JPS5858519B2 - Boom type cutting machine for steep slope coal mining - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a boom-type cutting machine for excavating steeply sloping coal seams.

During steep slope cutting, especially when mining coal at a steep slope close to 90 degrees, for example, about 700 degrees, conventionally, coal mining is carried out using a monoxide vinyl trough as a false slope blowing method with an angle of repose of approximately 300 degrees. Transport coal and pay -100
It is common to provide 5 to 15 notches at a distance of about 150 m to 150 m, and to extract coal by coal picks, drills, blasting, etc., at two degrees of depth in each of the notches.

However, in the case of the conventional steep-slope coal mining, scaffolding is erected on horizontally installed columns and most of the work is done manually, which makes it difficult to improve efficiency and poses security problems.

The object of the present invention is to provide a boom-type cutting machine for steep slope coal mining which can advantageously solve the above-mentioned problems.

Next, the present invention will be explained in detail using illustrated examples.

Figures 1 and 1 show a boom-type cutting machine employing a steep slope according to an embodiment of the present invention and a state in which steep slope coal mining is performed using this cutting machine.・The true slope of the coal seam 15 sandwiched in the lower plate 2 is 700, and the bottom surface 16 is formed by filling the coal seam with a false slope βξ300 on the mining site, and the bottom surface 16 is covered with vinyl chloride. A manufactured trough 11 is installed.

A large number of top plate side cuts 18 are brought into contact with the steeply inclined top plate 1 at intervals in the excavation direction, and the steeply inclined lower plate 2 has a lower plate side cuppe 19 opposite to each top plate side cuppe 18. touched,
A hydraulic upper telescopic strut 20 is interposed between the upper ends of each of the opposing cutlets 18 and 19, and each cutter 18 and 19 has a strong crimping force that can support the weight of the cutting machine at a position approximately 1/3 from the lower end. Hydraulic intermediate telescopic column 2 with a square cross section
1 is interposed.

A hydraulic front lower telescopic strut 4 and a hydraulic rear lower telescopic strut 7 [button The outer columns 24 and 25 are fitted so that they can be moved by an appropriate distance (for example, about 20 cm) in the longitudinal direction of the columns, and are opposed to a locking flange provided at the proximal end of the outer columns 24°250. Between the mounting members 22 and 23, a two-split band-type outer column fixing spacer 54 is removably fitted to the outer column 24 and 25, and the telescopic column 4
, 7, a stopper 55 is attached to the mounting member 22, 23 on the intermediate side.
The 0 base end is pivotally mounted.

The outer column 26 button of the hydraulic front upper telescopic strut 5 and the outer column 27 of the hydraulic rear upper telescopic strut 8 are slidably fitted into a plurality of mounting brackets 33 and 33', respectively, and the buttons on the front lower telescopic strut 4 are slidably inserted. The lower ends of the front hydraulic cylinders 6 are rotatably connected to both sides of the outer column 24 in the longitudinal direction, the upper ends of the front hydraulic cylinders 6 are coupled to the mounting brackets 33, and the rear lower The lower end of the rear hydraulic cylinder IJy cylinder 9 is rotatably connected to both longitudinal sides of the outer column 25 that is attached to the telescopic column 4, and the upper end of the rear hydraulic cylinder 9 is connected to the mounting bracket 33'. The bins are combined.

The mounting brackets 33, 33' facing each other in the longitudinal direction are connected via an upper connecting member 10 whose length is adjustable, and this upper connecting member 10 includes a number of bolts provided at intervals in the longitudinal direction. Both ends of a plurality of relocation hydraulic cylinders 110 are constructed of a plurality of strip plates 28, 29 having holes and bolts 30 that connect the strip plates 28, 29, and are arranged at intervals in the longitudinal direction of the column. , front upper telescopic column 5
The mounting member 23 supporting the rear lower telescopic column 7 is connected to the mounting fittings 33 attached to the mounting bracket 33 and the mounting member 23 supporting the rear lower telescopic column 7.

Front upper telescopic column 5 button and rear upper telescopic column 8 outer column 2
A spacer 54' for fixing the outer column as described above is removably fitted to the base end of the outer column 6, 27, and a stopper 55' is also attached to the mounting bracket 33, 33' on the distal end side of the outer column 26, 27. The base end of the skid 3 is pivotally attached to the skid 3, and a nower unit 31 is fixed to the skid 3 for supplying pressure fluid to each of the telescopic struts and the hydraulic cylinder.

Each telescopic support 4, 5, 7, 8 is on the upper panel 1': J? and lower board 2
A crimping plate 32 extending in a direction perpendicular to the zero plane and having an uneven surface for preventing slipping is attached to both ends of each telescoping column.
Furthermore, a front hydraulic cylinder 6, a rear hydraulic cylinder 9. Upper connecting member 10. Both ends of the relocation hydraulic cylinder 110 can rotate within a plane perpendicular to the longitudinal direction of the support with respect to the mounting bracket 33 fixed to the mounting member 22, 23 housing or the outer pillar of the upper telescopic support 5, 8. The bins are combined like this.

The side skid 34 to be supported by the lower plate side cuppe 19 is connected to the side of the skid 3 via a link 56, and the skid 3 and the link 56 are connected via a hydraulic cylinder 57 for moving the side skid. and the lower telescopic struts 4, 7 and side skids 34. A movable support frame 12 is constituted by the skid 3 supporting the power unit 31, the upper telescopic columns 5 and 8 connected by each hydraulic cylinder 6.9 and the upper connecting member 10, and the relocation hydraulic cylinder 11. There is.

The proximal outer cylinder 35 and the distal inner cylinder 36 slidably fitted therein are connected by a telescoping hydraulic cylinder 3T to constitute a telescoping cutter poom 14.
4 has a telescopic stroke larger than the cutlet spacing,
A cutter head 13 is attached to the tip of the cutter boom 14 and is rotated by a drive device that has a large number of holes around the circumference and is a water-cooled electric motor built into the cutter boom 14. The cooling water is jetted out from the tip of the cutter head 13 and is used for dust prevention.

A support tube 39 to which the binion 38 is fixed is rotatably fitted into the mounting member 22 or the outer column 24 of the skid 3 while being arranged concentrically with the outer column 24 of the front lower telescopic column 4. , the rack 4 meshing with the pinion 38
0 is attached to the skid 3 so as to be slidable back and forth, and furthermore, the rack 40 and the skid 3 are connected via a vertical swing hydraulic cylinder 41, and a bracket 42 fixed to the base end of the cutter boom 14 is The tip of the outer cylinder 35, which is pivotally attached to the support cylinder 36 by a pin 43 and rests on the cutter boom 14, and the bracket 44 fixed to the support cylinder 39 are connected via a left-right swing hydraulic cylinder 45. has been done.

When digging a steep slope with a cutting machine configured as described above, as shown in FIGS. 5 and 6, the skid 3 is raised from the intermediate telescopic column 21, and the side skid 34 is moved from the lower plate. While floating from the side cup 19, extend each telescopic column 4, 5, 7.8 and remove the upper panel 1.
By crimping the button and the lower plate 2, the movable support frame 12 of the cutting machine is fixed to the lower plate 1 button and the upper plate 2, and in this state, the cutter head 13 is rotated and the cutter is removed.

- By appropriately swinging the boom 14 vertically and horizontally and gradually extending the cutter boom 14, coal is mined from the steeply sloping coal seam 15 and the mined coal is supplied into the trough 1T. Sliding transport.

In this case, since the skid 3 button and the side skid 34 are separated from the intermediate telescoping column 21 button and the lower plate side cup 19, the column 21 button, cup 19, etc. will not loosen due to vibrations caused by excavation.

After mining coal in a section corresponding to one pitch of the cutter with the movable support frame 12 fixed, the cutter boom 14 is shortened and the stone bars attached to the front upper telescopic strut 5 and the rear upper telescopic strut 8 are installed in advance. 55' with its tip end close to the inner column, each upper telescopic column 5, 8
After pulling the inner column 46° 41 into the outer column 26.2T, insert the spacer 54 attached to each upper telescopic column 5, 8.
', and then by shortening each of the upper telescopic columns 5, 8, the outer columns 26, 27 are moved in a direction away from the lower plate 2 by a distance slightly larger than the thickness of the cutlet 19, for example, about 20 cm, Each upper telescopic column 5゜8 is cut 18,
Make it possible to dodge 19.

Next, the relocation hydraulic cylinder 11 is extended to move each upper telescopic column 5, 8 forward from position A to position 1 in Figure 8, and then each upper telescopic column 5, 8 is extended and moved upward. The inner columns 48, 49 are fixed to the panel 1 button and the lower panel 2 by pressing, and then, with the stopper 55 tilted down in advance to a position where its tip is close to the inner column, each lower telescopic column 4°7 [1- outer pillar 24,
After pulling it into 2S, remove the spacer 54,
Subsequently, by shortening each of the lower telescopic columns 4, 7, the outer columns 24, 25 are moved in a direction away from the lower plate 2 by a distance slightly greater than the thickness of the cutlet 19, and each of the lower telescopic columns 4, 7 is shortened. to be able to dodge Katsupe 18 and 19.

Next, by shortening the relocation hydraulic cylinder 11, each upper telescoping strut 5, 8 corresponds to each lower telescoping strut 4, 7.
Each of the lower telescopic struts 4, 7 and the skid 3, as well as each member supported thereby, is moved forward until the relative position of After extending and crimping and fixing to the upper plate 1 and the lower plate 2, each upper telescopic column 5, 8 is moved forward to the position A in Fig. 8 and crimped and fixed in the same manner as in the above case, and one cycle is completed. end.

Direction correction and vertical alignment when relocating a cutting machine.

Operations such as creating a slight gap between the skid 3 and the intermediate telescopic column 21 during excavation are performed by the telescopic movements of the two front hydraulic cylinders 6 and the two rear hydraulic cylinders 9.

Further, the vertical direction of the movable support frame 12 is adjusted by adjusting the length of the upper connecting member 10 so that it becomes slightly longer or slightly shorter than the interval between the lower telescopic columns 4.7.

If a hydraulic cylinder is used as the upper connecting member 10, the vertical direction of the movable support frame 12 can be adjusted more easily and quickly.

When the relocation hydraulic cylinder 11 is extended or shortened from the position where each upper telescopic strut 5, 8 is in the position shown in Fig. 8, the position of each upper telescopic strut 5, 8 is lowered, so the front upper telescopic strut 5 may collide with the cutter boom 14, the front hydraulic cylinder 6 and the rear hydraulic cylinder 9 may be extended at the same time as the relocation hydraulic cylinder 11 is extended or shortened.

■After completing the cycle of excavation, immediately install cutlets 18 and 19 on the upper plate 1 button and lower plate 2 of the excavated area, and remove the intermediate telescopic support 21' below the excavated area. Then, it is hoisted by a chain block 50, and the intermediate telescopic column 21' is interposed at a position about 1/3 of the height from the lower end of the cutlets 18, 19 at the end of excavation and fixed by pressure.

When pulling back the cutting machine after one round of coal mining, shorten each of the lower telescopic columns 4 and 7, and then close the front hydraulic cylinder 6.
After extending the rear hydraulic cylinder 9 and the relocation hydraulic cylinder 11, the skid 3 is placed on the intermediate telescoping column 21, and then each upper telescoping column 5, 8 is shortened, and then the relocation hydraulic cylinder 11 is extended. By shortening, each upper telescopic column 5°8 is lowered to the lowest position, that is, position 1 of D in FIG. 8, and then, as shown in FIG. The coal is pulled up and moved to be stored in a staple 53 formed with a cut in the shoulder, and then the next coal mining is carried out.

According to this invention, the four telescopic columns 4, which are applied to the cutting machine,
5 and 7.8 and press them against the steeply inclined upper plate 1 button and lower plate 2, the movable support frame 12 that is attached to the cutting machine can be kept in a stable state relative to the upper plate 1 button and lower plate 2. It can be firmly fixed, and the upper panel 1 button and lower panel 2 near the cutting machine installation part are supported by the above-mentioned four telescopic columns that are attached to the cutting machine in addition to the usual support by the column buttons and cutlets. Therefore, safety and reliability are excellent, and the lower telescopic column 4,
By appropriately combining the expansion and contraction of 7, the expansion and contraction of the upper telescoping columns 5 and 8, and the expansion and contraction of the relocation hydraulic cylinder 11,
In order to easily relocate the cutting machine while supporting it with the upper plate 1 and lower plate 2, cutting can be carried out by extending or shortening the front hydraulic cylinder 6 and rear hydraulic cylinder 9 as appropriate. Correcting the vertical direction of the machine, straightening it, and seating it on the support.

Effects such as being able to easily carry out operations such as lifting from the support can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing a cutting machine of the present invention, a support button, and a cutlet viewed diagonally from below, and FIG. 3 is a partially cutaway perspective view showing the state seen from the side; FIG. 3 is a longitudinal sectional front view showing the vicinity of the front telescopic column and cutter poom in the cutting machine of the present invention; FIG. 4 is a front view showing the support structure of the side skid;
Fig. 5 is a longitudinal side view showing the state in which a steeply inclined coal seam is being cut by the cutting machine of the present invention, and Fig. 6 shows the state in Fig.
-A view seen from the direction of the X-ray arrow, Figure 7 is the state shown in Figure 5.
- Figure 8, viewed from the Y line arrow direction, shows the location where the cutting machine has been relocated.
a schematic side view showing the position of the upper telescoping strut when pulling back;
FIG. 9 is a schematic side view showing a state in which the cutting machine is pulled back. The buttons in the figure are: 1 is the upper panel, 2 is the lower panel, 3 is the skid, 4 is the front lower telescopic column, 5 is the front upper telescopic column, 6 is the front hydraulic cylinder, I is the rear lower telescopic column, 8 is the 9 is a rear hydraulic cylinder; 10 is an upper connecting member; 1
1 is a hydraulic cylinder for relocation, 12 is a movable support frame, 13 is a rotary cutter head, 14 is a cutter boom, 15 is a coal seam,
Reference numeral 18 indicates a top plate side cutter, 19 indicates a lower plate side cutter, 21 indicates a hydraulic intermediate telescopic column, 32 indicates a crimping plate, 34 indicates a side skid, 37 indicates an extendable hydraulic cylinder, 51 indicates a shoulder shaft, and 52 indicates a winch. .

Claims (1)

[Claims] 1. A front lower telescopic column 4 is attached to the front part of the skid 3, which is installed on a column interposed between the steeply sloping upper panel 1 and lower panel 2, and the front lower telescopic column 4 and its upper part are The front upper telescopic strut 5 disposed at are connected via the rear hydraulic cylinder 9, and the front upper telescopic strut 5 and the rear upper telescopic strut 8 are connected via the upper connecting member 10, and the vicinity of one of the upper telescopic struts in the front-rear direction and the front-back direction A cutter boom 140 is connected to the vicinity of the other lower telescopic column via a relocation hydraulic cylinder 11 to form a movable support frame 12, and the movable support frame 12 has a cutter boom 140 equipped with a rotary cutter head 13 at its tip. A boom-type cutting machine for steeply inclined coal mining, characterized in that the base is mounted so that it can swing vertically and horizontally.