CN215596036U - Synchronous motor control valve block - Google Patents
Synchronous motor control valve block Download PDFInfo
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- CN215596036U CN215596036U CN202120214428.1U CN202120214428U CN215596036U CN 215596036 U CN215596036 U CN 215596036U CN 202120214428 U CN202120214428 U CN 202120214428U CN 215596036 U CN215596036 U CN 215596036U
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Abstract
The utility model discloses a synchronous motor control valve block, which comprises a valve block body, wherein a plurality of shunt channels which are connected in parallel are arranged in the valve block body, oil inlet ends of the shunt channels are respectively connected with different oil distributing ports of a synchronous motor through oil inlet pipelines, and oil outlet ends of the shunt channels are respectively connected with different hydraulic cylinders through oil outlet pipelines; the valve block body is provided with an overflow valve and a one-way valve which correspond to each shunt channel and are used for eliminating synchronous errors, an oil inlet of the overflow valve and an oil outlet of the one-way valve are connected with the corresponding shunt channels, and an oil outlet of the overflow valve and an oil inlet of the one-way valve are connected with an oil return pipeline through a hinged pipe joint arranged on the valve block body. The utility model utilizes the overflow valve and the check valve to respectively eliminate the synchronous error generated by the hydraulic cylinders connected with each flow dividing channel when the hydraulic oil flows in the forward direction and the reverse direction, ensures that a plurality of hydraulic cylinders are simultaneously opened and reach the designated position, and greatly improves the synchronous precision of the hydraulic cylinders which are operated in parallel.
Description
Technical Field
The utility model relates to an oil way control valve block which is matched with a synchronous motor to realize synchronous operation of multiple oil cylinders, and belongs to the technical field of hydraulic control.
Background
When several hydraulic cylinders supplied by the same oil source work in parallel, if no flow equalization measure is adopted, the hydraulic cylinder bearing the minimum load firstly starts the working cycle, and the stroke of the hydraulic cylinder is finished. The second light load starts working, and so on. However, this operation mode is not usually required, and in most cases, several hydraulic cylinders operating in parallel are required to operate synchronously, and at this time, the total pump flow needs to be divided into a series of partial flows by using a hydraulic synchronous motor or other flow distribution devices, so that several hydraulic cylinders are opened simultaneously and reach the designated position.
The hydraulic synchronous motor is formed by coaxially connecting a plurality of hydraulic motors with higher processing precision and the same size. The same size and higher machining accuracy allow approximately the same flow rate through each hydraulic motor, thereby allowing simultaneous operation of multiple hydraulic cylinders.
In the practical use process, even if the manufacturing precision of the hydraulic synchronous motor is high, the manufacturing parameters of a plurality of hydraulic cylinders are completely the same, the hydraulic cylinders connected in parallel often cannot run synchronously, and the system synchronization precision is mainly shown as the system synchronization precision cannot reach the synchronization precision of the sample calibration of the hydraulic synchronous motor, because the system synchronization precision is also influenced by the following factors:
1. arrangement of hydraulic pipes.
2. Imbalance in load.
3. The content of gas in the hydraulic oil.
4. Viscosity and temperature of the hydraulic oil.
Therefore, how to improve the synchronization precision of the hydraulic cylinders running in parallel becomes a difficult problem for related technicians.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a synchronous motor control valve block aiming at the defects of the prior art so as to improve the synchronous precision of hydraulic cylinders running in parallel.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a synchronous motor control valve block comprises a valve block body, wherein a plurality of shunt channels which are connected in parallel are arranged in the valve block body, oil inlet ends of the shunt channels are respectively connected with different oil distributing openings of a synchronous motor through oil inlet pipelines, and oil outlet ends of the shunt channels are respectively connected with different hydraulic cylinders through oil outlet pipelines; the valve block body is provided with an overflow valve and a one-way valve which correspond to each shunt channel and are used for eliminating synchronous errors, an oil inlet of the overflow valve and an oil outlet of the one-way valve are connected with the corresponding shunt channels, and an oil outlet of the overflow valve and an oil inlet of the one-way valve are connected with an oil return pipeline through a hinged pipe joint arranged on the valve block body.
According to the synchronous motor control valve block, each shunting channel of the valve block body is provided with the pressure measuring joint matched with the oil pressure gauge, and the pressure measuring joints are arranged on the surface of the valve block body and are communicated with the corresponding shunting channels through oil ducts.
Above-mentioned synchronous motor control valve piece, the oil feed end of every reposition of redundant personnel passageway in the valve piece body all is provided with oil inlet pipe assorted oil feed flange subassembly.
Above-mentioned synchronous motor control valve piece, the end of producing oil of every reposition of redundant personnel passageway in the valve piece body all is provided with the flange subassembly that produces oil with oil outlet pipe assorted.
In the synchronous motor control valve block, the overflow valve and the one-way valve are cartridge valves.
The synchronous motor controls the valve block, and the number of the flow channels in the valve block body is 4.
The utility model utilizes the overflow valve and the check valve to respectively eliminate the synchronous error generated by the hydraulic cylinders connected with each flow dividing channel when the hydraulic oil flows in the forward direction and the reverse direction, ensures that a plurality of hydraulic cylinders are simultaneously opened and reach the designated position, and greatly improves the synchronous precision of the hydraulic cylinders which are operated in parallel. In addition, the valve block also has the advantages of simple structure, low cost, convenient installation, reliable operation and the like.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a perspective view of a quad synchronous motor control valve block according to an embodiment of the utility model;
fig. 2 is an outline view of a four-in-one synchronous motor control valve block according to an embodiment of the present invention, in which (a) is a front view, (b) is a left view, (c) is a right view, (d) is a rear view, (e) is a top view, and (f) is a bottom view;
FIG. 3 is a hydraulic schematic diagram of a quad synchronous motor control valve block according to an embodiment of the utility model;
FIG. 4 is a schematic diagram of the connection of a four-in-one synchronous motor control valve block in a four-cylinder synchronous hydraulic system according to an embodiment of the utility model.
The figures are labeled as follows: 1. the hydraulic control valve block comprises a valve block body, 201, a first oil outlet flange component, 202, a second oil outlet flange component, 203, a third oil outlet flange component, 204, a fourth oil outlet flange component, 301, a first oil inlet flange component, 302, a second oil inlet flange component, 303, a third oil inlet flange component, 304, a fourth oil inlet flange component, 401, a first overflow valve, 402, a second overflow valve, 403, a third overflow valve, 404, a fourth overflow valve, 501, a first pressure measuring joint, 502, a second pressure measuring joint, 503, a third pressure measuring joint, 504, a fourth pressure measuring joint, 601, a first check valve, 602, a second check valve, 603, a third check valve, 604, a fourth check valve, 701, a first hydraulic cylinder, 702, a second hydraulic cylinder, 703, a third hydraulic cylinder, 704, a fourth hydraulic cylinder, 8, a hinged pipe joint, 9, an electro-hydraulic reversing valve, 10 and a synchronous motor.
Detailed Description
Aiming at the defects of the prior art, the utility model provides a multi-connected synchronous motor control valve block to improve the control precision of the synchronous work of multiple oil cylinders and eliminate synchronous accumulated errors.
Taking the quadruple synchronous motor control valve block as an example for detailed description, referring to fig. 1 to 4, four shunt channels are arranged inside a valve block body 1 of the quadruple synchronous motor control valve block, oil inlet ends (i.e., P1, P2, P3 and P4 in fig. 3) of the four shunt channels are respectively connected with different oil distribution ports (i.e., C, D, E and F in fig. 4) of the quadruple synchronous motor 10 through oil inlet pipelines, and oil outlet ends (i.e., P1 ', P2', P3 'and P4' in fig. 3) are respectively connected with different hydraulic cylinders (i.e., the first hydraulic cylinder 701, the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 in fig. 4) through oil outlet pipelines; the valve block body 1 is provided with overflow valves (i.e. a first overflow valve 401, a second overflow valve 402, a third overflow valve 403 and a fourth overflow valve 404 in fig. 3) and check valves (i.e. a first check valve 601, a second check valve 602, a third check valve 603 and a fourth check valve 604 in fig. 3) corresponding to each diversion passage for eliminating synchronization errors, oil inlets of the overflow valves and oil outlets of the check valves are connected with the corresponding diversion passages, and oil outlets of the overflow valves and oil inlets of the check valves are connected with oil return pipelines through hinged pipe joints 8 arranged on the valve block body.
The overflow valve and the one-way valve both adopt cartridge valves so as to improve the integration level and facilitate the field arrangement and installation.
For example, the oil inlet end of each flow dividing channel in the valve block body 1 is provided with an oil inlet flange assembly (i.e., a first oil inlet flange assembly 301, a second oil inlet flange assembly 302, a third oil inlet flange assembly 303, and a fourth oil inlet flange assembly 304 in fig. 1 and 2) matched with the oil inlet pipeline, so as to facilitate connection with the oil inlet pipeline and the oil outlet pipeline. The oil outlet end of each flow dividing channel is provided with an oil outlet flange assembly (namely, a first oil outlet flange assembly 201, a second oil outlet flange assembly 202, a third oil outlet flange assembly 203 and a fourth oil outlet flange assembly 204 in fig. 1 and fig. 2) matched with an oil outlet pipeline.
Pressure taps (i.e., a first pressure tap 501, a second pressure tap 502, a third pressure tap 503 and a fourth pressure tap 504 in fig. 3) are designed on each branch passage of the valve block body 1 to monitor the pressure in each branch passage.
Fig. 4 is a specific embodiment of the valve block body 1 in a four-cylinder synchronous hydraulic system:
the four-hydraulic-cylinder synchronous system comprises a first hydraulic cylinder 701, a second hydraulic cylinder 702, a third hydraulic cylinder 703, a fourth hydraulic cylinder 704, an electro-hydraulic directional valve 9 and a four-linkage synchronous motor 10. The P port of the electro-hydraulic directional valve 9 is connected with a high-pressure oil port of a hydraulic system, the T port of the electro-hydraulic directional valve 9 is connected with an oil return pipeline of the hydraulic system, the A port of the electro-hydraulic directional valve 9 is connected with a total K port of the four-linked synchronous motor 10, the B port of the electro-hydraulic directional valve 9 is connected with rod cavities of a first hydraulic cylinder 701, a second hydraulic cylinder 702, a third hydraulic cylinder 703 and a fourth hydraulic cylinder 704, four oil distributing ports C, D, E, F of the four-linked synchronous motor 10 are connected with a first oil inlet flange component 301, a second oil inlet flange component 302, a third oil inlet flange component 303 and a fourth oil inlet flange component 304 of the valve block body 1 through hydraulic pipelines, and the first oil outlet flange component 201, the second oil outlet flange component 202, the third oil outlet flange component 203 and the fourth oil outlet flange component 204 are respectively connected with the corresponding first hydraulic cylinder 701, second hydraulic cylinder 702, third hydraulic cylinder 703 and fourth hydraulic cylinder 704 through hydraulic pipelines, The rodless chambers of fourth cylinder 704 are connected.
When the electromagnet 2DT of the electro-hydraulic directional valve 9 is powered on, pressure oil enters a total K port of the quadruple synchronous motor 10 through an a port of the electro-hydraulic directional valve 9, is shunted by the quadruple synchronous motor 10 and then is output to an oil port corresponding to the valve block body 1 through the oil shunting port C, D, E, F, and then enters rodless cavities of the first hydraulic cylinder 701, the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 through shunting channels in the valve block body 1 respectively, piston rods of the four hydraulic cylinders stretch out simultaneously, and hydraulic oil in rod cavities of the four hydraulic cylinders enters an oil return pipeline through a B port of the electro-hydraulic directional valve 9.
If the piston rod of the first hydraulic cylinder 701 extends out in the whole process, the piston rods of the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 do not extend out in place, the electromagnet 2DT of the electro-hydraulic directional valve 9 is continuously electrified, the quadruple hydraulic motor 10 continuously rotates under the action of pressure oil, and the first overflow valve 601 connected with the first hydraulic cylinder 701 in the valve block body 1 overflows until the piston rods of the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 all extend out in place. Therefore, errors when the piston rods of the first hydraulic cylinder 701, the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 extend are completely eliminated. If the piston rods of other hydraulic cylinders except the first hydraulic cylinder 701 extend to the whole range first, the principle of eliminating the error is the same as that when the piston rod of the first hydraulic cylinder 701 extends to the first.
When the electromagnet 1DT of the electro-hydraulic directional valve 9 is powered on, pressure oil enters the rod cavities of the first hydraulic cylinder 701, the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 through the B port of the electro-hydraulic directional valve 9, the piston rods of the first hydraulic cylinder 701, the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 perform retraction motions, hydraulic oil in the rod-free cavities of the first hydraulic cylinder 701, the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 enters the valve block body 1 through the hydraulic pipes by the first oil outlet flange component 201, the second oil outlet flange component 202, the third oil outlet flange component 203 and the fourth oil outlet flange component 204, and enters the oil distribution port C, D, E, F of the quadruple synchronous motor 10 through the first oil inlet flange component 301, the second oil inlet flange component 302, the third oil inlet flange component 303, the fourth oil inlet flange component 304 and the hydraulic pipes, and then enters an oil return pipeline through an A port of the electro-hydraulic reversing valve 9 after being gathered by a main K port.
If the piston rod of the first hydraulic cylinder 701 retracts to the right first, and the piston rods of the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 do not retract to the right yet, at this time, the electromagnet 1DT of the electro-hydraulic directional valve 9 continues to be electrified, the quadruple hydraulic motor 10 continues to rotate under the action of the rodless cavity hydraulic oil of the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704, and the first check valve 601 inside the valve block body 1 connected with the first hydraulic cylinder 701 sucks oil until all the piston rods of the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 retract to the right position. In this way, errors when the piston rods of the first hydraulic cylinder 701, the second hydraulic cylinder 702, the third hydraulic cylinder 703 and the fourth hydraulic cylinder 704 are retracted are all eliminated. If the piston rods of other hydraulic cylinders except the first hydraulic cylinder 701 are firstly retracted to the right, the principle of eliminating the error is the same as that when the piston rod of the first hydraulic cylinder 701 is firstly retracted to the right.
Specification and model of hydraulic elements:
self-machining of valve block body
First oil outlet flange component 201H-SFS 600442 multiplied by 5
Second outlet flange assembly 202H-SFS 600442 multiplied by 5
Third outlet flange assembly 203H-SFS 600442X 5
Fourth outlet flange assembly 204H-SFS 600442X 5
First oil feed flange assembly 301H-SFS 600548 x 5
Second oil inlet flange assembly 302H-SFS 600548 x 5
Third oil inlet flange component 303H-SFS 600548 multiplied by 5
Fourth oil feed flange assembly 304H-SFS 600548X 5
The fourth overflow valve 404 DBDS30K10/31.5
First pressure measuring connector 501 CSH-M14 multiplied by 1.5/WD
First check valve 601M-SR 15KE05-10B
Second check valve 602M-SR 15KE05-10B
Third check valve 603M-SR 15KE05-10B
Fourth check valve 604M-SR 15KE05-10B
Articulated pipe joint 8, JB 978-7742
Electro-hydraulic reversing valve 9 DG5V-H8-6C-T-VM-U-L-H5-30
Synchronous motor 10 JKS-024S-FC-V.
Claims (6)
1. A synchronous motor control valve block is characterized by comprising a valve block body (1), wherein a plurality of shunt channels which are connected in parallel are arranged in the valve block body (1), oil inlet ends of the shunt channels are respectively connected with different oil distributing ports of a synchronous motor (10) through oil inlet pipelines, and oil outlet ends of the shunt channels are respectively connected with different hydraulic cylinders through oil outlet pipelines; the overflow valve and the check valve which correspond to each shunt channel and are used for eliminating synchronous errors are arranged on the valve block body (1), an oil inlet of the overflow valve and an oil outlet of the check valve are connected with the corresponding shunt channels, and the oil outlet of the overflow valve and the oil inlet of the check valve are connected with an oil return pipeline through a hinged pipe joint (8) arranged on the valve block body (1).
2. The synchronous motor control valve block as claimed in claim 1, wherein each branch passage of the valve block body (1) is provided with a pressure measuring joint matched with an oil pressure gauge, and the pressure measuring joint is arranged on the surface of the valve block body (1) and is communicated with the corresponding branch passage through an oil passage.
3. The synchronous motor control valve block as claimed in claim 1 or 2, wherein an oil inlet flange component matched with an oil inlet pipeline is arranged at the oil inlet end of each flow dividing channel in the valve block body (1).
4. A synchronous motor control valve block according to claim 3, characterized in that the oil outlet end of each flow dividing channel in the valve block body (1) is provided with an oil outlet flange component matched with an oil outlet pipeline.
5. The synchronous motor control valve block of claim 4, wherein the relief valve and the check valve are cartridge valves.
6. A synchronous motor control valve block as claimed in claim 5, characterized in that the number of the partial flow passages in the valve block body (1) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120214428.1U CN215596036U (en) | 2021-01-26 | 2021-01-26 | Synchronous motor control valve block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120214428.1U CN215596036U (en) | 2021-01-26 | 2021-01-26 | Synchronous motor control valve block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215596036U true CN215596036U (en) | 2022-01-21 |
Family
ID=79869164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120214428.1U Active CN215596036U (en) | 2021-01-26 | 2021-01-26 | Synchronous motor control valve block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215596036U (en) |
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2021
- 2021-01-26 CN CN202120214428.1U patent/CN215596036U/en active Active
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