Coal piling sensor and mining belt conveyor

Abstract

The utility model discloses a coal piling sensor and a mining belt conveyor, the coal piling sensor comprises: a housing, the interior of which defines an accommodating cavity, and the housing is fixedly connected to the output end of the conveyor; the sensor body is fixedly connected into the accommodating cavity; the coal piling rod piece is movably connected to the shell, the first end side of the coal piling rod piece is arranged close to the output end of the conveyor, and the second end side of the coal piling rod piece is arranged close to the sensor body; wherein the coal piling rod piece can move in a switching mode between the abutting position where the coal piling rod piece abuts against the sensor body and the far position where the coal piling rod piece is far away from the sensor body, and when the coal piling rod piece abuts against the sensor body, the sensor body converts the position of the coal piling rod piece into an optical signal; the elastic assembly is arranged between the sensor body and the coal piling rod piece, and when the coal piling rod piece abuts against the abutting position of the sensor body, the elastic assembly generates elastic force enabling the coal piling rod piece to restore to the far position.

Description

Technical Field

[0001] This utility model relates to the field of coal pile sensor technology, and in particular to a coal pile sensor and a mining belt conveyor. Background Technology

[0002] In coal mine production, belt conveyors are crucial transportation equipment, but coal piling problems (such as excessively high or shifted piles) can lead to equipment malfunctions and even safety accidents. Traditional coal pile sensors are mostly active, which suffer from susceptibility to electromagnetic interference, high maintenance costs, and short service life. Fiber optic passive coal pile sensors, as a novel technology, utilize the excellent properties of optical fibers (such as strong anti-interference capabilities and good corrosion resistance), showing broad application prospects in the field of industrial monitoring.

[0003] However, existing fiber optic coal pile sensors still have room for improvement in terms of structural design and working principle, particularly in terms of detection sensitivity, self-reset function, and long-term stability. Therefore, there is an urgent need for a passive fiber optic coal pile sensor that is simple in structure, highly reliable, and adaptable to complex working conditions. Summary of the Invention

[0004] This solution addresses the problems and needs raised above. This utility model aims to solve at least one of the above problems by proposing a coal pile sensor and a mine belt conveyor. Due to the adoption of the following technical features, it can achieve the above technical objectives and bring about other technical effects.

[0005] One objective of this utility model is to provide a coal pile sensor, comprising:

[0006] A housing, the interior of which defines a receiving cavity, the housing being fixedly connected to the output end of the conveyor;

[0007] The sensor body is fixedly connected inside the receiving cavity;

[0008] A coal stacking rod is movably connected to the housing, with its first end positioned near the conveyor output end and its second end positioned near the sensor body. The coal stacking rod is capable of switching between a stop position against the sensor body and a distance position away from the sensor body. When the coal stacking rod is abutting against the sensor body, the sensor body converts the position of the coal stacking rod into an optical signal.

[0009] An elastic component is disposed between the sensor body and the coal stacking rod, configured such that when the coal stacking rod is abutted against the abutting position of the sensor body, the elastic component generates an elastic force that causes the coal stacking rod to return to a position away from the sensor body.

[0010] In this technical solution, when the coal seam height has not reached the warning value, there is a certain gap between the coal seam and the coal stacking rod, and the coal stacking rod is not in contact with the sensor body, i.e., the coal stacking rod is located in a far-away position. When the coal seam height reaches the warning value, the coal seam will contact the first end of the coal stacking rod and squeeze the coal stacking rod, causing the coal stacking rod to deflect and move. At the same time, the elastic component generates an elastic force that causes the coal stacking rod to return to the far-away position. When the coal stacking rod deflects at a certain angle, the second end of the coal stacking rod contacts the sensor body, i.e., the coal stacking rod is located in a stop position, and the sensor body emits a light signal, thereby warning the conveyor that the coal stack is too high. When the coal seam height returns to normal and the coal seam moves away from the coal stacking rod, the coal stacking rod automatically returns to its initial position through the elastic force of the elastic component.

[0011] In addition, the coal pile sensor according to this utility model may also have the following technical features:

[0012] In one example of this utility model, it further includes: a connecting rod, which is telescopically connected in the through hole. When the coal pile at the output end of the conveyor is too high, the connecting rod is driven by the coal pile member to move along the extension direction of the through hole and abut against the sensor body; wherein, the through hole communicating with the receiving cavity is provided on the housing.

[0013] In one example of this utility model, the coal stacking rod includes: a coal stacking rod body and a hemispherical head, the hemispherical head being hinged to the housing. When the coal stack at the output end of the conveyor is too high, the coal stacking rod is driven to swing to drive the connecting rod to move along the extension direction of the through hole.

[0014] In one example of this utility model, it also includes: a protective shell.

[0015] It has an installation cavity, the protective shell is fixedly connected to the housing and communicates with the through hole, and the hemispherical head is hinged in the installation cavity.

[0016] In one example of this utility model, the elastic component includes: a first elastic element,

[0017] One end of the member is fixedly connected to the through hole and sleeved on the connecting rod. The member is configured such that the connecting rod abuts against the hemispherical head under the action of elastic force, and when the coal stacking member moves from the far away position to the abutting position, the elastic member generates an elastic force that causes the coal stacking member to return to the far away position.

[0018] In one example of this utility model, the elastic component further includes: a second elastic element.

[0019] It is located between the connecting rod and the sensor body, and is configured such that when the coal stacking rod moves from the away position to the stop position, the second elastic element generates an elastic force that causes the coal stacking rod to return to the away position.

[0020] In one example of this utility model, the elastic element is one of the following: a compression spring, a tension spring, a spring sheet, and a rubber component.

[0021] In one example of this utility model, the housing is fixedly connected to the conveyor by fasteners, wherein at least one first connecting hole is provided on one of the housing and the conveyor, and at least one second connecting hole is provided on the other, and the fasteners pass through the first connecting hole and the second connecting hole in sequence.

[0022] In one example of this utility model, at least one ear plate is formed on the housing, and the first connecting hole or the second connecting hole is formed on the ear plate.

[0023] Another objective of this invention is to provide a mining belt conveyor, including the coal pile sensor described above.

[0024] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. The drawings are merely illustrative of some embodiments of this utility model and are not intended to limit the scope of all embodiments of this utility model.

[0026] Figure 1 This is a schematic diagram of the installation structure of the coal pile sensor according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the coal pile sensor according to an embodiment of the present utility model;

[0028] Figure 3 This is a cross-sectional view of a coal pile sensor according to an embodiment of the present invention;

[0029] Figure 4 This is an exploded view of a coal pile sensor according to an embodiment of the present invention.

[0030] List of reference numerals in the attached diagram:

[0031] Conveyor 200;

[0032] Cantilever rod 201;

[0033] Coal pile sensor 100;

[0034] Casing 10;

[0035] Receiving cavity 11;

[0036] Earplate 12;

[0037] First connecting hole 121;

[0038] Through hole 13;

[0039] Sensor body 20;

[0040] 30 coal stacking rods;

[0041] First end 301;

[0042] Second end 302;

[0043] 31. Coal stacking rod body;

[0044] End cap 311;

[0045] Hemispherical head 32;

[0046] Connecting rod 40;

[0047] Case 50;

[0048] Mounting cavity 51;

[0049] Elastic component 60;

[0050] First elastic element 61;

[0051] Second elastic element 62. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0053] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0054] According to the first aspect of this utility model, a coal pile sensor 100 is provided, such as... Figures 1 to 4 As shown, it includes:

[0055] The housing 10 defines an internal receiving cavity 11, and the housing 10 is fixedly connected to the output end of the conveyor 200;

[0056] The sensor body 20 is fixedly connected to the receiving cavity 11; for example, the sensor body 20 is an optical fiber sensor.

[0057] A coal stacking rod 30 is movably connected to the housing 10, with its first end 301 positioned near the output end of the conveyor 200 and its second end 302 positioned near the sensor body 20. The coal stacking rod 30 can switch between a stop position against the sensor body 20 and a distance position away from the sensor body 20. When the coal stacking rod 30 is abutting against the sensor body 20, the sensor body 20 converts the position of the coal stacking rod 30 into an optical signal.

[0058] An elastic component 60 is disposed between the sensor body 20 and the coal stacking rod 30, and is configured such that when the coal stacking rod 30 is abutted against the abutting position of the sensor body 20, the elastic component 60 generates an elastic force that causes the coal stacking rod 30 to return to a position away from the sensor body 20.

[0059] For example, such as Figure 1 As shown, a cantilever rod 201 is installed at the output end of the conveyor, and the coal pile sensor 100 is fixedly connected to the cantilever rod 201. That is, the coal pile rod 30 of the coal pile sensor 100 is inverted at the output end to detect the coal pile height at the output end.

[0060] The working process of the coal pile sensor 100 is as follows:

[0061] When the coal seam height has not reached the warning value, there is a certain gap between the coal seam and the coal stacking rod 30, and the coal stacking rod 30 is not in contact with the sensor body 20, i.e., the coal stacking rod 30 is located in a far-away position. When the coal seam height reaches the warning value, the coal seam will contact the first end 301 of the coal stacking rod 30 and squeeze the coal stacking rod 30, causing the coal stacking rod 30 to deflect and move. At the same time, the elastic component 60 generates an elastic force that causes the coal stacking rod 30 to return to the far-away position. When the coal stacking rod 30 deflects at a certain angle, the second end 302 of the coal stacking rod 30 contacts the sensor body 20, i.e., the coal stacking rod 30 is located in a stop position, and the sensor body 20 emits a light signal, thereby warning that the coal stack at the output end of the conveyor is too high. When the coal seam height returns to normal and the coal seam moves away from the coal stacking rod 30, the coal stacking rod 30 automatically returns to its initial position through the elastic force of the elastic component 60.

[0062] This coal pile sensor 100, utilizing passive fiber optic technology, significantly outperforms traditional active coal pile sensors in terms of anti-interference capability. Especially in complex industrial environments (such as coal mines), electromagnetic interference is effectively resolved, thus ensuring the stability of data transmission and the accuracy of measurement results, and improving the overall system reliability.

[0063] The coal pile sensor 100 features an optimized design that simplifies its structure, reducing the number of components and complexity. This simplified structure not only lowers manufacturing costs but also improves installation efficiency and maintenance convenience, while making the sensor more adaptable to various complex working conditions.

[0064] The coal pile sensor 100 employs a highly efficient mechanical reset mechanism (such as the elastic component 60) to ensure a rapid return to its initial state after pressure release. This self-resetting function not only improves the sensor's response speed and measurement accuracy but also extends the equipment's lifespan, reduces maintenance frequency, and further enhances the system's stability and reliability.

[0065] In one example of this utility model, it further includes: a connecting rod 40, which is telescopically connected in the through hole 13. When the coal pile at the output end of the conveyor is too high, the connecting rod 40 is driven by the coal pile member 30 to move along the extension direction of the through hole 13 and abut against the sensor body 20; wherein, the through hole 13 communicating with the receiving cavity 11 is provided on the housing 10;

[0066] By setting the connecting rod 40, the external force of excessive coal pile at the output end of the coal pile member 30 can be converted and transmitted to the connecting rod 40, so that the connecting rod 40 can move along the direction of the through hole 13, thereby stopping on the sensor body 20 and causing it to emit a light signal.

[0067] Preferably, the connecting rod 40 has a T-shaped structure, with its upper end facing the hemispherical head 32 and its lower end facing the sensor body 20. This allows the connecting rod 40 to be easily inserted into the elastic member 60. Preferably, a connecting plate can also be provided at the lower end of the connecting rod 40 to increase the contact area with the sensor body 20 and improve the sensitivity of identifying excessive coal pile-up in the conveyor.

[0068] In one example of this utility model, the coal stacking rod 30 includes: a coal stacking rod body 31 and a hemispherical head 32. The hemispherical head 32 is hinged to the housing 10. When the output end of the conveyor is piled with coal too high, the coal stacking rod 30 is driven to swing to drive the connecting rod 40 to move along the extension direction of the through hole 13.

[0069] Preferably, the end of the coal pile rod body 31 is provided with an end head 311. For example, the end head 311 is a cross-shaped structure. After the coal pile height reaches a certain height, the end head 311 is inserted into the coal pile. The cross-shaped end head 311 structure can improve the uniformity and balance of the force on the coal pile rod 30.

[0070] In other words, the hemispherical head 32 can swing in any direction on the housing 10, and the swing of the hemispherical head 32 can drive the connecting rod 40 to move along the extension direction of the through hole 13, thereby realizing the swing of the coal stacking rod 30 into the linear movement of the connecting rod 40.

[0071] It should be noted that the hemispherical head 32 connection method is an existing mature technology, and will not be elaborated here.

[0072] In one example of this utility model, it also includes: a protective shell 50.

[0073] An installation cavity 51 is provided on it, the protective shell 50 is fixedly connected to the housing 10 and communicates with the through hole 13, and the hemispherical head 32 is hinged in the installation cavity 51;

[0074] In addition to facilitating the connection of the hemispherical head 32, the protective shell 50 also has the following effects: by setting the protective shell 50, it can support the coal stacking rod 30 and further improve the reliability of the connection between the coal stacking rod 30 and the housing 10; on the other hand, the protective shell 50 further protects the through hole 13 and further prevents dust and other contaminants from entering the interior of the sensor body 20.

[0075] For example, the protective shell 50 is connected to the housing 10 by fasteners such as bolts or screws.

[0076] Preferably, the inner contour of the upper end of the mounting cavity 51 is an arc-shaped structure adapted to the hemispherical head 32, thereby improving the fit between the mounting cavity 51 and the hemispherical head 32.

[0077] In one example of this utility model, the elastic component 60 includes: a first elastic element 61,

[0078] One end of the elastic element 61 is fixedly connected to the through hole 13 and sleeved on the connecting rod 40. The configuration is such that the connecting rod 40 abuts against the hemispherical head 32 under the action of elastic force, and when the coal stacking rod 30 moves from the away position to the abutting position, the first elastic element 61 generates an elastic force that causes the coal stacking rod 30 to return to the away position. For example, the elastic element 60 is a compression spring, one end of which is connected to the through hole 13, and the other end of which is connected to the connecting rod 40. Specifically, the upper end of the connecting rod 40... A top plate is provided, and a compression spring is sleeved on the connecting rod 40. One end of the spring abuts against the top plate, and the other end is fixed in the through hole 13. The elastic element 60 sleeved on the connecting rod 40 enables the connecting rod 40 to resist the coal stacking rod 30 under the action of elastic force, so that it can always be located in the mounting cavity 51 of the protective shell 50. At the same time, when the coal stacking rod 30 swings, it drives the connecting rod 40, so that during the downward movement of the connecting rod 40, the compression spring also generates an elastic force that makes the connecting rod 40 return to its initial position.

[0079] In other words, when the coal seam height has not reached the warning value, there is a certain gap between the output end and the coal stacking rod 30, and the connecting rod 40 and the sensor body 20 do not contact each other, that is, the coal stacking rod 30 is located in a far-away position; when the coal seam height reaches the warning value, the coal seam will contact the first end 301 of the coal stacking rod 30 and squeeze the coal stacking rod 30, thereby causing the coal stacking rod 30 to deflect and move. When the coal stacking rod 30 deflects at a certain angle, the second end 302 of the coal stacking rod 30 drives the connecting rod 40 to contact the sensor body 20, that is, the coal stacking rod 30 is located in a stop position, and the sensor body 20 emits a light signal, thereby warning that the coal stacking height at the output end of the conveyor is too high. At this time, the first elastic element 61 generates an elastic force that causes the connecting rod 40 to return to its initial position. When the output height of the belt conveyor returns to normal, after the coal pile moves away from the coal pile member 30, the coal pile sensor 100 has an automatic reset function under the action of the first elastic element 61. The coal pile member 30 and the connecting rod 40 are driven to move towards the coal pile member 30 by the elastic force of the first elastic element 61, thereby driving the coal pile member 30 to move, and finally realizing that the coal pile member 30 and the connecting rod 40 automatically return to the initial position.

[0080] In one example of this utility model, the elastic component 60 further includes: a second elastic element 62.

[0081] It is located between the connecting rod 40 and the sensor body 20, and is configured such that when the coal stacking rod 30 moves from the away position to the stop position, the second elastic member 62 generates an elastic force that causes the coal stacking rod 30 to return to the away position.

[0082] For example, the second elastic element 62 is also a compression spring, with one end abutting against the connecting rod 40 and the other end connected to the sensor body 20, so that the second elastic element 62 also generates an elastic force that causes the connecting rod 40 to return to its initial position during the downward movement of the connecting rod 40.

[0083] A second elastic element 62 is provided between the connecting rod 40 and the sensor body 20, so that the connecting rod 40 can resist the coal piling rod 30 under the action of elastic force, so that it can always be located in the mounting cavity 51 of the protective shell 50. At the same time, by providing the second elastic element 62, the coal piling sensor 100 can also have an automatic reset function. When the coal piling height at the output end of the belt conveyor returns to normal and the coal piling moves away from the coal piling rod 30, the coal piling rod 30 and the connecting rod 40 automatically return to the initial position through the elastic force of the second elastic element 62. This reduces the need for manual intervention and improves the adaptability and reliability of the equipment.

[0084] In short, by setting the second elastic element 62, together with the first elastic element 61, the sensitivity and reliability of the automatic reset function of the coal pile sensor 100 can be further improved.

[0085] In one example of this utility model, the elastic element 60 is one of the following: a compression spring, a tension spring, a spring sheet, and a rubber element.

[0086] In one example of this utility model, the housing 10 is fixedly connected to the conveyor by fasteners. The housing 10 and the conveyor are provided with at least one first connection hole 121 and at least one second connection hole respectively. The fasteners pass through the first connection hole 121 and the second connection hole in sequence.

[0087] The housing 10 can be reliably fixed to the conveyor using fasteners, and it is easy to assemble and disassemble.

[0088] Preferably, the housing 10 is connected to the conveyor by a plurality of fasteners, which are spaced apart along the circumferential direction of the housing 10.

[0089] In one example of this utility model, at least one ear plate 12 is formed on the housing 10, and the first connecting hole 121 or the second connecting hole is formed on the ear plate 12;

[0090] In short, the first connecting hole 121 or the second connecting hole is provided on the ear plate 12, so that fasteners can pass through the first connecting hole 121 or the second connecting hole of the ear plate 12.

[0091] Preferably, the ear plates 12 include a plurality of ear plates, which are spaced apart along the circumferential direction of the housing 10.

[0092] A mining belt conveyor according to a second aspect of the present invention includes a coal pile sensor 100 as described above.

[0093] When the coal seam height does not reach the warning value, there is a certain gap between the coal pile at the output end and the coal pile member 30, and the coal pile member 30 does not contact the sensor body 20, that is, the coal pile member 30 is located in a far-away position. When the coal seam height reaches the warning value, the coal seam will contact the first end 301 of the coal pile member 30 and squeeze the coal pile member 30, thereby causing the coal pile member 30 to deflect and move. When the coal pile member 30 deflects at a certain angle, the second end 302 of the coal pile member 30 can convert the external force of the coal pile member 30 bearing the excessive coal pile height at the output end into the connecting rod 40 and transmit it. That is, the second end 302 of the coal pile member 30 drives the connecting rod 40 to move, so that the connecting rod 40 can move along the direction of the through hole 13, thereby stopping it from contacting the sensor body 20. That is, the coal pile member 30 is located in the stopped position, and the sensor body 20 emits a light signal, thereby warning that the coal pile height at the output end of the conveyor is too high.

[0094] The coal pile sensor 100 of the belt conveyor of this utility model has an automatic reset function. When the coal pile height at the output end of the belt conveyor returns to normal and the coal pile at the output end moves away from the coal pile member 30, the coal pile member 30 and the connecting rod 40 automatically return to the initial position through the elastic force of the spring. This reduces the need for manual intervention and improves the adaptability and reliability of the equipment.

[0095] This mining belt conveyor utilizes passive fiber optic technology, resulting in significantly superior anti-interference capabilities compared to traditional active coal pile sensors. Particularly in complex industrial environments (such as coal mines), electromagnetic interference is effectively resolved, ensuring data transmission stability and measurement accuracy, thus enhancing the overall system reliability.

[0096] This mining belt conveyor features an optimized design that simplifies the sensor structure, reducing the number and complexity of components. This simplified structure not only lowers manufacturing costs but also improves installation efficiency and maintenance convenience, while making the sensor more adaptable to various complex working conditions.

[0097] This mining belt conveyor employs a highly efficient mechanical reset mechanism (such as the elastic component 60) to ensure a rapid return to its initial state after pressure release. This self-resetting function not only improves the sensor's response speed and measurement accuracy but also extends the equipment's service life, reduces maintenance frequency, and further enhances the system's stability and reliability.

[0098] The foregoing description, with reference to preferred embodiments, details exemplary implementations of the coal pile sensor 100 and the mining belt conveyor proposed in this utility model. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of this utility model, and various combinations can be made to the various technical features and structures proposed in this utility model without exceeding the protection scope of this utility model, which is determined by the appended claims.

Claims

1. A coal pile sensor, characterized in that, include: A housing (10) having an internal cavity (11) defined therein, the housing (10) being fixedly connected to the output end of the conveyor; The sensor body (20) is fixedly connected to the receiving cavity (11); A coal stacking rod (30) is movably connected to the housing (10), with its first end (301) located near the output end of the conveyor and its second end (302) located near the sensor body (20). The coal stacking rod (30) is capable of switching between a stop position against the sensor body (20) and a distance position away from the sensor body (20). When the coal stacking rod (30) stops against the sensor body (20), the sensor body (20) converts the position of the coal stacking rod (30) into an optical signal. An elastic component (60) is disposed between the sensor body (20) and the coal stacking rod (30), and is configured such that when the coal stacking rod (30) abuts against the abutting position of the sensor body (20), the elastic component (60) generates an elastic force that causes the coal stacking rod (30) to return to a position away from the sensor body (20).

2. The coal pile sensor according to claim 1, characterized in that, It also includes: a connecting rod (40), which is telescopically connected in the through hole (13). When the coal pile at the output end of the conveyor is too high, the connecting rod (40) is driven by the coal pile member (30) to move along the extension direction of the through hole (13) and stop on the sensor body (20); wherein, the through hole (13) communicating with the receiving cavity (11) is provided on the housing (10).

3. The coal pile sensor according to claim 2, characterized in that, The coal stacking rod (30) includes a coal stacking rod body (31) and a hemispherical head (32). The hemispherical head (32) is hinged to the housing (10). When the coal stack at the output end of the conveyor is too high, the coal stacking rod (30) is driven to swing to drive the connecting rod (40) to move along the extension direction of the through hole (13).

4. The coal pile sensor according to claim 3, characterized in that, Also includes: protective shell (50), An installation cavity (51) is provided on it. The protective shell (50) is fixedly connected to the housing (10) and communicates with the through hole (13). The hemispherical head (32) is hinged in the installation cavity (51).

5. The coal pile sensor according to claim 2, characterized in that, The elastic component (60) includes: a first elastic element (61). One end of it is fixedly connected to the through hole (13) and sleeved on the connecting rod (40), configured such that the connecting rod (40) abuts against the hemispherical head (32) under the action of elastic force, and when the coal stacking rod (30) moves from the away position to the abutting position, the first elastic element (61) generates an elastic force that causes the coal stacking rod (30) to return to the away position.

6. The coal pile sensor according to claim 5, characterized in that, The elastic component (60) further includes a second elastic element (62). It is located between the connecting rod (40) and the sensor body (20) and is configured such that when the coal stacking rod (30) moves from the remote position to the stop position, the second elastic member (62) generates an elastic force that causes the coal stacking rod (30) to return to the remote position.

7. The coal pile sensor according to claim 6, characterized in that, The elastic component (60) is one of the following: a compression spring, a tension spring, a spring sheet, and a rubber component.

8. The coal pile sensor according to claim 1, characterized in that, The housing (10) is fixedly connected to the conveyor by fasteners. The housing (10) and the conveyor are provided with at least one first connection hole (121) and at least one second connection hole respectively. The fasteners pass through the first connection hole (121) and the second connection hole in sequence.

9. The coal pile sensor according to claim 8, characterized in that, At least one ear plate (12) is formed on the housing (10), and the first connection hole (121) or the second connection hole is formed on the ear plate (12).

10. A mining belt conveyor, characterized in that, Includes the coal pile sensor (100) as described in any one of claims 1 to 9.

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