CN214118604U - Novel AC servo pump control oil cylinder system based on hydraulic compensation - Google Patents
Novel AC servo pump control oil cylinder system based on hydraulic compensation Download PDFInfo
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- CN214118604U CN214118604U CN202022393675.0U CN202022393675U CN214118604U CN 214118604 U CN214118604 U CN 214118604U CN 202022393675 U CN202022393675 U CN 202022393675U CN 214118604 U CN214118604 U CN 214118604U
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- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 23
- 239000010720 hydraulic oil Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model discloses a novel AC servo pump control oil cylinder system based on hydraulic compensation, which comprises a hydraulic cylinder, a hydraulic pump, a hydraulic valve block component, a servo motor, a servo driver and a controller; the controller, the servo driver, the servo motor and the hydraulic pump are sequentially connected in a control mode; the hydraulic pump is communicated with the hydraulic cylinder through a valve block assembly; the valve block assembly is formed based on a hydraulic control valve and is positioned between the hydraulic pump and the hydraulic cylinder; the hydraulic valve block assembly is connected with the controller. According to the scheme, the pump control technology is adopted, so that the hydraulic cylinder can be directly controlled to move without a throttling element, and the characteristic of energy conservation is achieved; secondly, pressure, temperature and stroke sensors are integrated on the valve block and the hydraulic cylinder, and the system is highly integrated, simple in structure and easy to arrange.
Description
Technical Field
The utility model relates to a mechanical control technical field, concretely relates to novel AC servo pump accuse hydro-cylinder system based on hydraulic pressure compensation.
Background
The electro-hydraulic control technology mainly comprises two types of pump control and valve control. At present, valve control is widely applied, and the biggest defects are throttling and overflow loss and low energy efficiency. The low energy efficiency not only increases the installed power of the system, but also causes the heating of the system, thereby bringing about a series of problems.
Therefore, in order to solve the problems fundamentally, a technology capable of directly controlling the movement of the hydraulic cylinder without passing through the throttling element is urgently needed.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists in current servo motor, the utility model aims to provide a novel AC servo pump accuse hydro-cylinder system based on hydraulic pressure compensation, it can not pass through throttling element, the motion of direct control pneumatic cylinder.
In order to achieve the above object, the utility model provides a novel AC servo pump control oil cylinder system based on hydraulic compensation, which comprises a hydraulic cylinder, a hydraulic pump, a hydraulic valve block assembly, a servo motor, a servo driver and a controller; the controller, the servo driver, the servo motor and the hydraulic pump are sequentially connected in a control mode; the hydraulic pump is communicated with the hydraulic cylinder through a valve block assembly; the valve block assembly is formed based on a hydraulic control valve and is positioned between the hydraulic pump and the hydraulic cylinder; the hydraulic valve block assembly is connected with the controller.
Furthermore, one end of the hydraulic cylinder is connected with a stroke sensor.
Further, the stroke sensor is connected with the controller.
Furthermore, the hydraulic pump is a high-pressure bidirectional motor hydraulic pump, and is divided into two oil paths in the hydraulic cylinder.
Furthermore, the valve block assembly comprises a valve block, a temperature sensor, a plurality of safety valves, a plurality of pressure sensors, an energy accumulator, a one-way valve and a hydraulic one-way valve; the temperature sensor, the safety valves, the pressure sensors, the energy accumulator, the check valve and the hydraulic check valve are integrated on the installation base surface of the valve block; the pressure sensors and the safety valves are symmetrically connected in series on the two oil paths respectively; the check valves and the hydraulic check valves are symmetrically arranged on the two oil paths.
Furthermore, a plurality of pipe connectors are arranged on the mounting base surface of the valve block; a plurality of pipelines corresponding to the pipe interfaces are arranged in the valve block; the pipelines are communicated with each other.
Further, the stroke sensor is a magnetostrictive built-in sensor.
The utility model provides a novel AC servo pump accuse hydro-cylinder system based on hydraulic pressure compensation, it is through adopting the pump accuse technique, and servo motor directly drives the constant delivery pump, does not pass through throttling element, and the motion of direct control pneumatic cylinder has energy-conserving characteristics.
Drawings
The invention is further described with reference to the following drawings and detailed description.
FIG. 1 is a schematic structural diagram of an AC servo pump control oil cylinder in the scheme;
FIG. 2 is a schematic structural view of a valve block fitting in the present embodiment;
FIG. 3 is a schematic view of the internal structure of the valve block in the present embodiment;
fig. 4 is a schematic diagram of the principle of the AC servo pump control cylinder system in the present scheme.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, which is a schematic structural diagram of an AC servo pump control cylinder system in the present embodiment, it can be seen that the AC servo pump control cylinder mainly comprises a hydraulic pump 500, a hydraulic cylinder 200, a hydraulic valve block assembly 100, and a stroke sensor 300.
The hydraulic valve block assembly 100 is mounted at one end above the hydraulic cylinder 200 and is connected with the hydraulic cylinder 200 through a bolt; the stroke sensor 300 is integrated into the hydraulic cylinder 200 by means of a thread connection, using a magnetostrictive built-in sensor.
Specifically, referring to fig. 2 to 4, in the present embodiment, the hydraulic valve block assembly 100 is composed of a valve block 110, a temperature sensor 120, a first relief valve 130a, a second relief valve 130b, a first pressure sensor 140a, a second pressure sensor 140b, a pilot operated check valve 160, a check valve 150, a fuel filler 170 and an accumulator 180. The above components are mounted on the mounting base surface of the valve block 110, and are fixed on the valve block 110 by being connected with the interface on the valve block 110;
specifically, the valve block 110 is a mounting body, and is often connected to the hydraulic cylinder 200 by bolts. The hydraulic oil transmission device is provided with 5 installation base surfaces, namely an upper end surface 111, a first side surface 112, a second side surface 113, a third side surface (not marked in the figure) and a fourth side surface (not marked in the figure), wherein each end surface is provided with a plurality of pipe joints, and the pipe joints on the corresponding end surfaces in the inner part are provided with a plurality of mutually communicated pore channels for transmitting hydraulic oil.
The structure of the valve block 110 is well known to those skilled in the art and will not be described herein.
Further, the upper end surface 111 of the valve block is provided with an oil port 170 for injecting hydraulic oil; the accumulator 180 is mounted to the upper end face 111 of the valve block.
The accumulator 180 here has several main roles in the system:
(1) when the piston rod of the hydraulic cylinder 200 extends out, the oil in the accumulator is released to be supplemented into the system, and when the piston rod of the hydraulic cylinder retracts, the redundant oil in the system is recovered to the accumulator, so that the function of storing the oil tank is achieved.
(2) Because the hydraulic circuit in the hydraulic valve block 110 is complicated, the whole system has certain pressure loss, the pumping of the hydraulic pump is easy to cause, the oil cylinder crawls to generate noise, the energy accumulator provides positive pressure in the system, and the pumping problem of the oil pump is solved.
(3) The hydraulic pump 500 leaks oil to be stored in the accumulator 180.
Further, a temperature sensor 120 for detecting the internal temperature of the valve block is disposed at the first side 112 of the valve block 110; the first safety valve 130a and the second safety valve 130b are symmetrically arranged on the first side surface 112 of the valve block 110, and are used for controlling the hydraulic pressure inside the valve block 110, so that the operation of equipment is protected.
The temperature sensor 120 and the safety valve are well known to those skilled in the art and will not be described herein; secondly, the number of the safety valves is not limited and can be determined according to actual conditions.
A check valve 150 is installed at the second side 113 of the valve block for injecting the surplus hydraulic oil into the accumulator 280; the first pressure sensor 140a and the second pressure sensor 140b are symmetrically disposed on the second side 113 and the fourth side of the valve block, respectively, and are used for detecting pressure values in the valve block 110; the pilot operated check valve 160 is installed at the second side 113 of the valve block 110.
The construction of the check valve 150, the pressure sensor and the pilot operated check valve 160 is well known to those skilled in the art and will not be described herein; secondly, the number of the pressure sensors is not limited and can be determined according to the actual situation.
The installation base surface on which the component is installed is not limited and can be determined according to actual conditions; secondly, the size of the components is determined according to the required condition, and the components are not interfered with each other when being installed.
The stroke sensor 300 is used for detecting a displacement value, and the present solution is preferably a magnetostrictive built-in sensor, which is not easily damaged and has reliable performance, and is integrated at one end of the hydraulic cylinder 200 by a threaded connection.
The construction of the travel sensor 300 is well known to those skilled in the art and will not be described in detail herein.
The hydraulic pump 500 is matched with the hydraulic cylinder 200, and the hydraulic cylinder 200 can be driven to extend and retract by the rotation of the hydraulic pump 500. In the scheme, the hydraulic pump 500 adopts a high-pressure bidirectional motor hydraulic pump, and is divided into two oil paths in the hydraulic cylinder 200, wherein a first pressure sensor 140a, a second pressure sensor 140b and a first safety valve 130a are respectively connected in series on the two oil paths symmetrically; the pilot operated check valve 160 and the check valve 150 are symmetrically disposed on the two oil passages.
The construction of the hydraulic pump 500 and the hydraulic cylinder 200 is well known to those skilled in the art and will not be described herein.
The oil is replenished into the hydraulic cylinder through the check valve 150, when the hydraulic oil passes through the two oil paths respectively and passes through the first pressure sensor 140a or the second pressure sensor 140b, the detection shows that if the hydraulic oil pressure is too high, the first safety valve 130a or the second safety valve 130b is opened, and the hydraulic oil returns to the hydraulic pump 500 through backflow; if the pressure is within the normal range, the transfer continues and the excess hydraulic oil is finally recovered to the accumulator 180 through the hydraulic check valve 160.
According to the scheme, a servo driver 700, a controller 600 and a servo motor 400 are matched on the basis of a servo pump control oil cylinder; the controller 600 is used for sending commands and receiving signals, and has one end connected to the stroke sensor 300 and the other end connected to the servo driver 700.
The other end of the servo driver 700 is connected with the servo motor 400; the servo motor 400 is connected to the hydraulic pump 500. The servo motor 400 drives the hydraulic pump 500 to rotate through the servo driver 700 according to a command input from the controller, and the hydraulic cylinder 200 extends by the rotation of the hydraulic pump 500.
The working process of the method in application is illustrated as follows.
The utility model provides a novel AC servo pump accuse hydro-cylinder based on hydraulic pressure compensation is right, and it is when concrete application, controller 600 sends the instruction, and servo motor 400 receives and drives hydraulic pump 500 through servo driver 700 after the instruction and rotates, and pneumatic cylinder 200 stretches out this moment.
The hydraulic oil in the accumulator 180 is matched with the check valve 150, and the hydraulic oil is injected into the valve block 110 to supplement the oil. At this time, the temperature sensor 120, the stroke sensor 300 and the pressure sensor of the valve block 110 feed back signals sensed during operation to the controller 600, and the controller 600 corrects the rotation speed of the motor by amplification and comparison.
When the hydraulic cylinder retracts, the check valve 150 reverses the flow direction through the pilot operated check valve 160, the excess hydraulic oil is recycled to the accumulator 180, and the internal relief valve controls the hydraulic pressure to achieve the safety function.
According to the novel AC servo pump control oil cylinder system based on hydraulic compensation, which is formed by the scheme, the servo motor directly drives the constant delivery pump through adopting a pump control technology, and the hydraulic cylinder is directly controlled to move without passing through a throttling element. It has the following advantages:
(1) the high integration of the pressure, temperature and stroke sensor is realized by integrating the pressure, temperature and stroke sensors on the valve block and the hydraulic cylinder, the structure is simple, and the arrangement is easy.
(2) The energy accumulator has the function of an oil tank and can also perform a pressurization effect on the system, and the problems of oil cylinder crawling, system noise and the like caused by overlarge damping are reduced.
(3) The hydraulic oil pump adopts a high-pressure bidirectional plunger motor, so that the rated voltage of the system is improved, and the working efficiency is improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A novel AC servo pump control oil cylinder system based on hydraulic compensation comprises a hydraulic cylinder, a hydraulic pump, a hydraulic valve block assembly, a servo motor, a servo driver and a controller; the system is characterized in that the controller, the servo driver, the servo motor and the hydraulic pump are sequentially connected in a control way; the hydraulic pump is communicated with the hydraulic cylinder through a valve block assembly; the valve block assembly is formed based on a hydraulic control valve and is positioned between the hydraulic pump and the hydraulic cylinder; the hydraulic valve block assembly is connected with the controller.
2. The novel AC servo pump control cylinder system based on hydraulic compensation is characterized in that a stroke sensor is connected to one end of the hydraulic cylinder.
3. The novel AC servo pump control cylinder system based on hydraulic compensation is characterized in that the stroke sensor is connected with a controller.
4. The novel AC servo pump control oil cylinder system based on hydraulic compensation is characterized in that the hydraulic pump is a high-pressure bidirectional motor hydraulic pump, and two oil paths are divided in the hydraulic cylinder.
5. The novel AC servo pump control cylinder system based on hydraulic compensation as claimed in claim 1, wherein the valve block assembly comprises a valve block, a temperature sensor, a plurality of safety valves, a plurality of pressure sensors, an accumulator, a check valve, a hydraulic check valve; the temperature sensor, the safety valves, the pressure sensors, the energy accumulator, the check valve and the hydraulic check valve are integrated on the installation base surface of the valve block; the pressure sensors and the safety valves are symmetrically connected in series on the two oil paths respectively; the check valves and the hydraulic check valves are symmetrically arranged on the two oil paths.
6. The novel AC servo pump control cylinder system based on hydraulic compensation as claimed in claim 5, wherein a plurality of pipe interfaces are arranged on the mounting base surface of the valve block; a plurality of pipelines corresponding to the pipe interfaces are arranged in the valve block; the pipelines are communicated with each other.
7. The novel AC servo pump control cylinder system based on hydraulic compensation as claimed in claim 2, wherein the stroke sensor is a magnetostrictive built-in sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022393675.0U CN214118604U (en) | 2020-10-23 | 2020-10-23 | Novel AC servo pump control oil cylinder system based on hydraulic compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022393675.0U CN214118604U (en) | 2020-10-23 | 2020-10-23 | Novel AC servo pump control oil cylinder system based on hydraulic compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214118604U true CN214118604U (en) | 2021-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022393675.0U Expired - Fee Related CN214118604U (en) | 2020-10-23 | 2020-10-23 | Novel AC servo pump control oil cylinder system based on hydraulic compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214118604U (en) |
-
2020
- 2020-10-23 CN CN202022393675.0U patent/CN214118604U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210903 |
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| CF01 | Termination of patent right due to non-payment of annual fee |