CN202645558U - Crawler-type single-head drilling rig coal cutter - Google Patents

Abstract

The utility model discloses a crawler-type single-head drilling rig coal shearer, which comprises a drilling tool assembly, a slag collecting tank assembly, a front frame assembly, a propulsion assembly, a crawler belt walking assembly, a rotary support assembly, and a drilling tool driving assembly. assembly, transport assembly and pump station assembly, the drilling rig shearer is composed of some detachable parts, the middle part is a hydraulic propulsion part propulsion box, the upper part is installed with a drill pipe driving device, and is equipped with a Spindle drive motor reducer, two supporting cylinders on both sides, the lower part is a rotating support assembly, and two adjusting cylinders on both sides, which are used to change the drilling direction and angle of the drill pipe respectively. The bottom is the track assembly, the transport assembly and the slag collection tank assembly. The effective effect is that the drilling diameter is large, the drilling pressure relief efficiency is high, the labor intensity of the workers is low, and the drilling rig has high flexibility; in addition, it can also carry out safe mining of extremely thin coal seams, with good coal quality and low gangue content, improving the overall quality of the mine. benefit and prolong the service life of the mine.

Description

A crawler type single head drilling rig coal mining machine

technical field

The utility model relates to a crawler-type single-head drilling rig coal shearer, which is especially suitable for mining an extremely thin coal seam while releasing the concentrated stress in the coal seam during roadway excavation.

Background technique

Due to the influence of geographical factors, the coal seams in some areas of China have relatively large concentrated stress. When tunneling, it is easy to cause the concentrated stress in the coal seam to protrude, thus threatening the life safety of the operators. Although many structural forms of drilling rigs have been introduced and produced in China, such as hand-held, column-mounted, and frame-supported drilling rigs, the existing drilling rigs are mainly aimed at the problem of coal seam gas outburst, and cannot solve the problem of concentrated stress in the coal seam. The existing drilling rigs all have the problems of small drilling diameter, low drilling efficiency, high labor intensity, and inconvenient movement. In addition, for coal seams containing gas and concentrated stress, in order to ensure the safety of operations, special outburst drilling rigs must be used to drain the gas and release the stress of the coal seam before coal mining, which is time-consuming and labor-intensive, which has a great impact However, there is no corresponding drilling rig in China to mine extremely thin coal seams while releasing the concentrated stress in the coal seam.

From the perspective of the total coal reserves in the country, thin and extremely thin coal seams are widely distributed in my country. More than 80 of the 95 key mining bureaus in the country have thin and extremely thin coal seams, and the national key state-owned coal mines are thinner than extremely thin. Coal seam reserves are 2.529 billion tons. At present, the equipment used for mechanized mining of thin and extremely thin coal seams mainly includes:

1. Thin coal seam drum shearer: mainly divided into bottom-climbing type and riding-sliding type shearer, among which the riding-sliding type shearer is suitable for thin coal seams with a coal seam thickness greater than 0.8 meters, and the bottom-climbing type shearer The body is located in the machine tunnel opened by the drum, and the height of the machine surface is low, which can be used to mine thin coal seams of 0.6 to 0.8 meters; however, the coal loading effect of the climbing bottom shearer is poor and the structure is complicated; this equipment is not suitable for extremely thin coal seams below 0.6 meters. coal seam;

2. Coal plow: its main defects are: the power of the plow is too small, the ability to plow hard coal and soft rock is poor, the operation reliability is low, the equipment slides seriously when the inclination angle is greater than 10°, and the plow itself is faulty There are problems with efficiency and reliability.

The crawler-type single-head drilling rig coal mining machine can realize the continuous mining of unmanned working face, and can be applied to the mining operations of thin and extremely thin coal seams that cannot be mined by traditional coal mining technology, and the equipment adopts the self-propelled design concept, which is flexible and convenient to move.

Contents of the invention

The purpose of the utility model is to provide a crawler-type single-head drilling rig coal mining machine with compact structure, full hydraulic control, reduced labor intensity of workers and high drilling efficiency for the deficiencies in the prior art.

In order to achieve the above purpose, the crawler type single-head drilling rig shearer of the present invention includes a drilling tool assembly, a slag collecting tank assembly, a front frame assembly, a propulsion assembly, a crawler walking assembly, a rotary support assembly, a drill Tool drive assembly, transportation assembly and pumping station assembly, the drill tool assembly includes auger bits, first section drill pipes and intermediate drill pipes connected in sequence, the auger bit is provided with drill helical blades, the first section drill Drill pipe helical blades are arranged on the rod and the middle drill pipe, and the propulsion assembly includes a drive base plate, a propulsion seat connected with the drive base plate, and two supporting oil cylinders are respectively arranged on the left and right sides of the drive base plate, and the two support oil cylinders are installed On the guide plate of the front oil cylinder and the guide plate of the rear oil cylinder, the guide plate of the rear oil cylinder is provided with a support screw connecting the support rod and the support rod, and a plurality of pin holes for changing the angle of the support rod are arranged in the support rod, and the support screw The end of the shaft is hinged with a support seat, and a propulsion oil cylinder is installed on the propulsion seat; the drilling tool assembly is connected with the output shaft of the drilling tool drive assembly, and the drill tool drive assembly is installed on the drive base plate of the propulsion assembly. The front frame assembly is connected to the left side of the drive base plate through bolts, and the drive base plate is connected to the rotation support upper cover of the rotation support assembly through a pin shaft. The rotation support upper cover is connected with a rotation support seat through a rotation support bearing, and the rotation support The seat is fixed on the crawler walking assembly, and the slag collecting tank assembly is connected to the bottom of the transportation part assembly through a pin shaft.

The inside of the first drill pipe and the middle drill pipe are provided with ventilation holes; the outer edge of the spiral blade is provided with a wing protection strip with a T-shaped cross-section; the top of the drill spiral blade is filled with hard alloy piece; two balance oil cylinders are arranged between the drive bottom plate and the upper cover of the rotating support.

Beneficial effect: the utility model integrates the release of stress and the mining of extremely thin coal seams, and is not only suitable for the release of concentrated stress in the coal seam during roadway excavation, but also suitable for the mining of extremely thin coal seams. The drilling tool assembly is composed of the first drill pipe, the middle drill pipe and the drill bit. The outer edge of the helical blade of the first drill pipe and the middle drill pipe adopts a T-shaped wing protection strip to avoid excessive hole expansion during drilling and ensure Hole-forming linearity, all drilling tools are connected by wedge-type quick-connect mechanism that is easy to disassemble and assemble, which not only ensures a certain degree of flexibility in the connection, but also can drill with the undulations of the coal seam, so that only coal is mined and gangue is not mined. It can effectively reduce auxiliary working time and improve work efficiency. The propulsion assembly is responsible for the advancement and retreat of the drill pipe and the fixation of the whole machine through the support cylinder. The support cylinder controls the support plate and the support rod, and the support angle can be changed by adjusting the connection position of the support screw and the support rod. The rotary support seat in the rotary support assembly is installed on the crawler walking assembly. The rotary support upper cover is connected with the drilling tool drive assembly. The rotary support seat and the rotary support upper cover are connected through the rotary support bearing. In the forward direction, the mining of the coal seam can be realized after the stress is released. The drilling rig has a large drilling diameter and high drilling efficiency. It adopts full hydraulic control, which reduces the labor intensity of workers, and adopts a crawler walking device to improve the flexibility of the drilling rig. In addition, it can also carry out safe mining of extremely thin coal seams, and the coal quality is good. , low gangue content, improve the overall benefit of the mine, and prolong the service life of the mine.

Description of drawings

Fig. 1 is the overall structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the propulsion assembly of the present invention.

In the figure: 1-drilling tool assembly, 11-helical drill bit, 12-first section drill pipe, 13-middle drill pipe, 14-drill bit helical blade, 15-drill pipe helical blade, 16-protection strip, 2-slag collection Groove assembly, 3-front frame assembly, 4-propulsion assembly, 41-support cylinder, 42-front cylinder guide plate, 43-drive base plate, 44-support rod, 45-support screw, 46-cylinder seat, 47-propelling cylinder, 48-rear cylinder guide plate, 49-support base, 5-crawler travel assembly, 6-rotation support assembly, 61-rotation support upper cover, 62-rotation support seat, 63-rotation support cylinder, 7-drilling tool drive assembly, 8-transportation department assembly, 9-pumping station assembly.

Detailed ways

An embodiment of the present utility model is further described below in conjunction with accompanying drawing:

As shown in Figure 1, the crawler-type single-head drilling rig shearer is mainly composed of drilling tool assembly 1, slag collection tank assembly 2, front frame assembly 3, propulsion assembly 4, crawler walking assembly 5, and rotating support assembly 6. Drilling tool drive assembly 7, transportation department assembly 8 and pump station assembly 9. The drilling tool assembly 1 includes a helical drill rod 11, a first drill rod 12 and an intermediate drill rod 13 connected in sequence. The auger bit 11 is provided with a drill helical blade 14. Drill pipe helical blades 15 are provided, and the inside of the first section drill pipe 12 and the middle drill pipe 13 are provided with ventilation holes. The top of the drill bit helical blade 14 is filled with carbide sheet. The propulsion assembly 4 includes a drive base plate 43, a propulsion seat 46 connected to the drive base plate 43, two support cylinders 41 are respectively arranged on the left and right sides of the drive base plate 43, and the two support cylinders 41 are installed on the front cylinder guide plate 42 And on the back cylinder guide plate 48, the back cylinder guide plate 48 is provided with the support screw 45 that the support rod 44 links to each other with the support rod 44, and the support rod 44 is provided with a plurality of pin holes for changing the angle of the support rod 44, supporting The end of the lead screw 45 is hinged with a support seat 49, and a propulsion cylinder 47 is installed on the propulsion seat 46; the drilling tool assembly 1 is connected with the output shaft of the drilling tool drive assembly 7, and the drill tool drive assembly 7 is installed On the drive base plate 43 of the propulsion assembly 4, the front frame assembly 3 is connected to the left side of the drive base plate 43 by bolts, and the drive base plate 43 is connected to the rotation support upper cover 61 of the rotation support assembly 6 through a pin shaft, The rotation support upper cover 61 is connected with the rotation support seat 62 through the rotation support bearing, and two balance oil cylinders 63 are arranged between the driving base plate 43 and the rotation support upper cover 61 . The rotating support base 62 is fixed on the crawler belt traveling assembly 5, and the slag collecting tank assembly 2 is connected to the bottom of the transportation part assembly 6 through a pin shaft.

The output shafts of the drilling tool assembly 1 and the drilling tool drive assembly 7 are connected by a wedge-type quick connection mechanism, and ventilation holes are provided inside the middle 12 of the first section and the middle drill pipe 13; the drill pipe drive assembly 7 is installed on the On the drive base plate 43 of the propulsion assembly 4, the front frame assembly 3 is connected to the left side of the drive base plate 43 through bolts, and the monorail crane is used to realize the loading and unloading of drill pipes. Two balance oil cylinders 63 are also arranged between the bottom plate 43 and the rotating support upper cover 61, which are used to balance the vibration generated in the drilling process and protect the rotating support bearings. Two supporting oil cylinders 41 are arranged on the left and right sides of the propulsion assembly 4, Installed on the guide plate of the oil cylinder, the two ends of the support screw 45 are respectively connected with the support rod 44 and the rear cylinder guide plate 48 through the pin shaft. There are many pin holes in the support rod 44 to change its support angle, so as to adapt to the roadway The width of the support seat 49 is installed on the edge of the support rod 44 through the pin shaft, and is used to support the two sides of the roadway, so as to achieve the function of fixing the unit. The propulsion cylinder 47 is installed on the propulsion seat 46, and is fixed with the drive base plate 43 by bolts The rotary support upper cover 61 and the rotary support seat 62 are connected through the rotary support bearing, and the rotary support seat 62 is fixed on the crawler walking assembly; by adjusting the support angle of the support oil cylinder and the support rod 44, the drilling tool assembly 1, push The assembly 4, the drilling tool driving assembly 7 and the rotating support upper cover 61 rotate on the rotating supporting bearing, thereby changing the drilling direction and realizing further coal mining or stress release; Into 6 bottom joints so that the mined coal can be transported out smoothly.

Claims (5)

1. A crawler-type single-head drilling rig shearer, including drilling tool assembly (1), slag collection tank assembly (2), front frame assembly (3), propulsion assembly (4), crawler walking assembly (5), rotary support assembly (6), drilling tool drive assembly (7), transportation department assembly (8) and pumping station assembly (9), characterized in that: the drilling tool assembly (1 ) includes the helical drill bit (11), the first drill pipe (12) and the middle drill pipe (13) connected in sequence, the helical drill bit (11) is provided with the drill helical blade (14), the first drill pipe (12) and the middle The drill pipe (13) is provided with a drill pipe helical blade (15), and the propulsion assembly (4) includes a drive base plate (43), a propulsion seat (46) connected to the drive base plate (43), and a drive base plate ( There are two support cylinders (41) on the left and right sides of 43), and the two support cylinders (41) are installed on the front cylinder guide plate (42) and the rear cylinder guide plate (48), and the rear cylinder guide plate (48) A supporting screw (45) connected to the supporting rod (44) is provided with a plurality of pin holes for changing the angle of the supporting rod (44) in the supporting rod (44), and the supporting screw (45) ) is hinged with a support seat (49), and a propulsion cylinder (47) is installed on the propulsion seat (46); the drill tool assembly (1) is connected with the output shaft of the drill tool drive assembly (7) , the drilling tool drive assembly (7) is installed on the drive base plate (43) of the propulsion assembly (4), the front frame assembly (3) is connected to the left side of the drive base plate (43) by bolts, and the drive base plate ( 43) It is connected to the rotation support upper cover (61) of the rotation support assembly (6) through the pin shaft, and the rotation support upper cover (61) is connected to the rotation support seat (62) through the rotation support bearing, and the rotation support seat (62) It is fixed on the crawler walking assembly (5), and the slag collecting tank assembly (2) is connected to the bottom of the transportation part assembly (6) through a pin shaft. 2. A crawler-type single-head drilling rig coal shearer according to claim 1, characterized in that: said first drill pipe (12) and middle drill pipe (13) are provided with ventilation holes inside. 3. A crawler-type single-head drilling rig coal shearer according to claim 1, characterized in that: the outer edge of the spiral blade (15) is provided with a wing protection strip (16) with a T-shaped cross section. 4. The crawler-type single-head drilling rig coal shearer according to claim 1, characterized in that: the top of the drill bit helical blade (14) is buried with a cemented carbide sheet. 5. A crawler-type single-head drilling rig coal shearer according to claim 1, characterized in that: two balance oil cylinders (63 ).

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