CN2547874Y

CN2547874Y - Cutting pick

Info

Publication number: CN2547874Y
Application number: CN 02273254
Authority: CN
Inventors: 姜云龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-29
Filing date: 2002-05-29
Publication date: 2003-04-30
Anticipated expiration: 2012-05-29

Abstract

The utility model relates to a cutting tool, in particular to a cutting pick for a shearer and a roadheader. The cutting pick is arranged on a gear holder, and composed of a gear point and a pick body, wherein, the axis of the pick body is provided with an assembly hole in crown shape, the pick body is assembled with the gear holder through an intermediate shaft, one end of the intermediate shaft matched with the assembly hole of the pick body is locked by a double wire retaining ring, while the other end is inserted into the gear holder and fixed with an axial spring gear ring. The utility model saves materials, processes conveniently, prevents gear holder abrasion, and has low gear consumption.

Description

A kind of pick

Technical field

The utility model relates to cutting tool, is specially a kind of coal-winning machine, development machine pick.

Background technology

The pick that the cutting tool of coal-winning machine, development machine uses mainly is made up of pick body and crown, and a class is a pick-shaped cutter, and another kind of is knife shape cutter teeth.

Pick-shaped cutter directly is contained in the toothholder hole at first, its toothholder wearing and tearing and pick rotating property difference are outstanding problems, a kind of pick-shaped cutter with the tooth boots had appearred afterwards, be illustrated in figure 1 as pick-shaped cutter assembling schematic diagram, middle porose tooth boots 3 are plugged in toothholder 4, and are fixing with shaft-use elastic gear ring 6, the pick-shaped cutter front end is a crown 1, its pick body 2 has the tooth handle, is fixed in the interstitial hole of tooth boots 3 with expansion set 5, because tooth boots 3 have big outer eaves, toothholder 4 wearing and tearing have effectively been alleviated, and strengthened frictional rotation moment, thereby driven the pick-shaped cutter rotation, made crown 1 energy self-sharpening, not only cutting resistance is little, the tooth consumption is descended greatly, but rotating property is still very poor, untimely if tooth boots 3 are changed, still can not avoid toothholder 4 wearing and tearing, and pick and tooth handle are one, must set level forging, make troubles to processing, in addition because be expendable part, must together change together with the tooth handle, consumptive material is big, and cost is higher.

In addition, be illustrated in figure 2 as knife shape cutter teeth assembling schematic diagram, the knife shape cutter teeth front end is a crown 1, and pick body 2 is fixed in toothholder 4 by pin 41, and this pick rotating property is poor, and crown easily produces thermal wear and heat fatigue effect, and the tooth consumption increases.

The utility model content

The utility model purpose provides a kind of material, easy to process, pick that the tooth consumption is low saved.

The technical solution of the utility model is:

A kind of pick is made up of crown and pick body, and the pick axon heart is offered pilot hole, is crown.

The pick body is by jackshaft and toothholder assembling, and jackshaft one end matches with the pilot hole of pick body, and with two elastic spring lockings, the other end is plugged in toothholder, fixes with resilience gear ring with axle.

The beneficial effects of the utility model are as follows:

1. saving material.General pick-shaped cutter tooth handle is equivalent to 1/2 of pick gross weight heavily approximately, and the utility model crown type does not have the tooth handle of pick-shaped cutter, but offer pilot hole in the pick-shaped cutter axle center, its shape is as hat, the type pick so win, the anodontia handle of pick, offer endoporus, assembling the time does not need the tooth boots to be directly installed on the toothholder, obviously can save material in a large number, itself has big limb with the old replacing of pick, can more effectively prevent the toothholder wearing and tearing, it can exchange with existing pick-shaped cutter toothholder and install, and obviously helps model change, extensively promotes the use of as early as possible.

2. easy to process.The utility model is realized process modification easily because it does not have the tooth handle, realizes easily upright the forging, forges like this that dressing is few, precision is high, and appearance turning amount reduces, and endoporus can realize that again the relative turning amount of Drilling Operations reduces, and promptly saves material and can boost productivity again.

3. prevent that toothholder from wearing and tearing, the tooth consumption is low.The utility model is owing to can adopt the upright convenient limb that strengthens of forging on the technology, change in time with pick, can more effectively prevent the toothholder wearing and tearing, and limb can strengthen frictional rotation moment equally, and because the crown type pick directly pivots, rotates more flexibly, crown weares and teares more even, therefore can alleviate the thermal wear and the heat fatigue effect of crown carbide alloy to a great extent, will make the crown type pick that lower tooth consumption be arranged.

4. the utility model is installed jackshaft on toothholder, and the jackshaft lower end normally is fixed in the common toothholder hole, and the jackshaft upper end is installed the crown type pick and locked with elastic spring, and the crown type pick is a normal consumption spare like this, and jackshaft does not then need frequent replacing.

Description of drawings

Fig. 1 is a pick-shaped cutter assembling schematic diagram in the prior art.

Fig. 2 is a knife shape cutter teeth assembling schematic diagram in the prior art.

Fig. 3 is the utility model structural representation.

Fig. 4 is the utility model assembling schematic diagram.

The specific embodiment

Shown in Fig. 3～4, the utility model is installed on the toothholder 4 of coal mining machine roller, is used for directly cutting coal, form by crown 1 and pick body 2, crown 1 is embedded in the crown hole of pick body 2 front ends admittedly, and pilot hole is offered in axle center, pick body 2 rear end, is crown, pick body 2 is by jackshaft 7 and toothholder 4 assemblings, jackshaft 7 one ends match with the pilot hole of pick body 2, with two elastic spring 8 lockings, and with sealing mat 9 sealings, the other end is plugged in toothholder 4, and is fixing with resilience gear ring 6 with axle.

The utility model fractures in weakness band accident for preventing jackshaft 7, assembling the packing ring 10 that neck adds suitable thickness and hardness with pick again, even the thin axle fracture in top, packing ring 10 still can be locked in and prevent toothholder 4 wearing and tearing on the thick axle in bottom, as seen the reliability that this crown type pick uses also is more complete, particularly it has also considered the supporting installation of jackshaft and existing toothholder in design, and will help existing toothholder to select novel pick for use and promote the use of sooner.

Claims

1. a pick is made up of crown and pick body, it is characterized in that: pilot hole is offered in pick body (2) axle center, is crown.

2. according to the described pick of claim 1, it is characterized in that: pick body (2) is by jackshaft (7) and toothholder (4) assembling, jackshaft (7) one ends match with the pilot hole of pick body (2), lock with two elastic springs (8), the other end is plugged in toothholder (4), and is fixing with resilience gear ring (6) with axle.