WO2023159905A1 - Ensemble de raccordement de tête de tige, vérin hydraulique, et machine d'actionnement - Google Patents

Ensemble de raccordement de tête de tige, vérin hydraulique, et machine d'actionnement Download PDF

Info

Publication number
WO2023159905A1
WO2023159905A1 PCT/CN2022/116423 CN2022116423W WO2023159905A1 WO 2023159905 A1 WO2023159905 A1 WO 2023159905A1 CN 2022116423 W CN2022116423 W CN 2022116423W WO 2023159905 A1 WO2023159905 A1 WO 2023159905A1
Authority
WO
WIPO (PCT)
Prior art keywords
rod
oil
inner cylinder
cylinder
rod head
Prior art date
Application number
PCT/CN2022/116423
Other languages
English (en)
Chinese (zh)
Inventor
王爱军
Original Assignee
娄底市中兴液压件有限公司
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 娄底市中兴液压件有限公司 filed Critical 娄底市中兴液压件有限公司
Publication of WO2023159905A1 publication Critical patent/WO2023159905A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/43—Pyrotechnical jacks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or systems
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • 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
    • 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
    • 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
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
    • 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

Definitions

  • the present application relates to the technical field of hydraulic cylinders, in particular to a rod head connection assembly, a hydraulic cylinder and an operating machine.
  • the multi-stage hydraulic cylinder can assist the operation machine to complete operations such as upright and upright.
  • the setting method of the oil inlet and outlet of the multi-stage hydraulic cylinder directly affects its working state.
  • the common multi-stage hydraulic cylinder usually sets the oil inlet and outlet ports of the rod chamber and the rodless chamber on the rod head, and an oil pipe is added in the piston rod body to separate the hydraulic oil entering and leaving the two oil ports.
  • the rod head and the piston rod body are welded or threaded.
  • the outer diameter of the connecting end of the rod head is less than or equal to the outer diameter of the piston rod rod.
  • the diameter of the oil passage between the rods is smaller, and the response speed of the hydraulic cylinder is slower.
  • the application provides a rod head connection assembly, a hydraulic cylinder and a working machine, which are used to solve the problems of the small diameter of the oil passage between the rod head and the piston rod and the slow response speed of the hydraulic cylinder, and realize the enlargement of the rod head and the piston rod.
  • the size of the oil passage between them improves the response speed of the hydraulic cylinder.
  • a rod head connection assembly including: a rod head body, a rod head flange and an oil pipe.
  • a first oil port and a second oil port are respectively opened on the rod head body.
  • a center mounting hole and a plurality of edge oil passage holes are opened on the rod head flange.
  • the rod head body is connected to the rod head flange, and an oil chamber is arranged between the rod head body and the rod head flange.
  • the first oil port communicates with each of the edge oil through holes through the oil cavity.
  • One end of the oil pipe passes through the central mounting hole and communicates with the second oil port.
  • the plurality of edge oil through holes are evenly arrayed to the outside of the central mounting hole with the central axis of the central mounting hole as a center line.
  • a first sealing device is provided at the connecting end of the oil pipe and the second oil port.
  • a hydraulic cylinder including a cylinder barrel assembly, a rod body assembly, and the above-mentioned rod head connection assembly.
  • the rod assembly includes a central cavity.
  • the cylinder assembly includes a rod chamber and a rodless chamber.
  • the rod head flange is connected with the rod body assembly. Each edge communicates with the central cavity through an oil through hole.
  • the central cavity communicates with the rod cavity.
  • the other end of the oil pipe communicates with the rodless chamber.
  • the cylinder assembly includes a first inner cylinder, a second inner cylinder and a cylinder assembly.
  • the cylinder assembly includes an outer cylinder and a fixed rod head.
  • the fixed rod head is closed and fixedly connected to one end of the outer cylinder, and the rod head connection assembly is located at the other end of the outer cylinder.
  • the rod cavity includes a first rod cavity, a second rod cavity and a third rod cavity.
  • the first rod chamber is arranged between the first inner cylinder and the rod body; the second rod chamber is arranged between the second inner cylinder and the first inner cylinder;
  • the third rod chamber is disposed between the outer cylinder and the second inner cylinder.
  • the first rod cavity communicates with the central cavity through the first oil passage.
  • a second oil passage is opened on the first inner cylinder, and the second rod chamber communicates with the first rod chamber through the second oil passage.
  • a third oil passage is opened on the second inner cylinder, and the third rod chamber communicates with the rodless chamber through the third oil passage.
  • a third guiding and limiting sleeve is arranged between the first inner cylinder and the rod body.
  • the third guiding and limiting sleeve is fixedly connected to the opening end of the first inner cylinder, and the rod body slides through the third guiding and limiting sleeve.
  • the inner end of the rod body is provided with a third limiting boss matched with the third guide limiting sleeve. The third limiting boss can be locked on the inner end of the third guiding and limiting sleeve.
  • a hydraulic cylinder provided by the present application, between the first guide and limit sleeve and the second inner cylinder, between the second guide and limit sleeve and the first inner cylinder, and the A second sealing device is also provided between the third guiding and limiting sleeve and the rod body.
  • the rod head flange is welded to the outer end of the rod body.
  • the rod head body and the rod head flange are connected by bolts.
  • a working machine including the above-mentioned rod head connection assembly or hydraulic cylinder.
  • the first oil port on the rod head body communicates with each edge oil through hole through the oil chamber.
  • the second oil port on the rod head body communicates with the oil pipe.
  • the rod head flange When in use, the rod head flange is connected with the rod body.
  • the first oil port communicates with the rod cavity of the hydraulic cylinder through a plurality of edge oil through holes, so as to increase the oil flow through the rod cavity.
  • the second oil port communicates with the rodless chamber of the hydraulic cylinder through the oil pipe, which can increase the size of the center mounting hole and the oil pipe to increase the oil flow through the rodless chamber.
  • the rod head connection assembly can increase the oil flow through the rod chamber and the rodless chamber, thereby greatly improving the response speed of the hydraulic cylinder.
  • the hydraulic cylinder since the hydraulic cylinder includes the above-mentioned rod head connection assembly, it also has the above-mentioned various advantages.
  • the working machine since the working machine includes the rod head connection assembly or the hydraulic cylinder as described above, it also has the above-mentioned various advantages.
  • Fig. 1 is the structural representation of the hydraulic cylinder provided by the present application
  • Fig. 2 is a schematic structural view of the rod head flange and the rod body assembly in the hydraulic cylinder provided by the present application;
  • Fig. 3 is a schematic structural view of the rod head flange in the rod head connection assembly provided by the present application;
  • Fig. 4 is a partial enlarged view of place A in Fig. 1;
  • Fig. 5 is a partial enlarged view of B in Fig. 1 .
  • Second oil port 200: Rod head flange
  • 201 center mounting hole
  • 202 edge oil through hole
  • 402 second inner cylinder
  • 403 outer cylinder
  • 602 the first limit boss
  • 603 the second guide limit sleeve
  • 604 the second limit boss
  • 605 the third guide limit sleeve
  • the first feature may be in direct contact with the first feature or the first feature and the second feature may pass through the middle of the second feature.
  • Media indirect contact Moreover, “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the level of the first feature is higher than that of the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the embodiment of the first aspect of the present application provides a club head connection assembly. As shown in FIGS.
  • a first oil port 101 and a second oil port 102 are respectively opened on the head body 100 .
  • the rod head flange 200 is provided with a central installation hole 201 and a plurality of edge oil passage holes 202 .
  • the head body 100 is connected to the head flange 200 .
  • an oil chamber 302 is provided between the rod head body 100 and the rod head flange 200 .
  • the first oil port 101 communicates with each edge oil through hole 202 through the oil cavity 302 .
  • One end of the oil pipe 301 passes through the central installation hole 201 and communicates with the second oil port 102 .
  • the first oil port 101 on the rod head body 100 communicates with each edge oil through hole 202 through the oil cavity 302 .
  • the second oil port 102 on the head body 100 communicates with the oil pipe 301 .
  • the head flange 200 is connected to the head body 100 .
  • the first oil port 101 communicates with the rod chamber of the hydraulic cylinder through a plurality of edge oil passage holes 202 to increase the oil flow through the rod chamber.
  • the second oil port 102 communicates with the rodless chamber 408 of the hydraulic cylinder through the oil pipe 301 , and the size of the central mounting hole 201 and the oil pipe 301 can be increased to increase the oil flow through the rodless chamber 408 . Therefore, the rod head connection assembly can increase the oil flow through the rod chamber and the rodless chamber 408, thereby greatly improving the response speed of the hydraulic cylinder.
  • a plurality of edge oil passage holes 202 are evenly arrayed to the outside of the central installation hole 201 with the central axis of the central installation hole 201 as the center line.
  • the central mounting hole 201 is located at the central axis of the rod head flange 200 .
  • the edge oil through holes 202 evenly to the outside of the central mounting hole 201 , not only can the amount of oil passing through the rod cavity of the hydraulic cylinder be increased, but also the stress uniformity of the lifting rod head flange 200 can be achieved.
  • edge oil through holes 202 does not make any limitation on the number of edge oil through holes 202 .
  • the number of edge oil passage holes 202 is four.
  • a first sealing device 303 is provided at the connecting end of the oil pipe 301 and the second oil port 102 .
  • one end of the oil pipe 301 passes through the central installation hole 201 and the oil cavity 302 , and extends to the inside of the rod head flange 200 to communicate with the second oil port 102 .
  • the first sealing device 303 at the connection end between the oil pipe 301 and the second oil port 102, it is possible to prevent the second oil port 102 from communicating with the oil chamber 302, thereby preventing the second oil port 102 communicating with the rodless chamber 408 from It communicates with the first oil port 101 which communicates with the rod cavity, thereby ensuring the working accuracy of the hydraulic cylinder.
  • the embodiment of the second aspect of the present application provides a hydraulic cylinder, including a cylinder assembly 400 , a rod body assembly 500 and the above-mentioned rod head connection assembly.
  • the rod assembly 500 includes a central cavity 504 .
  • the cylinder assembly 400 includes a rod chamber and a rodless chamber 408 .
  • the rod head flange 200 is connected with the rod body assembly 500 .
  • Each edge communicates with the central cavity 504 through the oil through hole 202 .
  • the central cavity 504 communicates with the rod cavity.
  • the other end of the oil pipe 301 communicates with the rodless cavity 408 .
  • the hydraulic cylinder since the hydraulic cylinder includes the above-mentioned rod head connection assembly, it also has the above-mentioned various advantages.
  • the rod body assembly 500 includes a rod body 501 , a rod tail assembly 502 and a piston 503 .
  • the inner end of the rod body 501 is connected with the rod tail assembly 502 .
  • the outer end of the rod body 501 is connected to the rod head flange 200 .
  • the piston 503 is sleeved on the outside of the rod tail assembly 502 .
  • a central cavity 504 is formed inside the rod body 501 . Each edge communicates with the central cavity 504 through the oil through hole 202 .
