Scraper conveyor upward-moving and downward-sliding control device and control method

Abstract

The invention provides a device and method for controlling upward sliding and downward sliding of a scraper conveyor. The device comprises the scraper conveyor, a controller and a distance measuring device. The scraper conveyor is arranged on a coal mining working face; a high roadway is arranged on the higher side of the coal face, a low roadway is arranged on the lower side of the coal face, and the scraper conveyor and the distance measuring device are in communication connection with the controller. The method comprises the following steps: establishing an upward-sliding and downward-sliding measurement datum line, and controlling a distance measuring device to obtain a first distance and a second distance, the first distance being the distance from a conveyor head of the scraper conveyor to the upward-sliding and downward-sliding measurement datum line; the second distance is the distance from the machine head of the conveyor after the first cut of coal is transported to the upward-moving and downward-sliding measurement datum line; according to the second distance and the first distance, calculating a first upward movement amount and a first downward movement amount; and according to the first upward moving amount and the first downward moving amount, the scraper conveyor is controlled to move towards the low roadway or the high roadway, so that the problem that normal stoping is affected by upward moving and downward moving of the scraper conveyor is solved.

Description

Technical Field

[0001] The present application relates to the technical field of conveyors, and in particular to an upward and downward sliding control device and a control method for a scraper conveyor. Background Art

[0002] Scraper conveyor is an important equipment in coal mining face. It is mainly used to transport the coal cut by the coal mining machine out of the coal mining face. It also serves as the walking track of the coal mining machine, the pulling and moving fulcrum of the hydraulic support, etc. The stable operation of the scraper conveyor directly affects the safe production of the coal mining face.

[0003] In the actual production process, the scraper conveyor needs to be pushed by the pushing rod of the hydraulic support so that the scraper conveyor can move forward as a whole. However, due to the inclination angle of the coal mining working face, the uneven bottom plate, the inclination of the hydraulic support and other factors, it is impossible to make further adjustments according to the amount of ups and downslides, which will bring passiveness to the normal advancement of the working face, resulting in the safety exit being not safe enough or causing the coal machine to fail to cut through the coal wall, affecting normal mining. Summary of the invention

[0004] The present application provides a device and method for controlling the upward and downward movement of a scraper conveyor, so as to solve the problem that the upward and downward movement of a scraper conveyor affects normal mining.

[0005] A first aspect of the present application provides a device for controlling upward and downward movement of a scraper conveyor, comprising: a scraper conveyor, a controller and a distance measuring device.

[0006] The scraper conveyor is arranged on the coal mining working surface; a high tunnel is arranged on the higher side of the coal mining working surface, and a low tunnel is arranged on the lower side of the coal mining working surface; the scraper conveyor includes a conveyor head and a conveyor tail, and the distance measuring device includes a distance measuring transmitting unit and a distance measuring receiving unit; the distance measuring transmitting unit is arranged on the conveyor head, and the distance measuring receiving unit is arranged on the low tunnel; the scraper conveyor and the distance measuring device are respectively connected to the controller for communication; the controller is configured as follows:

[0007] Establishing an upward and downward measurement baseline, wherein the upward and downward measurement baseline is located in the centerline direction of the lower laneway;

[0008] Control the distance measuring device to obtain a first distance, where the first distance is the distance from the conveyor head to the upward and downward measurement reference line;

[0009] Controlling the distance measuring device to obtain a second distance, wherein the second distance is the distance from the conveyor head after transporting the first cut of coal to the upward and downward sliding measurement reference line;

[0010] When the second distance is greater than the first distance, calculating a first upward movement amount according to the second distance and the first distance;

[0011] When the first upward movement amount is less than a first preset value, controlling the scraper conveyor to move toward the lower lane;

[0012] When the second distance is smaller than the first distance, calculating a first sliding distance according to the second distance and the first distance;

[0013] When the first sliding amount is less than the first preset value, the scraper conveyor is controlled to move toward the high laneway.

[0014] The distance measuring device is used to measure the distance from the conveyor head to the upward and downward measurement baseline before and after transporting the first cut of coal in sequence to calculate the first upward amount and the first downward amount, and then according to the first upward amount and the first downward amount, the scraper conveyor is controlled to move to the lower tunnel or the higher tunnel to solve the problem of the upward and downward sliding of the scraper conveyor affecting normal mining.

[0015] Optionally, the controller is further configured to:

[0016] Controlling the distance measuring device to obtain a third distance, wherein the third distance is the distance from the conveyor head after transporting the second cut of coal to the upward and downward sliding measurement reference line;

[0017] When the third distance is greater than the second distance, calculating a second upward movement amount according to the third distance and the second distance;

[0018] When the second upward movement amount is less than the first preset value, controlling the scraper conveyor to move toward the lower lane;

[0019] When the third distance is smaller than the second distance, calculating a second sliding distance according to the third distance and the second distance;

[0020] When the second sliding amount is less than the first preset value, the scraper conveyor is controlled to move toward the high laneway.

[0021] The distance measuring device is used to measure the distance from the conveyor head to the upward and downward measurement baseline before and after transporting the second coal, so as to calculate the second upward amount and the second downward amount, and then according to the second upward amount and the second downward amount, the scraper conveyor is controlled to move to the lower tunnel or the higher tunnel to solve the problem of the upward and downward sliding of the scraper conveyor affecting normal mining.

[0022] Optionally, the upward and downward sliding control device of the scraper conveyor further comprises a plurality of single hydraulic pillars and a support base; one end of the single hydraulic pillar is connected to the chute of the scraper conveyor; the other end of the single hydraulic pillar is connected to the support base; the controller is in communication connection with the single hydraulic pillar; the controller is further configured as follows:

[0023] When the first upward movement amount or the second upward movement amount is greater than the first preset value and less than the second preset value, controlling the single hydraulic prop to move toward the lower lane;

[0024] When the first sliding amount or the second sliding amount is greater than the first preset value and less than the second preset value, the single hydraulic support is controlled to move toward the high laneway.

[0025] When the upward and downward movement of the scraper conveyor is greater than the first preset value and less than the second preset value, the upward and downward movement of the scraper conveyor is quickly and effectively controlled by controlling the single hydraulic support to ensure normal advancement of the coal mining face.

[0026] Optionally, the controller is further configured to:

[0027] When the first upward movement amount or the second upward movement amount is greater than the second preset value and less than the third preset value, increasing the propulsion speed of the conveyor head or the conveyor tail close to the side of the lower lane;

[0028] When the first sliding amount or the second sliding amount is greater than the second preset value and less than the third preset value, the propulsion speed of the conveyor head or the conveyor tail close to the side of the high tunnel is increased.

[0029] When the upward and downward sliding amount of the scraper conveyor is greater than the second preset value and less than the third preset value, the upward and downward sliding phenomenon of the scraper conveyor is quickly and effectively controlled by controlling the propulsion speed of the conveyor head or the conveyor tail to ensure the normal advancement of the coal mining working face.

[0030] Optionally, the scraper conveyor upward and downward movement control device further includes an alarm, and the alarm is communicatively connected with the controller; the controller is further configured to:

[0031] When the first upward flow amount or the second upward flow amount is greater than the third preset value, the alarm is controlled to issue a prompt for increasing the number of chutes, so as to increase the number of chutes;

[0032] When the first sliding amount or the second sliding amount is greater than the third preset value, the alarm is controlled to issue a prompt to reduce the chutes, so as to reduce the number of chutes.

[0033] When the upward and downward movement of the scraper conveyor is greater than the third preset value, the alarm is controlled to issue a prompt to increase or decrease the number of chutes, so as to quickly and effectively control the upward and downward movement of the scraper conveyor and ensure the normal advancement of the coal mining face.

[0034] The second aspect of the present application provides a method for controlling the upward and downward movement of a scraper conveyor, which is applied to the device for controlling the upward and downward movement of a scraper conveyor according to the first aspect. The method comprises:

[0035] Establishing an upward and downward measurement baseline, wherein the upward and downward measurement baseline is located in the center line direction of the lower laneway;

[0036] Controlling the distance measuring device to obtain a first distance, wherein the first distance is the distance from the conveyor head to the upward and downward sliding measurement reference line;

[0037] Controlling the distance measuring device to obtain a second distance, wherein the second distance is the distance from the conveyor head after transporting the first cut of coal to the upward and downward sliding measurement reference line;

[0038] When the second distance is greater than the first distance, calculating a first upward movement amount according to the second distance and the first distance;

[0039] When the first upward movement amount is less than a first preset value, the scraper conveyor is controlled to move toward the lower lane;

[0040] When the second distance is smaller than the first distance, calculating a first sliding distance according to the second distance and the first distance;

[0041] When the first sliding amount is less than the first preset value, the scraper conveyor is controlled to move toward the high laneway.

[0042] The distance measuring device is used to measure the distance from the conveyor head to the upward and downward measurement baseline before and after transporting the first cut of coal in sequence to calculate the first upward amount and the first downward amount, and then according to the first upward amount and the first downward amount, the scraper conveyor is controlled to move to a lower tunnel or a higher tunnel to solve the problem of the upward and downward sliding of the scraper conveyor affecting normal mining.

[0043] Optionally, the method further includes:

[0044] Controlling the distance measuring device to obtain a third distance, wherein the third distance is the distance from the conveyor head after transporting the second cut of coal to the upward and downward sliding measurement reference line;

[0045] When the third distance is greater than the second distance, calculating a second upward movement amount according to the third distance and the second distance;

[0046] When the second upward movement amount is less than the first preset value, controlling the scraper conveyor to move toward the lower lane;

[0047] When the third distance is smaller than the second distance, calculating a second sliding distance according to the third distance and the second distance;

[0048] When the second sliding amount is less than the first preset value, the scraper conveyor is controlled to move toward the high laneway.

