CN107401535A - A kind of hydraulic motor test stand - Google Patents
A kind of hydraulic motor test stand Download PDFInfo
- Publication number
- CN107401535A CN107401535A CN201710624289.8A CN201710624289A CN107401535A CN 107401535 A CN107401535 A CN 107401535A CN 201710624289 A CN201710624289 A CN 201710624289A CN 107401535 A CN107401535 A CN 107401535A
- Authority
- CN
- China
- Prior art keywords
- hydraulic control
- way valve
- working connection
- power recovery
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/855—Testing of fluid pressure systems
Abstract
The invention discloses a kind of hydraulic motor test stand, including main oil pump, tested hydraulic motor, deceleration device, loading hydraulic motor, Power Recovery motor and working connection, Power Recovery oil circuit；The tested hydraulic motor, the deceleration device, the loading hydraulic motor rigid attachment successively；The Power Recovery motor and the main oil pump also rigid attachment；The working connection includes the main oil pump, working connection bridge type return and the tested hydraulic motor；The Power Recovery oil circuit includes loading hydraulic motor, Power Recovery bridge type return and the Power Recovery motor.The present invention can realize that the performance to hydraulic motor, life-span are tested, load is simulated using hydraulic motor is loaded, and Partial Power is carried out Power Recovery using Power Recovery oil circuit and is used to drive main oil pump, the waste of energy is avoided, there is the advantages of energy-saving and emission-reduction.
Description
Technical field
The invention belongs to hydraulic test technical field of measurement and test, more particularly to a kind of hydraulic motor test stand.
Background technology
Hydraulic motor is after finalization of the manufacture, it is necessary to detect the service life under the conditions of the industry controls such as authorized pressure, rotating speed
This needs testing stand and hydraulic motor is tested.In existing hydraulic motor test stand, come by using proportional pressure control valve
Fictitious load.But such testing stand, with the progress of test, proportional pressure control valve, which can generate heat, causes oil temperature to rise, that is, tests
During, most of energy is converted into heat energy by proportional pressure control valve, result in the waste of energy, i.e., existing hydraulic motor
Testing stand not enough saves, relatively more to energy dissipation.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of hydraulic motor test stand of energy-saving and emission-reduction.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of hydraulic motor test stand, it is characterised in that：Including main oil pump, tested hydraulic motor, deceleration device, loading liquid
Pressure motor, Power Recovery motor and working connection, Power Recovery oil circuit；
The tested hydraulic motor, the deceleration device, the loading hydraulic motor rigid attachment successively；The power returns
Receive motor and the main oil pump also rigid attachment；
The working connection includes the main oil pump, working connection bridge type return and the tested hydraulic motor；
The working connection bridge type return by the first hydraulic control one-way valve, the second hydraulic control one-way valve, the 3rd hydraulic control one-way valve and
4th hydraulic control one-way valve concatenation is formed, and has working connection the between first hydraulic control one-way valve and second hydraulic control one-way valve
One node, has a working connection section point between second hydraulic control one-way valve and the 3rd hydraulic control one-way valve, and the described 3rd
There is the node of working connection the 3rd, the 4th hydraulic control one-way valve and described between hydraulic control one-way valve and the 4th hydraulic control one-way valve
There is working connection fourth node between first hydraulic control one-way valve；
The oil-out of the main oil pump is connected to the working connection first node of the working connection bridge type return, the working connection
The working connection section point of bridge type return is connected to the oil inlet of the tested hydraulic motor, the tested hydraulic motor it is fuel-displaced
Mouth is connected to the working connection fourth node of the working connection bridge type return, the node of working connection the 3rd of the working connection bridge type return
It is connected to the oil inlet of main oil pump；
The Power Recovery oil circuit includes loading hydraulic motor, Power Recovery bridge type return and the Power Recovery
Motor；
The Power Recovery bridge type return by the 5th hydraulic control one-way valve, the 6th hydraulic control one-way valve, the 7th hydraulic control one-way valve with
And the 8th hydraulic control one-way valve concatenation form；There is recovery the between 5th hydraulic control one-way valve and the 6th hydraulic control one-way valve
One node, there is recovery section point, the 7th liquid between the 6th hydraulic control one-way valve and the 7th hydraulic control one-way valve
Controlling between check valve and the 8th hydraulic control one-way valve has the 3rd node of recovery, the 8th hydraulic control one-way valve and the described 5th
There is recovery fourth node between hydraulic control one-way valve；
The oil-out of the loading hydraulic motor is connected to the recovery fourth node of the Power Recovery bridge type return, described
The node of recovery the 3rd of Power Recovery bridge type return is connected to the oil inlet of Power Recovery motor, and the Power Recovery motor goes out
Hydraulic fluid port connects the recovery first node of the Power Recovery bridge type return, the recovery section point of the Power Recovery bridge type return
It is connected to the oil inlet of the loading hydraulic motor.
The present invention can realize that the performance to hydraulic motor, life-span are tested using above-mentioned technical proposal, utilize loading
Hydraulic motor simulates load, and Partial Power is carried out Power Recovery using Power Recovery oil circuit and is used to drive main oil pump, keeps away
The waste of energy is exempted from, there is the advantages of energy-saving and emission-reduction.
Brief description of the drawings
Fig. 1 is the hydraulic scheme of the present invention.
Embodiment
As shown in figure 1, the hydraulic motor test stand of the present invention, including main oil pump 33, it is tested hydraulic motor 69, slow down dress
Put, load hydraulic motor 64, Power Recovery motor 38 and working connection, Power Recovery oil circuit, repairing road, bridge-type control oil circuit.
Deceleration device is made up of the first reductor 67.2 and the second reductor 67.1 concatenation.
Wherein, working connection is closed cycle oil circuit, including main oil pump 33, working connection bridge type return and tested hydraulic motor
69.The oil-out of main oil pump 33 is connected to the oil inlet of tested hydraulic motor 69 through working connection bridge type return 33.1, is tested hydraulic pressure
The oil-out of motor 69 is connected to the oil inlet of main oil pump 33 through working connection bridge type return again.
Working connection bridge type return is by the first hydraulic control one-way valve 44.5, the second hydraulic control one-way valve 44.6, the 3rd hydraulic control one-way valve
44.7 and the 4th the concatenation of hydraulic control one-way valve 44.8 form, the first hydraulic control one-way valve 44.5 and the second hydraulic control one-way valve 44.6 it
Between there is working connection first node, there is working connection second between the second hydraulic control one-way valve 44.6 and the 3rd hydraulic control one-way valve 44.7
Node, there is the node of working connection the 3rd, the 4th hydraulic control list between the 3rd hydraulic control one-way valve 44.7 and the 4th hydraulic control one-way valve 44.8
To having working connection fourth node between the hydraulic control one-way valve 44.5 of valve 44.8 and first.First hydraulic control one-way valve 44.5, the second liquid
Control check valve 44.6, the 3rd hydraulic control one-way valve 44.7 and the 4th hydraulic control one-way valve 44.8 pass through a two-position four-way electromagnetism respectively
Reversal valve control opens and closes.
Specifically, the oil-out of main oil pump 33 is connected to the working connection first node of working connection bridge type return, working connection bridge
The working connection section point in formula loop is connected to the oil inlet of tested hydraulic motor 69, is tested the oil-out connection of hydraulic motor 69
To the working connection fourth node of working connection bridge type return, the node of working connection the 3rd of working connection bridge type return is connected to main oil pump 33
Oil inlet.
Therefore, working connection is divided into four sections, i.e. the working connection first segment of the oil-out of main oil pump 33 and working connection bridge type return
Oil circuit between point is the first working connection section 101, the working connection section point and tested hydraulic motor 69 of working connection bridge type return
Oil inlet between oil circuit be the second working connection section 102, be tested hydraulic motor oil-out and working connection bridge type return master
Oil circuit between oil circuit fourth node is the 3rd working connection section 103, the node of working connection the 3rd of working connection bridge type return and main oil
Oil circuit between the oil inlet of pump 33 is the 4th working connection section 104.
Rigidity joins successively for tested hydraulic motor 69, the first reductor 67.2, the second reductor 67.1, loading hydraulic motor 64
Connect.Power Recovery motor 38 and main oil pump 33 also rigid attachment.
Power Recovery oil circuit is also closed cycle oil circuit, including loading hydraulic motor 64, Power Recovery bridge type return and
Power Recovery motor 38.The oil-out of loading hydraulic motor 64 is connected to Power Recovery motor through Power Recovery bridge type return 64.1
38 oil inlet, the oil-out of Power Recovery motor 38 are connected to loading hydraulic motor 64 through Power Recovery bridge type return 64.1 again
Oil inlet.
Power Recovery bridge type return 64.1 is by the 5th hydraulic control one-way valve 44.1, the 6th hydraulic control one-way valve 44.2, the 7th hydraulic control
The hydraulic control one-way valve 44.4 of check valve 44.3 and the 8th concatenation is formed.In the 5th hydraulic control one-way valve 44.1 and the 6th hydraulic control one-way valve
There is recovery first node between 44.2, there is recovery the between the 6th hydraulic control one-way valve 44.2 and the 7th hydraulic control one-way valve 44.3
Two nodes, there is the 3rd node of recovery, the 8th hydraulic control list between the 7th hydraulic control one-way valve 44.3 and the 8th hydraulic control one-way valve 44.4
Fourth node is reclaimed to having between the hydraulic control one-way valve 44.1 of valve 44.4 and the 5th.5th hydraulic control one-way valve 44.1, the 6th hydraulic control
Check valve 44.2, the 7th hydraulic control one-way valve 44.3 and the 8th hydraulic control one-way valve 44.4 also pass through a two-position four-way electromagnetism respectively
Reversal valve control opens and closes.
Specifically, the oil-out for loading hydraulic motor 64 is connected to the recovery fourth node of Power Recovery bridge type return, work(
The node of recovery the 3rd of rate recovery bridge type return is connected to the oil inlet of Power Recovery motor 38, Power Recovery motor 38 it is fuel-displaced
The recovery first node of mouth connection Power Recovery bridge type return, the recovery section point of Power Recovery bridge type return, which is connected to, to be added
The oil inlet of carrier fluid pressure motor 64.
Therefore, Power Recovery oil circuit is also divided into four sections, that is, the oil-out and Power Recovery bridge-type for loading hydraulic motor 64 return
Oil circuit between the recovery fourth node on road is the first oil recovery section 201, the node of recovery the 3rd of Power Recovery bridge type return
Oil circuit between the oil inlet of Power Recovery motor 38 is the second oil recovery section 202, the oil-out of Power Recovery motor 38
Oil circuit between the recovery first node of Power Recovery bridge type return is the 3rd oil recovery section 203, and Power Recovery bridge-type is returned
4th oil recovery section 204 of the oil circuit between the recovery section point on road and the oil inlet for loading hydraulic motor 64.
Repairing road includes slippage pump 6, repairing filter 12, main repairing bridge type return, loading repairing bridge type return.
Main repairing bridge type return is by the first check valve 26.1, the second check valve 26.2, the 3rd check valve 26.3 and the 4th
The concatenation of check valve 26.4 forms closed loop.There is main repairing first node between first check valve 26.1 and the second check valve 26.2,
There is main repairing section point, the 3rd check valve 26.3 and the 4th is unidirectional between second check valve 26.2 and the 3rd check valve 26.3
There is the main node of repairing the 3rd between valve 26.4, there is main repairing the 4th between the 4th check valve 26.4 and the first check valve 26.1
Node.
The first proportional pressure control valve 27.1 is connected between main repairing section point and main repairing fourth node.
Repairing bridge type return is loaded by the 5th check valve 26.5, the 6th check valve 26.6, the 7th check valve 26.7 and the
Eight check valves 26.8 concatenation forms closed loop.There is loading repairing first segment between 5th check valve 26.5 and the 6th check valve 26.6
Point, there is loading repairing section point, the 7th check valve 26.7 and the between the 6th check valve 26.6 and the 7th check valve 26.7
There is the loading node of repairing the 3rd between eight check valves 26.8, have between the 8th check valve 26.8 and the 5th check valve 26.5 and add
Carry repairing fourth node.
The second proportional pressure control valve 27.2 is connected between loading repairing section point and loading repairing fourth node.
Main repairing bridge type return and loading repairing bridge type return have the function of automatically selecting oil circuit trend, to proportional overflow
Valve sets an oil pressure relief value, and when the hydraulic pressure of side is too high, pressure exceedes the oil pressure relief value of proportional pressure control valve setting, ratio
Hydraulic valve turns on, and bridge type return turns on, and hydraulic oil is directly released into opposite side, realizes that pressure release reaches safeguard protection.
