CN104088857A - Hydraulic motor overspeed reliability test system - Google Patents
Hydraulic motor overspeed reliability test system Download PDFInfo
- Publication number
- CN104088857A CN104088857A CN201410324257.2A CN201410324257A CN104088857A CN 104088857 A CN104088857 A CN 104088857A CN 201410324257 A CN201410324257 A CN 201410324257A CN 104088857 A CN104088857 A CN 104088857A
- Authority
- CN
- China
- Prior art keywords
- oil
- motor
- hypervelocity
- test system
- hydraulic motor
- 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.)
- Granted
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic motor overspeed reliability test system. In the system, an oil suction port of a first variable pump and an oil suction port of a second variable pump are both connected with an oil tank, an oil discharge port of the first variable pump is connected with an oil inlet of a tested motor through a first oil inlet oil way, and an oil discharge port of the second variable pump is connected with an oil inlet of a loading motor through a second oil inlet oil way. An oil outlet of the tested motor is connected with the oil tank, an oil outlet of the loading motor is connected with the first oil inlet oil way through a feedback oil way, an a power shaft of the tested motor is in transmission connection with a power shaft of the loading motor; an oil return oil way leads to the oil tank, an oil inlet of a communication stop valve is connected with the feedback oil way, and an oil outlet of the communication stop valve is connected with the oil return oil way. Through the hydraulic motor overspeed reliability test system, the requirement for testing overspeed reliability can be met, quality problems of a hydraulic motor prone to occurring in a frequent overspeed environment can be easily exposed as soon as possible, the hydraulic motor overspeed reliability test system is simple in structure, low in cost, and capable of facilitating simulation tests, test efficiency can be effectively improved, and test cost can be effectively reduced.
Description
Technical field
The present invention relates to oil hydraulic motor technical field of measurement and test, particularly a kind of oil hydraulic motor hypervelocity reliability test system.
Background technique
Oil hydraulic motor is the executive component in Hydraulic Power Transmission System, hydraulicdriven core parts, be widely used in the every field such as machinery, lathe, boats and ships, military affairs, Aero-Space, oil, its reliability and performance directly affect and are determining the service behaviour of hydraulic system and complete machine, therefore, the test of oil hydraulic motor performance characteristics is just seemed to most important.
Whether the test of oil hydraulic motor is reclaimed and can be divided into direct loading and two kinds of load test systems of Power Recovery from energy, directly loading system simple in structure, add carried convenient accurately, be disturbed little, but energy consumption is high, be not suitable for high-power test, life test and oil hydraulic motor test in enormous quantities for a long time.Power Recovery loading system structure is complicated a little, cost is higher, but system heating is little, energy consumption is low, along with the progress of power recovery technology and the promotion of energy-conserving and environment-protective concept, the Power Recovery load mode especially oil hydraulic motor pilot system of hydraulic power recovery load mode more and more comes into one's own.
At present, common oil hydraulic motor pilot system, all for the combination property of testing hydraulic motor, lays particular emphasis on the isoparametric testing property of pressure reduction, volumetric efficiency, rotating speed and moment of torsion, and not only test function is various, complex structure, and construction cost is high; Although existing oil hydraulic motor pilot system test function is various, yet be still difficult to meet the test needs of some oil hydraulic motor that is applied to particular surroundings, thereby be difficult to expose this class oil hydraulic motor by the quality problems that in use occur in traditional performance test in early days.For example, rotating speed is as a traditional performance index of oil hydraulic motor, but when the pace of change of its rotating speed or rotating speed surpasses after specified value, just there will be hypervelocity phenomenon, existing oil hydraulic motor pilot system is difficult to adapt to the hypervelocity reliability testing requirement of this class oil hydraulic motor, and the reliability testing unrealistic that exceeds the speed limit under practical service environment.
For convenience of explanation, the hoist motor that is applied to dynamic compaction machinery of take is example, hoist motor is used for by being wrapped in the wire rope pulling hammer ram on elevator, in the course of the work, when hammer ram has been pounded behind ground, hoist motor upwards pulls wire rope (empty hook lifting), the rotating speed of hoist motor is substantially in no-load speed state (rotating speed is greatly about 2400rpm left and right), after wire rope is tightened, hoist motor starts upwards to lift hammer ram by wire rope, the rotating speed of hoist motor is substantially in promoting rotating speed state (rotating speed is greatly about 2200rpm left and right), when hammer ram is promoted to setting height, detacher (device breaking off relations for controlling hoist motor) is opened, hammer ram acceleration under the Action of Gravity Field of self lands to pound earthward, in this process (in the very short time), hoist motor is because inertia there will be moment hypervelocity (rotating speed is greatly about 2800rpm left and right), in dynamic compaction machinery working procedure, above-mentioned three step cycle are reciprocal.In this applied environment, the regular hypervelocity of hoist motor, may affect its working life, existing oil hydraulic motor pilot system is difficult to simulation for the actual conditions of the hoist motor under this environment, thereby is difficult to meet the hypervelocity reliability testing requirement of this hoist motor; If utilize dynamic compaction machinery to carry out the hypervelocity reliability testing of hoist motor in actual field, the test of single-motor just need to be wasted time and energy, the test of a plurality of motors of leisure opinion, thereby this mode not only efficiency is low, and cost is high, all extremely unrealistic for producer and client.
Therefore, how for above-mentioned deficiency and the defect of prior art, improving, to more adapt to the extensive use needs of oil hydraulic motor, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the present invention aims to provide a kind of oil hydraulic motor hypervelocity reliability test system, not only can simulation application the actual conditions of oil hydraulic motor under hypervelocity environment, meet the test needs of hypervelocity reliability, and simple in structure, with low cost, can effectively improve testing efficiency.
Particularly, this oil hydraulic motor hypervelocity reliability test system comprises fuel tank, the first variable displacement pump, the second variable displacement pump, tested motor, load motor, the first oil-feed oil circuit, the second oil-feed oil circuit, feedback oil circuit, oil return circuit and connection cut-off valve, wherein: the inlet port of the inlet port of described the first variable displacement pump and described the second variable displacement pump is all connected to described fuel tank, the oil drain out of described the first variable displacement pump is connected to the filler opening of described tested motor by described the first oil-feed oil circuit, the oil drain out of described the second variable displacement pump is connected to the filler opening of described loading motor by described the second oil-feed oil circuit, the oil outlet of described tested motor is connected to described fuel tank, and the oil outlet of described loading motor is connected to described the first oil-feed oil circuit by described feedback oil circuit, and the line shaft of the line shaft of described tested motor and described loading motor is in transmission connection, described oil return circuit leads to described fuel tank, and the filler opening of described connection cut-off valve is connected to described feedback oil circuit, and oil outlet is connected to described oil return circuit.
Further, described oil hydraulic motor hypervelocity reliability test system also comprises for driving the first motor of described the first variable displacement pump and for driving the second motor of described the second variable displacement pump, the rated pressure of described the second variable displacement pump is less than the rated pressure of described the first variable displacement pump.
Further, described oil hydraulic motor hypervelocity reliability test system also comprises scaffold and coupling, described scaffold comprises base plate and parallel perpendicular the first riser and the second riser on described base plate that be placed in, described tested motor is installed on described the first riser, described loading motor is installed on described the second riser, and the line shaft of described tested motor is connected by described coupling between described the first riser and described the second riser with the line shaft of described loading motor.
Further, described oil hydraulic motor hypervelocity reliability test system also comprises speed detector, described speed detector comprises the gear being installed on described coupling and the approach switch fixing with described scaffold, and described approach switch changes for the current number of teeth according to described gear the information that output characterizes the current rotating speed of tested motor.
Further, described oil hydraulic motor hypervelocity reliability test system also comprises relief valve, and the filler opening of described relief valve is connected to described the second oil-feed oil circuit, and flow-off is connected to fuel tank.
Further, described oil hydraulic motor hypervelocity reliability test system also comprises the first one-way valve of being arranged on described the first oil-feed oil circuit, is arranged at the second one-way valve on described the second oil-feed oil circuit and is arranged at the 3rd one-way valve on described feedback oil circuit.
Further, described oil hydraulic motor hypervelocity reliability test system also comprises radiator and/or the filter being arranged on described oil return circuit.
Further, described oil hydraulic motor hypervelocity reliability test system also comprises overflow mechanism, and described overflow mechanism comprises pilot operated compound relief valve and cartridge valve; The filler opening of described pilot operated compound relief valve is connected to described feedback oil circuit, and flow-off is connected to oil return circuit; The control port of described cartridge valve and the first hydraulic fluid port are connected to feedback oil circuit, and the second hydraulic fluid port is connected to oil return circuit.
Further, described oil hydraulic motor hypervelocity reliability test system also comprises orifice valve, and described orifice valve is arranged at the filler opening of described connection cut-off valve, on the oil circuit between the control port of the filler opening of described pilot operated compound relief valve, described cartridge valve and described feedback oil circuit.
Further, described connection cut-off valve is solenoid valve, described the first variable displacement pump and described the second variable displacement pump are automatically controlled variable displacement pump, described oil hydraulic motor hypervelocity reliability test system also comprises controller, the on off operating mode of described controller for controlling described the first variable displacement pump and described the second variable pump delivery and control described connection cut-off valve according to the rotating speed state of tested motor.
While adopting oil hydraulic motor hypervelocity reliability test system of the present invention, in test process, can adjust as required the state of the first variable displacement pump, the second variable pump delivery and connection cut-off valve, make the rotating speed generation respective change of tested motor, to simulate the actual applying working condition of tested motor, for example, the Test Application of take is example in the tested motor of dynamic compaction machinery, by adjusting the first variable displacement pump and the second variable pump delivery, can change rotating speed and the load of tested motor, coordinate again the state that is communicated with cut-off valve of adjusting, can make tested motor in no-load speed state, promote rotating speed state or moment overspeed condition, can simulate like this rotating speed and the load condition of tested motor when reality is used, the test environment that fully guarantees tested motor at whole test process is corresponding with actual conditions, thereby can meet the test request of tested motor hypervelocity reliability, contribute to expose as early as possible tested motor and under regular hypervelocity environment, be easy to the quality problems that occur, in addition, from the foregoing, compared with prior art, oil hydraulic motor hypervelocity reliability test system constituent elements of the present invention is few, simple in structure, with low cost, and is easy to simulation test, can effectively improve testing efficiency and reduce testing cost.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 forms schematic diagram for the principle of a kind of oil hydraulic motor hypervelocity reliability test system that the embodiment of the present invention provides.
Number in the figure explanation:
1 fuel tank
2 first motors
3 first variable displacement pumps
4 second motors
5 second variable displacement pumps
6 first one-way valves
7 second one-way valves
8 relief valves
9 tested motors
10 load motor
11 coupling
12 gears
13 approach switchs
14 pressure transducers
15 the 3rd one-way valves
16 pilot operated compound relief valves
17 are communicated with cut-off valve
18 radiators
19 orifice valves
20 cartridge valves
01 first oil-feed oil circuit
02 second oil-feed oil circuit
03 feedback oil circuit
04 oil return circuit
Embodiment
It should be pointed out that in this part to be only the explanation to specific embodiment to the description of concrete structure and description order, should not be considered as that protection scope of the present invention is had to any restriction.In addition,, under the situation of not conflicting, embodiment and the feature in embodiment in this part can combine mutually.
Please refer to Fig. 1, face elaborates to the embodiment of the present invention in connection with accompanying drawing.
As shown in Figure 1, this embodiment's oil hydraulic motor hypervelocity reliability test system can comprise fuel tank 1, the first motor 2, the first variable displacement pump 3, the second motor 4, the second variable displacement pump 5, tested motor 9, load motor 10, the first oil-feed oil circuit 01, the second oil-feed oil circuit 02, feedback oil circuit 03, oil return circuit 04, connection cut-off valve 17 and overflow mechanism.
Wherein, the inlet port of the inlet port of the first variable displacement pump 3 and the second variable displacement pump 5 is all connected to fuel tank 1, the oil drain out of the first variable displacement pump 3 is connected to the filler opening of tested motor 9 by the first oil-feed oil circuit 01, the oil drain out of the second variable displacement pump 5 is connected to the filler opening that loads motor 10 by the second oil-feed oil circuit 02.The oil outlet of tested motor 9 is connected to fuel tank, and the oil outlet that loads motor 10 is connected to the first oil-feed oil circuit 01 by feedback oil circuit 03, and the line shaft of tested motor 9 is in transmission connection with the line shaft that loads motor 10.
Oil return circuit 04 leads to fuel tank 1, and the filler opening that is communicated with cut-off valve 17 is connected to feedback oil circuit 03, and the oil outlet that is communicated with cut-off valve 17 is connected to oil return circuit 04.Overflow mechanism is arranged between feedback oil circuit 03 and oil return circuit 04, and the element of the preferably large latus rectum of overflow mechanism, high frequency sound, to guarantee that the release time is below predetermined value (as 50ms); For example, as shown in Figure 1, in the present embodiment, overflow mechanism preferably includes pilot operated compound relief valve 16 and cartridge valve 20, and the filler opening of pilot operated compound relief valve 16 is connected to feedback oil circuit 03, and the flow-off of pilot operated compound relief valve 16 is connected to oil return circuit 04; The first hydraulic fluid port of the control port of cartridge valve 20 (spring side hydraulic fluid port) and cartridge valve 20 is connected to feedback oil circuit 03, and the second hydraulic fluid port of cartridge valve is connected to oil return circuit 04.
The first motor 2 is for driving the first variable displacement pump 3, the second motor 4 is for driving the second variable displacement pump 5, preferably, the rated pressure of the second variable displacement pump 5 is less than the rated pressure of the first variable displacement pump 3, and the power performance of the first motor 2 and the second motor 4 adapts with the power performance of the first variable displacement pump 3 and the second variable displacement pump 5 respectively; In use, comparatively speaking, the first variable displacement pump 3 can provide small flow high pressure oil, and the second variable displacement pump 5 can provide large flow low pressure oil; In addition, the displacement control mode of the first variable displacement pump 3 and the second variable displacement pump 5 can adopt known arrangement, at this, no longer launches to describe.
The working procedure of the oil hydraulic motor hypervelocity reliability test system of above-described embodiment is described: for example below in conjunction with concrete scene, the hoist motor that this tested motor 9 is exclusively used in dynamic compaction machinery of take is example, when using above-mentioned oil hydraulic motor hypervelocity reliability test system to carry out the test of reliability hypervelocity to tested motor 9, need to simulate the actual applying working condition of hoist motor, could expose well tested motor 9 time the quality problems that may occur under perseverance hypervelocity environment; Description from the application's background parts, under actual conditions, hoist motor when empty hook is promoted to wire rope and tightens during this period of time in no-load speed state (rotating speed is greatly about 2400rpm left and right), while being promoted to setting height to hammer ram after wire rope is tightened during this period of time in promoting rotating speed state (rotating speed is greatly about 2200rpm left and right), and be opened into hammer ram at detacher, pound in this extremely short time of the face of landing in moment overspeed condition (rotating speed is greatly about 2800rpm left and right), and so move in circles according to above-mentioned three steps.Thereby, when utilizing the embodiment of the present invention to exceed the speed limit reliability testing to tested motor 9, should make the rotating speed state of tested motor 9 and load condition corresponding with rotating speed state and the load condition of hoist motor under actual conditions.Particularly, the first variable displacement pump 3 can be by the first oil-feed oil circuit 01 to tested motor 9 supply pressure oil, the second variable displacement pump 5 can be by the second oil-feed oil circuit 02 to loading motor 10 supply hydraulic fluids, and the hydraulic oil that loads motor 10 outputs is incorporated in the first oil-feed oil circuit 01 after feedback oil circuit 03, to realize the recovery of hydraulic power, the heating of minimizing system and energy consumption, in test process, the rotating speed state of can (by corresponding revolution speed sensing device) monitoring in real time tested motor 9, the state that is communicated with cut-off valve 17 by adjustment, can realize loading and the unloading of pressure, when being communicated with cut-off valve 17 in connected state, system is in unloaded state, when being communicated with cut-off valve 17 in off state, system is in loaded state, add by adjusting the discharge capacity of the first variable displacement pump 3 and the discharge capacity of the second variable displacement pump 5, can adjust rotating speed state and the load condition (corresponding to the state that loads motor 10) of tested motor 9, and then make tested motor 9 corresponding with rotating speed state and the load condition of hoist motor in actual conditions with load condition at the rotating speed state of whole test process, by moving in circles, can test the hypervelocity reliability of tested motor 9, for example, if simulate hoist motor lifting rotating speed state and moment overspeed condition, can make to be communicated with cut-off valve and to realize, load (to simulate, having compared with heavy load) in off state, and make the first variable displacement pump 3 outputs compared with the hydraulic oil of the larger pressure of small flow and make the second variable displacement pump 5 export the hydraulic oil of the less pressure of larger flow, can make so tested motor 9 in promoting rotating speed state and bearing larger load (corresponding in the actual loading in this stage with hoist motor), after continuing for some time the lifting rotating speed state retention time of hoist motor (during this period of time corresponding to), can continue to change the discharge capacity of the first variable displacement pump 3 and the second variable displacement pump 5, and make to be communicated with cut-off valve 17 in connected state to realize unloading (with simulation no-load state), owing to being communicated with the connection of cut-off valve 17, large latus rectum, the overflow mechanism of high frequency sound can make the rapid release of system (for example, below 50ms), tested like this motor 9 exceeds the speed limit moment under the effect in the unexpected off-load of load, thereby realize the simulation of moment overspeed condition.
From the foregoing, the oil hydraulic motor hypervelocity reliability test system of above-described embodiment can the oil hydraulic motor of simulation application under hypervelocity environment actual conditions, can meet the test needs of hypervelocity reliability, contribute to expose as early as possible oil hydraulic motor and under regular hypervelocity environment, be easy to the quality problems that occur; In addition, from the composition of above-described embodiment, describe and test process, compared with prior art, the oil hydraulic motor hypervelocity reliability test system constituent elements of above-described embodiment is less, simple in structure, with low cost, and be easy to simulation test, can effectively improve testing efficiency and reduce testing cost.
It should be noted that, in specific implementation process, the oil hydraulic motor of above-described embodiment hypervelocity reliability test system can also adopt following at least one optimal way:
One, in order to simulate better the torque demand (input of actual loading moment of torsion) of actual conditions, tested motor 9 and loading motor 10 can adopt back-to-back structural type, particularly, oil hydraulic motor hypervelocity reliability test system also comprises scaffold (scheming not shown) and coupling 11, wherein, scaffold comprises base plate and parallel perpendicular the first riser and the second riser on this base plate that be placed in, tested motor 9 is installed on the first riser, loading motor 10 is installed on the second riser, the line shaft of tested motor 9 is connected by this coupling 11 between the first riser and the second riser with the line shaft that loads motor 10, on this basis, in order effectively to reduce complexity and the cost of prior art medium speed measuring system, can a speed detector be set in form at the back to back structure of tested motor 9 and loading motor 10, this speed detector comprises the gear 12 being installed on coupling 11 and the approach switch 13 that fixes (being for example fixed on the first riser) with scaffold, the number of teeth that approach switch can scan gear 12 changes, to export the information that characterizes tested motor 9 or load motor 10 current rotating speeds (can corresponding to sweep frequency).
Two, for fear of the oil pressure on the second oil-feed oil circuit 02, because of excessive, affect corresponding hydraulic element, realize better hypervelocity reliability testing, corresponding relief valve 8 can be set on the second oil-feed oil circuit 02, particularly, the filler opening of relief valve 8 is connected to the second oil-feed oil circuit 02, and flow-off is connected to fuel tank.
Three, in order effectively to prevent anti-stream of hydraulic oil on the first oil-feed oil circuit 01, the second oil-feed oil circuit 02 and feedback oil circuit 03, realize better hypervelocity reliability testing, can on the first oil-feed oil circuit 01, the second oil-feed oil circuit 02 and feedback oil circuit 03, the first one-way valve 6, the second one-way valve 7 and the 3rd one-way valve 15 be set respectively.
Four, in order to play corresponding buffer function, avoid being communicated with cut-off valve 17 and overflow mechanism is subject to excessive hydraulic shock, realize better hypervelocity reliability testing, can be communicated with the filler opening of cut-off valve 17, on the oil circuit between the control port of the filler opening of pilot operated compound relief valve 16, cartridge valve 20 and feedback oil circuit 03, orifice valve 19 is being set.
Five, for assurance system can be tested for a long time, reduce heating and energy consumption, radiator 18 can be set on oil return circuit 04; Alternatively, filter (scheming not shown) can also be set as required on oil return circuit 04 to guarantee the clean of hydraulic oil in long-time test process.
It should be noted that, in above-described embodiment and at least one optimal way thereof, the overflow mechanism being arranged between feedback oil circuit 03 and oil return circuit 04 adopts the pilot operated compound relief valve 16 shown in Fig. 1 and cartridge valve 20 to realize, when being communicated with cut-off valve 17 in connected state, the pressure of the control port of cartridge valve 20 is close to 0, thereby make can communicate between its first hydraulic fluid port and the second hydraulic fluid port, to realize the fast pressure relief of system, in addition it is excessive and damage relevant hydraulic element that pilot operated compound relief valve 16 also can avoid feeding back the pressure of oil circuit 03 and the first oil-feed oil circuit 01 to a certain extent, but in other embodiments, be not limited to adopt the overflow mechanism shown in Fig. 1, also can adopt other to there is the element that larger latus rectum, higher-frequency ring, as long as can realize the fast pressure relief (be release speed can below predetermined value) of system.
It should be noted that, in above-mentioned various embodiment and at least one optimal way thereof, the first variable displacement pump 3 and the second variable displacement pump 5 adopt respectively the first motor 2 and the second motor 4 to drive, but in other embodiments, be not limited to this, the driving mode of the first variable displacement pump 3 and the second variable displacement pump 5 also can be referring to the relevant programme of prior art.
It should be noted that, in above-mentioned various embodiment and at least one optimal way thereof, by being communicated with cut-off valve 17, can realize loading and unloading, and can realize fast pressure relief by overflow mechanism, but in other embodiments, be not limited in this mode, for example, if be communicated with the needs that cut-off valve 17 can meet fast pressure relief, also can omit special-purpose pressure relief device.
It should be noted that, in above-mentioned various embodiment and at least one optimal way thereof, be communicated with cut-off valve 17 and there is the function that feedback oil circuit 03 is communicated with or is cut off with oil return circuit 04, during concrete enforcement, be communicated with cut-off valve and can adopt two position four-way valves (situation as shown in Figure 1, wherein two position four-way valves hydraulic fluid port is shut), two-position three-way valve or 2/2-way valve, as long as can realize, will feed back oil circuit 03 and be communicated with or cut off with oil return circuit 04, in addition, for the ease of carrying out centralized control, reduce time lag, improve response capability, be communicated with cut-off valve 17 and can adopt solenoid valve, correspondingly, the first variable displacement pump 3 and the second variable displacement pump 5 also can adopt automatically controlled variable displacement pump, oil hydraulic motor hypervelocity reliability test system can also comprise a controller like this, this controller can (can comprise current rotating speed and endurance according to the rotating speed state of current tested motor, current rotating speed for example can be issued controller by speed detector), related pressure information (can be issued controller by being arranged at the pressure transducer of each oil circuit, for example be arranged at the pressure transducer 14 on feedback oil circuit 03), and the needing etc. of test, control the discharge capacity of described the first variable displacement pump 3 and the second variable displacement pump 5 and control the on off operating mode that is communicated with cut-off valve 17, test process and actual conditions are adapted, during concrete enforcement, controller can adopt PLC (Programmable Logic Controller, programmable logic controller (PLC)) or relay, solenoid valve circuit etc. is built.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. oil hydraulic motor hypervelocity reliability test system, it is characterized in that, comprise fuel tank (1), the first variable displacement pump (3), the second variable displacement pump (5), tested motor (9), load motor (10), the first oil-feed oil circuit (01), the second oil-feed oil circuit (02), feedback oil circuit (03), oil return circuit (04) and be communicated with cut-off valve (17), wherein:
The inlet port of the inlet port of described the first variable displacement pump (3) and described the second variable displacement pump (5) is all connected to described fuel tank (1), the oil drain out of described the first variable displacement pump (3) is connected to the filler opening of described tested motor (9) by described the first oil-feed oil circuit (01), the oil drain out of described the second variable displacement pump (5) is connected to the filler opening of described loading motor (10) by described the second oil-feed oil circuit (02); The oil outlet of described tested motor (9) is connected to described fuel tank (1), the oil outlet of described loading motor (10) is connected to described the first oil-feed oil circuit (01) by described feedback oil circuit (03), and the line shaft of the line shaft of described tested motor (9) and described loading motor (10) is in transmission connection; Described oil return circuit (04) leads to described fuel tank (1), and the filler opening of described connection cut-off valve (17) is connected to described feedback oil circuit (03), and oil outlet is connected to described oil return circuit (04).
2. oil hydraulic motor as claimed in claim 1 hypervelocity reliability test system, it is characterized in that, described oil hydraulic motor hypervelocity reliability test system also comprises for driving first motor (2) of described the first variable displacement pump (3) and for driving second motor (4) of described the second variable displacement pump (5), the rated pressure of described the second variable displacement pump (5) is less than the rated pressure of described the first variable displacement pump (3).
3. oil hydraulic motor as claimed in claim 1 hypervelocity reliability test system, it is characterized in that, described oil hydraulic motor hypervelocity reliability test system also comprises scaffold and coupling (11), described scaffold comprises base plate and parallel perpendicular the first riser and the second riser on described base plate that be placed in, described tested motor (9) is installed on described the first riser, described loading motor (10) is installed on described the second riser, the line shaft of described tested motor (9) is connected by described coupling (11) between described the first riser and described the second riser with the line shaft of described loading motor (10).
4. oil hydraulic motor as above-mentioned in claim 3 hypervelocity reliability test system, it is characterized in that, described oil hydraulic motor hypervelocity reliability test system also comprises speed detector, described speed detector comprises the gear (12) being installed on described coupling (11) and the approach switch (13) fixing with described scaffold, and described approach switch (13) changes for the current number of teeth according to described gear (12) information that output characterizes the current rotating speed of tested motor (9).
5. oil hydraulic motor as claimed in claim 1 hypervelocity reliability test system, it is characterized in that, described oil hydraulic motor hypervelocity reliability test system also comprises relief valve (8), the filler opening of described relief valve (8) is connected to described the second oil-feed oil circuit (02), and flow-off is connected to fuel tank (1).
6. oil hydraulic motor as claimed in claim 1 hypervelocity reliability test system, it is characterized in that, described oil hydraulic motor hypervelocity reliability test system also comprises the first one-way valve (6) of being arranged on described the first oil-feed oil circuit (01), is arranged at the second one-way valve (7) on described the second oil-feed oil circuit (02) and is arranged at the 3rd one-way valve (15) on described feedback oil circuit (03).
7. oil hydraulic motor hypervelocity reliability test system as claimed in claim 1, is characterized in that, described oil hydraulic motor hypervelocity reliability test system also comprises radiator (18) and/or the filter being arranged on described oil return circuit (04).
8. the oil hydraulic motor as described in claim 1 to 7 any one hypervelocity reliability test system, it is characterized in that, described oil hydraulic motor hypervelocity reliability test system also comprises overflow mechanism, and described overflow mechanism comprises pilot operated compound relief valve (16) and cartridge valve (20); The filler opening of described pilot operated compound relief valve (16) is connected to described feedback oil circuit (03), and flow-off is connected to oil return circuit (04); The control port of described cartridge valve (20) and the first hydraulic fluid port are connected to feedback oil circuit (03), and the second hydraulic fluid port is connected to oil return circuit (04).
9. oil hydraulic motor as claimed in claim 7 hypervelocity reliability test system, it is characterized in that, described oil hydraulic motor hypervelocity reliability test system also comprises orifice valve (19), and described orifice valve (19) is arranged in the control port and the oil circuit between described feedback oil circuit (03) of the filler opening of described connection cut-off valve (17), the filler opening of described pilot operated compound relief valve (16), described cartridge valve (20).
10. the oil hydraulic motor as described in claim 1 to 7 any one hypervelocity reliability test system, it is characterized in that, described connection cut-off valve (17) is solenoid valve, described the first variable displacement pump (3) and described the second variable displacement pump (5) are automatically controlled variable displacement pump, described oil hydraulic motor hypervelocity reliability test system also comprises controller, and described controller is for controlling the discharge capacity of described the first variable displacement pump (3) and described the second variable displacement pump (5) and the on off operating mode of controlling described connection cut-off valve (17) according to the rotating speed state of tested motor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324257.2A CN104088857B (en) | 2014-07-09 | 2014-07-09 | Oil hydraulic motor hypervelocity reliability test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324257.2A CN104088857B (en) | 2014-07-09 | 2014-07-09 | Oil hydraulic motor hypervelocity reliability test system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104088857A true CN104088857A (en) | 2014-10-08 |
| CN104088857B CN104088857B (en) | 2016-03-23 |
Family
ID=51636600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410324257.2A Active CN104088857B (en) | 2014-07-09 | 2014-07-09 | Oil hydraulic motor hypervelocity reliability test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104088857B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015177A (en) * | 2016-08-05 | 2016-10-12 | 芜湖中意液压科技股份有限责任公司 | Durability test system with power recovery function for oscillating motor |
| CN106523445A (en) * | 2016-12-02 | 2017-03-22 | 贵州詹阳动力重工有限公司 | Control device and control method for vehicle |
| CN112610545A (en) * | 2020-12-30 | 2021-04-06 | 潍柴动力股份有限公司 | Hydraulic pulse system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4368638A (en) * | 1980-10-20 | 1983-01-18 | Deere & Company | Test stand for testing hydraulic devices |
| CN201714746U (en) * | 2010-07-07 | 2011-01-19 | 宁波市恒通液压科技有限公司 | Loading device of hydraulic motor test bench |
| CN202057491U (en) * | 2011-04-07 | 2011-11-30 | 佛山市顺德区中意液压有限公司 | Energy saving hydraulic motor performance testboard apparatus |
| CN202579458U (en) * | 2012-04-19 | 2012-12-05 | 上海纳博特斯克液压有限公司 | Device for testing traveling motor |
| CN103742484A (en) * | 2014-01-06 | 2014-04-23 | 索特传动设备有限公司 | Motor decelerator test system |
-
2014
- 2014-07-09 CN CN201410324257.2A patent/CN104088857B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4368638A (en) * | 1980-10-20 | 1983-01-18 | Deere & Company | Test stand for testing hydraulic devices |
| CN201714746U (en) * | 2010-07-07 | 2011-01-19 | 宁波市恒通液压科技有限公司 | Loading device of hydraulic motor test bench |
| CN202057491U (en) * | 2011-04-07 | 2011-11-30 | 佛山市顺德区中意液压有限公司 | Energy saving hydraulic motor performance testboard apparatus |
| CN202579458U (en) * | 2012-04-19 | 2012-12-05 | 上海纳博特斯克液压有限公司 | Device for testing traveling motor |
| CN103742484A (en) * | 2014-01-06 | 2014-04-23 | 索特传动设备有限公司 | Motor decelerator test system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015177A (en) * | 2016-08-05 | 2016-10-12 | 芜湖中意液压科技股份有限责任公司 | Durability test system with power recovery function for oscillating motor |
| CN106015177B (en) * | 2016-08-05 | 2018-03-13 | 芜湖中意液压科技股份有限责任公司 | Power Recovery tilt cylinder motor durability testing system |
| CN106523445A (en) * | 2016-12-02 | 2017-03-22 | 贵州詹阳动力重工有限公司 | Control device and control method for vehicle |
| CN106523445B (en) * | 2016-12-02 | 2018-06-19 | 贵州詹阳动力重工有限公司 | The control device and control method of a kind of vehicle |
| CN112610545A (en) * | 2020-12-30 | 2021-04-06 | 潍柴动力股份有限公司 | Hydraulic pulse system |
| CN112610545B (en) * | 2020-12-30 | 2023-01-24 | 潍柴动力股份有限公司 | Hydraulic pulse system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104088857B (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107269614B (en) | A kind of four-quadrant hydraulic loading system | |
| CN103994126B (en) | A kind of open type seawater hydraulic system test method under the simulated environment of deep-sea | |
| CN104514761B (en) | A kind of hydraulic pump that can be consumed energy with recovery test and motor test rig | |
| CN2892805Y (en) | Motor rotational speed memory hoisting braker control device | |
| CN103790874A (en) | Valveless hydraulic servo system and control method thereof | |
| CN105673596A (en) | Double hydraulic control system with automatic pressure-maintaining function and test method of double hydraulic control system | |
| CN104088857B (en) | Oil hydraulic motor hypervelocity reliability test system | |
| CN103742484A (en) | Motor decelerator test system | |
| CN101737380A (en) | Electro-hydraulic load simulator with low-pressure oil pump | |
| CN105784348A (en) | Construction machinery swivel joint plant test system and operation method thereof | |
| CN106704275A (en) | Hydraulic loading system of hydraulic pitch control test bed of wind generating set | |
| CN105782166A (en) | Energy-saving type hydraulic pump durability testing table with hydraulic analog loading | |
| CN104003305B (en) | Matching method and device of crane pump control system threshold power | |
| CN105841988B (en) | Lifting testing machine, lifting pilot system and the lifting test method loaded each other | |
| CN104564854A (en) | Multi-executer heavy load digital hydraulic loop based on high-voltage common rail cabin | |
| CN103775436A (en) | Modularly-parallel, multi-machine and energy-saving reliability testing device for hydraulic pumps and hydraulic motors | |
| CN204403006U (en) | A kind of can recovery test power consumption oil hydraulic pump and motor test rig | |
| CN104515681A (en) | Closed-type gearbox test device achieving loading through hydraulic system | |
| CN206972638U (en) | A kind of four-quadrant hydraulic loading system | |
| CN101943638B (en) | Reliability test method and device of gripping tool rotating body of forestry crane | |
| CN114483563A (en) | Four-quadrant hydraulic pump performance optimization test system and method | |
| CN204359528U (en) | A kind of can the enclosed drive axle proving installation of automatic imitation Vehicular turn | |
| CN207033889U (en) | Hydraulic motor test stand | |
| CN103759930A (en) | Transient test device and method of balance valve | |
| CN106593976A (en) | Testbed of hydraulic winches of drilling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |