CN214888072U - Hydraulic oil cylinder and mechanical equipment - Google Patents
Hydraulic oil cylinder and mechanical equipment Download PDFInfo
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- CN214888072U CN214888072U CN202121285437.6U CN202121285437U CN214888072U CN 214888072 U CN214888072 U CN 214888072U CN 202121285437 U CN202121285437 U CN 202121285437U CN 214888072 U CN214888072 U CN 214888072U
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Abstract
The utility model relates to an operating machine technical field especially relates to a hydraulic cylinder and operating machine, and hydraulic cylinder includes cylinder body and mount pad, is equipped with pole chamber and rodless chamber in the cylinder body, and the mount pad sets up the one end at rodless chamber place in the cylinder body, and the mount pad is equipped with first passageway and second passageway, first passageway with have pole chamber intercommunication, second passageway and rodless chamber intercommunication. The utility model discloses an at the integrated a plurality of passageways that set up of mount pad, simplified the structure that needs to install a plurality of valve unit outside hydraulic cylinder, reduced the holistic occupation space of hydraulic cylinder, simple to operate.
Description
Technical Field
The utility model relates to an operating machinery technical field especially relates to a hydraulic cylinder and operating machinery.
Background
The traditional hydraulic oil cylinder needs to realize oil circuit control, such as oil circuit locking, flow regulation and other functions, so as to control the flow rate of hydraulic oil. The hydraulic cylinder structure formed by arranging valve elements such as a hydraulic lock and a balance valve outside the hydraulic cylinder and connecting the valve elements through a plurality of external pipelines occupies a large space, the hydraulic cylinder inside the arm support or limited in space cannot be suitable for use, oil pipe pipelines are more, the association relation among valve bodies is complex, the installation steps are complex, the cost is higher, and the disassembly, assembly and maintenance are more troublesome. And along with the increase of power, the requirement on hydraulic flow is also increased, and the traditional oil cylinder control oil way can only meet the requirement by increasing the number of conventional hydraulic cartridge valves, so that the space volume and the cost are greatly increased, and the practical engineering application is severely limited and influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydraulic cylinder and operation machinery for solve among the prior art for realizing hydraulic cylinder's oil circuit control, need arrange a large amount of valve bodies and pipelines on the hydro-cylinder, it is bulky, occupation space two is big and install complicated defect, realize having solved traditional hydro-cylinder structure and need great space, can't be suitable for at inside or the limited hydro-cylinder in space of cantilever crane, the oil pipe pipeline is more, the effect of the loaded down with trivial details problem of installation step.
The utility model provides a hydraulic cylinder, including cylinder body and mount pad, be equipped with pole chamber and rodless chamber in the cylinder body, the mount pad set up in the cylinder body the one end at rodless chamber place, the mount pad is equipped with first passageway and second passageway, first passageway with there is pole chamber intercommunication, the second passageway with rodless chamber intercommunication.
According to the utility model provides a pair of hydraulic cylinder, the mount pad still is equipped with the third passageway, be equipped with first valve body in the second passageway, the one end of third passageway with first passageway intercommunication, the other end with first valve body intercommunication.
According to the utility model provides a pair of hydraulic cylinder, the mount pad still is equipped with the fourth passageway, be equipped with the second valve body in the first passageway, the one end of fourth passageway with second valve body intercommunication, the other end with fourth passageway intercommunication.
According to the utility model provides a pair of hydraulic cylinder, the third passageway with the crisscross setting of fourth passageway slant.
According to the utility model provides a pair of hydraulic cylinder, the second valve body is the balanced valve, first valve body is balanced valve or check valve.
According to the utility model provides a pair of hydraulic cylinder, the mount pad still is equipped with the fifth passageway, the fifth passageway with the second passageway intercommunication, be equipped with the third valve body in the fifth passageway.
According to the utility model provides a pair of hydraulic cylinder, be equipped with the mounting hole on the mount pad, the mount pad passes through set up the fastener in the mounting hole and be connected with the host computer mechanism.
According to the utility model provides a pair of hydraulic cylinder, the mount pad is constructed and is detected mouthful and second, first detection mouthful with first passageway intercommunication, the second detect the mouth with second passageway intercommunication.
According to the utility model provides a pair of hydraulic cylinder, the cylinder body includes cylinder, piston rod, piston and uide bushing, the piston set up in the one end of piston rod, the piston is located in the cylinder, the mount pad set up in the one end of cylinder, the uide bushing is located the piston rod outside, and set up in the other end of cylinder.
The utility model also provides a mechanical equipment, include as above hydraulic cylinder.
The utility model provides a hydraulic cylinder, the integration sets up first passageway and second passageway on the mount pad, can pour into hydraulic oil and will have the hydraulic oil discharge of pole intracavity into the pole chamber in the cylinder body through first passageway, can pour into hydraulic oil and discharge the hydraulic oil of no pole intracavity into the no pole chamber in the cylinder body through the second passageway to make hydraulic oil can flow into and flow out the cylinder body, guarantee the normal function of cylinder body. The utility model discloses an at the integrated a plurality of passageways that set up of mount pad, simplified the structure that needs to install a plurality of valve unit outside hydraulic cylinder, reduced the holistic occupation space of hydraulic cylinder, simple to operate.
In addition to the technical problems addressed by the present invention, the technical features of the constituent technical solutions, and the advantages brought by the technical features of these technical solutions, which have been described above, other technical features of the present invention and the advantages brought by these technical features will be further described with reference to the accompanying drawings, or can be learned by practice of the present invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is one of the schematic structural diagrams of the hydraulic cylinder provided by the present invention;
fig. 2 is a second schematic structural diagram of the hydraulic cylinder provided by the present invention;
fig. 3 is a schematic structural view of a mounting seat of the hydraulic oil cylinder provided by the present invention;
FIG. 4 is a schematic view of a hydraulic cylinder according to the present invention;
reference numerals:
100: a cylinder body; 110: a rod cavity; 120: a rodless cavity;
130: a cylinder barrel; 140: a piston rod; 150: a piston;
160: a guide sleeve; 200: a mounting seat; 210: a first channel;
220: a second channel; 230: a third channel; 240: a fourth channel;
250: a fifth channel; 260: mounting holes; 280: a first detection port;
290: a second detection port; 211: a first oil port; 221: a second oil port;
300: a first valve body; 400: a second valve body; 500: a third valve body;
600: an oil pipe; 170: and a through hole.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the embodiment of the present invention provides a hydraulic cylinder, including cylinder body 100 and mount pad 200, be equipped with in cylinder body 100 and have pole chamber 110 and no pole chamber 120, mount pad 200 sets up in the one end at the position of no pole chamber 120 in cylinder body 100, mount pad 200 is equipped with first passageway 210 and second passageway 220, first passageway 210 with have pole chamber 110 to communicate, second passageway 220 with no pole chamber 120 to communicate.
The utility model discloses hydraulic cylinder, the integration sets up first passageway 210 and second passageway 220 on the mount pad 200, can pour into hydraulic oil and will have the hydraulic oil discharge in the pole chamber 110 to the pole chamber 110 that has in the cylinder body 100 through first passageway 210, can pour into hydraulic oil and will have the hydraulic oil discharge in the pole chamber 120 to the rodless chamber 120 in the cylinder body 100 through second passageway 220 to make hydraulic oil can flow into and flow out cylinder body 100, guarantee the normal function of cylinder body 100. The utility model discloses an at the integrated a plurality of passageways that set up of mount pad 200, simplified the structure that needs to install a plurality of valve banks outside hydraulic cylinder, reduced the holistic occupation space of hydraulic cylinder, simple to operate.
When the hydraulic oil is injected into the first passage 210, the hydraulic oil flows into the rod chamber 110 through the first passage 210 to drive the piston rod 140 to move toward the mounting seat 200, and the space of the rod chamber 110 gradually increases; during the movement of the piston rod 140, the compression space of the rodless cavity 120 is gradually reduced, and the hydraulic oil in the rodless cavity 120 flows out of the rodless cavity 120 after passing through the second channel 220, so that the piston rod 140 can rapidly move towards the direction close to the mounting seat 200. When the hydraulic oil is injected into the second passage 220, the hydraulic oil flows into the rod-less chamber 120 through the second passage 220 to drive the piston rod 140 to move in a direction away from the mounting seat 200, and the space of the rod-less chamber 120 gradually increases; during the movement of the piston rod 140, the space for the rod chamber 110 to be squeezed is gradually reduced, and the hydraulic oil in the rod chamber 110 flows out of the rod chamber 110 through the first passage 210, so that the piston rod 140 can move rapidly toward the mounting seat 200.
In this embodiment, one port of the first passage 210 of the mount 200 is connected to one end of the oil pipe 600, the other end of the oil pipe 600 is connected through the through hole 170 of the cylinder block 100, the through hole 170 communicates with the rod chamber 110, so that the hydraulic oil in the rod chamber 110 flows into the first passage 210 through the oil pipe 600, and the hydraulic oil injected from the first passage 210 flows into the rod chamber 110 through the oil pipe 600. Because the mounting seat 200 is arranged close to one end of the rodless cavity 120, the first channel 210 is communicated with the rod cavity 110 in an auxiliary way through the oil pipe 600, and the second channel 220 is communicated with the rodless cavity 120 directly through a port of the second channel 220 and the rodless cavity 120, so that the oil cylinder pipeline structure is further simplified, and the mounting is simple and convenient.
In this embodiment, a first oil port 211 is formed at one port of the first passage 210, the other port is communicated with the rod chamber 110 through the oil pipe 600, a second oil port 221 is formed at one port of the second passage 220, the other port is directly communicated with the rodless chamber 120, and the mounting seat 200 is provided with the oil port, the passage and the mounting hole 260, so that hydraulic oil can flow into the cylinder body 100 through the oil port and the passage respectively or keep the cylinder body 100 outside through the passage and the oil port respectively, and the hydraulic oil passage circulation and assembly connection functions are integrated.
According to the utility model provides an embodiment, mount pad 200 still is equipped with third passageway 230, is equipped with first valve body 300 in the second passageway 220, and the one end and the first passageway 210 intercommunication of third passageway 230, the other end and first valve body 300 intercommunication. In this embodiment, the third channel 230 is used as a branch of the first channel 210 and is communicated with the second channel 220, and the first valve body 300 is arranged in the second channel 220 and is used for controlling the opening and closing of the second channel 220. The mounting seat 200 is integrally provided with the first passage, the second passage, the third passage and the first valve body 300, the structural design that a plurality of conventional hydraulic cartridge valve combinations are mounted on an oil cylinder in the prior art is replaced, the oil circuit of a control valve group on the hydraulic oil cylinder is simplified, and the number of the cartridge valves is reduced. The problems that a traditional oil cylinder structure needs a large space, an oil cylinder in the arm support or limited in space cannot be suitable for use, oil pipes and pipelines are more, and installation steps are complex are solved.
When the hydraulic oil is injected into the first passage 210, a part of the hydraulic oil flows into the rod chamber 110 through the first passage 210 to drive the piston rod 140 to move in a direction close to the mounting seat 200, the space of the rod chamber 110 gradually increases, another part of the hydraulic oil impacts and opens the first valve body 300 through the third passage 230 to open the second passage 220, during the movement of the piston rod 140, the extrusion space of the rodless chamber 120 gradually decreases, and the hydraulic oil in the rodless chamber 120 flows out of the rodless chamber 120 through the second passage 220 to enable the piston rod 140 to move in a direction close to the mounting seat 200 quickly.
According to the present invention, the mounting seat 200 further comprises a fourth channel 240, a second valve body 400 is disposed in the first channel 210, one end of the fourth channel 240 is connected to the second valve body 400, and the other end is connected to the fourth channel 240. In this embodiment, the fourth channel 240 is used as a branch of the second channel 220 and is communicated with the first channel 210, and the second valve body 400 is disposed in the first channel 210 and is used for controlling the opening and closing of the first channel 210. The first passage, the second passage, the fourth passage and the second valve body 400 are integrally arranged on the mounting seat 200, so that the oil passages of the control valve group on the hydraulic oil cylinder are simplified, and the number of the cartridge valves is reduced.
When the hydraulic oil is injected into the second passage 220, a part of the hydraulic oil flows into the rodless cavity 120 through the second passage 220 to drive the piston rod 140 to move in a direction away from the mounting seat 200, the space of the rodless cavity 120 gradually increases, another part of the hydraulic oil impacts and opens the second valve body 400 through the fourth passage 240 to open the first passage 210, the extrusion space of the rod cavity 110 gradually decreases in the movement process of the piston rod 140, and the hydraulic oil in the rod cavity 110 flows out of the rod cavity 110 through the first passage 210, so that the piston rod 140 can rapidly move in a direction away from the mounting seat 200.
In another embodiment, the third channel 230 is used as a branch of the first channel 210 and is communicated with the second channel 220, and a first valve body 300 is arranged in the second channel 220 and is used for controlling the opening and closing of the second channel 220; the fourth channel 240 is used as a branch of the second channel 220 and is communicated with the first channel 210, and the second valve body 400 is arranged in the first channel 210 and is used for controlling the opening and closing of the first channel 210.
When the hydraulic oil is injected into the first passage 210, a part of the hydraulic oil flows into the rod chamber 110 through the first passage 210 to drive the piston rod 140 to move in a direction close to the mounting seat 200, the space of the rod chamber 110 gradually increases, another part of the hydraulic oil impacts and opens the second valve body 400, the hydraulic oil flowing through the second valve body 400 flows into the third passage 230 to impact and open the first valve body 300, so that the second passage 220 is opened, in the movement process of the piston rod 140, the extrusion space of the rodless chamber 120 gradually decreases, and the hydraulic oil in the rodless chamber 120 flows out of the rodless chamber 120 after passing through the second passage 220, so that the piston rod 140 can rapidly move in a direction close to the mounting seat 200.
When the hydraulic oil is injected into the second passage 220, a part of the hydraulic oil flows into the rodless cavity 120 through the second passage 220 to drive the piston rod 140 to move in a direction away from the mounting seat 200, the space of the rodless cavity 120 gradually increases, another part of the hydraulic oil impacts and opens the first valve body 300, the hydraulic oil flowing through the first valve body 300 flows into the fourth passage 240 to impact and open the second valve body 400, so that the first passage 210 is opened, the extruded space of the rod cavity 110 gradually decreases in the movement process of the piston rod 140, and the hydraulic oil in the rod cavity 110 flows out of the rod cavity 110 after passing through the first passage 210, so that the piston rod 140 can quickly move in a direction away from the mounting seat 200.
According to an embodiment of the present invention, the third channel 230 and the fourth channel 240 are diagonally staggered. In this embodiment, the first valve body 300 and the second valve body 400 are axially arranged in parallel to each other, that is, the first valve body 300 and the second valve body 400 are axially arranged in parallel to each other in the X direction in fig. 3, and the third channel 230 and the fourth channel 240 are both obliquely arranged channels, that is, the third channel 230 and the fourth channel 240 intersect with each other and are arranged between the first valve body 300 and the second valve body 400 in a staggered manner. The hydraulic oil flow direction effect of the first channel 210 and the second channel 220 on the first valve body 300 and the second valve body 400 can be guaranteed, the channels and the valve bodies can be integrated orderly, the channels are independent, and the position relation is not influenced.
According to an embodiment of the present invention, the second valve body 400 is a balance valve, and the first valve body 300 is a balance valve or a check valve. In this embodiment, the second valve body 400 needs to be a balance valve, and the first valve body 300 can be a check valve or a balance valve, that is, a balance valve is disposed in the first passage 210, and a check valve or a balance valve is disposed in the second passage 220, so that when the piston rod 140 extends out, a load is present, the extension speed is controlled, and when the load is too large when the piston rod 140 extends out, the balance valve overflows to protect the entire structure from being damaged.
According to the present invention, the mounting base 200 further comprises a fifth channel 250, the fifth channel 250 is communicated with the second channel 220, and a third valve body 500 is disposed in the fifth channel 250. In this embodiment, the fifth passage 250 is branched from the second passage 220 to communicate with the second passage 220, and the third valve body 500 is provided in the fifth passage 250 to perform pressure protection on the second passage 220 and the first valve body 300. When hydraulic oil is injected into the second passage 220, a part of the hydraulic oil flows into the rodless cavity 120 through the second passage 220 to drive the piston rod 140 to move in a direction away from the mounting seat 200, if the pressure in the rodless cavity 120 is too high in the process, the piston rod 140 cannot move, that is, the hydraulic oil cannot be injected smoothly, the hydraulic oil enters the fifth passage 250 from the second passage 220 and is discharged through the third valve body 500, and therefore pressure protection is achieved under the condition that the thrust force is too high. In this embodiment, the third valve body 500 may adopt a relief valve.
According to the utility model provides an embodiment, be equipped with mounting hole 260 on mount pad 200, mount pad 200 sets up the fastener through mounting hole 260 and is connected with the main mechanism. In this embodiment, the fastening member may be a pin, the middle portion of the mounting base 200 is provided with a mounting hole 260, and the mounting hole 260 may be correspondingly provided as a pin hole. After the mounting seat 200 is connected, sealed and fixed with the cylinder body 100, the pin shaft penetrates through the pin hole to be connected with a host machine component, so that the hydraulic oil cylinder is assembled on the host machine component conveniently. The utility model discloses collect the passageway circulation and the assembly connection function in an organic whole of hydraulic oil, structural design is simple reasonable, effectively reduces the space and occupies. In other embodiments, the mounting holes 260 and the fasteners may also adopt other matching structural forms, such as bolts, threaded holes, etc., so as to ensure that the installation is convenient and firm.
According to one embodiment of the present disclosure, the mounting base 200 is configured with a first detection port 280 and a second detection port 290, the first detection port 280 is communicated with the first channel 210, and the second detection port 290 is communicated with the second channel 220. In this embodiment, the first detection port 280 and the second detection port 290 may be both provided with a pressure monitoring device, such as a sensor, a pressure gauge, etc., to respectively detect the pressure of the first channel 210 and the second channel 220 in real time, so as to facilitate real-time control of the operating state and maintenance of the hydraulic cylinder. The detection position of the first detection port 280 is located behind the second valve body 400 of the first passage 210 in the direction in which the hydraulic oil is injected, and the detection position of the second detection port 290 is located behind the first valve body 300 of the second passage 220 in the direction in which the hydraulic oil is injected.
According to the utility model provides an embodiment, cylinder body 100 includes cylinder 130, piston rod 140, piston 150 and uide bushing 160, and piston 150 sets up in the one end of piston rod 140, and piston 150 is located cylinder 130, and mount pad 200 sets up in the one end of cylinder 130, and the piston rod 140 outside is located to the uide bushing 160 cover, and sets up in the other end of cylinder 130. In this embodiment, the piston 150 is fixedly connected to an end of the piston rod 140, the piston rod 140 is movably disposed in the cylinder 130, two ends of the cylinder 130 are respectively sealed and mounted by the guide sleeve 160 and the mounting seat 200, the installation seat 200, the piston 150 and the cylinder 130 enclose a rodless cavity 120, and the rod cavity 110 is enclosed among the piston rod 140, the piston 150, the cylinder 130 and the guide sleeve 160. A through hole 170 is provided at a position of the cylinder 130 corresponding to the rod chamber 110, and the oil pipe 600 is communicated with the rod chamber 110 through the through hole 170.
The embodiment of the utility model provides a still provide a mechanical equipment, include the hydraulic cylinder as above-mentioned embodiment. The utility model discloses mechanical equipment can adopt mechanical equipment such as excavator, hoist, and hydraulic cylinder can be applied to positions such as the hydraulic oil way in the mechanical equipment.
When used, the first valve element 300, the second valve element 400, and the third valve element 500 are not limited to a shut valve, an electric valve, an electromagnetic valve, or other types of valves that can be opened and closed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A hydraulic cylinder, its characterized in that: the cylinder body is internally provided with a rod cavity and a rodless cavity, the mounting seat is arranged at one end of the rodless cavity in the cylinder body, the mounting seat is provided with a first channel and a second channel, the first channel is communicated with the rod cavity, and the second channel is communicated with the rodless cavity.
2. A hydraulic ram according to claim 1 wherein: the mounting seat is further provided with a third channel, a first valve body is arranged in the second channel, one end of the third channel is communicated with the first channel, and the other end of the third channel is communicated with the first valve body.
3. A hydraulic ram according to claim 2, wherein: the mounting seat is further provided with a fourth channel, a second valve body is arranged in the first channel, one end of the fourth channel is communicated with the second valve body, and the other end of the fourth channel is communicated with the fourth channel.
4. A hydraulic ram according to claim 3, wherein: the third channels and the fourth channels are obliquely and alternately arranged.
5. A hydraulic ram according to claim 3, wherein: the second valve body is a balance valve, and the first valve body is a balance valve or a one-way valve.
6. A hydraulic ram according to claim 2, wherein: the mounting seat is further provided with a fifth channel, the fifth channel is communicated with the second channel, and a third valve body is arranged in the fifth channel.
7. A hydraulic ram according to claim 1 wherein: the mounting seat is provided with a mounting hole, and the mounting seat is connected with the main mechanism through a fastener arranged in the mounting hole.
8. A hydraulic ram according to claim 1 wherein: the mount is configured with a first detection port in communication with the first passage and a second detection port in communication with the second passage.
9. A hydraulic ram according to any one of claims 1 to 8, wherein: the cylinder body includes cylinder, piston rod, piston and uide bushing, the piston set up in the one end of piston rod, the piston is located in the cylinder, the mount pad set up in the one end of cylinder, the uide bushing cover is located the piston rod outside, and set up in the other end of cylinder.
10. A mechanical device, characterized by: comprising a hydraulic ram as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121285437.6U CN214888072U (en) | 2021-06-09 | 2021-06-09 | Hydraulic oil cylinder and mechanical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121285437.6U CN214888072U (en) | 2021-06-09 | 2021-06-09 | Hydraulic oil cylinder and mechanical equipment |
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| CN214888072U true CN214888072U (en) | 2021-11-26 |
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| CN202121285437.6U Active CN214888072U (en) | 2021-06-09 | 2021-06-09 | Hydraulic oil cylinder and mechanical equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251027A (en) * | 2021-06-09 | 2021-08-13 | 娄底市中兴液压件有限公司 | Hydraulic oil cylinder and mechanical equipment |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251027A (en) * | 2021-06-09 | 2021-08-13 | 娄底市中兴液压件有限公司 | Hydraulic oil cylinder and mechanical equipment |
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