Novel clutch structure of walking tractor

Abstract

The novel clutch structure of the walking tractor is characterized in that a transmission shaft is sleeved with a pressing disc in a clearance fit mode, the pressing disc is arranged on the right side of a driven disc, the two sides of the driven disc are each connected with a first friction ring, the pressing disc and a cover plate are each connected with a second friction ring, and the second friction rings and the first friction rings are arranged correspondingly; an annular spring piece is arranged between the driven disc and the cover plate, the transmission shaft is sleeved with the annular spring piece, an annular spring piece is arranged between the driven disc and the pressing disc, and the transmission shaft is sleeved with the annular spring piece. According to the clutch, the driven disc is thoroughly separated from the cover plate and the pressing disc, relative friction is avoided, the service life of the clutch is prolonged, heat dissipation holes are formed in the cover plate and the driven disc, heat dissipation of the interior of the clutch is achieved, the situation that the clutch is overheated is avoided, the service life of the clutch is further prolonged, and the service life of the clutch is prolonged. And the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a novel clutch structure for a walking tractor. Background Art

[0002] The clutch of a hand tractor is a key component connecting the engine and the transmission system. It allows the driver to control the transmission and interruption of power. In the engaged state, the clutch transmits the power of the engine to the transmission system, driving the tractor forward or backward. In the disengaged state, the clutch can interrupt the power transmission between the engine and the transmission system, making it convenient for the driver to shift gears or prevent the engine from stalling when parking. Currently, most hand tractors use dry clutches because of their simple structure, easy maintenance and low cost. Most of them use a stacked driven plate and a friction plate to achieve the clutch function. However, in the disengaged state, since the friction plate is not fixed, it is inevitable that the friction plate and the driven plate will contact and rub while rotating, which reduces the service life of the clutch and is prone to "burning the clutch plate". In addition, most existing clutches are in a closed state, and due to the stacked design of the driven plate and the friction plate, heat cannot be dissipated, which also reduces the service life of the clutch. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a new clutch structure for a walking tractor in view of the deficiencies in the prior art, so as to solve at least one of the above technical problems.

[0004] The technical solution of the utility model for solving the above technical problems is as follows: A new clutch structure for a walking tractor, comprising a housing and a gearbox, wherein the gearbox is connected to a transmission shaft, an annular belt groove is provided on the side of the housing, a cover plate is connected to one side of the housing by bolts, a first bearing is provided in the middle of the housing, a second bearing is provided in the middle of the cover plate, the first bearing and the second bearing are provided correspondingly, the first bearing and the second bearing are connected to the transmission shaft in cooperation, a spline is provided on the left side of the transmission shaft, the transmission shaft is connected to a driven plate through the spline, the driven plate is provided inside the housing, a pressure plate is provided in a clearance-fitting sleeve on the transmission shaft and the pressure plate is provided on the driven plate On the right side, both sides of the driven plate are connected to the first friction ring, the pressure plate and the cover plate are connected to the second friction ring, and the second friction ring is arranged corresponding to the first friction ring, the right side wall of the shell is provided with a plurality of first spring grooves, and the right side of the pressure plate is provided with a plurality of second spring grooves, the first spring grooves and the second spring grooves are arranged correspondingly and connected by springs, an annular spring sheet is provided between the driven plate and the cover plate and the annular spring sheet is sleeved on the transmission shaft, an annular spring sheet is provided between the driven plate and the pressure plate and the annular spring sheet is sleeved on the transmission shaft, a plurality of connecting rods are connected to the right side of the pressure plate, and a connecting rod hole is provided on the right side wall of the shell, and the connecting rod passes through the connecting rod hole.

[0005] Furthermore, the end of the connecting rod is connected to an adjusting nut through a thread, and several support seats are provided on the outside of the right side wall of the shell. The support seat is connected to a separation lever through a pin shaft, and one end of the separation lever corresponds to the left side of the adjusting nut. A separation seat is provided on one side of the gear box, and a separation claw is provided on the transmission shaft clearance fit. The separation seat and the separation seat are both provided with annular inclined surfaces and fit each other. The separation claw is connected to a pull rod, and the side surface of the separation claw is provided corresponding to the other end of the separation lever.

[0006] Furthermore, a shift fork is provided at the end of the separation lever, the connecting rod cooperates with the shift fork, and the shift fork corresponds to the left side of the adjusting nut.

[0007] Furthermore, a plurality of first heat dissipation holes are provided on the cover plate.

[0008] Furthermore, a plurality of second heat dissipation holes are provided on the driven disk.

[0009] Furthermore, the first friction ring is provided with a countersunk hole, and the first friction ring is fixed to the outer circumference of the driven plate by a locking bolt.

[0010] Furthermore, the second friction ring is provided with a countersunk hole, and the second friction ring is fixedly connected to the pressure plate and the cover plate through locking bolts.

[0011] Furthermore, a threaded seat is provided on the cover plate, and the threaded seat is connected to a shaft cover via threads, and the shaft cover is provided corresponding to the end of the transmission shaft.

[0012] Furthermore, each of the annular spring sheets is provided with a smooth gasket, and the gasket is sleeved on the transmission shaft.

[0013] The beneficial effects of the utility model are:

[0014] The utility model is provided with an annular spring sheet, which can achieve complete separation between the driven plate, the cover plate and the pressure plate in the clutch disengagement state, thereby avoiding relative friction between them and improving the service life of the clutch. The device also provides heat dissipation holes on the cover plate and the driven plate to achieve heat dissipation inside the clutch, avoiding overheating of the clutch, further improving the service life of the clutch, and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the utility model.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0017] Housing 1; belt groove 2; cover plate 3; driven plate 4; first friction ring 5; pressure plate 6; second friction ring 7; first spring groove 8; second spring groove 9; spring 10; connecting rod hole 11; connecting rod 12; support seat 13; release lever 14; shift fork 15; adjusting nut 16; release seat 17; release claw 18; pull rod 19; first bearing 20; second bearing 21; transmission shaft 22; first heat dissipation hole 23; second heat dissipation hole 24; annular spring sheet 25; shaft cover 26; gear box 27; gasket 28. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined by the appended claims.

[0019] Example 1: See Figure 1: This is a schematic diagram of each structure of the present invention, including a housing 1, a gear box 27, the gear box 27 is connected to a transmission shaft 22, an annular belt groove 2 is provided on the side of the housing 1, a cover plate 3 is connected to one side of the housing 1 by bolts, a first bearing 20 is provided in the middle of the housing 1, a second bearing 21 is provided in the middle of the cover plate 3, the first bearing 20 and the second bearing 21 are arranged correspondingly, the first bearing 20 and the second bearing 21 are matched with the transmission shaft 22, a spline is provided on the left side of the transmission shaft 22, the transmission shaft 22 is connected to the driven plate 4 through the spline, the driven plate 4 and the transmission shaft 22 are connected by the spline, the driven plate 4 is arranged inside the housing 1, the transmission shaft 22 is clearance-fitted with a pressure plate 6, and the pressure plate 6 is arranged on the right side of the driven plate 4, both sides of the driven plate 4 are connected to a first friction ring 5, the pressure plate 6 and the cover plate 3 are connected to the second friction ring 7, and the second friction ring 7 is arranged corresponding to the first friction ring 5, through the first The contact between the friction ring 5 and the second friction ring 7 realizes the transmission of power. The right side wall of the housing 1 is provided with a plurality of first spring grooves 8, and the right side of the pressure plate 6 is provided with a plurality of second spring grooves 9. The first spring grooves 8 and the second spring grooves 9 are correspondingly arranged and connected by a spring 10. The setting of the spring 10 is used to realize the clamping of the pressure plate 6 on the driven plate 4. An annular spring sheet 25 is provided between the driven plate 4 and the cover plate 3, and the annular spring sheet 25 is sleeved on the transmission shaft 22. An annular spring sheet 25 is provided between the driven plate 4 and the pressure plate 6, and the annular spring sheet 25 is sleeved on the transmission shaft 22. The elastic force of the annular spring sheet 25 is much smaller than the elastic force of the spring 10. The driven plate 4 is completely separated by the elastic force of the annular spring sheet 25. A plurality of connecting rods 12 are connected to the right side of the pressure plate 6. The right side wall of the housing 1 is provided with a connecting rod hole 11. The connecting rod 12 passes through the connecting rod hole 11. The pressure plate 6 and the driven plate 4 are separated by pulling the connecting rod 12 to the right.

[0020] Specifically, the end of the connecting rod 12 is connected to the adjusting nut 16 through a threaded connection, and a number of support seats 13 are provided on the outside of the right side wall of the shell 1. The support seat 13 is connected to the separation lever 14 through a pin shaft, and one end of the separation lever 14 corresponds to the left side of the adjusting nut 16. A separation seat 17 is provided on one side of the gear box 27, and a separation claw 18 is provided with a clearance fit on the transmission shaft 22. The separation seat 17 and the separation seat 17 are both provided with annular inclined surfaces and fit each other. When the separation claw 18 is rotated, the setting of the inclined surface can enable the separation claw 18 and the separation seat 17 to achieve relative displacement. The separation claw 18 is connected to a pull rod 19, and the rotation of the separation claw 18 is achieved by pulling the pull rod 19. The side of the separation claw 18 is set corresponding to the other end of the separation lever 14.

[0021] Specifically, a shift fork 15 is provided at the end of the separation lever 14 , and the connecting rod 12 cooperates with the shift fork 15 , and the shift fork 15 corresponds to the left side of the adjustment nut 16 , and the connection rod 12 is moved to the right through the separation lever 14 .

[0022] Specifically, a plurality of first heat dissipation holes 23 are provided on the cover plate 3 , and a plurality of second heat dissipation holes 24 are provided on the driven disk 4 , so that the heat inside the housing 1 can be transferred out.

[0023] Specifically, the first friction ring 5 is provided with a countersunk hole, and the first friction ring 5 is fixed to the outer circumference of the driven plate 4 by means of locking bolts.

[0024] Specifically, the second friction ring 7 is provided with a countersunk hole, and the second friction ring 7 is fixedly connected to the pressure plate 6 and the cover plate 3 by means of locking bolts.

[0025] Specifically, a threaded seat is provided on the cover plate 3 , and a shaft cover 26 is connected to the threaded seat via threads. The shaft cover 26 is provided corresponding to the end of the transmission shaft 22 to protect the transmission shaft 22 .

[0026] Specifically, each annular spring sheet 25 is provided with a smooth gasket 28 , which is sleeved on the transmission shaft 22 to reduce friction, increase service life, and reduce the cost of replacing the gasket 28 .

[0027] When using the present utility model, the belt groove 2 is provided with a belt and is connected to the engine transmission. When the device is required to realize power separation, the separation claw 18 is separated from the separation seat 17 by pulling the pull rod 19, and the separation lever 14 is pushed to the left. One end of the separation lever 14 is pushed to the left, and the pressure plate 6 is displaced to the right, thereby realizing the separation of the pressure plate 6 and the driven plate 4. The annular spring sheet 25 provided on both sides of the driven plate 4 pushes the driven plate 4 so that the driven plate 4 is located in the middle of the cover plate 3 and the pressure plate 6 and does not contact the cover plate 3 and the pressure plate 6, thereby completing the power separation of the clutch. When the device is required to realize power combination, the pull rod 19 is released, and the pressure plate 6 is pushed to the left under the action of the spring 10 to clamp the driven plate 4, thereby realizing power combination.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new clutch structure for a walking tractor, comprising a housing (1) and a gearbox (27), wherein the gearbox (27) is connected to a transmission shaft (22), a side of the housing (1) is provided with an annular belt groove (2), one side of the housing (1) is connected to a cover plate (3) by bolts, a first bearing (20) is provided in the middle of the housing (1), a second bearing (21) is provided in the middle of the cover plate (3), the first bearing (20) and the second bearing (21) are provided correspondingly, and the first bearing (20) and the second bearing (21) are cooperatively connected to the transmission shaft (22), characterized in that: The left side of the transmission shaft (22) is provided with a spline, and the transmission shaft (22) is connected to a driven disc (4) through the spline, and the driven disc (4) is arranged inside the housing (1), and the transmission shaft (22) is provided with a pressure plate (6) in a clearance fit, and the pressure plate (6) is arranged on the right side of the driven disc (4), and both sides of the driven disc (4) are connected to a first friction ring (5), and the pressure plate (6) and the cover plate (3) are connected to a second friction ring (7), and the second friction ring (7) is arranged corresponding to the first friction ring (5), and the right side wall of the housing (1) is provided with a plurality of first spring grooves (8), and the right side of the pressure plate (6) is provided with A plurality of second spring slots (9), the first spring slots (8) and the second spring slots (9) are correspondingly arranged and connected via a spring (10), an annular spring sheet (25) is arranged between the driven disc (4) and the cover plate (3), and the annular spring sheet (25) is sleeved on the transmission shaft (22), an annular spring sheet (25) is arranged between the driven disc (4) and the pressure plate (6), and the annular spring sheet (25) is sleeved on the transmission shaft (22), a plurality of connecting rods (12) are connected to the right side of the pressure plate (6), and a connecting rod hole (11) is provided on the right side wall of the housing (1), and the connecting rod (12) passes through the connecting rod hole (11).

2. A new clutch structure for a walking tractor according to claim 1, characterized in that: The end of the connecting rod (12) is connected to the adjusting nut (16) through a thread, and a plurality of support seats (13) are provided on the outside of the right side wall of the shell (1), and the support seat (13) is connected to the separation lever (14) through a pin shaft, and one end of the separation lever (14) corresponds to the left side of the adjusting nut (16). A separation seat (17) is provided on one side of the gear box (27), and a separation claw (18) is provided on the transmission shaft (22) in a clearance fit. The separation seat (17) and the separation seat (17) are both provided with annular inclined surfaces and fit each other, and the separation claw (18) is connected to a pull rod (19), and the side surface of the separation claw (18) is provided corresponding to the other end of the separation lever (14).

3. A new clutch structure for a walking tractor according to claim 2, characterized in that: A shift fork (15) is provided at the end of the separation lever (14), the connecting rod (12) cooperates with the shift fork (15), and the shift fork (15) corresponds to the left side of the adjustment nut (16).

4. The novel clutch structure for a walking tractor according to claim 1, characterized in that: A plurality of first heat dissipation holes (23) are provided on the cover plate (3).

5. The novel clutch structure for a walking tractor according to claim 1, characterized in that: A plurality of second heat dissipation holes (24) are provided on the driven disk (4).

6. The novel clutch structure for a walking tractor according to claim 1, characterized in that: The first friction ring (5) is provided with a countersunk hole, and the first friction ring (5) is fixed to the outer circumference of the driven disc (4) by means of a locking bolt.

7. The novel clutch structure for a walking tractor according to claim 1, characterized in that: The second friction ring (7) is provided with a countersunk hole, and the second friction ring (7) is fixedly connected to the pressure plate (6) and the cover plate (3) via locking bolts.

8. The novel clutch structure for a walking tractor according to claim 1, characterized in that: A threaded seat is provided on the cover plate (3), and the threaded seat is connected to a shaft cover (26) via a thread, and the shaft cover (26) is provided corresponding to the end of the transmission shaft (22).

9. The novel clutch structure for a walking tractor according to claim 1, characterized in that: The annular spring sheets (25) are each provided with a smooth gasket (28), and the gasket (28) is sleeved on the transmission shaft (22).

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