CN102900727A - Device and method for buffering main oil cylinder of paste filling pump in coal mine - Google Patents
Device and method for buffering main oil cylinder of paste filling pump in coal mine Download PDFInfo
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- CN102900727A CN102900727A CN2012104565350A CN201210456535A CN102900727A CN 102900727 A CN102900727 A CN 102900727A CN 2012104565350 A CN2012104565350 A CN 2012104565350A CN 201210456535 A CN201210456535 A CN 201210456535A CN 102900727 A CN102900727 A CN 102900727A
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- restrictor ring
- piston rod
- unsteady
- oil cylinder
- piston
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Abstract
The invention relates to device and method for buffering a main oil cylinder of a paste filling pump in a coal mine, and belongs to a device and a method for buffering a paste filling pump. The device comprises a cylinder barrel, a piston, a limiting cover, an oil cylinder bottom, a floating restrictor ring and a piston rod, wherein the oil cylinder bottom is connected to one end of the cylinder barrel; the piston is positioned in the cylinder barrel; the limiting cover is connected with the oil cylinder bottom; the floating restrictor ring is arranged between the limiting cover and the oil cylinder bottom; the stern post of the piston rod is inserted into the floating restrictor ring; and the piston rod is connected with the piston by adopting screw threads. In the method, the stern post of the piston rod is in a stepped structural form, and buffer action is completed with the gradual reduction of a gap positioned between the stern post of the piston rod and the floating restrictor ring and the gradual increase of buffer degree in the process of the stern post of the piston rod gradually inserted into the floating restrictor ring. According to the invention, the problem of large processing difficulty caused by high required match accuracy is solved, and the requirement for regulation of buffer effect under different work conditions is realized; and the device disclosed by the invention has the advantages of simple structure, stable and reliable work and long service life.
Description
Technical field
The present invention relates to a kind of damping device and method of filling pump, particularly a kind of coal mine paste filling pump master cylinder damping device and method.
Background technique
Damping device is the important component of hydraulic jack, and the prior art hydrocylinder buffering device comprises buffering ring and throttle valve.Buffering ring and cushion hole sealed sliding movingly, hydraulic oil enters in the cylinder cap oil pocket through pod apertures and throttle valve, then flows back to fuel tank by oil outlet.The advantage of the method is to have under the different operating of the satisfying condition the different requirements of cushioning effect, but it is very high that the external diameter of prior art buffering ring and the quality of fit of cushion hole require, therefore also very high to the cooperation precision prescribed of making processing, structure is complicated, when if the size of mating parts or form and position tolerance are overproof, be easy to cause buffering ring to cooperate with cushion hole not smooth, cause the damping device job insecurity.
Summary of the invention
The objective of the invention is to provide a kind of simple in structure, coal mine paste filling pump master cylinder damping device and the method for working stability.
The objective of the invention is that technological scheme by apparatus and method realizes: described device comprises: at the bottom of cylinder barrel, piston, limited cover, the oil cylinder, restrictor ring and piston rod float; Be connected to an end of cylinder barrel at the bottom of the oil cylinder, piston is positioned at cylinder barrel, and limited cover is connected with at the bottom of the oil cylinder, between unsteady restrictor ring is installed at the bottom of limited cover and the oil cylinder; The stern post of piston rod inserts the restrictor ring that floats; Piston rod adopts screw thread to be connected with piston.
The stern post of described piston rod is that ladder is structural type.
There is groove described unsteady restrictor ring border, and groove is six, is distributed on the restrictor ring border of floating, and there is angle of deflection at the restrictor ring boss hole place of floating, and the material of described unsteady restrictor ring is used bronze, and Chemical composition is ZCuAl9Fe4Ni4Mn2; The difference of the internal diameter of described unsteady restrictor ring and piston rod end maximum outside diameter is 0.34～0.47mm.
Described method: the threading of limited cover external diameter is connected with at the bottom of the oil cylinder with thread forms, between unsteady restrictor ring is installed at the bottom of limited cover and the oil cylinder; The hydraulic oil restrictor ring that will float is pushed into the left side near limited cover during oil-feed, and hydraulic oil is out finished cylinder action by six uniform concentrated flows of the restrictor ring border of floating subsequently; When piston is regained, the stern post of piston rod inserts the restrictor ring that floats, oil pressure promotes unsteady restrictor ring and is close to cylinder bottom, oil flows away from the stern post of piston rod and the slit between unsteady restrictor ring, played the effect of buffering, the stern post of piston rod is the hierarchic structure form, and there is angle of deflection at the restrictor ring boss hole place of floating, and piston rod realizes proofreading and correct centering automatically; The stern post that is accompanied by piston rod inserts in the process of the restrictor ring that floats gradually, and the slit between the stern post of piston rod and unsteady restrictor ring reduces gradually, and the degree of buffering strengthens gradually, has finished the action of buffering; The material of unsteady restrictor ring is used bronze, prevents the wearing and tearing that unsteady restrictor ring frequent movement causes.
Beneficial effect, owing to having adopted such scheme, the threading of limited cover external diameter is connected with at the bottom of the oil cylinder with thread forms, has avoided causing because the cooperation precision prescribed is high the large problem of difficulty of processing; Between unsteady restrictor ring was installed at the bottom of limited cover and the oil cylinder, the hydraulic oil restrictor ring that will float was pushed into the left side near limited cover during oil-feed, and hydraulic oil is out finished cylinder action by six uniform concentrated flows of the restrictor ring border of floating subsequently; When piston is regained, the stern post of piston rod inserts the restrictor ring that floats, oil pressure promotes unsteady restrictor ring and is close to cylinder bottom, oil can only flow away from the stern post of piston rod and the slit between unsteady restrictor ring, played the effect of buffering, the stern post of piston rod is that ladder is structural type, the stern post that is accompanied by stopper rod inserts in the process of the restrictor ring that floats gradually, slit between the stern post of piston rod and unsteady restrictor ring reduces gradually, the degree of buffering strengthens gradually, improve the effect of buffering, also can realize the requirement of under the different operating condition cushioning effect being adjusted; There is angle of deflection at unsteady restrictor ring boss hole place, makes piston rod automatically realize proofreading and correct centering.The material of unsteady restrictor ring is used the ZCuAl9Fe4Ni4Mn2(bronze), prevent the wearing and tearing that unsteady restrictor ring frequent movement causes.Simple in structure, working stability has reached purpose of the present invention.
Advantage: the present invention has avoided because cooperate precision prescribed high and cause the large problem of difficulty of processing, has realized the requirement under the different operating condition cushioning effect adjusted, and simple in structure, working stability is reliable, long service life.
Description of drawings
Fig. 1 is the structural drawing of coal mine paste filling pump master cylinder damping device of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the restrictor ring structure sectional view that floats.
Fig. 4 is the restrictor ring structural representation that floats.
Fig. 5 is piston rod stern post structural representation.
Among the figure, 1, cylinder barrel; 2, piston; 3, limited cover; 4, at the bottom of the oil cylinder; 5, unsteady restrictor ring; 6, piston rod.
Embodiment
Embodiment 1: coal mine paste filling pump master cylinder buffering of the present invention comprises apparatus and method;
Described device comprises: at the bottom of cylinder barrel 1, piston 2, limited cover 3, the oil cylinder 4, restrictor ring 5 and piston rod 6 float; 4 ends that are connected to cylinder barrel 1 at the bottom of the oil cylinder, piston 2 is positioned at cylinder barrel 1, limited cover 3 with 4 be connected at the bottom of the oil cylinder, the restrictor ring 5 that floats is installed at the bottom of limited cover 3 and the oil cylinder between 4; The stern post of piston rod 6 inserts the restrictor ring 5 that floats; Piston rod 6 adopts screw thread to be connected with piston 2.
The stern post of described piston rod 6 is that ladder is structural type.
There is groove described unsteady restrictor ring 5 borders, and groove is six, are distributed on the restrictor ring border of floating, and there is angle of deflection at the restrictor ring 5 boss hole places of floating, and the material of described unsteady restrictor ring 5 is used bronze, and Chemical composition is ZCuAl9Fe4Ni4Mn2; The difference of the internal diameter of described unsteady restrictor ring 5 and piston rod end maximum outside diameter is 0.34～0.47mm.
Described method: limited cover 3 external diameter threadings, with thread forms with 4 be connected at the bottom of the oil cylinder, the restrictor ring 5 that floats is installed at the bottom of limited cover 3 and the oil cylinder between 4; The hydraulic oil restrictor ring 5 that will float is pushed into the left side near limited cover 3 during oil-feed, and hydraulic oil is out finished cylinder action by six uniform concentrated flows of restrictor ring 5 borders of floating subsequently; When piston 2 is regained, the stern post of piston rod 6 inserts the restrictor ring 5 that floats, oil pressure promotes unsteady restrictor ring 5 and is close to cylinder bottom 4, oil flows away from the slit of 5 of the stern post of piston rod 6 and unsteady restrictor rings, played the effect of buffering, the stern post of piston rod 6 is hierarchic structure forms, and there is angle of deflection at the restrictor ring 5 boss hole places of floating, and piston rod realizes proofreading and correct centering automatically; The stern post that is accompanied by piston rod 6 inserts in the process of the restrictor ring 5 that floats gradually, and the slit that the stern post of piston rod 6 and unsteady restrictor ring are 5 reduces gradually, and the degree of buffering strengthens gradually, has finished the action of buffering; The material of unsteady restrictor ring 5 is used bronze, prevents the wearing and tearing that unsteady restrictor ring 5 frequent movements cause.
Claims (4)
1. coal mine paste filling pump master cylinder damping device, it is characterized in that: described device comprises: at the bottom of cylinder barrel, piston, limited cover, the oil cylinder, restrictor ring and piston rod float; Be connected to an end of cylinder barrel at the bottom of the oil cylinder, piston is positioned at cylinder barrel, and limited cover is connected with at the bottom of the oil cylinder, between unsteady restrictor ring is installed at the bottom of limited cover and the oil cylinder; The stern post of piston rod inserts the restrictor ring that floats; Piston rod adopts screw thread to be connected with piston.
2. a kind of coal mine paste filling pump master cylinder damping device according to claim 1, it is characterized in that: the stern post of described piston rod is that ladder is structural type.
3. a kind of coal mine paste filling pump master cylinder damping device according to claim 1, it is characterized in that: there is groove described unsteady restrictor ring border, groove is six, be distributed on the restrictor ring border of floating, there is angle of deflection at unsteady restrictor ring boss hole place, the material of described unsteady restrictor ring is used bronze, and Chemical composition is ZCuAl9Fe4Ni4Mn2; The difference of the internal diameter of described unsteady restrictor ring and piston rod end maximum outside diameter is 0.34～0.47mm.
4. method that realizes coal mine paste filling pump master cylinder buffering, it is characterized in that: described method: the threading of limited cover external diameter is connected with at the bottom of the oil cylinder with thread forms, between unsteady restrictor ring is installed at the bottom of limited cover and the oil cylinder; The hydraulic oil restrictor ring that will float is pushed into the left side near limited cover during oil-feed, and hydraulic oil is out finished cylinder action by six uniform concentrated flows of the restrictor ring border of floating subsequently; When piston is regained, the stern post of piston rod inserts the restrictor ring that floats, oil pressure promotes unsteady restrictor ring and is close to cylinder bottom, oil flows away from the stern post of piston rod and the slit between unsteady restrictor ring, played the effect of buffering, the stern post of piston rod is the hierarchic structure form, and there is angle of deflection at the restrictor ring boss hole place of floating, and piston rod realizes proofreading and correct centering automatically; The stern post that is accompanied by piston rod inserts in the process of the restrictor ring that floats gradually, and the slit between the stern post of piston rod and unsteady restrictor ring reduces gradually, and the degree of buffering strengthens gradually, has finished the action of buffering; The material of unsteady restrictor ring is used bronze, prevents the wearing and tearing that unsteady restrictor ring frequent movement causes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104565350A CN102900727A (en) | 2012-11-14 | 2012-11-14 | Device and method for buffering main oil cylinder of paste filling pump in coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104565350A CN102900727A (en) | 2012-11-14 | 2012-11-14 | Device and method for buffering main oil cylinder of paste filling pump in coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102900727A true CN102900727A (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104565350A Pending CN102900727A (en) | 2012-11-14 | 2012-11-14 | Device and method for buffering main oil cylinder of paste filling pump in coal mine |
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| CN (1) | CN102900727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752796A (en) * | 2014-02-13 | 2014-04-30 | 江苏博众汽车部件有限公司 | Piston air cylinder for pressure casting |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB998753A (en) * | 1962-12-13 | 1965-07-21 | Parker Hannifin Corp | Piston cushion for fluid operated cylinder |
| US3964370A (en) * | 1974-07-15 | 1976-06-22 | Parker-Hannifin Corporation | Cushioning means for hydraulic cylinder |
| EP0004948A1 (en) * | 1978-04-14 | 1979-10-31 | COMPAGNIE PARISIENNE D'OUTILLAGE A AIR COMPRIME Société anonyme dite: | Actuator with cushioned piston |
| US5125325A (en) * | 1990-12-18 | 1992-06-30 | John Crossno | Piston with cushioning spear having exhaust ports therein |
| CN101235837A (en) * | 2008-03-07 | 2008-08-06 | 汪立平 | Constant throttle -type amortization structure high pressure oil cylinder |
| CN201284769Y (en) * | 2008-10-17 | 2009-08-05 | 云南兴长江实业有限公司 | Floating buffering mechanism of hydraulic cylinder |
| CN101598156A (en) * | 2009-06-17 | 2009-12-09 | 江苏恒立高压油缸有限公司 | Floating-type cushion cylinder |
| CN101963168A (en) * | 2010-10-20 | 2011-02-02 | 小冶精通（天津）液压机械有限公司 | Hydro-cylinder for performing buffering by using floating one-way valve sheet |
-
2012
- 2012-11-14 CN CN2012104565350A patent/CN102900727A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB998753A (en) * | 1962-12-13 | 1965-07-21 | Parker Hannifin Corp | Piston cushion for fluid operated cylinder |
| US3964370A (en) * | 1974-07-15 | 1976-06-22 | Parker-Hannifin Corporation | Cushioning means for hydraulic cylinder |
| EP0004948A1 (en) * | 1978-04-14 | 1979-10-31 | COMPAGNIE PARISIENNE D'OUTILLAGE A AIR COMPRIME Société anonyme dite: | Actuator with cushioned piston |
| US5125325A (en) * | 1990-12-18 | 1992-06-30 | John Crossno | Piston with cushioning spear having exhaust ports therein |
| CN101235837A (en) * | 2008-03-07 | 2008-08-06 | 汪立平 | Constant throttle -type amortization structure high pressure oil cylinder |
| CN201284769Y (en) * | 2008-10-17 | 2009-08-05 | 云南兴长江实业有限公司 | Floating buffering mechanism of hydraulic cylinder |
| CN101598156A (en) * | 2009-06-17 | 2009-12-09 | 江苏恒立高压油缸有限公司 | Floating-type cushion cylinder |
| CN101963168A (en) * | 2010-10-20 | 2011-02-02 | 小冶精通（天津）液压机械有限公司 | Hydro-cylinder for performing buffering by using floating one-way valve sheet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752796A (en) * | 2014-02-13 | 2014-04-30 | 江苏博众汽车部件有限公司 | Piston air cylinder for pressure casting |
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Application publication date: 20130130 |