CA3101300A1 - 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
- CA3101300A1 CA3101300A1 CA3101300A CA3101300A CA3101300A1 CA 3101300 A1 CA3101300 A1 CA 3101300A1 CA 3101300 A CA3101300 A CA 3101300A CA 3101300 A CA3101300 A CA 3101300A CA 3101300 A1 CA3101300 A1 CA 3101300A1
- Authority
- CA
- Canada
- Prior art keywords
- hob
- eccentric
- machine capable
- predetermined path
- tunneling machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011435 rock Substances 0.000 title claims abstract description 52
- 230000005641 tunneling Effects 0.000 title claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 239000000956 alloy Substances 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 6
- 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
- 230000033001 locomotion Effects 0.000 description 6
- 238000005553 drilling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000001141 propulsive effect Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 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
- 238000012552 review Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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 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 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 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
Disclosed 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
ECCENTRIC HOB TYPE TUNNELING MACHINE CAPABLE OF
BREAKING ROCK ACCORDING TO PREDETERMINED PATH
WITHOUT AFFECTING SUPPORTING WORK
BACKGROUND OF THE INVENTION
Field of the Invention The present invention belongs to the technical field of coal mining, and relates to tunneling machinery equipment, and in particular, to an eccentric hob type tunneling machine 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 still the world's largest energy consumer, accounting for 23.2% of global consumption and 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 main energy in China for a long period of time in the future. With the increasing demand for coal energy in China, the imbalance of mining proportion due to the difficulty in rock roadway tunneling has become the main reason of restricting coal mining in China.
Moreover, nowadays, with the mature application of mechanized coal mining, the mining efficiency has been greatly improved, the imbalance of mining proportion has become more severe, and hard rock tunneling machinery equipment has become the "bottleneck" restricting the coordinated progress of coal mining and roadway tunneling in mines. Especially for hard rock with Plans hardness coefficient f? 10, the impact and wear on a tunneling work mechanism and mounted tools thereof are increased during construction, and due to the space limitation, the working environment 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 rock breaking 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 causes large dust and poisonous gas emissions and is prone to major accidents such as gas explosion, and therefore is not conducive to safe, efficient and green mining of ore body resources. Moreover, breaking hard rock with mechanical picks is of great Date Recue/Date Received 2020-12-01 difficulty and a heavy load, the picks are easy to be damaged and need to be replaced frequently, and thus the rock roadway tunneling efficiency is low and the costs are high.
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 tunneling machine capable of breaking rock according to a predetermined path without affecting supporting 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, thereby realizing 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 the following technical solutions: an eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work, including 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, 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 pump station, 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 hydraulic pump station and the power box are located at the tail of the rack and arranged in a bilaterally symmetrical manner; the sliding guide rail base is located on the front ends of 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 device and below the rack; the sliding seat is slidably mounted on the sliding guide rail base, and is connected to the sliding guide rail base through two propulsion cylinders I; the transmission box is mounted on the front end of the sliding seat; two hydraulic motors
BREAKING ROCK ACCORDING TO PREDETERMINED PATH
WITHOUT AFFECTING SUPPORTING WORK
BACKGROUND OF THE INVENTION
Field of the Invention The present invention belongs to the technical field of coal mining, and relates to tunneling machinery equipment, and in particular, to an eccentric hob type tunneling machine 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 still the world's largest energy consumer, accounting for 23.2% of global consumption and 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 main energy in China for a long period of time in the future. With the increasing demand for coal energy in China, the imbalance of mining proportion due to the difficulty in rock roadway tunneling has become the main reason of restricting coal mining in China.
Moreover, nowadays, with the mature application of mechanized coal mining, the mining efficiency has been greatly improved, the imbalance of mining proportion has become more severe, and hard rock tunneling machinery equipment has become the "bottleneck" restricting the coordinated progress of coal mining and roadway tunneling in mines. Especially for hard rock with Plans hardness coefficient f? 10, the impact and wear on a tunneling work mechanism and mounted tools thereof are increased during construction, and due to the space limitation, the working environment 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 rock breaking 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 causes large dust and poisonous gas emissions and is prone to major accidents such as gas explosion, and therefore is not conducive to safe, efficient and green mining of ore body resources. Moreover, breaking hard rock with mechanical picks is of great Date Recue/Date Received 2020-12-01 difficulty and a heavy load, the picks are easy to be damaged and need to be replaced frequently, and thus the rock roadway tunneling efficiency is low and the costs are high.
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 tunneling machine capable of breaking rock according to a predetermined path without affecting supporting 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, thereby realizing 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 the following technical solutions: an eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work, including 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, 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 pump station, 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 hydraulic pump station and the power box are located at the tail of the rack and arranged in a bilaterally symmetrical manner; the sliding guide rail base is located on the front ends of 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 device and below the rack; the sliding seat is slidably mounted on the sliding guide rail base, and is connected to the sliding guide rail base through two propulsion cylinders I; the transmission box is mounted on the front end of the sliding seat; two hydraulic motors
2 Date Recue/Date Received 2020-12-01 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 II mounted on a transmission box output shaft; the hob arm rotating and sliding device is mounted on the front end of the transmission box output shaft; the hob arm rotating and sliding device includes a housing in a rectangular parallelepiped structure; a cylinder mounting plate is fixed to the upper end of the housing; an E-shaped groove is provided in the housing;
the hob arm is inserted in the E-shaped groove and connected to the cylinder mounting plate through a propulsion cylinder II; the low-speed high-torque motor is mounted on the front end of the hob arm; and the eccentric 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, the temporary supporting device, and the auxiliary work platform are connected to the hydraulic pump station through hydraulic circuits, respectively; the control box is mounted 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 of mechanical picks; a plurality of alloy heads are welded on the circumference of the circular disc-shaped cutter head; the rear end of the circular disc-shaped cutter head is machined 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-shaped cutter 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 mechanical picks are arranged in an Archimedes spiral array on the front end of the circular disc-shaped cutter head, the direction of rotation being counterclockwise.
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 is
mounted on the transmission box input shafts are engaged with gears II mounted on a transmission box output shaft; the hob arm rotating and sliding device is mounted on the front end of the transmission box output shaft; the hob arm rotating and sliding device includes a housing in a rectangular parallelepiped structure; a cylinder mounting plate is fixed to the upper end of the housing; an E-shaped groove is provided in the housing;
the hob arm is inserted in the E-shaped groove and connected to the cylinder mounting plate through a propulsion cylinder II; the low-speed high-torque motor is mounted on the front end of the hob arm; and the eccentric 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, the temporary supporting device, and the auxiliary work platform are connected to the hydraulic pump station through hydraulic circuits, respectively; the control box is mounted 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 of mechanical picks; a plurality of alloy heads are welded on the circumference of the circular disc-shaped cutter head; the rear end of the circular disc-shaped cutter head is machined 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-shaped cutter 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 mechanical picks are arranged in an Archimedes spiral array on the front end of the circular disc-shaped cutter head, the direction of rotation being counterclockwise.
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 is
3 Date Recue/Date Received 2020-12-01 counterclockwise, 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 arm includes an arm body in a rectangular parallelepiped structure;
the front end face of the arm body is provided with two parallel rectangular guide grooves of equal width; and the hob arm is positioned in the hob arm rotating and sliding device through the two rectangular guide grooves.
Further, the temporary supporting device consists of four propulsion cylinders III
and an arched supporting shed; the arched supporting shed is mounted on the upper ends of the four propulsion cylinders III; the lower ends of the four propulsion cylinders 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
and a work platform; the work platform 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; 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 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. The front end of the cutter head of the hob is equipped with several mechanical picks, and rock can be partially broken by the picks, so that the hob can perform a cut quickly without being 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 the rock with the picks, but also realize the breaking of rock of different depths in the case
Further, the hob arm includes an arm body in a rectangular parallelepiped structure;
the front end face of the arm body is provided with two parallel rectangular guide grooves of equal width; and the hob arm is positioned in the hob arm rotating and sliding device through the two rectangular guide grooves.
Further, the temporary supporting device consists of four propulsion cylinders III
and an arched supporting shed; the arched supporting shed is mounted on the upper ends of the four propulsion cylinders III; the lower ends of the four propulsion cylinders 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
and a work platform; the work platform 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; 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 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. The front end of the cutter head of the hob is equipped with several mechanical picks, and rock can be partially broken by the picks, so that the hob can perform a cut quickly without being 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 the rock with the picks, but also realize the breaking of rock of different depths in the case
4 Date Recue/Date Received 2020-12-01 that the tunneling machine is stationary, to avoid the crawler walking mechanism from moving once in every tunneling cycle, thereby improving the efficiency of roadway tunneling; moreover, during drilling and cutting, the crawler walking mechanism and the rack do not move, and thus do not affect the temporary supporting work 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 machine capable 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: 1-crawler walking mechanism; 2-rack; 3-hydraulic pump station;
4-power box; 5-sliding guide rail base; 6-propulsion cylinder I; 7-sliding seat; 8-transmission box; 8-1-transmission box input shaft; 8-2-gear I; 8-3-gear II; 8-transmission box output shaft; 8-5-box body; 9-hydraulic motor; 10-hob arm rotating and sliding device; 10-1-housing; 10-1-1-E-shaped groove; 10-2-propulsion cylinder II;
10-3-cylinder mounting plate; 11-hob arm; 11-1-arm body; 11-2-rectangular guide Date Recue/Date Received 2020-12-01 groove; 12-low-speed high-torque motor; 13-eccentric disc-shaped hob; 13-1-circular disc-shaped cutter head; 13-2-mechanical pick; 13-3-hole; 13-4-keyway; 13-5-alloy head; 14-control box; 15-loading device; 16-conveying device; 17-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. 1, an eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work in the present invention includes a crawler walking mechanism 1, a rack 2, a hydraulic pump station 3, a power box 4, a sliding guide 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-speed high-torque motor 12, an eccentric disc-shaped hob 13, a control box 14, a loading device 15, a conveying device 16, a temporary supporting device 17, and an auxiliary work platform 18.
The rack 2 is a tie of all components of a tunneling machine of the present invention.
The crawler walking mechanism 1 is mounted below the rack 2 to realize the walking of the tunneling machine. The hydraulic pump station 3, the power box 4, the sliding guide rail base 5, the temporary supporting device 17, and the auxiliary work platform 18 are all mounted on the rack 2, wherein the hydraulic pump station 3 and the power box 4 are located at the tail of the rack 2 and arranged in a bilaterally symmetrical manner. 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 and below the rack 2 to convey the rock fractured by cutting out of a roadway. The sliding seat 7 is slidably mounted on the sliding guide rail base 5, and is connected to the sliding guide rail base through two propulsion cylinders I 6. The sliding base 7 can be moved back and forth on the sliding guide rail base 5 by controlling the stretching and retraction of piston rods of the propulsion cylinders I 6.
As shown in FIG. 1 and FIG. 2, the transmission box 8 is mounted on the front end of the sliding seat 7. The transmission box includes a box body 8-5. Two hydraulic motors 9 are symmetrically mounted on the box body 8-5 of the transmission box. Two transmission box input shafts 8-1 and one transmission box output shaft 8-4 are Date Recue/Date Received 2020-12-01 provided in the box body 8-5. Output shafts of the hydraulic motors 9 are connected to the transmission box input shafts 8-1. Two gears I 8-2 mounted 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, respectively.
As shown in FIG. 1 and FIG. 3 to FIG. 5, the hob arm rotating and sliding device is mounted on the front end of the transmission box output shaft 8-4. The hob arm rotating and sliding device 10 includes a housing 10-1 in a rectangular parallelepiped structure. A cylinder 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.
As shown in FIG. 6, the hob arm 11 includes an arm body 11-1 in a rectangular parallelepiped structure. The front end face of the arm body 11-1 is provided with two parallel rectangular guide grooves 11-2 of equal width. The width of the arm body II-I is adapted to the width of the E-shaped groove 10-1-1. The hob arm 11 is inserted in the E-shaped groove 10-1-1 and connected to the cylinder mounting plate 10-3 through a propulsion cylinder 11 10-2. The hob arm 11 can be slid relative to the hob arm rotating and sliding device 10 by controlling the stretching and retraction of a piston rod of the propulsion cylinder 11 10-2, and the rotation of the hob arm rotating and sliding device 10 can be realized by controlling rotation angles of the output shafts of the two hydraulic motors 9, thereby enabling the hob arm 11 to produce rotational motion.
As shown in FIG. 1, FIG. 7 and FIG. 8, the low-speed high-torque motor 12 is mounted on one end of the hob arm 11. The eccentric disc-shaped hob 13 includes a circular disc-shaped cutter head 13-1. The front end of the circular disc-shaped cutter head 13-1 is inlaid with a plurality of mechanical picks 13-2. The material of the mechanical picks 13-2 is hard alloy, and thus the hardness is high and the wear resistance is good. The mechanical picks 13-2 are arranged in an Archimedes spiral array on the front end of the circular disc-shaped cutter head 13-1, the direction of rotation being counterclockwise. In this embodiment, the array has 12 Archimedes spirals in total. A plurality of alloy heads 13-5 are welded on the circumference of the circular disc-shaped cutter head 13-1. The material of the alloy heads 13-5 is hard alloy, and thus the hardness is high and the wear resistance is good. The alloy heads 13-5 are equidistantly distributed on the circumference of the circular disc-shaped cutter head 13-1. The rear end of the circular disc-shaped cutter head 13-1 is machined with a hole 13-3. The axis of the hole 13-3 is offset from the axis of the circular disc-shaped cutter Date Recue/Date Received 2020-12-01 head 13-1 by 2-5 cm. A keyway 13-4 is machined in the hole 13-3. The eccentric disc-shaped hob 13 is eccentrically mounted on the output shaft of the low-speed high-torque motor 12 through the hole 13-3. Due to the eccentric mounting, the eccentric disc-shaped hob 13 will produce certain vibration in a cutting process. The low-speed high-torque motor 12 drives the eccentric disc-shaped hob 13 to drill and cut, in a vibrating manner, hard rock. The cutting route is shown in FIG. 9. The direction of rotation of the low-speed high-torque motor 12 is counterclockwise, and the load of the mechanical picks 13-2 during rock breaking can be 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 2 can be kept stationary, and motion can be realized by controlling the sliding seat 7 to slide on the sliding guide rail base 5. Therefore, the temporary supporting work and auxiliary 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 four propulsion cylinders III and an arched supporting shed. The arched supporting shed is mounted on the upper ends of the four propulsion cylinders III. The lower ends of the four propulsion cylinders III are fixedly mounted on the rack. The auxiliary work platform 18 consists of four propulsion cylinders IV and a work platform. The work platform 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 2, the propulsion cylinders III, and the propulsion cylinders IV are connected to the hydraulic pump station 3 through hydraulic circuits, respectively, and the hydraulic pump station 3 provides high pressure oil therefor.
The control box 14 is mounted on the upper end of the power box 4, and can control the motion of each part of the tunneling machine according to a preset program. The power box 4 is electrically connected to the low-speed high-torque motor 12 and the control box 14 respectively, and the power box 4 provides electric energy therefor.
The working principle is as follows: when using the eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work of the present invention to perform roadway tunneling, a working face Date Recue/Date Received 2020-12-01 power system supplies power to the hydraulic pump station 3, and the hydraulic pump station 3 forms high pressure oil after being energized: the high pressure oil is supplied to the propulsion cylinders I 6, so that the propulsion cylinders I 6 can output propulsive force to realize back-and-forth movement of the eccentric disc-shaped hob 13 through the sliding seat 7, the transmission box 8, the hob arm rotating and sliding device 10, and the hob arm 11; the high pressure oil is supplied to the hydraulic motors 9, so that the hydraulic motor 9 outputs power to realize circumferential movement of the eccentric disc-shaped hob 13 on a cutting work face through the transmission box input shafts 8-1, the gears I 8-2, the gears II 8-3, the transmission box output shaft 8-4, the hob arm rotating and sliding device 10, and the hob arm 11; the high pressure oil is supplied to the propulsion cylinder 11 10-2, so that the propulsion cylinder 11 10-2 can output propulsive force and transfer same to the eccentric disc-shaped hob 13 through the hob arm 11, to enable the eccentric disc-shaped hob 13 to move in the normal direction on the cutting work face; the high pressure oil is supplied to the temporary supporting device 17, so that the temporary supporting device 17 completes the supporting of the roadway; and the high pressure oil is supplied to the auxiliary work platform 18, so that the auxiliary work platform 18 is adjusted to an appropriate height to complete auxiliary work (such as anchoring and protection). The power box 4 provides power for the control box 14 and the low-speed high-torque motor 12.
Firstly, a cutting route of the eccentric disc-shaped hob 13 is designed according to the sectional area of the excavated roadway, and is input to the control box 14. Then, the control box 14 controls the piston rods of the propulsion cylinders I 6 to retract to the shortest so that the eccentric disc-shaped hob 13 moves to the rearmost end of the propulsion stroke, controls the piston rod of the propulsion cylinder 11 10-2 to retract to the shortest so that the disc-shaped hob 13 is moved to the starting point of the cutting route, and controls the motion of the crawler traveling mechanism 1 so that the tunneling machine is moved as a whole to an appropriate position. The temporary supporting device 17 is controlled to rise to complete the temporary supporting of the roadway. The low-speed high-torque motor 12 is started to rotate the eccentric disc-shaped hob 13, and meanwhile, the piston rods of the propulsion cylinders I 6 are controlled to stretch, so that the eccentric disc-shaped hob 13 drills a hole that is 5-10 cm deep in the rock to lock the propulsion cylinders I 6. Finally, the hydraulic motors 9 and the propulsion cylinder 11 10-2 are simultaneously controlled to make the eccentric disc-shaped hob 13 rotate according to a preset route to break hard rock by cutting, and at the same time when the eccentric Date Recue/Date Received 2020-12-01 disc-shaped hob 13 breaks the hard rock by cutting, the height of the auxiliary work platform can be adjusted, so as to complete some auxiliary work (such as anchoring and protection). After the tunneling of one section is completed, the propulsion cylinders I
6, the hydraulic motors 9, and the propulsion cylinder 11 10-2 are readjusted in the same way to proceed to the tunneling of the next section, and the above-mentioned process is repeated continuously. When stretched to the longest positions, the piston rods of the propulsion cylinders I 6 exit the temporary supporting device 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 moved forward to an appropriate position to continue the tunneling work. This process is repeated over and over until the tunneling is completed. In the above-mentioned roadway tunneling process, the fractured and broken stones are conveyed out of the roadway through the loading device 15 and the conveying device 16.
Date Recue/Date Received 2020-12-01
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram of an eccentric hob type tunneling machine capable 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: 1-crawler walking mechanism; 2-rack; 3-hydraulic pump station;
4-power box; 5-sliding guide rail base; 6-propulsion cylinder I; 7-sliding seat; 8-transmission box; 8-1-transmission box input shaft; 8-2-gear I; 8-3-gear II; 8-transmission box output shaft; 8-5-box body; 9-hydraulic motor; 10-hob arm rotating and sliding device; 10-1-housing; 10-1-1-E-shaped groove; 10-2-propulsion cylinder II;
10-3-cylinder mounting plate; 11-hob arm; 11-1-arm body; 11-2-rectangular guide Date Recue/Date Received 2020-12-01 groove; 12-low-speed high-torque motor; 13-eccentric disc-shaped hob; 13-1-circular disc-shaped cutter head; 13-2-mechanical pick; 13-3-hole; 13-4-keyway; 13-5-alloy head; 14-control box; 15-loading device; 16-conveying device; 17-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. 1, an eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work in the present invention includes a crawler walking mechanism 1, a rack 2, a hydraulic pump station 3, a power box 4, a sliding guide 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-speed high-torque motor 12, an eccentric disc-shaped hob 13, a control box 14, a loading device 15, a conveying device 16, a temporary supporting device 17, and an auxiliary work platform 18.
The rack 2 is a tie of all components of a tunneling machine of the present invention.
The crawler walking mechanism 1 is mounted below the rack 2 to realize the walking of the tunneling machine. The hydraulic pump station 3, the power box 4, the sliding guide rail base 5, the temporary supporting device 17, and the auxiliary work platform 18 are all mounted on the rack 2, wherein the hydraulic pump station 3 and the power box 4 are located at the tail of the rack 2 and arranged in a bilaterally symmetrical manner. 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 and below the rack 2 to convey the rock fractured by cutting out of a roadway. The sliding seat 7 is slidably mounted on the sliding guide rail base 5, and is connected to the sliding guide rail base through two propulsion cylinders I 6. The sliding base 7 can be moved back and forth on the sliding guide rail base 5 by controlling the stretching and retraction of piston rods of the propulsion cylinders I 6.
As shown in FIG. 1 and FIG. 2, the transmission box 8 is mounted on the front end of the sliding seat 7. The transmission box includes a box body 8-5. Two hydraulic motors 9 are symmetrically mounted on the box body 8-5 of the transmission box. Two transmission box input shafts 8-1 and one transmission box output shaft 8-4 are Date Recue/Date Received 2020-12-01 provided in the box body 8-5. Output shafts of the hydraulic motors 9 are connected to the transmission box input shafts 8-1. Two gears I 8-2 mounted 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, respectively.
As shown in FIG. 1 and FIG. 3 to FIG. 5, the hob arm rotating and sliding device is mounted on the front end of the transmission box output shaft 8-4. The hob arm rotating and sliding device 10 includes a housing 10-1 in a rectangular parallelepiped structure. A cylinder 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.
As shown in FIG. 6, the hob arm 11 includes an arm body 11-1 in a rectangular parallelepiped structure. The front end face of the arm body 11-1 is provided with two parallel rectangular guide grooves 11-2 of equal width. The width of the arm body II-I is adapted to the width of the E-shaped groove 10-1-1. The hob arm 11 is inserted in the E-shaped groove 10-1-1 and connected to the cylinder mounting plate 10-3 through a propulsion cylinder 11 10-2. The hob arm 11 can be slid relative to the hob arm rotating and sliding device 10 by controlling the stretching and retraction of a piston rod of the propulsion cylinder 11 10-2, and the rotation of the hob arm rotating and sliding device 10 can be realized by controlling rotation angles of the output shafts of the two hydraulic motors 9, thereby enabling the hob arm 11 to produce rotational motion.
As shown in FIG. 1, FIG. 7 and FIG. 8, the low-speed high-torque motor 12 is mounted on one end of the hob arm 11. The eccentric disc-shaped hob 13 includes a circular disc-shaped cutter head 13-1. The front end of the circular disc-shaped cutter head 13-1 is inlaid with a plurality of mechanical picks 13-2. The material of the mechanical picks 13-2 is hard alloy, and thus the hardness is high and the wear resistance is good. The mechanical picks 13-2 are arranged in an Archimedes spiral array on the front end of the circular disc-shaped cutter head 13-1, the direction of rotation being counterclockwise. In this embodiment, the array has 12 Archimedes spirals in total. A plurality of alloy heads 13-5 are welded on the circumference of the circular disc-shaped cutter head 13-1. The material of the alloy heads 13-5 is hard alloy, and thus the hardness is high and the wear resistance is good. The alloy heads 13-5 are equidistantly distributed on the circumference of the circular disc-shaped cutter head 13-1. The rear end of the circular disc-shaped cutter head 13-1 is machined with a hole 13-3. The axis of the hole 13-3 is offset from the axis of the circular disc-shaped cutter Date Recue/Date Received 2020-12-01 head 13-1 by 2-5 cm. A keyway 13-4 is machined in the hole 13-3. The eccentric disc-shaped hob 13 is eccentrically mounted on the output shaft of the low-speed high-torque motor 12 through the hole 13-3. Due to the eccentric mounting, the eccentric disc-shaped hob 13 will produce certain vibration in a cutting process. The low-speed high-torque motor 12 drives the eccentric disc-shaped hob 13 to drill and cut, in a vibrating manner, hard rock. The cutting route is shown in FIG. 9. The direction of rotation of the low-speed high-torque motor 12 is counterclockwise, and the load of the mechanical picks 13-2 during rock breaking can be 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 2 can be kept stationary, and motion can be realized by controlling the sliding seat 7 to slide on the sliding guide rail base 5. Therefore, the temporary supporting work and auxiliary 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 four propulsion cylinders III and an arched supporting shed. The arched supporting shed is mounted on the upper ends of the four propulsion cylinders III. The lower ends of the four propulsion cylinders III are fixedly mounted on the rack. The auxiliary work platform 18 consists of four propulsion cylinders IV and a work platform. The work platform 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 2, the propulsion cylinders III, and the propulsion cylinders IV are connected to the hydraulic pump station 3 through hydraulic circuits, respectively, and the hydraulic pump station 3 provides high pressure oil therefor.
The control box 14 is mounted on the upper end of the power box 4, and can control the motion of each part of the tunneling machine according to a preset program. The power box 4 is electrically connected to the low-speed high-torque motor 12 and the control box 14 respectively, and the power box 4 provides electric energy therefor.
The working principle is as follows: when using the eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work of the present invention to perform roadway tunneling, a working face Date Recue/Date Received 2020-12-01 power system supplies power to the hydraulic pump station 3, and the hydraulic pump station 3 forms high pressure oil after being energized: the high pressure oil is supplied to the propulsion cylinders I 6, so that the propulsion cylinders I 6 can output propulsive force to realize back-and-forth movement of the eccentric disc-shaped hob 13 through the sliding seat 7, the transmission box 8, the hob arm rotating and sliding device 10, and the hob arm 11; the high pressure oil is supplied to the hydraulic motors 9, so that the hydraulic motor 9 outputs power to realize circumferential movement of the eccentric disc-shaped hob 13 on a cutting work face through the transmission box input shafts 8-1, the gears I 8-2, the gears II 8-3, the transmission box output shaft 8-4, the hob arm rotating and sliding device 10, and the hob arm 11; the high pressure oil is supplied to the propulsion cylinder 11 10-2, so that the propulsion cylinder 11 10-2 can output propulsive force and transfer same to the eccentric disc-shaped hob 13 through the hob arm 11, to enable the eccentric disc-shaped hob 13 to move in the normal direction on the cutting work face; the high pressure oil is supplied to the temporary supporting device 17, so that the temporary supporting device 17 completes the supporting of the roadway; and the high pressure oil is supplied to the auxiliary work platform 18, so that the auxiliary work platform 18 is adjusted to an appropriate height to complete auxiliary work (such as anchoring and protection). The power box 4 provides power for the control box 14 and the low-speed high-torque motor 12.
Firstly, a cutting route of the eccentric disc-shaped hob 13 is designed according to the sectional area of the excavated roadway, and is input to the control box 14. Then, the control box 14 controls the piston rods of the propulsion cylinders I 6 to retract to the shortest so that the eccentric disc-shaped hob 13 moves to the rearmost end of the propulsion stroke, controls the piston rod of the propulsion cylinder 11 10-2 to retract to the shortest so that the disc-shaped hob 13 is moved to the starting point of the cutting route, and controls the motion of the crawler traveling mechanism 1 so that the tunneling machine is moved as a whole to an appropriate position. The temporary supporting device 17 is controlled to rise to complete the temporary supporting of the roadway. The low-speed high-torque motor 12 is started to rotate the eccentric disc-shaped hob 13, and meanwhile, the piston rods of the propulsion cylinders I 6 are controlled to stretch, so that the eccentric disc-shaped hob 13 drills a hole that is 5-10 cm deep in the rock to lock the propulsion cylinders I 6. Finally, the hydraulic motors 9 and the propulsion cylinder 11 10-2 are simultaneously controlled to make the eccentric disc-shaped hob 13 rotate according to a preset route to break hard rock by cutting, and at the same time when the eccentric Date Recue/Date Received 2020-12-01 disc-shaped hob 13 breaks the hard rock by cutting, the height of the auxiliary work platform can be adjusted, so as to complete some auxiliary work (such as anchoring and protection). After the tunneling of one section is completed, the propulsion cylinders I
6, the hydraulic motors 9, and the propulsion cylinder 11 10-2 are readjusted in the same way to proceed to the tunneling of the next section, and the above-mentioned process is repeated continuously. When stretched to the longest positions, the piston rods of the propulsion cylinders I 6 exit the temporary supporting device 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 moved forward to an appropriate position to continue the tunneling work. This process is repeated over and over until the tunneling is completed. In the above-mentioned roadway tunneling process, the fractured and broken stones are conveyed out of the roadway through the loading device 15 and the conveying device 16.
Date Recue/Date Received 2020-12-01
Claims (10)
1. An eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work, comprising a crawler walking mechanism (1), a rack (2), a hydraulic pump station (3), a power box (4), a sliding guide 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-speed high-torque motor (12), an eccentric disc-shaped hob (13), a control box (14), a loading device (15), a conveying device (16), a temporary supporting device (17), and an auxiliary work platform (18);
the rack (2) being mounted on the crawler walking mechanism (1); the hydraulic pump station (3), the power box (4), the sliding guide rail base (5), the temporary supporting device (17), and the auxiliary work platform (18) being all mounted on the rack (2), wherein the hydraulic pump station (3) and the power box (4) are located at the tail of the rack (2) and arranged in a bilaterally symmetrical manner; the sliding guide rail base (5) is located on the front ends of the hydraulic pump station (3) and the 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) and below the rack (2); the sliding seat (7) is 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 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 the transmission box (8); output shafts of the hydraulic motors (9) are connected to transmission box input shafts (8-1); gears I (8-2) mounted on the transmission box input shafts (8-1) are engaged with gears II (8-3) mounted on a transmission box output shaft (8-4);
the hob arm rotating and sliding device (10) is mounted on the front end of the transmission box output shaft (8-4); the hob arm rotating and sliding device (10) comprises a housing (10-1) in a rectangular parallelepiped structure; a cylinder 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 inserted in the E-shaped groove (10-1-1) and connected to the cylinder mounting plate (10-3) through a propulsion cylinder II (10-2); the low-speed high-torque motor (12) is mounted on the front end of the hob arm (11); and the eccentric disc-shaped hob (13) is eccentrically mounted on the output shaft of the low-speed high-torque motor (12);
the propulsion cylinders I (6), the hydraulic motors (9), the propulsion cylinder II (10-2), the temporary supporting device (17), and the auxiliary work platform (18) are connected to the hydraulic pump station (3) through hydraulic circuits, respectively; the control box (14) is mounted on the upper end of the power box (4); and the low-speed high-torque motor (12) and the control box (14) are electrically connected to the power box (4), respectively.
the rack (2) being mounted on the crawler walking mechanism (1); the hydraulic pump station (3), the power box (4), the sliding guide rail base (5), the temporary supporting device (17), and the auxiliary work platform (18) being all mounted on the rack (2), wherein the hydraulic pump station (3) and the power box (4) are located at the tail of the rack (2) and arranged in a bilaterally symmetrical manner; the sliding guide rail base (5) is located on the front ends of the hydraulic pump station (3) and the 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) and below the rack (2); the sliding seat (7) is 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 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 the transmission box (8); output shafts of the hydraulic motors (9) are connected to transmission box input shafts (8-1); gears I (8-2) mounted on the transmission box input shafts (8-1) are engaged with gears II (8-3) mounted on a transmission box output shaft (8-4);
the hob arm rotating and sliding device (10) is mounted on the front end of the transmission box output shaft (8-4); the hob arm rotating and sliding device (10) comprises a housing (10-1) in a rectangular parallelepiped structure; a cylinder 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 inserted in the E-shaped groove (10-1-1) and connected to the cylinder mounting plate (10-3) through a propulsion cylinder II (10-2); the low-speed high-torque motor (12) is mounted on the front end of the hob arm (11); and the eccentric disc-shaped hob (13) is eccentrically mounted on the output shaft of the low-speed high-torque motor (12);
the propulsion cylinders I (6), the hydraulic motors (9), the propulsion cylinder II (10-2), the temporary supporting device (17), and the auxiliary work platform (18) are connected to the hydraulic pump station (3) through hydraulic circuits, respectively; the control box (14) is mounted on the upper end of the power box (4); and the low-speed high-torque motor (12) and the control box (14) are electrically connected to the power box (4), respectively.
2. The eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work according to claim 1, wherein the eccentric disc-shaped hob (13) comprises a circular disc-shaped cutter head (13-1);
the front end of the circular disc-shaped cutter head (13-1) is inlaid with a plurality of mechanical picks (13-2); a plurality of alloy heads (13-5) are welded on the circumference of the circular disc-shaped cutter head (13-1); the rear end of the circular disc-shaped cutter head (13-1) is machined with a hole (13-3) for mounting the output shaft of the low-speed high-torque motor (12); and a keyway (13-4) is machined in the hole (13-3).
the front end of the circular disc-shaped cutter head (13-1) is inlaid with a plurality of mechanical picks (13-2); a plurality of alloy heads (13-5) are welded on the circumference of the circular disc-shaped cutter head (13-1); the rear end of the circular disc-shaped cutter head (13-1) is machined with a hole (13-3) for mounting the output shaft of the low-speed high-torque motor (12); and a keyway (13-4) is machined in the hole (13-3).
3. The eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work according to claim 2, wherein the axis of the hole (13-3) is offset from the axis of the circular disc-shaped cutter head (13-1) by 2-5 cm.
4. The eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work according to claim 2, wherein the material of the mechanical picks (13-2) is hard alloy, and the mechanical picks (13-2) are arranged in an Archimedes spiral array on the front end of the circular disc-shaped cutter head (13-1), the direction of rotation being counterclockwise.
5. The eccentric hob type tunneling machine capable of breaking rock according to a predetermined 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 a predetermined path without affecting supporting work according to claim 2, wherein the material of the alloy heads (13-5) is hard alloy, and the alloy heads (13-5) are equidistantly 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 a predetermined 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 a predetermined path without affecting supporting work according to claim 1, wherein the hob arm (11) comprises an arm body (11-1) in a rectangular parallelepiped structure;
the front end face of the arm body (11-1) is provided with two parallel rectangular guide grooves (11-2) of equal width; and the hob arm (11) is positioned in the hob arm rotating and sliding device (10) through the two rectangular guide grooves (1 1-2).
the front end face of the arm body (11-1) is provided with two parallel rectangular guide grooves (11-2) of equal width; and the hob arm (11) is positioned in the hob arm rotating and sliding device (10) through the two rectangular guide grooves (1 1-2).
9. The eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work according to claim 1, wherein the temporary supporting device (17) consists of four propulsion cylinders III
and an arched supporting shed; the arched supporting shed is mounted on the upper ends of the four propulsion cylinders III; the lower ends of the four propulsion cylinders III are fixedly mounted on the rack; and the four propulsion cylinders III are connected to the hydraulic pump station (3) through hydraulic circuits, respectively.
and an arched supporting shed; the arched supporting shed is mounted on the upper ends of the four propulsion cylinders III; the lower ends of the four propulsion cylinders III are 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 a predetermined path without affecting supporting work according to claim 1, wherein the auxiliary work platform (18) consists of four propulsion cylinders IV and a work platform; the work platform 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; and the four propulsion cylinders IV are connected to the hydraulic pump station (3) through hydraulic circuits, respectively.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071177.X | 2019-11-05 | ||
| 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 |
|---|---|
| CA3101300A1 true CA3101300A1 (en) | 2021-02-12 |
| CA3101300C CA3101300C (en) | 2022-01-04 |
Family
ID=69272264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3101300A Active CA3101300C (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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412462A (en) * | 2022-01-19 | 2022-04-29 | 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 |
Families Citing this family (3)
| 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 |
| CN114876486B (en) * | 2022-05-20 | 2023-03-10 | 中国矿业大学 | Roadway tunneling robot and automatic cutting control method |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3467436A (en) * | 1966-04-13 | 1969-09-16 | Mining Progress Inc | Tunnelling machine with rotatable cutter carrying arm for 360 cutting |
| US3639004A (en) * | 1970-01-02 | 1972-02-01 | Greenside Machine Co Ltd | Tunneling machines |
| GB1450323A (en) * | 1974-03-01 | 1976-09-22 | Coal Industry Patents Ltd | Rock excavating machines |
| CA1033373A (en) * | 1975-04-17 | 1978-06-20 | Karl-Gunther Bechem | Mining machine and a method for mining of minerals |
| GB1551916A (en) * | 1976-08-03 | 1979-09-05 | Nuttall Ltd Edmund | Tunnelling machines |
| DE2710960C2 (en) * | 1977-03-12 | 1981-07-02 | Friedrich Wilhelm 4223 Voerde Paurat | Road or tunnel boring machine |
| DE3327941A1 (en) * | 1983-08-03 | 1985-02-21 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | DISMANTLING AND DRIVING MACHINE |
| US4548442A (en) * | 1983-12-06 | 1985-10-22 | The Robbins Company | Mobile mining machine and method |
| DE3801219A1 (en) * | 1987-07-08 | 1989-01-19 | Dosco Overseas Eng Ltd | ESCAPE PROCEDURE AND DEVICE |
| DE4015462A1 (en) * | 1990-05-14 | 1991-11-21 | Wirth Co Kg Masch Bohr | METHOD AND MACHINE FOR PROCESSING ROUTES, TUNNELS OR THE LIKE |
| JP3076445B2 (en) * | 1992-04-22 | 2000-08-14 | 株式会社小松製作所 | Rock excavator |
| JP3322716B2 (en) * | 1993-03-05 | 2002-09-09 | 株式会社フジタ | Tunnel construction method |
| CN100487223C (en) * | 2003-12-04 | 2009-05-13 | 上海隧道工程股份有限公司 | Eccentric multi-axial multi-cutter type tunnelling machine |
| AT506501B1 (en) | 2008-02-15 | 2011-04-15 | Sandvik Mining & Constr Oy | RANGE BORING MACHINE |
| KR101233977B1 (en) | 2011-09-26 | 2013-03-06 | 한스개발주식회사 | Small size tunneling machine using hydraulic cylinder for moving, and tunneling method using the same |
| CN102364048B (en) | 2011-10-11 | 2014-01-15 | 马晓山 | Comprehensive mechanized rock roadway tunneling machine |
| CN103590837A (en) * | 2013-11-20 | 2014-02-19 | 天津大学 | Eccentric cutter type shield machine cutterhead |
| CA3012831A1 (en) * | 2016-01-27 | 2017-08-03 | Joy Global Underground Mining Llc | Mining machine with multiple cutter heads |
| WO2018035425A1 (en) * | 2016-08-19 | 2018-02-22 | Joy Mm Delaware, Inc. | Mining machine with articulating boom and independent material handling system |
| JP2019157418A (en) * | 2018-03-09 | 2019-09-19 | カヤバ システム マシナリー株式会社 | Drilling machine |
| CN110359922A (en) * | 2019-07-12 | 2019-10-22 | 天地科技股份有限公司 | Rocker-arm development machine and tunnelling construction method |
| 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 |
-
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 AU AU2020277229A patent/AU2020277229B2/en active Active
- 2020-04-14 JP JP2020568308A patent/JP7094584B2/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412462A (en) * | 2022-01-19 | 2022-04-29 | 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| SE545716C2 (en) | 2023-12-19 |
| AU2020277229A1 (en) | 2021-05-20 |
| JP7094584B2 (en) | 2022-07-04 |
| AU2020277229B2 (en) | 2022-02-17 |
| CN110735647A (en) | 2020-01-31 |
| SE2130147A1 (en) | 2021-06-01 |
| CA3101300C (en) | 2022-01-04 |
| CN110735647B (en) | 2020-09-01 |
| WO2021088316A1 (en) | 2021-05-14 |
| JP2022500574A (en) | 2022-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2673569C1 (en) | Drilling and blasting tunneling machine | |
| CA3101300A1 (en) | Eccentric hob type tunneling machine capable of breaking rock according to predetermined path without affecting supporting work | |
| CN100559013C (en) | Tunneling, anchoring and drilling composite machine | |
| CN202745687U (en) | Reciprocating impact tunnel drilling machine | |
| CN102654053B (en) | Efficient block digger | |
| CN202745869U (en) | Efficient block mining machine | |
| CN203271752U (en) | Multifunctional underground roadway tunneling locomotive | |
| CN208578571U (en) | A kind of impact grinding combination tup of rock tunnelling bolting combined machine | |
| CN101169036B (en) | Pedrail type lifting top slope anchor shaft anchor cable construction drilling machine and single-alley fast tunneling technique | |
| CN201424939Y (en) | Improved coal road boring machine | |
| CN112145192A (en) | Soft rock tunnel boring machine and construction method thereof | |
| CN102678111B (en) | High-efficiency blocking coal shovel | |
| CN103195421B (en) | Reciprocating impact tunnel boring machine | |
| CN103216227A (en) | Boring machine with reciprocating direct-impact effect | |
| CN113464135B (en) | Protection device for coal mine tunneling | |
| CN202745868U (en) | Boring machine with reciprocating direct-impact effect | |
| CN102996123A (en) | Bidirectional material impacting method and bidirectional material impacting device | |
| CN110185465A (en) | Cutting units, tunneling equipment and driving method | |
| CN102168557A (en) | Spinning coal mining machine | |
| CN103216226A (en) | Water-jet cutting and impacting mining machine | |
| CN202745866U (en) | Water-jet cutting and impacting mining machine | |
| CN202745867U (en) | Coal mining machine with water-jet cutter | |
| CN111997643A (en) | Multi-hammer type tunnel boring machine, control method and application | |
| CN101818649B (en) | Hydraulic supporting device for fully-mechanized coal driving workface | |
| CN206111178U (en) | Equipment is reprinted in pit in colliery with fluting function |