CN209761884U - Pressure cylinder and hydraulic equipment - Google Patents
Pressure cylinder and hydraulic equipment Download PDFInfo
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- CN209761884U CN209761884U CN201822084227.5U CN201822084227U CN209761884U CN 209761884 U CN209761884 U CN 209761884U CN 201822084227 U CN201822084227 U CN 201822084227U CN 209761884 U CN209761884 U CN 209761884U
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Abstract
The utility model provides a pressure cylinder and hydraulic equipment, pressure cylinder includes: the piston is movably arranged in the cylinder barrel and comprises a body and a connecting part, the connecting part is cylindrical, the body is connected with one end of the connecting part, and the body and the connecting part enclose to form an accommodating cavity; the inner part of the core tube is provided with a channel penetrating through the core tube, the core tube is matched with the piston, and at least part of the core tube is arranged in the accommodating cavity; the end face of the connecting part, the outer wall of the core pipe and the inner wall of the cylinder barrel form a third cavity. The utility model provides a pressure cylinder is through changing the pressure in the second cavity, and then realizes the regulation to the pressure in the third cavity for the pressure in the high nip of pressure cylinder can be regulated and control, makes pressure cylinder's use nimble more, convenient.
Description
Technical Field
The utility model relates to a pneumatic cylinder technical field particularly, relates to a pressure cylinder and hydraulic equipment.
Background
At present, a pressure cylinder comprises a low-pressure cavity and a high-pressure cavity, one end of a piston is in contact with the low-pressure cavity, the other end of the piston is in contact with the high-pressure cavity, the contact area of the piston and the low-pressure cavity is larger than that of the piston and the high-pressure cavity, after hydraulic oil enters the low-pressure cavity under preset pressure, preset pressure is applied to the piston, the piston is then applied to the hydraulic oil in the high-pressure cavity under the preset pressure, and due to the change of the contact area, the pressure in the high-pressure cavity is larger than the pressure in the low-pressure cavity, so that pressure boosting is.
in the related art, since the area ratio of the two ends of the piston is fixed, the pressure cannot be adjusted while pressurizing, and the pressurization can only be performed at a preset pressurization ratio, so that the use of the pressurization cylinder is not flexible enough, and inconvenience is caused in production.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
To this end, a first aspect of the present invention provides a pressure cylinder.
A second aspect of the present invention provides a hydraulic apparatus.
In view of this, the utility model discloses the first aspect provides a pressure cylinder, includes: the piston is movably arranged in the cylinder barrel and comprises a body and a connecting part, the connecting part is cylindrical, the body is connected with one end of the connecting part, and the body and the connecting part enclose to form an accommodating cavity; the inner part of the core tube is provided with a channel penetrating through the core tube, the core tube is matched with the piston, and at least part of the core tube is arranged in the accommodating cavity; the end face of the connecting part, the outer wall of the core pipe and the inner wall of the cylinder barrel form a third cavity.
The utility model provides a pressure cylinder, set up piston and core pipe in the cylinder, the one end of the body of piston encloses into first cavity with the inner wall of cylinder, the inner wall of piston encloses into the second cavity with the passageway of core pipe, the terminal surface of connecting portion, the outer wall of core pipe encloses into the third cavity with the inner wall of cylinder, after letting in the medium of certain pressure in to the first cavity, certain pressure is applyed to the piston body to the medium, and then promote the piston motion, because the area of contact of piston and third cavity is less than the area of contact of piston and first cavity, so make the internal pressure of third cavity be greater than the pressure in the first cavity, when the internal pressure of second cavity is 0, pressure ratio in pressure and the third cavity in the first cavity, equal to the area of contact of piston and third cavity, with the ratio of piston and first cavity area of contact. Through setting up the second cavity, behind the medium to letting in certain pressure in the second cavity, the pressure that the medium in the second cavity was applyed to the piston, it is opposite to the pressure that the medium in the first cavity was applyed to the piston, and then reduced the pressure that the third cavity received, through changing the pressure in the second cavity, and then realize the regulation to the pressure in the third cavity, make the pressure in the high nip of pressure cylinder can be regulated and control, make the use of pressure cylinder more nimble, convenient.
The pressure applied by the medium in the first cavity to the piston is P1, the contact area between the medium in the first cavity and the piston is S1, the pressure of the medium in the first cavity is F1, the pressure applied by the piston to the medium in the second cavity is P2, the contact area between the medium in the second cavity and the piston is S2, the pressure of the medium in the second cavity is F2, the pressure applied by the medium in the third cavity to the piston is P3, the contact area between the medium in the third cavity and the piston is S3, and the pressure of the medium in the third cavity is F3, wherein P1 is P2+ P3, i.e. F1/S1 is F2/S2+ F3/S3, when F1, S1, S2 and S3 are fixed values, F2 is increased and F3 is decreased, and vice versa, the pressure in the third cavity can be adjusted by adjusting the pressure in the second cavity.
specifically, the ratio of the pressure of the medium in the third cavity to the pressure of the medium in the first cavity is greater than or equal to 1 and less than or equal to 5, i.e., 1 is greater than or equal to P3/P1 is less than or equal to 5, and the ratio of the pressure of the medium in the third cavity to the pressure of the medium in the first cavity can be regulated and controlled between 1 and 5.
Additionally, the utility model provides an among the above-mentioned technical scheme pressurized cylinder can also have following additional technical characterstic:
In the above technical solution, preferably, the pressure cylinder further includes: the first cylinder cover is buckled at one end of the cylinder barrel and is positioned on one side of the first cavity; the second cylinder cover is buckled at the other end of the cylinder barrel.
In this technical scheme, through setting up first cylinder cap and second cylinder cap, first cylinder cap lock is in first cavity one side to seal first cavity, and second cylinder cap lock closes the opposite side, in order to seal second cavity and third cavity.
In any one of the above technical solutions, preferably, the pressure cylinder further includes: the first port is arranged on the first cylinder cover or the cylinder barrel, and the first cavity is communicated with the first pressure source through the first port.
In the technical scheme, the first port is arranged, so that the first cavity is connected with a first pressure source, a medium with preset pressure is conveyed to the first cavity, the first pressure source can be a hydraulic station or an air pump, and the medium is hydraulic oil or air.
In any one of the above technical solutions, preferably, the pressure cylinder further includes: and the second port is arranged on the second cylinder cover, and the second cavity is communicated with a second pressure source through the second port.
in the technical scheme, the second opening is formed, so that the second cavity can be communicated with the second pressure source through the second opening, the second pressure source conveys media with different pressures into the second cavity, and the pressure of the media in the third cavity is adjusted. The second pressure source may be a hydraulic station or an air pump, and the medium may be hydraulic oil or air.
In any one of the above technical solutions, preferably, the pressure cylinder further includes: and the control valve is arranged on a pipeline between the second port and the second pressure source so as to regulate the pressure of the medium in the second cavity.
in the technical scheme, the control valve is arranged on a pipeline between the second port and the second pressure source, one end of the control valve is communicated with the second port, the other end of the control valve is communicated with the second pressure source, when the second pressure source conveys media into the second cavity, the media in the second cavity have different pressures by adjusting the control valve, the control of the pressure in the second cavity is realized, and the control of the pressure in the third cavity is further realized. The control valve may be a proportional valve. The proportional valve allows for precise control of the pressure of the medium in the second chamber.
In any one of the above technical solutions, preferably, the pressure cylinder further includes: and the third port is arranged on the second cylinder cover or the cylinder barrel, and the third cavity is connected with the working cavity through the third port.
in the technical scheme, the third opening is formed, the third cavity is connected with the working cavity through the third opening, high-pressure medium is conveyed into the working cavity, and the pressure of the medium can be adjusted according to the actual requirement of the working cavity. The working cavity can be a working cavity of an oil cylinder or an air cylinder or a working cavity of other mechanical equipment needing high-pressure medium.
In any one of the above technical solutions, preferably, the pressure cylinder further includes: the reversing valve is respectively communicated with the second cavity, the second pressure source, the third cavity and the working cavity; when the pressure cylinder is pressurized, the reversing valve is switched to a first preset gear, so that the second cavity is communicated with the second pressure source, and the third cavity is communicated with the working cavity; when the pressure cylinder is not pressurized, the reversing valve is switched to a second preset gear, so that the second cavity is disconnected with the second pressure source, and the second cavity, the third cavity and the working cavity are communicated.
In the technical scheme, by arranging the reversing valve, when the pressure cylinder needs to be pressurized, the reversing valve is switched to a first preset gear so that the second cavity is communicated with the second pressure source, and the third cavity is communicated with the working cavity; when the pressurization cylinder does not need pressurization, the reversing valve is switched to a second preset gear, so that the second cavity is disconnected with the second pressure source, the second cavity, the third cavity and the working cavity are communicated, the pressure of a medium output by the third cavity is controlled more accurately, when pressurization is not needed, the medium output by the third cavity can be realized by switching the reversing valve, energy is saved, the medium in the third cavity has a wider pressure range, and the pressurization cylinder is more flexible and convenient to use. The reversing valve is a four-way reversing valve.
In any one of the above technical solutions, preferably, the pressure cylinder further includes: the spring, the spring sets up in connecting portion, and one end is connected with the core pipe, and the other end is connected with the body.
In this technical scheme, through setting up the spring, the one end of spring is connected with the core pipe, and the other end is connected with the body, when realizing core pipe axial positioning, makes the piston reset fast.
In any one of the above technical solutions, preferably, the pressure cylinder further includes: and a displacement sensor disposed on the first cylinder head to detect a displacement of the piston.
In this technical scheme, through setting up displacement sensor, displacement sensor detectable piston's displacement, and then calculate the pressure in the first cavity according to the displacement of piston, realize proofreaying and correct the pressure in the first cavity for pressure in the first cavity is more accurate.
the utility model discloses the second aspect provides a hydraulic equipment, including any one of the above-mentioned technical scheme the pressure cylinder, consequently, this hydraulic equipment includes any one of the above-mentioned technical scheme whole beneficial effect of pressure cylinder.
In the above technical solution, preferably, the hydraulic device is a lifting platform or a walking beam furnace.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
Fig. 1 shows a cross-sectional view of a pressurized cylinder according to an embodiment of the present invention;
Fig. 2 shows a half-sectional view of a booster cylinder according to an embodiment of the present invention;
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
12 cylinder bores, 14 pistons, 142 body, 144 connecting part, 16 first cylinder cover, 18 second cylinder cover, 20 first port, 22 second port, 24 third port, 26 spring, 28 displacement sensor, 30 core tube, 32 first cavity, 34 second cavity and 36 third cavity.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
the pressure cylinder and hydraulic apparatus according to some embodiments of the present invention are described below with reference to fig. 1 and 2.
In an embodiment of the first aspect of the present invention, as shown in fig. 1 and 2, the present invention provides a pressure cylinder, including: the piston 14 is movably arranged in the cylinder barrel 12, the piston 14 comprises a body 142 and a connecting part 144, the connecting part 144 is cylindrical, the body 142 is connected with one end of the connecting part 144, and the body 142 and the connecting part 144 enclose to form an accommodating cavity; the inside of the core tube 30 is provided with a channel penetrating through the core tube 30, the core tube 30 is matched with the piston 14, and at least part of the core tube 30 is arranged in the accommodating cavity; the first cavity 32 is defined by one end of the body 142 and the inner wall of the cylinder 12, the second cavity 34 is defined by the inner wall of the piston 14 and the channel of the core tube 30, and the third cavity 36 is defined by the end face of the connecting portion 144, the outer wall of the core tube 30 and the inner wall of the cylinder 12.
In this embodiment, the piston 14 and the core tube 30 are disposed in the cylinder 12, one end of the body 142 of the piston 14 and the inner wall of the cylinder 12 define a first cavity 32, the inner wall of the piston 14 and the channel of the core tube 30 define a second cavity 34, the end surface of the connecting portion 144, the outer wall of the core tube 30 and the inner wall of the cylinder 12 define a third cavity 36, when a medium with a certain pressure is introduced into the first cavity 32, the medium applies a certain pressure to the body 142, thereby pushing the piston 14 to move, since the contact area of the piston 14 with the third chamber 36 is smaller than the contact area of the piston 14 with the first chamber 32, so that the pressure in the third chamber 36 is greater than the pressure in the first chamber 32, when the pressure in the second chamber 34 is 0, the pressure in the first chamber 32 to the third chamber 36 is equal to the ratio of the contact area of the piston 14 with the third chamber 36 to the contact area of the piston 14 with the first chamber 32. Through setting up the second cavity 34, behind the medium of letting in certain pressure in to the second cavity 34, the pressure that the medium in the second cavity 34 was applyed to piston 14, it is opposite to the pressure that the medium in the first cavity 32 was applyed to piston 14, and then reduced the pressure that the third cavity 36 received, through changing the pressure in the second cavity 34, and then realize the regulation to the pressure in the third cavity 36, make the pressure in the high nip of pressure cylinder can be regulated and control, make the use of pressure cylinder more nimble, convenient.
the pressure applied to the piston 14 by the medium in the first cavity 32 is P1, the contact area between the medium in the first cavity 32 and the piston 14 is S1, the pressure of the medium in the first cavity 32 is F1, the pressure applied to the piston 34 by the piston 14 is P2, the contact area between the medium in the second cavity 34 and the piston 14 is S2, the pressure of the medium in the second cavity 34 is F2, the pressure applied to the piston 14 by the medium in the third cavity 36 is P3, the contact area between the medium in the third cavity 36 and the piston 14 is S3, the pressure of the medium in the third cavity 36 is F3, wherein P1 is P2+ P3, that is, F1/S1 is F2/S2+ F3/S3, when F1, S1, S2 and S3 are fixed values, F2 is increased, F3 is decreased, and vice versa, adjustment of the pressure within the third chamber 36 may be accomplished by adjusting the pressure within the second chamber 34.
Specifically, the ratio of the pressure of the medium in the third cavity 36 to the pressure of the medium in the first cavity 32 is greater than or equal to 1 and less than or equal to 5, i.e., 1. ltoreq. P3/P1. ltoreq.5, and the ratio of the pressure of the medium in the third cavity 36 to the pressure of the medium in the first cavity 32 can be controlled between 1 and 5.
Specifically, a seal ring and a guide ring are provided between the connecting portion 144 and the cylinder tube 12, and a seal ring and a guide ring are provided between the core tube 30 and the connecting portion 144.
In an embodiment of the present invention, preferably, as shown in fig. 1 and 2, the pressure cylinder further includes: the first cylinder cover 16 is buckled at one end of the cylinder barrel 12 and is positioned at one side of the first cavity 32; the second head 18 is fastened to the other end of the cylinder tube 12.
In this embodiment, by providing the first cylinder head 16 and the second cylinder head 18, the first cylinder head 16 is fastened to one side of the first cavity 32 to seal the first cavity 32, and the second cylinder head 18 is fastened to the other side to seal the second cavity 34 and the third cavity 36.
In an embodiment of the present invention, preferably, as shown in fig. 1, the pressure cylinder further includes: a first port 20, the first port 20 being disposed in the first cylinder head 16 or the cylinder bore 12, the first chamber 32 being in communication with a first pressure source via the first port 20.
In this embodiment, the first port 20 is arranged such that the first chamber 32 is connected to a first pressure source, which may be a hydraulic or pneumatic station, for delivering a medium with a predetermined pressure to the first chamber 32, the medium being hydraulic oil or gas.
In an embodiment of the present invention, preferably, as shown in fig. 1, the pressure cylinder further includes: a second port 22, the second port 22 being disposed in the second cylinder head 18, and the second chamber 34 being in communication with a second pressure source via the second port 22.
In this embodiment, the second port 22 is arranged so that the second chamber 34 can communicate with a second pressure source through the second port 22, and the second pressure source supplies media with different pressures into the second chamber 34, thereby adjusting the pressure of the media in the third chamber 36. The second pressure source may be a hydraulic station or an air pump, and the medium may be hydraulic oil or air.
In an embodiment of the present invention, preferably, the pressure cylinder further includes: a control valve is arranged in line between the second port 22 and the second pressure source for regulating the pressure of the medium in the second chamber 34.
In this embodiment, a control valve is arranged on a pipeline between the second port 22 and the second pressure source, one end of the control valve is communicated with the second port 22, and the other end of the control valve is communicated with the second pressure source, when the second pressure source delivers media into the second cavity 34, the media in the second cavity 34 has different pressures by adjusting the control valve, so as to control the pressure in the second cavity 34 and further control the pressure in the third cavity 36. The control valve may be a proportional valve. The proportional valve allows for precise control of the pressure of the medium in the second chamber 34.
In an embodiment of the present invention, preferably, as shown in fig. 1, the pressure cylinder further includes: and the third port 24, the third port 24 is arranged on the second cylinder cover 18 or the cylinder barrel 12, and the third cavity 36 is connected with the working cavity through the third port 24.
In this embodiment, by providing the third port 24, the third chamber body 36 is connected to the working chamber through the third port 24, and a medium with high pressure is supplied into the working chamber, and the pressure of the medium can be adjusted according to the actual needs of the working chamber. The working cavity can be a working cavity of an oil cylinder or an air cylinder or a working cavity of other mechanical equipment needing high-pressure medium.
In an embodiment of the present invention, preferably, the pressure cylinder further includes: the reversing valve is respectively communicated with the second cavity 34, the second pressure source, the third cavity 36 and the working cavity; when the pressure cylinder is pressurized, the reversing valve is switched to a first preset gear, so that the second cavity 34 is communicated with the second pressure source, and the third cavity 36 is communicated with the working cavity; when the pressure cylinder is not pressurized, the directional control valve is switched to a second preset gear, so that the second cavity 34 is disconnected from the second pressure source, and the second cavity 34, the third cavity 36 and the working cavity are communicated.
In this embodiment, by providing the reversing valve, when the pressure cylinder needs to be pressurized, the reversing valve is switched to the first preset gear, so that the second cavity 34 is communicated with the second pressure source, and the third cavity 36 is communicated with the working cavity; when the pressure cylinder does not need pressurization, the reversing valve is switched to a second preset gear, so that the second cavity 34 is disconnected with the second pressure source, the second cavity 34, the third cavity 36 and the working cavity are communicated, the pressure of the medium output by the third cavity 36 is controlled more accurately, when pressurization is not needed, the pressure can be realized by switching the reversing valve, energy is saved, meanwhile, the medium in the third cavity 36 has a wider pressure range, and the pressure cylinder is more flexible and convenient to use. The reversing valve is a four-way reversing valve.
In an embodiment of the present invention, preferably, as shown in fig. 1, the pressure cylinder further includes: and the spring 26 is arranged in the connecting part 144, one end of the spring 26 is connected with the core pipe 30, and the other end of the spring 26 is connected with the body 142.
In this embodiment, the spring 26 is provided such that one end of the spring 26 is connected to the barrel 30 and the other end is connected to the body 142, thereby allowing the piston 14 to be quickly repositioned while axially positioning the barrel 30.
In an embodiment of the present invention, preferably, as shown in fig. 1, the pressure cylinder further includes: a displacement sensor 28, the displacement sensor 28 being provided on the first cylinder head 16 to detect displacement of the piston 14.
In this embodiment, by providing the displacement sensor 28, the displacement sensor 28 can detect the displacement of the piston 14, and then calculate the pressure in the first cavity 32 according to the displacement of the piston 14, so as to correct the pressure in the first cavity 32, and make the pressure in the first cavity 32 more accurate.
In an embodiment of the second aspect of the present invention, the present invention provides a hydraulic device, including any one of the above embodiments, of a pressure cylinder, and therefore, the hydraulic device includes any one of the above embodiments.
in an embodiment of the present invention, preferably, the hydraulic device is a lifting platform or a walking beam furnace.
in the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A booster cylinder, characterized by comprising:
A cylinder barrel;
The piston is matched with the inner wall of the cylinder barrel and movably arranged in the cylinder barrel, the piston comprises a body and a connecting part, the connecting part is cylindrical, the body is connected with one end of the connecting part, and the body and the connecting part enclose to form an accommodating cavity;
The core tube is internally provided with a channel penetrating through the core tube, the core tube is matched with the piston, and at least part of the core tube is arranged in the accommodating cavity;
the end face of the connecting part, the outer wall of the core tube and the inner wall of the cylinder barrel form a third cavity.
2. The booster cylinder of claim 1, further comprising:
the first cylinder cover is buckled at one end of the cylinder barrel and is positioned on one side of the first cavity;
And the second cylinder cover is buckled at the other end of the cylinder barrel.
3. The booster cylinder of claim 2, further comprising:
The first port is arranged on the first cylinder cover or the cylinder barrel, and the first cavity is communicated with a first pressure source through the first port.
4. the booster cylinder of claim 3, further comprising:
And the second port is arranged on the second cylinder cover, and the second cavity is communicated with a second pressure source through the second port.
5. The booster cylinder of claim 4, further comprising:
A control valve disposed in the conduit between the second port and the second pressure source to regulate a pressure of the medium within the second chamber.
6. The booster cylinder of claim 4, further comprising:
And the third port is arranged on the second cylinder cover or the cylinder barrel, and the third cavity is connected with the working cavity through the third port.
7. the booster cylinder of claim 6, further comprising:
The reversing valve is respectively communicated with the second cavity, the second pressure source, the third cavity and the working cavity;
When the pressure cylinder is pressurized, the reversing valve is switched to a first preset gear, so that the second cavity is communicated with the second pressure source, and the third cavity is communicated with the working cavity;
When the pressure cylinder is not pressurized, the reversing valve is switched to a second preset gear, so that the second cavity is disconnected with the second pressure source, and the second cavity, the third cavity and the working cavity are communicated.
8. The booster cylinder according to any one of claims 1 to 7, further comprising:
And the spring is arranged in the connecting part, one end of the spring is connected with the core pipe, and the other end of the spring is connected with the body.
9. The booster cylinder according to any one of claims 2 to 7, further comprising:
A displacement sensor disposed on the first cylinder head to detect displacement of the piston.
10. A hydraulic apparatus, characterized by comprising a booster cylinder according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822084227.5U CN209761884U (en) | 2018-12-12 | 2018-12-12 | Pressure cylinder and hydraulic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822084227.5U CN209761884U (en) | 2018-12-12 | 2018-12-12 | Pressure cylinder and hydraulic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209761884U true CN209761884U (en) | 2019-12-10 |
Family
ID=68746446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822084227.5U Active CN209761884U (en) | 2018-12-12 | 2018-12-12 | Pressure cylinder and hydraulic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209761884U (en) |
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2018
- 2018-12-12 CN CN201822084227.5U patent/CN209761884U/en active Active
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Address after: Room 461, No. 59, Beijiu Road, Heping District, Shenyang, Liaoning 110000 Patentee after: Liaoning Qianyi Huanneng Technology Co.,Ltd. Address before: Room 461, No. 59, Beijiu Road, Heping District, Shenyang, Liaoning 110000 Patentee before: SHENYANG GEZHU SCIENCE AND TECHNOLOGY CO.,LTD. |