Anti-unraveling device

Abstract

The utility model relates to a kind of anti-escape rope devices, including lifting lug, rope groove installed on lifting lug, the two sides of the rope groove are respectively equipped with rope baffle and rope baffle rotating plate;The side of the rope groove is equipped with positioning locking hole and the first limiting hole and the second limiting hole vertically arranged, first limiting post and second limiting post are respectively arranged in the first limiting hole and the second limiting hole;Rope baffle rotating plate is equipped with τ-shaped through-hole slot, first positioning hole and second positioning hole;First limiting post and second limiting post are movably embedded in the through-hole slot;First positioning hole, second positioning hole are connected with the positioning locking hole by locking bolt respectively, corresponding the two kinds of states of rope baffle and rope exit of rope baffle rotating plate.The utility model is simple in structure, and rope baffle and rope exit switching are simple, low in cost, and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to an anti-rope slippage device, belonging to the technical field of hoisting equipment. Background Technology

[0002] A lifting lug is a device fixed to the end face of the object being lifted, connecting the lifting equipment's slings or rope loops. It is a load-bearing component during the lifting process, and the slings or rope loops need to be secured to the lifting lug during connection. The greater the lifting weight, the larger the diameter of the slings or rope loops, so they cannot be knotted like ordinary ropes. They need to be tightened using steel hoops or clips. After tightening, the slings or rope loops are secured by the friction provided by the tightening. If the bolts providing the tightening force loosen or are not properly tightened, the slings or rope loops can easily come loose, causing a hazard.

[0003] When hoisting heavy objects, slings or rope loops cannot be directly connected to the lifting lugs. Generally, dedicated rope grooves are installed on the lifting lugs to connect with the slings or rope loops and withstand the greater lifting force. During the hoisting process, appropriate anti-derailment devices must be installed on the lifting lugs to prevent the slings or rope loops from accidentally slipping out of the rope grooves under stress, thus preventing safety risks. To ensure good anti-derailment effectiveness and improve safety, existing anti-derailment devices are often complex in structure, expensive to manufacture, and involve complicated switching between the rope-blocking and rope-exiting states. Changing slings or rope loops is time-consuming, labor-intensive, and inefficient.

[0004] Therefore, there is an urgent need for an anti-rope slippage device that is simple in structure, easy to switch between rope blocking and rope exiting, low in cost, and easy to maintain. Summary of the Invention

[0005] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide an anti-rope slippage device with simple structure, easy switching between rope blocking and rope exiting, low cost, and convenient maintenance.

[0006] The purpose of this utility model is achieved as follows:

[0007] A rope-prevention device includes a lifting lug fixed to the suspended object, a rope groove mounted on the lifting lug via a pin, and a rope-blocking plate and a rope-blocking rotating plate respectively installed on both sides of the rope groove; the rope groove, the rope-blocking plate and the rope-blocking rotating plate enclose a closed space to prevent the sling from coming out of the rope groove.

[0008] One side of the rope groove is provided with a positioning and locking hole and a vertically arranged first limiting hole and second limiting hole, and a first limiting post and a second limiting post are respectively provided in the first limiting hole and the second limiting hole.

[0009] The rope-blocking rotating plate is provided with a τ-shaped through-hole groove, a first positioning hole, and a second positioning hole;

[0010] Both the first limiting post and the second limiting post are movably embedded in the through hole groove; the first positioning hole and the second positioning hole are respectively connected to the positioning locking hole by locking bolts, corresponding to the two states of the rope blocking and rope exiting of the rope blocking rotating plate.

[0011] Furthermore, the lifting lug has a single-ear plate structure, and two sets of anti-derailment devices are symmetrically arranged on both sides of the single-ear plate of the lifting lug, with the rope grooves of the two sets of anti-derailment devices installed on the same heel pin.

[0012] Furthermore, the positioning locking hole and the first limiting hole are at the same horizontal level.

[0013] Furthermore, the rope-blocking plate is fitted onto the pin using a through hole provided on its top.

[0014] Furthermore, the lower part of the rope-blocking plate has an L-shaped structure, forming a closed space with the rope-blocking plate and the rope groove to prevent rope slippage.

[0015] Furthermore, the rope-guarding rotating plate is fixedly equipped with a handle for convenient rotation operation.

