Chain anti-falling device

Abstract

The utility model provides a chain anti-dropping device which comprises a U-shaped reed, the U-shaped reed comprises clamping plates on the two sides and a fixing plate in the middle, the fixing plate is fixedly connected with the clamping plates, each clamping plate comprises an upper clamping plate section, a middle vertical plate section and a lower baffle section, the clamping plate sections incline towards the inner side of the U-shaped reed, and the vertical plate sections incline towards the inner side of the U-shaped reed. The baffle section inclines towards the outer side of the U-shaped reed, and arc-shaped clamping openings are formed in the two sides of the vertical plate section. The chain locking device is simple in structure, convenient to operate and easy to manufacture, the annular closed position of the chain can be firmly locked through the U-shaped reed, equivalently, the U-shaped reed and the chain are integrated, the hidden danger that the chain falls off is greatly reduced, and safe operation of equipment is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of chains, and particularly relates to a chain anti-falling device. Background Art

[0002] Chains are generally metal links or rings, mostly used for mechanical transmission and traction. Chains are divided into four categories according to their uses and functions: transmission chains, conveyor chains, traction chains, and special purpose chains. Among similar products, chain product series are divided according to the basic structure of the chain, that is, according to the shape of the components, the parts and positions that mesh with the chain, and the size ratio between the parts. There are many types of chains, but their basic structures are only the following, and the others are variations of these. For example Figure 1 As shown in the above chain structures, we can see that most chains are composed of components such as chain plates 1, chain pins 2, and shaft sleeves 3. The ring closure of existing chains is mainly locked by a lock, but the existing locking method is not reliable and there is a safety hazard of the lock falling off under vibration, shaking, etc.

[0003] Therefore, it is necessary to design a chain anti-falling device to reduce or avoid the risk of the chain connection falling off. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a chain anti-falling device to solve the problem of hidden dangers of falling off at the chain connection.

[0005] The technical solution of the utility model is: a chain anti-slip device, including a U-shaped spring, the U-shaped spring including clamping plates on both sides and a fixed plate in the middle, the fixed plate and the clamping plate are fixedly connected, the clamping plate includes an upper clamping plate section, a middle vertical plate section, and a lower baffle section, wherein the clamping plate section is inclined toward the inner side of the U-shaped spring, and the baffle section is inclined toward the outer side of the U-shaped spring, arc-shaped bayonet holes are provided on both sides of the vertical plate section, the angle formed between the clamping plate section and the vertical center line is ɑ, the angle formed between the baffle section and the vertical center line is β, ɑ and β are both acute angles, and ɑ<β.

[0006] Preferably, the connection between the clamping plate and the fixing plate is in a curved arc shape.

[0007] Preferably, the clamping plate and the fixing plate of the U-shaped spring are integrally connected, and the U-shaped spring is made of elastic material.

[0008] Preferably, the angle range of ɑ is 5° to 10°, and the angle range of β is 15° to 20°.

[0009] Beneficial effects of the utility model:

[0010] The structure of the utility model is simple, easy to operate and manufacture. The U-shaped spring piece can firmly lock the closed loop of the chain, which is equivalent to integrating the U-shaped spring piece with the chain, greatly reducing the potential hazard of the chain connection falling off and ensuring the safe operation of the equipment. In addition, during the actual operation, the colors of the U-shaped spring piece and the chain can be set differently. For example, the color of the U-shaped spring piece can be set to red or orange, which is convenient for checking, repairing and replacing the connection of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. 6 is a schematic structural view of an existing chain.

[0012] Figure 2 FIG. 10 is a perspective view of the utility model.

[0013] Figure 3 FIG. 14 is a front view of the utility model.

[0014] Figure 4 FIG. 18 is a side view of the utility model.

[0015] Figure 5 FIG. 22 is the usage state of the utility model Figure 1 .

[0016] Figure 6 FIG. 28 is the usage state of the utility model Figure 2 . DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions and beneficial effects of the utility model more clear, the embodiments of the utility model will be further described in detail below with reference to the accompanying drawings.

[0018] As Figures 2 to 6As shown in the figure, a chain anti - detachment device includes a U - shaped spring piece 4. The U - shaped spring piece 4 includes clamping plates 401 on both sides and a fixing plate 402 in the middle. The clamping plates 401 and the fixing plate 402 of the U - shaped spring piece 4 are integrally connected, and the U - shaped spring piece 4 is made of a high - elasticity material, which can ensure that the U - shaped spring piece 4 is integrated with the chain. The connection between the clamping plate 401 and the fixing plate 402 is in a curved arc shape. The clamping plate 401 includes an upper clamping plate section 4011, a middle vertical plate section 4012, and a lower baffle section 4013. Among them, the clamping plate section 4011 inclines towards the inner side of the U - shaped spring piece 4, and the baffle section 4013 inclines towards the outer side of the U - shaped spring piece 4. Arc - shaped clamping openings 4014 are arranged on both sides of the vertical plate section 4012. The specifications of the arc - shaped clamping openings 4014 are the same as those of the chain pins 2 of the chain. The included angle formed between the clamping plate section 4011 and the vertical center line is ɑ, and the included angle formed between the baffle section 4013 and the vertical center line is β. Both ɑ and β are acute angles, and ɑ < β. The angle value range of ɑ is 5° - 10°, and the angle value range of β is 15° - 20°. Through the inward convergence of the clamping plate section 4011, the outward inclination of the baffle section 4013, and the acute - angle setting of the included angles ɑ and β, the clamping degree between the U - shaped spring piece 4 and the chain plate 1 can be ensured.

[0019] The structure of the present utility model is simple, easy to operate, and simple to manufacture. Through the U - shaped spring piece 4, the closed loop of the chain can be firmly locked, which is equivalent to integrating the U - shaped spring piece 4 with the chain plate 1 of the chain, greatly reducing the potential hazard of the chain connection falling off and ensuring the safe operation of the equipment.

[0020] The above is a preferred embodiment of the present utility model. Those skilled in the art should understand that the embodiments of the present utility model are not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.

Claims

1. A chain anti - detachment device, characterized in that: It includes a U-shaped spring piece. The U-shaped spring piece includes clamping plates on both sides and a fixing plate in the middle. The fixing plate is fixedly connected to the clamping plates. The clamping plates include an upper clamping plate section, a middle vertical plate section, and a lower baffle section. Among them, the clamping plate section inclines towards the inner side of the U-shaped spring piece, and the baffle section inclines towards the outer side of the U-shaped spring piece. Arc-shaped bayonets are provided on both sides of the vertical plate section. The included angle formed between the clamping plate section and the vertical center line is ɑ, and the included angle formed between the baffle section and the vertical center line is β. Both ɑ and β are acute angles, and ɑ < β.

2. The chain anti - detachment device according to claim 1, characterized in that: The connection between the clamping plate and the fixing plate is in a curved arc shape.

3. A chain anti-disengagement device according to claim 1, characterized in that: The clamping plate and the fixing plate of the U-shaped spring piece are integrally connected, and the U-shaped spring piece is made of an elastic material.

4. A chain anti - detachment device according to claim 1, characterized in that: The angle value range of ɑ is 5° to 10°, and the angle value range of β is 15° to 20°.

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