Transmission clutch air tightness and stroke detection device and method

Abstract

The invention discloses a transmission clutch air tightness and stroke detection device and method, and relates to the technical field of transmissions. The transmission clutch air tightness and stroke detection device comprises an air tightness instrument and a measuring mechanism arranged on a frame, an air pipe is arranged between the measuring mechanism and the air tightness instrument, a tray is arranged below the measuring mechanism, a clutch positioning seat is arranged on the tray, the measuring mechanism comprises a stroke detection component and an air tightness detection component arranged below the stroke detection component; the air tightness detection component is arranged between a first end plate and a second end plate, and is limited by the second end plate, the structure is simple, the occupied space is reduced, and it can be conveniently integrated into other equipment; the clutch air tightness detection and stroke detection are carried out simultaneously, the measuring process lasts for 5 seconds, the gas fills the clutch, and the measurement result is guaranteed to be stable and accurate, during the stroke detection, the piston stroke can be calculated by detecting the height difference of the friction plate group before and after the clutch is inflated by the measuring sensor, and the detection efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of transmissions, and in particular to a transmission clutch air tightness and stroke detection device and method. Background Art

[0002] The clutch is an important part of the transmission, which realizes the gear change of the transmission. The clutch includes the clutch outer hub, friction plate group, retaining spring, piston, balance piston, etc. A qualified clutch requires good sealing of the piston cavity and a reasonable stroke of the piston. At present, when testing the air tightness and stroke of the clutch, it is generally manually clamped with the airtight tooling, first use the airtightness meter to measure the air tightness of the clutch, and then use the height gauge to manually measure the piston stroke. The work efficiency is slow and the measurement error is large.

[0003] After searching, the Chinese invention patent with publication number CN118090055A discloses a clutch detection device and its detection method. The measuring mechanism of the clutch detection device includes a stroke detection component, an airtight detection component and a mounting bracket; the mounting bracket is movably arranged on the frame; in the stroke detection component, the counterweight lifting element is fixedly installed on the mounting bracket; the detection bracket is located at the lower side of the mounting bracket, the counterweight is located at the upper side of the detection bracket, and the counterweight is connected to the counterweight lifting element; the lower mounting plate is located at the lower side of the detection bracket, the lower end of the connecting rod is fixedly connected to the lower mounting plate, and the upper end is fixedly connected to the counterweight; the pressure block is fixed on the lower side of the lower mounting plate; the floating probe is slidably arranged in the detection bracket and the lower mounting plate; the stroke elastic element is arranged between the upper end of the floating probe and the detection bracket; the digital measuring instrument is fixedly installed on the detection bracket; the airtight detection component includes a leak test probe; the airtight detection and stroke detection can be completed by one clamping, and the efficiency is high. However, the device has a complex structure and occupies a large space. It can only perform airtight detection first, and after the detection is qualified, the stroke detection is performed multiple times, and the detection efficiency is low. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a transmission clutch air tightness and stroke detection device and method in view of the above shortcomings, which overcomes the defects of the existing equipment such as complex structure, large space occupation and low detection efficiency; and achieves the purpose of simple equipment structure, small space occupation and improved detection efficiency.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a transmission clutch air tightness and stroke detection device, characterized in that: it includes an airtightness instrument and a measuring mechanism arranged on a frame, an air pipe is arranged between the measuring mechanism and the airtightness instrument, a tray is arranged below the measuring mechanism, a clutch positioning seat is arranged on the tray, and the measuring mechanism includes a stroke detection component and an airtightness detection component arranged below the stroke detection component;

[0006] The airtight detection assembly includes a telescopic cylinder, a second floating joint, a clutch plugging head and a plugging head sealing ring, wherein the second floating joint is arranged at the output end of the telescopic cylinder, and the plugging head sealing ring is arranged at the outer periphery of the bottom of the clutch plugging head;

[0007] The stroke detection assembly includes a clamping cylinder, a first floating joint and a counterweight. The first floating joint is arranged at the output end of the clamping cylinder, and the counterweight is arranged below the first floating joint. The first floating joint transmits the pressure of the clamping cylinder and is used to clamp the counterweight. A cylinder seat is fixedly arranged below the clamping cylinder, and the cylinder seat is used to support and fix the clamping cylinder. A connecting plate is fixedly arranged at the bottom end of the cylinder seat, and holes are passed through the connecting plate. The connecting plate is fixed on the frame.

[0008] Furthermore, the counterweight block and the first floating joint are arranged in the cylinder seat, a counterweight block support plate is arranged at the lower end of the counterweight block, the counterweight block support plate is located in the hole inside the connecting plate, a first end plate is arranged at the lower end of the connecting plate, and the counterweight block support plate is arranged on the first end plate.

[0009] Furthermore, a second end plate is provided below the first end plate, and a number of vertical plates are evenly arranged between the first end plate and the second end plate, and a measuring sensor mounting bracket is fixedly provided on the vertical plates, and a measuring sensor is provided on the measuring sensor mounting bracket, and a floating probe is provided at the lower end of the measuring sensor, and a pressure plate is provided below the second end plate, and through holes corresponding to the floating probes are provided on the second end plate and the pressure plate, and the floating probes are slidably arranged in the corresponding through holes up and down.

[0010] Furthermore, a limit screw is also provided on the measuring sensor mounting bracket, and the limit screw is arranged parallel to the measuring sensor;

[0011] An elastic member is arranged between the upper end of the floating probe and the second end plate.

[0012] Furthermore, a connecting column is provided between the counterweight support plate and the pressure plate, the connecting column and the floating probe are evenly spaced, and a pressure block is fixedly provided on the outer edge of the lower end of the pressure plate.

[0013] Furthermore, the second end plate is provided with a through hole corresponding to the clutch sealing head, and a sealing shaft limit block is provided on the second end plate. A hole is passed through the sealing shaft limit block, and the clutch sealing head passes through the second end plate and the sealing shaft limit block and is arranged below the second floating joint.

[0014] Furthermore, an air inlet is provided on the clutch plugging head, and the air inlet is connected to the airtight instrument through an air pipe;

[0015] The first end plate is in the shape of a disk, and the second end plate is in the shape of a cylinder. The second end plate is used to support the floating probe, the clutch plugging head and the connecting column.

[0016] The detection method using the transmission clutch air tightness and stroke detection device comprises the following steps:

[0017] Step 1: Connect the airtightness tester to the measuring mechanism through the air pipe, place the clutch on the clutch positioning seat for positioning, start the pressing cylinder, and the pressing cylinder drives the counterweight, the counterweight support plate, the connecting column, the pressing plate and the pressing block to move downward in sequence to press the friction plate group;

[0018] Step 2: Three measuring sensors measure the height of the upper plane of the friction plate group, and take the average height value as A1 to control the clamping cylinder to reset;

[0019] Step 3: Start the telescopic cylinder, which moves downward to press the clutch plugging head into the clutch;

[0020] Step 4: Start the air tightness tester and fill the clutch with air. If the clutch leakage is less than the set value, the air tightness is considered qualified.

[0021] The clutch remains inflated, the friction plate group rises, and the three measuring sensors measure the height of the upper plane of the friction plate group after inflation. The average height value is taken as A2, and the height difference between A2 and A1 is the piston stroke.

[0022] The present invention adopts the above technical scheme, and has the following advantages compared with the prior art: the airtight detection component is arranged between the first end plate and the second end plate, and is limited by the second end plate, with a simple structure, reduced space occupation, and can be conveniently integrated into other equipment; the clutch airtightness detection and stroke detection are carried out simultaneously, and the measurement process lasts for 5 seconds, so that the gas fills the clutch, ensuring that the measurement results are stable and accurate; during the stroke detection, the piston stroke can be calculated by detecting the height difference of the friction plate group before and after the clutch is inflated by measuring the sensor, and the detection efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a transmission clutch air tightness and stroke detection device in an embodiment of the present invention;

[0024] Figure 2 It is a front view of the transmission clutch air tightness and stroke detection device in the embodiment of the present invention;

[0025] Figure 3 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0026] Figure 4 A top view of a transmission clutch air tightness and stroke detection device in an embodiment of the present invention;

[0027] Figure 5 for Figure 4 Sectional view at the middle BB;

[0028] Figure 6 for Figure 5 The enlarged schematic diagram of the center C;

[0029] Figure 7 It is a schematic structural diagram of a clutch plugging head in an embodiment of the present invention.

[0030] In the figure: 1-connecting plate, 2-first end plate, 3-vertical plate, 4-floating probe, 5-counterweight, 6-measuring sensor, 7-pressure plate, 8-pressure block, 9-pressing cylinder, 10-cylinder seat, 11-first floating joint, 12-telescopic cylinder, 13-second floating joint, 14-clutch plugging head, 15-clutch, 16-trachea, 17-air tightness instrument, 18-tray, 19-clutch positioning seat, 20-measuring mechanism, 21-connecting column, 22-second end plate, 24-elastic member, 25-measuring sensor mounting bracket, 26-limiting screw, 27-blocking shaft limit block, 28-counterweight support plate, 29-blocking head sealing ring. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] Examples, such as Figure 1-7 As shown, the transmission clutch air tightness and stroke detection device includes an air tightness instrument 17 and a measuring mechanism 20 arranged on a frame, and an air pipe 16 is arranged between the measuring mechanism 20 and the air tightness instrument 17. A tray 18 is arranged below the measuring mechanism 20, and a clutch positioning seat 19 is arranged on the tray 18. The clutch positioning seat 19 is used to position the clutch 15. The measuring mechanism 20 includes an air tightness detection component and a stroke detection component.

[0033] The stroke detection assembly includes a clamping cylinder 9, a first floating joint 11 and a counterweight 5. The first floating joint 11 is arranged at the output end of the clamping cylinder 9. The sealing head sealing ring 29 is arranged on the bottom periphery of the clutch sealing head 14. The counterweight 5 is arranged below the first floating joint 11. The first floating joint 11 transmits the pressure of the clamping cylinder 9 and is used to clamp the counterweight 5. A cylinder seat 10 is fixedly arranged below the clamping cylinder 9. The cylinder seat 10 is used to support and fix the clamping cylinder 9. A connecting plate 1 is fixedly arranged at the bottom end of the cylinder seat 10. There are holes running through the inside of the connecting plate 1, and the connecting plate 1 is fixed on the frame.

[0034] The counterweight block 5 and the first floating joint 11 are arranged in the cylinder seat 10. A counterweight block support plate 28 is arranged at the lower end of the counterweight block 5. The counterweight block support plate 28 is located in the hole inside the connecting plate 1. A first end plate 2 is arranged at the lower end of the connecting plate 1, and the counterweight block support plate 28 is arranged on the first end plate 2.

[0035] A second end plate 22 is provided below the first end plate 2, and a plurality of vertical plates 3 are evenly provided between the first end plate 2 and the second end plate 22, three in this case, and a measuring sensor mounting bracket 25 is fixedly provided on the vertical plates 3, a measuring sensor 6 is provided on the measuring sensor mounting bracket 25, and a floating probe 4 is provided at the lower end of the measuring sensor 6. A pressing plate 7 is provided below the second end plate 22, and through holes corresponding to the floating probe 4 are provided on the second end plate 22 and the pressing plate 7, and the floating probe 4 is slidably arranged in the corresponding through holes.

[0036] The measuring sensor mounting bracket 25 is also provided with a limit screw 26 , and the limit screw 26 is arranged parallel to the measuring sensor 6 .

[0037] An elastic member 24 is provided between the upper end of the floating probe 4 and the second end plate 22 .

[0038] A connecting column 21 is provided between the counterweight support plate 28 and the pressing plate 7 . The connecting column 21 and the floating probe 4 are evenly spaced. A pressing block 8 is fixedly provided on the outer edge of the lower end of the pressing plate 7 .

[0039] The airtight detection assembly includes a telescopic cylinder 12, a second floating joint 13, a clutch plugging head 14 and a plugging head sealing ring 29 arranged below the first end plate 2. The second floating joint 13 is arranged at the output end of the telescopic cylinder 12. The second end plate 22 is provided with a through hole corresponding to the clutch plugging head 14. A plugging shaft limit block 27 is provided on the second end plate 22. A hole passes through the plugging shaft limit block 27. The clutch plugging head 14 passes through the second end plate 22 and the plugging shaft limit block 27 and is arranged below the second floating joint 13.

[0040] The clutch plugging head 14 is provided with an air inlet, which is connected to the airtightness instrument 17 through an air pipe 16. The clutch plugging head 14 is a prior art and will not be described in detail here.

[0041] The shapes of the first end plate 2 and the second end plate 22 are not limited. In this example, the first end plate 2 is disc-shaped, and the second end plate 22 is cylindrical. The second end plate 22 is used to support the floating probe 4, the clutch plugging head 14 and the connecting column 21.

[0042] The detection method of the transmission clutch air tightness and stroke detection device comprises the following steps:

[0043] Step 1: Connect the airtightness meter 17 to the measuring mechanism 20 through the air pipe 16, place the clutch 15 on the clutch positioning seat 19, and start the clamping cylinder 9 after positioning. The clamping cylinder 9 drives the counterweight 5, the counterweight support plate 28, the connecting column 21, the pressure plate 7 and the pressure block 8 to move downward in turn to compress the friction plate group.

[0044] Step 2: Three measuring sensors 6 measure the height of the upper plane of the friction plate group, take the average height value as A1, and control the clamping cylinder 9 to reset.

[0045] Step 3: Start the telescopic cylinder 12, which moves downward to press the clutch plugging head 14 into the clutch 15.

[0046] Step 4, start the airtightness tester 17, and the gas is inflated into the clutch 15 through the air pipe 16 and the clutch sealing head 14. The airtightness tester 17 applies 4 bar pressure to the clutch 15 and maintains it for 5 seconds to fill the clutch 15 with gas. The airtightness of the clutch is tested. If the leakage is less than 5 ml / min, it is judged that the airtightness is qualified. The airtightness tester automatically determines whether it is qualified, and the airtightness test is completed.

[0047] The clutch 15 remains in an inflated state, and the friction plate group rises. At this time, the three measuring sensors 6 measure the average height of the upper plane of the friction plate group after inflation. The height value is A2, and the height difference between A2 and A1 is the piston stroke.

[0048] The airtight detection component is arranged between the first end plate 2 and the second end plate 22, and is limited by the second end plate 22. It has a simple structure, reduces the occupied space, and can be easily integrated into other equipment. The clutch airtightness detection and stroke detection are carried out simultaneously, and the measurement process lasts for 5 seconds to allow the gas to fill the clutch 15, ensuring that the measurement result is stable and accurate. During the stroke detection, the piston stroke can be calculated by detecting the height difference of the friction plate group before and after the clutch 15 is inflated through the measuring sensor 6, and the detection efficiency is high.

[0049] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. Transmission clutch air tightness and stroke detection device, characterized in that: The device comprises an airtightness instrument (17) and a measuring mechanism (20) arranged on a frame, an air pipe (16) being arranged between the measuring mechanism (20) and the airtightness instrument (17), a tray (18) being arranged below the measuring mechanism (20), a clutch positioning seat (19) being arranged on the tray (18), and the measuring mechanism (20) comprising a stroke detection component and an airtightness detection component arranged below the stroke detection component; The airtightness detection assembly comprises a telescopic cylinder (12), a second floating joint (13), a clutch plugging head (14) and a plugging head sealing ring (29) arranged below the first end plate (2); the second floating joint (13) is arranged at the output end of the telescopic cylinder (12); and the plugging head sealing ring (29) is arranged at the outer periphery of the bottom of the clutch plugging head (14); The stroke detection assembly comprises a pressing cylinder (9), a first floating joint (11) and a counterweight (5), wherein the first floating joint (11) is arranged at the output end of the pressing cylinder (9), and the counterweight (5) is arranged below the first floating joint (11). The first floating joint (11) transmits the pressure of the pressing cylinder (9) and is used to press the counterweight (5). A cylinder seat (10) is fixedly arranged below the pressing cylinder (9), and the cylinder seat (10) is used to support and fix the pressing cylinder (9). A connecting plate (1) is fixedly arranged at the bottom end of the cylinder seat (10), and a hole is penetrated inside the connecting plate (1). The connecting plate (1) is fixed on the frame. The counterweight (5) and the first floating joint (11) are arranged in the cylinder seat (10); a counterweight support plate (28) is arranged at the lower end of the counterweight (5); the counterweight support plate (28) is located in a hole inside the connecting plate (1); a first end plate (2) is arranged at the lower end of the connecting plate (1); and the counterweight support plate (28) is arranged on the first end plate (2); A second end plate (22) is provided below the first end plate (2), a plurality of vertical plates (3) are evenly arranged between the first end plate (2) and the second end plate (22), a measuring sensor mounting bracket (25) is fixedly arranged on each vertical plate (3), a measuring sensor (6) is arranged on the measuring sensor mounting bracket (25), a floating probe (4) is provided at the lower end of the measuring sensor (6), a pressing plate (7) is provided below the second end plate (22), through holes corresponding to the floating probe (4) are provided on the second end plate (22) and the pressing plate (7), and the floating probe (4) is slidably arranged in the corresponding through holes. A limit screw (26) is also provided on the measuring sensor mounting bracket (25), and the limit screw (26) is arranged parallel to the measuring sensor (6); An elastic member (24) is provided between the upper end of the floating probe (4) and the second end plate (22); A connecting column (21) is provided between the counterweight support plate (28) and the pressing plate (7), the connecting column (21) and the floating probe (4) are evenly spaced, and a pressing block (8) is fixedly provided on the outer edge of the lower end of the pressing plate (7); The second end plate (22) is provided with a through hole corresponding to the clutch plugging head (14); a plugging shaft limit block (27) is provided on the second end plate (22); a hole is penetrated inside the plugging shaft limit block (27); the clutch plugging head (14) passes through the second end plate (22) and the plugging shaft limit block (27) and is arranged below the second floating joint (13); The clutch plugging head (14) is provided with an air inlet, which is connected to the airtightness instrument (17) via an air pipe (16); The first end plate (2) is disc-shaped, the second end plate (22) is cylindrical, and the second end plate (22) is used to support the floating probe (4), the clutch plugging head (14) and the connecting column (21).

2. A detection method using the transmission clutch air tightness and stroke detection device as claimed in claim 1, characterized in that: The following steps are involved: Step 1, connecting the airtightness instrument (17) to the measuring mechanism (20) through the air pipe (16), placing the clutch (15) on the clutch positioning seat (19) for positioning, starting the pressing cylinder (9), and the pressing cylinder (9) sequentially drives the counterweight (5), the counterweight support plate (28), the connecting column (21), the pressing plate (7) and the pressing block (8) to move downward to press the friction plate group; Step 2: Three measuring sensors (6) measure the height of the upper plane of the friction plate group, take the average height value as A1, and control the clamping cylinder (9) to reset; Step 3: Start the telescopic cylinder (12), which moves downward to press the clutch plug (14) into the clutch (15); Step 4, start the air tightness tester (17) to charge the clutch (15) with air so that the clutch (15) is fully filled with air. If the clutch leakage is less than a set value, the air tightness is determined to be qualified. The clutch (15) remains in an inflated state, the friction plate group rises, and the three measuring sensors (6) measure the height of the upper plane of the friction plate group after inflation, and the average height value is taken as A2. The height difference between A2 and A1 is the piston stroke.

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