Coal pile surface gas concentration monitoring device and coal spontaneous combustion monitoring device

Abstract

The invention belongs to the technical field of coal monitoring equipment, and particularly relates to a coal pile surface gas concentration monitoring device and a coal spontaneous combustion monitoring device.The coal pile surface gas concentration monitoring device comprises an angle adjusting mechanism fixedly arranged at the top end of the coal spontaneous combustion monitoring device; the fixed ends of the two telescopic rods are fixedly connected with the angle adjusting mechanism, and the angle adjusting mechanism is used for adjusting the angle between the second telescopic rod and the coal spontaneous combustion monitoring device; the rotating mechanism is fixedly connected with the telescopic end of the second telescopic rod; the plurality of monitoring mechanisms are arranged at the top end of the rotating mechanism, the plurality of monitoring mechanisms are arranged at equal intervals in the circumferential direction of the rotating mechanism, and after the plurality of monitoring mechanisms are opened towards the outer side of the rotating mechanism, the plurality of monitoring mechanisms cover the surface of the coal pile in a conical shape to monitor the gas concentration and temperature of the surface of the coal pile. The gas concentration and temperature on the surface of the coal pile and the temperature in the coal pile can be monitored, and the purpose of preventing spontaneous combustion of the coal pile is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal monitoring equipment, and in particular relates to a coal pile surface gas concentration monitoring device and a coal spontaneous combustion monitoring device. Background Art

[0002] In the prior art, when monitoring the spontaneous combustion of coal, the temperature of the coal pile is generally monitored, and whether the spontaneous combustion of coal will occur is determined based on the monitored temperature value.

[0003] However, it is not accurate to judge coal spontaneous combustion by monitoring the temperature inside the coal pile. This is because coal spontaneous combustion is not only related to the temperature inside the coal pile, but also to the gas content on the surface of the coal pile. When the temperature inside the coal pile is very high, but the gas content on the surface of the coal pile is very low, coal spontaneous combustion will not occur. On the contrary, when the temperature inside the coal pile is not very high, but the gas content on the surface of the coal pile reaches a certain value, coal spontaneous combustion will also occur.

[0004] Therefore, it is necessary to design a coal pile surface gas concentration monitoring device and a coal spontaneous combustion monitoring device to simultaneously monitor the temperature inside the coal pile and the gas content on the coal pile surface. Summary of the invention

[0005] The purpose of the present invention is to provide a coal pile surface gas concentration monitoring device and a coal spontaneous combustion monitoring device, so as to achieve the purpose of monitoring the coal pile to prevent the spontaneous combustion.

[0006] To achieve the above object, the present invention provides the following scheme: a coal pile surface gas concentration monitoring device, comprising

[0007] An angle adjustment mechanism is fixedly arranged on the top of the coal spontaneous combustion monitoring device;

[0008] A second telescopic rod, a fixed end of which is fixedly connected to the angle adjustment mechanism, and the angle adjustment mechanism is used to adjust the angle between the second telescopic rod and the coal spontaneous combustion monitoring device;

[0009] A rotating mechanism, fixedly connected to the telescopic end of the second telescopic rod;

[0010] A plurality of monitoring mechanisms are arranged at the top of the rotating mechanism. The plurality of monitoring mechanisms are arranged at equal intervals along the circumference of the rotating mechanism. After opening toward the outside of the rotating mechanism, the plurality of monitoring mechanisms are covered in a cone shape on the surface of the coal pile to monitor the gas concentration and temperature on the surface of the coal pile.

[0011] A coal pile surface gas concentration monitoring device based on the present invention, the monitoring mechanism includes a rotating part, the bottom end of the rotating part is rotatably connected to the top end of the rotating mechanism, the top end of the rotating part is fixedly connected with an unfolding and storing part, the unfolding and storing part is fixedly connected with a monitoring part, and the monitoring part is opened toward the outside of the rotating mechanism and covers the surface of the coal pile in a cone shape to monitor the gas concentration and temperature on the surface of the coal pile.

[0012] A coal pile surface gas concentration monitoring device based on the present invention, the rotating part includes a central shaft and a first motor, the bottom end of the central shaft is rotatably connected to the top of the rotating mechanism, the top of the central shaft is coaxially fixedly connected with a rotating platform, the unfolding and storing part is fixedly connected to the top of the rotating platform, the middle part of the central shaft is fixedly sleeved with a first driven gear, the first motor is fixedly connected to the top of the rotating mechanism, the output shaft of the first motor is fixedly connected with a first driving gear, and the first driving gear is meshed with the first driven gear.

[0013] A coal pile surface gas concentration monitoring device based on the present invention, the unfolding and storing part includes a second double-axis motor, the second double-axis motor is fixedly connected to the top of the rotating platform, the two output ends of the second double-axis motor are fixedly connected to the second driving gear, the two output ends of the second double-axis motor are respectively provided with a second fixed plate on the outside, the second fixed plate is vertically arranged and the bottom end is fixedly connected to the top of the rotating platform, a second rotating shaft is rotatably connected between the tops of the two second fixed plates, and second passive gears are fixedly sleeved on both ends of the second rotating shaft, the second passive gear is located above the second driving gear and meshes with the second driving gear one-to-one, and the monitoring part is fixedly connected to the second rotating shaft.

[0014] A coal pile surface gas concentration monitoring device based on the present invention, the monitoring part includes a third telescopic rod, the fixed end of the third telescopic rod is fixedly connected to the second rotating shaft, the outer wall fixing sleeve of the fixed end of the third telescopic rod is provided with a first fixing ring, the outer wall fixing sleeve of the telescopic end of the third telescopic rod is provided with a second fixing ring, the outer wall sliding sleeve of the third telescopic rod is provided with a plurality of sliding rings, a temperature monitor and a plurality of gas probes are fixedly connected to the outer wall of the sliding ring, and a spring is fixedly connected between any two adjacent sliding rings, between the sliding ring and the first fixing ring, and between the sliding ring and the second fixing ring.

[0015] A coal pile surface gas concentration monitoring device based on the present invention, wherein the gas probes include an oxygen concentration probe, a carbon monoxide concentration probe, and a carbon dioxide concentration probe.

[0016] A coal pile surface gas concentration monitoring device based on the present invention, the rotating mechanism includes a connecting rod, the connecting rod is fixedly connected to the telescopic end of the second telescopic rod, the top of the connecting rod is fixedly connected to a positioning plate, the side wall and the top rotating sleeve of the positioning plate are provided with a rotating table, the monitoring mechanism is fixedly arranged on the top of the rotating table, the side wall of the connecting rod away from the telescopic end of the second telescopic rod is fixedly connected to a third motor, the output shaft of the third motor is fixedly connected to a third driving gear, the inner side wall of the bottom end of the rotating table is provided with a gear ring, and the third driving gear is meshed with the gear ring.

[0017] A coal spontaneous combustion monitoring device includes a coal pile surface gas concentration monitoring device and a vehicle body, wherein wheels are arranged at the bottom end of the vehicle body, a height adjustment part is fixedly connected to the top end of the vehicle body, a platform is fixedly connected to the top end of the height adjustment part, the angle adjustment mechanism is fixedly arranged at the top end of the platform, a coal pile internal temperature detection mechanism is arranged at the bottom end of the platform, a cab and a counterweight are arranged on the vehicle body, and the counterweight is located at one end of the vehicle body away from the angle adjustment mechanism.

[0018] A coal spontaneous combustion monitoring device based on the present invention, the internal temperature detection mechanism of the coal pile includes a second motor, the second motor is fixedly connected to one end of the bottom of the platform, the output shaft of the second motor is fixedly connected to one end of a screw, the other end of the screw is rotatably connected to a fixed seat, the fixed seat is fixedly connected to the other end of the bottom of the platform, the screw is threadedly connected to a slider, the top of the slider is in sliding contact with the bottom of the platform, the bottom end of the slider is fixedly connected to a fourth telescopic rod, the fourth telescopic rod is vertically arranged and the bottom end is fixedly connected to a fifth telescopic rod, the fifth telescopic rod is horizontally arranged and the telescopic end is fixedly connected to a temperature probe.

[0019] According to a coal spontaneous combustion monitoring device of the present invention, the height adjustment part includes four first telescopic rods, which are vertically arranged and respectively located at the corners of the top of the vehicle body, and the platform is fixedly connected to the tops of the four first telescopic rods.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] The monitoring mechanism of the present invention can be opened in an inverted cone shape relative to the rotating mechanism and cover the coal pile, so as to monitor the gas concentration and temperature on the surface of the coal pile. The set rotating mechanism can drive the opened monitoring mechanism to rotate around the coal pile at a set speed to realize all-round monitoring of the surface of the coal pile. The set angle adjustment mechanism and the second telescopic rod can work together to adjust the positions of the rotating mechanism and the monitoring mechanism. When the coal pile needs to be monitored, the rotating mechanism and the monitoring mechanism are adjusted to the top of the coal pile for monitoring. When monitoring is not required, the rotating mechanism and the monitoring mechanism can be folded and stored at the top of the coal spontaneous combustion monitoring device to reduce the space occupied by the device when it is stored. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0023] Figure 1 It is an overall schematic diagram of the present invention;

[0024] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0025] Figure 3 for Figure 1 A partial enlarged view of B in the middle;

[0026] Figure 4 It is a bottom schematic diagram of the present invention;

[0027] Figure 5 It is a schematic diagram of the angle adjustment mechanism and the rotation mechanism of the present invention;

[0028] Figure 6 for Figure 5 A partial enlarged view of C in the middle.

[0029] Among them, 1, vehicle body; 2, cab; 3, counterweight; 4, wheel; 5, first telescopic rod; 6, platform; 7, second telescopic rod; 8, rotating table; 9, third telescopic rod; 10, first fixed ring; 11, second fixed ring; 12, first dual-axis motor; 13, first driving gear; 14, first driven gear; 15, first rotating shaft; 16, first fixed plate; 17, central shaft; 18, first motor; 19, first driving gear; 20, first driven gear; 21, rotating Rotating platform; 22. Second dual-axis motor; 23. Second driving gear; 24. Second passive gear; 25. Second rotating shaft; 26. Second fixed plate; 27. Spring; 28. Sliding ring; 29. ​​Second motor; 30. Lead screw; 31. Fixed seat; 32. Sliding block; 33. Fourth telescopic rod; 34. Fifth telescopic rod; 35. Temperature probe; 36. Limit block; 37. Connecting rod; 38. Third motor; 39. Third driving gear; 40. Positioning plate; 41. Gas probe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0031] Spontaneous combustion of coal is the phenomenon that coal catches fire without being ignited. When coal with a tendency to self-ignite encounters oxygen in the air, the heat generated by oxidation is greater than the heat dissipated to the surrounding environment, heat accumulates, causing the coal temperature to rise to the ignition point and ignite.

[0032] The spontaneous combustion of coal piles requires the following four conditions to be met at the same time:

[0033] (1) It has a tendency to spontaneously combust. The spontaneous combustion tendency of coal is a natural property of coal, which reflects the degree of metamorphism of coal. Moisture, ash, sulfur content, particle size, porosity, and thermal conductivity are the basic conditions for coal spontaneous combustion. The oxidation ability of coal at room temperature mainly depends on the content of volatile matter. The higher the volatile matter content, the stronger the spontaneous combustion tendency, and the spontaneous combustion time will be correspondingly shortened. According to the relationship between the degree of oxidation of coal and the ignition point, the difference ΔT between the ignition point of the raw coal sample and the ignition point of the oxidized coal sample is used to infer the spontaneous combustion tendency of coal. Generally, the raw coal sample has a low ignition point and a large ΔT, which is easy to spontaneously combust; coal with ΔT>40℃ is easy to spontaneously combust; coal with ΔT<20℃ (except lignite and long flame coal) is not easy to spontaneously combust. From lignite to anthracite, the ignition point is getting higher and higher, and the spontaneous combustion tendency is getting weaker and weaker.

[0034] (2) Oxygen supply conditions. The coal pile is exposed to the air, the surface is in full contact with the air, and the air penetrates into the coal pile through the gaps between the coal blocks, creating conditions for oxidation inside the coal pile. The larger the coal block size and the larger the gaps between the coal blocks, the better the oxygen supply conditions.

[0035] (3) Oxidation time. There is a process for coal to develop from oxidation to spontaneous combustion. The spontaneous combustion period of coal can only be achieved when the oxidation time reaches the spontaneous combustion period. For example, the spontaneous combustion period of long flame coal is 1 to 3 months, and that of gas coal is 4 to 6 months.

[0036] (4) Heat storage conditions. Coal releases heat during the oxidation process. Only when the heat released is greater than the heat dissipated can the heat be accumulated and the temperature rise. When the ignition point of the coal is reached, it will spontaneously ignite.

[0037] In addition, factors such as coal particle size, moisture, ash content, compaction degree, ambient temperature, and humidity will affect the spontaneous combustion of coal. The finer the particle size, the larger the specific surface area, the more violent the oxidation reaction, and the easier it is to spontaneously combust. Generally, coal spontaneous combustion goes through three stages: water evaporation, oxidation, and spontaneous combustion. Coal has high humidity. Soaking coal in water can prevent coal from directly contacting oxygen and causing oxidation reaction. As long as the water is not lost, it will not affect the quality of the coal. Furthermore, water evaporation consumes a lot of heat. The higher the water content of the coal, the longer the evaporation period, and the temperature does not rise significantly during this stage.

[0038] The higher the ash content, the less likely it is to spontaneously combust. Compacting the coal pile can reduce the gaps between coal blocks, reduce the amount of air infiltration into the coal pile, and weaken the oxygen supply conditions. The ambient temperature and humidity will affect the time for coal to spontaneously combust. The higher the temperature and the greater the humidity, the shorter the time for coal to spontaneously combust.

[0039] According to the actual situation of spontaneous combustion of coal piles in the power, metallurgy, coal and cement industries, the spontaneous combustion occurred neither on the surface nor in the depths of the coal pile, but below the surface. Under natural accumulation conditions, the coal pile can be divided into three layers.

[0040] Cooling layer: The surface layer of the coal pile, about 0.5 to 1.5 m thick. The coal in this layer is relatively loose and has sufficient contact with the air. Although oxidation reaction occurs, the heat dissipation conditions are good, so spontaneous combustion will not occur.

[0041] Oxidation layer: This layer is located below the cooling layer, with a thickness of about 1 to 4 meters. It has all the conditions for spontaneous combustion of coal and will spontaneously combust when it reaches the natural ignition period.

[0042] Asphyxiation layer: This layer is located below the oxidation layer. The coal seam is relatively compacted, the oxygen supply is insufficient, the water content is high, the degree of oxidation is low, and spontaneous combustion is not easy to occur.

[0043] When coal is naturally piled, the particles are generally finer in the center, and the particles become coarser as they go around. Correspondingly, from the center to the surroundings, the gaps become larger, the ventilation and heat dissipation conditions become better, and the cooling layer and the oxidation layer become thicker. Spontaneous combustion generally occurs in the oxidation layer. At the same time, it is accompanied by temperature rise, hot air, smoke and other phenomena. When it is found that heat or smoke is released somewhere on the coal pile, the point of self-heating or self-ignition must be in the oxidation layer vertically downward from that part, because the gas flow direction is vertically upward due to the heat pressure of the coal's self-heating or self-ignition. Once a certain part spontaneously ignites, it will also change the heating conditions of the upper cooling layer, causing the cooling layer to spontaneously ignite. Therefore, if a coal pile is found to spontaneously ignite, measures must be taken immediately to prevent the scope of spontaneous combustion from expanding.

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Reference Figures 1 to 6 As shown, the present invention provides a coal pile surface gas concentration monitoring device, including an angle adjustment mechanism, which is fixedly arranged on the top of the coal spontaneous combustion monitoring device;

[0046] A second telescopic rod 7, a fixed end of which is fixedly connected to an angle adjustment mechanism, and the angle adjustment mechanism is used to adjust the angle between the second telescopic rod 7 and the coal spontaneous combustion monitoring device;

[0047] A rotating mechanism, fixedly connected to the telescopic end of the second telescopic rod 7;

[0048] A plurality of monitoring mechanisms are arranged at the top of the rotating mechanism and are arranged at equal intervals along the circumference of the rotating mechanism. After opening toward the outside of the rotating mechanism, the plurality of monitoring mechanisms are covered in a cone shape on the surface of the coal pile to monitor the gas concentration and temperature on the surface of the coal pile.

[0049] The monitoring mechanism can be opened relative to the rotating mechanism in an inverted cone shape to cover the coal pile, so as to monitor the gas concentration and temperature on the surface of the coal pile. The set rotating mechanism can drive the opened monitoring mechanism to rotate around the coal pile at a set speed to achieve all-round monitoring of the surface of the coal pile. The set angle adjustment mechanism and the second telescopic rod 7 can work together to adjust the position of the rotating mechanism and the monitoring mechanism. When it is necessary to monitor the coal pile, the rotating mechanism and the monitoring mechanism are adjusted to the top of the coal pile for monitoring. When monitoring is not required, the rotating mechanism and the monitoring mechanism can be folded and stored at the top of the coal spontaneous combustion monitoring device to reduce the space occupied by the device when it is stored.

[0050] Furthermore, the monitoring mechanism includes a rotating part, the bottom end of the rotating part is rotatably connected to the top end of the rotating mechanism, the top end of the rotating part is fixedly connected to an unfolding and storing part, the unfolding and storing part is fixedly connected to a monitoring part, and the monitoring part is opened toward the outside of the rotating mechanism and covers the surface of the coal pile in a cone shape to monitor the gas concentration and temperature on the surface of the coal pile.

[0051] Furthermore, the rotating part includes a central shaft 17 and a first motor 18. The bottom end of the central shaft 17 is rotatably connected to the top of the rotating mechanism. The top of the central shaft 17 is coaxially fixedly connected with a rotating platform 21. The unfolding storage part is fixedly connected to the top of the rotating platform 21. The middle part of the central shaft 17 is fixedly sleeved with a first driven gear 20. The first motor 18 is fixedly connected to the top of the rotating mechanism. The output shaft of the first motor 18 is fixedly connected with a first driving gear 19, and the first driving gear 19 is meshed with the first driven gear 20.

[0052] The first motor 18 drives the central axis 17 and the rotating platform 21 to rotate through the first driving gear 19 and the first driven gear 20, thereby driving the unfolding storage part and the monitoring part to rotate. When the unfolding storage part drives the monitoring part to unfold and cover the surface of the coal pile, the rotation driven by the first motor 18 is used to realize that the monitoring end of the monitoring part is directed toward the surface of the coal pile for monitoring. When the unfolding storage part drives the monitoring part to be stored on the rotating platform 21, the rotation driven by the first motor 18 is used to realize that all the monitoring parts are parallel to each other, thereby reducing the space occupied during storage.

[0053] Furthermore, the unfolding storage portion includes a second dual-axis motor 22, which is fixedly connected to the top of the rotating platform 21, and two output ends of the second dual-axis motor 22 are fixedly connected to the second driving gear 23. Second fixed plates 26 are arranged on the outer sides of the two output ends of the second dual-axis motor 22. The second fixed plates 26 are vertically arranged and the bottom ends are fixedly connected to the top of the rotating platform 21. A second rotating shaft 25 is rotatably connected between the tops of the two second fixed plates 26. Second passive gears 24 are fixedly sleeved at both ends of the second rotating shaft 25. The second passive gear 24 is located above the second driving gear 23 and meshes with the second driving gear 23 one by one. The monitoring portion is fixedly connected to the second rotating shaft 25.

[0054] The second dual-axis motor 22 drives the second rotating shaft 25 to rotate through the second driving gear 23 and the second driven gear 24, thereby driving the monitoring part to be unfolded or retracted.

[0055] Furthermore, the monitoring part includes a third telescopic rod 9, a fixed end of the third telescopic rod 9 is fixedly connected to the second rotating shaft 25, a first fixed ring 10 is provided on the fixed sleeve of the outer wall of the fixed end of the third telescopic rod 9, a second fixed ring 11 is provided on the fixed sleeve of the outer wall of the telescopic end of the third telescopic rod 9, a plurality of sliding rings 28 are provided on the sliding sleeve of the outer wall of the third telescopic rod 9, a temperature monitor and a plurality of gas probes 41 are fixedly connected to the outer wall of the sliding ring 28, and a spring 27 is fixedly connected between any two adjacent sliding rings 28, between the sliding ring 28 and the first fixed ring 10, and between the sliding ring 28 and the second fixed ring 11.

[0056] When the third telescopic rod 9 is extended, its telescopic end drives all the sliding rings 28 to be evenly distributed over the entire length of the third telescopic rod 9 through the second fixed ring 11 and the spring 27, so that the gas concentration and temperature on the surface of the coal pile are monitored through the temperature monitor and the gas probe 41. When the third telescopic rod 9 is shortened, the spring 27 contracts accordingly to ensure that the sliding rings 28 are automatically reset and evenly distributed on the third telescopic rod 9.

[0057] Furthermore, the gas probe 41 includes an oxygen concentration probe, a carbon monoxide concentration probe, and a carbon dioxide concentration probe.

[0058] The oxygen concentration probe is used to monitor the oxygen concentration on the surface of the coal pile, the carbon monoxide concentration probe is used to monitor the carbon monoxide concentration on the surface of the coal pile, and the carbon dioxide concentration probe is used to monitor the carbon dioxide concentration on the surface of the coal pile.

[0059] Furthermore, the rotating mechanism includes a connecting rod 37, which is fixedly connected to the telescopic end of the second telescopic rod 7, a positioning plate 40 is fixedly connected to the top of the connecting rod 37, a rotating table 8 is provided on the side wall and the top rotating sleeve of the positioning plate 40, and a monitoring mechanism is fixedly arranged on the top of the rotating table 8, a third motor 38 is fixedly connected to the side wall of the connecting rod 37 away from the telescopic end of the second telescopic rod 7, and a third driving gear 39 is fixedly connected to the output shaft of the third motor 38, a gear ring is provided on the inner side wall of the bottom end of the rotating table 8, and the third driving gear 39 is meshed with the gear ring.

[0060] After the third telescopic rod 9 is unfolded to cover the surface of the coal pile with the gas probe 41, the third motor 38 is controlled to work, and the rotating table 8 is driven to rotate through the third driving gear 39 and the ring gear, thereby driving the third telescopic rod 9 and the gas probe 41 to continuously rotate on the surface of the coal pile, thereby realizing all-round monitoring of the surface of the coal pile and improving the monitoring effect.

[0061] Furthermore, the angle adjustment mechanism includes a first dual-axis motor 12, which is fixed to the top of the platform 6, and the two output ends of the first dual-axis motor 12 are respectively fixedly connected to the first driving gear 13, and the first fixed plates 16 are respectively arranged on the outer sides of the two output ends of the first dual-axis motor 12. The two first fixed plates 16 are vertically arranged and the bottom ends are fixedly connected to the top of the platform 6. A first rotating shaft 15 is rotatably connected between the tops of the two first fixed plates 16. Two first passive gears 14 are fixedly sleeved on the first rotating shaft 15. The two first passive gears 14 are located above the first driving gear 13 and mesh with the first driving gear 13 one by one. The fixed end of the second telescopic rod 7 is fixedly sleeved on the first rotating shaft 15.

[0062] The first dual-axis motor 12 drives the first rotating shaft 15 to rotate through the first driving gear 13 and the first driven gear 14 to adjust the angle of the second telescopic rod 7 relative to the platform 6 .

[0063] Furthermore, a limit block 36 is provided at the top of the platform 6, and the limit block 36 can provide limit support to the second telescopic rod 7 when it is folded and stored.

[0064] A coal spontaneous combustion monitoring device includes a coal pile surface gas concentration monitoring device, and also includes a vehicle body 1, a wheel 4 is arranged at the bottom end of the vehicle body 1, a height adjustment part is fixedly connected to the top of the vehicle body 1, a platform 6 is fixedly connected to the top of the height adjustment part, an angle adjustment mechanism is fixedly arranged on the top of the platform 6, a coal pile internal temperature detection mechanism is arranged at the bottom of the platform 6, a cab 2 and a counterweight 3 are arranged on the vehicle body 1, and the counterweight 3 is located at the end of the vehicle body 1 away from the angle adjustment mechanism.

[0065] Furthermore, the internal temperature detection mechanism of the coal pile includes a second motor 29, which is fixedly connected to one end of the bottom of the platform 6, and the output shaft of the second motor 29 is fixedly connected to one end of a screw 30, and the other end of the screw 30 is rotatably connected to a fixed seat 31, and the fixed seat 31 is fixedly connected to the other end of the bottom of the platform 6, and the screw 30 is threadedly connected to a slider 32, and the top of the slider 32 is in sliding contact with the bottom end of the platform 6, and the bottom end of the slider 32 is fixedly connected to a fourth telescopic rod 33, the fourth telescopic rod 33 is vertically arranged and the bottom end is fixedly connected to the fifth telescopic rod 34, and the fifth telescopic rod 34 is horizontally arranged and the telescopic end is fixedly connected to a temperature probe 35.

[0066] The temperature probe 35 can detect the internal temperature of a single-point coal pile. During detection, the second motor 29 drives the lead screw 30 to rotate, driving the slider 32 and the temperature probe 35 to continuously approach the coal pile, and finally inserting the temperature probe 35 into the coal pile for temperature detection. The fourth telescopic rod 33 can be extended or shortened to adjust the upper and lower heights of the temperature probe 35, and the fifth telescopic rod 34 can be extended or shortened to increase the depth of the temperature probe 35 inserted into the coal pile.

[0067] Furthermore, the height adjustment part includes four first telescopic rods 5 , which are vertically arranged and respectively located at the corners of the top end of the vehicle body 1 , and the platform 6 is fixedly connected to the top ends of the four first telescopic rods 5 .

[0068] When the height of the coal pile to be monitored is relatively high, the first telescopic rod 5 can be controlled to extend to increase the height of the platform 6, so that the monitoring device can monitor a coal pile with a higher height.

[0069] The working process of the present invention is as follows:

[0070] The device of the present invention includes two states: storage and working;

[0071] In the storage state, the second telescopic rod 7 is in a horizontal state and its telescopic end is located at the rear end of the entire device, the third telescopic rod 9 is also in a horizontal state and its telescopic end is located at the front end of the entire device, and the plurality of third telescopic rods 9 are parallel to each other, and the slider 32 is located near the second motor 29, and the fourth telescopic rod 33 and the fifth telescopic rod 34 are both in a retracted state;

[0072] When in working state, the whole device is moved to the vicinity of the coal pile to be monitored, and the extension length of the telescopic end of the first telescopic rod 5 is first adjusted according to the height of the coal pile, and the platform 6 is lifted to a height matching the top of the coal pile, and then the second telescopic rod 7 is adjusted by 180° through the first double-axis motor 12, the first driving gear 13 and the first passive gear 14, and at the same time, the telescopic end of the second telescopic rod 7 is extended to move the rotating table 8 to above the top of the coal pile. At this time, the top of the rotating table 8 changes from an upward state to a downward state, and then the expansion angle of the third telescopic rod 9 is adjusted by the second double-axis motor 22, the second driving gear 23 and the second passive gear 24, so that all the third telescopic rods 9 are in an inverted cone shape and cover the surface of the coal pile, and then the first The motor 18, the first driving gear 19 and the first driven gear 20 adjust the rotation angle of the third telescopic rod 9 so that the gas probe 41 faces the surface of the coal pile. Then the third telescopic rod 9 is extended, and the gas probe 41 is evenly distributed on the surface of the coal pile through the drive of the second fixing ring 11 and the spring 27 to monitor the gas concentration and temperature. When it is necessary to detect the temperature inside the coal pile, the slider 32 is driven by the second motor 29 and the screw 30 to move toward the coal pile to insert the temperature probe 35 into the target depth in the coal pile, and then the temperature detection is started. The height position and horizontal position of the temperature probe 35 are adjusted by the fourth telescopic rod 33 and the fifth telescopic rod 34, so that the temperature probe 35 can detect the temperature at different target depths in the coal pile.

[0073] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0074] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope of the present invention.

Claims

1. A coal pile surface gas concentration monitoring device, characterized in that: include An angle adjustment mechanism is fixedly arranged on the top of the coal spontaneous combustion monitoring device; A second telescopic rod (7), a fixed end of which is fixedly connected to the angle adjustment mechanism, and the angle adjustment mechanism is used to adjust the angle between the second telescopic rod (7) and the coal spontaneous combustion monitoring device; A rotating mechanism fixedly connected to the telescopic end of the second telescopic rod (7); A plurality of monitoring mechanisms are arranged at the top of the rotating mechanism. The plurality of monitoring mechanisms are arranged at equal intervals along the circumference of the rotating mechanism. After opening toward the outside of the rotating mechanism, the plurality of monitoring mechanisms are covered in a cone shape on the surface of the coal pile to monitor the gas concentration and temperature on the surface of the coal pile.

2. A coal pile surface gas concentration monitoring device according to claim 1, characterized in that: The monitoring mechanism includes a rotating part, the bottom end of the rotating part is rotatably connected to the top end of the rotating mechanism, the top end of the rotating part is fixedly connected to an unfolding and storing part, the unfolding and storing part is fixedly connected to a monitoring part, and the monitoring part is opened toward the outside of the rotating mechanism and covers the surface of the coal pile in a cone shape to monitor the gas concentration and temperature on the surface of the coal pile.

3. A coal pile surface gas concentration monitoring device according to claim 2, characterized in that: The rotating part comprises a central shaft (17) and a first motor (18); the bottom end of the central shaft (17) is rotatably connected to the top end of the rotating mechanism; the top end of the central shaft (17) is coaxially fixedly connected to a rotating platform (21); the unfolding and storing part is fixedly connected to the top end of the rotating platform (21); a first driven gear (20) is fixedly sleeved in the middle of the central shaft (17); the first motor (18) is fixedly connected to the top end of the rotating mechanism; the output shaft of the first motor (18) is fixedly connected to a first driving gear (19); and the first driving gear (19) is meshed with the first driven gear (20).

