Stable profile steel pintle chain

Abstract

The invention provides a stable steel pin chain, and relates to the technical field of chain equipment. A stable steel pin chain comprises a chain plate, a connecting pin shaft and a connecting sleeve, a plurality of negative pressure mechanisms are arranged in the connecting pin shaft, each negative pressure mechanism comprises an oil storage cavity, a plurality of sets of negative pressure channels are formed in the outer side wall of the connecting pin shaft, and the negative pressure channels are distributed on the peripheries of the oil storage cavities correspondingly. And the single group of negative pressure channels are distributed in an annular array. In the negative pressure bearing process, the pressure can be transmitted to other negative pressure mechanisms through the channels, the overall stress performance is further improved, and the stress integrity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chain equipment, in particular to a stable steel pin chain. Background Art

[0002] Pin chain is a mechanical engineering term published in 2000. It refers to a chain whose links are made of malleable cast iron and connected by steel pins. There is no distinction between internal and external links. Steel pin chain is a pin chain made of steel as the main raw material. It has the characteristics of simple structure and flexible combination with a variety of accessories.

[0003] During the operation of a traditional pin chain, the long-term frictional negative pressure between the sleeve and the pin shaft will affect the practical life of the contact part. So far, there is no good way to deal with this problem. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a stable steel pin chain, which solves the problem that the long-term friction negative pressure between the sleeve and the pin shaft will affect the practical life of the contact part, and there is no good solution to the problem so far.

[0005] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a stable steel pin chain, comprising a chain plate, a connecting pin and a connecting sleeve, wherein a plurality of negative pressure mechanisms are arranged inside the connecting pin, wherein the negative pressure mechanism comprises an oil storage chamber, and a plurality of groups of negative pressure channels are opened on the outer wall of the connecting pin, wherein the plurality of groups of negative pressure channels are respectively distributed on the periphery of the plurality of oil storage chambers, and a single group of the negative pressure channels are distributed in a circular array, wherein the plurality of negative pressure channels are all connected to the oil storage chamber, and a negative pressure slide plate is slidably arranged inside the plurality of negative pressure channels, and the side wall of the negative pressure slide plate away from the oil storage chamber is fixedly connected with a return spring, and the return spring extends to the outside of the negative pressure channel away from the side wall of the negative pressure slide plate and is fixedly connected with a clamping arc plate, and the interiors of the plurality of clamping arc plates are rotatably clamped with connecting balls.

[0006] Preferably, the positions of the multiple oil storage chambers located inside the same connecting pin are distributed up and down, and two adjacent oil storage chambers are connected through a channel.

[0007] Working principle: When in use, when the pin chain is subjected to large load negative pressure during operation, the relative displacement between the pin and the sleeve will cause the inner wall of the sleeve to squeeze the connecting ball and slide relative to it. At this time, the connecting ball will transfer the pressure to other negative pressure slides and connecting balls through the return spring and the negative pressure slide, so as to distribute the pressure, thereby avoiding excessive force between the local area of ​​the pin and the sleeve, and protecting key components. In the process of being subjected to negative pressure, the pressure will be transmitted to other negative pressure mechanisms through the channel, further improving the overall force-bearing capacity and improving its force integrity.

[0008] (III) Beneficial effects The present invention provides a stable steel pin chain having the following beneficial effects: 1. When the stable steel pin chain is subjected to large load negative pressure, the connecting balls will transfer the pressure to other negative pressure slides and connecting balls through the return spring and the negative pressure slide, so as to distribute the pressure, thereby avoiding excessive force between the local area of ​​the pin shaft and the sleeve, and protecting the key components.

[0009] 2. When the stable steel pin chain is subjected to negative pressure, the pressure will be transmitted to other negative pressure mechanisms through the channel, further improving the overall force-bearing capacity and improving its force-bearing integrity. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A top view of the present invention; Figure 2 It is a structural schematic diagram of the negative pressure mechanism of the present invention.

[0011] Among them, 1. chain plate; 2. connecting sleeve; 3. connecting pin shaft; 4. oil storage chamber; 5. reset spring; 6. negative pressure channel; 7. clamping arc plate; 8. connecting ball; 9. negative pressure slide plate. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0013] like Figure 1-2As shown, an embodiment of the present invention provides a stable steel pin chain, including a chain plate 1, a connecting pin shaft 3 and a connecting sleeve 2, a plurality of negative pressure mechanisms are arranged inside the connecting pin shaft 3, the negative pressure mechanism includes an oil storage chamber 4, a plurality of groups of negative pressure channels 6 are opened on the outer wall of the connecting pin shaft 3, the plurality of groups of negative pressure channels 6 are respectively distributed on the periphery of the plurality of oil storage chambers 4, a single group of negative pressure channels 6 is distributed in a ring array, the plurality of negative pressure channels 6 are all connected to the oil storage chamber 4, a negative pressure slide plate 9 is slidably arranged inside the plurality of negative pressure channels 6, the side wall of the negative pressure slide plate 9 away from the oil storage chamber 4 is fixedly connected with a return spring 5, the return spring 5 extends to the outside of the negative pressure channel 6 away from the side wall of the negative pressure slide plate 9 and is fixedly connected with a clamping arc plate 7, and the interiors of the plurality of clamping arc plates 7 are rotatably clamped with connecting balls 8.

[0014] The positions of the multiple oil storage chambers 4 located inside the same connecting pin shaft 3 are distributed up and down, and two adjacent oil storage chambers 4 are connected through a channel.

[0015] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable steel pin chain, comprising a chain plate (1), a connecting pin (3) and a connecting sleeve (2), characterized in that: A plurality of negative pressure mechanisms are arranged inside the connecting pin shaft (3), and the negative pressure mechanisms include an oil storage chamber (4). The outer wall of the connecting pin shaft (3) is provided with a plurality of negative pressure channels (6). The plurality of negative pressure channels (6) are respectively distributed on the periphery of the plurality of oil storage chambers (4). A single group of negative pressure channels (6) is distributed in a ring array. The plurality of negative pressure channels (6) are all connected to the oil storage chamber (4). A negative pressure slide plate (9) is slidably arranged inside the plurality of negative pressure channels (6). The side wall of the negative pressure slide plate (9) away from the oil storage chamber (4) is fixedly connected to a return spring (5). The return spring (5) extends away from the side wall of the negative pressure slide plate (9) to the outside of the negative pressure channel (6) and is fixedly connected to a clamping arc plate (7). The interior of the plurality of clamping arc plates (7) is rotatably clamped with a connecting ball (8).

2. A stable steel pin-jointed chain according to claim 1, characterized in that: The positions of the plurality of oil storage chambers (4) located inside the same connecting pin shaft (3) are distributed up and down, and two adjacent oil storage chambers (4) are connected via a channel.

Images