CN215980381U

CN215980381U - Difficult not hard up heavy machinery link joint bolt

Info

Publication number: CN215980381U
Application number: CN202122690435.1U
Authority: CN
Inventors: 傅子楚
Original assignee: Quanzhou Yongjin Machinery Parts Co ltd
Current assignee: Quanzhou Yongjin Machinery Parts Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-03-08
Anticipated expiration: 2031-11-05

Abstract

The utility model provides a heavy machinery chain plate bolt difficult to loosen, which comprises a bolt head, a screw rod vertically arranged on the bolt head and a nut matched with a thread on the screw rod far away from the side of the bolt head, wherein one side of the nut far away from the bolt head is sleeved with a rubber sleeve, the rubber sleeve consists of a bottom layer and a ring sleeve layer vertically arranged on the edge of the bottom layer, the bottom layer is in a hollow disc shape, the inner diameter of the bottom layer is equal to the outer diameter of the screw rod, and the inner diameter of the ring sleeve layer is equal to the outer diameter of the nut; a disc-shaped gasket is arranged between the bottom layer and the nut. The rubber sleeve is arranged on the outer side of the nut of the chain plate bolt, and the bottom layer of the rubber sleeve can be clamped and sleeved on the outer side of the screw rod when the nut is sleeved by the rubber sleeve, so that the nut can be more stably fixed on the screw rod, and the nut is not easy to loosen.

Description

Difficult not hard up heavy machinery link joint bolt

Technical Field

The utility model belongs to the technical field of bolt assemblies, and particularly relates to a heavy machinery chain plate bolt not easy to loosen.

Background

The link plate bolt is a tool for connecting a plurality of link plates, and plays a very important role in an installation process although it is small in size. The number of link plate bolts required to complete the connection of a complete set of link plates is also large. For example, in a large machine such as an excavator, the requirement on the stability of the link plate connection is high, and once the link plate is loosened, the normal use is affected, and even danger is generated.

The existing chain plate bolt only comprises a bolt rod and a nut, and the nut is high in possibility of loosening along with the operation vibration of machinery. Therefore, a reinforcing structure is required to be arranged on the outer side of the nut, so that the nut and the bolt rod are more stably matched, and the nut is not easy to loosen.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved is as follows: aiming at the defects in the prior art, the utility model provides the heavy machinery chain plate bolt which is not easy to loosen.

The technical scheme is as follows: a heavy machinery chain plate bolt not easy to loosen comprises a bolt head, a screw rod vertically arranged on the bolt head and a nut matched with threads on the screw rod far away from the bolt head, wherein a rubber sleeve is sleeved on one side of the nut far away from the bolt head and consists of a bottom layer and a ring sleeve layer vertically arranged on the edge of the bottom layer, the bottom layer is in a hollow disc shape, the inner diameter of the bottom layer is equal to the outer diameter of the screw rod, and the inner diameter of the ring sleeve layer is equal to the outer diameter of the nut; a disc-shaped gasket is arranged between the bottom layer and the nut.

The inner diameter of the gasket is larger than or equal to the outer diameter of the screw rod, and the outer diameter of the gasket is smaller than or equal to the inner diameter of the ring sleeve layer.

The gasket is fixedly connected with the rubber sleeve.

The height of the ring layer is not less than half of the height of the nut.

The bolt head is a hexagonal bolt head.

The nut is a hexagonal nut, and the corresponding snare layer is in a hollow hexagonal prism shape.

Has the advantages that: the utility model provides a heavy machinery chain plate bolt not easy to loosen, which has the following beneficial effects:

1. the rubber sleeve is arranged on the outer side of the nut, and the bottom layer of the rubber sleeve can be clamped and sleeved on the outer side of the screw rod while the rubber sleeve sleeves the nut, so that the nut can be more stably fixed on the screw rod, and the nut is not easy to loosen;

2. the gasket is designed to facilitate pressing of the bottom layer when the rubber sleeve is sleeved, so that the sleeving speed is increased, and the time is saved.

Drawings

Fig. 1 is a schematic structural view of a link plate bolt of the present invention.

Fig. 2 is a sectional view taken along the plane a-a in fig. 1.

Fig. 3 is a sectional view taken along the plane B-B in fig. 1.

In the figure: 1. a bolt head; 2. a screw; 3. a nut; 4. a rubber sleeve; 41. a bottom layer; 42. a loop layer; 5. and (7) a gasket.

Detailed Description

The following embodiments are further described with reference to the accompanying drawings.

As shown in fig. 1-3, the present embodiment provides a heavy machinery link plate bolt not easy to loosen, which includes a bolt head 1, a screw rod 2 vertically disposed on the bolt head 1, and a nut 3 in threaded fit with the screw rod 2 on the side far from the bolt head 1, wherein a rubber sleeve 4 is sleeved on the side of the nut 3 far from the bolt head 1, the rubber sleeve 4 is composed of a bottom layer 41 and a ring-shaped layer 42 vertically disposed on the edge of the bottom layer 41, the bottom layer 41 is in a hollow disc shape, the inner diameter of the bottom layer 41 is equal to the outer diameter of the screw rod 2, and the inner diameter of the ring-shaped layer 42 is equal to the outer diameter of the nut 3; a disc-shaped gasket 5 is arranged between the bottom layer 41 and the nut 3.

Preferably, the inner diameter of the gasket 5 is larger than or equal to the outer diameter of the screw rod 2, and the outer diameter of the gasket 5 is smaller than or equal to the inner diameter of the ring layer 42. The size of the pad 5 is not required to be the same as that of the bottom layer 41, and only one acting point is provided when the rubber sleeve 4 is sleeved, so that the pressing is convenient.

Preferably, the gasket 5 is fixedly connected with the rubber sleeve 4. The whole structure is simpler and more convenient due to the arrangement of the fixed connection.

Preferably, the height of the collar layer 42 is not less than half the height of the nut 3. The ring sleeve layer 42 at least covers half of the nut 3, and can play a better role in protecting and fixing the nut 3

Preferably, the bolt head 1 is a hexagonal bolt head. The arrangement of the hexagonal bolt head is convenient to take.

Preferably, the nut 3 is a hexagonal nut, and the corresponding snare layer 42 is in the shape of a hollow hexagonal prism. The arrangement of the hollow hexagonal prism facilitates screwing the nut 3.

During the in-service use, screw nut 3 at the screw thread department of screw rod 2 earlier, then embolia rubber sleeve 4 from the screw rod 2 tip, through pressing gasket 5 in the bottom 41, until gasket 5 and 3 butts of nut, rubber sleeve 4 cover is established on nut 3 this moment, plays the effect of fixing and protection to nut 3, and nut 3 is difficult not hard up. Or the rubber sleeve 4 is sleeved on the nut 3, and then the rubber sleeve 4 and the nut 3 are integrally screwed at the thread of the screw rod 2, so that the same effect is achieved.

While the embodiments of the present invention have been described in detail, those skilled in the art will recognize that the embodiments of the present invention can be practiced without departing from the spirit and scope of the claims.

Claims

1. The utility model provides a difficult not hard up heavy machinery link joint bolt, this link joint bolt include bolt head (1), set up screw rod (2) on bolt head (1) perpendicularly and with screw rod (2) on keep away from screw-thread fit's nut (3) of bolt head (1) side, its characterized in that: one side, far away from the bolt head (1), of the nut (3) is sleeved with a rubber sleeve (4), the rubber sleeve (4) is composed of a bottom layer (41) and a ring sleeve layer (42) vertically arranged on the edge of the bottom layer (41), the bottom layer (41) is in a hollow disc shape, the inner diameter of the bottom layer (41) is equal to the outer diameter of the screw rod (2), and the inner diameter of the ring sleeve layer (42) is equal to the outer diameter of the nut (3); a disc-shaped gasket (5) is arranged between the bottom layer (41) and the nut (3).

2. A hard-to-loosen heavy machinery link plate bolt according to claim 1, wherein: the inner diameter of the gasket (5) is larger than or equal to the outer diameter of the screw (2), and the outer diameter of the gasket (5) is smaller than or equal to the inner diameter of the ring sleeve layer (42).

3. A hard-to-loosen heavy machinery link plate bolt according to claim 1, wherein: the gasket (5) is fixedly connected with the rubber sleeve (4).

4. A hard-to-loosen heavy machinery link plate bolt according to claim 1, wherein: the height of the ring layer (42) is not less than half of the height of the nut (3).

5. A hard-to-loosen heavy machinery link plate bolt according to claim 1, wherein: the bolt head (1) is a hexagonal bolt head.

6. A hard-to-loosen heavy machinery link plate bolt according to claim 1, wherein: the nut (3) is a hexagonal nut, and the corresponding ring sleeve layer (42) is in a hollow hexagonal prism shape.