Hoisting anti-falling device

Abstract

The utility model discloses a hoisting anti-falling device which comprises an inclination adjusting mechanism and an anti-falling mechanism, the inclination adjusting mechanism is arranged on a big arm of an excavator, and the anti-falling mechanism is arranged on the upper side of the inclination adjusting mechanism; the inclination adjusting mechanism comprises a first connecting piece, a second connecting piece and a driving motor; according to the hoisting anti-disengaging device, stretching and retracting of a second telescopic rod and a first telescopic rod are adjusted, rotation of a first connecting block and a second connecting block is matched, a third connecting piece is made to be balanced as a whole according to actual requirements, and then a driving motor, a lead screw and a mechanical band-type brake are matched, so that the position of a fifth connecting piece is adjusted, and the hoisting position is adjusted; the balance of the excavator big arm is ensured, subsequent maintenance personnel can conveniently maintain, mount and dismount the excavator big arm, the maintenance efficiency and quality are improved, the balance state is kept, the connection part can be accurately aligned, the mounting error is reduced, and the mounting success rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of hoisting technology, specifically a hoisting anti-detachment device. Background Technology

[0002] In construction engineering, excavators are essential tools for earthmoving. However, excavators require regular maintenance. The boom, a key component of the excavator, is large and heavy, making it difficult to move to a suitable installation location manually; therefore, a tower crane is needed to lift and install it.

[0003] During the disassembly or installation of an excavator boom, tower crane wire ropes enable precise position control. Due to the boom's large size and heavy weight, it's difficult to place it accurately manually. Tower crane wire ropes, with their good flexibility and maneuverability, allow for fine-tuning of the boom in mid-air, ensuring accurate alignment with the excavator's main body, facilitating subsequent bolt installation or disassembly. However, because the excavator boom's structural position may change each time it stops working, resulting in a different center of gravity, maintaining its horizontal balance when using tower crane wire ropes for rigging is challenging. This can cause difficulties for subsequent manual maintenance and installation. Constantly fine-tuning with the tower crane wire ropes to solve the balance problem is time-consuming, leading to relatively low work efficiency. Furthermore, using ropes to hoist the excavator boom requires maintaining balance, and the rope binding is cumbersome. Limited by manual binding methods, the rope arrangement is complex, increasing the risk of the boom detaching due to operational errors, potentially causing damage.

[0004] Therefore, this utility model provides a hoisting anti-detachment device to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a hoisting anti-detachment device, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a hoisting anti-detachment device, comprising a tilt adjustment mechanism and an anti-detachment mechanism, wherein the tilt adjustment mechanism is mounted on the excavator boom and the anti-detachment mechanism is mounted on the upper side of the tilt adjustment mechanism;

[0007] The tilt adjustment mechanism includes a first connector, a second connector, and a drive motor. The first connector and the second connector are fixedly connected to the excavator boom by bolts. A mechanical brake is provided at the output end of the drive motor. A third connector is provided at the end of the mechanical brake away from the drive motor. A square groove is provided inside the third connector. A lead screw is provided at the end of the mechanical brake away from the drive motor.

[0008] The anti-fall-off mechanism includes a fifth connector and a hook. The fifth connector is provided with a hanging ear, which is connected to the hook. A limit rod is rotatably connected to the hook. A spring is provided at the connection between the limit rod and the hook. A second limit groove is provided at the bottom end of the fifth connector, and a first limit groove is provided at the side end of the fifth connector.

[0009] Preferably, the tilt adjustment mechanism further includes a first telescopic rod and a second telescopic rod, both of which are fixedly connected to the side ends of the first and second connecting members. The telescopic end of the first telescopic rod is fixedly connected to a second connecting block, and the telescopic end of the second telescopic rod is fixedly connected to a first connecting block.

[0010] Preferably, the first connecting block is rotatably connected to the side end of the third connecting member, and the second connecting block is rotatably connected to the side end of the third connecting member.

[0011] Preferably, the fifth connector is threaded onto the lead screw, and the fifth connector is disposed in a square groove, wherein a first limiting block, a second limiting block, and a fourth connector are disposed in the square groove.

[0012] Preferably, the second limiting block is slidably connected in the first limiting groove, and the fourth connecting member is slidably connected in the second limiting groove.

[0013] Preferably, the anti-fall mechanism further includes a rope connector, the hook is sleeved on the lower side of the rope connector, and a steel cable is wound and connected inside the rope connector.

[0014] Beneficial effects

[0015] This utility model provides a hoisting anti-derailment device. Compared with the prior art, it has the following advantages:

[0016] (1) A hoisting anti-detachment device, which adjusts the extension and retraction of the second telescopic rod and the first telescopic rod, and then cooperates with the rotation of the first connecting block and the second connecting block to keep the third connecting part in balance according to actual needs. Then, in conjunction with the drive motor, the lead screw and the mechanical brake, the position of the fifth connecting part is adjusted, the hoisting position is adjusted, and the hoisting position is adjusted to ensure the balance of the excavator boom. This facilitates the subsequent maintenance personnel to inspect, install and disassemble the excavator boom, improve the efficiency and quality of maintenance, and the balanced state helps to accurately align the connecting parts, reduce installation errors and improve the success rate of installation.

[0017] (2) A hoisting anti-detachment device, which uses a first limiting block, a second limiting block and a fourth connecting piece to cooperate with a first limiting groove and a second limiting groove, thereby improving the load-bearing capacity of the fifth connecting piece, making the stress distribution more uniform, extending the service life of the structure, and ensuring the stability of the overall structure under high load requirements.

[0018] (3) A hoisting anti-detachment device, which, in conjunction with a hook, a hook clip, a limit rod and a spring, facilitates quick connection and self-locking, prevents detachment, avoids damage to the excavator boom, and improves overall work efficiency. Attached Figure Description

[0019] Figure 1 This is a side view of the overall device structure of this utility model;

[0020] Figure 2 This is a structural diagram of the first and second connecting parts of this utility model;

[0021] Figure 3 This is a partial side view of the tilt adjustment mechanism of this utility model;

[0022] Figure 4 This is a side view of the fifth connector structure of this utility model;

[0023] Figure 5 This is an internal cross-sectional view of the anti-fall-off mechanism of this utility model.

[0024] In the picture: 1. Excavator boom;

[0025] Tilting adjustment mechanism: 21. First connecting piece; 22. Second connecting piece; 23. First telescopic rod; 24. Second telescopic rod; 25. First connecting block; 26. Second connecting block; 27. Third connecting piece; 28. Square groove; 29. ​​Lead screw; 291. Drive motor; 292. Mechanical brake;

[0026] Anti-fall-off mechanism: 31. First limiting block; 32. Second limiting block; 33. Fourth connecting piece; 34. Hanging ear; 35. Hook; 36. Limiting rod; 37. Rope connecting piece; 38. Steel cable; 39. Fifth connecting piece; 391. First limiting groove; 392. Second limiting groove. Detailed Implementation

[0027] 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.

[0028] Example 1: Please refer to Figure 1-5 A hoisting anti-detachment device includes a tilt adjustment mechanism and an anti-detachment mechanism. The tilt adjustment mechanism is installed on the excavator boom 1, and the anti-detachment mechanism is installed on the upper side of the tilt adjustment mechanism.

[0029] The tilt adjustment mechanism includes a first connecting member 21, a second connecting member 22, and a drive motor 291. The first connecting member 21 and the second connecting member 22 are fixedly connected to the excavator boom 1 by bolts. A mechanical brake 292 is provided at the output end of the drive motor 291. A third connecting member 27 is provided at the end of the mechanical brake 292 away from the drive motor 291. A square groove 28 is provided inside the third connecting member 27. A lead screw 29 is provided at the end of the mechanical brake 292 away from the drive motor 291.

[0030] The anti-fall mechanism includes a fifth connector 39 and a hook 35. The fifth connector 39 is provided with a hanging ear 34, which is connected to the hook 35. A limit rod 36 is rotatably connected to the hook 35. A spring is provided at the connection between the limit rod 36 and the hook 35. A second limit groove 392 is provided at the bottom end of the fifth connector 39, and a first limit groove 391 is provided at the side end of the fifth connector 39.

[0031] The tilt adjustment mechanism also includes a first telescopic rod 23 and a second telescopic rod 24. The first telescopic rod 23 and the second telescopic rod 24 are both fixedly connected to the side ends of the first connector 21 and the second connector 22. The telescopic end of the first telescopic rod 23 is fixedly connected to a second connecting block 26, and the telescopic end of the second telescopic rod 24 is fixedly connected to a first connecting block 25.

[0032] The first connecting block 25 is rotatably connected to the side end of the third connecting member 27, and the second connecting block 26 is rotatably connected to the side end of the third connecting member 27.

[0033] The fifth connector 39 is threaded onto the lead screw 29 and is located in the square groove 28. The square groove 28 contains the first limiting block 31, the second limiting block 32, and the fourth connector 33.

[0034] The second limiting block 32 is slidably connected within the first limiting groove 391, and the fourth connecting piece 33 is slidably connected within the second limiting groove 392.

[0035] The anti-fall mechanism also includes a rope connector 37, with a hook 35 sleeved on the lower side of the rope connector 37, and a steel cable 38 wound and connected inside the rope connector 37.

[0036] Working process: When the center of gravity of the excavator boom 1 shifts during disassembly, the extension and retraction of the second telescopic rod 24 and the first telescopic rod 23 are adjusted, and the rotation of the first connecting block 25 and the second connecting block 26 are coordinated to keep the third connecting piece 27 balanced according to actual needs. Then, by starting the drive motor 291, the lead screw 29 rotates, causing the fifth connecting piece 39 to move along the square groove 28, thereby adjusting the position of the fifth connecting piece 39. Once the position is determined, the mechanical brake 292 is used to self-lock the rotation of the lead screw 29, and the position is adjusted according to the shift of the center of gravity of the excavator boom 1 structure, achieving precise balance adjustment. This ensures the balance of the excavator boom 1, facilitating subsequent maintenance personnel to inspect, install, and disassemble the excavator boom 1, improving maintenance efficiency and quality. Maintaining a balanced state helps to accurately align the connection parts, reduce installation errors, and increase the success rate of installation.

[0037] By using the first limiting block 31, the second limiting block 32 and the fourth connecting member 33 set in the square groove 28, in conjunction with the first limiting groove 391 and the second limiting groove 392 set on the fifth connecting member 39, the load-bearing capacity of the fifth connecting member 39 is improved, the stress distribution is made more uniform, the service life of the structure is extended, and the stability of the overall structure under high load requirements is guaranteed.

[0038] The lug 34 and hook 35 are snapped together by a limiting rod 36 and a spring, which ensures that the hook 35 and lug 34 do not fall off, making it easy to connect quickly and preventing them from falling off, thus avoiding damage to the excavator boom 1.

[0039] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0040] 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.

[0041] 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 hoisting anti-drop device, characterized in that, The application relates to a tilt adjusting mechanism and an anti-falling mechanism, wherein the tilt adjusting mechanism is arranged on a large arm (1) of an excavator, and the anti-falling mechanism is arranged on the upper side of the tilt adjusting mechanism. The tilt adjusting mechanism comprises a first connecting piece (21), a second connecting piece (22) and a driving motor (291), the first connecting piece (21) and the second connecting piece (22) are fixedly connected on the large arm (1) of the excavator through bolts, the mechanical brake (292) is arranged at the output end of the driving motor (291), a third connecting piece (27) is arranged at the end of the mechanical brake (292) away from the driving motor (291), a square groove (28) is arranged in the third connecting piece (27), and a lead screw (29) is arranged at the end of the mechanical brake (292) away from the driving motor (291). The anti-falling mechanism comprises a fifth connecting piece (39) and a hook (35), the fifth connecting piece (39) is provided with a hanging lug (34), the hanging lug (34) is connected with the hook (35) through hooking, the hook (35) is rotatably connected with a limiting rod (36), the limiting rod (36) is provided with a spring at the connecting position with the hook (35), the bottom end of the fifth connecting piece (39) is provided with a second limiting groove (392), and the side end of the fifth connecting piece (39) is provided with a first limiting groove (391).

2. The anti-drop device of claim 1, wherein: The tilt adjusting mechanism further comprises a first telescopic rod (23) and a second telescopic rod (24), the first telescopic rod (23) and the second telescopic rod (24) are fixedly connected at the side ends of the first connecting piece (21) and the second connecting piece (22), the telescopic end of the first telescopic rod (23) is fixedly connected with a second connecting block (26), and the telescopic end of the second telescopic rod (24) is fixedly connected with a first connecting block (25).

3. The anti-drop device of claim 2, wherein: The first connecting block (25) is rotatably connected at the side end of the third connecting piece (27), and the second connecting block (26) is rotatably connected at the side end of the third connecting piece (27).

4. The anti-drop device according to claim 1 or 3, characterized in that: The fifth connecting piece (39) is screw-connected on the lead screw (29), the fifth connecting piece (39) is arranged in the square groove (28), and the square groove (28) is provided with a first limiting block (31), a second limiting block (32) and a fourth connecting piece (33).

5. The anti-drop device according to claim 4, characterized in that: The second limiting block (32) is slidably connected in the first limiting groove (391), and the fourth connecting piece (33) is slidably connected in the second limiting groove (392).

6. A load prevention device according to claim 5, wherein: The anti-falling mechanism further comprises a rope connecting piece (37), the hook (35) is sleeved at the lower side of the rope connecting piece (37), and the rope connecting piece (37) is provided with a steel cable (38) wound and connected therein.

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