4. A coal pile surface gas concentration monitoring device according to claim 3, characterized in that: The unfolding and storing portion comprises a second double-axis motor (22), the second double-axis motor (22) is fixedly connected to the top of the rotating platform (21), the two output ends of the second double-axis motor (22) are fixedly connected to the second driving gear (23), the two output ends of the second double-axis motor (22) are both provided with a second fixing plate (26) outside, the second fixing plate (26) is vertically arranged and the bottom end is fixedly connected to the top of the rotating platform (21), a second rotating shaft (25) is rotatably connected between the top ends of the two second fixing plates (26), the two ends of the second rotating shaft (25) are respectively fixedly sleeved with a second passive gear (24), the second passive gear (24) is located above the second driving gear (23) and meshes with the second driving gear (23) in a one-to-one correspondence, and the monitoring portion is fixedly connected to the second rotating shaft (25).

5. A coal pile surface gas concentration monitoring device according to claim 4, characterized in that: The monitoring unit comprises a third telescopic rod (9), the fixed end of the third telescopic rod (9) is fixedly connected to the second rotating shaft (25), the fixed sleeve of the outer wall of the fixed end of the third telescopic rod (9) is provided with a first fixing ring (10), the fixed sleeve of the outer wall of the telescopic end of the third telescopic rod (9) is provided with a second fixing ring (11), the sliding sleeve of the outer wall of the third telescopic rod (9) is provided with a plurality of sliding rings (28), the outer wall of the sliding ring (28) is fixedly connected with a temperature monitor and a plurality of gas probes (41), and a spring (27) is fixedly connected between any two adjacent sliding rings (28), between the sliding ring (28) and the first fixing ring (10), and between the sliding ring (28) and the second fixing ring (11).

6. A coal pile surface gas concentration monitoring device according to claim 5, characterized in that: The gas probe (41) comprises an oxygen concentration probe, a carbon monoxide concentration probe, and a carbon dioxide concentration probe.

7. A coal pile surface gas concentration monitoring device according to claim 1, characterized in that: The rotating mechanism comprises a connecting rod (37), the connecting rod (37) being fixedly connected to the telescopic end of the second telescopic rod (7), the top of the connecting rod (37) being fixedly connected to a positioning plate (40), the side wall and the top of the positioning plate (40) being rotatably sleeved with a rotating platform (8), the monitoring mechanism being fixedly arranged at the top of the rotating platform (8), the side wall of the connecting rod (37) away from the telescopic end of the second telescopic rod (7) being fixedly connected to a third motor (38), the output shaft of the third motor (38) being fixedly connected to a third driving gear (39), the inner side wall of the bottom end of the rotating platform (8) being provided with a gear ring, the third driving gear (39) being meshed with the gear ring.

8. A coal spontaneous combustion monitoring device, comprising the coal pile surface gas concentration monitoring device according to any one of claims 1 to 7, characterized in that: The invention also comprises a vehicle body (1), wherein a wheel (4) is arranged at the bottom end of the vehicle body (1), a height adjustment part is fixedly connected to the top end of the vehicle body (1), a platform (6) is fixedly connected to the top end of the height adjustment part, the angle adjustment mechanism is fixedly arranged at the top end of the platform (6), a coal pile internal temperature detection mechanism is arranged at the bottom end of the platform (6), and a cab (2) and a counterweight (3) are arranged on the vehicle body (1), and the counterweight (3) is located at one end of the vehicle body (1) away from the angle adjustment mechanism.

9. A coal spontaneous combustion monitoring device according to claim 8, characterized in that: The internal temperature detection mechanism of the coal pile comprises a second motor (29), the second motor (29) is fixedly connected to one end of the bottom of the platform (6), the output shaft of the second motor (29) is fixedly connected to one end of a lead screw (30), the other end of the lead screw (30) is rotatably connected to a fixed seat (31), the fixed seat (31) is fixedly connected to the other end of the bottom of the platform (6), the lead screw (30) is threadedly connected to a slider (32), the top end of the slider (32) is in sliding contact with the bottom end of the platform (6), the bottom end of the slider (32) is fixedly connected to a fourth telescopic rod (33), the fourth telescopic rod (33) is vertically arranged and the bottom end is fixedly connected to a fifth telescopic rod (34), the fifth telescopic rod (34) is horizontally arranged and the telescopic end is fixedly connected to a temperature probe (35).

10. A coal spontaneous combustion monitoring device according to claim 8, characterized in that: The height adjustment portion comprises four first telescopic rods (5), the first telescopic rods (5) being arranged vertically and respectively located at the corners of the top end of the vehicle body (1), and the platform (6) being fixedly connected to the top ends of the four first telescopic rods (5).

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