CN103645046B - Performance test of central rotary joint detection method, device - Google Patents
Performance test of central rotary joint detection method, device Download PDFInfo
- Publication number
- CN103645046B CN103645046B CN201310732613.XA CN201310732613A CN103645046B CN 103645046 B CN103645046 B CN 103645046B CN 201310732613 A CN201310732613 A CN 201310732613A CN 103645046 B CN103645046 B CN 103645046B
- Authority
- CN
- China
- Prior art keywords
- rotary joint
- center
- formula
- pressure
- performance test
- 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.)
- Active
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention discloses a kind of performance test of central rotary joint detection method, comprise maximum working pressure (MWP) tentative module, described maximum working pressure (MWP) tentative module comprises the following steps: hydraulic control system exports with predetermined maximum working pressure (MWP), starts drive unit and drives the rotating member of center-rotary joint to rotate; The intake pressure P of center-rotary joint described in Real-time Obtaining
1with top hole pressure P
2; With described intake pressure P
1with top hole pressure P
2meeting the first formula is condition, obtains the judged result that maximum working pressure (MWP) is stable; Described first formula is as follows: P
1-P
2aMP.AMp.Amp lt; P
p, in formula, P
pfor default pressure drop threshold value.The present invention is detected by the permanance of different angles, obtains the reliability and stability of center-rotary joint.On this basis, the present invention additionally provides a kind of performance test of central rotary joint detection system simultaneously.
Description
Technical field
The present invention relates to the technical field of performance test of Hydraulic Elements, be specifically related to performance test of central rotary joint detection method, device.
Background technology
As everyone knows, center-rotary joint is used for greatly the relatively pivotal engineering machinery that gets on and off.Such as, excavator, excavator car load is divided into two parts of getting on the bus and get off, and lower vehicle hydraulic system and upper vehicle hydraulic system share a pumping plant, and the fluid needed for it needs to be connected by pipeline from getting on the bus; Can relatively rotate between the housing of center-rotary joint and mandrel, thus can guarantee that necessary connecting line does not produce any torsion, meet the function needs that the hydraulic system that gets on and off shares a pumping plant.
Obviously, for the relatively pivotal hydraulic control engineering machinery that gets on and off, as the center-rotary joint of core component, all kinds of parameter requests of its reliability and stability and reactor product performance are particularly important.Separate between the inner different oil duct of center-rotary joint, except the manufacturing accuracy of housing parts and arbor portions, the course of work rotates the reasons such as wearing and tearing affects its usability equally, and therefore, durability experiment is indispensable.In addition, key parameter when torsional moment during running is swivel coupling design, the real-time measurement of moment is very important equally.
For the endurancing of center-rotary joint, different production firm proposes corresponding solution.By the restriction of himself structure, prior art only can determine that the sealing of swivel coupling, temperature are on the intensity of part under the impact of driving torque and pressure effect mostly, practical manifestation in long time running process, cannot carry out thoroughly evaluating to center-rotary joint.Therefore, there is limitation.
In view of this, the performance test technology urgently looked for another way for existing center-rotary joint is optimized design, to carry out permanance detection from different angles, for guaranteeing that its functional reliability and stability provide reliable guarantee.
Summary of the invention
For above-mentioned defect, the technical matters that the present invention solves is, provides a kind of and is detected by the permanance of different angles for performance test of central rotary joint detection method, obtain the reliability and stability of center-rotary joint.On this basis, the present invention additionally provides a kind of performance test of central rotary joint detection system simultaneously.
Performance test of central rotary joint detection method provided by the invention, comprises maximum working pressure (MWP) tentative module, and described maximum working pressure (MWP) tentative module comprises the following steps:
Hydraulic control system exports with predetermined maximum working pressure (MWP), starts drive unit and drives the rotating member of center-rotary joint to rotate;
The intake pressure P of center-rotary joint described in Real-time Obtaining
1with top hole pressure P
2;
With described intake pressure P
1with top hole pressure P
2meeting the first formula is condition, obtains the judged result that maximum working pressure (MWP) is stable; Described first formula is as follows:
P
1-P
2<P
p, in formula, P
pfor default pressure drop threshold value.
Preferably, described default pressure drop threshold value P
pfor 0.05MPa-0.2MPa.
Preferably, also comprise rated flow tentative module, described rated flow tentative module comprises the following steps:
Hydraulic control system, with predetermined rated Output pressure, starts drive unit and drives the rotating member of center-rotary joint to rotate;
The inlet flow rate Q of center-rotary joint described in Real-time Obtaining
1with rate of discharge Q
2;
With described inlet flow rate Q
1with rate of discharge Q
2meeting the second formula is condition, obtains the judged result that rated flow is stable; Described second formula is as follows:
│ [(Q
1+ Q
2)/2-Q]/Q │ <Q
p, in formula, Q is rated flow, Q
pfor preset flow compares threshold value.
Preferably, described preset flow is than threshold value Q
pfor 1%-2%.
Preferably, also comprise the test of steering resistance square, described steering resistance square test comprises the following steps:
Hydraulic control system exports with predetermined maximum working pressure (MWP), starts drive unit and drives the rotating member of center-rotary joint to rotate;
The moment T of center-rotary joint described in Real-time Obtaining;
Meet the 3rd formula for condition with described moment T, obtain the judged result that steering resistance square is stable; Described 3rd formula is as follows:
T<T
p; Wherein, T
pfor default torque threshold.
Preferably, described drive unit drives the rotating member of center-rotary joint to rotate and reverse each schedule time length.
Preferably, described schedule time length is 2min-4min.
Performance test of central rotary joint detection system provided by the invention, comprising:
Drive unit, rotates for driving the rotating member of described center-rotary joint;
Hydraulic system, for setting up the test loop of described center-rotary joint;
Inlet oil temperature sensor, is arranged on the oil-feed branch road of described center-rotary joint; With
Torque speed sensor, between the output terminal being arranged on described center-rotary joint and described drive unit; Also comprise:
Inlet pressure sensor, is arranged on the oil-feed branch road of described center-rotary joint;
Outlet pressure sensor, is arranged on the fuel-displaced branch road of described center-rotary joint; With
Controller, export with predetermined maximum working pressure (MWP) in hydraulic system, under the state that drive unit drives the rotating member of center-rotary joint to rotate, described controller receives the intake pressure P1 of described inlet pressure sensor Real-time Collection and the top hole pressure P2 of described outlet pressure sensor Real-time Collection, and with described intake pressure P
1with top hole pressure P
2meeting the first formula is condition, obtains the judged result that maximum working pressure (MWP) is stable; Described first formula is as follows:
P
1-P
2<P
p, in formula, P
pfor default pressure drop threshold value.
Preferably, also comprise:
Inlet flow rate sensor, is arranged on the oil-feed branch road of described center-rotary joint; With
Outlet flow sensor, is arranged on the fuel-displaced branch road of described center-rotary joint;
In hydraulic system with predetermined rated Output pressure, under the state that drive unit drives the rotating member of center-rotary joint to rotate, described controller also receives the inlet flow rate Q of described inlet flow rate sensor Real-time Collection
1with the rate of discharge Q of described outlet flow sensor Real-time Collection
2, and with described inlet flow rate Q
1with rate of discharge Q
2meeting the second formula is condition, obtains the judged result that rated flow is stable; Described second formula is as follows:
│ [(Q
1+ Q
2)/2-Q]/Q │ <Q
p, in formula, Q is rated flow, Q
pfor preset flow compares threshold value.
Preferably, export with predetermined maximum working pressure (MWP) in hydraulic system, under the state that drive unit drives the rotating member of center-rotary joint to rotate, described controller also receives the moment of described torque speed sensor Real-time Collection, and meet the 3rd formula for condition with described moment T, obtain the judged result that steering resistance square is stable; Described 3rd formula is as follows:
T<T
p; Wherein, T
pfor default torque threshold.
Preferably, described controller is industrial computer, by the data message of data collecting instrument receiving sensor Real-time Obtaining, and can show judged result in graphical form.
Preferably, also comprise selector switch, and be configured to: automatically carry out the automatic mode of each test and manually carry out the manual mode of each test.
Preferably, also comprise swivel coupling frock, this frock comprises:
Supporting disk, is arranged on fixed rack by bearing, and for being fixedly connected with the rotating member of center-rotary joint to be measured, and the lower end of the output terminal of described drive unit and described supporting disk is in transmission connection;
Pull-fork assembly, is arranged on described fixed rack, for being fixedly connected with the non-rotating component of center-rotary joint to be measured; With
Bringing device is carried in side, for applying lateral force in the non-rotating component of center-rotary joint to be measured.
Preferably, described pull-fork assembly comprises:
Column, is fixedly installed on the described fixed rack of described supporting disk side; With
Shift fork, one end and described column-type spacing circumferentially, the other end is for being fixedly connected with the non-rotating component of center-rotary joint to be measured; And
Described side is carried bringing device and is arranged on described column.
Preferably, described side is carried bringing device and is comprised:
Elastomeric element, is fixedly installed on described column, and the described elastomeric element under trystate has precompressed deformation; With
Pushing block, is fixedly connected with the external part of described elastomeric element.
Based on existing performance test of central rotary joint detection method, this method has additional maximum working pressure (MWP) tentative module, particularly, hydraulic control system exports with predetermined maximum working pressure (MWP), along with drive unit drives center-rotary joint simulated condition to rotate, the intake pressure of Real-time Obtaining center-rotary joint and top hole pressure, and judge whether inlet outlet pressure differential is less than default pressure drop threshold value, if then determine the work that this center-rotary joint can be reliable and stable under maximum working pressure (MWP).Setting like this, the basis of pilot project has in the past been carried out the expansion of maximum working pressure (MWP) test, more fully can carry out the endurancing of center-rotary joint, and then the performance test of center-rotary joint is carried out from different angles, guarantee its functional reliability, stability to greatest extent.
In preferred version of the present invention, rated flow tentative module can also be set up, particularly, hydraulic control system with predetermined rated Output pressure, along with drive unit drives center-rotary joint simulated condition to rotate, the inlet flow rate Q of Real-time Obtaining center-rotary joint
1with rate of discharge Q
2, and judge whether import and export flow meets the second formula, if then determine that the rated flow of this center-rotary joint is reliable and stable; Wherein, the second formula is as follows: │ [(Q
1+ Q
2)/2-Q]/Q │ <Q
p, in formula, Q is rated flow, Q
pfor preset flow compares threshold value.Further preferably, steering resistance square tentative module can also be set up, particularly, hydraulic control system exports with predetermined maximum working pressure (MWP), along with drive unit drives center-rotary joint simulated condition to rotate, the moment T of Real-time Obtaining center-rotary joint, and judge whether this moment is less than default torque threshold, if then determine that the steering resistance square of this swivel coupling is reliable and stable.Thus, further comprehensively can carry out the endurancing of center-rotary joint, its pilot project covers wider; Meanwhile, rated flow tentative module and steering resistance square tentative module adopt the parameter of Real-time Obtaining, judge more accurate reliable.
In another preferred version of the present invention, adopt one to have the frock that bringing device is carried in side, can apply lateral force in the non-rotating component of center-rotary joint to be measured, the impact on its serviceability is carried in simplation examination side, can further improve accuracy of detection.
Accompanying drawing explanation
Fig. 1 is performance test of central rotary joint detection system one-piece construction schematic diagram described in present embodiment;
Fig. 2 is the practical set relation schematic diagram of this swivel coupling frock;
Fig. 3 is for carrying the assembly relation schematic diagram of bringing device in pull-fork assembly shown in Fig. 2 and side;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 shows the block scheme of maximum working pressure (MWP) tentative module described in present embodiment;
Fig. 6 shows the block scheme of rated flow tentative module described in present embodiment;
Fig. 7 shows the block scheme of steering resistance square test described in present embodiment.
In figure:
Motor 1, hydraulic system 2, inlet oil temperature sensor 3, torque speed sensor 4, center-rotary joint 5, reductor 6, spring coupling 7, inlet pressure sensor 8, outlet pressure sensor 9, controller 10, inlet flow rate sensor 11, outlet flow sensor 12, fixed rack 13, supporting disk 14, pull-fork assembly 15, column 151, shift fork 152, bringing device 16 is carried in side, elastomeric element 161, pushing block 162, screw 17, proximity switch 18, data collecting instrument 19, auxiliary stand 20.
Embodiment
Core of the present invention is that providing a kind of detects with the permanance by different angles for performance test of central rotary joint detection method, obtains the reliability and stability of center-rotary joint.Below in conjunction with specific embodiment and Figure of description, technical scheme provided by the invention is further detailed.
Refer to Fig. 1, this figure is performance test of central rotary joint detection system one-piece construction schematic diagram described in present embodiment.
This performance test of central rotary joint detection system comprises motor 1, hydraulic system 2, inlet oil temperature sensor 3 and torque speed sensor 4.Wherein, hydraulic system 2, for setting up the test loop of center-rotary joint 5 to be measured, specifically can adopt existing techniques in realizing, repeat no more herein; Inlet oil temperature sensor 3 is arranged on the oil-feed branch road of center-rotary joint 5 to be measured, gathers inlet oil temperature; Torque speed sensor 4 is arranged between center-rotary joint 5 to be measured and the output terminal of motor 1, gathers torque value.Wherein, motor 1 rotates for driving the rotating member (housing parts) of center-rotary joint 5 to be measured, as the drive unit providing original driving force, specifically realizes power transmission by reductor 6 and spring coupling 7.Obviously, the selection of drive unit is not limited to the motor 1 shown in figure, and here, drive unit 1 can also adopt hydraulic pump, as long as meet the function needs providing original driving force.
