Gas alarm metering detection device

Abstract

The invention relates to the technical field of alarm detection, in particular to a gas alarm metering detection device which comprises a metering detection box and a conveying frame arranged in front of the metering detection box, a conveying mechanism used for conveying a gas alarm is arranged on the conveying frame, and a discharging table is fixedly connected to the portion, located at the discharging end of the conveying mechanism, of the side wall of the conveying frame. Through the arrangement of the structure, after detection of the gas alarm is completed, the gas alarm can be conveyed to the position beside the fixing cylinder through the conveying mechanism, meanwhile, the inserting rod is extruded into the gas alarm, the gas alarm is conveyed to the position beside the fixing cylinder through the conveying mechanism, and the gas alarm is conveyed to the position below the fixing cylinder through the conveying mechanism. And then the gas alarm can be overturned to a certain angle through the driving mechanism and then pushed onto the material plate, automatic arrangement of the detected gas alarm can be achieved, the gas alarm can be obliquely placed on the material plate, and more storage space can be saved.

Description

Technical Field

[0001] The present invention relates to the technical field of alarm detection, and in particular to a gas alarm metering detection device. Background Art

[0002] A gas alarm is a gas leak detection alarm instrument. When flammable or toxic gas leaks in an industrial environment and the gas alarm detects that the gas concentration reaches the critical point set by the explosion or poisoning alarm, the alarm will send out an alarm signal to remind workers to take safety measures and start the exhaust, cut-off, and spray systems to prevent explosions, fires, and poisoning accidents, thereby ensuring safe production. However, after the gas alarm is produced, performance testing is required to ensure product quality.

[0003] The mining gas alarm detection device disclosed in the prior art with publication number CN116519890B transports the gas alarm to the gas storage bin via a conveyor belt, pushes the gas alarm into the gas chamber for detection via a servo hydraulic cylinder, and automatically loads and unloads materials, thereby automatically replenishing gas into the gas chamber and stirring the gas inside the gas chamber, thereby achieving uninterrupted circulation operation, improving detection efficiency, facilitating test gas replenishment, and ensuring uniform mixing of the gas inside the gas chamber.

[0004] Although the above-mentioned device can realize automatic detection of gas alarms, there are still some defects in the actual detection process. Due to the lack of unloading structure on the metering and detection device, after the gas alarm detection is completed, workers are required to place the gas alarms one by one on the transfer rack, which is not only time-consuming and labor-intensive, but also greatly reduces the convenience of the device.

[0005] Therefore, a gas alarm metering and detection device is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a gas alarm metering and detection device.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a gas alarm metering and detection device, comprising a metering and detection box, and a conveying frame arranged in front of the metering and detection box, the conveying frame is provided with a conveying mechanism for conveying the gas alarm, the side wall of the conveying frame and the unloading end of the conveying mechanism are fixedly connected with a unloading platform, the side wall of the unloading platform and the rear plate located at the rear side of the conveying frame are fixedly connected with the back plate, the top of the back plate is slidably connected with an L-shaped plate, the inner side of the L-shaped plate is provided with an arc groove, the inner side of the arc groove is slidably connected with an arc block, the side wall of the arc block is fixedly connected with a fixed cylinder, the front side of the fixed cylinder is slidably connected with an insertion rod for inserting the inner side of the gas alarm, and the front end of the insertion rod is set to a smooth arc surface, the outer wall of the L-shaped plate is provided with an L-shaped groove, the rear side of the L-shaped groove is slidably connected with a sliding rod, a pull rope is fixedly connected between the sliding rod and the arc block, and the rear plate is provided with a driving mechanism for first pushing the sliding rod and then pushing the L-shaped plate to move.

[0008] In the above technical solution, further, an upper spring is fixedly connected between the inner side of the fixed cylinder and the side wall of the insertion rod, the L-shaped groove is communicated with the top of the arc-shaped groove, a guide roller is fixedly connected to the top of the L-shaped groove relative to the upper position of the arc-shaped groove, the pull rope passes over the roller in the guide roller, a return spring is fixedly connected between the bottom end of the arc-shaped groove and the arc block, and a limiting plate is fixedly connected to the top of the conveying frame and at a position corresponding to the L-shaped plate.

[0009] In the above technical solution, further, the driving mechanism includes an upper electric telescopic cylinder, which is fixedly connected to the top of the rear plate, and the output end of the upper electric telescopic cylinder is fixedly connected to the side plate, and the front side of the side plate is fixedly connected to an L-shaped block for pushing the L-shaped plate to move, and the top of the L-shaped block is fixedly connected to a top rod for pushing the sliding rod to move.

[0010] In the above technical solution, further, a sliding groove is provided on the rear side of the L-shaped plate, an L-shaped rod is slidably connected to the inner side of the sliding groove, and a limiting groove is provided on the top of the rear plate relative to the position above the L-shaped rod, a lower spring is fixedly connected between the top of the L-shaped rod and the top of the sliding groove, the bottom end of the L-shaped rod is inserted into the inner side of the limiting groove, and the L-shaped block is tilted away from the side of the L-shaped rod.

[0011] In the above technical solution, further, a movable groove is opened at the top of the rear plate, a movable plate is fixedly connected to the bottom end of the L-shaped plate relative to the inner position of the movable groove, and a return spring is fixedly connected between the side wall of the movable plate and the inner side of the movable groove.

[0012] In the above technical solution, further, the side wall of the L-shaped plate is slidably connected to a right-angle block with an inclined surface, the side wall of the L-shaped plate is provided with a vertical groove, the inner side of the vertical groove is slidably connected to an L-shaped extrusion rod for extruding the inclined surface of the right-angle block, the side end of the L-shaped extrusion rod is set as a smooth arc surface, the bottom end of the side wall of the arc block is fixedly connected to a push plate for pushing the L-shaped extrusion rod to slide, and the front side of the right-angle block is fixedly connected to a push block.

[0013] In the above technical solution, further, a reset groove is opened on the side wall of the L-shaped plate, a reset plate is fixedly connected to the side wall of the right-angle block relative to the inner side of the reset groove, and a push spring is fixedly connected between the inner side of the reset groove and the side wall of the reset plate.

[0014] In the above technical scheme, further, a material plate is provided at the top of the unloading platform, and a plurality of placement plates are equidistantly and obliquely fixedly connected to the top of the material plate, a touch sensor is fixedly connected to the top of the unloading platform, and a lower electric telescopic cylinder is fixedly connected to the bottom of the unloading platform, and a through groove is opened through the bottom of the unloading platform, and a T-shaped plate for inserting into the material plate handle is slidably connected to the inner side of the through groove, and the output end of the lower electric telescopic cylinder is fixedly connected to the side wall of the T-shaped plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges structures such as a fixed cylinder, an arc groove, an arc block and a driving mechanism. After the gas alarm is detected, the gas alarm can be transported to the side of the fixed cylinder through the conveying mechanism, and the insertion rod can be squeezed into the gas alarm. Then, the gas alarm can be flipped to a certain angle and pushed into the material plate through the driving mechanism. Not only can the gas alarms that have been detected be automatically sorted, but the gas alarm can also be placed on the material plate at an angle, which can save more storage space.

[0016] 2. The present invention, through the arrangement of the lower electric telescopic cylinder, T-plate and touch sensor, can automatically change the position of the material plate after each row of gas alarms on the material plate is fully placed, thereby eliminating the need for workers to make adjustments and further improving the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front three-dimensional structure of the measurement and detection device of the present invention; Figure 2 It is a rear perspective structural diagram of the measuring and detecting device of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the unloading platform and the rear plate of the present invention when viewed from above; Figure 4 It is a partially cutaway three-dimensional structural schematic diagram of the upper electric telescopic cylinder and the rear plate separated from each other according to the present invention; Figure 5The appended Figure 4 A schematic diagram of the partially enlarged structure at center A; Figure 6 It is a schematic diagram of a partially cutaway three-dimensional structure of the fixing cylinder of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the side surface of the rear plate of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the L-shaped plate of the present invention when viewed from top.

[0018] In the figure: 1. metering and testing box; 2. conveying frame; 3. conveying mechanism; 4. unloading table; 5. rear plate; 6. L-shaped plate; 7. arc groove; 8. arc block; 9. fixed cylinder; 10. plug rod; 11. L-shaped groove; 12. slide rod; 13. pull rope; 14. upper spring; 15. guide roller; 16. reset spring; 17. limit plate; 18. upper electric telescopic cylinder; 19. side plate; 20. L-shaped block; 21. push rod; 22. L-shaped rod; 23. limit groove; 24. lower spring; 25. moving groove; 26. moving plate; 27. return spring; 28. right-angle block; 29. ​​L-shaped squeezing rod; 30. push plate; 31. push block; 32. reset plate; 33. push spring; 34. material plate; 35. placement plate; 36. touch sensor; 37. lower electric telescopic cylinder; 38. T-shaped plate. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] like Figure 1-8A gas alarm metering and detection device shown in the figure includes a metering and detection box 1, which can automatically perform metering and detection on the gas alarm, which is a mature technology in the prior art and will not be described in detail here, and a conveying frame 2 arranged in front of the metering and detection box 1, and a conveying mechanism 3 for conveying the gas alarm is provided on the conveying frame 2. The conveying mechanism 3 is mainly composed of structures such as a motor, a conveyor belt and a conveyor roller, and can perform intermittent conveying on the gas alarm, which is a mature technology in the prior art and will not be described in detail here. The side wall of the conveying frame 2 and the unloading end of the conveying mechanism 3 are fixedly connected with a unloading table 4, and the side wall of the unloading table 4 and A rear plate 5 is fixedly connected to the rear side of the conveying frame 2, and an L-shaped plate 6 is slidably connected to the top of the rear plate 5. An arc groove 7 is provided on the inner side of the L-shaped plate 6, and an arc block 8 is slidably connected to the inner side of the arc groove 7. A fixed cylinder 9 is fixedly connected to the side wall of the arc block 8. A plug rod 10 for inserting the inner side of the gas alarm is slidably connected to the front side of the fixed cylinder 9, and the front end of the plug rod 10 is set to a smooth arc surface. An L-shaped groove 11 is provided on the outer wall of the L-shaped plate 6, and a slide rod 12 is slidably connected to the rear side of the L-shaped groove 11. A pull rope 13 is fixedly connected between the slide rod 12 and the arc block 8. A driving mechanism for first pushing the slide rod 12 and then pushing the L-shaped plate 6 to move is provided on the rear plate 5; An upper spring 14 is fixedly connected between the inner side of the fixed cylinder 9 and the side wall of the insertion rod 10, and the upper spring 14 facilitates the insertion rod 10 to be pushed to reset. The L-shaped groove 11 is connected to the top of the arc groove 7. The top of the L-shaped groove 11 is fixedly connected with a guide roller 15 relative to the upper position of the arc groove 7. The pull rope 13 passes through the roller above the guide roller 15. The setting of the guide roller 15 can guide the sliding of the pull rope 13. A reset spring 16 is fixedly connected between the bottom end of the arc groove 7 and the arc block 8. The reset spring 16 facilitates the pulling of the arc block 8 to reset. A limit plate 17 is fixedly connected to the top of the conveying frame 2 and the corresponding position to the L-shaped plate 6. The setting of the limit plate 17 can limit the gas alarm on the conveying mechanism 3 to prevent the gas alarm from sliding forward when the insertion rod 10 pushes the gas alarm to flip. The driving mechanism includes an upper electric telescopic cylinder 18, which is fixedly connected to the top of the rear plate 5, and the output end of the upper electric telescopic cylinder 18 is fixedly connected to the side plate 19, and the front side of the side plate 19 is fixedly connected to an L-shaped block 20 for pushing the L-shaped plate 6 to move, and the top of the L-shaped block 20 is fixedly connected to a top rod 21 for pushing the slide rod 12 to move; During the metering and testing process of the gas alarm, the worker places the gas alarm to be tested on the conveyor belt of the conveying mechanism 3 in turn, and then moves them one by one to the side of the metering and testing box 1 under the intermittent conveyance of the conveying mechanism 3, and then inserts the gas alarm into the gas alarm through the detection mechanism on the metering and testing box 1 to perform metering and testing on the gas alarm. Subsequently, the tested gas alarm is transported one by one to the front side of the rear plate 5 under the conveyance of the conveying mechanism 3. At this time, under the action of the limit plate 17, the gas alarm is restricted from sliding forward. At the same time, under the conveyance of the conveying mechanism 3, the gas alarm squeezes the arc surface of the insertion rod 10, and then squeezes the insertion rod 10 to the inside of the fixed tube 9, and compresses the upper spring 14. Subsequently, when the detection end groove of the gas alarm moves to the position corresponding to the insertion rod 10, the squeezing of the insertion rod 10 will be released, and then the insertion rod 10 will be pushed to reset under the elastic force of the upper spring 14; Then the upper electric telescopic cylinder 18 can be controlled to start and drive the side plate 19 and the L-shaped block 20 to move, and at the same time drive the top rod 21 to move, thereby pushing the slide bar 12 to slide inside the L-shaped groove 11, and pulling the pull rope 13 to move, and then the pull rope 13, under the guidance of the guide roller 15, pulls the arc block 8 to slide upward along the arc groove 7, and at the same time drives the fixed cylinder 9 and the insertion rod 10 to flip upward along the arc groove 7, thereby driving the gas alarm to flip upward to a certain angle, and gradually stretching the reset spring 16, and then the lateral end of the L-shaped block 20 moves to the side of the L-shaped plate 6, and then through The L-shaped block 20 will push the L-shaped plate 6 to move, and at the same time drive the fixed cylinder 9 and the insertion rod 10 to move. At this time, the metering and detection box 1 completes the detection of the gas alarm, and the conveying mechanism 3 will start to continue to convey the gas alarm, so that under the thrust of the insertion rod 10 and the conveying of the conveying mechanism 3, the gas alarm will be driven to move onto the material plate 34 (the gap between the material plate 34 and the conveying mechanism 3 is small, and the gas alarm will not fall down), and drive the moving plate 26 to move, and gradually stretch the return spring 27, thereby pushing the gas alarm onto the material plate 34; Finally, another gas alarm that has completed detection on the conveying mechanism 3 moves to the front side of the rear plate 5, which limits the gas alarm on the material plate 34. Then the upper electric telescopic cylinder 18 can be controlled to reset. At this time, the gas alarm on the material plate 34 is restricted and cannot move to the side of the rear plate 5. Then, when the L-shaped plate 6 is reset, the arc surface of the insertion rod 10 is squeezed under the pulling force of the return spring 27, and the insertion rod 10 is squeezed into the concave hole at the detection end of the gas alarm. Then, when the insertion rod 10 is moved out, it is reset by the elastic force of the upper spring 14, and then the above operation can be repeated in reverse to reset and unload the next gas alarm.

[0022] In order to improve the stability of the device during operation, a slide groove is provided on the rear side of the L-shaped plate 6, and an L-shaped rod 22 is slidably connected to the inner side of the slide groove, and a limiting groove 23 is provided at the top of the rear plate 5 relative to the position above the L-shaped rod 22, and a lower spring 24 is fixedly connected between the top of the L-shaped rod 22 and the top of the slide groove, and the bottom end of the L-shaped rod 22 is inserted into the inner side of the limiting groove 23, and the L-shaped block 20 is tilted away from the side of the L-shaped rod 22; By setting the L-shaped rod 22, the limit groove 23 and the lower spring 24, a positioning effect can be played in the process of the top rod 21 pushing the slide rod 12 to slide, avoiding pushing the L-shaped plate 6 to move. At the same time, when the insertion rod 10 is about to complete the flipping of the gas alarm, the inclined surface of the side wall of the L-shaped block 20 will move to the top of the L-shaped rod 22, thereby gradually releasing the squeezing of the L-shaped rod 22, and then pulling the L-shaped rod 22 to gradually slide upward under the elastic force of the lower spring 24 to reset, thereby driving the L-shaped rod 22 to slide out of the inner side of the limit groove 23, thereby releasing the position restriction of the L-shaped plate 6, and then the L-shaped block 20 moves to the side of the L-shaped plate 6, thereby pushing the L-shaped plate 6 to move, ensuring that the gas alarm can be flipped, and repeating the above operation in reverse when resetting.

[0023] In order to be able to pull the L-shaped plate 6 for rapid reset, a movable groove 25 is opened at the top of the rear plate 5, and a movable plate 26 is fixedly connected to the bottom end of the L-shaped plate 6 relative to the inner position of the movable groove 25, and a return spring 27 is fixedly connected between the side wall of the movable plate 26 and the inner side of the movable groove 25. Through the arrangement of the movable groove 25, the movable plate 26 and the return spring 27, when the upper electric telescopic cylinder 18 is reset, the movable plate 26 and the L-shaped plate 6 can be pulled to reset by the elastic force of the return spring 27.

[0024] In order to be able to push the gas alarm onto the material plate 34 more smoothly, a right-angle block 28 with an inclined surface is slidably connected to the side wall of the L-shaped plate 6, and a vertical groove is provided on the side wall of the L-shaped plate 6. An L-shaped extrusion rod 29 for extruding the inclined surface of the right-angle block 28 is slidably connected to the inner side of the vertical groove. The side end of the L-shaped extrusion rod 29 is set as a smooth arc surface, and a push plate 30 for pushing the L-shaped extrusion rod 29 to slide is fixedly connected to the bottom end of the side wall of the arc block 8. A push block 31 is fixedly connected to the front side of the right-angle block 28. It should be noted here that the push block 31 is arranged at a height higher than the height of the gas alarm next to the right-angle block 28 to avoid hindering the normal delivery of the gas alarm by the conveying mechanism 3; A reset groove is provided on the side wall of the L-shaped plate 6, a reset plate 32 is fixedly connected to the side wall of the right-angle block 28 relative to the inner side of the reset groove, and a push spring 33 is fixedly connected between the inner side of the reset groove and the side wall of the reset plate 32; When the upper electric telescopic cylinder 18 is started and the slide bar 12 is pushed to move by the push rod 21, the arc block 8 is driven to move upward, and the push plate 30 on the arc block 8 drives the L-shaped extrusion rod 29 to move upward, and then the arc surface of the side end of the L-shaped extrusion rod 29 squeezes the inclined surface of the right-angle block 28, so that the right-angle block 28 slides forward, and at the same time drives the reset plate 32 to slide on the inner side of the reset groove, and gradually compresses the push spring 33, thereby driving the push block 31 to move forward, and moving the push block 31 to the side of the gas alarm display, and then when the L-shaped block 20 pushes the L-shaped plate 6 to move, the gas alarm is pushed to move by the thrust of the push block 31, and quickly pushed onto the material plate 34, and finally the above operation is repeated in reverse when resetting.

[0025] In order to automatically change the position of the material plate 34, a material plate 34 is provided at the top of the unloading platform 4, and a plurality of placement plates 35 are equidistantly and obliquely fixedly connected to the top of the material plate 34, a touch sensor 36 is fixedly connected to the top of the unloading platform 4, and a lower electric telescopic cylinder 37 is fixedly connected to the bottom of the unloading platform 4. A through groove is provided through the bottom of the unloading platform 4, and a T-shaped plate 38 for inserting into the handle of the material plate 34 is slidably connected to the inner side of the through groove, and the output end of the lower electric telescopic cylinder 37 is fixedly connected to the side wall of the T-shaped plate 38; After the gas alarms are pushed onto the material plate 34 one by one under the continuous drive of the upper electric telescopic cylinder 18, the gas alarms on the material plate 34 will be pushed to the side of the unloading platform 4. At this time, the cylinder on the gas alarm will touch the touch sensor 36, and then the touch sensor 36 will transmit the signal to the controller. The controller controls the lower electric telescopic cylinder 37 to start pushing the T-shaped plate 38 to move. Since the T-shaped plate 38 is inserted into the handle on the material plate 34, it will drive the material plate 34 to move. It should be noted here that the starting distance of the lower electric telescopic cylinder 37 can be controlled by PLC each time to ensure that the vacant position behind can be moved to the side of the conveying mechanism 3 each time, so that after each row of gas alarms on the material plate 34 is full, the position of the material plate 34 can be automatically changed, thereby improving the convenience of the device. Finally, when the material plate 34 is full, the material plate 34 can be lifted out, and the lower electric telescopic cylinder 37 can be controlled to reset, and then the handle on the empty material plate 34 can be inserted into the T-shaped plate 38.

[0026] The basic principles, main features and advantages of the present invention are shown and described above.

[0027] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A gas alarm metering and detection device, comprising a metering and detection box (1), and a conveying frame (2) arranged in front of the metering and detection box (1), wherein the conveying frame (2) is provided with a conveying mechanism (3) for conveying the gas alarm, characterized in that: A material unloading platform (4) is fixedly connected to the side wall of the conveying frame (2) and located at the unloading end of the conveying mechanism (3); a rear plate (5) is fixedly connected to the side wall of the unloading platform (4) and located at the rear side of the conveying frame (2); an L-shaped plate (6) is slidably connected to the top end of the rear plate (5); an arc-shaped groove (7) is provided on the inner side of the L-shaped plate (6); an arc-shaped block (8) is slidably connected to the inner side of the arc-shaped groove (7); a fixed cylinder (9) is fixedly connected to the side wall of the arc-shaped block (8); and the fixed cylinder ( 9) A plug rod (10) for inserting into the inner side of the gas alarm is slidably connected to the front side, and the front end of the plug rod (10) is set as a smooth arc surface. The outer wall of the L-shaped plate (6) is provided with an L-shaped groove (11). A slide rod (12) is slidably connected to the rear side of the L-shaped groove (11). A pull rope (13) is fixedly connected between the slide rod (12) and the arc block (8). The rear plate (5) is provided with a driving mechanism for first pushing the slide rod (12) and then pushing the L-shaped plate (6) to move.

2. A gas alarm metering and detection device according to claim 1, characterized in that: An upper spring (14) is fixedly connected between the inner side of the fixed cylinder (9) and the side wall of the insertion rod (10); the L-shaped groove (11) is connected to the top of the arc groove (7); a guide roller (15) is fixedly connected to the top of the L-shaped groove (11) relative to the upper position of the arc groove (7); the pull rope (13) passes through the top of the roller in the guide roller (15); a return spring (16) is fixedly connected between the bottom end of the arc groove (7) and the arc block (8); and a limit plate (17) is fixedly connected to the top of the conveying frame (2) and at a position corresponding to the L-shaped plate (6).

3. A gas alarm metering and detection device according to claim 1, characterized in that: The driving mechanism comprises an upper electric telescopic cylinder (18), the upper electric telescopic cylinder (18) being fixedly connected to the top end of the rear plate (5), the output end of the upper electric telescopic cylinder (18) being fixedly connected to a side plate (19), the front side of the side plate (19) being fixedly connected to an L-shaped block (20) for pushing the L-shaped plate (6) to move, and the top end of the L-shaped block (20) being fixedly connected to a push rod (21) for pushing the slide rod (12) to move.

4. A gas alarm metering and detection device according to claim 3, characterized in that: A slide groove is provided at the rear side of the L-shaped plate (6), an L-shaped rod (22) is slidably connected to the inner side of the slide groove, and a limiting groove (23) is provided at the top of the rear plate (5) relative to the position above the L-shaped rod (22), a lower spring (24) is fixedly connected between the top of the L-shaped rod (22) and the top of the slide groove, the bottom end of the L-shaped rod (22) is inserted into the inner side of the limiting groove (23), and the L-shaped block (20) is tilted away from the side of the L-shaped rod (22).

5. A gas alarm metering and detection device according to claim 3, characterized in that: The top end of the rear plate (5) is provided with a movable groove (25), the bottom end of the L-shaped plate (6) is fixedly connected with a movable plate (26) relative to the inner side of the movable groove (25), and a return spring (27) is fixedly connected between the side wall of the movable plate (26) and the inner side of the movable groove (25).

6. A gas alarm metering and detection device according to claim 1, characterized in that: The side wall of the L-shaped plate (6) is slidably connected to a right-angle block (28) having an inclined surface; the side wall of the L-shaped plate (6) is provided with a vertical groove; an L-shaped extrusion rod (29) for extruding the inclined surface of the right-angle block (28) is slidably connected to the inner side of the vertical groove; the side end of the L-shaped extrusion rod (29) is arranged as a smooth arc surface; a push plate (30) for pushing the L-shaped extrusion rod (29) to slide is fixedly connected to the bottom end of the side wall of the arc block (8); and a push block (31) is fixedly connected to the front side of the right-angle block (28).

7. A gas alarm metering and detection device according to claim 6, characterized in that: The side wall of the L-shaped plate (6) is provided with a reset groove, the side wall of the right-angle block (28) is fixedly connected with a reset plate (32) at a position relative to the inner side of the reset groove, and a push spring (33) is fixedly connected between the inner side of the reset groove and the side wall of the reset plate (32).

8. A gas alarm metering and detection device according to claim 1, characterized in that: The top of the unloading platform (4) is provided with a material plate (34), the top of the material plate (34) is equidistantly and obliquely fixedly connected to a plurality of placement plates (35), the top of the unloading platform (4) is fixedly connected to a touch sensor (36), the bottom of the unloading platform (4) is fixedly connected to a lower electric telescopic cylinder (37), a through slot is formed through the bottom of the unloading platform (4), a T-shaped plate (38) for inserting into a handle of the material plate (34) is slidably connected to the inner side of the through slot, and the output end of the lower electric telescopic cylinder (37) is fixedly connected to the side wall of the T-shaped plate (38).

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