阅读说明：本技术 一种自动化充填采煤多孔底卸式输送机及方法 (Automatic filling coal mining porous bottom-discharge type conveyor and method ) 是由 张强 张吉雄 宋卫剑 郑庆学 刘宏军 田秀国 黄宝柱 尹宝杰 孙奇志 于 2020-12-21 设计创作，主要内容包括：本发明公开了一种自动化充填采煤多孔底卸式输送机及方法,属于充填采煤技术领域。输送机包括和充填液压支架配套使用变频调速系统和卸料口控制系统；所述变频调速系统根据监测数据调节多孔底卸式输送机的运行速度；所述卸料口控制系统自动控制卸料口的打开与关闭。在充填采煤工作面充填过程中,该自动化充填采煤多孔底卸式输送机根据矸石量的不同调节运行速度,从而节省了电能,减少了装备磨损；同时能在卸料达到设定高度时自动控制卸料口关闭,实现卸料自动化,减轻工人劳动强度,从而有效控制固体充填物料的充填量、充填速度,保证充填效果,促进充填工作面自动化水平。(The invention discloses an automatic filling coal mining porous bottom-discharge type conveyor and a method, and belongs to the technical field of filling coal mining. The conveyor comprises a variable frequency speed regulating system and a discharge opening control system which are matched with the filling hydraulic support; the variable frequency speed regulating system regulates the running speed of the porous bottom-dump conveyor according to the monitoring data; the discharge opening control system automatically controls the opening and closing of the discharge opening. In the filling process of the filling coal face, the automatic filling coal mining porous bottom-dump conveyor adjusts the running speed according to different gangue quantities, thereby saving electric energy and reducing equipment abrasion; meanwhile, the discharge opening can be automatically controlled to be closed when the discharging reaches a set height, so that the discharging automation is realized, the labor intensity of workers is reduced, the filling amount and the filling speed of solid filling materials are effectively controlled, the filling effect is ensured, and the automation level of a filling working surface is promoted.)

1. An automatic filling coal mining porous bottom discharge type conveyor comprises a variable frequency speed control system, a scraper porous discharge conveyor and a discharge opening control system, wherein the variable frequency speed control system is matched with a filling hydraulic support; the method is characterized in that: the variable-frequency speed regulation system comprises a frequency converter (2), a speed regulation controller (3) and a laser scale (4), the variable-frequency speed regulation system automatically regulates the running speed of the porous bottom-discharge conveyor according to monitoring data, the frequency converter (2) is installed at the tail (5) of the scraper porous discharge conveyor, the running speed of the tail of the scraper porous discharge conveyor is regulated by receiving signals of the speed regulation controller (3), the speed regulation controller (3) is installed at the tail (5) of the scraper porous discharge conveyor, on one hand, data are collected from the laser scale and speed regulation algorithm operation is carried out, and on the other hand, the speed regulation control is carried out by communication with the frequency converter; the laser scale (4) is arranged at the position of a material receiving port of the tail (6) of the scraper porous unloading conveyor, and the speed regulation controller (3) performs speed regulation control according to the amount of filling material measured by the laser scale (4); the discharge opening control system comprises a discharge height monitoring sensor (7) and an oil cylinder controller (8), the discharge height monitoring sensor (7) is installed at the lower part of a discharge opening (1) at the tail of the scraper porous discharge conveyor, the oil cylinder controller (8) is installed at the side part of the discharge opening (1), and when the discharge reaches a set height, the oil cylinder controller (8) controls an oil cylinder to close the discharge opening (1) according to a program and an instruction.

2. An automated fill mining multihole bottom discharge conveyor according to claim 1, characterized in that: the discharging height monitoring sensor (7) is arranged on a support on one side of the lower part of the discharging opening (1), and one sensor is arranged below each discharging opening (1).

3. An automated fill mining multihole bottom discharge conveyor according to claim 1, characterized in that: the oil cylinder controllers (8) are arranged in pairs and are respectively positioned below the oil cylinders (9) at the two side parts of the discharge opening (1).

4. An automated fill mining multihole bottom discharge conveyor according to claim 1, characterized in that: the porous discharge conveyor is suspended below a rear top beam of the filling hydraulic support through an anchor chain (11) and is used as equipment for transporting and discharging the fallen gangue.

5. The method for conveying an automatic filling coal mining porous bottom-dump conveyor according to claim 1, characterized by comprising the following steps:

a. during filling operation, a discharge opening (1) is opened, solid filling materials are conveyed from the tail to the head direction through a scraper porous discharge conveyor, the quality of the materials is measured through a laser scale (4) at the tail and fed back to a speed regulation controller (3), and the speed regulation controller (3) controls a frequency converter (2) to regulate the speed according to the operation result of a speed regulation algorithm;

b. a scraper in the scraper porous unloading conveyor conveys filling materials into a first unloading opening (1), an unloading height monitoring sensor (7) arranged below the unloading opening monitors and judges whether the unloading height reaches a preset height, when the unloading height reaches a set value, the unloading height monitoring sensor (7) transmits a signal to an oil cylinder controller (8), and the oil cylinder controller (8) controls an oil cylinder (9) to close the current unloading opening (1) according to a program and an instruction to start the filling of the next unloading opening;

c. and (c) repeating the steps a and b until the discharging and stacking of the filling materials on the whole working surface are finished, and finishing the automatic filling.

Technical Field

The invention relates to a coal filling and mining porous bottom-discharge conveyor, in particular to an automatic coal filling and mining porous bottom-discharge conveyor and a method which are suitable for solving the problems of 'three-down' coal pressing, surface subsidence and the like.

Background

The filling coal mining technology can be popularized and applied nationwide because the problems of 'third coal pressing', surface subsidence and the like can be solved. The multi-hole bottom-dump conveyor is important equipment of a solid filling working face, is matched with a filling hydraulic support and a gangue transfer loader for use, and mainly adopts solid filling materials such as gangue and the like as transportation materials.

At present, most of porous bottom-dump conveyors filling a working surface operate in a constant speed state when working, and the amount of waste rocks is large and small, so that the porous bottom-dump conveyors consume large power; when speed is great, because of there is the difference in speed in materials such as waste rock and porous bottom-dump conveyor, the waste rock can cause the impact to devices such as porous bottom-dump conveyor scraper blade, and porous bottom-dump conveyor speed is faster, and the impact is big more, and wearing and tearing are more. And the discharge opening control of the existing porous bottom-dump conveyor still needs manual operation, the labor intensity is high, the filling efficiency is low, and the tamping and roof-contacting of filling materials cannot be guaranteed. Therefore, the research on the multi-hole bottom-dump conveyor capable of being automatically controlled is a great problem of realizing the synchronous operation of mining and filling and improving the filling efficiency.

Disclosure of Invention

The technical problem is as follows: the invention aims to overcome the defects in the prior art and provides the automatic filling coal mining porous bottom-discharge type conveyor and the method, which have the advantages of simple structure, convenience in operation, electric energy saving and filling efficiency improvement of a filling working face.

The technical scheme is as follows: the invention relates to an automatic filling coal mining porous bottom discharge type conveyor, which comprises a variable frequency speed regulating system, a scraper porous discharge conveyor and a discharge opening control system, wherein the variable frequency speed regulating system is matched with a filling hydraulic support; the variable-frequency speed regulation system comprises a frequency converter, a speed regulation controller and a laser scale, the variable-frequency speed regulation system automatically regulates the running speed of the porous bottom-discharge conveyor according to monitoring data, the frequency converter is arranged at the tail position of the scraper porous discharge conveyor, the running speed of the tail of the scraper porous discharge conveyor is regulated by receiving signals of the speed regulation controller, the speed regulation controller is arranged at the tail position of the scraper porous discharge conveyor, on one hand, data are collected from the laser scale and speed regulation algorithm operation is carried out, and on the other hand, the variable-frequency speed regulation system is communicated with the frequency converter to carry out speed regulation control; the laser scale is arranged at the tail material receiving port of the scraper porous unloading conveyor, and the speed regulation controller performs speed regulation control according to the filling material amount measured by the laser scale; the discharge opening control system comprises a discharge height monitoring sensor and an oil cylinder controller, the discharge height monitoring sensor is installed on the lower portion of a discharge opening of the tail of the scraper porous discharge conveyor, the oil cylinder controller is installed on the side portion of the discharge opening, and when the discharge reaches a set height, the oil cylinder controller controls the oil cylinder to close the discharge opening according to a program and an instruction.

The discharging height monitoring sensor is arranged on the bracket at one side of the lower part of the discharging opening, and one sensor is arranged below each discharging opening.

The oil cylinder controllers are arranged in pairs and are respectively positioned below the oil cylinders at the two side parts of the discharge opening.

The porous discharge conveyor is suspended below a rear top beam of the filling hydraulic support through an anchor chain and is used as equipment for transporting and discharging the waste rock.

The conveying method of the automatic filling coal mining porous bottom-discharge conveyor is characterized by comprising the following steps of:

a. during filling operation, a discharge opening is opened, solid filling materials are conveyed from the tail to the head through a scraper porous discharge conveyor, the quality of the materials is measured through a laser scale at the tail and fed back to a speed regulation controller, and the speed regulation controller controls a frequency converter to regulate the speed according to the operation result of a speed regulation algorithm;

b. a scraper in the scraper porous unloading conveyor conveys the filling material into a first unloading opening, whether the unloading height reaches a preset height is monitored and judged through an unloading height monitoring sensor arranged below the unloading opening, when the unloading height reaches a set value, the unloading height monitoring sensor transmits a signal to an oil cylinder controller, and the oil cylinder controller controls an oil cylinder to close the current unloading opening according to a program and an instruction, and starts to fill the next unloading opening;

c. and (c) repeating the steps a and b until the discharging and stacking of the filling materials on the whole working surface are finished, and finishing the automatic filling.

Has the advantages that: due to the adoption of the technical scheme, the invention is matched with a filling hydraulic support for use, adopts a variable frequency speed control system and a discharge port control system, and can adjust the running speed of the conveyor according to different gangue quantities through the automatic filling coal mining porous bottom-dump conveyor in the filling coal face filling process, thereby greatly saving electric energy and reducing equipment abrasion; meanwhile, when the discharging height reaches the set height, the discharging opening is automatically controlled to be closed, the discharging automation is realized, the labor intensity of workers is reduced, the filling amount and the filling speed of solid filling materials can be effectively controlled, the filling effect is ensured, and the automation level of a filling working surface is promoted. Its simple structure, convenient operation solves "three lower" coal briquetting and a great deal of problems such as earth's surface subsidence, has extensive practicality in this technical field.

Drawings

FIG. 1 is a schematic view of the construction of an automated filling coal mining multi-hole bottom-dump conveyor of the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;

fig. 3 is a working flow chart of the automatic filling coal mining porous conveyor of the invention.

In the figure: 1-a discharge opening; 2-a frequency converter; 3-speed regulation controller; 4-laser scale; 5-scraper porous unloading conveyor tail; 6-scraper porous unloading conveyor tail machine; 7-a discharge height monitoring sensor; 8-a cylinder controller; 9-oil cylinder; 10-a scraper; 11-anchor chain.

The specific implementation mode is as follows:

the invention will be further described with reference to examples in the drawings to which:

as shown in fig. 1 and fig. 2, the automatic filling coal mining porous bottom-discharge conveyor of the invention mainly comprises a filling hydraulic support, a scraper porous discharge conveyor, a variable frequency speed control system and a discharge opening control system, wherein the variable frequency speed control system and the discharge opening control system are matched with the filling hydraulic support; the porous discharging conveyor comprises a chain conveyor belt positioned in the ledge and a scraper 10 arranged on the chain conveyor belt, and is suspended below a rear top beam of the filling hydraulic support through an anchor chain 11 to serve as equipment for transporting and discharging fallen gangue. The variable-frequency speed regulation system comprises a frequency converter 2, a speed regulation controller 3 and a laser scale 4, the variable-frequency speed regulation system automatically regulates the running speed of the porous bottom-discharge conveyor according to monitoring data, the frequency converter 2 is installed at the tail 5 of the scraper porous discharge conveyor, the running speed of the porous bottom-discharge conveyor is regulated by receiving signals of the speed regulation controller 3, the speed regulation controller 3 is installed at the tail 5 of the scraper porous discharge conveyor, on one hand, data are collected from the laser scale and speed regulation algorithm operation is carried out, and on the other hand, the variable-frequency speed regulation system is communicated with the frequency converter to carry out speed regulation control; the laser scale 4 is arranged at the position of a material receiving port of the tail 6 of the scraper porous unloading conveyor, and the speed regulation controller 3 carries out speed regulation control according to the amount of filling materials measured by the laser scale 4; the discharge opening control system comprises a discharge height monitoring sensor 7 and an oil cylinder controller 8, wherein the discharge height monitoring sensor 7 is installed on a support on one side of the lower portion of the discharge opening 1, and one is installed below each discharge opening 1. The oil cylinder controllers 8 are arranged at the side parts of the discharge opening 1, are arranged in pairs and are respectively positioned below the oil cylinders 9 at the two side parts of the discharge opening 1. When the discharging reaches the set height, the oil cylinder controller 8 controls the oil cylinder to close the discharging opening 1 according to the program and the instruction.

The invention discloses an automatic filling coal mining porous bottom discharge type conveying method, which comprises the following specific steps:

a. installation of working face equipment: the scraper porous unloading conveyor is suspended below a back top beam of the filling hydraulic support through an anchor chain 11, and a variable frequency speed regulating system and a discharge opening control system are installed corresponding to the scraper porous unloading conveyor;

b. during filling operation, opening a discharge opening 1 on the scraper porous discharge conveyor, conveying solid filling materials from a tail 6 of the scraper porous discharge conveyor to a tail 5 of the scraper porous discharge conveyor through the scraper porous discharge conveyor, measuring the quality of the materials through a laser scale 4 arranged at the tail 6 of the scraper porous discharge conveyor and feeding the measured quality back to a speed regulation controller 8 in the process of conveying the solid filling materials, and controlling the speed regulation of a frequency converter 2 by the speed regulation controller 8 according to the operation result of a speed regulation algorithm;

c. a scraper 10 in the scraper porous unloading conveyor conveys filling materials into a first unloading opening, whether the unloading height reaches a preset height is monitored and judged through an unloading height monitoring sensor 7 arranged below the unloading opening, when the unloading height reaches a set height value, the unloading height monitoring sensor 7 transmits a signal to an oil cylinder controller 8, the oil cylinder controller 8 controls an oil cylinder 9 to close a current unloading opening 1 according to a program and an instruction, then the next unloading opening is filled, and the filling tasks of all the unloading openings are completed in sequence; if the unloading height does not reach the set height value, continuing to pile the materials until the unloading reaches the set height;

d. and c, repeating the steps b and c until the discharge and accumulation of the filling materials on the whole working surface are finished, and finishing the automatic filling.