CN202718947U - Lifting oil cylinder for forklift with buffering function - Google Patents
Lifting oil cylinder for forklift with buffering function Download PDFInfo
- Publication number
- CN202718947U CN202718947U CN 201220254884 CN201220254884U CN202718947U CN 202718947 U CN202718947 U CN 202718947U CN 201220254884 CN201220254884 CN 201220254884 CN 201220254884 U CN201220254884 U CN 201220254884U CN 202718947 U CN202718947 U CN 202718947U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston rod
- cylinder barrel
- oil
- oil cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Fluid-Damping Devices (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a lifting oil cylinder for a forklift with a buffering function, and the oil cylinder comprises a cylinder and a piston rod; the end of the cylinder on the extension end of the piston rod is provided with a cylinder cover through a guide sleeve; the extension end of the piston rod and the bottom end of the cylinder are respectively provided with threaded installation holes; two spring fixing sleeves are sleeved on the piston rod in the cylinder; a buffer spring is sleeved on the piston rod between the spring fixing sleeves; the bottom of the cylinder is provided with an oil inlet nozzle which is communicated with the cavity of the cylinder; a position on the side wall of the cylinder which is close to the cylinder cover is provided with an oil return nozzle; the contacted parts of the cylinder cover and the extension end of the piston rod are in sealed connection through a seal piece; a piston on the end of the piston rod is slidably matched with the inner wall of the cylinder through a carriage; and the carriage and the inner wall of the cylinder are sealed and matched through a seal ring. According to the lifting oil cylinder for the forklift with the buffering function, due to a structural design of the two spring fixing sleeves and the buffer spring on the piston rod in the cylinder, the lifting oil cylinder is not subjected to quite strong impact vibration when working, so that the oil cylinder works safely and stably, and meanwhile the service life of the oil cylinder is prolonged.
Description
Technical field
The utility model relates to a kind of oil cylinder, relates in particular to a kind of hoisting cylinder for fork truck with buffer function.
Background technique
To need to drive the pallet fork lifting by door frame during fork truck work, and the lifting of door frame just need to use hoist cylinder, the impact endurance test shock that hoist cylinder on the fork truck is subject to when working is stronger, affect the working life of oil cylinder, and existing cylinder structure is simple, poor seismic behavior, working life is short, can not satisfy usage requirement.
The model utility content
The purpose of this utility model is in order to remedy the deficiency of prior art, a kind of hoisting cylinder for fork truck with buffer function to be provided, solved existing cylinder structure simple, poor seismic behavior, and working life is short, can not satisfy the problems such as usage requirement.
The utility model is achieved through the following technical solutions:
A kind of hoisting cylinder for fork truck with buffer function, include cylinder barrel and piston rod, it is characterized in that: the cylinder barrel end of described piston rod external part is equipped with cylinder cap by guide sleeve, the external part end of described piston rod and the bottom of cylinder barrel are respectively equipped with threaded mounting hole, upper cover of piston rod in the described cylinder barrel is equipped with two spring retaining sleeves, upper cover of piston rod between the described spring retaining sleeve is equipped with damping spring, the bottom of described cylinder barrel is provided with the oil-feed mouth of pipe that is communicated with the cylinder barrel cavity, is provided with the oil return mouth of pipe near the cylinder cap position on the described cylinder barrel sidewall; The contact position of described cylinder cap and piston rod external part is tightly connected by Sealing, and the piston of described piston rod end is slidingly matched by bearing support and inner wall of cylinder, and is sealed and matched by seal ring between supporting frame and the inner wall of cylinder.
Described piston rod is fixedly mounted on the door frame by the threaded mounting hole of end, and described cylinder barrel bottom is fixedly mounted on the frame fitting seat by the threaded mounting hole by the end.
Described cylinder cap also is provided with dust ring with the contact position of the piston rod that stretches out.
Its principle is: by two spring retaining sleeves on the piston rod in the cylinder barrel and the structural design of damping spring, when oil cylinder can play buffer function when shrinking, the impact endurance test shock that has been subject to when having avoided hoist cylinder work is stronger, affect the problem in working life, can make the work of oil cylinder safety and stability, increase simultaneously the working life of oil cylinder.
The utility model has the advantages that:
The utility model is crossed two spring retaining sleeves on the piston rod in the cylinder barrel and the structural design of damping spring, and the impact endurance test shock that has been subject to when having avoided hoist cylinder work is stronger, can make the work of oil cylinder safety and stability, has increased simultaneously the working life of oil cylinder.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Referring to accompanying drawing, a kind of hoisting cylinder for fork truck with buffer function, include cylinder barrel 1 and piston rod 2, cylinder barrel 1 end of piston rod 2 external parts is equipped with cylinder cap 4 by guide sleeve 3, the external part end of piston rod 2 and the bottom of cylinder barrel 1 are respectively equipped with threaded mounting hole 5,6, be set with two spring retaining sleeves 7,8 on the piston rod 2 in the cylinder barrel 1, be set with damping spring 9 on the piston rod 2 between the spring retaining sleeve 7,8, the bottom of cylinder barrel 1 is provided with the oil-feed mouth of pipe 10 that is communicated with cylinder barrel 1 cavity, is provided with the oil return mouth of pipe 11 near cylinder cap 4 positions on cylinder barrel 1 sidewall; Cylinder cap 4 is tightly connected by Sealing with the contact position of piston rod 2 external parts, and the piston of piston rod 2 ends is slidingly matched by bearing support 12 and cylinder barrel 1 inwall, and is sealed and matched by seal ring 13 between supporting frame 12 and cylinder barrel 1 inwall; Piston rod 2 is fixedly mounted on the door frame by the threaded mounting hole 5 of end, and cylinder barrel 1 bottom is fixedly mounted on the frame fitting seat by the threaded mounting hole 6 by the end; Described cylinder cap 4 also is provided with dust ring 14 with the contact position of the piston rod 2 that stretches out.
Claims (3)
1. hoisting cylinder for fork truck with buffer function, include cylinder barrel and piston rod, it is characterized in that: the cylinder barrel end of described piston rod external part is equipped with cylinder cap by guide sleeve, the external part end of described piston rod and the bottom of cylinder barrel are respectively equipped with threaded mounting hole, upper cover of piston rod in the described cylinder barrel is equipped with two spring retaining sleeves, upper cover of piston rod between the described spring retaining sleeve is equipped with damping spring, the bottom of described cylinder barrel is provided with the oil-feed mouth of pipe that is communicated with the cylinder barrel cavity, is provided with the oil return mouth of pipe near the cylinder cap position on the described cylinder barrel sidewall; The contact position of described cylinder cap and piston rod external part is tightly connected by Sealing, and the piston of described piston rod end is slidingly matched by bearing support and inner wall of cylinder, and is sealed and matched by seal ring between supporting frame and the inner wall of cylinder.
2. a kind of hoisting cylinder for fork truck with buffer function according to claim 1, it is characterized in that: described piston rod is fixedly mounted on the door frame by the threaded mounting hole of end, and described cylinder barrel bottom is fixedly mounted on the frame fitting seat by the threaded mounting hole by the end.
3. a kind of hoisting cylinder for fork truck with buffer function according to claim 1 is characterized in that: described cylinder cap also is provided with dust ring with the contact position of the piston rod that stretches out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220254884 CN202718947U (en) | 2012-05-31 | 2012-05-31 | Lifting oil cylinder for forklift with buffering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220254884 CN202718947U (en) | 2012-05-31 | 2012-05-31 | Lifting oil cylinder for forklift with buffering function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202718947U true CN202718947U (en) | 2013-02-06 |
Family
ID=47620771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220254884 Expired - Fee Related CN202718947U (en) | 2012-05-31 | 2012-05-31 | Lifting oil cylinder for forklift with buffering function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202718947U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564895A (en) * | 2013-10-24 | 2015-04-29 | 比亚迪股份有限公司 | Single-acting plunger cylinder and forklift |
| CN106660706A (en) * | 2014-08-15 | 2017-05-10 | 德马泰克公司 | Right angle transfer |
| CN108266422A (en) * | 2017-01-03 | 2018-07-10 | 山东科技大学 | A kind of buffering hydraulic cylinder |
-
2012
- 2012-05-31 CN CN 201220254884 patent/CN202718947U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564895A (en) * | 2013-10-24 | 2015-04-29 | 比亚迪股份有限公司 | Single-acting plunger cylinder and forklift |
| CN104564895B (en) * | 2013-10-24 | 2017-02-15 | 比亚迪股份有限公司 | Single-acting plunger cylinder and forklift |
| CN106660706A (en) * | 2014-08-15 | 2017-05-10 | 德马泰克公司 | Right angle transfer |
| CN108266422A (en) * | 2017-01-03 | 2018-07-10 | 山东科技大学 | A kind of buffering hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHENYE MACHINERY CO., LTD. OF NBO MACHINERY EQUIPM Free format text: FORMER NAME: ANHUI ZHENYE MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 237451, Anhui County, Lu'an City, Huoqiu province Hu Town Industrial Zone Patentee after: Precision Hydraulic Parts Co., Ltd. of NBO Machinery Equipment Co., Ltd. Address before: 237451, Anhui County, Lu'an City, Huoqiu province Hu Town Industrial Zone Patentee before: Anhui Zhenye Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20150531 |
|
| EXPY | Termination of patent right or utility model |