Lower beam lifting hook of bridge crane

Abstract

The utility model relates to the technical field of crane hooks, and discloses a bridge crane underneath beam hook which comprises a table body, a side plate is fixedly mounted on the inner side of the table body, a round roller is rotatably mounted on the inner side of the side plate, a circular ring is rotatably mounted below the table body, a round block is fixedly mounted below the circular ring, and the round roller is rotatably mounted on the inner side of the round block. A rectangular plate is movably mounted on the outer side of the circular block, and an auxiliary block is fixedly mounted on the front side of the rectangular plate. According to the lower cross beam lifting hook of the bridge crane, the first servo motor and the second servo motor are started, the round roller rotates to slowly take back a steel wire rope, at the moment, the second servo motor drives the first gear to rotate, the rectangular plate is made to move back and forth under limiting of the limiting plate, and therefore the steel wire rope is evenly contained above the round roller. The underneath beam lifting hook of the bridge crane assists releasing and withdrawing of the steel wire ropes through the auxiliary blocks, so that the steel wire ropes are prevented from being mutually extruded and wound to affect lifting operation, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of crane hook technology, and more specifically, to a hook for adding a crossbeam to a bridge crane. Background Technology

[0002] A bridge crane, also known as an overhead crane or gantry crane, is a lifting device that spans across workshops, warehouses, and material yards for lifting and transporting materials. It gets its name from its shape, resembling a bridge, as it rests on tall concrete pillars or metal supports at both ends. A bridge crane with a lower crossbeam hook is a specially designed hook device, typically installed below the bridge crane, used for lifting and moving heavy objects.

[0003] Traditional overhead cranes with under-beam hooks have the following shortcomings: During heavy lifting operations, rope tension management (usually wire rope) is a complex and critical process. The rope not only needs sufficient tension to tightly wind around the drum (or roller) to prevent slippage or loosening, but it also needs to avoid over-tension, as this can also lead to a series of problems, including an increased risk of entanglement. When the rope is too taut, it may be more prone to slippage or jumping on the drum, increasing the risk of entanglement. Such entanglement can lead to rope damage, drum wear, and even serious safety accidents. Therefore, improvements are needed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a bridge crane with a lower crossbeam hook, which has the advantage of being easy to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bridge crane with a lower crossbeam hook, comprising a platform, a side plate fixedly installed on the inner side of the platform, a circular roller rotatably installed on the inner side of the side plate, a circular ring rotatably installed below the platform, a circular block fixedly installed below the circular ring, a rectangular plate movably installed on the outer side of the circular block, an auxiliary block fixedly installed on the front side of the rectangular plate, a horizontal groove opened at the bottom of the platform corresponding to the auxiliary block, and a wire rope movably installed on the outer side of the side plate corresponding to the auxiliary block.

[0006] As a preferred embodiment of this utility model, an installation block is fixedly installed below the wire rope, a slot is provided below the installation block, a circular groove is provided above the slot, and slots are provided below both ends of the circular groove. An installation shaft is movably installed inside the circular groove, and locking blocks located inside the slots are fixedly installed on both sides of the installation shaft. A hook is fixedly installed below the installation shaft, and a return spring located inside the locking blocks is elastically installed on the inner side of the circular groove.

[0007] As a preferred embodiment of this utility model, a second servo motor is fixedly installed on the inner side of the platform, and a first gear is rotatably installed on the lower part of the platform. The output end of the second servo motor is fixedly connected to the inner side of the first gear, and the first gear meshes with a ring.

[0008] As a preferred technical solution of this utility model, a limiting groove is provided at the bottom of the platform, a limiting rod is fixedly installed inside the limiting groove, a limiting plate is movably sleeved on the outside of the limiting rod, and the limiting plate is fixedly connected to the outside of the rectangular plate.

[0009] As a preferred embodiment of this utility model, a fixing block is fixedly installed below the circular block, and the fixing block is located below the rectangular plate.

[0010] As a preferred embodiment of this utility model, a telescopic spring is elastically installed between the inner side of the limiting groove and both sides of the limiting plate, and the telescopic spring is movably sleeved on the outer side of the limiting rod.

[0011] As a preferred embodiment of this utility model, a servo motor is fixedly installed on the outer side of the side plate, and the output end of the servo motor is fixedly connected to the front side of the roller.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses servo motor one and servo motor two to rotate the circular roller and slowly retract the wire rope. At this time, servo motor two drives gear one to rotate, causing the rectangular plate to move back and forth under the limit of the limiting plate, thereby evenly collecting the wire rope above the circular roller. Compared with the traditional bridge crane with a crossbeam hook, this bridge crane with a crossbeam hook uses an auxiliary block to assist in the release and retraction of the wire rope, thereby preventing the wire rope from being squeezed and tangled, affecting the lifting operation, and making it easy to use.

[0014] 2. This utility model allows for quick installation and replacement of the hook by pressing the hook upwards, causing the locking block to disengage from the slot and compress the return spring. Then, the mounting shaft is rotated to move the locking block above the slot. At this point, the return spring releases its elastic potential energy, pushing the locking block downwards and disengaging the mounting shaft from the circular slot. Compared with traditional under-beam hooks for bridge cranes, this under-beam hook allows for quick installation and replacement of the hook by pressing upwards and rotating it, making it convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0017] Figure 3 This is a vertical cross-sectional view of the present invention;

[0018] Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point A;

[0019] Figure 5 This is an exploded structural diagram of the hook and mounting block of this utility model.

[0020] In the diagram: 1. Platform; 2. Side plate; 3. Circular roller; 4. Servo motor one; 5. Steel wire rope; 6. Horizontal groove; 7. Mounting block; 8. Slot; 9. Circular groove; 10. Slot; 11. Return spring; 12. Mounting shaft; 13. Slot; 14. Hook; 15. Gear one; 16. Servo motor two; 17. Ring; 18. Circular block; 19. Fixing block; 20. Rectangular plate; 21. Auxiliary block; 22. Limiting plate; 23. Limiting groove; 24. Limiting rod; 25. Telescopic spring. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 5 As shown, this utility model provides a bridge crane with a lower crossbeam hook, including a platform 1, a side plate 2 fixedly installed on the inner side of the platform 1, a roller 3 rotatably installed on the inner side of the side plate 2, a ring 17 rotatably installed on the lower part of the platform 1, a round block 18 fixedly installed below the ring 17, a rectangular plate 20 movably installed on the outer side of the round block 18, an auxiliary block 21 fixedly installed on the front side of the rectangular plate 20, a horizontal groove 6 is opened at the bottom of the platform 1, the horizontal groove 6 corresponds to the auxiliary block 21, and a wire rope 5 is movably installed on the outer side of the side plate 2, the wire rope 5 corresponds to the auxiliary block 21.

[0023] When using hook 14 to lift an object, first connect hook 14 to the object to be lifted, then start servo motor 14 and servo motor 2 16. Servo motor 14 drives roller 3 to rotate. The rotation of roller 3 slowly retracts wire rope 5, thereby lifting the object. At this time, servo motor 2 16 drives gear 15 to rotate. Gear 15 drives ring 17 to rotate. Ring 17 drives block 18 to make circular motion, so that rectangular plate 20 moves back and forth under the limit of limit plate 22, thereby evenly collecting wire rope 5 above roller 3, preventing wire rope 5 from being squeezed and tangled and affecting the lifting operation.

[0024] By activating servo motor 4 and servo motor 16, the roller 3 rotates to slowly retract the wire rope 5. At this time, servo motor 16 drives gear 15 to rotate, causing the rectangular plate 20 to move back and forth under the limit of the limiting plate 22, thereby evenly collecting the wire rope 5 above the roller 3. Compared with the traditional bridge crane with a crossbeam hook, this bridge crane with a crossbeam hook uses an auxiliary block 21 to assist in the release and retraction of the wire rope 5, thereby preventing the wire rope 5 from being squeezed and tangled, affecting the lifting operation, and making it easier to use.

[0025] Among them, a mounting block 7 is fixedly installed below the wire rope 5, a slot 8 is opened below the mounting block 7, a circular groove 9 is opened above the slot 8, and a slot 10 is opened at both ends of the circular groove 9. A mounting shaft 12 is movably installed inside the circular groove 9, and a locking block 13 located inside the slot 10 is fixedly installed on both sides of the mounting shaft 12. A hook 14 is fixedly installed below the mounting shaft 12, and a return spring 11 located inside the locking block 13 is elastically installed on the inner side of the circular groove 9.

[0026] When the hook 14 needs to be replaced, simply press the hook 14 upwards to move the mounting shaft 12 upwards inside the circular groove 9, causing the locking block 13 to disengage from the inside of the slot 10 and squeeze the return spring 11, causing the return spring 11 to deform. Then rotate the mounting shaft 12 to rotate the locking block 13 to the top of the slot 8. At this time, the return spring 11 releases its elastic potential energy to push the locking block 13 downwards, causing the mounting shaft 12 to disengage from the inside of the circular groove 9, thereby allowing the hook 14 to be removed for replacement.

[0027] By pressing the hook 14 upwards, the locking block 13 disengages from the slot 10 and compresses the return spring 11. Then, the mounting shaft 12 is rotated to rotate the locking block 13 above the slot 8. At this time, the return spring 11 releases its elastic potential energy to push the locking block 13 downwards, causing the mounting shaft 12 to disengage from the circular groove 9. Compared with the traditional under-beam hook of a bridge crane, this under-beam hook of a bridge crane can be quickly installed and replaced by pressing and rotating the hook 14 upwards, which is convenient to use.

[0028] Servo motor 16 is fixedly installed on the inner side of platform 1, and gear 15 is rotatably installed on the lower part of platform 1. The output end of servo motor 16 is fixedly connected to the inner side of gear 15, and gear 15 meshes with ring 17.

[0029] Start the servo motor 16, which drives the gear 15 to rotate. The gear 15 then drives the ring 17 to rotate, thereby assisting in the release and retraction of the wire rope 5.

[0030] Among them, a limiting groove 23 is opened at the bottom of the platform 1, a limiting rod 24 is fixedly installed inside the limiting groove 23, and a limiting plate 22 is movably sleeved on the outside of the limiting rod 24. The limiting plate 22 is fixedly connected to the outside of the rectangular plate 20.

[0031] The back-and-forth movement of the rectangular plate 20 causes the limiting plate 22 to move back and forth around the limiting rod 24 inside the limiting groove 23, thereby limiting the rectangular plate 20.

[0032] A fixing block 19 is fixedly installed below the circular block 18, and the fixing block 19 is located below the rectangular plate 20.

[0033] By installing the fixing block 19 below the circular block 18, the fixing block 19 limits the rectangular plate 20 and prevents it from loosening and falling off.

[0034] Among them, a telescopic spring 25 is elastically installed between the inner side of the limiting groove 23 and both sides of the limiting plate 22, and the telescopic spring 25 is movably sleeved on the outer side of the limiting rod 24.

[0035] The limiting plate 22 moves back and forth inside the limiting groove 23 to compress the telescopic spring 25, causing the telescopic spring 25 to deform, thereby assisting the limiting plate 22 in moving.

[0036] Among them, a servo motor 4 is fixedly installed on the outer side of the side plate 2, and the output end of the servo motor 4 is fixedly connected to the front side of the roller 3.

[0037] Start the servo motor 4, which drives the roller 3 to rotate. The rotation of the roller 3 slowly retracts the wire rope 5, thereby lifting the item.

[0038] Working principle and usage process of this utility model:

[0039] When using hook 14 to lift an object, first connect hook 14 to the object to be lifted, then start servo motor 14 and servo motor 2 16. Servo motor 14 drives roller 3 to rotate. The rotation of roller 3 slowly retracts wire rope 5, thereby lifting the object. At this time, servo motor 2 16 drives gear 15 to rotate. Gear 15 drives ring 17 to rotate. Ring 17 drives block 18 to make circular motion, so that rectangular plate 20 moves back and forth under the limit of limit plate 22, thereby evenly collecting wire rope 5 above roller 3, preventing wire rope 5 from being squeezed and tangled and affecting the lifting operation.

[0040] When the hook 14 needs to be replaced, simply press the hook 14 upwards to move the mounting shaft 12 upwards inside the circular groove 9, causing the locking block 13 to disengage from the inside of the slot 10 and squeeze the return spring 11, causing the return spring 11 to deform. Then rotate the mounting shaft 12 to rotate the locking block 13 to the top of the slot 8. At this time, the return spring 11 releases its elastic potential energy to push the locking block 13 downwards, causing the mounting shaft 12 to disengage from the inside of the circular groove 9, thereby allowing the hook 14 to be removed for replacement.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] 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 bridge crane with a lower crossbeam hook, comprising a platform (1), characterized in that: A side plate (2) is fixedly installed on the inner side of the platform (1). A circular roller (3) is rotatably installed on the inner side of the side plate (2). A circular ring (17) is rotatably installed on the lower part of the platform (1). A circular block (18) is fixedly installed on the lower part of the circular ring (17). A rectangular plate (20) is movably installed on the outer side of the circular block (18). An auxiliary block (21) is fixedly installed on the front side of the rectangular plate (20). A horizontal groove (6) is opened at the bottom of the platform (1). The horizontal groove (6) corresponds to the auxiliary block (21). A steel wire rope (5) is movably installed on the outer side of the side plate (2). The steel wire rope (5) corresponds to the auxiliary block (21).

2. The bridge crane with a lower crossbeam hook according to claim 1, characterized in that: A mounting block (7) is fixedly installed below the wire rope (5). A slot (8) is provided below the mounting block (7). A circular groove (9) is provided above the slot (8). A locking groove (10) is provided below both ends of the circular groove (9). A mounting shaft (12) is movably installed inside the circular groove (9). Locking blocks (13) located inside the locking groove (10) are fixedly installed on both sides of the mounting shaft (12). A hook (14) is fixedly installed below the mounting shaft (12). A return spring (11) located inside the locking block (13) is elastically installed on the inner side of the circular groove (9).

3. The bridge crane with a lower crossbeam hook according to claim 1, characterized in that: A servo motor 2 (16) is fixedly installed on the inner side of the platform (1), and a gear 1 (15) is rotatably installed on the lower side of the platform (1). The output end of the servo motor 2 (16) is fixedly connected to the inner side of the gear 1 (15), and the gear 1 (15) meshes with the ring (17).

4. The bridge crane with a lower crossbeam hook according to claim 1, characterized in that: A limiting groove (23) is provided below the platform (1). A limiting rod (24) is fixedly installed inside the limiting groove (23). A limiting plate (22) is movably sleeved on the outside of the limiting rod (24). The limiting plate (22) is fixedly connected to the outside of the rectangular plate (20).

5. A bridge crane with a lower crossbeam hook according to claim 1, characterized in that: A fixing block (19) is fixedly installed below the circular block (18), and the fixing block (19) is located below the rectangular plate (20).

6. A bridge crane with a lower crossbeam hook according to claim 4, characterized in that: A telescopic spring (25) is elastically installed between the inner side of the limiting groove (23) and both sides of the limiting plate (22), and the telescopic spring (25) is movably sleeved on the outer side of the limiting rod (24).

7. A bridge crane with a lower crossbeam hook according to claim 1, characterized in that: A servo motor (4) is fixedly installed on the outer side of the side plate (2), and the output end of the servo motor (4) is fixedly connected to the front side of the roller (3).

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