CN105547696B - Motor front-end wheel system test equipment - Google Patents

Abstract

The invention discloses a kind of motor front-end wheel system test equipments, including testboard；The testboard includes pedestal (8)；The testboard further includes multiple belt wheel mounting brackets, and each belt wheel mounting bracket is independently mounted at according to the specific distributing position of motor front-end wheel system on pedestal (8)；Each belt wheel mounting bracket corresponds to the load belt wheel in one motor front-end wheel system of installation；Each load belt wheel is connected with corresponding one load.After this structure, motor front-end wheel system influences each other in test, and small, simple installation, test data authenticity are high and test data is reliable.

Description

Engine front wheel train test equipment

technical field

The invention relates to the field of engine testing, in particular to an engine front-end wheel train testing equipment.

Background technique

The engine front-end gear train test equipment is mainly used in the design verification of the front-end gear train system. The engine front-end wheel train test equipment generally includes a power supply unit that provides power, a test bench and a measurement and control device.

The engine front-end gear train includes automatic tensioner, load pulley and idler pulley. On the website of the State Intellectual Property Office, a comprehensive simulation experiment system for engine front-end gear trains with a publication number of CN 102494896A is disclosed. The structure of this system has the following characteristics: 1. Each pulley is installed on the same fixed panel through the pulley shaft, and It is connected by a belt; 2. A power simulator is connected behind the load pulley, and the power simulator is used to simulate the load of the pulley; 3. The data acquisition system of the test bench and the pulley are installed on the same fixed panel. But there are following deficiencies in this installation method: 1) the gear trains are all installed on a fixed panel, and the gear trains will vibrate during the test, and this vibration will be transmitted through the fixed panel to make each load pulley interact with each other and affect the measurement data. Accuracy; 2) If the position of the wheel train changes, the detection equipment connected to the rear end of the wheel train must be rearranged, resulting in complicated installation; 3) Use a power simulator to simulate the load of the load pulley, due to the moment of inertia of the power simulator 4) The load pulley vibrates during detection, and the data acquisition system and the load pulley are installed on the same fixed panel, and the fixed panel also Vibration will be generated, and the data acquisition system will then vibrate, which will affect the data acquisition system and affect the reliability of the test data.

Contents of the invention

The technical problem to be solved by the present invention is to provide an engine front-end wheel train testing equipment which has little mutual influence during testing, is easy to install, and has high authenticity and reliability of test data.

In order to solve the above technical problems, the engine front wheel train testing equipment of the present invention includes a test bench; the test bench includes a base; the test bench also includes a plurality of pulley mounting brackets, each pulley mounting bracket The specific distribution position of the train is independently installed on the base; each pulley mounting bracket is correspondingly installed with a load pulley in the engine front end train; each load pulley is connected with a corresponding load.

The front-end gear train of the engine includes an idler wheel; the idler wheel is installed on one of the mounting brackets on which the load pulley is installed or on the base through an independent mounting bracket. Since the engine front-end wheel train test equipment mainly tests the performance of the load pulley, the installation of the idler on the mounting bracket with the load pulley has little influence on the test of the load pulley, so that the idler can be arranged according to actual needs; of course, take The idler is installed on the base through an independent mounting bracket. This structure can greatly reduce the impact of the vibration generated by the idler on the load pulley test during the operation of the equipment, and can also move the position more conveniently to meet the layout of different gear trains. testing needs.

The front-end wheel train of the engine includes an automatic tensioning wheel; the automatic tensioning wheel is installed on one of the mounting brackets on which the load pulley is installed or on the base through an independent mounting bracket. Since the front-end gear train test equipment of the engine mainly tests the performance of the load pulley, the installation of the automatic tensioner on the mounting bracket on which the load pulley is installed has little influence on the test of the load pulley, so that the automatic tensioner can be arranged according to actual needs ; Of course, adopting the structure that the automatic tensioner is installed on the base through an independent mounting bracket can greatly reduce the impact of the vibration generated by the automatic tensioner on the load pulley test when the equipment is running, and it can also be moved more conveniently location to meet the test requirements of different gear train layout locations.

The mounting bracket is provided with a pulley mounting structure; the pulley mounting structure is a bearing seat.

The installation bracket is also provided with a power torque detection device; the pulley of the engine front wheel train is rotatably connected to the pulley mounting structure and connected with the power torque detection device through a shaft.

The power torque detection device is a power torque sensor.

The load pulley includes air conditioner compressor pulley, generator pulley, cooling water pump pulley, power steering pump pulley and crankshaft pulley; the load includes air conditioner compressor pulley load, generator pulley load, cooling Water pump pulley load, power steering pump pulley load and crankshaft pulley load.

A data acquisition system for collecting belt performance data is also provided near the base and installed on the base through a bracket.

The data acquisition system includes a laser displacement sensor, an infrared thermometer and a sound level meter connected with the measurement and control equipment of the engine front wheel train.

The number of the laser displacement sensors is 2, wherein one vertical alignment belt is arranged between the crankshaft pulley and the air conditioner compressor pulley, and the other parallel alignment belt is arranged between the crankshaft pulley and the air conditioner compressor pulley; The number of the infrared thermometer is 1 and it is arranged above the pulley of the generator; the number of the sound level meter is 1 and it is arranged near the pulley of the air conditioner compressor. In this way, the laser displacement sensor, sound level meter, and infrared thermometer monitor the test site in real time, and transmit the measured data to the measurement and control station in real time. The measurement and control station stores the data, and the PC of the measurement and control station displays the data in real time. It is convenient for testers to obtain and analyze test data.

After adopting the above structure, compared with the prior art, the engine front wheel train testing equipment of the present invention has the following advantages: 1) the installation structure of each load pulley, the power torque testing device of the pulley are installed on a support, Each bracket is independently mounted on the base. On the one hand, this installation structure overcomes the interaction between the gear trains installed on a fixed panel and the vibration of the gear trains during the test, thereby ensuring the accuracy of the data during the gear train test; on the other hand, each The load pulley to be tested, the bracket, the pulley installation structure on the bracket, the power torque test device, and the corresponding load are designed as a module. When the position of the wheel train needs to be changed after the first wheel train arrangement is detected, only The requirement can be satisfied only by moving the corresponding bracket, which makes the installation and test convenient. 2) In the present invention, the data acquisition system is also independently installed on the base, which is separated from the base installed by the engine front wheel train, and the data acquisition system and the measured object are non-contact measurements, so that the data acquisition system will not follow the engine front wheel. The system vibrates together during the test, thus ensuring the reliability of the test data. 3) The real working condition load is used to provide the load to the load pulley, which can make the front end of the engine gear train closer to the actual working condition during the test, thus ensuring the authenticity of the test data. 4) The measurement and control device can control each load and dynamometer, adjust the size of the load, realize the measurement of variable load conditions, and measure the operating parameters of the engine front wheel train under different conditions.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the test equipment for the engine front end gear train of the present invention.

Fig. 2 is a schematic diagram of another perspective of the overall structure of the engine front wheel train testing equipment of the present invention.

Fig. 3 is a schematic structural view of the test bench in the engine front wheel train test equipment of the present invention.

Fig. 4 is a schematic structural view of the test bench in the engine front wheel train test equipment of the present invention.

Fig. 5 is a schematic diagram of the structure of the test bench with the first bracket and the second bracket hidden in the engine front wheel train testing equipment of the present invention.

Fig. 6 is a structural schematic diagram of the pulley load of the air-conditioning compressor in the engine front-end wheel train testing equipment of the present invention.

Fig. 7 is a schematic diagram of the structure of the cooling water pump pulley load in the engine front wheel train test equipment of the present invention.

Fig. 8 is a structural schematic diagram of the power steering pump pulley load in the engine front wheel train test equipment of the present invention.

in:

1. Air-conditioning compressor pulley; 2. Generator pulley; 3. Cooling water pump pulley; 4. Power steering pump pulley; 5. Crankshaft pulley; 6. Automatic tensioner; 7. Belt; 8. Base ;9, dynamometer; 10, motor; 11, gearbox; 12, power supply unit; 13, measurement and control device; 14, base;

101. The first bearing seat; 102. The first power torque sensor; 103. The first mounting bracket; 104. The air conditioner compressor; 105. The evaporator; 106. The expansion valve; 107. The liquid storage tank; 108. The condenser;

201, the second bearing seat; 202, the second power torque sensor; 203, the second mounting bracket; 204, the idler wheel; 205, the vehicle generator;

301, the third bearing seat; 302, the third power torque sensor; 303, the third mounting bracket; 304, the water pump; 305, the water tank; 306, the waterway switch; 307, the electric control throttle valve; 308, the water pressure gauge; 309 ,heat sink;

401, the fourth bearing seat; 402, the fourth power torque sensor; 403, the fourth mounting bracket; 404, the idler wheel; 405, the power steering pump; 406, the oil tank; 407, the first oil port; 408, the second oil port ; 409, the third oil port; 410, the first oil pipe; 411, the second oil pipe; 412, the first branch; 413, the second branch; 414, the third oil pipe; 415, the proportional relief valve; 416, the reversing valve ; 417, overflow valve; 418, pressure sensor; 419, switch valve; 420, oil pressure control module;

501, the fifth bearing seat; 502, the fifth power torque sensor; 503, the fifth mounting bracket;

701. Laser displacement sensor; 702. Infrared thermometer; 703. Sound level meter.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to accompanying drawing 1 to shown in accompanying drawing 8, the engine front-end wheel train test equipment of the present invention, comprises the power supply device 12 that is connected to each other by bus, is used to install the test stand and the measurement and control device 13 of engine front-end wheel train; The gear train includes an automatic tensioner 6 connected by a belt 7, an idler pulley and a plurality of load pulleys; Device; drive unit comprises gearbox 11 and motor 10 in the present embodiment; The output shaft of gearbox 11 is connected with crankshaft pulley after the output shaft of gearbox 11 is connected with crankshaft pulley 5; Described test stand also includes a plurality of pulleys Mounting brackets, each pulley mounting bracket is independently installed on the base 8 according to the specific distribution position of the engine front wheel train; each pulley mounting bracket is correspondingly installed with a load pulley; each load pulley is connected to a corresponding load connect.

The load pulleys in this embodiment include the air conditioner compressor pulley 1, the generator pulley 2, the cooling water pump pulley 3, the power steering pump pulley 4 and the crankshaft pulley 5; the number of idler pulleys is two.

The idler is installed on one of the mounting brackets on which the load pulley is installed or on the base 8 through an independent mounting bracket.

The automatic tensioner 6 is installed on one of the mounting brackets on which the load pulley is installed or on the base 8 through an independent mounting bracket.

The idler pulley and the automatic tensioner 6 can be installed simultaneously on the same mounting bracket with load pulleys or on the mounting brackets of different load pulleys. In this embodiment, the automatic tensioner 6 and one of the idler wheels are installed on the same support with a load pulley, and the other idler is installed on another support with a load pulley. Specifically, there are five pulley mounting brackets, namely the first mounting bracket 103 , the second mounting bracket 203 , the third mounting bracket 303 , the fourth mounting bracket 403 and the fifth mounting bracket 503 . Because the engine front-end wheel train testing equipment mainly tests the performance of the load pulley, so in the present embodiment, the support for installing the power steering pump pulley 4, that is, the fourth mounting bracket 403, is also equipped with an idler 404 and an automatic tensioner 6 . An idler wheel 204 is also installed on the support for installing the generator pulley 2 , that is, the second installation support 203 .

The mounting bracket is provided with a pulley mounting structure; the pulley mounting structure is a bearing seat. The installation bracket is also provided with a power torque detection device; the pulley of the engine front wheel train is rotatably connected to the pulley mounting structure and connected with the power torque detection device through a shaft.

In this embodiment, there are a first bearing seat 101 , a second bearing seat 201 , a third bearing seat 301 , a fourth bearing seat 401 and a fifth bearing seat 501 , which are installed on respective supports. The number of power torque sensors is 5, which are respectively the first power torque sensor 102, the second power torque sensor 202, the third power torque sensor 302, the fourth power torque sensor 402 and the fifth power torque sensor 502, which are respectively installed on each bracket superior.

The load of the pulley of the air conditioner compressor includes an air conditioner compressor 104, an evaporator 105, an expansion valve 106, a liquid storage tank 107 and a condenser 108 connected in turn to form a circuit through pipelines; the rotating shaft of the air conditioner compressor 104 is connected with the The first power torque sensor 102 behind the pulley 1 of the air conditioner compressor is connected. In this way, each component in the load of the air conditioner compressor pulley is a component used under real working conditions, which can ensure that the load provided to the pulley of the air conditioner compressor is close to the real working condition and the authenticity of the test data.

The generator pulley load is a vehicle-mounted generator 205; the rotating shaft of the vehicle-mounted generator 205 is connected with the second power torque sensor 202 behind the generator pulley 2 through a shaft coupling; like this, the vehicle-mounted generator can give the generator pulley The load provided is close to the real working situation, ensuring the authenticity of the test data.

The crankshaft pulley load includes a dynamometer 9, and the dynamometer 9 is connected with the crankshaft pulley through a shaft coupling.

The cooling water pump pulley load includes a water pump 304, a water tank 305, a cooling module and a water flow control module; the rotating shaft of the water pump 304 is connected with the third power torque sensor 302 behind the cooling water pump pulley 3 through a coupling; the water outlet of the water tank 305 Through the water pipe in turn, the water circuit switch 306, the water pump 304, the water flow control module, and the cooling module form a loop connection with the water inlet of the water tank 305; the water flow control module includes an electronically controlled throttle valve 307 and a water pressure gauge 308 connected to the water pipe ; The cooling module includes a radiator 309 . In this way, each component in the load system of the cooling water pump pulley is a component used under real working conditions, which can ensure that the load provided to the cooling water pump pulley is close to the real working condition and ensure the authenticity of the test data; in addition, the electric control throttling The valve is connected with the measurement and control device 13, which can adjust and control the water pressure in the cooling water pump pulley load system, so as to ensure that the test meets the actual requirements.

The power steering pump pulley load includes a power steering pump 405, an oil tank 406 and an oil pressure control module 420; The power steering pump 405 has three oil ports, namely the first oil port 407, the second oil port 408 and the third oil port 409; the oil outlet of the fuel tank 406 is connected to the first oil port 407 through the first oil pipe 410 , the oil inlet of the oil tank 406 is connected with a second oil pipe 411, and the second oil pipe 411 has a first branch 412 connected with the second oil port 408 and a second branch 413 connected with one end of the oil pressure control module 420; The other end of the control module 420 is connected to the third oil port 409 through the third oil pipe 414; the oil pressure control module 420 includes a proportional relief valve 415 and a reversing valve 416 connected to the third oil pipe 414 and the second branch 413 , a relief valve 417 and a pressure sensor 418; an on-off valve 419 is also provided on the first oil pipe 410 . In this way, each component in the load system of the power steering pump pulley is a component used under real working conditions, which can ensure that the load provided to the pulley of the power steering pump is close to the real working condition and ensure the authenticity of the test data; in addition, the proportional overflow The flow valve is connected with the measurement and control device 13, which can regulate and control the oil pressure in the power steering pump pulley load system, so as to ensure that the test meets the actual requirements.

A data acquisition system for collecting performance data of the belt 7 is also provided near the base and installed on the base 14 through a bracket.

The data acquisition system includes a laser displacement sensor 701 , an infrared thermometer 702 and a sound level meter 703 connected to the measurement and control system 13 .

The number of the laser displacement sensors 701 is 2, one of which is vertically aligned with the belt 7 and arranged between the crankshaft pulley 5 and the air conditioner compressor pulley 1, and the other parallel alignment belt 7 is arranged between the crankshaft pulley 5 and the air conditioner compressor. Between the pulleys 1; the number of the infrared thermometer 702 is 1 and is located above the generator pulley 2; the number of the sound level meter 703 is 1 and is close to the pulley 1 of the air conditioner compressor set up.

When the engine front wheel train is tested, earlier each pulley of the engine front wheel train is installed on each bracket, and is installed on the base 8 according to the actual position on the engine, and the switch of the power supply unit 12 is opened to give the test stand Power supply, each power torque sensor, laser displacement sensor 701, sound level meter 703, and infrared thermometer 702 monitor the test site in real time, and transmit the measured data to the measurement and control device 13 in real time. The measurement and control device stores the 13 data, and the measurement and control The PC on the platform displays the data in real time.

The present invention is not limited to the structures described above, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (9)

1. a kind of motor front-end wheel system test equipment, including testboard；The testboard includes pedestal (8)；It is characterized in that： The testboard further includes multiple belt wheel mounting brackets, and each belt wheel mounting bracket is according to the specific distribution of motor front-end wheel system Position is independently mounted on pedestal (8)；Each belt wheel mounting bracket corresponds to the load-strap in one motor front-end wheel system of installation Wheel；Each load belt wheel is connected with corresponding one load；The load belt wheel includes air conditioner compressor belt pulley (1), hair Electrical machine belt pulley (2), cooling water pump belt wheel (3), power steering pump belt wheel (4) and crankshaft pulley (5)；The load includes air-conditioning pressure The load of contracting machine belt wheel, the load of generator belt wheel, the load of cooling water pump belt wheel, the load of power steering pump belt wheel and crankshaft pulley are negative It carries；The air conditioner compressor belt pulley load includes compressor of air conditioner (104), the evaporator that circuit is in turn connected to form by pipeline (105), expansion valve (106), fluid reservoir (107) and condenser (108)；The shaft of compressor of air conditioner (104) by shaft coupling with The first power torque sensor (102) connection after air conditioner compressor belt pulley (1)；The generator belt wheel load is vehicle-mounted power generation Machine (205)；The shaft of mobile generator (205) passes through the second power torque sensor after shaft coupling and generator belt wheel (2) (202) it connects；The cooling water pump belt wheel load includes water pump (304), water tank (305), refrigerating module and flow cavitation result module； The shaft of water pump (304) is connect by shaft coupling with the third power torque sensor (302) after cooling water pump belt wheel (3)；Water After the water outlet of case (305) passes sequentially through water pipe and water route switch (306), water pump (304), flow cavitation result module, refrigerating module It is formed into a loop and connects with the water inlet of water tank (305)；The flow cavitation result module includes the automatically controlled throttle valve being connected on water pipe (307) and water pressure gauge (308)；The refrigerating module includes radiator (309)；The power steering pump belt wheel load includes turning To boost pump (405), fuel tank (406) and hydraulic control module (420)；The shaft of the power assistance pump for steering (405) passes through shaft coupling Device is connect with the 4th power torque sensor (402) after power steering pump belt wheel (4), and there are three power assistance pump for steering (405) tools Hydraulic fluid port, respectively the first hydraulic fluid port (407), the second hydraulic fluid port (408) and third hydraulic fluid port (409)；The oil outlet of fuel tank (406) passes through One oil pipe (410) is connect with the first hydraulic fluid port (407), and the oil inlet of fuel tank (406) is connected with the second oil pipe (411), and described second Oil pipe (411) has the first branch (412) being connect with the second hydraulic fluid port (408) and is connect with hydraulic control module (420) one end The second branch (413)；The other end of hydraulic control module (420) is connected by third oil pipe (414) and third hydraulic fluid port (409) It connects；The hydraulic control module (420) includes the proportional pressure control valve being connected on third oil pipe (414) and the second branch (413) (415), reversal valve (416), overflow valve (417) and pressure sensor (418)；It is additionally provided with switch on first oil pipe (410) Valve (419).

2. motor front-end wheel system test equipment according to claim 1, it is characterised in that：The motor front-end wheel system Including idle pulley；One installed therein of the idle pulley is equipped in the mounting bracket of load belt wheel or by independent mounting bracket On pedestal (8).

3. motor front-end wheel system test equipment according to claim 1, it is characterised in that：The motor front-end wheel system Including automatic tensioner (6)；One installed therein of the automatic tensioner (6) be equipped with load belt wheel mounting bracket on or It is mounted on pedestal (8) by independent mounting bracket.

4. motor front-end wheel system test equipment according to claim 1, it is characterised in that：The mounting bracket is equipped with Belt wheel mounting structure；The belt wheel mounting structure is bearing block.

5. motor front-end wheel system test equipment according to claim 4, it is characterised in that：It is also set in the mounting bracket There is power torque detecting apparatus；The belt wheel of motor front-end wheel system is rotatably connected on belt wheel mounting structure and by axis and power Torque detecting apparatus connects.

6. motor front-end wheel system test equipment according to claim 5, it is characterised in that：The power torque detection dress It is set to power torque sensor.

7. motor front-end wheel system test equipment according to claim 1, it is characterised in that：It is additionally provided with close to base position logical Cross data collecting system of the holder for acquiring belt (7) performance data on pedestal (14).

8. motor front-end wheel system test equipment according to claim 7, it is characterised in that：The data collecting system packet It includes and connect laser displacement sensor (701), infrared temperature instrument (702) and sound level with the measure and control device of motor front-end wheel system (13) It counts (703).

9. motor front-end wheel system test equipment according to claim 8, it is characterised in that：The laser displacement sensor (701) quantity is 2, one of perpendicular alignmnet belt (7) be set to crankshaft pulley (5) and air conditioner compressor belt pulley (1) it Between, another parallel alignment belt (7) is set between crankshaft pulley (5) and air conditioner compressor belt pulley (1)；The infrared measurement of temperature It is 1 and the setting above the generator belt wheel (2) to count (702) quantity；Sound level meter (703) quantity is 1 and leans on Nearly air conditioner compressor belt pulley (1) setting.