CN102269678A - Testing device for temperature measurement of wet multi-plate clutch friction steel disc - Google Patents
Testing device for temperature measurement of wet multi-plate clutch friction steel disc Download PDFInfo
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- CN102269678A CN102269678A CN 201110123911 CN201110123911A CN102269678A CN 102269678 A CN102269678 A CN 102269678A CN 201110123911 CN201110123911 CN 201110123911 CN 201110123911 A CN201110123911 A CN 201110123911A CN 102269678 A CN102269678 A CN 102269678A
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Abstract
The invention discloses a testing device for temperature measurement of a wet multi-plate clutch friction steel disc. The device comprises a power transmission mechanism, a testing mechanism, a hydraulic system and a control system. Specifically, the output of the power transmission mechanism is connected to a testing chamber input shaft of the testing mechanism, and a rotating speed and torque sensor is installed at the front end of the testing chamber input shaft; the inside of the testing chamber of the testing mechanism is provided with friction plates to be tested and testing friction steel discs; the testing chamber is equipped with an oil pressure inlet pipe joint, which is communicated with a hydraulic pressurization mechanism inwards and connected to a hydraulic system outwards, and the testing chamber is respectively provided with a cooling lubricating oil inlet pipe joint and a cooling lubricating oil outlet pipe joint which are inwardly communicated with the friction plates to be tested and the testing friction steel discs and respectively connected to the hydraulic system outwardly. With simple structure and low cost, the device provided in the invention can simulate the operation condition of a wet multi-plate clutch and is easy to be implemented, thus satisfying the need for a verification test during clutch design and analysis.
Description
Technical field
The present invention relates to a kind of experimental technique of multi-disc wet clutch, be specifically related to a kind of test unit of automobile-used multi-disc wet clutch friction steel disc temperature.
Background technology
Universal day by day along with automobile, the multi-disc wet clutch with good heat radiating and friction control performance has obtained using widely, particularly is widely used in the various automatic transmission for vehicles.Because the control performance of multi-disc wet clutch is directly connected to the gearshift Performance And Reliability of car load, be the key core parts of automatic transmission therefore.
In the process of control multi-disc wet clutch power transmission and cut-out, in order to reduce impact, system usually realizes by the torque of control multi-disc wet clutch transmission and the mode of slippage, transmit in the moment of torsion process in control, if it is long that the bad lasting sliding wear time is controlled in the moment of torsion transmission, friction disc and antithesis steel disc can be ablated and distortion because a large amount of heats that sliding wear produces cause friction disc and antithesis steel disc to produce; On the other hand, in the clutch designing process, if the clutch torque capacity of design is not enough, perhaps bad bias voltage, the eccentric wear of causing of design such as clutch friction plate or platen, so that produce the temperature rise and the ablation of clutch friction plate part, finally cause the inefficacy of transmission and the damage of variator, bring great threat for the safety traffic of automobile.
In order to satisfy the needs of multi-disc wet clutch design and control, hope is measured the temperature of friction steel disc under the multi-disc wet clutch operating condition, wish the test unit of a kind of multi-disc wet clutch friction of design steel disc temperature detection, for the thermal capacity of multi-disc wet clutch and convection heat transfer design and control provide test support: the engagement oil that in testing table, can regulate multi-disc wet clutch, the cooling and lubricating flow quantity, active input speed and flywheel group inertia (to adjust the energy of input), by being arranged on the temperature sensor on the testing equipment friction steel disc, the multi-disc wet clutch cold oil advances, outlet temperature sensor, the cold oil flow sensor, the oil pressure sensor of multi-disc wet clutch, the axle pressure sensor, clutch coupling is realized temperature rise and friction isoparametric monitoring of control performance and test to multi-disc wet clutch under the different set operating mode in conjunction with rotating speed and transmitting torque sensor.
" the friction of control automatically of invention disclosed patented claim 200610104641.7, abrasion performance testing machine " and the utility model patent ZL200620135851.8 that authorizes in introduced a kind of friction of automatic control, abrasion performance testing machine, patent documentation shows, this testing machine has only carried out the system reform to the structure division that the incompatibility robotization of all manual operation forms in the conventional frictional testing machine is controlled, can only finish friction factor under the clutch coupling normal temperature, the test of base regimes such as polishing machine, this testing table adopts pneumatic mode to carry out the control of clutch coupling and the loading of friction member, because gas compressibility is big, Pneumatic pressure control mode performance is poor, testing table does not have multi-disc wet clutch test oil temperature to set and supervisory system, can not detect test to the rub distribution situation of steel disc circumference and axial temperature of multi-disc wet clutch, can not truly reflect multi-disc wet clutch temperature field distribution situation in the course of the work.
In order to satisfy wet clutch under the simulated condition condition, the test of friction steel disc axial and circumferential Temperature Distribution situation needs, this patent has adopted Controllable Temperature, hydraulic power unit system that lubrication flow is adjustable, designed the test unit of testing friction steel disc Temperature Distribution, method by circumferential on fixing friction disc and axial arranged temperature sensor has realized the collection to clutch temp.
Summary of the invention
The invention provides a kind of multi-disc wet clutch friction steel disc temperature detection test unit, purpose is in order to satisfy under the multi-disc wet clutch dry run operating mode, to the clutch friction steel disc circumferentially and axial temperature carry out the measurement demand, for clutch designing and control provide certificate parameter.
Technical scheme of the present invention is as follows:
A kind of multi-disc wet clutch friction steel disc temperature detection test unit, it comprises power drive mechanism, test mechanism, hydraulic system and control system.
The output of described power drive mechanism is connected with the chamber input shaft of test mechanism, and at the front end of chamber input shaft torque and speed sensors is set;
The chamber inside of described test mechanism is equipped with and is waited to try friction disc and test friction steel disc; The chamber input shaft links with friction disc to be tried, and the casing of chamber links with test friction steel disc, and the casing of chamber is connected with fixing force transducer by the braking arm of force that connects firmly; Wait to try the friction disc front end and be provided with hydraulic pressurization mechanism on the chamber input shaft, be provided with the axle pressure sensor at test friction steel disc end, action of hydraulic force is in friction disc to be tried, and is delivered to the axle pressure sensor; Circumferentially evenly be furnished with temperature sensor at each sheet test friction steel disc; Chamber is provided with oil pressure inlet tube joint, it inwardly is communicated with hydraulic pressurization mechanism, outwards connect hydraulic system, cutting oil oil-in pipe adapter and cutting oil oil-out pipe adapter are set respectively in chamber, their inside connection test friction steel disc and friction discs to be tried outwards connect hydraulic system respectively;
Described control system is connected with power drive mechanism and above-mentioned various sensor respectively with signal wire by control line;
The hydraulic pressurization mechanism of described test mechanism comprises the axis of the piston, piston, axial dimension adjustment ring, axial force force transmission ring, butterfly spring, spring washer, hexagon socket head cap screw and gland.Oil pressure inlet tube joint in chamber is communicated with the space of the piston nose of hydraulic pressurization mechanism.
The present invention adopts variable-frequency motor as power source, and variable-frequency motor is by electromagnetic clutch and inertial flywheel set associative, and the inertial flywheel group links by torque and speed sensors and multi-disc wet clutch friction steel disc temperature detection test casing.The moment of inertia of flywheel can be regulated, the rotating speed of variable-frequency motor also can be adjusted, electromagnetic clutch can controlled disengagement and combination, by changing variable-frequency motor rotating speed and flywheel inertia, can change the intake and the rotating speed of multi-disc wet clutch, in the experimentation, when the flywheel rotating speed reaches the setting rotating speed and keeps stablizing, can throw off electromagnetic clutch rapidly, pressure by control multi-disc wet clutch plunger shaft, controlled in conjunction with multi-disc wet clutch, the multi-disc wet clutch shell connects firmly mutually with friction steel disc temperature detection test casing, the experiment casing also is fixed on the base by force transducer, when clutch coupling in conjunction with the time because the restriction of force transducer, multi-disc wet clutch plays the detent effect, the braking torque that produces is that flywheel slows down the axial force that clutch plunger produced, the braking torque that clutch brake produces, rotating speed all can measure by sensor.
In the experimentation, the plunger shaft pressure and the lubrication flow of the multi-disc wet clutch of tested person all can be regulated, the passing ratio valve is realized the control to Clutch Control pressure in the hydraulic system, by flow speed control valve the lubrication flow of clutch coupling is regulated, also designed corresponding heating and cooling system in the hydraulic system, can control the lubricating oil temperature of multi-disc wet clutch.
In order to realize that multi-disc wet clutch friction steel disc circumferential and axial Temperature Distribution is measured, the present invention all is furnished with many temperature sensors at the radial and axial of friction steel disc, can measure the Temperature Distribution of axial and circumferential of friction steel disc, also be furnished with pressure and lubricated special oil circuit in the test casing.By changing the frock in the test casing, can test detection to the friction steel disc Temperature Distribution of a series of different size models.
Relative prior art, the present invention has following advantage and characteristics:
1) the present invention has adopted Controllable Temperature, hydraulic power unit system that lubrication flow is adjustable, designed the test unit of testing friction steel disc Temperature Distribution, method by circumferential on fixing friction disc and axial arranged temperature sensor has realized the collection to clutch temp.
2) multi-disc wet clutch involved in the present invention friction steel disc temperature-detecting device, simple in structure, with low cost, can simulate the operating condition of multi-disc wet clutch, easy to implement, can satisfy the validation test needs in clutch designs and the analytic process.
Description of drawings
Accompanying drawing is principle of the present invention and structural representation:
Fig. 1 is the multi-disc wet clutch friction steel disc temperature detection test-bed transmission principle figure of system;
Fig. 2 is a multi-disc wet clutch friction steel disc temperature detection test-bed hydrostatic control schematic diagram;
Fig. 3 A is the position synoptic diagram of multi-disc wet clutch friction steel disc temperature sensor;
Fig. 3 B is the A-A cut-open view of Fig. 3 A;
Fig. 4 is a multi-disc wet clutch friction steel disc temperature detection chamber body structure schematic diagram;
Fig. 5 is a multi-disc wet clutch friction steel disc temperature detection test-bed control structure schematic diagram.
Among Fig. 1, the 101-variable-frequency motor, the 103-electromagnetic clutch, 105-moment of inertia flywheel group, 107-rotating speed and torque sensor, 108-chamber input shaft, 109-tests casing, and 110-brakes the arm of force, 111-force transducer;
Among Fig. 2,1-oil pump oil-out oil circuit, 2-safety overflow valve oil circuit, 3-proportioning valve pressure control oil circuit, 4-accumulator oil circuit, 5-multi-disc wet clutch pressure oil circuit, 6-multi-disc wet clutch lubricating oil return road, 7-tensimeter, 8-multi-disc wet clutch lubricant passage way, 9-oil pump inlet port oil circuit, 10-oil pump oil return line, 16-proportion magnetic valve, the 17-safety overflow valve, 18-flow speed control valve, 19-oil pressure pressure transducer, the 20-fuel outlet valve, 21-tank cooler, 22-liquid level gauge, the 23-insulation oil tank, 24-fuel tank heater, 25-butterfly valve, 26-oil suction filtrator, 27-heatproof gear-type pump, 28-fine filter, the 30-Oil pump electrical machinery, 31-air cleaner, 32-level switch, the warm temperature sensor of 33-oil, 34-cooling water valve, 35-cooling water filter, 37-accumulator stop valve, the 38-accumulator, 39-flowmeter, 50-Oil pump electrical machinery shaft coupling;
Among Fig. 3 A and Fig. 3 B, the 201-friction disc 202-steel disc that rubs, 203(a-f)-first temperature sensor of a friction steel disc circumferential arrangement, 204(a-f)-second temperature sensor of a friction steel disc circumferential arrangement, 205(a-f)-the 3rd temperature sensor of a friction steel disc circumferential arrangement, 206(a-f)-the 4th temperature sensor of a friction steel disc circumferential arrangement;
Among Fig. 4,108-chamber input shaft, 109-tests casing, 110-brakes the arm of force, 111-force transducer, the 202-steel disc that rubs, the 301-copper sheathing, the 302-circlip, the 303-angular contact ball bearing, 304-end cap, 305-the axis of the piston, the big O RunddichtringO of 306-the axis of the piston, the little O RunddichtringO of 307-the axis of the piston, 308-oil pressure inlet tube joint, the outer O RunddichtringO of 309-piston, the 310-piston, the 311-hold-down support, 312-temperature sensor outlet plug, 313-test case lid O RunddichtringO, 314-tests case lid, the outer hub of 315-clutch coupling, 316-axial dimension adjustment ring, 317-axial force force transmission ring, 318-axle pressure sensor, the 319-friction disc is installed wheel hub, 320-angular contact ball bearing, 321-elastic shaft back-up ring, 322-cutting oil oil-in pipe adapter, 323-axial locking nut, 324-cutting oil oil-out pipe adapter, 325-butterfly spring, the 326-spring washer, the 327-hexagon socket head cap screw, the 328-gland, P1-engages the fluid import, P2-oil cylinder chamber, K1-cooling and lubricating oil-in, the cooling and lubricating oil export on the K2-chamber input shaft 108, K3-wheel hub cooling and lubricating oil duct, back oil road on the outer hub 315 of K4-clutch coupling, K5-cooling and lubricating oil export;
Among Fig. 5, the 16-proportion magnetic valve, 19-oil pressure pressure transducer, the 24-fuel tank heater, the warm temperature sensor of 33-oil, the 34-cooling water valve, 39 is flowmeter, the 60-motor speed sensor, 103-electromagnetic clutch, 107-rotating speed and torque sensor, 203(a-f)-first temperature sensor of a friction steel disc circumferential arrangement, 204(a-f)-second temperature sensor of a friction steel disc circumferential arrangement, 205(a-f)-the 3rd temperature sensor of a friction steel disc circumferential arrangement, 206(a-f)-the 4th temperature sensor of a friction steel disc circumferential arrangement; 318-axle pressure sensor, 401-host computer, 402-slave computer real-time controller, the 403-input/output module, 410-display, 411-main frame, the 412-netting twine, 413-DDR2 RAM, 414-real-time controller, the 415-multi-function data acquisition card, 416-COM mouth, 419-AO and DIO card, the 420-terminal box, the 421-frequency converter, 423-signal conditioning circuit, 425-amplifier.
Embodiment
Below with reference to accompanying drawing concrete enforceable mode of the present invention is described:
The temperature detection test unit of this multi-disc wet clutch friction steel disc comprises power drive mechanism, test mechanism, hydraulic system and control system.
In conjunction with Fig. 1, Fig. 3 A and Fig. 3 B, power drive system mainly comprises variable-frequency motor 101, electromagnetic clutch 103, moment of inertia flywheel group 105, rotating speed and torque sensor 107, chamber input shaft 108, test casing 109, the braking arm of force 110, force transducer 111.Wherein variable-frequency motor 101 links with electromagnetic clutch, variable-frequency motor 101 is as power source output speed and torque, electromagnetic clutch 103 can controllably carry out the switching of kinematic train power fast, electromagnetic clutch 103 links to each other with moment of inertia flywheel group 105, the inertia of moment of inertia flywheel group 105 can change, by making up different flywheel inertias and different input motor speeds, can simulate different intakes and give test clutch, inertial flywheel group 105 is connected with test casing 109 by torque and speed sensors 107, can detect torque and the corresponding rotating speeds that 109 pairs of inertial flywheel groups 105 of test casing are applied by torque and speed sensors 107.Test parts such as friction disc 201 that test casing 109 inside remain to be tried and friction steel disc 202.Test casing 109 can rotate relative to chamber input shaft 108, chamber input shaft 108 links with friction disc 201, test casing 109 links with friction steel disc 202, test casing 109 is connected with fixing force transducer 111 by the braking arm of force 110 that connects firmly, multiply by the length of braking the arm of force 110 again by the power that detects force transducer 111, can measure 202 torque transmitted of friction steel disc.
In order to measure the friction steel disc in of the distribution of circumferential and a plurality of friction steel discs in axial temperature, arranged the temperature sensor 203(a-f of first friction steel disc circumferential arrangement in the friction test device relevant position), the temperature sensor 204(a-f of second friction steel disc circumferential arrangement), the temperature sensor 205(a-f of the 3rd friction steel disc circumferential arrangement), the temperature sensor 206(a-f of the 4th friction steel disc circumferential arrangement).
In the process of the test, elder generation's test inertia as required, adjust the flywheel inertia that inertial flywheel group 105 is connected firmly, adjust test parameterss such as test oil temperature by the test demand, in conjunction with electromagnetic clutch 103, according to the test speed of setting, progressively increase the output speed of variable-frequency motor 101, until test speed, work as stabilization of speed, throw off electromagnetic clutch 103 fast, simultaneously the setting rotating speed of variable-frequency motor 101 is reduced to zero, kinematic train continues rotation with inertia, friction disc 201 in the control test casing 109 and friction steel disc 202, because of test casing 109 is connected with fixing force transducer 111 by the braking arm of force 110 that connects firmly, produce braking action, flywheel is produced braking, by torque and speed sensors 107, the length of the force transducer 111 and the braking arm of force 110, friction disc temperature sensor 203 ~ 206(a ~ f) wait sensor can the experiment with measuring process in correlation parameter.When the flywheel rotating speed is zero, wait a moment, in conjunction with electromagnetic clutch 103, can carry out new test once more.
Referring to Fig. 2, hydraulic system mainly comprises oil pump oil-out oil circuit 1, safety overflow valve oil circuit 2, proportioning valve pressure control oil circuit 3, accumulator oil circuit 4, multi-disc wet clutch pressure oil circuit 5, multi-disc wet clutch lubricating oil return road 6, tensimeter 7, multi-disc wet clutch lubricant passage way 8, oil pump inlet port oil circuit 9, oil pump oil return line 10, proportion magnetic valve 16, safety overflow valve 17, flow speed control valve 18, oil pressure pressure transducer 19, fuel outlet valve 20, tank cooler 21, liquid level gauge 22, insulation oil tank 23, fuel tank heater 24, butterfly valve 25, oil suction filtrator 26, heatproof gear-type pump 27, fine filter 28, Oil pump electrical machinery 30, air cleaner 31, level switch 32, the warm temperature sensor 33 of oil, cooling water valve 34, cooling water filter 35, accumulator stop valve 37, accumulator 38, flowmeter 39, Oil pump electrical machinery shaft coupling 50;
In process of the test, open the cooling cooling system by control cooling water valve 34, control fuel tank heater 24 starting temperature elevation systems can be realized the control to the oil temperature; By the output current of control ratio valve, can realize by regulating the size of flow speed control valve 18, can regulating to the lubrication flow of multi-disc wet clutch lubricant passage way 8 to of the control of test casing 109 internal clutch in conjunction with pressure.This hydraulic system provides required controlled pressure of process of the test and lubrication flow, simultaneously the lubricating oil temperature as test condition is regulated and control.
Fig. 4 is a multi-disc wet clutch friction steel disc temperature detection chamber body structure schematic diagram, and this structure mainly comprises: chamber input shaft 108, test casing 109, the braking arm of force 110, force transducer 111, friction steel disc 202, copper sheathing 301, circlip 302, angular contact ball bearing 303, end cap 304, the axis of the piston 305, the big O RunddichtringO 306 of the axis of the piston, the little O RunddichtringO 307 of the axis of the piston, oil pressure inlet tube joint 308, the outer O RunddichtringO 309 of piston, piston 310, hold-down support 311, temperature sensor outlet plug 312, test case lid O RunddichtringO 313, test case lid 314, the outer hub 315 of clutch coupling, axial dimension adjustment ring 316, axial force force transmission ring 317, axle pressure sensor 318, friction disc is installed wheel hub 319, angular contact ball bearing 320, elastic shaft back-up ring 321, cutting oil oil-in pipe adapter 322, axial locking nut 323, cutting oil oil-out pipe adapter 324, butterfly spring 325, spring washer 326, hexagon socket head cap screw 327, gland 328 etc.
Wherein test casing 109, the axis of the piston 305, test case lid 314 has constituted the test cavity of relative closure jointly, the big O RunddichtringO 306 of the axis of the piston is arranged between the web member, test case lid O RunddichtringO 313 seals, the axis of the piston 305 of chamber one end is supported on chamber input shaft 108 by angular contact ball bearing 303, one end of chamber is supported on the chamber input shaft 108 equally by angular contact ball bearing 320, and angular contact ball bearing 303 and 320 carries out axial location by circlip 302, elastic shaft back-up ring 321, end cap 304 test case lids 314.Piston 310 is supported on the axis of the piston 305, and is furnished with the little O RunddichtringO 307 of the axis of the piston at the Internal and external cycle of piston 310, and the outer O RunddichtringO 309 of piston seals.With gland 328, butterfly spring 325, friction disc are installed wheel hub 319 axial location by axial locking nut 323, at butterfly spring 325, under the effect of gland 328, push piston 310 to the left side, rub this moment steel disc 202 and friction disc 201 to be tried thrown off, between the two transmitting torque not.The outer hub 315 of clutch coupling is fixed on the multiplate clutch friction steel disc temperature detection test casing 109 by hold-down support 311, friction disc is installed wheel hub 319 and is contained on the chamber input shaft 108 by spline, by changing the outer hub 315 of different clutch couplinges by hold-down support 311, different friction disc installation wheel hubs 319 just can carry out different clutch couplinges to be tested.Test friction steel disc 202 and friction disc 201 to be tried are by axial dimension adjustment ring 316, axial force force transmission ring 317 is fitted with axle pressure sensor 318, the hydraulic coupling that piston 310 transmits can be delivered on the axle pressure sensor 318 by friction steel disc 202 and friction disc 201, axial dimension adjustment ring 316, axial force force transmission ring 317.Test casing 109 is connected with fixing force transducer 111 by the braking arm of force 110 that connects firmly, and multiply by the length of braking the arm of force 110 again by the power that detects force transducer 111, can measure 202 torque transmitted of friction steel disc.
In process of the test, self-wetted multiplate clutch pressure oil circuit 5 is by oil pressure inlet tube joint 308, the lubricant passage way 8 of self-wetted multiplate clutch inserts multi-disc wet clutch friction steel disc temperature detection test casing 109 by cutting oil oil-in pipe adapter 322, pass through cutting oil oil-out pipe adapter 324, multi-disc wet clutch lubricating oil return road 6, oil pump oil return line 10 from the oil return that multi-disc wet clutch is lubricated, finally flow back to insulation oil tank 23.When not acting on oil pressure, at butterfly spring 325, under the effect of gland 328, push piston 310 to the left side, rub this moment steel disc 202 and friction disc 201 to be tried are thrown off, between the two transmitting torque not; When the joint fluid of clutch coupling by P1, P2 enters the oil cylinder chamber, piston 310 overcomes butterfly spring 325 pressure, promote friction steel disc 202 and friction disc 201 combinations, be delivered on the axle pressure sensor 318 by friction steel disc 202 and friction disc 201, axial dimension adjustment ring 316, axial force force transmission ring 317 in conjunction with oil pressure, this pressure pressing friction steel disc 202 and friction disc 201 produce retarding torque, to the flywheel group 105(Fig. 1 that rotates) brake.Chamber input shaft 108 is the axle construction of hollow, the lubricant passage way 8 of self-wetted multiplate clutch is by cutting oil oil-in pipe adapter 322, cooling and lubricating oil-in K1, cooling and lubricating oil export K2 on the chamber input shaft 108, wheel hub cooling and lubricating oil duct K3, back oil road K4 on the outer hub 315 of clutch coupling, cooling and lubricating oil export K5 is lubricated cooling to drive disk assembly.
Fig. 5 is a multi-disc wet clutch friction steel disc temperature detection test-bed control system schematic diagram, and system mainly comprises: proportion magnetic valve 16, oil pressure pressure transducer 19, fuel tank heater 24, oily temperature temperature sensor 33, cooling water valve 34, flowmeter 39, motor speed sensor 60, electromagnetic clutch 103, rotating speed and torque sensor 107, the temperature sensor 203(a-f of first friction steel disc circumferential arrangement), the temperature sensor 204(a-f of second friction steel disc circumferential arrangement), the temperature sensor 205(a-f of the 3rd friction steel disc circumferential arrangement), the temperature sensor 206(a-f of the 4th friction steel disc circumferential arrangement), axle pressure sensor 318, host computer 401, slave computer real-time controller 402, input/output module 403, display 410, main frame 411, netting twine 412, DDR2RAM 413, real-time controller 414, multi-function data acquisition card 415, com port 416, AO and DIO card 419, terminal box 420, frequency converter 421, signal conditioning circuit 423, amplifier 425 etc.Controller mainly is divided into host computer 401, slave computer real-time controller 402, and 403 3 parts of input/output module, wherein display 410, and main frame 411 has constituted host computer 401 parts; Slave computer real-time controller 402 is mainly by DDR2RAM 413, and real-time controller 414 constitutes, and host computer 401 connects by netting twine 412 between the slave computer real-time controller 402; Multi-function data acquisition card 415, com port 416, AO and DIO card 419, terminal box 420, frequency converter 421, signal conditioning circuit 423, amplifier 425 grades have constituted input/output module 403.
In the control procedure, from oil pressure pressure transducer 19, the warm temperature sensor 33 of oil, flowmeter 39, rotating speed and torque sensor 107, motor speed sensor 60, the temperature sensor 203(a-f of first friction steel disc circumferential arrangement), the temperature sensor 204(a-f of second friction steel disc circumferential arrangement), the temperature sensor 205(a-f of the 3rd friction steel disc circumferential arrangement), the temperature sensor 206(a-f of the 4th friction steel disc circumferential arrangement), axle pressure sensor 318 is by signal conditioning circuit 423, terminal box 420, multi-function data acquisition card 415 is adopted into real-time controller 414; Variable-frequency motor 101 is mutual with real-time controller 414 generation information and steering order by frequency converter 421, com port 416; Real-time controller 414 carries out pressure control by AO and DIO card 419, terminal box 420, amplifier 425 drive controlling proportion magnetic valves 16, and fuel tank heater 24 and cooling water valve 34 carry out oily temperature control, and electromagnetic clutch 103 carries out the switching controls of transmission of power.
Adopt multi-disc wet clutch friction steel disc temperature detection scheme of the present invention, by the inertia combination of frequency control, inertial flywheel, the control of clutch lubrication oil temperature, test condition that can setpoint clutch, can realize the switching of power apace by electromagnetic clutch, arrange temperature sensor by circumferential and axial, can be under the various dry run operating modes, to the multi-disc wet clutch friction circumferentially and axial Temperature Distribution test, for clutch designing and control lay the foundation.The present invention program is simple, and is with low cost, can simulate the operating condition of multi-disc wet clutch, easy to implement.
Above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (6)
1. multi-disc wet clutch friction steel disc temperature detection test unit, it comprises power drive mechanism, test mechanism, hydraulic system and control system; It is characterized in that,
The output of described power drive mechanism is connected with the chamber input shaft (108) of test mechanism, and at the front end of chamber input shaft (108) torque and speed sensors (107) is set;
Friction disc to be tried (201) and test friction steel disc (202) are equipped with in the chamber inside of described test mechanism; Chamber input shaft (108) and friction disc to be tried (201) link, and the casing of chamber links with test friction steel disc (202), and test casing (109) is connected with the force transducer of fixing (111) by the braking arm of force (110) that connects firmly; Friction disc to be tried (201) front end is provided with hydraulic pressurization mechanism on chamber input shaft (108), be provided with axle pressure sensor (318) at test friction steel disc (202) end, action of hydraulic force is in friction disc to be tried (201), and is delivered to axle pressure sensor (318); Circumferentially evenly be furnished with temperature sensor at each sheet test friction steel disc (202); Chamber is provided with oil pressure inlet tube joint (308), it inwardly is communicated with hydraulic pressurization mechanism, outwards connect hydraulic system, cutting oil oil-in pipe adapter (322) and cutting oil oil-out pipe adapter (324) are set respectively in chamber, their inside connection test friction steel disc (202) and friction discs to be tried (201) outwards connect hydraulic system respectively;
Described control system is connected with power drive mechanism and above-mentioned various sensor respectively with signal wire by control line.
2. multi-disc wet clutch friction steel disc temperature detection test unit according to claim 1, it is characterized in that: the hydraulic pressurization mechanism of described test mechanism comprises the axis of the piston (305), piston (310), axial dimension adjustment ring (316), axial force force transmission ring (317), butterfly spring (325), spring washer (326), hexagon socket head cap screw (327) and gland (328);
Described test mechanism constitutes the test cavity of relative closure jointly by test casing (109), the axis of the piston (305), end cap (304) and test case lid (314), and seals; Test casing (109) one ends connect the axis of the piston (305), the axis of the piston (305) is supported on the chamber input shaft (108) by angular contact ball bearing (303), the other end of test casing (109) is connected with test case lid (314), test case lid (314) is supported on the chamber input shaft (108) by angular contact ball bearing (320), and angular contact ball bearing (303 and 320) carries out axial location by circlip (302), elastic shaft back-up ring (321), end cap (304), test case lid (314); Piston (310) is supported on the axis of the piston (305), and seals; Axial locking nut (323), gland (328), butterfly spring (325), friction disc installation wheel hub (319) are installed on piston (310) one end chamber input shafts (108) successively, axial locking nut (323) is installed wheel hub (319) axial location with gland (328), butterfly spring (325), friction disc, under the effect of butterfly spring (325), gland (328), push piston (310) to the left side; Friction disc is installed wheel hub (319) and is contained on the chamber input shaft (108) by spline, and friction disc to be tried (201) is connected friction disc and installs on the wheel hub (319); The outer hub (315) of clutch coupling is fixed on the test casing (109), and test friction steel disc (202) is installed on the outer hub (315) of clutch coupling; Test friction steel disc (202) and friction disc to be tried (201) are fitted with axle pressure sensor (318) by axial dimension adjustment ring (316), axial force force transmission ring (317);
Oil pressure inlet tube joint (308) in the chamber is communicated with the space of piston (310) front end of hydraulic pressurization mechanism;
Described axle pressure sensor (318) is by the signal wire connection control system.
3. multi-disc wet clutch friction steel disc temperature detection test unit according to claim 1 and 2, it is characterized in that: described power drive mechanism comprises variable-frequency motor (101), electromagnetic clutch (103), moment of inertia flywheel group (105) and rotating speed and torque sensor (107); Wherein variable-frequency motor (101) links with electromagnetic clutch, and electromagnetic clutch (103) links to each other with moment of inertia flywheel group (105), and inertial flywheel group (105) links to each other with chamber input shaft (108) by torque and speed sensors (107).
4. multi-disc wet clutch friction steel disc temperature detection test unit according to claim 3, it is characterized in that: described hydraulic system comprises oil pump oil-out oil circuit (1), safety overflow valve oil circuit (2), proportioning valve pressure control oil circuit (3), accumulator oil circuit (4), multi-disc wet clutch pressure oil circuit (5), multi-disc wet clutch lubricating oil return road (6), tensimeter (7), multi-disc wet clutch lubricant passage way (8), oil pump inlet port oil circuit (9), oil pump oil return line (10), proportion magnetic valve (16), safety overflow valve (17), flow speed control valve (18), oil pressure pressure transducer (19), insulation oil tank (23), butterfly valve (25), oil suction filtrator (26), heatproof gear-type pump (27), fine filter (28), Oil pump electrical machinery (30), accumulator stop valve (37), accumulator (38), flowmeter (39) and Oil pump electrical machinery shaft coupling 50;
Described insulation oil tank (23) connects heatproof gear-type pump (27) by oil pump inlet port oil circuit (9); Described Oil pump electrical machinery (30) connects driving heatproof gear-type pump (27) by Oil pump electrical machinery shaft coupling (50), oil in the insulation oil tank (23) is passed through oil pump inlet port oil circuit (9), butterfly valve (25), oil suction filtrator (26) sucks heatproof gear-type pump (27); The outlet termination oil pump oil-out oil circuit (1) of described heatproof gear-type pump (27), and on oil circuit, connect tensimeter (7a), fine filter (28) and oil pressure pressure transducer (19), and, be divided into safety overflow valve oil circuit (2), proportioning valve pressure control oil circuit (3), accumulator oil circuit (4) and multi-disc wet clutch pressure oil circuit (5) by behind the oil pump oil-out oil circuit (1); Be serially connected with safety overflow valve (17) on the safety overflow valve oil circuit (2), and go up the proportion magnetic valve (16) that is connected in series with proportioning valve pressure control oil circuit (3) and converge, return insulation oil tank (23) by oil pump oil return line (10); Accumulator oil circuit (4) connects accumulator (38) by accumulator stop valve (37); Multi-disc wet clutch pressure oil circuit (5) directly is connected with the oil pressure inlet tube joint (308) of chamber, multi-disc wet clutch pressure oil circuit (5) also is parallel with multi-disc wet clutch lubricant passage way (8), multi-disc wet clutch lubricant passage way (8) connects the cutting oil oil-in pipe adapter (322) of chamber by flow speed control valve (18), flowmeter (39), on multi-disc wet clutch lubricant passage way (8), also be connected to tensimeter (7b), oily temperature temperature sensor (33b); The oil return of chamber imports oil pump oil return line (10) by cutting oil oil-out pipe adapter (324) through multi-disc wet clutch lubricating oil return road (6), finally flow back to insulation oil tank (23).
5. multi-disc wet clutch friction steel disc temperature detection test unit according to claim 4, it is characterized in that: control system is divided into host computer (401), slave computer real-time controller (402), (403) three parts of input/output module, display (410) wherein, main frame (411) constitutes host computer (401) part; Slave computer real-time controller (402) mainly is made of DDR2 RAM (413), real-time controller (414), connects by netting twine (412) between host computer (401), the slave computer real-time controller (402); Multi-function data acquisition card (415), com port (416), AO and DIO card (419), terminal box (420), frequency converter (421), signal conditioning circuit (423) and amplifier (425) constitute input/output module (403); The signal of described each sensor is adopted into real-time controller (414) by signal conditioning circuit (423), terminal box (420), multi-function data acquisition card (415); Variable-frequency motor (101) is mutual with real-time controller (414) generation information and steering order by frequency converter (421), com port (416); Real-time controller (414) carries out pressure control by AO and DIO card (419), terminal box (420), amplifier (425) drive controlling proportion magnetic valve (16), drive controlling fuel tank heater (24) and cooling water valve (34) carry out oily temperature control, and drive controlling electromagnetic clutch (103) carries out the switching controls of transmission of power.
6. multi-disc wet clutch friction steel disc temperature detection test unit according to claim 5, it is characterized in that: be provided with liquid level gauge (22), air cleaner (31), level switch (32) in the described insulation oil tank (23), and the cooling cooling system that constitutes by tank cooler (21), cooling water valve (34), cooling water filter (35), by oil temperature temperature sensor (33a), the temperature elevation system that fuel tank heater (24) constitutes.
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| CN103955581A (en) * | 2014-05-05 | 2014-07-30 | 北京理工大学 | Optimal design method for rotary seal of vehicle wet clutch |
| CN103967963A (en) * | 2014-05-21 | 2014-08-06 | 合肥工业大学 | Method for measuring temperature of DCT wet clutches on basis of neural network prediction |
| CN104458465A (en) * | 2014-10-24 | 2015-03-25 | 西安顺通机电应用技术研究所 | Friction performance testing box for wet type friction element |
| CN105092245A (en) * | 2015-09-23 | 2015-11-25 | 中国人民解放军装甲兵技术学院 | Wet type friction plate testing device and testing method thereof |
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