WO2024098606A1

WO2024098606A1 - Zdy4200ls type crawler-type full-hydraulic tunnel drilling rig for coal mine

Info

Publication number: WO2024098606A1
Application number: PCT/CN2023/080969
Authority: WO
Inventors: 冯金义; 殷衍泽; 王义勇; 臧涛; 秦阳; 靳鑫; 杨凯; 赵凯; 贾斌
Original assignee: 山东方大工程有限责任公司
Priority date: 2022-11-08
Filing date: 2023-03-13
Publication date: 2024-05-16
Also published as: CN115614052A; ZA202304285B

Abstract

A ZDY4200LS type crawler-type full-hydraulic tunnel drilling rig for coal mine, comprising a main machine compartment. Crawler driving mechanisms are jointly arranged at the two ends of the main machine compartment. A second servo motor is installed inside the main machine compartment at the middle of the top thereof. A connecting bearing is installed at the middle of the outer side of an output shaft of the second servo motor. A second circular plate is installed on the outer side of the connecting bearing. Four sets of first hydraulic cylinders are evenly installed at the edge of the top of the second circular plate. According to the invention, a first servo motor is controlled to drive a driving gear to rotate anticlockwise, the second circular plate is driven to rotate clockwise by 90 degrees, two pairs of first hydraulic cylinders are located at the two sides of the main machine compartment respectively, and the two pairs of first hydraulic cylinders are controlled to extend until support pads at the top ends of the two pairs of first hydraulic cylinders are pushing against the inner wall of two sides of a coal mine tunnel, such that the position of the entire crawler-type full-hydraulic tunnel drilling rig is more stable, and the drilling effect of the entire crawler-type full-hydraulic tunnel drilling rig in a coal mine tunnel can be ensured.

Description

ZDY4200LS crawler type fully hydraulic tunnel drilling rig for coal mines

Technical Field

The invention relates to the technical field of drilling equipment, in particular to a ZDY4200LS crawler-type full-hydraulic tunnel drilling rig for coal mines.

Background technique

With the rapid development of society, the demand for mineral resources is gradually increasing. In order to meet the demand for mineral resources, the high-efficiency mining method of mechanized supporting operations will inevitably be vigorously developed. Crawler-type fully hydraulic tunnel drilling rigs are widely used in the mining of coal, copper, chromium and other mineral resources due to their reliable passability and stability.

The current crawler-type fully hydraulic tunnel drill rig often relies on its own weight to ensure the drilling stability of the crawler-type fully hydraulic tunnel drill rig during the drilling process, and cannot fully ensure the stability of the entire drill rig during the drilling process, which will affect the drilling effect of the entire crawler-type fully hydraulic tunnel drill rig; and due to the narrow space of the coal mine tunnel, the crawler-type fully hydraulic tunnel drill rig can often only travel forward and backward, and cannot move freely in different directions in the coal mine tunnel, thereby reducing the convenience of the entire drilling rig during use, and it is also impossible to drill holes in the tunnels in all directions of the equipment; at the same time, the drilling mechanism of the current crawler-type fully hydraulic tunnel drill rig is in an upright state, which will make the center of gravity of the entire crawler-type fully hydraulic tunnel drill rig very unstable, which will affect the drilling stability of the drilling mechanism.

Summary of the invention

The purpose of the present invention is to provide a new type of crawler-type fully hydraulic tunnel drilling rig for coal mines to solve the relevant problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A novel crawler-type fully hydraulic tunnel drilling rig for coal mines, comprising a main engine compartment, a crawler driving mechanism is commonly arranged at both ends of the main engine compartment, a second servo motor is installed at the middle position of the top of the main engine compartment, and a connecting bearing is installed at the middle position of the outer side of the output shaft of the second servo motor, a second circular plate is installed at the outer side of the connecting bearing, four groups of first hydraulic cylinders are evenly installed at the edge position of the top of the second circular plate, and the output ends of the four groups of first hydraulic cylinders are all installed with support pads, and the outer ring of the second circular plate is A ring rack is installed at the position, a first servo motor is installed at the middle position of one end of the top in the main engine warehouse, and the output shaft of the first servo motor extends to the top of the main engine warehouse and is installed with a driving gear meshing with the ring rack, a first circular plate is installed at the top of the output shaft of the second servo motor, slots are symmetrically opened on both sides of the first circular plate, and rods are inserted in the slots, two groups of the rods extend to the outside of the first circular plate away from the end of the driving gear and are jointly installed with a connecting plate, the top of the connecting plate is hinged with a mounting plate, and a drilling assembly is arranged on the top of the mounting plate, second hydraulic cylinders are symmetrically hinged with two sides of the top of the first circular plate away from one end of the connecting plate, and the tops of the two groups of the second hydraulic cylinders are respectively hinged to the middle positions of both sides of the bottom of the mounting plate.

Preferably, the drilling assembly includes a sliding rod, a third hydraulic cylinder, a first movable plate, a driving motor, a fourth hydraulic cylinder, a second movable plate, a drill rod and a drill bit, the sliding rods are symmetrically installed on both sides of the top of the mounting plate, and the first movable plate and the second movable plate are jointly sleeved on the outer sides of the two groups of sliding rods, the first movable plate and the second movable plate are fixedly connected, the driving motor is installed at the middle position of the first movable plate away from one end of the second movable plate, and the drill rod is installed at the output end of the driving motor, the end of the drill rod away from the first movable plate passes through the second movable plate and is installed with a drill bit, the third hydraulic cylinders are symmetrically installed on both sides of the mounting plate close to one end of the driving motor, and the output ends of the two groups of third hydraulic cylinders pass through the first movable plate and are fixedly connected to the second movable plate, and the fourth hydraulic cylinders are symmetrically installed at the middle position of both sides of the top of the mounting plate.

Preferably, the output ends of the two groups of the fourth hydraulic cylinders are both equipped with pads, and the outer sides of the pads are provided with a wear-resistant layer.

Preferably, a protection bin is installed at a middle position of the first movable plate away from one end of the second movable plate, and the drive motor is located inside the protection bin.

Preferably, connecting slide grooves are symmetrically provided on both inner sides of the slot, and connecting sliding blocks cooperating with the connecting slide grooves are symmetrically installed on both sides of the insertion rod at one end away from the connecting plate.

Preferably, limit blocks are symmetrically installed on both sides of the top of the connecting plate, and limit slots cooperating with the limit blocks are symmetrically opened on both sides of the mounting plate close to one end of the connecting plate.

Preferably, a placement groove is provided at one end of the top of the first circular plate away from the connecting plate, and a counterweight block is arranged inside the placement groove.

Preferably, a return spring is installed at one end of the slot away from the connecting plate, and the end of the return spring close to the connecting plate is fixedly connected to the insertion rod.

Preferably, first rollers are evenly installed at non-central positions of the bottom of the first circular plate. Second rollers are evenly installed at non-central positions of the bottoms of the two circular plates.

Compared with the prior art, the present invention provides a new crawler-type fully hydraulic tunnel drilling rig for coal mines, which has the following beneficial effects:

1. Before drilling, the present invention controls the first servo motor to drive the driving gear to rotate counterclockwise, and utilizes the transmission of the driving gear and the annular rack to drive the second circular plate to rotate 90° clockwise, so that the two pairs of first hydraulic cylinders on the second circular plate are respectively located at the two sides of the main engine compartment, and then the two pairs of first hydraulic cylinders are controlled to extend until the support pads at the top of the two pairs of first hydraulic cylinders are respectively against the inner walls on both sides of the coal mine tunnel, so that the position of the entire crawler-type full-hydraulic tunnel drilling rig is more stable, providing a stable base support for subsequent drilling operations, thereby ensuring the drilling effect of the entire crawler-type full-hydraulic tunnel drilling rig in the coal mine tunnel.

2. After the present invention fixes the position of the entire equipment by extending two pairs of first hydraulic cylinders, the positions of the first hydraulic cylinder and the second circular plate are in a fixed state, and then the first servo motor is controlled to drive the driving gear to rotate clockwise. Since the position of the second circular plate will not change, the entire main engine compartment will rotate clockwise with the output shaft of the second servo motor as the axis, and then the crawler drive mechanism can be used to move the entire crawler-type full-hydraulic tunnel drilling rig in any direction. After controlling the second servo motor to drive the first circular plate to rotate 90° clockwise, the drilling assembly can drill holes in the tunnel directly in front of the equipment, and if it is rotated 90° counterclockwise, the drilling assembly can drill holes in the tunnel directly behind the equipment. When the first circular plate does not rotate or rotates 180°, the tunnels on both sides of the equipment can be drilled, which greatly improves the use effect of the entire crawler-type full-hydraulic tunnel drilling rig.

3. When drilling is needed, the present invention first controls the two groups of second hydraulic cylinders to extend synchronously. During the process, the two groups of plug rods first extend partly from the inside of the slots, and the mounting plate moves synchronously in the direction in which the plug rods extend. Subsequently, the mounting plate gradually flips upward with its hinge axis as the axis until the mounting plate and the top plane of the main engine compartment are in a vertical state. Then, the third hydraulic cylinder is controlled to extend to push the first moving plate and the second moving plate to slide downward on the sliding rod until the drill bit is against the tunnel ground. Then, the two groups of fourth hydraulic cylinders are controlled to extend to allow the top ends of the two groups of fourth hydraulic cylinders to rest against the inner top of the tunnel. Through the vertical support of the drill rod and the two groups of fourth hydraulic cylinders, the stability of the entire drilling assembly during the drilling process can be greatly improved. Combined with the two pairs of first hydraulic cylinders fixing the position of the main engine compartment, the stability of the entire crawler-type full-hydraulic tunnel drilling rig during the drilling process can be fully guaranteed. Then, the driving motor is controlled to drive the drill rod to rotate, and the third hydraulic cylinder is controlled to extend slowly and continuously to achieve stable drilling of the entire equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a top view of the present invention when not in operation;

Fig. 2 is a top view of the present invention;

FIG3 is a schematic top view of the present invention after the insertion rod is extended;

FIG4 is a top cross-sectional view of the present invention after the insertion rod is extended;

FIG5 is a top cross-sectional view of the first circular plate of the present invention;

FIG6 is a top view of the first circular plate of the present invention after being disassembled;

FIG7 is a top view of the present invention after both the first circular plate and the second circular plate are disassembled;

FIG8 is a front view of the present invention;

FIG. 9 is a schematic top view of the mounting plate of the present invention.

In the figure: 1. drilling assembly; 101. sliding rod; 102. third hydraulic cylinder; 103. first movable plate; 104. driving motor; 105. fourth hydraulic cylinder; 106. second movable plate; 107. drill rod; 108. drill bit; 2. crawler drive mechanism; 3. first servo motor; 4. first circular plate; 5. connecting plate; 6. mounting plate; 7. first hydraulic cylinder; 8. main engine compartment; 9. supporting pad; 10. driving gear; 11. annular rack; 12. second circular plate; 13. second hydraulic cylinder; 14. insert rod; 15. connecting slide block; 16. reset spring; 17. slot; 18. connecting slide groove; 19. connecting bearing; 20. second servo motor; 21. first roller; 22. second roller.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1 to 9. The present invention provides a technical solution: a ZDY4200LS type crawler-type fully hydraulic tunnel drilling rig for coal mines, including a main engine compartment 8, a crawler drive mechanism 2 is commonly provided at both ends of the main engine compartment 8, a second servo motor 20 is installed at the middle position of the top of the main engine compartment 8, and a connecting bearing 19 is installed at the middle position of the outer side of the output shaft of the second servo motor 20, a second circular plate 12 is installed on the outer side of the connecting bearing 19, four groups of first hydraulic cylinders 7 are evenly installed at the edge position of the top of the second circular plate 12, and the output ends of the four groups of first hydraulic cylinders 7 are all installed with support pads 9, and the outer ring position of the second circular plate 12 An annular rack 11 is installed, a first servo motor 3 is installed at the middle position of the top end of the main engine warehouse 8, and the output shaft of the first servo motor 3 extends to the top of the main engine warehouse 8 and is installed with a driving gear 10 that meshes with the annular rack 11, and a first circular plate 4 is installed at the top of the output shaft of the second servo motor 20, slots 17 are symmetrically opened on both sides of the inside of the first circular plate 4, and plug rods 14 are inserted into the inside of the slots 17, two groups of plug rods 14 extend to the outside of the first circular plate 4 away from one end of the driving gear 10 and are jointly installed with a connecting plate 5, the top of the connecting plate 5 is hinged with a mounting plate 6, and the top of the mounting plate 6 is provided with a drilling assembly 1, the top of the first circular plate 4 is symmetrically hinged with two sides of the connecting plate 5 away from one end of the connecting plate 5, and the tops of the two groups of second hydraulic cylinders 13 are respectively hinged to the middle positions of the two sides of the bottom of the mounting plate 6.

Furthermore, the drilling assembly 1 includes a slide bar 101, a third hydraulic cylinder 102, a first movable plate 103, a drive motor 104, a fourth hydraulic cylinder 105, a second movable plate 106, a drill rod 107 and a drill bit 108. The slide bars 101 are symmetrically mounted on both sides of the top of the mounting plate 6, and the outer sides of the two sets of slide bars 101 are jointly sleeved with the first movable plate 103 and the second movable plate 106. The first movable plate 103 and the second movable plate 106 are fixedly connected, and the first movable plate 103 is away from the middle of one end of the second movable plate 106. A driving motor 104 is installed at the position, and a drill rod 107 is installed at the output end of the driving motor 104, the end of the drill rod 107 away from the first movable plate 103 passes through the second movable plate 106 and is installed with a drill bit 108, third hydraulic cylinders 102 are symmetrically installed on both sides of the mounting plate 6 close to one end of the driving motor 104, and the output ends of the two groups of third hydraulic cylinders 102 pass through the first movable plate 103 and are fixedly connected to the second movable plate 106, and fourth hydraulic cylinders 105 are symmetrically installed at the middle position of both sides of the top of the mounting plate 6.

Furthermore, the output ends of the two groups of fourth hydraulic cylinders 105 are both installed with pads, and the outer sides of the pads are provided with wear-resistant layers, which help to protect the top ends of the fourth hydraulic cylinders 105 from being damaged.

Furthermore, a protection compartment is installed at a middle position of the first movable plate 103 away from one end of the second movable plate 106, and the drive motor 104 is located inside the protection compartment, which helps to protect the drive motor 104 and prevent the drive motor 104 from being damaged by collision.

Furthermore, connecting grooves 18 are symmetrically provided on both sides of the slot 17, and connecting sliders 15 that cooperate with the connecting grooves 18 are symmetrically installed on both sides of the insertion rod 14 away from the connecting plate 5, which helps to limit the extended length of the insertion rod 14 and can also further improve the stability of the insertion rod 14 during the extension and retraction process.

Furthermore, the two sides of the top of the connecting plate 5 are symmetrically provided with limit blocks, and the two sides of the mounting plate 6 near one end of the connecting plate 5 are symmetrically provided with limit slots that cooperate with the limit blocks, which helps to limit the mounting. The maximum rotation angle of the plate 6 is 90°.

Furthermore, a placement groove is provided at one end of the top of the first circular plate 4 away from the connecting plate 5, and a counterweight block is arranged inside the placement groove, which helps to further ensure the stability of the entire device when the mounting plate 6 is flipped upward to a vertical state.

Furthermore, a return spring 16 is installed at one end of the slot 17 away from the connecting plate 5, and the end of the return spring 16 close to the connecting plate 5 is fixedly connected to the insertion rod 14. When the second hydraulic cylinder 13 begins to extend, the insertion rod 14 can be extended from the slot 17 first, and then flipped upward with the mounting plate 6 as the axis.

Furthermore, a first roller 21 is evenly installed at a non-central position of the bottom of the first circular plate 4, and a second roller 22 is evenly installed at a non-central position of the bottom of the second circular plate 12, which can improve the stability of the first circular plate 4 and the second circular plate 12 during rotation and also improve the load-bearing capacity of the first circular plate 4 and the second circular plate 12.

Embodiment 1, as shown in Figures 1 to 6, during actual use, the drilling direction of the drilling component 1 can be freely adjusted according to actual needs. After controlling the second servo motor 20 to drive the first circular plate 4 to rotate 90° clockwise, the drilling component 1 can drill holes in the tunnel directly in front of the device. If it is rotated 90° counterclockwise, the drilling component 1 can drill holes in the tunnel directly behind the device. When the first circular plate 4 does not rotate or rotates 180°, the tunnels on both sides of the device can be drilled. The maximum rotation angles of the first circular plate 4 and the second circular plate 12 are both 360°.

Embodiment 2, as shown in FIG. 1 to FIG. 9, when drilling is required, the two groups of second hydraulic cylinders 13 are first controlled to extend synchronously. During the process, the two groups of plug rods 14 first extend partly from the inside of the slot 17, and the mounting plate 6 moves synchronously following the direction in which the plug rods 14 extend. Then, the mounting plate 6 gradually flips upward with its hinge axis as the axis until the mounting plate 6 and the top plane of the main engine compartment 8 are in a vertical state. Then, the third hydraulic cylinder 102 is controlled to extend, pushing the first movable plate 103 and the second movable plate 106 to slide downward on the slide bar 101 until the drill bit 108 is against the tunnel ground, and then the third hydraulic cylinder 102 is controlled to extend. The two groups of fourth hydraulic cylinders 105 are extended so that the top ends of the two groups of fourth hydraulic cylinders 105 are against the inner top of the tunnel. Through the vertical support of the drill rod 107 and the two groups of fourth hydraulic cylinders 105, the stability of the entire drilling assembly 1 during the drilling process can be greatly improved. Combined with the two pairs of first hydraulic cylinders 7 to fix the position of the main cabin 8, the stability of the entire crawler-type full-hydraulic tunnel drilling rig during the drilling process can be fully guaranteed. Then, the drive motor 104 is controlled to drive the drill rod 107 to rotate, and the third hydraulic cylinder 102 is controlled to continue to extend slowly, so that holes can be drilled in the coal mine tunnel.

Embodiment 3, as shown in FIG. 1 and FIG. 8-9, when it is necessary to drill holes on both sides of the coal mine tunnel, there is no need to control the extension of the second hydraulic cylinder 13, so that the mounting plate 6 is always in a parallel state with the first circular plate 4, and then the top ends of the four groups of first hydraulic cylinders 7 are controlled to rest on both sides of the coal mine tunnel respectively, and then the driving motor 104 is controlled to drive the drill rod 107 to rotate, and then the third hydraulic cylinder 102 is directly controlled to slowly extend, so that the drill bit 108 gradually contacts the inner wall of the coal mine tunnel and starts drilling.

Working principle: before use, connect the device to the power supply, first control the first servo motor 3 through the external control panel to drive the driving gear 10 to rotate counterclockwise, and use the transmission of the driving gear 10 and the annular rack 11 to drive the second circular plate 12 to rotate 90° clockwise, so that the two pairs of first hydraulic cylinders 7 on the second circular plate 12 are respectively located on both sides of the main machine compartment 8, and then control the two pairs of first hydraulic cylinders 7 to extend until the support pads 9 at the top of the two pairs of first hydraulic cylinders 7 are respectively against the inner walls on both sides of the coal mine tunnel. When drilling on the tunnel directly in front of the equipment, control the second servo motor 20 to drive the first circular plate 4 to rotate 90° counterclockwise (as shown in Figure 2), and then control the two groups of second hydraulic cylinders 13 to extend synchronously. During the process, the two groups of rods 14 first extend partly from the inside of the slot 17, and the connecting slide The block 15 slides inside the connecting slide groove 18, the reset spring 16 stretches and releases the elastic potential energy, and the mounting plate 6 moves synchronously with the extension direction of the insertion rod 14 (as shown in FIG3 ), and then the mounting plate 6 gradually flips upward with its hinge axis as the axis until the mounting plate 6 and the top plane of the main engine compartment 8 are in a vertical state, and then the third hydraulic cylinder 102 is controlled to extend, pushing the first movable plate 103 and the second movable plate 106 to slide downward on the slide rod 101 until the drill bit 108 rests on the tunnel ground, and then the two groups of the fourth hydraulic cylinders 105 are controlled to extend, so that the top ends of the two groups of the fourth hydraulic cylinders 105 rest on the inner top of the coal mine tunnel, and then the drive motor 104 is controlled to drive the drill rod 107 to rotate, and the third hydraulic cylinder 102 is controlled to continue to extend slowly to achieve stable drilling of the entire equipment.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

Although embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that It should be understood that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

A ZDY4200LS type crawler-type fully hydraulic tunnel drilling machine for coal mines, comprising a main engine compartment (8), characterized in that: crawler drive mechanisms (2) are commonly provided at both ends of the main engine compartment (8), a second servo motor (20) is installed at the middle position of the top of the main engine compartment (8), and a connecting bearing (19) is installed at the middle position of the outer side of the output shaft of the second servo motor (20), a second circular plate (12) is installed on the outer side of the connecting bearing (19), four groups of first hydraulic cylinders (7) are evenly installed at the edge position of the top of the second circular plate (12), and the output ends of the four groups of first hydraulic cylinders (7) are all installed with support pads (9), an annular rack (11) is installed at the outer ring position of the second circular plate (12), a first servo motor (3) is installed at the middle position of one end of the top of the main engine compartment (8), and the first servo motor (3) is installed at the outer ring position of the second circular plate (12). ) is extended to the top of the main engine compartment (8) and is provided with a driving gear (10) meshing with the annular rack (11); a first circular plate (4) is provided at the top of the output shaft of the second servo motor (20); slots (17) are symmetrically provided on both sides of the interior of the first circular plate (4); and a plug rod (14) is inserted into the interior of the slot (17); two groups of the plug rods (14) extend to the outside of the first circular plate (4) at one end away from the driving gear (10) and are jointly provided with a connecting plate (5); a mounting plate (6) is hinged at the top of the connecting plate (5); a drilling assembly (1) is provided at the top of the mounting plate (6); second hydraulic cylinders (13) are symmetrically hinged at both sides of the top of the first circular plate (4) away from one end of the connecting plate (5); and the tops of the two groups of the second hydraulic cylinders (13) are respectively hinged to the middle positions of the two sides of the bottom of the mounting plate (6).
The ZDY4200LS type crawler-type fully hydraulic tunnel drilling rig for coal mines according to claim 1 is characterized in that: the drilling assembly (1) includes a slide bar (101), a third hydraulic cylinder (102), a first movable plate (103), a drive motor (104), a fourth hydraulic cylinder (105), a second movable plate (106), a drill rod (107) and a drill bit (108), the slide bars (101) are symmetrically installed on both sides of the top of the mounting plate (6), and the outer sides of the two groups of slide bars (101) are jointly sleeved with the first movable plate (103) and the second movable plate (106), the first movable plate (103) and the second movable plate (106) are fixedly connected, and the first movable plate A driving motor (104) is installed at a middle position away from one end of the second movable plate (106) and a drill rod (107) is installed at the output end of the driving motor (104). One end of the drill rod (107) away from the first movable plate (103) passes through the second movable plate (106) and is installed with a drill bit (108). Third hydraulic cylinders (102) are symmetrically installed on both sides of the mounting plate (6) close to one end of the driving motor (104), and the output ends of the two groups of third hydraulic cylinders (102) pass through the first movable plate (103) and are fixedly connected to the second movable plate (106). Fourth hydraulic cylinders (105) are symmetrically installed at the middle positions of both sides of the top of the mounting plate (6).
The ZDY4200LS type crawler type fully hydraulic tunnel drilling rig for coal mines according to claim 2 is characterized in that: the output ends of the two groups of the fourth hydraulic cylinders (105) are both installed with pads, and the outer sides of the pads A wear-resistant layer is provided on the side.
The ZDY4200LS type crawler-type fully hydraulic tunnel drilling rig for coal mines according to claim 2 is characterized in that a protection compartment is installed at a middle position of the first movable plate (103) away from one end of the second movable plate (106), and the drive motor (104) is located inside the protection compartment.
The ZDY4200LS type crawler-type fully hydraulic tunnel drilling rig for coal mines according to claim 1 is characterized in that: connecting grooves (18) are symmetrically provided on both sides of the slot (17), and connecting sliders (15) that cooperate with the connecting grooves (18) are symmetrically installed on the ends of both sides of the insertion rod (14) away from the connecting plate (5).
The ZDY4200LS type crawler-type fully hydraulic tunnel drilling rig for coal mines according to claim 1 is characterized in that: limit blocks are symmetrically installed on both sides of the top of the connecting plate (5), and limit slots that cooperate with the limit blocks are symmetrically opened on both sides of the mounting plate (6) close to one end of the connecting plate (5).
The ZDY4200LS type crawler type fully hydraulic tunnel drilling rig for coal mines according to claim 1 is characterized in that a placement groove is provided at one end of the top of the first circular plate (4) away from the connecting plate (5), and a counterweight block is provided inside the placement groove.
According to the ZDY4200LS type crawler-type fully hydraulic tunnel drilling rig for coal mines as described in claim 1, it is characterized in that a return spring (16) is installed at the end of the slot (17) away from the connecting plate (5), and the end of the return spring (16) close to the connecting plate (5) is fixedly connected to the insertion rod (14).
The ZDY4200LS type crawler-type fully hydraulic tunnel drilling rig for coal mines according to claim 1 is characterized in that: a first roller (21) is evenly installed at a non-center position of the bottom of the first circular plate (4), and a second roller (22) is evenly installed at a non-center position of the bottom of the second circular plate (12).