Steel pin chain

Abstract

The application discloses a steel pin joint chain, which comprises V-shaped single chain plates and pin shafts, the pin shaft holes at the front ends of the V-shaped single chain plates are installed in interference fit with the pin shafts, and the pin shaft holes at the rear ends of the V-shaped single chain plates are installed in clearance fit with the pin shafts; the pin shafts at the outer ends of the pin shaft holes at the rear ends of the V-shaped single chain plates are sleeved with limiting fixing plates and spherical elastic members, conveying plates are installed above the V-shaped single chain plates, elastic conveying belts are installed between two adjacent conveying plates, and the conveying plates and the elastic conveying belts which are connected in series at intervals form a whole conveying plane. The steel pin joint chain has a compact structure, can ensure the stability and firmness of the whole steel pin joint chain link connection, and can enable two adjacent V-shaped single chain plates to deflect at a certain angle at the link, so that the risk of high resistance, high noise and easy damage caused by stress bending of the link in the limiting direction is reduced, the steel pin joint chain is safe and reliable, material conveying is stable, transmission efficiency is high, and the steel pin joint chain is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of chain technology, specifically a steel pin chain. Background Technology

[0002] Pin-and-chain transmission is a type of chain drive. It is a simple, reliable, and efficient power transmission device. Due to its flexibility in combination and installation, it is widely used in spreaders for granular materials such as salt and fertilizer, feed sorting machines and hay spreading equipment in animal husbandry, low-speed conveying equipment in wood processing, and other similar conveying systems.

[0003] Currently, common pin-locking chains can only bend freely in one direction through their links. In the opposite direction, they are structurally restricted and locked, leaving no room for movement. Therefore, if the fixed gear at one end of the pin-locking chain experiences even a slight lateral shift in its limiting direction, it can easily obstruct the chain's operation, causing problems such as high resistance and noise. Furthermore, it can easily lead to tensile damage, thus affecting transmission efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a steel pin chain to solve the above-mentioned defects.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A steel pin chain includes several V-shaped single chain plates and pins. Two adjacent V-shaped single chain plates are connected end-to-end and fixed by pins. Each V-shaped single chain plate has pin holes at both ends. The pin hole at the front end of the V-shaped single chain plate is interference-fitted with the pin, while the pin hole at the rear end of the V-shaped single chain plate is clearance-fitted with the pin. A limiting and fixing plate and a spherical elastic element are sleeved on the pin at the outer end of the pin hole at the rear end of the V-shaped single chain plate. A conveyor plate is installed above each V-shaped single chain plate, and an elastic conveyor belt is installed between two adjacent conveyor plates. The conveyor plates and elastic conveyor belts connected in series at intervals form the entire conveying plane.

[0007] Preferably, the V-shaped single-chain plate is composed of a U-shaped rear end plate, two front end plates, and an intermediate plate. The two intermediate plates are arranged in a figure-eight shape, and their rear ends are respectively connected and fixed to the front ends of the U-shaped rear end plate. The two front end plates are parallel to each other, and their rear ends are respectively connected and fixed to the front ends of the two intermediate plates.

[0008] Preferably, the pin holes at the front end of the V-shaped single chain plate are set on the two front end plates, and the center lines of the pin holes on the two front end plates are collinear; the pin holes at the rear end of the V-shaped single chain plate are set on the two vertical plates of the U-shaped rear end plate, and the center lines of the two pin holes on the U-shaped rear end plate are collinear.

[0009] Preferably, an inverted L-shaped connecting plate is bolted to the outer side of each of the two intermediate plates, and the conveying plates are bolted to the horizontal plate of the two inverted L-shaped connecting plates.

[0010] Preferably, a roller is fitted on the pin on the inner side of the U-shaped rear end plate, and an inner pad is fitted on the pin between the two ends of the roller and the two vertical plates of the U-shaped rear end plate.

[0011] Preferably, the spherical elastic element is a spherical or ellipsoidal structure, and includes an upper hemispherical shell, a lower hemispherical shell, and a middle partition. The middle partition is installed between the upper and lower hemispherical shells. The interior of the upper and lower hemispherical shells is filled with a high-elastic rubber layer. A component through hole in a straight line is provided at the center of the upper hemispherical shell, the lower hemispherical shell, and the middle partition. The pin passes through the component through hole of the spherical elastic element.

[0012] Preferably, the upper hemispherical shell, the lower hemispherical shell, and the middle partition are all made of elastic steel plate.

[0013] Preferably, both the limiting fixing plate and the inner pad are provided with pin through holes at their centers, and the pin passes through the pin through holes of the limiting fixing plate and the inner pad; both the inner end face of the limiting fixing plate outside the pin through hole and the outer end face of the inner pad outside the pin through hole are provided with annular limiting protrusions, and the two annular limiting protrusions of the limiting fixing plate and the inner pad are respectively inserted from both sides of the vertical plate of the U-shaped rear end plate into the gap between the pin hole and the pin of the U-shaped rear end plate of the V-shaped single chain plate.

[0014] Preferably, the outer wall of the annular limiting protrusion has a bowl-shaped arc structure, the pin hole of the U-shaped rear end plate is composed of a central cylindrical hole and flared ends at both ends, the flared ends have a trumpet-shaped structure, and the front end of the annular limiting protrusion is engaged with the flared end of the pin hole of the U-shaped rear end plate, or engaged with the flared end of the pin hole of the U-shaped rear end plate and the central cylindrical hole.

[0015] Preferably, the limiting and fixing plate and its annular limiting protrusion, and the inner pad plate and its annular limiting protrusion are all made using an integral molding technology.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention relates to a steel pin-joint chain with a compact structure. By fitting a limiting and fixing plate and a spherical elastic element onto the pin at the outer end of the pin hole at the rear end of the V-shaped single chain plate, the limiting and fixing plate can be engaged into the gap between the pin hole and the pin using the spherical elastic element. This not only ensures the stability and firmness of the entire steel pin-joint chain link connection, but also allows two adjacent V-shaped single chain plates to deflect at a certain angle at the chain link, reducing the risk of high running resistance, high noise, and easy damage caused by bending of the chain link in its limiting direction. It is safe, reliable, improves transmission efficiency, and is easy to use. Attached Figure Description

[0018] Figure 1 : Front view of the structure of this invention;

[0019] Figure 2 Top view of the structure of this invention;

[0020] Figure 3 : A schematic diagram of the structure of the link of the steel pin chain of the present invention;

[0021] Figure 4 : Schematic diagram of the installation of the limiting and fixing plate and the inner pad plate of the steel pin chain of the present invention. Detailed Implementation

[0022] Combined with appendix Figure 1-4 The specific embodiments of the present invention are described below:

[0023] like Figure 1-4 As shown, a steel pin chain includes several V-shaped single chain plates 1 and pin shafts 2. Two adjacent V-shaped single chain plates 1 are connected by pin shafts 2. Several V-shaped single chain plates 1 are connected end to end and fixed together to form a steel pin chain.

[0024] Each of the V-shaped single chain plates 1 is equipped with a conveyor plate 5. An elastic conveyor belt 6 is installed between two adjacent conveyor plates 5. Several conveyor plates 5 and elastic conveyor belts 6 are arranged at intervals and connected in series. All the conveyor plates 5 and elastic conveyor belts 6 together form the entire material conveying planar channel.

[0025] The V-shaped single-chain plate 1 consists of a U-shaped rear end plate, two front end plates, and an intermediate plate. The two intermediate plates are arranged in a figure-eight shape, and their rear ends are respectively connected and fixed to the front ends of the U-shaped rear end plate. The two front end plates are parallel to each other, and their rear ends are respectively connected and fixed to the front ends of the two intermediate plates.

[0026] In this design, inverted L-shaped connecting plates 7 are bolted to the outer sides of the two intermediate plates of the V-shaped single-chain plate 1, and the conveyor plates 5 are bolted to the horizontal plates of the two inverted L-shaped connecting plates 7. The elastic conveyor belt 6 has a certain degree of elasticity and can be stretched in a plane within a certain range.

[0027] The V-shaped single chain plate 1 has pin holes 11 at both the front and rear ends. The pin holes 11 at the front end of the V-shaped single chain plate 1 are set on the two front end plates, and the center lines of the pin holes 11 on the two front end plates are collinear. The pin holes 11 at the rear end of the V-shaped single chain plate 1 are set on the two vertical plates of the U-shaped rear end plate, and the center lines of the two pin holes 11 on the U-shaped rear end plate are collinear.

[0028] The pin 2 passes through the pin holes 11 on the two front end plates of the V-shaped single chain plate 1, and also passes through the pin holes 11 on the U-shaped rear end plate of the adjacent V-shaped single chain plate 1. The pin holes 11 at the front end of the V-shaped single chain plate 1 and the pin 2 are installed with an interference fit, while the pin holes 11 at the rear end of the V-shaped single chain plate 1 and the pin 2 are installed with a clearance fit.

[0029] A spherical elastic element 3 is fitted onto the pin 2 at the outer end of the pin hole 11 at the rear end of the V-shaped single chain plate 1. The spherical elastic element 3 has a spherical or ellipsoidal structure and includes an upper hemispherical shell 31, a lower hemispherical shell 32, and a middle partition 33. The middle partition 33 is installed between the upper hemispherical shell 31 and the lower hemispherical shell 32. The interiors of both the upper hemispherical shell 31 and the lower hemispherical shell 32 are filled with a high-elastic rubber layer 34. A straight assembly through hole is provided at the center of the upper hemispherical shell 31, the lower hemispherical shell 32, and the middle partition 33, and the pin 2 passes through the assembly through hole of the spherical elastic element 3. The upper hemispherical shell 31, the lower hemispherical shell 32, and the middle partition 33 are all made of elastic steel plate, which can deform under external force.

[0030] Rollers 9 are fitted on the pins 2 inside the U-shaped rear end plate at the rear end of the V-shaped single chain plate 1. Inner pads 8 and limiting and fixing plates 7 are fitted on the pins 2 at both ends of the pin hole 11 at the rear end of the V-shaped single chain plate 1, respectively. That is, inner pads 8 are fitted on the pins 2 between the two ends of the rollers 9 and the two vertical plates of the U-shaped rear end plate.

[0031] Both the limiting and fixing plate 7 and the inner pad plate 8 have pin holes at their centers, with the pin 2 passing through these holes. Annular limiting protrusions are provided on the inner end face of the limiting and fixing plate 7 (outside the pin hole) and the outer end face of the inner pad plate 8 (outside the pin hole). The limiting and fixing plate 7 and its annular limiting protrusions, as well as the inner pad plate 8 and its annular limiting protrusions, are all manufactured using a one-piece molding technique. The two annular limiting protrusions of the limiting and fixing plate 7 and the inner pad plate 8 respectively engage with the pin holes 11 and pin 2 of the U-shaped rear end plate of the V-shaped single-chain plate 1 from both sides of the vertical plate of the U-shaped rear end plate.

[0032] The outer wall of the annular limiting protrusion has a bowl-shaped arc structure. The pin hole 11 of the U-shaped rear end plate is composed of a central cylindrical hole and two flared ends. The flared ends have a trumpet-shaped structure. The front end of the annular limiting protrusion is engaged with the flared end of the pin hole 11 of the U-shaped rear end plate, or engaged with the flared end of the pin hole 11 of the U-shaped rear end plate and the central cylindrical hole.

[0033] When the steel pin chain of the present invention is subjected to force in the limiting direction, the front V-shaped single chain plate 1 at the link deflects and forms a certain angle with the adjacent rear V-shaped single chain plate 1. During this process, the limiting fixing plate 7 is squeezed outward by the U-shaped rear end plate of the front V-shaped single chain plate 1, and the outwardly offset limiting fixing plate 7 will squeeze the spherical elastic member 3. The spherical elastic member 3 with spherical or elliptical structure will deform under the external force and gradually become flat and flat. When the steel pin chain is no longer under force in its limiting direction, the front V-shaped single chain plate 1 and the adjacent rear V-shaped single chain plate 1 at the link gradually return to the same posture. At this time, the spherical elastic element 3 recovers its deformation and squeezes the limiting fixing plate 7. The annular limiting protrusion of the limiting fixing plate 7 is inserted from the outside of the vertical plate of the U-shaped rear end plate into the gap between the pin hole 11 and the pin 2 of the U-shaped rear end plate of the V-shaped single chain plate 1. The outer wall of the bowl-shaped arc structure of the annular limiting protrusion and the inner wall of the flared end of the horn-shaped structure of the pin hole 11 are squeezed and fitted together. Under the compression, the front end of the annular limiting protrusion is inserted into the flared end of the pin hole 11 of the U-shaped rear end plate or into the middle cylindrical hole, so as to achieve the stability of the installation and fixing of the V-shaped single chain plate 1 and the pin 5.

[0034] This invention relates to a steel pin-joint chain with a compact structure. By fitting a limiting and fixing plate 7 and a spherical elastic element 3 onto the pin 2 at the outer end of the pin hole 11 at the rear end of the V-shaped single chain plate 1, the limiting and fixing plate 7 can be engaged into the gap between the pin hole 11 and the pin 2 using the spherical elastic element 3. This not only ensures the stability and firmness of the entire steel pin-joint chain link connection, but also allows two adjacent V-shaped single chain plates 1 to deflect at a certain angle at the chain link, reducing the risk of high running resistance, high noise, and easy damage caused by the chain link bending under force in its limiting direction. It is safe, reliable, improves transmission efficiency, and is easy to use.

[0035] The invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the invention, or the direct application of the inventive concept and technical solution to other situations without modification, is within the protection scope of the invention.

Claims

1. A steel pin link chain characterized in that, It includes several V-shaped single chain plates (1) and pins (2). Two adjacent V-shaped single chain plates (1) are connected end to end by pins (2). The V-shaped single chain plates (1) are provided with pin holes (11) at both ends. The pin hole (11) at the front end of the V-shaped single chain plate (1) is installed with an interference fit with the pin (2), and the pin hole (11) at the rear end of the V-shaped single chain plate (1) is installed with a clearance fit with the pin (2). A limiting fixing plate (7) and a spherical elastic element (3) are sleeved on the pin (2) at the outer end of the pin hole (11) at the rear end of the V-shaped single chain plate (1). The center of the limiting fixing plate (7) is provided with A pin through hole is provided, and the pin (2) passes through the pin through hole of the limiting fixing plate (7); an annular limiting protrusion is provided on the inner end face of the limiting fixing plate (7) outside the pin through hole, and the annular limiting protrusion of the limiting fixing plate (7) is inserted from the outside of the vertical plate of the U-shaped rear end plate into the gap between the pin hole (11) and the pin (2) of the U-shaped rear end plate of the V-shaped single chain plate (1); a conveyor plate (5) is installed on the top of the V-shaped single chain plate (1), and an elastic conveyor belt (6) is installed between two adjacent conveyor plates (5). The conveyor plates (5) and the elastic conveyor belt (6) connected in series at intervals form the entire conveying plane.

2. A steel pin link as claimed in claim 1, characterised in that, The V-shaped single-chain plate (1) consists of a U-shaped rear end plate, two front end plates, and an intermediate plate. The two intermediate plates are arranged in a figure-eight shape, and their rear ends are respectively connected and fixed to the front ends of the U-shaped rear end plate. The two front end plates are parallel to each other, and their rear ends are respectively connected and fixed to the front ends of the two intermediate plates.

3. A steel pin chain according to claim 2, characterized in that, The pin hole (11) at the front end of the V-shaped single chain plate (1) is set on the two front end plates, and the center lines of the pin holes (11) on the two front end plates are collinear; the pin hole (11) at the rear end of the V-shaped single chain plate (1) is set on the two vertical plates of the U-shaped rear end plate, and the center lines of the two pin holes (11) on the U-shaped rear end plate are collinear.

4. A steel pin chain according to claim 2, characterized in that, Both of the intermediate plates have inverted L-shaped connecting plates (7) bolted to their outer sides, and the conveying plates (5) are bolted to the horizontal plates of the two inverted L-shaped connecting plates (7).

5. A steel pin chain according to claim 2, characterized in that, Rollers (9) are fitted on the pins (2) on the inner side of the U-shaped rear end plate, and inner pads (8) are fitted on the pins (2) between the two ends of the rollers (9) and the two vertical plates of the U-shaped rear end plate.

6. A steel pin chain according to claim 1, characterized in that, The spherical elastic element (3) is a spherical or elliptical structure and includes an upper hemispherical shell (31), a lower hemispherical shell (32) and a middle partition (33). The middle partition (33) is installed between the upper hemispherical shell (31) and the lower hemispherical shell (32). The upper hemispherical shell (31) and the lower hemispherical shell (32) are filled with a high-elastic rubber layer (34). A component through hole in a straight line is provided at the center of the upper hemispherical shell (31), the lower hemispherical shell (32) and the middle partition (33). The pin (2) passes through the component through hole of the spherical elastic element (3).

7. A steel pin chain according to claim 6, characterized in that, The upper hemispherical shell (31), the lower hemispherical shell (32), and the middle partition (33) are all made of elastic steel plate.

8. A steel pin chain according to claim 5, characterized in that, The inner pad (8) is also provided with a pin through hole at the center, and the pin (2) passes through the pin through hole of the inner pad (8); the outer end face of the inner pad (8) outside the pin through hole is also provided with an annular limiting protrusion, and the annular limiting protrusion of the inner pad (8) is inserted from the inner side of the vertical plate of the U-shaped rear end plate into the gap between the pin hole (11) and the pin (2) of the U-shaped rear end plate of the V-shaped single chain plate (1).

9. A steel pin chain according to claim 8, characterized in that, The outer wall of the annular limiting protrusion has a bowl-shaped arc structure. The pin hole (11) of the U-shaped rear end plate is composed of a central cylindrical hole and two flared ends. The flared ends have a trumpet-shaped structure. The front end of the annular limiting protrusion is engaged with the flared end of the pin hole (11) of the U-shaped rear end plate, or engaged with the flared end of the pin hole (11) of the U-shaped rear end plate and the central cylindrical hole.

10. A steel pin chain according to claim 8, characterized in that, The limiting and fixing plate (7) and its annular limiting protrusion, and the inner pad plate (8) and its annular limiting protrusion are all made using an integral molding technology.

Images