EP4153870A2 - Cylinder piston end cap and lock mechanism at full safe load that can be integrated into hydraulic and pneumatic cylinders - Google Patents
Cylinder piston end cap and lock mechanism at full safe load that can be integrated into hydraulic and pneumatic cylindersInfo
- Publication number
- EP4153870A2 EP4153870A2 EP21832722.9A EP21832722A EP4153870A2 EP 4153870 A2 EP4153870 A2 EP 4153870A2 EP 21832722 A EP21832722 A EP 21832722A EP 4153870 A2 EP4153870 A2 EP 4153870A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lock
- hydraulic
- casing
- pin
- end cap
- 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
Links
- LPEPZBJOKDYZAD-UHFFFAOYSA-N flufenamic acid Chemical compound OC(=O)C1=CC=CC=C1NC1=CC=CC(C(F)(F)F)=C1 LPEPZBJOKDYZAD-UHFFFAOYSA-N 0.000 title claims description 12
- 230000008878 coupling Effects 0.000 claims abstract description 37
- 238000010168 coupling process Methods 0.000 claims abstract description 37
- 238000005859 coupling reaction Methods 0.000 claims abstract description 37
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/01—Locking-valves or other detent i.e. load-holding 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
- F15B15/08—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
- F15B15/1433—End caps
-
- 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
- F15B15/202—Externally-operated valves mounted in or on the actuator
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
- F15B2211/30515—Load holding valves
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/8636—Circuit failure, e.g. valve or hose failure
Definitions
- This invention is about the lock mechanism which prevents the oil inside the cylinder to leak back because of wear, cut or blast that may occur on the hoses used in hydraulic and pneumatic piston systems.
- Hoses are generally made of one or a combination of various materials. The material largely depends on the application and the pressure of the fluid that passes through the hose. These hoses are used in places like agriculture, constructions, machinery and mining equipment, heavy duty machines, household appliances etc. There may occur some problems in these hoses because of multi-planar flexion during operation, bending of wire layers due to the operating conditions, abrasion, pulling tension and suchlike factors. As a result of these problems hoses may encounter wear and thus sudden blasts due to high pressures. In addition, operating with extremely hot fluids speeds up the wear and affects the fatigue life.
- the inner lock mechanism of the invention temporarily fixes a piston to a certain position inside an oil pressure actuator.
- the lock mechanism has a different function in this invention.
- the piston inside the cylinder is fixed with the wrench in the groove inside.
- Our invention is a new, low-cost, safe, practical, easy to mount technology that does not cause the oil to leak back, not need frequent maintenance, can be applied in every hydraulic and pneumatic system and can overcome the disadvantages mentioned above.
- Our invention can be manufactured solely and independently and can be fixed on to hydraulic or pneumatic cylinders with screws or by welding.
- Our invention provides oil intake and outlet needed by hydraulic cylinders through the inner mechanism it consists of. While the unlocking pin in its' inner mechanism moves the pin lock with the help of the two couplings in its' locking mechanism, this enables the oil intake and outlet. And these two couplings are placed on our product's body.
- the pin lock seats on the bearing in the locking case and the oil is captured in the cylinder housing. The locking process is maintained until the system is re -pressurized. And when the oil hose to the pressure zone blasts, the springs will automatically push the shaft and pin lock thus the system will be locked by itself again.
- our invention can be manufactured by the parts which can be easily found in the market, thus it's low-cost by means of part and maintenance. With the help of the o-rings and felts in the inner body, there's no leaking problem encountered.
- the end cap can be mounted on the back of the body by screw threads or by welding and when preferred it's also possible to attach a foot on the end cap by welding.
- Our invention can be integrated onto double-acting cylinder, single-acting cylinder, double-acting telescopic cylinder or single-acting telescopic cylinder.
- Our invention does not allow any oil leakage that may occur in coupling or hose blasts of these systems.
- the hose necessity can be reduced by alternatively drilling a hole right across the hydraulic cylinder's first coupling side and adding a hose.
- the oil leakage between the felt and the o- ring can be determined.
- a pressure sensor can be placed on this hole.
- the oil leakage can be viewed by the personnel.
- the pin lock on our invention is manufactured as one part as a shaft and the other as a semisphere.
- We used 58 rodway heat-treated steel material and its' sealing quality is stronger and body structure is more durable compared to steel balls that are fully spherical in terms of structure and geometry.
- the invention has a solid structure.
- Figure 9 Perspective view of the end cap.
- the invention has a body (1) in a cylindrical form, a second coupling (3) that enables the fluid inside the body (1) to enter-exit the casing inside the hydraulic cylinder (H) and move towards -i-x and -x in a way to make the cylinder shaft to move forward and backward, a lock-casing (5) located inside the body with the screw threads on it and including a semispherical housing at the end, a pin lock (8) located in the semispherical housing at the end of the lock-casing (5) and moves toward +y and -y inside this housing in a way to allow the fluid flowing through this casing to enter and exit, an unlocking pin (4) that enables the pin lock (8) to move toward +y and forms a semispherical shape at the end, a lock spring (7) located inside the lock-casing (5) in a way to enable the pin lock (8) to move toward -y with compression force, a pin spring (6) that enables the unlocking pin (4) to move toward -y with compression
- the invention has the first o-ring (10) that prevents the fluid leakage from the pressure gap (B) to the lock-casing (5).
- the product subject to invention has the unlocking pin (4) that includes the o-ring casing (4.1) connected to the first o-ring (10).
- the first coupling (2) and the second coupling (3) in the invention enables the entry-exit of the oil and air flow.
- the invention has the first coupling (2) and the second coupling (3) located with a 90° angle on to the body (1).
- the body (1) of the product subject to invention has the hole (1.1) that can determine the oil leakage between the sealing felt (11) and the first o-ring (10).
- the invention has a pressure sensor on the hole (1.1).
- the product subject to invention may have a cylindrical, triangular, cubic, conic, hexagonal, rectangular or pentagonal body (1).
- the pin lock (8) and the lock-casing (5) in the invention is manufactured from 58 rodway heat-treated steel material.
- the pin lock (8) in the product subject to invention is located in a way to seat on the housing of the lock casing (5) without any space and the end of the shaft is semispherical.
- the parts constituting the invention are basically; the body (1), first coupling (2), second coupling (3), unlocking pin (4), lock-casing (5), pin spring (6), lock spring )7), pin lock (8), end cap (9), first o-ring (10), sealing felt (11) and the second o-ring (12).
- the unlocking pin (4) contains only one part. This is the o-ring casing (4.1).
- the body (1) contains the hole (1.1) part.
- the unlocking pin (4) part is located in the housing where the pressure gap (B) is in.
- the pin spring (6) concentrically connected to the shaft at the end of the unlocking pin (4).
- the pin lock (8) is located at the end of the lock spring (7).
- the first coupling (2) is fixed 90° vertically on the body (1) in a way to send the fluid to the pressure gap (B).
- the operating principle of the product subject to invention is as follows; our invention can be used in single or double acting normal cylinders and single or double acting telescopic cylinders. It operates in double acting cylinders as follows; the fluid filling from the second coupling (3) is directly sent to the housing inside the hydraulic cylinder (H). At the same time, it hits the pin lock (8) and able to move the pin lock (8) toward +y. Then the cylindrical shaft inside the hydraulic cylinder (H) moves forward (+y) by the fluid filling in it. And for the backward motion of the cylindrical shaft inside the hydraulic cylinder (H), oil is pushed from the first coupling (2). The fluid flows from the first coupling (2) to the fluid pressure gap (B).
- the fluid filled in here forces the unlocking pin (4) to move toward +y.
- the pin lock (8) is moved 3-4 mm within its' casing.
- the hose connected to the first coupling (2) transfers the fluid also to hydraulic cylinder's (H) inlet at the other end.
- the first coupling (2) works in parallel with this inlet.
- This fluid filled in pushes the shaft inside the hydraulic cylinder (H) from the other side and enables the fluid left in the other side to be released from the space made by the pin lock (8).
- the fluid leaving this area passes to the second coupling (3) and leaves the system.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR2020/10494A TR202010494A1 (en) | 2020-07-02 | 2020-07-02 | CYLINDER PISTON END CAP AND FULLY SAFE LOCKING MECHANISM THAT CAN BE INTEGRATED IN HYDRAULIC AND PNEUMATIC CYLINDERS |
PCT/TR2021/050681 WO2022005437A2 (en) | 2020-07-02 | 2021-07-01 | Cylinder piston end cap and lock mechanism at full safe load that can be integrated into hydraulic and pneumatic cylinders |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4153870A2 true EP4153870A2 (en) | 2023-03-29 |
EP4153870A4 EP4153870A4 (en) | 2023-12-13 |
Family
ID=79321912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21832722.9A Pending EP4153870A4 (en) | 2020-07-02 | 2021-07-01 | Cylinder piston end cap and lock mechanism at full safe load that can be integrated into hydraulic and pneumatic cylinders |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4153870A4 (en) |
TR (1) | TR202010494A1 (en) |
WO (1) | WO2022005437A2 (en) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4635536A (en) * | 1983-09-19 | 1987-01-13 | Miller Fluid Power Corporation | Cylinder locking apparatus |
US4869292A (en) * | 1988-05-09 | 1989-09-26 | Sulwer Michael T | Brake bleeder check valve |
US6477937B1 (en) * | 1999-12-13 | 2002-11-12 | Aladdin Engineering & Manufacturing | Valve arrangement including release valve |
US6832539B2 (en) * | 2002-07-15 | 2004-12-21 | Delaware Capital Formation, Inc. | Cylinder lock |
US20040112208A1 (en) * | 2002-12-11 | 2004-06-17 | Kot Norbert J. | Pilot-operated check valve cartridge |
DE202004007738U1 (en) * | 2004-05-11 | 2004-07-22 | Drumag Gmbh Fluidtechnik | Compressed air cylinder has check valve and/or check valve release device installed inside casing, and with cylinder head and/or cylinder cover rigidly connected to center section encompassing cylinder tube |
EP2546421B1 (en) * | 2010-05-18 | 2014-12-24 | Volvo Construction Equipment AB | Double check valve for construction equipment |
JP6000885B2 (en) * | 2013-03-25 | 2016-10-05 | サンコール株式会社 | Seal valve and manufacturing method thereof |
US10480542B2 (en) * | 2016-06-22 | 2019-11-19 | Aladdin Engineering And Manufacturing, Inc. | Valve system for pneumatic cylinders |
JP6677751B2 (en) * | 2018-01-29 | 2020-04-08 | Kyb株式会社 | Fluid leak detection equipment and reciprocating fluid pressure equipment |
CN210087735U (en) * | 2019-03-14 | 2020-02-18 | 中国水利水电夹江水工机械有限公司 | Mechanical locking device for end part of oil cylinder |
-
2020
- 2020-07-02 TR TR2020/10494A patent/TR202010494A1/en unknown
-
2021
- 2021-07-01 WO PCT/TR2021/050681 patent/WO2022005437A2/en active Application Filing
- 2021-07-01 EP EP21832722.9A patent/EP4153870A4/en active Pending
Also Published As
Publication number | Publication date |
---|---|
TR202010494A1 (en) | 2022-05-23 |
WO2022005437A2 (en) | 2022-01-06 |
WO2022005437A3 (en) | 2022-02-03 |
EP4153870A4 (en) | 2023-12-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2749617T3 (en) | Automatic filling shutoff for a lubrication system | |
CN101166904B (en) | Hydraulic system having a pressure compensator | |
EP1870558A2 (en) | Top drive swivel apparatus and method | |
US5699822A (en) | Breakaway coupling device | |
US8449265B2 (en) | Hydraulically actuated reciprocating pump | |
US10753508B1 (en) | Method and apparatus for a choke valve and operation of a choke valve | |
US5248026A (en) | Conveyor belt scraper mechanisms | |
US20220186583A1 (en) | Frack valve greasing system | |
EP2932143B1 (en) | Pressure volume regulator | |
US4470430A (en) | Drilling choke | |
EP4153870A2 (en) | Cylinder piston end cap and lock mechanism at full safe load that can be integrated into hydraulic and pneumatic cylinders | |
US3604456A (en) | Operator for valves or the like | |
US3792714A (en) | Safety valve structure | |
CA2620348C (en) | Valve, actuator and control system therefor | |
US7124770B2 (en) | Shear mechanism for backpressure relief in a choke valve | |
US7722131B2 (en) | Control component for a spring applied-pressure released hydraulic brake and hydraulic motor | |
US5433119A (en) | Torque indicator | |
US20090084257A1 (en) | Hydraulic cylinder having multi-stage snubbing valve | |
US6672222B2 (en) | Robotic internal gauge with contact at right angles to the oil pipeline | |
GB2406887A (en) | Locking coupling with fluid sensing. | |
US2710598A (en) | Swivel connections for hydraulically operated tools and implements | |
NZ240660A (en) | Double chamber reciprocating pump for slurries | |
US4080870A (en) | Multiple position fluid conductor apparatus | |
US626761A (en) | Rock-drilling engine | |
WO2015153077A1 (en) | Hydraulic linear actuator integrated into a flexible hose, and hydraulic circuit using same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20221223 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Free format text: PREVIOUS MAIN CLASS: F15B0015260000 Ipc: F15B0013010000 |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20231114 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F15B 15/14 20060101ALI20231108BHEP Ipc: F15B 13/01 20060101AFI20231108BHEP |