Device for cutting non-metallic materials, mainly natural stone
(57) Abstract:The inventive device for cutting non-metallic materials contains a hollow body, two saws with cutting elements, the actuator for moving buildings drank and the guide element. The cutting elements are installed with the same step for working the periphery of the housing of each of the saw. Actuator for moving buildings saws made in the form placed in the internal cavity of the device crank-slider mechanism with two sliders. The guide element is mounted on the device and is made with shaped cross section with a longitudinal groove. The case of each of saws mounted on the corresponding slide. The guide element comprises floaters and buildings drank. Floaters and buildings drank installed with the possibility of longitudinal displacement in the longitudinal groove of the guide element. The magnitude of the maximum displacement hulls drank relative to each other along the longitudinal axis of the guide element is at least twice the magnitude of the step placement of cutting elements. 4 C. p. F.-ly, 3 ill. The invention relates to the mining industry, in particular, to devices for cutting metal materials, preimushestvenno any non-metallic materials, for example, wood or organic materials.A device for cutting non-metallic materials, including a drive ring with teeth cut into large diameter, mounted on the teeth of the cutting tool and a toothed gear, which is kinematically connected with the engine and the teeth which are installed with the opportunity to interact with the teeth of the drive ring (ed.St. USSR N 605971, CL E 21 C 47/10, 1978).A disadvantage of this device is a high degree of environmental pollution by debris (rubble), which are formed by sawing rocks. This is because formed after interaction of the cutting tool with a sawn material particles of destroyed rock engaged by the teeth of the drive ring and released the rotation of the latter from cutting into the environment.Closest to the proposed to the technical essence and the achieved result is a device for cutting limestone, which contains a hollow body mounted with the possibility of reciprocation in opposite directions one relative to the other two saws, for working the periphery of the housing kaplony on the device guide (ed.St. USSR N 1360993, CL E 21 C 47/10, 1987).During operation of this device the removal of products of destruction takes place directly on the cut, which reduces the harmful effects of the device on personnel and the environment. However, the use of the device leads to a significant increase in the intensity of the process of destruction of the material, which is caused by the increase in the width formed by cutting and irrational influence of the cutting elements on the destructible material. Increase the width of cut is caused by the fact that the design of the known device includes two guide elements, which are installed parallel to each other and each of which moves the body the appropriate saw. Irrational influence of cutting elements on destructible material caused by the fact that the amount of movement of the cutting elements of each of the saw relative to each other is not regulated and, therefore, does not exclude the mode of operation in which it is possible incomplete overlap of the cutting elements of the entire area formed by the cut. In addition, the use as an actuator for moving buildings saws vibrators cannot provide a sufficient stroke of the cutting elements otoshidama such a device for cutting non-metallic materials, which would lower the energy intensity of the process of sawing material.For this purpose, the device for cutting non-metallic materials, which contains a hollow body mounted with the possibility of reciprocation in opposite directions one relative to the other two saws, for working the periphery of the housing each of which is installed with the same step of cutting elements, the actuator for moving buildings drank and fixed on the housing, the guide element, the actuator for moving buildings saws made in the form placed in the internal cavity of the device crank-slider mechanism with two slides, and a guide element is designed with shaped cross section with a longitudinal groove, in which is installed with the possibility of longitudinal movement of the slide and the housing drank, the housing of each of saws mounted on the respective slide, and a guide element covers floaters and housing drank, and the value of the maximum displacement hull drank relative to each other along the longitudinal axis of the guide element is at least twice the magnitude of the step placement of cutting elements on the same axis.Dir the us in the form of inserts made of hard alloy.The width of the guide element does not exceed twice the width of the cutting element.The device has a handle.In Fig. 1 shows a device for cutting non-metallic materials; Fig. 2 kinematic diagram of the drive device of Fig.3 section a-a in Fig.1
Device for cutting non-metallic materials includes a hollow body 1. On the housing 1 of the device is fixed to the guide element 2 with a longitudinal groove 3. Installed with the possibility of reciprocation in opposite directions one relative to the other two saws are composed of buildings 4 and 5, working on the periphery of each of which is installed with the same step T cutting elements 6. Cutting elements 6 may be made in the form of diamond rectangular bars (Fig.3) or in the form of inserts made of hard alloy (Fig.1). In the inner cavity of the housing 1 of the device are located actuator for moving bodies 4 and 5 saws, which is made in the form of a crank-slider mechanism with two sliders 7 and 8. Crank-slider mechanism also contains two of the connecting rod 9 and 10, each of which is hinged or with the corresponding slider 7 and 8, or with the corresponding conisma. The shaft 12 of the crank-slider mechanism may be in the form of a crankshaft (not shown) on the neck which has a crank, pivotally connected with the corresponding connecting rod 9 and 10. The cranks can be made in the form of a gear wheel 13 located on each end surface of the trunnion 14 for pivotally attaching a respective connecting rod 9 and 10. This kinematic relationship of the output shaft of the engine 11 to the shaft 12 of the cranks can be installed on the output shaft of the engine 11, the toothed gear 15, which is mounted for engagement with the toothed wheel 13. The centers of the trunnions 14, connecting the corresponding connecting rod 9 and 10 with the corresponding crank, are located in one plane passing through the longitudinal axis of the shaft 12 of the cranks, and on different sides (opposite) from the longitudinal axis of the shaft 12 of the cranks. Case 4 saws mounted on the slide 7 and the housing 5 other saws mounted on the other slide 8. The sliders 7 and 8, and section 4 and 5 saws installed with the possibility of longitudinal displacement in the longitudinal groove 3 of the guide element 2. The guide element 2 covers both of the slide 7 and 8 and the partial bodies 4 and 5 saws. The guide element 2 can be made in one piece with the housing and the guide element 2 is at least twice the magnitude of the step T of the arrangement of the cutting elements 6 on the same axis, i.e., the kinematics of the crank-slider mechanism provides the condition: B 2T.It is advisable to allow sawing a rock during the production of natural stone condition, in which the width of the guiding element 2 does not exceed twice the width To the cutting element 6.The housing 1 of the device may have a device (not shown) to secure it to the frame stone cutting machine, or in the case of using the device as a hand tool on the housing 1 of the device may be secured to the handle 16.Device for cutting non-metallic materials is as follows.In array pre-form a working bus for devices. In a working bus (not shown) place the device and Orient it in the plane of the cut performed. Then with the remote control (not shown) include the engine 11. Torque is transmitted from the output shaft of the engine 11 via a toothed gear 15 to the gear wheel 13, which performs the functions of cranks. Using a crank-slider mechanism converts the rotational motion of the cranks (gears 13) in the back-and-Postup, aspolozhena opposed relative to the longitudinal axis of the shaft 12 of the cranks, the sliders 7 and 8 are moved in opposite directions relative to each other. In the same direction are moved in the longitudinal groove 3 of the guide element 2 and the housings 4 and 5 saws because they are rigidly connected to respective sliders 7 and 8. Then submit device, for example, using an actuator moving stone cutting machine. In the interaction of the cutting elements 6 destructible material, each cutting element 6 carries out the destruction on the site, completely blocking the installation step of cutting elements 6. The interaction of the cutting elements 6, which are located in adjacent buildings 4 and 5 saws, condition B 2T allows with minimal expenditure of energy to drive the saws to ensure the destruction of the material along the length of the housings 4 and 5 saws. After sawing material engine 11 disconnect and remove the device from the cut. 1. DEVICE FOR CUTTING non-METALLIC MATERIALS, MAINLY NATURAL STONE, comprising a hollow body mounted with the possibility of reciprocation in opposite directions one with respect to another two paragraph is La move buildings drank and fixed on the housing, the guide element, characterized in that the actuator for moving buildings saws made in the form placed in the internal cavity of the device crank-slider mechanism with two slides, and a guide element is designed with shaped cross section with a longitudinal groove, in which is installed with the possibility of longitudinal movement of the slide and body drank. in this case each of saws mounted on the corresponding slider and the guide element comprises floaters and housing drank, and the value of the maximum displacement hulls drank relative to each other along the longitudinal axis of the guide element is at least twice the magnitude of the step placement of cutting elements.2. The device under item 1, characterized in that the cutting elements are in the form of diamond rectangular bars.3. The device under item 1, characterized in that the cutting elements are in the form of teeth carbide.4. The device according to PP.1 to 3, characterized in that the width of the guide element does not exceed twice the width of the cutting element.5. The device according to PP.1 to 4, characterized in that the device has a handle.
FIELD: working stone or stone-like materials, particularly to cut cellular concrete, stone and other materials having different strength, hardness and moisture content into blocks of predetermined size.
SUBSTANCE: device comprises frame with sawbow, guiding columns, sectional sliding table installed on the columns and working movement drives. The device also has the second sawbow. The first and the second sawbows are installed so that they may move in perpendicular directions relatively the frame and form grid relative to massif supply direction. The composite sliding table may be lifted along guiding columns transversely to sawbows reciprocation plane. Each sawbow and composite sliding table are connected to working movement drives of sawbows and to vertical movement drive of composite sliding table correspondingly. The grid may be adjusted to adapt the grid for necessary block dimensions. The composite sliding table may be adjusted accordingly to grid parameter regulation.
EFFECT: extended functional capabilities, possibility to perform milling to predetermined block height simultaneously with massif cutting, reduced device size and mass and increased cutting accuracy along with simultaneously reduced maintenance costs.
SUBSTANCE: invention relates to liquid compositions used to prepare abrasive slurries for loose abrasive mechanical processing. The composition contains 40-50 vol % polyethylene glycol and 50-60 vol. % water. The composition can contain a viscosity modifier which provides viscosity ranging from 40 to 100 cP, and a viscosity activator selected from triethanolamine and aminoborate. The invention also discloses a method of preparing a liquid composition for use in back-and-forth cutting with a wire saw. The liquid composition is obtained by mixing components of the composition. Abrasive particles selected from silicon carbide, diamond and boron carbide are uniformly dispersed inside the composition. A working slurry with concentration of the solid phase equal to 20-28% of the volume of the composition is obtained. Water is added to the working slurry in order to change viscosity to the one required for cutting.
EFFECT: invention enables to obtain low-viscosity abrasive slurries which prevent settling down of the solid phase and reduce destruction of plates when cutting with a wire saw.
20 cl, 1 tbl, 2 dwg, 3 ex
SUBSTANCE: invention relates to mining, particularly, to production of construction materials, namely to sawing of the natural stone blocks. Claimed process comprises pressing of toothed saw to the rock for the saw to reciprocate and to deliver impacts at reciprocation. Note here that the saw is pressed continuously while percussion is effected onto the saw top, the percussion force and frequency are defined proceeding from the rock physical and mechanical properties. This invention discloses also the percussion tool.
EFFECT: accelerated separation of blocks from the massif or disintegration of blocks into plates-blanks, better quality of sawing.
3 cl, 4 dwg
FIELD: mining industry, particularly open-cast mining, particularly to produce natural stone blocks from sheet deposits by open-cast mining.
SUBSTANCE: method involves forming benches in each separate deposit so that production deposit is arranged at bench bottom; excavating mineral blocks by moving hydraulic excavator bucket teeth under productive deposit bottom and removing the blocks having natural configuration due to applying hydraulic action of excavator boom, handle and bucket to block with the use of natural deposit fracture porosity, which defines configuration and volume of produced blocks.
EFFECT: increased output, possibility to produce blocks from thin sheet deposits along with maintaining natural block volumes.
FIELD: mining industry, namely, high capacity (with load capacity over 40 tons) loading and transporting machines for underground and open mining operations.
SUBSTANCE: loading and transporting machine includes loading tool, consisting of bucket with impact teeth, boom and controlling hydro-cylinders, driving mechanism and force plant. Frontal wall of bucket is made with part extending beyond its side walls shaped as isosceles triangle or shape close to that for distance not less than 1/3 of its total length. Working edge of frontal wall of bucket is formed by even sides of triangle. Impact teeth are mounted along the axis of front wall, near side walls and with step of 3÷5 of width of impact tooth. Back wall of bucket is made inclined relatively to front wall at an angle more than 90°.
EFFECT: increased efficiency of machine operation due to lowered resistance of insertion of bucket into stack of rock.
6 cl, 2 dwg
SUBSTANCE: invention relates to mining industry and can be used at open development of carbonate deposits for the purpose of complex preparation for processing mineral stock. Taking into account preliminary estimation based on acoustic fracturing indicator, specific transformation component is determined additionally for each unit by selecting zones in the direction and depth of fractures by means of sections profiling with determination of the propagation speed of longitudinal, transverse elastic waves in the units and depending on the density, distinguishable strength and thermophysical properties of the selected zones by means of software for specifying the direction of stratification, type of carbonate rocks and prediction of energy impact parameters on the selected unit zones, then it is performed, leaving the integrity of strong rock blocks, first, selective extraction of specified units zones for producing chips of various grades and carbonate raw material with the help of jib pit machine, then recess of strong rock blocks is made.
EFFECT: technical result consists in improvement of production efficiency and complexity of carbonate mineral stock, differentiation of the obtained product with increase in its commercial cost, increase in safety, reliability of operations and reduction of capital costs.
SUBSTANCE: invention relates to mining industry and can be used in stone blocks production. Method includes formation of bench, block delineation by blast holes system located in vertical, side and horizontal planes, blast holes filling with not explosive destructive means, block separation from formation by creating of stretching forces along its contour, bench side surface is formed with angle of 90°, in vertical blast holes arranged along block length sections of detonation cord are placed and sealed with plug, initiating detonation cord and block is shifted into stripped area under detonation wave effect.
EFFECT: higher safety of operations, excluding of additional works on chipped off block displacement and obtaining of regular-shaped blocks.
1 cl, 2 dwg