CN2170373Y

CN2170373Y - Swinging tail beam type hydraulic support for blasting down roof of coal mine

Info

Publication number: CN2170373Y
Application number: CN 93220628
Authority: CN
Inventors: 王永胜; 陈廷祥; 田保炉; 朴树林
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-31
Filing date: 1993-07-31
Publication date: 1994-06-29
Anticipated expiration: 2003-07-31

Abstract

The utility model relates to a support frame, which is composed of a front beam, a telescopic beam, a top beam, a base, an upright post, a shielding beam, a coal caving jack, etc. The utility model is characterized in that an upper and a lower connecting rods are respectively hinged with the shielding beam and the base to form a four connecting rod mechanism to guarantee the stability of the support frame; the upper end of the shielding beam is hinged with the top beam, the lower end is hinged with a coal caving beam, and a top coal caving mechanism is formed from the coal caving beam and the coal cavingjack. The coal caving jack can be used for controlling the angle of the fore-and-aft oscillation of the coal caving beam to adjust the size of a coal caving opening, the operation is convenient and the recovery rate is high. The utility model with the advantages of light weight and convenient installation and transportation can be used as a dual-purpose hydraulic support frame for caving top coal and slice mining.

Description

Swinging tail beam type hydraulic support for blasting down roof of coal mine

The utility model swing tail boom formula caving roof coal hydraulic support is the support apparatus of stope working surface of coal mines, both has been applicable to the top coal caving of high seam, also is applicable to separate zone production.

Prior art discloses the sun-roof caving roof coal hydraulic support of a kind of CN87203207U swing plate, and its shielding apparatus is provided with caving coal window, and the stretching degree of putting the coal window by rocker rotation and plate slidable adjustment realizes top coal caving.But this hydraulic support remains in the some shortcomings part:

1), the support steel using amount is many, Heavy Weight is to transportation under the coal mine, cause certain difficulty by dress, face moving.

2), the caving coal mechanism of this support causes the triangle coal that is dropped into the goaf more, and the top coal forms the stress arch easily above support is put the coal window under the harder situation of top coal, makes the top coal be difficult for emitting, and causes the rate of extraction to reduce.

The present utility model purpose is in order to overcome the deficiencies in the prior art part, to provide a kind of simple in structure, and steel using amount is few, and is in light weight, caving coal that the rate of extraction is high and separate zone production dual-purpose hydraulic support.

The utility model is the hydraulic support that adopts swing tail boom formula caving coal, with playing the quadric chain of stabilization and putting the coal beam, put coal jack etc. in conjunction with constituting swing tail boom caving coal mechanism, is applicable to top coal caving; To put the coal beam and put the coal jack and dismantle, just become the support that is applicable to separate zone production.

Describe composition of the present utility model, connection, architectural feature and the course of work in detail below in conjunction with drawings and Examples.

Fig. 1 is the utility model embodiment one structural representation;

Fig. 2 is utility model embodiment two structural representations;

Fig. 3 is a working state schematic representation before the utility model caving coal;

Fig. 4 is the utility model caving coal schematic diagram;

Fig. 5 has been put working state schematic representation behind the coal of top for the utility model;

Fig. 6 is the structural representation of the utility model as the separate zone production hydraulic support.

Each component part numbers is in the accompanying drawing:

1-front-axle beam 2-extensible canopy 3-front-axle beam jack

4-back timber 5-column 6-caving shield

The last connecting rod 8-of 7-lower link 9-base

10-is put coal beam 11-and is put coal jack 12-scratch board conveyor

13-moves slide jack 14-and moves the frame jack

Have in the accompanying drawing in addition:

15-rib 17-top coal 18-spoil

Swing tail boom formula caving roof coal hydraulic support as shown in Figure 1, 2, comprise front-axle beam (1), extensible canopy (2), front-axle beam jack (3), back timber (4), column (5), base (9), caving shield (6), go up connecting rod (7), lower link (8), caving beam (10), put coal jack (11), move slide jack (13), move frame jack (14) etc., scratch board conveyor (12) is the haulage device of top coal caving.

Extensible canopy (2) can move along front-axle beam (1), front-axle beam jack (3) promotes front-axle beam (1) swing, and back timber (4) supports and is connected on the base (9) by column (5).

The architectural feature of swing tail boom formula caving roof coal hydraulic support:

1, the caving shield of support (6) upper end is hinged with back timber (4), and the lower end is with to put coal beam (10) hinged, by last connecting rod (7) and lower link (8) respectively with caving shield (6) and the hinged quadric chain of forming of base (9), the stability of assurance support.

2, the dimension scale of each connecting rod relation should satisfy in the quadric chain: caving shield (6) is a lemniscate with the movement locus of back timber (4) hinged end A, and this track when support in the mining height scope during lifting, the swing amplitude is not more than 20CM, thereby the distance between back timber (4) and the rib (15) is constant substantially when guaranteeing the support lifting; Caving shield (6) also is lemniscate with the movement locus of the hinged end B of putting coal beam (10), and this track when support in the mining height scope during lifting amplitude of swinging up and down be not more than 15CM, thereby caving shield (6) and the hinged end B of putting coal beam (10) are no more than 15CM to the variable in distance of base plate when guaranteeing the support lifting.

3, coal beam (10) is put by caving shield (6) as shown in Figure 1, 2 in caving coal mechanism, puts the swing tail boom formula caving coal mechanism that coal jack (11) is formed support.It is hinged with caving shield (6) lower end to put coal beam (10) upper end, controls the swing amplitude of putting coal beam (10) by putting coal jack (11), and its amplitude of fluctuation maximum is about 65 °.Guarantee support under different mining height conditions by caving shield (6) and the movement locus of putting coal beam (10) hinged end and the length of putting coal beam (10), the minimum range of upper surface that makes the lower end of putting coal beam (10) and scratch board conveyor (12) is in 20～35CM scope.Thereby when guaranteeing not caving of support coal, put coal beam (10) and can control top coal and spoil well shown in Fig. 3,5, when the caving coal, putting coal beam (10) can swing under the control of putting the coal jack, the size of control coal discharge outlet, as shown in Figure 4.

Support as shown in Figure 4, is put coal beam (10) to work plane direction swing certain angle by putting coal jack (11) control when the caving coal, make the top coal can fall into scratch board conveyor (12) and transported; If bulk top coal falls when blocking coal discharge outlet, promote to put coal beam (10) to the swing of goaf direction by putting coal jack (11), bulk top coal is squeezed will put coal beam (10) after broken again and regain certain angle and continue to put coal; The speed of putting coal speed by put coal beam (10) inwardly the size of pendulum angle control, if put coal speed when slow, will put coal beam (10) and continue inwardly swing, thereby accelerate to put coal speed; If put coal speed when having little time to transport too soon, will put outwards swing of coal beam (10), thereby reduce to put coal speed; When the top coal has soon been put, dwindle coal discharge outlet with putting the outside swing of coal beam (10) gradually, when finding that spoil is gushed out, will put outwards swing of coal beam (10), stop spoil to pour in work plane by the extruding force of putting between coal beam (10) and spoil.

4, as shown in Figure 6, just become common standing shield hydraulic support after the utility model is pulled down and put coal beam (10) and put coal jack (11), can be used for single separate zone production work plane.

The model machine of this support has passed through underground trials, and effect is better, and has following major advantage:

(1), dual-use. Load onto and put the coal beam and put the hydraulic support that the coal jack can be used as the high seam top coal caving, pull down and put the coal beam and put the support that the coal jack can be used as single separate zone production.

(2), support stability is good, and caving shield is combined finely with putting the coal beam, can co-ordination.

(3), caving coal mechanism structure is simple, easy to operate, and can improve the rate of extraction of top-coal caving face.

(4), save steel, in light weight, easy transportation and installation.

Claims

Swing tail boom formula caving roof coal hydraulic support mainly comprises front-axle beam, extensible canopy, back timber, column, base, caving shield and puts the coal beam and put the coal jack, it is characterized in that:

Support put coal mechanism by caving shield, put the coal beam and put the swing type that the coal jack forms and put coal mechanism, the caving shield upper end is hinged with back timber, the lower end is with to put the coal beam hinged, put coal jack one end and put the coal beam hinged, the other end and base or caving shield are hinged, put the size that the swing of coal beam just can be regulated coal discharge outlet by putting the control of coal jack.