CN210423239U - Lifting oil cylinder - Google Patents
Lifting oil cylinder Download PDFInfo
- Publication number
- CN210423239U CN210423239U CN201921437032.2U CN201921437032U CN210423239U CN 210423239 U CN210423239 U CN 210423239U CN 201921437032 U CN201921437032 U CN 201921437032U CN 210423239 U CN210423239 U CN 210423239U
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- piston rod
- cylinder
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- rod
- piston
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a lift cylinder, includes cylinder, piston rod and uide bushing, and cylinder length direction one end is uncovered, and the uide bushing is installed at the cylinder open end, and the piston rod is including end to end's pole bottom, pole body, pole head in proper order, and the piston is installed on the pole bottom, and the pole head of piston rod wears out the cylinder from the cylinder open end, and piston, piston rod axial displacement in the cylinder, the piston rod shaft be hollow pipe body, be equipped with the first oilhole of arranging along the piston rod axial on the pole bottom, first oilhole intercommunication pole body inner chamber and cylinder inner chamber are equipped with the second oilhole of following piston rod axial intercommunication pole body inner chamber on the pole head, correspond second oilhole department on the tip position of piston rod pole head and be equipped with the plug screw hole, plug screw hole intercommunication, the downthehole spiral of plug. The oil cylinder has the advantages of simple structure, light weight, reliable performance, good stability during operation and low processing cost.
Description
Technical Field
The utility model relates to a lift cylinder.
Background
The oil cylinders used by heavy forklift trucks, hoisting equipment and other large engineering machinery generally have long stroke and high pressure, and have higher requirement on the stability of the compression bar of the piston rod. At present, the stability of the pressure rod is basically enhanced by increasing the diameter size of the piston rod, but because the oil cylinder of the equipment has larger size and heavier weight, the increase of the diameter of the piston rod not only needs to increase the weight, but also can increase the cost of the oil cylinder. In order to reduce the weight of the whole vehicle and the oil cylinder, some manufacturers often adopt the oil cylinder design of the hollow piston rod, and the use of the hollow piston rod can reduce the weight of components, save materials and reduce the cost. However, the use of the hollow piston rod inevitably reduces the cross-sectional area of the piston rod, and certain influence is generated on the stability of the compression bar of the piston rod.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a lift cylinder that light in weight, dependable performance and operating stability are good is provided.
For solving the technical problem, the utility model provides a lift cylinder, including cylinder, piston rod and uide bushing, cylinder length direction one end is uncovered, and the uide bushing is installed at the cylinder opening end, and the piston rod is including end to end's the pole end, pole body, pole head in proper order, and the piston is installed on the pole end, and the cylinder is worn out from the cylinder opening end to the pole head of piston rod, piston rod axial displacement in the cylinder, the piston rod shaft be hollow pipe body, be equipped with the first oilhole of arranging along the piston rod axial on the pole end, first oilhole intercommunication pole body inner chamber and cylinder inner chamber are equipped with the second oilhole along piston rod axial intercommunication pole body inner chamber on the pole head, correspond second oilhole department on the tip position of piston rod head and be equipped with the plug screw hole, plug screw hole internal spiral be equipped with plug screw hole assorted plug screw.
For the sake of simple explanation, the following is the lift cylinder of the present invention, which is simply referred to as the present cylinder.
The working principle of the oil cylinder is as follows: before the oil cylinder works, the screw plug is taken down firstly, then oil enters the cylinder barrel from the oil hole at the bottom of the oil cylinder, the inner cavity of the piston rod is filled with oil through the first oil hole, and finally the second oil hole is sealed by the screw plug. When the oil cylinder works, pressure is generated in the cylinder barrel and the piston rod. The internal surface of the piston rod generates a force perpendicular to the internal surface of the piston rod due to the pressure of the oil. When the piston rod is forced to have a tendency to bend or deform, the forces generated inside will prevent this tendency to deform (as if the balloon is easily deflated when there is no pressure inside, and will have a certain resistance to deformation when the interior is filled with gas pressure), thereby supporting the overall stability of the piston rod.
The oil cylinder has the advantages that: the oil cylinder has the advantages of simple structure, light weight, reliable performance, good stability during operation and low processing cost.
Drawings
Fig. 1 is a schematic structural diagram of the oil cylinder.
Fig. 2 is a schematic structural diagram of a piston rod in the oil cylinder.
Detailed Description
Referring to fig. 1 and 2, a lifting cylinder comprises a cylinder barrel 1, a piston 2, a piston rod 3 and a guide sleeve 4, wherein one end of the cylinder barrel 1 in the length direction is open, the guide sleeve 4 is installed at the open end of the cylinder barrel 1, the piston rod 3 comprises a rod bottom 31, a rod body 32 and a rod head 33 which are sequentially connected end to end, the piston 2 is installed on the rod bottom 31, the rod head 33 of the piston rod 3 penetrates through the cylinder barrel 1 from the open end of the cylinder barrel 1, the piston 2 and the piston rod 3 axially move in the cylinder barrel 1, the rod body 32 of the piston rod 3 is a hollow round pipe body, a first oil hole 311 which is axially arranged along the piston rod 3 is arranged on the rod bottom 31, the first oil hole 311 is communicated with an inner cavity 34 of the rod body 32 and an inner cavity of the cylinder barrel 1, a second oil hole 331 which is axially communicated with the inner cavity 34 of the rod body 32 along the piston rod 3 is arranged on the, the screw plug 333 matched with the screw plug hole 332 is screwed in the screw plug hole 332.
The working principle of the oil cylinder is as follows: before the oil cylinder works, the screw plug 333 is firstly taken down, then oil enters the cylinder barrel 1 from the oil inlet 11 at the bottom of the oil cylinder, the inner cavity 34 of the rod body 32 is filled with oil through the first oil hole 311, and finally the second oil hole 331 is sealed by the screw plug 333. When the oil cylinder works, pressure is generated in the cylinder barrel 1 and the piston rod 3. The pressure of the oil inside the piston rod 3 can support the overall stability of the piston rod 3.
The oil cylinder has the advantages that: the oil cylinder has the advantages of simple structure, light weight, reliable performance, good stability during operation and low processing cost.
Claims (1)
1. The utility model provides a lift cylinder, includes cylinder, piston rod and uide bushing, and cylinder length direction one end is uncovered, and the uide bushing is installed at the cylinder open end, and the piston rod is including end to end's the pole bottom, pole body, pole head in proper order, and the piston is installed on the pole bottom, and the cylinder is worn out from the cylinder open end to the pole head of piston rod, piston rod axial displacement in the cylinder, its characterized in that: the rod body of the piston rod is a hollow round pipe body, a first oil hole which is arranged along the axial direction of the piston rod is arranged on the rod bottom and is communicated with the inner cavity of the rod body and the inner cavity of the cylinder barrel, a second oil hole which is communicated with the inner cavity of the rod body along the axial direction of the piston rod is arranged on the rod head, a plug screw hole is arranged at the position, corresponding to the second oil hole, of the end part of the rod head of the piston rod, the plug screw hole is communicated with the second oil hole, and a plug screw matched with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437032.2U CN210423239U (en) | 2019-08-29 | 2019-08-29 | Lifting oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437032.2U CN210423239U (en) | 2019-08-29 | 2019-08-29 | Lifting oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423239U true CN210423239U (en) | 2020-04-28 |
Family
ID=70365418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921437032.2U Active CN210423239U (en) | 2019-08-29 | 2019-08-29 | Lifting oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210423239U (en) |
-
2019
- 2019-08-29 CN CN201921437032.2U patent/CN210423239U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |