CN201747393U - Plunger type topping column - Google Patents
Plunger type topping column Download PDFInfo
- Publication number
- CN201747393U CN201747393U CN201020521470XU CN201020521470U CN201747393U CN 201747393 U CN201747393 U CN 201747393U CN 201020521470X U CN201020521470X U CN 201020521470XU CN 201020521470 U CN201020521470 U CN 201020521470U CN 201747393 U CN201747393 U CN 201747393U
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- CN
- China
- Prior art keywords
- base
- pull rod
- column
- plunger type
- pin
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- Expired - Fee Related
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Abstract
The utility model discloses a plunger type topping column relating to mining equipment. A plunger type upright column is used as a load bearing support column. The topping column has low requirements for the size accuracy and the surface roughness of a cylinder and a piston rod. The processing is convenient, the manufacture cost is low, and the work efficiency is improved. A movable pull rod 2 is arranged on the base 1 of the topping column for preventing the upright column from tilting under unbalanced load. The pull rod 2 is an I-shaped steel component. A square hole is arranged on the base 1, and the pull rod 2 is slidingly inserted in the square hole. A dowel pin 3 is arranged between the base 1 and the pull rod 2, and a cotter pin 3-1 is arranged at the upper end of the dowel pin 3. The position of the pull rod 2 is fixed by the dowel pin 3 for avoiding slip. The dowel pin 3 is fixed by the cotter pin 3-1. The pull rod 2 can be inserted from one side of the base 1, and can also be inserted from the other side of the base 1. When used, the topping column is protected from tilting according the force applying direction and the tilting direction of the upright column. A support leg 2-1 is arranged on the outer end bottom of the pull rod 2. The support leg 2-1 is the support point of the outer end of the pull rod 2, so the tilting prevention effect is better.
Description
Technical field
The utility model relates to a kind of mining equiment, is specifically related to the fore-set of cutting that the coal-face supporting is used under the coal mine and can move forward and backward supporting.
Background technology
Cut fore-set and be the important support apparatus that uses when the colliery mining face under mine is cut a hole into back production.The fore-set of cutting that uses is the piston hydraulic pillar at present, and its structure is made up of cylinder body, piston, seal etc., and sealing ring is installed on the piston, and sealing ring prolongs inboard wall of cylinder block and moves up and down, and plays sealing function.This structure is had relatively high expectations to cylinder inner bore dimensional accuracy and fineness, the cost of production height.In addition, do not have device preventing tilting on the fore-set, be easy to generate inclination when cutting when fore-set is subjected to left and right unbalance loading, even topple over, have a strong impact on the safety in production of work plane owing to cut.
Summary of the invention
In order to address the above problem, the utility model provides a kind of plunger type to cut fore-set, adopts the plunger type column as the carrying pillar, cuts on the base of fore-set movable pumping rod is set, and prevents to tilt when column is subjected to offset loading force.
The utility model is achieved by the following technical solution: a kind of plunger type is cut fore-set, is made up of column, base, passing jack and cruciform joint; It is characterized in that: described column is the plunger type column; On the described base pumping rod is set.
Described pumping rod is an i-beam structure spare; Make square hole on the described base, the pumping rod sliding fit is inserted in the described square hole; Between base and the pumping rod pin is set; Described pin upper end is provided with cottor pin.
Described pumping rod can insert from a side of base, also can insert from the opposite side of base.
The bottom, outer end of described pumping rod is provided with leg.
Good effect of the present utility model is:
1, the requirement of cylinder body and piston rod dimensional accuracy and surface roughness is low, is convenient to processing, and low cost of manufacture is increased work efficiency.
2, increase anti-inclination pumping rod, improve the safety of cutting the fore-set supporting.
3, falling the post backstroke utilizes spring and falls post from gravity.
4, the plunger type column is the suspension type of force plunger operating principle when setting prop and support works, and the leakage of sealing place can find in time that security performance is guaranteed.
5, simple and reliable for structure, fault is few, easy to maintenance.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model structural representation.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is that the A of Fig. 2 is to partial view.
Among the figure: 1, base, 2, pumping rod, 2-1, leg, 3, pin, 3-1, cottor pin, 4, column, 5, backplate, 6, reversal valve, 7, liquid injection port, 8, woven hose, 9, control valve, 10, pass jack, 11, cruciform joint.
The specific embodiment
As shown in Figure 1 and Figure 2: a kind of plunger type is cut fore-set, is made up of column 4, base 1, passing jack 10 and cruciform joint 11; It is characterized in that: described column 4 is the plunger type column; Pumping rod (2) is set on the described base 1.Fall the post backstroke and utilize the mode of spring and deadweight, convenient and swift.
Described pumping rod 2 is an i-beam structure spare; Make square hole on the described base 1, pumping rod 2 sliding fits are inserted in the described square hole; Between base 1 and the pumping rod 2 pin 3 is set; Described pin 3 upper ends are provided with cottor pin 3-1.The effect of pin 3 is fixing positions of pumping rod 2, avoids sliding.Cottor pin 3-1 is fixing pin 3.
Described pumping rod 2 can insert from a side of base 1, also can insert from the opposite side of base 1.During use,, judge stressed direction and the incline direction of column, pumping rod 2 is installed in inclination one side of base 1, to prevent to cut the inclination of fore-set according to the gradient of bottom surface, tunnel and the gradient of back.On the pumping rod 2
The bottom, outer end of described pumping rod 2 is provided with leg 2-1.The effect of leg 2-1 is that pumping rod 2 outer ends are supporting-point, anti-inclination better effects if.
Claims (4)
1. a plunger type is cut fore-set, is made up of column (4), base (1), passing jack (10) and cruciform joint (11); It is characterized in that: described column (4) is the plunger type column; Pumping rod (2) is set on the described base (1).
2. plunger type according to claim 1 is cut fore-set, it is characterized in that: described pumping rod (2) is an i-beam structure spare; Described base (1) is gone up and is made square hole, and pumping rod (2) sliding fit is inserted in the described square hole; Between base (1) and the pumping rod (2) pin (3) is set; Described pin (3) upper end is provided with cottor pin (3-1).
3. plunger type according to claim 1 and 2 is cut fore-set, it is characterized in that: described pumping rod (2) can insert from a side of base (1), also can insert from the opposite side of base (1).
4. plunger type according to claim 1 and 2 is cut fore-set, it is characterized in that: the bottom, outer end of described pumping rod (2) is provided with leg (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020521470XU CN201747393U (en) | 2010-05-15 | 2010-08-30 | Plunger type topping column |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020196401.6 | 2010-05-15 | ||
| CN201020196401 | 2010-05-15 | ||
| CN201020521470XU CN201747393U (en) | 2010-05-15 | 2010-08-30 | Plunger type topping column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747393U true CN201747393U (en) | 2011-02-16 |
Family
ID=43582076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020521470XU Expired - Fee Related CN201747393U (en) | 2010-05-15 | 2010-08-30 | Plunger type topping column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824113A (en) * | 2012-09-14 | 2012-12-19 | 姬志刚 | Crossed connection shaft for connection rod with groove |
-
2010
- 2010-08-30 CN CN201020521470XU patent/CN201747393U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824113A (en) * | 2012-09-14 | 2012-12-19 | 姬志刚 | Crossed connection shaft for connection rod with groove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20110830 |