CN113339353A - Stroke-adjustable cylinder - Google Patents

Stroke-adjustable cylinder Download PDF

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Publication number
CN113339353A
CN113339353A CN202110681874.8A CN202110681874A CN113339353A CN 113339353 A CN113339353 A CN 113339353A CN 202110681874 A CN202110681874 A CN 202110681874A CN 113339353 A CN113339353 A CN 113339353A
Authority
CN
China
Prior art keywords
piston
cylinder
cylinder body
oil
stroke
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.)
Withdrawn
Application number
CN202110681874.8A
Other languages
Chinese (zh)
Inventor
戴建尧
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.)
Huajian Electric Co ltd
Original Assignee
Huajian Electric 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 Huajian Electric Co ltd filed Critical Huajian Electric Co ltd
Priority to CN202110681874.8A priority Critical patent/CN113339353A/en
Publication of CN113339353A publication Critical patent/CN113339353A/en
Withdrawn legal-status Critical Current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
    • F15B15/1404—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
    • F15B15/1428—Cylinders
    • 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
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F15B15/1452—Piston sealings
    • 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
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

The invention relates to a stroke-adjustable cylinder which comprises a support, a cylinder arranged on the support and a hydraulic cylinder arranged on the support, wherein the cylinder comprises a cylinder body arranged on the support, a first piston movably arranged in the cylinder body and a piston rod linked with the first piston, one end of the piston rod extends out of the cylinder body, a second piston is movably arranged on the piston rod corresponding to the first piston, an oil injection adjusting cavity is formed between the first piston and the second piston, an oil guide pipe is arranged between the cylinder body and the hydraulic cylinder, a spiral oil guide pipe communicated between the oil guide pipe and the second piston is arranged in the cylinder body, and an oil filling hole communicated between the spiral oil guide pipe and the oil injection adjusting cavity is formed in the second piston. The invention has the advantages of simple structure, stable and reliable performance, convenient assembly and convenient operation.

Description

Stroke-adjustable cylinder
Technical Field
The invention relates to the technical field of cylinders, in particular to a stroke-adjustable cylinder.
Background
The cylinder is a pneumatic actuating element, namely an element which adopts compressed air as power and drives a mechanism to do linear, swinging and rotating motion. The cylinder comprises a cylinder barrel, an end cover, a piston rod, a sealing element and the like. The movement of the piston of the existing cylinder is full stroke, the strokes of the piston and the piston rod can not be adjusted, the stroke of the cylinder is not controllable, and the application occasion is very limited. Therefore, it is necessary to design a cylinder with adjustable stroke.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the stroke-adjustable air cylinder which is simple in structure, stable and reliable in performance, convenient and fast to assemble and operate.
In order to achieve the purpose, the invention adopts a stroke-adjustable cylinder, which comprises a support, a cylinder arranged on the support and a hydraulic cylinder arranged on the support, wherein the cylinder comprises a cylinder body arranged on the support, a first piston movably arranged in the cylinder body and a piston rod linked with the first piston, one end of the piston rod extends out of the cylinder body, a second piston is movably arranged on the piston rod corresponding to the first piston, an oil injection adjusting cavity is formed between the first piston and the second piston, an oil guide pipe is arranged between the cylinder body and the hydraulic cylinder, a spiral oil guide pipe communicated between the oil guide pipe and the second piston is arranged in the cylinder body, and an oil injection hole communicated between the spiral oil guide pipe and the oil injection adjusting cavity is arranged on the second piston.
The stroke-adjustable air cylinder has the advantages that the stroke-adjustable air cylinder is in a split structural design, the oil injection adjusting cavity is formed between the first piston and the second piston, and hydraulic oil in the hydraulic cylinder can adjust the strokes of the first piston and the second piston, so that the purpose of stroke adjustment is achieved.
Particularly, the hydraulic cylinder comprises a cylinder body arranged on the support, hydraulic oil arranged in the cylinder body, an adjusting screw rod and an adjusting piston movably arranged in the cylinder body and in linkage fit with the adjusting screw rod, and an oil guide hole communicated with the oil guide pipe is formed in the cylinder body. The adjusting screw rod is arranged on the oil cylinder body, the adjusting screw rod can drive the adjusting piston to act by rotating the adjusting screw rod, and the adjusting piston can inject hydraulic oil into the oil injection adjusting cavity through the oil guide pipe and the spiral oil guide pipe, so that stroke adjustment of the first piston and the second piston can be realized, and a stroke adjustable function of the cylinder can be realized.
Particularly, the adjusting screw rod is rotatably arranged in a threaded hole of the oil cylinder body, one end of the adjusting screw rod extends into the oil cylinder body and is connected to the adjusting piston, and the other end of the adjusting screw rod is provided with an adjusting part exposed out of the oil cylinder body. The adjusting screw and the oil cylinder body are in threaded connection, and stroke adjustment of the air cylinder can be achieved only by rotating the adjusting screw, so that the air cylinder is more convenient to operate.
Particularly, a sealing ring which is in sealing fit with the oil cylinder body is arranged on the adjusting piston. The sealing ring can play a role in sealing, the sealing performance of the adjusting piston and the oil cylinder body is favorably improved, and the working reliability of the stroke-adjustable air cylinder is favorably improved.
In particular, a sealing rubber ring is arranged between the first piston and the piston rod. The sealing rubber ring can play a role in sealing, and is favorable for improving the sealing performance between the first piston and the piston rod.
Particularly, one end of the cylinder body is provided with a buffering exhaust hole, and a buffering air plug is arranged in an air outlet of the buffering exhaust hole. The buffering exhaust hole can slowly remove gas in the cylinder body, can play a buffering role on the first piston, and avoids the first piston from being damaged due to impact on the inner wall of the cylinder body, so that the service life of the stroke-adjustable cylinder is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
As shown in fig. 1, the embodiment of the present invention is a stroke-adjustable cylinder, which comprises a support 10, a cylinder 20 disposed on the support 10, a hydraulic cylinder 30 disposed on the support 10, the cylinder 20 comprises a cylinder body 21 arranged on the bracket 10, a first piston 22 movably arranged in the cylinder body 10, and a piston rod 23 arranged in linkage with the first piston 22, one end of the piston rod 23 extends out of the cylinder 21, a second piston 24 is movably arranged on the piston rod 23 corresponding to the first piston 22, an oil filling adjusting cavity 200 is formed between the first piston 22 and the second piston 24, an oil guide pipe 11 is arranged between the cylinder body 21 and the hydraulic cylinder 30, a spiral oil guide pipe 25 communicated between the oil guide pipe 11 and the second piston 24 is arranged in the cylinder body 21, the second piston 24 is provided with an oil filling hole 241 communicated between the spiral oil guide pipe 25 and the oil filling adjusting cavity 200. The hydraulic cylinder 30 comprises a cylinder body 31 arranged on the support 10, hydraulic oil 32 arranged in the cylinder body 31, an adjusting screw 33, and an adjusting piston 34 movably arranged in the cylinder body 31 and in linkage fit with the adjusting screw 33, wherein the cylinder body 31 is provided with an oil guide hole 311 communicated with the oil guide pipe 11. The adjusting screw rod is arranged on the oil cylinder body, the adjusting screw rod can drive the adjusting piston to act by rotating the adjusting screw rod, and the adjusting piston can inject hydraulic oil into the oil injection adjusting cavity through the oil guide pipe and the spiral oil guide pipe, so that stroke adjustment of the first piston and the second piston can be realized, and a stroke adjustable function of the cylinder can be realized. The adjusting screw 33 is rotatably disposed in the threaded hole of the cylinder body 31, one end of the adjusting screw 33 extends into the cylinder body 31 and is connected to the adjusting piston 34, and the other end of the adjusting screw 33 has an adjusting portion 331 exposed outside the cylinder body 31. The adjusting screw and the oil cylinder body are in threaded connection, and stroke adjustment of the air cylinder can be achieved only by rotating the adjusting screw, so that the air cylinder is more convenient to operate.
The adjusting piston 34 is provided with a sealing ring 301 which is in sealing fit with the oil cylinder body 31. The sealing ring can play a role in sealing, the sealing performance of the adjusting piston and the oil cylinder body is favorably improved, and the working reliability of the stroke-adjustable air cylinder is favorably improved. A sealing rubber ring 201 is arranged between the first piston 22 and the piston rod 24. The sealing rubber ring can play a role in sealing, and is favorable for improving the sealing performance between the first piston and the piston rod. One end of the cylinder body 21 is provided with a buffer exhaust hole 211, and a buffer air plug 212 is arranged in an air outlet of the buffer exhaust hole 211. The buffering exhaust hole can slowly remove gas in the cylinder body, can play a buffering role on the first piston, and avoids the first piston from being damaged due to impact on the inner wall of the cylinder body, so that the service life of the stroke-adjustable cylinder is prolonged.
This adjustable cylinder of stroke adopts split type structural design, is formed with the oiling between first piston and the second piston and adjusts the chamber, and hydraulic oil in the pneumatic cylinder can be adjusted the stroke of first piston, second piston to reach the purpose of stroke control, thereby this adjustable cylinder of stroke has simple structure, stable performance reliable, the assembly is convenient, the simple operation's advantage.

Claims (6)

1. A stroke adjustable cylinder is characterized in that: including support, setting cylinder, the pneumatic cylinder of setting on the support, the cylinder including set up cylinder body on the support, the activity set up first piston in the cylinder body, with the piston rod that first piston linkage set up, the one end of piston rod extend outside the cylinder body, the piston rod on correspond first piston department activity and be provided with the second piston, first piston and second piston between be formed with the oiling and adjust the chamber, cylinder body and pneumatic cylinder between be provided with and lead oil pipe, the cylinder body in be provided with the intercommunication and lead oil pipe at the spiral of leading between oil pipe and the second piston, the second piston on be provided with the intercommunication and lead oil pipe and the oiling adjust the oil filler point between the chamber at the spiral.
2. The stroke-adjustable cylinder of claim 1, wherein: the hydraulic cylinder comprises a cylinder body arranged on the support, hydraulic oil arranged in the cylinder body, an adjusting screw rod and an adjusting piston movably arranged in the cylinder body and in linkage fit with the adjusting screw rod, and an oil guide hole communicated with the oil guide pipe is formed in the cylinder body.
3. The stroke-adjustable cylinder of claim 2, wherein: the adjusting screw rod is rotatably arranged in the threaded hole of the oil cylinder body, one end of the adjusting screw rod extends into the oil cylinder body and is connected to the adjusting piston, and the other end of the adjusting screw rod is provided with an adjusting part exposed out of the oil cylinder body.
4. The stroke-adjustable cylinder according to claim 2 or 3, wherein: and a sealing ring which is in sealing fit with the oil cylinder body is arranged on the adjusting piston.
5. The stroke-adjustable cylinder according to claim 1 or 2, wherein: and a sealing rubber ring is arranged between the first piston and the piston rod.
6. The stroke-adjustable cylinder according to claim 1 or 2, wherein: one end of the cylinder body is provided with a buffering exhaust hole, and a buffering air plug is arranged in an air outlet of the buffering exhaust hole.
CN202110681874.8A 2021-06-19 2021-06-19 Stroke-adjustable cylinder Withdrawn CN113339353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110681874.8A CN113339353A (en) 2021-06-19 2021-06-19 Stroke-adjustable cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110681874.8A CN113339353A (en) 2021-06-19 2021-06-19 Stroke-adjustable cylinder

Publications (1)

Publication Number Publication Date
CN113339353A true CN113339353A (en) 2021-09-03

Family

ID=77477584

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110681874.8A Withdrawn CN113339353A (en) 2021-06-19 2021-06-19 Stroke-adjustable cylinder

Country Status (1)

Country Link
CN (1) CN113339353A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614536A (en) * 1949-05-16 1952-10-21 Bendix Aviat Corp Adjustable stroke hydraulic motor
US4230024A (en) * 1978-07-11 1980-10-28 A-T-O Inc. Adjustable stroke cylinder
DE3030599A1 (en) * 1980-08-11 1982-03-18 A-T-O Inc., Willoughby, Ohio Adjustable stroke piston-cylinder - has auxiliary piston sealed to run on tubular piston rods with ports for pressurised fluid supply
EP0380739A2 (en) * 1989-02-02 1990-08-08 HANS KALTENBACH MASCHINENFABRIK GMBH & CO. Method of and device for temporarily clamping workpieces
JPH11315858A (en) * 1997-12-23 1999-11-16 Luk Getriebe Syst Gmbh Motor vehicle
CN106429944A (en) * 2016-11-01 2017-02-22 沈阳双壹市政工程有限公司 Gas lifting jack for excavator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614536A (en) * 1949-05-16 1952-10-21 Bendix Aviat Corp Adjustable stroke hydraulic motor
US4230024A (en) * 1978-07-11 1980-10-28 A-T-O Inc. Adjustable stroke cylinder
DE3030599A1 (en) * 1980-08-11 1982-03-18 A-T-O Inc., Willoughby, Ohio Adjustable stroke piston-cylinder - has auxiliary piston sealed to run on tubular piston rods with ports for pressurised fluid supply
EP0380739A2 (en) * 1989-02-02 1990-08-08 HANS KALTENBACH MASCHINENFABRIK GMBH & CO. Method of and device for temporarily clamping workpieces
JPH11315858A (en) * 1997-12-23 1999-11-16 Luk Getriebe Syst Gmbh Motor vehicle
CN106429944A (en) * 2016-11-01 2017-02-22 沈阳双壹市政工程有限公司 Gas lifting jack for excavator

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SE01 Entry into force of request for substantive examination
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WW01 Invention patent application withdrawn after publication
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Application publication date: 20210903