A paving machine chain structure

Abstract

The utility model discloses a paving machine chain structure relates to chain technical field, including front chain plate, rear chain plate, the middle layer chain plate of rotation connection between front chain plate and rear chain plate and the inner layer chain plate of symmetrical distribution in the both sides of middle layer chain plate, and the rotation connection through the ball and ring groove between front chain plate, inner layer chain plate and between rear chain plate, inner layer chain plate. The paving machine chain structure, through the rolling fit design of introducing ball and ring groove, the face and face hard friction that the relative rotation of the outer chain plate and inner chain plate in the existing plate formula chain produces is changed for rolling friction, and the friction resistance is reduced significantly, and the chain plate wear and tear caused by hard friction is effectively reduced, thereby greatly prolongs the service life of chain.

Description

Technical Field

[0001] This utility model relates to the field of chain technology, specifically to a paver chain structure. Background Technology

[0002] Plate chains, due to their high strength, are widely used in the transmission structures of heavy machinery such as pavers. Existing plate chains consist of outer chain plates, inner chain plates, bushings, and pins. During the brick-carrying process, each link of the plate chain needs to rotate relative to the others. Specifically, the movement of each link involves the relative rotation between the outer and inner chain plates. In the existing structural design of plate chains, to ensure the overall strength of the chain, the adjacent end faces of the outer and inner chain plates are designed to be in contact. Therefore, when they rotate relative to each other, hard friction occurs between their adjacent end faces. This results in high frictional resistance and a significant reduction in the chain's lifespan. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a paver chain structure that solves the problems mentioned in the background section.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a paver chain structure, comprising a front chain plate, a rear chain plate, a middle chain plate rotatably connected between the front and rear chain plates, and inner chain plates symmetrically distributed on both sides of the middle chain plate. The front chain plate, the inner chain plate, and the rear chain plate are rotatably connected by balls and annular grooves. When the front chain plate, the rear chain plate, and the inner chain plate rotate relative to each other, the balls roll inside the annular grooves to reduce the friction between the adjacent end faces of the front chain plate, the inner chain plate, and the rear chain plate.

[0005] Furthermore, several reserved grooves are circumferentially opened on the end faces of the inner chain plate and the middle chain plate that are opposite to each other. A retainer is fixedly connected in each reserved groove. The balls are rolled inside the retainer. The side of the balls protrudes out of the retainer and extends into the annular groove. The annular groove is opened on the inner surface of the front chain plate and the rear chain plate.

[0006] Furthermore, the fan-shaped area between the cage and the ball is filled with lubricant, and the opening of the cage is provided with a contraction section. A small gap is reserved between the ball and the contraction section to prevent the ball from falling out of the cage, so that the ball can rotate synchronously with the lubricant when it rolls.

[0007] Furthermore, the thickness of the middle chain plate is greater than that of the inner chain plate, and weight reduction holes are reserved in the middle of both the middle and inner chain plates to reduce the weight of the chain.

[0008] Furthermore, the weight-reducing holes are round, oval, or waist-shaped to reduce the chain's weight while ensuring its strength.

[0009] Furthermore, pin holes are pre-drilled at both ends of the front chain plate, rear chain plate, middle chain plate, and inner chain plate. Bushings are inserted into the pin holes, and pins are inserted into the bushings. Both ends of the pins are integrally connected to protruding post structures with a diameter larger than the pin.

[0010] Furthermore, the circle, annular groove, pin hole, bushing, and pin shaft formed by the ball distribution trajectory all share the same center, so that the ball's trajectory always matches the shape of the annular groove when it rolls within it.

[0011] This utility model provides a paver chain structure. Compared with the prior art, it has the following advantages:

[0012] The paver chain structure, by introducing a rolling engagement design between balls and ring grooves, transforms the surface-to-surface hard friction generated when the outer and inner chain plates rotate relative to each other in existing plate chains into rolling friction. This significantly reduces frictional resistance, effectively reduces chain plate wear caused by hard friction, and thus greatly extends the chain's service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0014] Figure 2 A schematic diagram showing the disassembled structure of the connection between the ball bearings and the inner chain plate;

[0015] Figure 3 This is a schematic diagram of the assembly structure of the ball bearings and the inner chain plate.

[0016] Figure 4 A schematic diagram of the connection structure between the ball and the cage;

[0017] Figure 5 This is a schematic diagram of the front and rear chain plates and the ring groove.

[0018] Figure 6 This is a schematic diagram of the assembly structure of this utility model;

[0019] Figure 7 for Figure 6 Top view;

[0020] Figure 8 for Figure 7 Cross-sectional view of AA.

[0021] In the diagram: 1. Front chain plate; 2. Rear chain plate; 3. Middle chain plate; 4. Inner chain plate; 41. Reserved groove; 42. Cage; 43. Lubricant; 44. Shrinkage section; 45. Weight reduction hole; 5. Ball bearing; 6. Ring groove; 7. Pin hole; 8. Bushing; 9. Pin shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-8 This utility model provides a technical solution: a paver chain structure, comprising:

[0024] Front chain plate 1: Located at the front end of the chain;

[0025] Rear chain plate 2: Located at the rear end of the chain, it is arranged symmetrically with the front chain plate 1, together forming the basic framework of the chain;

[0026] Middle chain plate 3: Rotatably connected between the front chain plate 1 and the rear chain plate 2, located in the middle of the chain, and plays a supporting and reinforcing role;

[0027] Inner chain plate 4: symmetrically distributed on both sides of the middle chain plate 3, and rotatedly connected to the front chain plate 1 and the rear chain plate 2 through balls 5 and ring grooves 6.

[0028] Specifically, on the end faces of the inner chain plate 4 and the middle chain plate 3 that are opposite to each other, a number of reserved grooves 41 are opened in a circumferential direction. A retainer 42 is fixedly connected in each reserved groove 41. The opening of the retainer 42 faces the annular groove 6. The ball 5 is rolled inside the retainer 42. The side of the ball 5 protrudes out of the retainer 42 and extends into the annular groove 6. The annular groove 6 is opened on the inner side of the front chain plate 1 and the rear chain plate 2, and cooperates with the ball 5 to form a rolling pair.

[0029] Lubricant 43, which is graphite powder or grease, is filled in the fan-shaped area between the cage 42 and the ball 5. The opening of the cage 42 is provided with a shrinkage part 44. The opening size of the shrinkage part 44 is smaller than the diameter of the ball 5 to prevent the ball 5 from falling out of the cage 42. A small gap is reserved between the ball 5 and the shrinkage part 44 to allow the ball 5 to roll freely in the cage 42 and rotate synchronously with the lubricant 43 to achieve continuous lubrication of the chain.

[0030] The thickness of the middle chain plate 3 is greater than that of the inner chain plate 4 to improve the overall strength of the chain. Weight reduction holes 45 are reserved in the middle of both the middle chain plate 3 and the inner chain plate 4. The weight reduction holes 45 are round, oval or waist-shaped holes to reduce the weight of the chain and improve the chain's flexibility and service life.

[0031] Pin holes 7 are pre-drilled at both ends of the front chain plate 1, rear chain plate 2, middle chain plate 3, and inner chain plate 4. A bushing 8 is inserted into the pin hole 7. The bushing 8 protects the pin hole 7 and the pin 9 during rotation. The pin 9 is inserted into the bushing 8. The two ends of the pin 9 are flattened by a riveting machine to form a convex column structure with a diameter larger than the pin 9. There is a gap between the convex column structure and the end face of the pin hole 7 to allow the chain link to rotate on the pin 9 while maintaining the stability of the connection.

[0032] There are several balls 5, which are distributed circumferentially along the end face of the inner chain plate 4. The circle formed by the distribution trajectory of several balls 5, the annular groove 6, the pin hole 7, the bushing 8, and the pin 9 are all concentric. In this way, during the rolling process of the balls 5 inside the annular groove 6, their movement trajectory always remains the same as the shape of the annular groove 6, ensuring the smoothness and accuracy of the chain rotation.

[0033] During the operation of the paver, the chain rotates with the inherent gears. When the rotation angle changes, each link on the chain undergoes adaptive relative rotation. During this relative rotation, the front chain plate 1 and the rear chain plate 2 rotate relative to the inner chain plate 4. At this time, the front chain plate 1 and the rear chain plate 2 drive the ring groove 6 to rotate. The ring groove 6 contacts the ball 5, and the ball 5 rolls in the cage 42, transforming the hard friction between the front chain plate 1 and the inner chain plate 4, and between the rear chain plate 2 and the inner chain plate 4, into rolling friction. Rolling friction significantly reduces the friction force generated by relative rotation, thereby extending the service life of the chain.

Claims

1. A paver chain structure, characterized in that, It includes a front chain plate (1), a rear chain plate (2), a middle chain plate (3) rotatably connected between the front chain plate (1) and the rear chain plate (2), and inner chain plates (4) symmetrically distributed on both sides of the middle chain plate (3). The front chain plate (1), the inner chain plate (4) and the rear chain plate (2), the inner chain plate (4) are rotatably connected by balls (5) and annular grooves (6). When the front chain plate (1), the rear chain plate (2) and the inner chain plate (4) rotate relative to each other, the balls (5) roll inside the annular grooves (6) to reduce the friction between the adjacent end faces of the front chain plate (1), the inner chain plate (4) and the rear chain plate (2), the inner chain plate (4).

2. The paver chain structure according to claim 1, characterized in that, Several reserved slots (41) are opened circumferentially on the end face opposite to the middle chain plate (3). A retainer (42) is fixedly connected in each reserved slot (41). The ball (5) is rolled inside the retainer (42). The side of the ball (5) protrudes out of the retainer (42) and extends into the annular groove (6). The annular groove (6) is opened on the inner surface of the front chain plate (1) and the rear chain plate (2).

3. The paver chain structure according to claim 2, characterized in that, The fan-shaped area between the cage (42) and the ball (5) is filled with lubricant (43). The opening of the cage (42) is provided with a shrinkage part (44). A small gap is reserved between the ball (5) and the shrinkage part (44) to prevent the ball (5) from falling out of the cage (42), so that the ball (5) carries the lubricant (43) and rotates synchronously when it rolls.

4. The paver chain structure according to claim 1, characterized in that, The thickness of the middle chain plate (3) is greater than that of the inner chain plate (4), and weight reduction holes (45) are reserved in the middle of both the middle chain plate (3) and the inner chain plate (4) to reduce the weight of the chain.

5. The paver chain structure according to claim 1, characterized in that, The weight reduction hole (45) is round, oval or waist-shaped, in order to reduce the weight of the chain while ensuring the strength of the chain.

6. The paver chain structure according to claim 1, characterized in that, The front chain plate (1), rear chain plate (2), middle chain plate (3), and inner chain plate (4) all have pin holes (7) pre-drilled at both ends. A bushing (8) is inserted into the pin hole (7), and a pin (9) is inserted into the bushing (8). The two ends of the pin (9) are integrally connected to a convex column structure with a diameter larger than the pin (9).

7. A paver chain structure according to claim 6, characterized in that, The circle formed by the distribution trajectory of the ball (5), the annular groove (6), the pin hole (7), the bushing (8), and the pin (9) are all concentric, so that the movement trajectory of the ball (5) when rolling in the annular groove (6) is always the same as the shape of the annular groove (6).

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