WO2016064356A1 - A telescopic cylinder with a plurality of inner pistons - Google Patents
A telescopic cylinder with a plurality of inner pistons Download PDFInfo
- Publication number
- WO2016064356A1 WO2016064356A1 PCT/TR2015/000171 TR2015000171W WO2016064356A1 WO 2016064356 A1 WO2016064356 A1 WO 2016064356A1 TR 2015000171 W TR2015000171 W TR 2015000171W WO 2016064356 A1 WO2016064356 A1 WO 2016064356A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- cylinder
- stage
- telescopic cylinder
- telescopic
- Prior art date
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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
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
Definitions
- the present invention is related to the telescopic cylinders which are used to lift the loads in heavy vehicles and different areas.
- the present invention is particularly related to a plurality of pistons which are formed inside a telescopic cylinder and prevent the load-carrying body of the heavy vehicles from performing an abrupt strike with the load therein while said body is being brought to the normal position.
- Telescopic cylinders are hydraulic components which generate high stroke and power used to lift and lower the body of heavy vehicles. Telescopic cylinders are largely used in the structures which comprise a long-distance arm and with which the high loads are lifted. In the current telescopic systems, the metals collide with one another as the cylinder stages descend and this leads to a breakdown. As a result, the ring erosions are experienced and the chips occurring due to the ring erosions damage the sealing components. Therefore, the physical life of the cylinder shortens. Hence, a product with shorti physical life and a structure with high maintenance costs are obtained.
- the invention is related to the telescopic cylinders, characterized in comprising ring grooves formed on the inner and outer surfaces of staged pipes, an inner ring located inside said ring grooves without requiring a welding process, outer stop ring, and outer fiat ring.
- the invention is related to a stage-locking system which ensures optimum efficiency for the axial and radial movements of the multi-stage (telexcopic) cylinders, performs stage-stopping and bedding functions, and is made of GG2S speciaily-alioyed gray cast iron.
- the multi-stage (telescopic) hydraulic cylinders are the lifting systems which consist of telescopic pistons with different diameters used in many lifting mechanisms, particularly the heavy machinery and dumper trucks, and which are ideal for the application requiring high stroke.
- the object of the Invention is to offer different technical properties introducing a novel development in this field differently from the telescopic cylinder structures used in the state of the art.
- An object of the Invention is to slow down the abrupt strike motion of the telescopic cylinder by means of a plurality of pistons formed inside the telescopic cylinder. Thus, it aims to eliminate the abrupt collision between the metals.
- An object of the invention Is to slow down the load resistance by utilizing a plurality of pistons formed inside the telescopic cylinder and the hydraulic fluid.
- Another object of the invention is to minimize said collisions by means of a plurality of pistons formed inside the telescopic cylinder. Thus, it aims to eliminate the erosions.
- Another object of the invention is to increase the physical life of the product by minimizing said collisions.
- Yet another object of the invention is to provide sealing and Increase this physical life of the hydraulic system since the ring erosions are eliminated thanks to the novel telescopic cylinder structures and the possible chip formation caused by the erosibn is avoided.
- Another object of the invention is to present a safe high quality product when compared to the structures used in the state of the art, thanks to the novel telescopici cylinder structure.
- the present invention comprises a cushion piston structure with a plurality of pistons centered in a telescopic fanner and formed inside said main cylinder body.
- Figure 1 is a perspective cross-sectional view of the telescopic cylinder according to the invention when mounted.
- Figure 2 is a demounted perspective view of the pistons having safety stages formed inside the telescopic cylinder according to the invention.
- Figure 1 illustrates an overall perspective cross-sectional view of the! telescopic cylinder (100) which comprises a main cylinder body (101), a lower cover (103) that covers said main cylinder body (101 ) from the lower section thereof, end inner cylinder* that are centered one inside the other in said main cylinder body ( 101 ).
- said telescopic cylinder (100) comprises a cushion piston kit (500) with a plurality of pistons centered In a telescopic manner and formed Inside said main cylinder body (101 ).
- the cushion piston kit (500) formed Inside the main cylinder body ( 101 ) consists of at least one lower male piston (400) and a middle female piston (300) comprising a positioning slot (208) centered to the protrusion (401 ) of said lower male piston (400). It comprises an upper female piston (200) with a positioning slot (208) centered with said middle female piston (300) (See Figure 2).
- the stage resting sections (209) of the middle 10 female piston (300) and the upper female piston (200) have oil passage spaces (206).
- the lower male piston (400) stage (209) has a covered space (207).
- Large snap rings (204) which are fixed to the snap ring grooves (205) are formed in the lateral surfaces of the stages (209) of said lower male piston (400), middle female piston (300), and upper female piston (200).
- said upper female piston (200) is 1 5 secured with the third-stage cylinder (104) while said middle female piston (300) Is secured with the second-stage cylinder (105) and the lower male piston (400) is secured with the first-stage cylinder (106).
- the number of piston stages formed inside the telescopic cylinder (100) is preferably three. It is also possible to form more pistons if desired.
- the second-stage cylinder (105) is connected with the middle female piston (300).
- the first-stage cylinder (106) is connected to the lower male piston (400).
- first stage slowdown is achieved by means of the upper female piston (200) connected to the third-stage cylinder (104).
- the cushion piston kit (500) comprises interiacing positioning slots.
- Each positioning slot (208) hss a diameter different from the other one.
- the positioning slot (208) of the upper female piston (200) has a larger diameter than the positioning slot (208) of the middle female piston (300).
- the stage-resting section (209) is secured to the inner cylinders by means of the large snap rings (204).
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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 present invention is a telescopic cylinder (100) comprising a main cylinder body (101) and a lower cover (103) that covers said main cylinder body (101) from the lower section thereof, and inner cylinders that are centered one inside the other in said main cylinder body (101), wherein it comprises a cushion piston kit (500) with a plurality of pistons formed inside said main cylinder body (101), centered in a telescopic manner, and secured to each inner cylinder.
Description
A TELESCOPIC CYLINDER WITH A PLURALITY OF INNER PISTONS
Technical Field
The present invention is related to the telescopic cylinders which are used to lift the loads in heavy vehicles and different areas.
The present invention is particularly related to a plurality of pistons which are formed inside a telescopic cylinder and prevent the load-carrying body of the heavy vehicles from performing an abrupt strike with the load therein while said body is being brought to the normal position. Prior Art
Telescopic cylinders are hydraulic components which generate high stroke and power used to lift and lower the body of heavy vehicles. Telescopic cylinders are largely used in the structures which comprise a long-distance arm and with which the high loads are lifted. In the current telescopic systems, the metals collide with one another as the cylinder stages descend and this leads to a breakdown. As a result, the ring erosions are experienced and the chips occurring due to the ring erosions damage the sealing components. Therefore, the physical life of the cylinder shortens. Hence, a product with shorti physical life and a structure with high maintenance costs are obtained.
As a result of the patent search with respect to the telescopic cylinders, the application No. TR2004/02041 has been encountered. The abstract of this application is as follows: the invention is related to the telescopic cylinders, characterized in comprising ring grooves formed on the inner and outer surfaces of staged pipes, an inner ring located inside said ring grooves without requiring a welding process, outer stop ring, and outer fiat ring.
Another application is the application No. TR2007/01073. The abstract |of this application is as follows: The invention is related to a stage-locking system which ensures optimum
efficiency for the axial and radial movements of the multi-stage (telexcopic) cylinders, performs stage-stopping and bedding functions, and is made of GG2S speciaily-alioyed gray cast iron. The multi-stage (telescopic) hydraulic cylinders are the lifting systems which consist of telescopic pistons with different diameters used in many lifting mechanisms, particularly the heavy machinery and dumper trucks, and which are ideal for the application requiring high stroke.
Description of the invention
The object of the Invention is to offer different technical properties introducing a novel development in this field differently from the telescopic cylinder structures used in the state of the art.
An object of the Invention is to slow down the abrupt strike motion of the telescopic cylinder by means of a plurality of pistons formed inside the telescopic cylinder. Thus, it aims to eliminate the abrupt collision between the metals. An object of the invention Is to slow down the load resistance by utilizing a plurality of pistons formed inside the telescopic cylinder and the hydraulic fluid.
Another object of the invention is to minimize said collisions by means of a plurality of pistons formed inside the telescopic cylinder. Thus, it aims to eliminate the erosions.
Another object of the invention is to increase the physical life of the product by minimizing said collisions.
Yet another object of the invention is to provide sealing and Increase this physical life of the hydraulic system since the ring erosions are eliminated thanks to the novel telescopic cylinder structures and the possible chip formation caused by the erosibn is avoided.
Another object of the invention is to present a safe high quality product when compared to the structures used in the state of the art, thanks to the novel telescopici cylinder structure.
In order to achieve the abovementloned objects, the present invention comprises a cushion piston structure with a plurality of pistons centered in a telescopic fanner and formed
inside said main cylinder body.
Figures Facilitating the Understanding of the Invention
Figure 1 is a perspective cross-sectional view of the telescopic cylinder according to the invention when mounted. Figure 2 is a demounted perspective view of the pistons having safety stages formed inside the telescopic cylinder according to the invention.
Part Numerals
Detailed Description of the invention
Figure 1 illustrates an overall perspective cross-sectional view of the! telescopic cylinder (100) which comprises a main cylinder body (101), a lower cover (103) that covers said
main cylinder body (101 ) from the lower section thereof, end inner cylinder* that are centered one inside the other in said main cylinder body ( 101 ). As a novel property, said telescopic cylinder (100) comprises a cushion piston kit (500) with a plurality of pistons centered In a telescopic manner and formed Inside said main cylinder body (101 ).
5 Likewise, the cushion piston kit (500) formed Inside the main cylinder body ( 101 ) consists of at least one lower male piston (400) and a middle female piston (300) comprising a positioning slot (208) centered to the protrusion (401 ) of said lower male piston (400). It comprises an upper female piston (200) with a positioning slot (208) centered with said middle female piston (300) (See Figure 2). The stage resting sections (209) of the middle 10 female piston (300) and the upper female piston (200) have oil passage spaces (206).
Similarly, the lower male piston (400) stage (209) has a covered space (207).
Large snap rings (204) which are fixed to the snap ring grooves (205) are formed in the lateral surfaces of the stages (209) of said lower male piston (400), middle female piston (300), and upper female piston (200). On the other hand, said upper female piston (200) is 1 5 secured with the third-stage cylinder (104) while said middle female piston (300) Is secured with the second-stage cylinder (105) and the lower male piston (400) is secured with the first-stage cylinder (106).
The number of piston stages formed inside the telescopic cylinder (100) is preferably three. It is also possible to form more pistons if desired. For example, the third-stage cylinder (104)
20 is associated or secured with the upper female piston (200), The second-stage cylinder (105) is connected with the middle female piston (300). And, the first-stage cylinder (106) is connected to the lower male piston (400). In case the telescopic cylinder (100) is closed; that is to say the load is lowered, first stage slowdown is achieved by means of the upper female piston (200) connected to the third-stage cylinder (104). Afterwards, second stage
25 slowdown is achieved by means of the middle female piston (300) connected to the second-stage cylinder (105). Since oil passage spaces (206) are formed in the stage-resting section (209) of the upper female piston (200) and the middle female piston (300) and the hydraulic fluid passes through these spaces by being compressed, high level of slowdown effect is achieved. Therefore, the load Is prevented from descending abruptly
30 and colliding.
The cushion piston kit (500) comprises interiacing positioning slots. Each positioning slot
(208) hss a diameter different from the other one. For Instance, the positioning slot (208) of the upper female piston (200) has a larger diameter than the positioning slot (208) of the middle female piston (300). On the other hand, the stage-resting section (209) is secured to the inner cylinders by means of the large snap rings (204). However, it is also possible to secure said stage-resting section by welding and by means of differeht fixing members other than the large snap rings (204).
Claims
1- A telescopic cylinder (100) comprising a main cylinder body (101) and ia lower cover (103) that covers said main cylinder body (101) from the lower section thereof, and inner cylinders that are centered one inside the other in said main cylinder body (101), characterized In comprising
- a cushion piston kit (500) with a plurality of pistons formed inside said main cylinder body (101), centered in a telescopic manner, and secured to each inner cylinder.
2- A telescopic cylinder (100) according to Claim 1, characterized in that the cushion piston kit (500) formed inside said main cylinder body (101) comprises at least one lower male piston (400).
3- A telescopic cylinder (100) according to Claim 1 , characterized in comprising a middle female piston (300) with a positioning slot (208) which is centered to theiprotrusion (401) of said lower male piston (400).
4« A telescopic cylinder (100) according to Claim 1, characterized in comprising an upper female piston (200) with a positioning slot (208) which is centered with said middle female piston (300).
6· A telescopic cylinder (100) according to Claim 1, characterized In that the stage-resting sections (209) of said middle female piston (300) and upper female piston (200) comprise oil passage spaces (206). 6- A telescopic cylinder (100) according to Claim 2, characterized in that the stage-resting section (209) of said lower male piston (400) comprises a covered spaced (207).
7- A telescopic cylinder (100) according to Claim 1 , characterized in comprising large snap rings (204) which are fixed to the snap ring grooves (205) formed on the; lateral surfaces of the stage-resting sections (209) of said lower male piston (400), middle female piston (300), and upper female piston (200),
8- A telescopic cylinder (100) according to Claim 1, characterized in that said upper female piston (200) is secured with the third-stage cylinder (104).
9- A telescoplc cylinder (100) according to Claim 1 , characterized in that said middle female piston (300) is secured with the second-stage cylinder (105).
10- A telescopic cylinder (100) according to Claim 1 , characterized in that said lower male piston (400) is secured with the first-stage cylinder (106).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR201412272 | 2014-10-20 | ||
| TR2014/12272 | 2014-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016064356A1 true WO2016064356A1 (en) | 2016-04-28 |
Family
ID=53496922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2015/000171 WO2016064356A1 (en) | 2014-10-20 | 2015-04-24 | A telescopic cylinder with a plurality of inner pistons |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2016064356A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2807129C1 (en) * | 2023-05-05 | 2023-11-09 | Государственное бюджетное образовательное учреждение высшего образования "Альметьевский государственный нефтяной институт" | Telescopic lift with pneumatic drive |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE907118C (en) * | 1942-09-12 | 1954-03-22 | Else Schuetz Rose Geb Lamprech | Pneumatic or hydraulic lifting table |
| US2692584A (en) * | 1952-03-18 | 1954-10-26 | Gen Motors Corp | Expansible chamber type hydraulic hoist construction |
| DE1238642B (en) * | 1965-06-05 | 1967-04-13 | Brauer Fa Heinrich | Hydraulic telescopic cylinder |
| US3797366A (en) * | 1972-07-14 | 1974-03-19 | Vetco Offshore Ind Inc | Telescopic hydraulic decelerator |
| US3973468A (en) * | 1973-11-21 | 1976-08-10 | Russell Jr Wayne B | Multi-stage extendible and contractible shaft with shock absorption |
| JPS5980512A (en) * | 1982-10-27 | 1984-05-10 | Taiyo Tekko Kk | Multistage fluid pressure cylinder with cushion |
| TR200402041U (en) | 2004-08-17 | 2005-04-21 | Gali̇poğlu Hi̇dromas Hi̇droli̇k Otomoti̇v Sanayi̇ Ve Ti̇caret | Circlip and ring grooves for telescopic cylinders. |
| TR200701073U (en) | 2007-02-22 | 2007-04-24 | Mustafa Ceylan Hi̇droli̇k Maki̇ne Sanayi̇ Ve Ti̇c. A.Ş.@ | Special metal alloy tap lock system for multi-stage cylinders. |
| WO2013067799A1 (en) * | 2011-11-11 | 2013-05-16 | 湖南三一智能控制设备有限公司 | Multi-stage and single-action hydraulic cylinder and engineering machinery having same |
-
2015
- 2015-04-24 WO PCT/TR2015/000171 patent/WO2016064356A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE907118C (en) * | 1942-09-12 | 1954-03-22 | Else Schuetz Rose Geb Lamprech | Pneumatic or hydraulic lifting table |
| US2692584A (en) * | 1952-03-18 | 1954-10-26 | Gen Motors Corp | Expansible chamber type hydraulic hoist construction |
| DE1238642B (en) * | 1965-06-05 | 1967-04-13 | Brauer Fa Heinrich | Hydraulic telescopic cylinder |
| US3797366A (en) * | 1972-07-14 | 1974-03-19 | Vetco Offshore Ind Inc | Telescopic hydraulic decelerator |
| US3973468A (en) * | 1973-11-21 | 1976-08-10 | Russell Jr Wayne B | Multi-stage extendible and contractible shaft with shock absorption |
| JPS5980512A (en) * | 1982-10-27 | 1984-05-10 | Taiyo Tekko Kk | Multistage fluid pressure cylinder with cushion |
| TR200402041U (en) | 2004-08-17 | 2005-04-21 | Gali̇poğlu Hi̇dromas Hi̇droli̇k Otomoti̇v Sanayi̇ Ve Ti̇caret | Circlip and ring grooves for telescopic cylinders. |
| TR200701073U (en) | 2007-02-22 | 2007-04-24 | Mustafa Ceylan Hi̇droli̇k Maki̇ne Sanayi̇ Ve Ti̇c. A.Ş.@ | Special metal alloy tap lock system for multi-stage cylinders. |
| WO2013067799A1 (en) * | 2011-11-11 | 2013-05-16 | 湖南三一智能控制设备有限公司 | Multi-stage and single-action hydraulic cylinder and engineering machinery having same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2807129C1 (en) * | 2023-05-05 | 2023-11-09 | Государственное бюджетное образовательное учреждение высшего образования "Альметьевский государственный нефтяной институт" | Telescopic lift with pneumatic drive |
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