CN102704976B - A kind of combining puts filling coal mining hydraulic support - Google Patents

Abstract

A hydraulic support for fully mechanized caving and filling coal mining, mainly composed of a side guard, a front probe beam, a front roof beam, a middle roof beam, a rear roof beam, a front column, a center column, a rear column, a four-bar linkage mechanism, and a filling mining conveyor , Adjusting jack and base. The rear end of the middle roof beam is hinged with a rear roof beam that can put coal. The bottom of the middle roof beam and the rear roof beam is provided with a track for the filling and mining conveyor to slide back and forth. The push-pull oil cylinder for raising or lowering; the rear top beam includes a box body, and the box body is provided with a matching drawer box, and a hydraulic cylinder connected to the inner side of the box body is symmetrically arranged in the box body, and a puller box is provided on the box body There is a coal discharger on the drawing board, and a pushing board is provided on the front end of the rear roof beam. This equipment can not only support the fully mechanized caving mining face, but also realize the normal coal discharge of the support and the complete filling of the goaf, and the coal discharge and filling do not affect each other. The stent has simple structure, strong adaptability and operability, good filling effect and wide practicability.

Description

A fully mechanized caving filling coal mining hydraulic support

technical field

The invention relates to a hydraulic support for fully mechanized caving and filling coal mining, which is especially suitable for a hydraulic support for comprehensive mechanized top coal caving and filling of coal mining working faces for supporting, coal mining, coal caving and filling at the same time.

technical background

The rapid development of China's economy requires rapid growth of coal production. my country's thick coal seam reserves are very rich, and the recoverable reserves account for 45% of the total reserves of production mines. The production mines with thick coal seams account for 40.6% of the total number of production mines in the country, and they are widely distributed.

In order to solve the problem of "three under" coal pressure, my country has adopted various technical measures such as traditional strip mining, relocation of villages, and filling mining to liberate "three under" coal pressure and increase the coal recovery rate. In recent years, fully mechanized mining and filling technology has developed rapidly, and the application of fully mechanized mining and filling hydraulic supports has greatly improved the level of coal mining technology. In the process of fully mechanized mining and filling, we found that many coal mines have thicker coal seams in the "three lower" coal mines. Due to the limitation of the height of fully mechanized mining and filling, layered mining has to be used. The traditional fully mechanized mining and filling hydraulic support cannot be used normally, which greatly How to realize comprehensive mechanized top-coal caving and filling mining simply, quickly and efficiently is a big problem. Therefore, it is one of the keys to realize this technology to develop a support that can maintain the space safety of the coal mining face at the mining face and can realize caving mining and goaf filling.

Contents of the invention

Technical problem: The purpose of this invention is to overcome the deficiencies in the prior art and provide a fully mechanized caving filling coal mining hydraulic support with simple structure, easy operation, high filling efficiency and strong roof control ability.

Technical solution: In order to achieve the above purpose, the fully mechanized caving and filling coal mining hydraulic support of the present invention includes a front roof beam, a front probe beam arranged at the front of the front roof beam, a side guard connected to the front probe beam, and a front beam under the front roof beam. It is equipped with a front column, a middle column and a four-bar linkage mechanism. The rear end of the front roof beam is provided with a middle roof beam and a rear column vertically erected between the base and the middle roof beam. A filling and mining conveyor is suspended below the middle roof beam. An adjustment jack for adjusting the pushing device up and down is fixed on the base below the beam.

The rear end of the middle roof beam is hinged with a rear roof beam that can put coal, and the bottom end of the middle roof beam and the rear roof beam is provided with a track for the filling and mining conveyor to slide back and forth, and a rear roof beam is provided between the middle roof beam and the rear roof beam. The push-pull cylinder for lifting or lowering the top beam.

The rear roof beam includes a box body, and a drawer box matched with it is arranged in the box body, and a hydraulic cylinder connected with the inner side of the box body is arranged symmetrically in the box body, and a drawer plate is provided on the box body, and the drawer box A coal discharge device is arranged on the board, and a pushing plate is arranged at the front end of the rear roof beam.

Beneficial effects: fully mechanized caving and filling coal mining hydraulic support can not only maintain the working space of normal coal mining in the working face, but also realize coal mining in front of the working face, coal discharge in the rear and complete filling of the goaf, while pressing the filling body Reality. The main advantages are:

1. Due to the three roof beam structure of the front roof beam, the middle roof beam and the rear roof beam, it bears the pressure of the roof and controls the sinking of the roof before filling.

2. The rear end of the middle roof beam is hinged with a rear roof beam that can put coal. The rear roof beam includes a box body. There is a drawer plate on the box body. There is a push-pull oil cylinder for lifting or lowering the rear roof beam. That is to say, it is possible to realize coal discharge at the middle position by pulling the pull plate through the coal discharge device, and it is also possible to realize low position coal discharge after the top beam is lowered.

3. There is a pull-out box in the box, which is symmetrically equipped with a hydraulic cylinder connected to the inside of the box. At the same time, the front end of the rear roof beam is equipped with a push plate. Realize the dense filling of different heights of coal mining space and coal discharge space in the goaf.

4. The bottom of the middle roof beam and the rear roof beam is equipped with a track for the back and forth sliding of the filling and mining conveyor, which allows the filling and mining conveyor to slide back and forth along the track, so that the filling material can be filled at different positions without affecting the lifting of the rear roof beam. up or down.

Description of drawings

Fig. 1 is a schematic front view of the structure of the present invention;

Fig. 2 is a schematic front view of the rear roof beam structure of the present invention;

Fig. 3 is a schematic plan view of the rear roof beam structure of the present invention.

In the figure: 1—side guard; 2—front probe beam; 3—front roof beam; 4—middle roof beam; 5—filling and mining conveyor; 6—push-pull oil cylinder; 7—rear roof beam; 8—drawing box ; 9—push plate; 10—track; 11—pushing device; 12—rear column; 13—adjusting jack; 14—center column; 15—four-bar linkage; 16—base; 17—front column; Body; 19—coal preventer; 20—hydraulic cylinder; 21—pulling plate.

Detailed ways:

An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, the fully mechanized caving and filling coal mining hydraulic support includes a front roof beam 3, a front probe beam 2 arranged in front of the front roof beam 3, a side guard 1 connected to the front probe beam 2, and a front roof beam 3, a front column 17, a center column 14 and a four-bar linkage mechanism 15 are provided, and the rear end of the front roof beam 3 is provided with a middle roof beam 4 and a rear column 12 vertically erected between the base 16 and the middle roof beam 4. A filling and mining conveyor 5 is suspended below the beam 4, and an adjusting jack 13 for adjusting the pushing device 11 up and down is fixed on the base 16 below the top beam 4.

As shown in accompanying drawing 2, the back end of middle top beam 4 is hinged with rear top beam 7 that can put coal, and the bottom end of middle top beam 4 and back top beam 7 is provided with the track 10 that slides back and forth for filling mining conveyor 5, and middle top beam 4 A push-pull oil cylinder 6 is provided between the roof beam 4 and the rear roof beam 7 to lift or lower the rear roof beam 7, and a push-pull oil cylinder 6 is provided at the hinge joint of the middle roof beam and the rear roof beam to realize the middle position and the low position of the rear roof beam. coal.

As shown in accompanying drawing 3, rear top beam 7 comprises box body 18, is provided with drawer box 8 matched with it in box body 18, and hydraulic cylinder 20 connected with box body 18 inner side is symmetrically provided in drawer box 8, The box body 18 is provided with a drawer plate 21, the drawer plate 21 is provided with a coal discharger 19, and the front end of the rear top beam 7 is provided with a push plate 9, so as to realize dense filling of the coal mining space and the coal discharge space in the goaf.

Working process: Fully mechanized caving and filling coal mining hydraulic support can not only maintain the working space of normal coal mining in the working face, but also realize coal mining in front of the working face, coal discharge in the rear and complete filling of the goaf, while pressing the filling body Reality. Due to the three roof beam structure of the front roof beam 3, the middle roof beam 4 and the rear roof beam 7, the pressure of the roof is carried, and the sinking amount of the roof before filling is controlled. The rear end of the middle roof beam 4 is hinged with a rear roof beam 7 that can put coal, and the rear roof beam 7 includes a box body 18. The box body 18 is provided with a drawer plate 21. A push-pull oil cylinder 6 is provided between the top beam 4 and the back top beam 7 to lift or put down the back top beam 7 . That is to say, the middle position coal discharge can be realized by the pull plate 21 through the coal discharge device 19, and the low position coal discharge of the top beam 7 can be realized after being lowered. The box body 18 is provided with a drawer box 8 matched therewith, and a hydraulic cylinder connected to the inner side of the box body 18 is symmetrically provided in the drawer box 8. 8 cooperates with the pushing plate 9 to realize the dense filling of different heights of the goaf coal mining space and coal discharge space. The bottom of the middle roof beam 4 and the rear roof beam 7 is provided with a track 10 for the backfilling and mining conveyor 5 to slide back and forth, so that the filling and mining conveyor can slide back and forth along the track 10, so that the filling material can be filled at different positions without affecting the backfilling and mining conveyor. Top beam 7 lifts or puts down.

Claims (1)

1. A hydraulic support for fully mechanized caving and filling coal mining, including a front roof beam (3), a front probe beam (2) arranged in front of the front roof beam (3), and a side guard connected to the front probe beam (2) (1), the front top beam (3) is provided with a front column (17), a middle column (14) and a four-bar linkage (15), and the rear end of the front top beam (3) is provided with a middle top beam (4) and The rear column (12) is erected vertically between the base (16) and the middle roof beam (4), the filling and mining conveyor (5) is suspended below the middle roof beam (4), and the base below the middle roof beam (4) (16) is fixed with the adjustment jack (13) of up-and-down adjustment pushing device (11), the rear end of the middle top beam (4) is hinged with the rear top beam (7) that can put coal, and the middle top beam (4) is connected with the rear top beam (4). A push-pull oil cylinder (6) is provided between the roof beams (7) to lift or lower the rear roof beam (7). There is a track (10) for the filling and mining conveyor (5) to slide back and forth, so that the filling and mining conveyor can slide back and forth along the track (10), which can realize the filling of different positions of the filling material without affecting the lifting of the rear top beam (7). up or down; the rear top beam (7) includes a box body (18), and the box body (18) is provided with a drawer box (8) matched with it, and the drawer box (8) is symmetrically provided with The hydraulic cylinder (20) connected to the inside of the box body (18), the box body (18) is provided with a drawer plate (21), and the drawer plate (21) is provided with a coal discharger (19). 19) Realize the pulling of the pull plate (21) to discharge the coal at the middle position, or realize the low position coal discharge of the rear roof beam (7), the front end of the rear roof beam (7) is provided with a push plate (9), and the drawer 8) Cooperate with the push plate (9) to achieve dense filling of different heights in the goaf coal mining space and coal discharge space.