CN218177606U - Hydraulic cylinder piston assembly and hydraulic cylinder - Google Patents
Hydraulic cylinder piston assembly and hydraulic cylinder Download PDFInfo
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- CN218177606U CN218177606U CN202222745008.3U CN202222745008U CN218177606U CN 218177606 U CN218177606 U CN 218177606U CN 202222745008 U CN202222745008 U CN 202222745008U CN 218177606 U CN218177606 U CN 218177606U
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Abstract
The utility model relates to a hydraulic equipment technical field particularly, relates to a pneumatic cylinder piston assembly and pneumatic cylinder, first pressure release spare includes interconnect's first sealed cock portion and first trigger portion, first trigger portion is followed a port of first intercommunication through-hole stretches out, first sealed cock portion with the sealed cooperation of first intercommunication through-hole, first pressure release spare with first intercommunication through-hole sliding fit, so that first sealed cock portion can be to keeping away from the direction of port remove and with the inner wall separation of first intercommunication through-hole, first pressure release spare except other parts of first sealed cock portion with be formed with the oil clearance between the inner wall of first intercommunication through-hole, first elastic component with the inner wall of first intercommunication through-hole with first pressure release spare all cooperates. The present application is directed to at least one of the problems related to the background art, and provides a piston assembly of a hydraulic cylinder and a hydraulic cylinder.
Description
Technical Field
The application relates to the technical field of hydraulic equipment, in particular to a piston assembly of a hydraulic cylinder and the hydraulic cylinder.
Background
Hydraulic cylinders have been widely used in industry as hydraulic actuators. When the existing hydraulic cylinder is used, the strokes of the piston and the piston rod are difficult to control accurately, and the piston rod are easy to move over the stroke, so that a driven part is damaged. At present, in order to accurately control the moving stroke of a piston and a piston rod and avoid the problem of overtravel, a mode of controlling the moving stroke of the piston and the piston rod through electric control is provided in the field. But the electric control mode has relatively high failure rate and relatively low stability.
SUMMERY OF THE UTILITY MODEL
The present application is directed to at least one of the problems related to the background art, and provides a piston assembly of a hydraulic cylinder and a hydraulic cylinder.
In order to achieve the purpose, the following technical scheme is adopted in the application:
an aspect of the present application provides a hydraulic cylinder piston assembly, including piston, first pressure release spare and first elastic component be formed with first intercommunication through-hole on the piston, first pressure release spare with first elastic component all install in first intercommunication through-hole, first pressure release spare includes interconnect's first seal plug portion and first trigger part, first trigger part is followed a port of first intercommunication through-hole stretches out, first seal plug portion with first intercommunication through-hole seal fit, first pressure release spare with first intercommunication through-hole sliding fit, so that first seal plug portion can be to keeping away from the direction of port remove and with the inner wall separation of first intercommunication through-hole, first pressure release spare except that other parts of first seal plug portion with be formed with the through-oil clearance between the inner wall of first intercommunication through-hole, first elastic component with the inner wall of first intercommunication through-hole with first pressure release spare all cooperates.
Optionally, the sealing device further comprises a first connecting rod arranged in the first through hole, one end of the first connecting rod is connected to the first sealing plug portion, the other end of the first connecting rod is a threaded end, the first triggering portion is a first adjusting nut, and the first adjusting nut is in threaded connection with the threaded end.
The technical scheme has the beneficial effects that: through making first trigger part be the first adjusting nut that can adjust the position relative the head rod, can adjust the position of the relative piston of first adjusting nut, and then the stroke of piston when first trigger part is triggered, and then according to the stroke of the nimble adjustable hydraulic cylinder of the public of difference.
Optionally, the first elastic element is a compression spring, and the compression spring is sleeved on the first connecting rod.
The technical scheme has the beneficial effects that: the compression spring is easy to install, and two ends of the compression spring only need to be abutted with two sides which move relatively in a one-to-one correspondence mode.
Optionally, the first communicating through hole is a stepped hole, one end of the compression spring abuts against a step in the stepped hole, and the other end of the compression spring abuts against the first adjusting nut.
The technical scheme has the beneficial effects that: the relative position of the step and the first adjusting nut is adjusted by adjusting the relative position of the first connecting rod and the first adjusting nut, so that the pressure borne by the compression spring is adjusted, and the stroke of the hydraulic cylinder is changed by changing the position of the first adjusting nut.
Optionally, the first seal plug portion abuts against an inner wall of the first communication through hole in a length direction of the first communication through hole.
The technical scheme has the beneficial effects that: under pressure spring's effect, the sealed effect of first sealing plug portion and the inner wall butt of first intercommunication through-hole is better.
Optionally, the first communication through hole penetrates through the piston in the axial direction of the piston, the port is a first port, another port of the first communication through hole is a second port, the second port is a conical shape, a semi-spherical shape or a pyramid shape, the shape of the first sealing plug portion corresponds to the shape of the second port, and the size of the first sealing plug portion corresponds to the size of the second port.
The technical scheme has the beneficial effects that: through the design of the shape of the second port and the design of the shape of the first sealing plug part, on one hand, the position of the first sealing plug part relative to the second port can be limited, and on the other hand, the first sealing plug part and the second port can be tightly attached under the action of the first elastic piece, so that a better sealing effect is formed.
Optionally, the hydraulic cylinder further comprises a second pressure relief piece and a second elastic piece, a second communication through hole is formed in the piston, the second pressure relief piece and the second elastic piece are both mounted in the second communication through hole, the second pressure relief piece comprises a second sealing plug portion and a second trigger portion which are connected with each other, the second sealing plug portion is used for being arranged close to a rod cavity of the hydraulic cylinder, the second trigger portion is used for extending out of the second communication through hole from a direction away from the second sealing plug portion, the second sealing plug portion is in sealing fit with the second communication through hole, the second pressure relief piece is in sliding fit with the second communication through hole so that the second sealing plug portion can move relative to the piston towards the rod cavity and is separated from the inner wall of the second communication through hole, an oil passing gap is formed between the other portion of the second pressure relief piece except the second sealing plug portion and the inner wall of the second communication through hole, and the second elastic piece is matched with the inner wall of the second communication through hole and the second pressure relief piece; the first trigger part is used for being close to the rod cavity, and the first sealing plug part is used for being close to the rodless cavity of the hydraulic cylinder.
The technical scheme has the beneficial effects that: when the piston moves towards one side of the rod cavity and reaches a position required by the moving stroke towards the side, the first trigger part is in contact with the cylinder cover at one side of the rod cavity, so that pressure relief is realized, and the purpose of limiting the stroke of the hydraulic cylinder at one side of the rod cavity is further achieved; when the piston moves towards one side of the rodless cavity, the second trigger part is in contact with the cylinder cover on one side of the rodless cavity, pressure relief is achieved, and the purpose of limiting the stroke of the hydraulic cylinder on one side of the rodless cavity is achieved.
Optionally, the connecting rod is arranged in the second communication through hole, one end of the second connecting rod is connected to the second sealing plug portion, the other end of the second connecting rod is a threaded end, the second triggering portion is a second adjusting nut, and the second adjusting nut is in threaded connection with the threaded end.
The technical scheme has the beneficial effects that: the second trigger part is a second adjusting nut which can adjust the position relative to the second connecting rod, the position of the second adjusting nut relative to the piston can be adjusted, and then the stroke of the piston when the second trigger part is triggered can be adjusted according to different disclosures and flexible adjusting strokes of the hydraulic cylinder.
Optionally, the second elastic element is a compression spring, and the compression spring is sleeved on the second connecting rod; the second communicating through hole is a stepped hole, one end of the compression spring is abutted against a step in the stepped hole, and the other end of the compression spring is abutted against the second adjusting nut; the second seal plug portion abuts against an inner wall of the second communication through hole in a length direction of the second communication through hole; the port of the second communication through hole matched with the second sealing plug part is conical, semispherical or pyramid, and the second sealing plug part is conical, semispherical or pyramid.
Another aspect of the present application provides a hydraulic cylinder, including the cylinder body and the hydraulic cylinder piston assembly that the present application provided, hydraulic cylinder piston assembly install in the cylinder body.
The technical scheme provided by the application can achieve the following beneficial effects:
the hydraulic cylinder piston assembly and the hydraulic cylinder provided by the embodiment of the application replace the stroke of the existing electric control mode control hydraulic cylinder through a mechanical structure so as to reduce the over-travel probability of the hydraulic cylinder, and are relatively simple in structure, relatively low in failure rate of the electric control mode and relatively high in stability.
Additional features of the present application and advantages thereof will be set forth in the description which follows, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It should be apparent that the drawings in the following description are embodiments of the present application and that other drawings may be derived from those drawings by a person of ordinary skill in the art without inventive step.
FIG. 1 is a schematic cross-sectional view of one embodiment of a hydraulic cylinder provided in an embodiment of the present disclosure;
FIG. 2 is an enlarged partial view of FIG. 1 at A;
FIG. 3 is a cross-sectional structural schematic view of another embodiment of a hydraulic cylinder provided in an embodiment of the present application;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is a schematic cross-sectional view of an embodiment of a piston assembly of a hydraulic cylinder according to an embodiment of the present disclosure.
Reference numerals are as follows:
01-a first connecting rod; 02-a first elastic member;
03-cylinder body; 04-a piston rod;
05-a piston; 06-rodless cavity;
07-a rod cavity; 08-a first sealing plug portion;
09-a first adjusting nut; 10-a second sealing plug portion;
11-a second adjusting nut; 12-a second elastic member;
13-second connecting rod.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. 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 present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 to 5, an aspect of the present application provides a piston assembly of a hydraulic cylinder, including a piston 05, a first relief member and a first elastic member 02, a first communication through hole being formed in the piston 05, the first relief member and the first elastic member 02 being mounted in the first communication through hole, the first relief member including a first packing portion 08 and a first trigger portion connected to each other, the first trigger portion protruding from a port of the first communication through hole, the first packing portion 08 being in sealing engagement with the first communication through hole, the first relief member being in sliding engagement with the first communication through hole so that the first packing portion 08 can move in a direction away from the port and be separated from an inner wall of the first communication through hole, a through oil gap being formed between other portions of the first relief member than the first packing portion 08 and the inner wall of the first communication through hole, and the first elastic member 02 being in engagement with both the inner wall of the first communication through hole and the first elastic member 02.
In this application embodiment, when pneumatic cylinder piston assembly was applied to the pneumatic cylinder, first intercommunication through-hole was used for the pole chamber and the rodless chamber that have of intercommunication pneumatic cylinder.
In the hydraulic cylinder piston assembly provided by the embodiment of the application, when the first trigger part of the first pressure relief piece is not triggered, the first trigger part extends out of one port of the first communication through hole, the first sealing plug part 08 is in sealing fit with the first communication through hole, when the first trigger part is triggered, the first sealing plug part 08 moves towards the direction far away from the port, and when the first sealing plug part 08 is separated from the inner wall of the first communication through hole, the first communication through hole is communicated with two sides of the piston 05, and the acting force generated by the triggering enables the first elastic piece 02 to be elastically deformed; when the first trigger part is separated from the triggering force, the first pressure relief part moves under the elastic force of the first elastic part 02, so that the first communication through hole is blocked again by the first seal plug part 08; when the hydraulic cylinder piston assembly is applied to a hydraulic cylinder, the first communication through hole is used for communicating a rod cavity and a rodless cavity of the hydraulic cylinder, and the pressure difference between the rod cavity and the rodless cavity does not enable the first elastic piece 02 to elastically deform, so that the first sealing plug portion 08 is separated from the first communication through hole; the length of the first trigger part extending out of the port can be set according to specific requirements during manufacturing of the hydraulic cylinder piston assembly, the first trigger part can also move relative to the first sealing plug part 08 to adjust the position of the first trigger part, when the hydraulic cylinder piston assembly moves to a position required by the stroke of the hydraulic cylinder, the first trigger part can touch a cylinder cover of the hydraulic cylinder, the first sealing plug part 08 is separated from the inner wall of the first communication through hole, so that the sealing of the first sealing plug part 08 on the first communication through hole is relieved, the rod cavity 07 and the rodless cavity 06 of the hydraulic cylinder are communicated due to the existence of an oil passing gap, the pressure relief is further achieved to balance the pressure between the rod cavity 07 and the rodless cavity 06, the piston 05 and the piston rod 04 can be stopped in time, and the hydraulic cylinder is not prone to overtravel. Moreover, because the first trigger part can realize pressure relief when colliding with the cylinder cover, the moving speed of the piston 05 is reduced, the piston 05 collides with the cylinder cover in time, the colliding force is weakened, and the damage possibly formed when the piston 05 collides with the cylinder cover is reduced.
The hydraulic cylinder piston assembly provided in the embodiment of the application replaces the stroke of the existing electric control mode control hydraulic cylinder through a mechanical structure so as to reduce the probability of over travel of the hydraulic cylinder, and is relatively simple in structure, relatively low in failure rate of the electric control mode and relatively high in stability.
Optionally, the hydraulic cylinder piston assembly that this application embodiment provided still includes and sets up first connecting rod 01 in the first through-hole, the one end of first connecting rod 01 connect in first sealing plug portion 08, the other end of first connecting rod 01 is the screw thread end, first trigger part is first adjusting nut 09, first adjusting nut 09 with screw thread end threaded connection. Through making first trigger part be the first adjusting nut 09 that can adjust the position relative to the head rod 01, can adjust the position of the relative piston 05 of first adjusting nut 09, and then the stroke of piston 05 when first trigger part is triggered, and then according to the nimble stroke of adjusting the pneumatic cylinder of the public of difference.
Optionally, the first elastic element 02 is a compression spring, and the compression spring is sleeved on the first connecting rod 01. The compression spring is easy to install, and two ends of the compression spring only need to be abutted with two sides which move relatively in a one-to-one correspondence mode. Of course, the first elastic member 02 may be an extension spring.
Optionally, the first communicating through hole is a stepped hole, one end of the compression spring abuts against a step in the stepped hole, and the other end of the compression spring abuts against the first adjusting nut 09. The relative position of the step and the first adjusting nut 09 is adjusted by adjusting the relative position of the first connecting rod 01 and the first adjusting nut 09, so that the pressure borne by the compression spring is adjusted, and the stroke of the hydraulic cylinder is changed by changing the position of the first adjusting nut 09.
Alternatively, the first seal plug portion 08 abuts against an inner wall of the first communication through hole in a length direction of the first communication through hole. Under the effect of pressure spring, first sealed stopper portion 08 and the sealed effect of the inner wall butt of first intercommunication through-hole are better.
Optionally, the first communication through hole penetrates through the piston 05 in the axial direction of the piston 05, the port is a first port, another port of the first communication through hole is a second port, the second port is a conical shape, a semispherical shape or a pyramid shape, the shape of the first seal plug portion 08 corresponds to the shape of the second port, and the size of the first seal plug portion 08 corresponds to the size of the second port. Through the design of the shape of the second port and the design of the shape of the first seal plug portion 08, on one hand, the position of the first seal plug portion 08 relative to the second port can be limited, and on the other hand, the first seal plug portion 08 and the second port can be tightly attached under the action of the first elastic piece 02, so that a good sealing effect is formed.
Optionally, the hydraulic cylinder piston assembly provided in this embodiment of the present application further includes a second relief piece and a second elastic piece 12, a second communication through hole is formed in the piston 05, the second relief piece and the second elastic piece 12 are both mounted in the second communication through hole, the second relief piece includes a second sealing plug portion 10 and a second trigger portion that are connected to each other, the second sealing plug portion 10 is configured to be disposed near the rod cavity 07 of the hydraulic cylinder, the second trigger portion is configured to protrude from the second communication through hole in a direction away from the second sealing plug portion 10, the second sealing plug portion 10 is in sealing engagement with the second communication through hole, the second relief piece is in sliding engagement with the second communication through hole so that the second sealing plug portion 10 can move relative to the piston 05 in the direction of the rod cavity 07 and separate from the inner wall of the second communication through hole, an oil clearance is formed between the other portion of the second relief piece except for the second sealing plug portion 10 and the inner wall of the second communication through hole, and the second elastic piece 12 is in communication with the second communication through hole; the first trigger part is used for being arranged close to the rod cavity 07, and the first sealing plug part 08 is used for being arranged close to the rodless cavity 06 of the hydraulic cylinder. When the piston 05 moves towards one side of the rod cavity 07 and the piston 05 reaches a position required by the moving stroke towards the side, the first trigger part is in contact with a cylinder cover at one side of the rod cavity 07 to realize pressure relief, and the purpose of limiting the stroke of the hydraulic cylinder at one side of the rod cavity 07 is further achieved; when the piston 05 moves towards one side of the rodless cavity 06, the second trigger part is in contact with a cylinder cover on one side of the rodless cavity 06 to realize pressure relief, and then the purpose of limiting the stroke of the hydraulic cylinder on one side of the rodless cavity 06 is achieved.
Optionally, the hydraulic cylinder piston assembly that this application embodiment provided still includes and sets up second connecting rod 13 in the second through-hole that communicates, the one end of second connecting rod 13 connect in second sealing plug portion 10, the other end of second connecting rod 13 is the screw thread end, the second trigger part is second adjusting nut 11, second adjusting nut 11 with screw thread end threaded connection. Through the second adjusting nut 11 that makes the second trigger part be can be relative second connecting rod 13 adjusting position, can adjust the position of second adjusting nut 11 relative piston 05, and then the stroke of piston 05 when the second trigger part is triggered, and then according to the nimble stroke of adjusting the pneumatic cylinder of the disclosure of difference.
Optionally, the second elastic element 12 is a compression spring, and the compression spring is sleeved on the second connecting rod 13; the second communication through hole is a stepped hole, one end of the compression spring is abutted with a step in the stepped hole, and the other end of the compression spring is abutted with the second adjusting nut 11; the second seal plug portion 10 abuts against the inner wall of the second communication through hole in the longitudinal direction of the second communication through hole; the port of the second communication through hole, which is matched with the second sealing plug part 10, is conical, semispherical or pyramid-shaped, and the second sealing plug part 10 is conical, semispherical or pyramid-shaped.
Another aspect of the present application provides a hydraulic cylinder, including cylinder body 03 and the hydraulic cylinder piston assembly provided in the embodiments of the present application, the hydraulic cylinder piston assembly is installed in cylinder body 03.
The pneumatic cylinder that this application embodiment provided has adopted the pneumatic cylinder piston subassembly that this application embodiment provided, replaces the stroke of current automatically controlled mode control pneumatic cylinder through mechanical structure to reduce the probability that the pneumatic cylinder overtravel, the structure is simple relatively, and relatively the automatically controlled mode fault rate is lower, and stability is higher relatively. In the embodiment of the present application, the hydraulic cylinder piston assembly preferably includes a piston rod 04, and the piston 05 is fixedly connected to the piston rod 04.
For better explanation of the hydraulic cylinder piston assembly and the hydraulic cylinder provided by the present application, the present application also provides an application example of the hydraulic cylinder piston assembly and the hydraulic cylinder, in the application example, the hydraulic cylinder piston assembly may also be referred to as a hydraulic cylinder stroke limit protection device, the first communication through hole and the second communication through hole may be collectively referred to as a pressure relief hole, the first adjusting nut 09 and the second adjusting nut 11 may be collectively referred to as an adjusting nut, the first seal plug portion 08 and the second seal plug portion 10 may be collectively referred to as a valve head, the first connecting rod 01 and the second connecting rod 13 may be collectively referred to as a valve stem, and the first elastic member 02 and the second elastic member 12 may be collectively referred to as a tightening spring. The application example is specifically as follows:
this application example provides a pneumatic cylinder stroke limit protection device, and the device sets up on the pneumatic cylinder piston, and the device comprises piston, bolt valve rod, adjusting nut, the top spring that has the pressure release hole.
The piston is provided with a pressure relief hole penetrating through two end faces, one end in the pressure relief hole is provided with a step for accommodating the jacking spring and the adjusting nut, the other end is provided with a valve port, and the shape of the valve port can be a cone shape, a spherical surface shape or a cambered surface cone shape.
The diameter of the bolt valve rod is slightly smaller than the pressure relief hole, one end of the bolt valve rod is provided with a thread matched with the adjusting nut, the other end of the bolt valve rod is provided with a valve head, the shape of the valve head can be a cone shape or a spherical surface shape or a cambered surface cone shape, and the valve head is matched with a valve port of the pressure relief hole of the piston to realize closing or opening action.
The adjusting nut is matched with the bolt valve rod and screwed out of the adjusting hydraulic cylinder through screwing.
The jacking spring jacks up the adjusting nut to enable the pressure relief valve port and the valve rod valve head to be closed before the adjusting nut is not pressed into the pressure relief hole step by the cylinder cover, so that the hydraulic cylinder works normally.
When the adjusting nut is pushed to the cylinder cover and the adjusting nut is retracted into the step of the pressure relief hole, the high-pressure cavity and the low-pressure cavity of the hydraulic cylinder are communicated, and the pressure of the oil cylinder is relieved.
The invention has the advantages of simple structure and low cost. The accurate control of the hydraulic cylinder can be realized only by screwing in and out the adjusting nut, and the hydraulic cylinder is prevented from overtravel in work. The hydraulic cylinder control device is suitable for all use scenes with high requirements on the action precision and stability of the hydraulic cylinder. The hydraulic cylinder can be accurately controlled in time without complex electric control or induction equipment, and the hydraulic cylinder is not easily overloaded by controlling the stroke of the hydraulic cylinder in a pressure relief mode. The pure mechanical control is more stable than the electric control mode, and the failure rate is low.
Similarly, the limiting mechanisms can also be arranged on the pistons in opposite directions, one adjusting nut is arranged in the direction of the bottom surface of the hydraulic cylinder, and the nut pushes the hydraulic cylinder on the bottom surface of the hydraulic cylinder to release pressure. The other adjusting nut is arranged on one side of the cylinder cover, and the nut pushes the cylinder cover hydraulic cylinder to release pressure. The reciprocating bidirectional action limit control of the hydraulic cylinder is realized, and the overload caused by the action of the hydraulic cylinder to the limit position can be prevented.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The hydraulic cylinder piston assembly is characterized by comprising a piston, a first pressure relief piece and a first elastic piece, wherein a first communication through hole is formed in the piston, the first pressure relief piece and the first elastic piece are mounted in the first communication through hole, the first pressure relief piece comprises a first sealing plug portion and a first trigger portion which are connected with each other, the first trigger portion extends out of one port of the first communication through hole, the first sealing plug portion is in sealing fit with the first communication through hole, the first pressure relief piece is in sliding fit with the first communication through hole so that the first sealing plug portion can move in the direction away from the port and is separated from the inner wall of the first communication through hole, oil passing gaps are formed between the other portions of the first pressure relief piece except the first sealing plug portion and the inner wall of the first communication through hole, and the first elastic piece is matched with the inner wall of the first communication through hole and the first pressure relief piece.
2. The hydraulic cylinder piston assembly as recited in claim 1 further comprising a first connecting rod disposed within the first communication through bore, one end of the first connecting rod being connected to the first plug portion, the other end of the first connecting rod being a threaded end, the first trigger being a first adjusting nut, the first adjusting nut being threaded with the threaded end.
3. The hydraulic cylinder-piston assembly of claim 2 wherein said first resilient member is a compression spring, said compression spring being nested within said first connecting rod.
4. The hydraulic cylinder piston assembly of claim 3, wherein the first communication through-hole is a stepped bore, one end of the compression spring abuts a step in the stepped bore, and the other end of the compression spring abuts the first adjusting nut.
5. The hydraulic cylinder piston assembly according to claim 4, wherein the first seal plug portion abuts against an inner wall of the first communication through hole in a length direction of the first communication through hole.
6. The hydraulic cylinder-piston assembly as claimed in claim 5 wherein the first communication through-hole extends through the piston in an axial direction of the piston, the port is a first port, another port of the first communication through-hole is a second port, the second port is conical, hemispherical or pyramidal, the shape of the first sealing plug portion corresponds to the shape of the second port, and the size of the first sealing plug portion corresponds to the size of the second port.
7. The hydraulic cylinder piston assembly according to any one of claims 1 to 6, further comprising a second relief member and a second elastic member, wherein a second communication through hole is formed in the piston, the second relief member and the second elastic member are both mounted in the second communication through hole, the second relief member includes a second sealing plug portion and a second trigger portion that are connected to each other, the second sealing plug portion is configured to be disposed adjacent to a rod chamber of the hydraulic cylinder, the second trigger portion is configured to extend out of the second communication through hole from a direction away from the second sealing plug portion, the second sealing plug portion is in sealing engagement with the second communication through hole, the second relief member is slidably engaged with the second communication through hole so that the second sealing plug portion can move relative to the piston in the direction of the rod chamber and is separated from an inner wall of the second communication through hole, an oil clearance is formed between a portion of the second relief member other than the second sealing plug portion and the inner wall of the second communication through hole, and the second elastic member is engaged with both the inner wall of the second communication through hole and the second relief member; the first trigger part is used for being close to the rod cavity, and the first sealing plug part is used for being close to the rodless cavity of the hydraulic cylinder.
8. The hydraulic cylinder piston assembly of claim 7, further comprising a second connecting rod disposed within the second communication through bore, one end of the second connecting rod being connected to the second plug portion, the other end of the second connecting rod being a threaded end, the second trigger portion being a second adjusting nut, the second adjusting nut being in threaded connection with the threaded end.
9. The hydraulic cylinder piston assembly of claim 8, wherein the second resilient member is a compression spring that is fitted around the second connecting rod; the second communication through hole is a stepped hole, one end of the compression spring is abutted with a step in the stepped hole, and the other end of the compression spring is abutted with the second adjusting nut; the second seal plug portion abuts against an inner wall of the second communication through hole in a length direction of the second communication through hole; the port of the second communication through hole matched with the second sealing plug part is conical, semispherical or pyramid, and the second sealing plug part is conical, semispherical or pyramid.
10. Hydraulic cylinder, characterized in that it comprises a cylinder body and a cylinder piston assembly according to any one of claims 1-9, which cylinder piston assembly is mounted in the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222745008.3U CN218177606U (en) | 2022-10-18 | 2022-10-18 | Hydraulic cylinder piston assembly and hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222745008.3U CN218177606U (en) | 2022-10-18 | 2022-10-18 | Hydraulic cylinder piston assembly and hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218177606U true CN218177606U (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222745008.3U Active CN218177606U (en) | 2022-10-18 | 2022-10-18 | Hydraulic cylinder piston assembly and hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218177606U (en) |
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2022
- 2022-10-18 CN CN202222745008.3U patent/CN218177606U/en active Active
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