CN217813449U - Short wall operation grinding and mining machine adopting grinding and mining mode - Google Patents

Abstract

The utility model relates to a mining equipment field specifically is a grind and adopts short wall operation of mining mode and grind machine of adopting. The technical problem to be solved is to improve a continuous miner, the improved continuous miner can be applied to direct grinding and mining of ore bodies in metal and nonmetal mines, the ground and mined ore powder is mixed with water to form ore pulp, the ore pulp can be directly subjected to ore dressing or deep processing, and part of ore pulp which does not meet the conditions can be ground and re-selected or re-processed. The main structure comprises a main frame, a grinding and mining part, a walking part, a water spraying and pulp making device, an ore pulp collecting device, an ore pulp pumping system, an electrical system, a hydraulic system and a cooling system, wherein the grinding and mining part comprises a grinding and mining driving motor, a grinding and mining driving reducer, a grinding and mining arm, a grinding and mining oil cylinder and a grinding and mining roller, and the grinding and mining roller is a diamond tool. The utility model discloses mainly be applied to in the ore body tunnelling tunnel, layering mill adopt the ore body, comprehensive or room column method mill adopt the grinding of the ore body, the corner ore body to adopt etc..

Description

Short wall operation grinding and mining machine adopting grinding and mining mode

Technical Field

The utility model relates to a mining equipment field especially relates to a grind shortwall operation of adopting mining mode and grind machine of adopting.

Background

At present, metal and nonmetal mines are generally mined by a drilling and blasting method, the mined ores need to be ground before being subjected to mineral separation or deep processing, the procedures before mineral separation or deep processing are complicated, the main procedures comprise drilling, blasting, ore loading, transportation, lifting, coarse crushing, medium crushing, fine crushing, grinding at all levels and the like, and due to the fact that the procedures are multiple, the types of equipment are complicated, the management of the mines is very complicated, the environmental pollution is serious, the potential safety hazard is prominent and other adverse factors.

The coal mining machine is put into production and application in the coal mine in the 40 th century of the 20 th century, and the application of the coal mining machine in the coal mine field is more and more extensive through the development of decades, particularly the development of the fully mechanized mining technology of underground coal mines. However, the coal mining machine is suitable for cutting coal mines and soft rocks, the production efficiency of the coal mining machine is obviously reduced for hard rocks, and the production cost is obviously improved, so that the coal mining machine is not widely popularized and applied to metal and nonmetal mines. In addition, the lump size of the ore cut by the coal mining machine does not have direct ore dressing conditions, and the ore is still required to be treated by ore crushing and grinding procedures.

Artificial diamond tools are widely used in quarries and stone processing, among which the most widely used is diamond circular saw blades. The diamond circular saw blade comprises a base body and a tool bit, wherein the tool bit is divided into sintering, electro-deposition, brazing and other types according to a manufacturing process, the sintered diamond tool bit is most widely applied to stone processing, the sintered diamond tool bit comprises two parts of artificial diamond and a matrix, the artificial diamond is designed and selected to comprise indexes such as grade, crystal form, particle size, concentration and the like, the matrix is generally alloy powder, and the artificial diamond and the matrix are prepared by cold pressing or hot pressing sintering after mixing granulation. The welding method of the diamond circular saw blade tool bit and the basal body is divided into modes of integral sintering, laser welding, high-frequency welding and the like, and most of the diamond circular saw blades with the diameter of more than 1200mm adopt high-frequency welding. The diamond circular saw blade is generally installed on a sawing machine for use, granite is taken as an example, quarry stone exploitation and large plate processing are carried out, and a large-diameter circular saw blade with the diameter of more than 1600mm is mostly installed on a mining machine or a cantilever type stone sawing machine for use. The stone powder generated when the artificial diamond tool such as the diamond circular saw blade and the like processes the stone such as granite and the like is relatively fine, and if the artificial diamond tool is used for processing other ores, the generated ore powder basically has the conditions of direct ore dressing or regrinding and recleaning. However, in addition to their wide application in quarries and stone processing, synthetic diamond tools have not found wide application in metal and non-metal mines, particularly in mechanical direct mining.

For metal and nonmetal mines needing ore dressing or deep processing, a grinding mining mode is firstly proposed. The invention relates to a novel mining machine, which is called a grinding and mining machine, by combining a coal mining machine and an artificial diamond tool. The ore body of the stope is directly ground and mined by using a grinding and mining machine, the ground and mined ore powder is fine in size fraction, the ore pulp formed by mixing the ore powder and water basically meets the mineral separation or deep processing conditions, the ore can be directly subjected to mineral separation or deep processing, and part of ore pulp which does not meet the conditions can be ground and re-selected or re-processed. Compared with the common drilling and blasting method, the grinding mining method omits a plurality of procedures mentioned above, and enables the procedures before mineral separation or deep processing to be in place in one step. Various types of equipment and devices used in all the processes are omitted while a plurality of processes are omitted, and one machine can replace various mining mechanical equipment. Because there is no link of blasting operation, and it needs to spray water to cool and dust-proof when grinding and mining, it can realize no gun smoke and dust pollution. In addition, part of the mines can arrange mineral processing equipment underground, ore pulp collected after grinding can be pumped to the mineral processing equipment for mineral processing treatment, concentrate after treatment is conveyed to the ground surface, and tailings are filled into a goaf after treatment. The green, waste-free, harmless and safe mining of the mine is really realized.

The continuous miner is suitable for short-wall working face operation and is mainly used for roadway excavation, room-type or room-and-pillar coal mining and corner coal mining. Generally comprises a cutting part, a loading and transporting part, a walking part, a hydraulic system, an electrical system, a cooling, spraying and dust removing device, a safety protection device and the like. According to different cutting parts, the cutting part is divided into two types, namely a cutting chain and a non-cutting chain. The continuous coal cutter cuts coal or soft rock by cutting teeth arranged on a cutting drum or a cutting chain, the cutter body of the cutting teeth is made of alloy steel, the end of the cutter-shaped cutting teeth is inlaid with a hard alloy core or sheet, and the end of the conical cutting teeth is welded with a hard alloy layer in a surfacing mode. Coal production generally requires increasing the lump size of coal and reducing coal dust, and such a goal can be achieved by improving the cutting picks of a continuous miner, but the objective is contrary to the concept of the grinding mining mode. The continuous coal mining machine is not popularized and applied to metal and nonmetal mines, only a small part of mines are directly used for breaking rocks by using a hard rock heading machine and a raise boring machine, but the continuous coal mining machine is only applied to roadway heading construction, and the method for mining ores in a stope is basically a drilling and blasting method. The continuous miner, the hard rock heading machine and the raise boring machine directly break hard ore bodies, compared with coal or soft rock, the consumption index of cutting teeth or cutting heads and the power consumption index can be greatly improved, and the drilling and blasting method is not economical; more importantly, the broken ore has certain lumpiness and size and cannot be directly subjected to mineral separation or deep processing.

Disclosure of Invention

To the above-mentioned prior art, the utility model aims to solve the technical problem that improve the continuous miner, can be applied to the direct grinding of ore body in metal and nonmetal mine after the improvement and adopt, grind and adopt the powdered ore and mix with water and form the ore pulp, the ore pulp can directly carry out ore dressing or deep-processing, and to some particle size fraction regrinding or reprocessing that is not conform to the condition.

In order to achieve the above purpose, the utility model adopts the following technical scheme.

A short-wall operation grinding and mining machine adopting a grinding and mining mode comprises a main frame, a grinding and mining part, a walking part, a water spraying and pulp making device, an ore pulp collecting device, an ore pulp pumping system, an electrical system, a hydraulic system and a cooling system; the main frame is of a single-layer fixed structure; the grinding and mining part comprises a grinding and mining driving motor, a grinding and mining driving reducer, a grinding and mining arm, a grinding and mining oil cylinder and a grinding and mining roller, the grinding and mining roller is a diamond tool, the grinding and mining arm is rotatably arranged at the upper end of the front part of the main frame through a grinding and mining pin shaft, the lower part of the grinding and mining part is also connected with the main frame through the grinding and mining oil cylinder, and the grinding and mining arm can be pulled to swing to drive the grinding and mining roller to grind and mine ore bodies when the grinding and mining cylinder stretches out and draws back; the walking parts are fixedly arranged on two sides of the main rack so as to drive the whole equipment to walk, and the walking parts are crawler-type; the water spraying and slurry making device comprises an external water spraying device and an internal water spraying device; the upper opening of the ore pulp collecting device is arranged at an opening between the grinding and mining roller and the front end of the grinding and mining arm, and the lower opening is connected with an ore pulp pumping system through a hose; the ore pulp pumping system comprises a water pump motor, a water pump, an electric hose winch and an ore pulp conveying hose, wherein the water pump is a slurry pump, the ore pulp collected by the ore pulp collecting device is sucked into an input port of the ore pulp pumping system, and the output end of the ore pulp pumping system can directly or indirectly convey the ore pulp into ore dressing equipment or regrind and recleaning; the cooling system is used for water cooling of the equipment motor and providing pressure water for the water spraying and slurry making device.

As an improvement of the utility model, the other form of the main frame is an upper-lower two-layer structure, which comprises a main frame upper-layer structure and a main frame lower-layer structure, the main frame upper-layer structure is connected with the grinding and mining part, and the main frame lower-layer structure is fixed with the left side and the right side of the walking part; arranging a plurality of carrier rollers in the region of the lower layer structure of the main rack corresponding to the upper layer structure of the main rack, wherein the upper layer structure of the main rack can translate left and right on the carrier rollers; four translation oil cylinders are arranged at four corners of the upper structure of the main frame, the cylinder ends of the translation oil cylinders are connected with and firmly fixed to the upper structure of the main frame, the piston rod ends of the translation oil cylinders are connected with the lower structure of the main frame, the end parts of the piston rods are firmly fixed, the translation oil cylinders can drive the upper structure of the main frame to horizontally move on the carrier roller relative to the lower structure of the main frame, and the maximum moving distance is not less than the length of one grinding and mining roller.

As another improvement of the utility model, the third form of the main frame is still an upper and lower two-layer structure, which comprises a main frame upper layer structure and a main frame lower layer structure, the main frame upper layer structure is connected with the grinding and mining part, and the main frame lower layer structure is fixed with the left and right sides of the walking part; a rotating shaft is arranged at the center of the upper structure of the main frame, and the upper structure of the main frame can rotate around the rotating shaft relative to the lower structure of the main frame; a rotary gear is arranged on the outer ring of the rotary shaft and is fixed with the upper layer structure of the main rack; the rotary oil cylinders are arranged on two sides of the rotary gear, cylinder ends of the rotary oil cylinders are connected with the lower layer structure of the main frame, piston rods of the rotary oil cylinders are in a rack form, the racks of the piston rods are meshed with the rotary gear, the telescopic movement of the piston rods of the rotary oil cylinders can drive the upper layer structure of the main frame to horizontally rotate left and right relative to the lower layer structure of the main frame around the rotary shaft, and the left and right maximum rotation angles meet the condition that the left and right grinding and mining rollers intersect at the center line.

As a further improvement, the number of the grinding rollers is 2 or more than 2, the length of all the rollers is equal, and the distance between the adjacent rollers is equal to or slightly less than the length of the rollers.

As a further improvement, the grinding drum comprises a drum base body and a cutter head, the drum base body is made of thin steel or aluminum alloy light materials, and the cutter head material is sintered diamond.

As the utility model discloses further improvement, the mode that the tool bit was fixed at the cylinder base member is the direct weld, and welding method divide into whole sintering, laser welding or high frequency welding mode, requires that the cylinder base member material is thin steel.

As a further another improvement of the utility model, the tool bit is welded on the base block firstly and then fixed on the tool bit seat of the roller base body, and the material of the roller base body is thin steel or aluminum alloy light material.

As a further improvement, the tool bit should be arranged on the surface of the side wall and the two end walls of the roller base body, the arrangement mode of the tool bit on the side wall is a straight line, a slant line, a spiral line or a staggered form, the arrangement mode of the tool bit on the two end walls is an interval arrangement, and the tool bit circular arcs of the intersection parts of the side wall and the end walls are in transition.

As a further improvement, the nozzles of the external water spraying device are arranged at the front end of the grinding and mining arm and the lower rear part of the grinding and mining roller, the nozzles of the internal water spraying device are respectively arranged on the surface of the side wall and the end wall of the roller base body, and the water spraying function also plays a role in cooling the cutter head except for manufacturing ore pulp.

As the utility model discloses further improvement, ore pulp collection device's material is made for the flexible glue skin, and ore pulp collection device top sets up the baffle, baffle top installation spring, and the ore pulp is directly sprayed the regional installation of ore pulp collection device and is prevented splash soft materials.

Compared with the prior art, the utility model discloses following beneficial effect has.

1. The utility model relates to a grind and adopt shortwall operation of mining mode and grind machine of adopting has widened in metal and nonmetal mine

The application range can directly grind and mine stope ore bodies.

2. The utility model relates to a short wall operation of grinding and mining mode grinds machine of adopting has simplified the mining process link, especially need carry out the metal and nonmetal mine that ore dressing or deep-processing handled to the ore, compares with the method mining of brill and explosion, has saved a great deal of process link before ore dressing or deep-processing, has also saved a great deal of kind mining equipment.

3. The utility model relates to a grind shortwall operation of adopting mining mode and grind machine of adopting has saved blasting operation link, and it is dustproof to need water spray cooling when adopting moreover to grind, can realize grinding and adopt operation no big gun cigarette and dust pollution. In addition, part of the mines can arrange mineral processing equipment underground, ore pulp collected after grinding can be pumped to the mineral processing equipment for mineral processing treatment, concentrate after treatment is conveyed to the ground surface, and tailings are filled into a goaf after treatment. The green, waste-free, harmless and safe mining of the mine is really realized.

4. The utility model relates to a grind short wall operation of adopting mining mode and grind machine of adopting mainly is applied to tunnelling tunnel, layering mill and adopts the ore body in the ore body, comprehensively or room column method grind the mill of adopting the ore body, corner ore body and adopt etc..

Drawings

Fig. 1 is a main view structure diagram of the short wall operation milling and mining machine of the milling and mining mode of the utility model.

Fig. 2 is the overlooking structure diagram of the short wall operation grinding and mining machine of the grinding and mining mode of the utility model.

Fig. 3 is a schematic view of the upper and lower layers of the main frame of the present invention.

Fig. 4 is a schematic view of the structure of the main frame of the present invention rotating up and down and left and right.

Fig. 5 is a front view of the milling drum side wall cutter head and the internal water spraying device nozzle arrangement of the utility model.

FIG. 6 isbase:Sub>A cross-sectional view of the milling drum sidewall bit arrangement of FIG. 5 taken along line A-A.

Fig. 7 is a front view of the arrangement of the end wall cutter head and the internal water spraying device nozzle of the grinding and mining roller of the utility model.

Figure 8 is the utility model discloses an ore pulp collection device structure chart.

Fig. 9 is a plan view of the construction sequence of the short wall working milling and mining machine of the structure of the upper and lower two-layer left and right translation of the main frame single layer fixing structure or the main frame.

Fig. 10 is a plan view of the construction sequence of the short wall working milling and mining machine with the structure of rotating left and right at the upper and lower layers of the main frame.

Description of reference numerals:

1-a main frame; 2-grinding and mining part; 3-a walking part; 4-a pulp collection device; 5-a pulp pumping system; 6-an electrical system; 7-a hydraulic system; 8-a cooling system; 9-external water spraying device; 10-internal water spraying; 11-driver's cab; 12-stabilizing the hydraulic cylinder; 21-grinding and mining driving motor; 22-grinding and mining driving reducer; 23-grinding and mining arms; 24-grinding and extracting oil cylinder; 25-grinding and collecting a roller; 26-grinding and mining the pin shaft; 41-a baffle plate; 42-a spring; 43-splash-proof soft material; 51-a water pump motor; 52-a water pump; 53-electric hose winches; 54-a pulp transfer hose; 101-a main frame upper layer structure; 102-main frame lower layer structure; 103-a translation oil cylinder; 104-carrying rollers; 105-the axis of rotation; 106-a rotary gear; 107-rotary oil cylinder; 251-a roller base; 252-tool bit.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments, which include, but are not limited to, the following embodiments.

Fig. 1 and fig. 2 show a main view structure diagram and a top view structure diagram of a short wall operation grinding and mining machine of the grinding and mining mode of the invention. A short-wall operation grinding and mining machine adopting a grinding and mining mode comprises a main frame 1, a grinding and mining part 2, a walking part 3, a water spraying and pulp making device, an ore pulp collecting device 4, an ore pulp pumping system 5, an electrical system 6, a hydraulic system 7 and a cooling system 8.

The main frame 1 is of a single-layer fixed structure.

The grinding and extracting part 2 comprises a grinding and extracting driving motor 21, a grinding and extracting driving reducer 22, a grinding and extracting arm 23, a grinding and extracting oil cylinder 24 and a grinding and extracting roller 25. The milling drum 25 is a diamond tool. The grinding and mining arm 23 is rotatably arranged at the upper end of the front part of the main frame 1 through a grinding and mining pin shaft 26, the lower part of the grinding and mining part 2 is also connected with the main frame through a grinding and mining oil cylinder 24, and the grinding and mining arm 23 can be pulled to swing to drive the grinding and mining roller 25 to grind and mine ore bodies when the grinding and mining oil cylinder stretches out and draws back. The biggest difference with the continuous miner is that: the continuous coal mining machine adopts a cutting drum or cutting teeth on a cutting chain to cut coal and rock, a certain pressure is provided for the cutting teeth to destroy a coal rock layer, and the cutting drum or the cutting chain rotates to drive the cutting teeth to impact and cut the coal rock layer, so that coal breaking and rock breaking are realized; the grinding and mining roller of the embodiment is a diamond tool, the grinding and mining roller comprises a base body and a diamond tool bit, the diamond tool bit grinds ore by means of a certain height of a diamond cutting edge, and the ground ore is fine in size fraction and equivalent to the effect of direct ore grinding due to the fact that diamond particles are fine, so that the grinding and mining machine is called as a grinding and mining machine.

The walking part 3 is fixedly arranged on two sides of the main frame to drive the whole equipment to walk, and the walking part 3 is in a crawler type. Of course, the traveling unit 3 may be of a rubber-tire type, a rail type, or a walking type for various uses.

The water spraying and slurry making device comprises an external water spraying device 9 and an internal water spraying device 10. The corresponding device name of the continuous miner is a cooling spray dust removal device, and the water spray slurry making device of the embodiment is listed independently because of the importance of water spray, namely, the ore pulp making, dust removal and cutter head cooling, which is also different from the continuous miner.

The upper opening of the ore pulp collecting device 4 is arranged at the opening between the grinding and mining roller 25 and the front end of the grinding and mining arm 23, and the lower opening is connected with the ore pulp pumping system 5 through a hose.

The input port of the ore pulp pumping system 5 sucks the ore pulp collected by the ore pulp collecting device 4, and the output end of the ore pulp pumping system 5 can directly or indirectly convey the ore pulp into ore dressing equipment or regrinding and recleaning. The slurry pumping system 5 comprises a water pump motor 51, a water pump 52, an electric hose winch 53 and a slurry conveying hose 54, wherein the water pump 52 is a slurry pump. Unlike a continuous miner, the product of the grinding and mining of the ore body in this embodiment is a mixture of ore fines and water, i.e., a slurry. Unlike a shearer loader, which collects and transports solid dispersion products, a different method is required for the slurry than the shearer loader.

The electrical system 6, the hydraulic system 7 and the cooling system 8 are arranged on the main frame 1. The cooling system 8 is used for water cooling of the equipment motor and providing pressure water for the water spraying and slurry making device. A driver's cab 11 is disposed on the main frame 1 as needed. A stabilizing hydraulic cylinder 12 is arranged at the rear lower part of the main frame 1.

Fig. 3 shows the structural schematic diagram of the vertical two-layer horizontal movement of the main frame of the short wall operation milling and mining machine of the milling and mining method of the utility model. The other form of the main frame 1 is an upper-lower two-layer structure and comprises a main frame upper-layer structure 101 and a main frame lower-layer structure 102, the main frame upper-layer structure is connected with the grinding and mining part 2, and the main frame lower-layer structure is fixed with the left side and the right side of the walking part 3; a plurality of carrier rollers 104 are arranged in the region of the main frame lower layer structure 102 corresponding to the main frame upper layer structure 101, and the main frame upper layer structure 101 can translate left and right on the carrier rollers 104; four translation oil cylinders 103 are arranged at four corners of the main frame upper structure 101, cylinder ends of the translation oil cylinders are connected with and fixedly fixed to the main frame upper structure 101, piston rod ends of the translation oil cylinders 103 are connected with and fixedly fixed to the main frame lower structure 102, the translation oil cylinders 103 can drive the main frame upper structure 101 to horizontally move left and right on the carrier rollers 104 relative to the main frame lower structure 102, and the maximum moving distance is not less than the length of one grinding roller.

The purpose of taking the embodiment of the two-layer left and right translation structure about the main frame is for the utility model relates to a grind and adopt the shortwall operation of mining mode grind adopt the machine when construction operation save grind adopt the cylinder counterpoint need the time that equipment started and guarantee the accuracy of counterpointing. It should be noted here that the main frame superstructure 101 supports the grinding and mining part 2, and when the main frame superstructure 101 is translated and the grinding and mining part 2 operates, the main frame superstructure 101 is stressed complicatedly, and must ensure its stability, cannot overturn, and minimize the vibration generated during the operation of the grinding and mining part 2. This embodiment mainly achieves the above requirements through four translation cylinders 103, and therefore, the cylinder and the piston rod end of the translation cylinder 103 should be firmly fixed.

Fig. 4 shows the schematic diagram of the structure of the main frame of the short wall operation milling and mining machine of the milling and mining method of the present invention, which is rotated up and down and left and right. The third form of the main frame 1 is still an upper-lower two-layer structure and comprises a main frame upper-layer structure 101 and a main frame lower-layer structure 102, the main frame upper-layer structure is connected with the grinding and mining part 2, and the main frame lower-layer structure is fixed with the left side and the right side of the walking part 3; a rotating shaft 105 is arranged at the center of the upper structure 101 of the main frame, and the upper structure 101 of the main frame can rotate relative to the lower structure 102 of the main frame around the rotating shaft 105; a rotary gear 106 is arranged on the outer ring of the rotary shaft 105, and the rotary gear is fixed with the upper layer structure 101 of the main frame; rotary oil cylinders 107 are arranged on two sides of the rotary gear 106, cylinder ends of the rotary oil cylinders are connected with the main frame lower layer structure 102, piston rods of the rotary oil cylinders 107 are in a rack form, the piston rod racks are meshed with the rotary gear 106, the main frame upper layer structure 101 can be driven to horizontally rotate left and right around the rotary shaft 105 relative to the main frame lower layer structure 102 through the expansion and contraction of piston rods of the rotary oil cylinders 107, and the left and right maximum rotation angles meet the condition that left and right rollers intersect at a center line.

Fig. 5-7 show the utility model discloses a schematic diagram is arranged to the short wall operation of the mining mode of grinding adopts the cylinder lateral wall tool bit and inside water jet equipment nozzle of grinding of the short wall operation of mining machine, grinds adopts cylinder end wall tool bit and inside water jet equipment nozzle and arranges the schematic diagram, grinds and adopts cylinder longitudinal cut. The number of the grinding and mining rollers 25 is 2 or more than 2, the lengths of all the rollers are equal, and the distance between every two adjacent rollers is equal to or slightly smaller than the length of the rollers.

The grinding drum 25 comprises a drum base 251 and a cutter head 252, wherein the drum base is made of thin steel or aluminum alloy light materials, and the cutter head is made of sintered diamond.

As one of the methods for fixing the cutter head 252 to the roller base 251, direct welding is used, and the welding method is classified into a bulk sintering method, a laser welding method, or a high frequency welding method, and the roller base 251 is required to be made of thin steel. As another fixing method of the cutter head, the cutter head 252 is welded to the base block and then fixed to the cutter head seat of the roller base 251, and the roller base 251 is made of thin steel or aluminum alloy light material.

The cutting heads 252 are arranged on the side wall and two end wall surfaces of the roller base 251, the side wall cutting heads are arranged in a straight line, oblique line, spiral line or staggered mode, the two end wall cutting heads are arranged at intervals, and the cutting heads at the intersection parts of the side wall and the end walls are in circular arc transition.

The nozzle of the external water spraying device 9 is arranged at the front end of the grinding and mining arm 23 and at the lower rear part of the grinding and mining roller 25, and the reason for arranging the external water spraying device 9 is that when the grinding and mining roller 25 rotates from bottom to top, water spraying is carried into the grinding and mining body along with the trend, so that the functions of manufacturing ore pulp and cooling a cutter head are achieved; the nozzles of the internal water spray device 10 are respectively arranged on the surface of the side wall and the end wall of the roller base body 251, and the water spray function is still used for manufacturing the slurry and cooling the cutter head.

The above embodiments list the requirements for the number and length of the milling drums 25, the composition and material, the welding or fixing method, the location and form of the cutting head 252, the nozzle arrangement requirements for the external water jets 9 and the internal water jets 10, etc. The present invention is not limited to the specific method of the above embodiment. It should be noted that the grinding drum 25 is the core of the present invention. The embodiment provides that the tool bit 252 adopts sintered diamond, and the tool bit is a large-diameter circular saw blade tool bit which is adopted by considering mining of mine waste materials such as granite and the like or stone processing in stone processing factories for processing stone slabs. Whether the grinding and mining machine can be popularized and applied in mines in future or not, the most core problem to be solved or overcome is the diamond cutter head problem, which is related to two major indexes of equipment efficiency and operation cost of the grinding and mining machine, and the two major indexes are basically controlled by the sharpness and the service life of the cutter head. The equipment efficiency of the grinding and mining machine is mainly controlled by the sharpness of the tool bit, and obviously, the sharper the tool bit is, the higher the equipment efficiency is. The two most important indexes of the operation cost of the grinding and mining machine are a power consumption index and a tool bit consumption index, and the sharpness and the service life of the tool bit are the two most important indexes. The sharper the cutter head is, the higher the grinding and mining machine efficiency is, and the lower the power consumption index is; it should be noted that the tool bit life is the amount of ground ore per unit number of tool bits, not simply the length of the tool bit, and obviously, the tool bit life and the tool bit consumption are inverse to each other. In order to improve the sharpness and the service life of the cutter head, researches are carried out on the aspects of both the manufacturing technology and the use parameters of the cutter head. In terms of manufacturing: aiming at different lithology, different types, shapes, processes and formulas are selected for manufacturing the cutter head, so that the two indexes of the efficiency and the service life of the cutter head are optimal. In the aspect of use, scientific and reasonable grinding and mining parameters are selected, the grinding and mining parameters comprise the linear speed, the feed speed and the feed depth of a cutter head, different grinding and mining parameters are selected for different cutter heads with different lithology so as to improve the efficiency of equipment and reduce the operation cost, and the grinding and mining driving motor, the grinding and mining driving reducer, the walking part driving motor and the grinding and mining oil cylinder are required to be subjected to general disc consideration in the aspects of design and manufacture. In addition, the mineral powder grade ground by different diamond grade tool bits is also different, and the diamond tool bit made of the proper diamond grade is selected according to the requirement of mineral powder grade for mineral separation. Just like applying a coal mining machine to an underground coal mine, the mechanized comprehensive mining of the underground coal mine is popularized in a large area after decades of development. The grinding and mining machine is believed to be popularized and applied to metal and nonmetal mines in the near future.

Figure 8 shows the ore pulp collection device structure diagram of the short wall operation grinding and mining machine of the grinding and mining mode of the utility model. The material of ore pulp collection device 4 is for the soft rubber preparation, sets up baffle 41 above ore pulp collection device 4, and baffle top installation spring 42, the regional installation that the ore pulp directly sprays ore pulp collection device 4 prevents splash soft materials 43.

The collection of the ore pulp firstly considers the direction and the position of the sprayed ore pulp and the sprinkling area, and in order to effectively collect the ore pulp, the rotation direction of the grinding and mining roller 25 should be from bottom to top, so that the ore pulp can be sprayed upwards. If sprayed downward, the slurry will not collect. The direction of slurry injection is tangential to the moment the milling drum 25 leaves the ore body and should be inclined upwardly. In order not to spray the slurry onto the grinding section 2, a slurry collecting means 4 should be installed at the opening between the grinding drum 25 and the front end of the grinding arm 23, and a baffle plate 41 should be provided above it. When the grinding roller 25 grinds the top plate, the baffle plate contacts the top plate to deform, so that a spring 42 is arranged above the baffle plate, and in order to prevent the ore pulp from being sprayed to the baffle plate 41 to reflect out of the ore pulp collecting device 4, a splash-proof soft material 43 is arranged at the area where the ore pulp is directly sprayed to the ore pulp collecting device 4. The ore pulp collecting device 4 is made of soft rubber, because the ore grinding arm 23 can drive the ore pulp collecting device 4 to move up and down in the up-and-down operation, and the ore pulp collecting device is made of the soft rubber, so that even if the ore body around is touched, the deformation of the ore pulp collecting device can not be worried about.

Fig. 9 is a plan view showing a construction sequence of the short wall working milling and mining machine of a main frame single-layer fixed structure or a main frame upper-lower two-layer left-right translation structure. Because a space needs to be reserved between the adjacent rollers of the grinding and mining roller 25 to be connected with the grinding and mining arm 23, when the grinding and mining roller 25 grinds a mine body, an ore stack is left in the middle area because grinding and mining cannot be carried out, and when the grinding and mining depth reaches the most protruding part in the middle of the grinding and mining roller 25, forward grinding and mining cannot be carried out continuously. At this time, the left and right horizontal positions of the grinding and mining roller 25 are moved to dispose the ore stack so as to continue grinding and mining forwards. Taking roadway construction as an example, in fig. 9, the grinding and mining machine starts grinding and mining operation from a working face of a construction roadway, two grinding and mining rollers firstly form a ground goaf of the construction roadway according to a construction sequence (1), and then, for the grinding and mining machine with a main frame single-layer fixed structure, the walking part 3 retreats to adjust the track direction so that the grinding and mining rollers 25 align with a reserved ore stack and move forward to the right position to start grinding and mining, so that the ground goaf shown in the construction sequence (2) is formed; for the grinding and mining machine with the upper layer, the lower layer and the left-right translation structure of the main frame, equipment does not need to retreat, the upper layer structure 101 of the main frame can be translated through the translation oil cylinder 103, the grinding and mining roller 25 is aligned with the reserved ore stack to start grinding and mining, and a grinding and mining area shown in the construction sequence (2) is formed. And the tunnel is pushed forward in sequence according to the sequence and the method to form a tunnel with a square section.

FIG. 10 is a plan view showing the construction sequence of the short wall working milling and mining machine with a structure of rotating left and right at two levels above and below the main frame. The construction sequence is similar to that shown in fig. 9, except that alternate milling is achieved by rotating the main frame superstructure 101 from side to side. It should be noted here that the distance between adjacent rollers is required to be smaller than the length of the rollers by a certain value, and the left-right rotation angle is required to be adjusted well, so as to ensure that the grinding and mining overlapping area of the rollers is small, no dead angle which can not be ground and mined exists in a roadway working face, and prevent the formation of mineral stubbles.

The utility model relates to a grind shortwall operation of adopting mining mode and grind the mining machine and mainly be applied to: tunneling a roadway in an ore body, grinding and mining the ore body in layers, grinding and mining the ore body comprehensively or by a room-column method, grinding and mining corner ore bodies and the like.

Claims (10)

1. The utility model provides a short wall operation of mining mode is ground and is adopted machine which characterized in that: the device comprises a main frame (1), a grinding and mining part (2), a walking part (3), a water spraying and pulp making device, an ore pulp collecting device (4), an ore pulp pumping system (5), an electrical system (6), a hydraulic system (7) and a cooling system (8); the main frame (1) is of a single-layer fixed structure; the grinding and mining part (2) comprises a grinding and mining driving motor (21), a grinding and mining driving reducer (22), a grinding and mining arm (23), a grinding and mining oil cylinder (24) and a grinding and mining roller (25), the grinding and mining roller (25) is a diamond tool, the grinding and mining arm (23) is rotatably arranged at the upper end of the front part of the main frame (1) through a grinding and mining pin shaft (26), the lower part of the grinding and mining part (2) is also connected with the main frame through the grinding and mining oil cylinder (24), and the grinding and mining arm (23) can be pulled to swing to drive the grinding and mining roller (25) to grind and mine ore bodies when the grinding and mining oil cylinder stretches out and draws back; the walking parts (3) are fixedly arranged on two sides of the main rack so as to drive the whole equipment to walk, and the walking parts (3) are in a crawler type; the water spraying and slurry making device comprises an external water spraying device (9) and an internal water spraying device (10); the upper opening of the ore pulp collecting device (4) is arranged at an opening between the grinding and mining roller (25) and the front end of the grinding and mining arm (23), and the lower opening is connected with the ore pulp pumping system (5) through a hose; the ore pulp pumping system (5) comprises a water pump motor (51), a water pump (52), an electric hose winch (53) and an ore pulp conveying hose (54), wherein the water pump (52) is a slurry pump, the ore pulp collected by the ore pulp collecting device (4) is sucked into an input port of the ore pulp pumping system (5), and the ore pulp can be directly or indirectly conveyed into ore dressing equipment or reground for re-dressing at the output end of the ore pulp pumping system (5); and the cooling system (8) is used for water cooling of the equipment motor and providing pressure water for the water spraying and slurry making device.

2. A short wall working milling and mining machine of milling and mining type according to claim 1, characterized in that: the other form of the main frame (1) is an upper-lower two-layer structure and comprises a main frame upper-layer structure (101) and a main frame lower-layer structure (102), the main frame upper-layer structure is connected with the grinding and mining part (2), and the main frame lower-layer structure is fixed with the left side and the right side of the walking part (3); a plurality of carrier rollers (104) are arranged in the region of the main frame lower layer structure (102) corresponding to the main frame upper layer structure (101), and the main frame upper layer structure (101) can translate left and right on the carrier rollers (104); four translation oil cylinders (103) are arranged at four corners of the main frame upper layer structure (101), the cylinder ends of the translation oil cylinders are connected with and firmly fixed to the main frame upper layer structure (101), the piston rod ends of the translation oil cylinders (103) are connected with the main frame lower layer structure (102), the end parts of the piston rods are firmly fixed, the translation oil cylinders (103) can drive the main frame upper layer structure (101) to horizontally move left and right on the carrier roller (104) relative to the main frame lower layer structure (102), and the maximum moving distance is not less than the length of one grinding roller.

3. A short wall working milling and mining machine of milling and mining type according to claim 1, characterized in that: the third form of the main frame (1) is still an upper-lower two-layer structure and comprises a main frame upper-layer structure (101) and a main frame lower-layer structure (102), the main frame upper-layer structure is connected with the grinding and mining part (2), and the main frame lower-layer structure is fixed with the left side and the right side of the walking part (3); a rotating shaft (105) is arranged at the center of the upper structure (101) of the main frame, and the upper structure (101) of the main frame can rotate around the rotating shaft (105) relative to the lower structure (102) of the main frame; arranging a rotary gear (106) on the outer ring of the rotary shaft (105), wherein the rotary gear is fixed with the upper layer structure (101) of the main frame; rotary oil cylinders (107) are arranged on two sides of a rotary gear (106), cylinder ends of the rotary oil cylinders are connected with a lower layer structure (102) of a main frame, piston rods of the rotary oil cylinders (107) are in a rack form, racks of the piston rods are meshed with the rotary gear (106), the telescopic action of the piston rods of the rotary oil cylinders (107) can drive the upper layer structure (101) of the main frame to horizontally rotate left and right around a rotary shaft (105) relative to the lower layer structure (102) of the main frame, and the left and right maximum rotation angles meet the condition that left and right grinding cylinders are intersected in a central line.

4. A short wall working milling and mining machine of milling and mining type according to any one of claims 1 to 3, characterized in that: the number of the grinding rollers (25) is 2 or more than 2, the lengths of all the rollers are equal, and the distance between every two adjacent rollers is equal to or slightly smaller than the length of the rollers.

5. A short wall operation milling and mining machine for milling and mining mode according to claim 4, characterized in that: the grinding and mining roller (25) comprises a roller base body (251) and a cutter head (252), wherein the roller base body is made of thin steel or aluminum alloy light materials, and the cutter head is made of sintered diamonds.

6. A short wall working milling and mining machine of milling and mining type according to claim 5, characterized in that: the mode that the cutter head (252) is fixed on the roller base body (251) is direct welding, the welding method is divided into integral sintering, laser welding or high-frequency welding, and the roller base body (251) is required to be made of thin steel.

7. A short wall working milling and mining machine of milling and mining type according to claim 5, characterized in that: the cutter head (252) is welded on the base block firstly and then fixed on the cutter head seat of the roller base body (251), and the roller base body (251) is made of thin steel or aluminum alloy light materials.

8. A short wall operation milling and mining machine for milling and mining mode according to claim 6 or 7, characterized in that: the tool bits (252) are arranged on the surfaces of the side wall and the two end walls of the roller base body (251), the tool bits on the side wall are arranged in a straight line, oblique lines, spiral lines or staggered forms, the tool bits on the two end walls are arranged at intervals, and the tool bits at the intersection parts of the side wall and the end walls are in arc transition.

9. A short wall working milling and mining machine of milling and mining type according to any one of claims 1 to 3, characterized in that: the nozzles of the external water spraying devices (9) are arranged at the front ends of the grinding and mining arms (23) and behind the grinding and mining roller (25), the nozzles of the internal water spraying devices (10) are respectively arranged on the surfaces of the side wall and the end wall of the roller base body (251), and the water spraying function is used for cooling the cutter head besides the function of manufacturing ore pulp.

10. A short wall working milling and mining machine of milling and mining type according to any one of claims 1 to 3, characterized in that: the material of ore pulp collection device (4) is the soft glue skin preparation, and ore pulp collection device (4) top sets up baffle (41), and baffle top installation spring (42), and the regional installation of ore pulp direct injection ore pulp collection device (4) is prevented splashing soft materials (43).

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