CN114992190A - Sealing piston of hydraulic oil cylinder and application thereof - Google Patents

Sealing piston of hydraulic oil cylinder and application thereof Download PDF

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Publication number
CN114992190A
CN114992190A CN202210383849.6A CN202210383849A CN114992190A CN 114992190 A CN114992190 A CN 114992190A CN 202210383849 A CN202210383849 A CN 202210383849A CN 114992190 A CN114992190 A CN 114992190A
Authority
CN
China
Prior art keywords
sealing
piston
channel
piston body
oil cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210383849.6A
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Chinese (zh)
Inventor
胡旭奇
胡少聪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHAOGUAN RUIHE HYDRAULIC MACHINERY MANUFACTURING CO LTD
Original Assignee
SHAOGUAN RUIHE HYDRAULIC MACHINERY MANUFACTURING CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHAOGUAN RUIHE HYDRAULIC MACHINERY MANUFACTURING CO LTD filed Critical SHAOGUAN RUIHE HYDRAULIC MACHINERY MANUFACTURING CO LTD
Priority to CN202210383849.6A priority Critical patent/CN114992190A/en
Publication of CN114992190A publication Critical patent/CN114992190A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F15B15/1452—Piston sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Actuator (AREA)

Abstract

The invention discloses a sealing piston of a hydraulic oil cylinder and application thereof, and relates to the technical field of hydraulic oil cylinders. The piston body is arranged in a first oil cylinder in a hydraulic system, and the first oil cylinder and the second oil cylinder are matched with other components to sequentially extend and retract the rods.

