Sliding clutch

Abstract

The utility model relates to a sliding clutch. The sliding clutch comprises a lifting plate, a pivot and a pressing plate which are sequentially arranged in the axial direction. The lifting plate and the pressing plate are fixed, the pressing plate is provided with a stand column penetrating through the pivot, a plurality of friction plates and steel plates are arranged between the pivot and the pressing plate at intervals, the stand column is sleeved with a spring, and the spring is connected between the lifting plate and the pressing plate in an abutting mode. A circumferential moving gap is formed between the pressing plate and the pivot, so that the pressing plate and the pivot can rotate relatively; a plurality of guide bosses are further arranged around the center of the pressing plate, guide grooves matched with the guide bosses are formed in the end face, opposite to the pressing plate, of the pivot in a one-to-one correspondence mode, and the matching faces of the guide grooves and the guide bosses are provided with spiral inclined faces which abut against each other and are attached to each other. The structure is more flexible and smooth in separation, rapid in separation and reunion and small in vibration.

Description

Technical Field

[0001] The utility model belongs to the technical field of clutches, and in particular relates to a sliding clutch. Background Art

[0002] The existing sliding clutch generally includes a lifting plate, a hub, and a pressure plate arranged in sequence along the axial direction. A friction plate group is arranged between the hub and the pressure plate. A spring is abutted between the lifting plate and the pressure plate. The hub is pressed against the spring to press the friction plate group. When the hub is pushed to slide under the action of hydraulic pressure, the friction plate of the friction plate group is separated from the steel plate to achieve clutch. In the above structure, an external spline is arranged on the outer peripheral wall of the hub to match the internal spline of the steel plate, and the external spline also forms a spline with the pressure plate for clutch guide. However, due to the large number of guides and the fact that the form of the spline can only slide axially, the resistance generated is large, the clutch separation speed is slow, vibration is easily generated, and the friction plate group is severely worn and the service life is short. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the above problems and provide a sliding clutch with more flexible separation, so as to solve the problems of slow clutch separation and vibration.

[0004] The technical solution of the utility model is:

[0005] A sliding clutch comprises a lifting plate, a hub and a pressure plate which are arranged in sequence along the axial direction, the lifting plate is fixed to the pressure plate, a column penetrating the hub is provided on the pressure plate and a plurality of friction plates and steel plates are provided between the hub and the pressure plate, a spring is also sleeved on the column and the spring abuts against the lifting plate and the pressure plate, and is characterized in that: a circumferential movable gap is provided between the pressure plate and the hub so that they are relatively rotatable; a plurality of guide bosses are also provided around the center on the pressure plate, and the hub is provided with guide grooves which are matched with the guide bosses on the end face opposite to the pressure plate in a one-to-one correspondence, wherein the matching surfaces of the guide grooves and the guide bosses have spiral inclined surfaces which abut against each other.

[0006] With the aid of the above structure, the utility model designs the central hub and the pressure plate into a circumferentially relatively rotatable structure, and adds guide protrusions and guide grooves with spiral slopes, which drive the central hub to rotate and ascend by climbing along the spiral slopes, so that the sliding clutch of the central hub no longer relies on the splines between the central hub and the pressure plate to achieve, with fewer guides and restrictions, more flexible sliding, greatly reduced separation resistance, and more thorough and rapid separation.

[0007] Furthermore, in the sliding clutch described in the utility model, a spline matching section and a smooth section are sequentially arranged on the outer peripheral wall of the hub in the axial direction, the radial cross-sectional dimension of the smooth section is smaller than the radial cross-sectional dimension of the spline matching section, the steel sheet is connected to the spline matching section by a spline, and a circumferential movable gap is formed between the smooth section and the pressure plate. By shortening the original spline part of the hub and changing it into a smooth section, since there is no circumferential restriction between the smooth section and the pressure plate, the rotational ascending clutch is realized through the spiral inclined surface, and the clutch is more flexible.

[0008] Furthermore, in the sliding clutch of the utility model, the number of the guide bosses is 4-6 and they are evenly distributed on the same circumference of the pressure plate. A small number of guide bosses can effectively reduce separation resistance, increase clutch speed, and avoid vibration.

[0009] Furthermore, in the sliding clutch described in the utility model, the inclination angle of the spiral slope is 30 degrees to 40 degrees.

[0010] Furthermore, in the sliding clutch described in the utility model, the guide boss and the pressure plate are integrally formed to facilitate processing.

[0011] Furthermore, in the sliding clutch described in the utility model, the hub has a radial flange for pressing the friction plate and the steel plate, and the radial flange is provided with a plurality of oil inlet holes, each of which is provided with an oil guide tube extending in the axial direction, and the oil guide tube is connected to the oil inlet hole by a thread; all the oil guide tubes are located in the central hole of the friction plate, and the steel plate is provided with a through hole for each oil guide tube to pass through; the outer wall of the oil guide tube is provided with a plurality of oil outlet holes, and the cross section of the oil outlet hole gradually decreases along the oil outlet direction. This structure forms a lubrication channel for conveying lubricating oil to the friction plate and the steel plate through the oil inlet hole, the oil guide tube, and the oil outlet hole. Since each oil guide tube is simultaneously provided on the steel plate and cooperates with the oil outlet hole designed based on the Venturi principle, the lubricating oil can more easily reach various parts of the surface of the steel plate, thereby improving the lubrication effect.

[0012] Furthermore, in the sliding clutch described in the utility model, a plurality of separation springs are sleeved on each oil guide pipe, and the separation springs are abutted between two adjacent steel sheets, and auxiliary separation is performed by the elastic force of the separation springs to increase the clutch speed.

[0013] Furthermore, in the sliding clutch described in the utility model, the oil inlet holes are located on the same circumference of the hub and are evenly distributed.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model shortens the splines on the outer peripheral wall of the hub and designs them into smooth sections, so that the hub and the pressure plate no longer rely on a large number of splines for sliding guidance during clutch, but use the spiral inclined surfaces of the guide protrusions and guide grooves for sliding guidance, which has a small range of rotational upward trend, can achieve rapid guided separation, small clutch resistance, fast speed, and more flexible sliding.

[0016] 2. The utility model increases the injection pressure by adding oil inlet holes, oil guide pipes, oil outlet holes and other structures, and designs the oil outlet holes as Venturi holes, making it easier for lubricating oil to enter between the friction plate and the steel plate, significantly improving the lubrication effect and greatly reducing the probability of burning the plate.

[0017] 3. The utility model assists in separating the friction plate group by adding a separation spring on the oil guide pipe, thereby increasing the separation force and the separation speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of Example 1.

[0019] Figure 2 This is a schematic diagram of the splitting of Example 1.

[0020] Figure 3 This is a schematic diagram of the structure of the hub described in Example 1.

[0021] Figure 4 It is a cross-sectional schematic diagram of Example 2.

[0022] Figure 5 for Figure 4 A partial enlarged view of . DETAILED DESCRIPTION

[0023] The utility model is now further described in conjunction with the accompanying drawings:

[0024] Reference Figure 1-Figure 2 As shown, this embodiment proposes a sliding clutch, including a lifting plate 1, a hub 2, and a pressure plate 3 arranged in sequence along the axial direction, the lifting plate 1 is fixed to the pressure plate 3, a column 4 penetrating the hub 2 is provided on the pressure plate 3, and a plurality of spaced friction plates 5 and steel plates 6 are provided between the hub 2 and the pressure plate 3, a spring 7 is also sleeved on the column 4 and the spring 7 abuts between the lifting plate 1 and the pressure plate 3.

[0025] A spline fitting section 201 and a smooth section 202 are sequentially arranged on the outer peripheral wall of the hub 2 along the axial direction. The radial cross-sectional dimension of the smooth section 202 is smaller than the radial cross-sectional dimension of the spline fitting section 201. The steel sheet 6 is connected to the spline fitting section 201 through a spline. A circumferential movable gap is formed between the smooth section 202 and the pressure plate 3 so that they can rotate relatively.

[0026] Four guide bosses 8 are integrally formed around the center of the pressing plate 3 and the guide bosses 8 are evenly distributed on the same circumference of the pressing plate 3. Figure 3 The hub 2 is provided with guide grooves 9 matched with the guide bosses 8 on the end face opposite to the pressure plate 3, wherein the matching surfaces of the guide grooves 9 and the guide bosses 8 have spiral inclined surfaces that abut against each other, and the inclination angle of the spiral inclined surfaces is 30 degrees to 40 degrees.

