CN101050688B - Airleg rock drill - Google Patents
Airleg rock drill Download PDFInfo
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- CN101050688B CN101050688B CN200710054390A CN200710054390A CN101050688B CN 101050688 B CN101050688 B CN 101050688B CN 200710054390 A CN200710054390 A CN 200710054390A CN 200710054390 A CN200710054390 A CN 200710054390A CN 101050688 B CN101050688 B CN 101050688B
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Abstract
The present invention relates to an air-feed leg rock drill, belonging to the field of pneumatic machinery technology. It includes three portions of cylinder body, holder body and machine head. In the cylinder body interior a valve body is set, said valve body is formed from valve cover, reversal valve which can be leftwards and rightwards slided on its shaft and valve chest. On D section of its valve chest four exhaust outlets are cut, on the internal circumferential surface of its reversal valve a circular groove is cut, on the right end face of its valve cover several axial holes are set, four radial holes cut in first circular groove are communicated with four axial holes cut on the valve cover and four radial holes cut in second circular groove are communicated with four axial holes set on the side surface of valve cover. Said invention can increase stroke of piston and can raise impact energy.
Description
Technical field
The present invention relates to the pneumatic machinery technical field, a kind of pusher leg drill that is widely used in rock blasting hole operation in the engineerings such as mine, traffic, national defence, water conservancy and hydropower.
Background technology
At present, the operating principle of traditional pusher leg drill is when gases at high pressure import valve actuating mechanism through the handle body, imports the ante-chamber and the back cavity of cylinder body by will calming the anger of replacing of the reversal valve of an activity, promotes piston and does to move back and forth at a high speed.During stroke, piston impact drilling tool cutter crushed rocks; During backhaul, piston drives drilling tool revolution certain angle, and continuous impact and revolution make drilling tool dig out circular big gun hole on rock or other targets.
The course of work of tradition pusher leg drill piston and air-flow is:
During piston stroke, calm the anger through control valve air flue, handle body air chamber, ratchet air flue, valve cabinet air flue, enter valve cabinet inner chamber, at this moment, the valve slides left, the backhaul inlet channel is closed, the stroke inlet channel is opened, and the stroke inlet channel of calming the anger by valve cabinet inner chamber and valve gap enters the cylinder body back cavity, promotes piston advances forward.When behind the piston along cross be positioned at the cylinder body back cavity push away valve opening the time, calm the anger by cylinder body push away the valve opening road, enter valve cabinet A chamber, push away the valve commutation, reversal valve slides to the right, closes the stroke inlet channel subsequently, open the backhaul inlet channel, the cylinder body back cavity stops air inlet, and piston relies on inertia and the expansion of back cavity air to continue preshoot, when piston is crossed air discharge duct, calm the anger and enter atmosphere through air discharge duct, at this moment, piston is finished the external acting of stroke by inertia high speed impact bit shank.
Backward stroke of the piston motion: when piston stroke cross be positioned at the cylinder back cavity push away valve opening the time, the valve opening road that pushes away of calming the anger by cylinder body enters valve cabinet A chamber, pushes away the valve commutation, reversal valve slides to the right.When piston was finished stroke movement, reversal valve had cut out the stroke inlet channel and has opened the backhaul inlet channel, and the ante-chamber main airway of calming the anger by cylinder body enters the cylinder body ante-chamber, promoted piston and moved backward.When the piston forward position cross be positioned at the cylinder body ante-chamber push away valve opening the time, calm the anger by the radially duct C that pushes away valve opening air flue and valve gap of cylinder body, enter the B chamber of valve, promote the commutation of reversal valve left lateral.Subsequently, begin to close the backhaul inlet channel, open the stroke inlet channel, the cylinder ante-chamber stops air inlet gradually, and piston relies on inertia and ante-chamber to calm the anger and expands and continues to retreat.When air discharge duct was crossed in the piston forward position, calming the anger entered atmosphere through air discharge duct, and piston moves after relying on inertia, make the back cavity formation air cushion of calming the anger, stop piston to continue to retreat, at this moment, the cylinder stroke gas circuit is opened fully, and back cavity begins air inlet, and piston begins stroke next time again.
The technical problem that the tradition pusher leg drill exists: when backward stroke of the piston is crossed air discharge duct, cylinder body back cavity gas begins compression, and at this moment, back cavity does not have the exhaust passage, to form air cushion too early, make piston stroke shorten, when piston stroke, also because the ante-chamber exhaust is not smooth, form air cushion too early, cause in the reciprocating motion of the pistons stroke too short, impact energy reduces, inefficiency.
Summary of the invention
In order to overcome traditional pusher leg drill in piston stroke and backhaul process, air cushion forms too early, the purpose of this invention is to provide a kind of pusher leg drill, the kinetic energy that this pusher leg drill can increase the stroke of piston and oversize piston when impacting bit shank, strengthen impact energy, thereby realize the purpose of energy-efficient consumption reduction.
In order to realize the foregoing invention purpose, the present invention adopts technical scheme as described below:
Described pusher leg drill comprises: handle body, cylinder body, head; Its cylinder body is built-in with valve body, valve body by valve gap and on its axle movably reversal valve be arranged in the valve cabinet and constitute smart the cooperation; The front end of valve body is equipped with piston mobile; The rear end of valve body is equipped with ratchet and handle body; By stroke and the backhaul that the switching of the reversal valve in the valve cabinet is dashed, but backhaul gas circuit control piston is done front-rear reciprocation movement formation piston in cylinder body; Valve cabinet and cylinder body are provided with the gas circuit that can postpone stroke air cushion formation time, and valve gap, reversal valve and cylinder body are provided with the gas circuit that can postpone backhaul air cushion formation time.
Described pusher leg drill, the gas circuit that postpones stroke air cushion formation time are the valve cabinet master pores that is communicated with valve body by the ante-chamber master pore of cylinder body, on the steam vent of the main pore of valve cabinet through being provided with on the valve cabinet D cross section and the cylinder body corresponding steam vent formation are set.
Described pusher leg drill, the gas circuit that postpones backhaul air cushion formation time is the radial hole that is provided with by in first cannelure on the axial hole connection valve gap axle of the right side setting of valve gap, calm the anger and enter the radial hole in second cannelure on the valve gap axle by the new cannelure of digging on the interior circle of reversal valve, radial hole is communicated with the steam vent of valve gap side, the corresponding steam vent formation that is provided with on steam vent and the cylinder body.
Described pusher leg drill, the D cross section of its valve cabinet is provided with several steam vents.
Described pusher leg drill, the interior garden of its reversal valve is provided with cannelure.
Described pusher leg drill, the steam vent corresponding position in its cylinder body and valve cabinet D cross section is provided with several steam vents; The steam vent corresponding position of cylinder body and valve gap side is provided with several steam vents.
Described pusher leg drill, the right side of its valve gap is provided with several axial holes, and the side of valve gap is provided with several rod radial air vents; The valve gap axle is provided with two cannelures, and several radial holes that are provided with in first cannelure are communicated with several axial holes of valve gap, and several radial holes that are provided with in second cannelure are communicated with several rod radial air vents that the valve gap side is provided with.
The gas circuit air exchanging method of described pusher leg drill: during piston stroke, the reversal valve slides left, the stroke inlet channel is opened, promote piston advances forward, when behind the piston when crossing back cavity and push away valve opening, push away the valve commutation, reversal valve slides to the right, closes the stroke inlet channel; When piston is crossed air discharge duct, calm the anger and enter atmosphere, at this moment, piston moves ahead by inertia, when the cylinder body ante-chamber be compressed air will form air cushion the time, several steam vents of calming the anger and can be provided with to the valve cabinet D cross section by the ante-chamber main airway, several steam vents of the correspondence that is provided with on cylinder body suitably enter atmosphere, the air cushion formation time is postponed, and piston is by inertia high speed impact bit shank.During backward stroke of the piston, reversal valve slides to the right, has opened the backhaul inlet channel, promotes piston and moves backward; When piston is crossed the cylinder body ante-chamber and is pushed away valve opening, push away the valve commutation, the reversal valve slides left is closed the backhaul inlet channel, and piston relies on inertia and ante-chamber to calm the anger and expands and continues to retreat, and when piston was crossed air discharge duct, calming the anger entered atmosphere through air discharge duct; Piston moves after relying on inertia, when the cylinder body back cavity is calmed the anger the formation air cushion, several axial holes that can be provided with by the right side of valve gap of calming the anger are communicated with several radial holes that are provided with in first cannelure on the valve gap axle, the cannelure that is provided with on the interior circle by reversal valve enters several radial holes in second cannelure on the valve gap axle, radial hole is communicated with several steam vents that the valve gap side is provided with, several steam vents of the correspondence that is provided with on cylinder body of calming the anger suitably enter atmosphere, the air cushion formation time is postponed, strengthened the stroke of piston.At this moment, the stroke inlet channel is opened, and piston begins stroke next time again.
Owing to adopted aforesaid technical scheme, the present invention has following superiority:
This pusher leg drill, the whole novel scavenging period when having adopted pistons work is when making piston stroke, the air cushion formation time is postponed, piston impact is reduced as far as possible to the resistance before the bit shank, has strengthened the kinetic energy of piston impact bit shank, has improved the effect of external acting; Equally, during backward stroke of the piston, also, increased the stroke of piston, therefore strengthened the impact energy of piston, realized the purpose of energy-efficient consumption reduction because the air cushion formation time is postponed.
Description of drawings
Fig. 1 is the piston stroke structural representation of pusher leg drill;
Fig. 2 is the backward stroke of the piston structural representation of pusher leg drill;
Fig. 3 is the reversal valve structure chart of pusher leg drill;
Fig. 4 is the valve cabinet figure of pusher leg drill;
Fig. 5 is the valve cover structure figure a of pusher leg drill;
Fig. 6 is the valve cover structure figure b of pusher leg drill;
Among the figure: the 1-cylinder body; The 2-ratchet; The 3-reversal valve; 4-valve cabinet; The 5-valve gap; The 6-piston; 7-valve cabinet master pore; 8 (a, b)-steam vents; The 9-sound proof housing; The 10-ante-chamber pushes away valve opening; The 11-back cavity pushes away valve opening; The 12-axial hole; The 13-cannelure; 14 (a, b)-radial holes; 15-ante-chamber master pore; The 16-air discharge duct; 17-first cannelure; 18-second cannelure; A-valve cabinet A chamber; The B chamber of B-valve; C-is duct C radially; The D cross section of D-valve cabinet;
The specific embodiment
Shown in Fig. 1,2,3,4,5,6: this pusher leg drill comprises: handle body, cylinder body (1) and head three parts; Its cylinder body (1) is built-in with valve body, and valve body is reached the reversal valve (3) that can horizontally slip and forms with valve cabinet (4) on it by valve gap (5); The new cutting in the D cross section of its valve cabinet (4) has 4 steam vents (8a), and new the cutting has cannelure (13) on the interior circle of its reversal valve (3).New 4 radial holes (14a) of digging are communicated with upward new 4 axial holes (12) dug of valve gap (5) in first cannelure (17).New 4 radial holes (14b) of digging are communicated with new 4 rod radial air vents (8b) dug in valve gap (5) side in second cannelure (18).The new cutting in the right side of its valve gap (5) has 4 axial holes (12), and new cutting the in the side of valve gap (5) has 4 steam vents (8b); The new cutting has two cannelures on valve gap (5) axle, and its cylinder body (1) has 4 steam vents with new cutting the in steam vent (8b) corresponding position of valve gap (5) side.Its cylinder body (1) has 4 steam vents with new cutting the in steam vent (8a) corresponding position in valve cabinet (4) D cross section; The front end of handle body connects cylinder body (1), and cylinder body is built-in with valve body, and the valve body front end is provided with piston, and the front end of cylinder body connects head, does stroke and the backhaul that front-rear reciprocation movement promptly constitutes piston by piston in cylinder body; Valve cabinet (4) and cylinder body (1) are provided with the gas circuit that can postpone stroke air cushion formation time, be the valve cabinet master pore (7) that is communicated with valve body by the ante-chamber master pore (15) of cylinder body (1), the main pore of valve cabinet is new corresponding steam vent formation of digging on new 4 steam vents (8a) of digging on the valve cabinet D cross section and cylinder body.Valve gap (5), reversal valve (3) and cylinder body (1) are provided with the gas circuit that can postpone backhaul air cushion formation time, be to be communicated with on the valve gap axle the new radial hole of digging (14a) in first cannelure (17) by the axial hole (12) that the right side of valve gap is provided with, calm the anger and enter the radial hole (14b) in second cannelure (18) on the valve gap axle by the new cannelure of digging (13) on the interior circle of reversal valve (3), radial hole is communicated with the steam vent (8b) of valve gap side, the corresponding steam vent formation that is provided with on steam vent and the cylinder body.
The gas circuit ventilation course of work of this pusher leg drill: during piston (6) stroke, reversal valve (3) slides left, the stroke inlet channel is opened, promote piston advances forward, when behind the piston when crossing back cavity and push away valve opening (11), push away the valve commutation, reversal valve slides to the right, closes the stroke inlet channel; When piston is crossed air discharge duct (16), calm the anger and enter atmosphere, at this moment, piston moves ahead by inertia, when the cylinder body ante-chamber be compressed air will form air cushion the time, several steam vents (8a) of calming the anger and can be provided with to the valve cabinet D cross section by the ante-chamber main airway, several steam vents of the correspondence that is provided with on cylinder body suitably enter atmosphere, the air cushion formation time is postponed, and piston is by inertia high speed impact bit shank; During piston (6) backhaul, reversal valve (3) slides to the right, has opened the backhaul inlet channel, promotes piston and moves backward; When piston is crossed the cylinder body ante-chamber and pushed away valve opening (10), push away the valve commutation, the reversal valve slides left, close the backhaul inlet channel, piston relies on inertia and ante-chamber to calm the anger and expands and continues to retreat, and when piston was crossed air discharge duct (16), calming the anger entered atmosphere through air discharge duct by sound proof housing (9); Piston moves after relying on inertia, when the cylinder body back cavity is calmed the anger the formation air cushion, several axial holes (12) that the right side that can pass through valve gap (5) is provided with of calming the anger are communicated with several radial holes (14a) that are provided with in first cannelure (17) on the valve gap axle, the cannelure (13) that is provided with on the interior circle by reversal valve (3) enters several radial holes (14b) in second cannelure (18) on the valve gap axle, radial hole is communicated with the steam vent (8b) that the valve gap side is provided with, several steam vents of the correspondence that is provided with on cylinder body of calming the anger suitably enter atmosphere, the air cushion formation time is postponed, strengthened the stroke of piston.At this moment, the stroke inlet channel is opened, and piston begins stroke next time again.
Claims (5)
1. a pusher leg drill comprises: handle body, cylinder body (1), head three parts; Its cylinder body (1) is built-in with valve body, valve body by valve gap (5) and on its axle movably reversal valve (3) be arranged in the valve cabinet (4) essence and join formation, the front end of valve body is equipped with piston mobile (6), the rear end of valve body is equipped with ratchet (2) and handle body; By stroke and the backhaul that the switching of the reversal valve in the valve cabinet is dashed, but backhaul gas circuit control piston is done front-rear reciprocation movement formation piston in cylinder body; It is characterized in that: valve cabinet (4) and cylinder body (1) are provided with the gas circuit that can postpone stroke air cushion formation time, the gas circuit of described delay stroke air cushion formation time is the valve cabinet master pore (7) that is communicated with valve body by the ante-chamber master pore (15) of cylinder body (1), and the corresponding steam vent that the main pore of described valve cabinet is provided with on steam vent (8a) that valve cashier's office in a shop is provided with and cylinder body is communicated with formation; Valve gap (5), reversal valve (3) and cylinder body (1) are provided with the gas circuit that can postpone backhaul air cushion formation time; The gas circuit of described delay backhaul air cushion formation time is the radial hole (14a) that is communicated with the interior setting of first cannelure (17) on the valve gap axle by the axial hole (12) of the right side setting of valve gap, the cannelure (13) that is provided with on the interior circle of described reversal valve (3) is communicated with the steam vent (8b) of valve gap side by the radial hole (14b) in second cannelure (18) on the valve gap axle, the corresponding steam vent formation that is provided with on the steam vent of described valve gap and the cylinder body.
2. pusher leg drill according to claim 1 is characterized in that: the steam vent (8a) of valve cabinet (4) is several.
3. pusher leg drill according to claim 1 is characterized in that: its cylinder body (1) is provided with several steam vents with steam vent (8a) corresponding position of valve cabinet (4); Cylinder body (1) is provided with several steam vents with steam vent (8b) corresponding position of valve gap (5) side.
4. pusher leg drill according to claim 1 is characterized in that: the right side of its valve gap (5) is provided with several axial holes (12), and the side of valve gap (5) is provided with several rod radial air vents (8b); Valve gap (5) axle is provided with two cannelures, and several radial holes (14a) that are provided with in first cannelure (17) are communicated with several axial holes (12) of valve gap (5); Several radial holes (14b) that are provided with in second cannelure (18) are communicated with several rod radial air vents (8b) that valve gap (5) side is provided with.
1), during piston stroke 5. implements the gas circuit air exchanging method of a kind of pusher leg drill of the described pusher leg drill of claim 1: it is characterized in that:, reversal valve (3) slides left, the stroke inlet channel is opened, promoting piston (6) travels forward, when behind the piston when crossing back cavity and push away valve opening (11), push away the valve commutation, reversal valve slides to the right, closes the stroke inlet channel; When piston is crossed air discharge duct (16), calm the anger and enter atmosphere, at this moment, piston moves ahead by inertia, when the cylinder body ante-chamber be compressed air will form air cushion the time, several steam vents (8a) of calming the anger and can be provided with to the valve cabinet by the ante-chamber main airway, several steam vents of going up the correspondence that is provided with through cylinder body (1) suitably enter atmosphere, the air cushion formation time is postponed, and piston is by inertia high speed impact bit shank; 2), during piston (6) backhaul, reversal valve slides to the right, has opened the backhaul inlet channel, promotes piston and moves backward; When piston (6) is crossed the cylinder body ante-chamber and pushed away valve opening (10), push away the valve commutation, reversal valve (3) slides left, close the backhaul inlet channel, piston relies on inertia and ante-chamber to calm the anger and expands and continues to retreat, and when piston (6) was crossed air discharge duct (16), calming the anger entered atmosphere through air discharge duct; Piston moves after relying on inertia, when the cylinder body back cavity is calmed the anger the formation air cushion, several radial holes (14a) that several axial holes (12) that can the right side by valve gap be provided with of calming the anger are provided with in first cannelure (17) to the valve gap axle, and the cannelure (13) that is provided with on the interior circle by reversal valve enters several radial holes (14b) in valve gap (5) last second cannelure of axle (18), the steam vent (8b) of calming the anger and being provided with of radial hole (14b) to the valve gap side, and the steam vent of valve gap side (8b) is calmed the anger, and several steam vents of the correspondence of setting suitably enter atmosphere on cylinder body (1), the air cushion formation time is postponed, strengthened the stroke of piston; At this moment, the stroke inlet channel is opened, and piston begins stroke next time again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710054390A CN101050688B (en) | 2007-05-11 | 2007-05-11 | Airleg rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710054390A CN101050688B (en) | 2007-05-11 | 2007-05-11 | Airleg rock drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101050688A CN101050688A (en) | 2007-10-10 |
| CN101050688B true CN101050688B (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710054390A Expired - Fee Related CN101050688B (en) | 2007-05-11 | 2007-05-11 | Airleg rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101050688B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761309B (en) * | 2009-12-21 | 2012-06-27 | 浙江衢州煤矿机械总厂有限公司 | Stoper |
| CN106089019B (en) * | 2016-08-06 | 2018-02-06 | 山东天瑞重工有限公司 | A kind of energy saving method for rock machine of new structure |
| CN111270982B (en) * | 2020-03-12 | 2021-05-14 | 江苏合海集团股份有限公司 | Air-leg rock drill |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187918A (en) * | 1978-06-12 | 1980-02-12 | Wallace Clark | Down-hole earth drilling motor capable of free circulation |
| US5154244A (en) * | 1990-04-26 | 1992-10-13 | D.T.A. Pty Ltd | Transmission sleeve for a down hole hammer |
| CN2208099Y (en) * | 1994-06-14 | 1995-09-20 | 浙江衢州煤矿机械总厂 | One-way air feeding pneumatic support |
| CN2403887Y (en) * | 1999-11-24 | 2000-11-01 | 冉瑞国 | Airleg of rock drill |
| CN2554328Y (en) * | 2002-05-13 | 2003-06-04 | 天水风动工具厂 | Airleg rock drill |
| CN2653108Y (en) * | 2003-10-29 | 2004-11-03 | 陕西海立重工有限公司 | Novel airleg rock drill |
| CN201040998Y (en) * | 2007-05-16 | 2008-03-26 | 王光临 | Air-leg type rock drill |
-
2007
- 2007-05-11 CN CN200710054390A patent/CN101050688B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187918A (en) * | 1978-06-12 | 1980-02-12 | Wallace Clark | Down-hole earth drilling motor capable of free circulation |
| US5154244A (en) * | 1990-04-26 | 1992-10-13 | D.T.A. Pty Ltd | Transmission sleeve for a down hole hammer |
| CN2208099Y (en) * | 1994-06-14 | 1995-09-20 | 浙江衢州煤矿机械总厂 | One-way air feeding pneumatic support |
| CN2403887Y (en) * | 1999-11-24 | 2000-11-01 | 冉瑞国 | Airleg of rock drill |
| CN2554328Y (en) * | 2002-05-13 | 2003-06-04 | 天水风动工具厂 | Airleg rock drill |
| CN2653108Y (en) * | 2003-10-29 | 2004-11-03 | 陕西海立重工有限公司 | Novel airleg rock drill |
| CN201040998Y (en) * | 2007-05-16 | 2008-03-26 | 王光临 | Air-leg type rock drill |
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| Publication number | Publication date |
|---|---|
| CN101050688A (en) | 2007-10-10 |
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Granted publication date: 20100519 Termination date: 20110511 |