Tooth and adapter to attach tooth to working machine
FIELD: machine engineering.
SUBSTANCE: tooth for fastening to edge of working machine bucket through the adapter has a cavity for inserting a part of said adapter, extending between said first and second opposite outer working surfaces from open end in the fastening end of the tooth to the lower end. At that, a cavity is limited by an inner wall, which comprises first and second internally facing inner walls which are inner surfaces connected, respectively, with said first outer working surface and said second outer working surface, and opposite side walls connecting the first and second inner walls to each other. At that, the cavity limits a rear portion passing along the Y axis and at least partially disposed between the plane defined by the X and Z axes, and open end of the cavity, front part passing along axis Y and located between the plane defined by axes X and Z, and the lower end of the cavity and stepped part connecting the rear part and the front part to each other, at that, in the rear part both first and second inner walls have a pair of substantially plane rear contact surfaces separated from each other by a rear separating area extending beyond the limits of said pair of first contact surfaces. The invention also relates to an adapter and to a connection between the tooth and the adapter.
EFFECT: wear resistance, strength and reliability.
26 cl, 41 dwg
FIELD: process engineering.
SUBSTANCE: set of invention relates to cutter of trench milling device. Proposed milling cutter comprises main body comprises main drum-shape body with at least one circular row of mounts located at body outer periphery to carry soil cutters. Both drill bits with, in fact, point working teeth and cutting teeth with, in fact, linear cutting edges are arranged at least in one circular row. Ring made of sheet is welded to outer circular periphery of said main body whereat drill bits and cutting teeth of one circular row are located. Proposed cutter comprises the frame whereat several cutters are arranged in pairs. In compliance with proposed method, said cutter in introduced in soil to cut it by above described cutters.
EFFECT: efficient soil cutting without replacement of cutters.
14 cl, 4 dwg
SUBSTANCE: invention relates to construction machinery. Lock assembly comprises lock pin with at least one retainer extending outward therefrom. Lock assembly comprises retainer with seat and cavity, press element arranged in said retainer cavity. Press element applies pressure to lock pin retainer for it to be locked in retainer seat. Excavator wearing element has opening for lock extending through wearing element sidewall, take-up passage and locking recess. Take-up passage extends inward from sidewall outer surface. Locking recess is arranged on mounting lug inner surface. Take-up passage terminates at locking recess. Excavator wearing assembly comprises: wearing element with take-up cavity and lock opening, hole extending through wearing element sidewall. Opening for lock has take-up passage and locking recess. Lock pin comprises at least one retainer extending outward therefrom. Locking element is arranged inside locking opening for lock. Retainer has seat and cavity. Press element is arranged in retainer cavity. Adapter has journal and locking passage. Locking pin passes through lock opening and adapter locking passage. Press element applies pressure to lock pin retainer for it to be locked in retainer seat.
EFFECT: higher resistance to revolution relative to adapter.
24 cl, 41 dwg
FIELD: machine building.
SUBSTANCE: invention relates to excavating attachments, namely to fasteners of excavating attachments for fastening on buckets, blades and other working attachments. The adapter to interface the tip with the excavating attachment contains front area. The front area ensures the adapter installation in the cavity made in the excavating attachment. The front area includes a pin made on side surface of the front area, and a slot going behind the side surface of the front area. The slot is made over circle around the pin part.
EFFECT: invention ensures increased reliability and service life of the fastening assembly.
13 cl, 22 dwg
FIELD: machine building.
SUBSTANCE: invention relates to excavating attachments, namely to fasteners of excavating attachments for fastening on buckets, blades and other working members. The excavating attachment penetrator includes an external surface forming a front edge, and a backside surface counter to the front edge. The excavating attachment penetrator contains an internal hollow opened through the backside surface. The internal hollow has a lock cavity, located below it. The lock cavity is has a lock hole. The lock hole faces from the lock cavity towards the external surface of the excavating attachment. The excavating attachment penetrator has a groove located below of the internal hollow. One side of the groove is located at the backside surface, and the opposite side is located at the lock cavity.
EFFECT: perfected design.
15 cl, 31 dwg
SUBSTANCE: invention refers to a connection device made in the form of a worn-out element, mainly a tooth, though it can be made in the form of a protective element of a bucket, a mandrel or a transition element, and a fixing device of the above two elements, which are made mainly in the form of a pin. Besides, the fixing device can contain a retaining element with elastic properties, which is connected to the pin.
EFFECT: improving connection reliability of a worn-out element to an adapter of an excavator and similar machines.
22 cl, 58 dwg
SUBSTANCE: wearing part for a bucket of a loading or an earth-moving machine equipped with at least one front edge plate with an engaging edge directed forward, having a forward direction (F) and a backward direction (B) and comprising a fastening section for fixation of a wearing part to the bucket, having a section of a tightening surface for interaction in the field of the contact surface with a section of the pressing surface on the fastening element, capable of installation and pressing in the opening in the front edge plate. The section of the tightening surface is arranged in the groove of the fastening section and stretches at the angle (α) to the specified direction so that whenever the fastening element is used during pressing, a force is created, which acts at the wearing part in the backward direction (B). The part comprises a facility for connection with the engaging edge, representing a hook section, which includes an inner surface of the hook, designed for arrangement oppositely to and interaction with a slant inclined upwards and directed forwards on the edge plate during usage. The slant and the inner section of the hook form an angle (β), making 35-60° with the horizontal plane stretching via the front edge plate, and the section of the tightening surface stretches at the angle (α), making 35-60° to the specified forward direction. The fastening element has a forward direction (F), which is capable of installation and pressing in the hole in the front edge plate of the bucket and having a section of the pressing surface on the first part that acts at the wearing part and stretches at the angle α to the forward direction so that when the fastening element is used in pressing, a force is created, which acts at the wearing part in the backward direction (B). It includes two parts interacting by means of a threaded joint, the first part is equipped with a threaded section and a fastening head, on which there is a section of the pressing surface. The first part of the fastening element is equipped with the first section and the second section of the pressing surface, arranged at different distances relative to the axis (A), stretching via the first part of the fastening element. The system of the wearing part comprising at least one wearing part. The bucket for the loading or earth-moving machine, including the system of the wearing part.
EFFECT: increased operational reliability.
5 cl, 13 dwg
SUBSTANCE: as per the first version, excavating element includes the first element equipped with a surface interacting with soil, the second element having a pin; lock installed with possibility of being rotated between the first element and the second element and provided with a slot into which the pin is to be installed. At that, the above lock has the possibility of being rotated between closed position in which the pin cannot leave the slot and the second position in which the pin can leave the slot so that the first element can be separated from the second element. As per the second version, excavating element includes the first element equipped with a surface interacting with soil and lock cavity fixing the sleeve installed in lock cavity with possibility of being locked and unlocked, the lock having the first slot and installed with possibility of being locked and unlocked by means of locking sleeve, as well as rotation relative to locking sleeve.
EFFECT: protection of excavating element against wear, and improvement of excavation efficiency.
26 cl, 32 dwg
SUBSTANCE: shank-type cutter with base part includes shank; at that, shank carries the top of cutter made from hard-alloy material, and base part in the zone between shank and cutter top has the receiving section in which the head part is retained. Head part includes circumferential surface for removal of the cut material, which converges in the direction of the cutter top. At that, as per the first version, the head part is retained relative to the base part with possibility of being turned, and surface for removal of the cut material ends in the area of the base part end receiving the cutter top. As per the second version, head part has limit stop (support section) and/or mating surface, which restricts the erection movement of the head part on base part on support surface of the base part. As per the third version, base part has a clamping sleeve in the area of the shank. At that, head part is put on clamping sleeve, and at that, head part retains the clamping sleeve in pre-load position.
EFFECT: reducing the costs for elements at optimised wear.
12 cl, 4 dwg
SUBSTANCE: tail drilling bit includes head of bit and shank of bit; at that, shank of bit is equipped with clamping sleeve in which shank of bit is fixed in the direction of its longitudinal axis by means of captive coupling and has the possibility of free rotation about its longitudinal axis. Clamping sleeve is equipped with fasteners which are engaged with circumferential slot of attachment section of the bit shank so that clamping sleeve is retained so that it can be rotated, however with captive coupling in axial direction of the bit shank. The latter has shank elongation on its end facing from the bit head; at that, the above shank elongation has tool location element. The latter is accessible through intermediate area of shank elongation in the bit axial direction, which is shifted backwards (retracted) relative to external surface of the bit shank and/or relative to external surface of clamping sleeve.
EFFECT: simpler erection and removal of the bit through mounting hole for the bit attachment.
10 cl, 2 dwg
SUBSTANCE: ripper tip includes replaceable tooth and attached seat in top cover of ripper tip. Ripper tooth is protected against rotation within the above top cover of ripper tip owing to locking heavy-shrink fitting so that the replaceable ripper tooth does not rotate when it is being used. Locking heavy-shrink fitting prevents penetration of solid particles into the gap between the walls of the above tooth and the above attached seat. Tooth has locking cone-shaped stock, and the above seat is provided with cone-shaped hole to be adjoined to the above locking cone-shaped stock. Tooth is cone-shaped and ends with a tip. Tip is made from high-strength material. Ripper tooth includes head section made at least partially from high-strength material. Top cover and ripper tooth form conjugation between seat and stock of ripper tooth having the corresponding shape; at that, seat and stock of ripper tooth have inner cone for formation of clamping cone between top cover and tooth; at that, ripper tooth is removed from cover in case of failure of clamping cone. Seat with inner cone forms some part of section for arrangement of ripper tooth in the cover, and the above stock of ripper tooth having the corresponding shape forms the part of ripper tooth. In stock of ripper tooth and section for arrangement of ripper tooth there made are through transverse channels the axial lines of which are aligned in case of fixture in the seat of stock of ripper tooth, which allows inserting the retaining pin. Head section of ripper tooth includes outward protruding arm enabling removal of ripper tooth. Section for arrangement of ripper tooth includes displacement hole that passes from external section of ripper tip to the area of base of the above seat, which allows displacing the tooth at available corresponding tool.
EFFECT: improving wear resistance and service life and economic effectiveness.
21 cl, 14 dwg
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