CN102536949A - Thrust cylinder for anti-impact heading machine - Google Patents
Thrust cylinder for anti-impact heading machine Download PDFInfo
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- CN102536949A CN102536949A CN2012100531035A CN201210053103A CN102536949A CN 102536949 A CN102536949 A CN 102536949A CN 2012100531035 A CN2012100531035 A CN 2012100531035A CN 201210053103 A CN201210053103 A CN 201210053103A CN 102536949 A CN102536949 A CN 102536949A
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Abstract
The invention relates to a thrust cylinder for an anti-impact heading machine. The thrust cylinder comprises a cylinder body, a piston rod, a piston and a cylinder cover, wherein the extension end of the piston rod is provided with a rod end earring; and the end part of the piston rod extending into the cylinder body is provided with a tail boss extended from the outer end face of the piston. According to the invention, the piston rod is provided with the tail boss beyond the bottom surface of the piston; when the piston is fully retracted, the piston can no longer impact the bottom of the cylinder, and a torque force of the rod end earring conducted by the piston rod is converted into impact and extrusion between the tail end of the piston rod and the bottom of the cylinder, so that fastening of the piston is not directly influenced; when the piston fully extends out, a limiting separation sleeve arranged in the cylinder disperses the impact and extrusion between the piston and the cylinder cover, so that the influence on fastening of the piston is reduced; in addition, a piston anti-rotation key arranged between the piston and the piston rod also prevents rotation of the piston, so that an extra shearing force cannot be applied to a piston fastening bolt; and under various severe impact load using conditions, the reliability is improved, and the service life of the cylinder is favorably prolonged.
Description
Technical field
The present invention relates to technical field of hydraulic oil cylinder, especially a kind of shock resistance development machine advances oil cylinder.
Background technique
Development machine is the machine that is used to dig straight underground passage; Mainly form by traveller, operation mechanism, shipment activity and reprinting mechanism; Have a critical component in the operation mechanism, promptly advance oil cylinder, advance oil cylinder often to occur in and use a period of time back piston loosening; Piston comes off when serious, the problem that oil cylinder thoroughly damages.Its reason is that development machine advances the vibration of oil cylinder and impacts very greatly when rock cutting, when design, requires the necessary integral structure of rod end earrings and piston rod, has solved the problem that comes off of rod end earrings and piston rod like this; But; When piston ran to the two ends of cylinder block, the bump of piston and cylinder cap, piston and cylinder bottom and extruding were inevitable, and the rod end earrings will make piston produce huge rotating force because of the axial torsion of external force conduction; Piston and cylinder bottom compressed and can not freely rotate this moment; Be accompanied by powerful impact, the pin bolt of the fastening piston of traditional approach can be cut off crowded broken, causes piston work relax, comes off; Reduced the reliability of oil cylinder, made reduce working life.
Fig. 1 Fig. 2 is that the development machine of existing technology advances oil cylinder; Comprise cylinder body 1, piston rod 2, piston 3 and cylinder cap 4; The external part place of piston rod 2 has rod end earrings 21, and piston rod 2 has outside thread, and piston 3 has internal thread; Screw-thread fit is connected between piston rod 2 and the piston 3, and piston rod 2 also has with piston 3 and is used for fastening pin bolt.Adopt this development machine to advance oil cylinder; When piston 3 ran to the two ends of cylinder body 1, piston 3 was inevitable with the bump and the extruding of cylinder cap 4, piston 3 and cylinder bottom 11, and rod end earrings 21 will make piston 3 produce huge rotating force because of the axial torsion of external force conduction; Piston 3 compressed and can not freely rotate with cylinder bottom 11 this moment; Be accompanied by powerful impact, the pin bolt of the fastening piston 3 of this mechanism can be cut off crowded broken, causes piston work relax, comes off; Reduced the reliability of oil cylinder, made reduce working life.
Summary of the invention
The technical problem that the present invention will solve is: in order to solve the deficiency of existing technology, the present invention provides a kind of shock resistance development machine to advance oil cylinder, when piston is withdrawn fully; Piston can not clash into cylinder bottom again; Effectively reduce bump and extruding, improve the reliability of piston, increase the service life cylinder bottom.
The technical solution adopted for the present invention to solve the technical problems is: a kind of shock resistance development machine advances oil cylinder; Comprise cylinder body, piston rod, piston and cylinder cap; Piston rod has the rod end earrings; The end that described piston rod stretches into cylinder body has the afterbody boss that exceeds the piston exterior edge face, when avoiding piston to regain fully and the bump and the extruding of cylinder bottom.
Reduce bump and extruding between piston and cylinder cap when piston is stretched out fully, be provided with spacing spacer near the inboard place of piston on the described piston rod.Spacing spacer has effectively disperseed the bump and the extruding of piston and cylinder cap.
Be provided with the piston anti-rotating key between described piston rod and the piston.The piston anti-rotating key has also stoped piston rotation, increases extra shearing force can for the piston clamping bolt.
The end face of described piston rod has tapped hole; Has the back-up ring that cooperates with the piston rod end face in the piston inner ring; Have the tapped hole that is complementary with the piston rod upper screwed hole on the back-up ring, be fixedly connected through clamping bolt between piston rod and the piston, the afterbody boss of piston rod end stretches out from back-up ring.Use clamping bolt instead between piston rod and the piston and be fixedly connected, dismounting is more convenient, is convenient to maintenance.
The invention has the beneficial effects as follows that shock resistance development machine of the present invention advances oil cylinder, on piston rod, is provided with the afterbody boss; Exceed the piston bottom surface, when piston was withdrawn fully, piston can not clash into cylinder bottom again; The torsion that the rod end earrings conducts through piston rod is converted into the bump and the extruding of piston rod tail end and cylinder bottom, to the fastening not directly influence of piston, when piston rod stretches out fully; The spacing spacer that increases in the oil cylinder has disperseed the bump and the extruding of piston and cylinder cap, and the piston anti-rotating key has also stoped piston rotation, increases extra shearing force can for the piston clamping bolt; Improve reliability, help prolonging the working life of oil cylinder.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the prior art constructions schematic representation;
Fig. 2 is the partial sectional view at A place among Fig. 1;
Fig. 3 is the structural representation that shock resistance development machine of the present invention advances the most preferred embodiment of oil cylinder;
Fig. 4 is the partial sectional view at B place among Fig. 3.
Among the figure: 1. cylinder body, 11. cylinder bottoms, 2. piston rod, 21. rod end earrings, 22. afterbody boss, 3. piston, 31. back-up rings, 4. cylinder cap, 5. spacing spacer, 6. piston anti-rotating key, 7. clamping bolt.
Embodiment
Combine accompanying drawing that the present invention is done further detailed explanation now.These accompanying drawings are the schematic representation of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Fig. 3 Fig. 4 is that shock resistance development machine of the present invention advances oil cylinder, comprises cylinder body 1, piston rod 2, piston 3 and cylinder cap 4, and the external part place of piston rod 2 has rod end earrings 21, and the end that piston rod 2 stretches into cylinder body 1 has the afterbody boss 22 that exceeds piston 3 exterior edge faces.Be provided with spacing spacer 5 near piston 3 inboard places on the piston rod 2.Be provided with piston anti-rotating key 6 between piston rod 2 and the piston 3.
The end face of piston rod 2 has tapped hole; Has the back-up ring 31 that cooperates with piston rod 2 end faces in piston 3 inner rings; Have the tapped hole that is complementary with piston rod 2 upper screwed holes on the back-up ring 31; Be fixedly connected through clamping bolt 7 between piston rod 2 and the piston 3, the afterbody boss 22 of piston rod 2 ends stretches out from back-up ring 31.
Introduce the present invention below in conjunction with concrete the use; When piston rod 2 and piston 3 are withdrawn fully; Can not clash into cylinder bottom 11 again at afterbody boss 22 effect lower pistons 3; The torsion that rod end earrings 21 conducts through piston rod 2 is converted into the bump and the extruding of piston rod 2 tail ends and cylinder bottom 11, to the fastening not directly influence of piston 3; When piston rod 2 and piston 3 stretched out fully, the spacing spacer 5 that increases in the oil cylinder had disperseed bump and the extruding of piston 3 with cylinder cap 4, and piston anti-rotating key 6 has also stoped piston 3 to rotate, and increased extra shearing force can for clamping bolt 7.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must confirm its technical scope according to the claim scope.
Claims (4)
1. a shock resistance development machine advances oil cylinder; Comprise cylinder body (1), piston rod (2), piston (3) and cylinder cap (4); Piston rod (2) has rod end earrings (21), it is characterized in that: the end that described piston rod (2) stretches into cylinder body (1) has the afterbody boss (22) that exceeds piston (3) exterior edge face.
2. shock resistance development machine as claimed in claim 1 advances oil cylinder, it is characterized in that: described piston rod (2) is gone up near the inboard place of piston (2) and is provided with spacing spacer (5).
3. shock resistance development machine as claimed in claim 1 advances oil cylinder, it is characterized in that: be provided with piston anti-rotating key (6) between described piston rod (2) and the piston (3).
4. shock resistance development machine as claimed in claim 1 advances oil cylinder; It is characterized in that: the end face of described piston rod (2) has tapped hole; Has the back-up ring (31) that cooperates with piston rod (2) end face in piston (3) inner ring; Have the tapped hole that is complementary with piston rod (2) upper screwed hole on the back-up ring (31), be fixedly connected through clamping bolt (7) between piston rod (2) and the piston (3), the afterbody boss (22) of piston rod (2) end stretches out from back-up ring (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210053103.5A CN102536949B (en) | 2012-03-02 | 2012-03-02 | Thrust cylinder for anti-impact heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210053103.5A CN102536949B (en) | 2012-03-02 | 2012-03-02 | Thrust cylinder for anti-impact heading machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102536949A true CN102536949A (en) | 2012-07-04 |
| CN102536949B CN102536949B (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210053103.5A Active CN102536949B (en) | 2012-03-02 | 2012-03-02 | Thrust cylinder for anti-impact heading machine |
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| Country | Link |
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| CN (1) | CN102536949B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829024A (en) * | 2012-09-04 | 2012-12-19 | 无锡市长江液压缸厂 | Mounting structure for piston rod and rear end cover of hydraulic cylinder |
| CN110513355A (en) * | 2019-09-24 | 2019-11-29 | 湖北咸宁三合机电股份有限公司 | A kind of water conservancy is removed contamination Oil cylinder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1362435A (en) * | 1919-05-29 | 1920-12-14 | Neraas Antone | Piston |
| US6089931A (en) * | 1998-03-31 | 2000-07-18 | Showa Corporation | Trim-tilt device for marine propulsion device |
| JP2003056512A (en) * | 2001-06-05 | 2003-02-26 | Ariizumi Sekkei:Kk | Fluid pressure cylinder |
| CN1148514C (en) * | 1998-05-29 | 2004-05-05 | 日立建机株式会社 | Oil hydraulic cylinder |
| US20090038472A1 (en) * | 2007-08-10 | 2009-02-12 | Hyco Pacoma Gmbh | Piston and Cylinder Unit |
| CN201963635U (en) * | 2011-04-08 | 2011-09-07 | 中集车辆（集团）有限公司 | Piston oil cylinder and concrete pump with same |
| CN202520690U (en) * | 2012-03-02 | 2012-11-07 | 常州海宏液压设备有限公司 | Shock-resistance heading machine advancing oil cylinder |
-
2012
- 2012-03-02 CN CN201210053103.5A patent/CN102536949B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1362435A (en) * | 1919-05-29 | 1920-12-14 | Neraas Antone | Piston |
| US6089931A (en) * | 1998-03-31 | 2000-07-18 | Showa Corporation | Trim-tilt device for marine propulsion device |
| CN1148514C (en) * | 1998-05-29 | 2004-05-05 | 日立建机株式会社 | Oil hydraulic cylinder |
| JP2003056512A (en) * | 2001-06-05 | 2003-02-26 | Ariizumi Sekkei:Kk | Fluid pressure cylinder |
| US20090038472A1 (en) * | 2007-08-10 | 2009-02-12 | Hyco Pacoma Gmbh | Piston and Cylinder Unit |
| CN201963635U (en) * | 2011-04-08 | 2011-09-07 | 中集车辆（集团）有限公司 | Piston oil cylinder and concrete pump with same |
| CN202520690U (en) * | 2012-03-02 | 2012-11-07 | 常州海宏液压设备有限公司 | Shock-resistance heading machine advancing oil cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829024A (en) * | 2012-09-04 | 2012-12-19 | 无锡市长江液压缸厂 | Mounting structure for piston rod and rear end cover of hydraulic cylinder |
| CN110513355A (en) * | 2019-09-24 | 2019-11-29 | 湖北咸宁三合机电股份有限公司 | A kind of water conservancy is removed contamination Oil cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102536949B (en) | 2016-01-06 |
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