Lightweight bridge crane

Abstract

The utility model discloses a lightweight bridge crane which comprises a main beam, a lifting mechanism and a crane carriage are arranged on the main beam, a control box is arranged on the main beam, a mounting frame used for mounting various electric appliances, a controller and a switch is mounted in the control box in a sliding manner, a box door is rotatably mounted at the top of one end of the control box, and the top of the other end of the control box is provided with a lifting mechanism. A connecting rod is rotatably mounted on the inner wall of the box door through a shaft pin, the end, away from the box door, of the connecting rod is movably mounted on one side of the mounting frame, the connecting rod pulls the mounting frame to slide out of the control box along with rotation of the box door, and the box door rotates to drive the connecting rod to pull the mounting frame to move along the track of the guide groove by rotating the box door. And in the rotating process of the box door, the guide rod slides in the guide groove, so that the mounting frame slides out of the control box, and various electric appliances, controllers and the like on the mounting frame are convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge cranes, in particular to a lightweight bridge crane. Background Art

[0002] Bridge crane, commonly known as "bridge crane", is a lifting equipment that is horizontally mounted above workshops, warehouses and material yards to lift materials. The bridge of the bridge crane runs longitudinally along the tracks laid on the elevated platforms on both sides, and the lifting trolley runs horizontally along the tracks laid on the bridge, forming a rectangular working range, which can make full use of the space under the bridge to lift materials.

[0003] In the "A Lightweight Bridge Crane" with the authorization announcement number "CN210620044U", it includes a main beam, an end beam is provided on the main beam, a lifting mechanism and a lifting trolley are provided on the main beam, a control box is provided on the main beam, a placement block is provided in the control box, and a control box body is provided on the placement block. Through the coordinated operation of the set rotating rod, protective cover, T-shaped pressure rod, connecting rod, moving rod, moving hole, movable block, rack, gear, rotating rod, and push rod, the protective cover is realized, and the controller body is moved and extended to the control box, but this operation mode is too cumbersome and has low practicality. Utility Model Content

[0004] The purpose of the utility model is to provide a lightweight bridge crane 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 lightweight bridge crane, comprising a main beam, a lifting mechanism and a lifting trolley are provided on the main beam, a control box is provided on the main beam, a mounting frame for installing various electrical appliances, controllers and switches is slidably installed inside the control box, a box door is rotatably installed on the top of one end of the control box, a connecting rod is rotatably installed on the inner wall of the box door through an axle pin, and the end of the connecting rod away from the box door is movably installed on one side of the mounting frame. As the box door rotates, the connecting rod will pull the mounting frame to slide out of the control box.

[0006] As a further preferred embodiment of the present technical solution, a slide rail is symmetrically fixedly installed on the bottom of the inner wall of the control box, a slide groove is opened inside the slide rail, and a slider is symmetrically fixedly installed on the bottom of the mounting frame, and the slider is slidably connected to the slide groove.

[0007] As a further preferred embodiment of the present technical solution, guide grooves are symmetrically provided on both sides of the mounting frame, a guide rod is fixedly installed on one end of the connecting rod away from the box door, and the guide rod is slidably connected to the guide groove.

[0008] As a further preferred embodiment of the present technical solution, a return spring is fixedly mounted on one end of the connecting rod away from the box door, and one end of the return spring away from the connecting rod is fixedly connected to the bottom end of the mounting bracket.

[0009] As a further preferred embodiment of the present technical solution, the length of the sliding block is greater than the length of the sliding groove.

[0010] As a further preferred embodiment of the present technical solution, a fixing rod is fixedly installed on the top of the control box, and a limiting rod is symmetrically fixedly installed on the end of the fixing rod, and a moving block is slidably installed between the two limiting rods, and a limiting hole is provided in the moving block corresponding to the position of the limiting rod, and the limiting hole is slidably connected to the limiting rod, and a triangular plug block is fixedly installed in the middle of one end of the moving block, and a fixing block is fixedly installed on one side of the top end of the box door, and a triangular slot is provided in the middle of the fixing block, and the triangular slot is slidably engaged with the triangular plug block, and an extrusion spring is sleeved on the outer side of the limiting rod, and one end of the extrusion spring is fixedly installed on one end of the moving block, and the other end of the extrusion spring is fixedly connected to the fixing rod.

[0011] The utility model provides a lightweight bridge crane, which has the following beneficial effects:

[0012] (1) The utility model rotates the box door, and the rotation of the box door will drive the connecting rod to pull the mounting frame to move along the track of the guide groove. During the rotation of the box door, the guide rod will slide inside the guide groove, so that the mounting frame can be slid out of the control box, which is convenient for the maintenance of various electrical appliances, controllers, etc. on the mounting frame.