In addition, this system also comprises the inlet pressure sensor 8 being arranged on center-rotary joint 5 oil-feed branch road, the outlet pressure sensor 9 being arranged on the fuel-displaced branch road of center-rotary joint 5 and controller 10.Export with predetermined maximum working pressure (MWP) in hydraulic system 2, under the state that motor 1 drives the rotating member of center-rotary joint 5 to rotate, this controller 10 receives the intake pressure P of inlet pressure sensor 8 Real-time Collection
1with the top hole pressure P of outlet pressure sensor 9 Real-time Collection
2, and with intake pressure P
1with top hole pressure P
2meeting the first formula is condition, obtains the judged result that maximum working pressure (MWP) is stable; Described first formula is: P
1-P
2<P
p, in formula, P
pfor default pressure drop threshold value.
Except maximum working pressure (MWP) output test, rated flow test can also be carried out.Further as shown in the figure, this system also comprises the inlet flow rate sensor 11 be arranged on center-rotary joint 5 oil-feed branch road to be measured, to detect oil-feed flow; Meanwhile, the fuel-displaced branch road of center-rotary joint 5 to be measured arranges outlet flow sensor 12; In hydraulic system 2 with predetermined rated Output pressure, under the state that motor 1 drives the rotating member of center-rotary joint 5 to rotate, controller 10 also receives the inlet flow rate Q of inlet flow rate sensor 11 Real-time Collection
1with the rate of discharge Q of outlet flow sensor 12 Real-time Collection
2, and with inlet flow rate Q
1with rate of discharge Q
2meeting the second formula is condition, obtains the judged result that rated flow is stable; Described second formula is: │ [(Q
1+ Q
2)/2-Q]/Q │ <Q
p, in formula, Q is rated flow, Q
pfor preset flow compares threshold value.
In addition, export with predetermined maximum working pressure (MWP) in hydraulic system, under the state that motor 1 drives the rotating member of center-rotary joint 5 to rotate, controller 10 also receives the moment of torque speed sensor 4 Real-time Collection, and meet the 3rd formula for condition with described moment T, obtain the judged result that steering resistance square is stable; Described 3rd formula is: T<T
p; Wherein, T
pfor default torque threshold.
In order to better realize the Treatment Analysis of the real-time measurement of various performance parameter and image, chart, this controller 10 can be adopted as industrial computer, by the data message of data collecting instrument 19 receiving sensor Real-time Obtaining, and judged result can be shown in graphical form.Simultaneously, selector switch (not shown) can also be set, and be configured to: automatically carry out the automatic mode of each test and manually carry out the manual mode of each test, that is, when selector switch is in manual gear, system performs every test procedure according to manual command, and when selector switch is in automatic gear, system then carries out the step of every test automatically.More convenient to operate, more practical.
In process of the test, except setting up simulated pressure oil circuit, need simulation rotary actuation operation simultaneously.Here, the reliability of rotary actuation operation directly has influence on the precision of testing inspection.Based on this, can do to optimize further for the frock of swivel coupling to be measured.Please also refer to Fig. 2, this figure is the practical set relation schematic diagram of this swivel coupling frock.
Center-rotary joint 5 to be measured is arranged at fixed rack 13 by frock.This frock mainly comprises supporting disk 14, pull-fork assembly 15 and side and carries bringing device 16.Wherein, supporting disk 14 is arranged on fixed rack 13 by bearing, thus be fixedly connected with the rotating member of center-rotary joint 5 to be measured, auxiliary stand 20 can be adopted to be fixedly connected with supporting disk 14 bolt with rotating member respectively, under this state, the output terminal of motor 1 and the lower end of supporting disk 14 are in transmission connection, and can ensure the stability of rotation of center-rotary joint 5 to be measured; Wherein, pull-fork assembly 15 is arranged on fixed rack 13, and for being fixedly connected with the non-rotating component of center-rotary joint 5 to be measured, thus simulation center-rotary joint turns round duty relatively; Wherein, bringing device 16 is carried for applying lateral force in the non-rotating component of center-rotary joint 5 to be measured in side, can carry impact on its serviceability in simplation examination side thus, can further improve accuracy of detection.
Particularly, the column 151 of pull-fork assembly 15 is fixedly installed on the fixed rack 13 of supporting disk 14 side; It is spacing that one end of its shift fork 152 and this column 151 form circumference, the other end is for being fixedly connected with the non-rotating component of center-rotary joint 5 to be measured, specifically please composition graphs 3 and Fig. 4 in the lump, wherein, Fig. 3 is for carrying the assembly relation schematic diagram of bringing device 16 in pull-fork assembly 15 shown in Fig. 2 and side, and Fig. 4 is the vertical view of Fig. 3.This programme effectively make use of the top practical set threaded hole of center-rotary joint 5, and the other end of shift fork 152 is realized and being fixedly connected with of non-rotating component by bolt; Correspondingly, side is carried bringing device 16 and is arranged on column 151.
It should be noted that, " circumference spacing " here refers to, between shift fork 152 and column 151 the circumference of center-rotary joint 5 formed spacing.
In addition, can a screw 17 be set on supporting disk 14, relative set one proximity switch 18 on fixed rack 13, to obtain relevant informations such as rotating the number of turns.
In addition, present embodiment is carried bringing device 16 for the side of simulation side load and is provided that a kind of structure is reliable, a kind of implementation of good operability.Shown in 2 and Fig. 3, bringing device 16 is carried primarily of the elastomeric element 161 be fixedly installed on column 151 in this side, with the pushing block 162 to be fixedly connected with the external part of elastomeric element 161 is formed, and the elastomeric element under trystate has precompressed deformation, lateral force is applied on the non-rotating component of center-rotary joint 5 to be measured by pushing block 162, preferred employing nylon material makes pushing block 162, to avoid damaging center-rotary joint 5.Being appreciated that this elastomeric element 161 can be made for elastomeric material, can be also Compress Spring shown in figure, as long as can provide the function needs of lateral force after meeting pressurized deformation, all in the scope of the application's request protection.
Certainly, in order to improve the adaptability of this testing inspection system further, can be used in the testing inspection of different model center-rotary joint, bringing device 16 can be carried do further optimization by offside, such as, the laterally applying direction of power, one governor motion (not shown) is set between elastomeric element 161 and column 151, thus can according to the test needs of different center-rotary joint, relative position between adjustable elastic parts 161 and column 151, thus the precompressed deformation of adjustable elastomeric element 161 obtains the side force required for reality, thus more closing to reality operating mode, the use of more specification products can be met.
Obviously, this programme adopts motor vertical structure, adopts the connected mode of motor, torque speed sensor and frock simultaneously, connects directly, simply, transmission efficiency is high, and floor area is little.
Except premise central swivel coupling performance test detection system, present embodiment also provides a kind of performance test of central rotary joint detection method, and the method comprises maximum working pressure (MWP) tentative module.Specifically refer to Fig. 5, the figure shows the block scheme of maximum working pressure (MWP) tentative module described in present embodiment.
As shown in Figure 5, this maximum working pressure (MWP) tentative module comprises the following steps:
S51, hydraulic control system exports with predetermined maximum working pressure (MWP), starts drive unit and drives the rotating member of center-rotary joint 5 to rotate;
S52, the intake pressure P of Real-time Obtaining center-rotary joint 5
1with top hole pressure P
2;
S53, with intake pressure P
1with top hole pressure P
2meeting the first formula is condition, obtains the judged result that maximum working pressure (MWP) is stable; Described first formula is as follows:
P
1-P
2<P
p, in formula, P
pfor default pressure drop threshold value.Preferably, this default pressure drop threshold value P
pfor 0.05MPa-0.2MPa.
Such as, pass through computer-controlled hydraulic system, through the maximum working pressure (MWP) 48MPa of oil-feed loop supply center-rotary joint 5, open motor 1, make center-rotary joint 5 carry out gyration according to 15r/min, the each 2.5min of rotating, detected by inlet pressure sensor 8 and outlet pressure sensor 9 and record the force value of its import and export, and passing to data collecting instrument, being finally given to computing machine and data processing software, be converted into the forms such as chart, then carry out analyzing and processing.
In addition, this performance test of central rotary joint detection method also comprises rated flow tentative module, specifically refers to Fig. 6, the figure shows the block scheme of rated flow tentative module described in present embodiment.
As shown in Figure 6, this rated flow tentative module comprises the following steps:
S61, hydraulic control system, with predetermined rated Output pressure, starts drive unit and drives the rotating member of center-rotary joint 5 to rotate;
S62, the inlet flow rate Q of Real-time Obtaining center-rotary joint 5
1with rate of discharge Q
2;
S63, with inlet flow rate Q
1with rate of discharge Q
2meeting the second formula is condition, obtains the judged result that rated flow is stable; Described second formula is as follows:
│ [(Q
1+ Q
2)/2-Q]/Q │ <Q
p, in formula, Q is rated flow, Q
pfor preset flow compares threshold value.Preferably, this preset flow is than threshold value Q
pfor 1%-2%.
Such as, hydraulic control system, through the rated pressure of oil-feed loop supply center-rotary joint 5, after pressure stabilisation, open motor 1, make center-rotary joint 5 carry out gyration according to the rotating speed of 15r/min, each 2.5min of rotating, detected by inlet flow rate sensor 11 and outlet flow sensor 12 and record the flow value of its import and export, and pass to data collecting instrument, finally be given to computing machine and data processing software, be converted into the forms such as chart, then carry out analyzing and processing.
In addition, the performance test of central rotary joint detection method that present embodiment provides can also comprise steering resistance square tentative module, specifically refers to Fig. 7, the figure shows the block scheme of steering resistance square test described in present embodiment.
As shown in Figure 7, the test of this steering resistance square comprises the following steps:
S71, hydraulic control system exports with predetermined maximum working pressure (MWP), starts drive unit and drives the rotating member of center-rotary joint to rotate;
S72, the moment T of center-rotary joint described in Real-time Obtaining;
S73, meets the 3rd formula for condition with described moment T, obtains the judged result that steering resistance square is stable; Described 3rd formula is as follows:
T<T
p; Wherein, T
pfor default torque threshold.
Such as, maximum working pressure (MWP) is added to each interface, open motor 1, make center-rotary joint 5 carry out gyration according to the rotating speed of 15r/min, each 2.5min of rotating, measured by torque speed sensor 4 and record real-time moment when center-rotary joint 5 rotates, and pass to data collecting instrument, be finally given to computing machine and data processing software, be converted into the forms such as chart, carry out analyzing and processing again, be less than T with real-time moment
pfor default torque threshold 100NM is qualified.
Specifically carry out in every process of the test, drive unit drives the rotating member of center-rotary joint to rotate and reverse each schedule time length, and such as, reverse after rotating forward 2min-4min 2min-4min again, to guarantee that testing result obtains based under steady running state.
This programme can also carry out the pressurize test, the test of starting reactance square, impermeability test, endurancing etc. of the Static and dynamic of center-rotary joint, and its concrete Cleaning Principle can adopt existing techniques in realizing, repeats no more herein.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (15)
1. performance test of central rotary joint detection method, is characterized in that, comprises maximum working pressure (MWP) tentative module, and described maximum working pressure (MWP) tentative module comprises the following steps:
Hydraulic control system exports with predetermined maximum working pressure (MWP), starts drive unit and drives the rotating member of center-rotary joint to rotate;
The intake pressure P of center-rotary joint described in Real-time Obtaining
1with top hole pressure P
2;
With described intake pressure P
1with top hole pressure P
2meeting the first formula is condition, obtains the judged result that maximum working pressure (MWP) is stable; Described first formula is as follows:
P
1-P
2<P
p, in formula, P
pfor default pressure drop threshold value.
2. performance test of central rotary joint detection method according to claim 1, is characterized in that, described default pressure drop threshold value P
pfor 0.05MPa-0.2MPa.
3. performance test of central rotary joint detection method according to claim 1, is characterized in that, also comprises rated flow tentative module, and described rated flow tentative module comprises the following steps:
Hydraulic control system, with predetermined rated Output pressure, starts drive unit and drives the rotating member of center-rotary joint to rotate;
The inlet flow rate Q of center-rotary joint described in Real-time Obtaining
1with rate of discharge Q
2;
With described inlet flow rate Q
1with rate of discharge Q
2meeting the second formula is condition, obtains the judged result that rated flow is stable; Described second formula is as follows:
│ [(Q
1+ Q
2)/2-Q]/Q │ <Q
p, in formula, Q is rated flow, Q
pfor preset flow compares threshold value.
4. performance test of central rotary joint detection method according to claim 3, is characterized in that, described preset flow is than threshold value Q
pfor 1%-2%.
5. performance test of central rotary joint detection method according to claim 1, is characterized in that, also comprises the test of steering resistance square, and described steering resistance square test comprises the following steps:
Hydraulic control system exports with predetermined maximum working pressure (MWP), starts drive unit and drives the rotating member of center-rotary joint to rotate;
The moment T of center-rotary joint described in Real-time Obtaining;
Meet the 3rd formula for condition with described moment T, obtain the judged result that steering resistance square is stable; Described 3rd formula is as follows:
T<T
p; Wherein, T
pfor default torque threshold.
6. performance test of central rotary joint detection method according to any one of claim 1 to 5, is characterized in that, described drive unit drives the rotating member of center-rotary joint to rotate and reverse each schedule time length.
7. performance test of central rotary joint detection method according to claim 6, is characterized in that, described schedule time length is 2min-4min.
8. performance test of central rotary joint detection system, comprising:
Drive unit, rotates for driving the rotating member of described center-rotary joint;
Hydraulic system, for setting up the test loop of described center-rotary joint;
Inlet oil temperature sensor, is arranged on the oil-feed branch road of described center-rotary joint; With
Torque speed sensor, between the output terminal being arranged on described center-rotary joint and described drive unit; It is characterized in that, also comprise:
Inlet pressure sensor, is arranged on the oil-feed branch road of described center-rotary joint;
Outlet pressure sensor, is arranged on the fuel-displaced branch road of described center-rotary joint; With
Controller, export with predetermined maximum working pressure (MWP) in hydraulic system, under the state that drive unit drives the rotating member of center-rotary joint to rotate, described controller receives the intake pressure P1 of described inlet pressure sensor Real-time Collection and the top hole pressure P2 of described outlet pressure sensor Real-time Collection, and with described intake pressure P
1with top hole pressure P
2meeting the first formula is condition, obtains the judged result that maximum working pressure (MWP) is stable; Described first formula is as follows:
P
1-P
2<P
p, in formula, P
pfor default pressure drop threshold value.
9. performance test of central rotary joint detection system according to claim 8, is characterized in that, also comprise:
Inlet flow rate sensor, is arranged on the oil-feed branch road of described center-rotary joint; With
Outlet flow sensor, is arranged on the fuel-displaced branch road of described center-rotary joint;
In hydraulic system with predetermined rated Output pressure, under the state that drive unit drives the rotating member of center-rotary joint to rotate, described controller also receives the inlet flow rate Q of described inlet flow rate sensor Real-time Collection
1with the rate of discharge Q of described outlet flow sensor Real-time Collection
2, and with described inlet flow rate Q
1with rate of discharge Q
2meeting the second formula is condition, obtains the judged result that rated flow is stable; Described second formula is as follows:
│ [(Q
1+ Q
2)/2-Q]/Q │ <Q
p, in formula, Q is rated flow, Q
pfor preset flow compares threshold value.
10. performance test of central rotary joint detection system according to claim 8, it is characterized in that, export with predetermined maximum working pressure (MWP) in hydraulic system, under the state that drive unit drives the rotating member of center-rotary joint to rotate, described controller also receives the moment of described torque speed sensor Real-time Collection, and meet the 3rd formula for condition with described moment T, obtain the judged result that steering resistance square is stable; Described 3rd formula is as follows:
T<T
p; Wherein, T
pfor default torque threshold.
Performance test of central rotary joint detection system according to any one of 11. according to Claim 8 to 10, it is characterized in that, described controller is industrial computer, by the data message of data collecting instrument receiving sensor Real-time Obtaining, and shows judged result in graphical form.
12. performance test of central rotary joint detection systems according to claim 11, is characterized in that, also comprise selector switch, and be configured to: automatically carry out the automatic mode of each test and manually carry out the manual mode of each test.
13. performance test of central rotary joint detection systems according to claim 8, is characterized in that, also comprise swivel coupling frock, this frock comprises:
Supporting disk, is arranged on fixed rack by bearing, and for being fixedly connected with the rotating member of center-rotary joint to be measured, and the lower end of the output terminal of described drive unit and described supporting disk is in transmission connection;
Pull-fork assembly, is arranged on described fixed rack, for being fixedly connected with the non-rotating component of center-rotary joint to be measured; With
Bringing device is carried in side, for applying lateral force in the non-rotating component of center-rotary joint to be measured.
14. performance test of central rotary joint detection systems according to claim 13, it is characterized in that, described pull-fork assembly comprises:
Column, is fixedly installed on the described fixed rack of described supporting disk side; With
Shift fork, one end and described column-type spacing circumferentially, the other end is for being fixedly connected with the non-rotating component of center-rotary joint to be measured; And
Described side is carried bringing device and is arranged on described column.
15. performance test of central rotary joint detection systems according to claim 14, is characterized in that, described side is carried bringing device and comprised:
Elastomeric element, is fixedly installed on described column, and the described elastomeric element under trystate has precompressed deformation; With
Pushing block, is fixedly connected with the external part of described elastomeric element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732613.XA CN103645046B (en) | 2013-12-26 | 2013-12-26 | Performance test of central rotary joint detection method, device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732613.XA CN103645046B (en) | 2013-12-26 | 2013-12-26 | Performance test of central rotary joint detection method, device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103645046A CN103645046A (en) | 2014-03-19 |
| CN103645046B true CN103645046B (en) | 2016-04-27 |
Family
ID=50250298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310732613.XA Active CN103645046B (en) | 2013-12-26 | 2013-12-26 | Performance test of central rotary joint detection method, device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103645046B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165217A (en) * | 2017-05-17 | 2017-09-15 | 广西玉柴重工有限公司 | A kind of revolution detecting system of hydraulic crawler excavator |
| CN108692189A (en) * | 2018-05-29 | 2018-10-23 | 山东华鹏精机股份有限公司 | Rotary joint safety monitoring system and monitoring method |
| CN108426666A (en) * | 2018-06-08 | 2018-08-21 | 江阴市长龄机械制造有限公司 | Swivel joint torque detecting apparatus and its detection method |
| CN109029965A (en) * | 2018-09-03 | 2018-12-18 | 江苏腾旋科技股份有限公司 | Hydraulic system is used in a kind of test of center-rotary joint |
| CN109187209A (en) * | 2018-09-03 | 2019-01-11 | 江苏腾旋科技股份有限公司 | The testing stand of shield machine center-rotary joint |
| CN113125146A (en) * | 2019-12-27 | 2021-07-16 | 国家电投集团科学技术研究院有限公司 | Rotary joint test bed |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19952152A1 (en) * | 1999-03-01 | 2000-09-07 | Volkswagen Ag | Axle kinematics measurement stand for vehicle with wheel substitute has clamping plate may be fixed with respect to swivel about first joint axle relatively to basic plate |
| CN201757702U (en) * | 2010-06-29 | 2011-03-09 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Center swivel joint test tool |
| CN202305201U (en) * | 2011-11-01 | 2012-07-04 | 泸州金辉液压件有限责任公司 | Test rotary table for central swivel joints |
| CN202442861U (en) * | 2012-01-19 | 2012-09-19 | 山东德立信液压有限公司 | Swivel joint rotation test apparatus |
| CN202992476U (en) * | 2012-12-14 | 2013-06-12 | 四川森田消防装备制造有限公司 | Central rotary joint |
| KR101295320B1 (en) * | 2013-02-21 | 2013-08-09 | 국방과학연구소 | Valve test module and gravity servile test apparatus |
-
2013
- 2013-12-26 CN CN201310732613.XA patent/CN103645046B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19952152A1 (en) * | 1999-03-01 | 2000-09-07 | Volkswagen Ag | Axle kinematics measurement stand for vehicle with wheel substitute has clamping plate may be fixed with respect to swivel about first joint axle relatively to basic plate |
| CN201757702U (en) * | 2010-06-29 | 2011-03-09 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Center swivel joint test tool |
| CN202305201U (en) * | 2011-11-01 | 2012-07-04 | 泸州金辉液压件有限责任公司 | Test rotary table for central swivel joints |
| CN202442861U (en) * | 2012-01-19 | 2012-09-19 | 山东德立信液压有限公司 | Swivel joint rotation test apparatus |
| CN202992476U (en) * | 2012-12-14 | 2013-06-12 | 四川森田消防装备制造有限公司 | Central rotary joint |
| KR101295320B1 (en) * | 2013-02-21 | 2013-08-09 | 국방과학연구소 | Valve test module and gravity servile test apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 挖掘机中央回转接头型式检验方法研究;刁煜晨;《中国优秀硕士学位论文全文数据库·工程科技II辑》;20131215(第S2期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103645046A (en) | 2014-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103645046B (en) | Performance test of central rotary joint detection method, device | |
| CN203009454U (en) | Hydraulic comprehensive test bed | |
| CN203178069U (en) | Hydraulic torque converter assembly performance test platform | |
| CN103940595B (en) | Service life test bed for valve electric device | |
| CN209296310U (en) | It is a kind of for testing the pilot system of wind-powered electricity generation shaft coupling performance | |
| CN102353544A (en) | Automobile pedal operating mechanism assembly performance test board | |
| CN104181851A (en) | Automatic testing method and system of automatic speed changer | |
| CN105136486A (en) | Measurement and control bench of comprehensive properties of electric power steering system and measurement and control method | |
| CN201606352U (en) | Testing device for hydraulic motor | |
| CN103558023A (en) | Central swivel joint testing apparatus | |
| CN105784348A (en) | Construction machinery swivel joint plant test system and operation method thereof | |
| CN106124206A (en) | A kind of testing stand for detecting drive axle | |
| CN108956137A (en) | A kind of harmonic wave speed reducing machine performance detection mechanism | |
| CN204064633U (en) | A kind of electric hydraulic power-assisted steering pump real vehicle integrated test system | |
| CN203324008U (en) | Test stand for engineering machinery walking winding speed reducer | |
| CN102207431A (en) | System for simulating work environment of vehicular hydraulic power steering gear | |
| CN203630620U (en) | Hardware-in-loop test board used for electronic park brake system | |
| CN105092264A (en) | Tractor power gearshift power train test desk frame and test method thereof | |
| CN201993234U (en) | Diesel engine state detecting device based on energy consumption | |
| CN112304604A (en) | RV reducer's test device | |
| CN205748903U (en) | Ball screw assembly, running-in test system | |
| CN207197812U (en) | A kind of mechanical transmission contact (area) pattern testing stand | |
| CN201925150U (en) | Pump testing bench | |
| CN210774733U (en) | Durability test device of recirculating ball steering gear | |
| CN107941501B (en) | Reliability test system and method for accumulator charge valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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 |