Buffer type pushing chain
By optimizing the four-way meshing of the chain plates and the buffered push chain with polyurethane rubber filling inside the pin shaft, the problems of high noise, low load, and short stroke in the logistics transportation field have been solved, achieving a transmission effect of low noise, high load, and long stroke, and improving transmission stability and adaptability.
Patent Information
- Application Number
- CN202423100793.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing transmission structures in the logistics and transportation field suffer from problems such as high noise, low load capacity, and short travel distance. They are also unsuitable for non-clean environments, have high transmission costs, and poor adaptability.
A buffered push chain is designed, which optimizes the tooth profile and pin components of the traditional rigid chain by using a four-way meshing structure of the chain plates and polyurethane rubber filling inside the pins to form a four-way meshing and vibration reduction structure, thereby reducing noise and increasing load and stroke.
It significantly reduces transmission noise, increases load and stroke, improves transmission stability and adaptability, reduces maintenance costs, and is suitable for non-clean environments.
Smart Images
Figure CN223479977U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of chain drive technology, specifically relating to a buffered push chain. Background Technology
[0002] Currently, intelligent automated warehouses, automatic sorting machines, and integrated intelligent equipment used in logistics transportation mostly employ rollers, belts, hydraulic systems, and roller chains for traction, drive, steering, and conveying transmission structures. These traditional methods have several drawbacks: their structures are not only cumbersome and complex, but also lack quiet operation, have short transmission distances, and high operating and maintenance costs. Furthermore, these transmission methods are best suited for relatively clean and dust-free environments and have poor environmental adaptability. On the other hand, toothed belt drives, which have wider applications and quieter operation, suffer from issues such as low load-bearing capacity. Utility Model Content
[0003] This invention discloses a buffered push chain, which aims to improve the problems of high noise, low load, and short stroke during transmission. Based on the traditional rigid chain, the structure of the tooth and pin components is optimized, so as to realize the technical advantages of low noise, high load and long stroke when applied to actual working conditions, significantly improve the transmission effect in the field of logistics transportation, and effectively improve the transmission limitations and transmission stability of the chain.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows:
[0005] A buffer-type push chain includes meshing chains A and B. Chains A and B have identical structures, both assembled from chain plates and pins of the same structural dimensions. The structure of chains A and B includes: two chain plates arranged side by side forming an inner link, and two chain plates arranged opposite each other forming an outer link. Each chain plate has two connecting holes. The two chain plates of the outer link are connected by two pins. The two ends of the pins are interference-fitted with the corresponding connecting holes. The two pins of the outer link pass through the connecting holes of adjacent chain plates of adjacent inner links and are clearance-fitted with the connecting holes of the inner links. The inner and outer links are alternately connected to form chain A or chain B. The chain plates have a four-way meshing structure. The pins are hollow shafts filled with vibration-damping material.
[0006] Preferably, the upper and lower ends of the chain plate are horizontal structures. The chain plate includes a connecting part for connecting with the pin shaft and an engaging part extending upward along the upper end of the connecting part. The left side of the engaging part is provided with a first concave tooth and a second concave tooth arranged vertically, and the right side is provided with a first convex tooth and a second convex tooth arranged vertically. When chain A and chain B are engaged, the first concave tooth of the chain plate of chain A or chain B engages with the second convex tooth of the adjacent chain plate of chain B or chain A on the opposite side, and the second concave tooth of the chain plate of chain A or chain B engages with the first convex tooth of the adjacent chain plate of chain B or chain A on the opposite side, thus forming a four-way engagement structure. The four-way engagement structure restricts the vertical and horizontal movement between the engaging convex and concave teeth.
[0007] Preferably, both ends of the pin protrude from the surface of the chain plate of the outer chain link, forming a transmission structure that cooperates with the sprocket.
[0008] Preferably, the inner hole of the pin is formed into a stepped hole structure by intermittently expanding its diameter.
[0009] Preferably, the vibration damping material is polyurethane rubber filled within the stepped hole structure.
[0010] Preferably, the first and second protruding teeth are produced by high-frequency quenching, with a hardness range of 54-59 HRC.
[0011] Preferably, the effective arc radius of the first convex tooth, the second convex tooth, the first concave tooth, and the second concave tooth is R0.12-R0.15mm.
[0012] Preferably, the Shore hardness range of the polyurethane rubber after vulcanization and filling is A64-A74.
[0013] The beneficial effects of this novel buffered push chain are as follows:
[0014] 1. This new type of transmission uses the interlocking of chain plates to form a four-way interlocking structure, thereby effectively eliminating transmission gaps; the pin shaft is filled with polyurethane rubber, which can greatly reduce load resonance and reduce transmission noise during transmission.
[0015] 2. This new type of chain optimizes the structure of the toothed and pin components based on the traditional rigid chain, thereby achieving the technical advantages of low noise, high load and long stroke when applied to actual working conditions. It significantly improves the transmission effect in the field of logistics transportation and effectively improves the transmission limitations and transmission stability of the chain. Attached Figure Description
[0016] Figure 1 This is an assembly drawing of a buffered push chain viewed from the front.
[0017] Figure 2 This is a top-view assembly diagram of a buffered push chain.
[0018] Figure 3 This is a structural diagram of the chain plate.
[0019] Figure 4 This is a schematic diagram of a cross-sectional structure of a buffered push chain pin.
[0020] Figure 5 This is a schematic diagram of a polyurethane rubber molding structure filled inside the pin of a buffer-type push chain.
[0021] Figure 6 This is a schematic diagram of a buffered push chain drive.
[0022] 01. Chain A; 02. Chain B; 1. Chain plate; 1-1. First convex tooth; 1-2. Second convex tooth; 1-3. First concave tooth; 1-4. Second concave tooth; 2. Pin; 3. Stepped hole structure; 4. Polyurethane rubber; 5. Sprocket; 6. Chain plate of outer link; 7. Chain plate of inner link. Detailed Implementation
[0023] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
[0024] The following embodiments can be understood as a part of the local structure or method of the present invention, or as a combination of embodiments to explain the connotation of a larger range of structures or methods of the present invention.
[0025] In this embodiment, a buffered push chain, such as Figure 1-6 As shown, the chain includes a meshing chain A01 and a chain B02. Chains A01 and B02 have the same structure, both assembled from chain plates 1 and pins 2 of the same structural dimensions. The structure of chains A01 and B02 includes: two chain plates 1 arranged side by side forming an inner link, and two chain plates 1 arranged opposite each other forming an outer link. Each chain plate 1 has two connecting holes. The two chain plates 1 of the outer link are connected by two pins 2. The two ends of the pins 2 are interference-fitted with the corresponding connecting holes. The two pins 2 of the outer link pass through the adjacent chain plate connecting holes of the adjacent inner link and are clearance-fitted with the connecting holes of the inner link. The inner and outer links are alternately connected to form chain A01 or chain B02. The chain plates 1 have a four-way meshing structure. The pins 2 are hollow shafts filled with vibration damping material.
[0026] In a further embodiment, such as Figure 3As shown, the upper and lower ends of the chain plate 1 are horizontal structures. The chain plate 1 includes a connecting part for connecting with the pin shaft and an engaging part extending upward along the upper end of the connecting part. The left side of the engaging part is provided with a first concave tooth 1-3 and a second concave tooth 1-4 arranged vertically, and the right side is provided with a first convex tooth 1-1 and a second convex tooth 1-2 arranged vertically. When chain A01 and chain B02 are engaged, the first concave tooth 1-3 of the chain plate of chain A01 or chain B02 engages with the second convex tooth 1-2 of the adjacent chain plate 1 of chain B or chain A on the opposite side, and the second concave tooth 1-4 of the chain plate of chain A or chain B engages with the first convex tooth 1-1 of the adjacent chain plate of chain B or chain A on the opposite side, thus forming a four-way engagement structure. The four-way engagement structure restricts the vertical and horizontal movement between the engaging convex and concave teeth. It can be understood that after engagement, chain A01 and chain B02 form a "steel column" structure, which can withstand axial and various lateral forces.
[0027] In a further embodiment, such as Figure 6 As shown, both ends of the pin 2 protrude from the surface of the chain plate 1 of the outer chain link and form a transmission structure that cooperates with the sprocket 5.
[0028] In a further embodiment, such as Figure 4 , 5 As shown, the inner hole of the pin 2 is formed into a stepped hole structure 3 by intermittently expanding its diameter.
[0029] In a further embodiment, such as Figure 4 , 5 As shown, the vibration damping material is polyurethane rubber 4 filled in the stepped hole structure 3.
[0030] In a further embodiment, such as Figure 1-6 As shown, the first protrusion 1-1 and the second protrusion 1-2 are manufactured using a high-frequency quenching process, with a hardness range of 54-59 HRC.
[0031] In a further embodiment, such as Figure 1-6 As shown, the effective arc radius of the first convex tooth 1-1, the second convex tooth 1-2, the first concave tooth 1-3, and the second concave tooth 1-4 is R0.12-R0.15mm.
[0032] In a further embodiment, such as Figure 1-6 As shown, the Shore hardness range of the polyurethane rubber 4 after vulcanization and filling is A64-A74.
[0033] The working principle of this new type:
[0034] 1. When chain A and chain B of this new type mesh, the convex and concave teeth of chain A and chain B form a stable structure that interlocks in four directions (up, down, left, and right), which effectively improves the meshing characteristics of the chain plates, eliminates transmission gaps to the maximum extent, and makes the chain run with uniform force.
[0035] 2. The first protruding tooth 1-1 and the second protruding tooth 1-2 of this new type adopt high-frequency quenching process, with a hardness range of 54-59HRC. This design effectively strengthens the fatigue strength of the stressed parts, improves the overall life of the chain, increases its wear resistance, and prolongs its service life.
[0036] 3. The inner hole of the new type of pin 2 is formed by intermittently expanding the diameter to form a stepped hole structure 3, and the inside is filled with polyurethane rubber 4 with high strength and adhesion. The advantage of polyurethane rubber 4 is that its wear resistance is enhanced, up to 6-8 times that of conventional industrial rubber. The purpose of this design is to absorb the vibration generated by the whole chain drive to a great extent and reduce the overall noise of the chain.
[0037] 4. The inner hole of the pin 2 is expanded at intervals to form a stepped hole structure 3, which constitutes a guide groove for adhesive. The hot rubber after vulcanization melts into the guide groove of the pin, which improves the adhesion and curing force of the rubber after cooling and strengthens the adhesion.
[0038] 5. For example Figure 6 As shown, during chain drive, pin 2 meshes with sprocket 5, and the two sprockets 5 perform synchronous pushing or contracting movements in the same or opposite directions, thereby realizing power transmission.
Claims
1. A buffered push chain, characterized in that: The system includes meshing chains A and B, which have identical structures and are assembled from chain plates and pins of the same dimensions. The structure of chains A and B includes: two side-by-side chain plates forming an inner link, and two opposing chain plates forming an outer link. Each chain plate has two connecting holes. The two chain plates of the outer link are connected by two pins, with both ends of the pins interference-fitted to the corresponding connecting holes. The two pins of the outer link pass through the connecting holes of adjacent chain plates of adjacent inner links and have clearance fits with the connecting holes of the inner links. The inner and outer links are alternately connected to form chain A or chain B. The chain plates have a four-way meshing structure, and the pins are hollow shafts filled with vibration-damping material.
2. The buffered push chain as described in claim 1, characterized in that: The chain plate has a horizontal structure at its upper and lower ends. The chain plate includes a connecting part for connecting with a pin and an engaging part extending upward along the upper end of the connecting part. The left side of the engaging part is provided with a first concave tooth and a second concave tooth arranged vertically, and the right side is provided with a first convex tooth and a second convex tooth arranged vertically. When chain A and chain B are engaged, the first concave tooth of the chain plate of chain A or chain B engages with the second convex tooth of the adjacent chain plate of chain B or chain A on the opposite side, and the second concave tooth of the chain plate of chain A or chain B engages with the first convex tooth of the adjacent chain plate of chain B or chain A on the opposite side, thus forming a four-way engagement structure. The four-way engagement structure restricts the vertical and horizontal movement between the engaging convex and concave teeth.
3. The buffered push chain as described in claim 1, characterized in that: Both ends of the pin protrude from the surface of the chain plate of the outer chain link, forming a transmission structure that cooperates with the sprocket.
4. A buffered push chain as described in any one of claims 1-3, characterized in that: The inner hole of the pin is formed into a stepped hole structure by intermittently expanding its diameter.
5. A buffered push chain as described in claim 4, characterized in that: The vibration damping material is polyurethane rubber filled within the stepped hole structure.
6. A buffered push chain as described in claim 2, characterized in that: The first and second protruding teeth are manufactured using a high-frequency quenching process, with a hardness range of 54-59 HRC.
7. A buffered push chain as described in claim 2, characterized in that: The effective arc radius of the first convex tooth, the second convex tooth, the first concave tooth, and the second concave tooth is R0.12-R0.15mm.
8. A buffered push chain as described in claim 5, characterized in that: The Shore hardness range of the polyurethane rubber after vulcanization and filling is A64-A74.