Scraper conveyor pushing part capable of automatically adjusting height

Abstract

The utility model relates to the field of coal mine underground mining, belongs to the field of coal mine machinery, and particularly relates to a scraper conveyor pushing part capable of automatically adjusting the height, which comprises a pushing seat, an oil cylinder, a pushing base, an upper support seat, a range finder and a controller, the pushing seat is connected with the pushing base through a fixing pin, and the pushing base is connected with the lower end of the oil cylinder through a fixing pin. The upper supporting seat is connected with the upper end of the oil cylinder through a fixing pin. When the height difference between the working face bottom plate and the roadway bottom plate is changed, the distance measuring instrument transmits a signal to the controller, the controller controls the oil cylinder to stretch out and draw back through the electro-hydraulic reversing valve to adjust the height of the pushing part, it is ensured that the working face bottom plate and the upper supporting face of the pushing part are in a flush state, and the intelligent level and the automation level of the scraper conveyor are improved; and the requirements of safe and efficient mining of a mine are met.

Description

Technical Field

[0001] The utility model relates to the field of underground coal mining, belonging to the field of coal mining machinery, and specifically relates to a push part of a scraper conveyor with automatic height adjustment. Background Technique

[0002] On the working face, due to space limitations, the roadway needs to be undercut, and the push part of the scraper conveyor is arranged in the undercut roadway. The roadway floor has undulations, resulting in inconsistent height differences with the floor of the working face. The traditional push part of the scraper conveyor is set as a multi-layer pad frame structure, and each layer is connected by bolts. When adjusting the height of the push part, it is necessary to manually add or remove the pad frames to ensure that the floor of the working face of the scraper conveyor is flush with the upper support surface of the push part. The workload is large, time-consuming and laborious, seriously affecting the coal mining efficiency of the coal mine. Summary of the Invention

[0003] The utility model provides a push part of a scraper conveyor with automatic height adjustment, which uses an automatic control system to adjust the height of the push part of the scraper conveyor, ensures that the floor of the working face of the scraper conveyor is flush with the upper support surface of the push part, makes its work reliable and stable, and meets the requirements of safe, efficient and automated mining in the mine.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a push part of a scraper conveyor with automatic height adjustment, including a push seat 1, a fixing pin 2, an oil cylinder 3, a push base 4, an upper support seat 5, a distance measuring instrument 8, and a controller 10. The push seat 1 is connected to the push base 4 through the fixing pin 2, the push base 4 and the lower end of the oil cylinder 3 are connected through the fixing pin 2, the upper support seat 5 and the upper end of the oil cylinder 3 are connected through the fixing pin 2, the lower part of the upper support seat 5 is embedded in the push base 4, the upper support seat 5 is connected to the head and tail frame body 6 through bolts and positioning pins, the fixing frame 7 is fixed to the baffle and the coal return hood of the head and tail frame body 6 respectively by bolts, the distance measuring instrument 8 is fixed to the fixing frame 7 by bolts, the hanging baffle 9 is fixed to the head and tail frame body 6 by bolts, and the controller 10 is fixed to the hanging baffle 9.

[0005] For the push part of the scraper conveyor with automatic height adjustment, the controller 10 controls the height of the telescopic movement of the oil cylinder 3 according to the height difference value of the chute floor and the working face floor feedback by the distance measuring instrument 8. The controller 10 controls the telescopic movement of the oil cylinder 3 through an electro-hydraulic reversing valve 14. The stroke sensor 13 is used to collect the stroke information of the oil cylinder 3 and feedback it to the controller 10. The pressure sensor 11 is used to collect the pressure of the rodless cavity of the oil cylinder 3 and feedback it to the controller 10. The two-way lock 12 is used to lock the hydraulic circuit when the oil cylinder 3 stops moving, and the safety valve 16 is used to ensure the safety of the hydraulic circuit.

[0006] The push part of the scraper conveyor with automatic height adjustment is used for the working condition of undercutting the working face.

[0007] The beneficial effects of the present utility model are as follows: For the scraper conveyor pushing part with automatic height adjustment, when there are undulations in the gateway floor, the controller issues commands to the electro-hydraulic directional valve based on the values fed back by the distance measuring instrument, controlling the telescoping of the oil cylinder to ensure that the working face floor of the scraper conveyor is flush with the upper support surface of the pushing part, improving work efficiency and enhancing the intelligent and automated level of the scraper conveyor. Description of the Drawings

[0008] Figure 1 is a pushing part of a scraper conveyor with automatic height adjustment according to the present utility model;

[0009] Figure 2 is a schematic diagram of the principle of the automatic control system of the present utility model;

[0010] As shown in the figure, 1. Pushing seat, 2. Fixed pin, 3. Oil cylinder, 4. Pushing base, 5. Upper support seat, 6. Head and tail frame body, 7. Fixed frame, 8. Distance measuring instrument, 9. Hanging baffle, 10. Controller, 11. Pressure sensor, 12. Two-way lock, 13. Stroke sensor, 14. Electro-hydraulic directional valve, 15. Pressure gauge, 16. Safety valve, P. Total inlet liquid, R. Total return liquid, PA. Liquid supply to the rodless cavity, PB. Liquid supply to the rod cavity. Specific Embodiments

[0011] The following further details the present utility model in conjunction with the drawings: A pushing part of a scraper conveyor with automatic height adjustment according to the present utility model includes a pushing seat 1, a fixed pin 2, an oil cylinder 3, a pushing base 4, an upper support seat 5, a distance measuring instrument 8 and a controller 10. The pushing seat 1 is connected to the pushing base 4 through the fixed pin 2, the pushing base 4 and the lower end of the oil cylinder 3 are connected through the fixed pin 2, the upper support seat 5 and the upper end of the oil cylinder 3 are connected through the fixed pin 2, the lower part of the upper support seat 5 is embedded in the pushing base 4, the upper support seat 5 is connected to the head and tail frame body 6 through bolts and positioning pins, the fixed frame 7 is fixed to the baffle and the coal return cover of the head and tail frame body 6 by bolts respectively, the distance measuring instrument 8 is fixed to the fixed frame 7 by bolts, the hanging baffle 9 is fixed to the head and tail frame body 6 by bolts, and the controller 10 is fixed to the hanging baffle 9.

[0012] The controller 10 controls the height of the telescoping of the oil cylinder 3 according to the height difference value between the gateway floor and the working face floor fed back by the distance measuring instrument 8. The controller 10 controls the telescoping of the oil cylinder 3 through the electro-hydraulic directional valve 14. The stroke sensor 13 is used to collect the stroke information of the oil cylinder 3 and feed it back to the controller 10, and the pressure sensor 11 is used to collect the pressure in the rodless cavity of the oil cylinder 3 and feed it back to the controller 10.

[0013] During the operation of the scraper conveyor, when the value uploaded by the rangefinder 8 to the controller 10 is lower than the set value, the controller 10 issues an instruction, and the electro-hydraulic directional valve 14 operates. The emulsion liquid passes through the electromagnetic directional valve 14, flows through the double check valve 12 and enters the rod chamber of the oil cylinder 3 to retract the piston rod, and the upper support seat 5 moves downward slowly. When the value of the rangefinder 8 monitored by the controller 10 reaches the set value, the controller 10 issues an instruction to stop the operation of the electro-hydraulic directional valve 14; when the value uploaded by the rangefinder 8 to the controller 10 is higher than the set value, the controller 10 issues an instruction, and the electro-hydraulic directional valve 14 operates. The emulsion liquid passes through the electromagnetic directional valve 14, flows through the double check valve 12 and enters the rodless chamber of the oil cylinder 3 to extend the piston rod, and the upper support seat 5 moves upward slowly. When the value of the rangefinder 8 monitored by the controller 10 reaches the set value, the controller 10 issues an instruction to stop the operation of the electro-hydraulic directional valve 14. When the oil cylinder 3 stops operating, the double check valve 12 is used to lock the hydraulic circuit, and the safety valve 16 is used to ensure the safety of the hydraulic circuit. The scraper conveyor pushing part with automatic height adjustment can make the scraper conveyor in the best working state, improve the working efficiency, and enhance the intelligent and automatic level of the scraper conveyor.

[0014] It should be understood that the detailed description of the technical solution of the present invention by means of the preferred embodiments above is illustrative rather than restrictive. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic height-adjusting pushing part of a scraper conveyor, characterized in that: It includes a pushing seat (1), a fixing pin (2), an oil cylinder (3), a pushing base (4), an upper support seat (5), a distance measuring instrument (8), and a controller (10). The pushing seat (1) is connected to the pushing base (4) through the fixing pin (2). The pushing base (4) and the lower end of the oil cylinder (3) are connected through the fixing pin (2). The upper support seat (5) and the upper end of the oil cylinder (3) are connected through the fixing pin (2). The lower part of the upper support seat (5) is embedded in the pushing base (4). The upper support seat (5) is connected to the head and tail frame body (6) through bolts and positioning pins. The fixing frame (7) is fixed to the baffle plate and the coal return cover of the head and tail frame body (6) respectively by bolts. The distance measuring instrument (8) is fixed to the fixing frame (7) by bolts. The hanging baffle plate (9) is fixed to the head and tail frame body (6) by bolts. The controller (10) is fixed to the hanging baffle plate (9).

2. The automatic height-adjusting scraper conveyor pushing section according to claim 1, wherein: The controller (10) controls the height of the telescopic movement of the oil cylinder (3) according to the height difference value between the gateway floor and the working face floor fed back by the distance measuring instrument (8). The controller (10) controls the telescopic movement of the oil cylinder (3) through an electro-hydraulic reversing valve (14). A stroke sensor (13) is used to collect the stroke information of the oil cylinder (3) and feed it back to the controller (10). A pressure sensor (11) is used to collect the pressure in the rodless cavity of the oil cylinder (3) and feed it back to the controller (10). A two-way lock (12) is used to lock the hydraulic circuit when the oil cylinder (3) stops operating. A safety valve (16) is used to ensure the safety of the hydraulic circuit.

3. An automatic height-adjusting scraper conveyor pushing part according to claim 1, characterized in that: The scraper conveyor pushing part with automatic height adjustment is used for the working condition of the working face undercutting.

Images