[0016] Furthermore, the rotation angle of the rope-blocking rotating plate between the rope-blocking and rope-exiting states is 90°.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention features a rope-blocking plate and a rope-blocking rotating plate on both sides of the rope groove, forming a closed anti-rope-detachment space. The rope-blocking rotating plate rotates along the τ-shaped through-hole groove to open and close the rope-blocking space. The switching between the rope-blocking and rope-out states is flexible and convenient. The device has a simple structure, low cost, and is easy to replace slings or rope loops, thus improving maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an anti-rope slippage device according to the present invention.

[0020] Figure 2 This is a side view of the rope groove of an anti-rope slippage device according to the present invention.

[0021] Figure 3 This is a schematic diagram of the rope-blocking rotating plate structure of an anti-rope slippage device according to this utility model.

[0022] Figure 4 This is a side view of the rope-blocking state of an anti-rope-detachment device according to the present invention.

[0023] Figure 5 This is a side view of the rope-out state of an anti-rope-detachment device according to the present invention.

[0024] in:

[0025] 1. Lifting object; 2. Lifting lug; 3. Pin; 4. Rope groove; 5. Rope guard plate; 6. Rope guard rotating plate; 7. Handle; 8. Lifting strap;

[0026] Positioning locking hole 41, first limiting hole 42, second limiting hole 43, first limiting post 44, second limiting post 45, locking bolt 46, through hole groove 61, first positioning hole 62, second positioning hole 63, straight groove 64, curved groove 65. Detailed Implementation

[0027] See Figures 1-5 The present invention relates to an anti-rope slippage device, comprising a lifting lug 2 fixedly mounted on the suspended object 1, and a rope groove 4 mounted on the lifting lug 2 via a pin 3; a rope-blocking plate 5 and a rope-blocking rotating plate 6 are respectively installed on the two sides of the rope groove 4; the rope groove 4, the rope-blocking plate 5 and the rope-blocking rotating plate 6 enclose a closed space to prevent the sling 8 from slipping out of the rope groove 4.

[0028] In this embodiment, the lifting lug 2 is a single lug plate structure. Two sets of anti-rope slippage devices are symmetrically arranged on both sides of the single lug plate of the lifting lug 2. The rope grooves 4 of the two sets of anti-rope slippage devices are installed on the same follow pin 3.

[0029] The rope-blocking plate 5 has an L-shaped structure with a through hole at the top for mounting on the pin 3. The lower L-shaped plate, the rope-blocking plate 5, and the rope groove 4 form a closed space to prevent rope slippage.

[0030] One side of the rope groove 4 is provided with a positioning locking hole 41 and a vertically arranged first limiting hole 42 and second limiting hole 43. A first limiting post 44 and a second limiting post 45 are respectively provided in the first limiting hole 42 and the second limiting hole 43. The positioning locking hole 41 and the first limiting hole 42 are at the same horizontal height, that is, the positioning locking hole 41 and the first limiting post 44 are at the same height. In this embodiment, the positioning locking hole 41, the first limiting hole 42 and the second limiting hole 43 are all threaded holes, and the first limiting post 44 and the second limiting post 45 are all bolts.

[0031] The rope-blocking rotating plate 6 is provided with a τ-shaped through-hole groove 61, a first positioning hole 62 and a second positioning hole 63; the τ-shaped structure of the through-hole groove 61 is divided into two connected sections, one section is a vertical straight groove 64 and the other section is a curved groove 65 connected to the middle of the straight groove 64; a handle 7 for convenient rotation operation is fixed on the rope-blocking rotating plate 6.

[0032] The first limiting post 44 and the second limiting post 45 are both movably embedded in the through-hole groove 61. To facilitate the rotation of the rope-blocking rotating plate 6, the bolts of the first limiting post 44 and the second limiting post 45 cannot be completely tightened and locked. That is, the distance between the bolt nut and the rope groove 4 should be greater than the thickness of the rope-blocking rotating plate 6, leaving sufficient room for movement. The first positioning hole 62 and the second positioning hole 63 are respectively connected to the positioning locking hole 41 by locking bolts 46, corresponding to the two states of the rope-blocking rotating plate 6: rope blocking and rope exiting.

[0033] Rope-blocking state: The first limiting post 44 and the second limiting post 45 are both located in the straight groove 64 on the rope-blocking rotating plate 6, which has a τ-shaped through hole groove 61. The first positioning hole 62 and the positioning locking hole 41 are connected by locking bolts 46. At this time, the rope-blocking rotating plate 6 is in a vertical state, and its bottom and the L-shaped plate at the bottom of the rope-blocking plate 5 form a closed rope-blocking space to achieve the function of preventing rope slippage.

[0034] Rope Out Position: When it is necessary to replace the sling 8, first loosen the locking bolt 46, operate the handle 7 to slide the rope-blocking rotating plate 6 vertically upward until the second limit post 45 abuts against the bottom of the straight groove 64. At this time, the first limit post 44 is located at the connection between the middle of the straight groove 64 and the curved groove 65. Continue to operate the handle 7 to rotate the rope-blocking rotating plate 6 clockwise, so that the first limit post 44 slides into the curved groove 65 until the second positioning hole 63 is aligned with the positioning locking hole 41. At this time, the rope-blocking rotating plate 6 has rotated 90° clockwise and is in a horizontal state, and the closed space for preventing rope slippage is opened. Then, screw the locking bolt 46 into the second positioning hole 63 and the positioning locking hole 41 to fix the position of the rope-blocking rotating plate 6 in the rope-out position, which is convenient for replacing the new sling 8.

[0035] This utility model utilizes the sliding limit of the first limiting post 44 and the second limiting post 45 within the τ-shaped through-hole groove 61 to achieve flexible switching between the rope-blocking and rope-exiting states of the rope-blocking rotating plate 6. It has a simple structure, is easy to operate, and greatly improves the work efficiency when changing the sling 8.

[0036] Additionally, it should be noted that the above-described specific implementation is merely an optimized solution of this patent, and any modifications or improvements made by those skilled in the art based on the above concept are within the scope of protection of this patent.

Claims

1. A rope-prevention device comprising a lifting lug (2) fixed to a suspended object (1), and a rope groove (4) mounted on the lifting lug (2) via a pin (3), characterized in that: The rope groove (4) is equipped with a rope-blocking plate (5) and a rope-blocking rotating plate (6) on both sides respectively; the rope groove (4), the rope-blocking plate (5) and the rope-blocking rotating plate (6) form a closed space to prevent the sling (8) from coming out of the rope groove (4). The rope groove (4) has a positioning locking hole (41) and a vertically arranged first limiting hole (42) and second limiting hole (43) on one side. A first limiting post (44) and a second limiting post (45) are respectively arranged in the first limiting hole (42) and the second limiting hole (43). The rope-blocking rotating plate (6) is provided with a τ-shaped through-hole groove (61), a first positioning hole (62), and a second positioning hole (63); The first limiting post (44) and the second limiting post (45) are both movably embedded in the through hole groove (61); the first positioning hole (62) and the second positioning hole (63) are respectively connected to the positioning locking hole (41) by locking bolts (46), corresponding to the two states of the rope blocking and rope exiting of the rope blocking rotating plate (6).

2. The anti-derailment device according to claim 1, characterized in that: The lifting lug (2) is a single-ear plate structure. Two sets of anti-rope slippage devices are symmetrically arranged on both sides of the single-ear plate of the lifting lug (2). The rope grooves (4) of the two sets of anti-rope slippage devices are installed on the same follow pin (3).

3. The anti-derailment device according to claim 1, characterized in that: The positioning locking hole (41) and the first limiting hole (42) are at the same horizontal level.

4. The anti-derailment device according to claim 1, characterized in that: The rope guard plate (5) is fitted onto the pin (3) using a through hole provided on its top.

5. The anti-derailment device according to claim 1, characterized in that: The lower part of the rope-blocking plate (5) has an L-shaped structure, which together with the rope-blocking plate (5) and the rope groove (4) forms a closed space to prevent rope slippage.

6. The anti-derailment device according to claim 1, characterized in that: The rope-blocking rotating plate (6) is fixedly equipped with a handle (7) for easy rotation operation.

7. The anti-derailment device according to claim 1, characterized in that: The rotation angle of the rope-blocking rotating plate (6) between the rope-blocking and rope-out states is 90°.

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