Friction element rapid separation device and test system thereof

Abstract

The invention belongs to the technical field of clutches, and particularly relates to a friction element rapid separation device and a test system thereof, when a clutch mechanism is engaged, under the action of compression force, a second block body is contracted into a first accommodating cavity, a third block body is contracted into a second accommodating cavity, at the moment, friction elements are in friction contact, and thus the effect of transmitting power is achieved; when the clutch mechanism is disengaged, the spring extends and firstly drives the third block body to extend out of the second containing cavity, and when the third block body extends to the limiting position, the third block body drives the second block body to extend out of the first containing cavity, so that the friction elements are completely separated. The problems that after an existing wet-type friction clutch is disengaged, the towing torque is large, the no-load transmission efficiency is low, lubricating oil is prone to heating, and the burden of a lubricating and cooling device is increased are solved, and the rub-impact phenomenon between friction elements is effectively avoided. Meanwhile, the invention provides a test system which is used for testing the effect of the friction element rapid separation device.

Description

Technical Field

[0001] The invention belongs to the technical field of clutches, and in particular relates to a friction element quick-release device and a test system thereof. Background Art

[0002] The clutch, as the name implies, uses "disconnection" and "connection" to transmit the right amount of power. There are many types of clutches, such as electromagnetic clutches, magnetic powder clutches or friction clutches.

[0003] When the existing wet friction clutch is in use, the drag torque is large after the clutch is disengaged, which not only reduces the no-load transmission efficiency of the clutch, but also easily causes the lubricating oil discharged from the clutch to heat up, increasing the burden on the clutch lubrication and cooling device. At the same time, the friction elements are completely separated by the flow of lubricating oil and fail to achieve axial positioning. As a result, although the clutch is in a disengaged state, random and mutually influential friction will occur between the friction elements, which is externally manifested as an intermittent increase in the drag torque, further increasing the power loss after the clutch is disengaged. Summary of the invention

[0004] The object of the present invention is to provide a friction element quick release device and a test system thereof to solve the above problems.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A friction element quick release device, comprising:

[0007] A first block having a first accommodating cavity at one end, wherein the first accommodating cavity is coaxially arranged with the first block;

[0008] A second block is slidably connected in the first accommodating cavity. The second block is provided with a second accommodating cavity. The second accommodating cavity is coaxially arranged with the second block, and the second block does not fall out of the first accommodating cavity.

[0009] A third block is slidably connected in the second accommodating cavity. A third accommodating cavity is opened at one end of the third block. The third accommodating cavity is coaxially arranged with the third block. The opening of the third accommodating cavity faces the first accommodating cavity. The third block does not fall out of the second accommodating cavity.

[0010] A spring is inserted into the second accommodating cavity, and two ends of the spring are respectively in contact with the bottom of the first accommodating cavity and the bottom of the third accommodating cavity.

[0011] In a friction element quick release device of the present invention, a mounting hole is opened at one end of the first block, the opening of the mounting hole is arranged on the same side as the opening of the first accommodating cavity, and the mounting hole is close to the outer edge of the first block.

[0012] A test system for testing the effect of the friction element quick release device, comprising:

[0013] A box body, on two opposite side walls of the box body, an input shaft and an output shaft are rotatably connected respectively, and the input shaft and the output shaft are coaxially arranged;

[0014] A clutch mechanism, arranged between the input shaft and the output shaft, the clutch mechanism is connected to the input shaft and the output shaft, and a plurality of friction element quick-release devices are arranged on the clutch mechanism;

[0015] The driving mechanism is arranged on one side of the box body and is drivingly connected to the input shaft.

[0016] In the test system of the present invention, the clutch mechanism comprises:

[0017] A cylinder sleeve is coaxially arranged with the output shaft, the cylinder sleeve and the output shaft are connected by a spline, a placement cavity is provided on a side of the cylinder sleeve close to the input shaft, a plurality of tooth grooves are circumferentially provided on a side wall of the placement cavity, and the axis of the tooth groove is arranged parallel to the axis of the cylinder sleeve;

[0018] A plurality of toothed steel sheets are coaxially arranged in the placement cavity, the limiting teeth at the outer edges of the toothed steel sheets are slidably connected in the tooth grooves on the cylinder sleeve, the friction element quick-detaching device is arranged between two adjacent toothed steel sheets, the friction element quick-detaching device is arranged on the limiting teeth, and the plurality of friction element quick-detaching devices located on the same toothed steel sheet are arranged at equal intervals in the circumferential direction;

[0019] A plurality of friction plates are coaxially arranged in the placement cavity, and the plurality of friction plates and the plurality of toothed steel plates are spaced apart from each other;

[0020] A transmission gear sleeve, one end of which is connected to the inner edge of the friction plate through a spline, the other end of which is coaxially fixed to the input shaft, and the toothed steel plate is loosely sleeved on the outer side of the transmission gear sleeve;

[0021] A sleeve, coaxially fixed to the outside of the input shaft, one end of the sleeve extends into the placement cavity and abuts against the toothed steel sheet;

[0022] The power end of the hydraulic sleeve is coaxially fixed to the output shaft, and the output end of the hydraulic sleeve abuts against the cylinder sleeve.

[0023] In the test system of the present invention, a limiting groove is circumferentially opened on the inner side wall of the placement cavity, a ring is circumferentially arranged in the limiting groove, the inner edge of the ring is slidably connected to the outer side wall of the sleeve, and the ring does not fall out of the sleeve.

[0024] In a test system of the present invention, a second bracket is fixedly connected to the lower part of the box body, an oil collecting hopper is arranged on the second bracket, and the oil collecting hopper is located directly below the clutch mechanism.

[0025] In the test system of the present invention, the outer coaxial sleeve of the input shaft is provided with an input transparent cover, the outer coaxial sleeve of the output shaft is provided with an output transparent cover, and the input transparent cover and the output transparent cover are both fixedly connected to the outer wall of the box body.

[0026] In the test system of the present invention, the driving mechanism comprises a first bracket, a driving motor is fixedly mounted on the first bracket, and an output shaft of the driving motor is connected to the input shaft via a coupling.

[0027] Compared with the prior art, the present invention has the following advantages and technical effects:

[0028] The present invention proposes a friction element quick separation device. When the clutch mechanism is engaged, under the action of the compression force, the second block shrinks into the first accommodating chamber, and the third block shrinks into the second accommodating chamber. At this time, the friction elements are in friction contact with each other, thereby transmitting power; when the clutch mechanism is disengaged, the spring stretches, first driving the third block to extend out of the second accommodating chamber, and when the third block reaches the extreme position of extension, the third block drives the second block to extend out of the first accommodating chamber, thereby completely separating the friction elements, overcoming the problems of the existing wet friction clutch having large drag torque after disengagement, low no-load transmission efficiency, easy heating of the lubricating oil, and increased burden on the lubrication and cooling device, and effectively avoiding rubbing between the friction elements; at the same time, a test system is proposed for testing the effect of the friction element quick separation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0030] Figure 1 It is a schematic diagram of the structure of the friction element quick separation device in the present invention;

[0031] Figure 2 It is a front view of the test system in the present invention;

[0032] Figure 3 It is a structural schematic diagram of the test system in the present invention;

[0033] Figure 4 for Figure 3A partial enlarged view of the middle A;

[0034] Figure 5 It is a schematic diagram of the assembly of the quick separation device of the toothed steel sheet and the friction element in the present invention;

[0035] Figure 6 It is a structural schematic diagram of the cylinder sleeve in the present invention;

[0036] Among them, 1. first bracket; 2. driving motor; 3. coupling; 4. input shaft; 5. input cover; 6. housing; 7. output shaft; 8. output cover; 9. sleeve; 10. hydraulic sleeve; 11. cylinder sleeve; 12. second bracket; 13. oil collecting hopper; 14. transmission gear sleeve; 15. toothed steel sheet; 16. friction plate; 18. collar; 1701. first block; 1702. second block; 1703. third block; 1704. first accommodating chamber; 1705. second accommodating chamber; 1706. third accommodating chamber; 1707. spring; 1708. mounting hole. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figures 1 to 6 The present invention discloses a friction element quick separation device, comprising:

[0040] The first block 1701 has a first accommodating cavity 1704 at one end, and the first accommodating cavity 1704 is coaxially arranged with the first block 1701;

[0041] The second block 1702 is slidably connected in the first accommodating cavity 1704. The second block 1702 is provided with a second accommodating cavity 1705. The second accommodating cavity 1705 is coaxially arranged with the second block 1702. The second block 1702 does not fall out of the first accommodating cavity 1704.

[0042] The third block 1703 is slidably connected in the second accommodating cavity 1705. A third accommodating cavity 1706 is provided at one end of the third block 1703. The third accommodating cavity 1706 is coaxially arranged with the third block 1703. The opening of the third accommodating cavity 1706 faces the first accommodating cavity 1704. The third block 1703 does not fall out of the second accommodating cavity 1705.

[0043] The spring 1707 is inserted into the second accommodating cavity 1705 , and two ends of the spring 1707 abut against the bottom of the first accommodating cavity 1704 and the bottom of the third accommodating cavity 1706 , respectively.

[0044] The present invention proposes a friction element quick separation device. When the clutch mechanism is engaged, under the action of the compression force, the second block 1702 shrinks into the first accommodating chamber 1704, and the third block 1703 shrinks into the second accommodating chamber 1705. At this time, the friction elements are in friction contact with each other, thereby transmitting power; when the clutch mechanism is disengaged, the spring 1707 is extended, and first drives the third block 1703 to extend out of the second accommodating chamber 1705. When the third block 1703 is extended to the extreme position, the third block 1703 drives the second block 1702 to extend out of the first accommodating chamber 1704, thereby completely separating the friction elements, overcoming the problems of the existing wet friction clutch having a large drag torque after disengagement, low no-load transmission efficiency, easy heating of the lubricating oil, and increased burden on the lubrication and cooling device, and effectively avoiding friction between the friction elements; at the same time, a test system is proposed for testing the effect of the friction element quick separation device.

[0045] In a feasible solution, a mounting hole 1708 is opened at one end of the first block 1701 , and the opening of the mounting hole 1708 is arranged on the same side as the opening of the first accommodating cavity 1704 , and the mounting hole 1708 is close to the outer edge of the first block 1701 .

[0046] The mounting hole 1708 is used to mount a thermocouple, and the temperature of the friction element is monitored in real time through the thermocouple.

[0047] A test system for testing the effect of a friction element quick release device, comprising:

[0048] The box body 6 has two opposite side walls on which the input shaft 4 and the output shaft 7 are rotatably connected, and the input shaft 4 and the output shaft 7 are coaxially arranged;

[0049] The clutch mechanism is arranged between the input shaft 4 and the output shaft 7. The clutch mechanism is connected to the input shaft 4 and the output shaft 7. The clutch mechanism is provided with a plurality of friction element quick-release devices.

[0050] The driving mechanism is arranged on one side of the box body 6 and is drivingly connected to the input shaft 4 .

[0051] In a feasible solution, the clutch mechanism includes:

[0052] The cylinder sleeve 11 is coaxially arranged with the output shaft 7. The cylinder sleeve 11 and the output shaft 7 are connected by a spline. A placement cavity is provided on the side of the cylinder sleeve 11 close to the input shaft 4. A plurality of tooth grooves are provided on the side wall of the placement cavity in a circumferential direction. The axis of the tooth groove is parallel to the axis of the cylinder sleeve 11.

[0053] A plurality of toothed steel sheets 15 are coaxially arranged in the placement cavity, the limiting teeth at the outer edges of the toothed steel sheets 15 are slidably connected in the tooth grooves on the cylinder sleeve 11, the friction element quick-release device is arranged between two adjacent toothed steel sheets 15, the friction element quick-release device is arranged on the limiting teeth, and the plurality of friction element quick-release devices on the same toothed steel sheet 15 are arranged at equal intervals in the circumferential direction;

[0054] A plurality of friction plates 16 are coaxially arranged in the placement cavity, and the plurality of friction plates 16 are spaced apart from the plurality of toothed steel plates 15;

[0055] The transmission gear sleeve 14 has one end connected to the inner edge of the friction plate 16 through a spline, and the other end of the transmission gear sleeve 14 is coaxially fixed to the input shaft 4, and the toothed steel plate 15 is loosely sleeved on the outer side of the transmission gear sleeve 14;

[0056] The sleeve 9 is coaxially fixed to the outside of the input shaft 4, and one end of the sleeve 9 extends into the placement cavity and abuts against the toothed steel sheet 15;

[0057] The power end of the hydraulic sleeve 10 is coaxially fixed to the output shaft 7 , and the output end of the hydraulic sleeve 10 abuts against the cylinder sleeve 11 .

[0058] In a feasible solution, a limiting groove is circumferentially opened on the inner wall of the placement cavity, and a ring 18 is circumferentially arranged in the limiting groove. The inner edge of the ring 18 is slidably connected to the outer wall of the sleeve 9, and the ring 18 does not fall out of the sleeve 9.

[0059] This arrangement prevents the sleeve 9 and the cylinder sleeve 11 from being disengaged.

[0060] In a feasible solution, a second bracket 12 is fixedly connected to the lower part of the box body 6, and an oil collecting hopper 13 is arranged on the second bracket 12. The oil collecting hopper 13 is located directly below the clutch mechanism.

[0061] In a feasible solution, an input cover 5 is coaxially sleeved on the outer side of the input shaft 4 , and an output cover 8 is coaxially sleeved on the outer side of the output shaft 7 . Both the input cover 5 and the output cover 8 are fixedly connected to the outer wall of the box body 6 .

[0062] In a feasible solution, the driving mechanism includes a first bracket 1 , on which a driving motor 2 is fixedly mounted, and an output shaft of the driving motor 2 is connected to an input shaft 4 via a coupling 3 .

[0063] One specific example:

[0064] The thickness of the friction plate 16 is 3.2mm, the size of the first block 1701 is φ8X3.2mm, the size of the second block 1702 is φ6X2.5mm, the size of the third block 1703 is φ3X2.5mm, the limit elongation dimension of the friction element quick-release device is greater than or equal to 4mm, the normal size of the spring 1707 is 8mm, a welding hole of φ8X0.2mm is provided on the limiting teeth of the toothed steel plate 15, the first block 1701 is welded in the welding hole, the angle between two adjacent welding holes is 60°, the elongation directions of the friction element quick-release devices on different toothed steel plates 15 are consistent, two toothed steel plates 15 and friction plates 16 are each provided and spaced apart, the friction plate 16 at one end is provided correspondingly to the bottom of the placement cavity, and the toothed steel plate 15 at one end is provided correspondingly to the sleeve 9;

[0065] During the test, the input shaft 4 is driven to rotate by the driving motor 2, and the cylinder sleeve 11 is pressed by the hydraulic sleeve 10, so that the cylinder sleeve 11 moves toward the input shaft 4. At this time, the distance between the bottom of the placement chamber and the end of the sleeve 9 is gradually reduced until the friction plate 16 is in friction contact with the toothed steel plate 15 and the bottom of the placement chamber. The friction plate 16 drives the toothed steel plate 15 to rotate through friction, and the toothed steel plate 15 drives the cylinder sleeve 11 to rotate, thereby driving the output shaft 7 to rotate.

[0066] During separation, the output end of the oil pressure sleeve 10 contracts. At this time, the first block 1701 extends out from the second accommodating chamber 1705 under the action of the spring 1707. When the third block 1703 reaches the limit of extension, the third block 1703 drives the second block 1702 to extend out from the first accommodating chamber 1704, thereby separating the two adjacent toothed steel plates 15 from the friction plate 16. The temperature of the friction element in the clutch mechanism is monitored by a thermocouple, so that the separation effect of the friction element quick separation device of the present application on the toothed steel plate 15 and the friction plate 16 can be known.

[0067] When the clutch mechanism is engaged / disengaged, lubricating oil is sprayed on the clutch mechanism, which helps to reduce the friction between the toothed steel plate 15 and the friction plate 16 and cool the toothed steel plate 15 and the friction plate 16 , and the excess lubricating oil falls into the oil collecting hopper 13 .

[0068] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0069] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A friction element quick release device, characterized in that: include: A first block (1701) has a first accommodating cavity (1704) at one end, and the first accommodating cavity (1704) is coaxially arranged with the first block (1701); A second block (1702) is slidably connected in the first accommodating cavity (1704); a second accommodating cavity (1705) is formed through the second block (1702); the second accommodating cavity (1705) is coaxially arranged with the second block (1702); and the second block (1702) does not fall out of the first accommodating cavity (1704); A third block (1703) is slidably connected in the second accommodating cavity (1705); a third accommodating cavity (1706) is provided at one end of the third block (1703); the third accommodating cavity (1706) is coaxially arranged with the third block (1703); the opening of the third accommodating cavity (1706) faces the first accommodating cavity (1704); and the third block (1703) does not fall out of the second accommodating cavity (1705); The spring (1707) is inserted into the second accommodating cavity (1705), and two ends of the spring (1707) are respectively in contact with the bottom of the first accommodating cavity (1704) and the bottom of the third accommodating cavity (1706).

2. A friction element quick release device according to claim 1, characterized in that: A mounting hole (1708) is provided at one end of the first block (1701), the opening of the mounting hole (1708) is arranged on the same side as the opening of the first accommodating cavity (1704), and the mounting hole (1708) is close to the outer edge of the first block (1701).

3. A test system for testing the effect of the friction element quick release device according to any one of claims 1 to 2, characterized in that: include: A box body (6), wherein an input shaft (4) and an output shaft (7) are rotatably connected to opposite side walls of the box body (6), and the input shaft (4) and the output shaft (7) are coaxially arranged; a clutch mechanism, arranged between the input shaft (4) and the output shaft (7), the clutch mechanism being connected to the input shaft (4) and the output shaft (7), and the clutch mechanism being provided with a plurality of friction element quick-release devices; A driving mechanism is arranged on one side of the box body (6) and is drivingly connected to the input shaft (4).

4. The test system according to claim 3, characterized in that: The clutch mechanism comprises: A cylinder sleeve (11) is coaxially arranged with the output shaft (7), the cylinder sleeve (11) and the output shaft (7) are connected via a spline, a placement cavity is provided on a side of the cylinder sleeve (11) close to the input shaft (4), a plurality of tooth grooves are circumferentially provided on a side wall of the placement cavity, and the axis of the tooth groove is arranged parallel to the axis of the cylinder sleeve (11); A plurality of toothed steel sheets (15) are coaxially arranged in the placement cavity, the limiting teeth at the outer edges of the toothed steel sheets (15) are slidably connected to the tooth grooves on the cylinder sleeve (11), the friction element quick-detaching device is arranged between two adjacent toothed steel sheets (15), the friction element quick-detaching device is arranged on the limiting teeth, and the plurality of friction element quick-detaching devices located on the same toothed steel sheet (15) are arranged at equal intervals in the circumferential direction; A plurality of friction plates (16) are coaxially arranged in the placement cavity, and the plurality of friction plates (16) and the plurality of toothed steel plates (15) are spaced apart from each other; A transmission gear sleeve (14), one end of which is connected to the inner edge of the friction plate (16) via a spline, the other end of which is coaxially fixed to the input shaft (4), and the toothed steel plate (15) is loosely sleeved on the outer side of the transmission gear sleeve (14); A sleeve (9) is coaxially fixed to the outer side of the input shaft (4), and one end of the sleeve (9) extends into the placement cavity and abuts against the toothed steel sheet (15); The power end of the oil pressure sleeve (10) is coaxially fixed to the output shaft (7), and the output end of the oil pressure sleeve (10) abuts against the cylinder sleeve (11).

5. The test system according to claim 4, characterized in that: A limiting groove is circumferentially provided on the inner side wall of the placement cavity, and a collar (18) is circumferentially provided in the limiting groove. The inner edge of the collar (18) is slidably connected to the outer side wall of the sleeve (9), and the collar (18) does not fall out of the sleeve (9).

6. The test system according to claim 4, characterized in that: A second bracket (12) is fixedly connected below the box body (6), and an oil collecting hopper (13) is arranged on the second bracket (12). The oil collecting hopper (13) is located directly below the clutch mechanism.

7. The test system according to claim 4, characterized in that: An input cover (5) is coaxially sleeved on the outside of the input shaft (4), and an output cover (8) is coaxially sleeved on the outside of the output shaft (7). Both the input cover (5) and the output cover (8) are fixedly connected to the outer wall of the box body (6).

8. The test system according to claim 4, characterized in that: The driving mechanism comprises a first bracket (1), on which a driving motor (2) is fixedly mounted, and an output shaft of the driving motor (2) is connected to the input shaft (4) via a coupling (3).

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