Slippage pump 6 is by motor drive operational.The oil inlet of slippage pump 6 is connected to main fuel tank 1 through ball valve, and oil-out is through repairing
Main check valve 11 connects repairing filter 12, and repairing filter 12 is connected to the first check valve of repairing 25.1, repairing the simultaneously again
Two check valves 25.2, the check valve 25.3 of repairing the 3rd, the check valve 25.4 of repairing the 4th and the main overflow valve 17 of repairing.Repairing is main to overflow
Stream valve 17 reconnects back main fuel tank 1.The main overflow valve 17 of repairing can be protected to oil circuit, when oil pressure is higher than repairing master in oil circuit
Overflow valve 17, the main overflow valve 17 of repairing turn on, and give oil circuit pressure release.
The first check valve of repairing 25.1 is connected to the main node of repairing the 3rd and the 4th working connection section 104 simultaneously again, and second mends
Oily check valve 25.2 is connected to main repairing first node and the first working connection section 101 simultaneously again, and the 3rd repairing check valve 25.3 is again
The loading node of repairing the 3rd is connected to simultaneously and the 4th oil recovery section 204, the 4th repairing check valve 25.4 are connected to simultaneously again
Load repairing first node and the first oil recovery section 201.
Bridge type return control oil circuit includes control oil pump 48, controlling filter 47.The control oil pump 48 is driven by motor
Dynamic, the oil inlet of control oil pump 48 connects main fuel tank 1 through ball valve, and the oil-out connection controlling filter 47 of control oil pump 48 should
Controlling filter 47 is through controlling check valve 46 to connect each two in working connection bridge type return and Power Recovery bridge type return respectively
Position four-way electromagnetic reversing valve.Oil circuit is controlled by the bridge type return, working connection bridge type return and Power Recovery bridge-type can be returned
The opening and closing of each hydraulic control one-way valve in road is controlled, so as to control the flow direction of hydraulic oil.
The hydraulic motor test stand working method of the present invention is as follows：
Start slippage pump 6 first, by repairing filter 12, opening repairing the first check valve 25.1, the second repairing are unidirectional
Valve 25.2, the 3rd repairing check valve 25.3, the 4th repairing check valve 25.4 are to working connection and Power Recovery oil circuit fuel feeding.
When working connection and Power Recovery oil circuit reach scheduled pressure value, main oil pump 33 starts, from the oil-out of main oil pump 33
Hydraulic oil out drives tested hydraulic motor 69 to rotate by working connection bridge type return, and hydraulic oil is returned by working connection bridge-type again
Road returns to the oil inlet of main oil pump 33, forms closed cycle.
Tested hydraulic motor 69 drive the first reductor 67.2 and and then drive the second reductor 67.1 to rotate, second subtracts
Fast machine drive load hydraulic motor 64 is rotated, and hydraulic oil is reclaimed into motor 38 by Power Recovery bridge type return driving power, led to
Overpower reclaims the rigid attachment of motor 38 and main oil pump 33, realizes that main oil pump Partial Power driving power recovery motor 38 provides
Purpose, reach the purpose of Power Recovery.
Simultaneously can also be by adjusting the displacement size of Power Recovery motor 38, matching ratio adjusts the second proportional pressure control valve
27.2 set pressures, have the function that Power Recovery can be achieved can realize the proportional loading of test requirements document again.
If because leakage causes hydraulic oil to reduce, insufficient pressure in working connection and Power Recovery oil circuit, repairing road can be with
Repairing is to meet system operation needs in working connection and Power Recovery oil circuit.
Oil circuit is controlled by the bridge type return, can be to each in working connection bridge type return and Power Recovery bridge type return
The opening and closing of hydraulic control one-way valve is controlled, so as to control the flow direction of hydraulic oil.
In the hydraulic system of the present invention, pressure gauge and pressure sensor is distributed with each monitoring point respectively.
By foregoing detailed description as can be seen that the present invention can realize that the performance to hydraulic motor, life-span are tested,
Load is simulated using hydraulic motor is loaded, and Partial Power is carried out Power Recovery using Power Recovery oil circuit and is used to drive master
Oil pump, the waste of energy is avoided, there is the advantages of energy-saving and emission-reduction.
But those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to explanation originally
Invention, and be not used as limitation of the invention, as long as in the spirit of the present invention, to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (3)
- A kind of 1. hydraulic motor test stand, it is characterised in that：Including main oil pump, tested hydraulic motor, deceleration device, loading hydraulic pressure Motor, Power Recovery motor and working connection, Power Recovery oil circuit；The tested hydraulic motor, the deceleration device, the loading hydraulic motor rigid attachment successively；The Power Recovery horse Up to the main oil pump also rigid attachment；The working connection includes the main oil pump, working connection bridge type return and the tested hydraulic motor；The working connection bridge type return is by the first hydraulic control one-way valve, the second hydraulic control one-way valve, the 3rd hydraulic control one-way valve and the 4th Hydraulic control one-way valve concatenation is formed, and has working connection first segment between first hydraulic control one-way valve and second hydraulic control one-way valve Point, there is working connection section point, the 3rd hydraulic control between second hydraulic control one-way valve and the 3rd hydraulic control one-way valve There is the node of working connection the 3rd, the 4th hydraulic control one-way valve and described first between check valve and the 4th hydraulic control one-way valve There is working connection fourth node between hydraulic control one-way valve；The oil-out of the main oil pump is connected to the working connection first node of the working connection bridge type return, the working connection bridge-type The working connection section point in loop is connected to the oil inlet of the tested hydraulic motor, and the oil-out of the tested hydraulic motor connects It is connected to the working connection fourth node of the working connection bridge type return, the node of working connection the 3rd connection of the working connection bridge type return To the oil inlet of main oil pump；The Power Recovery oil circuit includes loading hydraulic motor, Power Recovery bridge type return and the Power Recovery horse Reach；The Power Recovery bridge type return is by the 5th hydraulic control one-way valve, the 6th hydraulic control one-way valve, the 7th hydraulic control one-way valve and Eight hydraulic control one-way valves concatenation is formed；There is recovery first segment between 5th hydraulic control one-way valve and the 6th hydraulic control one-way valve Point, there is recovery section point, the 7th hydraulic control list between the 6th hydraulic control one-way valve and the 7th hydraulic control one-way valve The 3rd node, the 8th hydraulic control one-way valve and the 5th hydraulic control are reclaimed to having between valve and the 8th hydraulic control one-way valve There is recovery fourth node between check valve；The oil-out of the loading hydraulic motor is connected to the recovery fourth node of the Power Recovery bridge type return, the power The node of recovery the 3rd of recovery bridge type return is connected to the oil inlet of Power Recovery motor, the oil-out of the Power Recovery motor The recovery first node of the Power Recovery bridge type return is connected, the recovery section point of the Power Recovery bridge type return connects again It is connected to the oil inlet of the loading hydraulic motor.
- 2. hydraulic motor test stand according to claim 1, it is characterised in that：First hydraulic control one-way valve, described Two hydraulic control one-way valves, the 3rd hydraulic control one-way valve, the 4th hydraulic control one-way valve, the 5th hydraulic control one-way valve, described Six hydraulic control one-way valves, the 7th hydraulic control one-way valve and the 8th hydraulic control one-way valve respectively have a two-position four-way electromagnetism Reversal valve controls.
- 3. hydraulic motor test stand according to claim 2, it is characterised in that：Also include control oil pump, controlling filter； The oil inlet of the control oil pump connects the main fuel tank, the oil-out connection control filtering of the control oil pump through ball valve Device, the controlling filter is through controlling check valve to connect the working connection bridge type return and the Power Recovery bridge type return respectively In each two-position four-way solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710624289.8A CN107401535B (en) | 2017-07-27 | 2017-07-27 | Hydraulic motor test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710624289.8A CN107401535B (en) | 2017-07-27 | 2017-07-27 | Hydraulic motor test bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107401535A true CN107401535A (en) | 2017-11-28 |
| CN107401535B CN107401535B (en) | 2023-05-05 |
Family
ID=60400953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710624289.8A Active CN107401535B (en) | 2017-07-27 | 2017-07-27 | Hydraulic motor test bed |
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| Country | Link |
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| CN (1) | CN107401535B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240372A (en) * | 2018-01-03 | 2018-07-03 | 广西柳工机械股份有限公司 | Gear closed loop load test system |
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| CN108240372A (en) * | 2018-01-03 | 2018-07-03 | 广西柳工机械股份有限公司 | Gear closed loop load test system |
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| CN107401535B (en) | 2023-05-05 |
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