Automatic jacking type bridge crane

Abstract

The utility model discloses an automatic jacking type bridge crane which comprises a main beam, two ends of the main beam are fixedly connected with end beams, the bottom of the main beam is provided with a hoisting structure, the hoisting structure comprises a hoisting trolley and an electric hoist, the bottoms of the end beams are provided with wheels, the end beams are provided with telescopic structures and push plates, and the push plates are arranged on the telescopic structures. A transmission structure is arranged on the end beam and comprises a main shaft, a driving wheel, a conveying belt, a driven wheel and a push rod, a supporting arc is fixedly connected to the outer end of the push rod, a sliding groove is formed in the bottom in the end beam, a connecting block is slidably connected into the sliding groove, and an auxiliary wheel is arranged at the bottom of the connecting block. A top plate is fixedly connected to the upper surface of the connecting block, and an arc groove is formed in the top of the top plate. By means of the device, the driving wheel rotates to drive the push rod to rotate, after the supporting arc enters the arc groove of the top plate, the top plate and the connecting block move downwards, the auxiliary wheel makes contact with the ground, the wheel is lifted, and therefore the jack is placed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge crane technical field, especially a kind of automatic jacking bridge crane. BACKGROUND

[0002] Bridge crane is a kind of large material handling equipment widely used in factory, warehouse, freight yard and other places, and the main function is to move the main beam along the factory span direction, and realize the accurate hoisting of material in longitudinal and vertical directions by hoisting trolley suspended on the main beam, so as to complete the lifting and handling of heavy objects.

[0003] The existing bridge crane technology, when the wheel at the bottom of end beam fails or needs to be replaced, maintenance personnel often need to manually insert the jack between the end beam and the running rail surface, which has small operation space, complicated process and certain safety hazards. For example, Chinese patent "a kind of automatic jacking bridge crane" with application number "CN202222723898.8" uses electric hydraulic push rod to extend the jacking, and the end of the clamping block enters the inside of the clamping groove, which plays the role of limiting support, facilitates the position limiting of adjusting rod, and improves the stability of support bearing. But when using, the distance between the end beam bottom and the running rail surface is small, so it is difficult to put in the jack if the wheel needs to be replaced. UTILITY MODEL CONTENT

[0004] The utility model aims to solve one of the technical problems in the prior art, provide a kind of automatic jacking bridge crane, when the jack cannot be directly placed between the end beam bottom surface and the rail surface when replacing the wheel at the bottom of end beam, the motor driven driving wheel and driven wheel can be started to rotate, the push rod is driven to rotate, the supporting arc enters the arc groove and gradually pushes down the top plate, so that the connecting block and auxiliary wheel are lowered to contact the rail surface, the wheel is jacked up, the jack is easily put in for replacement operation, and the maintenance efficiency and safety are improved.

[0005] The utility model also provides a kind of automatic jacking bridge crane with the above, it include: girder, the both ends of girder are fixedly connected with end beam, the bottom of girder is provided with hoisting structure, the hoisting structure includes hoist trolley, electric hoist, the bottom of end beam is provided with wheel, the retractable structure is provided on end beam, the output end of retractable structure is fixedly connected with push plate;The transmission structure is provided on end beam, and the transmission structure includes main shaft, driving wheel, conveying belt, driven wheel and push rod, the outer end of push rod is fixedly connected with support arc, the inner bottom of end beam is provided with chute, the connecting block is slidably connected in the inside of chute, the auxiliary wheel is provided on the bottom of connecting block, the top surface of connecting block is fixedly connected with top plate, and the top of top plate is provided with arc groove.Through the above device, by driving wheel rotation, push rod and support arc are rotated, when support arc enters the arc groove of top plate, top plate is lowered together with connecting block, and auxiliary wheel contacts ground, temporarily supports effect is played, wheel is lifted, and thus the placement of jack and wheel replacement are facilitated.

[0006] According to the automatic jacking bridge crane, the bottom of the girder is provided with a sliding rail, the hoist trolley is rollingly connected inside the sliding rail, and the electric hoist is fixedly connected to the lower surface of the hoist trolley. Through the above device, the electric hoist is stably moved on the bridge, and the transverse hoisting operation is facilitated.

[0007] According to the automatic jacking bridge crane, the retractable structure includes a hydraulic cylinder and a hydraulic rod, the hydraulic rod is fixedly connected to the output end of the hydraulic cylinder, and the push plate is fixedly connected to the output end of the hydraulic rod. Through the above device, the automatic jacking of the push plate is realized, and the wheel replacement is assisted.

[0008] According to the automatic jacking bridge crane, the upper surface of the end beam is fixedly connected with a motor, and the main shaft is rotatably connected to the output end of the motor. Through the above device, the main shaft is actively driven to provide power source for the transmission system.

[0009] According to the automatic jacking bridge crane, the driving wheel and the driven wheel are both belt pulleys, and the conveying belt is located on the outer surfaces of the driving wheel and the driven wheel. Through the above device, the stable transmission of power between the wheel sets is ensured, and the mechanical action is improved.

[0010] According to the automatic jacking bridge crane, the outer surface of the driven wheel is fixedly connected with a connecting shaft, the connecting shaft is rotatably connected inside the end beam, and the push rod is fixedly connected to the other end of the connecting shaft. Through the above device, the push rod is synchronously rotated with the transmission structure, and the lower structure is driven to automatically lift.

[0011] The utility model relates to an automatic jacking bridge crane, the support arc is semicircular, the inside bottom of end beam is provided with moving groove, the connecting block is located inside moving groove, and the sliding slot is located at both sides of moving groove.

[0012] The utility model relates to an automatic jacking bridge crane, the auxiliary wheel is located at the side portion of wheel, the auxiliary wheel linear array arrangement, the arc groove is arc shape.

[0013] Advantages

[0014] Compared with the prior art, the automatic jacking bridge crane, when the jack cannot be directly placed between the end beam bottom surface and the rail surface when replacing the end beam bottom wheel, the motor driven driving wheel and driven wheel can be started to rotate, the push rod is rotated, the support arc enters the arc groove and gradually pushes down the top plate, so that the connecting block and auxiliary wheel are lowered to contact the rail surface, the wheel is jacked up, the replacement operation is facilitated, and the maintenance efficiency and safety are improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further explained in connection with the drawings and examples;

[0016] Figure 1 It is the front view of automatic jacking bridge crane of the utility model;

[0017] Figure 2 It is the front view of automatic jacking bridge crane of the utility model; Figure 1 Internal structure diagram;

[0018] Figure 3 It is the front view of automatic jacking bridge crane of the utility model; Figure 1 Internal section view;

[0019] Figure 4 It is the front view of automatic jacking bridge crane of the utility model; Figure 2 The enlarged view of A in the automatic jacking bridge crane of the utility model;

[0020] Figure 5 It is the front view of automatic jacking bridge crane of the utility model; Figure 3 The enlarged view of B in the automatic jacking bridge crane of the utility model.

[0021] Legend:

[0022] 1. Main beam; 2. End beam; 3. Lifting structure; 4. Slide rail; 5. Wheel; 6. Motor; 7. Main shaft; 8. Driving wheel; 9. Conveyor belt; 10. Driven wheel; 11. Connecting shaft; 12. Push rod; 13. Support arc; 14. Moving groove; 15. Auxiliary wheel; 16. Slide groove; 17. Connecting block; 18. Top plate; 19. Arc groove; 20. Telescopic structure; 21. Push plate. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1 , Figure 2 , Figure 3 This utility model embodiment discloses an automatic lifting bridge crane, which includes: a main beam 1, with end beams 2 fixedly connected to both ends of the main beam 1, a lifting structure 3 provided at the bottom of the main beam 1, the lifting structure 3 including a lifting trolley and an electric hoist, a slide rail 4 provided at the bottom of the main beam 1, the lifting trolley being rotatably connected inside the slide rail 4, the electric hoist being fixedly connected to the lower surface of the lifting trolley, wheels 5 provided at the bottom of the end beams 2, a telescopic structure 20 provided on the end beams 2, a push plate 21 fixedly connected to the output end of the telescopic structure 20, the telescopic structure 20 including a hydraulic cylinder and a hydraulic rod, the hydraulic rod being fixedly connected to the output end of the hydraulic cylinder, and the push plate 21 being fixedly connected to the output end of the hydraulic rod;

[0025] Specifically, when replacing the wheel 5 at the bottom of the end beam 2, it is difficult to place the jack between the bottom surface of the end beam 2 and the travel rail surface. The telescopic structure 20 drives the push plate 2 to rise and fall, which assists in supporting the wheel 5 and prevents the auxiliary wheel 15 from bearing too much pressure.

[0026] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5The end beam 2 is equipped with a transmission structure, which includes a main shaft 7, a driving wheel 8, a conveyor belt 9, a driven wheel 10, and a push rod 12. A motor 6 is fixedly connected to the upper surface of the end beam 2. The main shaft 7 is rotatably connected to the output end of the motor 6. Both the driving wheel 8 and the driven wheel 10 are belt pulleys. The conveyor belt 9 is located on the outer surface of the driving wheel 8 and the driven wheel 10. A connecting shaft 11 is fixedly connected to the outer surface of the driven wheel 10. The connecting shaft 11 is rotatably connected to the inside of the end beam 2. The push rod 12 is fixedly connected to the other end of the connecting shaft 11. The outer end of the push rod 12 is fixedly connected to... The end beam 2 is connected to a support arc 13. A sliding groove 16 is provided at the bottom of the end beam 2. A connecting block 17 is slidably connected inside the sliding groove 16. The support arc 13 is semi-circular. A moving groove 14 is provided at the bottom of the end beam 2. The connecting block 17 is located inside the moving groove 14. The sliding groove 16 is located on both sides of the moving groove 14. An auxiliary wheel 15 is provided at the bottom of the connecting block 17. A top plate 18 is fixedly connected to the upper surface of the connecting block 17. An arc groove 19 is provided at the top of the top plate 18. The auxiliary wheel 15 is located on the side of the wheel 5. The auxiliary wheels 15 are arranged in a linear array. The arc groove 19 is arc-shaped.

[0027] Specifically, when the motor 6 is turned on, it drives the drive wheel 8 and the driven wheel 10 to rotate, causing the push rod 12 to rotate. When the support arc 13 at the outer end of the push rod 12 enters the arc groove 19, it gradually pushes the top plate 18 to move the connecting block 17 down, so that the auxiliary wheel 15 at the bottom of the connecting block 17 contacts the travel rail surface, thereby lifting the wheel 5. At this time, the jack can be placed in to replace the wheel 5.

[0028] Working principle: When replacing the wheel 5 at the bottom of the end beam 2, it is difficult to place the jack between the bottom surface of the end beam 2 and the travel rail surface. At this time, the motor 6 is turned on to drive the drive wheel 8 and the driven wheel 10 to rotate, causing the push rod 12 to rotate. When the support arc 13 at the outer end of the push rod 12 enters the arc groove 19, it gradually pushes the top plate 18 to move the connecting block 17 down, so that the auxiliary wheel 15 at the bottom of the connecting block 17 contacts the travel rail surface, thereby lifting the wheel 5. At this time, the jack can be placed in to replace the wheel 5.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A self-erecting bridge crane, characterized in that Include: The main beam (1), both ends of the main beam (1) are fixedly connected with end beam (2), the bottom of the main beam (1) is provided with hoisting structure (3), the hoisting structure (3) includes hoist trolley, electric hoist, the bottom of the end beam (2) is provided with wheel (5), the end beam (2) is provided with telescopic structure (20), the output end of the telescopic structure (20) is fixedly connected with push plate (21); The end beam (2) is provided with transmission structure, the transmission structure includes main shaft (7), driving wheel (8), conveying belt (9), driven wheel (10) and push rod (12), the outer end of the push rod (12) is fixedly connected with support arc (13), the inner bottom of the end beam (2) is provided with sliding groove (16), the sliding groove (16) is slidably connected with connecting block (17) inside, the bottom of the connecting block (17) is provided with auxiliary wheel (15), the top surface of the connecting block (17) is fixedly connected with top plate (18), the top of the top plate (18) is provided with arc groove (19).

2. An automatic launching bridge crane according to claim 1, characterized in that The bottom of the main beam (1) is provided with slide rail (4), the hoist trolley is rollingly connected inside the slide rail (4), and the electric hoist is fixedly connected to the lower surface of the hoist trolley.

3. An automatic launching bridge crane according to claim 1, characterized in that The telescopic structure (20) includes hydraulic cylinder and hydraulic rod, the hydraulic rod is fixedly connected to the output end of the hydraulic cylinder, and the push plate (21) is fixedly connected to the output end of the hydraulic rod.

4. An automatic launching bridge crane according to claim 1, characterized in that The upper surface of the end beam (2) is fixedly connected with motor (6), and the main shaft (7) is rotatably connected to the output end of the motor (6).

5. An automatic launching bridge crane according to claim 1, characterized in that The driving wheel (8) and the driven wheel (10) are both belt pulleys, and the conveying belt (9) is located on the outer surfaces of the driving wheel (8) and the driven wheel (10).

6. An automatic launching bridge crane according to claim 1, characterized in that The outer surface of the driven wheel (10) is fixedly connected with connecting shaft (11), the connecting shaft (11) is rotatably connected inside the end beam (2), and the push rod (12) is fixedly connected to the other end of the connecting shaft (11).

7. An automatic launching bridge crane according to claim 1, characterized in that The support arc (13) is semicircular, the inner bottom of the end beam (2) is provided with moving groove (14), the connecting block (17) is located inside the moving groove (14), and the sliding groove (16) is located on both sides of the moving groove (14).

8. An automatic launching bridge crane according to claim 1, characterized in that The auxiliary wheel (15) is located on the side of the wheel (5), the auxiliary wheel (15) is linearly arranged, and the arc groove (19) is arc-shaped.

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