CN203807048U - Thrust jack used for hydraulic support of fully mechanized working face - Google Patents
Thrust jack used for hydraulic support of fully mechanized working face Download PDFInfo
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- CN203807048U CN203807048U CN201420264065.2U CN201420264065U CN203807048U CN 203807048 U CN203807048 U CN 203807048U CN 201420264065 U CN201420264065 U CN 201420264065U CN 203807048 U CN203807048 U CN 203807048U
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- piston
- hydraulic support
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- card key
- piston rod
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Abstract
The utility model provides a thrust jack used for a thrust jack used for a hydraulic support of a fully mechanized working face. The thrust jack comprises a cylinder, a piston rod and a piston. A clamp button, a support ring and a guide ring are sequentially arranged between the piston and the inner wall of the cylinder along the axial direction of the piston rod, a hoop is arranged on the outer side of the clamp button which is positioned and fixed through the hoop, the support ring is axially positioned through the clamp button, the guide ring is axially positioned through the support ring, the guide ring can be axially positioned and the piston can be radially and secondarily positioned; a radial positioning hole is arranged in the outer side face of the piston, a locking mat and a fastening screw are sequentially arranged in the radial positioning hole from inside to outside, and mounting of the piston rod of the piston is radially positioned and fixed through the fastening screw and the locking mat; a positioning groove is arranged in the outer circumferential face of the piston, a positioning protrusion matched with the positioning groove is arranged on the clamp button, and the clamp button can be axially positioned by cooperation of the positioning groove and the positioning protrusion.
Description
Technical field
The utility model relates to a kind of advancing jack, especially a kind of fully-mechanized mining working surface hydraulic support advancing jack.
Background technology
Along with the requirement of country to mine, downhole safety and service conditions, most of mine has adopted comprehensive mining hydraulic bracket, by hydraulic support, top board is carried out to supporting, to guarantee operating personnel's personal safety and carrying out smoothly of coal mining activity, the frame power that moves of hydraulic support is advancing jack.Advancing jack is a kind ofly with rigidity top, to lift part as equipment, and it comprises cylinder body, is provided with the piston rod that can slide along described cylinder body in cylinder body, and one end that piston rod is positioned at cylinder body is fixedly connected with piston.In operation process, the cylinder body end of advancing jack hangs on the base of hydraulic support, and piston rod is connected with push rod, by the coming and going of flexible drive push rod of piston rod, moves, and realizes the frame that moves of hydraulic support.
Wherein, the connection structure of piston and piston rod generally can be divided into integral type and build-up type.Integral type be piston and piston rod for being welded and fixed, easily there is the defects such as crack of weld and pore in welded structure, it is long-pending that this defect has reduced section of weld joint, reduced the load-carrying capacity of piston, and it is concentrated easily to produce stress, causes crackle, has reduced the Joint strenght of piston and piston rod; The general employing of build-up type is threaded, and in the situation that operation pressure is higher or load is large, diameter of piston rod is again less, the screw thread of piston rod may transship, and occurs fatigue damage, the existing weak point of prior art that Here it is.
Summary of the invention
The technical problems to be solved in the utility model, is exactly for the existing deficiency of prior art, and a kind of fully-mechanized mining working surface hydraulic support advancing jack is provided, and in this advancing jack, the Joint strenght of piston and piston rod is high, is not easy to occur fatigue damage.
This programme is achieved by the following technical measures: this fully-mechanized mining working surface hydraulic support comprises cylinder body, piston rod and piston with advancing jack, piston rod is connected with piston thread, the outside of described cylinder body is fixedly connected with the feed tube communicating with inner chamber of cylinder block, along piston rod between described piston and inboard wall of cylinder block, be axially disposed with card key, carrier ring and guide ring, the arranged outside of described card key has clip, on the lateral surface of described piston, be also provided with radial location hole, in radial location hole, be disposed with from inside to outside locking pad and holding screw; On the outer circumference surface of described piston, be provided with a detent, in described card key, be provided with the positioning convex coordinating with detent.
Above-mentioned card key is split-type structural, on the outer circumference surface of card key, is provided with mounting groove, and clip is placed in this mounting groove.
The arranged outside of above-mentioned carrier ring has the shaft shoulder coordinating with guide ring, and the arranged outside of piston has the staged shaft shoulder coordinating with guide ring.
Above-mentioned positioning convex is positioned at one end of card key, and radial location hole is corresponding with the other end of card key.
The arranged outside of above-mentioned cylinder body has the joint being fixedly connected with the two ends of feed tube.
On the bottom of above-mentioned cylinder body and corresponding joint, be respectively arranged with feed pathway I and the feed pathway II being interconnected, described feed pathway I is communicated with inner chamber of cylinder block, and feed pathway II is communicated with feed tube.
In above-mentioned cylinder body, one end relative with cylinder bottom is provided with the orienting sleeve coordinating with inboard wall of cylinder block.
Between above-mentioned orienting sleeve and piston rod, be provided with guide ring.
Between above-mentioned orienting sleeve and piston rod, be also provided with seal ring and dust ring.
The beneficial effect of this programme can be learnt according to the narration to such scheme, this fully-mechanized mining working surface hydraulic support is with in advancing jack, along piston rod between piston and inboard wall of cylinder block, be axially disposed with card key, carrier ring and guide ring, the arranged outside of described card key has clip, by clip, card key is positioned fixing, by card key, carrier ring is carried out to axial location, by carrier ring, guide ring is carried out to axial location, this structure has realized on the one hand carries out axial location to guide ring, simultaneously, under the effect of clip and card key, can also carry out auxiliary positioning radially to piston.In addition, on the lateral surface of piston, be also provided with radial location hole, in radial location hole, be disposed with from inside to outside locking pad and holding screw, by holding screw and locking pad to piston on piston rod be installed into conduct to location fix, to guarantee both Joint strenghts; On the outer circumference surface of described piston, be provided with a detent, in described card key, be provided with the positioning convex coordinating with detent, by coordinating of detent and positioning convex, realize the axial location of card key, prevent that card key from moving axially.In this advancing jack, be threaded connection, holding screw and locking pad and card key and three kinds of modes of clip, guarantee the Joint strenght of piston and piston rod, welding and the existing defect that is threaded merely in prior art have been avoided, make piston and piston rod be not easy to occur fatigue damage, as can be seen here, the utility model compared with prior art, have substantive distinguishing features and progress, the beneficial effect of its enforcement is also apparent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model specific embodiment.
Fig. 2 is the structural representation of piston in Fig. 1.
Fig. 3 is the structural representation of carrier ring in Fig. 1.
Fig. 4 is the structural representation of card key in Fig. 1.
In figure, the locking pad of 1-, 2-holding screw, 3-feed pathway I, 4-feed pathway II, 5-joint, 6-clip, 7-card key, 8-carrier ring, 9-guide ring, 10-cydariform circle, 11-piston, 12-feed tube, 13-piston rod, 14-joint, 15-cylinder body, 16-back-up ring, 17-guide ring, 18-seal ring, 19-orienting sleeve, 20-dust ring, 21-positioning convex, 22-mounting groove, 23-radial location hole, 24-detent, the 25-staged shaft shoulder, the 26-shaft shoulder.
The specific embodiment
For clearly demonstrating the technical characterstic of this programme, below by the specific embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
A kind of fully-mechanized mining working surface hydraulic support advancing jack, as shown in the figure, it comprises cylinder body 15, piston rod 13 and piston 11, piston 11 is connected with the end thread of piston rod 13, the outside of described cylinder body 15 is fixedly connected with the feed tube 12 communicating with cylinder body 15 inner chambers, and the arranged outside of cylinder body 15 has joint 5 and the joint 14 being fixedly connected with the two ends of feed tube 12.The bottom of cylinder body 15 (being the rodless cavity end in Fig. 1) and corresponding joint 5(are positioned at the joint 5 of cylinder body 15 bottoms) on be respectively arranged with feed pathway I 3 and the feed pathway II 4 being interconnected, described feed pathway I 3 is communicated with cylinder body 15 inner chambers, feed pathway II 4 is communicated with feed tube 12, and feed tube 12 is communicated with hydraulic power source.
Wherein, along piston rod 13 between piston 11 and cylinder body 15 inwalls, be axially disposed with card key 7, carrier ring 8 and guide ring 9, the arranged outside of described card key 7 has clip 6, card key 7 (comprises along piston 11 line of centerss and is symmetrically arranged with two parts for split-type structural, to facilitate installation), on the outer circumference surface of card key 7, be provided with mounting groove 22, clip 6 is placed in this mounting groove 22, by 6 pairs of card keys 7 of clip, positions fixing.The arranged outside of carrier ring 8 has the shaft shoulder 26 coordinating with guide ring 9, the arranged outside of piston 11 has the staged shaft shoulder 25 coordinating with guide ring 9, by 7 pairs of carrier rings of card key 8, carry out axial location, by 8 pairs of guide rings of carrier ring 9, carry out axial location, this structure has realized on the one hand carries out axial location to guide ring 9, meanwhile, under the effect of clip 6 and card key 7, the auxiliary positioning that can also carry out radially piston 11.
On the lateral surface of piston 11, be also provided with radial location hole 23, in radial location hole 23, be disposed with from inside to outside locking pad 1 and holding screw 2, by holding screw 2 and 1 pair of piston 11 of locking pad on piston rod 13 be installed into conduct to location fix, to guarantee both Joint strenghts.On the outer circumference surface of described piston 11, be provided with a detent 24, in described card key 7, be provided with the positioning convex 21 coordinating with detent 24, positioning convex 21 is positioned at one end of card key 7, radial location hole 23 is corresponding with the other end position of card key 7, by coordinating of detent 24 and positioning convex 21, realize the axial location of card key 7, prevent that card key 7 from moving axially.
In cylinder body 15, one end relative with cylinder bottom is provided with the orienting sleeve 19 coordinating with cylinder body 15 inwalls, between this orienting sleeve 19 and piston rod 13, be provided with guide ring 17, seal ring 18 and dust ring 20, orienting sleeve 19 and guide ring 17 can lead to piston rod 13, guarantee piston rod 13 traveling comforts; Seal ring 18 guarantees the sealing property of cylinder body 15, prevents hydraulic oil leakage; Dust ring 20 can prevent that dust from entering cylinder body 15 inside, affects the performance of jack.
In the utility model, without the technical characterictic of describing, can pass through existing techniques in realizing, not repeat them here.The foregoing is only preferred embodiment of the present utility model; the utility model is not limited in the above-mentioned specific embodiment; the variation that those of ordinary skills make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (9)
1. a fully-mechanized mining working surface hydraulic support advancing jack, it comprises cylinder body, piston rod and piston, piston rod is connected with piston thread, the outside of described cylinder body is fixedly connected with the feed tube communicating with inner chamber of cylinder block, it is characterized in that: along piston rod between described piston and inboard wall of cylinder block, be axially disposed with card key, carrier ring and guide ring, the arranged outside of described card key has clip, on the lateral surface of described piston, be also provided with radial location hole, in radial location hole, be disposed with from inside to outside locking pad and holding screw; On the outer circumference surface of described piston, be provided with a detent, in described card key, be provided with the positioning convex coordinating with detent.
2. fully-mechanized mining working surface hydraulic support advancing jack according to claim 1, is characterized in that: described card key is split-type structural, on the outer circumference surface of card key, is provided with mounting groove, and clip is placed in this mounting groove.
3. fully-mechanized mining working surface hydraulic support advancing jack according to claim 1 and 2, is characterized in that: the arranged outside of described carrier ring has the shaft shoulder coordinating with guide ring, and the arranged outside of piston has the staged shaft shoulder coordinating with guide ring.
4. fully-mechanized mining working surface hydraulic support advancing jack according to claim 3, is characterized in that: described positioning convex is positioned at one end of card key, and radial location hole is corresponding with the other end of card key.
5. fully-mechanized mining working surface hydraulic support advancing jack according to claim 3, is characterized in that: the arranged outside of described cylinder body has the joint being fixedly connected with the two ends of feed tube.
6. fully-mechanized mining working surface hydraulic support advancing jack according to claim 5, it is characterized in that: on the bottom of described cylinder body and corresponding joint, be respectively arranged with feed pathway I and the feed pathway II being interconnected, described feed pathway I is communicated with inner chamber of cylinder block, and feed pathway II is communicated with feed tube.
7. fully-mechanized mining working surface hydraulic support advancing jack according to claim 3, is characterized in that: in described cylinder body, one end relative with cylinder bottom is provided with the orienting sleeve coordinating with inboard wall of cylinder block.
8. fully-mechanized mining working surface hydraulic support advancing jack according to claim 7, is characterized in that: between described orienting sleeve and piston rod, be provided with guide ring.
9. fully-mechanized mining working surface hydraulic support advancing jack according to claim 8, is characterized in that: between described orienting sleeve and piston rod, be also provided with seal ring and dust ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264065.2U CN203807048U (en) | 2014-05-22 | 2014-05-22 | Thrust jack used for hydraulic support of fully mechanized working face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264065.2U CN203807048U (en) | 2014-05-22 | 2014-05-22 | Thrust jack used for hydraulic support of fully mechanized working face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203807048U true CN203807048U (en) | 2014-09-03 |
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ID=51445833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264065.2U Expired - Fee Related CN203807048U (en) | 2014-05-22 | 2014-05-22 | Thrust jack used for hydraulic support of fully mechanized working face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203807048U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405724A (en) * | 2014-12-05 | 2015-03-11 | 成都欧莱特自动化控制工程有限公司 | Double-telescopic upright post device for laying railway |
| CN104591026A (en) * | 2015-01-21 | 2015-05-06 | 巨隆液压设备(集团)有限公司 | Double-stroke and double-thrust hydraulic jack |
| CN106065780A (en) * | 2016-08-10 | 2016-11-02 | 缪保民 | A kind of hydraulic support column, jack and preparation method thereof |
| CN109339846A (en) * | 2018-11-07 | 2019-02-15 | 郑州煤矿机械集团股份有限公司 | Pusher structure suitable for full easy opened hydraulic support foundation |
-
2014
- 2014-05-22 CN CN201420264065.2U patent/CN203807048U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405724A (en) * | 2014-12-05 | 2015-03-11 | 成都欧莱特自动化控制工程有限公司 | Double-telescopic upright post device for laying railway |
| CN104591026A (en) * | 2015-01-21 | 2015-05-06 | 巨隆液压设备(集团)有限公司 | Double-stroke and double-thrust hydraulic jack |
| CN106065780A (en) * | 2016-08-10 | 2016-11-02 | 缪保民 | A kind of hydraulic support column, jack and preparation method thereof |
| CN109339846A (en) * | 2018-11-07 | 2019-02-15 | 郑州煤矿机械集团股份有限公司 | Pusher structure suitable for full easy opened hydraulic support foundation |
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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: 20140903 Termination date: 20170522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |