Hydraulic clutch and engine

Abstract

The hydraulic clutch comprises a clutch outer cover, a clutch center sleeve and a hydraulic driving mechanism, the hydraulic driving mechanism comprises a cylinder body center sleeve, a cylinder body and a piston disc, and the cylinder body center sleeve and the cylinder body are fixed and coaxially arranged. The piston disc is of a circular ring body structure, is sleeved with the cylinder body and is used for receiving hydraulic pressure in the cylinder body to form axial movement, meanwhile, the piston disc is slidably arranged on the cylinder body center sleeve in a sleeving mode, the cylinder body and the clutch outer cover are fixed in the axial direction, and the piston disc and the clutch center sleeve are in driving fit in the axial direction. The clutch is controlled to work through a hydraulic system, the structure of the clutch is redesigned to improve the overall assembling performance of the clutch, a piston disc of the clutch can be accurately controlled under corresponding working conditions, the reliability and maneuverability of the clutch are improved, and the service life of the hydraulic clutch is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of clutch, especially a kind of hydraulic clutch. BACKGROUND

[0002] Hydraulic clutch is the core component in vehicle transmission system, realizes power transmission and interruption between engine and transmission by hydraulic transmission principle, utilizes incompressible hydraulic oil to transmit driving force, and driving clutch separating bearing completes clutch action. It transmits operating force by hydraulic oil, replaces the pull line or lever structure of traditional mechanical clutch, so that operation is more stable and labor-saving. At the same time, compared with traditional clutch, the structure of hydraulic clutch is more complex, higher sealing and integrity are required between parts, and the clutch is only pressed by spring, so the torque carried by the clutch cannot be actively adjusted according to actual needs. Therefore, the existing clutch has poor assembly, insufficient sealing, which can affect the service life of hydraulic clutch, and reduce the reliability and maneuverability of hydraulic clutch.

[0003] Therefore, it is urgent to develop a hydraulic clutch, which controls the clutch work through hydraulic system, and redesigns the clutch structure to improve the assembly of hydraulic clutch and facilitate the accurate control of clutch piston disc in corresponding working condition, improve the reliability and maneuverability of hydraulic clutch. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a hydraulic clutch which can improve the overall assembly of clutch and facilitate clutch separation.

[0005] The utility model relates to a kind of hydraulic clutch, including clutch cover, clutch center sleeve and hydraulic drive mechanism, the hydraulic drive mechanism includes cylinder body center sleeve, cylinder body and piston disc, the cylinder body center sleeve is fixed with cylinder body and coaxially arranged, the piston disc is circular ring body structure and is in the cylinder body for receiving the hydraulic pressure of cylinder body and forms axial movement, simultaneously, the outer sleeve of slidable is in the cylinder body center sleeve, the cylinder body is fixed along the axial direction with clutch cover, the piston disc is driven cooperation in axial direction with clutch center sleeve.

[0006] Further, the piston disc is provided with a plurality of bolt holes for assembly with clutch center sleeve, the clutch center sleeve is provided with a plurality of assembly holes for installing bolt with the bolt hole, the top of the piston disc is further provided with anti-adhesion structure between the cylinder body to prevent the cylinder body and the piston disc from completely adhering.

[0007] Further, the anti-adhesion structure is a plurality of recesses or / and protrusions formed on the inner side of the top of the cylinder body or / and the top of the piston disc.

[0008] Further, a plurality of reset springs are further included, which generate a pre-tightening force between the piston disc and the cylinder body central sleeve, which is opposite to the hydraulic pressure received by the piston disc.

[0009] Further, the piston disc is provided with a plurality of counterbores corresponding to the reset springs and used for mounting the reset springs, and the cylinder body central sleeve is provided with a spring seat assembly used for abutting against the reset springs.

[0010] Further, the spring seat assembly is formed by an annular base plate sleeved on the cylinder body central sleeve, an annular groove is formed by bending on the annular base plate, an annular seat plate is arranged in the annular groove, and a spring seat pin sleeved on the end of the reset spring is fixed on the annular seat plate in a one-to-one correspondence.

[0011] Further, the cylinder body central sleeve is provided with a hydraulic oil through hole used for introducing or discharging the hydraulic oil between the top of the piston disc and the cylinder body, so as to form the hydraulic pressure for driving the piston disc or pressure relief.

[0012] Further, the tail of the piston disc forms a fixed fit with a piston shaft sleeve at least partially sleeved on the clutch central sleeve.

