CN208804076U - Automatically controlled open and close type hydraulic test bench - Google Patents
Automatically controlled open and close type hydraulic test bench Download PDFInfo
- Publication number
- CN208804076U CN208804076U CN201821404994.3U CN201821404994U CN208804076U CN 208804076 U CN208804076 U CN 208804076U CN 201821404994 U CN201821404994 U CN 201821404994U CN 208804076 U CN208804076 U CN 208804076U
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- pump
- valve
- circuit
- control
- test bench
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Abstract
The utility model relates to a kind of automatically controlled open and close type hydraulic test bench, belong to hydraulic test bench field.The utility model includes dynamical system, transmission system, loading system, sensing system, control system.Dynamical system is made of governor and three-phase permanent magnet synchronous motor etc.；Transmission system is made of enclosed variable pump and enclosed variable displacement motor, wherein including necessary repairing fuel tank, fan cooler etc.；Loading system is made of constant displacement pump, fixed displacement motor and proportional pressure control valve etc.；Sensing system mainly includes dynamic torque rotational speed meters, pressure sensor, flow sensor and corresponding signal conditioning circuit, data collecting card etc.；Control system completes the control to variable pump, variable displacement motor, proportional pressure control valve by knob current regulator.The utility model realizes closed circuit using pump for engineering；Control to major loop and each bypass flow, pressure is realized using electric-controlled type variable pump and electromagnetic proportional valve, and is monitored in real time by flowmeter, pressure gauge.
Description
Technical field
The utility model belongs to hydraulic test bench field, and more specifically, it relates to a kind of automatically controlled open and close type hydraulic tests
Platform.
Background technique
Hydrostatic closed-type cylindrical gearing system has become the important form of modern project vehicle drive system, and automatically controlled open and close type is hydraulic
The Research idea of testing stand is derived from the development trend and respective technical advantage of Hydraulic Power Transmission System and control system.In hydraulic biography
It is dynamic to become using electro-hydraulic proportional control technology with control technology aspect and realize microelectronic product and high-power Engineering Control equipment
Between bridge.The development of Hydraulic Elements itself and Controlled by micro computer technology combine, and make Modern hydraulic transmission application in engineering
It may be implemented accurately to control and automatically control when system of vehicle transmission.Traditional closed system realizes closed system circuit using enclosed pump,
Although opposite, its reliability of open system circuit is higher, operating process is simple, overall power is lower, and there are higher costs, no
Easy-maintaining disadvantage makes it difficult to large-scale application in engineering truck.
Summary of the invention
Problem to be solved in the utility model is, in view of the deficiencies of the prior art, proposes a kind of automatically controlled open and close type liquid
Press testing stand.
The utility model relates to a kind of automatically controlled open and close type hydraulic test bench, and it is mutual that formula hydraulic system can be opened and closed in this testing stand
It changes, wherein the power source of closed circuit comes from pump for engineering；This testing stand can be used for detecting each hydraulic component working performance, to being
System monitoring running state and fault diagnosis, it is characterised in that: open and close type hydraulic test bench is by dynamical system, transmission system, load
System, sensing system, five part of control system composition；Dynamical system includes pump for engineering (main variable pump), slippage pump, cooling
Device, return filter；Transmission system is made of hydraulic circuit and check valve, overflow valve, SUN adjusting flushing valve, board-like speed governing valve；
Sensing system is responsible for the mechanical detection with hydraulic pressure signal, mainly by revolving speed, torque, pressure, flow sensor and each sensing
The Acquisition Circuit of device electric signal forms；Control system mainly completes the control to main variable pump, electromagnetic proportional valve, solenoid directional control valve
System.
Main variable pump provides power for closed system circuit, and loading system provides constant pressure, slippage pump for main variable pump
For the repairing of closed system circuit；The loading system is by constant displacement pump, proportional pressure control valve composition.
When main variable pump, loading system do not work, this hydraulic circuit is open system circuit when repairing pump work, when
This system circuit is closed system circuit when slippage pump, main variable pump, load pump work at the same time.
The utility model beneficial effect is:
1. realizing closed system circuit using pump for engineering, production cost can be reduced, only a small amount of oil liquid is drawn from fuel tank,
Loss oily in fuel tank can be reduced；
2. hydraulic pump is electric-controlled type variable pump, the discharge capacity pumped by adjusting current control realizes direct source control system
Flow, electromagnetic proportional valve control each tributary circuit flow and pressure, and flowmeter, pressure gauge carry out real-time monitoring；
3. can acquire the signal of electricity, machine, liquid by electro-hydraulic integrated control, be monitored to system running state and failure
Diagnosis improves system job stability, reduces working service cost；
4. control model is to be manually entered control: according to the data of flowmeter, pressure transmitter, torque meter, artificial is defeated
Enter control variable value, controls the voltage of electronically controlled proportional valve, the logical position of flow and solenoid directional control valve.