[0027] In this embodiment, when the spring 7 is in a compressed state, the spline matching section 201 of the hub 2 does not match with the pressure plate 3, but matches with the pressure plate 3 through the smooth section 202, and the two form a certain circumferential rotation space. The clutch guide is changed from the traditional axial movement that relies on a large number of splines and spline grooves to four guide bosses 8 and four guide grooves 9. The number is reduced, and the resistance is reduced accordingly, the speed of clutch separation is faster, and the vibration is reduced. At the same time, because the guide bosses 8 and guide grooves 9 slide with each other through the spiral bevel, when the clutch rotates, there is a certain circumferential rotation trend between the hub 2 and the pressure plate 3, so that the two can rotate and rise to clutch under the guidance of the spiral bevel, the sliding is more flexible, and the clutch is thorough and fast.

[0028] Example 2

[0029] Reference Figure 4 and Figure 5 , this embodiment is basically the same as the embodiment 1, except that: the hub 2 has a radial flange for pressing the friction plate 5 and the steel plate 6, and a plurality of oil inlet holes 10 are provided on the radial flange, and the oil inlet holes 10 are located on the same circumference of the hub 2 and are evenly distributed. Each oil inlet hole 10 is provided with an oil guide pipe 11 extending in the axial direction, and the oil guide pipe 11 is connected to the oil inlet hole 10 by a thread, which is convenient for disassembly and replacement. All oil guide pipes 11 are located in the central hole of the friction plate 5, and a through hole for each oil guide pipe 11 to pass through is provided on the steel plate 6. A plurality of oil outlet holes 12 are provided on the outer wall of the oil guide pipe 11, and the cross section of the oil outlet hole 12 gradually decreases along the oil outlet direction. A lubricating oil path is formed by the oil inlet hole 10, the oil guide pipe 11, and the oil outlet hole 12, and the oil outlet hole 12 is designed using the Venturi principle, so that the lubricating oil can be quickly introduced into the joint surface of the friction plate 5 and the steel plate 6, which is conducive to lubrication and heat dissipation and avoids dry friction damage. At the same time, in order to facilitate the rapid separation between the friction plate groups, a plurality of separation springs 13 are sleeved on each oil guide pipe 11. The separation springs 13 abut between two adjacent steel plates 6 to assist in separation.

[0030] The specific embodiments described herein are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A sliding clutch, comprising a lifting plate, a hub, and a pressure plate arranged in sequence along the axial direction, wherein the lifting plate is fixed to the pressure plate, a column penetrating the hub is provided on the pressure plate, and a plurality of friction plates and steel plates are provided between the hub and the pressure plate, a spring is also sleeved on the column and the spring abuts between the lifting plate and the pressure plate, and is characterized in that: There is a circumferential movable gap between the pressure plate and the hub, so they are relatively rotatable; a plurality of guide bosses are also provided on the pressure plate around the center, and the hub is provided with guide grooves matching the guide bosses on the end face opposite to the pressure plate, wherein the matching surfaces of the guide grooves and the guide bosses have spiral inclined surfaces that abut against each other.

2. The sliding clutch according to claim 1, characterized in that: A spline fitting section and a smooth section are sequentially arranged on the outer peripheral wall of the hub along the axial direction. The radial cross-sectional dimension of the smooth section is smaller than that of the spline fitting section. The steel sheet is connected to the spline fitting section via a spline, and a circumferential movable gap is formed between the smooth section and the pressure plate.

3. The sliding clutch according to claim 1, characterized in that: The number of the guide bosses is 4-6 and they are evenly distributed on the same circumference of the pressing plate.

4. The sliding clutch according to claim 1, characterized in that: The inclination angle of the spiral slope is 30 degrees to 40 degrees.

5. The sliding clutch according to claim 1, characterized in that: The guide boss and the pressing plate are integrally formed.

6. The sliding clutch according to claim 1, characterized in that: The hub is provided with a radial flange for pressing the friction plate and the steel plate, and the radial flange is provided with a plurality of oil inlet holes, each of which is provided with an oil guide pipe extending in the axial direction, and the oil guide pipe is connected to the oil inlet hole by a thread; all the oil guide pipes are located in the central hole of the friction plate, and a through hole is provided on the steel plate corresponding to each oil guide pipe for the oil guide pipe to pass through; the outer wall of the oil guide pipe is provided with a plurality of oil outlet holes, and the cross-section of the oil outlet hole gradually decreases along the oil outlet direction.

7. The sliding clutch according to claim 6, characterized in that: A plurality of separation springs are sleeved on each oil guide pipe, and the separation springs are abutted between two adjacent steel sheets.

8. The sliding clutch according to claim 6, characterized in that: The oil inlet holes are located on the same circumference of the hub and are evenly distributed.

Images