  • a plurality of first oil passages 505 are opened on the rod tail assembly 502 .
  • the central cavity 504 communicates with the rod cavity through the first oil passage 505 .
  • a central cavity 504 is provided in the direction of the central axis of the rod body 501 .
  • the oil pipe 301 passes through the central cavity 504 .
  • One end of the oil pipe 301 passes through the central mounting hole 201 of the rod head flange 200 and communicates with the second oil port 102 .
  • the oil pipe 301 can be fixed with the central mounting hole 201 .
  • the other end of the oil pipe 301 passes through the rod tail assembly 502 and extends into the rodless chamber 408 to communicate with the rodless chamber 408 .
  • Each edge oil passage hole 202 communicates with the central cavity 504 .
  • a plurality of first oil passages 505 are opened on the rod tail assembly 502 .
  • the central cavity 504 communicates with the rod cavity through each first oil passage 505 .
  • the hydraulic oil input through the first oil port 101 enters the central cavity 504 through the oil chamber 302 and the oil through holes 202 at each edge.
  • the hydraulic oil in the central cavity 504 enters the rod cavity through the first oil passages 505 .
  • the hydraulic oil in the rodless cavity 408 is discharged through the oil pipe 301 and the second oil port 102 .
  • the rod body 501 of the hydraulic cylinder retracts.
  • the hydraulic oil input through the second oil port 102 enters the rodless cavity 408 through the oil pipe 301 .
  • the hydraulic oil in the rod cavity enters the central cavity 504 through the first oil passages 505 .
  • the hydraulic oil in the central cavity 504 is discharged through the oil through hole 202 and the first oil port 101 on each edge.
  • the rod body 501 of the hydraulic cylinder stretches out.
  • the cylinder assembly 400 includes a first inner cylinder 401 , a second inner cylinder 402 and a cylinder assembly.
  • the cylinder assembly includes an outer cylinder 403 and a fixed rod head 404 .
  • the fixed rod head 404 is closed and fixedly connected to one end of the outer cylinder 403 .
  • the rod head connection assembly is located at the other end of the outer cylinder 403 .
  • the rod chambers include a first rod chamber 405 , a second rod chamber 406 and a third rod chamber 407 .
  • the first rod cavity 405 is arranged between the first inner cylinder 401 and the rod body 501.
  • the second rod chamber 406 is disposed between the second inner cylinder 402 and the first inner cylinder 401 .
  • the third rod chamber 407 is disposed between the outer cylinder 403 and the second inner cylinder 402 .
  • the first rod cavity 405 communicates with the central cavity 504 through the first oil passage 505 .
  • a second oil passage 409 is opened on the first inner cylinder 401 , and the second rod chamber 406 communicates with the first rod chamber 405 through the second oil passage 409 .
  • a third oil passage 410 is opened on the second inner cylinder 402 , and the third rod chamber 407 communicates with the rodless chamber 408 through the third oil passage 410 .
  • a first guiding and limiting sleeve 601 is disposed between the outer cylinder 403 and the second inner cylinder 402 .
  • the first guiding and limiting sleeve 601 is fixedly connected to the open end of the outer cylinder 403 .
  • the second inner cylinder 402 slides through the first guiding and limiting sleeve 601 .
  • the inner end of the second inner cylinder 402 is provided with a first limiting boss 602 matching with the first guide limiting sleeve 601 .
  • the first limiting boss 602 can be locked on the inner end of the first guiding and limiting sleeve 601 .
  • a second guiding and limiting sleeve 603 is disposed between the second inner cylinder 402 and the first inner cylinder 401 .
  • the second guiding and limiting sleeve 603 is fixedly connected to the open end of the second inner cylinder 402 .
  • the first inner cylinder 401 slides through the second guiding and limiting sleeve 603 .
  • the inner end of the first inner cylinder 401 is provided with a second limiting boss 604 matching with the second guide limiting sleeve 603 .
  • the second limiting boss 604 can be engaged in the inner end of the second guiding limiting sleeve 603 .
  • a third guiding and limiting sleeve 605 is disposed between the first inner cylinder 401 and the rod body 501 .
  • the third guiding and limiting sleeve 605 is fixedly connected to the opening end of the first inner cylinder 401 .
  • the rod body 501 slides through the third guiding and limiting sleeve 605 .
  • the inner end of the rod body 501 is provided with a third limiting boss 606 matching with the third guide limiting sleeve 605 .
  • the third limiting boss 606 can be locked on the inner end of the third guide limiting sleeve 605 .
  • the hydraulic oil enters the rodless cavity 408 of the hydraulic cylinder through the second oil port 102 and the oil pipe 301 .
  • the rod assembly 500 , the first inner cylinder 401 and the second inner cylinder 402 move outward simultaneously.
  • the second inner cylinder 402 stops moving outward.
  • the hydraulic oil in the third rod chamber 407 enters the rodless chamber 408 through the third oil passage 410 .
  • the hydraulic oil in the second rod chamber 406 enters the first rod chamber 405 through the second oil passage 409, and the hydraulic oil in the first rod chamber 405 enters the central chamber 504 through the first oil passages 505. .
  • the hydraulic oil in the central cavity 504 is discharged through the oil through hole 202 and the first oil port 101 on each edge.
  • the hydraulic oil enters the central cavity 504 through the first oil port 101 and each edge oil through hole 202, and the hydraulic oil in the central cavity 504 enters the first active through the first oil passage 505.
  • part of the hydraulic oil in the rodless chamber 408 is discharged through the oil pipe 301 and the second oil port 102 .
  • the rod body assembly 500 shrinks inward gradually to a limit position.
  • the hydraulic oil in the first rod cavity 405 enters the second rod cavity 406 through the second oil passage 409, and part of the hydraulic oil in the rodless cavity 408 passes through the oil pipe 301 And the second oil port 102 discharges.
  • the first inner cylinder 401 gradually expands inward to a limit position. Subsequently, the external force pushes the second inner cylinder 402 to shrink inward. At this time, part of the oil in the rodless cavity 408 enters the third rod cavity 407 through the third oil passage 410 . The remaining oil in the rodless cavity 408 is discharged through the oil pipe 301 and the second oil port 102 .
  • the third rod chamber 407 communicates with the rodless chamber 408, so that the second inner cylinder 402 works in single action, that is, the second inner cylinder
  • the barrel 402 can only be stretched out by itself and cannot be retracted by itself.
  • the second inner cylinder 402 needs to be contracted, it needs to be pushed back under the action of gravity or other external forces. Thereby, the contraction cushioning performance of the hydraulic cylinder can be improved.
  • the first inner cylinder 401 and the rod assembly 500 can perform double-action work, that is, the first inner cylinder 401 and the rod assembly 500 can extend or contract by themselves.
  • a second sealing device is also provided between 605 and the rod body 501 .
  • connection mode between the first guide limit sleeve 601 and the outer cylinder 403 the connection mode between the second guide limit sleeve 603 and the second inner cylinder 402 , and the second
  • the connection method between the three guide limit sleeves 605 and the first inner cylinder 401 is not limited in this application.
  • the first guide and limit sleeve 601, the second guide and limit sleeve 603 and the third guide and limit sleeve 605 can be connected to the outer cylinder 403, the second inner cylinder 402 and the first inner cylinder 401 with interference fit respectively. .
  • the rod head flange 200 is welded to the outer end of the rod body 501 .
  • the head body 100 is connected to the head flange 200 by bolts.
  • a plurality of bolt connection holes 203 are uniformly and spaced apart on the edge of the rod head flange 200 .
  • the head flange 200 is connected to the head body 100 by a plurality of bolts.
  • the above-mentioned working machinery includes a crane or an elevating fire truck and the like.
  • the work machine since the work machine includes the rod head connection assembly or the hydraulic cylinder as described above, it also has the above-mentioned various advantages.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Actuator (AREA)

Abstract

La présente invention concerne un ensemble de raccordement de tête de tige, un vérin hydraulique et une machine d'actionnement. L'ensemble de raccordement de tête de tige comprend : un corps de tête de tige (100), une bride de tête de tige (200) et un tuyau d'huile (301). Le corps de tête de tige (100) est pourvu d'un premier orifice d'huile (101) et d'un second orifice d'huile (102), respectivement. La bride de tête de tige (200) est pourvue d'un trou de montage central (201) et d'une pluralité de trous traversants de passage d'huile de bord (202). Le corps de tête de tige (100) est raccordé à la bride de tête de tige (200), et une cavité d'huile (302) est disposée entre le corps de tête de tige (100) et la bride de tête de tige (200). Le premier orifice d'huile (101) est en communication avec les trous traversants de passage d'huile de bord (202) au moyen de la cavité d'huile (302). Une extrémité du tuyau d'huile (301) passe à travers le trou de montage central (201) et est en communication avec le second orifice d'huile (102). Cette configuration peut augmenter les quantités de passage d'huile d'une cavité de tige et d'une cavité sans tige (408). Par conséquent, la vitesse de réaction du vérin hydraulique est considérablement augmentée.
PCT/CN2022/116423 2022-02-28 2022-09-01 Ensemble de raccordement de tête de tige, vérin hydraulique, et machine d'actionnement WO2023159905A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202220422298.5U CN216867154U (zh) 2022-02-28 2022-02-28 杆头连接组件、液压缸及作业机械
CN202220422298.5 2022-02-28

Publications (1)

Publication Number Publication Date
WO2023159905A1 true WO2023159905A1 (fr) 2023-08-31

Family

ID=82161035

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/116423 WO2023159905A1 (fr) 2022-02-28 2022-09-01 Ensemble de raccordement de tête de tige, vérin hydraulique, et machine d'actionnement

Country Status (2)

Country Link
CN (1) CN216867154U (fr)
WO (1) WO2023159905A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117108584A (zh) * 2023-09-28 2023-11-24 无锡市大鸿液压气动成套有限公司 一种液压活塞结构及液压油缸

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN216867154U (zh) * 2022-02-28 2022-07-01 娄底市中兴液压件有限公司 杆头连接组件、液压缸及作业机械

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014126142A (ja) * 2012-12-26 2014-07-07 Kayaba Ind Co Ltd 流体圧シリンダ
CN203702724U (zh) * 2013-12-17 2014-07-09 湘电重型装备有限公司 一种矿用自卸车举升液压油缸
CN104196821A (zh) * 2014-07-16 2014-12-10 徐州徐工液压件有限公司 集前后腔双向通油和测压排气功能于一体的耳环结构
CN104196819A (zh) * 2014-09-06 2014-12-10 蚌埠液力机械有限公司 双作用通孔式四级油缸
CN105443491A (zh) * 2015-12-07 2016-03-30 柳州柳工液压件有限公司 叉车起升油缸
JP2017166519A (ja) * 2016-03-14 2017-09-21 Ｋｙｂ株式会社 流体圧シリンダ
CN209444654U (zh) * 2018-12-24 2019-09-27 潍柴动力股份有限公司 一种液压元件
CN210461664U (zh) * 2019-07-04 2020-05-05 江苏恒立液压股份有限公司 过滤活塞以及油缸
CN211259187U (zh) * 2019-08-28 2020-08-14 江苏恒立液压股份有限公司 液压缸缸头法兰
JP2021143704A (ja) * 2020-03-11 2021-09-24 Ｋｙｂ株式会社 流体圧シリンダ
CN215058588U (zh) * 2021-05-03 2021-12-07 四川凌峰航空液压机械有限公司 液压作动筒活塞内置缓冲装置
CN216867154U (zh) * 2022-02-28 2022-07-01 娄底市中兴液压件有限公司 杆头连接组件、液压缸及作业机械

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014126142A (ja) * 2012-12-26 2014-07-07 Kayaba Ind Co Ltd 流体圧シリンダ
CN203702724U (zh) * 2013-12-17 2014-07-09 湘电重型装备有限公司 一种矿用自卸车举升液压油缸
CN104196821A (zh) * 2014-07-16 2014-12-10 徐州徐工液压件有限公司 集前后腔双向通油和测压排气功能于一体的耳环结构
CN104196819A (zh) * 2014-09-06 2014-12-10 蚌埠液力机械有限公司 双作用通孔式四级油缸
CN105443491A (zh) * 2015-12-07 2016-03-30 柳州柳工液压件有限公司 叉车起升油缸
JP2017166519A (ja) * 2016-03-14 2017-09-21 Ｋｙｂ株式会社 流体圧シリンダ
CN209444654U (zh) * 2018-12-24 2019-09-27 潍柴动力股份有限公司 一种液压元件
CN210461664U (zh) * 2019-07-04 2020-05-05 江苏恒立液压股份有限公司 过滤活塞以及油缸
CN211259187U (zh) * 2019-08-28 2020-08-14 江苏恒立液压股份有限公司 液压缸缸头法兰
JP2021143704A (ja) * 2020-03-11 2021-09-24 Ｋｙｂ株式会社 流体圧シリンダ
CN215058588U (zh) * 2021-05-03 2021-12-07 四川凌峰航空液压机械有限公司 液压作动筒活塞内置缓冲装置
CN216867154U (zh) * 2022-02-28 2022-07-01 娄底市中兴液压件有限公司 杆头连接组件、液压缸及作业机械

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117108584A (zh) * 2023-09-28 2023-11-24 无锡市大鸿液压气动成套有限公司 一种液压活塞结构及液压油缸
CN117108584B (zh) * 2023-09-28 2024-02-27 无锡市大鸿液压气动成套有限公司 一种液压活塞结构及液压油缸

Also Published As

Publication number Publication date
CN216867154U (zh) 2022-07-01

Similar Documents

Publication Publication Date Title
WO2023159905A1 (fr) Ensemble de raccordement de tête de tige, vérin hydraulique, et machine d'actionnement
US5375348A (en) Deep excavator
CN107061430B (zh) 负流量液压回路控制的举升系统
EP0947709B1 (fr) Système de télescopage avec cylindre télescopique à sections multiples
CN105417410A (zh) 带有锁定机构的伸缩臂结构及起重机
WO2022100284A1 (fr) Tige de piston de vérin à huile télescopique, vérin à huile télescopique et grue
KR20100126364A (ko) 텔레스코픽 기울임 실린더를 가진 차 캡 기울임 장치
CN212337777U (zh) 一种多级液压缸
CN105384091A (zh) 带有多级独立伸缩油缸的伸缩臂结构及起重机
WO2024021901A1 (fr) Tête de flèche de grue, flèche de grue et machine à grue
CN210087728U (zh) 伸缩缸和伸缩支架
CN112081794A (zh) 一种多级液压缸
CN111779721A (zh) 一种顺序伸缩油缸及其组合
CN111894921A (zh) 伸缩臂架的液压系统、伸缩臂架以及工程车辆
CN111852974A (zh) 伸缩臂架的液压系统、伸缩臂架以及工程车辆
CN210050128U (zh) 一种内置额外油路双作用多级液压缸
CN217201789U (zh) 一种具有集成式插装顺序阀的吊臂伸缩机构
WO2013099642A1 (fr) Cylindre à pression de fluide
CN108119431A (zh) 一种伸缩油缸
CN214989952U (zh) 一种活塞杆端控制多级举升油缸
CN217926559U (zh) 一种单级可控的多级油缸
CN218624854U (zh) 快速伸缩油气缸
CN219101759U (zh) 一种多级缸二级限速结构及液压缸
CN211820182U (zh) 一种带有排气阀的新型油缸
CN212643199U (zh) 伸缩臂架的液压系统、伸缩臂架以及工程车辆

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22928171

Country of ref document: EP

Kind code of ref document: A1