[0049] The distance measuring device is used to measure the distance from the conveyor head to the upward and downward measurement baseline before and after transporting the second coal, so as to calculate the second upward amount and the second downward amount, and then according to the second upward amount and the second downward amount, the scraper conveyor is controlled to move to a lower tunnel or a higher tunnel to solve the problem of the upward and downward sliding of the scraper conveyor affecting normal mining.

[0050] Optionally, the method further includes:

[0051] When the first upward movement amount or the second upward movement amount is greater than the first preset value and less than the second preset value, the single hydraulic prop is controlled to move toward the lower lane;

[0052] When the first sliding amount or the second sliding amount is greater than the first preset value and less than the second preset value, the single hydraulic support is controlled to move toward the high laneway.

[0053] When the upward and downward movement of the scraper conveyor is greater than the first preset value and less than the second preset value, the upward and downward movement of the scraper conveyor is quickly and effectively controlled by controlling the single hydraulic support to ensure normal advancement of the coal mining face.

[0054] Optionally, the method further includes:

[0055] When the first upward movement amount or the second upward movement amount is greater than the second preset value and less than the third preset value, increasing the propulsion speed of the conveyor head or the conveyor tail close to the side of the lower lane;

[0056] When the first sliding amount or the second sliding amount is greater than the second preset value and less than the third preset value, the propulsion speed of the conveyor head or the conveyor tail close to the side of the high tunnel is increased.

[0057] When the upward and downward sliding amount of the scraper conveyor is greater than the second preset value and less than the third preset value, the upward and downward sliding phenomenon of the scraper conveyor is quickly and effectively controlled by controlling the propulsion speed of the conveyor head or the conveyor tail to ensure the normal advancement of the coal mining working face.

[0058] Optionally, the method further includes:

[0059] When the first upward flow amount or the second upward flow amount is greater than the third preset value, the alarm is controlled to issue a prompt for adding chutes to increase the number of chutes;

[0060] When the first sliding amount or the second sliding amount is greater than the third preset value, the alarm is controlled to issue a prompt to reduce the chutes, so as to reduce the number of chutes.

[0061] When the upward and downward movement of the scraper conveyor is greater than the third preset value, the alarm is controlled to issue a prompt to increase or decrease the number of chutes, so as to quickly and effectively control the upward and downward movement of the scraper conveyor and ensure the normal advancement of the coal mining face.

[0062] It can be seen from the above technical solutions that the present application provides a scraper conveyor upward and downward sliding control device and a control method, and the scraper conveyor upward and downward sliding control device includes: a scraper conveyor, a controller and a distance measuring device. The scraper conveyor is arranged on the coal mining working face; a high tunnel is arranged on the higher side of the coal mining working face, and a low tunnel is arranged on the lower side of the coal mining working face; the scraper conveyor includes a conveyor head and a conveyor tail, and the distance measuring device includes a distance measuring transmitting unit and a distance measuring receiving unit; the distance measuring transmitting unit is arranged on the conveyor head, and the distance measuring receiving unit is arranged on the low tunnel; the scraper conveyor and the distance measuring device are respectively connected to the controller in communication; by establishing an up-and-downward measurement baseline, the distance measuring device is controlled to obtain a first distance and a second distance, the first distance being the distance from the conveyor head to the up-and-downward measurement baseline; the second distance being the distance from the conveyor head to the up-and-downward measurement baseline after transporting the first cut coal; according to the second distance and the first distance, the first up-and-down amount and the first down-and-down amount are calculated; according to the first up-and-down amount and the first down-and-down amount, the scraper conveyor is controlled to move to the low tunnel or the high tunnel to solve the problem that the up-and-downward movement of the scraper conveyor affects normal mining. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0064] Figure 1 This is a schematic diagram of the structure of the upward and downward sliding control device for a scraper conveyor according to an embodiment of the present application;

[0065] Figure 2This is a schematic flow chart of the upward and downward sliding control method of a scraper conveyor according to an embodiment of the present application;

[0066] Figure 3 It is a flow chart of the case where the upward and downward sliding amount in the upward and downward sliding control method of the scraper conveyor described in the embodiment of the present application is greater than the first preset value and less than the second preset value;

[0067] Figure 4 It is a flow chart of the case where the upward and downward sliding amount in the upward and downward sliding control method of the scraper conveyor described in the embodiment of the present application is greater than the second preset value and less than the third preset value;

[0068] Figure 5 This is a flow chart of the case where the upward and downward sliding amount in the upward and downward sliding control method of the scraper conveyor described in an embodiment of the present application is greater than the third preset value.

[0069] Illustration Description:

[0070] Among them, 1-scraper conveyor; 10-single hydraulic support; 2-lower tunnel; 3-conveyor head; 4-conveyor tail; 5-upward and downward sliding measurement reference line; 6-high tunnel. DETAILED DESCRIPTION

[0071] The following embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following embodiments do not represent all implementations consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application as detailed in the claims.

[0072] Scraper conveyor is an important equipment in coal mining face. It is mainly used to transport the coal cut by the coal mining machine out of the coal mining face. It also serves as the walking track of the coal mining machine, the pulling and moving fulcrum of the hydraulic support, etc. The stable operation of the scraper conveyor directly affects the safe production of the coal mining face.

[0073] In the actual production process, the scraper conveyor needs to be pushed by the pushing rod of the hydraulic support so that the scraper conveyor can move forward as a whole. However, due to the inclination angle of the coal mining working face, the uneven bottom plate, the inclination of the hydraulic support and other factors, it is impossible to make further adjustments according to the amount of ups and downslides, which will bring passiveness to the normal advancement of the working face, resulting in the safety exit being not safe enough or causing the coal machine to fail to cut through the coal wall, affecting normal mining.

[0074] To solve the problem of the scraper conveyor sliding up and down and affecting normal mining, refer to Figure 1 , Figure 1It is a structural schematic diagram of a scraper conveyor upward and downward control device. Some embodiments of the present application provide a scraper conveyor upward and downward control device, including: a scraper conveyor 1, a controller and a distance measuring device.

[0075] The scraper conveyor 1 is arranged on the coal mining working surface; a high tunnel 6 is arranged on the higher side of the coal mining working surface, and a low tunnel 2 is arranged on the lower side of the coal mining working surface; the scraper conveyor 1 includes a conveyor head 3 and a conveyor tail 4; the distance measuring device includes a distance measuring transmitting unit and a distance measuring receiving unit; the distance measuring transmitting unit is arranged on the conveyor head 3, and the distance measuring receiving unit is arranged on the low tunnel 2; the scraper conveyor 1 and the distance measuring device are respectively connected to the controller for communication; the controller is configured as follows:

[0076] Establishing an upward and downward measurement reference line 5, wherein the upward and downward measurement reference line 5 is located in the center line direction of the lower tunnel 2;

[0077] Control the distance measuring device to obtain a first distance, where the first distance is the distance from the conveyor head 3 to the upward and downward measurement reference line 5;

[0078] Control the distance measuring device to obtain a second distance, where the second distance is the distance from the conveyor head 3 after transporting the first cut of coal to the upward and downward measurement reference line 5;

[0079] When the second distance is greater than the first distance, calculating a first upward movement amount according to the second distance and the first distance;

[0080] When the first upward movement amount is less than a first preset value, the scraper conveyor 1 is controlled to move toward the lower lane 2;

[0081] When the second distance is smaller than the first distance, calculating a first sliding distance according to the second distance and the first distance;

[0082] When the first sliding amount is less than the first preset value, the scraper conveyor 1 is controlled to move toward the high tunnel 6 .

[0083] It should be understood that one cut of coal is the amount of coal collected by the coal mining machine in a complete cutting operation at the coal mining face. The distance moved by the scraper conveyor 1 is the first upward movement or the first downward movement. The controller can be a single-chip microcomputer. The conveyor head 3 and the conveyor tail 4 of the scraper conveyor 1 are both detachably connected with a push-pull frame, and the push-pull frame is communicatively connected to the controller. The protruding ears of the push-pull frame are "L" shaped, and are hung on the conveyor head 3 or the conveyor tail 4 when it needs to be moved, so as to move the scraper conveyor 1. In some other embodiments, the scraper conveyor 1 can be moved by manually pushing or pulling in one direction.

[0084] The distance measuring device is used to measure the distance from the conveyor head 3 to the up and down sliding measurement baseline 5 before and after transporting the first coal, so as to calculate the first up and down sliding amount, and then according to the first up and down sliding amount, the scraper conveyor 1 is controlled to move to the lower tunnel 2 or the high tunnel 6 to solve the problem of the up and down sliding of the scraper conveyor 1 affecting normal mining.

[0085] In some embodiments, the controller is further configured to:

[0086] Control the distance measuring device to obtain a third distance, wherein the third distance is the distance from the conveyor head 3 after transporting the second cut coal to the upward and downward sliding measurement reference line 5;

[0087] When the third distance is greater than the second distance, calculating a second upward movement amount according to the third distance and the second distance;

[0088] When the second upward movement amount is less than the first preset value, the scraper conveyor 1 is controlled to move toward the lower lane 2;

[0089] When the third distance is smaller than the second distance, calculating a second sliding distance according to the third distance and the second distance;

[0090] When the second sliding amount is less than the first preset value, the scraper conveyor 1 is controlled to move toward the high tunnel 6 .

[0091] It should be understood that the distance moved by the scraper conveyor 1 is the second upward movement amount or the second downward movement amount.

[0092] The distance measuring device is used to measure the distance from the conveyor head 3 to the up and down measurement baseline 5 before and after transporting the second coal, so as to calculate the second up and down amount, and then control the scraper conveyor 1 to move to the lower tunnel 2 or the higher tunnel 6 according to the second up and down amount, so as to solve the problem that the scraper conveyor 1 up and down affects the normal mining.

[0093] By analogy, the upward and downward displacement can be measured and calculated before and after each cut of coal is transported, so as to control the movement of the scraper conveyor 1 towards the lower roadway 2 or the upper roadway 6.

[0094] In some embodiments, the upward and downward displacement control device of the scraper conveyor further includes a plurality of single hydraulic props 10 and a support base; one end of the single hydraulic prop 10 is connected to the chute of the scraper conveyor 1; the other end of the single hydraulic prop 10 is connected to the support base; the controller is communicatively connected to the single hydraulic prop 10; the controller is further configured to:

[0095] When the first upward displacement or the second upward displacement is greater than the first preset value and less than the second preset value, control the single hydraulic prop 10 to move towards the lower roadway 2;

[0096] When the first downward displacement or the second downward displacement is greater than the first preset value and less than the second preset value, control the single hydraulic prop 10 to move towards the lower roadway 2.

[0097] It should be understood that the movement direction of the single hydraulic prop 10 can be towards the lower roadway 2 or the upper roadway 6. The number of the single hydraulic props 10 is determined according to the inclined length and angle of the working face, and the number of the single hydraulic props 10 is 0 < a < n, where n is a natural number greater than 1. The angle between the single hydraulic prop 10 and the scraper conveyor 1 is 0 < β < 90° to ensure safe operation.

[0098] When the upward and downward displacement of the scraper conveyor 1 is greater than the first preset value and less than the second preset value, the upward and downward displacement of the scraper conveyor 1 is quickly and effectively controlled by controlling the single hydraulic prop 10 to ensure the normal advancement of the coal mining face.

[0099] In some embodiments, the controller is further configured to:

[0100] When the first upward displacement or the second upward displacement is greater than the second preset value and less than the third preset value, increase the advancing speed of the conveyor head 3 or the conveyor tail 4 near the lower roadway 2;

[0101] When the first downward displacement or the second downward displacement is greater than the second preset value and less than the third preset value, increase the advancing speed of the conveyor head 3 or the conveyor tail 4 near the upper roadway 6.

[0102] It should be understood that the conveyor head 3 and the conveyor tail 4 are both provided with a speed regulating motor, and the speed regulating motor is communicatively connected with the controller. When the scraper conveyor 1 moves upward, the conveyor head 3 or the conveyor tail 4 near the side of the high roadway 6 is driven at a speed of 1:n to cut coal, where n is a natural number greater than 1, so as to promote the scraper conveyor 1 to gradually slide down to achieve a reasonable coal discharge space. When the scraper conveyor 1 slides down, the overlap distance between the scraper conveyor 1 and the transfer machine is too large, and there is no coal discharge space. The conveyor head 3 or the conveyor tail 4 near the side of the high roadway 6 is driven at a speed of 1:n to cut coal, where n is a natural number greater than 1. So as to promote the scraper conveyor 1 to move upward to achieve a reasonable coal discharge space.

[0103] When the upward and downward sliding amount of the scraper conveyor 1 is greater than the second preset value and less than the third preset value, the propulsion speed of the conveyor head 3 or the conveyor tail 4 is controlled to quickly and effectively control the upward and downward sliding phenomenon of the scraper conveyor 1 to ensure the normal advancement of the coal mining working face.

[0104] In some embodiments, the scraper conveyor upward and downward control device further includes an alarm, and the alarm is communicatively connected to the controller; the controller is further configured to:

[0105] When the first upward flow amount or the second upward flow amount is greater than the third preset value, the alarm is controlled to issue a prompt for increasing the number of chutes, so as to increase the number of chutes;

[0106] When the first sliding amount or the second sliding amount is greater than the third preset value, the alarm is controlled to issue a prompt to reduce the chutes, so as to reduce the number of chutes.

[0107] It should be understood that when the ups and downslope of the scraper conveyor 1 is greater than the third preset value, it indicates that the working face is fluctuating greatly. By controlling the alarm to issue a prompt to increase or decrease the number of chutes, the ups and downslope of the scraper conveyor 1 can be quickly and effectively controlled to ensure the normal advancement of the coal mining working face.

[0108] Some embodiments of the present application also provide a method for controlling the upward and downward movement of a scraper conveyor, which is applied to the upward and downward movement control device of the scraper conveyor described in the above embodiment, see Figure 2 , Figure 2 The present invention is a flow chart of a method for controlling the upward and downward movement of a scraper conveyor, the method comprising:

[0109] S110: Establish an up-and-downward measurement reference line 5 , wherein the up-and-downward measurement reference line 5 is located in the center line direction of the lower tunnel 2 .

[0110] S120: Control the distance measuring device to obtain a first distance, where the first distance is the distance from the conveyor head 3 to the upward and downward sliding measurement reference line 5.

[0111] S130: Control the distance measuring device to obtain a second distance, where the second distance is the distance from the conveyor head 3 after transporting the first cut of coal to the upward and downward sliding measurement reference line 5.

[0112] S140: Compare the second distance with the first distance.

[0113] S150: When the second distance is greater than the first distance, a first upward movement amount is calculated according to the second distance and the first distance.

[0114] S160: When the first upward movement amount is less than a first preset value, the scraper conveyor 1 is controlled to move toward the lower tunnel 2.

[0115] S170: When the second distance is smaller than the first distance, calculating a first sliding distance according to the second distance and the first distance.

[0116] S180: When the first sliding amount is less than the first preset value, the scraper conveyor 1 is controlled to move toward the high tunnel 6.

[0117] It should be understood that, in some other embodiments, the up-and-down measurement reference line 5 may also be located in the center line direction of the high tunnel 6 .

[0118] The distance measuring device is used to measure the distance from the conveyor head 3 to the up and down measurement baseline 5 before and after transporting the first coal, so as to calculate the first up movement and the first down movement, and then control the scraper conveyor 1 to move to the lower tunnel 2 or the higher tunnel 6 according to the first up movement and the first down movement, so as to solve the problem that the up and down movement of the scraper conveyor 1 affects the normal mining.

[0119] In some embodiments, see again Figure 2 , the method further comprises:

[0120] S210: Control the distance measuring device to obtain a third distance, where the third distance is the distance from the conveyor head 3 after transporting the second cut of coal to the upward and downward sliding measurement reference line 5.

[0121] S220: Compare the third distance and the second distance.

[0122] S230: When the third distance is greater than the second distance, calculating a second upward movement amount according to the third distance and the second distance.

[0123] S240: When the second upward movement amount is less than the first preset value, the scraper conveyor 1 is controlled to move toward the lower tunnel 2.

[0124] S250: When the third distance is smaller than the second distance, calculating a second sliding distance according to the third distance and the second distance.

[0125] S260: When the second sliding amount is less than the first preset value, the scraper conveyor 1 is controlled to move toward the high tunnel 6.

[0126] The distance measuring device is used to measure the distance from the conveyor head 3 to the up and down sliding measurement baseline 5 before and after transporting the second coal, so as to calculate the second up and down sliding amount, and then according to the second up and down sliding amount, the scraper conveyor 1 is controlled to move to the lower tunnel 2 or the higher tunnel 6 to solve the problem of the up and down sliding of the scraper conveyor 1 affecting the normal mining.

[0127] In some embodiments, see Figure 3 , Figure 3 The present invention is a flow chart of a method for controlling upward and downward movement of a scraper conveyor when the upward and downward movement amount is greater than a first preset value and less than a second preset value, and the method further includes:

[0128] S310: When the first upward movement amount or the second upward movement amount is greater than the first preset value and less than the second preset value, controlling the single hydraulic prop 10 to move toward the lower lane 2;

[0129] S320: When the first sliding amount or the second sliding amount is greater than the first preset value and less than the second preset value, the single hydraulic support 10 is controlled to move toward the high tunnel 6 .

[0130] When the upward and downward movement of the scraper conveyor 1 is greater than the first preset value and less than the second preset value, the upward and downward movement of the scraper conveyor 1 is quickly and effectively controlled by controlling the single hydraulic support 10 to ensure normal advancement of the coal mining face.

[0131] In some embodiments, see Figure 4 , Figure 4 This is a flow chart of a method for controlling upward and downward movement of a scraper conveyor when the upward and downward movement amount is greater than a second preset value and less than a third preset value, the method further comprising:

[0132] S410: When the first upward movement amount or the second upward movement amount is greater than the second preset value and less than the third preset value, increasing the propulsion speed of the conveyor head 3 or the conveyor tail 4 close to the side of the lower lane 2;

[0133] S420: When the first sliding amount or the second sliding amount is greater than the second preset value and less than the third preset value, the propulsion speed of the conveyor head 3 or the conveyor tail 4 close to the side of the high tunnel 6 is increased.

[0134] When the upward and downward sliding amount of the scraper conveyor 1 is greater than the second preset value and less than the third preset value, the propulsion speed of the conveyor head 3 or the conveyor tail 4 is controlled to quickly and effectively control the upward and downward sliding phenomenon of the scraper conveyor 1 to ensure the normal advancement of the coal mining working face.

[0135] In some embodiments, see Figure 5 , Figure 5 This is a flow chart of a method for controlling upward and downward movement of a scraper conveyor when the upward and downward movement amount is greater than a third preset value, and the method further includes:

[0136] S510: When the first upward flow amount or the second upward flow amount is greater than the third preset value, the alarm is controlled to issue a prompt for adding chutes to increase the number of chutes;

[0137] S520: When the first sliding amount or the second sliding amount is greater than the third preset value, the alarm is controlled to issue a prompt to reduce the number of chutes to reduce the number of chutes.

[0138] When the upward and downward movement of the scraper conveyor 1 is greater than the third preset value, the alarm is controlled to issue a prompt to increase or decrease the number of chutes, so as to quickly and effectively control the upward and downward movement of the scraper conveyor 1 and ensure the normal advancement of the coal mining face.

[0139] It can be seen from the above technical solutions that the embodiment of the present application provides a device and method for controlling the upward and downward movement of a scraper conveyor. The device and method for controlling the upward and downward movement of a scraper conveyor include: a scraper conveyor 1, a controller and a distance measuring device. The scraper conveyor 1 is arranged on a coal mining face; a high tunnel 6 is provided on the higher side of the coal mining face, and a low tunnel 2 is provided on the lower side of the coal mining face. The scraper conveyor 1 includes a conveyor head 3 and a conveyor tail 4. The distance measuring device includes a distance measuring transmitting unit and a distance measuring receiving unit; the distance measuring transmitting unit is provided on the conveyor head 3, and the distance measuring receiving unit is provided on the low tunnel 2; the scraper conveyor 1 and the distance measuring device are respectively connected to the controller for communication; by establishing an upward and downward movement measurement reference line 5, the controller The distance measuring device obtains a first distance and a second distance, wherein the first distance is the distance from the conveyor head 3 to the up-and-down sliding measurement baseline 5; the second distance is the distance from the conveyor head 3 to the up-and-down sliding measurement baseline 5 after transporting the first cut of coal; the first up-and-down amount and the first down-and-down amount are calculated according to the second distance and the first distance; and the scraper conveyor 1 is controlled to move toward the lower tunnel 2 or the higher tunnel 6 according to the first up-and-down amount, so as to solve the problem that the up-and-down sliding of the scraper conveyor 1 affects normal mining.

[0140] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without creative work belong to the protection scope of this application.

Claims

1. A scraper conveyor upward and downward control device, characterized in that: include: Scraper conveyor (1), controller and distance measuring device; The scraper conveyor (1) is arranged on a coal mining working surface; a high tunnel (6) is arranged on a higher side of the coal mining working surface, and a low tunnel (2) is arranged on a lower side of the coal mining working surface; the scraper conveyor (1) comprises a conveyor head (3) and a conveyor tail (4); the distance measuring device comprises a distance measuring transmitting unit and a distance measuring receiving unit; the distance measuring transmitting unit is arranged on the conveyor head (3), and the distance measuring receiving unit is arranged on the low tunnel (2); the scraper conveyor (1) and the distance measuring device are respectively connected to the controller for communication; the controller is configured as follows: Establishing an upward and downward measurement reference line (5), wherein the upward and downward measurement reference line (5) is located in the center line direction of the lower tunnel (2); Controlling the distance measuring device to obtain a first distance, wherein the first distance is the distance from the conveyor head (3) to the upward and downward sliding measurement reference line (5); Controlling the distance measuring device to obtain a second distance, wherein the second distance is the distance from the conveyor head (3) after transporting the first cut of coal to the upward and downward sliding measurement reference line (5); When the second distance is greater than the first distance, calculating a first upward movement amount according to the second distance and the first distance; When the first upward movement amount is less than a first preset value, the scraper conveyor (1) is controlled to move toward the lower lane (2); When the second distance is smaller than the first distance, calculating a first sliding distance according to the second distance and the first distance; When the first downward sliding amount is less than the first preset value, the scraper conveyor (1) is controlled to move towards the high lane (6).

2. The upward and downward sliding control device of a scraper conveyor according to claim 1 is characterized in that: The controller is also configured to: Controlling the distance measuring device to obtain a third distance, wherein the third distance is the distance from the conveyor head (3) after transporting the second cut of coal to the upward and downward sliding measurement reference line (5); When the third distance is greater than the second distance, calculating a second upward movement amount according to the third distance and the second distance; When the second upward movement amount is less than the first preset value, the scraper conveyor (1) is controlled to move toward the lower lane (2); When the third distance is smaller than the second distance, calculating a second sliding distance according to the third distance and the second distance; When the second downward sliding amount is less than the first preset value, the scraper conveyor (1) is controlled to move towards the high laneway (6).

3. The upward and downward sliding control device of a scraper conveyor according to claim 2 is characterized in that: It also comprises a plurality of single hydraulic props (10) and a support base; one end of the single hydraulic prop (10) is connected to the chute of the scraper conveyor (1); the other end of the single hydraulic prop (10) is connected to the support base; the controller is in communication connection with the single hydraulic prop (10); the controller is further configured as follows: When the first upward movement amount or the second upward movement amount is greater than the first preset value and less than the second preset value, the single hydraulic support (10) is controlled to move toward the lower lane (2); When the first sliding amount or the second sliding amount is greater than the first preset value and less than the second preset value, the single hydraulic support (10) is controlled to move toward the high laneway (6).

4. The upward and downward sliding control device of a scraper conveyor according to claim 3 is characterized in that: The controller is also configured to: When the first upward movement amount or the second upward movement amount is greater than the second preset value and less than the third preset value, the propulsion speed of the conveyor head (3) or the conveyor tail (4) close to the side of the lower lane (2) is increased; When the first sliding amount or the second sliding amount is greater than the second preset value and less than the third preset value, the propulsion speed of the conveyor head (3) or the conveyor tail (4) close to the side of the high tunnel (6) is increased.

5. The upward and downward sliding control device of a scraper conveyor according to claim 4, characterized in that: Also includes an alarm, the alarm is communicatively connected to the controller; the controller is also configured to: When the first upward flow amount or the second upward flow amount is greater than the third preset value, the alarm is controlled to issue a prompt for increasing the number of chutes, so as to increase the number of chutes; When the first sliding amount or the second sliding amount is greater than the third preset value, the alarm is controlled to issue a prompt to reduce the chutes, so as to reduce the number of chutes.

6. A method for controlling the upward and downward movement of a scraper conveyor, characterized in that: The method for controlling the upward and downward movement of a scraper conveyor according to any one of claims 1 to 5 comprises: Establishing an upward and downward measurement reference line (5), wherein the upward and downward measurement reference line (5) is located in the center line direction of the lower laneway (2); Controlling the distance measuring device to obtain a first distance, wherein the first distance is the distance from the conveyor head (3) to the upward and downward sliding measurement reference line (5); Controlling the distance measuring device to obtain a second distance, wherein the second distance is the distance from the conveyor head (3) after transporting the first cut of coal to the upward and downward sliding measurement reference line (5); When the second distance is greater than the first distance, calculating a first upward movement amount according to the second distance and the first distance; When the first upward movement amount is less than a first preset value, the scraper conveyor (1) is controlled to move toward the lower lane (2); When the second distance is smaller than the first distance, calculating a first sliding distance according to the second distance and the first distance; When the first downward sliding amount is less than the first preset value, the scraper conveyor (1) is controlled to move towards the high laneway (6).

7. The method for controlling the upward and downward movement of a scraper conveyor according to claim 6, characterized in that: The method further comprises: Controlling the distance measuring device to obtain a third distance, wherein the third distance is the distance from the conveyor head (3) after transporting the second cut of coal to the upward and downward sliding measurement reference line (5); When the third distance is greater than the second distance, calculating a second upward movement amount according to the third distance and the second distance; When the second upward movement amount is less than the first preset value, the scraper conveyor (1) is controlled to move toward the lower lane (2); When the third distance is smaller than the second distance, calculating a second sliding distance according to the third distance and the second distance; When the second downward sliding amount is less than the first preset value, the scraper conveyor (1) is controlled to move towards the high laneway (6).

8. The method for controlling the upward and downward movement of a scraper conveyor according to claim 7, characterized in that: The method further comprises: When the first upward movement amount or the second upward movement amount is greater than the first preset value and less than the second preset value, controlling the single hydraulic support (10) to move toward the lower laneway (2); When the first sliding amount or the second sliding amount is greater than the first preset value and less than the second preset value, the single hydraulic support (10) is controlled to move toward the high laneway (6).

9. The method for controlling the upward and downward movement of a scraper conveyor according to claim 8, characterized in that: The method further comprises: When the first upward movement amount or the second upward movement amount is greater than the second preset value and less than a third preset value, the propulsion speed of the conveyor head (3) or the conveyor tail (4) close to the side of the lower lane (2) is increased; When the first sliding amount or the second sliding amount is greater than the second preset value and less than the third preset value, the propulsion speed of the conveyor head (3) or the conveyor tail (4) close to the side of the high tunnel (6) is increased.

10. The method for controlling the upward and downward movement of a scraper conveyor according to claim 9, characterized in that: The method further comprises: When the first upward flow amount or the second upward flow amount is greater than the third preset value, the alarm is controlled to issue a prompt for adding chutes to increase the number of chutes; When the first sliding amount or the second sliding amount is greater than the third preset value, the alarm is controlled to issue a prompt to reduce the chutes, thereby reducing the number of chutes.

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