CN209145482U - A kind of impactor distribution bar and down-the-hole air hammer - Google Patents

Abstract

The utility model discloses a kind of impactor distribution bars, comprising: the body of rod offers in the first bar gas distribution channels in gas distribution channels and the second bar in the body of rod, is set as isolation part between gas distribution channels in gas distribution channels and the second bar in the first bar；The first end of the body of rod is provided with mounting base ear, offered on the bar wall of gas distribution channels section in the first bar on the body of rod two perhaps multiple first mutually staggered with offered on the bar wall of gas distribution channels section in the second bar on the vent hole body of rod one or two mutually stagger second with vent hole.The invention also discloses a kind of down-the-hole air hammers including the impactor distribution bar.By opening up gas distribution channels inside distribution bar, that is gas distribution channels in gas distribution channels and the second bar in the first bar, increased in the case where compressing down-the-hole air hammer overall volume gas distribution channels aperture in other words caliber so that high pressure gas conveyed in the gas distribution channels it is more smooth.

Description

A kind of impactor distribution bar and down-the-hole air hammer

Technical field

The utility model relates to engineering driller field of mechanical technique, in particular to a kind of impactor distribution bar, and including The down-the-hole air hammer of the impactor distribution bar.

Background technique

Down-the-hole air hammer is widely used in quick-fried in the engineering constructions such as mine, power station, harbour, road and tunnel Broken project, for digging blasting boreholes etc..Down-the-hole air hammer is to enter punching by compressor offer high pressure water or compressed air Hit in device, driving be located at impactor inside piston generate high speed reciprocating motion, the reciprocating motion of piston and hit again and again Drill bit realizes broken rock by the carbide button of chisel edge, and produced rock slag is logical by the deslagging of the impactor in rock break-off process Road is by high pressure water or high pressure gas tap bottom.

Currently, mainly using High air-pressure DTH hammer, conveying high-pressure wind during impact is punchinged rushes drill bit Hit the discharges such as crushed rocks and the dust of generation drilling.It is existing as engineering construction rate request is accelerated, drilling efficiency requires to increase With the presence of some apparent defects of High air-pressure DTH hammer: directly encircled a city wind pressure channel by outer shell and piston, high pressure gas Utilization rate it is not high；Very strict to the conveyance conduit requirement of high wind pressure, once air hose fracture occur or splitting, impactor is needed It to stop working at once.

In consideration of it, overcome defect present in the above-mentioned prior art, invent that a kind of distribution effect is good, target efficiency is high rushes Device distribution bar is hit, is this field urgent problem to be solved.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of impactor distribution bars, can greatly improve distribution effect Fruit, the utilization efficiency for improving high pressure gas.To solve the above-mentioned problems, a kind of impactor distribution bar provided by the utility model, And the down-the-hole air hammer including the impactor distribution bar, its technical solution is as follows:

A kind of impactor distribution bar of the utility model is used for high pressure gas down-the-hole air hammer, comprising: the body of rod, the bar Offer in the first bar mutually completely cut off gas distribution channels in gas distribution channels and the second bar in vivo, in first bar gas distribution channels with The radial aperture of gas distribution channels is identical in second bar, gas distribution channels and gas distribution channels in second bar in first bar Between be set as isolation part.

The first end of the body of rod is provided with the mounting base ear, and the mounting base ear is cyclic structure or multiple edges Radially-protruding projection cube structure；Offer two or more on the body of rod on the bar wall of gas distribution channels section in first bar A first mutually staggered matches vent hole, offers one on the bar wall of gas distribution channels section in second bar on the body of rod Or two second mutually staggered are with vent hole.

The distribution bar of the utility model belongs to ground-breaking innovation and creation in down-the-hole air hammer field, by distribution bar Inside opens up gas distribution channels, i.e. gas distribution channels in gas distribution channels and the second bar in the first bar, in compression down-the-hole air hammer entirety body The aperture of gas distribution channels or perhaps caliber are increased in the case where product, so that high pressure gas conveys more in the gas distribution channels It is smooth；And by opening up in the first bar gas distribution channels in gas distribution channels and the second bar, so that gas distribution channels and in the first bar The volume of other of gas distribution channels and down-the-hole air hammer component surround in two bars the first air distribution cavity and the second air distribution cavity is bigger, i.e., The aeration quantity of the two air distribution cavities is improved, to increase the striking capabilities of down-the-hole air hammer.

As the improvement of the above-mentioned impactor distribution bar of the utility model, the axial length of gas distribution channels is in first bar 3-8 times of gas distribution channels axial length in second bar；Gas distribution channels axial length is isolation part at any time in second bar 2-5 times of axial length.

Further, described first square hole is projected as in vertical plane with vent hole with vent hole and described second Either round hole or slotted eye, described first with vent hole and described second with the hole length of vent hole in the axial direction be described The 1/3-2/3 in gas distribution channels radial direction aperture in first bar.

A kind of down-the-hole air hammer of the utility model, the down-the-hole air hammer include above-mentioned impactor distribution bar.

Further, down-the-hole air hammer includes: outer shell, piston, connector, control valve and drill bit, and the piston is set in institute It states in outer shell, the connector and the drill bit are respectively arranged on the both ends of the outer shell, and the control valve is mounted on described connect In head, and the control valve is connected with the connector piston.

The high pressure gas down-the-hole air hammer further includes distribution bar, and the first end of the distribution bar is fixed to be inlaid in described connect In the first end of head, the second end of the distribution bar is set in the piston；The connector, the control valve, the distribution The gas distribution channels being mutually communicated controllablely are provided on bar and the piston.

The high pressure gas down-the-hole air hammer of the utility model passes through setting compared with down-the-hole air hammer in the prior art Distribution bar and controllable the gas distribution channels being mutually communicated, external high pressure gas are transported to the high pressure gas down-the-hole air hammer Afterwards, it is entered inside impactor by gas distribution channels, high-low pressure environment is alternatively formed in two end regions of piston, to drive work Plug is moved back and forth to hit drill bit, and hitting power passes to rock by drill bit, to realize broken rock；On the other hand, pass through distribution bar Directly with piston distribution, gas distribution channels caliber is larger, is not easy to be blocked and trouble of shutdown occurs.

The utility model is also realized through the setting of distribution bar by setting distribution bar instead of in conventional impactor needs Cylinder then lined or inner casing add the supporting structure of nylon tube, and the setting of distribution bar keeps entire air-flow simpler smooth, meanwhile, match Gas bar and piston and drill bit form the second air distribution cavity, eliminate the design of conventional drill centre bore, and drill bit intensity greatly promotes, Service life is also substantially improved, distribution bar use front and back damping flexible forms, ensure that piston during up and down motion with The cooperation of distribution bar is more smooth.

As the improvement of the above-mentioned high pressure gas down-the-hole air hammer of the utility model, the control valve includes control valve core, control Valve seat processed and control spring, the control valve seat is fixedly mounted in the connector, the first end of the control valve core with it is described Pressurized gas inlet piston on connector is connected, and the second end of the control valve core is sleeved in the control valve seat, the control Spring processed is arranged in the control valve core and the control valve seat, and controls described in the both ends difference contact of the control spring The inner end of spool and the control valve seat.

In this way, stretching by control spring-compressed or bullet, so that the gas distribution channels of joint turn on or off, work as connector When the gas distribution channels at place are opened, external high pressure gas is transported in high pressure gas down-the-hole air hammer, makes the piston in impactor Front end air pressure increases and the first end that piston top rises to close to connector is controlled spring for control when air pressure increases to certain value Spool processed is jacked to closing gas distribution channels；Meanwhile piston pressure completely in the first end of connector, impactor discharges and makes to live Plug is fallen.In this way, circulation manipulates and piston is made to hit drill bit again and again.

As the further improvement of the above-mentioned high pressure gas down-the-hole air hammer of the utility model, in the first end of the distribution bar It is provided with mounting base ear, the two sides of the mounting base ear are provided with distribution bar resilient cushion, the distribution bar resilient cushion of two sides It clamps the mounting base ear distribution bar is fixedly mounted in the first end of the connector.In the first end of the connector It is additionally provided with adjusting pad and retaining ring, the retaining ring is mounted in the first end of the connector, and the adjusting pad setting is matched described Between gas bar resilient cushion and the retaining ring.

In this way, distribution bar can be firmly mounted in the first end of connector, so that gas conveying is more unobstructed, and due to Gas distribution channels unobstructed and stablize, so that impactor stability during the work time and balance have great raising.

As the further improvement of the above-mentioned high pressure gas down-the-hole air hammer of the utility model, the high pressure gas down-the-hole punching Hitting device further includes spacer and adapter, and the spacer is set in the outer cylinder interior, and the adapter is arranged in the outer cylinder end Portion, a part of the adapter are inlaid in the outer shell, are provided with baffle ring between the spacer and the adapter；It is described Drill bit is mounted on the adapter by spline.In this way, by setting spacer, so that piston exists in upper and lower operation and drill bit Guiding performance is more preferable when impact rock, to improve the stability of rock drilling.

Further, the control valve seat is provided at least two control valve gas via-holes, and the middle section of the distribution bar is opened Match vent hole equipped at least two, is provided with gas booking groove between the second end and the piston inner wall of the distribution bar.The height Pressure gas access, the control valve gas via-hole, described be interconnected with vent hole and gas booking groove form the gas distribution channels.This Sample, gas distribution channels need not move through the gap between outer shell and control valve seat etc., the aperture increases of gas distribution channels, so that distribution is more Add it is unobstructed so that the working efficiency of impactor greatly improves.

Further, the outer shell, the piston, the connector and the distribution bar surround the first air distribution cavity, described outer Cylinder, the piston, the drill bit, the distribution bar and the spacer surround the second air distribution cavity.The high pressure gas of outside conveying is logical The gas distribution channels are crossed alternately to be full of second air distribution cavity and compress first air distribution cavity and drive the piston in institute It states in outer shell and moves back and forth.

Further, the drill bit is solid bit, and the deslagging through-hole of perforation drill bit side wall is offered on the drill bit.

Further, the shoulder of the connector is provided with wear-resisting alloy block.

Further, the head of the control valve core is coated with wearable elastic pad；Alternatively, the shoulder of the control valve core is set It is equipped with wear washer.

The working principle of the utility model high pressure gas down-the-hole air hammer is:

The high pressure gas that external high pressure gas source provides is transported to this down-the-hole air hammer by the pressurized gas inlet of connector Interior, high pressure gas is washed control valve open and is promptly reached in the second air distribution cavity along gas distribution channels, rapid in the second air distribution cavity Accumulation；As the second distribution intracavity gas increases, air pressure increases, to push piston to rise, even if piston is constantly close to control Valve seat processed, piston constantly compress the first air distribution cavity during rising, and the air pressure of the first air distribution cavity can constantly increase, and work as work When being raised to predetermined value beyond the Great Wall, so that the second distribution cavity pressure discharges, piston is matched in self gravity and first for piston and spacer disengaging It falls rapidly under the action of the powerful air pressure of air cavity and hits drill bit.

External high pressure gas continues to be transported in down-the-hole air hammer after piston is fallen, and repeats mentioned-above mistake Journey, such piston continuously shuttling movement continuously hit drill bit, realize rock-breaking drilling.

The beneficial effect of high pressure gas down-the-hole air hammer provided by the utility model is:

By opening up gas distribution channels inside distribution bar, i.e. gas distribution channels in gas distribution channels and the second bar in the first bar, Aperture or perhaps the caliber that gas distribution channels are increased in the case where compression down-the-hole air hammer overall volume, so that high pressure gas exists It is conveyed in the gas distribution channels more smooth；And by opening up in the first bar gas distribution channels in gas distribution channels and the second bar, so that The first air distribution cavity and that other of gas distribution channels and down-the-hole air hammer component surround in gas distribution channels and the second bar in first bar The volume of two air distribution cavities is bigger, that is, improves the aeration quantity of the two air distribution cavities, to increase the strike energy of down-the-hole air hammer Power.

The height is transported to by setting distribution bar and controllable the gas distribution channels being mutually communicated, external high pressure gas It calms the anger after body down-the-hole air hammer, is entered inside impactor by gas distribution channels, be alternatively formed height in two end regions of piston Pressure ring border, to drive reciprocating motion of the pistons to hit drill bit, hitting power passes to rock by drill bit, to realize broken rock.Separately On the one hand, by distribution bar directly with piston distribution, gas distribution channels caliber is larger, is not easy to be blocked and trouble of shutdown occurs.

By be arranged distribution bar, eliminate conventional impact device have to setting inner casing lining nested structure so that structure into One step simplifies, and the probability of card machine in the impactor course of work is reduced, to provide its working efficiency.

It is stretched by control spring-compressed or bullet, so that the gas distribution channels of joint turn on or off, when joint When gas distribution channels are opened, external high pressure gas is transported in high pressure gas down-the-hole air hammer, makes the piston nose in impactor Air pressure increases and the first end that piston top rises to close to connector is controlled spring for control valve when air pressure increases to certain value Core is jacked to closing gas distribution channels；Meanwhile piston pressure completely in the first end of connector, impactor discharges and falls piston Under.In this way, circulation manipulates and piston is made to hit drill bit again and again.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is the structural schematic diagram of one impactor distribution bar of the utility model embodiment；

Fig. 2 is two down-the-hole air hammer structural schematic diagram of the utility model embodiment；

Fig. 3 is two down-the-hole air hammer partial structural diagram of the utility model embodiment；

Fig. 4 is two down-the-hole air hammer another kind status architecture schematic diagram of the utility model embodiment.

It is marked in figure as follows:

1- outer shell；2- piston；3- connector；The first end of 31- connector；32- pressurized gas inlet；33- wear-resisting alloy block；4- Control valve；41- control valve core；42- control valve seat；43- controls spring；411- wearable elastic pad 411；412- wear washer； 420- control valve gas via-hole；5- drill bit；51- deslagging through-hole；The 6- body of rod；Gas distribution channels in the first bar of 61-；In the second bar of 62- Gas distribution channels；63- isolation part；64- mounting base ear；65- first matches vent hole；66- second matches vent hole；7- gas distribution channels；8- Distribution bar resilient cushion；9- adjusting pad；10- retaining ring；11- spacer；12- adapter；13- baffle ring；The first air distribution cavity of 101-；102- Two air distribution cavities.

Specific embodiment

In order to make those skilled in the art more fully understand the technical scheme in the embodiment of the utility model, and make this reality Can be more obvious and easy to understand with novel above objects, features, and advantages, with reference to the accompanying drawing to the specific reality of the utility model The mode of applying is further described.

It should be noted that being used to help understand the utility model for the explanation of these embodiments, but not Constitute the restriction to the utility model.In addition, technology involved in the various embodiments of the present invention described below Feature can be combined with each other as long as they do not conflict with each other.

Embodiment one

Referring to FIG. 1, a kind of impactor distribution bar, it to be used for high pressure gas down-the-hole air hammer, comprising: the body of rod 6, in the body of rod 6 Offer in the first bar mutually completely cut off gas distribution channels 62 in gas distribution channels 61 and the second bar, gas distribution channels 61 and in the first bar The radial aperture of gas distribution channels 62 is identical in two bars, is arranged between gas distribution channels 62 in gas distribution channels 61 and the second bar in the first bar For isolation part (63).

The first end of the body of rod 6 is provided with mounting base ear 64, and mounting base ear 64 is cyclic structure or multiple radially stretches Projection cube structure out；It offers two on the body of rod 6 on 61 sections of gas distribution channels of bar wall in the first bar or multiple mutually staggers First match vent hole 65, offer one or two on the body of rod 6 on 62 sections of gas distribution channels of bar wall in the second bar mutually Second to be staggered matches vent hole 66.

Preferably, in the first bar the axial length of gas distribution channels 61 be 62 axial length of gas distribution channels in the second bar 3-8 Times；62 axial length of gas distribution channels is 2-5 times of 63 axial length of isolation part at any time in second bar.

First with vent hole 65 and second with vent hole 66 in vertical plane be projected as square hole or round hole or Person's slotted eye, first with vent hole 65 and second with the hole length of vent hole 66 in the axial direction be 61 diameter of gas distribution channels in the first bar To the 1/3-2/3 in aperture.

Embodiment two

Fig. 2 to Fig. 4, a kind of down-the-hole air hammer are please referred to, which includes that impactor described in embodiment one is matched Gas bar.

Preferably, which includes: outer shell 1, piston 2, connector 3, control valve 4 and drill bit 5, and piston 2 is set in In outer shell 1, connector 3 and drill bit 5 are respectively arranged on the both ends of outer shell 1, and control valve 4 is mounted in connector 3, and control valve 4 with 3 piston of connector is connected.

The distribution bar of the high pressure gas down-the-hole air hammer is arranged inside impactor, and the first end fixation of distribution bar is inlaid in In the first end 31 of connector 3, the second end of distribution bar is set in piston 2；It is set on connector 3, control valve 4, distribution bar and piston 2 It is equipped with the gas distribution channels 7 being mutually communicated controllablely.

Preferably, control valve 4 includes control valve core 41, control valve seat 42 and control spring 43, the fixed peace of control valve seat 42 In connector 3, the first end of control valve core 41 is connected with 32 piston of pressurized gas inlet on connector 3, control valve core 41 Second end is sleeved in control valve seat 42, and control spring 43 is arranged in control valve core 41 and control valve seat 42, and controls spring The inner end of 43 both ends difference contact control valve core 41 and control valve seat 42.

Preferably, it is provided with mounting base ear 64 in the first end of distribution club shaft 6, is provided in the two sides of mounting base ear 64 Distribution bar resilient cushion 8, the distribution bar resilient cushion 8 of two sides clamp mounting base ear 64 and distribution bar are fixedly mounted on the of connector 3 In one end 31；Adjusting pad 9 and retaining ring 10 are additionally provided in the first end 31 of connector 3, retaining ring 10 is mounted in the first end 31 of connector 3 Interior, adjusting pad 9 is arranged between distribution bar resilient cushion 8 and retaining ring 10.

As further preferred embodiment, high pressure gas down-the-hole air hammer further includes spacer 11 and adapter 12, every Set 11 is set in inside outer shell 1, and adapter 12 is arranged in 1 end of outer shell, and a part of adapter 12 is inlaid in outer shell 1, every Baffle ring 13 is provided between set 11 and adapter 12；Drill bit 5 is mounted on adapter 12 by spline.

Preferably, control valve seat 42 is provided at least two control valve gas via-holes 420, pressurized gas inlet 32, control Gas distribution channels 61, first are mutual with vent hole 66 with vent hole 65 and gas booking groove and second in valve gas via-hole 420, the first bar Connection forms gas distribution channels 7.

Preferably, outer shell 1, piston 2, connector 3 and distribution bar surround the first air distribution cavity 101, outer shell 1, piston 2, drill bit 5, Distribution bar and spacer 11 surround the second air distribution cavity 102；The high pressure gas of outside conveying is alternately full of second by gas distribution channels 7 Air distribution cavity 102 drives piston 2 to move back and forth in outer shell 1 with the first air distribution cavity 101 of compression.

Preferably, drill bit 5 is solid bit, and the deslagging through-hole 51 of perforation drill bit side wall is offered on drill bit 5.

Preferably, the shoulder of connector 3 is provided with wear-resisting alloy block 33.

Preferably, the head of control valve core 41 is coated with wearable elastic pad 411；Alternatively, the shoulder of control valve core 41 is arranged There is wear washer 412.

All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and the highlights of each of the examples are differences from other embodiments.

The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to institute The embodiment of description.To those skilled in the art, in the case where not departing from the principles of the present invention and spirit A variety of change, modification, replacement and modification that these embodiments carry out are still fallen within and are within the protection scope of the utility model.

Claims (4)

1. a kind of impactor distribution bar is used for high pressure gas down-the-hole air hammer characterized by comprising the body of rod (6), the bar Gas distribution channels (62), first bar in gas distribution channels (61) and the second bar are offered in the first bar mutually completely cut off in body (6) Interior gas distribution channels (61) are identical as the radial aperture of gas distribution channels (62) in second bar, gas distribution channels in first bar (61) and in second bar isolation part (63) are set as between gas distribution channels (62)；

The first end of the body of rod (6) is provided with mounting base ear (64), and the mounting base ear (64) is cyclic structure or more A projection cube structure extended radially；It is opened up on the bar wall of gas distribution channels (61) section in first bar on the body of rod (6) Have two or multiple first mutually staggered with vent hole (65), on the body of rod (6) in second bar gas distribution channels (62) offered on the bar wall of section one or two mutually stagger second with vent hole (66).

2. impactor distribution bar according to claim 1, which is characterized in that the axis of gas distribution channels (61) in first bar To 3-8 times that length is gas distribution channels (62) axial length in second bar；Gas distribution channels (62) are axial in second bar Length is 2-5 times of isolation part (63) axial length at any time.

3. impactor distribution bar according to claim 2, which is characterized in that described first with vent hole (65) and described the Two are projected as square hole or round hole or slotted eye in vertical plane with vent hole (66), and first distribution is logical Hole (65) and described second with hole length of vent hole (66) is in the axial direction the radial aperture of gas distribution channels (61) in first bar 1/3-2/3.

4. a kind of down-the-hole air hammer, which is characterized in that the down-the-hole air hammer includes as described in any one of claims 1 to 3 Impactor distribution bar.