CN201588637U - Double-resetting spring type double-telescopic single hydraulic prop - Google Patents
Double-resetting spring type double-telescopic single hydraulic prop Download PDFInfo
- Publication number
- CN201588637U CN201588637U CN2009202822467U CN200920282246U CN201588637U CN 201588637 U CN201588637 U CN 201588637U CN 2009202822467 U CN2009202822467 U CN 2009202822467U CN 200920282246 U CN200920282246 U CN 200920282246U CN 201588637 U CN201588637 U CN 201588637U
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- cylinder
- double
- hinged
- single hydraulic
- middle cylinder
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Abstract
The utility model discloses a double-resetting spring type double-telescopic single hydraulic prop, which comprises a base, a cylinder body, an intermediate cylinder and a movable column casing. Cylinder caps are sleeved on the upper portion of the intermediate cylinder and the outer portion of the movable column casing, handle bodies are sleeved on the upper portion of the cylinder body and the outer portion of the intermediate cylinder, and a circular cover is arranged inside the top end of the movable column casing. The double-resetting spring type double-telescopic single hydraulic prop is characterized in that two resetting springs are arranged inside the movable column casing, a connecting plate is welded inside the intermediate cylinder on the lower portion of a movable column body, the lower end of one of the two resetting springs is hinged onto the base while the other end is hinged onto the intermediate cylinder through the connecting plate and a protecting tube outside the spring, the lower end of the other spring is hinged onto the connecting plate while the upper end is hinged onto the circular cover, and the diameter of the connecting plate is larger than inner diameter of the movable column casing. The double-resetting spring type double-telescopic single hydraulic prop has the advantages that the springs are not easy to deform when the prop is raised to the highest position, and prop descending speed is fast and the like.
Description
One, technical field
The utility model relates to a kind of monomer liquid compressing cylinder, relates in particular to the two extension single hydraulic props that contain the dual reset spring.
Two, background technology
Two extension single hydraulic props (hereinafter to be referred as two telescopic props) are one of important support apparatus on the stope under the coal mine.It belongs to a kind of hydraulic prop of fast constant-resistance type of outside fluid injection.Be applicable to the supporting that the roof timbering of stope working surface of coal mines and the advance support of termination etc. are located.Because characteristics such as its supporting capacity is strong, long service life for many years are widely used.Particularly the coal seam height plays the bigger work plane of drop, and this pillar enjoys favor.
But exist some such or such defectives during its structure design of two telescopic supportings of using at present in actual applications, make the use range of two telescopic props be restricted.Its defective is mainly as follows: because stroke ratio two telescopic props more greatly and before this of two telescopic props are with a back-moving spring, so back-moving spring is stretched to maximum value and is easy to produce plastic strain when pillar rises to range, and pillar when dropping to minimum stroke the prop drawing speed of pillar very slow.
Three, summary of the invention
The utility model provides a kind of dual reset spring two extension single hydraulic props to above weak point, not fragile spring when this hydraulic prop has setting prop to maximum height, and falling post speed is the advantage of common double telescopic prop speed twice.
For achieving the above object, the technical solution adopted in the utility model is:
The two extension single hydraulic props of a kind of dual reset spring comprise base, and cylinder body is installed on the base, and the internal sleeve of cylinder body is provided with middle cylinder, is arranged with plunger tube in the middle cylinder; The top of middle cylinder, the outer cover of plunger tube are provided with the cylinder cap; The top of cylinder body, the outer cover of middle cylinder are provided with the handgrip body; Inside, plunger tube top is provided with dome, be welded with a plate in the bottom middle cylinder of described cylinder alive, wherein the diameter of junction plate is greater than the internal diameter of plunger tube, junction plate is provided with a through hole, be provided with two back-moving springs in the plunger tube, wherein the lower end of first back-moving spring is hinged on the base, is hinged on the middle cylinder behind the through hole of the other end by junction plate, the lower end of second spring is hinged on the junction plate, and the upper end is hinged on the dome; The lead to the hole site place first back-moving spring outside weld on the junction plate is connected to a protection tube.
During setting prop, middle cylinder stretched out again after the plunger tube of pillar stretched out the whole strokes that arrive self, pushed up the top board of work plane until the top cover of pillar; When falling post because this pair extension single hydraulic prop has two back-moving springs, so plunger tube and middle cylinder shrink simultaneously, therefore the twice that post speed is other pairs telescopic prop falls.
Need omnidistance the stretching during because of the setting prop of first back-moving spring, range of stretch is big, and back-moving spring can be well protected in the setting of protection tube, can not produce the phenomenon of spring bending when especially falling post.
Four, description of drawings
Fig. 1 is a structural representation of the present utility model.
Five, the specific embodiment
The following correlation technique content of not addressing all can adopt or use for reference prior art.
As shown in Figure 1: a kind of pair of extension single hydraulic prop, the base 15 that comprises outer-enwraped type, the base of so-called outer-enwraped type is that base is spill, pass through to connect steel wire 11 fixed oil cylinder bodies 24 in the base, the internal sleeve of cylinder body 24 is provided with middle cylinder 25, be arranged with plunger tube 26 in the middle cylinder 25, cylinder body 24 tops, middle cylinder 25 outer cover are provided with handgrip body 28, and handgrip body 28 is arranged on the cylinder body 24 by connecting steel wire 11.
The inboard on handgrip body 28 tops is provided with two grooves, wherein upper groove is provided with dust ring 9, be provided with guide ring 10 in the low groove, the outside of the upper end plunger tube 26 of middle cylinder 25 is provided with cylinder cap 30, cylinder cap 30 is fixed on the middle cylinder 25 by connecting steel wire 29, plunger tube 26 upper end outer cover are provided with top cover 1, inside is arranged with dome 4 by back-up ring 3 and O shape circle 2, and top cover 1 is fixed on the plunger tube 26 by connecting steel wire 5;
The inboard on cylinder cap 30 tops is provided with two grooves, and wherein upper groove is provided with dust ring 6, is provided with guide ring 7 in the low groove; The outside, lower end of middle cylinder 25 is provided with two grooves, wherein is provided with guide ring 20 in the upper groove, is provided with back-up ring 19 and y-shaped ring 18 in the low groove; The outside, lower end of plunger tube is provided with two grooves, wherein is provided with guide ring 23 in the upper groove, is provided with back-up ring 22 and y-shaped ring 21 in the low groove.The inboard of base 15 is provided with annular groove, is provided with O shape circle 16 and back-up ring 17 in the groove.
Be welded with a plate 31 in the bottom middle cylinder 25 of described plunger tube 26, wherein the diameter of junction plate 31 is greater than the internal diameter of plunger tube 26, and junction plate 31 is provided with a through hole.
Be provided with two back-moving springs in the plunger tube 26, wherein the lower end of first back-moving spring 27 is hinged on the base 15, the other end is hinged on the middle cylinder 25 by the through hole of junction plate 31, and the lower end of second back-moving spring 8 is hinged on the junction plate 31, and the upper end is hinged on the dome 4.Lead to the hole site place first back-moving spring, 27 outside welds on the junction plate 31 are connected to a protection tube 32.
The handle below of described handgrip body 28 is provided with triple-use valve seat 33, and the outlet of triple-use valve seat 33 is connected oil pipe 14 through back-up ring 13 with O shape circle 12, and the through hole of oil pipe 14 on base 15 is communicated with plunger shaft.
Middle cylinder stretched out again after pillar stretched out the whole strokes that arrive self by plunger tube earlier, pushed up the top board of work plane until the top cover of pillar.When falling post because this pair extension single hydraulic prop has two back-moving springs, so plunger tube and middle cylinder shrink simultaneously, therefore the twice that post speed is other pairs telescopic prop falls.
Claims (2)
1. the two extension single hydraulic props of dual reset spring comprise base, and cylinder body is installed on the base, and the internal sleeve of cylinder body is provided with middle cylinder, is arranged with plunger tube in the middle cylinder; The top of middle cylinder, the outer cover of plunger tube are provided with the cylinder cap; The top of cylinder body, the outer cover of middle cylinder are provided with the handgrip body; Inside, plunger tube top is provided with dome, it is characterized in that: be provided with two back-moving springs in the described plunger tube, be welded with a plate in the bottom middle cylinder of the cylinder of living; Article two, the lower end of first back-moving spring is hinged on the base in the back-moving spring, and the other end is hinged on the middle cylinder by junction plate and the outer protection tube of spring; The lower end of second back-moving spring is hinged on the junction plate, and the upper end is hinged on the dome; The diameter of described junction plate is greater than the internal diameter of plunger tube.
2. the two extension single hydraulic props of dual reset spring according to claim 1; it is characterized in that: junction plate is provided with a through hole; first resets plays the lower end and is hinged on the base; the other end is hinged on the middle cylinder after by the junction plate through hole, and the lead to the hole site place first back-moving spring outside weld on the junction plate is connected to a protection tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202822467U CN201588637U (en) | 2009-11-27 | 2009-11-27 | Double-resetting spring type double-telescopic single hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202822467U CN201588637U (en) | 2009-11-27 | 2009-11-27 | Double-resetting spring type double-telescopic single hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588637U true CN201588637U (en) | 2010-09-22 |
Family
ID=42748416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202822467U Expired - Fee Related CN201588637U (en) | 2009-11-27 | 2009-11-27 | Double-resetting spring type double-telescopic single hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089283A (en) * | 2013-02-26 | 2013-05-08 | 金湖小青青机电设备有限公司 | Double-telescopic single hydraulic prop |
-
2009
- 2009-11-27 CN CN2009202822467U patent/CN201588637U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089283A (en) * | 2013-02-26 | 2013-05-08 | 金湖小青青机电设备有限公司 | Double-telescopic single hydraulic prop |
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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: SHANDONG XINMEI MACHINERY EQUIPMENT CO., LTD. Free format text: FORMER NAME: SHANDONG NEW COAL-MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 271219 Shandong city of Xintai province Shandong new Sun Village West of Xinwen coal machinery equipment Limited by Share Ltd Patentee after: Shandong Xinmei Machinery Equipment Co., Ltd. Address before: 271219 Shandong city of Xintai province Shandong new West Xinwen Suncun Coal Machinery Co Ltd Patentee before: Shandong Xinmei Machinery Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20151127 |