High-wear-resistance rubber shifting tooth chain for agricultural machinery

Abstract

A high-wear-resistance rubber shifting tooth chain for agricultural machinery relates to the technical field of chain transmission and comprises a chain body, an attaching plate arranged on the chain body and a rubber block connected with the attaching plate, the attaching plate comprises a connecting portion used for being connected with the chain body and a seedling shifting portion integrally formed on the rear side of the top of the connecting portion and inclined towards the rear upper portion, and the connecting portion is connected with the connecting portion. The seedling pulling part is of a U-shaped groove plate structure with the front end and the upper end open, the rubber block is connected with the U-shaped groove plate structure through a bolt and nut assembly, and the front end of the rubber block protrudes out of the front end of the seedling pulling part. According to the novel attaching plate, the rubber block can be firmly restrained and fixed, fracture or falling caused by stress concentration in the using process of the rubber block is prevented through the structural design, and the service life of the rubber block is effectively prolonged. The connecting part of the attaching plate is arranged above the pin shaft, so that the situation that the chain body is blocked by weeds can be effectively prevented.

Description

Technical Field

[0001] This invention relates to the field of chain drive technology, specifically to a high wear-resistant rubber toothed chain for agricultural machinery. Background Technology

[0002] Currently, the rubber reeling chains used in domestic agricultural harvesting machinery have a pitch of 38mm. These chains have attached plates that are bent into a beak shape. During operation, the attached plates contact the stems of the crops, and the rotation of the chain pulls the crops into the harvester. These chains are used in pairs; the attached plates are staggered to work together to pull the crops into the harvester.

[0003] This type of reeling chain has an overall attachment plate structure consistent with conventional reeling chains. It is used for harvesting crops with a moisture content typically around 60%-70%, such as sweet corn. However, the beak-like structure of conventional reeling chain attachment plates cannot adequately constrain and secure the rubber blocks, causing them to easily detach or break, thus affecting their lifespan. Although there are many rubber reeling chains for corn harvesters on the market, existing products do not meet the required wear resistance and lifespan, and are prone to clogging the chain with weeds. Therefore, there is an urgent need to develop products that meet market demands. Utility Model Content

[0004] This invention discloses a high wear-resistant rubber toothed chain for agricultural machinery, which aims to solve the problems existing in the prior art described in the background section.

[0005] To achieve the above objectives, the technical solution of this invention is as follows:

[0006] A high wear-resistant rubber toothed chain for agricultural machinery includes a chain body, an attachment plate disposed on the chain body, and a rubber block connected to the attachment plate. The attachment plate includes a connecting part for connecting to the chain body, and a reaping part integrally formed on the top rear side of the connecting part and inclined to the rear and upward. The reaping part is a U-shaped groove plate structure with an open front end and upper end. The rubber block is connected to the U-shaped groove plate structure by a bolt and nut assembly, and the front end of the rubber block protrudes from the front end of the reaping part.

[0007] Preferably, the rubber block is a forward-convex arc-shaped structure, with a stepped tube structure running through it. The rear end of the stepped tube structure passes through the rear wall of the reeling part and is fixedly connected to the rear wall of the reeling part. The rear end of the stepped tube structure is flush with the rear surface of the reeling part. A bolt is inserted into the stepped tube, with the head of the bolt housed in the large-diameter section of the stepped tube structure. The shank of the bolt passes through the stepped tube structure and is locked with a nut.

[0008] Preferably, the rubber block is made of wear-resistant rubber material, and the front end of the rubber block is provided with anti-slip texture.

[0009] Preferably, the attached plate includes two connecting parts arranged opposite each other, and the top rear side of the two connecting parts is integrally connected to the hoe-pulling part. The front and rear sides of the top of the hoe-pulling part are chamfered, and the connecting parts are provided with two first connecting holes.

[0010] Preferably, the chain body includes alternating inner and outer links. The inner link is assembled from an inner link plate, a sleeve, and a roller. The outer link is assembled from a pin and an outer link plate. The inner and outer links are connected in series by a pin. The auxiliary plates are evenly spaced on the chain body. The connecting part of the auxiliary plate replaces the position of the outer link plate. The first connecting hole is interference-fitted with the corresponding pin end.

[0011] Preferably, the reaping section is located above the pin connecting the rear end of the connecting section, and the angle between the rear end of the connecting section and the line connecting the centers of the two first connecting holes is 75°.

[0012] Preferably, the height of the attached plate is 63mm and the width of the hoe-pulling part is 29mm.

[0013] The beneficial effects of this new type of high wear-resistant rubber toothed chain for agricultural machinery:

[0014] 1. The reeling part of this new type of auxiliary plate is a U-shaped groove plate structure. Through cooperation with the stepped tube and bolt and nut assembly, it can achieve firm constraint and fixation of the rubber block. Through structural design, it can prevent the rubber block from breaking or falling off due to stress concentration during use, effectively extend the service life of the rubber block and reduce maintenance costs.

[0015] 2. The connecting part of the new type of auxiliary plate is located above the pin shaft, which can effectively prevent weeds from clogging the chain body. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this invention, the accompanying drawings used in the embodiments are briefly described below, which constitute a part of the specification and are used together with the embodiments of this invention to explain this invention, but do not constitute a limitation on this invention.

[0017] Figure 1 A side view of the chain body structure of this novel invention;

[0018] Figure 2 A top view of the chain body structure of this novel invention;

[0019] Figure 3 A schematic diagram of the front view of the chain body of this novel invention;

[0020] Figure 4 A schematic diagram of the cross-sectional structure of this novel structure along the AA direction;

[0021] Figure 5A schematic diagram of the improved structure of this novel rubber block;

[0022] Figure 6 A front view structural diagram of this novel rubber block.

[0023] 1. Chain body; 2. Rubber block; 3. Auxiliary plate; 4. Rubber block before improvement; 5. Rubber block after improvement; 6. Stepped hole; 7. Stepped tube structure; 8. Inner chain plate; 9. Roller; 10. Pin; 11. Sleeve; 12. Outer chain plate; 31. Connecting part; 32. Reeling part. Detailed Implementation

[0024] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0025] The following embodiments can be understood as explaining a partial structure of the present invention individually, or as explaining a larger structure of the present invention through a combination of multiple embodiments.

[0026] Example 1

[0027] A type of high wear-resistant rubber toothed chain for agricultural machinery, such as Figures 1-6 As shown, the system includes a chain body 1, an attachment plate 3 mounted on the chain body 1, and a rubber block 2 connected to the attachment plate 3. The attachment plate 3 includes a connecting part 31 for connecting to the chain body 1, and a lifting part 32 integrally formed on the rear side of the top of the connecting part 31 and inclined rearward and upward. The lifting part 32 is a U-shaped groove plate structure with an open front end and upper end. The rubber block 2 is connected to the U-shaped groove plate structure by a bolt and nut assembly, and the front end of the rubber block 2 protrudes from the front end of the lifting part 32. The chain body transmits power and also serves as the carrier for the attachment plate. The attachment plate provides a carrier and constraint for the rubber block. The attachment plate prevents the rubber block from shaking, unlike the beak structure, and prevents stress concentration at the head of the rubber block, which could cause the rubber block to break.

[0028] Example 2

[0029] like Figure 5 , Figure 6As shown, the rubber block 2 is a forward-convex arc-shaped structure (improved rubber block 5). A stepped tube structure 7 runs through the rubber block 2. The rear end of the stepped tube structure 7 passes through the rear wall of the reeling part 32 and is fixedly connected to the rear wall of the reeling part 32. The rear end of the stepped tube structure 7 is flush with the rear surface of the reeling part 32. A bolt is inserted into the stepped tube. The head of the bolt is accommodated in the large inner diameter section of the stepped tube structure 7. The shank of the bolt passes through the stepped tube structure 7 and is locked with a nut.

[0030] In this embodiment, the stepped tube structure is fixedly connected to the reeling part, thus achieving a firm constraint on the rubber block. The stepped tube structure itself also forms the stepped holes 6 opened on the rubber block (the large inner diameter section is 12mm in diameter, and the small inner diameter section is 8.4mm in diameter). Further strengthening the connection between the rubber block and the connecting part by inserting bolts and locking them with nuts (additionally achieving double reinforcement on top of the constraint provided by the U-shaped groove plate structure) further enhances the connection strength and prevents detachment during use. The rubber block has an overall arc-shaped structure, allowing for better conformity with the crop and facilitating harvesting. In this embodiment, the bolt and nut torque is 9-11 N·m, which is sufficient to support the rubber block and prevent deformation.

[0031] Example 3

[0032] like Figure 5 , Figure 6 As shown, the rubber block 2 is made of wear-resistant rubber material, and the front end of the rubber block 2 is provided with anti-slip texture. The anti-slip texture with patterned lines on the contact surface can increase the roughness and the contact area with the crop, which helps to improve feeding efficiency.

