CN2905357Y

CN2905357Y - Air pick

Info

Publication number: CN2905357Y
Application number: CN 200620103836
Authority: CN
Inventors: 唐金浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-19
Filing date: 2006-05-19
Publication date: 2007-05-30
Anticipated expiration: 2016-05-19

Abstract

It is a type of air pick which contains pick handle, connecting sleeve, and air inlet unit and valve gear at the end of the connecting sleeve. Set in turn on the inner shoulder of the connecting sleeve the valve chest with air returning channel and the cylinder body with exhaust hole and air returning channel. Ram, pick rod, and pick sleeve. The head of the cylinder body joins a head spring. Maintains the advantage of great impact force of the former G20 air pick, this utility model adapts an air inlet valve which heads in accordance with the impact direction to reduce the damage of the vacant striking to the cylinder body, so to prolong its service life. And several silencing holes are set at the side of the air pick silencing cap, and a bumper is installed between the air pick handle and connecting sleeve. The air inlet unit and the connecting sleeve of the air pick are connected by tapered-thread. The improved construction gives the air pick the advantages of lighter weight, smaller noise, and better damping effect during its usage. The tapered-thread fitting between the air inlet unit and the connecting sleeve provides them tighter connection, more reliable loose-proofing and better sealability.

Description

Pneumatic pick

Technical field

The utility model relates to a kind of pneumatic tool, is applied to the pneumatic pick of reinforced concrete building, cement, frozen soil layer, ice sheet, soft mineral, soft rock, road construction crushing operation specifically.

Background technology

Pneumatic pick is to utilize compressed air to promote hammer body to move back and forth, and impacts pick rod and squeeze into working substance, makes working substance split into a kind of pneumatic tool of piece, and its range of application is very extensive, for example mines in the colliery and digs the suspension column hole; Broken concrete, frozen soil and open ice in the building installation engineering; Adopt the rock of the broken bulk in rock field etc., the most frequently used in the market pneumatic pick is G10 pneumatic pick and G20 pneumatic pick, just open when the air intake valve device that the G10 pneumatic pick adopts can only be consistent with impact direction, can reduce sky and hit damage cylinder body, but impulsive force is but very little, fragmentation for some hard working substances just seems unable to do what one wishes, and the bigger G20 pneumatic pick weight of impulsive force is very heavy, the unlatching of its air intake valve device is random, being easy to produce sky hits, cause the damage of cylinder body, reduce cylinder body service life, and two kinds of pneumatic picks all exist noise big, the defective of damping effect difference, both inlet ducts also are easy to unclamp with being threaded of coupling sleeve, cause the leakage of Compressed Gas.

Summary of the invention

Goal of the invention of the present utility model all provide in the defective that overcomes prior art a kind of in light weight, impulsive force is big, noise is little, good damping effect, is connected firmly the pneumatic pick of good airproof performance.

According to the foregoing invention purpose, embodiment of the present utility model is:

A kind of pneumatic pick, comprise helve and be located at the interior coupling sleeve of helve, be provided with the helve spring between helve and the coupling sleeve, the coupling sleeve end is provided with the valving of vertically arranged inlet duct and break-make air inlet, the shoulder place is provided with the valve gap with air admission hole successively in the coupling sleeve, spool, valve cabinet and cylinder body with return-air road with steam vent and return-air road, be provided with the disk spring of pad and location and installation between it and the valve gap, described cylinder body and coupling sleeve are fixed, be provided with hammer body and pick rod in the cylinder body, cylinder head is connected with spring, coupling sleeve and cylinder body also are provided with an end outward and are fixed on the helve end, the other end surrounds the cylinder body steam vent and slides silencer cover in cylinder surface synchronously with helve, it is characterized in that described silencer cover side is provided with a plurality of bloops; Described inlet duct is connected with the coupling sleeve taper thread.

Be provided with cushion pad between described helve and the coupling sleeve.

The described inlet duct that is connected with the coupling sleeve taper thread comprises that two ends are the connecting tube of taper thread, and this connecting tube one end is connected with coupling sleeve, and the other end is connected with nut, and nut seals the trachea that is located by connecting simultaneously.

Described nut seals the trachea that is located by connecting by " O " RunddichtringO and inner shield ring.

Described valving comprises that two ends have the butterfly gate of symmetrical blind hole, is provided with the butterfly gate spring in this butterfly gate lower end blind hole, and the middle part is for can lead to compressed-air actuated concave ring structure.

Be provided with the drill sleeve of close-fitting in cylinder body between described pick rod and the cylinder body.

Compared with prior art, the utility model improves on the basis of original G20 pneumatic pick, both kept the big advantage of G20 pneumatic pick impulsive force, valving with pneumatic pick improves again, the air inlet of the valving after the improvement is changed into by original randomness and could open can only be consistent with impact direction the time, reduced empty damage of hitting to cylinder body, improve cylinder body service life, and be provided with a plurality of bloops in the side of pneumatic pick silencer cover, be provided with cushion pad between the helve of pneumatic pick and the coupling sleeve, adopt taper thread to be connected between the inlet duct of pneumatic pick and the coupling sleeve, it is in light weight that structure after the improvement in use has pneumatic pick, noise is little, the advantage of good damping effect, its inlet duct is connected with taper thread between the coupling sleeve makes that both connections are tightr, better tightness.

Description of drawings

Fig. 1 is the utility model sectional structure schematic diagram.

The specific embodiment

Embodiment is described in detail the utility model again below with reference to accompanying drawing.

As shown in Figure 1, pneumatic pick comprises that can supply a hand steered helve 1 of holding operation, and helve adopts the lighter aluminum of weight to make, and dwindled lateral dimension, make the in light weight of helve integral body, lighter during operation, be provided with coupling sleeve 12 in the helve, be provided with helve spring 2 and cushion pad 3 between helve and the coupling sleeve, the effect of helve spring and cushion pad is when pneumatic pick uses, and reduces the injury of impacting the user, plays the effect of a damping.

Described coupling sleeve 12 ends connect inlet duct, this inlet duct comprises that an end passes that through hole set on the helve 1 is screwed onto on the coupling sleeve 12, the other end is screwed onto the connecting tube 24 on the nut 25, the two ends of this connecting tube adopt taper thread to connect, connecting tube 12 is provided with the junction of helve 1 and connects packing ring 23, taper thread connects can reach better sealing function, prevented compressed-air actuated leakage, and it is tightr to be spirally connected, locking more reliable; Connect the junction that packing ring 23 can cover connecting tube 12 and helve 1, keep the attractive in appearance of pneumatic pick integral body.Connecting tube 24 can connect trachea 28 by nut 25, this trachea one end is provided with convex shoulder, just be fitted in during connection on the interior shoulder set in the nut, also being provided with one between trachea 28 and the nut 25 prevents the inner shield ring 26 of the past interior slippage of the relative nut of trachea and prevents " O " RunddichtringO 27 that compressed air leaks, the outer surface of the trachea other end is provided with many pawls, slippage in the time of can preventing to be connected with flexible pipe.Trachea 28 with the assembling process of nut 25 is: will have nut one end that trachea one end of pawl is packed into and had tapered thread, when the convex shoulder of trachea end is fitted in that shoulder is gone up in the nut, by inner shield ring 26 trachea 28 that is located by connecting, this connected mode make trachea not relatively nut 25 contract toward in, but do not hinder trachea to rotate relative to nut 360 degree, its effect is in the pneumatic pick use, even up when straight as the air induction hose that pneumatic pick coiling need be reversed, need not only needs whole pneumatic pick upset can even up straight all air induction hoses by relatively rotating of trachea and nut.

Coupling sleeve 12 ends also are provided with the valving of break-make air inlet, this valving comprises that two ends have symmetrical blind hole, and the butterfly gate 4 of vertical gas circuit installation, be provided with butterfly gate spring 5 in the blind hole of butterfly gate lower end, the middle part is for can lead to compressed-air actuated concave ring structure, during normal condition, butterfly gate spring 5 pushing tow butterfly gates 4, the concave ring structure and the compressed air channel of butterfly gate are staggered, gas circuit is closed, when using, depress helve 1, the butterfly gate spring 5 of butterfly gate lower end makes butterfly gate 4 begin slippage along the direction of power by compression, when gas circuit is opened in slippage when concave ring structure is in gas channels.Also be provided with the helve pad between the butterfly gate in helve 1 and the coupling sleeve 12, this helve spacers adopts with the butterfly gate identical materials madely on helve in the set groove, and its effect is to prevent that butterfly gate from directly contacting with helve, and the helve generation is worn and torn.

The interior shoulder of coupling sleeve 12 is provided with valve gap 8 successively, spool 9 and valve cabinet 22, described valve gap nestles up the interior shoulder of coupling sleeve 12, be provided with disk spring 7 and pad 6 between the two, this disk spring 7 is installed in the set groove of valve gap 8, pad is installed between disk spring and the coupling sleeve, be evenly equipped with 12 air admission holes on the valve gap 8, one end of this air admission hole is communicated with the compressed air channel in the coupling sleeve, the other end is blocked by the spool 9 of adjacent setting, it blocks mode: the spool end is provided with flanged structure, and the upper surface of this flanged structure is adjacent to valve gap 8 lower surfaces that have air admission hole.Valve cabinet 22 is sleeved on the outside of spool 9, which is provided with return-air road 30, the end is located by connecting by the cylinder body 16 of two alignment pins 11 with adjacent setting, one end of cylinder body and the 22 adjacent settings of valve cabinet is screwed onto on the coupling sleeve 12 with external screw thread, and fix with coupling sleeves by 8 backing pins 13 that are distributed between cylinder body and the coupling sleeve, the backing pin outside is provided with anti-pin and falls the backing pin cover 14 that pin-and-hole, after also being provided with steam vent 17 that downward 30 degree tilt on the cylinder body and being located by connecting by alignment pin, the cylinder body return-air road 30 that communicates with valve cabinet return-air road, cylinder body return-air road inlet be in steam vent 17 below, cylinder body 16 inside are provided with hammer body 18, but hammer body slides at the cylinder interior easy on and off, cylinder body can be divided into by hammer body, following two chambeies, hammer body 18 is provided with cannelure, the effect of this groove is the impurity that produces in the time of can depositing hammer body and inboard wall of cylinder block friction, and in the time of in there is cannelure in impurity, also play the effect of a hermetic seal.

Cylinder body 16 inside also are provided with pick rod 19, outside fining away, the working end of this pick rod is exposed at the cylinder body outside, the other end is upper and lower to be slided in drill sleeve 20, this drill sleeve is located between pick rod and the cylinder body, and close-fitting is in cylinder body, its effect is: when pick rod 19 is squeezed into working substance and working substance when not having fragmentation, by shaking pick rod working substance is broken, and the power of shaking pick rod acts directly on and can not act on the cylinder body 16 on the drill sleeve 20, prevent the destruction of pick rod, when drill sleeve is ground away, only need change drill sleeve like this and need not to change whole cylinder body cylinder body.Pick rod 19 blocks by being located at the head springs 21 that cylinder head, screw thread screw connection, and the effect of this head springs is to fall when preventing that pick rod from promoting.Coupling sleeve 12 and cylinder body also are provided with the silencer cover 15 that adopts engineering plastics to make outward, this silencer cover surrounds cylinder body steam vent 17, the one end is fixed on helve 1 end by outer collar 10, the other end slides on cylinder body 16 surfaces synchronously with helve, the fixed form of helve and silencer cover 15 is: helve end and silencer cover end are respectively equipped with three uniform boss, when three boss on the silencer cover are higher than three boss of helve end, only need turn an angle, making silencer cover boss and helve boss be the state of stacking gets final product, at this moment outer collar 10 blocks both boss, it can't be staggered, and silencer cover 15 just has been fastened on helve 1 end.The side of silencer cover also is provided with a plurality of bloops 29, the noise that produces in the time of can effectively eliminating pneumatic pick work by this bloop, also can give off small amount of impurities, bloop only is located at the side and the benefit that is not located at the front is: when work, directly from the side silencer cover discharging of the impurity of going out in the pneumatic pick can not injure the user, if when being located at the front, the impurity of going out in the pneumatic pick can rush at working substance, is rebounded to the user by working substance again, injures user's eyes.

The use of this pneumatic pick is, with the hand steered helve 1 of holding, with pick rod 19 top alignment work things, depress helve then, under pressure and pneumatic pick self gravitation, the concave ring structure slippage of set butterfly gate 4 is to gas channels in the valving, gas circuit just is opened, the compressed air that enters from inlet duct arrives in the coupling sleeve 12 by valving fast, act on the flange of spool 9 through 12 uniform on the valve gap 8 air admission holes, promote spool and move down, formed gap between spool and the valve gap this moment, compressed air enters the epicoele of cylinder body 16 through the gap of spool and valve gap, and the hammer body 18 that promotes in the cylinder body descends; When hammer body is crossed the steam vent 17 at cylinder body middle part, the residual air pressurized of cylinder body cavity of resorption, form air cushion, along with hammer body 18 constantly descends, the air pressure of cavity of resorption raises, and gases at high pressure are 30 arrival valve cabinets, 22 return-air roads through cylinder body return-air road, and the spool 9 that promotes again to be sleeved in the valve cabinet rises, flange up to spool is adjacent to valve gap 8 air admission holes again, thereby the gas circuit that blocking-up compressed air enters the cylinder body epicoele, this moment, hammer body 18 dependence inertia were still to move down at a high speed, up to bump pick rod 19, finish drawback movement, pneumatic pick has been finished a working cycles, and the work of going round and beginning again then, and hammer body moves back and forth, clashing into pick rod, pick rod is destroyed object.The effect that helve spring 2 that is provided with between helve 1 and the coupling sleeve 12 and cushion pad 3 have bumper and absorbing shock, the noise that the silencer cover 15 that is arranged on cylinder body steam vent 17 outsides discharges in the time of can eliminating the steam vent exhaust, these structures alleviate impulsive force injury and the The noise that the user is subjected to greatly.When unclamping the pressure that is pressed on the helve 1, under the effect of butterfly gate spring 5, butterfly gate 4 rising homings, the concave ring structure of the butterfly gate gas channels that staggers, gas circuit is cut off, hammer body 18 stop motions, power cut-off.

The utility model basic parameter is: the heavy 17.5kg of machine, total length 640mm, impact energy 〉=55j, frequency of impact 〉=16H, air consumption≤30L/S, hammer body diameter 40mm, tracheal diameter 19mm, operating air pressure 0.5-0.63Mpa, bit shank specification 30 * 87mm is applicable to rock, the crushing operation of objects such as concrete is particularly useful in the urban infrastructure engineering the broken firm mattess and the dismounting of body of wall, be used for cutting and broken black in highway and the pipeline construction, white pavement, with the repairing that makes things convenient for road with chisel the road surface, being applicable to that also quarrying waits other similar crushing operation occasion.

Claims

1, a kind of pneumatic pick, comprise helve (1) and be located at the interior coupling sleeve (12) of helve, be provided with helve spring (2) between helve and the coupling sleeve, the coupling sleeve end is provided with the valving of vertically arranged inlet duct and break-make air inlet, the shoulder place is provided with the valve gap (8) with air admission hole successively in the coupling sleeve, spool (9), have the valve cabinet (22) in return-air road (30) and have steam vent (17) and the cylinder body (16) of return-air road (30), be provided with the disk spring (7) of pad (6) and location and installation between it and the valve gap (8), described cylinder body (16) is fixing with coupling sleeve (12), be provided with hammer body (18) and pick rod (19) in the cylinder body, cylinder head is connected with spring (21), coupling sleeve and cylinder body also are provided with an end outward and are fixed on helve (1) end, the other end surrounds cylinder body steam vent (17) and slides synchronously at the surperficial silencer cover (15) of cylinder body (16) with helve, it is characterized in that described silencer cover side is provided with a plurality of bloops (29); Described inlet duct is connected with coupling sleeve (12) taper thread.

2, pneumatic pick according to claim 1 is characterized in that being provided with cushion pad (3) between described helve (1) and the coupling sleeve (12).

3, pneumatic pick according to claim 1 and 2, it is characterized in that the described inlet duct that is connected with coupling sleeve (12) taper thread comprises that two ends are the connecting tube (24) of taper thread, this connecting tube one end is connected with coupling sleeve (12), the other end is connected with nut (25), and nut seals the trachea that is located by connecting (28) simultaneously.

4, pneumatic pick according to claim 3 is characterized in that described nut (25) seals the trachea (28) that is located by connecting by " O " RunddichtringO (27) and inner shield ring (26).

5, pneumatic pick according to claim 1 is characterized in that described valving comprises that two ends have the butterfly gate of symmetrical blind hole (4), is provided with butterfly gate spring (5) in this butterfly gate lower end blind hole, and the middle part is for can lead to compressed-air actuated concave ring structure.

6, pneumatic pick according to claim 1 is characterized in that being provided with between described pick rod (19) and the cylinder body (16) drill sleeve (20) of close-fitting in cylinder body.