CN208719035U - Hydraulic loaded test macro for cterpillar drive - Google Patents
Hydraulic loaded test macro for cterpillar drive Download PDFInfo
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- CN208719035U CN208719035U CN201820916948.5U CN201820916948U CN208719035U CN 208719035 U CN208719035 U CN 208719035U CN 201820916948 U CN201820916948 U CN 201820916948U CN 208719035 U CN208719035 U CN 208719035U
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- 239000010720 hydraulic oil Substances 0.000 description 1
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Abstract
The utility model discloses a kind of hydraulic loaded test macros for cterpillar drive, the system comprises: main control unit, repairing unit, stretching unit, cooling unit and external fuel tank, it is attached between the main control unit and the repairing unit by oil pipe, the repairing unit, stretching unit, cooling unit passes through oil pipe and connect with external fuel tank, it is poor by the pressure and oil pump capacity of the proportional pressure control valve control drive load motor in selection circuit, the displacement and pressure of crawler tensioning are adjusted by stretching unit, equipment installation period is reduced to reach, reduce manufacturing cost, improve the purpose of experiment control precision and system versatility.
Description
Technical field
The utility model relates to walking structure detection devices, and in particular to a kind of to add for the hydraulic of cterpillar drive
Carry test macro.
Background technique
In the prior art the detection device of walking structure mainly by hydraulic motor, driving speed reducer, shaft coupling, booster engine,
The input terminal of the composition such as dynamometer machine, driving speed reducer is connect with driving hydraulic motor, and output end is connected by booster engine, dynamometer machine
It connects, simulation carries out load test.Using test platform, electric eddy current dynamometer, booster engine and shaft coupling etc., connect with driving speed reducer
It connects and simulated resistance loads, the load of different type driving speed reducer, fatigue strength, transmission efficiency can be completed by test platform
Etc. performances test, provide test and test data parameter for the type selecting of driving speed reducer；But equipment investment fund is big, test
Rack includes the consoles such as the transmission parts such as dynamometer machine, speed increaser, shaft coupling, test platform, and Costco Wholesale is high；Axial connection compared with
Long, occupied space is big, poor universality, and especially cterpillar drive is currently that driving speed reducer is directly installed on engineering machine
Checkout facility is carried out on tool, the method test period is long, it is at high cost to run the big test run in place, and the power of loading section is big,
Energy consumption is high, and energy can not recycle.
Utility model content
In order to solve the above technical problems, the utility model proposes a kind of hydraulic loaded surveys for cterpillar drive
Test system reduces equipment installation period, reduction manufacturing cost, raising experiment control precision and system versatility, maximum to reach
The purpose of limit reduction plant capacity and energy loss.
In order to achieve the above objectives, the technical solution of the utility model is as follows: a kind of for the hydraulic of cterpillar drive
Load test system, the system comprises: main control unit, repairing unit, stretching unit, cooling unit and external fuel tank, institute
It states and is attached between main control unit and the repairing unit by oil pipe, the repairing unit, stretching unit, cooling unit
It is connect by oil pipe with external fuel tank,
The main control unit include: front-wheel drive load motor, rear wheel drive load motor, front-wheel control oil pump, after
Take turns control oil pump, front-wheel selection circuit, rear-wheel selection circuit and control motor, the front-wheel drive load motor and rear wheel drive
The output shaft of load motor is connected on the driving speed reducer of front-wheel and the driving speed reducer of rear-wheel, the front-wheel control oil
Pump loads motor with front-wheel drive by oil pipe and front-wheel selects circuit to connect, and the rear-wheel control oil pump passes through oil pipe and rear-wheel
Drive load motor is connected with rear-wheel selection circuit, and the front-wheel control oil pump is connected with the rear-wheel control oil pump axis, institute
It states front-wheel control oil pump and the rear-wheel control oil pump is connected on a control motor；
The repairing unit includes: repairing Oil pump electrical machinery group, the first pressure duct filter, the filtering of the second pressure duct
Device, the first safety valve and the second safety valve, the repairing Oil pump electrical machinery group are duplex vane oil pump motor group, the repairing oil pump
The inlet port of motor group is connect with external fuel tank, and the repairing Oil pump electrical machinery group is filtered with the first pressure duct respectively by oil pipe
Device and the second pressure duct filter connection, the first pressure duct filter by oil pipe respectively with front-wheel select circuit and
Rear-wheel select circuit connection, the second pressure duct filter by oil pipe respectively with front-wheel control oil pump and rear wheel liquefaction
First is provided on the oil pipe in pump connection, the first pressure duct filter connection front-wheel selection circuit and rear-wheel selection circuit
Branch's oil pipe is equipped with the first safety valve on first branch oil pipe, is provided with first pressure on first branch oil pipe
The second branch is provided on the oil pipe of table, the second pressure duct filter connection front-wheel control oil pump and rear-wheel control oil pump
Oil pipe is equipped with the second safety valve on second branch oil pipe, is provided with second pressure gauge on second branch oil pipe；
The stretching unit, for controlling the displacement and pressure of crawler tensioning；
The cooling unit, for the hot oil in cooling oil box.
Further, the front-wheel selection circuit and rear-wheel selection circuit include: multiple first check valve compositions
Bridge-type selection circuit, proportional pressure control valve and protecting against shock check valve, first check valve passes through oil pipe and the first pressure duct
Filter connection, the proportional pressure control valve select circuit and protecting against shock check valve to connect by pipeline with bridge-type.
Further, high-pressure flowmeter is provided on the pipeline of the main control unit.
Further, the front-wheel control oil pump and the rear-wheel control oil pump be high pressure cam-type axial piston pump and
Discharge capacity can be adjusted by electric scaling signal, the high pressure cam-type axial piston pump has accurate, reliable variable control mechanism,
Selection control mode is electric proportional control, and the high pressure axial plunger pump can clockwise/anticlockwise rotation.
Further, the stretching unit includes: and is tensioned Oil pump electrical machinery group, tensioning pressure regulator valve, tensioning pressure table, electromagnetism to change
To valve and tensioning hydro-cylinder, the inlet port of the tensioning Oil pump electrical machinery group is connect with external fuel tank, and the tensioning Oil pump electrical machinery group is logical
It crosses oil pipe to connect with solenoid directional control valve, the solenoid directional control valve is connect by oil pipe with tensioning hydro-cylinder, and the tensioning hydro-cylinder is used for
The tensioning of crawler belt is controlled, is provided with branch oil pipe, the branch on the oil pipe of the tensioning Oil pump electrical machinery group connection solenoid directional control valve
The both ends of road binders pipe are respectively arranged with tensioning pressure regulator valve and tensioning pressure table.
Further, the oil pump in the tensioning Oil pump electrical machinery group is constant pressure variable plunger pump, the constant-pressure variable plunger
Pump can provide constant pressure oil source to clamping system.
Further, the cooling unit includes: cooling oil pump motor group, cooling pressure regulator valve, panel cooler and cooling
The inlet port of pressure gauge, the cooling oil pump motor group is connect with external fuel tank, the cooling oil pump motor group by oil pipe with
The oil outlet of panel cooler connection, the panel cooler is connect by oil pipe with external fuel tank, the cooling oil pump motor
It is provided with branch's oil pipe on oil pipe between group and panel cooler, is provided with cooling pressure regulator valve and cooling on branch's oil pipe
Pressure gauge.
The utility model has the advantages that
(1) the utility model adjusts the displacement and pressure of crawler tensioning by stretching unit, is applicable to hydraulic system
The driving speed reducer of different type of machines.
(2) system of the utility model is energy closed-loop system, when front and back wheel driving speed reducer synchronous rotary in the same direction, control
The power of motor processed need to only overcome the fever and friction of system, be effectively reduced energy consumption.
(3) the utility model selects proportional pressure control valve and rear-wheel in circuit that the ratio in circuit is selected to overflow by front-wheel
Stream valve adjusts the pressure of front-wheel drive load motor and rear wheel drive load motor, and the row by adjusting front and back wheel oil pump respectively
The poor size to adjust load of amount, convenient test, control precision are high.
(4) it does not need for driving speed reducer to be mounted in engineering machinery when the utility model test driving speed reducer, test
Convenient, space occupied is small, and test period is short.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described.
Fig. 1 is that the disclosed hydraulic loaded test principle for cterpillar drive of the utility model embodiment is shown
It is intended to；
Number and corresponding component title represented by letter in figure:
1, main control unit；2, repairing unit；3, stretching unit；4, cooling unit；5, external fuel tank；6, tensioning pressure
Table；7, it is tensioned pressure regulator valve；8, solenoid directional control valve；9, tensioning hydro-cylinder；10, it is tensioned Oil pump electrical machinery group；11, repairing Oil pump electrical machinery group；
12, first pressure gauge；13, the first pressure duct filter；14, the second pressure duct filter；15, second pressure gauge；16,
Two safety valves；17, the first safety valve；18, front-wheel control oil pump；19, high-pressure flowmeter；20, front-wheel selects circuit；21, front-wheel
Drive load motor；22, the driving speed reducer of front-wheel；23, crawler belt；24, the driving speed reducer of rear-wheel；25, rear wheel drive loads
Motor；26, rear-wheel selects circuit；27, proportional pressure control valve；28, protecting against shock check valve；29, rear-wheel control oil pump；30, control electricity
Machine；31, cooling oil pump motor group；32, cooling pressure regulator valve；33, cooling pressure table；34, panel cooler.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
The utility model provides a kind of hydraulic loaded test macro for cterpillar drive, its working principle is that
The proportional pressure control valve selected in circuit by two controls the pressure difference of drive load motor, adjusts crawler belt by stretching unit
Tight displacement and pressure, it is general to reach reduction equipment installation period, reduction manufacturing cost, raising experiment control precision and system
The purpose of property.
The utility model is described in further detail below with reference to embodiment and specific embodiment.
As shown in Figure 1, a kind of hydraulic loaded test macro for cterpillar drive, the system comprises: master control
Unit 1, repairing unit 2, stretching unit 3, cooling unit 4 and external fuel tank processed, the main control unit 1 and the repairing unit
It is attached between 2 by oil pipe, the repairing unit 2, stretching unit 3, cooling unit 4 are connected by oil pipe and external fuel tank
It connects,
The main control unit 1 includes: front-wheel drive load motor 21, rear wheel drive load motor 25, front-wheel control oil
Pump 18, rear-wheel control oil pump 29, front-wheel selection circuit 20, rear-wheel selection circuit 26 and control motor 30, the front-wheel drive add
The output shaft of load motor 21 and rear wheel drive load motor 25 is connected to driving speed reducer 22 and the walking of rear-wheel of front-wheel
On speed reducer 24, the front-wheel control oil pump 18 loads motor 21 by oil pipe and front-wheel drive and front-wheel selects circuit 20 to connect
It connects, the rear-wheel control oil pump 29 loads motor 25 with rear wheel drive by oil pipe and rear-wheel selects circuit 26 to connect, before described
Wheel control oil pump 18 is connected with 29 axis of rear-wheel control oil pump, the front-wheel control oil pump 18 and the rear-wheel control oil pump
29 are connected on a control motor 30；
The repairing unit 2 includes: repairing Oil pump electrical machinery group 11, the first pressure duct filter 13, the second pressure duct
Filter 14, the first safety valve 17 and the second safety valve 16, the repairing Oil pump electrical machinery group 11 are duplex vane oil pump motor group,
The oil inlet of the repairing Oil pump electrical machinery group 11 is connect with external fuel tank, the repairing Oil pump electrical machinery group 11 by oil pipe respectively with
First pressure duct filter 13 and the connection of the second pressure duct filter 14, the first pressure duct filter 13 pass through oil
Pipe selects circuit 20 and rear-wheel selection circuit 26 to connect with front-wheel respectively, and the second pressure duct filter 14 passes through oil pipe point
It is not connect with front-wheel control oil pump 18 and rear-wheel control oil pump 29, the first pressure duct filter 13 connects front-wheel and selects back
First branch's oil pipe is provided on the oil pipe in road 20 and rear-wheel selection circuit 26, and the end of first branch oil pipe is equipped with the
One safety valve 17, first pressure gauge 12 is provided on first branch oil pipe, and the second pressure duct filter 14 connects
Second branch's oil pipe, the end of second branch oil pipe are provided on the oil pipe of front-wheel control oil pump 18 and rear-wheel control oil pump 29
End is equipped with the second safety valve 16, is provided with second pressure gauge 15 on second branch oil pipe；
The stretching unit 3, for controlling the displacement and pressure of the tensioning of crawler belt 23；
The cooling unit 4, for the hot oil in cooling oil box.
Wherein, the oil inlet and outlet of the oil inlet and outlet connection front-wheel drive load motor 21 of front-wheel oil pump, while connecting front-wheel
The oil inlet and outlet in circuit 20 is selected, the oil inlet and outlet connection rear wheel drive of rear-wheel oil pump loads the oil inlet and outlet of motor 25, simultaneously
Connect the oil inlet and outlet in rear-wheel selection circuit 26.
Wherein, the first pressure duct filter 13 and the second pressure duct filter 14 are for ensureing into main control unit
The cleannes of 1 oil liquid.
Wherein, main control unit 1 uses 30 band of 185KW frequency control motor, two 210 inclined disc type axial columns of discharge capacity high pressure
Plug pump.When controlling 30 revolving speed of motor is 2000r/min, power 150KW, two high pressure axial plunger pumps are in the form of concatenated
Composition, high pressure axial plunger pump are electric proportional control mode, can accurate reliable control oil pump discharge capacity.
Wherein, high pressure cam-type axial piston pump integrates the high-pressure overflow valve of repairing function, is used for repairing, control and cooling
Circuit.Main control is divided into two groups of symmetrical loading oil circuits, and there are two proportional pressure control valves 27 for every group of loaded ribbon, to meet the big stream of system
The requirement of amount, high pressure, whole system are able to achieve slowly steady load.
Wherein, the repairing Oil pump electrical machinery group 11 of repairing unit 2 is by motor, duplex hydraulic pump, shaft coupling, pump block composition, institute
State two oil outlets of pair vane pump by oil pipe respectively with the first pressure duct filter and the second pressure duct filter
The oil outlet of connection, the first pressure duct filter selects circuit and rear-wheel that circuit is selected to connect with front-wheel respectively by oil pipe
It connects, the oil outlet of the second pressure duct filter is connected with front-wheel control oil pump and rear-wheel control oil pump respectively by oil pipe
It connecing, the first pressure duct filter oil outlet connects the oil inlet and first pressure gauge of the first safety valve simultaneously, and described the
The oil outlet of two pressure duct filters connects the oil inlet and second pressure gauge of the second safety valve simultaneously.
Wherein, the motor of the repairing Oil pump electrical machinery group 11 of repairing unit 2 is double with high-pressure high-flow using 15KW-4 grades of motors
Join vane pump, a pump is used for the repairing of loading section pipeline in pair vane pump, and a pump is used for two high pressure Variable plunger pumps
Repairing, two groups of repairings are respectively provided with pressure regulator valve and pressure duct filter.
Wherein, accurate filter filtering accuracy is 3um, protects hydraulic oil not contaminated.
Wherein, the front-wheel selection circuit 20 and rear-wheel selection circuit 26 include: that 4 the first check valves form
Bridge-type selects circuit, 1 proportional pressure control valve 27 and 1 protecting against shock check valve, and first check valve is high by oil pipe and first
Pressure pipe pipe filter 13 connects, and the proportional pressure control valve 27 selects circuit and protecting against shock check valve to connect by pipeline with bridge-type
Wherein, the selection mechanism is made of oil inlet, oil outlet, repairing mouth, oil return opening, and the repairing mouth of selection mechanism is logical
Oil pipe is crossed to connect with the oil outlet of the first pressure duct filter, the oil inlet of selection mechanism, oil outlet respectively with control oil pump
Oil inlet, oil outlet connection, the oil return opening of the oil inlet of the proportional pressure control valve and selection mechanism connects, the proportional overflow
The oil return opening of valve is connect by oil pipe with the oil inlet of protecting against shock check valve, and described recoil hits oil outlet and the selection of check valve
The repairing mouth of mechanism connects.It is equipped with pressure gauge and pressure sensor at the oil inlet and outlet of the selection mechanism, for monitoring pipe
The pressure on road.
Wherein, it is provided with high-pressure flowmeter 19 on the oil pipe of the main control unit 1, for monitoring in system operation
Flow, pipeline select steel wire winding rubber hose, rubber hose steel wire protective case.
Wherein, the front-wheel control oil pump 18 and the rear-wheel control oil pump 29 are high pressure cam-type axial piston pump.
Wherein, the stretching unit 3 includes: tensioning Oil pump electrical machinery group 10, tensioning pressure regulator valve 7, tensioning pressure table 6, electromagnetism
The inlet port of reversal valve 8 and tensioning hydro-cylinder 9, the tensioning Oil pump electrical machinery group 10 is connect with external fuel tank, the tensioning oil pump electricity
Unit 10 is connect by oil pipe with solenoid directional control valve 8, and the solenoid directional control valve 8 is connect by oil pipe with tensioning hydro-cylinder 9, and described
Locking oil cylinder 9 is used to control the tensioning of crawler belt 23, is provided on the oil pipe of the tensioning Oil pump electrical machinery group 10 connection solenoid directional control valve 8
Branch oil pipe, the both ends of the branch oil pipe are respectively arranged with tensioning pressure regulator valve 7 and tensioning pressure table 6, and tensioning pressure regulator valve 7 is used for
Tensioning pressure is set, and tensioning pressure table 6 is for observing clamping system pressure.
Wherein, it is described tensioning Oil pump electrical machinery group 10 in oil pump out of the mouth and pressure regulator valve oil inlet connect, while with
The oil inlet of solenoid directional control valve connects.
Wherein, driving speed reducer output end is connected by crawler belt 23, passes through flexible, the tune of tensioning hydro-cylinder 9 in stretching unit 3
The relative distance of whole speed reducer, stretching unit 3 match high-pressure plunger pump using 15KW-4 grades of motors, guarantee that tensile force is enough, tensioning
The commutation of unit 3 is realized by solenoid directional control valve 8.
Wherein, the oil pump in the tensioning Oil pump electrical machinery group 10 is constant pressure variable plunger pump, by adjusting pressure fuel pump control
The displacement and pressure that crawler belt 23 processed is tensioned, so that the crawler belt 23 for being applicable in different type of machines is tested.
Wherein, the cooling unit 4 includes: cooling oil pump motor group, cooling pressure regulator valve, panel cooler 34 and cooling pressure
The inlet port of power table, the cooling oil pump motor group is connect with external fuel tank, and the cooling oil pump motor group passes through oil pipe and plate
Formula cooler 34 connects, and the oil outlet of the panel cooler 34 is connect by oil pipe with external fuel tank, the cooling oil pump electricity
Branch's oil pipe is provided on oil pipe between unit and panel cooler 34, be provided on branch's oil pipe cooling pressure regulator valve and
Cooling pressure table.
Wherein, the oil outlet of oil pump is connect with the oil inlet of cooling safety valve in the cooling oil pump motor group, is connected simultaneously
Connect the oil inlet of panel cooler.
Wherein, cooling unit 4 is made of cooling oil pump motor group and panel cooler 34.Motor uses 30KW-4 grades of motors
Have the function that protect component to guarantee that whole system heat dissipation is good with big flow low pressure gear pump.
Experimentation is as follows:
Operating condition one: rear-wheel rotates forward, and front-wheel also actively rotates forward
The pressure-regulating portion of two proportional pressure control valves is loosened completely, opens stretching unit, gives tensioning solenoid valves, tensioning oil
Cylinder carries out tensioning movement, adjusts the pressure of tensioning pressure regulator valve, by crawler tensioning to suitable position, crawl repairing unit is determined
The disengaging oil pipe direction of rear-wheel control oil pump 29 and rear wheel drive load motor 25, drives further according to rear-wheel control oil pump 29 and rear-wheel
The disengaging oil pipe position configuration front-wheel control oil pump 18 of dynamic load motor 25 and the disengaging oil pipe side of front-wheel drive load motor 21
To.It rotates the driving speed reducer of front and back wheel all actively forward, starts repairing unit, slowly adjust the pressure of repairing pressure regulator valve,
Oil compensation pressure is adjusted in 20bar.Start cooling unit, slowly adjusts cooling pressure regulator valve to 25bar, distinguished by input current
The discharge capacity for adjusting front-wheel control oil pump and rear-wheel control oil pump, makes the discharge capacity of front and back wheel control oil pump equal, then slow respectively
The pressure of front and back wheel proportional pressure control valve is adjusted, front-wheel overflow valve and rear-wheel overflow valve pressure difference can be adjusted according to test
Section, at this point, motor acting only needs to overcome frictional force and system heat generation.
Operating condition two rotates forward when front-wheel, and rear-wheel it is oriented after the trend that rotates but by front-wheel with rotating forward
The pressure-regulating portion of two proportional pressure control valves is loosened completely, opens stretching unit, gives tensioning solenoid valves, tensioning oil
Cylinder carries out tensioning movement, adjusts the pressure of tensioning pressure regulator valve, by crawler tensioning to suitable position, crawl repairing unit is determined
The disengaging oil pipe position of rear-wheel control oil pump 29 and rear wheel drive load motor 25, drives further according to rear-wheel control oil pump 29 and rear-wheel
The disengaging oil pipe position configuration front-wheel control oil pump 18 of dynamic load motor 25 and the disengaging oil pipe position of front-wheel drive load motor 21
It sets, starts repairing unit, slowly adjust the pressure of repairing pressure regulator valve, oil compensation pressure is adjusted in 20bar.Start cooling unit,
Cooling pressure regulator valve is slowly adjusted to 25bar.Adjust the row of front-wheel control oil pump and rear-wheel control oil pump respectively by input current
Amount makes the discharge capacity of front-wheel control oil pump be greater than rear-wheel control oil pump, slowly adjusts front and back wheel proportional pressure control valve pressure, pass through adjusting
The discharge capacity difference of front and back wheel and the pressure of proportional pressure control valve adjust the size of load, to reach test purpose, complete test.
Above-described is only that a kind of hydraulic loaded for cterpillar drive disclosed in the utility model is tested
The preferred embodiment of system, it is noted that for those of ordinary skill in the art, do not departing from the utility model wound
Under the premise of making design, various modifications and improvements can be made, and these are all within the protection scope of the present invention.
Claims (7)
1. a kind of hydraulic loaded test macro for cterpillar drive, which is characterized in that the system comprises: main control
Unit, repairing unit, stretching unit, cooling unit and external fuel tank lead between the main control unit and the repairing unit
Oil pipe to be crossed to be attached, the repairing unit, stretching unit, cooling unit pass through oil pipe and connect with external fuel tank,
The main control unit includes: front-wheel drive load motor, rear wheel drive load motor, front-wheel control oil pump, rear wheel
Liquefaction pump, front-wheel selection circuit, rear-wheel selection circuit and control motor, the front-wheel drive load motor and rear wheel drive load
The output shaft of motor is connected on the driving speed reducer of front-wheel and the driving speed reducer of rear-wheel, and the front-wheel control oil pump is logical
It crosses oil pipe to connect with front-wheel drive load motor and front-wheel selection circuit, the rear-wheel control oil pump passes through oil pipe and rear wheel drive
Load motor is connected with rear-wheel selection circuit, and the front-wheel control oil pump is connected with the rear-wheel control oil pump axis, before described
Wheel control oil pump and the rear-wheel control oil pump are connected on a control motor；
The repairing unit includes: repairing Oil pump electrical machinery group, the first pressure duct filter, the second pressure duct filter,
One safety valve and the second safety valve, the repairing Oil pump electrical machinery group are duplex vane oil pump motor group, the repairing Oil pump electrical machinery
Group inlet port connect with external fuel tank, the repairing Oil pump electrical machinery group pass through oil pipe respectively with the first pressure duct filter and
The connection of second pressure duct filter, the first pressure duct filter select circuit and rear-wheel with front-wheel respectively by oil pipe
Circuit connection is selected, the second pressure duct filter is connected with front-wheel control oil pump and rear-wheel control oil pump respectively by oil pipe
It connects, is provided with the first branch on the oil pipe in the first pressure duct filter connection front-wheel selection circuit and rear-wheel selection circuit
Oil pipe is equipped with the first safety valve on first branch oil pipe, is provided with first pressure gauge on first branch oil pipe, institute
It states and is provided with second branch's oil pipe on the oil pipe of the second pressure duct filter connection front-wheel control oil pump and rear-wheel control oil pump,
Second safety valve is installed on second branch oil pipe, is provided with second pressure gauge on second branch oil pipe；
The stretching unit, for controlling the displacement and pressure of crawler tensioning；
The cooling unit, for the hot oil in cooling oil box.
2. the hydraulic loaded test macro according to claim 1 for cterpillar drive, which is characterized in that described
Front-wheel selection circuit and rear-wheel selection circuit include: that the bridge-type of multiple first check valve compositions selects circuit, ratio to overflow
Valve and protecting against shock check valve are flowed, first check valve is connect by oil pipe with the first pressure duct filter, and the ratio is overflow
Stream valve selects circuit and protecting against shock check valve to connect by pipeline with bridge-type.
3. the hydraulic loaded test macro according to claim 1 for cterpillar drive, which is characterized in that described
High-pressure flowmeter is provided on the pipeline of main control unit.
4. the hydraulic loaded test macro according to claim 1 for cterpillar drive, which is characterized in that described
Front-wheel control oil pump and the rear-wheel control oil pump are high pressure cam-type axial piston pump.
5. the hydraulic loaded test macro according to claim 1 for cterpillar drive, which is characterized in that described
Stretching unit includes: to be tensioned Oil pump electrical machinery group, tensioning pressure regulator valve, tensioning pressure table, solenoid directional control valve and tensioning hydro-cylinder, and described
The inlet port of tight Oil pump electrical machinery group is connect with external fuel tank, and the tensioning Oil pump electrical machinery group is connected by oil pipe and solenoid directional control valve
It connecing, the solenoid directional control valve is connect by oil pipe with tensioning hydro-cylinder, and the tensioning hydro-cylinder is for controlling the tensioning of crawler belt, and described
It is provided with branch oil pipe on the oil pipe of tight Oil pump electrical machinery group connection solenoid directional control valve, the both ends of the branch oil pipe are respectively arranged with
It is tensioned pressure regulator valve and tensioning pressure table.
6. the hydraulic loaded test macro according to claim 5 for cterpillar drive, which is characterized in that described
The oil pump being tensioned in Oil pump electrical machinery group is constant pressure variable plunger pump.
7. the hydraulic loaded test macro according to claim 1 for cterpillar drive, which is characterized in that described
Cooling unit includes: cooling oil pump motor group, cooling pressure regulator valve, panel cooler and cooling pressure table, the cooling oil pump electricity
The oil inlet of unit is connect with external fuel tank, and the cooling oil pump motor group is connect by oil pipe with panel cooler, the plate
The oil outlet of formula cooler is connect by oil pipe with external fuel tank, the oil between the cooling oil pump motor group and panel cooler
It is provided with branch's oil pipe on pipe, is provided with cooling pressure regulator valve and cooling pressure table on branch's oil pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820916948.5U CN208719035U (en) | 2018-06-13 | 2018-06-13 | Hydraulic loaded test macro for cterpillar drive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820916948.5U CN208719035U (en) | 2018-06-13 | 2018-06-13 | Hydraulic loaded test macro for cterpillar drive |
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| CN208719035U true CN208719035U (en) | 2019-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612687A (en) * | 2018-06-13 | 2018-10-02 | 柳州北斗星液压科技有限公司 | Hydraulic loaded for cterpillar drive tests system |
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2018
- 2018-06-13 CN CN201820916948.5U patent/CN208719035U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612687A (en) * | 2018-06-13 | 2018-10-02 | 柳州北斗星液压科技有限公司 | Hydraulic loaded for cterpillar drive tests system |
| CN108612687B (en) * | 2018-06-13 | 2024-01-23 | 柳州北斗星液压科技有限公司 | Hydraulic loading test system for crawler-type running gear |
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Effective date of registration: 20191031 Address after: 545000 in Workshop 12, jiutoushan Road, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee after: LIUZHOU SHENGAO TECHNOLOGY Co.,Ltd. Address before: No. 1, unit 1-1, No. 96-2, No. 96-2, City Station Road, the Guangxi Zhuang Autonomous Region, the Guangxi Zhuang Autonomous Region Patentee before: LIUZHOU BEIDOUXING HYDRAULIC TECHNOLOGY CO.,LTD. |
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Address after: 545003 No. 2-255-10, office building, North ecological new area, Shatang Industrial Park, No. 7, Yangliu Road, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee after: LIUZHOU SHENGAO TECHNOLOGY Co.,Ltd. Address before: 545000 in Workshop 12, jiutoushan Road, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee before: LIUZHOU SHENGAO TECHNOLOGY Co.,Ltd. |
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