CN215860052U - Handle body for rock drill - Google Patents

Abstract

The utility model discloses a handle body for a rock drill, which comprises a handle body main body, wherein a water injection valve installation cavity and an operating valve installation cavity are formed in the handle body main body, a water injection valve is installed in the water injection valve installation cavity and is communicated with a water needle, an operating valve is installed in the operating valve installation cavity, one end of the operating valve extends to the outer side of the handle body main body and is provided with an operating handle, a first pore passage, a second pore passage, a third pore passage, a fourth pore passage for supplying air to the rock drill and a water inlet pore passage for supplying water to the rock drill are formed in the handle body main body; the first pore passage is communicated with the third pore passage, the first pore passage is communicated with the operating valve installation cavity, and the third pore passage is communicated with the external atmosphere; the second pore passage is communicated with the water injection valve installation cavity and is used for conveying compressed air to drive the water injection valve to open.

Description

Handle body for rock drill

Technical Field

The utility model belongs to the technical field of rock drills, and particularly relates to a handle body for a rock drill.

Background

The rock drill is a machine for drilling holes on rocks, and the main working principle of the rock drill is that compressed air is used as power, a piston is controlled by a passive valve to do high-frequency reciprocating motion, and a drill shank is impacted continuously; wherein: during the stroke, the piston impacts the drill bit shank under the action of impact force, and the drill bit crushes and drills rock to a certain depth; during return stroke, the piston drives the drill tool to rotate for a certain angle, and then the piston moves forwards to impact the drill shank again; the piston continuously impacts and rotates, and the rock drill continuously inputs compressed air and high-pressure water from the central hole of the drill bit to discharge rock slag out of the hole, so that the drill bit drills a round blast hole on the rock.

The handle body of the rock drill on the rock drill is an important component of the rock drill; key parts such as an operating valve, a water injection valve group, a pressure regulating valve, a reversing valve and the like are all concentrated on the handle body and are used for controlling the starting and stopping of the rock drill and the expansion of the air leg.

The existing rock drill handle body has a simple integral structure, and is disclosed as the following patent numbers: CN202021993700.2 discloses a novel pnematic rock drill water injection mechanism, including the handle body and drill rod, drill rod tail end fixed connection is at the handle body front end, and the drill rod is close to the surface and is provided with many water courses, and the water course that is close to the drill rod front end is provided with the hole of permeating water, and many water courses communicate the internal delivery port of installing the water injection valve of handle, and the water injection valve is provided with inlet channel, intake duct and reset spring.

Above-mentioned this kind of current rock drill handle body can be used for controlling the rock drill and open and stop and the air leg is flexible, but when the rock drill closed the operation, because of compressed air can not the quick discharge in the handle body, leads to the water injection valve to close rapidly, still has partial water along the water needle entering rock drill after the rock drill stopped to move promptly, leads to the inside spare part corrosion of rock drill.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the main technical problem of providing a rock drill handle body which has simple structure and convenient use, can ensure that a water injection valve can be quickly closed after the rock drill stops running, and avoids water from continuously flowing into the interior of the rock drill to cause rust of parts.

In order to solve the technical problems, the utility model provides the following technical scheme:

a handle body for a rock drill comprises a handle body main body, wherein a water injection valve installation cavity and an operating valve installation cavity are formed in the handle body main body, a water injection valve is installed in the water injection valve installation cavity and communicated with a water needle, an operating valve is installed in the operating valve installation cavity, one end of the operating valve extends to the outer side of the handle body main body and is provided with an operating handle, a first pore passage, a second pore passage, a third pore passage, a fourth pore passage for supplying air to the rock drill and a water inlet pore passage for supplying water to the rock drill are formed in the handle body main body; the first pore passage is communicated with the third pore passage, the first pore passage is communicated with the operating valve installation cavity, and the third pore passage is communicated with the external atmosphere; the second pore passage is communicated with the water injection valve installation cavity and used for conveying compressed air to drive the water injection valve to open.

The following is a further optimization of the above technical solution of the present invention:

when the rock drill is in a working state, the control valve main body rotates until the first air supply hole is communicated with a fourth channel on the handle body to form an air inlet pipeline; when the rock drill stops operating, the operating valve main body rotates until the operating valve groove is in butt joint with the first pore channel and the second pore channel, and gas in the rock drill is quickly discharged through an exhaust pipeline formed by the second pore channel, the first pore channel and the third pore channel.

Further optimization: the handle body is provided with an air pipe installation part, an air pipe elbow used for conveying compressed air is installed in the air pipe installation part, and the air pipe elbow is communicated with an air inlet counter bore in the operating valve.

Further optimization: the handle body is provided with a water pipe installation part, a water pipe elbow used for conveying water is installed in the water pipe installation part, and the water pipe elbow is communicated with the water inlet pore passage.

Further optimization: the water injection valve comprises a water injection valve body, a water injection valve core is movably arranged in the water injection valve body, a spring cover is installed at the end part of the water injection valve body, a spring is installed between the spring cover and the water injection valve core, and a water injection hole communicated with a water needle is formed in the bottom of the water injection valve body.

Further optimization: when the rock drill works, compressed air enters the air inlet channel from the second channel to push the water injection valve core to move forwards, the water delivery channel is exposed, and water enters the water injection valve body through the water delivery channel and enters the water needle through the water injection hole at the bottom of the water injection valve body; when the rock drill stops running, the water injection valve core seals the water delivery pore passage.

Further optimization: the operating valve body is also provided with a second air supply hole which is communicated with a second pore passage on the handle body when the rock drill is in a working state.

Further optimization: the operating valve body is also provided with a crescent groove which is connected with the second air supply hole.

Further optimization: the trachea elbow is arranged in the trachea nut through a trachea elbow snap ring, and the trachea nut is connected with the trachea installation part of the handle body through a thread structure.

Further optimization: the water pipe elbow is fixed in the water pipe nut through the water pipe elbow snap ring, and the water pipe nut is connected with the water pipe installation part of the handle body main body through a threaded structure.

In traditional handle body, there is not the exhaust pipe, in the handle body residual compressed air slowly to the atmosphere, through this scheme, can exhaust fast.

By adopting the technical scheme, the rock drill is ingenious in conception and reasonable in structure, the rock drill and the water injection valve can be synchronously controlled to be opened through the control valve so as to realize synchronous operation, the rock drill can be controlled to be closed through the control valve, after the rock drill stops working, the water injection valve can be quickly decompressed through the control valve, compressed air in the water injection valve is quickly discharged, the water injection valve can be quickly closed, the automation degree is high, the phenomenon that redundant water enters the interior of the rock drill to cause corrosion of parts due to the fact that the water injection valve is not closed in time is avoided, the whole structure is simple, the rock drill is convenient to use, and the service life of the rock drill can be greatly prolonged.

The utility model is further illustrated with reference to the following figures and examples.

Drawings

FIG. 1 is a cross-sectional view of the general construction of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a main body of the pilot valve in an embodiment of the utility model;

FIG. 3 is a schematic structural view of an operating valve in an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is a cross-sectional view taken along line D-D of FIG. 3;

FIG. 6 is a schematic structural view of a main body of a handle according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 2;

fig. 9 is a schematic structural view of the water delivery channel in the embodiment of the present invention when opened.

In the figure: 1-operating a valve; 101-a pilot valve body; 102-a mounting end; 103-air inlet counter bore; 2-a gas pipe elbow; 3-water pipe elbow; 4-a handle body; 5-a spring; 6-a water injection valve; 61-water injection valve core; 62-an air inlet cavity; 63-a water inlet cavity; 7-a rubber mat; 8-water injection; 9-a spring cover; 10-a steering handle; 11-a tracheal nut; 12-a tracheal elbow snap ring; 13-water tube nut; 14-water pipe elbow snap ring; 15-a fastening pin; 16-hexagonal thin nuts; 17-a spring washer; 18-a water injection valve body; 19-a water injection valve installation cavity; 20-operating the valve installation cavity; 21-water pipe installation cavity; a-a first bore; b-a second bore; c-a third porthole; d-a water inlet channel; e-a first gas supply hole; f-a fourth porthole; g-a second gas supply hole; h-crescent groove; i-operating the valve recess; j-an air inlet duct; k-water conveying pore canal.

Detailed Description

Example (b): as shown in fig. 1 to 9, a rock drill shank comprises a shank body 4, wherein the shank body 4 is provided with a water injection valve installation cavity 19 and an operating valve installation cavity 20, a water injection valve 6 is installed in the water injection valve installation cavity 19, an operating valve 1 is installed in the operating valve installation cavity 20, and one end of the operating valve 1 extends to the outer side of the shank body 4 and is provided with an operating handle 10.

A first porthole a, a second porthole b, a third porthole c, a fourth porthole f for supplying air to the rock drill and a water inlet porthole d for supplying water to the rock drill are formed in the shank body 4.

The first hole channel a is communicated with the third hole channel c, and the first hole channel a and the third hole channel c are vertically arranged and communicated with each other.

The end of the first port a away from the third port c is communicated with the pilot valve mounting chamber 20, and the end of the third port c away from the first port a penetrates through the pilot valve main body 101 and is communicated with the external atmosphere.

The second hole passage b is communicated with the water injection valve installation cavity 19; the high-pressure gas in the second hole b is delivered into the water injection valve 6 to control the opening of the water injection valve 6.

As shown in fig. 1-2; an air pipe installation part is arranged on the handle body 4, and an air pipe elbow 2 used for conveying compressed air is installed in the air pipe installation part.

The trachea installation department sets up at the inlet end of operating valve installation cavity 20, and the trachea installation department communicates with operating valve installation cavity 20.

One end of the air pipe elbow 2 is fixedly arranged at an air pipe installation part on the handle body main body 4 through an air pipe installation component.

Trachea installation component includes trachea nut 11, and the one end of trachea elbow 2 is installed in trachea nut 11, and trachea elbow 2 is close to the one end of operating valve installation cavity 20 and extends to the outside of trachea nut 11 and fixedly connected with trachea elbow snap ring 12.

The air pipe elbow 2 is arranged in the air pipe nut 11 through an air pipe elbow clamping ring 12.

The abutting joint of the air pipe elbow snap ring 12 and the air pipe nut 11 can be used for limiting the position of the air pipe nut 11 on the air pipe elbow 2.

The connection part of the inner surface of the tracheal nut 11 and the tracheal elbow 2 adopts a sealing ring for sealing connection.

The outer surface of the tracheal nut 11 is provided with an external thread, the inner surface of the tracheal mounting part is provided with an internal thread, the external thread on the tracheal nut 11 is connected with the internal thread through a thread, and the tracheal nut 11 is connected with the tracheal mounting part of the handle body 4 through a thread structure.

Design like this, trachea elbow 2 is fixed in trachea nut 11 through trachea elbow snap ring 12 behind trachea elbow 11 cooperation, avoids trachea elbow 2 to deviate from in trachea nut 11.

Meanwhile, the air pipe nut 11 is connected with the handle body 4 through a thread structure, so that the air pipe elbow 2 can be installed on the handle body 4, and the air pipe elbow 2 is communicated with the air inlet end of the operating valve installation cavity 20.

As shown in fig. 1-2; the operating valve 1 has two working positions, which are respectively an open working position and a closed working position, when rotating in the operating valve installation cavity 20.

The operating handle 10 controls the operating valve 1 to switch between an open operating position and a closed operating position.

When the operating valve 1 is at the opening working position, the operating valve 1 controls the second channel b to be communicated with the air pipe elbow 2, and at the moment, high-pressure air in the air pipe elbow 2 can enter the second channel b through the operating valve 1, and the second channel b is used for guiding the high-pressure air to enter the water injection valve 6 so as to control the water injection valve 6 to be opened.

When the operating valve 1 is at the closing working position, the operating valve 1 controls the second pore passage b to be communicated with the first pore passage a and controls the second pore passage b to be disconnected with the air pipe elbow 2, and at the moment, high-pressure air in the air pipe elbow 2 cannot enter the second pore passage b.

And high-pressure gas in the water injection valve 6 is guided to the first pore canal a through the second pore canal b, and the high-pressure gas in the first pore canal a is discharged into the atmosphere through the third pore canal c, so that the water injection valve 6 is quickly released, the water injection valve 6 loses the effect of the high-pressure gas at the moment, and the water injection valve 6 automatically resets to a closed state.

As shown in fig. 1 to 5, the operating valve 1 includes an operating valve main body 101 and a mounting end 102 integrally connected with each other, the operating valve main body 101 is mounted in the operating valve mounting chamber 20, the mounting end 102 is located at an end of the operating valve main body 101 away from the air pipe elbow 2, and the mounting end 102 penetrates the handle main body 4 and is connected with the operating handle 10.

A plurality of sealing grooves are formed in the outer surface of the operating valve main body 101, sealing rings are installed in the sealing grooves, and the outer surface of the operating valve main body 101 is connected with the inner surface of the operating valve installation cavity 20 in a sealing mode through the sealing rings.

An air inlet counterbore 103 is formed in the operating valve main body 101, and one end of the air inlet counterbore 103, which is far away from the mounting end 102, penetrates through the operating valve main body 101 and is communicated with the air pipe elbow 2.

The high pressure gas in the gas pipe elbow 2 can be delivered into the gas inlet counterbore 103.

An operation valve recess i is formed in an outer surface of the operation valve body 101 at a position corresponding to the first and second port holes a and b, and a first air supply hole e is formed in the operation valve recess i.

The width of the pilot valve groove i is greater than or equal to the width of the communication part of the first and second ports a and b and the pilot valve installation chamber 20.

One end of a fourth hole channel f on the handle body is communicated with the operating valve installation cavity 20, and the other end of the fourth hole channel f is communicated with an air inlet of the rock drill.

The opening position of the first air supply hole e on the outer surface of the valve body 101 corresponds to the position of the fourth orifice f.

The first gas supply hole e is communicated with the gas inlet counterbore 103, and high-pressure gas in the gas inlet counterbore 103 can enter the first gas supply hole e.

When the operating valve 1 is at the opening working position, the first air supply hole e on the operating valve 1 is in butt joint with the fourth hole f, at the moment, the first air supply hole e and the fourth hole f form an air inlet pipeline, and then high-pressure air in the air pipe elbow 2 is conveyed into the rock drill through the air inlet counter bore 103, the first air supply hole e and the fourth hole f to drive the rock drill to work.

When the operating valve 1 is at the closed working position, the first air supply hole e and the fourth hole f on the operating valve 1 are completely staggered, so that compressed air entering the air pipe elbow 2 cannot enter the fourth hole f, and cannot enter the rock drilling machine, and the rock drilling machine stops working.

At this time, the operating valve groove i on the operating valve 1 rotates to be in butt joint with the first pore passage a and the second pore passage b, the first pore passage a is communicated with the second pore passage b through the operating valve groove i, and the second pore passage b, the first pore passage a and the third pore passage c form an exhaust pipeline.

And the third hole channel c is directly communicated with the external atmosphere, so that the gas in the rock drill is quickly discharged into the atmosphere through the second hole channel b, the first hole channel a and the third hole channel c.

The control valve body 101 is further provided with a second air supply hole g at a position corresponding to the opening position of the second port b.

When the operating valve 1 is in the open working position, the second gas supply hole g on the operating valve 1 is connected with the second hole channel b, and at this time, the high-pressure gas in the gas pipe elbow 2 can enter the second hole channel b through the gas inlet counter bore 103 and the second gas supply hole g, and the second hole channel b introduces the high-pressure gas into the water injection valve 6 to control the opening of the water injection valve 6.

When the operating valve 1 is in the closed working position, the operating valve groove i on the operating valve 1 is butted with the first port a and the second port b, and the second air supply hole g is completely staggered with the second port b.

A crescent groove h is further formed in the outer surface of the control valve body 101 at a position close to the second air supply hole g, and the crescent groove h is connected with the second air supply hole g.

The high-pressure gas in the second gas supply hole g can enter the crescent groove h.

The crescent grooves h and the operating valve grooves i are respectively arranged along the outer surface of the operating valve main body 101 in an annular shape at intervals.

Due to the design, the operating valve groove i and the crescent groove h are respectively arranged along the outer surface of the operating valve main body 101 at intervals in an annular manner, so that when the operating valve main body 101 is rotated, the operating valve groove i or the crescent groove h can be sequentially rotated to the position close to the second pore passage b.

When the operating valve 1 is in the open working position, the crescent groove h on the operating valve 1 is communicated with the second pore passage b, at this time, the high-pressure gas in the air pipe elbow 2 can enter the second pore passage b through the air inlet counter bore 103, the second air supply hole g and the crescent groove h, and the second pore passage b introduces the high-pressure gas into the water injection valve 6 to control the opening of the water injection valve 6.

And when the operating valve 1 is at the opening working position, the first air supply hole e on the operating valve 1 is in butt joint with the fourth hole f, so that the water injection valve 6 and the rock drill can be synchronously started, and the use is convenient.

When the operating valve 1 is at a closing working position, the operating valve groove i on the operating valve 1 is in butt joint with the first pore passage a and the second pore passage b, at the moment, the second pore passage b is communicated with the first pore passage a through the operating valve groove i, and then high-pressure gas in the water injection valve 6 is discharged into the atmosphere through the second pore passage b, the operating valve groove i, the first pore passage a and the third pore passage c, so that rapid pressure relief of the water injection valve 6 is realized, at the moment, the water injection valve 6 loses the effect of the high-pressure gas, and the water injection valve 6 is automatically closed.

And when the operating valve 1 is at the closed working position, the first air supply hole e and the fourth hole f on the operating valve 1 are completely staggered, so that the compressed air entering the air pipe elbow 2 cannot enter the fourth hole f, and cannot enter the rock drill, and the rock drill stops working.

The cross section of the crescent groove h is in a crescent shape, and the air inlet opening degree of the crescent groove h when the crescent groove h is communicated with the second pore passage b can be adjusted.

When the crescent groove h is completely butted with the second hole passage b, the second air supply hole g is completely communicated with the second hole passage b, and the air inlet amount is maximum.

When the crescent groove h and the second pore passage b are staggered or can not be completely butted, the second air supply hole g and the second pore passage b can not be completely communicated, and the air inflow can be adjusted by adjusting the positions of the crescent groove h and the second pore passage b, so that the novel gas supply device is convenient to use.

As shown in fig. 1-2; the operating handle 10 is fixedly connected with the mounting end 102 of the operating valve 1 through a fixing and connecting assembly, the fixing and connecting assembly comprises a fastening pin 15, and the fastening pin 15 penetrates through the operating handle 10 and the mounting end 102 to connect the operating handle 10 and the mounting end 102.

One end of the fastening pin 15 is sleeved with a spring washer 17, the spring washer 17 is abutted with the outer surface of the operating handle 10, and the other side of the fastening pin 15, which is positioned on the spring washer 17, is in threaded connection with a hexagonal thin nut 16.

The operating handle 10 is connected with the mounting end 102 of the operating valve 1 through a fastening pin 15, a spring washer 17 and a hexagonal thin nut 16, and the operating valve 1 can be ensured to be fixed in the operating valve mounting cavity 20 in the axial direction.

As shown in fig. 1-2; the handle body main part 4 is provided with a water pipe installation part, a water pipe elbow 3 used for conveying water is installed in the water pipe installation part, and the water pipe elbow 3 is communicated with a water inlet pore passage d.

The water pipe mounting portion includes a water pipe mounting cavity 21 opened on the handle body 4 and located at one side of the water filling valve mounting cavity 19.

The water pipe installation cavity 21 is communicated with the water inlet duct d, the other end of the water inlet duct d is communicated with the water injection valve 6, and the water pipe installation cavity 21 is communicated with the water injection valve 6 through the water inlet duct d.

The water pipe elbow 3 is communicated with the water injection valve 6 through a water pipe installation cavity 21 and a water inlet channel d.

One end of the water pipe elbow 3 is fixedly arranged in the water pipe installation cavity 21 through a water pipe installation component.

The water pipe installation component comprises a water pipe nut 13 sleeved on the water pipe elbow 3, and the joint of the inner surface of the water pipe nut 13 and the water pipe elbow 3 is in sealing connection by a sealing ring.

One end of the water pipe elbow 3 close to the water pipe mounting cavity 21 extends to the outside of the water pipe nut 13 and is fixedly connected with a water pipe elbow clamping ring 14.

The water pipe elbow 3 is fixed in the water pipe nut 13 through the water pipe elbow snap ring 14.

Abutting the water pipe elbow retainer ring 14 with the water pipe nut 13 can be used to limit the axial position of the water pipe elbow 3.

The outer surface of the water pipe nut 13 is provided with external threads.

Offer on the internal surface of water pipe installation cavity 21 with the internal thread that external screw thread fit used, external screw thread and this internal thread threaded connection on the water pipe nut 13 can realize that water pipe nut 13 is connected with the water pipe installation department of handle body main part 4 through the helicitic texture.

By the design, after the water pipe elbow 3 is matched with the water pipe nut 13, the water pipe elbow 3 is fixed in the water pipe nut 13 through the water pipe elbow snap ring 14, and the water pipe elbow 3 is prevented from being separated from the water pipe nut 13.

Then the water pipe nut 13 is connected with the handle body 4 through a thread structure, so that the water pipe elbow 3 can be installed on the handle body 4, and the water pipe elbow 3 is communicated with the water pipe installation cavity 21.

As shown in fig. 1-2 and 8-9, the water injection valve 6 includes a water injection valve body 18 installed in a water injection valve installation cavity 19, a water injection valve core 61 is movably disposed in the water injection valve body 18, and the water injection valve core 61 is used for partitioning an inner cavity of the water injection valve body 18 into an air inlet cavity 62 and an air inlet cavity 63.

A spring return assembly is fixedly mounted at the rear end part of the water filling valve core 61 in the water filling valve body 18, and the spring return assembly comprises a spring 5 and a spring cover 9 which are mounted at the rear part of the water filling valve core 61.

The spring cover 9 is fixedly arranged at the end part of the water injection valve body 18, and two ends of the spring 5 are respectively abutted with the spring cover 9 and the water injection valve core 61.

The spring 5 outputs elastic force to push the water injection valve core 61 to always keep the force moving towards one side close to the water inlet cavity 63.

In this embodiment, the spring cover 9 can be fixedly mounted in the water injection valve body 18 by means of a spring washer and a threaded connection.

The water injection valve body 18 is provided with an air inlet hole j communicated with the second hole b and a water delivery hole k communicated with the water inlet hole d.

The other end of the air intake port j communicates with an air intake chamber 62 in the water injection valve body 18.

The high-pressure gas in the second port b is delivered to the gas inlet chamber 62 of the water filling valve 6 through the gas inlet port j, and the high-pressure gas in the gas inlet chamber 62 pushes the water filling valve core 61 to move towards the direction close to the spring cover 9, and the spring 5 is compressed as shown in fig. 9.

The other end of the water delivery hole k is communicated with the water inlet cavity 63 in the water injection valve body 18.

When high-pressure gas does not exist in the air inlet cavity 62, the spring 5 outputs elastic force to push the water injection valve core 61 to move towards one side close to the water inlet cavity 63, at the moment, the outer surface of the water injection valve core 61 can block a water delivery pore channel k as shown in fig. 8, and the water delivery pore channel k is not communicated with the water inlet cavity 63.

When high-pressure gas exists in the air inlet cavity 62, the high-pressure gas pushes the water injection valve core 61 to move towards the direction close to the spring cover 9, at the moment, the water injection valve core 61 moves towards the direction close to the spring cover 9 for a certain distance, and then the water injection valve core 61 is staggered with the water delivery pore canal k, so that the water delivery pore canal k is not sealed and shielded as shown in fig. 9, meanwhile, the water inlet pore canal d is communicated with the water delivery pore canal k, and water entering the water inlet pore canal d through the water pipe elbow 3 enters the water inlet cavity 63 through the water inlet pore canal d and the water delivery pore canal k.

Therefore, the high-pressure gas in the air inlet cavity 62 and the output elastic force of the spring 5 can be used for driving the water injection valve core 61 to move in the water injection valve body 18 so as to realize the on-off control of the water delivery hole k and the water inlet cavity 63.

As shown in fig. 8-9, a water needle 8 is fixedly mounted on the handle body 4 near the water inlet cavity 63.

The bottom of the water injection valve body 18 is provided with a water injection hole communicated with the water needle 8, water in the water inlet cavity 63 flows into the water needle 8 through the water injection hole, and then the water finally enters the rock drilling machine through the guide of the water needle 8 to wash the broken rock powder.

The position department that is close to the water injection hole in the intake antrum 63 is provided with cushion 7, and when water injection case 61 moved to the direction that is close to cushion 7, the tip and the cushion 7 top of water injection case 61 connect.

As shown in fig. 1-9, when in use, the other end of the air pipe elbow 2 is communicated with a compressed air source, the other end of the water pipe elbow 3 is communicated with a high-pressure water source, at the moment, the compressed air enters the handle body 4 through the air pipe elbow 2, and the high-pressure water enters the handle body 4 through the water pipe elbow 3.

When the rock drill needs to be started, the operating handle 10 is pulled to drive the operating valve 1 to rotate to the opening working position, at the moment, the first air supply hole e in the operating valve main body 101 is butted with the fourth hole f in the handle body 4, and the crescent groove h is butted with the second hole b.

Then the compressed air in the air pipe elbow 2 enters the air inlet counterbore 103, at the moment, a part of the compressed air in the air inlet counterbore 103 is conveyed into the rock drill through the first air supply hole e and the fourth hole f to drive the rock drill to work, a part of the compressed air enters the second hole b through the second air supply hole g and the crescent groove h, and at the moment, the high-pressure air in the second hole b is conveyed into the air inlet cavity 62 of the water injection valve 6 through the air inlet hole j.

At this time, the air inlet chamber 62 is filled with compressed air, the compressed air pushes the water injection valve core 61 to move towards the direction close to the spring cover 9, the spring 5 is compressed, and meanwhile, the water injection valve core 61 is staggered with the water delivery pore passage k, so that the water delivery pore passage k is not sealed and shielded as shown in fig. 8, and at this time, the high-pressure water in the water pipe elbow 3 is conveyed into the water inlet chamber 63 of the water injection valve 6 through the water inlet pore passage d and the water delivery pore passage k.

The high pressure water in the inlet chamber 63 enters the water needle 8 and then is finally led into the rock drilling machine for flushing the broken rock powder by the guide of the water needle 8.

When the operation of the rock drilling machine needs to be stopped, the operating handle 10 is pulled to drive the operating valve 1 to rotate to a closed working position, at the moment, the operating valve groove i on the operating valve main body 101 is butted with the first pore channel a and the second pore channel b, and the first air supply hole e and the fourth pore channel f on the operating valve main body 101 are completely staggered, so that compressed air in the air pipe elbow 2 cannot enter the fourth pore channel f, and high-pressure air cannot enter the rock drilling machine.

At this time, the second duct b is communicated with the first duct a through the operation valve groove i, so that the high-pressure gas in the air inlet cavity 62 of the water injection valve 6 is discharged into the atmosphere through the second duct b, the operation valve groove i, the first duct a and the third duct c, and the rapid pressure relief of the water injection valve 6 is realized.

At this time, the water filling valve core 61 loses the function of high-pressure gas, the elastic force output by the spring 5 can push the water filling valve core 61 to move towards the direction close to the rubber mat 7, and after the water filling valve core 61 is tightly attached to the rubber mat 7, the water filling valve core 61 completely seals and blocks the water delivery hole k, which is shown in fig. 7.

At this time, the high-pressure water entering the water pipe elbow 3 cannot enter the water inlet cavity 63 of the water injection valve 6 through the water inlet hole channel d and the water delivery hole channel k, so that the high-pressure water cannot enter the rock drill through the water needle 8, the internal parts of the rock drill are finally prevented from being corroded by water, and the using effect is improved.

It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims.

Claims (10)

1. The utility model provides a handle body for rock drill, includes handle body main part (4), water injection valve installation cavity (19) and operating valve installation cavity (20) have been seted up on handle body main part (4), install water injection valve (6) in water injection valve installation cavity (19), water injection valve (6) and water needle (8) intercommunication, operating valve installation cavity (20) internally mounted has operating valve (1), the one end of operating valve (1) extends to the handle body main part (4) outside and installs and operate (10), its characterized in that: a first pore channel (a), a second pore channel (b), a third pore channel (c), a fourth pore channel (f) for supplying air to the rock drill and a water inlet pore channel (d) for supplying water to the rock drill are arranged in the handle body (4); the first pore passage (a) is communicated with the operating valve installation cavity (20), and the third pore passage (c) is communicated with the external atmosphere; the second hole (b) is communicated with the water injection valve installation cavity (19) and is used for conveying compressed air to drive the water injection valve (6) to be opened.

2. A shank body for a rock drill as claimed in claim 1, wherein: an operating valve groove (i) and a first air supply hole (e) are formed in the outer surface of the operating valve main body (101), and when the rock drill is in a working state, the operating valve main body (101) rotates until the first air supply hole (e) is communicated with a fourth pore channel (f) in the handle body (4) to form an air inlet pipeline; when the rock drill stops operating, the control valve main body (101) rotates until the control valve groove (i) is in butt joint with the first pore passage (a) and the second pore passage (b), and air in the rock drill is quickly discharged through an exhaust pipeline formed by the second pore passage (b), the first pore passage (a) and the third pore passage (c).

3. A shank body for a rock drill as claimed in claim 1, wherein: the handle body is characterized in that an air pipe installation part is arranged on the handle body main body (4), an air pipe elbow (2) used for conveying compressed air is installed in the air pipe installation part, and the air pipe elbow (2) is communicated with an air inlet counter bore (103) in the operating valve (1).

4. A shank body for a rock drill as claimed in claim 1, wherein: the handle body is characterized in that a water pipe installation part is arranged on the handle body (4), a water pipe elbow (3) used for conveying water is installed in the water pipe installation part, and the water pipe elbow (3) is communicated with the water inlet pore passage (d).

5. A shank body for a rock drill as claimed in claim 1, wherein: the water injection valve (6) comprises a water injection valve body (18), a water injection valve core (61) is movably arranged in the water injection valve body (18), a spring cover (9) is installed at the end part of the water injection valve body (18), a spring (5) is installed between the spring cover (9) and the water injection valve core (61), and a water injection hole communicated with a water needle (8) is formed in the bottom of the water injection valve body (18).

6. A shank body for a rock drill as claimed in claim 5, wherein: an air inlet pore channel (j) communicated with the second pore channel (b) and a water delivery pore channel (k) communicated with the water inlet pore channel (d) are formed in the water injection valve body (18), when the rock drill works, compressed air enters the air inlet pore channel (j) from the second pore channel (b) to push the water injection valve core (61) to move forwards, the water delivery pore channel (k) is exposed, and water enters the water injection valve body (18) through the water delivery pore channel (k) and enters the water needle (8) through a water injection hole in the bottom of the water injection valve body (18); when the rock drill stops running, the water injection valve core (61) seals the water conveying pore channel (k).

7. A shank body for a rock drill as claimed in claim 2, wherein: the operating valve body (101) is also provided with a second air supply hole (g), and when the rock drill is in a working state, the second air supply hole (g) is communicated with a second pore passage (b) on the handle body (4).

8. A shank body for a rock drill as claimed in claim 7, wherein: the operating valve main body (101) is also provided with a crescent groove (h), and the crescent groove (h) is connected with the second air supply hole (g).

9. A shank body for a rock drill as claimed in claim 3, wherein: the air pipe elbow (2) is installed in an air pipe nut (11) through an air pipe elbow clamping ring (12), and the air pipe nut (11) is connected with an air pipe installation part of the handle body main body (4) through a threaded structure.

10. A shank body for a rock drill as claimed in claim 4, wherein: the water pipe elbow (3) is fixed in the water pipe nut (13) through the water pipe elbow snap ring (14), and the water pipe nut (13) is connected with the water pipe installation part of the handle body main body (4) through a threaded structure.

Images