Parallelism detection device for split middle trough of scraper conveyor

Abstract

The application discloses a parallelism detection device for a split middle trough of a scraper conveyor, and relates to the technical field of middle trough levelness detection. The device comprises a connecting rod, a flexible belt, a refracting plate and a detection device. When the middle trough has a horizontal angle, a pitch angle and a roll angle posture offset, the first angle of the optical fiber triangle is synchronously changed through the transmission plate, the first calculation unit inversely deduces the offset data of the middle trough in the horizontal angle and the pitch angle posture through the first angle of the optical fiber triangle, the second angle of the laser beam triangle is synchronously changed through the deflection of the refracting plate, and the second calculation unit calculates the offset data of the roll angle posture of the middle trough through the second angle of the laser beam triangle. Therefore, the posture of the middle trough can be corrected according to the data by the staff.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of middle trough level detection, and particularly relates to a parallelism detection device for split middle troughs of a scraper conveyor. BACKGROUND

[0002] The core function of the scraper conveyor is to use the scraper chain to pull the scraper to continuously convey the bulk materials such as coal and ore in the chute, and it is the core conveying equipment in the mining and building material industries.

[0003] The scraper conveyor is mainly composed of a head, multiple split middle troughs and a tail. In long-term operation, the middle troughs are easily deformed in posture due to various factors, such as unstable foundation or support, ground settlement, deformation of the roadway, impact of the materials and equipment, uneven tension of the scraper chain, aging damage of the structural parts, deformation of the dumbbell pin for connecting the middle troughs, and loss of the fixing ability of the posture of the middle troughs. The above factors will cause the independent horizontal angle, pitch angle and roll angle deviation of each middle trough.

[0004] The posture deviation of the middle troughs will increase the friction between the scraper chain and the sidewall and the bottom plate of the trough, causing the risk of chain jamming, chain jumping and even chain breakage, and causing the material conveying path to deviate, which is easy to accumulate and leak at the deviation position, increasing the cleaning workload, and possibly triggering equipment shutdown due to material blockage, directly affecting the safety and normal production of the fully mechanized working face.

[0005] Therefore, the parallelism detection device for split middle troughs of a scraper conveyor is designed to solve the above problems. SUMMARY

[0006] In view of the above situation, in order to overcome the defects of the prior art, the parallelism detection device for split middle troughs of a scraper conveyor is provided, which can realize dynamic monitoring of the running state of the middle trough by periodically detecting the three core posture data of the horizontal angle, the pitch angle and the roll angle of the middle trough, and accurately capture the posture deviation of the middle trough. According to the specific deviation values of the three angles, a targeted correction scheme is formulated to timely adjust the posture of the middle trough and avoid equipment failure caused by abnormal posture.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0008] A parallelism detection device for split middle troughs of a scraper conveyor, comprising: a connecting rod, a flexible belt, a refracting plate and a detection device.

[0009] The flexible strip is laid above multiple central grooves; multiple connecting rods are set at the ends of the central grooves and connected to the flexible strip; there are multiple refractive plates, which are respectively set at both ends of the top surface of multiple central grooves; the detection device is set above the central grooves and moves horizontally along the central grooves.

[0010] The detection device includes: a housing, an optical fiber, a limiting shaft assembly, a transmission plate, a laser emitting device, an imaging device, and a data processing unit. The lower end of the housing is open, and the optical fiber on one side wall is wound into a triangle by the limiting shaft assembly, which includes a displacement wheel, a positioning wheel, and a tensioning wheel. The lower end of the displacement wheel is connected to the transmission plate, which is slidably connected to the housing and can slide horizontally and vertically. The lower end of the transmission plate is respectively attached to the top surface of the flexible belt and one side wall. One end of the optical fiber is connected to the laser emitting device, and the other end is bent downward and fixed. The movement path of the laser beam is: transmitted along the optical fiber, then tilted downward from the end of the optical fiber, and refracted twice by the refraction plate, thereby forming an optical fiber triangle and a laser beam triangle. The imaging device images the optical fiber triangle and the laser beam triangle, and the data processing unit processes the imaging data to obtain deviation data of the horizontal angle, pitch angle, and roll angle.

[0011] In one embodiment, the detection device detects the central trough when it moves to the end of the central trough.

[0012] In one embodiment, an electric slide rail is laid on the ground on one side of the central groove. The electric slide rail is parallel to the central groove. A support column is installed on the slider of the electric slide rail. The detection device is installed on the support column. The detection device is connected to a battery, which supplies power to the detection device.

[0013] In one embodiment, the transmission plate is slidably connected to the slide plate in a vertical direction, and the slide plate is slidably connected to the housing in a horizontal direction.

[0014] In one embodiment, a spring is provided between the slide plate and the housing. The spring is inclined and applies horizontal and vertical forces to the transmission plate, that is, the lower end of the transmission plate applies horizontal and vertical forces to the flexible belt.

[0015] In one embodiment, a control unit is provided inside the housing. The control unit includes a first control switch and a second control switch. The first control switch periodically opens the electric slide rail through a first time-limiting device and stops for a certain period of time when the detection device moves to the end of the middle groove. During this period, the imaging device images the fiber optic triangle and the laser beam triangle. The second control switch periodically opens the imaging device and the laser emitting device through a second time-limiting device, that is, the imaging device and the laser emitting device are turned on when the detection device moves to the end of the middle groove.

[0016] In one embodiment, the data processing unit includes a data storage unit, a data segmentation unit, a first calculation unit, a second calculation unit, and a wireless signal transmission unit. Its workflow is as follows: the data storage unit stores the imaging data captured by the imaging device; the data segmentation unit divides the imaging data into two groups, A and B, along a left-right direction using a dividing line; the first calculation unit calculates the data in group A, using geometric relationships and the angles of the fiber optic triangle to deduce the attitude offset data of the central slot end in the horizontal and pitch angles; the second calculation unit calculates the data in group B, using the angles of the laser beam triangle to calculate the roll angle attitude offset data of the central slot; the first and second calculation units transmit the calculated data to the terminal via the wireless signal transmission unit.

[0017] In one embodiment, since the imaging device sequentially images both ends of the central slot, the wireless signal transmitting unit sends two data to the terminal. These two data together constitute the complete attitude deviation data of the central slot in terms of horizontal angle, pitch angle, and roll angle.

[0018] The beneficial effects of this invention are as follows:

[0019] (1) When the horizontal angle and pitch angle attitude shifts in the middle slot, the first angle of the fiber optic triangle changes synchronously through the transmission plate. The first calculation unit deduces the offset data of the horizontal angle and pitch angle attitude of the middle slot through the first angle of the fiber optic triangle, so that the staff can correct the horizontal angle and pitch angle of the middle slot in time.

[0020] (2) When the rolling angle attitude shifts in the middle groove, the second angle of the laser beam triangle changes synchronously due to the deflection of the refracting plate. The second calculation unit calculates the offset data of the rolling angle attitude of the middle groove through the second angle of the laser beam triangle, so that the staff can correct the rolling angle of the middle groove in time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of one side of the structure of the present invention;

[0023] Figure 3 This is a partial structural diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of one side of the housing of the present invention;

[0025] Figure 5 This is a schematic diagram of the distribution of the limiting shaft group of the present invention;

[0026] Figure 6 This is a schematic diagram of the laser beam movement path of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure on the other side of the casing of the present invention;

[0028] Figure 8 This is a schematic diagram of the spatial position of the dividing line in this invention;

[0029] Figure 9 This is a schematic diagram of the control unit system of the present invention;

[0030] Figure 10 This is a schematic diagram of the data processing unit system of the present invention.

[0031] In the diagram: 1. Connecting rod; 2. Flexible belt; 21. First detection point; 22. Second detection point; 3. Refraction plate; 4. Electric slide rail; 41. Support column; 5. Detection device; 50. Housing; 51. Optical fiber; 52. Limiting shaft assembly; 53. Slide plate; 54. Transmission plate; 55. Laser emitting device; 56. Imaging device; 57. Control unit; 58. Data processing unit; 521. Displacement wheel; 522. Positioning wheel; 523. Tensioning wheel; 531. Spring; 100. Central groove. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0033] Please see Figures 1-2 The present invention provides a parallelism detection device for a split-type central trough of a scraper conveyor, comprising: a connecting rod 1, a flexible belt 2, a refractive plate 3, an electric slide rail 4, and a detection device 5;

[0034] Please see Figures 1-2 The flexible belt 2 is laid above multiple central troughs 100 and remains parallel to each central trough 100, with both ends extending beyond the ends of the central troughs 100. Multiple connecting rods 1 are vertically fixed to the top surfaces of each central trough 100, the machine head, and the machine tail, thereby fixing the flexible belt 2. Two connecting rods 1 on the top surface of each central trough 100 are respectively installed at both ends of the central trough 100. Their function is that when the central trough 100 exhibits a horizontal or vertical attitude deviation, the connecting rods 1 can drive their connection points with the flexible belt 2 to synchronously generate corresponding attitude deviation changes. The flexible belt 2 has a circular cross-section and a certain degree of elasticity.

[0035] Please see Figure 3 The two connecting rods 1 on the top surface of the central groove 100 and the two connection points of the flexible belt 2 are the first detection point 21 and the second detection point 22, respectively.

[0036] Please seeFigures 1-2 The number of the refractive plates 3 is multiple, and the multiple refractive plates 3 are respectively disposed at both ends of the top surface of multiple central grooves 100. The refractive plates 3 are parallel to each other with the top surface of the central grooves 100. When the central grooves 100 roll in the horizontal direction, the refractive plates 3 deflect synchronously.

[0037] Please see Figures 1-2 The electric slide rail 4 is laid on the ground on one side of the central groove 100. The electric slide rail 4 is parallel to the central groove 100. A slider is provided on the electric slide rail 4. The slider is driven by the electric slide rail 4 to move horizontally. A support column 41 is installed on the slider of the electric slide rail 4. The detection device 5 is installed on the support column 41. The detection device 5 is connected to a storage battery, which provides power to the detection device 5.

[0038] Please see Figure 4 The detection device 5 includes: a housing 50, an optical fiber 51, a limiting shaft group 52, a sliding plate 53, a transmission plate 54, a laser emitting device 55, an imaging device 56, a control unit 57, and a data processing unit 58.

[0039] Please see Figures 4-6The lower end of the housing 50 is open. Optical fibers 51 on one vertical wall are arranged in a triangle by a limiting shaft assembly 52. ​​The limiting shaft assembly 52 includes a displacement wheel 521, a positioning wheel 522, and a tensioning wheel 523. The positioning wheel 522 is fixed to the wall of the housing 50, and the tensioning wheel 523 can slide horizontally along the wall of the housing 50. The lower end of the displacement wheel 521 is connected to a transmission plate 54. The housing 50 is provided with a horizontal slide rail. The sliding plate 53 is connected to the horizontal slide rail, allowing the sliding plate 53 to move horizontally. The transmission plate 54 vertically penetrates the sliding plate 53, forming a vertical sliding relationship, allowing the transmission plate 54 to move vertically. This enables the displacement wheel 521 above the transmission plate 54 to move in multiple directions. A spring 531 is provided between the sliding plate 53 and the housing 50. With the help of the spring 531, the lower end of the transmission plate 54 can respectively adhere to the top surface and one side wall of the flexible belt 2. At the same time, the spring 531 applies vertical and horizontal forces to the transmission plate 54, while the flexible belt 2... The function of the flexible band 2 is to guide the lower end of the transmission plate 54 to move to the first detection point 21 and the second detection point 22. The stress of the flexible band 2 is greater than the elastic force of the spring 531. One end of the optical fiber 51 is connected to the emitting end of the laser emitting device 55, and the other end is bent downward and fixed. Based on the total internal reflection characteristic of the laser beam by the optical fiber 51, the optical fiber 51 can firmly trap the laser beam and make it transmit along the path of the optical fiber 51 with almost no loss. The movement path of the laser beam is as follows: the laser beam emitted by the laser emitting device 55 will be transmitted along the optical fiber 51, and then emitted obliquely downward from the other end of the optical fiber 51 and irradiate the refraction plate 3. After secondary refraction by the refraction plate 3, the optical fiber 51 and the laser beam will form an optical fiber triangle and a laser beam triangle, respectively. By detecting the changes in the first angle at the connection between the optical fiber 51 and the displacement wheel 521 in the optical fiber triangle and the second angle of the laser beam refracted by the refraction plate 3 in the laser beam triangle, the attitude deviation data of the central groove 100 in terms of horizontal angle, pitch angle or roll angle can be calculated.

[0040] Please see Figure 7 An imaging device 56, a control unit 57, and a data processing unit 58 are installed on the other side wall of the housing 50. The imaging device 56 is used to take pictures of the fiber triangle and the laser beam triangle at the first detection point 21 and the second detection point 22. The control unit 57 is used to control the electric slide rail 4, the laser emitting device 55, and the imaging device 56 to be turned on periodically. The data processing unit 58 is used to process the imaging data taken by the imaging device 56 to obtain the attitude deviation data of the central groove 100 in terms of horizontal angle, pitch angle, or roll angle.

[0041] Because the light inside the housing 50 is dim, the laser beam emitted by the laser emitting device 55 increases the brightness of the optical fiber 51. After the laser beam is refracted along the refractive plate 3 into the housing 50, the dim environment makes the laser beam more obvious, which makes it easier for the imaging device 56 to capture the optical fiber triangle and the laser beam triangle.

[0042] Please see Figure 9 The control unit 57 includes a first control switch and a second control switch. The first control switch periodically opens the electric slide rail 4 via a first time relay, for example, controlling the electric slide rail 4 to open once every 24 hours, and stops for a certain period of time when the detection device 5 moves to the first detection point 21 and the second detection point 22. During this time, the imaging device 56 images the fiber optic triangle and the laser beam triangle. The second control switch periodically opens the imaging device 56 and the laser emitting device 55 via a second time relay, that is, the imaging device 56 and the laser emitting device 55 are turned on when the detection device 5 moves to the first detection point 21 and the second detection point 22.

[0043] Please see Figure 8 , Figure 10 The data processing unit 58 includes a data storage unit, a data segmentation unit, a first calculation unit, a second calculation unit, and a wireless signal transmission unit. Its workflow is as follows: The data storage unit stores the imaging data captured by the imaging device 56; the data segmentation unit divides the imaging data into two groups, A and B, along a left-right direction using a dividing line; the first calculation unit calculates the data in group A, using geometric relationships (such as trigonometric functions) to deduce the attitude offset data of the end of the central slot 100 in the horizontal and pitch angles using the first angle of the fiber optic triangle; the second calculation unit calculates the data in group B, using geometric analysis logic to calculate the roll angle attitude offset data of the central slot 100 using the second angle of the laser beam triangle. The first and second calculation units transmit the calculated data to the terminal via the wireless signal transmission unit. Since the imaging device 56 sequentially images the first detection point 21 and the second detection point 22, the wireless signal transmission unit sends data to the terminal twice. These two sets of data together constitute the complete attitude deviation data of a single central slot 100 in the horizontal, pitch, and roll angles.

[0044] Working principle of this invention:

[0045] When multiple central slots 100 are being inspected, the electric slide rail 4 drives the inspection device 5 to move. When the inspection device 5 moves to the first inspection point 21 and the second inspection point 22, if the central slot 100 experiences attitude shifts along the horizontal angle, pitch angle, and roll angle, the first inspection point 21 and the refractive plate 3 move synchronously with the central slot 100. The lower end of the transmission plate 54 moves with the flexible belt 2, and the spatial position of the displacement wheel 521 changes synchronously, thereby changing the original angle of the first angle of the fiber optic triangle. The refractive plate 3 deflects with the central slot 100, thereby changing the original angle of the second angle of the laser beam triangle. The imaging data captured by the imaging device 56 is transmitted to the data processing unit 58. The workflow of the data processing unit 58 is as follows:

[0046] S1, the data storage unit is responsible for storing the imaging data captured by the imaging device 56;

[0047] S2. The data segmentation unit divides the imaging data in the data storage unit into two groups, A and B, along the left and right directions using the segmentation lines.

[0048] S3. The first calculation unit calculates the data in group A. The first calculation unit deduces the attitude offset data of the end of the central slot 100 in terms of horizontal and pitch angles by using the first angle of the fiber optic triangle. The second calculation unit calculates the data in group B. The second calculation unit calculates the roll angle attitude offset data of the central slot 100 by using the second angle of the laser beam triangle. The first and second calculation units transmit the calculated data to the terminal through the wireless signal transmission unit. The wireless signal transmission unit sends data to the terminal, and the staff corrects the attitude offset of the central slot 100 by using the terminal data.

Claims

1. A parallelism detection device for a split-type central trough of a scraper conveyor, comprising: The invention comprises a connecting rod (1), a flexible strip (2), a reflector (3), and a detection device (5); characterized in that: the flexible strip (2) is laid above a plurality of central grooves (100); a plurality of connecting rods (1) are set at the ends of the central grooves (100) and connected to the flexible strip (2); the number of reflectors (3) is plurality of, and the plurality of reflectors (3) are respectively set at both ends of the top surface of the plurality of central grooves (100); the detection device (5) is set above the central grooves (100) and moves horizontally along the central grooves (100); The detection device (5) includes: a housing (50), an optical fiber (51), a limiting shaft assembly (52), a transmission plate (54), a laser emitting device (55), an imaging device (56), and a data processing unit (58); the lower end of the housing (50) is open, and the optical fiber (51) on one side wall is wound into a triangle by the limiting shaft assembly (52). The limiting shaft assembly (52) includes: a displacement wheel (521), a positioning wheel (522), and a tensioning wheel (523); the lower end of the displacement wheel (521) is connected to the transmission plate (54), and the transmission plate (54) is slidably connected to the housing (50), which can... The transmission plate (54) slides horizontally and vertically, with its lower end touching the top surface and one side wall of the flexible belt (2), respectively. One end of the optical fiber (51) is connected to the laser emitting device (55), and the other end is bent downward and fixed. The laser beam moves along the optical fiber (51), then tilts downward from the end of the optical fiber (51), and is reflected by the reflector (3) to form an optical fiber triangle and a laser beam triangle. The imaging device (56) images the optical fiber triangle and the laser beam triangle, and the data processing unit (58) processes the imaging data to obtain the deviation data of the horizontal angle, pitch angle and roll angle.

2. The parallelism detection device for a split-type central trough of a scraper conveyor according to claim 1, characterized in that: When the detection device (5) moves to the end of the central groove (100), it detects the central groove (100).

3. The parallelism detection device for a split-type central trough of a scraper conveyor according to claim 1, characterized in that: An electric slide rail (4) is laid on the ground on one side of the central groove (100). The electric slide rail (4) is parallel to the central groove (100). A support column (41) is installed on the slider of the electric slide rail (4). A detection device (5) is installed on the support column (41). The detection device (5) is connected to a battery, which supplies power to the detection device (5).

4. The parallelism detection device for a split-type central trough of a scraper conveyor according to claim 3, characterized in that: The transmission plate (54) and the slide plate (53) are slidably connected in the vertical direction, and the slide plate (53) and the housing (50) are slidably connected in the horizontal direction.

5. The parallelism detection device for a split-type central trough of a scraper conveyor according to claim 4, characterized in that: A spring (531) is provided between the slide plate (53) and the housing (50). The spring (531) is inclined and applies horizontal and vertical forces to the transmission plate (54) through the spring (531). That is, the lower end of the transmission plate (54) applies horizontal and vertical forces to the flexible belt (2).

6. The parallelism detection device for a split-type central trough of a scraper conveyor according to claim 1, characterized in that: The housing (50) is provided with a control unit (57), which includes a first control switch and a second control switch. The first control switch periodically opens the electric slide rail (4) through a first time-limiting device and stops for a certain period of time when the detection device (5) moves to the end of the middle groove (100). During this time, the imaging device (56) images the fiber triangle and the laser beam triangle. The second control switch periodically opens the imaging device (56) and the laser emitting device (55) through a second time-limiting device, that is, the imaging device (56) and the laser emitting device (55) are turned on when the detection device (5) moves to the end of the middle groove (100).

7. The parallelism detection device for a split-type central trough of a scraper conveyor according to claim 6, characterized in that: The data processing unit (58) includes a data storage unit, a data segmentation unit, a first calculation unit, a second calculation unit, and a wireless signal transmission unit. Its workflow is as follows: the data storage unit is responsible for storing the imaging data captured by the imaging device (56); the data segmentation unit divides the imaging data into two groups, A and B, along the left and right directions using a dividing line; the first calculation unit calculates the data of group A; and the first calculation unit, based on geometric relationships, deduces the attitude offset data of the end of the central slot (100) in the horizontal and pitch angles by using the angles of the fiber optic triangle. The second calculation unit calculates the data of group B. The second calculation unit calculates the rolling angle attitude offset data of the central groove (100) by the angle of the laser beam triangle. The first calculation unit and the second calculation unit transmit the calculated data to the terminal through the wireless signal transmission unit.

8. The parallelism detection device for a split-type central trough of a scraper conveyor according to claim 7, characterized in that: Since the imaging device (56) will image both ends of the central slot (100) in sequence, the wireless signal transmission unit will send two data to the terminal. These two data together constitute the complete attitude deviation data of the central slot (100) in the horizontal angle, pitch angle and roll angle.

Images