CN220101278U - Particle impact coupling abrasive air jet cutter-free tunneling machine - Google Patents
Particle impact coupling abrasive air jet cutter-free tunneling machine Download PDFInfo
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- CN220101278U CN220101278U CN202321642432.3U CN202321642432U CN220101278U CN 220101278 U CN220101278 U CN 220101278U CN 202321642432 U CN202321642432 U CN 202321642432U CN 220101278 U CN220101278 U CN 220101278U
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- 239000002245 particle Substances 0.000 title claims abstract description 153
- 230000008878 coupling Effects 0.000 title claims abstract description 8
- 238000010168 coupling process Methods 0.000 title claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 8
- 230000005641 tunneling Effects 0.000 title abstract description 32
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000000227 grinding Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 239000003082 abrasive agent Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 57
- 239000010959 steel Substances 0.000 abstract description 57
- 239000011435 rock Substances 0.000 abstract description 37
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- 229910000997 High-speed steel Inorganic materials 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 15
- 238000004064 recycling Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 10
- 239000002893 slag Substances 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 6
- 239000000956 alloy Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009975 flexible effect Effects 0.000 description 3
- 229910000914 Mn alloy Inorganic materials 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of tunneling, and relates to a particle impact coupling abrasive air jet cutter-free tunneling machine which comprises an air compressor, a high-pressure gas storage cylinder, an abrasive tank, a low-pressure abrasive air jet nozzle, a vacuum pump, a particle bin, a drill boom, a hydraulic system, a deslagging system, a control room and the like. And determining the relative position by utilizing the positioning measurement of a total station and inputting the coordinate parameters of the laser guiding and sensing prism measuring equipment into a computer, controlling the drill boom to automatically calibrate according to a preset scheme, performing low-pressure abrasive air jet rock breaking and lancing, unloading the local stress of surrounding rock, and controlling the drill boom to perform high-speed steel ball particle impact rock breaking. And (3) carrying out preparation work of particle filling and vacuumizing in a gap of impact rock breaking, and realizing replacement and use of the particle accelerating tube through rotating teeth. Finally, the broken stone, the steel ball particles and the abrasive are conveyed to a conveyor belt through a bucket and a star wheel, and the abrasive and the steel ball particles are recovered through a vibration screen and a magnetic conveyor belt, so that the cutter-free tunneling is realized.
Description
Technical Field
The utility model belongs to the technical field of rock tunneling, and particularly relates to a cutter-free tunneling machine with particle impact coupled with abrasive air jet.
Background
At present, the tunneling method mainly comprises a drilling and blasting method, a shield method and a heading machine method. The drilling and blasting method firstly utilizes explosives to break rock, and then uses mechanical equipment to clean the broken rock, but the method has the problems of low automation degree, poor safety, environmental pollution and the like. The shield method is a tunneling method by using a shield machine, cutter damage is one of the most important factors influencing tunneling efficiency and construction cost, and engineering accidents such as instability of a tunneling surface, tunnel collapse and the like are easily caused by opening and changing a cutter, so that construction risks and cost are increased; meanwhile, the working time of shield machine cutter inspection, replacement, cutter holder maintenance and the like is about 30% -40% of the total tunneling construction time. The heading machine method is a method for tunneling by using mechanical equipment such as an excavator, a heading machine and the like, has the outstanding advantages of rapid construction, high quality, safety, economy, environmental protection and the like, and has the problems of high production difficulty, rapid abrasion, low energy utilization rate and the like of a cutting head of the heading machine. Therefore, the abrasion of the cutter head of the shield machine and the cutting bit of the heading machine is a main problem for inhibiting the heading efficiency; in addition, the rock breaking degree in the tunneling process of the two methods is high, and the newly increased surface area is large, so that the energy utilization rate is low.
In order to improve rock breaking efficiency, the patent No. CN201910561800.3 discloses a shield tunneling machine and a water jet combined cutter rock breaking mechanism thereof, wherein annular kerfs are cut on rocks by utilizing high-pressure water jet, surrounding rock local stress is unloaded, and then rock breaking is carried out by a cutter, but jet pressure exceeding 200MPa is needed in hard rock tunneling, so that requirements on system equipment performance and safety are high, and meanwhile abrasion of the cutter cannot be avoided. The patent No. CN202310033395.4 discloses a cantilever tunneling machine and a construction method thereof, which improves the tunneling capability of the cantilever tunneling machine, but the difficult problem of pick wear is not solved effectively. The efficient tool-free rock breaking technology is a development trend of future tunneling, so the utility model provides a novel tool-free tunnel boring machine for breaking rock by utilizing particle impact and low-pressure abrasive air jet flow.
Disclosure of Invention
The utility model aims to provide a cutter-free tunneling machine with particle impact coupled with abrasive air jet, which can effectively improve the tunneling efficiency of hard rock and avoid cutter abrasion.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the particle impact coupling abrasive air jet cutter-free tunneling machine comprises an air compressor, a high-pressure air storage cylinder connected with an outlet pipeline of the air compressor, a high-pressure air storage cylinder outlet communicated with an air inlet of an abrasive cylinder through the high-pressure pipeline, an abrasive outlet of the abrasive cylinder communicated with a low-pressure abrasive air jet nozzle through an abrasive injection pipeline, the low-pressure abrasive air jet nozzle fixed on a propelling beam, the propelling beam movably connected with a telescopic arm through a rotating shaft, the telescopic arm controlling telescopic swing by a control room and controlling pitching angle by a hydraulic system, a particle impact system arranged at the front end of the control room below the low-pressure abrasive air jet nozzle and comprising a high-pressure rubber pipe connected with an air outlet pipeline of the high-pressure air storage cylinder and a Laval nozzle positioned at the tail end of the high-pressure rubber pipe,the tail end of the Laval nozzle is also provided with a particle accelerating tube, the Laval nozzle is connected with the particle accelerating tube through a rotary joint, a vacuum pump is arranged on a pipeline at the outlet of the Laval nozzle, a first electromagnetic valve is arranged on the pipeline of the vacuum pump, a particle discharging tube is arranged at the joint of the Laval nozzle and the particle accelerating tube, the particle discharging tube is vertically arranged, the top of the particle discharging tube is abutted against a thread groove of a push rod of the spiral feeder, a particle bin is further arranged at the upper part of the push rod of the spiral feeder, and the particle bin is controlled by a second electromagnetic valve; the air compressor, the high-pressure gas storage cylinder, the grinding tank, the control room, the hydraulic system, the telescopic arm, the propelling beam and the particle impact system are integrated at the top of the frame, the frame is also provided with a slag removal system, and wheels are arranged at the bottom of the frame; the boom may pitch from plus 60 ° to minus 30 °, and swing from plus 45 ° to minus 45 °. The propelling beam is connected with the drill boom through the rotating shaft, can horizontally and axially rotate 360 degrees, is flexible in action and has no dead angle in construction. The telescopic boom is of a three-section telescopic structure, the stroke of the telescopic boom is 2.5m, the operation width is 16m, the height is 11m, and the maximum coverage area can reach 154m 2 。
The Laval nozzle is further communicated with a particle accelerating tube, a plurality of horizontal accelerating pipelines are arranged in the particle accelerating tube, the accelerating pipelines are made of high-hardness manganese alloy materials, and the length of the accelerating pipelines is 3m, so that steel ball particles are fully accelerated; the steel ball particles are hard alloy materials, two gears meshed with each other are arranged in the rotary joint, a circle of round holes are formed in the circumferential edge of the large gear body, one end of each round hole is communicated with the interior of the Laval nozzle, the other end of each round hole is connected with an accelerating pipeline in the particle accelerating pipe, the pinion is driven by a motor and is communicated with the Laval nozzle through different pipelines replaced by meshed rotation, a push rod of the spiral feeder is driven by the motor, the Laval nozzle is connected with a frame through a drill boom, a hydraulic system is arranged on the drill boom, the end part of the drill boom is connected with the frame through a drill boom base, and a cover plate is further arranged on the end part of the Laval nozzle.
Further, the deslagging system comprises a bucket positioned at the bottom of the particle impact system, a star wheel is arranged in the bucket, a conveyor belt positioned at the outlet of the bucket is provided with a vibrating screen at the outlet of the conveyor belt, an abrasive recovery box is arranged at the bottom of the vibrating screen, a magnetic conveyor belt is arranged at the tail end of the vibrating screen, a slag conveying vehicle is arranged at the tail end of the magnetic conveyor belt, a steel ball particle recovery box is arranged at the bottom of the magnetic conveyor belt, a scraper is arranged between the steel ball particle recovery box and the magnetic conveyor belt, broken stone, abrasive and steel ball particles are conveyed to the conveyor belt through the bucket and the star wheel, the abrasive is separated through the vibrating screen, and the abrasive is recycled in the abrasive recovery box; the broken stone is conveyed to the slag conveying vehicle through the magnetic conveying belt to be conveyed out, the steel ball particles are adsorbed on the magnetic conveying belt, when the steel ball particles are conveyed to the lower part of the magnetic conveying belt, the scraping plate on the steel ball particle recycling bin scrapes the steel ball particles down and falls into the steel ball particle recycling bin, and recycling of the steel ball particles is completed.
Further, the abrasive tank comprises a hopper, two abrasive barrels arranged side by side are arranged at the bottom of the hopper, abrasive is conveyed between the hopper and the abrasive barrels through a feeding pipeline, a vibration blanking device and an air cylinder are arranged on the feeding pipeline, a collecting hopper is arranged at the bottom of the two abrasive barrels, a horizontal spiral feeder is arranged at a blanking opening of the collecting hopper, the spiral feeder is driven by a motor, and the tail end of the spiral feeder is converged to an abrasive injection pipeline with a gas pipeline from a high-pressure gas storage bottle.
Furthermore, a hydraulic support is also arranged below the control room, the control room can be lifted or lowered so as to observe a construction surface better, two sides of the rear of the frame are respectively provided with a prism, and the whole rear of the frame is provided with a total station.
Further, the low-pressure abrasive air jet nozzle comprises an inlet and an outlet, the inner wall of the nozzle is sequentially provided with a converging section and a diverging section, the inlet of the nozzle is of a circular structure, the outlet of the nozzle is of a rectangular structure with the diameter of 4mm multiplied by 20mm, the gas jet of the converging section is accelerated to sonic velocity, the gas jet further expands and accelerates to 700m/s in the diverging section, and the hypersonic air jet accelerates the abrasive to more than 300 m/s.
Further, a first valve is arranged between the air compressor and the high-pressure air bottle, and a pressure gauge and a second valve are arranged on a pipeline between the high-pressure air bottle and an outlet pipeline of the screw feeder.
The tunneling method of the particle impact coupling abrasive air jet cutter-free tunneling machine comprises the following steps of:
s1, drawing a cutting seam and particle impact rock breaking planning chart by software, importing the cutting seam and particle impact rock breaking planning chart into a computer by means of a mobile storage device, positioning the device, and supporting a frame;
s2, positioning and measuring a total station, accurately measuring equipment coordinate parameters through a laser guiding device and sensing prisms on the left side and the right side of the cutter-free tunnel boring machine, inputting a measurement result into an onboard computer, and determining the relative position of the whole machine on a tunnel section; the operator inputs the measurement coordinates to the computer, and the computer control equipment automatically calibrates and operates according to a preset scheme;
s3, checking the air tightness of the pipeline and the interface, closing all valves after confirming that the air tightness is correct, opening an air inlet ball valve of the high-pressure air storage cylinder, starting an air compressor, setting parameters of the air compressor, stopping the operation of the air compressor when the pressure is 8Mpa, and automatically pressurizing when the pressure is lower than 8 Mpa; when the pressure of the high-pressure gas cylinder reaches 8Mpa, an air inlet ball valve of the grinding material tank is opened, and the outlet pressure of the ball valve is regulated to be 2Mpa;
s4, starting a motor of the spiral feeder of the grinding material tank; opening a hopper to feed abrasive to a right abrasive barrel, and simultaneously opening a right vibration blanking device and a cylinder; controlling the feeding speed of the screw feeder through a motor, observing the allowance of the abrasive through a window of the collecting hopper, and after the abrasive of the abrasive barrel is used up, starting a left valve of the hopper, a left vibration feeder and a cylinder, switching the operation of the left abrasive barrel, and realizing the cyclic operation of the two-side abrasive barrels to ensure the continuous supply of the abrasive;
s5, a drilling arm, a telescopic arm, a hydraulic system, a rotating shaft and a propelling beam are controlled by a computer to be matched, low-pressure abrasive air jet lancing is carried out according to a preset scheme, dmm multiplied by Lmm grooves are cut on a rock surface, and after lancing work is completed, a grinding tank and a ball valve are sequentially closed;
s6, starting an electromagnetic valve of a particle bin, and enabling particles to enter a spiral push rod; starting a motor of the particle bin, driving the spiral push rod to rotate, and screwing the steel ball particles into the particle accelerating pipeline; closing the electromagnetic valve of the particle bin, starting the electromagnetic valve of the vacuum pump and the vacuum pump, and vacuumizing the particle accelerating pipeline;
s7, a computer controls the drill boom, the telescopic boom, the hydraulic system, the rotating shaft and the propelling beam to be matched, and the particle accelerating pipeline is sent to a designated position according to a preset scheme; observing the number of the pressure gauge, when the pressure gauge reaches 8Mpa, opening the ball valve, accelerating high-pressure gas to supersonic speed through the Laval nozzle, and pushing steel ball particles to accelerate; the spring cover plate is opened, and the steel ball particles are ejected to crush the rock mass; carrying out preparation work of particle filling and vacuumizing in a gap of a particle accelerating pipeline reaching the next position; starting a motor for rotating teeth, and driving a large gear to rotate by rotation of a small gear to realize replacement of the particle accelerating tube;
s8, conveying crushed rock blocks, abrasive materials and steel ball particles to a conveyor belt through a bucket and a star wheel, separating the abrasive materials through a vibration screen, and falling into an abrasive material recovery box; the broken stone is conveyed to a slag conveying vehicle through a magnetic conveying belt to be conveyed out, steel ball particles are adsorbed on the magnetic conveying belt, when the steel ball particles are conveyed to the lower part of the magnetic conveying belt, a scraper on a steel ball particle recovery box scrapes the steel ball particles down and falls into the steel ball particle recovery box, recycling of the steel ball particles is completed, and step S1-S8 is repeated to realize cutter-free tunneling.
The utility model has the advantages that:
1. the novel cutter-free tunnel boring machine firstly uses abrasive air jet to break the rock for slitting, unloads local stress of surrounding rock, and then uses particles to impact the broken rock for tunneling, so that the tunneling efficiency of hard rock is improved;
2. the novel cutter-free tunnel boring machine is provided with the steel ball particle and abrasive recycling device, so that the steel ball particle and abrasive are recycled, the material waste is reduced, and the tunnel boring machine is more environment-friendly;
3. the novel cutter-free tunnel boring machine realizes replacement use of the particle accelerating pipeline by utilizing the gear transmission device, and reduces abrasion of the particle accelerating pipeline;
4. the novel cutter-free tunnel boring machine utilizes the cooperation of the drill boom, the telescopic boom, the hydraulic system, the rotating shaft, the propelling beam and the like, can select different lancing methods according to different sections, and has flexible action and no dead angle in construction.
Drawings
FIG. 1 is a schematic diagram of the structure of the cutter-less tunnel boring machine of the present utility model.
Fig. 2 is a schematic view of a particle impact system according to the present utility model.
Fig. 3 is a schematic diagram of a star wheel structure according to the present utility model.
Fig. 4 is a schematic view of the structure of the transfer tooth in the present utility model.
Fig. 5 is a schematic view of the structure of the abrasive pot according to the present utility model.
FIG. 6 is a schematic view of a low pressure abrasive air jet nozzle of the present utility model.
Fig. 7 is a schematic diagram of a rock breaking plan in an embodiment of the utility model.
Detailed Description
As shown in the figure, the particle impact coupling abrasive air jet cutter-free tunneling machine comprises an air compressor 1, a high-pressure air bottle 3 connected with an outlet pipeline of the air compressor, wherein an outlet of the high-pressure air bottle is communicated with an air inlet of an abrasive tank 6 through the high-pressure pipeline, an abrasive outlet of the abrasive tank is communicated with a low-pressure abrasive air jet nozzle 10 through an abrasive injection pipeline, the low-pressure abrasive air jet nozzle comprises an inlet 50 and an outlet 53, a convergent section 51 and an expansion section 52 are sequentially arranged on the inner wall of the nozzle, the inlet of the nozzle is of a circular structure, the outlet of the nozzle is of a rectangular structure with the diameter of 4mm multiplied by 20mm, the gas jet of the convergent section is accelerated to sonic velocity, the gas jet is further expanded and accelerated to 700m/s in the expansion section, and the high-ultrasonic air jet accelerates the abrasive to more than 300 m/s. The particle impact system is arranged at the front end of the control chamber below the low-pressure abrasive air jet nozzle and comprises a high-pressure rubber tube connected with an air outlet pipeline of the high-pressure air storage cylinder and a Laval nozzle 36 positioned at the tail end of the high-pressure rubber tube, a particle accelerating tube 29 is further arranged at the tail end of the Laval nozzle, and a particle accelerating tube 29 is arranged between the Laval nozzle and the particle accelerating tubeThe vacuum pump 34 is arranged on a pipeline at the outlet of the nozzle of the Laval nozzle through a rotary joint, the first electromagnetic valve 35 is arranged on the pipeline of the vacuum pump outlet, a particle discharging pipe is arranged at the joint of the Laval nozzle and the particle accelerating pipe, the particle discharging pipe is vertically arranged, the top of the particle discharging pipe is abutted against a thread groove of the push rod 26 of the spiral feeder, the upper part of the push rod of the spiral feeder is also provided with a particle bin 32, and the particle bin is controlled by the second electromagnetic valve 33; the air compressor, the high-pressure gas storage cylinder, the grinding tank, the control room, the hydraulic system, the telescopic arm, the propelling beam and the particle impact system are integrated at the top of the frame 19, the frame is also provided with a slag removal system, and wheels are arranged at the bottom of the frame. Further, the laval nozzle is communicated with a particle accelerating tube 29, a plurality of horizontal accelerating pipelines are arranged in the particle accelerating tube, the accelerating pipelines are made of high-hardness manganese alloy materials, and the length of the accelerating pipelines is 3m, so that steel ball particles are fully accelerated; the steel ball particles are made of hard alloy materials, two gears meshed with each other are arranged in the rotary joint, a circle of round holes 39 are formed in the circumferential edge of a large gear 38 body, one end of each round hole is communicated with the interior of a Laval nozzle, the other end of each round hole is connected with an accelerating pipeline in the particle accelerating pipeline, a pinion 40 is driven by a first motor 27 and is communicated with the Laval nozzle by replacing different pipelines through meshed rotation, a push rod 26 of the screw feeder is driven by a second motor 31, the Laval nozzle is connected with a frame through a drill boom 25, the drill boom is provided with a hydraulic system 24, the end part of the drill boom is connected with the frame through a drill boom base 23, and a cover plate 30 is further arranged at the end part of the Laval nozzle; the drill boom 25 can pitch from plus 60 degrees to minus 30 degrees, and swing from plus 45 degrees to minus 45 degrees, the propelling beam is connected with the drill boom through a rotating shaft, and can rotate horizontally and axially by 360 degrees, so that the action is flexible, and no dead angle exists in construction. The telescopic boom is of a three-section telescopic structure, the stroke of the telescopic boom is 2.5m, the operation width is 16m, the height is 11m, and the maximum coverage area can reach 154m 2 . A hydraulic support 21 is also arranged below the control room, the control room can be lifted or lowered so as to observe a construction surface better, two sides of the rear of the frame are respectively provided with a prism 20, and the whole rear of the frame is provided with a total station 22. The deslagging system comprises a bucket 12 positioned at the bottom of the particle impact system, a star wheel 37 is arranged in the bucket, and a conveyor belt positioned at the outlet of the bucket13, a vibrating screen 14 is arranged at the outlet of the conveyor belt, an abrasive recovery box 15 is arranged at the bottom of the vibrating screen, a magnetic conveyor belt 18 is arranged at the tail end of the vibrating screen, a slag conveying vehicle is arranged at the tail end of the magnetic conveyor belt, a steel ball particle recovery box 17 is arranged at the bottom of the magnetic conveyor belt, a scraper 16 is arranged between the steel ball particle recovery box and the magnetic conveyor belt, broken stone, abrasive and steel ball particles are conveyed to the conveyor belt through a bucket and a star wheel, the abrasive is separated through the vibrating screen, and the abrasive falls into the abrasive recovery box to finish recycling of the abrasive; the broken stone is conveyed to the slag conveying vehicle through the magnetic conveying belt to be conveyed out, the steel ball particles are adsorbed on the magnetic conveying belt, when the steel ball particles are conveyed to the lower part of the magnetic conveying belt, the scraping plate on the steel ball particle recycling bin scrapes the steel ball particles down and falls into the steel ball particle recycling bin, and recycling of the steel ball particles is completed. The abrasive tank comprises a hopper 41, two abrasive barrels 44 which are arranged side by side are arranged at the bottom of the hopper, abrasive materials are conveyed between the hopper and the abrasive barrels through a feeding pipeline, a vibration blanking device 43 and an air cylinder 49 are arranged on the feeding pipeline, a collecting hopper 45 is arranged at the bottom of each abrasive barrel, a horizontal spiral feeder 47 is arranged at a blanking opening of each collecting hopper, the spiral feeders are also driven by a third motor 46, the tail ends of the spiral feeders and a gas pipeline from a high-pressure gas storage bottle are converged to an abrasive material injection pipeline, a first window 42 is arranged on the hopper, and a second window 48 is arranged on the collecting hopper and is used for observing the material quantity in the hopper.
A tunneling method of a particle impact coupled abrasive air jet cutter-free tunneling machine comprises the following steps:
s1, drawing a cutting seam and particle impact rock breaking planning chart by software, importing the cutting seam and particle impact rock breaking planning chart into a computer by means of a mobile storage device, positioning the device, and supporting a frame;
s2, positioning and measuring a total station, accurately measuring equipment coordinate parameters through a laser guiding device and sensing prisms on the left side and the right side of the cutter-free tunnel boring machine, inputting a measurement result into an onboard computer, and determining the relative position of the whole machine on a tunnel section; the operator inputs the measurement coordinates to the computer, and the computer control equipment automatically calibrates and operates according to a preset scheme;
s3, checking the air tightness of the pipeline and the interface, closing all valves after confirming that the air tightness is correct, opening an air inlet ball valve of the high-pressure air storage cylinder, starting an air compressor, setting parameters of the air compressor, stopping the operation of the air compressor when the pressure is 8Mpa, and automatically pressurizing when the pressure is lower than 8 Mpa; when the pressure of the high-pressure gas cylinder reaches 8Mpa, an air inlet ball valve of the grinding material tank is opened, and the outlet pressure of the ball valve is regulated to be 2Mpa;
s4, starting a motor of the spiral feeder of the grinding material tank; opening a hopper to feed abrasive to a right abrasive barrel, and simultaneously opening a right vibration blanking device and a cylinder; controlling the feeding speed of the screw feeder through a motor, observing the allowance of the abrasive through a window of the collecting hopper, and after the abrasive of the abrasive barrel is used up, starting a left valve of the hopper, a left vibration feeder and a cylinder, switching the operation of the left abrasive barrel, and realizing the cyclic operation of the two-side abrasive barrels to ensure the continuous supply of the abrasive;
s5, a drilling arm, a telescopic arm, a hydraulic system, a rotating shaft and a propelling beam are controlled by a computer to be matched, low-pressure abrasive air jet lancing is carried out according to a preset scheme, dmm multiplied by Lmm grooves are cut on a rock surface, local stress of surrounding rock is unloaded, and after lancing work is completed, a grinding tank and a ball valve are sequentially closed;
s6, starting an electromagnetic valve of a particle bin, and enabling particles to enter a spiral push rod; starting a motor of the particle bin, driving the spiral push rod to rotate, and screwing the steel ball particles into the particle accelerating pipeline; closing the electromagnetic valve of the particle bin, starting the electromagnetic valve of the vacuum pump and the vacuum pump, and vacuumizing the particle accelerating pipeline;
s7, a computer controls the drill boom, the telescopic boom, the hydraulic system, the rotating shaft and the propelling beam to be matched, and the particle accelerating pipeline is sent to a designated position according to a preset scheme; observing the number of the pressure gauge, when the pressure gauge reaches 8Mpa, opening the ball valve, accelerating high-pressure gas to supersonic speed through the Laval nozzle, and pushing steel ball particles to accelerate; the spring cover plate is opened, and the steel ball particles are ejected to crush the rock mass; carrying out preparation work of particle filling and vacuumizing in a gap of a particle accelerating pipeline reaching the next position; starting a motor for rotating teeth, and driving a large gear to rotate by rotation of a small gear, so that replacement of a particle accelerating tube is realized, and abrasion of a particle accelerating pipeline is reduced;
s8, conveying crushed rock blocks, abrasive materials and steel ball particles to a conveyor belt through a bucket and a star wheel, separating the abrasive materials through a vibration screen, and falling into an abrasive material recovery box; the broken stone is conveyed to a slag conveying vehicle through a magnetic conveying belt to be conveyed out, steel ball particles are adsorbed on the magnetic conveying belt, when the steel ball particles are conveyed to the lower part of the magnetic conveying belt, a scraper on a steel ball particle recovery box scrapes the steel ball particles down and falls into the steel ball particle recovery box, recycling of the steel ball particles is completed, and step S1-S8 is repeated to realize cutter-free tunneling.
In specific use, the pre-drawn broken rock planning diagram is led into a computer of the control room 7, and the frame 19 is supported after the whole machine is in place. The total station 22 is used for positioning measurement, the coordinate parameters of the equipment are accurately measured through the laser guiding device and the sensing prisms 20 on two sides of the whole machine, the measurement result is input into a computer, and the computer control equipment is automatically calibrated. And opening the air compressor 1, setting parameters of the air compressor, stopping working of the air compressor when the pressure is 8Mpa, and automatically pressurizing when the pressure is lower than 8 Mpa. When the pressure of the high-pressure gas cylinder reaches 8Mpa, the second ball valve 5 is opened, the outlet pressure of the ball valve is adjusted to 2Mpa, the third motor of the screw feeder 47 is opened, the hopper 41 is opened to feed the grinding material into the right grinding material barrel 44, and the right vibration blanking device 43 and the cylinder 49 are opened. The feeding speed of the spiral feeding device is controlled through the motor, the allowance of the abrasive is observed through a window of the collecting hopper 45, after the abrasive in the abrasive barrel on the right side of the hopper is used up, the left valve of the hopper, the left vibration blanking device 43 and the air cylinder 49 are started, the operation of the left abrasive barrel is switched, and the circulation operation of the two-side abrasive barrels is realized, so that the continuous abrasive supply is ensured. The control room 7 controls the drill boom 25, the hydraulic system 24, the rotating shaft 8 and the propelling beam 9 to carry out low-pressure abrasive air jet lancing according to a preset scheme, and local stress of surrounding rock is unloaded. After the slitting work is completed, the grinding material tank 6 and the ball valve 5 are closed in sequence. The second electromagnetic valve 33 of the particle bin 32 is started, the steel ball particles enter the screw 26, the motor 31 is started to drive the screw to rotate, the steel ball particles are screwed into the particle accelerating pipeline 29, and the electromagnetic valve 33 is closed. The solenoid valve 35 and the vacuum pump 34 of the vacuum pump are started, and at this time, the particle acceleration pipe 29 forms a closed space under the action of the second solenoid valve 33, the first solenoid valve 35, the third solenoid valve 11 and the spring cover plate 30, and the vacuum pump evacuates the particle acceleration pipe into a vacuum state. The control room 7 controls the drill boom 25, the hydraulic system 24, the rotating shaft 8 and the propelling beam 9 to cooperate, and the particle accelerating pipeline 29 is sent to a designated position according to a preset scheme; observing the indication of the pressure gauge 4, when the pressure gauge reaches 8Mpa, opening the third electromagnetic valve 11, accelerating the high-pressure gas to supersonic speed through the Laval nozzle 36, and pushing the steel ball particles to accelerate; the spring cover 30 opens and the steel ball particles shoot out the broken rock mass. Carrying out preparation work of particle filling and vacuumizing in a gap of a particle accelerating pipeline reaching the next position; the motor of the rotary tooth 28 is started, and the pinion 40 rotates to drive the large gear 38 to rotate, so that the replacement of the particle accelerating tube is realized, and the high-temperature danger is prevented. The crushed rock, abrasive and steel ball particles are conveyed to a conveyor belt 13 through a bucket 12 and a star wheel 37, the abrasive is separated through a vibrating screen 14 and falls into an abrasive recovery box 15 to finish the recovery and utilization of the abrasive; the broken stone is conveyed to a slag conveying vehicle through a magnetic conveying belt 18 to be conveyed out, steel ball particles are adsorbed on the magnetic conveying belt 18, when the steel ball particles are conveyed to the lower part of the magnetic conveying belt, a scraper 16 on a steel ball particle recovery box scrapes the steel ball particles down and falls into the steel ball particle recovery box 17, and recycling of the steel ball particles is completed.
Claims (5)
1. A particle impact coupling abrasive air jet cutter-free heading machine is characterized in that: the particle feeding device comprises an air compressor, a high-pressure air bottle connected with an outlet pipeline of the air compressor, a high-pressure air bottle outlet communicated with an air inlet of an abrasive tank through a high-pressure pipeline, an abrasive outlet of the abrasive tank communicated with a low-pressure abrasive air jet nozzle through an abrasive injection pipeline, a low-pressure abrasive air jet nozzle fixed on a propelling beam, a rotating shaft and a telescopic arm movably connected with the propelling beam, the telescopic arm controlled to swing flexibly by a control room and controlled to pitch angle by a hydraulic system, and a particle impact system arranged at the front end of the control room below the low-pressure abrasive air jet nozzle and comprising a high-pressure rubber tube connected with an air outlet pipeline of the high-pressure air bottle and a Laval nozzle located at the tail end of the high-pressure rubber tube, a vacuum pump arranged on the outlet pipeline of the Laval nozzle and connected with the particle acceleration tube through a rotary joint, a particle discharging tube arranged on the outlet pipeline, a screw thread groove of the top of the particle discharging tube and a screw push rod and a screw feeder arranged on the top of the screw push rod, and a second electromagnetic valve for controlling particles.
2. A particle impact coupled abrasive air jet cutter free heading machine as claimed in claim 1 wherein: the utility model discloses a particle accelerator tube, including particle accelerator tube, gear, screw feeder, drill arm, rotary joint, screw feeder, drill arm, frame and apron are equipped with the drill arm, the Laval spray tube is UNICOM with particle accelerator tube, is equipped with a plurality of horizontal pipelines in the particle accelerator tube, is equipped with two intermeshing gears in the rotary joint, and gear body circumference edge is equipped with round hole, round hole one end and the inside UNICOM of Laval spray tube, the other end and the inside pipeline coupling of particle accelerator tube, the push rod of screw feeder is by motor drive, laval spray tube passes through the drill arm and is connected with the frame, and the drill arm tip passes through the drill arm base and links to each other with the frame, laval spray tube tip still is equipped with the apron.
3. A particle impact coupled abrasive air jet cutter free heading machine as claimed in claim 1 wherein: the grinding material tank comprises a hopper, two grinding material barrels which are arranged side by side are arranged at the bottom of the hopper, grinding materials are conveyed between the hopper and the grinding material barrels through a feeding pipeline, a vibration blanking device and an air cylinder are arranged on the feeding pipeline, a collecting hopper is arranged at the bottom of each of the two grinding material barrels, a horizontal spiral feeder is arranged at a blanking opening of each collecting hopper, the spiral feeder is driven by a motor, and the tail end of each spiral feeder is converged to an abrasive material injection pipeline with a gas pipeline from a high-pressure gas storage bottle.
4. A particle impact coupled abrasive air jet cutter free heading machine as claimed in claim 1 wherein: the low-pressure abrasive air jet nozzle comprises an inlet and an outlet, wherein the inner wall of the nozzle is sequentially provided with a converging section and a diverging section, the inlet of the nozzle is of a circular structure, and the outlet of the nozzle is of a rectangular structure of 4mm multiplied by 20 mm.
5. A particle impact coupled abrasive air jet cutter free heading machine as claimed in claim 1 wherein: a first valve is arranged between the air compressor and the high-pressure air bottle, and a pressure gauge and a second valve are arranged on a pipeline between the high-pressure air bottle and an outlet pipeline of the screw feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321642432.3U CN220101278U (en) | 2023-06-27 | 2023-06-27 | Particle impact coupling abrasive air jet cutter-free tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321642432.3U CN220101278U (en) | 2023-06-27 | 2023-06-27 | Particle impact coupling abrasive air jet cutter-free tunneling machine |
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| Publication Number | Publication Date |
|---|---|
| CN220101278U true CN220101278U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321642432.3U Active CN220101278U (en) | 2023-06-27 | 2023-06-27 | Particle impact coupling abrasive air jet cutter-free tunneling machine |
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| Country | Link |
|---|---|
| CN (1) | CN220101278U (en) |
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2023
- 2023-06-27 CN CN202321642432.3U patent/CN220101278U/en active Active
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