Hook bridge crane

Abstract

The utility model relates to the technical field of bridge cranes, in particular to a hook bridge crane which comprises two symmetrically arranged racks, bridge frames with walking mechanisms are symmetrically arranged on the racks, hoisting mechanisms are symmetrically arranged on the bridge frames, each hoisting mechanism comprises a trolley frame moving on the corresponding bridge frame, and an electric hoist and a fixing part are arranged on each trolley frame. A pull rope on the electric hoist is connected with the fixing part, a lifting hook is arranged on the pull rope, an anti-shaking assembly is arranged between the trolley frame and the lifting hook, and an anti-disengaging assembly is arranged in the anti-shaking assembly. Compared with the prior art, the anti-falling device has the advantages that the fixed group and the movable group in the anti-falling component are matched to rigidly and vertically limit the lifting hook and the pull rope in the process of descending or lifting an object, so that shaking is avoided, the object is prevented from being unhooked, the safety is greatly improved, and the anti-falling device is more practical.

Description

Technical Field

[0001] This utility model relates to the field of bridge crane technology, and in particular to a hook bridge crane. Background Technology

[0002] Bridge cranes are essential material handling equipment widely used in industrial fields. Their structure mainly consists of a bridge spanning the factory building (main beam and end beams), a lifting trolley moving along the bridge track, a hoisting mechanism, a trolley traveling mechanism, and an electrical control system. Their core function is to achieve precise material handling through coordinated movement in three-dimensional space (trolley longitudinal movement, trolley lateral movement, and spreader lifting), covering a rectangular working area. They are core equipment in manufacturing, metallurgy, ports, warehousing, and other fields.

[0003] Existing technology publication number CN219689158U discloses a hook bridge crane, including an end beam, a walkway, a lifting trolley, a lifting rope, and a hook mounted on the crane body. The lifting trolley has multiple rollers at its bottom, and a guide rail is provided at the top of the walkway. The side walls of the lifting trolley are equipped with a lubrication mechanism for automatically lubricating the guide rails, and a cleaning mechanism for automatically cleaning the guide rails. The lubrication mechanism includes multiple symmetrically arranged support plates fixedly connected to the side walls of the lifting trolley. This hook bridge crane can automatically spray lubricating oil onto the surface of the guide rails for lubrication while the lifting trolley is moving, and simultaneously automatically clean the surface of the guide rails, making lubrication and cleaning of the guide rails more convenient and faster. This results in more stable and smooth movement of the lifting trolley, reduces noise during trolley movement, and makes the hook more stable and reliable during lifting.

[0004] However, the existing technology still has certain shortcomings in its use: In real life, cranes are similar to the existing technology described above. The electric hoist has a hook on its hoisting rope, which holds the object to be moved. However, during the hoisting process, the hoisting rope, hook, and object will sway to varying degrees due to inertia or external environmental factors such as wind. If the swaying is large, the object may fall off the hook. If the swaying is small, the landing point may be inaccurate. Furthermore, the swaying of the suspended object can easily cause harm to the workers below, resulting in a low level of safety. Therefore, the existing technology needs to be further improved. Utility Model Content

[0005] The purpose of this invention is to provide a hook bridge crane that can effectively prevent swaying during the lifting of objects.

[0006] The present invention adopts the following technical solution: a hook bridge crane, comprising two symmetrically arranged frames, a bridge frame with a traveling mechanism symmetrically arranged on the frames, and a hoisting mechanism symmetrically arranged on the bridge frame. The hoisting mechanism includes a trolley frame that moves on the bridge frame, an electric hoist and a fixing part on the trolley frame, a pull rope on the electric hoist connected to the fixing part and a hook on the pull rope, an anti-sway component between the trolley frame and the hook, and an anti-detachment component inside the anti-sway component.

[0007] Optionally, the anti-sway assembly includes a fixed group and a movable group, with the movable group slidingly engaging with the fixed group. The fixed group is located on the bottom surface of the cable tray, and the movable pulley is located at the bottom end of the movable group.

[0008] Optionally, the fixing assembly includes a sleeve with a connector at the upper end, the connector being fixed to the bottom surface of the trolley frame, an annular part being provided on the outer side of the lower end of the sleeve, and a connector being provided at the bottom end of the sleeve, the connector being fixedly connected to the annular part.

[0009] Optionally, several reinforcing ribs are welded between the connector and the sleeve, and between the annular part and the sleeve.

[0010] Optionally, the movable assembly includes a sleeve two with a diameter smaller than that of sleeve one. Two limiting rings one are spaced apart on the outer side of the top of sleeve two and slide in contact with the inner wall of sleeve one. The bottom surface of the connector two has a through hole that is adapted to the outer diameter of sleeve two and is slidably fitted. A sealing plate is provided at the bottom of sleeve two. A bracket one is provided on the top surface of the sealing plate inside sleeve two. A movable pulley is rotatably mounted on the bracket one. A bracket two is fixedly mounted on the bottom surface of the sealing plate. A hook is connected to the bracket two.

[0011] Optionally, an annular buffer pad is provided on the top surface of the sealing plate outside the second sleeve.

[0012] Optionally, the anti-detachment component includes a wedge-shaped ring disposed on the inner wall of the lower end of the sleeve, the inclined surface of the wedge-shaped ring being downward and inward, and the lower end of the limiting ring having a chamfer adapted to the inclined surface of the wedge-shaped ring.

[0013] Optionally, the anti-detachment component also includes several rods. The top surface of the lower limiting ring is provided with several cylindrical grooves that penetrate the chamfered slope. Several rods slide in the cylindrical grooves at corresponding positions. A limiting ring is provided on the rod. A spring is fixedly provided between the limiting ring and the limiting ring. Several E-shaped sliders that can be horizontally pushed out by the rods and can be reset into the limiting ring are provided in the upper limiting ring.

[0014] Optionally, when the spring is at its original length, the lower end of the rod extends out of the chamfered surface.

[0015] Optionally, the outer surface of the E-type slider is set as an arc surface that is compatible with the limiting ring, and the arc surface of the E-type slider is provided with several anti-slip textures.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] 1. In this application, an anti-sway component is provided between the hook, the pull rope, and the electric hoist. Through the cooperation of the first sleeve and the second movable sleeve in the anti-sway component, the hook and pull rope are rigidly positioned, thereby effectively preventing the hook, pull rope, and object from swaying due to inertia or external factors during the hoisting process. This not only improves the stability and accuracy of the crane during the hoisting process, but also greatly enhances the safety during the hoisting process. The design is reasonable and more practical.

[0018] 2. In this application, an anti-detachment component is provided between sleeve one and sleeve two. Through the cooperation of the wedge ring, limit ring one, rod and E-type slider in the anti-detachment component, sleeve two can be effectively prevented from detaching from sleeve one. This effectively avoids damage to the workers or other equipment below caused by the pull rope breaking due to old age or other reasons. This further improves the safety of the device and makes it more practical. Attached Figure Description

[0019] Figure 1 This is the overall attempt at this utility model;

[0020] Figure 2 This is a top view of the entire utility model;

[0021] Figure 3 This is a direct attempt at the hoisting mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the anti-sway component of this utility model;

[0023] Figure 5 This is a cross-sectional structural diagram of the anti-sway component of this utility model;

[0024] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A;

[0025] Figure 7 This utility model Figure 5 Enlarged structural diagram at point B;

[0026] Figure 8 This is a cross-sectional structural diagram of some parts of the anti-detachment component of this utility model;

[0027] Figure 9 This is a partial cross-sectional structural diagram of the anti-sway component of this utility model in its extended state;

[0028] In the diagram: 1. Frame; 2. Cable tray; 3. Traveling mechanism; 4. Lifting mechanism; 5. Trolley frame; 6. Electric hoist; 7. Limiting part; 8. Fixed pulley; 9. Fixing part; 10. Moving pulley; 11. Hook; 12. Anti-sway assembly; 13. Sleeve 1; 14. Connector 1; 15. Ring part; 16. Connector 2; 17. Reinforcing rib; 18. Sleeve 2; 19. Limiting ring 1; 20. Sealing plate; 21. Bracket 1; 22. Annular buffer pad; 23. Bracket 2; 24. Anti-detachment assembly; 25. Wedge ring; 26. Chamfer; 27. Rod; 28. Columnar groove 1; 29. ​​Limiting ring 2; 30. Spring 1; 31. Columnar groove 2; 32. E-groove; 33. E-slider; 34. Spring 2; 35. Anti-slip texture. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only a part of the embodiments disclosed in this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Various non-limiting embodiments of this utility model are described in detail below. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0031] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0032] Please see Figure 1-9The present invention will now be described in detail with reference to the accompanying drawings and embodiments: A hook bridge crane includes two symmetrically arranged frames 1, with bridge frames 2 symmetrically arranged on the two side frames 1. Traveling mechanisms 3 are provided at both ends of the bridge frames 2, allowing the bridge frames 2 to move forward and backward on the frames 1. Lifting mechanisms 4 are symmetrically arranged on the two bridge frames 2. Each lifting mechanism 4 includes a trolley frame 5 that moves left and right on the bridge frames 2. An electric hoist 6, a limiting part 7, a fixed pulley 8, and a fixing part 9 are fixedly mounted on the top surface of the trolley frame 5. One end of the pull rope on the electric hoist 6 is sequentially fitted onto the fixed pulley 8 and the limiting part 7, and finally the end of the pull rope is fixed to the fixing part 9. The pull rope between the limiting part 7 and the fixing part 9 is connected by a movable pulley 10. The movable pulley 10 is located below the bridge frame 2 and directly below the limiting part 7 and the fixing part 9. A hook 11 is provided below the movable pulley 10. The fixed pulley 8 not only straightens the pull rope, making the movement of the pull rope more orderly, but also guides the pull rope smoothly, reduces friction during the movement of the pull rope, and improves the service life of the pull rope. The limiting part 7 limits the pull rope in the vertical direction, ensuring the stability of the pull rope's movement in the vertical direction. The traveling mechanism 3, the trolley frame 5, the electric hoist 6, the limiting part 7, and the fixing part 9 mentioned above are all existing conventional technologies and will not be described in detail here.

[0033] When a part or object needs to be moved and repaired, the traveling mechanism 3 is activated to move the cable tray 2 and the hoisting mechanism 4 on the cable tray 2 in the front-to-back direction. Then, the trolley frame 5 in the hoisting mechanism 4 is activated to move the trolley frame 5 in the left-to-right direction on the cable tray 2, thereby allowing the hook 11 to move to any position on the horizontal plane. Then, the electric hoist 6 is activated to unwind the hook 11, which gradually moves it toward the ground or toward the part or object. Then, the hook 11 is connected to the part or object, and the electric hoist 6 is activated to rewind the hook, thereby gradually lifting the part or object. Finally, the part or object is moved to the required position by the trolley frame 5 and the traveling mechanism 3.

[0034] Please see Figure 1-3 An anti-sway assembly 12 is provided between the hoisting mechanism 4 and the hook 11. The anti-sway assembly 12 includes a fixed group and a movable group. The movable group and the fixed group are slidably engaged. The fixed group is located on the bottom surface of the cable tray 2, and the movable pulley 10 is located at the bottom end of the movable group.

[0035] Please see Figure 4 The fixing assembly includes a sleeve 13, with a connector 14 fixedly installed at the upper end of the sleeve 13. The connector 14 is fixed to the bottom surface of the trolley frame 5 by bolts. The sleeve 13 is located directly below and communicates with the fixing part 9 and the limiting part 7. An annular part 15 is fixedly installed on the outer side of the lower end of the sleeve 13. A connector 2 16 is installed at the bottom end of the sleeve 13. The connector 2 16 is fixedly connected to the annular part 15 by bolts.

[0036] Please see Figure 4 Several reinforcing ribs 17 are welded between the connector 14 and the sleeve 13, and between the annular part 15 and the sleeve 13.

[0037] Please see Figure 5-7 The movable assembly includes a second sleeve 18, the diameter of which is smaller than that of the first sleeve 13. Two limiting rings 19 are spaced apart on the outer side of the top of the second sleeve 18. The outer walls of the two limiting rings 19 slide in contact with the inner wall of the first sleeve 13. The bottom surface of the second connector 16 has a through hole that is adapted to the outer diameter of the second sleeve 18 and slides in fit. A circular sealing plate 20 is fixedly installed at the bottom of the second sleeve 18. A bracket 21 is fixedly installed on the top surface of the sealing plate 20 inside the second sleeve 18. The movable pulley 10 is rotatably mounted on the bracket 21, so that the pull rope between the limiting part 7 and the fixed part 9 is inside the second sleeve 18, thereby reducing the contact between the pull rope and the external dust, effectively ensuring the lubrication of the pull rope, ensuring the service life of the pull rope, and reducing the number of maintenance.

[0038] Please see Figure 4 An annular buffer pad 22 is fixedly installed on the top surface of the sealing plate 20 outside the sleeve 2 18. The annular buffer pad 22 can prevent collision between the connecting plate 2 and the sealing plate 20 and improve the service life of the parts.

[0039] Please see Figure 4 A bracket 23 is fixedly installed on the bottom surface of the sealing plate 20, and the hook 11 is connected to the bracket 23.

[0040] By coordinating the fixed and movable groups, the hook 11 and the rope are always rigidly vertically restricted by the movable and fixed groups during the rising or falling process, which avoids swaying when the object is lifted, and thus prevents the object from falling off the hook 11 due to swaying. This greatly improves the safety when moving objects, and the design is more reasonable and practical.

[0041] Please see Figure 5-7 The anti-sway component 12 is equipped with an anti-detachment component 24. The anti-detachment component 24 includes a wedge-shaped ring 25 disposed on the inner wall of the lower end of the sleeve 13, and the wedge-shaped ring 25 is located between the sleeve 13 and the sleeve 28. The inclined surface of the wedge-shaped ring 25 is downward and inward. The lower end of the limiting ring 19 below is provided with a chamfer 26 that is adapted to the inclined surface of the wedge-shaped ring 25. Through the cooperation between the chamfer 26 on the limiting ring 19 and the inclined surface of the wedge-shaped ring 25, when the limiting ring 19 below the sleeve 13 contacts the wedge-shaped ring 25, the sleeve 28 is connected to the sleeve 13 more tightly as it goes down, thereby preventing the sleeve 13 from slipping off the sleeve 13 due to accidental and rapid slippage, and thus preventing the sleeve 28 from falling off and causing damage to surrounding workers or objects.

[0042] Please see Figure 7-8 The anti-detachment component 24 also includes several rods 27. The top surface of the lower limiting ring 19 is provided with several cylindrical grooves 28 that penetrate the chamfered surface 26. Several rods 27 slide in the corresponding cylindrical grooves 28. A limiting ring 29 is fixedly provided on the rod 27. A spring 30 is fixedly provided between the limiting ring 29 and the limiting ring 19. Several E-shaped sliders 33 that can be horizontally pushed out by the rods 27 and can be reset into the limiting ring 19 are provided in the upper limiting ring 19.

[0043] Specifically, the bottom surface of the upper limiting ring 19 is provided with several cylindrical grooves 31 corresponding to the position of the cylindrical groove 28. Both ends of the rod 27 are provided with inclined surfaces. The inclined surface at the upper end of the rod 27 is located in the cylindrical groove 31. An E-shaped groove 32 is provided at the position of the cylindrical groove 31. The E-shaped groove 32 is perpendicular to the cylindrical groove 31, and the middle groove of the E-shaped groove 32 is connected to the cylindrical groove 31. An E-shaped slider 33 is slidably arranged in the E-shaped groove 32. Springs 34 are fixedly arranged between the protrusions on both sides of the E-shaped slider 33 and the inner wall of the E-shaped groove 32. The protruding end in the middle of the E-shaped slider 33 abuts against the inclined surface at the upper end of the rod 27.

[0044] Furthermore, when spring 1 30 is in its original length state, the lower end of rod 27 extends out of the chamfered face 26, while spring 2 34 is also in its original length state, and E-type slider 33 is completely within E-type groove 32.

[0045] Furthermore, the outer surface of the E-type slider 33 is set as an arc surface that adapts to the limiting ring 19.

[0046] Please see Figure 8 The E-type slider 33 has several anti-slip textures 35 on its curved surface.

[0047] When the lower limiting ring approaches the wedge ring 25, the lower end of the rod 27 will first contact the inclined surface of the wedge ring 25. Then the rod 27 is pushed upward, and the upward movement of the rod 27 causes the upper inclined surface of the rod 27 to push the E-shaped slider 33 along the E-shaped groove 32 towards the inner wall of the sleeve 13, and finally make full contact with the inner wall of the sleeve 13, thereby playing an outward squeezing role to slow down the fall of the sleeve 2 18. In this way, it works with the wedge ring 25 and the limiting ring to achieve a double anti-detachment measure, further ensuring that the sleeve 13 will not slip off the sleeve 13 due to accidental rapid slippage, and further preventing the sleeve 2 18 from falling off and causing damage to surrounding workers or objects.

[0048] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the present invention.

[0049] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A hook suspension bridge crane, characterized in that: The device comprises two racks symmetrically arranged, a bridge with a walking mechanism symmetrically arranged on the racks, a hoisting mechanism symmetrically arranged on the bridge, a trolley moving on the bridge, an electric hoist and a fixing part arranged on the trolley, a pull rope connected with the fixing part and provided with a hook, an anti-shaking assembly arranged between the trolley and the hook, and an anti-falling assembly arranged in the anti-shaking assembly.

2. A hook-bridge crane according to claim 1, characterised in that: The anti-shaking assembly comprises a fixed group and a moving group, the moving group is in sliding fit with the fixed group, and the fixed group is arranged on the bottom surface of the bridge.

3. The hook-bridge crane according to claim 2, characterized in that: The fixed group comprises a sleeve one provided with a connecting piece one at the upper end, the connecting piece one is fixed to the bottom surface of the trolley, an annular piece is arranged on the outer side of the lower end of the sleeve one, the sleeve one is provided with a connecting piece two at the bottom end, and the connecting piece two is fixed to the annular piece.

4. A hook-bridge crane according to claim 3, characterised in that: A plurality of reinforcing ribs are welded between the connecting piece one and the sleeve one and between the annular piece and the sleeve one.

5. A hook-bridge crane according to claim 2, characterised in that: The moving group comprises a sleeve two with a smaller diameter than the sleeve one, two limiting rings one are arranged at the top end of the outer side of the sleeve two in a spaced manner and in sliding contact with the inner wall of the sleeve one, a through hole is formed in the bottom surface of the connecting piece two and in sliding fit with the outer diameter of the sleeve two, the sleeve two is provided with an end plate at the bottom end, the top surface of the end plate in the sleeve two is provided with a support one, the movable pulley is rotatably arranged on the support one, the bottom surface of the end plate is fixedly provided with a support two, and the hook is connected to the support two.

6. A hook-bridge crane according to claim 5, characterised in that: The top surface of the end plate outside the sleeve two is provided with an annular buffer pad.

7. The hook-bridge crane of claim 1, characterized by: The anti-falling assembly comprises a wedge-shaped ring arranged on the inner wall of the lower end of the sleeve one, the inclined surface of the wedge-shaped ring is inclined downward and inward, and the lower limiting ring one is provided with a chamfered corner in the lower end and in fit with the inclined surface of the wedge-shaped ring.

8. A hook-bridge crane according to claim 7, characterised in that: The anti-falling assembly further comprises a plurality of rod pieces, a plurality of cylindrical grooves one are formed in the top surface of the lower limiting ring one and penetrating the inclined surface of the chamfered corner, the plurality of rod pieces are respectively slid in the corresponding cylindrical grooves one, a limiting ring two is arranged on the rod piece, a spring one is fixed between the limiting ring two and the limiting ring one, and a plurality of E-shaped sliders are arranged in the upper limiting ring one and capable of being horizontally ejected from the limiting ring one and returned to the limiting ring one.

9. A hook-bridge crane according to claim 8, characterised in that: When the spring one is in the original length state, the lower end of the rod piece extends out of the inclined surface of the chamfered corner.

10. A hook-bridge crane according to claim 8, characterised in that: The outer side surface of the E-shaped slider is provided with an arc surface in fit with the limiting ring one, and a plurality of anti-slip lines are arranged on the arc surface of the E-shaped slider.

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