CN116006527A - High-precision portable hydraulic control device and track sensor calibration system - Google Patents
High-precision portable hydraulic control device and track sensor calibration system Download PDFInfo
- Publication number
- CN116006527A CN116006527A CN202310092195.6A CN202310092195A CN116006527A CN 116006527 A CN116006527 A CN 116006527A CN 202310092195 A CN202310092195 A CN 202310092195A CN 116006527 A CN116006527 A CN 116006527A
- Authority
- CN
- China
- Prior art keywords
- oil
- track
- hydraulic
- working
- reversing valve
- 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
- 238000005086 pumping Methods 0.000 claims abstract description 38
- 239000003921 oil Substances 0.000 claims description 194
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000012208 gear oil Substances 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The application relates to a high-precision portable hydraulic control device and a track sensor calibration system, which are applied to the technical field of hydraulic pressure and the field of track safety monitoring, wherein the high-precision portable hydraulic control device comprises an oil tank (1), an oil pumping unit (2), a main oil way, a controller and at least one working unit (3); the oil pumping unit is connected with the oil tank and the main oil way to pump oil in the oil tank into the main oil way, each working link comprises an oil way branch connected with the main oil way and a hydraulic working piece (31) connected with the oil way branch, a standard force sensor (34) is arranged on the hydraulic working piece, and a proportional reversing valve (32) is arranged in the oil way branch; the oil pumping unit, the proportional reversing valve and the standard force sensor are electrically connected with a controller, and the controller is arranged to control the reversing and the flow area of the proportional reversing valve according to the measured value of the standard force sensor. The utility model has the advantages of portable, and can control multichannel oil circuit simultaneously.
Description
Technical Field
The application belongs to the technical field of hydraulic pressure, and particularly relates to a high-precision portable hydraulic control device; the invention further relates to a track sensor calibration system.
Background
In the running process of the motor car or the high-speed rail, the wheels of the motor car or the high-speed rail can apply a load on the vertical direction to the rail and can also generate impact on the horizontal direction to the rail, so that in order to monitor whether the motor car or the high-speed rail is abnormal in the running process, a sensor is arranged on the rail so as to measure the load on the vertical direction and the impact on the horizontal direction generated by the motor car or the high-speed rail.
The sensor may have inaccurate measurement after long-time use, and therefore, the sensor needs to be calibrated regularly by using a calibration system to ensure the accuracy of sensor measurement and the reliability of the track safety monitoring system.
The calibration system can apply a set standard force value to the steel rail, so that the performance state of the sensor can be obtained according to the difference between the measured value of the sensor and the set standard force value, and the calibration is carried out when the calibration is needed, the hydraulic device in the existing calibration system is often provided with a unit for pumping oil in groups so as to respectively and correspondingly apply the longitudinal load and the transverse load to the hydraulic working piece, and therefore accurate control of each load is ensured, and therefore, the whole hydraulic device is often larger and inconvenient to carry.
In view of this, it is desirable to provide a high-precision portable hydraulic control device.
Disclosure of Invention
In order to overcome the defects, the application provides a high-precision portable hydraulic control device and a track sensor calibration system.
The high-precision portable hydraulic control device provided by the first aspect of the application adopts the following technical scheme.
A high-precision portable hydraulic control device comprises an oil tank, an oil pumping unit, a main oil way, a controller and at least one working link; the oil pumping unit is connected with the oil tank and the main oil way to pump oil in the oil tank into the main oil way, each working link comprises an oil way branch connected with the main oil way and a hydraulic working piece connected with the oil way branch, a standard force sensor is arranged on the hydraulic working piece, and a proportional reversing valve is arranged in the oil way branch; the oil pumping unit, the proportional reversing valve and the standard force sensor are all electrically connected with the controller, and the controller is arranged to be capable of controlling reversing and flow area of the proportional reversing valve according to the measured value of the standard force sensor.
By adopting the technical scheme, each working link is connected on the same main pipeline and is supplied with oil by the same oil pumping unit, so that the number of the oil pumping devices can be reduced, the structure of the hydraulic device is simpler, the hydraulic device is small in size and light in weight and is convenient to carry, and each working link is provided with the proportional reversing valve, so that the proportion of the oil pressure in each working link can be realized through the adjustment of the flow area of the proportional reversing valve in each working link, and hydraulic working pieces in different working links can output different loads; in addition, through the regulation of the flow area, the speed of supplying oil to the hydraulic working piece can be changed, so that when the load output by the hydraulic working piece is about to reach a value required to be calibrated, oil can be slowly supplied to the hydraulic working piece, the output load of the hydraulic working piece can be slowly increased until a set value, the control precision of the output load of the hydraulic working piece can be improved, and the control of the proportional reversing valve and the oil pumping unit can be performed according to the value of the standard force sensor in the hydraulic working piece, so that the oil can be continuously supplied to the hydraulic working piece when the output load is reduced due to the conditions of oil seepage and the like of the hydraulic working piece, and the output load of the hydraulic working piece is stabilized in a set range, so that the dynamic regulation with high precision is realized.
Specifically, a proportional pressure reducing valve is further arranged in the oil path branch, the proportional pressure reducing valve is arranged between the main oil path and the proportional reversing valve, and the proportional pressure reducing valve is further connected with the oil tank.
Through adopting above-mentioned technical scheme, can adjust the ratio of the oil pressure in each work allies oneself with through the proportional relief valve to make the proportional reversing valve in each work allies oneself with can not influence the pressure in other work allies oneself with when adjusting.
Optionally, the oil pump is arranged at the bottom of one side of the oil tank, one end of the main oil path is connected with the upper part of the oil pumping unit, and the other end of the main oil path is sequentially connected with the oil path branches in each working unit; and a carrying handle is arranged on one side of the upper part of the oil tank, which is close to the oil pumping unit.
Through adopting above-mentioned technical scheme, can make the whole that forms by oil tank, pump oil unit, main oil circuit, proportion switching-over valve and proportion relief pressure valve be convenient for mention the transport.
Further, the oil pumping unit comprises a servo motor and a gear oil pump.
By adopting the technical scheme, the servo motor and the gear oil pump are compact in structure and relatively small in size, and the miniaturization and the light weight of the hydraulic device can be realized.
Furthermore, a one-way valve, an overflow valve and a pressure gauge are arranged in the main oil way, and the overflow valve is also connected with the oil tank.
Through adopting above-mentioned technical scheme, can prevent that main oil circuit pressure from being too high from causing the damage, and can prevent that the fluid backward flow in the main oil circuit from causing the damage of gear oil pump.
Further, the controller is configured to control the oil pump to start working and control the proportional reversing valve to supply oil to the hydraulic working piece in a maximum flow area when the pressure value measured by the standard force sensor is smaller than a first set value; when the pressure value measured by the standard force sensor rises to a first set value, controlling the proportional reversing valve to reduce the flow area for supplying oil to the hydraulic working piece; when the pressure value measured by the standard force sensor rises to a second set value, the control unit controls the servo motor of the pump unit, the proportional reversing valve and the proportional pressure reducing valve to work in a set working state so as to keep the pressure output by the hydraulic working piece at the second set value until all calibration actions are completed under the second set value; the calibration is then performed in the same manner at the other pressure set points in turn.
By adopting the technical scheme, when the load output by the hydraulic working piece is smaller than the first set value, the proportional reversing valve supplies oil to the hydraulic working piece in the largest flow area so as to ensure that the output load of the corresponding hydraulic working piece can be quickly improved to improve the calibration speed; when the load output by the hydraulic working piece is about to reach a set value, the flow area of the reversing valve is reduced, so that oil is slowly supplied to the hydraulic working piece, the output load is slowly increased until the set value is reached, the control precision of the output load of the hydraulic working piece can be improved, the reversing valve and the oil pumping unit can be controlled according to the value of the standard force sensor in the hydraulic working piece, and when the output load is reduced due to the oil seepage and other conditions of the hydraulic working piece, the oil is continuously supplied to the hydraulic working piece, so that the output load of the hydraulic working piece is stabilized in a set range, and high-precision dynamic adjustment is realized.
The track sensor calibration system provided in the second aspect of the present application adopts the following technical scheme.
A track sensor calibration system comprises a support frame assembly, a moving assembly, a connecting assembly and the high-precision portable hydraulic control device in the technical scheme; the support frame assembly comprises a track surface support and an inter-track support, the track surface support and the inter-track support are both provided with the working units, the hydraulic working pieces in the working units on the track surface support are longitudinal hydraulic cylinders, and the hydraulic working pieces in the working units on the inter-track support are transverse hydraulic cylinders; the moving assembly comprises a plurality of pairs of guide wheel units, and each guide unit wheel is arranged at the lower part of the supporting frame assembly; the connecting component is connected with the track surface bracket and the track.
By adopting the technical scheme, the rail sensor calibration system can apply force on the vertical direction and force on the horizontal direction to the steel rail in the rail so as to simulate the longitudinal pressure of the train to the rail and the force applied to the steel rail in the rail when the train swings left and right in the running process, and the rail pressure calibration system can move along the rail, so that the rail sensor calibration system can be directly pushed to any position on the rail for calibration after once assembly and molding, and the rail sensor calibration system is more convenient.
Specifically, the moving assembly comprises at least two pairs of guide wheel units which are arranged along the extending direction of the rail, an axle is arranged between the two guide wheel units which are oppositely arranged, the inter-rail support is erected between the two axles, and the transverse hydraulic cylinder is erected on the inter-rail support and is positioned between two rails of the rail, so that transverse load can be applied to the rails.
By adopting the technical scheme, the track sensor calibration system can stably move on the track.
Specifically, the track surface support is erected on two guide wheel units positioned on the same steel rail, the connecting assemblies are arranged at two ends of the track surface support, and the longitudinal hydraulic cylinder is arranged in the middle of the track surface support.
By adopting the technical scheme, the longitudinal hydraulic cylinder is convenient to apply longitudinal load to the steel rail.
Specifically, the connecting assembly comprises a pair of oppositely arranged clamping jaws, each clamping jaw is hinged with the rail surface support, and the clamping jaw can be hooked with the steel rail.
By adopting the technical scheme, the rail sensor calibration system can be conveniently connected to the rail in a limiting way or can move on the rail.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the working units are connected on the same main pipeline and oil supply is realized by the same oil pumping unit, so that the number of the oil pumping devices can be reduced, the structure of the hydraulic device is simpler, the volume is small, the weight is light, the transportation is convenient, and the proportional reversing valves are arranged in the working units, so that the proportion of the oil pressure in the working units can be realized through the adjustment of the flow area of the proportional reversing valves in the working units, the multi-way adjustment can be realized, and the hydraulic working pieces in different working units can output different loads; in addition, through the adjustment of the flow area, the speed of oil supply to the hydraulic working piece can be changed, so that when the load output by the hydraulic working piece is about to reach a set value, oil can be slowly supplied to the hydraulic working piece, the output load can be slowly increased until the set value, the control precision of the output load of the hydraulic working piece can be improved, and the control of the proportional reversing valve and the oil pumping unit can be performed according to the value of the standard force sensor in the hydraulic working piece, so that the oil supply to the hydraulic working piece can be continued when the output load drops due to the conditions of oil seepage and the like of the hydraulic working piece, and the output load of the hydraulic working piece is stabilized in a set range, so that the high-precision dynamic adjustment is realized.
Drawings
Fig. 1 is a schematic diagram of a high-precision portable hydraulic control device of the present application.
Fig. 2 is a schematic perspective view of an overall structure (hereinafter referred to as an overall structure) formed by an oil tank, an oil pumping unit (excluding a servo motor), and a proportional reversing valve and a proportional pressure reducing valve in the high-precision portable hydraulic control device of the present application.
Fig. 3 is a top view of the overall structure of fig. 2.
Fig. 4 isbase:Sub>A sectional view in the directionbase:Sub>A-base:Sub>A in fig. 3.
FIG. 5 is a schematic perspective view of the track sensor calibration system of the present application (excluding the overall structure of FIG. 2).
Reference numerals: 1. an oil tank; 11. a carrying handle; 2. an oil pumping unit; 21. a servo motor; 22. a gear oil pump; 3. a work linkage; 31. a hydraulic work piece; 32. a proportional reversing valve; 33. a proportional pressure reducing valve; 34. a standard force sensor; 41. a one-way valve; 42. an overflow valve; 43. a pressure gauge; 5. a support frame assembly; 51. a track surface mount; 52. an inter-track support; 6. a moving assembly; 61. a guide wheel unit; 62. a wheel axle; 7. a connection assembly; 71. a clamping jaw; 8. a track.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses a high-precision portable hydraulic control device.
Referring to fig. 1 and 2, a high-precision portable hydraulic control apparatus includes an oil tank 1, an oil pumping unit 2, a main oil passage, a controller, and at least one work unit 3; the oil pumping unit 2 is connected with the oil tank 1 and a main oil way to pump oil in the oil tank 1 into the main oil way, each working unit 3 comprises an oil way branch connected with the main oil way and a hydraulic working piece 31 connected with the oil way branch, a proportional reversing valve 32 is arranged in the oil way branch in each working unit 3, and a standard force sensor 34 is arranged on the hydraulic working piece 31; the oil pumping unit 2, the standard force sensor 34 and the proportional reversing valve 32 are electrically connected with a controller, and the controller is arranged to control the reversing and flow area of the proportional reversing valve 32 according to the measured value of the standard force sensor 34; because each work is connected on same root main oil way to realize the fuel feeding by same pump oil unit 2, thereby can reduce the setting quantity of pump oil device, make portable hydraulic control device of high accuracy volume and quality less portable transport.
Further, since the oil path branches of each working link 3 are all provided with the proportional reversing valve 32, the hydraulic pressure in each oil path branch can be regulated by controlling the flow area of the proportional reversing valve 32 in each working link 3, the larger the flow area of the proportional reversing valve 32 of the working link 3 is, the larger the oil pressure for supplying oil to the hydraulic working piece 31 in the working link 3 is, so that the hydraulic working piece 31 in the working link 3 can output larger load outwards, the output load of the hydraulic working piece 31 in each working link 3 is different, and different regulation of multiple branches is realized; and when the oil flows to the hydraulic working piece 31 through the proportional reversing valve 32, the oil supply speed to the hydraulic working piece 31 can be changed by adjusting the flow area of the proportional reversing valve 32, the oil supply speed is higher when the flow area of the proportional reversing valve 32 is larger, and the oil supply speed is lower when the flow area of the proportional reversing valve 32 is smaller, so that when the oil pressure in the hydraulic working piece 31 is about to reach a set value, the flow area of the proportional reversing valve 32 can be reduced, the oil pressure in the hydraulic working piece 31 is slowly increased, and the high-precision control of the oil pressure in the hydraulic working piece 31 can be conveniently realized, namely the high-precision control of the output load of the hydraulic working piece 31 can be realized.
Further, in the above-mentioned scheme that only one proportional reversing valve 32 is disposed on the branch line of each working link 3, if the flow area of the proportional reversing valve 32 in one working link 3 is adjusted, in order to ensure that the proportion of the oil pressure allocated to the hydraulic working piece 31 in each working link 3 is unchanged, the flow area of the proportional reversing valve 32 in the other working link 3 needs to be correspondingly adjusted, which occurs when the hydraulic working piece 31 in one working link 3 is about to reach the required oil pressure, and the flow area of the corresponding proportional reversing valve 32 is reduced, in order to ensure that the proportion of the oil pressure allocated to the hydraulic working piece 31 in each working link 3 is unchanged, the flow area of the proportional reversing valve 32 in the other working link 3 needs to be correspondingly reduced, the operation is cumbersome, and the speed of the hydraulic working piece 31 in the other working link 3 is reduced, and if the oil pressure in the hydraulic working piece 31 in the other working link 3 still does not reach the required oil pressure, the required oil pressure of the working piece 31 in the other working link 3 can reach the required oil pressure, and the required oil pressure can reach the required loading efficiency.
Therefore, referring to fig. 1 and 2, in the high-precision portable hydraulic control device of the present application, it is also necessary to provide a proportional pressure reducing valve 33 in each oil passage branch, the proportional pressure reducing valve 33 is provided between the main oil passage and the proportional direction changing valve 32, and the proportional pressure reducing valve 33 is also connected to the oil tank 1, so that the oil pressure supplied to each hydraulic working member 31 can be adjusted by adjusting the flow area of the proportional pressure reducing valve 33 in each oil passage branch, so that when the flow area of the proportional direction changing valve 32 itself is changed, excess hydraulic oil overflows from the proportional pressure reducing valve 33 into the oil tank 1 without affecting the oil pressure in the other working lines 3, so that the proportional direction changing valve 32 in each working line 3 can be independently adjusted.