[0013] (2) When the box door is closed after maintenance, the utility model pushes the moving block to cancel the limit of the triangular slot on the triangular insert block. The reset spring pulls the end of the connecting rod to assist in driving the guide rod to slide inside the guide groove, which is used to assist in pulling and resetting the mounting frame and the connecting rod, making it convenient to store the mounting frame into the control box and close the box door. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of the utility model;

[0016] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0017] Figure 4 It is a partial cross-sectional structural schematic diagram of the utility model;

[0018] In the figure: 1. Main beam; 2. Lifting mechanism; 3. Lifting trolley; 4. Control box; 5. Mounting frame; 6. Box door; 7. Connecting rod; 8. Slide rail; 9. Slide groove; 10. Sliding block; 11. Guide groove; 12. Guide rod; 13. Reset spring; 14. Fixed rod; 15. Limit rod; 16. Moving block; 17. Limit hole; 18. Triangular plug block; 19. Fixed block; 20. Triangular slot; 21. Extrusion spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] The utility model provides a technical solution: Figures 1 to 4 As shown, in this embodiment, a lightweight bridge crane includes a main beam 1, on which a lifting mechanism 2 and a lifting trolley 3 are provided, and a control box 4 is provided on the main beam 1. A mounting frame 5 for mounting various electrical appliances, controllers and switches is slidably installed inside the control box 4, and a box door 6 is rotatably installed on the top of one end of the control box 4. A connecting rod 7 is rotatably installed on the inner wall of the box door 6 through an axle pin, and one end of the connecting rod 7 away from the box door 6 is movably installed on one side of the mounting frame 5, and as the box door 6 rotates, the connecting rod 7 will pull the mounting frame 5 to slide out of the control box 4.

[0021] like Figures 1 to 4 As shown, a slide rail 8 is symmetrically fixedly installed on the bottom of the inner wall of the control box 4, and a slide groove 9 is opened inside the slide rail 8. A slider 10 is symmetrically fixedly installed on the bottom of the mounting frame 5, and the slider 10 is slidably connected to the slide groove 9.

[0022] When the box door 6 rotates, the mounting frame 5 will move, and the sliding block 10 at the bottom of the mounting frame 5 can be limited by the sliding groove 9 to allow the mounting frame 5 to move in translation.

[0023] like Figures 1 to 4 As shown, guide grooves 11 are symmetrically provided on both sides of the mounting frame 5 , and a guide rod 12 is fixedly installed on one end of the connecting rod 7 away from the box door 6 , and the guide rod 12 is slidably connected to the guide groove 11 .

[0024] When the connecting rod 7 pulls the mounting bracket 5 , the guide rod 12 can slide inside the guide groove 11 to continuously pull the mounting bracket 5 .

[0025] like Figures 1 to 4 As shown, a return spring 13 is fixedly mounted on one end of the connecting rod 7 away from the box door 6 , and one end of the return spring 13 away from the connecting rod 7 is fixedly connected to the bottom end of the mounting bracket 5 .

[0026] When the door 6 is closed after maintenance, the return spring 13 pulls the end of the connecting rod 7 to assist in driving the guide rod 12 to slide inside the guide groove 11, so as to assist in pulling and resetting the mounting frame 5 and the connecting rod 7.

[0027] like Figures 1 to 4 As shown, the length of the slider 10 is greater than the length of the slide slot 9 .

[0028] When the mounting frame 5 is smoothly moved out of the control box 4 , the sliding block 10 will also be located in the sliding groove 9 to support the mounting frame 5 .

[0029] like Figures 1 to 4 As shown, a fixing rod 14 is fixedly installed on the top of the control box 4, and a limiting rod 15 is symmetrically fixedly installed on the end of the fixing rod 14, and a moving block 16 is slidably installed between the two limiting rods 15. A limiting hole 17 is provided in the moving block 16 corresponding to the position of the limiting rod 15, and the limiting hole 17 is slidably connected with the limiting rod 15. A triangular plug block 18 is fixedly installed in the middle of one end of the moving block 16, and a fixing block 19 is fixedly installed on one side of the top of the box door 6. A triangular slot 20 is provided in the middle of the fixing block 19, and the triangular slot 20 is slidably engaged with the triangular plug block 18. An extrusion spring 21 is sleeved on the outer side of the limiting rod 15, and one end of the extrusion spring 21 is fixedly installed on one end of the moving block 16, and the other end of the extrusion spring 21 is fixedly connected to the fixing rod 14.

[0030] When the box door 6 rotates to ninety degrees, the triangular slot 20 on the fixed block 19 will squeeze the triangular plug block 18 and drive the moving block 16 installed with the triangular plug block 18 to slide on the outside of the limit rod 15. At this time, the squeezing spring 21 is in an elongated state. When the triangular slot 20 is aligned with the triangular plug block 18, the squeezing spring 21 pulls the moving block 16 to drive the triangular plug block 18 to be inserted into the triangular slot 20, so as to fix the position of the box door 6.

[0031] The utility model provides a lightweight bridge crane, and the specific working principle is as follows:

[0032] When the device is in use, when the electrical appliances inside the control box 4 are damaged and need to be repaired, the box door 6 is rotated, and the rotation of the box door 6 will drive the connecting rod 7 to pull the mounting frame 5 to move along the track of the guide groove 11. During the rotation of the box door 6, the guide rod 12 will slide inside the guide groove 11, so that the mounting frame 5 can be slid out of the control box 4.

[0033] When the box door 6 rotates to ninety degrees, the triangular slot 20 on the fixed block 19 will squeeze the triangular plug block 18 and drive the moving block 16 equipped with the triangular plug block 18 to slide on the outside of the limit rod 15. At this time, the squeezing spring 21 is in an elongated state. When the triangular slot 20 is aligned with the triangular plug block 18, the squeezing spring 21 pulls the moving block 16 to drive the triangular plug block 18 to be inserted into the triangular slot 20, which is used to fix the position of the box door 6, making it convenient for people to repair various electrical appliances and controllers installed on the mounting frame 5. When the box door 6 is closed after the repair is completed, the moving block 16 is pushed to cancel the limit of the triangular slot 20 on the triangular plug block 18. The pull of the reset spring 13 on the end of the connecting rod 7 will assist in driving the guide rod 12 to slide inside the guide groove 11, which is used to assist in pulling and resetting the mounting frame 5 and the connecting rod 7.

[0034] 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 lightweight bridge crane, comprising a main beam (1), a lifting mechanism (2) and a lifting trolley (3) being provided on the main beam (1), and a control box (4) being provided on the main beam (1), characterized in that: A mounting frame (5) for mounting various electrical appliances, controllers and switches is slidably mounted inside the control box (4); a box door (6) is rotatably mounted on the top of one end of the control box (4); a connecting rod (7) is rotatably mounted on the inner wall of the box door (6) via an axle pin; an end of the connecting rod (7) away from the box door (6) is movably mounted on one side of the mounting frame (5); as the box door (6) rotates, the connecting rod (7) pulls the mounting frame (5) to slide out of the control box (4).

2. A lightweight bridge crane according to claim 1, characterized in that: A slide rail (8) is symmetrically fixedly mounted on the bottom of the inner wall of the control box (4), a slide groove (9) is provided inside the slide rail (8), and a slider (10) is symmetrically fixedly mounted on the bottom of the mounting frame (5), the slider (10) being slidably connected to the slide groove (9).

3. A lightweight bridge crane according to claim 2, characterized in that: Guide grooves (11) are symmetrically formed on both sides of the mounting frame (5); a guide rod (12) is fixedly mounted on one end of the connecting rod (7) away from the box door (6); and the guide rod (12) is slidably connected to the guide groove (11).

4. A lightweight bridge crane according to claim 3, characterized in that: A return spring (13) is fixedly mounted on one end of the connecting rod (7) away from the box door (6), and one end of the return spring (13) away from the connecting rod (7) is fixedly connected to the bottom end of the mounting frame (5).

5. A lightweight bridge crane according to claim 2, characterized in that: The length of the sliding block (10) is greater than the length of the sliding groove (9).

6. A lightweight bridge crane according to claim 2, characterized in that: A fixing rod (14) is fixedly mounted on the top of the control box (4), and a limiting rod (15) is symmetrically fixedly mounted on the end of the fixing rod (14). A moving block (16) is slidably mounted between the two limiting rods (15), and a limiting hole (17) is provided in the moving block (16) corresponding to the position of the limiting rod (15). The limiting hole (17) is slidably connected to the limiting rod (15). A triangular plug block (18) is fixedly mounted in the middle of one end of the moving block (16). A fixing block (19) is fixedly mounted on one side of the top of the box door (6), and a triangular slot (20) is provided in the middle of the fixing block (19). The triangular slot (20) is slidably engaged with the triangular plug block (18). An extrusion spring (21) is sleeved on the outer side of the limiting rod (15), and one end of the extrusion spring (21) is fixedly mounted on one end of the moving block (16), and the other end of the extrusion spring (21) is fixedly connected to the fixing rod (14).

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