switch of the second motor 7, through the cooperation of the screw 11 and the screw block 12 (the screw 11 is a bidirectional screw), and through the cooperation of the connecting column 5, can drive the lifting platform 6 to move left or right, adapting it to the size of the beam transport vehicle body 1 of different widths. This ensures that the lifting platform 6 and the beam transport vehicle body 1 remain vertical on both sides, preventing the lifting platform 6 and the beam transport vehicle body 1 from shifting, which would affect the stability during lifting. When it is necessary to lift the beam transport vehicle body 1, the connecting plate 9 is welded to both sides of the beam transport vehicle body 1. Closing the switch of the first motor 4, through the cooperation of the rotating shaft 10 and the roller 13, drives the wire rope 3 to move downward, causing the hook 8 to hook onto the through hole of the connecting plate 9. Through the cooperation of the first motor 4 and the wire rope 3, the beam transport vehicle body 1 can be lifted. The setting of multiple sets of wire ropes 3 can reduce the lifting weight and also... To ensure stability during lifting, the first motor 4, in conjunction with the wire rope 3, drives the rotating shaft 10 to rotate at a constant speed. Through the compression of the protrusion 18, the pressure plate 17, and the spring 16, along with the centrifugal force of the rotating shaft 10, cause the limiting post 15 to slide against the inner wall of the ring 14. If the first motor 4 suddenly fails, the beam transport vehicle body 1, under the influence of gravity, can drive the rotating shaft 10 to rotate rapidly. This rapid rotation increases the centrifugal force on the limiting post 15, and the spring 16 is compressed, causing the limiting post 15 to move into the limiting groove 20 of the ring 14. The engagement of the limiting groove 20 and the limiting post 15, combined with the fixed ring 14, stops the rotating shaft 10 from rotating, preventing further descent of the beam transport vehicle body 1 and protecting it from damage.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A beam transport vehicle integral lifting device, comprising a main U-shaped lifting frame (2), characterized in that: A second motor (7) is fixedly connected to one top of the U-shaped hanger (2). One end of the output shaft of the second motor (7) passes through the U-shaped hanger (2) and is fixedly connected to a screw (11). The screw (11) is a bidirectional screw. A screw block (12) is threadedly connected to the surface of the screw (11). A connecting post (5) is fixedly connected to the bottom end of the screw block (12).

2. The beam transport vehicle integral lifting device according to claim 1, characterized in that: The bottom end of the connecting column (5) passes through the U-shaped hanger (2) and is fixedly connected to the platform (6). The first motor (4) is fixedly connected to the middle of the front surface of the platform (6). One end of the output shaft of the first motor (4) passes through the platform (6) and is fixedly connected to the rotating shaft (10). The surface of the rotating shaft (10) is fixedly connected to the roller (13).

3. The beam transport vehicle integral lifting device according to claim 2, characterized in that: The surface of the roller (13) is fixedly connected with a steel wire rope (3). There are multiple steel wire ropes (3), which are linearly distributed. One end of the steel wire rope (3) passes through the lifting platform (6) and is fixedly connected with a hook (8).

4. The beam transport vehicle integral lifting device according to claim 3, characterized in that: The bottom end of the U-shaped hanger (2) is provided with a beam transport vehicle body (1). The top two sides of the beam transport vehicle body (1) are fixedly connected with connecting plates (9). There are multiple connecting plates (9), which are linearly distributed. One side of the connecting plate (9) is provided with a through hole, and one side of the through hole passes through the connecting plate (9). The hook (8) is in contact with the through hole.

5. The beam transport vehicle integral lifting device according to claim 2, characterized in that: The rotating shaft (10) has mounting grooves (19) on both sides of one end. The mounting grooves (19) are convex-shaped grooves. A protrusion (18) is fixedly connected to the bottom end of the mounting grooves (19). A limiting post (15) is slidably connected to the surface of the mounting grooves (19). The protrusion (18) is in contact with the limiting post (15).

6. The beam transport vehicle integral lifting device according to claim 5, characterized in that: A pressure plate (17) is fixedly connected to the surface of the limiting post (15), and a spring (16) is sleeved on the surface of the limiting post (15). A spring (16) is provided between the pressure plate (17) and the mounting groove (19).

7. The beam transport vehicle integral lifting device according to claim 5, characterized in that: One end of the surface of the rotating shaft (10) is provided with a ring (14), the ring (14) is fixedly connected to the platform (6), one end of the limiting post (15) passes through the rotating shaft (10) and contacts the inner surface of the ring (14), and the two ends of the inner side of the ring (14) are provided with limiting grooves (20), and the limiting post (15) is slidably connected to the limiting grooves (20).

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