CN105041911A - Anti-deformation dual disc of hydro-viscous speed regulating clutch - Google Patents

Abstract

The invention provides an anti-deformation dual disc of a hydro-viscous speed regulating clutch. The dual disc is a ring-shaped steel disc with the thickness being 2 to 5mm; and spline teeth are arranged on the inner ring or the outer ring of the ring-shaped steel disc. The anti-deformation dual disc is characterized in that the working surface of the dual disc is wavy, is uniformly provided with concentric ring-shaped grooves along the radial direction and is uniformly provided with radial rectangular grooves along the circumferential direction. The anti-deformation dual disc provided by the invention has the advantages that the radiating condition of friction pairs is improved, the film-forming capability and the kinetic-pressure bearing capability of viscous liquid medium among the friction pairs are enhanced, the thermal deformation of the dual disc of the hydro-viscous speed regulating clutch is reduced, the generation of non-thorough separation between a driving friction part and a driven friction part is prevented, the working performance of the hydro-viscous speed regulating clutch is improved and the service life of the hydro-viscous speed regulating clutch is prolonged.

Description

A pair plate of anti-deformation fluid-viscous speed-regulating clutch

technical field

The invention belongs to the field of friction components, in particular to a anti-deformation fluid viscous speed regulating clutch pair plate.

Background technique

The dual plate is a key part of the fluid viscous clutch. During the working process, there is a long-term relative sliding between the dual plate and the friction plate, which generates a lot of frictional heat. Since the dual plate is mostly in the form of a smooth surface, the heat dissipation conditions of the friction pair are not good. Well, a large amount of frictional heat can easily lead to thermal deformation of the dual plate, and the deformation of the dual plate will seriously affect the performance and service life of the fluid-viscous clutch, and even cause major safety accidents; moreover, the traditional dual plate is made of flat The planar thin disc structure easily leads to incomplete separation of the dual plate and the friction plate when the clutch is disengaged, and the existence of belt displacement torque increases the energy loss of the fluid-viscous speed-regulating clutch and reduces the efficiency of the fluid-viscous speed-regulating clutch .

Contents of the invention

In order to overcome the structural and functional deficiencies of the existing fluid-viscous speed-governing clutch coupler, the present invention provides a deformation-resistant fluid-viscous speed-governing clutch coupler, through the design of its structure, the friction of the fluid-viscous speed-governing clutch is improved The heat dissipation conditions of the pair can reduce the temperature rise effect of the pair plate of the liquid viscous speed regulating clutch during the working process, and reduce the degree of deformation; prevent the discharge phenomenon when the discharge is released, and improve the working performance and energy saving effect of the liquid viscous speed regulating clutch. prolong its working life.

The present invention achieves the above-mentioned technical purpose through the following technical means.

A anti-deformation anti-deformation fluid-viscous speed-regulating clutch dual plate, the clutch dual plate is an annular steel plate with a thickness of 2-5mm, and the inner ring or outer ring of the annular steel plate is provided with spline teeth, It is characterized in that the working surface of the clutch pair has a wavy structure, and the working surface of the clutch pair is uniformly distributed with concentric annular grooves along the radial direction, and radially rectangular grooves are evenly distributed along the circumferential direction. groove.

Preferably, the width B ₁ of the annular groove is 1-2mm, the depth H ₁ is 15%-20% of the thickness B of the annular steel sheet, and the radial direction between two adjacent annular grooves The distance δ is 3 to 4 times the width B ₁ of the annular groove, and the number of annular grooves n ₁ =L/(B ₁ +δ), wherein L is the radial width of the actual working surface of the dual sheet .

Preferably, the center line of the radial rectangular groove passes through the geometric center of the dual piece, the width B ₂ of the radial rectangular groove is 2-4 mm, the depth H ₂ of the radial rectangular groove is equal to the diameter of the annular groove The depth H ₁ is equal, the central angle β between the centerlines of two adjacent radial rectangular grooves is 15°-18°, and the number n ₂ of radial rectangular grooves is 360°/β.

Preferably, the outer diameter of the annular steel sheet is less than or equal to 200mm, and the amplitude of the wave-shaped structure is 0.25-0.4mm.

Preferably, the outer diameter of the annular steel sheet is greater than 200mm and less than 300mm, and the amplitude of the wave-shaped structure is 0.4-0.6mm.

Preferably, the outer diameter of the annular steel sheet is greater than 300mm, and the amplitude of the wave-shaped structure is 0.6-0.7mm.

Preferably, the material of the annular steel sheet is 45 ^# steel or 65Mn steel.

In the present invention, the working surface of the pair of clutch plates is designed into a wavy structure, so that the contact area of the friction pair increases with the increase of the oil pressure, the clutch works more smoothly, the impact and noise are small, the connection is soft, and it will not Banding occurs. Concentric annular grooves uniformly distributed in the radial direction on the working surface are conducive to the rapid establishment of the oil film between the friction pairs, improving the bearing capacity of the oil film between the friction pairs and the maximum torque that the friction pairs can transmit. Since the direction of the radial rectangular grooves evenly distributed along the circumferential direction is consistent with the direction of the centrifugal force on the oil film, it is beneficial for the oil film to quickly take away the heat and wear debris generated by friction.

To sum up, the advantages of the pair plate of the fluid viscous speed regulating clutch provided by the present invention are: the friction pair has good oil passing ability, and it is easy to form a uniform oil film, the average dynamic friction coefficient is moderate, and the friction pair has better heat dissipation and chip removal conditions, the torque can be transmitted smoothly, the temperature rise of the dual disc during the working process is greatly reduced, the possibility of thermal deformation and failure of the dual disc is reduced, and the clutch does not appear to be discharged when the clutch is disengaged, the working performance is improved, and the energy is saved. The effect is improved and the service life is longer.

Description of drawings

Fig. 1 is a structural diagram of the working surface of the pair plate of the fluid viscous speed regulating clutch according to the present invention.

Fig. 2 is a sectional view along A-A in Fig. 1 .

Fig. 3 is a partially enlarged view of the working surface of the pair plate of the fluid viscous speed regulating clutch.

The reference signs are explained as follows:

1-spline tooth, 2-wavy structure, 3-circular groove, 4-rectangular groove.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

As shown in Fig. 1, the anti-deformation fluid viscous clutch dual plate of the present invention is an annular steel plate with a thickness of 2-5mm, and the material of the annular steel plate is 45 ^# steel or 65Mn steel. Spline teeth 1 are arranged on the inner or outer ring of the annular steel sheet. The working surface of the dual plate of the clutch has a wave-shaped structure 2, so that the contact area of the friction pair increases with the increase of the oil pressure, the clutch works more smoothly, the impact and noise are small, the connection is soft, and there will be no belt discharge. Phenomenon.

The amplitude of the wave-shaped structure 2 is related to the outer diameter of the dual sheet. Specifically, when the outer diameter of the dual sheet is ≤ 200 mm, the amplitude of the wave-shaped structure 2 is 0.25 to 0.4 mm. When the outer diameter of the dual sheet is greater than When the diameter is 200 mm to less than 300 mm, the amplitude of the wave-shaped structure 2 is 0.4-0.6 mm, and when the outer diameter of the dual sheet is greater than 300 mm, the amplitude of the wave-shaped structure 2 is 0.6-0.7 mm.

On the basis of the wavy structure 2 on the working surface of the dual disc, concentric annular grooves 3 uniformly distributed in the radial direction are processed on the working surface of the dual disc of the clutch. The concentric annular grooves 3 uniformly distributed in the radial direction are conducive to the rapid establishment of the oil film between the friction pairs, and improve the bearing capacity of the oil film between the friction pairs and the maximum torque that the friction pairs can transmit.

The width B ₁ of the annular groove 3 = 1 to 2 mm, the depth H ₁ is 15% to 20% of the thickness B of the annular steel sheet, and the radial distance δ between two adjacent annular grooves It is 3 to 4 times the width B ₁ of the annular groove 3, and the number n ₁ of the annular groove 3 is determined by the condition that the grooves are uniformly distributed along the radial direction and the groove width B ₁ and the distance between two adjacent grooves The radial distance δ is jointly determined, that is, n ₁ =L/(B ₁ +δ), where L is the radial width of the actual working surface of the dual plate.

Radial rectangular grooves 4 uniformly distributed along the circumferential direction are processed on the working surface of the dual plate of the clutch, and the center line of the rectangular groove 4 passes through the geometric center of the dual plate. Since the groove direction of the radial rectangular groove 4 is consistent with the centrifugal force direction of the oil film, it is beneficial for the oil film to quickly take away the heat and wear debris generated by friction, improve the heat dissipation conditions of the friction pair, and reduce the fluid-viscous speed-regulating clutch Thermal deformation of the dual sheet.

The width B ₂ of the radial rectangular groove 4 = 2 to 4mm, the depth H ₂ of the radial rectangular groove 4 is equal to the depth H ₁ of the annular groove 3, and the center of two adjacent radial rectangular grooves 4 The central angle between the lines β=15°～18°, the number _n2 of the radial rectangular grooves 4 is determined by the condition that the grooves are evenly distributed along the circumferential direction and the central angle β between the centerlines of two adjacent grooves, That is, n ₂ =360°/β.

The described embodiment is a preferred implementation of the present invention, but the present invention is not limited to the above-mentioned implementation, without departing from the essence of the present invention, any obvious improvement, replacement or modification that those skilled in the art can make Modifications all belong to the protection scope of the present invention.

Claims (7)

1. a distortion-free hydro-viscous speed governing clutch antithesis sheet, the annular steel disc of described clutch antithesis sheet to be a thickness be 2 ~ 5mm, the interior ring of described annular steel disc or outer ring are provided with spline tooth (1), it is characterized in that, the working surface undulate structure (2) of described clutch antithesis sheet, the working surface of described clutch antithesis sheet is radially evenly equipped with concentric annular groove (3), is along the circumferential direction evenly equipped with radial rectangle groove (4).

2. clutch antithesis sheet according to claim 1, is characterized in that, the width B of described annular groove (3) ₁=1 ~ 2mm, depth H ₁for 15% ~ 20%, the radial distance δ between adjacent two annular grooves of described annular steel plate thickness B is annular groove (3) width B ₁3 ~ 4 times, the quantity n of annular groove (3) ₁=L/ (B ₁+ δ), wherein L is the radial width in described antithesis sheet real work face.

3. clutch antithesis sheet according to claim 2, is characterized in that, the center line of described radial rectangle groove (4) passes through the geometrical center of antithesis sheet, the width B of radial rectangle groove (4) ₂=2 ~ 4mm, the depth H 2 of radial rectangle groove (4) and the depth H of annular groove (3) ₁equal, central angle β=15 between adjacent radial rectangle groove (4) center line ° ~ 18 °, radial rectangle groove (4) quantity n ₂=360 °/β.

4. the clutch antithesis sheet according to any one of claim 1-3, is characterized in that, the external diameter of described annular steel disc is less than or equal to 200mm, and the amplitude of wavy shaped configuration (2) is 0.25 ~ 0.4mm.

5. the clutch antithesis sheet according to any one of claim 1-3, is characterized in that, the external diameter of described annular steel disc is greater than 200mm and is less than 300mm, and the amplitude of wavy shaped configuration (2) is 0.4 ~ 0.6mm.

6. the clutch antithesis sheet according to any one of claim 1-3, is characterized in that, the external diameter of described annular steel disc is greater than 300mm, and the amplitude of wavy shaped configuration (2) is 0.6 ~ 0.7mm.

7. the clutch antithesis sheet according to any one of claim 1-3, is characterized in that, the material of described annular steel disc is 45 ^#steel or 65Mn steel.