CVT steel belt chain plate and method

Abstract

The invention discloses a CVT steel belt chain plate and a method, and belongs to the technical field of CVT chains, chain plate bodies are mutually matched through convex columns and grooves, the upper ends and the lower ends of the front side and the rear side of the lower portion of each chain plate body are each of an arc-shaped face structure, the middle portion of each chain plate body is of a plane structure, the curvatures of the front-back opposite arc-shaped face structures are not equal, and when the front-back opposite arc-shaped face structures are matched, a swing space is formed. When the steel belt chain runs, the concave arc-shaped surface and the convex arc-shaped surface which are adjacent front and back are matched with each other within a certain range to realize swinging motion, so that compared with a traditional steel belt chain, the steel belt chain has the characteristics of high transmission precision, accurate swinging range, good steel belt flexibility, uniform thrust transmission and low noise.

Description

Technical Field

[0001] The present invention belongs to the technical field of CVT chains, and in particular relates to a CVT steel belt chain plate and a method. Background Art

[0002] CVT steel belt chain is mainly composed of steel belt chain plate and steel ring. Figure 5 As shown, the part where most steel belt chain plates match the cone wheel has a slight slope to one side, forming an inclined surface, and the upper part of the inclined surface is provided with a rocking edge protruding outward, so that there is a rocking space between the inclined surfaces of adjacent steel belt chain plates through the limitation of the rocking edge. The purpose of setting the rocking space is to adapt to the matching connection with the cone wheel and avoid hard damage to the steel belt chain. However, this traditional form has certain pain points. Its structure has a large impact load and weak silencing effect when it swings. It is also difficult to manufacture and has a high manufacturing cost. The noise is further increased when the torque is high. At the same time, the contact area with the cone wheel is small, resulting in low thrust transmission efficiency, especially: low transmission accuracy during the rocking process, inaccurate rocking range, poor flexibility of the steel belt, and uneven thrust transmission. Summary of the invention

[0003] The present invention discloses a CVT steel belt chain plate and method. The steel belt chain plate has a new structure different from the traditional technology, and forms a new swing mechanism based on the new structure, which can significantly reduce the impact noise in the transmission process of the CVT steel belt chain, improve the thrust transmission efficiency between the steel belt chain plates, and make the thrust of the steel belt chain evenly transmitted.

[0004] To achieve the above purpose, the technical solution of the present invention is:

[0005] A CVT steel belt chain link plate comprises a link plate body, wherein the link plate body comprises a top, a neck and a lower part, wherein the upper end of the front surface of the lower part constitutes a first arcuate surface A, and the lower end constitutes a second arcuate surface A, and a plane structure one is formed between the first arcuate surface A and the second arcuate surface A, and the upper end of the rear surface of the lower part constitutes a first arcuate surface B, and the lower end constitutes a second arcuate surface B, and a plane structure two is formed between the first arcuate surface B and the second arcuate surface B; between the lower parts of adjacent link plate bodies, a first swinging space is formed between the first arcuate surface A and the first arcuate surface B, and a second swinging space is formed between the second arcuate surface A and the second arcuate surface B, and the plane structure one and the plane structure two are clearance-matched, and the curvatures of the first arcuate surface A and the first arcuate surface B are different, and the curvatures of the second arcuate surface A and the second arcuate surface B are different.

[0006] Preferably, the first arc surface A and the second arc surface A are outer convex surfaces, the first arc surface B and the second arc surface B are inner concave surfaces, the top is a triangular structure, a convex column is provided at the front end of the top, a groove is provided at the rear end of the top, and adjacent convex columns and grooves are gap-matched.

[0007] Preferably, the neck is a plate-like structure, and the neck is integrally connected between the lower end of the top and the upper end of the lower part.

[0008] Preferably, the side wall surfaces of the lower portion are used to cooperate with the cone wheel of the CVT transmission system, and the side wall surfaces are provided with a friction tooth structure, and an oil storage tank is formed at the tooth groove of the friction tooth structure.

[0009] Preferably, the chain plate body is subjected to high frequency quenching treatment, and the degree range is 59-63HRC.

[0010] A swinging method for a CVT steel belt chain plate, comprising: due to the taper design of the cone wheel, when the chain plate body contacts the cone wheel, driven by the cone wheel, the upper end of the lower part of the chain plate body moves a distance one per unit time greater than the lower end of the lower part, so the link plate body swings, and the order of swinging is: the first arc surface A of the chain plate body swings forward first, and during the swinging process, the first arc surface A is tangent to the first arc surface B adjacent to the front side and slides relatively, thereby driving the plane structure one and the plane structure two adjacent to the front side to contact and transmit thrust, and also driving the second arc surface A and the second arc surface B to move forward. The distance between the two surfaces B is enlarged, so that the second swinging space is expanded. Due to the limiting effect of the convex column and the groove, when it swings to the extreme position, the second arc surface A begins to move toward the side of the second arc surface B, and is tangent to the second arc surface B and slides relatively, thereby driving the plane structure 1 and the plane structure 2 adjacent to the front side to change the contact position and continue to transmit the thrust, and at the same time, it also drives the distance between the first arc surface A and the first arc surface B adjacent to the front side to increase, so that the first swinging space is enlarged, and this cycle is repeated, and the same swinging form is transmitted between each adjacent chain plate body, so that the thrust of the cone wheel is evenly transmitted on the steel belt chain.

[0011] Preferably, when the swinging motion 1 between the first arcuate surface A and the first arcuate surface B and the swinging motion 2 between the second arcuate surface A and the second arcuate surface B are switched, the plane structure 1 and the plane structure 2 fit each other.

[0012] The beneficial effects of a CVT steel belt chain plate and method of the present invention are:

[0013] Compared with traditional steel belt chains, the present invention has the characteristics of high transmission accuracy, precise swing range, good steel belt flexibility, and uniform thrust transmission; in addition, the front and rear adjacent chain plate bodies of the present invention are meshed and transmitted with each other through concave and convex arc surfaces when swinging, forming a tangent structure between the arc surfaces, which can continuously realize the transmission of thrust, thereby improving the thrust transmission efficiency; the chain plate body of the present invention can be demolded from the same mold, which can greatly reduce the difficulty of processing and reduce processing costs during the processing. The present invention is designed as above and has a wide range of working conditions. It can be used under harsh working conditions such as low speed and high torque. During service, the chain plate bodies of the steel belt chain mesh with each other to perform swinging motion, with uniform transmission torque, high bearing capacity, and low noise, achieving a significant effect of weakening noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side structural diagram of the chain plate body of the present invention;

[0015] Figure 2 It is an assembly diagram between the chain plate bodies of the present invention;

[0016] Figure 3 It is a front view of the cooperation between the chain plate body and the cone wheel;

[0017] Figure 4 Isometric structural drawing of the chain plate body assembly;

[0018] Figure 5 It is a schematic diagram of the swing mechanism of the chain plate body of the existing steel belt chain.

[0019] 1. Top; 2. Boss; 3. Groove; 4. Neck; 5. First arc surface A; 6. Oil storage tank; 7. Plane structure one; 8. Friction tooth structure; 9. Second arc surface A; 10. Swinging space between the top of the chain plate body; 11. First swinging space; 12. Matching state between plane structure one and plane structure two during transition between swinging in two directions; 13. Second swinging space; 14. Lower part; 15. Contact parts between the two sides of the lower part and the cone wheel; 16. Cone wheel; 17. First arc surface B; 18. Plane structure two; 19. Second arc surface B; 01. Inclined surface of the lower part of the chain plate body of the existing steel belt chain; 02. Swinging edge; 03. Third swinging space. DETAILED DESCRIPTION

[0020] The following description is only 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 in the scope of protection of the present invention.

[0021] The following embodiments may be understood as individually expressing a part of a local structure or method of the present invention, or may be understood as a combination of the embodiments to explain the connotation of a larger structure or method of the present invention.

[0022] Example 1

[0023] A CVT steel belt chain plate, such as Figure 1-4 As shown, the chain plate body includes a top 1, a neck 4 and a lower part 14 (such as Figure 3 As shown), the improvement of the present invention lies in that: the upper end of the front surface of the lower part 14 constitutes a first arcuate surface A5, the lower end constitutes a second arcuate surface A9, and a plane structure 17 is between the first arcuate surface A5 and the second arcuate surface A9; the upper end of the rear surface of the lower part 14 constitutes a first arcuate surface B17, the lower end constitutes a second arcuate surface B19, and a plane structure 2 18 is between the first arcuate surface B17 and the second arcuate surface B19; between the lower parts 14 of adjacent chain plate bodies, a first swinging space 11 is formed between the first arcuate surface A5 and the first arcuate surface B17, and a second swinging space 13 is formed between the second arcuate surface A9 and the second arcuate surface B19; the plane structure 17 and the plane structure 2 18 are clearance-matched, the first arcuate surface A5 and the first arcuate surface B17 have different curvatures, and the second arcuate surface A9 and the second arcuate surface B19 have different curvatures. Among them, the arc radii of the first arc surface A5, the first arc surface B17, the second arc surface A9 and the second arc surface B19 are not unique, and can be adjusted accordingly according to the required swing angle and the number and thickness of the steel belt chain chain plate body.

[0024] Example 2

[0025] like Figure 1-4 As shown, the first arc surface A and the second arc surface A are outer convex surfaces, the first arc surface B and the second arc surface B are inner concave surfaces, the top 1 is a triangular structure, the front end of the top 1 is provided with a convex column 2, the rear end of the top 1 is provided with a groove 3, and the adjacent convex columns 2 and the groove 3 are clearance-matched. The cooperation of the convex column and the groove actually forms a limiting structure, which limits the spacing between the chain plate bodies on the one hand, and limits the limit of the swing angle of the chain plate bodies on the other hand.

[0026] like Figure 3 As shown, the neck 4 is a plate-like structure, and the neck 4 is integrally connected between the lower end of the top 1 and the top of the lower part 14. Both sides of the neck are used to install steel rings.

[0027] like Figure 3 As shown, the side wall surfaces of the lower portion 14 are used to cooperate with the cone wheel 16 of the CVT transmission system. The side wall surfaces are provided with a friction tooth structure 8 to increase the contact force with the cone wheel and transmit torque. An oil storage groove 6 is formed at the tooth groove of the friction tooth structure 8. The lubricating oil can enter the gap between the cone wheel and the chain plate body to achieve a lubrication effect and avoid rapid wear of the friction tooth structure.

[0028] like Figure 1-4As shown, the chain plate body is subjected to high-frequency quenching treatment, and the hardness range is 59-63HRC. The high-frequency quenching is performed in the area prone to wear, which effectively enhances the fatigue strength of the stressed parts, improves the overall life of the overall steel belt system, increases its wear resistance, and prolongs its service life.

[0029] Example 3

[0030] Based on the above embodiments, this embodiment discloses a swing method of a CVT steel belt chain link plate, such as Figure 1-4 As shown, it includes: due to the taper design of the cone wheel, when the chain plate body contacts the cone wheel, driven by the cone wheel, the upper end of the lower part of the chain plate body moves a distance one per unit time that is greater than the lower end of the lower part, so the link plate body swings, and the order of swinging is: the first arc surface A5 of the chain plate body swings forward first, and during the swinging process, the first arc surface A5 is tangent to the first arc surface B17 adjacent to the front side and slides relatively, thereby driving the plane structure 1 7 and the plane structure 2 18 adjacent to the front side to contact and transmit thrust, and also driving the distance between the second arc surface A9 and the second arc surface B19 to increase. , so that the second swing space 13 is expanded. Due to the limiting effect of the convex column and the groove, when it swings to the limit position, the second arc surface A9 begins to move toward the second arc surface B19, and is tangent to the second arc surface B and slides relatively, thereby driving the plane structure 1 7 and the plane structure 2 18 adjacent to the front side to change the contact position and continue to transmit the thrust. At the same time, it also drives the distance between the first arc surface A5 and the first arc surface B17 adjacent to the front side to increase, so that the first swing space 11 is enlarged. This cycle is repeated, and the same swing form is transmitted between each adjacent chain plate body, realizing the uniform transmission of the cone wheel thrust on the steel belt chain.

[0031] Example 4

[0032] Based on Example 3, Figure 2 As shown, this embodiment discloses that when the swing motion 1 between the first arc surface A5 and the first arc surface B17 and the swing motion 2 between the second arc surface A9 and the second arc surface B19 are switched, the plane structure 1 and the plane structure 2 are fitted to each other.

[0033] Working principle of the present invention:

[0034] The present invention discloses a CVT steel belt chain link plate and method, wherein the link plate bodies cooperate with each other through convex columns and grooves, the side surface of the lower part of the link plate body is provided with a friction tooth structure and an oil storage tank, and the upper and lower ends of the front and rear sides of the lower part are respectively arc surface structures, and the middle part is a plane structure, and the curvatures of the front and rear relative arc surface structures are not equal, and when the two cooperate, a swing space is formed. When the steel belt chain is running, the front and rear adjacent concave and convex arc surfaces cooperate with each other within a certain range to realize swinging motion, and the torque is transmitted through the friction tooth structure of the cone wheel pressing the chain plate body, and the thrust is transmitted through the swinging of the front and rear adjacent chain plate bodies, so that the steel belt chain can realize rotary motion in a fixed direction as the cone wheel rotates, thereby driving the entire chain to transmit stably, and thus the present invention has the characteristics of high transmission accuracy, precise swinging range, good steel belt flexibility, and uniform thrust transmission compared to traditional steel belt chains; in addition, the front and rear adjacent chain plate bodies of the present invention are meshed with each other through the concave and convex arc surfaces when swinging, forming a tangent structure between the arc surfaces, which can continuously realize the transmission of thrust, thereby improving the thrust transmission efficiency; the chain plate body of the present invention can be demolded from the same mold, which can greatly reduce the difficulty of processing and reduce the processing cost during the processing. The swinging method of the chain plate body in the prior art is as follows: Figure 5 As shown, during the swinging process, the thrust transmission is achieved only by relying on the swinging edge to change the contact position with the back of the chain plate body adjacent to the front. Obviously, the thrust transmission efficiency is low, and the impact force and noise between the chain plate bodies are large. In addition, the swinging process cannot achieve a smooth transition, and the steel belt chain cannot achieve uniform thrust transmission.

[0035] The chain plate body of the present invention begins to be stressed when it contacts the cone wheel, and the convex arc surface of the rear chain plate body and the concave arc surface of the front chain plate body form a tangent match to transmit thrust. The purpose of this design is to effectively improve the meshing effect between the chain plate bodies of the CVT steel belt chain, maximize the flexibility and swing accuracy of the steel belt chain, and make the thrust transmission uniform during the operation of the steel belt chain. Among them, the cooperation of the plane structure 1 and the plane structure 2 is a transition structure for the swing conversion of the upper and lower ends of the lower part of the chain plate body. During the swing process, the cooperation of the plane structure 1 and the plane structure 2 plays a certain buffering role. Combined with the limiting effect of the convex column and the groove, the swing motion 1 between the first arc surface A\B and the swing motion 2 between the second arc surface A\B can be evenly converted.

[0036] The lower side of the chain plate body of the present invention is crescent-shaped. Compared with the prior art, this design effectively increases the distribution of the friction tooth structure, increases the effective friction area, and increases the torque of the overall steel belt chain system. Figure 3 As shown, in order to make the chain plate body cooperate with the cone wheel, the taper of the lower part of the chain plate body is consistent with the taper of the cone wheel, thereby ensuring stability during transmission. It should be emphasized that the radius of the arc surface of the present invention is not unique and can be adjusted accordingly according to the required swing angle and the number and thickness of the sheets.

[0037] The present invention has a wide range of working conditions and can be used in harsh working conditions such as low speed and high torque. The steel belt chain meshes between the chain plates during service to perform swinging motion, with uniform transmission torque, high bearing capacity and low noise, thus achieving a significant effect of reducing noise.

Claims

1. A CVT steel belt chain plate, characterized by: It includes a chain plate body, which includes a top, a neck and a lower part. The upper end of the front surface of the lower part constitutes a first arcuate surface A, the lower end constitutes a second arcuate surface A, and a plane structure one is between the first arcuate surface A and the second arcuate surface A. The upper end of the rear surface of the lower part constitutes a first arcuate surface B, the lower end constitutes a second arcuate surface B, and a plane structure two is between the first arcuate surface B and the second arcuate surface B. Between the lower parts of adjacent chain plate bodies, a first swinging space is formed between the first arcuate surface A and the first arcuate surface B, and a second swinging space is formed between the second arcuate surface A and the second arcuate surface B. The plane structure one and the plane structure two are clearance-matched, the first arcuate surface A and the first arcuate surface B have different curvatures, and the second arcuate surface A and the second arcuate surface B have different curvatures.

2. A CVT steel belt chain link plate according to claim 1, characterized in that: The first arc surface A and the second arc surface A are outer convex surfaces, the first arc surface B and the second arc surface B are inner concave surfaces, and the top is a triangular structure, with a convex column at the front end of the top and a groove at the rear end of the top, and adjacent convex columns and grooves are gap-matched.

3. A CVT steel belt chain link plate as claimed in claim 2, characterized in that: The neck is a plate-like structure, and the neck is integrally connected between the lower end of the top and the upper end of the lower part.

4. A CVT steel belt chain link plate as claimed in claim 3, characterized in that: The side wall surfaces of the lower part are used to cooperate with the cone wheel of the CVT transmission system. The side wall surfaces are provided with a friction tooth structure, and the tooth grooves of the friction tooth structure form an oil storage tank.

5. A CVT steel belt chain link plate as claimed in claim 4, characterized in that: The chain plate body is subjected to high frequency quenching treatment, and the hardness range is 59-63HRC.

6. A method for swinging a CVT steel belt chain plate as claimed in claim 5, characterized in that: include: Due to the taper design of the cone wheel, when the chain plate body contacts the cone wheel, driven by the cone wheel, the upper end of the lower part of the chain plate body moves a distance 1 per unit time greater than the lower end of the lower part, so the link plate body swings. The order of swinging is: the first arc surface A of the chain plate body swings forward first. During the swinging process, the first arc surface A is tangent to the first arc surface B adjacent to the front side and slides relatively, thereby driving the plane structure 1 and the plane structure 2 adjacent to the front side to contact and transmit thrust, and also driving the distance between the second arc surface A and the second arc surface B to increase, so that The second swinging space is expanded. Due to the limiting effect of the convex column and the groove, when it swings to the extreme position, the second arc surface A starts to move toward the second arc surface B, and is tangent to the second arc surface B and slides relatively, thereby driving the plane structure 1 and the plane structure 2 adjacent to the front side to change the contact position and continuously transmit the thrust, and at the same time, it also drives the distance between the first arc surface A and the first arc surface B adjacent to the front side to increase, so that the first swinging space is increased, and this cycle is repeated, and the same swinging form is transmitted between each adjacent chain plate body, thereby realizing the uniform transmission of the thrust of the cone wheel on the steel belt chain.

7. A method for swinging a CVT steel belt chain plate as claimed in claim 6, characterized in that: When the swing motion 1 between the first arc surface A and the first arc surface B and the swing motion 2 between the second arc surface A and the second arc surface B are switched, the plane structure 1 and the plane structure 2 are fitted to each other.

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