CN201722567U

CN201722567U - Air-hammer impact mechanism of impact-type tamping pickaxe

Info

Publication number: CN201722567U
Application number: CN2010202672903U
Authority: CN
Inventors: 庾正中
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-22
Filing date: 2010-07-22
Publication date: 2011-01-26
Anticipated expiration: 2020-07-22

Abstract

The utility model provides an air-hammer impact mechanism of an impact-type tamping pickaxe. An external cylinder body (1) is fixedly connected with a gearbox body (11) at the upper part and a pickaxe rod support (6) at the lower part respectively; an impact hammer sleeve (3) is arranged in a hole of the external cylinder body (1); an impact hammerhead (5) and the hole are fixed in the internal hole at the center of the lower end surface of the impact hammer sleeve (3) by an elastic retaining ring (4); an air-pressing piston (2) is arranged in the hole of the impact hammer sleeve (3) and is connected with a toggle link mechanism which consists of a piston pin (8), a piston pin retaining ring (9), a connecting rod (10) and a crank (12); and the pickaxe rod (7) is arranged in the internal hole of the pickaxe rod support (6). The air-hammer impact mechanism can be machined conveniently; the impact hammer sleeve and the impact hammerhead are made of different steel materials according to working requirements, thus being more reasonable; when the impact hammerhead is damaged and needs to be replaced, the impact hammer sleeve with high value and long service life does not need to be replaced; therefore, the use and maintenance charge is greatly reduced for the user, and the air-hammer impact mechanism is applicable to tamping of railway sleeper ballasts and road maintenance crushing.

Description

The pneumatic hammer beater mechanism of impact type tamping pickaxe

Technical field: the utility model relates to impact type tamping pickaxe technology, particularly a kind of pneumatic hammer beater mechanism of impact type tamping pickaxe.

Background technology: the impact type tamping pickaxe of prior art, by the tamping pickaxe bar of bottom or tamping pickaxe are changed to broken bar or crushing head first watch, just become the breakup pick that is used for highway road maintenance crushing operation, the pneumatic hammer beater mechanism of impact type tamping pickaxe (breakup pick) has multiple both at home and abroad at present, but in technology, economical, aspects such as O﹠M all exist some defectives, as China Patent No. 200720012713.5, the tamping tool of notice of authorization CN 201106144Y issue, adopted in the tamping pickaxe outside and the space between jump bit and the displacer has been communicated with the reduction box intracorporeal space on top with pipeline, carry out the intake and exhaust working cycles, structure is loaded down with trivial details, exposed pipeline is impaired easily, and jump bit is not a nested structure, but solid, under the situation of equivalent weight, with respect to nested structure, axial length is too short, thereby the reciprocating guidance quality of high speed is bad vertically, cause relevant moving parts rapid wear, the as a whole part of jump bit in addition, the impact head position life-span of its underpart slight of stature is shorter, damage easily, occur damaging in case impact the head position, then need change whole part, cause the user to use the maintenance cost height; China Patent No. 200420010451.5, the tamping tool of notice of authorization CN 2690448Y issue and the German Brunswick BH23 type tamping pickaxe (breakup pick) that enters the Chinese market sale, both pneumatic hammer beater mechanisms are similar, though jump bit has adopted nested structure, but the intake and exhaust in the space between jump bit and the displacer, then be to be undertaken by axial crescent shape air channel and the ring-type air channel of processing on the jump bit endoporus disc, air channel position processed complex, manufacturability is bad, and the as a whole part of jump bit, the impact head position life-span of its underpart slight of stature is shorter, damage easily, occur damaging in case impact the head position, then need change whole part, cause the user to use the maintenance cost height.

Summary of the invention: the purpose of this utility model is the pneumatic hammer beater mechanism at present impact type tamping pickaxe both domestic and external (breakup pick), the deficiency that in technology, economy and use maintenance, exists, provide a kind of easy to process, the pneumatic hammer beater mechanism of the impact type tamping pickaxe that processing is low with using maintenance cost.

The formation that the utility model adopted:

A kind of pneumatic hammer beater mechanism of impact type tamping pickaxe, outer cylinder body is connected and fixed with the deceleration box on top and the pick rod bearing of bottom respectively, on the endoporus disc of outer cylinder body, be processed with air channel vertically, jump bit is sleeved in the hole of outer cylinder body, displacer is contained in the hole of jump bit cover, and with by piston pin, retaining ring for piston pin, connecting rod, the crank-link mechanism that crank is formed connects, the pick bar is contained in the endoporus of pick rod bearing, on the cylindrical of jump bit cover, be processed with cannelure, this cannelure communicates with the air channel of outer cylinder body endoporus, be processed with air vent in the cannelure of jump bit cover, the endoporus that jump bit is overlapped is communicated with cannelure; Impact tup and be fixed in the endoporus in the middle of the jump bit cover lower surface, in the endoporus in the middle of jump bit cover lower surface and impact below the tup, install and fix circlip for hole.

Compared with prior art, the processing of positions such as the utility model air vent, cannelure and air channel is simple and convenient, and cost is low, and the impact tup of rapid wear damages when changing, need not change and be worth height and long jump bit cover of life-span, thereby user's use maintenance cost reduces greatly.

Description of drawings: Fig. 1 is a structural representation of the present utility model,

Fig. 2 is the A-A sectional view of Fig. 1,

Fig. 3 is the B-B sectional view of Fig. 1.

Among the figure: 1, outer cylinder body, 2, displacer, 3, the jump bit cover, 4, circlip for hole, 5, impact tup, 6, pick rod bearing, 7, the pick bar, 8, piston pin, 9, retaining ring for piston pin, 10, connecting rod, 11, deceleration box, 12, crank, 13, air channel, 14, cannelure, 15, air vent.

The specific embodiment: as Fig. 1, Fig. 2, shown in Figure 3, outer cylinder body 1 is connected and fixed with the deceleration box 11 on top and the pick rod bearing 6 of bottom respectively, on the endoporus disc of outer cylinder body 1, be processed with air channel 13 vertically, jump bit cover 3 is contained in the hole of outer cylinder body 1, displacer 2 is contained in the hole of jump bit cover 3, and with by piston pin 8, retaining ring for piston pin 9, connecting rod 10, the crank-link mechanism that crank 12 is formed connects, pick bar 7 is contained in the endoporus of pick rod bearing 6, on the cylindrical of jump bit cover 3, be processed with cannelure 14, this cannelure 14 communicates with the air channel 13 of outer cylinder body 1 endoporus, in the cannelure 14 of jump bit cover 3, be processed with air vent 15, the endoporus of jump bit cover 3 is communicated with cannelure 14; Impact tup 5 is fixed on jump bit and overlaps in the middle endoporus in 3 lower surfaces, and in the endoporus in the middle of jump bit overlaps 3 lower surfaces and below the impact tup 5, installation circlip for hole 4 drops to prevent jump bit head 5 from becoming flexible in repeated stock work.

In the work, under the drive of crank and connecting rod movement, parts such as displacer, jump bit cover move back and forth vertically, and the space between displacer and the jump bit cover and the intake and exhaust working cycles in other space are undertaken by air vent, cannelure and air channel.Jump bit with prior art, be designed to by the jump bit cover, impact is hung one's head and circlip for hole is formed dismountable composite member, after the circlip for hole dismounting, the impact tup can put from jump bit and disassemble, jump bit overlaps and impacts tup according to different job requirements like this, can adopt different steel to make, can change easily impaired impact tup separately, thus more reasonable on the Technological Economy.

Claims

1. the pneumatic hammer beater mechanism of an impact type tamping pickaxe, outer cylinder body (1) is connected and fixed with the deceleration box (11) on top and the pick rod bearing (6) of bottom respectively, on the endoporus disc of outer cylinder body (1), be processed with air channel (13) vertically, jump bit cover (3) is contained in the hole of outer cylinder body (1), displacer (2) is contained in the hole of jump bit cover (3), and with by piston pin (8), retaining ring for piston pin (9), connecting rod (10), the crank-link mechanism that crank (12) is formed connects, pick bar (7) is contained in the endoporus of pick rod bearing (6), it is characterized in that: on the cylindrical of jump bit cover (3), be processed with cannelure (14), this cannelure (14) communicates with the air channel (13) of outer cylinder body (1) endoporus, in the cannelure (14) of jump bit cover (3), be processed with air vent (15), the endoporus of jump bit cover (3) is communicated with cannelure (14); Impact tup (5) and be fixed in the middle endoporus in jump bit cover (3) lower surface, in the endoporus in the middle of jump bit cover (3) lower surface and below the impact tup (5), circlip for hole (4) is installed.