The working body earthmovers
The invention relates to the field of earth-moving machines and can be used in the working bodies of draglines, excavators, bulldozers, loaders, with working bodies with replaceable teeth. The working body earthmovers contains cutting edge and mounted on it by means of fasteners teeth. On the cutting part of the working body longitudinal rails. Teeth, even relative to the left and right extreme of the teeth of the cutting part, installed in the guide with the possibility of a fixed displacement in the past. The guides are made along the cutting portion in the form of through slots for the installation and rigid fixation of even teeth. The edges of each groove equidistant from the fixed teeth and the length of the grooves is not less than half the distance between adjacent lateral surfaces of the two series set of teeth in their uniform arrangement on the cutting edge. On the lower and/or upper sides of the cutting part is installed limiters triangular cross section, one side of which is still connected with the cutting part and the second adjacent to the tooth, and the third coupled with the second made flush with the surface of the cutting part. Led the region of the earth-moving machines and can be used in the working bodies of draglines, excavators, bulldozers, loaders, and similar machines with working bodies with replaceable teeth.Known working body of earth-moving machines, containing cutting edge with replaceable teeth, mounted in the guide (see S patent No. 262856, publ. 06.04.88, CL MCI E 02 F 3(40)).The disadvantage of the working body is the inability to adjust the distance between the teeth, which affects the cutting conditions of the soil and the frequency of replacement teeth.The basis of the invention is the task of reducing the effort of digging and ensuring uniformity of wear of the side surfaces of the teeth that will increase their service life.The problem is solved in that in the known working body at its cutting part is made of longitudinal rails, with teeth, even relative to the left and right extreme of the teeth of the cutting part, installed in the longitudinal guides, with the possibility of a fixed displacement in the past. The guides are made along the cutting portion in the form of through slots for the installation and rigid fixation of even teeth, and the edges of each groove equidistant from the fixed teeth and the length of the grooves is not less than half the distance between adjacent side is lower and/or upper sides of the cutting part of the established limitations of the triangular cross-section, one side of which is still connected with the cutting part and the second adjacent to the tooth, and the third coupled with the second made flush with the surface of the cutting part.Due to the possibility of changing the distance between the teeth is provided by reducing the effort of digging the ground as the cutting part of the working body earthmovers, and every tooth individually. At the same time this solution will allow revenuest teeth of the working body.In Fig.1 shows a cutting part with a removable false teeth; Fig.2 shows the section a-a of Fig.1.The working body earthmovers (see Fig.1) contains cutting edge 1 and installed it using fasteners 3 teeth 2. On the cutting part 1 working body longitudinal rails 4, and the teeth 2, even relative to the left and right extreme of the teeth of the cutting element, installed in the guide 4 with the possibility of a fixed displacement in the past. Rails 4 is performed along the cutting portion 1 in the form of through-groove (see Fig.2) for installation and rigid fixation of even teeth. The edges of each groove equidistant from the fixed teeth and the length of the grooves is not less than a half of the distance m is information on cutting part (see Fig.1). On the lower and/or upper sides of the cutting part 1 set the limiters 5 triangular cross section, one side of which is still connected with the cutting part 1, the second is adjacent to the tooth 2, and the third coupled with the second made flush with the surface of the cutting part 1.The working body earthmovers works as follows.The teeth 2, even relative to the left and right extreme of the teeth of the cutting part 1, are mounted in the guides, with the possibility of a fixed displacement in the past. They can navigate through the groove in which is rigidly fixed at a distance ofdetermined by the type developed ground to ensure uniform wear of the side surfaces of the teeth 2. The edges of each groove equidistant from the fixed teeth and the length of the grooves is not less than half the distance between adjacent lateral surfaces of the two series set of teeth 2 in their uniform arrangement on the cutting part (see Fig.1). On the lower and/or upper sides of the cutting part 1 set the limiters 5 triangular cross-section, which prevents transverse movement of the tooth on the cutting part 1. One side of the boundary is Lana flush with the surface of the cutting part 1.
Claims1. The working body earthmovers, containing the cutting part and installed it using fasteners teeth, characterized in that the cutting part of the working body longitudinal rails, with teeth, even relative to the left and right extreme of the teeth of the cutting part, installed in the guide with the possibility of a fixed displacement in the past.2. The working body earthmovers under item 1, characterized in that the guides are made along the cutting portion in the form of through slots for the installation and rigid fixation of even teeth, and the edges of each groove equidistant from the fixed teeth and the length of the grooves is not less than half the distance between adjacent lateral surfaces of the two series set of teeth in their uniform arrangement on the cutting edge.3. The working body of the earth-moving machine according to any one of p. 1 or 2, characterized in that the lower and/or upper sides of the cutting part is installed limiters triangular cross section, one side of which is still connected with the cutting part and the second adjacent to the tooth, and the third coupled with the second made Zapadni the
FIELD: earth-moving equipment.
SUBSTANCE: proposed excavator tooth unit contains holder with main part and nose part, both arranged coaxially relative to longitudinal axial line of holder. Main part is made for fastening said holder to excavator. Nose part terminates in free front end and it has upper and lower surfaces located mainly respectively higher and lower than longitudinal axial line of said holder. Upper surface of said nose part has two inclined sides arranged at opposite sides from longitudinal axial line and in front relative to rear end of said nose part over its length. Each inclined side of said upper surface is arranged at angle of 25-65° to horizontal plane. Lower surface of said nose part has two sides arranged at opposite sides relative to longitudinal axial line of said holder. Cavity made in said nose part comes to one of inclined sides of said upper surface of nose part of holder, being arranged along axis intersecting opposite sides of upper and lower surfaces of said nose part at angle of 30-60° to horizontal plane. Excavator tooth has front and rear end parts. Blind space open to rear end of said tooth and designed for fitting-in section of nose part of holder is made in rear end part of said tooth. Tooth is provided with hole arranged in working combination with inclined cavity of holder when tooth and holder are in working connection. Pin-type locking device is provided being arranged in cavity of said holder and at least partially passed through hole in said tooth for detachable fastening of tooth and holder in working connected. Tooth and holder described in invention form with tooth unit a ground of inventions.
EFFECT: improved reliability of excavator tooth unit.
40 cl, 31 dwg
FIELD: excavation equipment, particularly small metalwork for digging elements.
SUBSTANCE: unit for wearing and supporting members has replaceable tooth head and holding structure including intermediate holder with front part of front end arranged in pocket of rear end of tooth head and complementary thereto. Front part is secured in the pocket by the first glut pin structure. Holding structure also has main holder with front part of front end complementarily inserted in pocket of rear end of intermediate holder and secured in the pocket by the second glut pin structure. Rear end of main holder is operatively secured to cutting blade of excavator bucket. Each front part have oval configuration elongated in horizontal direction. Glut pin structures extend in horizontal direction. Front parts have reinforcing projections arranged in orifices adapted to secure front parts. Holder and tooth head are provided with mating ribbed areas.
EFFECT: reduced unit size, improved power and working characteristic, as well as wear-resistance characteristics.
40 cl, 7 dwg
FIELD: dredgers or soil-shifting machines for special purposes, particularly to cut chaps in ground.
SUBSTANCE: device comprises at least one cutter brought into rotation and at least one the first cutting member to cut ground during cutter rotation in the first direction. At least one the second cutting member for ground cutting rotated in the second direction opposite to the first one is installed on the cutter. At least one of the cutting members may be shifted from the first ground cutting position to the second diverted position. Executive tool to shift the cutting member between the first and the second positions is also provided.
EFFECT: increased cutting ability in both rotational directions, prevention of excessive cutting member wear.
12 cl, 2 dwg
FIELD: mechanical engineering; design of excavator dipper teeth.
SUBSTANCE: parallelepiped inserts are fitted in tooth point and inserts of cylindrical form are fitted further on along working plane. Inserts manufactured of wear-resistant cast iron, owing to shadow effect, prevent intensive abrasive wear of steel base, thus increasing service life of tooth. As wear-resistant inserts are arranged only on one of working surfaces, other surfaces (opposite one) is subjected to more intensive wear which provides finally sharpening of tooth in process of operation. Use of such design and method of manufacture make it possible to increase service live more than two times and provided reliability of operation of excavator dipper.
EFFECT: increased service life and provision of self-sharpening of tooth point owing to fitting-in small size wear-resistant cast iron parts in steel base.
4 cl, 4 dwg
FIELD: mining and building, particularly material shifting devices adapted to releasably connect replaceable bit of excavation tooth with transitional extension structure fastened thereto.
SUBSTANCE: replaceable bit is telescopically put on transition extension and removably secured thereto by means of elongated flat connection unit provided with side peripheral part free of constriction. Connection unit extends in longitudinal direction through bit and connection orifices aligned with each other and prevents bit removal from transitional extension by forward movement thereof. Transversal support surface of bit side facing one end of connection unit prevents it outward passage through one bit orifice. Blocking member supported by another connection unit end and engaged with groove in another bit orifice prevents outward connection member passage through bit orifice provided with grooves. Support structure releasably retains the blocking member in closing and opening directions, which prevent blocking member displacement parallel to connection unit length.
EFFECT: simplified working tool replacement.
51 cl, 5 dwg
FIELD: mining industry.
SUBSTANCE: invention can be used in working members of mining and earth-moving machines, particularly, in machines for digging hard and frozen soils. Proposed ripper point for breaking hard and frozen soils has shank with slot for fastening, and wedge-like working part formed by front end surface, two side surfaces and rear surface. Working part of front end surface located in place of intensive wear is reinforced along longitudinal axial line H-H by three of stress concentrators, being round elements projecting over front end working surface and dipped into body of point. Distance L between concentrators in row and distance 1 between rows is equal to triple value of their diameter.
EFFECT: reduced effort to applied to small soil, reduced power consumption for ripping, increased service life of ripper point.
FIELD: mining, particularly excavation equipment for detachable connection of replaceable tooth crown in earth-shifting machine.
SUBSTANCE: device comprises the first and the second telescopically joined members, aligned orifices formed in the members and adapted for connector receiving and connection finger unit for forced retention of the first and the second members so that the members are telescopically arranged one relatively another. Connection finger unit comprises body, fixing member and resilient stop member. The body is arranged in the aligned orifices so that the body may be removed therefrom. The connector prevents separation of the first member from the second one. The body also has channel opened in outer surface thereof and having non-round side surface section. Fixing member is arranged in channel and limited by side surface section. The fixing member may rotate with respect to the body from fixing position into releasing position and in reverse direction. Resilient stop member is connected with fixing member so that the stop member may rotate together with fixing member. The stop member is adapted to retain fixing member in fixing position. The stop member has periphery delimiting fixing member. The periphery is slidably joined with non-round side surface section so that the periphery and the side surface are mutually complementary.
EFFECT: increased efficiency of connection unit for wearing and support member connection.
37 cl, 14 dwg
SUBSTANCE: cog unit of earthmover bucket comprises cog with seat, which is open at the back and is a female part, besides specified cog has hole for fitting of fixing stud, adapter, having ledge, which is a male part that matches shape of specified seat, besides mentioned ledge is crossed with matching site for fixing stud, fixing stud inserted into specified hole of cog and into specified matching site in adapter and serving for cog fixation to adapter. At least one of specified opposite surfaces of ledge has lowered or deepened area arranged around matching site for fixing stud. At least the wall of seat that is inverted towards specified surface of ledge has relief part additionally to specified lowered or deepened area, having shape of boss that gradually increases in direction of open part of seat. Specified hole in seat walls and specified matching site in ledge have according flat back surfaces, which are matched to each other. Fixing stud has flat back surface, which simultaneously lies onto specified back surfaces of hole and matching site.
EFFECT: simplified design of cog unit for manufacturing, lower costs, avoidance of cog disconnection from adapter under severe operation conditions.
32 cl, 14 dwg
SUBSTANCE: proposed device comprises tooth arranged in adapter and connecting element with sleeve made from elastic deformable material, and key. Said tooth and adapter have holes and zones to receive said sleeve and key. Note that said key is inserted into sleeve to extend therefrom. Note also that said key is fitted aligned with sleeve to displace therein, while sleeve is arranged in adapter part. Key has end part that makes key base, and key head on the body opposite part. Key head has part that makes bearing surface with shifted center. The latter enters appropriate surface made in the tooth first hole. Key head end can be turned by actuator element. Key base has anchoring appliance that enters in elastically deformable sleeve due to first tightening preset-force action. Key base end has conical part that thrusts against tooth second hole making second tightening action exceeding aforesaid one and created by key turn. Key turn governs is shift relative to its initial axis and allows its locking by anchorage on either tooth metal components or different bearing zones.
EFFECT: appropriate locking of tooth-adapter link, higher labor safety.
16 cl, 21 dwg
SUBSTANCE: group of inventions relates to the field of mining and construction, in particular, to rotary cutting tool, which may be used to pierce through thickness of soil. Rotary cutting tool includes body, which has axial front end and axial back end, and also axial length. Hard tip, which has remote end, is fixed to body of cutting tool at its axial front end. Body of cutting tool has a section of back surface, arranged along axis behind remote end of hard tip, and having transverse dimension. Section of back surface includes axial front transverse dimension and minimum transverse dimension, which is located along axis behind axial front transverse dimension. Axial front dimension exceeds minimum transverse dimension. Section of back surface has axial length within the limits from approximately 10% to 35% of axial length of cutting tool body.
EFFECT: improvement of rotary cutting tool, to reduce extent of resistance of rotary cutting tool when piercing through soil thickness, with small angle of separation.
32 cl, 9 dwg