Further, referring to fig. 3 and 4, in the high-precision portable hydraulic control apparatus of the present application, an oil pump may be provided at the bottom of one side of the oil tank 1, one end of a main oil passage is connected to the upper portion of the oil pumping unit 2, the other end of the main oil passage is sequentially connected to the oil passage branches in each working unit 3, and the proportional pressure reducing valve 33 and the proportional direction valve 32 in each oil passage branch are sequentially connected together, so that the oil tank 1, the oil pumping unit 2, the main oil passage, and the proportional direction valve 32 and the proportional pressure reducing valve 33 form an integral structure; in particular, the oil pumping unit 2 includes a servo motor 21 and a gear oil pump 22, and the servo motor 21 and the gear oil pump 22 are compact in structure and relatively small in size, so that the overall structure is small in size and light in weight; in addition, a carrying handle 11 is disposed on one side of the upper portion of the oil tank 1 near the oil pumping unit 2, so as to facilitate carrying the whole, and it is understood that connectors on the proportional pressure reducing valve 33 and the proportional reversing valve 32 for connection with pipelines can be quick connectors, so that connection of oil paths can be facilitated, and installation and detachment of the high-precision portable hydraulic control device can be facilitated.
Further, referring to fig. 1, in the high-precision portable hydraulic control device of the present application, a check valve 41, an overflow valve 42 and a pressure gauge 43 should be further provided in the main oil path, wherein the overflow valve 42 is connected with the oil tank 1, the check valve 41 can prevent the damage of the gear oil pump 22 caused by the oil backflow in the main oil path, the pressure gauge 43 can monitor the oil pressure in the main oil path, and the overflow valve 42 can overflow when the oil pressure in the main oil path exceeds a set value, thereby playing the role of protecting the main oil path.
Further, in the high-precision portable hydraulic control device of the present application, the standard force sensor 34 is installed on the hydraulic working member 31, and the controller is set to control the oil pumping unit 2 to start working when the pressure value measured by the standard force sensor 34 is smaller than the first set value, and control the proportional reversing valve 32 to supply oil to the hydraulic working member 31 with the maximum flow area so that the hydraulic working member 31 can quickly reach the required oil pressure to output the set load outwards, taking the load of 3 tons required to be output by the hydraulic working member 31 as an example, the first set value can be set to 2.8 tons, and the second set value can be set to 3±0.003 tons; when the pressure value measured by the standard force sensor 34 rises to a first set value (2.8 tons), the proportional reversing valve 32 is controlled to reduce the flow area for supplying oil to the hydraulic working piece 31, so that the rising speed of the oil pressure in the hydraulic working piece 31 is slowed down, and the accurate control of the oil pressure is convenient to realize; when the pressure value measured by the standard force sensor 34 rises to a second set value (3+ -0.003 ton), the proportional reversing valve 32 is controlled to stop the oil supply to the hydraulic working member 31, and the oil pumping unit 2 is controlled to stop pumping oil; in addition, when the output load is reduced (e.g. lower than 2.997 tons) due to oil leakage or other components in the hydraulic working member 31 or the oil path, the standard force sensor 34 can measure that the oil pressure in the hydraulic working member 31 is lower than the second set value, and the controller can control the oil pump unit 2 to start working and adjust the proportional reversing valve 32 to supply oil to the hydraulic working member 31 with a smaller flow area, so as to raise the oil pressure in the hydraulic working member 31 to the second set value, and maintain dynamic stability and high-precision adjustment of the oil pressure in the hydraulic working member 31.
The embodiment of the application also discloses a track sensor calibration system.
Referring to fig. 1 and 2, a track sensor calibration system includes a support frame assembly 5, a moving assembly 6, a connecting assembly 7, and a high-precision portable hydraulic control device mentioned in the above technical solution; the support frame assembly 5 comprises a track surface support 51 and an inter-track support 52, the track surface support 51 and the inter-track support 52 are both provided with a working link 3, the hydraulic working piece 31 in the working link 3 on the track surface support 51 is a longitudinal hydraulic cylinder, and the hydraulic working piece 31 in the working link 3 on the inter-track support 52 is a transverse hydraulic cylinder; the moving assembly 6 comprises a plurality of pairs of guide wheel units 61, each guide wheel unit 61 is arranged at the lower part of the supporting frame assembly 5, the connecting assembly 7 is connected with the track surface bracket 51 and the track 8, the track sensor calibration system can apply force in the vertical direction to the steel rail in the track 8 through the longitudinal hydraulic cylinder, and apply force in the horizontal direction to the steel rail in the track 8 through the transverse hydraulic cylinder so as to simulate the longitudinal pressure of the train on the track 8 and the force applied to the steel rail in the track 8 when the train swings left and right in the running process, and the track 8 pressure calibration system can realize movement along the track 8 through the moving assembly 6, so that the track sensor calibration system can be directly pushed to any position on the track 8 for calibration after one-time assembly molding, and the track sensor calibration system is more convenient.
Further, referring to fig. 1 and 2, in the track sensor calibration system of the present application, the moving assembly 6 may be configured to include at least two pairs of guide wheel units 61 disposed along the extending direction of the track 8, an axle 62 is disposed between two guide wheel units 61 disposed opposite to each other, the inter-track support 52 is erected between two axles 62, and a transverse hydraulic cylinder is erected on the inter-track support 52 and is connected with the proportional reversing valve 32 and the proportional pressure reducing valve 33 of the corresponding working unit 3 between two rails of the track 8, so as to apply a set transverse load to the rails for calibration, and after the calibration of the current position is completed, the moving assembly can be directly pushed to the position to be calibrated next, so that the disassembly and transportation of the device are not required, and the system is more convenient and efficient.
Further, referring to fig. 5, in the track sensor calibration system of the present application, the track surface brackets 51 are erected on two guide wheel units 61 on the same rail, both ends of the track surface brackets 51 are provided with connection assemblies 7 for connection with the rail, and a longitudinal hydraulic cylinder is provided in the middle of the track surface brackets 51 to apply load to the track surface of the rail after the track surface brackets 51 are connected with the rail through the connection assemblies 7; specifically, the connection assembly 7 may be configured to include a pair of oppositely disposed clamping jaws 71, each clamping jaw 71 being hinged to the rail face support 51, and the clamping jaws 71 being capable of being hooked to the bottom of the rail, such that when the clamping jaws 71 are hooked to the bottom of the rail, the spacing between the rail face support 51 and the rail support is constrained, such that when a load is applied to the rail by the longitudinal hydraulic cylinder, the rail face support 51 will press the longitudinal hydraulic cylinder between the rail face support 51 and the rail 8, so as to ensure that the load applied to the rail by the longitudinal hydraulic cylinder can be substantially greater than the weight of the rail face support 51, thereby enabling the desired load to be achieved; and the form of articulated clamping jaw 71 can realize the connection and loosen with the rail through the rotation about clamping jaw 71, is convenient for realize with track sensor calibration system spacing connection on track 8 or remove on track 8.
The implementation principle of the high-precision portable hydraulic control device provided by the embodiment of the application is as follows: each working link 3 is connected on the same main pipeline and is supplied with oil by the same oil pumping unit 2, so that the set number of oil pumping devices can be reduced, the structure of the hydraulic device is simpler, the volume is small, the weight is light, and the hydraulic device is convenient to carry.
The proportional pressure reducing valve 33 and the proportional reversing valve 32 are arranged in each oil path branch, the proportional pressure reducing valve 33 is arranged between the main oil path and the proportional reversing valve 32, and the proportional pressure reducing valve 33 is also connected with the oil tank 1, so that the oil pressure supplied to each hydraulic working piece 31 can be adjusted by adjusting the flow area of the proportional pressure reducing valve 33 in each oil path branch, and when the flow area of the proportional reversing valve 32 is changed, excessive hydraulic oil can overflow from the proportional pressure reducing valve 33 into the oil tank 1, the oil pressure in other working lines 3 is not influenced, and the proportional reversing valve 32 in each working line 3 can be independently adjusted, namely, the independent adjustment of each oil path can be realized.
In addition, by adjusting the flow area of the comparison-type reversing valve 32, the speed of supplying oil to the hydraulic working member 31 can be changed, so that when the load output by the hydraulic working member 31 is about to reach a set value, oil can be slowly supplied to the hydraulic working member 31, so that the output load can be slowly increased until the set value, thereby improving the control accuracy of the output load of the hydraulic working member 31, and the comparison-type reversing valve 32 and the oil pumping unit 2 can be controlled according to the value of the standard force sensor 34 in the hydraulic working member 31, so that the oil can be continuously supplied to the hydraulic working member 31 when the output load is reduced due to the occurrence of oil seepage and the like of the hydraulic working member 31, so that the output load of the hydraulic working member 31 is stabilized in a set range, and the high-accuracy dynamic adjustment can be realized.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The high-precision portable hydraulic control device is characterized by comprising an oil tank (1), an oil pumping unit (2), a main oil way, a controller and at least one working link (3); the oil pumping unit (2) is connected with the oil tank (1) and the main oil way to pump the oil in the oil tank (1) into the main oil way, each working link (3) comprises an oil way branch connected with the main oil way and a hydraulic working piece (31) connected with the oil way branch, a standard force sensor (34) is arranged on the hydraulic working piece (31), and a proportional reversing valve (32) is arranged in the oil way branch; the oil pumping unit (2), the proportional reversing valve (32) and the standard force sensor (34) are electrically connected with the controller, and the controller is arranged to control reversing and flow area of the proportional reversing valve (32) according to the measured value of the standard force sensor (34).
2. The high-precision portable hydraulic control device according to claim 1, wherein: the oil way branch is also provided with a proportional pressure reducing valve (33), the proportional pressure reducing valve (33) is arranged between the main oil way and the proportional reversing valve (32), and the proportional pressure reducing valve (33) is also connected with the oil tank (1).
3. The high-precision portable hydraulic control device according to claim 2, wherein: the oil pump (2) is arranged at the bottom of one side of the oil tank (1), one end of the main oil way is connected with the upper part of the oil pumping unit (2), and the other end of the main oil way is connected with the oil way branch circuits in each working link (3); and a carrying handle (11) is arranged on one side of the upper part of the oil tank (1) close to the oil pumping unit (2).
4. A high precision portable hydraulic control apparatus as claimed in claim 3, wherein: the oil pumping unit (2) comprises a servo motor (21) and a gear oil pump (22).
5. The high-precision portable hydraulic control device according to claim 4, wherein: a one-way valve (41), an overflow valve (42) and a pressure gauge (43) are arranged in the main oil way, and the overflow valve (42) is also connected with the oil tank (1).
6. The high-precision portable hydraulic control device according to claim 5, wherein: the controller is arranged to control the oil pump (2) to start working and control the proportional reversing valve (32) to supply oil to the hydraulic working piece (31) in the largest flow area when the standard force value measured by the standard force sensor (34) is smaller than a first set value; when the pressure value measured by the standard force sensor (34) rises to a first set value, controlling the proportional reversing valve (32) to reduce the flow area for supplying oil to the hydraulic working piece (31); when the pressure value measured by the standard force sensor (34) rises to a second set value, the control unit controls the servo motor (21), the proportional reversing valve (32) and the proportional pressure reducing valve (33) of the pump unit (2) to work in a set working state so as to keep the pressure output by the hydraulic working piece (31) at the second set value until all calibration actions are completed under the second set value; the calibration is then performed in the same manner at the other pressure set points in turn.
7. A track sensor calibration system is characterized in that: comprising a support frame assembly (5), a movement assembly (6), a connection assembly (7) and a high precision portable hydraulic control device according to any one of claims 1 to 6; the support frame assembly (5) comprises a track surface support (51) and an inter-track support (52), the track surface support (51) and the inter-track support (52) are both provided with the working units (3), the hydraulic working units (31) in the working units (3) on the track surface support (51) are longitudinal hydraulic cylinders, and the hydraulic working units (31) in the working units (3) on the inter-track support (52) are transverse hydraulic cylinders; the moving assembly (6) comprises a plurality of pairs of guide wheel units (61), and each guide wheel unit (61) is arranged at the lower part of the supporting frame assembly (5); the connecting assembly (7) is connected with the track surface bracket (51) and the track (8).
8. The track sensor calibration system of claim 7, wherein: the moving assembly (6) comprises at least two pairs of guide wheel units (61) which are arranged along the extending direction of the track (8), an axle (62) is arranged between the two guide wheel units (61) which are oppositely arranged, the inter-track support (52) is erected between the two axles (62), and the transverse hydraulic cylinder is erected on the inter-track support (52) and is positioned between two steel rails of the track (8) so as to apply transverse load to the steel rails.
9. The track sensor calibration system of claim 8, wherein: the rail surface support (51) is erected on two guide wheel units (61) positioned on the same steel rail, the connecting assemblies (7) are arranged at two ends of the rail surface support (51), and the longitudinal hydraulic cylinder is arranged in the middle of the rail surface support (51).