[0033] Example 4

[0034] like Figures 1-4 As shown, the attached plate 3 includes two connecting parts 31 arranged opposite to each other. The top rear side of the two connecting parts 31 is integrally connected to the hoeing part 32. The front and rear sides of the top of the hoeing part 32 are chamfered. The connecting parts are provided with two first connecting holes.

[0035] Example 5

[0036] like Figures 1-4 As shown, the chain body 1 includes alternating inner and outer chain links. The inner chain link is assembled from an inner chain plate 8, a sleeve 11, and a roller 9. The outer chain link is assembled from a pin 10 and an outer chain plate 12. The inner and outer chain links are connected in series by the pin 10. The auxiliary plates 3 are evenly spaced on the chain body 1. The connecting part 31 of the auxiliary plate 3 replaces the position of the outer chain plate 12. The first connecting hole is interference-fitted with the corresponding end of the pin 10.

[0037] In this embodiment, the chain body is a roller chain structure, and its specific assembly method is existing technology and will not be described in detail.

[0038] Example 6

[0039] like Figure 1 As shown, the reeling part 32 is located above the pin 10 connected to the rear end of the connecting part 31, and the angle between the rear end of the connecting part 31 and the line connecting the centers of the two first connecting holes is 75°. The reeling part is usually located above the middle of the connecting part. By placing the reeling part above the pin, it prevents weeds from accumulating and clogging the gap between the lower end of the reeling part 32 and the two connecting parts 31. When weeds enter between the lower end of the reeling part and the corresponding roller, the rotation of the roller easily discharges the weeds.

[0040] Example 7

[0041] like Figure 1 As shown, the height of the attached plate 2 is 63mm, and the width of the reeling part 32 is 29mm.

Claims

1. A high wear-resistant rubber toothed chain for agricultural machinery, characterized in that: it includes a chain body, an attachment plate disposed on the chain body, and a rubber block connected to the attachment plate, wherein the attachment plate includes a connecting part for connecting to the chain body, and a reaping part integrally formed on the rear side of the top of the connecting part and inclined to the rear and upward, wherein the reaping part is a U-shaped groove plate structure with an open front end and an open upper end, and the rubber block is connected to the U-shaped groove plate structure by a bolt and nut assembly, wherein the front end of the rubber block protrudes from the front end of the reaping part.

2. The high wear-resistant rubber toothed chain for agricultural machinery as described in claim 1, characterized in that: The rubber block is a forward-convex arc-shaped structure with a stepped tube structure running through it. The rear end of the stepped tube structure passes through the rear wall of the reeling part and is fixedly connected to the rear wall of the reeling part. The rear end of the stepped tube structure is flush with the rear surface of the reeling part. A bolt is inserted into the stepped tube, and the head of the bolt is accommodated in the large inner diameter section of the stepped tube structure. The shank of the bolt passes through the stepped tube structure and is locked with a nut.

3. The high wear-resistant rubber toothed chain for agricultural machinery as described in claim 2, characterized in that: The rubber block is made of wear-resistant rubber material, and the front end of the rubber block has anti-slip texture.

4. The high wear-resistant rubber toothed chain for agricultural machinery as described in claim 3, characterized in that: the attached plate includes two connecting parts arranged opposite to each other, the top rear side of the two connecting parts is integrally connected to the hoeing part, the front and rear sides of the top of the hoeing part are chamfered, and the connecting part is provided with two first connecting holes.

5. The high wear-resistant rubber toothed chain for agricultural machinery as described in claim 4, characterized in that: The chain body includes alternating inner and outer links. The inner link is assembled from an inner link plate, a sleeve, and a roller. The outer link is assembled from a pin and an outer link plate. The inner and outer links are connected in series by the pin. The auxiliary plates are evenly spaced on the chain body. The connecting part of the auxiliary plate replaces the position of the outer link plate. The first connecting hole is interference-fitted with the corresponding pin end.

6. The high wear-resistant rubber toothed chain for agricultural machinery as described in claim 5, characterized in that: The reeling part is located above the pin connected to the rear end of the connecting part, and the angle between the rear end of the connecting part and the line connecting the center of the two first connecting holes is 75°.

7. The high wear-resistant rubber toothed chain for agricultural machinery as described in claim 6, characterized in that: The height of the attached plate is 63mm, and the width of the hoe-pulling part is 29mm.

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