Mine rescue convenient multi-parameter detector

Abstract

The present application relates to air detection and early warning technical field, specifically speaking, it is a kind of mine rescue portable multi-parameter detector;Including display box and the detection cylinder away from the display box;Sensor element is arranged in the detection cylinder;The display box can display and early warning to the detection data in air;Detection hole is uniformly arranged around the center on the end face of the detection cylinder;The detection hole orifice is fixedly connected with filter screen;The smaller the distance between the two holding strips is, the longer the distance from the detection cylinder to the display box is, under the condition of reducing the force of holding the two holding strips, the first spring will push the two lower sliding blocks away from each other, so that the distance between the two holding strips increases, the scissors mechanism is retracted, so that the distance from the detection cylinder to the display box is shorter, so the operator can adjust the distance and position of the detection cylinder from the worker according to the space of roadway and detection demand, so as to timely respond to the detection demand of complex environment in mine.

Description

Technical Field

[0001] This invention relates to the field of air detection and early warning technology, specifically a portable multi-parameter detector for mine rescue. Background Technology

[0002] Coal mines contain methane gas, the main components of which are methane, ethane, carbon monoxide, carbon dioxide, hydrogen sulfide, nitrogen, and oxygen. When the methane concentration reaches the explosive limit, even a small ignition source can trigger an underground explosion. Before formal mining operations begin, underground coal mines require workers to enter and conduct surveys to ensure the environment can support normal mining operations. During these surveys, gas detectors must be carried at all times to prevent harm from high concentrations of toxic gases in the mine.

[0003] During the survey process, it is necessary to carry a portable multi-parameter detector with you to achieve the purpose of monitoring and early warning of air composition in the tunnel. The working principle of the multi-parameter detector is that it is equipped with one or more of the following sensors: methane sensor, ethane sensor, carbon monoxide sensor, carbon dioxide sensor, hydrogen sulfide sensor, nitrogen sensor, oxygen sensor and humidity sensor. It uses multiple sensors to detect the composition of air and works with an alarm to achieve air monitoring and early warning in the tunnel. To improve safety, the detection end and display end of the multi-parameter detector are connected by a grip rod. Holding the grip rod moves the multi-parameter detector away from the worker and towards the detection position, thus achieving early warning. The space in the roadway is irregular. If the grip rod of the multi-parameter detector is too short, it will affect the safety of the worker and will not be able to achieve early warning. If the grip rod of the multi-parameter detector is too long, it will affect the worker's operation and movement in the roadway. In addition, to improve the detection accuracy of multi-parameter detectors, an air pump is usually installed in the detector. The air pump can draw gas from the roadway into the detector and extract the gas after detection, thereby improving the detector's active detection capability and early warning accuracy, especially in environments with poor airflow in the roadway. The air pump in the multi-parameter detector consumes a lot of power during long-term operation, and the power stored in the detector is only enough to operate the sensors. Making the multi-parameter detector too large would make it inconvenient to carry. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes a portable multi-parameter detector for mine rescue. The smaller the distance between the two gripping bars, the longer the distance from the detection cylinder to the display box. When the force applied to the gripping bars is reduced, the first spring pushes the two lower sliders away from each other, increasing the distance between the gripping bars and causing the scissor mechanism to retract, thus shortening the distance from the detection cylinder to the display box. This allows operators to adjust the distance and position of the detection cylinder relative to themselves based on the space of the tunnel and the detection requirements, thereby promptly addressing the detection needs of complex underground environments.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A portable multi-parameter detector for mine rescue, comprising a display box and a detection cylinder located away from the display box; a sensor element is disposed inside the detection cylinder; the display box can display and provide early warning of detection data in the air; detection holes are uniformly arranged around the center on the end face of the detection cylinder; a filter screen is fixedly connected to the opening of the detection hole; a sensor element is fixedly connected to the inner wall of the detection hole; an upper rectangular sleeve is fixedly connected to the arc-shaped outer wall of the detection cylinder near the display box; the outer wall of the display box near the detection cylinder is fixedly connected to the upper rectangular sleeve. The corresponding lower rectangular sleeve; a lower rectangular groove communicating with the interior of the lower rectangular sleeve is provided through the interior of the display box; a lower sliding groove is slidably connected to the inner wall of the lower rectangular groove; two lower sliding blocks are slidably connected in the lower sliding groove; spring holes are provided on the side of the lower sliding blocks that are close to each other; the bottom of the two spring holes are connected by a first spring; a grip strip is fixedly connected to the side of the lower sliding block away from the lower rectangular sleeve; the grip strip extends outward through the lower rectangular groove; an upper sliding groove is provided inside the upper rectangular sleeve; two upper sliding blocks are slidably connected in the upper sliding groove; the two upper sliding blocks are connected to the two lower sliding blocks by a scissor mechanism.

[0006] Preferably, the sum of the depths of the upper rectangular sleeve and the lower rectangular sleeve is greater than the length of the scissor mechanism after it is folded up.

[0007] Preferably, the inner side of the two gripping strips away from the lower slider is inclined with a slope.

[0008] Preferably, the detection cylinder has protruding rings at the edges of both ends; protective covers are provided at the openings of the two protruding rings that are far apart from each other; a central hole is provided along the axial direction at the center of the detection cylinder; a central shaft is rotatably connected inside the central hole; a coiling spring groove and a winding groove communicating with the central hole are provided inside the detection cylinder; the inner wall of the coiling spring groove is connected to the outside of the central shaft through a first coiling spring; a winding hole communicating with the winding groove is provided on the arc-shaped outer wall of the detection cylinder near the display box; a rope passes through the winding hole; one end of the rope is connected to the outside of the central shaft, and the other end is fixed to the display box; the end of the central shaft extends to the inside of the protruding ring and is connected to the fan blade; the airflow direction after the fan blade at the end of the central shaft rotates is consistent.

[0009] Preferably, the fan blades are able to contact the outer surface of the filter screen.

[0010] Preferably, a movable sleeve is movably fitted at the middle section of the central shaft; the movable sleeve is rotatably connected inside the detection cylinder; the outer wall of the movable sleeve is connected to the inner wall of the spring groove via a first coil spring; the outer wall of the movable sleeve is fixedly connected to one end of the rope; a central sliding groove is provided along the axial direction on the outer wall of the middle section of the central shaft; a central sliding block is slidably connected in the central sliding groove; the central sliding block is fixedly connected to the inner wall of the movable sleeve; an annular corrugated groove is provided on the outer wall of the central shaft; a block-shaped corrugated block is movably connected in the corrugated groove; the corrugated block is fixedly connected to the inner wall of the central hole; the length of the central shaft is greater than the length of the central hole.

[0011] Preferably, the inner wall of the central hole is provided with a rotating groove communicating with the detection hole; a turntable is rotatably connected in the rotating groove; a disk block is fixedly connected to the inner hole of the turntable; the disk block is slidably connected in the middle sliding groove; and an opening and closing hole is provided through the end face of the turntable.

[0012] Preferably, the opening and closing holes are staggered from the fan blades; the diameter of the opening and closing holes is larger than the distance between two adjacent detection holes.

[0013] Preferably, the diameter of the winding hole is adapted to the outer diameter of the rope; the end of the winding hole is flared.

[0014] Preferably, the arc-shaped outer wall of the detection cylinder is provided with a replacement groove communicating with the detection hole; a replacement cover is installed in the replacement groove; the replacement cover is connected to the detection cylinder by bolts.

[0015] The beneficial effects of this invention are as follows: 1. In this invention, the smaller the distance between the two gripping bars, the longer the distance from the detection cylinder to the display box. When the force of gripping the two gripping bars is reduced, the first spring will push the two lower sliders away from each other, thereby increasing the distance between the two gripping bars and realizing the contraction of the scissor mechanism, which shortens the distance from the detection cylinder to the display box. In this way, the operator can adjust the distance and position of the detection cylinder from the operator in a timely manner according to the space of the tunnel and the detection needs, so as to respond to the detection needs of the complex underground environment in a timely manner.

[0016] 2. During the reverse rotation of the central shaft of this invention, the rope is wound up. The reverse rotation of the central shaft also drives the fan blades to rotate in the opposite direction. The reverse rotation of the fan blades changes the airflow direction, causing the airflow to pass through the detection hole in the opposite direction. When the grip strip is squeezed and released back and forth, the airflow passes through the detection hole back and forth. In this way, the impurities and debris attached to the filter screen are washed away by the backflow, ensuring the cleanliness of the filter screen and avoiding the situation where the filter screen is blocked and affects the airflow of the detection hole, making the detection process of the detector more stable.

[0017] 3. As the turntable rotates, the opening and closing hole of this invention will sequentially connect with and be staggered with multiple detection holes. The fan blades rotate to generate wind power. Under limited wind power, the wind power is concentrated in the detection holes connected with the opening and closing hole, thereby increasing the flow rate of the wind through the sensor element in the detection hole and improving the detection effect of the sensor element on the components in the air. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of the folded version of the present invention; Figure 2 This is a perspective view of the unfolding process of the present invention; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a perspective view of the scissor mechanism in this invention; Figure 5 This is a cross-sectional view of the present invention; Figure 6 This is a cross-sectional view of the detection cylinder in this invention; Figure 7 yes Figure 6 Enlarged view of point B in the middle; Figure 8 This is a structural diagram of the turntable in this invention; Figure 9 This is a partial sectional view of the central axis in this invention.

[0020] In the diagram: Display box 1, lower rectangular groove 11, lower sliding groove 12, detection cylinder 2, sensor element 21, detection hole 22, filter screen 23, center hole 24, coil spring groove 25, winding groove 26, winding hole 27, rotating groove 28, replacement groove 29, replacement cover 291, bolt 292, upper rectangular sleeve 3, upper sliding groove 31, lower rectangular sleeve 4, scissor mechanism 5, lower slider 51, spring hole 52, first spring 53, grip bar 54, upper slider 55, inclined surface 56, convex ring 6, protective cover 61, central shaft 7, fan blade 71, middle sliding groove 72, corrugated groove 73, corrugated block 74, movable sleeve 8, first coil spring 81, rope 82, middle slider 83, turntable 9, inner hole 91, disc 92, opening and closing hole 93. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 9 As shown, the present invention includes the following embodiments: Example 1: A portable multi-parameter detector for mine rescue includes a display box 1 and a detection cylinder 2 located away from the display box 1; the detection cylinder 2 is equipped with a sensor element 21 capable of detecting air composition; the display box 1 can display and provide early warning of the detection data in the air; the detection cylinder 2 has detection holes 22 evenly distributed around its center on its end face; a filter screen 23 is fixedly connected to the opening of the detection hole 22; the sensor element 21 is fixedly connected to the inner wall of the detection hole 22; an upper rectangular sleeve 3 is fixedly connected to the arc-shaped outer wall of the detection cylinder 2 near the display box 1; a lower rectangular sleeve 4 corresponding to the upper rectangular sleeve 3 is fixedly connected to the outer wall of the display box 1 near the detection cylinder 2; the display box 1... The interior of the upper rectangular sleeve 3 has a lower rectangular groove 11 that communicates with the interior of the lower rectangular sleeve 4. A lower sliding groove 12 is slidably connected to the inner wall of the lower rectangular groove 11. Two lower sliding blocks 51 are slidably connected in the lower sliding groove 12. Spring holes 52 are provided on the side of the lower sliding blocks 51 that are close to each other. The bottom of the two spring holes 52 are connected by a first spring 53. A grip strip 54 is fixedly connected to the side of the lower sliding block 51 that is away from the lower rectangular sleeve 4. The grip strip 54 extends outward through the lower rectangular groove 11. An upper sliding groove 31 is provided inside the upper rectangular sleeve 3. Two upper sliding blocks 55 are slidably connected in the upper sliding groove 31. The two upper sliding blocks 55 are connected to the two lower sliding blocks 51 by a scissor mechanism 5.

[0023] In this embodiment, the sum of the depths of the upper rectangular sleeve 3 and the lower rectangular sleeve 4 is greater than the length of the scissor mechanism 5 after it is folded up.

[0024] When air monitoring and early warning in the tunnel are required using a detector, one of the grip strips 54 is held by hand. When the two grip strips 54 are not pressed close together, they are at their maximum distance from each other, and the scissor mechanism 5 is in a folded state. The upper rectangular sleeve 3 and the lower rectangular sleeve 4 are in contact with each other, protecting the scissor mechanism 5 on the inside, achieving the purpose of protection. When it is necessary to control the detection cylinder 2 away from the display box 1, the two grip strips 54 are squeezed. As the two grip strips 54 are squeezed and brought closer together, the two lower sliders 51 will overcome the first spring 53 and move closer together within the sliding groove 12. A spring hole 52 is provided on the side of the two lower sliders 51 that is approaching each other for the first spring 53 to be placed. The ends of the scissor mechanism 5 are hinged to the lower slider 51 and the upper slider 55. As the two lower sliders 51 move closer together, they will cause the scissor mechanism 5 to unfold, thus moving the detection cylinder 2 away from the display box 1, and the upper rectangular sleeve 3 will detach from the lower rectangular sleeve 4. In the process of unfolding the scissor mechanism 5, the two upper sliders 55 will move closer to each other along the upper sliding groove 31. The smaller the distance between the two gripping strips 54, the longer the distance between the detection cylinder 2 and the display box 1. When the force of gripping the two gripping strips 54 is reduced, the first spring 53 will push the two lower sliders 51 away from each other, increasing the distance between the two gripping strips 54 and realizing the retraction of the scissor mechanism 5, making the distance between the detection cylinder 2 and the display box 1 shorter. In this way, the operator can adjust the distance and position of the detection cylinder 2 from the operator in a timely manner according to the space of the roadway and the detection needs, so as to respond to the detection needs of the complex underground environment in a timely manner. When the two gripping strips 54 are released directly, the two first springs 53 will push the two gripping strips 54 away from each other, the scissor mechanism 5 will fold up, the upper rectangular sleeve 3 will move closer to the lower rectangular sleeve 4, and the detection cylinder 2 will move closer to the display box 1, until the scissor mechanism 5 is covered by the upper rectangular sleeve 3 and the lower rectangular sleeve 4 after folding up, realizing the protection of the scissor mechanism 5. During the detection process, the gas passes through the filter screen 23 and enters the detection hole 22. A sensor element 21 is installed in the detection hole 22. The sensor element 21 can be one or more of the following types: methane sensor, ethane sensor, carbon monoxide sensor, carbon dioxide sensor, hydrogen sulfide sensor, nitrogen sensor, oxygen sensor, and humidity sensor. Multiple sensor elements 21 are used to detect the air composition in the tunnel. The detected data is transmitted to the analysis unit in the display box 1. The analysis unit analyzes the data and alarms the display unit for data that is not within the standard value range. The display screen on the display box 1 displays the data. Buttons on the display screen are used to adjust the range of the standard value. The alarm unit alarms the air in the tunnel to achieve air monitoring and early warning. The two upper sliders 55 are connected to the ends of the upper slide groove 31 by a first tension spring (not labeled in the figure) on their opposite sides. The two lower sliders 51 are connected to the ends of the lower slide groove 12 by a second tension spring (not labeled in the figure) on their opposite sides.

[0025] Example 2: The inner side of the two gripping strips 54 away from the lower slider 51 is provided with an inclined surface 56.

[0026] By squeezing the two gripping strips 54 together or releasing them, the distance between the two gripping strips 54 can be changed, thereby indirectly changing the distance between the detection cylinder 2 and the display box 1, and thus changing the overall length of the detector. After adjusting to the appropriate length, the two gripping strips 54 will be inserted into the underground roadway wall or ground where long-term monitoring is required while maintaining a constant distance between them. It is important to control the axis of the installed detection cylinder 2 to be in the same direction as the wind direction so that the air in the roadway can pass through the detection hole 22. Since the two gripping strips 54 are inserted into the inner wall or bottom wall of the roadway, the distance between the gripping strips 54 is restricted and cannot be expanded, thus locking the overall length of the detector. When it is necessary to pull out the gripping strips 54, the two gripping strips 54 are squeezed. The inner side of the two gripping strips 54 away from the lower slider 51 is inclined with a slope 56. Under the guidance of the slope 56, the gripping strips 54 are easier to pull out of the installation position.

[0027] Example 3: The detection cylinder 2 has protruding rings 6 at both ends of its edge; protective covers 61 are provided at the openings of the two protruding rings 6 that are far apart from each other; a central hole 24 is provided along the axial direction at the center of the detection cylinder 2; a central shaft 7 is rotatably connected inside the central hole 24; a coiling groove 25 and a winding groove 26 communicating with the central hole 24 are provided inside the detection cylinder 2; the inner wall of the coiling groove 25 is connected to the outside of the central shaft 7 through a first coiling spring 81; a winding hole 27 communicating with the winding groove 26 is provided on the arc-shaped outer wall of the detection cylinder 2 near the display box 1; a rope 82 passes through the winding hole 27; one end of the rope 82 is connected to the outside of the central shaft 7, and the other end is fixed to the display box 1; the end of the central shaft 7 extends to the inside of the protruding rings 6 and is connected to a fan blade 71; the wind direction of the fan blade 71 at the end of the central shaft 7 after rotation is consistent.

[0028] In this embodiment, the fan blade 71 can contact the outer surface of the filter screen 23.

[0029] When the two grip strips 54 are squeezed, the scissor mechanism 5 unfolds, causing the detection cylinder 2 to move away from the display box 1. The other end of the cord 82 is fixed to the display box 1, so the cord 82 is pulled, causing it to unwind on the outer wall of the central shaft 7. During the unwinding process, the cord 82 overcomes the torque of the first coil spring 81. As the central shaft 7 rotates, it causes the fan blade 71 to rotate in the forward direction. The forward-rotating fan blade 71 causes the surrounding air to enter from one end of the detection hole 22 and exit from the other end. As the air passes through the corresponding detection hole 22, it comes into contact with the corresponding sensor element 21, realizing air monitoring and early warning. When the force of gripping the two grip strips 54 is reduced, the scissor mechanism 5 retracts, and the detection cylinder 2 moves closer to the display box 1. The first coil spring 81 then... The central shaft 7 rotates in the reverse direction, which winds up the rope 82 and drives the fan blade 71 to rotate in the reverse direction. The fan blade 71 changes the airflow direction, causing the airflow to pass through the detection hole 22 in the opposite direction. When the grip bar 54 is squeezed and released back and forth, the airflow passes through the detection hole 22 back and forth. Thus, the impurities and debris attached to the filter screen 23 are washed away by the backflow, ensuring the cleanliness of the filter screen 23 and preventing the filter screen 23 from becoming clogged and affecting the airflow in the detection hole 22, making the detection process of the instrument more stable. Furthermore, the fan blade 71 is in contact with the outer surface of the filter screen 23, so it can scrape away the debris on the surface of the filter screen 23. With the impact of the airflow, the impurities are quickly detached.

[0030] Example 4: A movable sleeve 8 is provided at the middle section of the central shaft 7; the movable sleeve 8 is rotatably connected inside the detection cylinder 2; the outer wall of the movable sleeve 8 is connected to the inner wall of the spring groove 25 through a first coil spring 81; the outer wall of the movable sleeve 8 is fixedly connected to one end of the rope 82; a central sliding groove 72 is provided along the axial direction on the outer wall of the middle section of the central shaft 7; a central sliding block 83 is slidably connected in the central sliding groove 72; the central sliding block 83 is fixedly connected to the inner wall of the movable sleeve 8; an annular corrugated groove 73 is provided on the outer wall of the central shaft 7; a block-shaped corrugated block 74 is movably connected in the corrugated groove 73; the corrugated block 74 is fixedly connected to the inner wall of the central hole 24; the length of the central shaft 7 is greater than the length of the central hole 24.

[0031] During the rotation of the movable sleeve 8, the middle slider 83 fixed to the inner wall will rotate. The middle slider 83 is slidably connected in the middle groove 72. Therefore, the middle slider 83 will drive the central shaft 7 to rotate as the movable sleeve 8 rotates. During the rotation of the central shaft 7, the annular corrugated groove 73 on the outer wall will rotate synchronously. The annular corrugated groove 73 is movably connected to the block-shaped corrugated block 74. With the cooperation of the corrugated block 74 and the corrugated groove 73, the central shaft 7 will also move back and forth axially during the rotation. The fan blade 71 is fixed to the end of the central shaft 7. The fan blade 71 will move back and forth axially with the rotation of the central shaft 7. The fan blade 71 intermittently contacts the outer surface of the filter screen 23 to achieve scraping. As the fan blade 71 moves back and forth axially with the central shaft 7, the impurities on the fan blade 71 will fall off under high-frequency vibration.

[0032] Example 5: A rotating groove 28 communicating with the detection hole 22 is provided on the inner wall of the central hole 24; a turntable 9 is rotatably connected in the rotating groove 28; a disk block 92 is fixedly connected to the inner hole 91 of the turntable 9; the disk block 92 is slidably connected to the middle sliding groove 72; an opening and closing hole 93 is provided through the end face of the turntable 9.

[0033] In this embodiment, the opening / closing hole 93 is staggered from the fan blade 71; the diameter of the opening / closing hole 93 is larger than the distance between two adjacent detection holes 22.

[0034] During the rotation of the central shaft 7, the central shaft 7 drives the central sliding groove 72 on the arc-shaped outer wall to rotate. The disk 92 is slidably connected inside the central sliding groove 72. Therefore, the rotation of the central shaft 7 drives the disk 92 to rotate. The disk 92 with the inner hole 91 is fixedly connected, so the rotation of the central shaft 7 drives the turntable 9 to rotate. The turntable 9 is connected to the rotating groove 28. Therefore, the rotation of the turntable 9 drives the opening and closing hole 93 to rotate synchronously in the rotating groove 28. As the turntable 9 rotates, the opening and closing hole 93 will connect with multiple detection holes 22 in sequence and be staggered. The fan blade 71 rotates to generate wind. Under limited wind force, the wind force is concentrated in the detection hole 22 connected with the opening and closing hole 93. This increases the flow rate of the wind through the sensor element 21 in the detection hole 22, thereby improving the detection effect of the sensor element 21 on the components in the air. Because the opening / closing hole 93 is staggered from the fan blade 71, when the opening / closing hole 93 is staggered from the corresponding detection hole 22, the outer surface of the corresponding filter screen 23 on the detection hole 22 with the opening / closing hole 93 staggered is scraped and cleaned by the fan blade 71. This avoids the situation where airflow on the filter screen 23 causes a large adhesion that affects cleaning, thus further improving the foreign matter removal effect on the filter screen 23 and ensuring the unobstructed flow of the detection hole 22. Since the diameter of the opening / closing hole 93 is larger than the distance between two adjacent detection holes 22, at least one detection hole 22 is connected to the opening / closing hole 93, avoiding the situation where the detection hole 22 is completely blocked. In addition, the detection hole 22 staggered from the opening / closing hole 93 is temporarily stored under the action of the previously entered gas, increasing the detection time of the sensor element 21 for the gas in the detection hole 22, and further improving the accuracy of the detector.

[0035] Example 6: The diameter of the winding hole 27 is adapted to the outer diameter of the rope 82; the end of the winding hole 27 is flared.

[0036] During the winding process of the central shaft 7, the debris attached to the outer surface of the rope 82 is brushed off by the opening of the winding hole 27, so that the rope 82 enters the winding groove 26 after self-cleaning. This prevents debris from being brought into the winding groove 26 and causing blockage as the rope 82 is wound. The debris located at the opening of the winding hole 27 is carried away as the rope 82 moves outward.

[0037] Example 7: The outer wall of the detection cylinder 2 is provided with a replacement groove 29 that communicates with the detection hole 22; a replacement cover 291 is installed in the replacement groove 29; the replacement cover 291 is connected to the detection cylinder 2 by bolts 292.

[0038] The sensor element 21 inside the detection cylinder 2 is not unique. Before using the detector, the bolt 292 can be loosened to unlock the replacement cover 291 from the replacement slot 29, and the replacement cover 291 can be removed from the replacement slot 29. Then, the sensor element 21 can be removed from the detection hole 22 for replacement. After the replacement, the sensor element 21 is replaced and the replacement cover 291 is closed again. The bolt 292 is then tightened. This allows the detector to perform multi-parameter detection on multiple components in the air, resulting in a wider detection range.

[0039] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance. In the description of the present invention, "fixed connection" refers to a fixed connection.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable multi-parameter detector for mine rescue, comprising a display box and a detection cylinder located away from the display box; the detection cylinder is equipped with a sensor element capable of detecting air composition; the display box is capable of displaying and issuing warnings for the detection data in the air; characterized in that: The detection cylinder has detection holes evenly distributed around its center on its end face; a filter screen is fixedly connected to the opening of each detection hole; a sensor element is fixedly connected to the inner wall of each detection hole; an upper rectangular sleeve is fixedly connected to the arc-shaped outer wall of the detection cylinder near the display box; a lower rectangular sleeve corresponding to the upper rectangular sleeve is fixedly connected to the outer wall of the display box near the detection cylinder; a lower rectangular groove communicating with the interior of the lower rectangular sleeve is distributed through the interior of the display box; a lower sliding groove is slidably connected to the inner wall of the lower rectangular groove; two lower sliding blocks are slidably connected in the lower sliding groove; spring holes are provided on the side of the lower sliding blocks that are close to each other; the bottoms of the two spring holes are connected by a first spring; a gripping strip is fixedly connected to the side of the lower sliding block away from the lower rectangular sleeve; the gripping strip extends outward through the lower rectangular groove; an upper sliding groove is provided inside the upper rectangular sleeve; two upper sliding blocks are slidably connected in the upper sliding groove; the two upper sliding blocks are connected to the two lower sliding blocks by a scissor mechanism.

2. The portable multi-parameter detector for mine rescue according to claim 1, characterized in that: The sum of the depths of the upper and lower rectangular sleeves is greater than the length of the scissor mechanism after it is folded up.

3. The portable multi-parameter detector for mine rescue according to claim 1, characterized in that: The two gripping strips have inclined surfaces on their inner sides at the ends away from the lower slider.

4. The portable multi-parameter detector for mine rescue according to claim 1, characterized in that: The detection cylinder has protruding rings at both ends of its edge; protective covers are provided at the openings of the two protruding rings that are far apart from each other; a central hole is provided along the axial direction at the center of the detection cylinder; a central shaft is rotatably connected to the central hole; a coiling spring groove and a winding groove are provided inside the detection cylinder and communicate with the central hole; the inner wall of the coiling spring groove is connected to the outside of the central shaft through a first coiling spring; a winding hole is provided on the arc-shaped outer wall of the detection cylinder near the display box and communicates with the winding groove; a rope passes through the winding hole; one end of the rope is connected to the outside of the central shaft, and the other end is fixed to the display box; the end of the central shaft extends to the inside of the protruding ring and is connected to a fan blade; the airflow direction after the fan blade at the end of the central shaft rotates is consistent.

5. A portable multi-parameter detector for mine rescue according to claim 4, characterized in that: The fan blades can contact the outer surface of the filter screen.

6. A portable multi-parameter detector for mine rescue according to claim 4, characterized in that: A movable sleeve is movably fitted at the middle section of the central shaft; the movable sleeve is rotatably connected inside the detection cylinder; the outer wall of the movable sleeve is connected to the inner wall of the spring groove via a first coil spring; the outer wall of the movable sleeve is fixedly connected to one end of the rope; a central sliding groove is provided along the axial direction on the outer wall of the middle section of the central shaft; a central sliding block is slidably connected in the central sliding groove; the central sliding block is fixedly connected to the inner wall of the movable sleeve; an annular corrugated groove is provided on the outer wall of the central shaft; a block-shaped corrugated block is movably connected in the corrugated groove; the corrugated block is fixedly connected to the inner wall of the central hole; the length of the central shaft is greater than the length of the central hole.

7. A portable multi-parameter detector for mine rescue according to claim 6, characterized in that: The inner wall of the central hole is provided with a rotating groove that communicates with the detection hole; a turntable is rotatably connected in the rotating groove; a disk block is fixedly connected to the inner hole of the turntable; the disk block is slidably connected in the middle sliding groove; and an opening and closing hole is provided through the end face of the turntable.

8. A portable multi-parameter detector for mine rescue according to claim 7, characterized in that: The opening and closing holes are staggered from the fan blades; the diameter of the opening and closing holes is larger than the distance between two adjacent detection holes.

9. A portable multi-parameter detector for mine rescue according to claim 4, characterized in that: The diameter of the winding hole is adapted to the outer diameter of the rope; the end of the winding hole is flared.

10. A portable multi-parameter detector for mine rescue according to claim 1, characterized in that: The outer wall of the detection cylinder is provided with a replacement groove that communicates with the detection hole; a replacement cover is installed in the replacement groove; the replacement cover is connected to the detection cylinder by bolts.

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