WO2021088316A1

WO2021088316A1 - Eccentric hob type heading machine capable of breaking rock according to predetermined path without affecting supporting work

Info

Publication number: WO2021088316A1
Application number: PCT/CN2020/084608
Authority: WO
Inventors: 江红祥; 朱真才; 刘送永
Original assignee: 中国矿业大学
Priority date: 2019-11-05
Filing date: 2020-04-14
Publication date: 2021-05-14
Also published as: CA3101300A1; CA3101300C; CN110735647A; SE545716C2; AU2020277229B2; CN110735647B; SE2130147A1; JP7094584B2; JP2022500574A; AU2020277229A1

Abstract

An eccentric hob type heading machine capable of breaking rock according to a predetermined path without affecting supporting work, mainly consisting of a crawler travel mechanism (1), a rack (2), a hydraulic pumping station (3), a power box (4), a sliding guide rail base (5), a thrust cylinder I (6), a sliding seat (7), a transmission box (8), a hydraulic motor (9), a hob arm rotating slide device (10), a hob arm (11), a low-speed high-torque motor (12), an eccentric disc hob (13), a control cabinet (14), a loading device (15), a conveying device (16), a temporary supporting device (17), an auxiliary operating platform (18). The rock breaking route of the heading machine can be adjusted according to different cross sections, and the heading machine has the effect of rock breaking by vibration milling.

Description

The eccentric hob type roadheader that does not affect the support operation and can break the rock according to the predetermined path

Technical field

The invention belongs to the technical field of coal mining, and relates to a tunneling mechanical equipment, in particular to an eccentric hob-type tunneling machine that does not affect supporting operations and can break rock according to a predetermined path.

Background technique

In 2018, the "BP World Energy Statistics Yearbook" pointed out: China is still the world's largest energy consumer, accounting for 23.2% of global consumption and 33.6% of global net growth; coal resource consumption accounts for 60.4% of total consumption, and in the future For a long period of time, it has an irreplaceable status as my country's main energy source. As my country's demand for coal energy continues to increase, the misalignment of mining ratios due to rock tunnel excavation difficulties has become the main reason that restricts coal mining in my country. Nowadays, with the mature application of mechanized coal mining, mining efficiency has been greatly improved, and the phenomenon of unbalanced mining ratio has become more prominent. Hard rock tunneling machinery and equipment has become a constraint on the coordinated progress of coal mining and roadway excavation. bottleneck". Especially for hard rocks with Platts hardness coefficient f ≥ 10, the impact and wear on the tunneling mechanism and its installed tools during construction will increase. Coupled with space constraints, the working environment of the tunneling equipment will be more severe, making the tunneling mechanism harder. The rock tunnel excavation effect is poor and the excavation cost is high.

In the existing technology, the drilling and blasting method and mechanical pick rock breaking are often used in the tunneling of coal mines. Although the drilling and blasting method has high efficiency and strong applicability to the formation, its dust and poisonous gas emissions are large, and it is easy to cause gas. Major accidents such as explosions are therefore not conducive to safe, efficient and green mining of ore body resources. However, mechanical picks are difficult to crush hard rock and have heavy load. The picks are easily damaged and need to be replaced frequently. The efficiency of rock tunnel excavation is low and the cost is high. The underground test proves that the cutting method of pick milling and breaking rock is difficult to realize the economic excavation of hard rock roadways.

Summary of the invention

The purpose of the present invention is to provide an eccentric hob type roadheader that does not affect the support operation and can break the rock according to a predetermined path, and makes full use of the characteristics of the eccentric disc hob vibration milling with small load, high performance and high efficiency, and achieves rigidity. The rapid breaking of the rock increases the speed of tunneling in coal mines.

In order to achieve the above objectives, the technical solution adopted by the present invention is as follows: an eccentric hob type roadheader that does not affect the support operation and can break the rock according to a predetermined path, including a crawler walking mechanism, a frame, a hydraulic pump station, a power box, Sliding rail base, propulsion cylinder I, sliding seat, transmission box, hob arm rotary sliding device, hob arm, low-speed high-torque motor, eccentric disc hob, control box, loading device, conveying device, temporary support device And auxiliary operating platforms;

The frame is installed on the crawler walking mechanism, the hydraulic pump station, the power box, the sliding guide rail base, the temporary support device and the auxiliary work platform are all installed on the frame, wherein the hydraulic pump station and The power box is located at the rear of the rack and is symmetrically arranged left and right. The sliding track base is located at the front end of the hydraulic pump station and the power box, the loading device is installed at the front end of the rack, and the conveying device is installed on the loading device. In the middle and under the frame, the sliding seat is slidably mounted on the sliding guide rail base, and is connected to the sliding guide rail base by two propulsion cylinders I, and the transmission box is installed at the front end of the sliding seat Two hydraulic motors are installed symmetrically on the box body of the transmission box. The output shaft of the hydraulic motor is connected with the input shaft of the transmission box. The gear I installed on the input shaft of the transmission box meshes with the gear II installed on the output shaft of the transmission box. The hob arm rotating and sliding device is installed at the front end of the output shaft of the transmission box, the hob arm rotating and sliding device includes a cuboid structure housing, an oil cylinder mounting plate is fixed at the upper end of the housing, and the housing is An E-shaped groove is provided. The hob arm is inserted into the E-shaped groove and is connected to the oil cylinder mounting plate through a propulsion oil cylinder II. The low-speed and high-torque motor is installed at the front end of the hob arm. The eccentric disc hob is eccentric Installed on the output shaft of a low-speed high-torque motor;

The propulsion cylinder I, the hydraulic motor, the propulsion cylinder II, the temporary support device, and the auxiliary work platform are respectively connected to the hydraulic pump station through a hydraulic oil circuit, the control box is installed at the upper end of the power box, and the low-speed large The torque motor and the control box are respectively electrically connected with the power box.

Further, the eccentric disc-shaped hob includes a disc-shaped cutter head, the front end of the disc-shaped cutter head is inlaid with a plurality of mechanical picks, and a plurality of alloy heads are welded on the circumference of the disc-shaped cutter head. The rear end of the shaped cutter head is machined with a hole for installing the output shaft of a low-speed and high-torque motor, and a keyway is machined in the hole.

Preferably, the axis of the hole is offset from the axis of the disc-shaped cutter head by 2-5 cm, so that the eccentric disc-shaped hob will vibrate to a certain extent during the rotation.

Preferably, the material of the mechanical pick is hard alloy, and the mechanical pick presents an Archimedes spiral array at the front end of the disc-shaped cutter head, and the direction of rotation is counterclockwise.

More preferably, there are a total of 12 Archimedes spirals arrayed.

Preferably, the alloy head material is cemented carbide, and the alloy heads are equidistantly distributed on the circumference of the disc-shaped cutter head.

Preferably, the rotation of the low-speed and high-torque motor is counterclockwise, which can reduce the load of the mechanical picks during rock breaking according to the shape of the spiral line of the mechanical picks.

Further, the hob arm includes an arm body having a rectangular parallelepiped structure, and two parallel rectangular guide grooves of equal width are opened on the front end of the arm body, and the hob arm is realized by two rectangular guide grooves. Positioning in the rotary sliding device of the hob arm.

Further, the temporary support device is composed of four propulsion cylinders III and an arched support canopy. The arched support canopy is installed at the upper ends of the four propulsion cylinders III, and the lower ends of the four propulsion cylinders III are fixedly installed on the frame. The four propulsion cylinders III are respectively connected with the hydraulic pump station through hydraulic oil circuits.

Further, the auxiliary work platform is composed of four propulsion cylinders IV and a work platform. The work platform is installed at the upper ends of the four propulsion cylinders IV, and the lower ends of the four propulsion cylinders IV are fixedly installed on the frame, and the four propulsion cylinders IV are fixedly mounted on the frame. They are respectively connected with the hydraulic pump station through a hydraulic oil circuit.

Compared with the prior art, the present invention has the following beneficial effects:

The invention has simple, compact and reliable structure, convenient installation and disassembly, and makes full use of the characteristics of low tensile strength of hard rock mass, strong rock breaking ability and high efficiency; the rock breaking route of the hob can be adjusted according to different cross-sections, which is flexible to adapt to the cross-section; disc-shaped rolling The cutter milling rock breaking load is small, the performance is high, the efficiency is high, and the hob rotates eccentrically, so that the hob can achieve the effect of vibration milling rock breaking, thereby further improving the performance of the hob milling rock breaking. Several mechanical picks are installed on the front end of the hob cutter, which can partially crush the rock through the picks, so that the hob can be moved quickly without being affected by the milling angle of the hob. The sliding seat moves back and forth, not only can provide huge thrust during the partial crushing of the rock by the picks, but also can realize the crushing of different depths of rock when the roadheader is stationary, avoiding the crawler walking mechanism to move once in a driving cycle, thereby improving the roadway excavation During drilling and milling, the crawler walking mechanism and the frame do not move, which will not affect the temporary support operations and auxiliary operations, which is of great significance for realizing the efficient excavation of hard rock roadways.

Description of the drawings

Fig. 1 is a schematic diagram of an eccentric hob type roadheader that does not affect supporting operations and can break rock according to a predetermined path according to the present invention;

Figure 2 is a schematic diagram of the structure of the transmission box of the present invention;

Figure 3 is a partial cross-section of the front view of the rotary sliding device of the hob arm of the present invention;

4 is a partial cross-sectional view of the left side view of the rotary sliding device of the hob arm of the present invention;

Figure 5 is an axial view of the housing of the present invention;

Figure 6 is an axial view of the hob arm of the present invention;

Figure 7 is a partial cross-section of the front view of the eccentric disc hob of the present invention;

Figure 8 is an axial view of the eccentric disc hob of the present invention;

Figure 9 is a schematic diagram of the milling route of the eccentric disc hob of the present invention;

In the figure: 1—crawler walking mechanism; 2—frame; 3—hydraulic pump station; 4—power box; 5—sliding guide rail base; 6—propelling cylinder I; 7—sliding seat; 8—transmission box; 8- 1—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; 10—Rotating and sliding device of hob arm 10-1—housing; 10-1-1—E groove; 10-2—propelling cylinder II; 10-3—cylinder mounting plate; 11—hob arm; 11-1—arm body; 11-2 —Rectangular guide groove; 12—low-speed high-torque motor; 13—eccentric disc hob; 13-1—disc 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 support device; 18—auxiliary work platform.

Detailed ways

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

As shown in Figure 1, an eccentric hob type roadheader of the present invention that does not affect supporting operations and can break rock according to a predetermined path includes crawler walking mechanism 1, frame 2, hydraulic pump station 3, power box 4, and sliding Guide rail base 5, propulsion cylinder I6, sliding seat 7, transmission box 8, hob arm rotary sliding device 10, hob arm 11, low-speed high-torque motor 12, eccentric disc hob 13, control box 14, loading device 15 , Conveying device 16, temporary support device 17, and auxiliary work platform 18.

The frame 2 is the tie of each component of the roadheader of the present invention, the crawler walking mechanism 1 is installed under the frame 2 for realizing the traveling of the roadheader, the hydraulic pump station 3, the power box 4, the sliding guide rail base 5, The temporary support device 17 and the auxiliary work platform 18 are both installed on the frame 2. The hydraulic pump station 3 and the power box 4 are located at the rear of the frame 2 and are arranged symmetrically. The loading device 15 is installed at the front end of the frame 2. A conveying device 16 is installed in the middle of the loading device 15 and under the frame 2 to convey the milled and broken rocks out of the tunnel. The sliding seat 7 is slidably installed on the sliding guide rail base 5 and passes between the sliding guide rail base 5 The two propulsion cylinders I6 are connected, and the sliding seat 7 can be moved back and forth on the sliding rail base 5 by controlling the expansion and contraction of the piston rod of the propulsion cylinder I6.

As shown in Figures 1 and 2, the transmission box 8 is installed at the front end of the sliding seat 7. The transmission box includes a box 8-5, and two hydraulic motors 9 are symmetrically installed on the box 8-5 of the transmission box. The box 8-5 is provided with two transmission box input shafts 8-1 and one transmission box output shaft 8-4. The output shaft of the hydraulic motor 9 is connected with the transmission box input shaft 8-1 and is installed in the transmission box. The two gears I8-2 on the input shaft 8-1 of the transmission box respectively mesh with the two gears II8-3 installed on the output shaft 8-4 of the transmission box.

As shown in Figs. 1, 3 to 5, the hob arm rotating and sliding device 10 is installed at the front end of the output shaft 8-4 of the transmission box, and the hob arm rotating and sliding device 10 includes a cuboid-shaped housing 10-1. An oil cylinder mounting plate 10-3 is fixed at the upper end of the housing 10-1, and 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 having a rectangular parallelepiped structure, and two parallel rectangular guide grooves 11-2 of equal width are opened on the front end surface of the arm body 11-1. The width of the arm body 11-1 is adapted to the width of the E-shaped groove 10-1-1. The hob arm 11 is inserted into the E-shaped groove 10-1-1 and the cylinder mounting plate 10-3 is connected through the propulsion cylinder II10-2, and the hob arm 11 can be opposed by controlling the expansion and contraction of the piston rod of the propulsion cylinder II10-2 For the sliding of the hob arm rotating and sliding device 10, the hob arm rotating and sliding device 10 can be rotated by controlling the rotation angles of the output shafts of the two hydraulic motors 9 so that the hob arm 11 can rotate.

As shown in Figure 1, Figure 7, Figure 8, the low-speed high-torque motor 12 is installed at one end of the hob arm 11, the eccentric disc-shaped hob 13 includes a disc-shaped cutter head 13-1, The front end of the cutter head 13-1 is inlaid with a plurality of mechanical picks 13-2. The material of the mechanical picks 13-2 is cemented carbide, which has high hardness and good wear resistance. The mechanical picks 13-2 are in a disc-shaped knife. The front end of the disk 13-1 presents an array of Archimedes spirals, and the rotation direction is counterclockwise. There are 12 Archimedes spirals arrayed in this embodiment. A number of alloy heads 13-5 are welded on the circumference of the disc-shaped cutter head 13-1. The alloy head 13-5 is made of cemented carbide, which has high hardness and good wear resistance. The alloy head 13-5 is in the disc-shaped The cutter head 13-1 is equally spaced on the circumference. A hole 13-3 is machined at the rear end of the disc-shaped cutter head 13-1. The axis of the hole 13-3 is offset from the axis of the disc-shaped cutter head 13-1 by 2-5 cm. In the hole 13-3 The keyway 13-4 is machined. The eccentric disc hob 13 is eccentrically installed on the output shaft of the low-speed high-torque motor 12 through the hole 13-3. Due to the eccentric installation, the eccentric disc hob 13 will produce a certain amount during the milling process. The low-speed high-torque motor 12 drives the eccentric disc hob 13 to drill and vibrate hard rock. The milling route is shown in Figure 9. The rotation of the low-speed high-torque motor 12 is counterclockwise, which can reduce the load of the mechanical pick 13-2 during rock breaking according to the shape of the spiral line of the mechanical pick 13-2.

The eccentric disc hob 13 can keep the frame 2 still in the process of drilling and milling, and realize the movement by controlling the sliding seat 7 to slide on the sliding guide base 5, so the eccentric disc hob 13 The process of drilling and milling does not affect temporary support and auxiliary operations.

As shown in Figure 1, the temporary support device 17 is composed of four propulsion cylinders III and an arched support canopy. The arched support canopy is installed at the upper end of the four propulsion cylinders III, and the lower end of the four propulsion cylinders III is fixedly installed at the lower end. On the rack. The auxiliary work platform 18 is composed of four propulsion cylinders IV and a work platform. The work platform is installed at the upper ends of the four propulsion cylinders IV, and the lower ends of the four propulsion cylinders IV are fixedly installed on the frame.

The propulsion cylinder I6, the hydraulic motor 9, the propulsion cylinder II10-2, the propulsion cylinder III, and the propulsion cylinder IV are respectively connected to the hydraulic pump station 3 through a hydraulic oil circuit, and the hydraulic pump station 3 provides high-pressure oil for it.

The control box 14 is installed at the upper end of the power box 4, and can control the movement of each part of the roadheader 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 electrical energy for it.

Working principle: When the eccentric hob type roadheader, which does not affect the support operation and can break the rock according to the predetermined path, is used for roadway excavation, the power system of the working face will supply power to the hydraulic pump station 3, and the hydraulic pump station 3 will be formed after being energized High-pressure oil: high-pressure oil is supplied to the propulsion cylinder I6, which can make the propulsion cylinder I6 output the propulsion force through the sliding seat 7, the transmission box 8, the rotary sliding device 10 of the hob arm and the hob arm 11 to realize the front and back of the eccentric disc hob 13 Move; high-pressure oil is supplied to the hydraulic motor 9 to make the hydraulic motor 9 output power through the transmission box input shaft 8-1, gear I8-2, gear II8-3, transmission box output shaft 8-4, hob arm rotary sliding device 10 and the hob arm 11, realize the eccentric disc hob 13 moves circumferentially on the milling working surface; high-pressure oil is supplied to the propulsion cylinder II10-2, so that the propulsion output of the propulsion cylinder II10-2 can be transmitted to the hob arm 11 The eccentric disc hob 13 makes the eccentric disc hob 13 move in the normal direction on the milling working surface; the high-pressure oil supplies the temporary support device 17, so that the temporary support device 17 completes the support of the roadway; high-pressure oil supply The auxiliary work platform 18 adjusts the auxiliary work platform 18 to an appropriate height to complete auxiliary operations (such as anchors and guards). The power box 4 provides power for the control box 14 and the low-speed high-torque motor 12. First, according to the area of the excavated roadway section, a milling route of the eccentric disc hob 13 is designed and input to the control box 14. Then, the control box 14 controls the piston rod of the propulsion cylinder I6 to shrink to the shortest length, so that the eccentric disc hob 13 moves to the end of the propulsion stroke; controls the piston rod of the propulsion cylinder II10-2 to shrink to the shortest, thereby making the disc hob 13 Move to the starting point of the milling route; control the movement of the crawler walking mechanism 1 to make the roadheader move to a suitable position as a whole. The temporary support device 17 is controlled to be raised to complete the temporary support of the roadway. Start the low-speed and high-torque motor 12 to make the eccentric disc hob 13 rotate. At the same time, the piston rod of the propulsion cylinder I6 is controlled to extend, so that the eccentric disc hob 13 drills a 5-10cm deep hole in the rock and locks it. Dead propulsion cylinder I6. Finally, control the hydraulic motor 9 and the propulsion cylinder II10-2 at the same time to make the eccentric disc hob 13 rotate and mill and crush the hard rock according to the preset route. While the eccentric disc hob 13 mills and breaks the hard rock, the auxiliary can be adjusted. The height of the work platform in order to complete some auxiliary work (such as anchors, protection). When the tunneling of one section is completed, adjust the propulsion cylinder I6, hydraulic motor 9 and propulsion cylinder II10-2 in the same way, and proceed with the tunneling of the next section. Repeat the above process. When the piston rod of the propulsion cylinder I6 extends to the longest At the position, exit the temporary support device 17, retract the piston rod of the propulsion cylinder I6 to the shortest, and move the roadheader forward to a suitable position by controlling the crawler walking mechanism 1, and continue the excavation work, and continue to cycle until the excavation is completed. In the above-mentioned tunneling process, the broken rocks are transported out of the tunnel through the loading device 15 and the conveying device 16.

Claims

An eccentric hob type roadheader that does not affect supporting operations and can break rock according to a predetermined path, which is characterized in that it includes a crawler walking mechanism (1), a frame (2), a hydraulic pump station (3), and a power box ( 4) Sliding guide rail base (5), propulsion cylinder I (6), sliding seat (7), transmission box (8), hob arm rotary sliding device (10), hob arm (11), low speed and high torque Motor (12), eccentric disc hob (13), control box (14), loading device (15), conveying device (16), temporary support device (17) and auxiliary work platform (18);

The frame (2) is installed on the crawler walking mechanism (1), the hydraulic pump station (3), power box (4), sliding guide rail base (5), temporary support device (17) and The auxiliary work platforms (18) are all installed on the frame (2), wherein the hydraulic pump station (3) and the power box (4) are located at the rear of the frame (2) and are arranged symmetrically. The sliding track base (5) is located at the front end of the hydraulic pump station (3) and the power box (4), the loading device (15) is installed at the front end of the frame (2), and the conveying device (16) is installed In the middle of the loading device (15) and under the rack (2), the sliding seat (7) is slidably mounted on the sliding rail base (5) and passes through two The propulsion cylinder I (6) is connected, the transmission box (8) is installed at the front end of the sliding seat (7), and two hydraulic motors (9) are symmetrically installed on the box body of the transmission box (8), so The output shaft of the hydraulic motor (9) is connected with the input shaft (8-1) of the transmission box, the gear I (8-2) installed on the input shaft (8-1) of the transmission box and the output shaft (8- 4) The gear II (8-3) on the gear meshes, the hob arm rotating and sliding device (10) is installed at the front end of the transmission box output shaft (8-4), and the hob arm rotating and sliding device (10) It includes a casing (10-1) with a rectangular parallelepiped structure, a cylinder mounting plate (10-3) is fixed at the upper end of the casing (10-1), and an E-shaped groove is provided in the casing (10-1) (10-1-1), the hob arm (11) is inserted into the E-shaped groove (10-1-1) and the cylinder mounting plate (10-3) is connected with the propulsion cylinder II (10-2), The low-speed high-torque motor (12) is installed at the front end of the hob arm (11), and the eccentric disc-shaped hob (13) is eccentrically installed on the output shaft of the low-speed high-torque motor (12);

The propulsion cylinder I (6), the hydraulic motor (9), the propulsion cylinder II (10-2), the temporary support device (17) and the auxiliary work platform (18) are connected to the hydraulic pump station (3) through hydraulic Oil circuit connection, the control box (14) is installed at the upper end of the power box (4), and the low-speed high-torque motor (12) and the control box (14) are electrically connected with the power box (4) respectively.
The eccentric hob type roadheader that does not affect the supporting operation and can break the rock according to a predetermined path according to claim 1, wherein the eccentric disc hob (13) comprises a disc-shaped cutter head ( 13-1), the front end of the disc-shaped cutter head (13-1) is inlaid with a plurality of mechanical picks (13-2), and the circumference of the disc-shaped cutter head (13-1) is welded with a plurality of alloy heads (13-5), the rear end of the disc-shaped cutter head (13-1) is machined with a hole (13-3) for installing the output shaft of the low-speed high-torque motor (12), in the hole (13-3) Machined with keyway (13-4).
The eccentric hob type roadheader that does not affect the supporting operation and can break the rock according to a predetermined path according to claim 2, wherein the axis of the hole (13-3) is aligned with the disc-shaped cutter head (13). The axis of -1) is offset by 2-5 cm.
The eccentric hob type roadheader that does not affect the support operation and can break rock according to a predetermined path according to claim 2, wherein the material of the mechanical pick (13-2) is cemented carbide, and the mechanical The pick (13-2) presents an Archimedes spiral array at the front end of the disc-shaped cutter head (13-1), and the rotation direction is counterclockwise.
According to claim 4, an eccentric hob type roadheader that does not affect the supporting operation and can break the rock according to a predetermined path, characterized in that there are 12 Archimedes spirals arrayed in total.
The eccentric hob type roadheader that does not affect the supporting operation and can break rock according to a predetermined path according to claim 2, wherein the alloy head (13-5) is made of cemented carbide, and the alloy head (13-5) are equally spaced on the circumference of the disc-shaped cutter head (13-1).
The eccentric hob type roadheader that does not affect the supporting operation and can break the rock according to a predetermined path according to claim 1, wherein the rotation of the low-speed and high-torque motor (12) is counterclockwise.
The eccentric hob type roadheader that does not affect the supporting operation and can break the rock according to a predetermined path according to claim 1, wherein the hob arm (11) comprises an arm body (11) in a rectangular parallelepiped structure. -1), the front end surface of the arm body (11-1) is provided with two parallel rectangular guide grooves (11-2) of equal width, and the hob arm (11) passes through the two rectangular guide grooves ( 11-2) Realize positioning in the rotary sliding device (10) of the hob arm.
The eccentric hob type roadheader that does not affect the support operation and can break rock according to a predetermined path according to claim 1, wherein the temporary support device (17) consists of four propulsion cylinders III and arch The arch-shaped support shed is installed at the upper end of four propulsion cylinders III, the lower end of the four propulsion cylinders III is fixedly installed on the frame, and the four propulsion cylinders III are connected to the hydraulic pump station (3) through hydraulic Oil connection.
The eccentric hob type roadheader that does not affect the support operation and can break rock according to a predetermined path according to claim 1, wherein the auxiliary work platform (18) is composed of four propulsion cylinders IV and a work platform The work platform is installed on the upper ends of four propulsion cylinders IV, the lower ends of the four propulsion cylinders IV are fixedly installed on the frame, and the four propulsion cylinders IV are respectively connected with the hydraulic pump station (3) through hydraulic oil circuits.