High-strength chain

Abstract

The utility model discloses a high-strength chain. According to the technical scheme, the high-strength chain is characterized by comprising outer chain links and inner chain links which are arranged in an overlapped mode, a sleeve is arranged between the two inner chain links, a first connecting hole and a second connecting hole are formed in the two sides of the outer chain links and the two sides of the inner chain links respectively, a connecting pin shaft is arranged in the first connecting hole in a penetrating mode, and the sleeve is arranged on the outer side of the connecting pin shaft in a sleeving mode; the two ends of the connecting pin shaft are each provided with a set of clamping grooves circumferentially formed along the connecting pin shaft, balls are installed in the clamping grooves, and the balls are in rolling connection with the inner wall of the sleeve. According to the connecting pin shaft, the balls are installed in the clamping grooves, the balls abut against the inner wall of the sleeve through movement of the balls in the clamping grooves, so that rotating friction between the connecting pin shaft and the sleeve is changed into rolling friction, friction force is smaller, abrasion generated between the connecting pin shaft and the sleeve in the using process is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain technology field especially is related to a high strength chain. BACKGROUND

[0002] Chain is generally metal chain ring or annular, and is used for mechanical transmission, traction. Chain-shaped objects used to obstruct traffic passages (such as in the street, river or harbor entrance), chains used for mechanical transmission. Most chains are composed of chain plates, connecting pins, shaft sleeves and other components.

[0003] The chain plate includes an inner chain plate and an outer chain plate, and the connecting pin is an essential part for connecting two chain plates. The stretching force of the chain plate acts on the connecting pin during long-term use, causing the connecting pin to wear and tear, which easily leads to an increase in the distance between the chain plates. Therefore, a new solution is proposed to solve this problem. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a high-strength chain. A ball is installed in the clamping groove. The movement of the ball in the clamping groove is in contact with the inner wall of the sleeve, which changes the rotational friction between the connecting pin and the sleeve to rolling friction, and the friction is smaller, thereby reducing the wear and tear between the connecting pin and the sleeve during use and prolonging the service life.

[0005] The above technical purpose of the utility model is achieved by the following technical scheme: a high-strength chain includes outer links and inner links arranged in an overlapping manner. A sleeve is arranged between the two inner links. First and second connecting holes are formed on the two sides of the outer and inner links. A connecting pin is arranged in the first connecting hole. The sleeve is arranged on the outer side of the connecting pin. A group of clamping grooves are arranged on the two ends of the connecting pin in a circumferential manner. Balls are installed in the clamping grooves. The balls are in rolling connection with the inner wall of the sleeve.

[0006] By adopting the above technical scheme, the inner and outer links are connected to form a chain in an overlapping manner. The sleeve is in interference fit with the second connecting hole of the inner link. The connecting pin is arranged in the first connecting hole of the outer link. The two ends of the connecting pin are provided with rivets to rivet the connecting pin and the outer link. The second connecting hole corresponding to the connecting pin is provided with a clamping groove. The number of clamping grooves can be adjusted according to actual production needs. Balls are installed in the clamping grooves. The movement of the balls in the clamping grooves is in contact with the inner wall of the sleeve, which changes the rotational friction between the connecting pin and the sleeve to rolling friction, and the friction is smaller, thereby reducing the wear and tear between the connecting pin and the sleeve during use and prolonging the service life.

[0007] The utility model further sets up: one group the card slot includes 2~4.

[0008] The utility model further sets up: the sleeve and inner chain section interference fit.

[0009] The utility model further sets up: the both ends of connecting pin shaft all are provided with rivet head, rivet head rivets with outer chain section.

[0010] Summarized above, the utility model has following beneficial effect:

[0011] Ball is installed in the card slot, and the ball uses the movement in the card slot and the inner wall of sleeve and is contacted, so that the rotating friction between connecting pin shaft and sleeve becomes rolling friction, and the friction is smaller, so as to reduce the abrasion between connecting pin shaft and sleeve in use, prolong the service life. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural schematic diagram of the utility model;

[0013] Figure 2 It is the plan view of the utility model;

[0014] Figure 3 It is Figure 2 A-A section view of

[0015] In the drawing: 1, outer chain section;2, sleeve;3, inner chain section;4, second connecting hole;5, rivet head;6, connecting pin shaft;7, ball. DETAILED DESCRIPTION

[0016] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model is described in further detail below in conjunction with the drawings and specific embodiments, and it needs to be explained that the embodiments of the application and the features in the embodiment can be combined mutually in the case of no conflict.

[0017] In the description of the utility model, it needs to be explained that the orientation or position relation of the terms "up", "down", "inner", "outer", "top / bottom end" etc. indicated is based on the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not indicated or implied that the indicated device or element must have a particular orientation, construct and operate, therefore can not be understood as the limitation of the utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] A high-strength chain, such as Figures 1-3 As shown, it includes an outer link 1 and an inner link 3 arranged in an overlapping manner. A sleeve 2 is provided between the two inner link 3. A first connecting hole and a second connecting hole 4 are respectively opened on both sides of the outer link 1 and the inner link 3. A connecting pin 6 is passed through the inside of the first connecting hole. The sleeve 2 is sleeved on the outside of the connecting pin 6. A set of grooves arranged circumferentially along the connecting pin 6 are provided at both ends of the connecting pin 6. A ball bearing 7 is installed in the groove. The ball bearing 7 is in rolling connection with the inner wall of the sleeve 2. A set of grooves includes 2 to 4. The sleeve 2 and the inner link 3 are interference fit.

[0021] The inner link 3 and the outer link 1 are connected in an overlapping manner to form a chain. The sleeve 2 is interference-fitted with the second connecting hole 4 on the inner link 3. A connecting pin 6 is inserted into the first connecting hole on the outer link 1. The two ends of the connecting pin 6 are provided with rivets 5 so that the connecting pin 6 is riveted to the outer link 1. A slot is provided at the position of the second connecting hole 4 corresponding to the connecting pin 6. The number of slots can be adjusted according to actual production needs. A ball bearing 7 is installed in the slot. The ball bearing 7 moves in the slot and abuts against the inner wall of the sleeve 2, so that the rotational friction between the connecting pin 6 and the sleeve 2 is changed to rolling friction, which reduces the friction force and reduces the wear between the connecting pin 6 and the sleeve 2 during use, thus extending the service life.

[0022] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A high-strength chain, comprising overlapping outer links (1) and inner links (3), a sleeve (2) disposed between two inner links (3), a first connecting hole and a second connecting hole (4) respectively opened on both sides of the outer links (1) and the inner links (3), a connecting pin (6) being disposed through the interior of the first connecting hole, characterized in that: The sleeve (2) is fitted onto the outside of the connecting pin (6). A set of grooves arranged circumferentially along the connecting pin (6) are provided at both ends of the connecting pin (6). Ball bearings (7) are installed in the grooves and are in rolling connection with the inner wall of the sleeve (2).

2. The high-strength chain according to claim 1, characterized in that: A set of the card slots includes 2 to 4.

3. A high-strength chain according to claim 1, characterized in that: The sleeve (2) is interference-fitted with the inner link (3).

4. A high-strength chain according to claim 1, characterized in that: Both ends of the connecting pin (6) are provided with rivet heads (5), and the rivet heads (5) are riveted to the outer link (1).

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