CN105621305A - Piston and jack using piston - Google Patents
Piston and jack using piston Download PDFInfo
- Publication number
- CN105621305A CN105621305A CN201610120130.8A CN201610120130A CN105621305A CN 105621305 A CN105621305 A CN 105621305A CN 201610120130 A CN201610120130 A CN 201610120130A CN 105621305 A CN105621305 A CN 105621305A
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder
- annular groove
- hole
- screw block
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/26—Adaptations or arrangements of pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
Abstract
The invention relates to a piston and a jack using the piston. The jack comprises a hydraulic cylinder, wherein the hydraulic cylinder comprises a piston and a cylinder body of which the axial line extends in the front-back direction; the piston comprises a piston body of which the peripheral surface is in guide sliding sealing fit with the inner wall of the hydraulic cylinder and the axial line extends in the front-back direction; a lightening hole of which the axial line extends in the front-back direction is formed in the piston body; and the lightening hole and the peripheral surface of the piston body are arranged in a spaced manner. The weight of the piston is reduced greatly without reducing a sealing area of the peripheral surface of the piston body and the inner wall of the cylinder body, namely without compromising the sealability of the piston and the cylinder body; then the weight of the jack using the piston is reduced; the jack is convenient to carry, can be used more flexibly and lightly; and the production efficiency is improved greatly.
Description
Technical field
The present invention relates to a kind of piston and use the screw block of this piston.
Background technology
The chain spanner screw block used in the fields such as colliery engineering at present is usually all heavier, this is not mainly because the oil pressure used in chain spanner screw block generally all includes too high, but the pulling force required is relatively large, and the requirement formed is also bigger, this just makes can be very heavy by the chain spanner screw block weight of common mining jack structure design, common mining screw block comprises hydro-cylinder, hydro-cylinder comprises cylinder body and is arranged at piston and the piston rod of cylinder interior, and piston and piston rod are metallic substance, in order to ensure to there is bigger shoulder seal area so that having good sealing property therebetween between the outside surface of piston and the inwall of cylinder body, often volume ratio is bigger for piston, make the weight of screw block bigger, crane can be used when ore deposit uses, the equipment such as overhead traveling crane and traction mechanism are assisted, this just occupies more work resource virtually, also reduce production efficiency simultaneously.
Summary of the invention
It is an object of the invention to provide a kind of lighter in weight, use light screw block; Meanwhile, the present invention also aims to the piston providing this screw block a kind of to use.
In the present invention, the technical scheme of a kind of piston is: a kind of piston, comprise periphery and hydro-cylinder inwall to lead the piston body that the axis that slipper seal coordinates extends along the longitudinal direction, what be provided with on described piston body that axis extends along the longitudinal direction subtracts repeated hole, and the periphery interval subtracting repeated hole and piston body is arranged.
The described repeated hole that subtracts is the bowl shaped structure being coaxially set with piston body.
Described piston body is provided with for passing for piston rod and the piston lever attachment hole being sealed and matched with piston rod and being connected.
In the present invention, the technical scheme of a kind of screw block is: a kind of screw block, comprise hydro-cylinder, hydro-cylinder comprises cylinder body and the piston that axis extends along the longitudinal direction, described piston comprises periphery and hydro-cylinder inwall and leads the piston body that the axis that slipper seal coordinates extends along the longitudinal direction, it is characterized in that: what be provided with on described piston body that axis extends along the longitudinal direction subtracts repeated hole, and the periphery interval subtracting repeated hole and piston body is arranged.
The described repeated hole that subtracts is the bowl shaped structure being coaxially set with piston body.
Described piston body is provided with for passing for piston rod and the piston lever attachment hole being sealed and matched with piston rod and being connected.
Described piston rod passes piston lever attachment hole and protrudes the front end of piston body.
Described hydro-cylinder also comprises the orienting sleeve that the back-end sealing with cylinder body is connected, orienting sleeve has for the guiding hole that guiding movement before and after piston rod installs, piston rod is slidably matched with the sealing of guiding hole, orienting sleeve is provided with that axis extends along the longitudinal direction and subtracts heavy annular groove with guiding hole is spaced.
Described subtract heavy annular groove comprise be arranged at orienting sleeve before on end face before subtract heavy annular groove, the front inside groove formed that subtracts between heavy annular groove and guiding hole is along at the rear front subtracting between heavy annular groove and orienting sleeve periphery the outer groove edge formed.
Described subtract heavy annular groove also comprise be arranged on orienting sleeve aft end face after subtract heavy annular groove.
The useful effect of the present invention is: what be provided with on piston body that axis extends along the longitudinal direction subtracts repeated hole, the outside surface interval subtracting repeated hole and piston body is arranged, when not reducing the inner wall sealing area of the periphery of piston body and cylinder body namely when not reducing the sealing property of piston and cylinder body, substantially reduce the weight of piston, and then reduce the weight of the screw block using this piston, it is convenient to carry, equipment should be used to be seen light more flexibly, substantially increases the efficiency of production.
Further, bowl shaped structure subtract the weight that repeated hole can reduce piston to a greater extent.
Further, piston rod passes piston lever attachment hole and protrudes the front end of piston body, and in piston forward moving process, piston rod contacts with the front end end cover of hydro-cylinder, and the front end end cover that can not cause piston and hydro-cylinder collides, extend the work-ing life of piston.
Further, orienting sleeve being provided with and subtracts heavy annular groove, piston rod coordinates with the guiding hole slipper seal of orienting sleeve, the interior hole making guarantee piston rod and orienting sleeve be sealed and matched face constant when, what subtract heavy annular groove arranges the further weight reducing screw block.
Further, before subtract the existence of heavy annular groove and the front inside groove subtracting heavy annular groove along the rear being positioned at outer groove edge, before subtract in heavy annular groove and can store a certain amount of hydraulic efficiency oil, in piston backward moving process, the effect of buffering can be played, reduce between piston and orienting sleeve the infringement colliding and being caused by piston.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of a kind of screw block of the present invention.
Embodiment
A kind of screw block, as shown in Figure 1, comprise hydro-cylinder and the hydraulic efficiency plant of power is provided to hydro-cylinder, hydro-cylinder comprises the cylinder body 1 that axis extends along the longitudinal direction and the piston 2 and the piston rod 3 that are arranged at cylinder body 1 inside, the periphery of cylinder body 1 is provided with front oil-in 7 and rear oil-in 8 in the both sides, front and back of piston 2, piston 2 comprises periphery and hydro-cylinder inwall and leads the piston body that the axis that slipper seal coordinates extends along the longitudinal direction, piston body is hollow type structure, the interior hole of piston body is bowl shaped structure, the interior hole formation of the bowl shaped structure of piston body subtracts repeated hole 13, the periphery interval subtracting repeated hole 13 and piston body is arranged, the rear end of piston body is provided with the piston lever attachment hole passed and be tightly connected for piston rod 3, piston rod 3 comprise the piston rod being positioned at piston 2 front portion before section 3-1 and section 3-2 after being positioned at the piston rod at piston 2 rear portion, before piston rod, the length of section 3-1 is greater than piston 2 thickness in the longitudinal direction and piston rod 3 protrudes the front end of piston body, when the front end of the front section 3-1 of piston rod coordinates with the front end end cover block of cylinder body 1, the front end of piston body is positioned at the rear side of front oil-in 7. being provided with guide path 18 and sealing groove 19 on the periphery of piston body and between cylinder body 1, be provided with guiding ring and slide for piston and inboard wall of cylinder block guiding in guide path 18, guiding ring is that wear-resisting material is made, and is provided with sealing-ring in sealing groove 19. bowl shaped structure subtract repeated hole 13 opening forward, first, in the structure of piston, sealing groove 19 to be positioned at the rear end of guide path 18, the groove depth of sealing groove 19 is darker, if and piston subtract repeated hole 13 opening backwards, in order to ensure that sealing groove 19 has enough thickness to support, the wall thickness of piston more certainly will namely reduce the volume of cavity, adding the weight of piston, secondly, the pressure of rodless cavity will much larger than the pressure in rod chamber, opening is conducive to being uniformly distributed of the pressure in rodless cavity forward, is conducive to reducing the elasticity distortion of piston.
Cylinder body 1 have opening backwards for for the cavity 14 of piston from rear to front loading, subtract repeated hole 13 and and form rodless cavity with the front end end cover of cylinder body 1 forward, the open rearward end place of cylinder body 1 is sealedly connected with orienting sleeve 9, orienting sleeve 9 has for the guiding hole led and install before and after piston rod 3, the aft end face of piston 2 and orienting sleeve 9 and cylinder body 1 form rod chamber, the guiding hole of orienting sleeve 9 coordinates with piston rod 3 slipper seal, the front end face of orienting sleeve 9 and aft end face are provided with subtract before axis extends along the longitudinal direction heavy annular groove 15 and after subtract heavy annular groove 4, the setting subtracting heavy annular groove further reduces the weight of screw block, before subtract between heavy annular groove 15 and guiding hole the inside groove formed and front subtracting between heavy annular groove 15 and orienting sleeve periphery the rear of the outer groove formed along 17 along 16. the front end of cylinder body 1 is installed with the front connecting joint 5 for being fixedly connected with outer bilge construction, and the rear end of piston rod 3 has been threaded rear connecting joint 6, and rear connecting joint 6 is connected with object to be connected in use. cylinder body 1 periphery is provided with hand 10,10, by connecting, structure is rotatably assemblied on cylinder body 1 along cylinder body 1 circumference hand, connect structure comprise before and after corresponding be arranged on the periphery of cylinder body 1 front installation platform 11 and rear installation platform 12, forward and backward installation platform correspondence offer for hand 10 the open holes that loads of end.
The use procedure of the screw block of the present invention is: when needs piston rod 3 stretches out backward, hydraulic efficiency oil the past oil-in 7 in hydraulic efficiency plant enters the rodless cavity of the cylinder body 1 of screw block, piston 2 under the effect of hydraulic efficiency oil together with piston rod 3 rearward movement, piston rod 3 is released, when the front end contact of the aft end face of piston 2 and orienting sleeve 9, screw block reaches maximum travel position place. When piston rod 3 is regained, hydraulic efficiency oil enters rod chamber from rear oil-in 8, drives piston rod 3 to move forward together under the effect of the hydraulic efficiency oil of piston 2 in rod chamber, and the hydraulic efficiency oil in rodless cavity flows back in hydraulic efficiency plant, thus reaches the object that piston rod 3 is retracted.
In other embodiments of the invention, the subtracting repeated hole and can also arrange backwards of piston rod; Subtract repeated hole and may not be bowl shaped structure, it is possible to be column construction; Subtracting heavy annular groove on orienting sleeve may not be annular groove, it is possible to is multiple subtract repeated hole; Orienting sleeve can subtract before only arranging heavy annular groove or after subtract heavy annular groove; Front oil-in can also be arranged on the front end end cover of cylinder body; Rear oil-in can also be arranged on orienting sleeve; Can not arranging piston lever attachment hole on piston body, the front end of piston rod can be directly welded on the aft end face of piston body; Before subtract heavy annular groove inside groove along can also with outer groove along concordant.
The embodiment of a kind of piston is identical with the embodiment of the piston in each embodiment of above-mentioned a kind of screw block, repeats no more herein.
Claims (10)
1. a piston, comprise periphery and hydro-cylinder inwall to lead the piston body that the axis that slipper seal coordinates extends along the longitudinal direction, it is characterized in that: what be provided with on described piston body that axis extends along the longitudinal direction subtracts repeated hole, and the periphery interval subtracting repeated hole and piston body is arranged.
2. a kind of piston according to claim 1, it is characterised in that: described in subtract repeated hole be the bowl shaped structure being coaxially set with piston body.
3. a kind of piston according to claim 1, it is characterised in that: described piston body is provided with for passing for piston rod and the piston lever attachment hole being sealed and matched with piston rod and being connected.
4. a screw block, comprise hydro-cylinder, hydro-cylinder comprises cylinder body and the piston that axis extends along the longitudinal direction, described piston comprises periphery and hydro-cylinder inwall and leads the piston body that the axis that slipper seal coordinates extends along the longitudinal direction, it is characterized in that: what be provided with on described piston body that axis extends along the longitudinal direction subtracts repeated hole, and the periphery interval subtracting repeated hole and piston body is arranged.
5. a kind of screw block according to claim 4, it is characterised in that: described in subtract repeated hole be the bowl shaped structure being coaxially set with piston body.
6. a kind of screw block according to claim 4, it is characterised in that: described piston body is provided with for passing for piston rod and the piston lever attachment hole being sealed and matched with piston rod and being connected.
7. a kind of screw block according to claim 6, it is characterised in that: described piston rod passes piston lever attachment hole and protrudes the front end of piston body.
8. a kind of screw block according to the arbitrary item of claim 4-7, it is characterized in that: described hydro-cylinder also comprises the orienting sleeve that the back-end sealing with cylinder body is connected, orienting sleeve has for the guiding hole that guiding movement before and after piston rod installs, piston rod is slidably matched with the sealing of guiding hole, orienting sleeve is provided with that axis extends along the longitudinal direction and subtracts heavy annular groove with guiding hole is spaced.
9. a kind of screw block according to claim 8, it is characterized in that: described in subtract heavy annular groove comprise be arranged at orienting sleeve before on end face before subtract heavy annular groove, the front inside groove formed that subtracts between heavy annular groove and guiding hole is along at the rear front subtracting between heavy annular groove and orienting sleeve periphery the outer groove edge formed.
10. a kind of screw block according to claim 8, it is characterised in that: described in subtract heavy annular groove also comprise be arranged on orienting sleeve aft end face after subtract heavy annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610120130.8A CN105621305B (en) | 2016-03-03 | 2016-03-03 | A kind of piston and the jack using the piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610120130.8A CN105621305B (en) | 2016-03-03 | 2016-03-03 | A kind of piston and the jack using the piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105621305A true CN105621305A (en) | 2016-06-01 |
| CN105621305B CN105621305B (en) | 2018-09-28 |
Family
ID=56036716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610120130.8A Expired - Fee Related CN105621305B (en) | 2016-03-03 | 2016-03-03 | A kind of piston and the jack using the piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105621305B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0290320A1 (en) * | 1987-05-06 | 1988-11-09 | Claude Alain Gratzmuller | Hydraulic actuator with a piston position control system |
| CN2319390Y (en) * | 1997-12-31 | 1999-05-19 | 南京理工大学 | Light weight hollow extension jack |
| CN2548989Y (en) * | 2002-08-02 | 2003-05-07 | 柳州市建筑机械总厂 | Concave jack |
| CN1488041A (en) * | 2000-12-22 | 2004-04-07 | ¸ | Device with at least one extension arm or support arm for multi-linked crane shaped extension arms, concrete spreader columns and similar |
| CN200967723Y (en) * | 2006-11-07 | 2007-10-31 | 浙江衢州煤矿机械总厂有限公司 | Hydraulic support jack |
| CN101941657A (en) * | 2010-09-20 | 2011-01-12 | 中煤邯郸煤矿机械有限责任公司 | Integral seal jack |
| CN201746277U (en) * | 2010-05-09 | 2011-02-16 | 陈玉金 | Hydraulic jack with manual gear pump |
| CN202704930U (en) * | 2012-07-24 | 2013-01-30 | 山东矿机集团股份有限公司 | High-thrust jack |
| CN205397982U (en) * | 2016-03-03 | 2016-07-27 | 郑州四维矿业机械有限责任公司 | Piston and use jack of this piston |
-
2016
- 2016-03-03 CN CN201610120130.8A patent/CN105621305B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0290320A1 (en) * | 1987-05-06 | 1988-11-09 | Claude Alain Gratzmuller | Hydraulic actuator with a piston position control system |
| CN2319390Y (en) * | 1997-12-31 | 1999-05-19 | 南京理工大学 | Light weight hollow extension jack |
| CN1488041A (en) * | 2000-12-22 | 2004-04-07 | ¸ | Device with at least one extension arm or support arm for multi-linked crane shaped extension arms, concrete spreader columns and similar |
| CN2548989Y (en) * | 2002-08-02 | 2003-05-07 | 柳州市建筑机械总厂 | Concave jack |
| CN200967723Y (en) * | 2006-11-07 | 2007-10-31 | 浙江衢州煤矿机械总厂有限公司 | Hydraulic support jack |
| CN201746277U (en) * | 2010-05-09 | 2011-02-16 | 陈玉金 | Hydraulic jack with manual gear pump |
| CN101941657A (en) * | 2010-09-20 | 2011-01-12 | 中煤邯郸煤矿机械有限责任公司 | Integral seal jack |
| CN202704930U (en) * | 2012-07-24 | 2013-01-30 | 山东矿机集团股份有限公司 | High-thrust jack |
| CN205397982U (en) * | 2016-03-03 | 2016-07-27 | 郑州四维矿业机械有限责任公司 | Piston and use jack of this piston |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105621305B (en) | 2018-09-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 |