Oiling-free lateral bending type conveying chain

Abstract

The utility model discloses an oiling-free lateral bending type conveying chain which mainly comprises a plurality of chain link units and two outer chain pieces connected to every two chain link units. Wherein an auxiliary piece is fixedly arranged in the lining of each chain link unit, the auxiliary piece is made of plastic materials and allows the pin shaft to penetrate through, and meanwhile the hole diameter of the auxiliary piece is larger than the shaft diameter of the pin shaft. Therefore, through the arrangement of the auxiliary part, the pin shaft can be prevented from being in direct contact and friction with the inner wall of the lining, meanwhile, the conveying chain does not need to be soaked in grease, and therefore the situation that the grease splashes in the conveying process to pollute objects conveyed by the conveying chain and the like can be avoided, and under the effect of the low friction coefficient of the auxiliary part, the conveying chain is not damaged. And the wear resistance of the lining can be improved, so that the service life of the conveying chain is prolonged.

Description

Technical Field

[0001] This utility model relates to a conveyor chain design, specifically an oil-free, side-bending conveyor chain. Background Technology

[0002] Conveyor chains offer numerous advantages, including high load-bearing capacity and stable transport, making them widely used in various industries such as logistics, food processing, automotive, and electronics. They are frequently used to transport a wide variety of goods to improve overall production efficiency and reduce labor costs. (See also...) Figure 1 , Figure 2 The existing conveyor chain 1 includes multiple chain link units 11 and two outer chain plates 12 respectively connected to each chain link unit 11. Each chain link unit 11 has two inner chain plates 111, two bushings 112 respectively disposed between the multiple inner chain plates 111, rollers 113 respectively pivotally mounted on each bushing 112, and two pins 114 respectively passing through the bushing 112. The bushing 112 has a through hole 1121 surrounded by an inner wall 1121A, and the through hole 1121 allows the pins 114 to pass through, so that after the pins 114 are passed through, the two ends of the pins 114 are respectively connected to the outer chain plates 12. Furthermore, if the conveyor chain 1 is not considered to require a flexible state during use, the shaft diameter of the pin 114 is approximately equal to the bore diameter of the inner wall 1121A, so that the chain link unit 11 cannot bend at any angle. Conversely, when the conveyor chain 1 is used and a flexible state is required, the bore diameter of the inner wall 1121A is approximately larger than the shaft diameter of the pin 114, so that the pin 114 can be displaced within the bushing 112. However, since the focus of this application is to improve the side-bending type conveyor chain 1, the following comparison is made with the example that the bore diameter of the inner wall 1121A of the bushing 112 is approximately larger than the shaft diameter of the pin 114.

[0003] Furthermore, to improve the contact and lubrication between the pin 114 and the bushing 112, the existing conveyor chain 1 must undergo a grease impregnation step after assembly to form a grease layer B on the surface of the bushing 112. While this grease layer B allows for smoother operation of the pin 114 and reduces excessive wear between it and the bushing 112, actual use has revealed that when each chain link 11 conveys an item along the conveyor track (not shown) and undergoes lateral bending during transport, the... The pin 114 will be displaced within the perforation 1121, causing friction with the inner wall 1121A. The heat generated by this friction will melt the grease layer B on the inner wall 1121A, causing the grease layer B to change from a solid state to a liquid state. Consequently, this grease is prone to splashing during the conveyor chain 1, thus contaminating the conveyed items on the conveyor chain 1. Furthermore, the direct friction between the pin 114 and the inner wall 1121A will eventually cause wear on the inner wall 1121A, affecting its service life. This situation needs to be improved. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an oil-free, side-bending conveyor chain, which can increase service life and avoid defects such as grease splashing and contamination during the conveying process.

[0005] Therefore, this utility model provides an oil-free, side-bending conveyor chain, which includes multiple chain link units and two outer chain plates respectively connected to each two chain link units; wherein, each chain link unit has two inner chain plates, two bushings respectively disposed between the multiple inner chain plates, rollers respectively pivotally mounted on each bushing, and two pins respectively passing through the bushing, wherein the bushing has a through hole surrounded by an inner wall, and the through hole allows the pins to pass through, and the two ends of the pins after passing through are respectively connected to the inner and outer chain plates, and the diameter of the hole in the inner wall is larger than the shaft diameter of the pin;

[0006] Each bushing contains an auxiliary component made of plastic, which is fixed to the inner wall. The auxiliary component has a through-hole for the pin to pass through. The diameter of the through-hole is larger than the diameter of the pin, so that the pin can be displaced within the through-hole. As a result, during the conveyor chain transport process, multiple chain link units can bend at different angles as needed.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] By fixing the auxiliary component to the inner wall of the bushing, the conveyor chain does not need to be soaked in lubricating oil, thus providing sufficient lubrication between the pin and the auxiliary component. Therefore, during the side bending process, each chain link unit can not only avoid the pin moving and directly rubbing against the inner wall to generate heat, which would lead to grease splashing, contamination, and other defects, but also effectively improve the wear resistance of the bushing, thereby increasing the service life of the conveyor chain. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of an existing conveyor chain.

[0010] Figure 2 This is a cross-sectional schematic diagram of an existing conveyor chain.

[0011] Figure 3 This is a three-dimensional schematic diagram of the conveyor chain of this utility model.

[0012] Figure 4 This is a cross-sectional schematic diagram of the conveyor chain of this utility model.

[0013] Figure 5 This is a schematic cross-sectional view of the conveyor chain of this utility model in a side-bent state.

[0014] Symbol explanation:

[0015] (Prior art)

[0016] 1: Conveyor chain

[0017] 11: Link Unit

[0018] 12: External Links

[0019] 111: Internal Link Piece

[0020] 112: Bushing

[0021] 113: Roller

[0022] 114: Pin

[0023] 1121: Perforation

[0024] 1121A: Inner wall

[0025] B: Oil layer

[0026] (This utility model)

[0027] 3: Conveyor chain

[0028] 31: Link Unit

[0029] 32: External link

[0030] 311: Internal Link Piece

[0031] 312: Bushing

[0032] 313: Roller

[0033] 314: Pin

[0034] 321: Chain link hole

[0035] 3121: Perforation

[0036] 3122: Auxiliary parts

[0037] 3121A: Inner wall

[0038] 3122A: Transition Space Detailed Implementation

[0039] The foregoing and other technical contents, features and effects of this utility model will become clear in the following detailed description of the preferred embodiments with reference to the accompanying drawings.

[0040] See Figure 3 , Figure 4 In a preferred embodiment of this utility model, the oil-free, side-bending conveyor chain 3 is mainly used in a conveying device (not shown in the figure). This conveying device, in this embodiment, has a conveying track (not shown) for the conveyor chain 3 to run on. Furthermore, the conveyor chain 3 in this embodiment includes multiple link units 31 and two outer chain plates 32 respectively connected to each pair of link units 31. Each outer chain plate 32 has two chain plate holes 321. Each link unit 31 has two inner chain plates 311, two bushings 312 disposed between the multiple inner chain plates 311 and having a through hole 3121 inside, and rollers 313 pivotally mounted on each bushing 312. And two pins 314 respectively inserted into the bushing 312, wherein a plurality of inner chain pieces 311 are located between a plurality of outer chain pieces 32, and each inner chain piece 311 corresponds to one of the chain piece holes 321 of each outer chain piece 32; each pin 314 can pass through the through hole 3121, and after passing through, both ends of the pin 314 are respectively connected to one of the chain piece holes 321 of the inner chain piece 311 and the outer chain piece 32. In this embodiment, the pin 314 simultaneously passes through the through hole 3121, the inner chain piece 311, and one of the chain piece holes 321 of the outer chain piece 32, and the inner chain piece 311 is pivotally mounted on the pin 314, while the outer chain piece 32 is fixedly mounted on the pin 314.

[0041] Continuing from the above, the through hole 3121 inside the bushing 312 is surrounded by an inner wall 3121A, and the diameter of the hole in the inner wall 3121A is larger than the shaft diameter of the pin 314. In addition, an auxiliary member 3122 fixed to the inner wall 3121A is formed inside each bushing 312. The auxiliary member 3122 is made of plastic and has a through space 3122A. The through space 3122A allows the pin 314 to pass through, and the diameter of the through space 3122A is larger than the shaft diameter of the pin 314 so that the pin 314 can be displaced in the through space 3122A.

[0042] See Figure 3 , Figure 5 When the conveying device (not shown) transports items, the conveying chain 3 is driven by the conveying device, and multiple rollers 313 move on the conveying track (not shown). When encountering a curved conveying track, multiple chain link units 31 bend laterally. At the same time, each pin 314 will be displaced in the through space 3122A and rub against the fixed auxiliary component 3122. However, since the auxiliary component 3122 is made of plastic, the coefficient of friction of the auxiliary component 3122 is low, and it has been measured to have a considerable degree of self-lubrication. That is, without the need for grease, the pin 314 and the auxiliary component... The bushing 3122 has considerable lubricity, so the contact between the pin 314 and the auxiliary component 3122 will not generate excessive resistance, and it can still move smoothly in the passage space 3122A. Since it does not need to be wetted with grease, no grease layer will be generated on the inner wall 3121A. Correspondingly, the inner wall 3121A will not be lost due to the solidified grease layer melting into liquid and splashing. This can effectively prevent multiple items (not shown in the figure) on the conveyor chain 3 from being contaminated, or even causing environmental mess. In addition, it can improve the wear resistance of the bushing 312, thereby increasing the service life of the conveyor chain 3.

[0043] Continuing from the foregoing, after the oil-free side-bending conveyor chain 3 of this embodiment is assembled, there is no need to perform additional lubrication with the lubricating oil to achieve the effect of increasing the lubrication between the pin 314 and the inner wall 3121A. Finally, in order to ensure that the conveyor chain 3 has better rust prevention, the conveyor chain 3 can still be immersed in rust-preventive oil after assembly to further prevent the conveyor chain 3 from rusting during use.

[0044] In summary, the oil-free, side-bending conveyor chain of this invention mainly utilizes an auxiliary component made of plastic fixed to the inner wall. This allows the conveyor chain to maintain lubrication between the pin and the auxiliary component without being soaked in any lubricating oil. Therefore, when the conveyor chain bends during the conveying process, direct friction between the pin and the inner wall can be avoided. As a result, there is no grease splashing or loss, and the auxiliary component also improves the wear resistance of the pin's operation, thereby increasing the service life of the conveyor chain.

[0045] The above description is only for illustrating preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the contents of the utility model specification should still fall within the scope of the present utility model patent.

Claims

1. A non-oiling, side-bending conveyor chain, comprising multiple link units and two outer chain plates respectively connected to each pair of link units; wherein, Each link unit has two inner chain links, two bushings disposed between the inner chain links, rollers pivotally mounted on each bushing, and two pins respectively inserted into the bushings. The bushings have a through hole encircled by an inner wall, through which the pins can pass. The two ends of the inserted pins are respectively connected to the inner and outer chain links. The diameter of the hole in the inner wall is larger than the diameter of the pin. Each bushing contains an auxiliary component made of plastic, which is fixed to the inner wall. The auxiliary component has a through-hole for the pin to pass through. The diameter of the through-hole is larger than the diameter of the pin, so that the pin can be displaced within the through-hole. As a result, during the conveyor chain transport process, multiple chain link units can bend at different angles as needed.

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