Description

Sealing piston of hydraulic oil cylinder and application thereof
Technical Field
The invention relates to the field of hydraulic oil cylinders, in particular to a sealing piston of a hydraulic oil cylinder and application thereof.
Background
The hydraulic oil cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy through linear reciprocating motion. When the reciprocating motion is performed, a speed reducing device can be omitted, no transmission gap exists, the motion is stable, the structure is simple, and the working efficiency is high.
The hydraulic oil cylinder structure comprises a first oil cylinder, a second oil cylinder and a hydraulic oil supply system, wherein a sealing piston is arranged in the first oil cylinder and is tightly attached to the inner wall of the first oil cylinder, and the sealing piston divides the interior of the first oil cylinder into a rod cavity and a rodless cavity; a first pipe body is arranged in the first channel, a second pipe body is arranged in the second channel, a third pipe body is arranged in the fourth channel, the first pipe body is sleeved in the second pipe body, the second pipe body is sleeved in the third pipe body, a cavity in the third pipe body is communicated with the third channel, a hydraulic oil supply system supplies oil to the first pipe body, the rod cavity and the rodless cavity at the same time, the hydraulic oil supply system supplies oil to the first pipe body at the same time when supplying oil to the rodless cavity, and a check valve is arranged at the joint of the hydraulic oil supply system and the rodless cavity of the first oil cylinder; the second oil cylinder is provided with a piston rod, the piston rod divides the inside of the first oil cylinder into a rod cavity and a rodless cavity, the piston rod extends out of the end face of the rod cavity, the first pipe body and the second pipe body are communicated with the rodless cavity of the second oil cylinder and control the communication or separation of the first pipe body and the second pipe body through a contact switch valve, and the third pipe body is communicated with the rod cavity of the second oil cylinder.
To make the first cylinder and the second cylinder extend the piston rod in turn and withdraw the piston rod in turn, even a plurality of cylinders extend the piston rod in turn and withdraw the piston rod in turn, the oil supply and the backflow of the rod cavity and the rodless cavity of the first cylinder and the rod cavity and the rodless cavity of the second cylinder need to be intelligently controlled and need to be completed by depending on the mutual cooperation of a plurality of components. The technical effects of sequentially retracting and sequentially releasing the rods cannot be achieved by the existing hydraulic oil cylinder, the sealing piston is an important component for achieving the effect, and the sealing piston which can be matched with the hydraulic oil cylinder to achieve the technical effects of sequentially retracting and sequentially releasing the rods is not disclosed in the market.
Disclosure of Invention
The invention discloses a sealing piston of a hydraulic oil cylinder and application thereof, solving the technical problems that: the hydraulic oil cylinder realizes extension and contraction through inputting hydraulic oil. In the process of realizing extension and retraction, the sealing piston is arranged in the hydraulic oil cylinder, only has the compression function and cannot be matched with the hydraulic oil cylinder to realize sequential extension and retraction.
In order to solve the technical problems, the invention provides the following optimized technical scheme:
a sealing piston of a hydraulic oil cylinder comprises a piston body, wherein the piston body is provided with a first channel extending along the axial direction of the piston body, the end part of the first channel is connected with a second channel, the end part of the second channel is connected with a third channel, the end part of the third channel is connected with a fourth channel, the radiuses of the first channel, the second channel, the third channel and the fourth channel are sequentially increased, the inner wall of the third channel is provided with a first piston port and a second piston port which extend along the radial direction of the piston body and are communicated with the outer wall of the piston body, a one-way valve is arranged in the second piston port, the radius of the head part of the piston body is larger than that of the tail part of the piston body, the check valve is arranged at the tail of the piston body, a flow opening is formed in one end face of the piston body and communicated with the second channel.
Further, the first passage is sleeved with a sealing plug.
Further, the sealing plug comprises a sealing head and a sealing rod, the sealing head and the sealing rod are both cylinders and are of an integrated structure, external threads are arranged on the outer wall of the sealing rod, an accommodating groove used for accommodating the sealing rod is formed in one end face of the piston body, and internal threads corresponding to the external threads are formed in the inner wall of the accommodating groove.
Further, the outer wall of the piston body is provided with a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring are respectively arranged on two sides of the first piston opening.
Furthermore, the outer wall of the piston body is provided with a first groove position and a second groove position for accommodating the first sealing ring and the second sealing ring.
Furthermore, the edge of the end face of the piston body, which is close to the sealing plug, is an inclined plane, a circular groove is formed in the middle of the end face of the sealing plug, the circulation port is arranged on the circular groove, the circular groove is communicated with the inclined plane outwards to form strip-shaped grooves, and the number of the strip-shaped grooves is four, and every two of the strip-shaped grooves are opposite in position.
Further, the diameter of the first sealing ring is larger than that of the second sealing ring, the diameter of the first sealing ring is equal to that of the first groove, and the diameter of the second sealing ring is equal to that of the second groove.
Further, the number of the communication ports is at least one, and the communication ports are provided around the sealing plug.
Further, the inner wall of the fourth channel is provided with threads.
The invention provides another technical scheme: the application of the sealing piston of the hydraulic oil cylinder is to apply the sealing piston to the hydraulic oil cylinder.
Compared with the prior art, the invention has the following beneficial effects:
the piston body provided by the invention is arranged in a first oil cylinder in a hydraulic oil cylinder system, the piston body is provided with four channels with different diameters, the four channels are used for connecting pipe bodies of the hydraulic oil cylinder to form three different pipelines, oil is supplied to the first pipe body connected with a second channel through a flow opening, oil is supplied to a third pipe body corresponding to the third channel through a first piston port and a second piston port, and the piston body is matched with other components of the hydraulic oil cylinder system to realize mutual circulation of hydraulic oil in the first oil cylinder and the second oil cylinder and realize sequential extension rods and sequential contraction rods of the first oil cylinder and the second oil cylinder.
Drawings
Fig. 1 is a schematic structural view of a piston body of the present invention.
Fig. 2 is a cross-sectional view of the piston body of the present invention.
In the figure: 100. a piston body; 101. a first channel; 102. a second channel; 103. a third channel; 104. a fourth channel; 105. a first piston port; 106. a second piston port; 107. a one-way valve; 108. a flow port; 109. a sealing plug; 110. a sealing head; 111. a sealing rod; 112. accommodating a tank; 113. a first seal ring; 114. a second seal ring; 115. a first slot position; 116. a second slot position; 117. a circular groove; 118. a strip-shaped groove; 200. a first pipe body; 201. a second tube body; 202. a third tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are 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.
The piston body 100 provided by the invention is arranged in a first oil cylinder which is connected in series with a hydraulic oil supply system and is in interference connection with the inner wall of the first oil cylinder in a plurality of hydraulic oil cylinders which are connected in series.
Referring to fig. 1 and 2, a sealing piston of a hydraulic cylinder includes a piston body 100, the piston body 100 is provided with a first channel 101 extending in an axial direction of the piston body 100, an end of the first channel 101 is connected with a second channel 102, an end of the second channel 102 is connected with a third channel 103, an end of the third channel 103 is connected with a fourth channel 104, radii of the first channel 101, the second channel 102, the third channel 103 and the fourth channel 104 are sequentially increased, the first channel 101 is provided with a first tube 200, the second channel 102 is provided with a second tube 201, the fourth channel 104 is provided with a third tube 202, wherein the first tube 200 is sleeved in the second tube 201, the second tube 201 is sleeved in the third tube 202, the third tube 202 is communicated with the third channel 103 and extends out of one end of the first cylinder, the piston body 100 is disposed in the first cylinder and divides the first cylinder into a rod chamber and a rodless chamber, the inner wall of the third channel 103 is provided with a first piston port 105 and a second piston port 106 which extend along the radial direction of the piston body 100 and are communicated with the outer wall of the piston body 100, a one-way valve 107 is arranged in the second piston port 106, the one-way valve 107 is used for preventing hydraulic oil in a rod cavity of the first oil cylinder from flowing into the third channel 103 through the second piston port 106, the hydraulic oil supply system is communicated with the rod cavity of the first oil cylinder through a pipeline, two pipelines which respectively correspond to the first piston port 105 and the second piston port 106 are arranged in the pipeline, the hydraulic oil supply system is communicated with a rodless cavity of the first oil cylinder through another pipeline, two pipelines which respectively correspond to the rodless cavity of the first oil cylinder and the first pipe body 200 are arranged in the pipeline, the radius of the head of the piston body 100 is larger than that of the tail of the piston body 100, namely, the head of the piston body 100 is in interference fit with the inner wall of the first oil cylinder, and the tail of the piston body 100 is communicated with the rod cavity of the first oil cylinder, the check valve 107 is arranged at the tail of the piston body 100, that is, the hydraulic oil in the third pipe 202 can flow back to the hydraulic oil supply system through the check valve 107, a flow port 108 is arranged on one end face of the piston body 100, the flow port 108 is communicated with the second channel 102, and the hydraulic oil in the rodless cavity of the first oil cylinder flows into the second channel 102 through the flow port 108.
The first passage 101 is sheathed by a sealing plug 109, it being understood that the inner wall of the sealing plug 109 is provided with teeth having a gripping effect on the inner wall of the first body 200 for generating friction.
The sealing plug 109 comprises a sealing head 110 and a sealing rod 111, the sealing head 110 and the sealing rod 111 are both cylinders and are of an integral structure, the outer wall of the sealing rod 111 is provided with external threads, one end face of the piston body 100 is provided with a containing groove 112 for containing the sealing rod 111, the inner wall of the containing groove 112 is provided with internal threads corresponding to the external threads, the external threads of the sealing rod 111 and the internal threads of the containing groove 112 are meshed with each other to fix the sealing plug 109 in the piston body 100, the sealing head 110 protrudes out of the end face of the piston body 100, and a sealing ring is arranged on the contact surface of the sealing head 110 and the piston body 100 to play a role in fastening.
The outer wall of the piston body 100 is provided with a first sealing ring 113 and a second sealing ring 114, the first sealing ring 113 and the second sealing ring 114 are respectively arranged at two sides of the first piston port 105, and the first sealing ring 113 and the second sealing ring 114 are respectively used for preventing hydraulic oil in a rodless cavity of the first oil cylinder and hydraulic oil in a rod cavity of the first oil cylinder from flowing into the first piston port 105.
The outer wall of the piston body 100 is provided with a first groove position 115 and a second groove position 116 for accommodating the first sealing ring 113 and the second sealing ring 114, and the first groove position 115 and the second groove position 116 are used for accommodating the first sealing ring 113 and the second sealing ring 114 and reducing the hardness of the outer wall of the piston body 100, so that the piston body can be conveniently installed in the first oil cylinder.
The edge of the end face of the piston body 100 close to the sealing plug 109 is an inclined plane, the middle of the end face is provided with a circular groove 117, the circulation port 108 is arranged on the circular groove 117, the circular groove 117 is outwards communicated with the inclined plane to form a strip-shaped groove 118, the number of the strip-shaped grooves 118 is four, and the positions of every two of the strip-shaped grooves 118 are opposite.
The diameter of the first sealing ring 113 is larger than that of the second sealing ring 114, the diameter of the first sealing ring 113 is equal to that of the first groove position 115, and the diameter of the second sealing ring 114 is equal to that of the second groove position 116. The first groove position 115 is arranged at the head of the piston body 100, the second groove position 116 is arranged at the tail of the piston body 100, and it can be understood from the above that the diameter of the first groove position 115 is larger than that of the second groove position 116, and because the head of the piston body 100 is in interference mounting with the inner wall of the first oil cylinder, the diameter of the first groove position 115 is larger, so that the hardness of the head of the piston body 100 can be effectively reduced, and the interference mounting of the head of the piston body 100 inside the first oil cylinder is facilitated.
The number of the communication ports 108 is at least one, and the communication ports 108 are provided around the sealing plug 109. The number of flow openings 108 is preferably four, four flow openings 108 being evenly distributed around the sealing plug 109.
The inner wall of the fourth channel 104 is provided with threads, and the threads have a friction effect on the outer wall of the third tube 202, so that the third tube 202 is prevented from sliding out of the fourth channel 104.
The invention provides another technical scheme: the sealing piston is applied to the hydraulic oil cylinder, and particularly, the principle of applying the sealing piston to the hydraulic oil cylinder is as follows:
when the rod is stretched: the hydraulic oil supply system inputs hydraulic oil to the rodless cavity of the first oil cylinder and the first pipe body 200 to push the piston body 100 to be pressed with the rod cavity, and the hydraulic oil in the rod cavity of the first oil cylinder flows back to the hydraulic oil supply system, so that the extension of the first oil cylinder can be completed, when the extension of the first oil cylinder is completed, the piston body 100 is arranged at the tail part of the rod cavity of the first oil cylinder, and at the moment, the first piston port 105 and the second piston port 106 of the piston body 100 can be communicated with the hydraulic oil supply system; the hydraulic oil in the rod cavity of the second cylinder body flows back into the third pipe body 202 and flows to the hydraulic oil supply system through the second piston port, and meanwhile, the hydraulic oil in the first pipe body 200 and the hydraulic oil in the second pipe body 201 flow into the rod cavity of the second oil cylinder, so that the extension rod of the second oil cylinder can be completed.
When the rod is contracted: the hydraulic oil supply system inputs hydraulic oil to a rod cavity of the first oil cylinder, the hydraulic oil in the rod cavity of the first oil cylinder flows into the third pipe body 202 through the first piston port 105 and then flows into a rod cavity of the second oil cylinder to push the piston rod to contract, meanwhile, the hydraulic oil in the rodless cavity flows into the first pipe body 200 and the second pipe body 201, the hydraulic oil in the second pipe body 201 flows into the rodless cavity of the first oil cylinder through the flow port 108, but the hydraulic oil in the second pipe body 201 cannot flow into the hydraulic oil supply system because the connecting part of the hydraulic oil supply system and the rodless cavity of the first oil cylinder is provided with the check valve 107, and the hydraulic oil in the first pipe body 200 can flow back to the hydraulic oil supply system, namely, the rod contraction of the second oil cylinder can be completed; when the rod retracting of the second oil cylinder is completed, the piston rod of the second oil cylinder props against the head of the second oil cylinder to trigger the contact switch valve, the contact switch valve is opened, the first pipe body 200 is communicated with the second pipe body 201, namely the first pipe body 200, the second pipe body 201 are communicated with the rodless cavity of the first oil cylinder, hydraulic oil in the rodless cavity of the first oil cylinder can also flow back to the hydraulic oil supply system, meanwhile, the hydraulic oil supply system supplies oil to the rod cavity of the first oil cylinder, because the second piston port 106 is provided with the one-way valve 107, the hydraulic oil in the rod cavity of the first oil cylinder cannot flow into the third pipe body 202, the sealing piston can be pushed to retract, and the rod retracting of the first oil cylinder is realized.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A sealing piston of a hydraulic oil cylinder is characterized by comprising a piston body, wherein the piston body is provided with a first channel extending along the axial direction of the piston body, the end part of the first channel is connected with a second channel, the end part of the second channel is connected with a third channel, the end part of the third channel is connected with a fourth channel, the radiuses of the first channel, the second channel, the third channel and the fourth channel are sequentially increased, the inner wall of the third channel is provided with a first piston port and a second piston port which extend along the radial direction of the piston body and are communicated with the outer wall of the piston body, a one-way valve is arranged in the second piston port, the radius of the head part of the piston body is larger than that of the tail part of the piston body, the check valve is arranged at the tail of the piston body, a flow opening is formed in one end face of the piston body and communicated with the second channel.
2. The sealing piston of a hydraulic cylinder according to claim 1, wherein said first passage is provided with a sealing plug.
3. The sealing piston of a hydraulic cylinder according to claim 2, characterized in that the sealing plug comprises a sealing head and a sealing rod, the sealing head and the sealing rod are both cylindrical and are of an integral structure, the outer wall of the sealing rod is provided with an external thread, one end face of the piston body is provided with a receiving groove for receiving the sealing rod, and the inner wall of the receiving groove is provided with an internal thread corresponding to the external thread.
4. The sealing piston of a hydraulic cylinder according to claim 1, characterized in that the outer wall of the piston body is provided with a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring are respectively arranged on two sides of the first piston port.
5. A sealing piston for a hydraulic cylinder according to claim 4, characterised in that the outer wall of the piston body is provided with first and second grooves for receiving the first and second sealing rings.
6. The sealing piston of a hydraulic cylinder according to claim 2, characterized in that the edge of the end surface of the piston body close to the sealing plug is an inclined surface and a circular groove is arranged in the middle, the circulation port is arranged on the circular groove, the circular groove is communicated outwards to the inclined surface to form strip-shaped grooves, the number of the strip-shaped grooves is four, and the two strip-shaped grooves are opposite to each other.
7. The sealing piston of a hydraulic cylinder as recited in claim 5, wherein the diameter of said first seal ring is greater than the diameter of said second seal ring, said first seal ring having a diameter equal to the diameter of said first groove, said second seal ring having a diameter equal to the diameter of said second groove.
8. Sealing piston for a hydraulic cylinder according to claim 1, characterized in that the number of through-flow openings is at least one, which through-flow openings are arranged around the sealing plug.
9. A sealing piston for a hydraulic cylinder according to claim 1, characterised in that the inner wall of the fourth channel is provided with a thread.
10. Use of a sealing piston according to any of claims 1-9 in a hydraulic cylinder.
CN202210383849.6A 2022-04-12 2022-04-12 Sealing piston of hydraulic oil cylinder and application thereof Pending CN114992190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210383849.6A CN114992190A (en) 2022-04-12 2022-04-12 Sealing piston of hydraulic oil cylinder and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210383849.6A CN114992190A (en) 2022-04-12 2022-04-12 Sealing piston of hydraulic oil cylinder and application thereof

Publications (1)

Publication Number Publication Date
CN114992190A true CN114992190A (en) 2022-09-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210383849.6A Pending CN114992190A (en) 2022-04-12 2022-04-12 Sealing piston of hydraulic oil cylinder and application thereof

Country Status (1)

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CN (1) CN114992190A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214998575U (en) * 2021-06-26 2021-12-03 江苏正峰液压科技有限公司 Sequence arm telescopic oil cylinder
CN215486961U (en) * 2020-07-13 2022-01-11 江阴市洪腾机械有限公司 Hydraulic cylinder for sequential expansion and contraction and sequential hydraulic system
CN114294297A (en) * 2021-12-29 2022-04-08 广东南曦液压机械有限公司 Sequential telescopic oil cylinder system, control method and equipment thereof
CN114992188A (en) * 2022-04-12 2022-09-02 韶关市瑞和液压机械制造有限公司 Hydraulic oil cylinder system and sequential action method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN215486961U (en) * 2020-07-13 2022-01-11 江阴市洪腾机械有限公司 Hydraulic cylinder for sequential expansion and contraction and sequential hydraulic system
CN214998575U (en) * 2021-06-26 2021-12-03 江苏正峰液压科技有限公司 Sequence arm telescopic oil cylinder
CN114294297A (en) * 2021-12-29 2022-04-08 广东南曦液压机械有限公司 Sequential telescopic oil cylinder system, control method and equipment thereof
CN114992188A (en) * 2022-04-12 2022-09-02 韶关市瑞和液压机械制造有限公司 Hydraulic oil cylinder system and sequential action method thereof

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