CN202810875U - Whole and single hydraulic support of plunger - Google Patents
Whole and single hydraulic support of plunger Download PDFInfo
- Publication number
- CN202810875U CN202810875U CN 201220440530 CN201220440530U CN202810875U CN 202810875 U CN202810875 U CN 202810875U CN 201220440530 CN201220440530 CN 201220440530 CN 201220440530 U CN201220440530 U CN 201220440530U CN 202810875 U CN202810875 U CN 202810875U
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- Prior art keywords
- hole
- whole
- plunger
- hydraulic support
- single hydraulic
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- 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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Abstract
The utility model discloses a whole and single hydraulic support of a plunger. The whole and single hydraulic support comprises a base, wherein the base is provided with an oil cylinder, and the oil cylinder is internally sleeved with a plunger cylinder; and the whole and single hydraulic support is characterized in that the plunger cylinder is provided with a through hole, the outer part of the through hole of a plunger body is sleeved with a handle body, and the handle body is provided with an oil injection hole which corresponds to and is communicated with the through hole. Compared with the prior art, the whole and single hydraulic support disclosed by the utility model has the advantages that the strength is large, and the phenomena of bending and fracturing cannot happen.
Description
Technical field
The utility model relates to a kind of technical field of support apparatus in coal mine---hydraulic prop, specifically establishes the hydraulic prop of through hole and oiling on the plunger tube.
Background technology
Outer feed flow fast constant-resistance type hydraulic prop, be used with DJA or DJB type metal roof bar, for colliery common mechanical coal-face supporting roof, simultaneously also can be for fully-mechanized coalface end support top board, also applicable to combining generally supporting in the rivet clasp point post of adopting face end support or other tunnel.
At present, following problem has in use appearred in the hydraulic single prop of the type.
(1) this type individual prop column cap and plunger tube weld in the Bracing Process of down-hole, bend easily easily, the defective such as fracture.
(2) pore volume of the type column cap and triple-use valve assembling easily occurs flattening the defectives such as pressure break under condition of loading.
Summary of the invention
The purpose of this utility model is the deficiencies such as flexible, fracture that produce for welding in the prior art, and a kind of intensity that provides greatly, can not produce the post integral body hydraulic prop alives of bending, phenomenon of rupture.
For achieving the above object, the technical scheme that the utility model adopts is as follows:
The whole hydraulic prop of a kind of post alive, comprise that base, base are provided with oil cylinder, be arranged with plunger tube in the oil cylinder, described plunger tube is provided with through hole, the through hole outer cover of plunger tube is provided with handle body, and described handle body is provided with oil filler point corresponding with through hole and that be communicated with.
The beneficial effects of the utility model show:
The utility model is provided with through hole at plunger tube, and is provided with handle body in the through hole outer cover of plunger tube, and described handle body is provided with oil filler point corresponding with through hole and that be communicated with.
Oiling just can be carried out oiling by oil filler point after adopting said structure, the technique and the counter structure that need to weld column cap and triple-use valve have been abandoned in the past, can there be the variation of the local stress that produces because of welding, therefore just can not produce the defectives such as weld bends easily easily, fracture yet in the Bracing Process of down-hole.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
As shown in Figure 1, the whole hydraulic prop of a kind of post alive comprises that base 1, base 1 are provided with oil cylinder 2, are arranged with plunger tube 3 in the oil cylinder 2.
Described plunger tube 3 inner upper end are arranged with end cap 4, and plunger tube 3 and end cap 4 upper ends are arranged with column cap 5.
Described plunger tube 3 middle and upper parts are provided with through hole 6, and through hole 6 outer cover of plunger tube 3 are provided with handle body 7, and described handle body 7 is provided with oil filler point 8 corresponding with through hole and that be communicated with.
Base upper center, middle part, end cap lower end all are provided with hook, are linked with spring between two hooks.
During use, by the inside oiling of the oil filler point of handle body or drain the oil, realize the lifting of hydraulic prop, satisfy its normal operation needs.
As seen, this novel hydraulic pillar removes the welding column cap, live post boring and with special handle body in the fluid injection of plunger tube side.Fundamentally solve the generation of the defective of mentioning in the background technology, greatly improve the intensity of pillar, make the phenomenons such as its press-bending that can not produce column cap and plunger tube weld strength and produce not, fracture.Simultaneously, hole phenomenons such as flattening, fracture under load of assembling with triple-use valve on the column cap have been stopped in the side fluid injection.
Claims (1)
1. the whole hydraulic prop of post alive comprises that base, base are provided with oil cylinder, are arranged with plunger tube in the oil cylinder, it is characterized in that, described plunger tube is provided with through hole, and the through hole outer cover of plunger tube is provided with handle body, and described handle body is provided with oil filler point corresponding with through hole and that be communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220440530 CN202810875U (en) | 2012-08-31 | 2012-08-31 | Whole and single hydraulic support of plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220440530 CN202810875U (en) | 2012-08-31 | 2012-08-31 | Whole and single hydraulic support of plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202810875U true CN202810875U (en) | 2013-03-20 |
Family
ID=47869773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220440530 Expired - Fee Related CN202810875U (en) | 2012-08-31 | 2012-08-31 | Whole and single hydraulic support of plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202810875U (en) |
-
2012
- 2012-08-31 CN CN 201220440530 patent/CN202810875U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20130320 Termination date: 20150831 |
|
| EXPY | Termination of patent right or utility model |