10. The track sensor calibration system of claim 9, wherein: the connecting assembly (7) comprises a pair of oppositely arranged clamping jaws (71), each clamping jaw (71) is hinged with the track surface bracket (51), and the clamping jaws (71) can be hooked with the steel rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310092195.6A CN116006527B (en) | 2023-02-09 | 2023-02-09 | High-precision portable hydraulic control device and track sensor calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310092195.6A CN116006527B (en) | 2023-02-09 | 2023-02-09 | High-precision portable hydraulic control device and track sensor calibration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116006527A true CN116006527A (en) | 2023-04-25 |
| CN116006527B CN116006527B (en) | 2024-01-30 |
Family
ID=86029963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310092195.6A Active CN116006527B (en) | 2023-02-09 | 2023-02-09 | High-precision portable hydraulic control device and track sensor calibration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116006527B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203743139U (en) * | 2014-03-11 | 2014-07-30 | 山河智能装备股份有限公司 | Multi-cylinder synchronous electrohydraulic control system under load varying condition |
| CN207454420U (en) * | 2017-10-27 | 2018-06-05 | 华德起重机（天津）股份有限公司 | A kind of novel hydraulic caliberating device |
| CN208350198U (en) * | 2018-04-28 | 2019-01-08 | 山东金钟科技集团股份有限公司 | A kind of large-tonnage rail weighbridge test calibration equipment |
| CN109374198A (en) * | 2018-08-23 | 2019-02-22 | 苏州集成校准检测认证有限公司 | Wheel track dynamic force ground test calibration system and method |
| DE102020206343A1 (en) * | 2020-05-20 | 2021-11-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | Procedure for calibrating an electro-proportional adjustable proportional valve |
-
2023
- 2023-02-09 CN CN202310092195.6A patent/CN116006527B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203743139U (en) * | 2014-03-11 | 2014-07-30 | 山河智能装备股份有限公司 | Multi-cylinder synchronous electrohydraulic control system under load varying condition |
| CN207454420U (en) * | 2017-10-27 | 2018-06-05 | 华德起重机（天津）股份有限公司 | A kind of novel hydraulic caliberating device |
| CN208350198U (en) * | 2018-04-28 | 2019-01-08 | 山东金钟科技集团股份有限公司 | A kind of large-tonnage rail weighbridge test calibration equipment |
| CN109374198A (en) * | 2018-08-23 | 2019-02-22 | 苏州集成校准检测认证有限公司 | Wheel track dynamic force ground test calibration system and method |
| DE102020206343A1 (en) * | 2020-05-20 | 2021-11-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | Procedure for calibrating an electro-proportional adjustable proportional valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116006527B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103759885B (en) | A kind of calibration test platform for force-measuring wheel set | |
| CN102235943A (en) | Loading test device | |
| CN102607681B (en) | Intelligent whole vehicle weighing platform | |
| CN203672555U (en) | Instrumented wheelset calibration test stand | |
| CN203798552U (en) | Automobile side protection intensity detection testing bench | |
| CN113200450A (en) | Gauge and wheel pressure self-adaptive rail gnawing prevention walking device | |
| CN102357842A (en) | Double compensation method and device for moving tilt of numerical control floor type boring-milling machine ram | |
| CN116006527B (en) | High-precision portable hydraulic control device and track sensor calibration system | |
| CN108759768A (en) | Rail traffic vehicles car body assembles amount of deflection adjustment amount on-position measure and indicating means | |
| CN101537510B (en) | Method for processing large-sized rudder blade | |
| CN106198064A (en) | 100% low floor vehicle vehicle static strength test platform | |
| CN205099249U (en) | A device for assembling hoist activity landing leg | |
| US2339152A (en) | Hydrostatical weighing apparatus | |
| CN204202888U (en) | A kind of Efficient track bogie of car static test equipment | |
| CN212228058U (en) | Simulated rail device | |
| AU2021408391A1 (en) | Wheel support for supporting a wheel mounted on a bogie, and test stand for testing bogies of rail vehicles | |
| CN112525563B (en) | Suspension bogie comprehensive test bed and test equipment | |
| CN114111520A (en) | Device and method for measuring axial clearance of gear box with pulley pair | |
| CN215160093U (en) | Test bench for splicing elevator guide rails | |
| CN208104495U (en) | The tension stabilizing device of vertical float mode | |
| CN204964198U (en) | Whole car heat balance test work bench's lift platform | |
| CN217560965U (en) | Steering simulation test bed | |
| CN208265644U (en) | A kind of device adjusting bridge crane traffic direction | |
| CN104016059A (en) | Roller bed used for conveying ultra-long and ultra-heavy workpieces | |
| CN216608911U (en) | Main end beam splicing and adjusting device of European crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |