CN103174415B - Coal mining machine with double motor driving traction part - Google Patents

Abstract

The present invention discloses a coal mining machine with a dual-motor driven traction part. The traction part of the coal mining machine includes a fixed box and a traveling box. The fixed box includes a fixed box housing. A first motor, a second motor and a traction reduction box are arranged in the fixed box housing. The first motor and the second motor are respectively connected to a first motor gear shaft and a second motor gear shaft. An intermediate gear shaft is arranged between the first motor gear shaft and the second motor gear shaft. The input shaft of the traction reduction box is connected to the second motor gear shaft. The output shaft of the traction reduction box is connected to the transmission mechanism of the left traveling box through a planetary gear mechanism. The structure of the right traveling box is the same and symmetrical as that of the left traveling box. The present invention adopts a dual-motor synchronous drive mode. The dual motors merge the power through the intermediate gear shaft. The traction force is relatively large, which solves the problem of mechanized mining of steeply inclined coal seams with a working face inclination angle of no more than 60°, improves the mining efficiency of steeply inclined coal seams underground, and ensures safe production conditions.

Description

Coal shearer driven by double motors

technical field

The invention relates to a drum type electric traction coal shearer, in particular to a drum type electric traction coal shearer suitable for mining steeply inclined coal seams in coal mines.

Background technique

Drum-type electric traction shearers are generally used for mining steeply inclined coal seams in coal mines. The existing drum-type electric traction shearer is usually provided with a traction section on both sides of the middle box, and each traction section is provided with a motor, which ensures the normal running of the shearer through the motor drive. However, considering that the geological structure of our country is relatively complex, the mining of steeply inclined coal seams is relatively difficult, the power of the traction part driven by a single motor is insufficient, it is difficult to realize mechanization, the risk factor is large, the mining efficiency is low, and the working environment is harsh. Many steeply inclined coal seams are due to technical reasons Failed to be effectively and safely mined and utilized. The layout of the traction section of the existing drum electric traction shearer is difficult to solve the problem of insufficient traction power in steeply inclined coal seams, and it is difficult to guarantee safe production in steeply inclined coal seams. Therefore, it is necessary to develop a new type of sharply inclined coal seam drum type electric traction shearer.

Contents of the invention

Purpose of the invention: The purpose of the invention is to provide a double-motor-driven traction shearer to solve the problem of insufficient traction power in the existing drum-type electric traction shearer.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A coal shearer driven by double motors, including a left cutting part, a left pulling part, a middle box, a right pulling part and a right cutting part, and the left pulling part and the right pulling part are respectively arranged on both sides of the middle box , the left traction part includes a left fixed box and a left travel box, the right traction part includes a right fixed box and a right travel box, the left cutting part is connected to the left fixed box, and the right cutting part is connected to the right fixed box; the left The fixed box includes a fixed box housing, and the first motor, the second motor and the traction reduction box are arranged in the fixed box housing, and the first motor and the second motor are respectively connected to the gear shaft of the first motor and the gear shaft of the second motor , an intermediate gear shaft is arranged between the first motor gear shaft and the second motor gear shaft, the intermediate gear shafts are respectively connected to the first motor gear shaft and the second motor gear shaft, and the input shaft of the traction reduction box is connected to The second motor gear shaft, the output shaft of the traction reduction box is connected to the walking wheel of the left traveling box through a planetary gear mechanism; the structure of the right fixed box and the left fixed box is identical and symmetrical.

In the present invention, further, a positioning block is provided on a side of the fixed box shell close to the middle box.

In the present invention, further, both the right fixed box and the left cutting part and the right fixed box and the right cutting part are hinged.

In the present invention, further, between the left fixed box and the left traveling box, between the right fixed box and the right traveling box, between the left fixed box and the middle box, and between the right fixed box and the middle box are all hydraulically Nuts and high-strength bolts securely connect.

In the present invention, further, the intermediate gear shaft includes an intermediate transmission shaft, an O-ring 1, a pad, a bearing, a circlip and an O-ring 2 are provided on the intermediate transmission shaft, and an O-ring 2 is provided on the bearing. gear.

Beneficial effects: (1) The dual-motor driven traction section coal shearer proposed by the present invention adopts the dual-motor synchronous drive mode, and the dual motors combine the power through the intermediate gear shaft, and the traction force is relatively large, which solves the problem that the inclination angle of the working face is not greater than 60° The mechanized mining of steeply inclined coal seams can meet the mining needs of underground steeply inclined coal seams, improve the mining efficiency of underground steeply inclined coal seams, and ensure safe production conditions; (2) The traction gearbox is an independent part with a simple and compact structure, which is convenient Installation and disassembly; (3) The invention is driven by an explosion-proof motor, which meets the underground explosion-proof requirements and has high reliability.

Description of drawings

Fig. 1 is the complete machine structural diagram of the coal shearer driven by double motors of the present invention;

Fig. 2 is an exploded view of the left fixed box of the dual-motor-driven traction shearer of the present invention.

Fig. 3 is an exploded view of the intermediate gear shaft of the dual-motor-driven traction shearer of the present invention.

In the figure: 1, left cutting part; 2-1, left fixed box; 2-1-1, fixed box shell; 2-1-2, positioning block; 2-1-3, first motor gear shaft; 2-1-4, intermediate gear shaft; 2-1-4-1, intermediate transmission shaft; 2-1-4-2, O-ring one; 2-1-4-3, pad; 2-1-4 -4, bearing; 2-1-4-5, circlip; 2-1-4-6, gear; 2-1-4-7, O-ring two; 2-1-5, first motor; 2-1-6, the gear shaft of the second motor; 2-1-7, the second motor; 2-1-8, the traction reduction box; 2-1-9, the planetary gear mechanism; 2-2, the left travel box; 3. Middle box; 4-1, Right fixed box; 4-2, Right traveling box; 5, Right cutting part.

Detailed ways:

The present invention will be further explained below in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 3 , the double-motor-driven drawing section coal shearer of the present invention includes a left cutting section 1 , a left drawing section, a middle box 3 , a right drawing section and a right cutting section 5 .

The left traction part and the right traction part are respectively arranged on the left and right sides of the middle box 3, the left traction part comprises a left fixed box 2-1 and a left travel box 2-2, and the right traction part comprises a right fixed box 4-1 And right walk box 4-2. Both the left end of the left fixed box 2-1 and the right end of the left cutting part 1 and the right end of the right fixed box 4-1 and the left end of the right cutting part 5 are hinged. Between the bottom of the left fixed box 2-1 and the upper end of the left traveling box 2-2, between the bottom of the right fixed box 4-1 and the upper end of the right traveling box 4-2, between the right end and the middle of the left fixed box 2-1 Between the left end of case 3 and between the left end of right fixed case 4-1 and the right end of middle case 3 all are fixedly connected by hydraulic nut and high-strength bolt.

The left travel box 2-2 includes a fixed box housing 2-1-1. The fixed box housing 2-1-1 is provided with two positioning blocks 2-1-2 near the right side of the middle box 3, and the positioning blocks play a positioning role when the left traction part, the right fixed box 4-1, and the middle box 3 are connected. . The fixed box housing 2-1-1 is provided with the first motor 2-1-5, the second motor 2-1-7 and the traction reduction box 2-1-8, the first motor 2-1-5 and the second The motors 2-1-7 all adopt explosion-proof motors. The first motor 2-1-5 and the second motor 2-1-7 are respectively connected to the first motor gear shaft 2-1-3 and the second motor gear shaft 2-1-6 by involute splines, in the first An intermediate gear shaft 2-1-4 is arranged in the middle of the motor gear shaft 2-1-3 and the second motor gear shaft 2-1-6. Intermediate gear shaft 2-1-4 comprises intermediate transmission shaft 2-1-4-1, is provided with O-ring-2-1-4-2, pad 2-1 on intermediate transmission shaft 2-1-4-1 -4-3, bearing 2-1-4-4, circlip 2-1-4-5 and O-ring two 2-1-4-7, set gear 2 on bearing 2-1-4-4 -1-4-6, the gears 2-1-4-6 mesh with the gears on the first motor gear shaft 2-1-3 and the second motor gear shaft 2-1-6 respectively, and the intermediate transmission shaft 2-1 -4-1 is respectively connected with the first motor gear shaft 2-1-3 and the second motor gear shaft 2-1-6 through the gear 2-1-4-6 to realize the first motor 2-1-5 and the second The power confluence of motor 2-1-7. The traction reduction box 2-1-8 adopts a detachable independent box structure, the input shaft of the traction reduction box 2-1-8 is connected to the second motor gear shaft 2-1-6, and the traction reduction box 2-1-8 Output shaft connects the walking wheel of left traveling case 2-2 by planetary gear mechanism 2-1-9. The structure of described right traveling case 4-2 and left traveling case 2-2 is identical and symmetrical.

The dual-motor driven traction part coal shearer proposed by the present invention adopts the synchronous drive mode of dual motors, which can increase the traction force. , The second motor 2-1-7 realizes the confluence of power through the first motor gear shaft 2-1-3, the intermediate gear shaft 2-1-4, and the second motor gear shaft 2-1-6, and the power passes through the traction reduction box 2-1-8 and the planetary gear mechanism 2-1-9 are delivered to the traveling wheels of the traveling case 2-2, and through the meshing transmission of the traveling wheels and the pin row, the walking of the shearer along the pin row is realized.

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principles of the present invention. It should be regarded as the protection scope of the present invention.

Claims (3)

1. A double-motor driven traction section coal shearer comprises a left cutting section (1), a left traction section, an intermediate box (3), a right traction section and a right cutting section (5), and the left traction section and The right traction part is respectively arranged on both sides of the middle box (3), the left traction part comprises the left fixed box (2-1) and the left travel box (2-2), and the right traction part comprises the right fixed box (4-1) and The right travel box (4-2), the left cutting part (1) is connected to the left fixed box (2-1), and the right cutting part (5) is connected to the right fixed box (4-1); it is characterized in that : the left fixed box (2-1) comprises a fixed box shell (2-1-1), and the side of the fixed box shell (2-1-1) near the middle box (3) is provided with a positioning block (2-1-2); The first motor (2-1-5), the second motor (2-1-7) and the traction reduction box ( 2-1-8), the first motor (2-1-5) and the second motor (2-1-7) are respectively connected to the first motor gear shaft (2-1-3) and the second motor gear shaft (2-1-6), an intermediate gear shaft (2-1-4) is arranged between the first motor gear shaft (2-1-3) and the second motor gear shaft (2-1-6), so The intermediate gear shaft (2-1-4) is respectively connected with the first motor gear shaft (2-1-3) and the second motor gear shaft (2-1-6), and the traction reduction box (2-1- 8) The input shaft is connected to the second motor gear shaft (2-1-6), and the output shaft of the traction reduction box (2-1-8) is connected to the left traveling box (2-1-8) through the planetary gear mechanism (2-1-9). 2) the walking wheel; the structure of the right fixed box (4-1) and the left fixed box (2-1) is the same and symmetrical; the left fixed box (2-1) and the left walking box (2-2) between, between the right fixed box (4-1) and the right travel box (4-2), between the left fixed box (2-1) and the middle box (3) and between the right fixed box (4-1) and the middle The boxes (3) are fixedly connected by hydraulic nuts and high-strength bolts. 2. A coal shearer driven by a double motor driving traction part according to claim 1, characterized in that: between the right fixed box (4-1) and the left cutting part (1) and the right fixed box (4-1) -1) and the right cutting part (5) are hinged. 3. A coal shearer driven by a double motor according to claim 1, characterized in that: the intermediate gear shaft (2-1-4) includes an intermediate transmission shaft (2-1-4-1), The intermediate transmission shaft (2-1-4-1) is provided with an O-ring (2-1-4-2), a pad (2-1-4-3), a bearing (2-1-4- 4), circlip (2-1-4-5) and O-ring two (2-1-4-7), the bearing (2-1-4-4) is provided with a gear (2-1 -4-6).