SE2130147A1 - Eccentric hob type tunneling machine capable of breaking rock according to predetermined path without affecting supporting work - Google Patents
Eccentric hob type tunneling machine capable of breaking rock according to predetermined path without affecting supporting workInfo
- Publication number
- SE2130147A1 SE2130147A1 SE2130147A SE2130147A SE2130147A1 SE 2130147 A1 SE2130147 A1 SE 2130147A1 SE 2130147 A SE2130147 A SE 2130147A SE 2130147 A SE2130147 A SE 2130147A SE 2130147 A1 SE2130147 A1 SE 2130147A1
- Authority
- SE
- Sweden
- Prior art keywords
- hob
- eccentric
- disc
- box
- shaped
- Prior art date
Links
- 239000011435 rock Substances 0.000 title claims abstract description 46
- 230000005641 tunneling Effects 0.000 title claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 239000000956 alloy Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003245 coal Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000005065 mining Methods 0.000 description 8
- 238000005553 drilling Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 241000139306 Platt Species 0.000 description 1
- 101150063503 RAI1 gene Proteins 0.000 description 1
- 101100224844 Schizosaccharomyces pombe (strain 972 / ATCC 24843) din1 gene Proteins 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
- E21D9/104—Cutting tool fixtures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
- E21D9/104—Cutting tool fixtures
- E21D9/1046—Vibrating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1086—Drives or transmissions specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1093—Devices for supporting, advancing or orientating the machine or the tool-carrier
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
TEXT OF THE ABSTRACTDisclosed is an eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work, essentially consisting of a crawler walking mechanism, a rack, a hydraulic pump station, a power box, a sliding guide rail base, a propulsion cylinder I, a sliding seat, a transmission box, hydraulic motors, a hob arm rotating and sliding device, a hob arm, a low-speed high-torque motor, an eccentric disc-shaped hob, a control center, a loading device, a conveying device, a temporary supporting device, and an auxiliary work platform. The present invention is simple, compact and reliable in structure and convenient to assemble and disassemble, makes full use of low tensile strength characteristics of hard rock, and has strong rock breaking capability and high efficiency. The route of breaking rock with a hob can be adjusted according to different sections, and thus the section adaptability is flexible. The disc-shaped hob has a small cutting-based rock breaking load, high performance and high efficiency, and the hob rotates eccentrically, so that the hob can achieve the effect of breaking rock by vibration cutting, thereby further improving the cutting-based rock breaking performance of the hob.
Description
DESCRIPTION ECCENTRIC HOB TYPE TUNNELING MACHINE CAPABLE OFBREAKING ROCK ACCORDING TO PREDETERMINED PATHWITHOUT AFFECTING SUPPORTING WORK BACKGROUND OF THE INVENTION Field of the Inventíon The present invention belongs to the technical field of coal mining, and relates totunneling machinery equipment, and in particular, to an eccentric hob type tunnelingmachine capable of breaking rock according to a predetermined path Without affecting supporting Work.
Description of Related Art In 2018, "BP Statistical Review of World Energy" pointed out that: China is stillthe World"s largest energy consumer, accounting for 232% of global consumptionand 33.6% of global net growth; the consumption of coal resources accounts for 60.4%of the total consumption, and coal resources Will play an irreplaceable role as mainenergy in China for a long period of time in the future. With the increasing demandfor coal energy in China, the imbalance of mining proportion due to the difficulty inrock roadWay tunneling has become the main reason of restricting coal mining inChina. Moreover, noWadays, With the mature application of mechanized coal mining,the mining efficiency has been greatly improved, the imbalance of mining proportionhas become more severe, and hard rock tunneling machinery equipment has becomethe "bottleneck" restricting the coordinated progress of coal mining and roadWaytunneling in mines. Especially for hard rock With Platts hardness coefficient f 2 10,the impact and Wear on a tunneling Work mechanism and mounted tools thereof areincreased during construction, and due to the space limitation, the Workingenvironment of the tunneling equipment is Worse, resulting in that the tunneling Work mechanism has a poorer hard rock tunneling effect and high tunneling costs.
In the prior art, a drilling and blasting method and mechanical pick-based rockbreaking are mostly used for roadWay tunneling in coal mines. Although the drilling and blasting method has high efficiency and strong applicability to strata, this method DESCRIPTION causes large dust and poisonous gas emissions and is prone to major accidents such asgas explosion, and therefore is not conducive to safe, efficient and green mining ofore body resources. Moreover, breaking hard rock with mechanical picks is of greatdifficulty and a heavy load, the picks are easy to be damaged and need to be replacedfrequently, and thus the rock roadway tunneling efficiency is low and the costs arehigh. Underground tests proved that the approach of breaking rock by cutting with picks is difficult to realize economic tunneling of hard rock roadways.
SUMMARY OF THE INVENTION Technical Problem The object of the present invention is to provide an eccentric hob type tunnelingmachine capable of breaking rock according to a predetermined path without affectingsupporting work, which makes full use of the features of a small vibration cutting load,high performance and high efficiency of an eccentric disc-shaped hob, therebyrealizing the quick breaking of hard rock and increasing the roadway tunneling speed of coal mines.
Technical Solution To achieve the above-mentioned object, the present invention adopts thefollowing technical solutions: an eccentric hob type tunneling machine capable ofbreaking rock according to a predetermined path without affecting supporting work,including a crawler walking mechanism, a rack, a hydraulic pump station, a powerbox, a sliding guide rail base, a propulsion cylinder I, a sliding seat, a transmissionbox, a hob arm rotating and sliding device, a hob arm, a low-speed high-torque motor,an eccentric disc-shaped hob, a control box, a loading device, a conveying device, a temporary supporting device, and an auxiliary work platform.
The rack is mounted on the crawler walking mechanism; the hydraulic pumpstation, the power box, the sliding guide rail base, the temporary supporting device,and the auxiliary work platform are all mounted on the rack, wherein the hydraulicpump station and the power box are located at the tail of the rack and arranged in abilaterally symmetrical manner; the sliding guide rail base is located on the front endsof the hydraulic pump station and the power box; the loading device is mounted on the front end of the rack; the conveying device is mounted at the middle of the loading DESCRIPTION device and below the rack; the sliding seat is slidably mounted on the sliding guiderail base, and is connected to the sliding guide rail base through two propulsioncylinders I; the transmission box is mounted on the front end of the sliding seat; twohydraulic motors are symmetrically mounted on a box body of the transmission box;output shafts of the hydraulic motors are connected to transmission box input shafts;gears I mounted on the transmission box input shafts are engaged with gears IImounted on a transmission box output shaft; the hob arm rotating and sliding device ismounted on the front end of the transmission box output shaft; the hob arm rotatingand sliding device includes a housing in a rectangular parallelepiped structure; acylinder mounting plate is fixed to the upper end of the housing; an E-shaped grooveis provided in the housing; the hob arm is inserted in the E-shaped groove andconnected to the cylinder mounting plate through a propulsion cylinder II; thelow-speed high-torque motor is mounted on the front end of the hob arm; and theeccentric disc-shaped hob is eccentrically mounted on the output shaft of the low-speed high-torque motor.
The propulsion cylinders I, the hydraulic motors, the propulsion cylinder II, thetemporary supporting device, and the auxiliary work platform are connected to thehydraulic pump station through hydraulic circuits, respectively; the control box ismounted on the upper end of the power box; and the low-speed high-torque motor and the control box are electrically connected to the power box, respectively.
Further, the eccentric disc-shaped hob includes a circular disc-shaped cutter head;the front end of the circular disc-shaped cutter head is inlaid with a plurality ofmechanical picks; a plurality of alloy heads are welded on the circumference of thecircular disc-shaped cutter head; the rear end of the circular disc-shaped cutter head ismachined with a hole for mounting the output shaft of the low-speed high-torque motor; and a keyway is machined in the hole.
Preferably, the axis of the hole is offset from the axis of the circular disc-shapedcutter head by 2-5 cm, so that the eccentric disc-shaped hob will vibrate to a certain extent in a rotation process.
Preferably, the material of the mechanical picks is hard alloy; the mechanicalpicks are arranged in an Archimedes spiral array on the front end of the circular disc-shaped cutter head, the direction of rotation being counterclockwise.
DESCRIPTION More preferably, the array has 12 Archimedes spirals in total.
Preferably, the material of the alloy heads is hard alloy, and the alloy heads are equidistantly distributed on the circumference of the circular disc-shaped cutter head.
Preferably, the direction of rotation of the low-speed high-torque motor iscounterclockwise, and the load of the mechanical picks during rock breaking can be reduced according to the shape of the spirals in the array of the mechanical picks.
Further, the hob arrn includes an arm body in a rectangular parallelepipedstructure; the front end face of the arrn body is provided with two parallel rectangularguide grooves of equal width; and the hob arm is positioned in the hob arrn rotating and sliding device through the two rectangular guide grooves.
Further, the temporary supporting device consists of four propulsion cylinders IIIand an arched supporting shed; the arched supporting shed is mounted on the upperends of the four propulsion cylinders III; the lower ends of the four propulsioncylinders III are fiXedly mounted on the rack; and the four propulsion cylinders III are connected to the hydraulic pump station through hydraulic circuits, respectively.
Further, the auXiliary work platform consists of four propulsion cylinders IV anda work platform; the work platform is mounted on the upper ends of the fourpropulsion cylinders IV; the lower ends of the four propulsion cylinders IV arefiXedly mounted on the rack; and the four propulsion cylinders IV are connected to the hydraulic pump station through hydraulic circuits, respectively.
Advantageous Effect Compared with the prior art, the present invention has the following beneficial effects: The present invention is simple, compact and reliable in structure and convenientto assemble and disassemble, makes full use of low tensile strength characteristics ofhard rock, and has strong rock breaking capability and high efficiency. The route ofbreaking rock with a hob can be adjusted according to different sections, and thus thesection adaptability is flexible. The disc-shaped hob has a small cutting-based rockbreaking load, high performance and high efficiency, and the hob rotates eccentrically,so that the hob can achieve the effect of breaking rock by vibration cutting, thereby further improving the cutting-based rock breaking performance of the hob. The front DESCRIPTION end of the cutter head of the hob is equipped with several mechanical picks, and rockcan be partially broken by the picks, so that the hob can perform a cut quickly withoutbeing affected by the cutting angle of the hob. The sliding seat moves back and forth,and can not only provide huge propulsive force in the process of partially breaking therock with the picks, but also realize the breaking of rock of different depths in thecase that the tunneling machine is stationary, to avoid the crawler walking mechanismfrom moving once in every tunneling cycle, thereby improving the efficiency ofroadway tunneling; moreover, during drilling and cutting, the crawler walkingmechanism and the rack do not move, and thus do not affect the temporary supportingwork and auXiliary work, which is of great significance in realizing the efficient tunneling of hard rock roadways.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of an eccentric hob type tunneling machinecapable of breaking rock according to a predetermined path without affecting supporting work according to the present invention; FIG. 2 is a schematic structural diagram of a transmission box according to the present invention; FIG. 3 is a front view, partly in cross section, of a hob arm rotating and sliding device according to the present invention; FIG. 4 is a left view, partly in cross section, of a hob arm rotating and sliding device according to the present invention;FIG. 5 is an aXial view of a housing according to the present invention;FIG. 6 is an aXial view of a hob arm according to the present invention; FIG. 7 is a front view, partly in cross section, of an eccentric disc-shaped hob according to the present invention; FIG. 8 is an axial view of an eccentric disc-shaped hob according to the present invention; and FIG. 9 is a schematic diagram of a cutting route of an eccentric disc-shaped hob according to the present invention.
In the drawings: l-crawler walking mechanism; 2-rack; 3-hydraulic pump station; DESCRIPTION 4-power box; 5-sliding guide rail base; 6-propulsion cylinder I; 7-sliding seat;8-transmission box; 8-l-transmission box input shaft; 8-2-gear I; 8-3-gear II;8-4-transmission box output shaft; 8-5-box body; 9-hydraulic motor; l0-hob armrotating and sliding device; l0-l-housing; l0-l-l-E-shaped groove; l0-2-propulsioncylinder Il; l0-3-cylinder mounting plate; ll-hob arrn; ll-l-arm body;ll-2-rectangular guide groove; l2-low-speed high-torque motor; l3-eccentricdisc-shaped hob; l3-l-circular disc-shaped cutter head; l3-2-mechanical pick;l3-3-hole; l3-4-keyway; l3-5-alloy head; l4-control box; l5-loading device;l6-conveying device; l7-temporary supporting device; and 18-auxiliary work platform.
DETAILED DESCRIPTION OF THE INVENTION The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in FIG. l, an eccentric hob type tunneling machine capable of breakingrock according to a predeterrnined path without affecting supporting work in thepresent invention includes a crawler walking mechanism l, a rack 2, a hydraulicpump station 3, a power box 4, a sliding guide rail base 5, a propulsion cylinder I 6, asliding seat 7, a transmission box 8, a hob arm rotating and sliding device l0, a hobarm ll, a low-speed high-torque motor l2, an eccentric disc-shaped hob l3, a controlbox l4, a loading device l5, a conveying device l6, a temporary supporting device l7, and an auxiliary work platform 18.
The rack 2 is a tie of all components of a tunneling machine of the presentinvention. The crawler walking mechanism l is mounted below the rack 2 to realizethe walking of the tunneling machine. The hydraulic pump station 3, the power box 4,the sliding guide rail base 5, the temporary supporting device l7, and the auxiliarywork platform 18 are all mounted on the rack 2, wherein the hydraulic pump station 3and the power box 4 are located at the tail of the rack 2 and arranged in a bilaterallysymmetrical manner. The loading device l5 is mounted on the front end of the rack 2.The conveying device l6 is mounted at the middle of the loading device l5 and belowthe rack 2 to convey the rock fractured by cutting out of a roadway. The sliding seat 7is slidably mounted on the sliding guide rail base 5, and is connected to the sliding guide rail base 5 through two propulsion cylinders I 6. The sliding base 7 can be DESCRIPTION moved back and forth on the s1iding guide rai1 base 5 by contro11ing the stretching and retraction of piston rods of the propu1sion cy1inders I 6.
As shown in FIG. 1 and FIG. 2, the transmission box 8 is mounted on the frontend of the s1iding seat 7. The transmission box includes a box body 8-5. Twohydrau1ic motors 9 are symmetrica11y mounted on the box body 8-5 of thetransmission box. Two transmission box input shafts 8-1 and one transmission boxoutput shaft 8-4 are provided in the box body 8-5. Output shafts of the hydrau1icmotors 9 are connected to the transmission box input shafts 8-1. Two gears I 8-2mounted on the transmission box input shafts 8-1 are engaged with two gears II 8-3 mounted on the transmission box output shaft 8-4, respective1y.
As shown in FIG. 1 and FIG. 3 to FIG. 5, the hob arm rotating and s1iding device10 is mounted on the front end of the transmission box output shaft 8-4. The hob arm rotating and s1iding device 10 inc1udes a housing 10-1 in a rectangu1ar para11e1epiped structure. A cy1inder mounting p1ate 10-3 is fixed to the upper end of the housing 10-1.
An E-shaped groove 10-1-1 is provided in the housing 10-1.
As shown in FIG. 6, the hob arm 11 inc1udes an arm body 11-1 in a rectangu1arpara11e1epiped structure. The front end face of the arm body 11-1 is provided with twopara11e1 rectangu1ar guide grooves 11-2 of equal width. The width of the arm body11-1 is adapted to the width of the E-shaped groove 10-1-1. The hob arm 11 isinserted in the E-shaped groove 10-1-1 and connected to the cy1inder mounting p1ate10-3 through a propu1sion cy1inder II 10-2. The hob arm 11 can be s1id re1ative to thehob arm rotating and s1iding device 10 by contro11ing the stretching and retraction of apiston rod of the propu1sion cy1inder II 10-2, and the rotation of the hob arm rotatingand s1iding device 10 can be rea1ized by contro11ing rotation ang1es of the outputshafts of the two hydrau1ic motors 9, thereby enab1ing the hob arm 11 to produce rotationa1 motion.
As shown in FIG. 1, FIG. 7 and FIG. 8, the 1ow-speed high-torque motor 12 ismounted on one end of the hob arm 11. The eccentric disc-shaped hob 13 inc1udes acircu1ar disc-shaped cutter head 13-1. The front end of the circu1ar disc-shaped cutterhead 13-1 is in1aid with a p1ura1ity of mechanica1 picks 13-2. The materia1 of themechanica1 picks 13-2 is hard a11oy, and thus the hardness is high and the wear resistance is good. The mechanica1 picks 13-2 are arranged in an Archimedes spira1 DESCRIPTION array on the front end of the circular disc-shaped cutter head 13-1, the direction ofrotation being counterclockwise. In this embodiment, the array has 12 Archimedesspirals in total. A plurality of alloy heads 13-5 are welded on the circumference of theCircular disc-shaped cutter head 13-1. The material of the alloy heads 13-5 is hardalloy, and thus the hardness is high and the wear resistance is good. The alloy heads13-5 are equidistantly distributed on the circumference of the circular disc-shapedcutter head 13-1. The rear end of the circular disc-shaped cutter head 13-1 ismachined with a hole 13-3. The aXis of the hole 13-3 is offset from the aXis of thecircular disc-shaped cutter head 13-1 by 2-5 cm. A keyway 13-4 is machined in thehole 13-3. The eccentric disc-shaped hob 13 is eccentrically mounted on the outputshaft of the low-speed high-torque motor 12 through the hole 13-3. Due to theeccentric mounting, the eccentric disc-shaped hob 13 will produce certain vibration ina cutting process. The low-speed high-torque motor 12 drives the eccentricdisc-shaped hob 13 to drill and cut, in a vibrating manner, hard rock. The cutting routeis shown in FIG. 9. The direction of rotation of the low-speed high-torque motor 12 iscounterclockwise, and the load of the mechanical picks 13-2 during rock breaking canbe reduced according to the shape of the spirals in the array of the mechanical picks 13-2.
In a drilling and cutting process of the eccentric disc-shaped hob 13, the rack 2can be kept stationary, and motion can be realized by controlling the sliding seat 7 toslide on the sliding guide rail base 5. Therefore, the temporary supporting work andauXiliary work are not affected in the drilling and cutting process of the eccentric disc-shaped hob 13.
As shown in FIG. 1, the temporary supporting device 17 consists of fourpropulsion cylinders III and an arched supporting shed. The arched supporting shed ismounted on the upper ends of the four propulsion cylinders III. The lower ends of thefour propulsion cylinders III are fiXedly mounted on the rack. The auXiliary workplatform 18 consists of four propulsion cylinders IV and a work platform. The workplatform is mounted on the upper ends of the four propulsion cylinders IV. The lower ends of the four propulsion cylinders IV are fiXedly mounted on the rack.
The propulsion cylinders I 6, the hydraulic motors 9, the propulsion cylinder II10-2, the propulsion cylinders III, and the propulsion cylinders IV are connected to the hydraulic pump station 3 through hydraulic circuits, respectively, and the DESCRIPTION hydrau1ic pump station 3 provides high pressure oil therefor.
The control box 14 is mounted on the upper end of the power box 4, and cancontro1 the motion of each part of the tunne1ing machine according to a presetprogram. The power box 4 is e1ectrica11y connected to the 1ow-speed high-torquemotor 12 and the control box 14 respective1y, and the power box 4 provides e1ectric energy therefor.
The working princip1e is as fo11ows: when using the eccentric hob type tunne1ingmachine capab1e of breaking rock according to a predetermined path without affectingsupporting work of the present invention to perform roadway tunne1ing, a workingface power system supp1ies power to the hydrau1ic pump station 3, and the hydrau1icpump station 3 forms high pressure oi1 after being energized: the high pressure oi1 issupp1ied to the propu1sion cy1inders I 6, so that the propu1sion cy1inders I 6 can outputpropu1sive force to rea1ize back-and-forth movement of the eccentric disc-shaped hob13 through the s1iding seat 7, the transmission box 8, the hob arm rotating and s1idingdevice 10, and the hob arm 11; the high pressure oi1 is supp1ied to the hydrau1icmotors 9, so that the hydrau1ic motor 9 outputs power to rea1ize circumferentia1movement of the eccentric disc-shaped hob 13 on a cutting work face through thetransmission box input shafts 8-1, the gears I 8-2, the gears II 8-3, the transmissionbox output shaft 8-4, the hob arm rotating and s1iding device 10, and the hob arm 11;the high pressure oi1 is supp1ied to the propu1sion cy1inder II 10-2, so that thepropu1sion cy1inder II 10-2 can output propu1sive force and transfer same to theeccentric disc-shaped hob 13 through the hob arm 11, to enab1e the eccentricdisc-shaped hob 13 to move in the norrna1 direction on the cutting work face; the highpressure oi1 is supp1ied to the temporary supporting device 17, so that the temporarysupporting device 17 comp1etes the supporting of the roadway; and the high pressureoi1 is supp1ied to the auxi1iary work p1atform 18, so that the auxi1iary work p1atform18 is adjusted to an appropriate height to comp1ete auxi1iary work (such as anchoringand protection). The power box 4 provides power for the contro1 box 14 and the1ow-speed high-torque motor 12. First1y, a cutting route of the eccentric disc-shapedhob 13 is designed according to the sectiona1 area of the excavated roadway, and isinput to the contro1 box 14. Then, the contro1 box 14 contro1s the piston rods of thepropu1sion cy1inders I 6 to retract to the shortest so that the eccentric disc-shaped hob 13 moves to the rearrnost end of the propu1sion stroke, contro1s the piston rod of the DESCRIPTION propulsion cylinder ll 10-2 to retract to the shortest so that the disc-shaped hob 13 ismoved to the starting point of the cutting route, and controls the motion of the craWlertraveling mechanism 1 so that the tunneling machine is moved as a Whole to anappropriate position. The temporary supporting device 17 is controlled to rise tocomplete the temporary supporting of the roadWay. The loW-speed high-torque motor12 is started to rotate the eccentric disc-shaped hob 13, and meanWhile, the pistonrods of the propulsion cylinders I 6 are controlled to stretch, so that the eccentricdisc-shaped hob 13 drills a hole that is 5-10 cm deep in the rock to lock the propulsioncylinders I 6. Finally, the hydraulic motors 9 and the propulsion cylinder ll 10-2 aresimultaneously controlled to make the eccentric disc-shaped hob 13 rotate accordingto a preset route to break hard rock by cutting, and at the same time When theeccentric disc-shaped hob 13 breaks the hard rock by cutting, the height of theauXiliary Work platform can be adjusted, so as to complete some auXiliary Work (suchas anchoring and protection). After the tunneling of one section is completed, thepropulsion cylinders I 6, the hydraulic motors 9, and the propulsion cylinder ll 10-2are readjusted in the same Way to proceed to the tunneling of the next section, and theabove-mentioned process is repeated continuously. When stretched to the longestpositions, the piston rods of the propulsion cylinders I 6 exit the temporary supportingdevice 17, and the piston rods of the propulsion cylinders I 6 are retracted to shortest.By controlling the craWler Walking mechanism 1, the tunneling machine is movedforward to an appropriate position to continue the tunneling Work. This process isrepeated over and over until the tunneling is completed. In the above-mentionedroadWay tunneling process, the fractured and broken stones are conveyed out of the roadWay through the loading device 15 and the conveying device 16.
Claims (10)
1. An eccentric hob type tunneling machine capable of breaking rock according to apredeterrnined path without affecting supporting work, comprising a crawler walkingmechanism (1), a rack (2), a hydraulic pump station (3), a power box (4), a slidingguide rail base (5), a propulsion cylinder I (6), a sliding seat (7), a transmission box(8), a hob arm rotating and sliding device (10), a hob arm (11), a low-speedhigh-torque motor (12), an eccentric disc-shaped hob (13), a control box (14), aloading device (15), a conveying device (16), a temporary supporting device (17), and an auxiliary work platform (l8); the rack (2) being mounted on the crawler Walking mechanism (1); the hydraulicpump station (3), the power box (4), the sliding guide rail base (5), the temporarysupporting device (17), and the auxiliary work platform (18) being all mounted on therack (2), wherein the hydraulic pump station (3) and the power box (4) are located atthe tail of the rack (2) and arranged in a bilaterally symmetrical manner; the slidingguide rail base (5) is located on the front ends of the hydraulic pump station (3) andthe power box (4); the loading device (15) is mounted on the front end of the rack (2);the conveying device (16) is mounted at the middle of the loading device (15) andbelow the rack (2); the sliding seat (7) is slidably mounted on the sliding guide railbase (5), and is connected to the sliding guide rail base (5) through two propulsioncylinders I (6); the transmission box (8) is mounted on the front end of the sliding seat(7); two hydraulic motors (9) are symmetrically mounted on a box body of thetransmission box (8); output shafts of the hydraulic motors (9) are connected totransmission box input shafts (8-1); gears I (8-2) mounted on the transmission boxinput shafts (8-1) are engaged with gears II (8-3) mounted on a transmission boxoutput shaft (8-4); the hob arm rotating and sliding device (10) is mounted on thefront end of the transmission box output shaft (8-4); the hob arm rotating and slidingdevice (10) comprises a housing (10-1) in a rectangular parallelepiped structure; acylinder mounting plate (10-3) is fixed to the upper end of the housing (10-1); an E-shaped groove (10-1-1) is provided in the housing (10-1); the hob arm (11) is CLAIMS inserted in the E-shaped groove (10-1-1) and connected to the cy1inder mounting plate(10-3) through a propu1sion cy1inder II (10-2); the 1oW-speed high-torque motor (12)is mounted on the front end of the hob arm (11); and the eccentric disc-shaped hob(13) is eccentrica11y mounted on the output shaft of the 1oW-speed high-torque motor (12); the propu1sion cy1inders I (6), the hydrau1ic motors (9), the propu1sion cy1inder II(10-2), the temporary supporting device (17), and the auxi1iary Work p1atform (18) areconnected to the hydrau1ic pump station (3) through hydrau1ic circuits, respective1y;the contro1 box (14) is mounted on the upper end of the power box (4); and the1oW-speed high-torque motor (12) and the contro1 box (14) are e1ectrica11y connected to the power box (4), respective1y.
2. The eccentric hob type tunne1ing machine capab1e of breaking rock according to apredeterrnined path Without affecting supporting Work according to c1aim 1, Whereinthe eccentric disc-shaped hob (13) comprises a circu1ar disc-shaped cutter head (13-1);the front end of the circu1ar disc-shaped cutter head (13-1) is in1aid With a p1ura1ity ofmechanica1 picks (13-2); a p1ura1ity of a11oy heads (13-5) are We1ded on thecircumference of the circu1ar disc-shaped cutter head (13-1); the rear end of thecircu1ar disc-shaped cutter head (13-1) is machined With a ho1e (13-3) for mountingthe output shaft of the 1oW-speed high-torque motor (12); and a keyway (13-4) ismachined in the ho1e (13-3).
3. The eccentric hob type tunne1ing machine capab1e of breaking rock according to apredeterrnined path Without affecting supporting Work according to c1aim 2, Whereinthe axis of the ho1e (13-3) is offset from the axis of the circu1ar disc-shaped cutter head (13-1) by 2-5 cm.
4. The eccentric hob type tunne1ing machine capab1e of breaking rock according to apredeterrnined path Without affecting supporting Work according to c1aim 2, Whereinthe material of the mechanica1 picks (13-2) is hard a11oy, and the mechanica1 picks(13-2) are arranged in an Archimedes spira1 array on the front end of the circu1ar disc-shaped cutter head (13-1), the direction of rotation being counterc1ockWise. CLAIMS
5. The eccentric hob type tunneling machine capable of breaking rock according to apredeterrnined path without affecting supporting work according to claim 4, wherein the array has 12 Archimedes spirals in total.
6. The eccentric hob type tunneling machine capable of breaking rock according to apredeterrnined path without affecting supporting work according to claim 2, whereinthe material of the alloy heads (13-5) is hard alloy, and the alloy heads (13-5) areequidistantly distributed on the circumference of the circular disc-shaped cutter head (13-1).
7. The eccentric hob type tunneling machine capable of breaking rock according to apredeterrnined path without affecting supporting work according to claim 1, wherein the direction of rotation of the low-speed high-torque motor (12) is counterclockwise.
8. The eccentric hob type tunneling machine capable of breaking rock according to apredeterrnined path without affecting supporting work according to claim 1, whereinthe hob arm (11) comprises an arm body (11-1) in a rectangular parallelepipedstructure; the front end face of the arm body (11-1) is provided with two parallelrectangular guide grooves (11-2) of equal width; and the hob arm (11) is positioned inthe hob arm rotating and sliding device (10) through the two rectangular guide grooves (11-2).
9. The eccentric hob type tunneling machine capable of breaking rock according to apredeterrnined path without affecting supporting work according to claim 1, whereinthe temporary supporting device (17) consists of four propulsion cylinders III and anarched supporting shed; the arched supporting shed is mounted on the upper ends ofthe four propulsion cylinders III; the lower ends of the four propulsion cylinders IIIare fiXedly mounted on the rack; and the four propulsion cylinders III are connected to the hydraulic pump station (3) through hydraulic circuits, respectively.
10. The eccentric hob type tunneling machine capable of breaking rock according to apredeterrnined path without affecting supporting work according to claim 1, wherein the auXiliary work platform (18) consists of four propulsion cylinders IV and a work CLAIMS platform; the Work platform is mounted on the upper ends of the four propulsíoncylinders IV; the lower ends of the four propulsíon cylinders IV are fixedly mountedon the rack; and the four propulsíon cylinders IV are connected to the hydraulíc pump station (3) through hydraulic círcuits, respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071177.XA CN110735647B (en) | 2019-11-05 | 2019-11-05 | Eccentric hob type heading machine capable of breaking rock according to predetermined path without influencing supporting operation |
| PCT/CN2020/084608 WO2021088316A1 (en) | 2019-11-05 | 2020-04-14 | Eccentric hob type heading machine capable of breaking rock according to predetermined path without affecting supporting work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE2130147A1 true SE2130147A1 (en) | 2021-06-01 |
| SE545716C2 SE545716C2 (en) | 2023-12-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE2130147A SE545716C2 (en) | 2019-11-05 | 2020-04-14 | Eccentric hob type tunneling machine capable of breaking rock according to predetermined path without affecting supporting work |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP7094584B2 (en) |
| CN (1) | CN110735647B (en) |
| AU (1) | AU2020277229B2 (en) |
| CA (1) | CA3101300C (en) |
| SE (1) | SE545716C2 (en) |
| WO (1) | WO2021088316A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735647B (en) * | 2019-11-05 | 2020-09-01 | 中国矿业大学 | Eccentric hob type heading machine capable of breaking rock according to predetermined path without influencing supporting operation |
| CN114136826B (en) * | 2021-11-26 | 2024-03-29 | 中南大学 | Shaft conical surface broken rock test device |
| CN114412462B (en) * | 2022-01-19 | 2023-06-30 | 长沙矿山研究院有限责任公司 | Cutter head suitable for hard rock mining and hard rock mining method |
| CN114876486B (en) * | 2022-05-20 | 2023-03-10 | 中国矿业大学 | Roadway tunneling robot and automatic cutting control method |
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-
2019
- 2019-11-05 CN CN201911071177.XA patent/CN110735647B/en active Active
-
2020
- 2020-04-14 SE SE2130147A patent/SE545716C2/en unknown
- 2020-04-14 CA CA3101300A patent/CA3101300C/en active Active
- 2020-04-14 WO PCT/CN2020/084608 patent/WO2021088316A1/en active Application Filing
- 2020-04-14 JP JP2020568308A patent/JP7094584B2/en active Active
- 2020-04-14 AU AU2020277229A patent/AU2020277229B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA3101300A1 (en) | 2021-02-12 |
| WO2021088316A1 (en) | 2021-05-14 |
| CA3101300C (en) | 2022-01-04 |
| AU2020277229A1 (en) | 2021-05-20 |
| CN110735647B (en) | 2020-09-01 |
| JP2022500574A (en) | 2022-01-04 |
| JP7094584B2 (en) | 2022-07-04 |
| CN110735647A (en) | 2020-01-31 |
| SE545716C2 (en) | 2023-12-19 |
| AU2020277229B2 (en) | 2022-02-17 |
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