Edge guard folding and unfolding detection system and method

Abstract

The invention provides a face guard folding and unfolding detection system and method.The system comprises an angle sensor, a distance sensor and an analysis device.The angle sensor is configured and fixed to a preset position point of the connecting position of a face guard and a target beam, and the target beam is selected from a top beam and a telescopic beam; the angle sensor is used for sending collected angle information to the analysis device; the distance sensor is arranged on a preset position point below the top beam and the telescopic beam, and the distance between the distance sensor and the side protection plate in the vertical state meets a preset distance condition; the face guard in the vertical state represents that the face guard and the top beam form a right angle; the distance sensor is used for sending collected distance information to the analysis device; and the analysis device is used for determining the folding and unfolding state of the face guard according to the angle information and the distance information. Compared with other face guard plate position detection methods, the face guard plate position detection method is simple in structure, convenient to install and effective and accurate in detection.

Description

Technical Field

[0001] The invention relates to the technical field of mineral fully-mechanized mining, and in particular to a guard plate retraction and extension detection system and method. Background Art

[0002] The existing guard plate position detection methods all have certain disadvantages: Manual identification can liberate workers from coal mines through remote monitoring, but it still requires manpower and there is a delay in transmission. In the context of intelligence, alternative solutions need to be found; mechanical switches are highly accurate, reliable, and can adapt to harsh environments, but due to physical contact, they are easily damaged and require regular maintenance, and may interfere with other structural parts. In addition, mechanical switches can only obtain whether they are fully retracted, but not real-time positions; Hall proximity switches are non-contact, have a long life and high precision, and can be embedded in support beams to avoid interference with other components, but can only obtain whether they are fully retracted, but not real-time positions; magnetostrictive displacement sensors are highly accurate and protected inside the hydraulic cylinder, but are not easy to repair or replace, and have limitations in underground environments. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a side guard plate retraction and extension detection system and method.

[0004] The present invention provides a guard plate retraction and extension detection system, which is applicable to fully mechanized mining working face support equipment, wherein the fully mechanized mining working face support equipment comprises a top beam, a guard plate and a telescopic beam, and the system comprises an angle sensor, a distance sensor and an analysis device, wherein: The angle sensor is configured and fixed at a preset position point at the connection between the guard plate and the target beam, and the target beam is a beam selected from the top beam and the telescopic beam; the angle sensor is used to send the collected angle information to the analysis device; The distance sensor is arranged at a preset position point below the top beam and the telescopic beam, and the distance between the distance sensor and the guard plate in a vertical state meets a preset distance condition; the guard plate in a vertical state indicates that the guard plate is at a right angle to the top beam; the distance sensor is used to send the collected distance information to the analysis device; The analyzing device is used to determine the retracted or extended state of the side guard plate according to the angle information and the distance information.

[0005] According to a side guard plate retraction and extension detection system provided by the present invention, the analysis device is specifically used for: Determine a first rotation direction and an angle change of the side guard plate according to the angle information; Determining a second rotation direction of the guard plate according to the distance information; When it is determined that the first rotation direction and the second rotation direction are the same, the retracted or extended state of the side guard plate is determined based on the first rotation direction and the angle change.

[0006] According to a guard plate retraction and extension detection system provided by the present invention, the target beam is a telescopic beam, and the guard plate is configured to be connected to the end of the telescopic rod of the telescopic beam through an ear plate by a pin shaft; the ear plate is configured to be fixed on the inner side of the guard plate, and accordingly, the system also includes a first fixing member, and the angle sensor is fixed to a preset position point of the connection area between the guard plate and the target beam through the first fixing member; The first fixing member includes a positioning shell and a connecting member, the positioning shell is fixed to the ear plate, one end of the connecting member is fixed to the telescopic rod, and the other end of the connecting member is connected to the rotating shaft of the angle sensor, and the angle sensor is arranged inside the positioning shell.

[0007] According to a guard plate retraction and extension detection system provided by the present invention, the ear plate includes a first P-type part and a second P-type part, the first P-type part and the second P-type part are arranged side by side with a gap, the end of the telescopic rod is placed in the gap, and is connected to the first P-type part and the second P-type part by a pin shaft; the positioning shell includes an arc plate and an end plate bent into a U-shape by a long strip, the end plate is U-shaped and connected to the arc plate; a through hole is provided on the end plate, the angle sensor is fixed on the inner side of the end plate, and the rotating shaft of the angle sensor extends out of the through hole; the arc plate is fixed on the P-type part.

[0008] According to a guard plate retraction and extension detection system provided by the present invention, the connecting member includes a U-shaped rod and a connecting plate, the U-shaped rod includes a first vertical rod, a connecting rod and a second vertical rod, the end of the first vertical rod is provided with a fixing hole, the fixing hole fixes the rotating shaft of the angle sensor; the end of the second vertical rod is fixed to the connecting plate, and the connecting plate is fixed to the end of the telescopic rod.

[0009] According to a guard plate retraction and extension detection system provided by the present invention, two parallel fixing grooves are arranged on the connecting plate, the connecting plate is fixed to the end of the telescopic rod through a fixing piece and the fixing groove, and the end of the second vertical rod is fixed to the area between the two fixing grooves.

[0010] According to a side guard plate retraction and extension detection system provided by the present invention, a U-shaped convex strip is arranged on the inner side surface of the positioning shell, and the U-shaped convex strip is attached to the edge position of the P-shaped part.

[0011] According to a guard plate retraction and extension detection system provided by the present invention, a threading hole is provided on the arc plate, and the threading hole is used to pass the cable of the angle sensor.

[0012] According to a guard plate retraction and extension detection system provided by the present invention, the distance sensor is arranged on a vertically downward fixing rod on the top beam.

[0013] The present invention also provides a guard plate retraction and extension detection method based on the guard plate retraction and extension detection system, which is applicable to fully-mechanized mining working face support equipment, wherein the fully-mechanized mining working face support equipment comprises a top beam, a guard plate and a telescopic beam, and the system comprises an angle sensor, a distance sensor and an analysis device, including: Get angle information and distance information; The retracted or extended state of the side guard plate is determined according to the angle information and the distance information.

[0014] The present invention provides a guard plate retraction and extension detection system and method, which collects angle information by configuring an angle sensor at the connection between the guard plate and the target beam, and collects distance information by setting a distance sensor under the top beam and the telescopic beam, and determines the retracted and extended state of the guard plate based on the angle information and the distance information. Compared with other guard plate position detection methods, the system and method have a simple structure, easy installation, and effective and accurate detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the side guard plate retraction and extension detection system provided by the present invention.

[0017] Figure 2 The figure is a fixing method diagram of the angle sensor provided by the present invention at the connection between the side guard plate and the telescopic beam.

[0018] Figure 3 It is a detailed diagram of the fixing method of the angle sensor provided by the present invention at the connection between the guard plate and the telescopic beam.

[0019] Figure 4 It is a schematic diagram of the connection between the ear plate and the telescopic rod provided by the present invention.

[0020] Figure 5 It is a structural schematic diagram of the positioning housing provided by the present invention.

[0021] Figure 6It is a structural schematic diagram of the connecting piece provided by the present invention.

[0022] Figure 7 This is a schematic diagram of the location setting of the distance sensor.

[0023] Figure 8 It is a schematic diagram of the data transmission method of the system provided by the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 , the present invention provides a schematic structural diagram of a guard plate retraction and extension detection system, the system is suitable for comprehensive mining working face support equipment, coal mine working face support equipment is a special equipment used to support and protect the comprehensive mining working face top plate and both sides to ensure the safety of the working space and prevent rock from falling or tunnel deformation. The comprehensive mining working face support equipment includes a top beam, a guard plate and a telescopic beam (hydraulically extended and retracted), and the system includes an angle sensor, a distance sensor and an analysis device. The angle sensor is used to send the collected angle information to the analysis device, and the angle information here can correspond to the rotation angle of the guard plate. The distance sensor is used to send the collected distance information to the analysis device, and the distance information here can correspond to the extension and retraction of the guard plate.

[0026] In the present invention, only one angle sensor 11 is needed, because what is detected is the retracted and extended state of the guard plate, that is, the rotation of the guard plate, the top beam, and the telescopic beam is detected. For this reason, the angle sensor is configured and fixed at a preset position point at the connection between the guard plate and the target beam, and the target beam is a beam selected from the top beam and the telescopic beam. In other words, there will be multiple connections between the top beam and the guard plate, the telescopic beam and the guard plate. However, only one angle sensor needs to be installed, so a beam must be determined from multiple top beams and multiple telescopic beams, and this beam is used as the target beam. It should be noted that the angle sensor can detect information that can characterize the rotation angle of the guard plate. For this reason, the angle sensor can be installed at more positions at the connection between the guard plate and the target beam. However, in order to better match the overall structure of the comprehensive mining face support equipment, a better fixed angle sensor position can be preset at the connection between the guard plate and the target beam, and this position is regarded as a preset position point.

[0027] In the present invention, due to the failure of the angle sensor or the detachment during installation, the collected angle information may be inaccurate, which may lead to the misjudgment of the retracted state of the guard plate. For this reason, a distance sensor (that is, a distance measuring sensor) 12 is required, which can assist in characterizing the external release and recovery of the guard plate, that is, the distance information can be synchronized with the angle information in characterizing the retracted state of the guard plate. The distance sensor sends a signal to the guard plate to measure the distance between the guard plate and the distance sensor during the retracted process. For this reason, the distance sensor is set at a preset position point below the top beam and the telescopic beam, and the distance between the distance sensor and the guard plate in a vertical state meets the preset distance condition. Since the distance sensor can receive a limited number of reflected signals, the preset distance condition here is a condition that can detect reflected signals within a certain distance range, and this preset distance condition can be a distance range. The guard plate in the vertical state here represents that the guard plate is at right angles to the top beam.

[0028] In the present invention, the angle sensor collects angle information, and the distance sensor collects distance information. The purpose of collecting the information is to analyze the retracted and extended state of the side guard plate. To this end, an analysis device 13 is required, which can comprehensively analyze the angle information and the distance information to determine the retracted and extended state of the side guard plate.

[0029] The guard plate retraction and extension detection system provided by the present invention collects angle information by configuring an angle sensor at the connection between the guard plate and the target beam, and collects distance information by setting a distance sensor under the top beam and the telescopic beam, and determines the retracted and extended state of the guard plate based on the angle information and the distance information. Compared with other guard plate position detection methods, the system has a simple structure, is easy to install, and has effective and accurate detection.

[0030] In a further system of the above system, the analyzing device is specifically used for: The first rotation direction and angle change of the side guard plate are determined according to the angle information.

[0031] The second rotation direction of the side guard plate is determined according to the distance information.

[0032] When it is determined that the first rotation direction and the second rotation direction are the same, the retracted or extended state of the side guard plate is determined based on the first rotation direction and the angle variation.

[0033] In this regard, it should be noted that due to the failure of the angle sensor or the detachment of the installation, the collected angle information may be inaccurate, which may lead to the misjudgment of the retracted state of the guard plate. For this reason, a distance sensor (that is, a distance measuring sensor) is required. The distance sensor can assist in representing the extension and retraction of the guard plate, that is, the distance information can be synchronized with the angle information in representing the retracted state of the guard plate.

[0034] In the present invention, if the extended state of the guard plate is a clockwise rotation, then the retracted state of the guard plate is a counterclockwise rotation. For this reason, the angle information is analyzed to analyze the rotation direction and angle change of the guard plate. Accordingly, when the guard plate is extended, the distance becomes longer, and when the guard plate is retracted, the distance becomes shorter. If the distance becomes longer, it means clockwise, and the distance becomes shorter, it means counterclockwise. For this reason, the distance information is analyzed to analyze the rotation direction of the guard plate. Since the purpose of analyzing the distance information is to assist in verifying the validity of the angle information. For this reason, here it is only necessary to analyze the rotation direction of the guard plate based on the distance information.

[0035] In a further system of the above systems, see Figure 2 and Figure 3 , the telescopic beam is selected as the target beam, and the side guard plate is configured to be connected to the end 25 of the telescopic rod 22 of the telescopic beam 2 through the ear plate 21 by a pin. The ear plate 21 is configured to be fixed on the inner side of the side guard plate 1. Accordingly, the system also includes a first fixing member, and the angle sensor is fixed to a preset position point in the connection area between the side guard plate 1 and the telescopic beam 2 through the first fixing member.

[0036] The first fixing member includes a positioning shell 23 and a connecting member 24 . The positioning shell 23 is fixed on the ear plate 21 . One end of the connecting member 24 is fixed on the end 25 of the telescopic rod 22 . The other end of the connecting rod 24 is connected to the rotating shaft of the angle sensor. The angle sensor is arranged inside the positioning shell 23 .

[0037] See also Figure 4 The ear plate 21 includes a first P-type member 221 and a second P-type member 222. The first P-type member 221 and the second P-type member 222 are arranged side by side with a gap. The end 25 of the telescopic rod 22 is placed in the gap and is connected to the first P-type member 221 and the second P-type member 222 by a pin shaft.

[0038] See also Figure 5 The positioning housing 23 includes an arc plate 231 bent into a U-shape by a long strip and an end plate 232. The end plate 232 is U-shaped and connected to the arc plate 231. A through hole 233 is provided on the end plate 232. An angle sensor is fixed on the inner side of the end plate 232. The rotation shaft of the angle sensor extends out of the through hole. The arc plate is fixed on the P-shaped member. In addition, three small holes are provided on the end plate for fixing the angle sensor. Three small holes are provided on the arc plate for fixing on the P-shaped member.

[0039] Continue to see Figure 5 A U-shaped convex strip 234 is provided on the inner side of the positioning housing 23, and the U-shaped convex strip fits on the edge of the P-shaped piece for limiting the position. A threading hole 235 is provided on the arc plate 231, and the threading hole is used to pass the cable of the angle sensor.

[0040] See also Figure 6The connecting member 24 includes a U-shaped rod and a connecting plate 241. The U-shaped rod includes a first vertical rod 242, a connecting rod 243 and a second vertical rod 244. A fixing hole 245 is provided at the end of the first vertical rod 242, and the fixing hole 245 fixes the rotating shaft of the angle sensor; the end of the second vertical rod 244 is fixed on the connecting plate 241, and the connecting plate is fixed on the end of the telescopic rod.

[0041] Continue to see Figure 6 Two parallel fixing grooves 246 are provided on the connecting plate 241. The connecting plate is fixed to the end of the telescopic rod through a fixing piece and the fixing groove. The end of the second vertical rod 244 is fixed to the area between the two fixing grooves.

[0042] In the present invention, based on the above structure, the positioning housing of the angle sensor is installed on the ear plate of the guard plate and can move with the guard plate. The connecting plate, the first vertical rod, the connecting rod, the second vertical rod and the rotating shaft inside the angle sensor are all fixed in position during the angle measurement process. During the movement of the guard plate, the angle sensor can measure the relative rotation angle between the cylinder telescopic rod and the ear plate of the guard plate.

[0043] See also Figure 7 shows a schematic diagram of the location setting of the distance sensor, Figure 7 In the embodiment, the distance sensor is arranged on a vertically downward fixing rod 31 on the top beam 3. The distance sensor can transmit a signal toward the side guard plate and receive a signal reflected by the side guard plate.

[0044] See also Figure 8 In the present invention, since the mining is done underground, the retracting and extending status of the side guard plate can be uploaded to the ground for display and prompt. The analysis device can be embedded in the hydraulic support controller, and the retracting and extending device of the side guard plate is hydraulically controlled to transmit the transmission of the retracting and extending device of the side guard plate to the ground monitoring center through the mine ring network, and the ground monitoring center completes the prompt.

[0045] Based on the description of the specific structural framework above, compared with other guard plate position detection methods, the present invention has a simple structure, is easy to install, and has effective and accurate detection.

[0046] The present invention also provides a guard plate retraction and extension detection method based on the guard plate retraction and extension detection system, which is applicable to fully-mechanized mining working face support equipment, wherein the fully-mechanized mining working face support equipment includes a top beam, a guard plate and a telescopic beam, and the system includes an angle sensor, a distance sensor and an analysis device, including: Get angle information and distance information; The retracted or extended state of the side guard plate is determined based on the angle information and the distance information.

[0047] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the guard plate retraction and extension detection method of the guard plate retraction and extension detection system provided by the above-mentioned methods, and the method includes: acquiring angle information and distance information; determining the retraction and extension state of the guard plate based on the angle information and the distance information.

[0048] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the guard plate retraction and extension detection method of the guard plate retraction and extension detection system provided by the above-mentioned methods. The method includes: acquiring angle information and distance information; and determining the retracted or extended state of the guard plate based on the angle information and the distance information.

[0049] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0050] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A guard plate retraction and extension detection system, characterized in that: Applicable to the fully mechanized mining face support equipment, the fully mechanized mining face support equipment includes a top beam, a side guard plate and a telescopic beam, the system includes an angle sensor, a distance sensor and an analysis device, wherein: The angle sensor is configured and fixed at a preset position point at the connection between the guard plate and the target beam, and the target beam is a beam selected from the top beam and the telescopic beam; the angle sensor is used to send the collected angle information to the analysis device; The distance sensor is arranged at a preset position point below the top beam and the telescopic beam, and the distance between the distance sensor and the guard plate in a vertical state meets a preset distance condition; the guard plate in a vertical state indicates that the guard plate is at a right angle to the top beam; the distance sensor is used to send the collected distance information to the analysis device; The analyzing device is used to determine the retracted or extended state of the side guard plate according to the angle information and the distance information.

2. The guard plate retraction and extension detection system according to claim 1 is characterized in that: The analysis device is specifically used for: Determine a first rotation direction and an angle change of the guard plate according to the angle information; Determining a second rotation direction of the guard plate according to the distance information; When it is determined that the first rotation direction and the second rotation direction are the same, the retracted or extended state of the side guard plate is determined based on the first rotation direction and the angle change.

3. The guard plate retraction and extension detection system according to claim 1 or 2, characterized in that: The target beam is a telescopic beam, and the guard plate is configured to be connected to the end of the telescopic rod of the telescopic beam through an ear plate by a pin shaft; the ear plate is configured to be fixed on the inner side of the guard plate, and accordingly, the system further includes a first fixing member, and the angle sensor is fixed to a preset position point of the connection area between the guard plate and the target beam through the first fixing member; The first fixing member includes a positioning shell and a connecting member, the positioning shell is fixed to the ear plate, one end of the connecting member is fixed to the telescopic rod, and the other end of the connecting member is connected to the rotating shaft of the angle sensor, and the angle sensor is arranged inside the positioning shell.

4. The guard plate retraction and extension detection system according to claim 3 is characterized in that: The ear plate includes a first P-type part and a second P-type part, the first P-type part and the second P-type part are arranged side by side with a gap, the end of the telescopic rod is placed in the gap, and is connected to the first P-type part and the second P-type part by a pin shaft; the positioning shell includes an arc plate and an end plate bent into a U-shape by a long strip, the end plate is U-shaped and connected to the arc plate; a through hole is provided on the end plate, the angle sensor is fixed on the inner side of the end plate, and the rotating shaft of the angle sensor extends out of the through hole; the arc plate is fixed on the P-type part.

5. The guard plate retraction and extension detection system according to claim 4 is characterized in that: The connecting member includes a U-shaped rod and a connecting plate, the U-shaped rod includes a first vertical rod, a connecting rod and a second vertical rod, the end of the first vertical rod is provided with a fixing hole, the fixing hole fixes the rotating shaft of the angle sensor; the end of the second vertical rod is fixed to the connecting plate, and the connecting plate is fixed to the end of the telescopic rod.

6. The side guard plate retraction and extension detection system according to claim 5 is characterized in that: The connecting plate is provided with two parallel fixing grooves, and the connecting plate is fixed to the end of the telescopic rod through a fixing piece and the fixing groove, and the end of the second vertical rod is fixed to the area between the two fixing grooves.

7. The side guard plate retraction and extension detection system according to claim 4 is characterized in that: A U-shaped convex strip is arranged on the inner side surface of the positioning shell, and the U-shaped convex strip is attached to the edge position of the P-shaped part.

8. The guard plate retraction and extension detection system according to claim 4 or 7, characterized in that: The arc plate is provided with a threading hole, and the threading hole is used for threading the cable of the angle sensor.

9. The side guard plate retraction and extension detection system according to claim 1 is characterized in that: The distance sensor is arranged on a fixing rod on the top beam which is vertically downward.

10. A guard plate retraction and extension detection method based on the guard plate retraction and extension detection system according to any one of claims 1 to 9, characterized in that: Applicable to the fully mechanized mining face support equipment, the fully mechanized mining face support equipment includes a top beam, a side guard plate and a telescopic beam, the system includes an angle sensor, a distance sensor and an analysis device, including: Get angle information and distance information; The retracted or extended state of the side guard plate is determined according to the angle information and the distance information.

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