CN201679508U - Suspension type multi-telescopic hydraulic strut - Google Patents
Suspension type multi-telescopic hydraulic strut Download PDFInfo
- Publication number
- CN201679508U CN201679508U CN2010202014773U CN201020201477U CN201679508U CN 201679508 U CN201679508 U CN 201679508U CN 2010202014773 U CN2010202014773 U CN 2010202014773U CN 201020201477 U CN201020201477 U CN 201020201477U CN 201679508 U CN201679508 U CN 201679508U
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- cylinder
- inner casing
- post
- oil cylinder
- base
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Abstract
The utility model discloses a suspension type multi-telescopic hydraulic strut. An oil cylinder (8) is mounted in a base (11), the lower portion of a middle cylinder (6) is mounted in the oil cylinder (8), the lower portion of an inner cylinder (4) is mounted in the middle cylinder (6), a first cylinder sleeve (2) is mounted at an outlet of the upper end of the middle cylinder (6) outside the inner cylinder (4), the lower portion of a movable column (3) is mounted in the inner cylinder (4), a secondary cylinder sleeve (5) is mounted at an outlet of the upper end of the inner cylinder (4) outside the movable column (3), a top cover is mounted at the top end of the movable column (3), a resetting spring (10) is located in the movable column (3), two ends of the resetting spring (10) are respectively connected with the top cover (1) and the base (11), and a valve body (7) is mounted on the outside of the middle cylinder (6) and at an outlet of the upper end of the oil cylinder (8). The suspension type multi-telescopic hydraulic strut is long in work stroke, high in strength, fine in stability and high in bearing capacity, and has high practicality.
Description
Technical field
The utility model relates to the support protective device of a kind of colliery underground work, is specifically related to a kind of floated multi-expansion hydraulic prop.
Background technology
At present, the colliery mining face under mine uses floated hydraulic prop, and its structure is a single cylinder, range is 1.5 meters, because the restriction of the minimum constructive height of pillar own, when the work plane coal mining highly changes, need often switch pillar, time-consuming, use very inconvenient.
Summary of the invention
The purpose of this utility model is: a kind of floated multi-expansion hydraulic prop is provided, and the multi-expansion structure, impulse stroke is big, avoids switching pillar, saving of work and time.
Technical solution of the present utility model is: this pillar comprises oil cylinder, middle cylinder, inner casing, post alive, top cover, base, valve body and back-moving spring, oil cylinder is installed in the base, middle cylinder bottom is installed in the oil cylinder, the inner casing bottom is installed in the middle cylinder, be arranged in exit, cylinder upper end in the inner casing outside cylinder sleeve is installed, post alive bottom is installed in the inner casing, outside and No. two cylinder sleeves of inner casing upper end exit installation at the post of living, top cover is installed on top at the post of living, back-moving spring is positioned at post alive, the two ends of back-moving spring connect top cover and base respectively, outside and the oil cylinder upper end exit installation valve body at middle cylinder, establish the liquid in-out through hole on the base, variable seal chamber is installed on the liquid in-out through hole, establish the connection inner casing on the valve body, the liquid in-out through hole of middle cylinder.
Wherein, the handgrip body is installed on the outer wall of oil cylinder.
Liquid injects through valve body, liquid in-out through hole by middle cylinder, inner casing, the post of living rises post alive, when the limited step of the post of living contacts with a cylinder sleeve, the drive inner casing rises, when the limited step of inner casing contacts with No. two cylinder sleeves, cylinder rises in the drive, contacts with valve body up to the limited step of middle cylinder, finishes whole process of stretching; During decline, open the eduction valve of valve body, under the effect of back-moving spring, get back to initial position.
The utlity model has following advantage: the utility model is formed three telescoping mechanisms by oil cylinder, middle cylinder, inner casing, the post of living, as the quantity that increases oil cylinder can be formed the telescoping mechanism more than three, flexible stroke is big, the maximum functional stroke can reach more than 3 meters, when the work plane coal mining highly changes, do not need to switch pillar again, improved the work efficiency in man-hour, reduced cost of production; 2, stopped to move the roof accident of initiation, promoted safety in production because of switching the top board secondary that pillar causes.3, multi-expansion structure, good stability, the intensity height, supporting capacity is big.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Among the figure: 1 top cover, No. 2 cylinder sleeves, 3 posts of living, 4 inner casings, 5 No. two cylinder sleeves, cylinder in 6,7 valve bodies, 8 oil cylinders, 9 handgrip bodies, 10 back-moving springs, 11 bases.
The specific embodiment
As shown in Figure 1, this pillar comprises oil cylinder 8, middle cylinder 6, inner casing 4, post 3 alive, top cover 1, base 11, valve body 7 and back-moving spring 10, oil cylinder 8 is installed in the base 11, middle cylinder 6 bottoms are installed in the oil cylinder 8, inner casing 4 bottoms are installed in the middle cylinder 6, be arranged in exit, cylinder 6 upper end in inner casing 4 outsides a cylinder sleeve 2 is installed, post alive 3 bottoms are installed in the inner casing 4, at post 3 outside and No. two cylinder sleeves 5 of exit, inner casing 4 upper end installation of living, top cover 1 is installed on top at the post 3 of living, back-moving spring 10 is positioned at post 3 alive, the two ends of back-moving spring 10 connect top cover 1 and base 11 respectively, at middle cylinder 6 outside and exit, oil cylinder 8 upper end installation valve bodies 7, establish the liquid in-out through hole on the base 11, variable seal chamber is installed on the liquid in-out through hole, is established connection inner casing 4 on the valve body 7, the liquid in-out through hole of middle cylinder 6.
Wherein, handgrip body 9 is installed on the outer wall of oil cylinder 8.
Liquid injects through valve body 7, liquid in-out through hole by middle cylinder 6, inner casing 4, the post 3 of living rises post 3 alive, when the limited step of the post 3 of living contacts with a cylinder sleeve 2, driving inner casing 4 rises, when the limited step of inner casing 4 contacts with No. two cylinder sleeves 5, cylinder 6 rises in the drive, contacts with valve body 7 up to the limited step of middle cylinder 6, finishes whole process of stretching; During decline, open the eduction valve of valve body 7, under the effect of back-moving spring 10, get back to initial position.
Claims (2)
1. floated multi-expansion hydraulic prop, it is characterized in that: this pillar comprises oil cylinder (8), middle cylinder (6), inner casing (4), post (3) alive, top cover (1), base (11), valve body (7) and back-moving spring (10), oil cylinder (8) is installed in the base (11), middle cylinder (6) bottom is installed in the oil cylinder (8), inner casing (4) bottom is installed in the middle cylinder (6), be arranged in exit, cylinder (6) upper end in inner casing (4) outside a cylinder sleeve (2) is installed, post (3) alive bottom is installed in the inner casing (4), outside and inner casing (4) upper end exit installation No. two cylinder sleeves (5) at the post (3) of living, top cover (1) is installed on top at the post (3) of living, back-moving spring (10) is positioned at post alive (3), the two ends of back-moving spring (10) connect top cover (1) and base (11) respectively, outside and oil cylinder (8) the upper end exit installation valve body (7) at middle cylinder (6), base is established the liquid in-out through hole on (11), variable seal chamber is installed on the liquid in-out through hole, is established connection inner casing (4) on the valve body (7), the liquid in-out through hole of middle cylinder (6).
2. a kind of floated multi-expansion hydraulic prop according to claim 1 is characterized in that: wherein, handgrip body (9) is installed on the outer wall of oil cylinder (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202014773U CN201679508U (en) | 2010-05-21 | 2010-05-21 | Suspension type multi-telescopic hydraulic strut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202014773U CN201679508U (en) | 2010-05-21 | 2010-05-21 | Suspension type multi-telescopic hydraulic strut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201679508U true CN201679508U (en) | 2010-12-22 |
Family
ID=43344556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202014773U Expired - Fee Related CN201679508U (en) | 2010-05-21 | 2010-05-21 | Suspension type multi-telescopic hydraulic strut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201679508U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984219A (en) * | 2010-05-21 | 2011-03-09 | 金湖小青青机电设备有限公司 | Suspended multi-telescopic hydraulic column |
| CN103375527A (en) * | 2012-04-19 | 2013-10-30 | Zf腓特烈斯哈芬股份公司 | Piston-cylinder unit |
-
2010
- 2010-05-21 CN CN2010202014773U patent/CN201679508U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984219A (en) * | 2010-05-21 | 2011-03-09 | 金湖小青青机电设备有限公司 | Suspended multi-telescopic hydraulic column |
| CN103375527A (en) * | 2012-04-19 | 2013-10-30 | Zf腓特烈斯哈芬股份公司 | Piston-cylinder unit |
| CN103375527B (en) * | 2012-04-19 | 2016-12-28 | Zf腓特烈斯哈芬股份公司 | Piston cylinder devices |
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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: 20101222 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |