CN2228495Y

CN2228495Y - One direction bend chain for trench digger

Info

Publication number: CN2228495Y
Application number: CN94242791U
Authority: CN
Inventors: 孙善康; 沈震亚
Original assignee: No89001 Troop Pla
Current assignee: No89001 Troop Pla
Priority date: 1994-10-18
Filing date: 1994-10-18
Publication date: 1996-06-05
Anticipated expiration: 2004-10-18

Abstract

The utility model relates to a one-way bend chain for a trench digger, which is mainly composed of inner and outer chain pieces, a pin shaft, a locking pin, a sleeve and a roller and is characterized in that the inner chain pieces form a horizontal eight figure; the outer chain pieces are a square and the upper parts of the outer chain pieces are drilled with two holes for installing tools; inner gaskets are arranged between the roller and the inner chain pieces. The utility model has the advantages of few parts, good assembly character, simple structure, long working life for the inner chain pieces, and high efficiency, can prevent the rotation of the tools without taking other measures, and can be widely used for digging hard earth such as frozen earth, etc. or digging thawing earth.

Description

Trench-digging machine bend in one direction chain

The utility model relates to a kind of trench-digging machine bend in one direction chain that frozen soil is conciliate frozen soil that is used to excavate.

At present, the bucket chain that uses on the excavator mostly is two sides bending, free sagging bucket chain.This bucket chain can only be used to excavate the softer frozen soil of separating, and can not be used in the occasion of excavating frozen soil and other stiff soil.The bucket chain of the one side bending of particular design office of former Soviet Union's " building road machine " design, though can conciliate operation under the frozen soil condition at frozen soil, but because its inside and outside chain sheet all is a convex shape, make one side keep rigidity, not crooked, need in convex shape, block be set the both sides on outer chain sheet top; Owing to have only a cutter installing hole on the convex shape outer chain sheet, prevent that cutter from rotating, and also need take to place restrictions on measure in addition again.Component are many, the structure more complicated.In addition, because its inner chain sheet directly contacts with the roller two ends, when excavating frozen soil and hard soil, the sprocket on the gear directly impinges upon on the inner chain sheet, and inner chain sheet is prone to crackle, so that damages.Therefore, need often to change inner chain sheet, operating efficiency is not high.

The purpose of this utility model is to provide the trench-digging machine bend in one direction chain that a kind of inner chain sheet is not fragile, the cutter installation is reliable, simple in structure, operating efficiency is high.

For achieving the above object, the utility model is taked following technical solution.The utility model mainly by outer chain sheet, bearing pin, end lock pin, sleeve, inner chain sheet and roller and form, roller sleeve is contained on the sleeve, inner chain sheet then matches with the two ends of two sleeves that have roller by two holes on it, and make the external surface of inner chain sheet concordant, thereby form an inner link with the two ends of sleeve.In two sleeves of this inner link bearing pin is housed all.Several inner links are connected by being drilled with the outer chain sheet of pin-and-hole with the cutter erection opening, bearing pin thereon and ending lock pin, promptly constitute trench-digging machine bend in one direction chain described in the utility model.Its design feature is: outer chain sheet is four jiaos and is circular-arc square chain sheet, is drilled with two cutter erection openings on it, this erection opening and pin-and-hole symmetry; Inner chain sheet is horizontal 8 print train sheets; Inner washer also is housed between sleeve on the bearing pin and the inner chain sheet, and its effect is to avoid the gear teeth directly to clash into inner chain sheet, prolongs the application life of inner chain sheet.

Because outer chain sheet of the present utility model is square, block need not installed in its top can guarantee that one side has rigidity, so assembling is good, simple in structure; Simultaneously because outer chain sheet is square, and the locus is big, the cutter erection opening can increase to two by one, needn't take other measure can prevent the rotation of cutter; In addition, owing between inner chain sheet and sleeve inner washer is housed, make sprocket directly not clash into inner chain sheet, the working life that has prolonged inner chain sheet needn't often be changed inner chain sheet, can improve operating efficiency greatly.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a trench-digging machine bend in one direction chain schematic diagram;

Fig. 2 is the outer chain sheet schematic diagram;

Fig. 3 is the inner chain sheet schematic diagram;

Fig. 4 is the inner link schematic diagram;

Fig. 5 is the single chain link schematic diagram that constitutes trench-digging machine bend in one direction chain.

With reference to Fig. 3, Fig. 4, on two sleeves 5, roller 7 is housed, inner washer 3 is equipped with at the two ends of these two sleeves 5 respectively, 8 font inner chain sheets 6 are enclosed within two two ends that have the sleeve 5 of roller 7, inner washer 3, and make the external surface of inner chain sheet 6 keep concordant, thereby constitute an inner link with the both ends of sleeve 5.With reference to Fig. 1,2,5, in two sleeves 5 of an inner link, put a bearing pin 2 respectively, and the lockpin hole that ends at these bearing pin 2 two ends is exposed.Outer chain sheet 1 top is drilled with two cutter erection openings 9, pin-and-hole 8 symmetries of this erection opening and its underpart.Matching with two pin-and-holes 8 of outer chain sheet 1 bottom respectively in the two ends of two bearing pins 2 that two inner links are adjacent, ends lock pin 4 and insert ending in the lockpin hole of these adjacent two bearing pin 2 two ends, thereby constitute a bend in one direction chain chain link (see figure 5).At last some bend in one direction chain links are coupled together by means of ending lock pin 4, be trench-digging machine bend in one direction chain described in the utility model.

Claims

1. trench-digging machine bend in one direction chain, comprise outer chain sheet (1), bearing pin (2), end lock pin (4), sleeve (5), inner chain sheet (6) and roller (7), described roller (7) is sleeved on the sleeve (5), inner chain sheet (6) then matches with the two ends of two sleeves (5) that have roller (7) by two holes on it, and make the external surface of inner chain sheet (6) concordant with the both ends of sleeve (5), to constitute an inner link, in two sleeves (5) of this inner link bearing pin (2) is housed, some inner links is characterized in that by means of being drilled with the outer chain sheet (1) of pin-and-hole with the cutter erection opening and ending lock pin (4) and link to each other:

(1) outer chain sheet (1) is four jiaos and is circular-arc square chain sheet, and its top is drilled with two cutter erection openings (9), and this erection opening is symmetrical in pin-and-hole (8);

(2) inner chain sheet (6) is horizontal 8 print train sheets;

(3) also be equipped with between sleeve (5) on the bearing pin (2) and the inner chain sheet (6) in order to prevent that the gear teeth from directly clashing into the inner washer of inner chain sheet (6) (3).