CN201757710U - Endurance testing device for traveling mechanism - Google Patents
Endurance testing device for traveling mechanism Download PDFInfo
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- CN201757710U CN201757710U CN2010202482114U CN201020248211U CN201757710U CN 201757710 U CN201757710 U CN 201757710U CN 2010202482114 U CN2010202482114 U CN 2010202482114U CN 201020248211 U CN201020248211 U CN 201020248211U CN 201757710 U CN201757710 U CN 201757710U
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- directional control
- solenoid directional
- travel mechanism
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Abstract
An endurance testing apparatus for a traveling mechanism belongs to an endurance testing device for hydraulic elements. The testing device is characterized in that a power hydraulic system loop controls a driving traveling mechanism; a driven traveling mechanism is connected with a loading hydraulic system loop; a brake hydraulic system loop controls the brake of the driving traveling mechanism and that of the driven traveling mechanism to be opened and closed; and a leakage test loop tests the leakage amount of a motor of the driving traveling mechanism and that of the driven traveling mechanism. The endurance testing device has the advantages that the power hydraulic system loop controls the traveling mechanisms to rotate alternately in either direction through four electromagnetic directional valves; the loading hydraulic system loop enables a loading valve of the driven traveling mechanism to load through a bridge-type loop of four one-way valves; a hydraulic pump adopts an electro-hydraulic proportional pressure and flow control valve, and the loading valve and a back pressure regulating valve adopt electro-hydraulic proportional overflow valves which can be controlled through a computer conveniently; and the computer collects data of pressure sensors and flow sensors, and the data is drawn as curves to be displayed on the screen of the computer visually.
Description
Technical field
The utility model relates to a kind of durability test device of Hydraulic Elements, particularly a kind of travel mechanism durability test device.
Background technology
Crawler-type traveling is one of main walking manner of engineering machinery, all is crawler-type traveling as walkings such as excavator, crawler cranes.Crawler-type traveling mainly is to drive track-type by travel mechanism, and its performance is determining track-type performance and reliability.The present domestic durability test device that does not also have travel mechanism.
The utility model content
The purpose of this utility model is to provide a kind of: can realize the forward and reverse running of travel mechanism automatically, can freely set the positive and negative duration of runs, the travel mechanism durability test device that load can be regulated arbitrarily continuously.
The objective of the invention is to provide a kind of: this test unit comprises dynamicliquid pressure system circuit, loading hydraulic system circuit, braking hydraulic system circuit, leak-testing loop.The control of dynamicliquid pressure system circuit is travel mechanism initiatively; Passive travel mechanism is connected with loading hydraulic system circuit; The opening and closing of the detent of braking hydraulic system circuit controls active travel mechanism and passive walking structure; The leakage rate of leak-testing loop-around test active travel mechanism and passive travel mechanism motor.
Described dynamicliquid pressure system circuit comprises: hydraulic pump, motor, safety valve, the first flow sensor, first retaining valve, first solenoid directional control valve, second solenoid directional control valve, the 3rd solenoid directional control valve, the 4th solenoid directional control valve and active running motor, motor output shaft is connected with the input shaft of hydraulic pump, the hydraulic pressure delivery side of pump also with by the first flow sensor is connected with first retaining valve simultaneously by the safety valve connected tank, the first retaining valve output terminal is connected with second solenoid directional control valve with first solenoid directional control valve simultaneously, first solenoid directional control valve is connected with the active running motor with the 3rd solenoid directional control valve oil-in simultaneously, second solenoid directional control valve is connected with the active running motor with the oil-in of the 4th solenoid directional control valve simultaneously, the oil-out of the 3rd solenoid directional control valve and the 4th solenoid directional control valve oil-out connected tank, initiatively running motor is connected with the speed reduction unit of initiatively walking, and on the speed reduction unit of initiatively walking Thrustor is arranged.
Described loading hydraulic system circuit comprises: passive running motor, second retaining valve, the 3rd retaining valve, the 4th retaining valve, the 5th retaining valve, slippage pump, the 6th retaining valve, first filtrator, back pressure regulating valve, second filtrator, second flow sensor and charge valve, charge valve is connected with second filtrator by second flow sensor, second filtrator connects and is connected with an end of the 4th retaining valve and the 5th retaining valve simultaneously, the other end of the 4th retaining valve is connected with an end of second retaining valve and an end of passive running motor simultaneously, the other end of the 5th retaining valve is connected with an end of the 3rd retaining valve and the other end of passive running motor simultaneously, after the other end of second retaining valve and the 3rd retaining valve is connected, be connected between first filtrator and the back pressure regulating valve; Slippage pump, the 6th retaining valve, first filtrator and back pressure regulating valve are linked in sequence and constitute the loop, and passive running motor is connected with passive walking speed reduction unit, on by the walking speed reduction unit Thrustor are arranged.
Described braking hydraulic system circuit comprises: two-position four-way solenoid directional control valve and reduction valve, reduction valve is connected by the brake fluid cylinder pressure rod chamber of two-position four-way solenoid directional control valve with the Thrustor of active travel mechanism and passive travel mechanism.
Described leak-testing loop comprises: the 3rd filtrator and the 3rd flow sensor, initiatively the leakage of travel mechanism and passive travel mechanism oil is by the 3rd filtrator and the 3rd flow sensor oil-feed tank.
Beneficial effect, owing to adopted such scheme, the present invention utilizes travel mechanism test frock, walking speed reduction unit and the running motor formation travel mechanism that links together, two travel mechanisms are tested simultaneously, initiatively running motor drives initiatively driving speed reducer of walking, and the active driving speed reducer drives passive travel mechanism by coupling shaft and rotates, and passive driving speed reducer loads by passive running motor.
Initiatively the dynamicliquid pressure system circuit of travel mechanism is by the hydraulic pump fuel feeding, according to test needs control delivery rate and top pressure.Control loop is made up of four solenoid valves, when first solenoid valve, the energising of the 4th solenoid valve, and second solenoid valve, the outage of the 3rd solenoid valve, the detent of driving speed reducer is opened in solenoid valve energising simultaneously, and running motor drives driving speed reducer and rotates; When second solenoid valve, the energising of the 3rd solenoid valve, first solenoid valve, the outage of the 4th solenoid valve, the active running motor drives passive walking speed reduction unit and rotates to other direction, realizes the motion of the positive and negative both direction of driving speed reducers by controlling these electromagnetic valve switch.
Passive travel mechanism loads hydraulic circuit and is made up of jointly second retaining valve, the 3rd retaining valve, the 4th retaining valve, the 5th retaining valve, the 3rd filtrator, back pressure regulating valve, charge valve and slippage pump; Wherein four second retaining valves, the 3rd retaining valve, the 4th retaining valve, the 5th retaining valves are formed bridge type return, hydraulic fluid port of motor can be from the fuel tank oil suction when making passive driving speed reducer do the to-and-fro movement of positive and negative both direction under the drive of active running motor, a hydraulic fluid port loads by charge valve, and charge valve can be set needed on-load pressure as required.Slippage pump is when preventing that passive running motor from working, and when the flow of the hydraulic oil in the closed circuit can not satisfy the motion needs, replenishes enough hydraulic oil for the loop of passive driving speed reducer, is pressed variable valve to set oil compensation pressure.
The 3rd flow sensor can be measured the leakage rate of motor.Can realize the forward and reverse running of travel mechanism automatically, can freely set the positive and negative duration of runs, and load can be regulated arbitrarily continuously, reached purpose of the present invention.
Advantage: the switch control of dynamicliquid pressure system circuit by four solenoid directional control valves has realized alternately the rotatablely moving of positive and negative both direction of travel mechanism; The bridge type return that loading hydraulic system circuit is formed by four retaining valves makes one of two hydraulic fluid port on the motor on the passive travel mechanism from the fuel tank oil suction, and a hydraulic fluid port loads by charge valve; Hydraulic pump adopts the control of electric-hydraulic proportion pressure flow, and charge valve, back pressure regulating valve are that electricity liquid ratio relief valve can be controlled easily by computing machine; The data of each pressure transducer of computer acquisition and flow sensor also plot curve with these data and are presented on the computer screen intuitively.
Description of drawings
Fig. 1 is that the present invention tests hydraulic system principle figure.
Among the figure: 1, hydraulic pump; 2, motor; 3, safety valve; 4, first flow sensor; 5, first retaining valve; 6, first solenoid directional control valve; 7, second solenoid directional control valve; 8, the 3rd solenoid directional control valve; 9, the 4th solenoid directional control valve; 10, active running motor; 11, travel mechanism test frock; 12, passive running motor; 13, second retaining valve; 14, the 3rd retaining valve; 15, the 4th retaining valve; 16, the 5th retaining valve; 17, slippage pump; 18, the 6th retaining valve; 19, first filtrator; 20, back pressure regulating valve; 21, second filtrator; 22, second flow sensor; 23, charge valve; 24, the 3rd filtrator; 25, the 3rd flow sensor; 26, two-position four-way solenoid directional control valve; 27, reduction valve.
Embodiment
Embodiment 1: the travel mechanism durability test device is realized by the travel mechanism durability test device.This test unit comprises dynamicliquid pressure system circuit, loading hydraulic system circuit, braking hydraulic system circuit, leak-testing loop.The control of dynamicliquid pressure system circuit is travel mechanism initiatively; Passive travel mechanism is connected with loading hydraulic system circuit; The opening and closing of the detent of braking hydraulic system circuit controls active travel mechanism and passive walking structure; The leakage rate of leak-testing loop-around test active travel mechanism and passive travel mechanism motor.
Described dynamicliquid pressure system circuit comprises: hydraulic pump 1, motor 2, safety valve 3, first flow sensor 4, first retaining valve 5, first solenoid directional control valve 6, second solenoid directional control valve 7, the 3rd solenoid directional control valve 8, the 4th solenoid directional control valve 9 and active running motor 10, motor output shaft 2 is connected with the input shaft of hydraulic pump 1, and the hydraulic pressure delivery side of pump is by safety valve 3 connected tanks; Also with by first flow sensor 4 be connected simultaneously with first retaining valve, the first retaining valve output terminal is connected with second solenoid directional control valve 7 with first solenoid directional control valve 6 simultaneously, first solenoid directional control valve is connected with the active running motor with the 3rd solenoid directional control valve 8 oil-ins simultaneously, second solenoid directional control valve oil-in of the 4th solenoid directional control valve 9 simultaneously is connected with active running motor 10, the oil-out of the 3rd solenoid directional control valve 8 and the 4th solenoid directional control valve 9 oil-out connected tanks, initiatively running motor is connected with the speed reduction unit of initiatively walking, and on the speed reduction unit of initiatively walking Thrustor is arranged.Described first solenoid directional control valve, second solenoid directional control valve, the 3rd solenoid directional control valve and the 4th solenoid directional control valve are the bi-bit bi-pass solenoid directional control valve.
Described loading hydraulic system circuit comprises: passive running motor 12, second retaining valve 13, the 3rd retaining valve 14, the 4th retaining valve 15, the 5th retaining valve 16, slippage pump 17, the 6th retaining valve 18, first filtrator 19, back pressure regulating valve 20, second filtrator 21, second flow sensor 22 and charge valve 23, charge valve 23 is connected with second filtrator 21 by second flow sensor 22, second filtrator connects and is connected with the end of the 4th retaining valve 15 with the 5th retaining valve 16 simultaneously, the other end of the 4th retaining valve is connected with an end of second retaining valve 13 and an end of passive running motor 12 simultaneously, the other end of the 6th retaining valve 16 is connected with an end of the 3rd retaining valve 14 and the other end of passive running motor 12 simultaneously, after the other end of second retaining valve 13 and the 3rd retaining valve 14 is connected, be connected between first filtrator 19 and the back pressure regulating valve 20; Slippage pump 17, the 6th retaining valve 18, first filtrator 19 and back pressure regulating valve 20 are linked in sequence and constitute the loop, and passive running motor is connected with passive walking speed reduction unit, on by the walking speed reduction unit Thrustor are arranged.
Described braking hydraulic system circuit comprises: two-position four-way solenoid directional control valve 26 and reduction valve 27, reduction valve 27 is connected by the brake fluid cylinder pressure rod chamber of two-position four-way solenoid directional control valve 26 with the Thrustor of active travel mechanism and passive travel mechanism.
Described leak-testing loop comprises: the 3rd filtrator 24 and the 3rd flow sensor 25, initiatively the leakage of travel mechanism and passive travel mechanism oil is by the 3rd filtrator 24 and the 3rd flow sensor 25 oil-feed tanks.
Initiatively walk speed reduction unit and passive walking speed reduction unit are respectively charged into the two ends of travel mechanism test frock, the travel mechanism that is positioned at travel mechanism test frock and active running motor and the passive running motor formation travel mechanism that links together, two travel mechanisms are tested simultaneously, initiatively running motor drives initiatively driving speed reducer of walking, initiatively driving speed reducer drives passive travel mechanism rotation by coupling shaft, and passive driving speed reducer loads by passive running motor.
Active travel mechanism and passive travel mechanism are respectively charged into two mounting holes that travel mechanism is tested frock, be positioned at the driving speed reducer of travel mechanism test frock and the running motor formation travel mechanism that links together, two travel mechanisms are tested simultaneously, a walking speed reduction unit is driven by the active running motor, driving speed reducer drives passive driving speed reducer by coupling shaft, loads by passive running motor.
Control loop is made up of first solenoid directional control valve 6, second solenoid directional control valve 7, the 3rd solenoid directional control valve 8 and 9 four solenoid valves of the 4th solenoid directional control valve, when first solenoid directional control valve 6 and electric four solenoid directional control valves, 9 energisings, second solenoid directional control valve 7 and the 3rd electromagnetism change a few valve 8 outages, the pressure oil of hydraulic pump output enters initiatively running motor by flow sensor 4, first retaining valve 5, first solenoid directional control valve 6, and initiatively the running motor oil return is by the 4th solenoid directional control valve 9 oil sump tanks; Two-position four-way solenoid directional control valve 26 energisings simultaneously, hydraulic oil is by reduction valve 27, two-position four-way solenoid directional control valve 26 is opened the detent on the reductor of initiatively running motor and passive running motor, the active running motor drives the speed reduction unit of initiatively walking and clockwise rotates, the active driving speed reducer drives passive walking speed reduction unit by coupling shaft and rotates counterclockwise, passive driving speed reducer drives passive running motor and rotates, this moment, passive motor operations was in the pump operating mode, fuel-displaced the 5th retaining valve 16 that passes through of passive running motor, second filtrator 21, second flow sensor 22, charge valve 23 oil sump tanks, slippage pump 17 is by the 6th retaining valve 18, first filtrator 19, second retaining valve 13 is to passive running motor import fuel feeding, and back pressure regulating valve 20 is adjusted the oil compensation pressure of slippage pump.
When second solenoid directional control valve 7 and 8 energisings of the 3rd solenoid directional control valve, first solenoid directional control valve 6 and 9 outages of the 4th solenoid directional control valve, hydraulic pump pressure oil enters initiatively running motor by first flow sensor 4, first retaining valve 5, second solenoid directional control valve 7, and initiatively the running motor oil return is by the 3rd solenoid directional control valve 8 oil sump tanks; Initiatively running motor drive active driving speed reducer rotates counterclockwise, the active driving speed reducer drives passive walking speed reduction unit by coupling shaft and rotates counterclockwise, passive walking speed reduction unit drives passive running motor and rotates, this moment, passive running motor was operated in the pump operating mode, fuel-displaced the 4th retaining valve 15 that passes through of passive running motor, second filtrator 21, second flow sensor 22, charge valve 23 oil sump tanks, slippage pump 17 is by the 6th retaining valve 18, first filtrator 19, the 3rd retaining valve 14 is to passive running motor 12 import fuel feeding, and back pressure regulating valve 20 is adjusted the oil compensation pressure of slippage pump 17.
The 3rd flow sensor 25 is measured the leakage rate of motor.
Claims (5)
1. travel mechanism durability test device, it is characterized in that: this test unit comprises dynamicliquid pressure system circuit, loading hydraulic system circuit, braking hydraulic system circuit, leak-testing loop, the control of dynamicliquid pressure system circuit is travel mechanism initiatively; Passive travel mechanism is connected with loading hydraulic system circuit; The opening and closing of the detent of braking hydraulic system circuit controls active travel mechanism and passive walking structure; The leakage rate of leak-testing loop-around test active travel mechanism and passive travel mechanism motor.
2. travel mechanism durability test device according to claim 1, it is characterized in that: described dynamicliquid pressure system circuit comprises: hydraulic pump, motor, safety valve, the first flow sensor, first retaining valve, first solenoid directional control valve, second solenoid directional control valve, the 3rd solenoid directional control valve, the 4th solenoid directional control valve and active running motor, motor output shaft is connected with the input shaft of hydraulic pump, the hydraulic pressure delivery side of pump also with by the first flow sensor is connected with first retaining valve simultaneously by the safety valve connected tank, the first retaining valve output terminal is connected with second solenoid directional control valve with first solenoid directional control valve simultaneously, first solenoid directional control valve is connected with the active running motor with the 3rd solenoid directional control valve oil-in simultaneously, second solenoid directional control valve is connected with the active running motor with the oil-in of the 4th solenoid directional control valve simultaneously, the oil-out of the 3rd solenoid directional control valve and the 4th solenoid directional control valve oil-out connected tank, initiatively running motor is connected with the speed reduction unit of initiatively walking, and on the speed reduction unit of initiatively walking Thrustor is arranged.
3. travel mechanism durability test device according to claim 1, it is characterized in that: described loading hydraulic system circuit comprises: passive running motor, second retaining valve, the 3rd retaining valve, the 4th retaining valve, the 5th retaining valve, slippage pump, the 6th retaining valve, first filtrator, back pressure regulating valve, second filtrator, second flow sensor and charge valve, charge valve is connected with second filtrator by second flow sensor, second filtrator connects and is connected with an end of the 4th retaining valve and the 5th retaining valve simultaneously, the other end of the 4th retaining valve is connected with an end of second retaining valve and an end of passive running motor simultaneously, the other end of the 5th retaining valve is connected with an end of the 3rd retaining valve and the other end of passive running motor simultaneously, after the other end of second retaining valve and the 3rd retaining valve is connected, be connected between first filtrator and the back pressure regulating valve; Slippage pump, the 6th retaining valve, first filtrator and back pressure regulating valve are linked in sequence and constitute the loop, and passive running motor is connected with passive walking speed reduction unit, on by the walking speed reduction unit Thrustor are arranged.
4. travel mechanism durability test device according to claim 1, it is characterized in that: described braking hydraulic system circuit comprises: two-position four-way solenoid directional control valve and reduction valve, reduction valve is connected by the brake fluid cylinder pressure rod chamber of two-position four-way solenoid directional control valve with the Thrustor of active travel mechanism and passive travel mechanism.
5. travel mechanism durability test device according to claim 1, it is characterized in that: described leak-testing loop comprises: the 3rd filtrator and the 3rd flow sensor, initiatively the leakage of travel mechanism and passive travel mechanism oil is by the 3rd filtrator and the 3rd flow sensor oil-feed tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202482114U CN201757710U (en) | 2010-06-29 | 2010-06-29 | Endurance testing device for traveling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202482114U CN201757710U (en) | 2010-06-29 | 2010-06-29 | Endurance testing device for traveling mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN201757710U true CN201757710U (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202482114U Expired - Fee Related CN201757710U (en) | 2010-06-29 | 2010-06-29 | Endurance testing device for traveling mechanism |
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| Country | Link |
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| CN (1) | CN201757710U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334053A (en) * | 2015-11-05 | 2016-02-17 | 徐州重型机械有限公司 | Walking speed reducer brake test device and method |
| CN106335490A (en) * | 2016-09-26 | 2017-01-18 | 北京新能源汽车股份有限公司 | Method and device for dealing with brake fluid leakage of battery electric vehicle, as well as battery electric vehicle |
-
2010
- 2010-06-29 CN CN2010202482114U patent/CN201757710U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334053A (en) * | 2015-11-05 | 2016-02-17 | 徐州重型机械有限公司 | Walking speed reducer brake test device and method |
| CN106335490A (en) * | 2016-09-26 | 2017-01-18 | 北京新能源汽车股份有限公司 | Method and device for dealing with brake fluid leakage of battery electric vehicle, as well as battery electric vehicle |
| CN106335490B (en) * | 2016-09-26 | 2019-08-30 | 北京新能源汽车股份有限公司 | Brake fluid leakage processing method, device and the pure electric automobile of pure electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20160629 |
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| CF01 | Termination of patent right due to non-payment of annual fee |