CN217539151U - Shaftless paper frame hydraulic station - Google Patents
Shaftless paper frame hydraulic station Download PDFInfo
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- CN217539151U CN217539151U CN202121296404.1U CN202121296404U CN217539151U CN 217539151 U CN217539151 U CN 217539151U CN 202121296404 U CN202121296404 U CN 202121296404U CN 217539151 U CN217539151 U CN 217539151U
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- 239000003921 oil Substances 0.000 claims description 170
- 239000010720 hydraulic oil Substances 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
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Abstract
The utility model relates to a shaftless paper frame hydraulic pressure station belongs to shaftless paper frame hydraulic pressure station field. The technical scheme adopted by the invention is as follows: the hydraulic cylinder and the three-position four-way electromagnetic reversing valve are communicated with an oil inlet and an oil outlet of the integrated oil circuit block, and the integrated oil circuit block is provided with a plurality of P ports and a plurality of T ports; the hydraulic cylinders comprise at least one pair of interconnected hydraulic cylinders and two independent hydraulic cylinders, and the three-position four-way electromagnetic reversing valve comprises at least one pair of interconnected M-type three-position four-way electromagnetic valve, an O-type three-position four-way electromagnetic valve and two Y-type three-position four-way electromagnetic valves. The shaftless paper frame hydraulic station is an improvement on the original shaftless support hydraulic system, achieves the purpose of reducing control valves through a reasonable integrated oil circuit block structure, and achieves the cost reduction. Through the synchronous design of the oil circuit, the oil in the two oil cylinder cavities is exchanged by adopting the least valves, and the synchronous effect is unchanged because the sectional areas of the oil cylinders are the same.
Description
Technical Field
The utility model relates to a shaftless paper frame hydraulic pressure station belongs to shaftless paper frame hydraulic pressure station field.
Background
The shaftless paper frame hydraulic station is indispensable equipment for running a plurality of mechanical devices. The shaftless paper frame hydraulic station obtains power output by increasing pressure oil for power equipment such as a hydraulic cylinder.
The existing shaftless paper frame hydraulic station realizes the control of external high-pressure oil transmission through various control valves, and the number of the control valves and the control connection relation determine the cost of the shaftless paper frame hydraulic station. In order to affect the output of the hydraulic oil as little as possible, it is necessary to reduce the cost of the equipment by improving the structure of the integrated oil circuit block and the connection relationship of the control valves.
Disclosure of Invention
The invention provides a shaftless paper frame hydraulic station which achieves the effect of hydraulic output by using as few control valve components as possible.
In order to achieve the purpose, the invention adopts the technical scheme that:
the shaftless paper frame hydraulic station comprises an oil tank, a hydraulic pump, an integrated oil path block, a plurality of groups of hydraulic cylinders and a plurality of three-position four-way electromagnetic reversing valves which are communicated through a hydraulic pipeline, wherein the hydraulic cylinders and the three-position four-way electromagnetic reversing valves are communicated with an oil inlet and an oil outlet of the integrated oil path block, and the integrated oil path block is provided with a plurality of P ports and a plurality of T ports;
the hydraulic cylinder comprises at least one pair of interconnected hydraulic cylinders and two independent hydraulic cylinders, and the three-position four-way electromagnetic directional valve comprises at least one pair of interconnected M-type three-position four-way electromagnetic valves, O-type three-position four-way electromagnetic valves and two Y-type three-position four-way electromagnetic valves;
the port A of the M-type three-position four-way electromagnetic valve is connected with the port P of the integrated oil circuit block, the port B is connected with the port T of the integrated oil circuit block, the port T of the M-type three-position four-way electromagnetic valve is connected with the port A of the left hydraulic cylinder in the interconnected hydraulic cylinders, the port T of the M-type three-position four-way electromagnetic valve is connected with the port A of the right hydraulic cylinder in the interconnected hydraulic cylinders through a first branch pipeline,
the port A of the O-shaped three-position four-way electromagnetic valve is connected with a first branch pipeline, the port B is respectively connected with the port B of the left hydraulic cylinder and the port B of the right hydraulic cylinder through a second branch pipeline, the port P of the O-shaped three-position four-way electromagnetic valve is connected with the port P of the integrated oil circuit block, the port T of the O-shaped three-position four-way electromagnetic valve is connected with the port T of the integrated oil circuit block, and the port P and the port T of the integrated oil circuit block are respectively connected with two ports of an overflow valve;
the port A of the Y-shaped three-position four-way electromagnetic valve is connected with the port A of an independent hydraulic cylinder, the port B of the Y-shaped three-position four-way electromagnetic valve is connected with the port B of the independent hydraulic cylinder, the port P of the Y-shaped three-position four-way electromagnetic valve is connected with the port P of the integrated oil way block, and the port T of the Y-shaped three-position four-way electromagnetic valve is connected with the port T of the integrated oil way block.
Preferably, a P-port oil passage and a T-port oil passage are arranged in the integrated oil circuit block, and the P-port oil passage is provided with a P-port oil inlet and a T-port oil outlet which are positioned at one end of the integrated oil circuit block, and a plurality of P ports and a plurality of T ports which are positioned on the side surface of the integrated oil circuit block;
preferably, a throttle valve and a hydraulic control one-way valve are respectively connected in series on two pipelines of the port A and the port B of the Y-shaped three-position four-way electromagnetic valve, which are connected with the hydraulic cylinder, and a hydraulic control pipeline of the hydraulic control one-way valve is connected with a pipeline where the other hydraulic control one-way valve is located.
Preferably, the M-type three-position four-way electromagnetic valve and the O-type three-position four-way electromagnetic valve which are interconnected are in one group, and the shaftless paper rack hydraulic station is provided with two groups which are respectively positioned at two sides of the two Y-type three-position four-way electromagnetic valves and are symmetrically arranged.
Preferably, a P port oil inlet of the integrated oil circuit block is connected with one of the three-way joints, the other one of the three-way joints is connected with a pressure gauge, the third structure is connected with a hydraulic oil high-pressure pipeline, a one-way valve, a hydraulic pump and an oil absorption filter screen are connected in series on the hydraulic oil high-pressure pipeline in the direction of the oil tank, the hydraulic oil high-pressure pipeline is finally introduced into the oil tank, a T port oil outlet of the integrated oil circuit block is connected with an oil return pipeline, the oil return pipeline is introduced into the oil tank, an oil temperature gauge is arranged in the oil tank, and an air filter is arranged on an air vent communicated with the outside of the oil tank.
Preferably, the oil tank is arranged in the shell, an inner shaft type motor for driving the hydraulic pump is arranged at the upper part of the shell, the pressure gauge and the oil temperature and oil level gauge are arranged on the side surface of the shell, and the air filter is arranged on the upper side surface of the shell.
Preferably, an integrated oil path block is arranged on the side face of the upper portion of the shell, six placing positions are arranged on the integrated oil path block, an M-shaped three-position four-way electromagnetic valve is placed at the first position from the left side of the integrated oil path block, an O-shaped three-position four-way electromagnetic valve is placed at the second position, a Y-shaped three-position four-way electromagnetic valve is placed at the third position, a throttling valve and a hydraulic control one-way valve are respectively superposed below the Y-shaped three-position four-way electromagnetic valve, a throttling valve and a hydraulic control one-way valve are superposed below the Y-shaped three-position four-way electromagnetic valve, an O-shaped three-position four-way electromagnetic valve is placed at the fifth position, an overflow valve is superposed below the O-shaped three-way electromagnetic valve, and an M-shaped three-position four-way electromagnetic valve is placed at the sixth position.
Preferably, the overflow valve is arranged below the O-shaped three-position four-way electromagnetic valve at the second position.
The shaftless paper frame hydraulic station is an improvement on the original shaftless support hydraulic system, and achieves the purpose of reducing control valves by arranging a reasonable integrated oil way block structure, thereby realizing the cost reduction. Through the synchronous design of the oil circuit, the oil in the two oil cylinder cavities is exchanged by adopting the least valves, and the synchronous effect is unchanged because the sectional areas of the oil cylinders are the same.
Drawings
Figure 1 is a hydraulic connection diagram of the present invention,
figure 2 is a diagram of the oil path connection of the present invention,
fig. 3 is a view showing the outer structure of the casing of the present invention.
Reference numerals: 1. the oil-way control system comprises an integrated oil-way block, 2, M-type three-position four-way electromagnetic valves, 3, O-type three-position four-way electromagnetic valves, 4, Y-type three-position four-way electromagnetic valves, 5, a first branch pipeline, 6, an interconnected left hydraulic cylinder, 7, an interconnected right hydraulic cylinder, 8, a lifting hydraulic cylinder, 9, P port oil ducts, 10, T port oil ducts, 11, an overflow valve, 12, a throttle valve, 13, a hydraulic control one-way valve, 14, a three-way joint, 15, a pressure gauge, 16, a one-way valve, 17, a hydraulic pump, 18, a shell, 19, an oil absorption filter screen, 20, an oil temperature gauge, 21, an oil tank, 22, an inner shaft type motor, 23, an air cleaner, 24 and a second branch pipeline.
Detailed Description
The following further illustrates the specific structure of the present invention:
the invention relates to a shaftless paper frame hydraulic station which has a structure shown in figures 1 and 2 and comprises an oil tank, a hydraulic pump, an integrated oil path block 1, a plurality of groups of hydraulic cylinders and a plurality of three-position four-way electromagnetic reversing valves which are communicated through a hydraulic pipeline, wherein the hydraulic cylinders and the three-position four-way electromagnetic reversing valves are communicated with an oil inlet and an oil outlet of the integrated oil path block 1, and the integrated oil path block 1 is provided with a plurality of P ports and a plurality of T ports.
The three-position four-way electromagnetic directional valve comprises two pairs of M-shaped three-position four-way electromagnetic valves 2 and O-shaped three-position four-way electromagnetic valves 3 which are interconnected, and two Y-shaped three-position four-way electromagnetic valves 4. The pneumatic cylinder includes the interconnection left side pneumatic cylinder, interconnection right side pneumatic cylinder and two hydraulic cylinder of two sets of interconnections.
As shown in fig. 2 and 3, the oil tank is arranged in the shell, the upper part of the shell is provided with an inner shaft type motor for driving the hydraulic pump, the side surface of the shell is provided with the pressure gauge 15 and the oil temperature and oil level gauge, and the upper side surface of the shell is provided with the air filter.
An integrated oil circuit block 1 is arranged on the side face of the upper portion of the shell, six placing positions are arranged on the integrated oil circuit block 1, an M-shaped three-position four-way electromagnetic valve 2 is placed at the first position from the left side of the integrated oil circuit block 1, an O-shaped three-position four-way electromagnetic valve 3 is placed at the second position, a Y-shaped three-position four-way electromagnetic valve 4 is placed at the third position, a throttling valve 12 and a hydraulic control one-way valve 13 are respectively superposed below the M-shaped three-position four-way electromagnetic valve 4, a throttling valve 12 and a hydraulic control one-way valve 13 are superposed below the Y-shaped three-position four-way electromagnetic valve 4, an O-shaped three-position four-way electromagnetic valve 3 is placed at the fifth position, an overflow valve 11 is superposed below the O-shaped three-position four-way electromagnetic valve 3, and an M-position three-way electromagnetic valve 2 is placed at the sixth position.
The specific connection relation of each solenoid valve is shown in fig. 1, wherein an A port of an M-type three-position four-way solenoid valve 2 is connected with a P port of an integrated oil circuit block 1, a B port of the integrated oil circuit block 1 is connected with a T port of the integrated oil circuit block 1, the T port of the M-type three-position four-way solenoid valve 2 is connected with an A port of an interconnected left hydraulic cylinder 6 in an interconnected hydraulic cylinder, and the T port of the M-type three-position four-way solenoid valve 2 is connected with an A port of an interconnected right hydraulic cylinder 7 in the interconnected hydraulic cylinder through a first branch pipeline 5;
a port A of the O-shaped three-position four-way electromagnetic valve 3 is connected with a first branch pipeline 5, a port B is respectively connected with a port B of the left hydraulic cylinder 6 and a port B of the right hydraulic cylinder 7 which are interconnected through a second branch pipeline, a port P of the O-shaped three-position four-way electromagnetic valve 3 is connected with a port P of the integrated oil circuit block 1, a port T of the O-shaped three-position four-way electromagnetic valve 3 is connected with a port T of the integrated oil circuit block 1, and two pipelines of the port P and the port T which are connected with the integrated oil circuit block 1 are respectively connected with two ports of the overflow valve 11;
the port A of the Y-shaped three-position four-way solenoid valve 4 is connected with the port A of the lifting hydraulic cylinder 8, the port B of the Y-shaped three-position four-way solenoid valve 4 is connected with the port B of an independent hydraulic cylinder, the port P of the Y-shaped three-position four-way solenoid valve 4 is connected with the port P of the integrated oil way block 1, and the port T of the Y-shaped three-position four-way solenoid valve 4 is connected with the port T of the integrated oil way block 1.
The integrated oil circuit block 1 is provided with a P port oil duct 9 and a T port oil duct 10 as shown in figure 1, wherein the P port oil duct 9 is provided with a P port oil inlet and a T port oil outlet which are arranged at one end of the integrated oil circuit block 1, and a plurality of P ports and a plurality of T ports which are arranged on the side surface of the integrated oil circuit block 1.
A throttle valve 12 and a pilot operated check valve 13 are respectively connected in series on two pipelines of the port a and the port B of the Y-shaped three-position four-way electromagnetic valve 4 connected with the hydraulic cylinder, and a pilot operated pipeline of the pilot operated check valve 13 is connected to a pipeline where the other pilot operated check valve 13 is located.
A joint in the three way connection 14 is connected to the P mouth oil inlet of integrated oil circuit piece 1, and another is connected with manometer 15, and the hydraulic oil high pressure line is connected to the third structure, and last the establishing ties to the oil tank direction of hydraulic oil high pressure line has check valve 16, hydraulic pump and oil absorption filter screen, lets in the oil tank at last, oil return line is connected to the T mouth oil-out of integrated oil circuit piece 1, and oil return line lets in the oil tank in, is equipped with oil temperature oil level indicator in the oil tank, is equipped with air cleaner on oil tank and the external UNICOM blow vent. The setting position of the relief valve 11 may also be changed to the position below the O-type three-position four-way solenoid valve 3 in the second position.
The working process of the shaftless paper frame hydraulic station comprises the following steps:
when the inner shaft type motor is electrified to drive the hydraulic pump to suck oil from the oil tank through the oil suction filter screen and then enter the three-way joint through the one-way valve, one end of the three-way joint enters the pressure gauge, the pressure gauge displays the current hydraulic pressure, the other end of the three-way joint enters the P-port oil duct of the integrated oil path block through the P-port oil inlet, and the P-port oil duct leads high-pressure oil to the port A of the M-type three-position four-way electromagnetic valve, the port P of the O-type three-position four-way electromagnetic valve and the port P of the Y-type three-position four-way electromagnetic valve.
And an overflow valve system overflow protection is arranged on a connecting pipeline of a P port of the O-shaped three-position four-way electromagnetic valve and a P port oil duct of the integrated oil path block.
When the electromagnet 1CT of the Y-shaped three-position four-way electromagnetic valve is electrified, hydraulic oil flows out from the port A, passes through the one-way throttle valve and then enters the port A of the hydraulic control one-way valve, the side of the port B of the hydraulic control one-way valve is opened and enters the rod cavity of the lifting hydraulic cylinder, hydraulic oil in the rodless cavity of the lifting hydraulic cylinder passes through the port B of the hydraulic control one-way valve and then is regulated by the one-way throttle valve to realize oil return throttling speed regulation, and the port B of the reversing valve returns to an oil duct of the port T.
When the electromagnet 2CT of the Y-shaped three-position four-way electromagnetic valve is electrified, hydraulic oil flows out from the port B, passes through the one-way throttle valve and then enters the port B of the hydraulic control one-way valve, the port A side of the hydraulic control one-way valve is opened and enters the rodless cavity of the lifting hydraulic cylinder, and the hydraulic oil in the rod cavity of the oil cylinder passes through the port A of the hydraulic control one-way valve and then is regulated by the one-way throttle valve to realize oil return throttling speed regulation.
When the Y-shaped three-position four-way electromagnetic valve does not work, the hydraulic control one-way valve immediately locks the oil way of the oil cylinder to realize long-time pressure maintaining. The working principles of the two lifting hydraulic cylinders are consistent.
The electromagnet 5CT of the O-shaped three-position four-way electromagnetic valve is electrified, pressure oil is divided into two paths through the port B and respectively enters the rod cavities of the two interconnected hydraulic cylinders, the hydraulic oil in the rodless cavity of the interconnected hydraulic cylinders passes through the M-shaped three-position four-way electromagnetic reversing valve 2, the integrated oil way block and the oil return box of the port A of the O-shaped three-position four-way electromagnetic valve, the hydraulic oil in the rodless cavity of the interconnected hydraulic cylinders passes through the integrated oil way block and the oil return box of the port A of the O-shaped three-position four-way electromagnetic valve, the rod contraction clamping is realized, and each oil port is closed when the power is off.
An electromagnet 6CT of the O-shaped three-position four-way electromagnetic valve is electrified, pressure oil is divided into two paths through an A port and enters a rodless cavity of the two interconnected hydraulic cylinders, rod cavity hydraulic oil of the two interconnected hydraulic cylinders returns to an oil tank through a B port of the O-shaped three-position four-way electromagnetic valve, rod releasing is achieved, and oil ports are closed when power is off.
The electromagnet 7CT of the M-type three-position four-way electromagnetic valve is electrified, pressure oil enters a rodless cavity of the interconnected hydraulic cylinder from the P port to enable the pressure oil to be discharged out of a rod, hydraulic oil in the rod cavity enters a rod cavity of the interconnected hydraulic cylinder through the integrated oil circuit block, and hydraulic oil in the rodless cavity of the interconnected hydraulic cylinder returns to an oil tank through the B-aperture integrated oil circuit block of the M-type three-position four-way electromagnetic valve, so that synchronous right movement is achieved. The electromagnet 8CT of the M-type three-position four-way electromagnetic valve is electrified, pressure oil enters a rodless cavity of the interconnected hydraulic cylinder through a T port to enable the pressure oil to be discharged out of a rod, hydraulic oil in a rod cavity enters a rod cavity of the interconnected hydraulic cylinder through the integrated oil circuit block, and the hydraulic oil in the rodless cavity of the interconnected hydraulic cylinder returns to an oil tank through the B-caliber integrated oil circuit block of the M-type three-position four-way electromagnetic valve to realize synchronous left movement.
Claims (8)
1. A shaftless paper frame hydraulic station comprises an oil tank, a hydraulic pump, an integrated oil way block (1), a plurality of groups of hydraulic cylinders and a plurality of three-position four-way electromagnetic reversing valves which are communicated through a hydraulic pipeline, wherein the hydraulic cylinders and the three-position four-way electromagnetic reversing valves are communicated with an oil inlet and an oil outlet of the integrated oil way block (1), and the integrated oil way block (1) is provided with a plurality of P ports and a plurality of T ports;
it is characterized in that the utility model is characterized in that,
the hydraulic cylinder comprises at least one pair of interconnected left hydraulic cylinder, interconnected right hydraulic cylinder and two lifting hydraulic cylinders, and the three-position four-way electromagnetic directional valve comprises at least one pair of interconnected M-type three-position four-way electromagnetic valve (2), O-type three-position four-way electromagnetic valve (3) and two Y-type three-position four-way electromagnetic valves (4);
an A port of the M-type three-position four-way electromagnetic valve (2) is connected with a P port of the integrated oil circuit block (1), a B port is connected with a T port of the integrated oil circuit block (1), the T port of the M-type three-position four-way electromagnetic valve (2) is connected with an A port of a left hydraulic cylinder (6) which is interconnected in the interconnected hydraulic cylinders, the P port of the M-type three-position four-way electromagnetic valve (2) is connected with an A port of a right hydraulic cylinder (7) which is interconnected in the interconnected hydraulic cylinders through a first branch pipeline (5),
a port A of the O-shaped three-position four-way electromagnetic valve (3) is connected with a first branch pipeline (5), a port B is respectively connected with a port B of the left hydraulic cylinder (6) and a port B of the right hydraulic cylinder (7) through a second branch pipeline, a port P of the O-shaped three-position four-way electromagnetic valve (3) is connected with a port P of the integrated oil way block (1), a port T of the O-shaped three-position four-way electromagnetic valve (3) is connected with a port T of the integrated oil way block (1), and two pipelines of the port P and the port T which are connected with the integrated oil way block (1) are respectively connected with two ports of the overflow valve (11);
a port A of the Y-shaped three-position four-way electromagnetic valve (4) is connected with a port A of a lifting hydraulic cylinder (8), a port B of the Y-shaped three-position four-way electromagnetic valve (4) is connected with a port B of an independent hydraulic cylinder, a port P of the Y-shaped three-position four-way electromagnetic valve (4) is connected with a port P of the integrated oil way block (1), and a port T of the Y-shaped three-position four-way electromagnetic valve (4) is connected with a port T of the integrated oil way block (1).
2. The shaftless paper holder hydraulic station according to claim 1, wherein a P port oil passage (9) and a T port oil passage (10) are arranged in the integrated oil path block (1), the P port oil passage (9) is provided with a P port oil inlet and a T port oil outlet which are arranged at one end of the integrated oil path block (1), and a plurality of P ports and a plurality of T ports are arranged on the side surface of the integrated oil path block (1).
3. The shaftless paper holder hydraulic station according to claim 2, wherein a throttle valve (12) and a pilot operated check valve (13) are respectively connected in series on two pipelines of the port a and the port B of the Y-shaped three-position four-way solenoid valve (4) connected with the hydraulic cylinder, and a pilot operated pipeline of the pilot operated check valve (13) is connected to a pipeline where the other pilot operated check valve (13) is located.
4. The shaftless paper holder hydraulic station according to claim 1, wherein said interconnected M-type three-position four-way solenoid valve (2) and O-type three-position four-way solenoid valve (3) are in one group, and the shaftless paper holder hydraulic station has two groups, which are respectively located on both sides of the two Y-type three-position four-way solenoid valves (4) and are symmetrically arranged.
5. The shaftless paper holder hydraulic station according to claim 3, wherein a P port oil inlet of the integrated oil path block (1) is connected with one joint of the three-way joint (14), the other joint is connected with a pressure gauge (15), the third structure is connected with a hydraulic oil high-pressure pipeline, a one-way valve (16), a hydraulic pump and an oil absorption filter screen are connected in series on the hydraulic oil high-pressure pipeline in the direction of the oil tank and finally communicated into the oil tank, a T port oil outlet of the integrated oil path block (1) is connected with an oil return pipeline, the oil return pipeline is communicated into the oil tank, an oil temperature and oil level meter is arranged in the oil tank, and an air filter is arranged on an air vent communicated with the outside of the oil tank.
6. The creel-free hydraulic station according to claim 5, wherein the oil tank is arranged in a shell, an inner shaft type motor for driving a hydraulic pump is arranged at the upper part of the shell, the pressure gauge (15) and the oil temperature and level gauge are arranged on the side surface of the shell, and the air filter is arranged on the upper side surface of the shell.
7. The shaftless paper holder hydraulic station according to claim 6, wherein an integrated oil path block (1) is arranged on the side face of the upper portion of the shell, six placing positions are arranged on the integrated oil path block (1), an M-type three-position four-way electromagnetic valve (2) is placed at the first position from the left side of the integrated oil path block (1) in the arranging sequence, an O-type three-position four-way electromagnetic valve (3) is placed at the second position, a Y-type three-position four-way electromagnetic valve (4) is placed at the third position, a throttling valve (12) and a hydraulic control one-way valve (13) are respectively superposed below the Y-type three-position four-way electromagnetic valve (4) is placed at the fourth position, a throttling valve (12) and a hydraulic control one-way valve (13) are superposed below the Y-type three-position four-way electromagnetic valve (3), an overflow valve (11) is superposed below the fifth position, and an M-type three-position four-way electromagnetic valve (2) is placed at the sixth position.
8. The shaftless paper holder hydraulic station according to claim 7, wherein said overflow valve (11) is positioned below the O-type three-position four-way solenoid valve (3) in the second position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121296404.1U CN217539151U (en) | 2021-06-10 | 2021-06-10 | Shaftless paper frame hydraulic station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121296404.1U CN217539151U (en) | 2021-06-10 | 2021-06-10 | Shaftless paper frame hydraulic station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217539151U true CN217539151U (en) | 2022-10-04 |
Family
ID=83417786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121296404.1U Expired - Fee Related CN217539151U (en) | 2021-06-10 | 2021-06-10 | Shaftless paper frame hydraulic station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217539151U (en) |
-
2021
- 2021-06-10 CN CN202121296404.1U patent/CN217539151U/en not_active Expired - Fee Related
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Granted publication date: 20221004 |