Detailed description of the invention
Fig. 1 is automatically controlled open and close type hydraulic test bench schematic diagram a.
Fig. 2 is automatically controlled open and close type hydraulic test bench hydraulic schematic diagram.
Fig. 3 is automatically controlled open and close type hydraulic test bench circuit diagram.
Fig. 4 is automatically controlled open and close type hydraulic test bench schematic diagram b.
Fig. 5 is automatically controlled open and close type hydraulic test bench schematic diagram c.
Motor 1, main variable pump 2, constant displacement pump 3, pressure gauge 4, overflow valve 5, check valve 6, No. 1 flow sensors 7, check valve
8, check valve 9, overflow valve 10, overflow valve 11, the flow sensor 13,2 of overflow valve 12,5 pressure gauge 14, check valve 15, benefit
Oil pump 16, motor 17, return filter 18,19, No. 1 pressure gauges 20 of cooler, ball valve 21, No. 2 board-like speed governing valves 22, SUN tune
Save flushing valve 23, SUN adjusts 24, No. 1 board-like speed governing valves 25 of flushing valve, the flow sensor of pressure gauge 27,2 of ball valve 26,3
28, No. 2 electromagnetism of pressure sensor 32,2 of flow sensor 31,3 of electromagnetic proportional valve 30,3 of pressure sensor 29,2 change
To valve 33, drawing motor 34, rotary speed torque sensor 35-1, rotary speed torque sensor 35-2, constant displacement pump 36, pressure gauge 37, overflow
Flow the electromagnetic proportional valve 39,4 of valve 38,1 flow sensor 40,1 pressure sensor 41,1 solenoid directional control valve 42, fuel tank
43, display 44, emergency stop switch 45, air switch 46, relay 47, constant pressure module 48, electric crossover board 49, gateway 50, open
Dynamic button 51, start and stop module 52, control panel 53, main variable pump and electromagnetic proportional valve control module 54, reversal valve control switch
55。
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is further elaborated.
Embodiment 1: as shown in Fig. 2, Fig. 4, Fig. 5, a kind of automatically controlled open and close type hydraulic test bench is used for transmission system of engineering vehicle
Unified test examination, which is characterized in that open and close type hydraulic test bench is by dynamical system, transmission system, loading system, sensing system, control
Five part of system composition processed；Dynamical system includes main variable pump 2, slippage pump 16, cooler 19, return filter 18；Power train
System is by hydraulic circuit and check valve 6, check valve 8, check valve 9, check valve 15, overflow valve 5, overflow valve 10, overflow valve 11, overflow
Valve 12, overflow valve 38, SUN adjust flushing valve 23, SUN adjusts 22, No. 1 board-like speed governing valves 25 of flushing valve 24,2 board-like speed governing valves
Composition；Loading system is made of constant displacement pump 3, overflow valve 5；Sensing system is responsible for the mechanical detection with hydraulic pressure signal, main to wrap
Containing rotary speed torque sensor 35, pressure gauge 4, pressure gauge 14, pressure gauge 20, the pressure of pressure sensor 29,3 of pressure gauge 27,2
The flow sensor 13,2 flow sensor 28,3 of flow sensor 7,5 of pressure sensor 41,1 of sensor 32,1 stream
The Acquisition Circuit of 31, No. 4 flow sensors 40 of quantity sensor and electric signal；Control system is mainly completed to main variable pump 2,2
The control of 33, No. 1 pressure sensors 41 of solenoid directional control valve of electromagnetic proportional valve 39,2 of electromagnetic proportional valve 30,1.
Embodiment 2, as shown in Figure 3, Figure 4, closed system working principle presses emergency stop switch 45, hydraulic test bench overhead
Air cock 46 is closed, and Control testing bench closes the switch, and electronic equipment (flowmeter, pressure gauge, display 44, gateway 50) power supply is opened
It closes and closes, adjust pressure regulator and light adjuster (the corresponding range 0-25Mpa of the range 0.2-0.68A of pressure regulator of electromagnetic proportional valve 39
For the passable maximum pressure in circuit, it is that circuit is passable that the range 0.2-0.68A of light adjuster, which corresponds to range 0-125L/min,
Maximum flow), it is proposed that pressure regulator is adjusted to 0.6A and light adjuster is adjusted to 0.5A, and emergency stop switch 45 is unscrewed, and successively starts slippage pump 16,
Main variable pump 2, according to required simulated environment, adjusting main pump light adjuster, (the range 0.2-0.68A of light adjuster corresponds to range discharge capacity 0-
80ml/r) to suggest being adjusted to 0.4A, the left and right control switch button of solenoid directional control valve of the same race can not be powered (i.e. while pressing) simultaneously,
When load load, fixed displacement motors 34 or load normal rotation are waited, then offered load (pays attention to the specified of load motor from low to high
Pressure), each sensing data can also be sent to display 44, and will by 53 real-time display of control panel by gateway 50
Data are preserved for user's detailed analysis, and shutdown sequence is completed in experiment: closing main variable pump 2, slippage pump 16, reversal valve control
Switch 55, various governor switch, each electronic sensor power supply, air switch 46 on testing stand.
Embodiment 3, as shown in figure 5, installing revolving speed torque revolving speed between 2 input shaft of 1 output shaft of motor and main variable pump
Instrument 35-1；To detect the output mechanical energy of motor 1, i.e., the input mechanical energy of hydraulic main variable pump 2；Enclosed electricity ratio is selected to become
Amount pump (main variable pump 2) and constant displacement pump 3 are drive system, and wherein constant displacement pump 3 provides constant pressure for main variable pump 2, while
Overflow valve 10 is devised on Hydraulic Power Transmission System circuit, to adjust the maximum pressure of transmission system；Inspection for hydraulic parameter
It surveys, the pressure sensor 41 of pressure sensor 32,1 of No. 2 pressure sensors 29,3 is selected to detect pump output pressure and horse respectively
Up to return oil pressure, 28, No. 3 flow sensors of flow sensor of flow sensor 13,2 of No. 1 flow sensor 7,5 are selected
31, No. 4 flow sensors 40 detect the reality output flow of pump and the delivery flow of motor and each bypass flow respectively；Together
When, utilize the temperature of temperature sensor detection system；The load of system by constant displacement pump 36(select bent axis type axial piston pump), overflow valve
38 compositions, install torque rotational speed meters 35-2, to detect between the input shaft of constant displacement pump 36 and the output shaft of drawing motor 34
The output mechanical energy of dragging system (load), while feedback signal, the number of acquisition can also be provided for loading system and drive system
According to the inertia load that can be used for simulating actual loading.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Any modifications, equivalent replacements, and improvements etc. done within the spirit and principle of utility model, should be included in the utility model
Protection scope within.
Claims (3)
1. a kind of automatically controlled open and close type hydraulic test bench, this testing stand realizes that closed system is returned as main variable pump using pump for engineering
Road；Formula system interchange can be opened and closed in this testing stand；This testing stand can be used for detecting each hydraulic component working performance, to system
Operating status is monitored and fault diagnosis, it is characterised in that: open and close type hydraulic test bench by dynamical system, transmission system, plus
Loading system, sensing system, five part of control system composition；Dynamical system is by pump for engineering, slippage pump, cooler, oil return filter
Device composition；Transmission system is made of hydraulic circuit and check valve, overflow valve, SUN adjusting flushing valve, board-like speed governing valve；Sensor
System is made of the Acquisition Circuit of revolving speed, torque, pressure, flow sensor and electric signal；Control system can be realized to main transformer
Measure the control of pump, electromagnetic proportional valve, solenoid directional control valve.
2. a kind of automatically controlled open and close type hydraulic test bench according to claim 1, it is characterised in that: the testing stand uses engineering
Pump realizes closed system circuit as main variable pump, and wherein main variable pump provides power for closed system circuit；The load system
System provides constant pressure for main variable pump, and wherein loading system is made of constant displacement pump, proportional pressure control valve；The slippage pump is enclosed
System circuit repairing.
3. a kind of automatically controlled open and close type hydraulic test bench according to claim 1, it is characterised in that: the testing stand can be opened
Closed system is exchanged, and when main variable pump, load air pump inoperative, repairing pump work, this system circuit is open system circuit；When
This system circuit is closed system circuit when slippage pump, main variable pump, load pump work at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821404994.3U CN208804076U (en) | 2018-08-29 | 2018-08-29 | Automatically controlled open and close type hydraulic test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821404994.3U CN208804076U (en) | 2018-08-29 | 2018-08-29 | Automatically controlled open and close type hydraulic test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208804076U true CN208804076U (en) | 2019-04-30 |
Family
ID=66235691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821404994.3U Expired - Fee Related CN208804076U (en) | 2018-08-29 | 2018-08-29 | Automatically controlled open and close type hydraulic test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208804076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730269A (en) * | 2018-08-29 | 2018-11-02 | 新疆农业大学 | Automatically controlled open and close type hydraulic test bench |
-
2018
- 2018-08-29 CN CN201821404994.3U patent/CN208804076U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730269A (en) * | 2018-08-29 | 2018-11-02 | 新疆农业大学 | Automatically controlled open and close type hydraulic test bench |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190430 Termination date: 20200829 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |