CN88204592U - High-efficience double valve pneumatic lashing mechanism - Google Patents
High-efficience double valve pneumatic lashing mechanism Download PDFInfo
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- CN88204592U CN88204592U CN 88204592 CN88204592U CN88204592U CN 88204592 U CN88204592 U CN 88204592U CN 88204592 CN88204592 CN 88204592 CN 88204592 U CN88204592 U CN 88204592U CN 88204592 U CN88204592 U CN 88204592U
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Abstract
The plunger of the air-actuated mechanism of the utility model is provided with a front air distribution rod and a rear air distribution rod. An impact rod is also used as the front air distribution rod, an air passage is arranged inside the rear air distribution rod, and the air passage can be communicated with a front pulling valve air passage and a rear pulling valve air passage by the plunger. The both ends of a cylinder body are provided with ring valve cabinets with exhaust passages, and the ring valve cabinets and a drum-type valve body compose a valve chamber. The two cavities of the valve chamber are respectively communicated with the front pulling valve air passage and the rear pulling valve air passage. Pressure differential pushes valve bodies to open and close a stroke, the air passage of a return-stroke, and the exhaust passages. The air inlet of the side wall of a valve sleeve and the air distribution cylindrical surfaces of the air distribution rods form definite distance air supplying, and the backsides of the ring valve cabinets are provided with air pad chambers. The back pressure of the plunger of the impact mechanism which continuously exhausts air and has a cushioning air pad shape is greatly reduced, and the energy of pressing air can be sufficiently used.
Description
The utility model relates to a kind of pneumatic type beater mechanism, particularly a kind of mining pneumatic type percussive drill.
To calm the anger is the impact facility of power, and for example hammer drill, pneumatic pick, pneumatic shovel, wind riveting gun etc. use quite extensive.Yet the capacity usage ratio of this class Pneumatic immpacting instrument is but very low.The output mechanical power of calming the anger only reaches 26-35% with the ratio of the effective energy of Compressed Gas.
The traditional structure of hammer drill is shown in Fig. 4,5, and when valve body (40) was in left position shown in Figure 4, to the back chamber (29) of cylinder body (1) air feed, cup (28) communicated with atmosphere plenum chamber (31) from air flue (35).Piston (2) AA face is crossed steam vent (71), and compression cup gas forms the braking air cushion and consumes piston kinetic energy.Piston impact bar (3) impacts the hammer drill work done.Piston BB face is crossed steam vent (71), and the chamber, back is communicated with atmosphere, abrupt pressure reduction, and the cup increased pressure pushes away valve by air flue (36) and moves to right at that time, and die in back chamber, the cup air feed, backhaul begins.The motion process and the stroke of backhaul are similar.
More than, we are two principal characters of traditional structure as can be seen.1, stroke and backhaul are supplied with continuously and are calmed the anger, and can only carry out isobaric work done, and can not carry out expansion working.2, by one fixedly steam vent suddenly intermittently discharge high pressure exhaust gas, and exhaust is incomplete.After the exhaust, residual a certain amount of waste gas in the cylinder is subjected to the adiabatic compression of piston.The waste gas that this part is compressed can not be returned to ortho states when being re-inflated, but halfway by high-pressure discharge, so a part of work done during compression is consumed in vain, we are referred to as the air cushion loss.So the traditional structure backhaul requires the expenditure of energy, under common service condition, air feed and the interrupted high pressure gas of the thing followed continuously make the energy loss of calming the anger about 40%, and the air cushion that the residual exhaust gases adiabatic compression is formed makes again and calms the anger energy loss more than 16%.
Huge exhaust noise is existing another critical defect of impacting facility.Owing to the inside and outside rapid impulsive noise that pressure changes and very brief exhaust process forms of steam vent is the main source of existing Pneumatic immpacting facility noise.
Obviously, the poor efficiency of existing Pneumatic immpacting facility and strong noise be by its structural defective decision, and the improvement of change, technology and material that can not be by design size is overcome.This point obtains proof theoretically by the inventor.
Task of the present invention is to avoid and overcomes above-mentioned shortcoming of the prior art, and a kind of continuous exhaust pneumatic wallop-kick back air cushion type gas impact machine is proposed, exhaust can be carried out in whole stroke and backhaul continuously, the back pressure of pistons work is all the time near atmospheric pressure, and calming the anger of work done also may be expanded near atmospheric pressure in the cylinder.In addition, the kinetic energy of backward stroke of the piston can be converted into stroke kinetic energy, the effective thermal efficiency of Pneumatic immpacting facility is increased substantially.
Task of the present invention is finished as follows:
Piston in the cylinder body has former and later two distribution bars, wherein preceding distribution bar is simultaneously as impact bar, in the back distribution bar inlet channel is arranged, link to each other with the radially air flue in the piston, and can be with preceding, pusher valve air flue communicates, respectively there is the annular plate valve cabinet of band exhaust passage at the cylinder body two ends, form valve chamber with telescopic valve body, two chambeies of valve chamber are respectively with preceding, pusher valve air flue communicates, before, rear valve body and corresponding valve pocket and the slipper seal of valve cabinet, open and close stroke, backhaul air intake duct and exhaust passage, before, back sleeve side wall have air inlet port with before, the distribution face of cylinder of back distribution bar forms the set a distance air feed, can air chamber be arranged relative to the valve cabinet back that cylinder body moves, the valve cabinet is located by the shoulder on the cylinder body.
Describe embodiments of the invention in detail below in conjunction with accompanying drawing.
Fig. 1 is the longitudinal sectional view of a kind of concrete structure of the present invention, and piston is in the backhaul initial state.
Fig. 2 is that this mechanism is in the state that stroke begins.
Fig. 3 is the structure chart of valve body.
Fig. 4 is the stroke movement of traditional mechanism.
Fig. 5 is the drawback movement of traditional mechanism.
With reference to Fig. 1, Fig. 2, piston (2) in cylinder body (1) has former and later two distribution bars (3), (4), wherein preceding distribution bar (3) is simultaneously as impact bar, inlet channel (41) is arranged in the back distribution bar (4), link to each other with the radially air flue (42) in the piston, can be respectively in motion process with casing wall in branch forward and backward push away valve air flue (43), (44) communicate.Inlet channel (41) is communicated with pressurized air source (38).There are annular plate valve cabinet (5), (6) in the two ends of cylinder body (1), have exhaust passage (59), (60) on it, communicate with steam vent (7), (8) respectively.Telescopic valve body (9), (10) with the gas differential pressure action are respectively arranged on forward and backward valve cabinet (5), (6), valve outer wall becomes valve chamber (45), (46) with the valve group, two chambeies that valve chamber is separated by valve body flange (47), (48) respectively with forward and backwardly push away valve air flue (43), (44) communicate, and see Fig. 2.Forward and backward valve body (9), (10) the endoporus slipper seal of valve pocket (19), (49) and valve cabinet (5), (6) relatively opens and closes air intake duct (11), (12) and exhaust passage (59) (60).Forward and backward valve pocket (19), (49) sidewall have air inlet port (20), (21), the distribution bar that slides in valve pocket has the distribution face of cylinder (17), (18) of set a distance air feed, when the thin neck of distribution bar (15), (16) process air inlet port (20), (21), calm the anger and to enter cylinder by passage therebetween, as Fig. 1 right side, Fig. 2 left side; When the distribution face of cylinder (17) of thick neck, (18) through out-of-date this air inlet of then closing, stop air feed.Thereby form the set a distance air feed.The set a distance air feed can be designed to the length that needs by the thin neck length degree decision of distribution bar.There are forward and backward air chamber (30), (31) in the back of valve cabinet (5), (6), from two air chambers of air flue (36) feeding of pressurized air source (38).The valve cabinet is subjected to the pressure of gas, by the shoulder on the cylinder body (33), (32) location.When the valve cabinet is subjected to piston impact, can move relative to cylinder body.The structure of cylinder body rear and front end is symmetry substantially, and principle is also identical, as front and back distribution bar, front and back valve body, front and rear row pore, front and back valve seat and front and back air chamber etc.
The structure of valve body is the cylindrical shroud barrel structure as shown in Figure 3, and the sealing flange (47) of annular is arranged on the outer wall, and its top and valve chamber form slipper seal, and valve chamber is divided into two chambeies.The endoporus and the valve pocket of valve body are slidingly matched, and the outer wall that opens and closes stroke and backhaul air intake duct (11), (12) valve body then can slide with valve cabinet hole, opens and closes exhaust passage (59), (60), sees Fig. 1,2.
Annular plate valve cabinet (5), (6) can be that L shaped annulus cooperates and forms by two sections, promptly by valve gap (23), (50) and valve seat (25), (51) are nested forms, its compound mode is seen Fig. 1,2.Wherein on valve gap (23), (50) exhaust passage (59), (60) are arranged, open and close by the valve body that is slidingly matched.The exhaust passage communicates with exhaust opening (7), (8) respectively.More than said annular plate valve cabinet also be easy to make other analogous shape, as with valve gap and valve seat to being connected into valve chamber, and do not adopt nested mode.
The following describes working process of mechanism.Referring to Fig. 1, Fig. 2, Fig. 1 is ended the position that backhaul begins for piston stroke.Pushing away right-side cavity that valve air flue (43) enters preceding valve chamber (45) by calming the anger of entering of back distribution bar endoporus (41) before piston air flue (42), cylinder body promotes front valve shell (9) and moves to left.Chamber, valve chamber left side is through pusher valve air flue (44) (see figure 2) that communicates with rear gas chamber (29) before this moment.And the calming the anger through expansion working of rear gas chamber, pressure is near atmospheric pressure, so front valve shell (9) is adjacent to the valve cabinet left, backhaul air intake duct (11) is opened, front-seat pore (7) sealing.Calm the anger simultaneously another branch through preceding pushing away valve air flue (43) enter after valve chamber (46) right side, also promote rear valve body (10) and move to left.Chamber, this moment back valve chamber (46) left side through pusher valve air flue (44) and pressure near the rear gas chamber of the atmospheric pressure (see figure 2) that communicates, so rear valve body also is adjacent to back valve chamber (46) left, rear gas chamber (29) and final vacuum hole (8) are connected, stroke air intake duct (12) sealing.Calm the anger through backhaul air intake duct (11) this moment, annular air channel between backhaul air inlet port (20) and piston impact bar venturi portion (15) and the preceding valve pocket (19) enters the preceding air chamber (28) of cylinder body, to the isobaric work done of piston, promote backward stroke of the piston motion (Fig. 1 left).The waste gas of rear gas chamber (29) then enters atmosphere by final vacuum hole (8), and the back pressure that makes the backward stroke of the piston motion is all the time near atmospheric pressure.
When backhaul air inlet port (20) was passed through on the distribution face of cylinder (17) of the thick neck of impact bar, the air feed of cylinder cup (28) interrupted.Entered quantitatively the calming the anger to the piston expansion working of cup, promoted piston (2) and move to left, piston kinetic energy continues to increase.The waste gas of rear gas chamber (29) continues to be discharged by final vacuum hole (8).Calming the anger of current air chamber expand into atmospheric pressure, and when the energy of promptly calming the anger had been fully used, piston air flue (42) was connected with cylinder body pusher valve air flue (44), sees Fig. 2.Calm the anger and enter the chamber, left side of preceding valve chamber (45), valve moves to right before promoting, the valve chamber right-side cavity then communicates with preceding air chamber (28) near atmospheric pressure through before pushing away valve air flue (43) before this moment, make valve body be adjacent to preceding valve chamber (45) to the right, at this moment backhaul air intake duct (11) sealing, the front-seat pore (7) of preceding air chamber (28) is opened.In like manner calming the anger also enters chamber, back valve chamber (46) left side, postpones valve (10) and moves to right, and makes final vacuum hole (8) sealing, and rear gas chamber (29) connects with stroke air intake duct (12), stroke air inlet port (21), and stroke is about to begin.This moment, piston relied on acquired kinetic energy to continue (left side) motion backward, bumped against with back valve cabinet (6), promoted back valve cabinet and moved backward together with rear valve body, to back air cushion (31) and spring (52) work done.The kinetic energy of piston is converted into after the compression potential energy of air cushion and spring, and the potential energy of storage is converted into piston and the proal kinetic energy of valve cabinet again rapidly, makes piston obtain a certain amount of initial velocity.
Fig. 2 is the state that stroke begins, calm the anger through stroke air intake duct (12), stroke air inlet port (21) and after the passage of distribution bar venturi portion (16) enter rear gas chamber (29), promote piston stroke motion (to the right).The waste gas of preceding air chamber then enters atmosphere by front-seat pore (7), and the back pressure that makes the piston stroke motion is all the time near atmospheric pressure.When stroke air inlet port (21) has been sealed on the face of cylinder, big footpath (18) of back distribution bar (4), the air inlet of back chamber is interrupted, entered the chamber, back by quantitatively the calming the anger of the thin neck length degree of distribution bar decision to the piston expansion working, promote piston and continue to quicken (Fig. 2 is to the right) forward.The waste gas of preceding air chamber is discharged by front-seat pore (7).When calming the anger of rear gas chamber (29) expand near atmospheric pressure, when energy was fully used, the piston impact bar impacted the hammer drill work done.Piston arrives position shown in Figure 1, a circulation finishes, and second backhaul begins.
At the back of cylinder body two end valve cabinets air chamber (30), (31) are set, the valve cabinet is adjacent to the shoulder place at the cylinder two ends under the effect of bleed pressure, by shoulder (32), (33) location.When this valve cabinet is subjected to impacting, can move relative to cylinder body as piston.The back of preceding valve cabinet is a buffering air chamber (30), when sky hits preceding valve cabinet is played the air-cushion protection effect.
For valve gap before and after guaranteeing is combined into the valve cabinet and unlikely the separation with valve seat, and make forward and backward air chamber and the normal connection of air flue (36), spring (52), (53) that compress valve seat are set in air chamber (30), (31).
The present invention has following characteristics except that the advantage that keeps existing Pneumatic immpacting facility:
1, the exhaust mode of this structure is continuous, and promptly the forward and backward air chamber of cylinder body replaces exhaust, says on the whole, and cylinder is in continuous exhaust pneumatic wallop state without a break.Because continuous exhaust pneumatic wallop, the waste gas after the work done of calming the anger just can be discharged fully, and the back pressure of piston just can be reduced near atmospheric pressure, and calming the anger of work done also may be expanded near atmospheric pressure in the cylinder.
2, the plenum system of this structure is interrupted, promptly only just carries out air feed in the certain distance of stroke and backhaul, and the set a distance air feed is the necessary condition of expansion working of calming the anger.
3, this structure has the device of a kick back air cushion at the cylinder rear portion, and the traditional structure backward stroke of the piston requires the expenditure of energy, and the kinetic energy when this structure can be with backward stroke of the piston is converted to the kinetic energy of piston stroke rapidly.
The present invention will make the energy of calming the anger be fully used, and effective thermal efficiency significantly improves.And reduce exhaust noise greatly, and improve working conditions, real is the important breakthrough of Pneumatic immpacting facility.
Claims (2)
1, a kind of gas impact machine, comprise cylinder body (1), piston (2), piston impact bar (3), steam vent, plenum chamber (38) and air flue (36), before it is characterized in that said piston (2) has, latter two distribution bar (3), (4), wherein preceding distribution bar (3) is simultaneously as impact bar, inlet channel (41) is arranged in the back distribution bar (4), link to each other with the radially air flue (42) in the piston, and can be with preceding, pusher valve air flue (43), (44) communicate, respectively there is band exhaust passage (59) at the cylinder body two ends, (60) annular plate valve cabinet (5), (6), with telescopic valve body (9), (10) form valve chamber (45), (46), two chambeies of valve chamber are respectively with preceding, pusher valve air flue (43), (44) communicate, before, rear valve body (9), (10) with corresponding valve pocket (19), (49) and valve cabinet (5), (6) slipper seal, open and close stroke, backhaul air intake duct (11), (12) and exhaust passage (59), (60), front and back valve pocket (19), (49) sidewall has air inlet port (20) (21), with distribution bar (3), (4) the distribution face of cylinder (17), (18) form the set a distance air feed, the valve cabinet (5) that can move relative to cylinder body, (6) there is air chamber (30) at the back, (31), the valve cabinet is by the shoulder on the cylinder body (32), (33) location.
2, gas impact machine as claimed in claim 1 is characterized in that spring (53), (52) that compress the valve cabinet are arranged in said air chamber (30), (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88204592 CN88204592U (en) | 1988-04-16 | 1988-04-16 | High-efficience double valve pneumatic lashing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88204592 CN88204592U (en) | 1988-04-16 | 1988-04-16 | High-efficience double valve pneumatic lashing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88204592U true CN88204592U (en) | 1988-12-07 |
Family
ID=4839166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88204592 Withdrawn CN88204592U (en) | 1988-04-16 | 1988-04-16 | High-efficience double valve pneumatic lashing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88204592U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377574B (en) * | 2007-08-31 | 2011-05-04 | 北京京东方光电科技有限公司 | Liquid crystal panel detection device |
| CN103332175A (en) * | 2013-07-03 | 2013-10-02 | 杭州电子科技大学 | Automobile shifting device |
| CN103557348A (en) * | 2013-11-06 | 2014-02-05 | 福州德格索兰机械有限公司 | TY24C valve bank |
| CN105829631A (en) * | 2013-12-18 | 2016-08-03 | 日本气动工业株式会社 | Impact-Driven Tool |
| CN111270982A (en) * | 2020-03-12 | 2020-06-12 | 姚佳锋 | Air-leg rock drill |
-
1988
- 1988-04-16 CN CN 88204592 patent/CN88204592U/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377574B (en) * | 2007-08-31 | 2011-05-04 | 北京京东方光电科技有限公司 | Liquid crystal panel detection device |
| CN103332175A (en) * | 2013-07-03 | 2013-10-02 | 杭州电子科技大学 | Automobile shifting device |
| CN103332175B (en) * | 2013-07-03 | 2015-04-22 | 杭州电子科技大学 | Automobile shifting device |
| CN103557348A (en) * | 2013-11-06 | 2014-02-05 | 福州德格索兰机械有限公司 | TY24C valve bank |
| CN103557348B (en) * | 2013-11-06 | 2016-08-31 | 福州德格索兰机械有限公司 | Valve group for TY24C type rock drill |
| CN105829631A (en) * | 2013-12-18 | 2016-08-03 | 日本气动工业株式会社 | Impact-Driven Tool |
| CN105829631B (en) * | 2013-12-18 | 2018-05-01 | 日本气动工业株式会社 | Percussion tool |
| US10343272B2 (en) | 2013-12-18 | 2019-07-09 | Nippon Pneumatic Mfg. Co., Ltd. | Impact-driven tool |
| CN111270982A (en) * | 2020-03-12 | 2020-06-12 | 姚佳锋 | Air-leg rock drill |
| CN111270982B (en) * | 2020-03-12 | 2021-05-14 | 江苏合海集团股份有限公司 | Air-leg rock drill |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |