Half-suspended thin coal seam mining machine traction unit with crushing device

Abstract

The invention relates to a traction unit of a semi-suspended thin seam coal mining machine with a crushing device, comprising a traction unit housing, a traction motor, a traction unit planetary reducer and a crushing device, the traction motor and the traction unit planetary reducer are arranged side by side in the front part of the traction unit housing, the output shaft of the traction motor is connected to the input end of the traction unit planetary reducer through a gear transmission mechanism, the output end of the traction unit planetary reducer is coaxially connected with a transmission shaft, the transmission shaft and most of the gear transmission mechanism are located in the rear part of the traction unit housing, and the crushing device is installed on the outer side wall of the traction unit housing in the forward direction of the rear part. The invention solves the problem of coal blocking between the machine body and the scraper chute of the coal mining machine by changing the structure type of the traction unit and installing the crushing device.

Description

TECHNICAL FIELD

[0001] The present application relates to a thin seam coal mining machine traction part, which adopts a semi-suspended arrangement type to solve the problem of small coal passing space. BACKGROUND

[0002] The thin seam coal mining machine has a short body and small coal passing space, and large coal or gangue is easily blocked between the body and the scraper conveyor chute, causing coal blocking, thereby causing the traction overload of the coal mining machine, and the machine needs to be stopped for treatment, thus affecting the working efficiency of the coal mining machine. SUMMARY

[0003] The present application aims to provide a semi-suspended thin seam coal mining machine traction part with a crushing device, which solves the problem of coal blocking between the body and the scraper conveyor chute of the coal mining machine by changing the structure type of the traction part and installing the crushing device.

[0004] The main technical scheme of the present application is as follows:

[0005] A semi-suspended thin seam coal mining machine traction part with a crushing device comprises a traction part shell, a traction motor, a traction part planetary reducer, and a crushing device, the traction motor and the traction part planetary reducer are arranged side by side in the front part of the traction part shell, the output shaft of the traction motor is connected to the input end of the traction part planetary reducer through a gear transmission mechanism, the output end of the traction part planetary reducer is coaxially connected to a transmission shaft, the transmission shaft and most of the gear transmission mechanism are located in the rear part of the traction part shell, and the crushing device is installed on the outer side wall above the coal passing space of the traction part shell.

[0006] The gear transmission mechanism comprises a first gear transmission mechanism and a second gear transmission mechanism, the output shaft of the traction motor is connected to the first gear transmission mechanism, the first gear transmission mechanism is connected to the second gear transmission mechanism, the output end gear of the second gear transmission mechanism is connected to the sun gear of the traction part planetary reducer through a spline, the planet carrier of the traction part planetary reducer is connected to the transmission shaft through a spline, a gear shaft extending forward and backward is arranged in the second gear transmission mechanism, the gear shaft is arranged side by side between the traction motor and the traction part planetary reducer, and the first gear transmission mechanism is located behind the traction motor.

[0007] The output end gear of the first gear transmission mechanism is connected to the rear end of the gear shaft through a spline.

[0008] The crushing device is positioned by a plurality of pin shafts and fixed on the traction part shell by a plurality of fastening screws.

[0009] The crushing device comprises a crushing seat, a crushing pick mounting seat, and a crushing pick, the crushing pick is mounted on the crushing pick mounting seat, and the crushing pick mounting seat is directly welded on the crushing seat.

[0010] The breaking seat adopts a flat plate structure, the breaking pick mounting seat is located on the front face of the breaking seat, and the breaking seat pin hole for mounting the pin shaft is arranged on the back face of the breaking seat.

[0011] A plurality of breaking pick mounting seats are fixed on the breaking seat at intervals, and the breaking pick mounting seats are arranged into multiple rows from top to bottom, and the breaking picks of the adjacent two rows are staggered in the left-right direction.

[0012] The breaking pick mounting seats are preferably arranged into two rows, when the front face of the breaking seat is in a vertical plane, the tooth tips of the picks in the two rows are all inclined downward, and the angle between the center line of the upper row of picks and the front face of the breaking seat is larger than the angle between the center line of the lower row of picks and the front face of the breaking seat.

[0013] The angle between the center line of the upper row of picks and the front face of the breaking seat can be in the range of 60°-75°, and the angle between the center line of the lower row of picks and the front face of the breaking seat can be in the range of 45°-65°.

[0014] The present application has the following beneficial effects:

[0015] The present application sets the traction part of the coal mining machine into a "semi-suspended" structure, i.e. the large traction motor and the traction part planetary reducer are arranged in the front part of the traction part shell, so that they are not located above the scraper conveyor chute but on the coal wall side of the scraper conveyor chute, only the small transmission shaft and most of the gear transmission mechanism are located above the scraper conveyor chute, which can greatly reduce the up-down thickness of the part of the traction part shell above the scraper conveyor chute, increase the coal passing space, and greatly solve the coal blocking problem between the coal mining machine body and the scraper conveyor chute and the traction overload problem caused thereby.

[0016] The present application installs the breaking device on the outer wall of the traction front direction of the rear part of the traction part shell, so that it is located on the coal mining machine body above the coal passing channel, when large pieces of coal or gangue pass, the breaking device can first break them into small pieces, and then pass through the lower part of the machine body, thus increasing the smoothness of coal and gangue passing. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a top view structure schematic diagram of an embodiment of the traction part of the present application;

[0018] Figure 2 It is a top view schematic diagram of the relative position relationship between the left traction part and the scraper conveyor of the present application;

[0019] Figure 3 It is a front view schematic diagram of the left traction part of the present application;

[0020] Figure 4Fig. 1 is a left view of the left traction part of the present application;

[0021] Figure 5 Fig. 4 is a side view of one embodiment of the crushing device;

[0022] Figure 6 Fig. 5 is a top view of one embodiment of the crushing device.

[0023] BRIEF DESCRIPTION OF DRAWINGS: 1. Shearer boom; 2. Large lump coal or gangue; 3. Crushing device; 3-1. Pin shaft; 3-2. Fastening screw; 3-3. Crushing seat; 3-4. Crushing pick mounting seat; 3-5. Crushing pick; 4. Traction part housing; 5. Traction part planetary reducer; 6. Transmission shaft; 7. Traction motor; 8. Gear transmission mechanism; 9. Coal passing space; 10. Scraper. DETAILED DESCRIPTION

[0024] As Figures 1-6 shown in the drawings, the present application discloses a semi-suspended thin coal seam shearer traction part (which can be simply referred to as traction part) with a crushing device, which comprises a traction part housing 4, a traction motor 7, a traction part planetary reducer 5 and a crushing device 3. The traction motor and the traction part planetary reducer are arranged side by side in the front part of the traction part housing, the output shaft of the traction motor is connected to the input end of the traction part planetary reducer through a gear transmission mechanism 8, and the output end of the traction part planetary reducer is coaxially transmission connected with a transmission shaft 6. The power output by the traction motor is transmitted to the walking part of the shearer in turn through the gear transmission mechanism, the traction part planetary reducer and the transmission shaft, and drives the shearer to walk along the coal wall. The transmission shaft and most of the gear transmission mechanism are located in the rear part of the traction part housing, i.e. behind the traction motor and the traction part planetary reducer.

[0025] During coal mining, the scraper 10 is laid in a straight line along the extension direction of the coal wall, and the traction part of the shearer, as an important component of the shearer body, is straddled above the scraper. Since the relatively large traction motor and the traction part planetary reducer are arranged in the front part of the traction part housing, they are no longer located above the scraper chute but on the coal wall side of the scraper chute relative to the scraper, only leaving the relatively small transmission shaft and most of the gear transmission mechanism located above the scraper chute, which can greatly reduce the up-down thickness of the part of the traction part housing located above the scraper chute and increase the coal passing space 9, thereby greatly solving the problem of coal blocking between the shearer body and the scraper chute and the problem of traction overload of the shearer caused thereby. In this paper, the structural feature that the rear part of the traction part is located directly above the scraper chute and the front part of the traction part is forwardly overhanging on the coal wall side outside the scraper chute is referred to as "semi-suspended".

[0026] The crushing device is installed on the outer side wall above the coal passing space of the traction part shell. For the left traction part, the crushing device is installed on the left side, and for the right traction part, the crushing device is installed on the right side, that is, the crushing device of the left traction part is installed on the outer side wall of the left end of the rear part of the left traction part shell, and the crushing device of the right traction part is installed on the outer side wall of the right end of the rear part of the right traction part shell. When large pieces of coal or gangue 2 pass through, they can be first crushed into small pieces by the crushing device, and then pass through the lower part of the machine body, thereby increasing the smoothness of the coal and gangue passing.

[0027] In the front-rear direction, the crushing device is located at the rear part of the traction part shell, and the outer side wall of the front part of the traction part shell is provided with a rocker arm mounting seat for hinged connection with the corresponding side coal mining machine rocker arm 1.

[0028] The gear transmission mechanism can include a first gear transmission mechanism and a second gear transmission mechanism, the output shaft of the traction motor is in transmission connection with the first gear transmission mechanism, the first gear transmission mechanism is in transmission connection with the second gear transmission mechanism, the output end gear of the second gear transmission mechanism is in spline connection with the sun gear of the traction part planetary reducer, i.e. the input end of the planetary reducer, and the planetary carrier of the traction part planetary reducer, i.e. the output end of the planetary reducer, is in spline connection with the transmission shaft. The second gear transmission mechanism is provided with a front-rear extending gear shaft, which is arranged side by side between the traction motor and the traction part planetary reducer, and the first gear transmission mechanism is located at the rear of the traction motor. By transmitting power to the second gear transmission mechanism, the traction power is transmitted from the rear to the front in the traction part shell.

[0029] The output end gear of the first gear transmission mechanism is in spline connection with the rear end of the gear shaft. The gear part at the front end of the gear shaft is in external meshing with the output end gear of the second gear transmission mechanism.

[0030] The crushing device is positioned by a plurality of pin shafts 3-1 and fixed on the traction part shell by a plurality of fastening screws 3-2.

[0031] The crushing device includes a crushing seat 3-3, a crushing pick mounting seat 3-4, and a crushing pick 3-5, the crushing pick is mounted on the crushing pick mounting seat, and the crushing pick mounting seat is directly welded on the crushing seat.

[0032] The crushing seat adopts a flat plate structure, the crushing pick mounting seat is located on the front face of the crushing seat, and the crushing seat pin hole for mounting the pin shaft is arranged on the back face of the crushing seat.

[0033] A plurality of crushing pick mounting seats are fixed on the crushing seat in intervals, and the crushing pick mounting seats are arranged in multiple rows from top to bottom, and the crushing picks of adjacent two rows are staggered in left and right directions, that is, there is no crushing pick vertically upward, so that the installation space of the crushing pick mounting seat is saved, and a crushing area with larger area is covered, and the crushing area of the large lump coal or gangue is increased.

[0034] In the embodiment shown in the drawings, the crushing pick mounting seats are arranged in two rows, when the front surface of the crushing seat is in a vertical plane, the tooth tips of the picks in the two rows are all inclined downward, and the angle between the center line of the upper row of picks and the front surface of the crushing seat is larger than the angle between the center line of the lower row of picks and the front surface of the crushing seat. The picks in the upper row mainly play a role of pre-crushing, that is, crushing the large lump coal or gangue into larger volume blocks, and the picks in the lower row play a role of final crushing, that is, further crushing the larger volume blocks formed by pre-crushing, and finally achieving the purpose of making the crushed coal or gangue smoothly pass through the lower part of the machine body.

[0035] Further, the angle between the center line of the upper row of picks and the front surface of the crushing seat is in the range of 60°-75°, and the angle between the center line of the lower row of picks and the front surface of the crushing seat is in the range of 45°-65°.

[0036] The front and back referred to herein respectively refer to the direction pointing to and away from the coal wall in the coal cutting state of the coal mining machine.

Claims

1. A traction unit of a semi-suspended thin seam coal mining machine with a crushing device, characterized in that: The traction part shell, traction motor, traction part planetary reducer and crushing device are arranged side by side in the front part of the traction part shell, the output shaft of the traction motor is connected to the input end of the traction part planetary reducer through a gear transmission mechanism, the output end of the traction part planetary reducer is coaxially connected with a transmission shaft, the transmission shaft and most of the gear transmission mechanism are located in the rear part of the traction part shell, the crushing device is installed on the outer side wall above the coal passing space of the traction part shell, the crushing device comprises a crushing seat, a crushing pick mounting seat and a crushing pick, the crushing pick is mounted on the crushing pick mounting seat, the crushing pick mounting seat is directly welded on the crushing seat, the crushing seat adopts a flat plate structure, the crushing pick mounting seat is located on the front surface of the crushing seat, the crushing seat pin hole for mounting the pin shaft is arranged on the back surface of the crushing seat, a plurality of crushing pick mounting seats are fixed on the crushing seat at intervals, the crushing pick mounting seats are arranged in two rows from top to bottom, the adjacent two rows of crushing picks are staggered in the left-right direction, when the front surface of the crushing seat is in the vertical plane, the tooth tips of the upper and lower rows of picks are inclined downward, and the center line of the upper row of picks and the front surface of the crushing seat form an angle in the range of 60°-75°, and the center line of the lower row of picks and the front surface of the crushing seat form an angle in the range of 45°-65°.

2. A tractor for a semi-suspender thin-seam shearer with a crushing device according to claim 1, characterized in that: The gear transmission mechanism comprises a first gear transmission mechanism and a second gear transmission mechanism, the output shaft of the traction motor is connected with the first gear transmission mechanism, the first gear transmission mechanism is connected with the second gear transmission mechanism, the output end gear of the second gear transmission mechanism is connected with the sun gear of the traction part planetary reducer, the planetary carrier of the traction part planetary reducer is connected with the transmission shaft, the gear shaft is arranged in front and back in the second gear transmission mechanism, the gear shaft is arranged side by side between the traction motor and the traction part planetary reducer, and the first gear transmission mechanism is located behind the traction motor.

3. A tractor for a semi-suspender thin-seam miner with a crushing device according to claim 2, characterized in that: The output end gear of the first gear transmission mechanism is connected with the rear end of the gear shaft through a spline.

4. A haulage unit for a semi-suspender thin-seam miner with a crushing device according to claim 1, 2 or 3, characterized in that: The crushing device is positioned by a plurality of pin shafts and fixed on the traction part shell by a plurality of fastening screws.

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