CN202883542U - Installation structure of hydraulic ram piston rod and rear end cap - Google Patents
Installation structure of hydraulic ram piston rod and rear end cap Download PDFInfo
- Publication number
- CN202883542U CN202883542U CN 201220447503 CN201220447503U CN202883542U CN 202883542 U CN202883542 U CN 202883542U CN 201220447503 CN201220447503 CN 201220447503 CN 201220447503 U CN201220447503 U CN 201220447503U CN 202883542 U CN202883542 U CN 202883542U
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- CN
- China
- Prior art keywords
- piston rod
- rear end
- end cap
- end cover
- hydraulic ram
- 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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- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Actuator (AREA)
Abstract
The utility model discloses an installation structure of a hydraulic ram piston rod and a rear end cap. The installation structure of the hydraulic ram piston rod and the rear end cap comprises a hydraulic ram base seat, a rear end cap and a hydraulic ram. The rear end cap is arranged at one end of the hydraulic ram base seat. An installation hole which is used for installing a piston rod is formed in the rear end cap. An anti-rotating structure which is with a matched key groove is arranged between the installation hole and an installation section of the piston rod. A key is arranged on the installation section of the piston rod. A groove is formed in the corresponding installation hole. Due to the fact that the key groove anti-rotating structure is arranged between the installation section of the piston rod and the installation hole of the rear end cap, the installation structure of the hydraulic ram piston rod and the rear end cap is simple in structure and easy to achieve, phenomenon of relative rotation between the piston rod and the rear end cap is avoided, and the whole mechanism operates safely and reliably.
Description
Technical field
The utility model relates to a kind of hydraulic jack, relates in particular to a kind of piston rod of hydraulic jack and the mounting structure of rear end cover.
Background technique
Hydraulic jack is the critical piece of engineering machinery, is equipped with special tool and can carries out the various operations such as lifting, bending, alignment, extruding, shearing, rivet welding, jacking, stretching, dismounting, punching, building iron extruding, bridge, engineering machinery.
At present, adopt interference fit between the piston rod construction section of traditional hydraulic jack and the rear end cover, so that must not displacement rotate between the two, but in the course of working of reality, owing to reasons such as mechanism wears after the improper or long-term use of tolerance fit control, cause still can producing relative rotation phenomenon between the two, and rotation phenomenon very easily causes the damage of stroke indicating device and oil inlet pipe, affects the normal operation of mechanism.
The model utility content
The purpose of this utility model is to provide a kind of hydraulic cylinder piston rod and rear end cover mounting structure, its have simple in structure, be easy to the characteristics that realize and can stop to produce relative rotation between piston rod and the rear end cover, effectively solved in the prior art hydraulic cylinder piston rod and rear end cover the problem that exists be installed.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of hydraulic cylinder piston rod and rear end cover mounting structure, it comprises oil cylinder seat, rear end cover and oil hydraulic cylinder, described rear end cover is arranged at an end of oil cylinder seat, offer on the described rear end cover for the mounting hole that piston rod is installed, wherein, be provided with the rotation prevention structure that keyway cooperates between the construction section of described mounting hole and piston rod.
Especially, be provided with key on the described piston rod construction section, offer groove in the corresponding mounting hole.
Especially, the inwall of described mounting hole is provided with key, and groove is offered on the surface of corresponding piston rod construction section.
Especially, described key is the round end flat key.
The beneficial effects of the utility model are, compared with prior art it adopts increase keyway rotation prevention structure between piston rod construction section and rear end cover mounting hole for described hydraulic cylinder piston rod and rear end cover mounting structure, not only simple in structure, be easy to realize, and stopping the phenomenon that produces relative rotation between piston rod and the rear end cover, whole mechanism is safe and reliable to operation.
Description of drawings
Fig. 1 is the hydraulic cylinder piston rod that provides of the utility model embodiment 1 and the structural representation of rear end cover mounting structure.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
See also shown in Figure 1ly, Fig. 1 is the hydraulic cylinder piston rod that provides of the utility model embodiment 1 and the structural representation of rear end cover mounting structure.
In the present embodiment, a kind of hydraulic cylinder piston rod and rear end cover mounting structure comprise oil cylinder seat 1, rear end cover 2 and oil hydraulic cylinder 3, described rear end cover 2 is arranged at an end of oil cylinder seat 1, and offer on the described rear end cover 2 for the mounting hole that piston rod is installed, be provided with the rotation prevention structure that keyway cooperates between the construction section 4 of described mounting hole and piston rod, be provided with round end flat key 5 on the described piston rod construction section 4, offer groove in the corresponding mounting hole, the outside of described rear end cover 2 is installed into oil pipe 6 and stroke indicating device 7.
Certainly, the keyway setting position between the construction section 4 of described mounting hole and piston rod also can for, be provided with key at the inwall of described mounting hole, groove is offered on the surface of corresponding piston rod construction section 4.
Above embodiment has just set forth basic principle of the present utility model and characteristic; the utility model is not limited by above-mentioned example; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various variations and change, and these variations and change all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. a hydraulic cylinder piston rod and rear end cover mounting structure, it comprises oil cylinder seat, rear end cover and oil hydraulic cylinder, described rear end cover is arranged at an end of oil cylinder seat, offer on the described rear end cover for the mounting hole that piston rod is installed, it is characterized in that: be provided with the rotation prevention structure that keyway cooperates between the construction section of described mounting hole and piston rod.
2. hydraulic cylinder piston rod according to claim 1 and rear end cover mounting structure; It is characterized in that: be provided with key on the described piston rod construction section, offer groove in the corresponding mounting hole.
3. hydraulic cylinder piston rod according to claim 1 and rear end cover mounting structure; It is characterized in that: the inwall of described mounting hole is provided with key, and groove is offered on the surface of corresponding piston rod construction section.
4. according to claim 2 or 3 each described hydraulic cylinder piston rod and rear end cover mounting structures; It is characterized in that: described key is the round end flat key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220447503 CN202883542U (en) | 2012-09-04 | 2012-09-04 | Installation structure of hydraulic ram piston rod and rear end cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220447503 CN202883542U (en) | 2012-09-04 | 2012-09-04 | Installation structure of hydraulic ram piston rod and rear end cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883542U true CN202883542U (en) | 2013-04-17 |
Family
ID=48074975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220447503 Expired - Fee Related CN202883542U (en) | 2012-09-04 | 2012-09-04 | Installation structure of hydraulic ram piston rod and rear end cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829024A (en) * | 2012-09-04 | 2012-12-19 | 无锡市长江液压缸厂 | Mounting structure for piston rod and rear end cover of hydraulic cylinder |
-
2012
- 2012-09-04 CN CN 201220447503 patent/CN202883542U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829024A (en) * | 2012-09-04 | 2012-12-19 | 无锡市长江液压缸厂 | Mounting structure for piston rod and rear end cover of hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20190904 |