A single-girder crane

Abstract

This utility model discloses a single-girder crane, including a crossbeam, with connecting seats fixedly connected to both sides of the crossbeam, an electric hoist body at the bottom of the crossbeam, a movable seat at the bottom of the electric hoist, a hook at the bottom of the movable seat, a connecting component between the hook and the movable seat, and a protective component on the connecting seat. This utility model, by setting up the crossbeam, connecting seats, electric hoist body, movable seat, hook, connecting component, and protective component, solves the problems of existing single-girder cranes. While capable of lifting objects, existing cranes suffer from frequent hook use, leading to wear and even cracks, and cumbersome hook replacement. Furthermore, the electric hoist lacks buffer structures on both sides during movement, making it susceptible to damage in the event of a collision, thus reducing its practicality.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically a single-girder crane. Background Technology

[0002] A single-girder crane is a type of lifting equipment that spans across a workshop, warehouse, or material yard for material handling. Its core feature is that it has only one main beam structure. It is widely used in light and medium-sized material handling scenarios and features high space utilization and simple structure. A single-girder crane is a variation of a bridge crane and is usually composed of a single main beam, an electric hoist, a trolley traveling mechanism, and an electrical control system.

[0003] Existing patent CN210393456U discloses a single-girder crane, including a single girder. End plates are welded to the outer walls at both ends of the single girder, and fixed lugs with mounting holes are welded to the sides of the end plates away from the outer walls of the single girder. A sliding platform is slidably connected to the bottom of the single girder. An electric hoist is bolted to the outer wall of the bottom of the sliding platform. A wire rope is driven through the electric hoist and wound onto the electric hoist. A suspended movable roller is driven through the bottom end of the wire rope, and a lifting rod is welded below the movable roller. This invention replaces the traditional sliding friction method of the electric hoist along the single girder with a roller friction method, making the movement of the sliding platform more flexible, reducing the risk of rapid wear between the single girder and the electric hoist, providing excellent guidance, and preventing operation with large gaps between the two, thus ensuring the movement accuracy during frequent use of the single-girder crane.

[0004] Based on the search of the aforementioned patents and in conjunction with existing single-girder cranes, it was found that although the aforementioned single-girder cranes can lift items, the hooks are prone to wear and even cracks due to frequent use, and hook replacement is relatively cumbersome. In addition, the electric hoist lacks a buffer structure on both sides when moving, and is easily damaged in the event of a collision, thus reducing its practicality. Utility Model Content

[0005] The purpose of this utility model is to provide a single-girder crane to solve the problems mentioned in the background art. When using existing single-girder cranes, although they can lift objects, the hooks are prone to wear and even cracks due to frequent use, and hook replacement is relatively cumbersome. At the same time, the electric hoist lacks a buffer structure on both sides when moving, and is easily damaged in the event of a collision, thus reducing its practicality.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a single-beam crane, comprising a crossbeam, with connecting seats fixedly connected to both sides of the crossbeam, an electric hoist body provided at the bottom of the crossbeam, a movable seat provided at the bottom of the electric hoist, a hook provided at the bottom of the movable seat, a connecting component provided between the hook and the movable seat, and a protective component provided on the connecting seat;

[0007] The connecting component includes a cavity inside the movable seat, through openings on both sides of the bottom of the cavity, movable plates on both sides of the cavity, a sliding plate fixedly connected to the bottom of the movable plate, multiple support rods fixedly connected to one side of the sliding plate, a positioning plate fixedly connected to one end of the support rod, a bidirectional screw connected to the movable plate, a connecting plate fixedly connected to the top of the hook, and auxiliary components for improving connection stability. The bidirectional screw is screwed to the movable plate and rotatably connected to the movable seat.

[0008] Preferably, the protective component includes a fixed base fixedly connected to the bottom of the connecting seat, a protective cavity opened inside the fixed base, a fixed plate disposed inside the protective cavity, a movable rod fixedly connected to one side of the fixed plate, a protective plate fixedly connected to one end of the movable rod, a first spring sleeved on the outside of the movable rod, and a damper body fixedly connected to the other side of the fixed plate. The fixed plate is slidably connected to the protective cavity, and the movable rod passes through the protective cavity and is slidably connected to the fixed base.

[0009] Preferably, guide rods are fixedly connected to both sides of the protective cavity, and a second spring is sleeved on the outside of the guide rod. The two ends of the second spring are fixedly connected to the fixed plate and the inner wall of the protective cavity, respectively. The guide rod passes through the fixed plate and is slidably connected to the fixed plate.

[0010] Preferably, the auxiliary component includes a plurality of slots evenly arranged on both sides of the connecting plate and a rod disposed in the slot, wherein the rod is inserted into the slot and the rod is fixedly connected to the positioning plate.

[0011] Preferably, a support rod is fixedly connected to the inner wall of the through-hole, and the support rod passes through the slide plate and is slidably connected to the slide plate.

[0012] Preferably, a connecting screw is fixedly connected to the top of the connecting plate, and the connecting screw is screwed to the bottom of the movable seat.

[0013] Preferably, a buffer pad is provided on one side of the protective plate, and the buffer pad is adhered to the protective plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting up a crossbeam, connecting seat, electric hoist body, moving seat, hook and connecting parts, the hook can be screwed to the bottom of the moving seat through the connecting screw. The rotation of the bidirectional screw can make the two moving plates move in opposite directions, which can drive the positioning plate to move and clamp and fix the connecting plate. At the same time, the insertion rod can be inserted into the slot to stably connect and fix the hook. The hook can be quickly installed and replaced, which can improve efficiency and greatly improve practicality and efficiency.

[0016] 2. By incorporating protective components, the electric hoist body can be buffered through the protective plate and buffer pad. The movement of the protective plate can cause the first and second springs to deform. The first and second springs, along with the damper body, can buffer the impact of collisions, thereby protecting the electric hoist body from collision damage, extending its service life, and further improving its practicality. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram provided for this utility model;

[0018] Figure 2 The left view provided for this utility model;

[0019] Figure 3 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA;

[0020] Figure 4 Provided by this utility model Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 Provided by this utility model Figure 3 Enlarged view of point C in the middle.

[0022] In the diagram: 1. Crossbeam; 11. Connecting seat; 12. Electric hoist body; 13. Moving seat; 14. Hook; 21. Cavity; 22. Through-hole; 23. Moving plate; 24. Slide plate; 25. Support rod; 26. Positioning plate; 27. Double-acting screw; 28. Connecting plate; 31. Fixed seat; 32. Protective cavity; 33. Fixed plate; 34. Moving rod; 35. Protective plate; 36. First spring; 37. Damper body; 41. Guide rod; 42. Second spring; 51. Slot; 52. Insert rod; 61. Support rod; 71. Connecting screw; 81. Buffer pad. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 This utility model provides a technical solution: a single-girder crane, including a crossbeam 1, with connecting seats 11 fixedly connected to both sides of the crossbeam 1, an electric hoist body 12 at the bottom of the crossbeam 1, a movable seat 13 at the bottom of the electric hoist, a hook 14 at the bottom of the movable seat 13, a connecting component between the hook 14 and the movable seat 13, and a protective component on the connecting seat 11. The connecting component includes a cavity 21 opened inside the movable seat 13, through openings 22 opened on both sides of the bottom of the cavity 21, and movable plates on both sides of the cavity 21. 23. A sliding plate 24 fixedly connected to the bottom of the movable plate 23; multiple support rods 25 fixedly connected to one side of the sliding plate 24; a positioning plate 26 fixedly connected to one end of the support rods 25; a bidirectional screw 27 connected to the movable plate 23; a connecting plate 28 fixedly connected to the top of the hook 14; and auxiliary components for improving connection stability. The bidirectional screw 27 is screwed to the movable plate 23 and rotatably connected to the movable base 13. Rotation of the bidirectional screw 27 can cause the two movable plates 23 to move in opposite directions, thereby controlling the two sliding plates 24 to drive the fixed base 13. The positioning plate 26 moves, allowing it to contact and clamp the connecting plate 28. This enables the hook 14 to be quickly connected and fixed to the moving seat 13, facilitating rapid replacement of damaged hooks 14 and improving replacement efficiency. The auxiliary components include multiple slots 51 evenly arranged on both sides of the connecting plate 28 and insert rods 52 within the slots 51. The insert rods 52 are inserted into the slots 51 and fixedly connected to the positioning plate 26. The insertion of the insert rods 52 into the slots 51 further enhances the fixation of the hook 14. To ensure stability and prevent the hook 14 from detaching from the movable seat 13, a support rod 61 is fixedly connected to the inner wall of the through-hole 22. The support rod 61 passes through the slide plate 24 and is slidably connected to the slide plate 24. The slide plate 24 can slide outside the support rod 61. The support rod 61 can improve the movement stability of the slide plate 24 and support the slide plate 24. A connecting screw 71 is fixedly connected to the top of the connecting plate 28. The connecting screw 71 is screwed to the bottom of the movable seat 13. The connecting screw 71 can be screwed into the bottom of the movable seat 13, which can further improve the stability of the hook 14.

[0025] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 5 The protective components include a fixed base 31 fixedly connected to the bottom of the connecting seat 11, a protective cavity 32 opened inside the fixed base 31, a fixed plate 33 disposed inside the protective cavity 32, a movable rod 34 fixedly connected to one side of the fixed plate 33, a protective plate 35 fixedly connected to one end of the movable rod 34, a first spring 36 sleeved on the outside of the movable rod 34, and a damper body 37 fixedly connected to the other side of the fixed plate 33. The fixed plate 33 is slidably connected to the protective cavity 32, the movable rod 34 passes through the protective cavity 32 and is slidably connected to the fixed base 31, and the two ends of the first spring 36 are fixedly connected to the protective plate 35 and the fixed base 31 respectively. When the protective plate 35 is moved by a collision, it can drive the first spring 36 to deform. The first spring 36 and the damper body 37 can buffer the collision. The protective cavity 32 can protect the main body 12 of the electric hoist from collision damage and improve its service life. Guide rods 41 are fixedly connected to both sides inside the cavity 32. A second spring 42 is sleeved on the outside of the guide rods 41. The two ends of the second spring 42 are fixedly connected to the fixed plate 33 and the inner wall of the protective cavity 32, respectively. The guide rods 41 pass through the fixed plate 33 and are slidably connected to the fixed plate 33. The movement of the fixed plate 33 can deform the second spring 42. The guide rods 41 can support the second spring 42 and prevent the second spring 42 from tilting. The second spring 42 can further improve the buffering performance against collisions. A buffer pad 81 is provided on one side of the protective plate 35. The buffer pad 81 is adhered to the protective plate 35 and can protect the protective plate 35 and improve its service life.

[0026] Working principle: During operation, the connecting screw 71 at the top of the hook 14 is screwed to the bottom of the movable seat 13. At this time, the insertion rod 52 is aligned with the slot 51. Then, the double-acting screw 27 is rotated. The rotation of the double-acting screw 27 can drive the two movable plates 23 to move towards the middle. The movement of the movable plates 23 can drive the sliding plate 24 to move. The movement of the sliding plate 24 can drive the support rod 25 and the positioning plate 26 to move. The positioning plate 26 can contact the connecting plate 28 and clamp and fix it. At the same time, the insertion rod 52 can be inserted into the slot 51, which can improve the fixing effect of the hook 14. The movement of the hook 14 can be controlled by the electric hoist body 12 to lift the items. When the electric hoist body 12 collides, it first contacts the buffer pad 81 and squeezes the buffer pad 81 to drive the protective plate. The movement of the protective plate 35 can drive the moving rod 34 to move, which in turn causes the first spring 36 to deform. The moving rod 34 can drive the fixed plate 33 to move, and the fixed plate 33 can compress the second spring 42 to deform it. The first spring 36, the second spring 42, and the damper body 37 can buffer the impact, thereby protecting the electric hoist body 12, preventing damage, and improving its lifespan. When the hook 14 needs to be replaced, the bidirectional screw 27 is rotated in the opposite direction to disengage the insertion rod 52 from the slot 51, and then the hook 14 is unscrewed and replaced with a new hook 14. The above is the working process of the entire device. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-girder crane, comprising a crossbeam (1), characterized in that: The crossbeam (1) is fixedly connected to the two sides of the crossbeam (1), the bottom of the crossbeam (1) is provided with the electric hoist body (12), the bottom of the electric hoist is provided with the movable seat (13), the bottom of the movable seat (13) is provided with the hook (14), the hook (14) and the movable seat (13) are provided with the connecting component, and the connecting seat (11) is provided with the protective component. The connecting components include a cavity (21) inside the movable seat (13), through openings (22) on both sides of the bottom of the cavity (21), movable plates (23) on both sides of the cavity (21), a sliding plate (24) fixedly connected to the bottom of the movable plate (23), multiple support rods (25) fixedly connected to one side of the sliding plate (24), a positioning plate (26) fixedly connected to one end of the support rod (25), a bidirectional screw (27) connected to the movable plate (23), a connecting plate (28) fixedly connected to the top of the hook (14), and auxiliary components for improving connection stability. The bidirectional screw (27) is screwed to the movable plate (23), and the bidirectional screw (27) is rotatably connected to the movable seat (13).

2. A single-girder crane according to claim 1, characterized in that: The protective component includes a fixed base (31) fixedly connected to the bottom of the connecting seat (11), a protective cavity (32) opened inside the fixed base (31), a fixed plate (33) disposed inside the protective cavity (32), a movable rod (34) fixedly connected to one side of the fixed plate (33), a protective plate (35) fixedly connected to one end of the movable rod (34), a first spring (36) sleeved on the outside of the movable rod (34), and a damper body (37) fixedly connected to the other side of the fixed plate (33). The fixed plate (33) is slidably connected to the protective cavity (32), and the movable rod (34) passes through the protective cavity (32) and is slidably connected to the fixed base (31).

3. A single-girder crane according to claim 2, characterized in that: Guide rods (41) are fixedly connected to both sides of the protective cavity (32). A second spring (42) is sleeved on the outside of the guide rod (41). The two ends of the second spring (42) are fixedly connected to the fixing plate (33) and the inner wall of the protective cavity (32) respectively. The guide rod (41) passes through the fixing plate (33) and is slidably connected to the fixing plate (33).

4. A single-girder crane according to claim 1, characterized in that: The auxiliary component includes a plurality of slots (51) evenly arranged on both sides of the connecting plate (28) and a plug (52) disposed in the slot (51). The plug (52) is inserted into the slot (51) and fixedly connected to the positioning plate (26).

5. A single-girder crane according to claim 1, characterized in that: A support rod (61) is fixedly connected to the inner wall of the through-hole (22). The support rod (61) passes through the slide plate (24) and is slidably connected to the slide plate (24).

6. A single-girder crane according to claim 1, characterized in that: The top of the connecting plate (28) is fixedly connected to a connecting screw (71), and the connecting screw (71) is screwed to the bottom of the movable seat (13).

7. A single-girder crane according to claim 2, characterized in that: A buffer pad (81) is provided on one side of the protective plate (35), and the buffer pad (81) is adhered to the protective plate (35).

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