[0013] Further, a main shaft in transmission cooperation with the clutch central sleeve is further included, the main shaft is provided with a hydraulic oil channel and an annular oil groove in communication with the hydraulic oil channel, the cylinder body central sleeve is rotatably sleeved on the main shaft and the hydraulic oil through hole is located in the range of the annular oil groove, and a seal is formed between the cylinder body central sleeve and the main shaft on the axial direction of the annular oil groove; the main shaft is further provided with a lubricating oil channel and is in communication with a lubricating oil groove arranged on the end face of the cylinder body central sleeve.

[0014] An engine, which is provided with the hydraulic clutch as described in any one of the above.

[0015] The hydraulic clutch has the advantages that: the hydraulic system is used to control the clutch to work, the structure is redesigned to improve the overall assembly of the clutch, the piston disc of the clutch can be accurately controlled under corresponding working conditions, the reliability and maneuverability of the clutch are improved, and the service life of the hydraulic clutch is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0016] The hydraulic clutch will be further described below in combination with the drawings and embodiments:

[0017] Figure 1 The hydraulic clutch has the advantages that: the hydraulic system is used to control the clutch to work, the structure is redesigned to improve the overall assembly of the clutch, the piston disc of the clutch can be accurately controlled under corresponding working conditions, the reliability and maneuverability of the clutch are improved, and the service life of the hydraulic clutch is prolonged.

[0018] Figure 2 The hydraulic clutch has the advantages that: the hydraulic system is used to control the clutch to work, the structure is redesigned to improve the overall assembly of the clutch, the piston disc of the clutch can be accurately controlled under corresponding working conditions, the reliability and maneuverability of the clutch are improved, and the service life of the hydraulic clutch is prolonged.

[0019] Figure 3It is cylinder center sleeve structure schematic diagram;

[0020] Figure 4 It is support seat structure schematic diagram;

[0021] Figure 5 It is piston disc front structure schematic diagram;

[0022] Figure 6 It is piston disc back structure schematic diagram. DETAILED DESCRIPTION

[0023] Figure 1 It is structure schematic diagram of the utility model, Figure 2 It is clutch center sleeve structure schematic diagram, Fig. 3 is cylinder center sleeve structure schematic diagram, Figure 4 It is support seat structure schematic diagram, Figure 5 It is piston disc front structure schematic diagram, Figure 6 It is piston disc back structure schematic diagram. As shown in the figure: a hydraulic clutch of the embodiment, including clutch cover 1, clutch center sleeve 4 and hydraulic drive mechanism, the hydraulic drive mechanism includes cylinder center sleeve 7, cylinder 13 and piston disc 12, the cylinder center sleeve 7 is fixed with cylinder 13 and coaxial arrangement, the piston disc 12 is circular ring body structure and is sleeved in the cylinder 13 for receiving the hydraulic pressure in cylinder 13 and forms axial movement, simultaneously, the outer sleeve of the cylinder center sleeve 7 can be slid, the cylinder 13 is fixed along the axial direction with clutch cover 1, the piston disc 12 is driven in the axial direction with clutch center sleeve 4; As shown in the figure, the hydraulic clutch is driven by the interlaced arrangement of the driving friction plate 3 arranged in the clutch cover 1 and the driven friction plate 2 arranged in the clutch center sleeve 4, the cylinder center sleeve 7 is fixed with cylinder 13 and coaxial arrangement, the piston disc 12 is sleeved in the cylinder center sleeve 7 and can be moved along the axial direction by the hydraulic pressure in cylinder 13, and the piston disc 12 is driven in the axial direction with clutch center sleeve 4.

[0024] In the embodiment, the piston disc 12 is provided with a plurality of bolt holes 12B for assembly with the clutch center sleeve 4, the clutch center sleeve 4 is provided with a plurality of assembly holes 4A for mounting bolts corresponding to the bolt holes 12B, and the top of the piston disc 12 is further provided with an anti-adhesion structure between the piston disc 12 and the cylinder 13 to prevent the cylinder 13 from being completely attached to the piston disc 12; As shown in the figure, the piston disc 12 has a plurality of bolt holes 12B for assembly of the piston disc 12 and the clutch center sleeve 4, the bolt holes 12B correspond to the assembly holes 4A provided on the clutch center sleeve 4, and the assembly holes 4A are integrally assembled by bolts, and the assembly holes 4A can also be used for lubricating oil; when the hydraulic drive mechanism is working, to prevent the piston disc 12 from being adhered to the cylinder 13, an anti-adhesion structure is formed between the bottom of the cylinder 13 and the piston disc 12.

[0025] In the embodiment, the anti-adhesion structure is a plurality of recesses 12C or / and protrusions 12B formed on the inner side of the top of the cylinder body 13 or / and the top of the piston disc 12; as shown in the figure, the anti-adhesion structure is formed on the top of the piston disc 12, which includes a plurality of recesses 12C and protrusions 12B arranged radially on the piston disc 12. When the cylinder body 13 inputs hydraulic oil, the recesses 12C and protrusions 12B arranged on the piston disc 12 can reduce the adsorption force, facilitate the separation of the piston disc 12, facilitate the driving of the hydraulic drive mechanism, improve the maneuverability of the clutch, and at the same time, the anti-adhesion structure can also be arranged on the inner side of the top of the cylinder body 13, which will not be described here.

[0026] In the embodiment, a plurality of reset springs 11 are further included, which generate a pre-tightening force between the piston disc 12 and the cylinder body center sleeve 7, which is opposite to the hydraulic pressure acting on the piston disc 12; as shown in the figure, the reset spring 11 is located between the piston disc 12 and the cylinder body center sleeve 7, and forms a pre-tightening force for resetting the piston disc 12. The reset spring 11 is used to reset the piston disc 12 after the hydraulic pressure in the cylinder body 13 is reduced, effectively improving the maneuverability of the clutch.

[0027] In the embodiment, the piston disc 12 is provided with a counterbore 12A corresponding to the reset spring 11 and used for mounting the reset spring 11, and the cylinder body center sleeve 7 is provided with a spring seat assembly used for abutting against the reset spring 11; as shown in the figure, the piston disc 12 is further provided with a counterbore 12A corresponding to the reset spring 11 and used for fixedly mounting the reset spring 11, and at the same time, the cylinder body center sleeve 7 is provided with a spring seat assembly used for abutting against and supporting the reset spring 11.

[0028] In the embodiment, the spring seat assembly is formed by an annular base plate 9 sleeved on the cylinder body center sleeve 7, an annular groove is formed on the annular base plate 9, an annular seat plate 10 is arranged in the annular groove, and a spring seat pin 10A sleeved on the end of the reset spring 11 is fixedly arranged on the annular seat plate 10 corresponding to the reset spring 11; as shown in the figure, the spring assembly includes the annular base plate 9 sleeved on the cylinder body center sleeve 7 and the annular seat plate 10 arranged on the annular base plate 9. The annular base plate 9 is fixedly mounted on the cylinder body center sleeve 7 by the clasp 8. The annular base plate 9 is bent to form an annular groove. The annular seat plate 10 is arranged in the annular groove. The annular seat plate 10 is further provided with a spring seat pin 10A corresponding to the reset spring 11 and used for fixing the end of the reset spring 11. The annular seat plate 10 can slide relative to the annular base plate 9 to a certain extent, which is used to relieve the rotational misalignment between the piston disc 12 and the cylinder body center sleeve 7 during the operation of the clutch.

[0029] In the embodiment, the cylinder center sleeve 7 is provided with a hydraulic oil through hole 7A for introducing or discharging hydraulic oil between the top of the piston disc 12 and the cylinder, so as to form hydraulic pressure for driving the piston disc 12 or to release pressure; as shown in the figure, the cylinder center sleeve 7 is provided with a hydraulic oil through hole 7A for introducing or discharging hydraulic oil between the top of the piston disc 12 and the cylinder 13, so as to complete the driving work of the clutch.

[0030] In the embodiment, the tail of the piston disc 12 forms a fixed fit piston shaft sleeve at least partially sleeved on the clutch center sleeve 4; as shown in the figure, the tail of the piston disc 12 forms a piston shaft sleeve sleeved on the clutch center sleeve 4, the piston disc 12 and the clutch center sleeve 4 are in transmission through splines, and transmission connection between the piston disc 12 and the clutch center sleeve 4 is ensured during operation of the clutch.

[0031] In the embodiment, the main shaft 6 in transmission cooperation with the clutch center sleeve 4 is further included, the main shaft 6 is provided with a hydraulic oil passage 6A and an annular oil groove 6C in communication with the hydraulic oil passage 6A, the cylinder center sleeve 7 is rotatably sleeved on the main shaft 6 and the hydraulic oil through hole 7A is located in the range of the annular oil groove 6C, and a seal is formed between the cylinder center sleeve 7 and the main shaft 6 on both sides of the annular oil groove 6C in the axial direction; the main shaft 6 is further provided with a lubricating oil passage 6B in communication with the lubricating oil groove 7B provided on the end surface of the cylinder center sleeve 7; as shown in the figure, the main shaft 6 is provided with the hydraulic oil passage 6A and the lubricating oil passage 6B, and is further provided with the annular oil groove 6C in communication with the hydraulic oil passage 6A, the hydraulic oil through hole 7A of the cylinder center sleeve 7 is located in the range of the annular oil groove 6C and is in communication with the hydraulic oil passage 6A, a seal is formed between the cylinder center sleeve 7 and the main shaft 6 on both sides of the annular oil groove 6C in the axial direction through the sealing ring 5 and the sealing ring 15, and the end surface of one end of the cylinder center sleeve 7 is further provided with the lubricating oil groove 7B in communication with the lubricating oil passage 6B.

[0032] An engine, the engine is provided with the hydraulic clutch as described above; as shown in the figure, when the hydraulic clutch is in the disengaged state, the hydraulic oil pump does not generate pressure, at this time, the hydraulic oil passage 6A is not under pressure, the piston disc 12 is under the spring pressure of the reset spring 11, and the piston disc 12 is lowered, when the piston disc 12 contacts the end surface of the cylinder body 13, the piston disc 12 is no longer lowered, at this time, the driving friction plate 3 and the driven friction plate 2 are in the disengaged state, and there is no pressure between them, and the power is no longer transmitted. The piston disc 12 and the cylinder body 13 are provided with gaps through the recess 12C and the protrusion 12B, so that the hydraulic oil is ensured, and abnormal conditions such as air suction are avoided; when the hydraulic clutch is in the engaged state, the hydraulic oil pump generates pressure, at this time, the pressure of the hydraulic oil passage 6A increases, when the pressure is greater than the spring force of the reset spring 11, the piston disc 12 rises, and the driving friction plate 3 and the driven friction plate 2 are pressed, the engagement state can be accurately controlled by the oil pressure control system such as the electromagnetic valve, and the corresponding engagement working condition, which will not be described here.

[0033] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A hydraulic clutch, characterized in that: The clutch includes a clutch housing, a clutch center sleeve, and a hydraulic drive mechanism. The hydraulic drive mechanism includes a cylinder center sleeve, a cylinder, and a piston disc. The cylinder center sleeve is fixed to the cylinder and coaxially arranged. The piston disc has a circular structure and is fitted inside the cylinder to receive hydraulic pressure within the cylinder to form axial movement. Simultaneously, it is slidably fitted outside the cylinder center sleeve. The cylinder and the clutch housing are fixed axially, and the piston disc and the clutch center sleeve are driven together axially.

2. A hydraulic clutch according to claim 1, characterized in that: The piston disc is provided with a plurality of bolt holes for assembly with the clutch center sleeve. The clutch center sleeve is provided with a plurality of assembly holes corresponding to the bolt holes for mounting bolts. The top of the piston disc is also provided with an anti-adhesion structure that prevents the cylinder body from completely sticking to the piston disc.

3. The hydraulic clutch according to claim 2, characterized in that: The anti-adhesion structure consists of several recesses and / or protrusions formed on the inner side of the cylinder top and / or the top of the piston disc.

4. A hydraulic clutch according to claim 1, characterized in that: It also includes several return springs, which generate a preload force between the piston disc and the cylinder center sleeve, and the preload force is opposite to the hydraulic pressure on the piston disc.

5. The hydraulic clutch according to claim 4, characterized in that: The piston disc is provided with countersunk holes that correspond one-to-one with the return springs and are used to install the return springs. The cylinder center sleeve is provided with a spring seat assembly for abutting the return springs.

6. The hydraulic clutch according to claim 5, characterized in that: The spring seat assembly is formed by an annular base plate sleeved on the center sleeve of the cylinder body. An annular groove is formed by bending on the annular base plate. An annular seat plate is provided in the annular groove. A spring seat pin is fixedly provided on the annular seat plate, corresponding to the return spring and sleeved on the end of the return spring.

7. The hydraulic clutch according to claim 1, characterized in that: The cylinder body center sleeve is provided with a hydraulic oil through hole for introducing or exporting hydraulic oil between the top of the piston disc and the cylinder body, thereby forming hydraulic pressure to drive the piston disc or to release pressure.

8. The hydraulic clutch according to claim 1, characterized in that: The rear end of the piston disc forms a fixed fit with at least a portion of the piston shaft sleeve of the clutch center sleeve.

9. The hydraulic clutch according to claim 1, characterized in that: It also includes a main shaft that drives and cooperates with the clutch center sleeve. The main shaft has a hydraulic oil channel inside and an annular oil groove on its outer circumference that communicates with the hydraulic oil channel. The cylinder center sleeve rotates and fits onto the main shaft so that the hydraulic oil passage is located within the annular oil groove. A seal is formed between the cylinder center sleeve and the main shaft on both sides of the annular oil groove. The main shaft also has a lubricating oil channel that communicates with the lubricating oil groove on the end face of the cylinder center sleeve.

10. An engine, characterized in that: The engine is equipped with a hydraulic clutch as described in any one of claims 1-9.

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