Scraper conveyer floating and sliding early warning device

Abstract

The utility model aims to provide a floating and sliding early warning device of a scraper conveyor, which belongs to the technical field of coal mining and comprises an electric hydraulic control support controller, a main control computer, a support base arranged on the same support, and a first tilt angle sensor and a second tilt angle sensor arranged on a scraper conveyor base. The output ends of the first tilt angle sensor and the second tilt angle sensor are connected with the input end of the electric hydraulic control support controller, the output end of the electric hydraulic control support controller is connected with the input end of the main control computer, and the tilt angle measuring direction of the first tilt angle sensor is parallel to the direction, pointing to the coal wall, of the contact face of the support base and the bottom plate. The inclination angle measuring direction of the second inclination angle sensor is perpendicular to the direction, pointing to the coal wall, of a chute middle plate of the scraper conveyor. By using the device, floating and slipping can be found in time, and measures can be taken in time.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining, and in particular relates to a slip warning device for a scraper conveyor. Background Art

[0002] Scraper conveyor is the key equipment to realize mechanized production of comprehensive mining working face. It is the running track of coal mining machine and also the key fulcrum for hydraulic support to realize self-movement. The three are closely related in spatial position. In the field practice, it is found that when the inclination angle of the scraper conveyor is greater than a certain value of the inclination angle of the support base (the inclination angle is perpendicular to the coal wall), the coal mining machine drum cannot complete the top coal cutting, and the drum cutting teeth will cut the front beam of the support or the anti-flaking side and other components, causing damage to the drum cutting teeth or the support components. At the same time, since it is impossible to complete the coal cutting by normally retracting the anti-flaking side, the top coal is often cut by dropping the front column and the front beam of the support, resulting in a large range of empty top, and it is very easy to cause the roof to fall. This situation is called floating. The key to solving this problem is to promptly judge that the difference between the inclination angle of the scraper conveyor and the inclination angle of the support base is greater than a fixed value, and to issue an early warning to pull back the conveyor and adjust the angle of the scraper conveyor. At present, the front slip and the inclination angle of the support of the scraper conveyor are manually measured, which requires stopping the machine for empty measurement, which seriously affects the production efficiency. In view of the current lack of scraper conveyor floating early warning, a scraper conveyor floating early warning device is provided. Utility Model Content

[0003] The purpose of the utility model is to provide a scraper conveyor drift warning device, which can solve the problem that the existing fully mechanized mining face scraper conveyor lacks a drift warning device, and can timely detect drift and take timely measures to avoid the situation where the coal mining machine drum cannot complete the top coal cutting, the drum cutting teeth will cut the front beam of the support or the anti-flaking side and other components, causing damage to the drum cutting teeth or the support components. At the same time, since it is impossible to complete the coal cutting by normally collecting the anti-flaking side, the top coal is often cut by dropping the front column and front beam of the support, resulting in a large area of ​​empty top, which can effectively improve the safety production efficiency.

[0004] The utility model adopts the following technical solutions:

[0005] A scraper conveyor slip warning device comprises an electro-hydraulic control support controller, a main control computer, and an inclination sensor 1 and an inclination sensor 2 respectively installed on a support base and a scraper conveyor base at the same support, wherein the output ends of the inclination sensor 1 and the inclination sensor 2 are respectively connected to the input end of the electro-hydraulic control support controller, the output end of the electro-hydraulic control support controller is connected to the input end of the main control computer, the inclination measurement direction of the inclination sensor 1 is parallel to the direction in which the contact surface between the support base and the bottom plate points to the coal wall, and the inclination measurement direction of the inclination sensor 2 is perpendicular to the direction in which the chute middle plate of the scraper conveyor points to the coal wall.

[0006] Furthermore, every five brackets, a first inclination sensor and a second inclination sensor are respectively installed on the same bracket.

[0007] Furthermore, the inclination sensor 2 is connected to the scraper conveyor through a mounting bracket, and the mounting bracket includes an L-shaped bracket and a sensor mounting base. The L-shaped bracket is provided with a mounting hole corresponding to the scraper conveyor, and the end of the short side of the L-shaped bracket is connected to one end of the sensor mounting base through a hinge, and the hinge is provided with a positioning hole 1. The sensor mounting base is provided with a mounting hole corresponding to the inclination sensor 2, and a level is vertically provided on the outside of the sensor mounting base.

[0008] Furthermore, the inner sides of the L-shaped bracket and the sensor mounting base are respectively provided with connecting ear 1 and connecting ear 2, the connecting ear 1 is connected to the adjusting rod, the connecting ear 2 is connected to the screw, one end of the screw extends into the adjusting rod and is fixed by a bolt.

[0009] Furthermore, a second positioning hole is provided at the bottom of the L-shaped bracket, and a positioning line is provided at the bottom of the sensor mounting base.

[0010] Furthermore, a separate goniometer is provided on the mounting bracket, and the separate goniometer includes side rod 1 and side rod 2, one end of side rod 1 is connected to one end of side rod 2, and the connecting end is provided with opening 1, and the other ends of side rod 1 and side rod 2 are connected to a protractor with a scale, and the connecting end of side rod 1 and the protractor is provided with opening 2, and opening 1 and opening 2 are respectively connected to positioning hole 1 and positioning hole 2.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The utility model utilizes an inclination sensor to collect inclination data of the scraper conveyor and the support base, and compares the difference with the critical value of drifting for early warning, so as to timely detect drifting and take timely measures to avoid the situation where the coal mining machine drum cannot complete the top coal cutting, and the drum cutting teeth will cut the front beam of the support or the anti-flaking ridge and other components, causing damage to the drum cutting teeth or the support components. At the same time, since it is impossible to complete the coal cutting by normally collecting the anti-flaking ridge, the top coal is often cut by dropping the front column and front beam of the support, resulting in a large range of empty top, which can effectively improve the safety production efficiency.

[0013] 2. The utility model installs inclination sensors on the scraper conveyor and the support base at the same support, and its signal is transmitted to the electro-hydraulic control support controller, and then uploaded to the main control computer in the control room, and the collected inclination data is subjected to difference analysis. When the scraper conveyor completes the pushing and sliding action, the length of the push rod is about 800mm, and the difference is judged. When it is greater than the set value, it is considered that it has drifted, and an early warning message is issued to remind the working face operators to pull back the scraper conveyor in the early warning section, return the knife, push the slide again, and take measures to suppress the slide if necessary. When it is less than the set value, it is considered that it has not drifted, and coal can be mined normally, completing the entire early warning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the layout of the early warning device of the utility model;

[0015] Figure 2 This is a schematic diagram of the principle of the early warning device of the utility model;

[0016] Figure 3 This is a flow chart of the early warning device of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the mounting bracket;

[0018] Figure 5 It is a structural schematic diagram of a separate goniometer;

[0019] Figure 6 It is a schematic diagram of the connection between the mounting bracket and the separate goniometer;

[0020] Among them: 1-electro-hydraulic control bracket controller; 2-main control computer; 3-inclination sensor 1; 4-inclination sensor 2; 5-L-shaped bracket; 6-sensor mounting base; 7-positioning hole 1; 8-level; 9-connecting ear 1; 10-connecting ear 2; 11-adjusting rod; 12-screw; 13-positioning hole 2; 14-positioning line; 15-side rod 1; 16-side rod 2; 17-opening 1; 18-protractor; 19-opening 2. DETAILED DESCRIPTION

[0021] The utility model is further described with reference to the accompanying drawings.

[0022] As shown in the figure, a scraper conveyor drift warning device includes an electro-hydraulic control support controller 1, a main control computer 2, and a tilt sensor 1 3 and a tilt sensor 2 4 respectively installed on the support base and the scraper conveyor base at the same support, the output ends of the tilt sensor 1 3 and the tilt sensor 2 4 are respectively connected to the input end of the electro-hydraulic control support controller 1, the output end of the electro-hydraulic control support controller 1 is connected to the input end of the main control computer 2, the tilt measurement direction of the tilt sensor 1 3 is parallel to the direction of the contact surface between the support base and the bottom plate pointing to the coal wall, and the tilt measurement direction of the tilt sensor 2 4 is perpendicular to the direction of the chute middle plate of the scraper conveyor pointing to the coal wall.

[0023] Every five brackets, an inclination sensor 1 3 and an inclination sensor 2 4 are respectively installed on the same bracket.

[0024] The inclination sensor 2 4 is connected to the scraper conveyor through a mounting bracket, and the mounting bracket includes an L-shaped bracket 5 and a sensor mounting base 6. The L-shaped bracket 5 is provided with a mounting hole corresponding to the scraper conveyor, and the end of the short side of the L-shaped bracket 5 is connected to one end of the sensor mounting base 6 through a hinge. The hinge is provided with a positioning hole 7. The sensor mounting base 6 is provided with a mounting hole corresponding to the inclination sensor 2 4, and a level 8 is vertically provided on the outer side of the sensor mounting base 6.

[0025] The inner sides of the L-shaped bracket 5 and the sensor mounting base 6 are respectively provided with a connecting ear 1 9 and a connecting ear 2 10, the connecting ear 1 9 is connected to an adjusting rod 11, and the connecting ear 2 10 is connected to a screw rod 12, one end of the screw rod 12 extends into the adjusting rod 11 and is fixed by bolts.

[0026] The bottom of the L-shaped bracket 5 is provided with a second positioning hole 13 , and the bottom of the sensor mounting base 6 is provided with a positioning line 14 .

[0027] The mounting bracket is also provided with a separate goniometer, which includes a side bar 15 and a side bar 16. One end of the side bar 15 is connected to one end of the side bar 16, and an opening 17 is provided at the connecting end. The other ends of the side bar 15 and the side bar 16 are connected to a protractor 18 with a scale. The connecting end of the side bar 15 and the protractor 18 is provided with an opening 2 19. The opening 17 and the opening 2 19 are respectively connected to the positioning hole 1 7 and the positioning hole 2 13.

[0028] Angle measurement principle: After leveling with a spirit level, mark the horizontal position on the protractor 18. According to the forward slip angle measured in advance, adjust the length of the screw 12 through the adjusting rod 11 to control the angle of the installation base. When it is adjusted to the corresponding angle, the sensor inclination angle can be considered to be the same as the forward slip angle. Fix the adjusting rod 11 with a nut to complete the sensor installation. Remove the goniometer and install a shell on the outside of the special bracket for sensor installation for protection.

[0029] The key to solving the problem of scraper conveyor sliding is to promptly determine that the difference between the inclination angle of the scraper conveyor and the inclination angle of the support base is greater than the set value, and issue a warning to pull back the conveyor and adjust the angle of the scraper conveyor. Therefore, inclination sensors are installed on the scraper conveyor and the support base at the same support, and their signals are transmitted to the electro-hydraulic control support controller, and then uploaded to the main control computer in the control room. The collected inclination data are analyzed by difference. When the scraper conveyor completes the pushing and sliding action, the length of the push rod is about 800mm, and the difference is judged. When it is greater than the set value, it is considered that it is sliding, and a warning message is issued to remind the working face operators to pull back the scraper conveyor in the warning section, return the knife, push the slide again, and take measures to suppress the slide if necessary. When it is less than the set value, it is considered that it has not drifted, and coal can be mined normally, completing the entire warning process.

[0030] Principle of use: It is divided into processes such as data collection, data upload, data analysis and early warning, and coal mining feedback and adjustment.

[0031] The inclination angles of the support base, scraper conveyor and coal mining drum cutting bottom plate have a close time-space relationship. The scraper conveyor is the operating reference plane of the coal mining machine. The roller cuts coal up and down to form a cross-section perpendicular to the scraper conveyor plane. Due to the limited amount of coal mining machine lying on the bottom, the minimum inclination angle of the coal mining machine cutting bottom plate is limited. The scraper conveyor needs to be pushed and slid to reach the position of the bottom plate after the coal mining machine cutting. The support reaches the scraper conveyor position after the support moves. Therefore, the support base, scraper conveyor and coal mining machine drum cutting bottom plate have a lag relationship and a restriction relationship.

[0032] Data collection: The inclination data of the scraper conveyor and the support base can be collected through the installed inclination sensor;

[0033] Data upload: The collected inclination data is uploaded to the electro-hydraulic support controller 1, and then uploaded to the main control computer 2 to complete the inclination data collection and upload;

[0034] Data analysis and early warning: Sort the collected data, use programming to calculate the difference in inclination between the scraper conveyor and the base of the same support, when the scraper conveyor completes the push-slide action, the push rod length is about 800mm, start to judge the difference, when it is greater than the fixed value, it is considered to have drifted, issue an early warning message, and remind the working face operators, through personnel positioning to determine whether there are people working in the section, if there is no one, automatically pull back the scraper conveyor in the early warning section, if there is someone working, manually pull back the scraper conveyor in the early warning section, return the knife, push again, and take measures to suppress slipping when necessary, when it is less than the fixed value, it is considered that it has not drifted, and coal can be mined normally, completing the entire early warning process. Take the ZF8000 / 20 / 38D electro-hydraulic control support and SGZ830 / 800 scraper conveyor used by Sima Coal Company as an example, if the inclination difference is greater than 7°, it is considered to have drifted.

[0035] Coal mining feedback adjustment: issue early warning information to remind working face operators to pull back the scraper conveyor in the early warning section, return the cutter, and push the scraper again. If necessary, take measures to suppress the scraper, so as to avoid the inability to adjust when coal mining enters the next cycle.

[0036] In combination with the existing intelligent equipment of the fully mechanized mining face, the scraper conveyor slipping warning device is innovatively designed, which can realize timely warning of scraper conveyor slipping, avoid the problem from expanding and resulting in the inability to pick the top coal, reduce the damage to equipment components such as the front beam of the coal mining machine drum bracket, avoid the risk of roof collapse, reduce the number of people required for manual measurement and downtime, and improve the production efficiency of the working face. It is particularly suitable for situations where the scraper conveyor angle needs to be frequently adjusted when passing through faults, collapse columns and other geological structures.

Claims

1. A scraper conveyor drift warning device, characterized in that: The invention comprises an electro-hydraulic support controller (1), a main control computer (2), and an inclination sensor 1 (3) and an inclination sensor 2 (4) respectively installed on a support base and a scraper conveyor base at the same support, wherein the output ends of the inclination sensor 1 (3) and the inclination sensor 2 (4) are respectively connected to the input end of the electro-hydraulic support controller (1), and the output end of the electro-hydraulic support controller (1) is connected to the input end of the main control computer (2), the inclination measurement direction of the inclination sensor 1 (3) is parallel to the direction in which the contact surface between the support base and the bottom plate points to the coal wall, and the inclination measurement direction of the inclination sensor 2 (4) is perpendicular to the direction in which the chute middle plate of the scraper conveyor points to the coal wall.

2. A scraper conveyor drift warning device according to claim 1, characterized in that: Every five brackets, a first inclination sensor (3) and a second inclination sensor (4) are respectively installed on the same bracket.

3. The scraper conveyor drift warning device according to claim 1 is characterized by: The second inclination sensor (4) is connected to the scraper conveyor via a mounting bracket, the mounting bracket comprising an L-shaped bracket (5) and a sensor mounting base (6), the L-shaped bracket (5) being provided with a mounting hole corresponding to the scraper conveyor, the end of the short side of the L-shaped bracket (5) being connected to one end of the sensor mounting base (6) via a hinge, the hinge being provided with a positioning hole (7), the sensor mounting base (6) being provided with a mounting hole corresponding to the second inclination sensor (4), and a level (8) being vertically provided on the outer side of the sensor mounting base (6).

4. A scraper conveyor drift warning device according to claim 3, characterized in that: The inner sides of the L-shaped bracket (5) and the sensor mounting base (6) are respectively provided with a first connecting ear (9) and a second connecting ear (10); the first connecting ear (9) is connected to an adjusting rod (11); the second connecting ear (10) is connected to a screw rod (12); one end of the screw rod (12) extends into the adjusting rod (11) and is fixed by a bolt.

5. A scraper conveyor drift warning device according to claim 4, characterized in that: A second positioning hole (13) is provided at the bottom of the L-shaped bracket (5), and a positioning line (14) is provided at the bottom of the sensor mounting base (6).

6. A scraper conveyor drift warning device according to claim 5, characterized in that: The mounting bracket is also provided with a separate goniometer, which comprises a side bar 1 (15) and a side bar 2 (16), one end of the side bar 1 (15) is connected to one end of the side bar 2 (16), and the connecting end is provided with an opening 1 (17), the other ends of the side bar 1 (15) and the side bar 2 (16) are connected to a protractor (18) with a scale, and the connecting end of the side bar 1 (15) and the protractor (18) is provided with an opening 2 (19), and the opening 1 (17) and the opening 2 (19) are respectively connected to the positioning hole 1 (7) and the positioning hole 2 (13).

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