A segmented sampling and detection structure for atmospheric particulate matter concentration

Abstract

The present invention discloses a segmented sampling detection structure for atmospheric particulate matter concentration, which relates to the field of atmospheric particulate matter concentration detection, and includes a detection substrate, wherein a first detection sampling segment is installed at the upper end of the detection substrate, and a retractable structure is formed between the first detection sampling segment and the detection substrate through a built-in electric push rod. In the segmented sampling detection structure for atmospheric particulate matter concentration, the assembly of the second detection sampling segment does not require any positioning operation structure, and the self-positioning working state can be realized by simply plugging the second detection sampling segment into the upper end of the first detection sampling segment. When the overall device is exposed to the influence of wind force and the like at high altitude, the second detection sampling segment will rotate with fine adjustment of the force angle, and then self-locking processing is performed under the state of pressure of the device through the auxiliary self-locking structure, that is, the self-locking of the device under pressure will not appear loose or fall off, so that the device can be quickly assembled for segmented sampling, and can be quickly disassembled and separated later.

Description

Technical Field

[0001] The invention relates to the technical field of atmospheric particle concentration detection, and in particular to a segmented sampling detection structure for atmospheric particle concentration. Background Art

[0002] As a more rigorous environmental issue, the quality of the atmospheric environment is a real-time issue that people are always concerned about. In order to detect and process the concentration of atmospheric particulate matter, it is necessary to adapt the corresponding sampling device for regular detection and processing;

[0003] For example, the patent with publication number CN105987868A discloses a low-concentration flue gas particle detection system. In order to solve the problem of low-concentration multi-point detection, the following technical solutions are proposed: the focusing lens and the sensor probe are located in the measuring pool, their normal lines coincide, and their normal lines and the laser light form an angle of 45°; the sampling mechanism includes: an air collection pipe, and more than three sampling sub-mechanisms; each sampling sub-mechanism includes a sampling tube; the rear end of each sampling tube is connected to the air path of the air collection pipe; the front ends of all sampling tubes are arranged in the flue of flue gas emission, and the front end of each sampling tube is located at a different position, and the beneficial effects are: high detection accuracy;

[0004] Another example is the patent with publication number CN107389388A which discloses a rapid sampling device for detecting haze concentration in the air. The technical problem to be solved is to provide a rapid sampling device for detecting haze concentration in the air with fast sampling speed, pure sampling and simple operation. In order to solve the above technical problems, the device includes a sampling box, a slide rail, a slider, a first elastic member, a cylinder, a placement plate, a rack, a sector gear, a rotating rod, a splint, an airbag, a second elastic member, a buckle, etc.; the slide rail is slidably connected with a slider, the slider cooperates with the slide rail, and the left side of the slider is connected to the slide rail by a hook connection. The gas in the airbag can be efficiently discharged, which is convenient for absorbing the gas to be sampled, so as to achieve the effect of rapid sampling;

[0005] For example, the patent with publication number CN103712898A discloses an atmospheric suspended particulate mass concentration measuring instrument, which is suitable for detecting the mass concentration of particulate matter below PM10 in the air environment including PM2.5. It is difficult for existing organic filter membranes such as quartz and mixed cellulose to intercept 99% of PM2.5 fine particles on the filter membrane. The existing electronic oscillating balance method is affected by the thick dust accumulation and the vibration frequency. The filter membrane weighing method is cumbersome to operate and difficult to calibrate the accuracy. In the face of the aerosol properties of fine particles below PM10 in ambient air, especially PM2.5, its electronic load is just enough to give full play to the principle of ionization absorption energy. Because the atomic nuclei and electrons of dust substances are fixed, this method is calibrated with the manual filter membrane weighing method to achieve high precision requirements.

[0006] Most of the above-mentioned existing technologies have improved their overall structure. However, when the existing atmospheric particulate matter concentration sampling and detection structure needs to collect samples at different environmental heights in different areas during operation, it is generally necessary for the user to perform multiple sampling operations in steps, and the sampling process cannot be performed synchronously, resulting in the inability to guarantee the sampling accuracy at different heights in the same time period, and thus there are certain usage limitations. Summary of the invention

[0007] The purpose of the present invention is to provide a segmented sampling and detection structure for atmospheric particulate matter concentration to solve the problem raised in the above background technology that during the work process, when it is necessary to collect samples at different environmental heights in different areas, the user is generally required to perform multiple sampling operations in steps, and the sampling processing cannot be performed synchronously, resulting in the sampling accuracy in the same time period cannot be guaranteed.

[0008] To achieve the above object, the present invention provides the following technical solution: a segmented sampling detection structure for atmospheric particulate matter concentration, comprising a detection substrate and a first detection sampling segment, wherein the first detection sampling segment is installed at the upper end of the detection substrate, and a retractable structure is formed between the first detection sampling segment and the detection substrate through a built-in electric push rod;

[0009] The upper end of the first detection sampling section is butt-jointed with the second detection sampling section, and the lower nesting end of the second detection sampling section is provided with a preset locking groove, and the outer side of the lower nesting end of the second detection sampling section is fixedly connected with an external movable resistance member, and the inner side of the upper end of the first detection sampling section is bonded with a built-in first airbag, and an auxiliary self-locking structure under pressure is provided between the first detection sampling section and the second detection sampling section, and the second detection sampling section will rotate with fine adjustment of the force angle accordingly, and then perform self-locking processing under the pressure state of the device through the auxiliary self-locking structure, that is, the self-locking of the device under pressure will not appear loose or fall off;

[0010] External baffles are installed on the outside of the first detection sampling section and the second detection sampling section, and a self-decompression structure in a pressurized state is arranged on the inside of the external baffles.

[0011] Furthermore, the auxiliary self-locking structure is provided with a fitting wedge, and the fitting wedge is docked on the outside of the built-in first airbag, and the fitting wedge is nested and docked with the inner side of the upper end of the first detection sampling section, and the outer side of the fitting wedge is fixedly connected to the first return spring, and the first return spring is arranged on the inner side of the first detection sampling section.

[0012] Furthermore, an air guide hose is penetrated and docked at the upper end of the built-in first airbag, and the air guide hose is penetrated along the inner side of the upper end of the first detection sampling section, and a built-in second airbag is bonded and connected to the inner side of the upper end of the first detection sampling section, and the built-in second airbag and the end of the air guide hose are connected to each other; a locking nest is docked at the outer side of the built-in second airbag, and the locking nest corresponds to the inner position of the preset locking groove, and a vertical movable plate is fixedly connected to the upper end of the locking nest.

[0013] Furthermore, the second detection sampling section is nested and docked along the upper end of the first detection sampling section, and the external movable resistance piece at the lower end of the second detection sampling section is alternately arranged with the fitting wedge piece. When the second detection sampling section is pressed and rotated, the external movable resistance piece at its lower end synchronously applies pressure to the contacting fitting wedge piece.

[0014] Furthermore, when the fitting wedge moves inward, pressure is simultaneously applied to the contacting built-in first airbag, and the built-in first airbag forms an air supply structure to the inner side of the built-in second airbag through the air guide hose, and the expanded built-in second airbag pushes the outer locking nest to move until it is locked with the inner side of the preset locking groove at the lower end of the second detection sampling section.

[0015] Furthermore, the self-depressurizing structure is provided with an external docking airbag, and the external docking airbag is adhesively docked to the lower end of the second detection sampling section, and the inner side of the external docking airbag is fixedly connected with a built-in partition plate, and the inner side of the external docking airbag is penetrated by an air supply reserved hose, and the air supply reserved hose is penetrated along the inner side of the second detection sampling section.

[0016] Furthermore, the inner end of the external baffle is adhesively connected to an external resistance airbag, and the external resistance airbag is connected to the end of the air supply reserved hose, the inner side of the external baffle is rotatably connected to a movable guide, and the inner side of the movable guide is fixedly connected to a second return spring, and the second return spring is docked with the outer side of the second detection sampling section; the outer side of the movable guide is rotatably connected to a guide pressure relief docking piece, and the axial end of the guide pressure relief docking piece is connected to a torsion spring, and the active state of the guide pressure relief docking piece is reset by the torsion spring, and a reserved steel wire rope is wound around the outer side of the axial end of the guide pressure relief docking piece, and the reserved steel wire rope is docked with the external baffle.

[0017] Furthermore, the vertical movable plate synchronously applies pressure to the external docking airbag in contact with it during the inward movement of the locking nested part, and the external docking airbag forms an air supply structure toward the inner side of the external resistance airbag through the air supply reserved hose, and the inflated external resistance airbag pushes the movable guide part and guides the pressure relief docking part to rotate outward.

[0018] Furthermore, during the movement of the movable guide member, the reserved steel wire rope with the end relatively fixed is used to drive and guide the pressure relief docking member to rotate inward along the outer side of the movable guide member to perform pressure relief processing.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The atmospheric particulate matter concentration segmented sampling detection structure is provided with an auxiliary self-locking structure. A plurality of second detection sampling segments are stacked along the upper end of the first detection sampling segment. The assembly of the second detection sampling segment does not require any positioning operation structure. The self-positioning working state can be achieved by simply plugging the second detection sampling segment into the upper end of the first detection sampling segment. When the overall device is exposed to wind force and other influences at high altitude, the second detection sampling segment will rotate with fine adjustment of the force angle, and then the auxiliary self-locking structure will perform self-locking processing when the device is under pressure, that is, the self-locking of the device under pressure will not loosen or fall off, so that the device can be quickly assembled for segmented sampling and can be quickly disassembled and separated later, thereby improving the practicality of the device.

[0021] Furthermore, when the second detection sampling section is exposed to external wind force or other pressure, it will cooperate with the outer guiding pressure relief docking piece to rotate under force to relieve pressure, so that the external movable resistance piece at its lower end will pressurize the contacting fitting wedge-shaped piece according to the rotation direction, so that it moves inward to synchronously squeeze the contacting built-in first airbag, and the built-in first airbag supplies air to the inside of the built-in second airbag through the air guide hose, thereby pushing the outer locking nesting piece to move inward, so that it moves to lock with the inner side of the preset locking groove at the lower end of the second detection sampling section, so that it can automatically lock under pressure and prevent it from falling off, so that users can meet the sample collection needs of different environmental heights in different areas, and the sampling accuracy of different heights in the same time period is guaranteed;

[0022] Furthermore, a self-pressure relief structure is provided. When the locking nested part is forced to move inward, the vertical movable plate connected to its upper end will be pressed and moved inward accordingly, thereby applying pressure to the contacting external docking airbag simultaneously, so that the external docking airbag under pressure at the corresponding angle can supply air to the external resistance airbag through the air supply reserved hose, so that the inflated external resistance airbag pushes the movable guide part and the guide pressure relief docking part to rotate outward to guide the airflow, thereby preventing the contacting airflow from directly contacting the outside of the device and causing excessive impact on the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the detection matrix of the present invention;

[0025] Figure 3This is a schematic diagram of the three-dimensional structure of the external baffle of the present invention;

[0026] Figure 4 This is a schematic diagram of a half-cut three-dimensional structure of the first detection sampling section of the present invention;

[0027] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the external baffle of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the second return spring of the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the external conflict airbag of the present invention;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the laminating wedge-shaped member of the present invention;

[0032] Fig.10 This is a schematic diagram of a half-cut three-dimensional structure of a locking nesting member of the present invention;

[0033] Fig.11 A schematic diagram of the three-dimensional structure of the steel wire rope is reserved for the present invention;

[0034] Fig.12 It is a schematic diagram of the three-dimensional structure of the detection matrix of the present invention.

[0035] In the figure: 1. detection substrate; 2. first detection sampling section; 3. second detection sampling section; 4. preset locking groove; 5. external movable resistance member; 6. built-in first airbag; 7. first return spring; 8. fitting wedge; 9. air guide hose; 10. built-in second airbag; 11. locking nesting member; 12. vertical movable plate; 13. external docking airbag; 14. built-in partition plate; 15. air supply reserved hose; 16. external baffle; 17. movable guide member; 18. second return spring; 19. external resistance airbag; 20. guide pressure relief docking member; 21. reserved steel wire rope; 22. torsion spring. DETAILED DESCRIPTION

[0036] 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.

[0037] Example 1: Please refer to Figure 1-Figure 12, the present invention provides the following technical solutions: a segmented sampling detection structure for atmospheric particulate matter concentration, which includes a first detection sampling section 2 installed on the upper end of a detection substrate 1, and a retractable structure is formed between the first detection sampling section 2 and the detection substrate 1 through a built-in electric push rod;

[0038] The upper end of the first detection sampling section 2 is butt-jointed with the second detection sampling section 3, and the lower nesting end of the second detection sampling section 3 is provided with a preset locking groove 4, and the outer side of the lower nesting end of the second detection sampling section 3 is fixedly connected with an external movable resistance member 5, the inner side of the upper end of the first detection sampling section 2 is bonded with a built-in first airbag 6, and an auxiliary self-locking structure under pressure is provided between the first detection sampling section 2 and the second detection sampling section 3;

[0039] The auxiliary self-locking structure is provided with a fitting wedge 8, and the fitting wedge 8 is docked on the outer side of the built-in first airbag 6, and the fitting wedge 8 is nested and docked with the inner side of the upper end of the first detection sampling section 2, and the outer side of the fitting wedge 8 is fixedly connected with a first return spring 7, and the first return spring 7 is arranged on the inner side of the first detection sampling section 2. The upper end of the built-in first airbag 6 is penetrated and docked with an air guide hose 9, and the air guide hose 9 penetrates along the inner side of the upper end of the first detection sampling section 2, and the inner side of the upper end of the first detection sampling section 2 is adhesively connected with a built-in second airbag 10, and the built-in second airbag 10 is connected to the end of the air guide hose 9, and the outer side of the built-in second airbag 10 is docked with a locking nest 11, and the locking nest 11 corresponds to the inner position of the preset locking groove 4, and the upper end of the locking nest 11 is fixedly connected with a vertical movable plate 12.

[0040] The second detection sampling section 3 is nested and docked along the upper end of the first detection sampling section 2, and the external movable abutment 5 and the fitting wedge 8 at the lower end of the second detection sampling section 3 are arranged alternately. When the second detection sampling section 3 is pressed and rotated, the external movable abutment 5 at its lower end synchronously applies pressure to the contacting fitting wedge 8. When the fitting wedge 8 moves inward, it synchronously applies pressure to the contacting built-in first airbag 6, and the built-in first airbag 6 forms an air supply structure to the inner side of the built-in second airbag 10 through the air guide hose 9, and the inflated built-in second airbag 10 pushes the outer locking nest 11 to move to lock with the inner side of the preset locking groove 4 at the lower end of the second detection sampling section 3;

[0041] The user can stack multiple second detection sampling sections 3 along the upper end of the first detection sampling section 2 according to the needs of sampling and testing, and the assembly of the second detection sampling section 3 does not require any positioning operation structure. The self-positioning working state can be achieved by simply plugging the second detection sampling section 3 into the upper end of the first detection sampling section 2, and the ambient gas contacted by the equipment can be sucked through the preset vacuum negative pressure structure. When the entire equipment is exposed to wind and other influences at high altitudes, the second detection sampling section 3 will rotate with fine-tuning of the force angle, and then self-lock through the auxiliary self-locking structure when the equipment is under pressure, that is, the self-locking of the equipment under pressure will not loosen or fall off, so that the equipment can be quickly assembled for segmented sampling and can be quickly disassembled later. When the second detection sampling section 3 is in contact with external wind force or other pressure during the working process, it will cooperate with the outer guiding pressure relief docking piece 20 to rotate and relieve pressure, so that the external movable contact piece 5 at its lower end will apply pressure to the contacting fitting wedge-shaped piece 8 according to the rotation direction, so that it moves inward to synchronously squeeze the contacting built-in first airbag 6, and the built-in first airbag 6 supplies air to the inside of the built-in second airbag 10 through the air guide hose 9, thereby pushing the outer locking nesting piece 11 to move inward, so that it moves to lock with the inner side of the preset locking groove 4 at the lower end of the second detection sampling section 3, so that it is automatically locked under pressure and prevented from falling off, so that users can meet the sample collection needs of different environmental heights in different areas, and the sampling accuracy of different heights in the same time period is guaranteed.

[0042] Embodiment 2: Based on Embodiment 1, a self-decompression structure is also disclosed, and its specific structure is as follows:

[0043] External baffles 16 are installed on the outside of the first detection sampling section 2 and the second detection sampling section 3, and a self-decompression structure in a pressurized state is arranged on the inside of the external baffles 16.

[0044] The self-depressurization structure is provided with an external docking airbag 13, and the external docking airbag 13 is bonded and docked at the lower end of the second detection sampling section 3, and the inner side of the external docking airbag 13 is fixedly connected with a built-in partition plate 14, and the inner side of the external docking airbag 13 is penetrated with an air supply reserve hose 15, and the air supply reserve hose 15 penetrates along the inner side of the second detection sampling section 3. The inner end of the external baffle 16 is bonded and connected with an external abutting airbag 19, and the external abutting airbag 19 and the end of the air supply reserve hose 15 are connected to each other, the inner side of the external baffle 16 is rotatably connected with a movable guide 17, and the inner side of the movable guide 17 is fixedly connected with a second reset spring 18, and the second reset spring 18 is docked with the outer side of the second detection sampling section 3;

[0045] The outer side of the movable guide 17 is rotatably connected to the guide pressure relief docking piece 20, and the shaft end of the guide pressure relief docking piece 20 is connected to a torsion spring 22, and the movable state of the guide pressure relief docking piece 20 is reset by the torsion spring 22. A reserved steel wire rope 21 is wound around the outer side of the shaft end of the guide pressure relief docking piece 20, and the reserved steel wire rope 21 is docked with the external baffle 16. The vertical movable plate 12 synchronously presses the contacted external docking airbag 13 during the inward movement of the locking nesting piece 11, and the external docking airbag 13 forms an air supply structure to the inner side of the external resistance airbag 19 through the air supply reserved hose 15, and the inflated external resistance airbag 19 pushes the movable guide 17 and the guide pressure relief docking piece 20 to rotate outward. During the movement of the movable guide 17, the reserved steel wire rope 21 with the relatively fixed end drives the pressure relief docking piece 20 to rotate inward along the outer side of the movable guide 17 to relieve pressure; during the process of the locking nesting piece 11 being forced to move inward, the vertical movable plate 12 docked with its upper end will be pressed and moved inward accordingly, thereby applying pressure to the contacting external docking airbag 13 synchronously, so that the external docking airbag 13 under pressure at the corresponding angle supplies air to the external resistance airbag 19 through the reserved air supply hose 15, so that the external resistance airbag 19 is expanded. The airbag 19 pushes the movable guide member 17 and the guiding pressure relief docking member 20 to rotate outward to guide the airflow, thereby preventing the airflow from directly contacting the outside of the equipment and causing excessive impact on the equipment; in the process of the movable guide member 17 rotating along the inner side of the external baffle 16, the reserved steel wire rope 21 fixed in a relative position to the end of its axial end will be driven by the force to further rotate the docking guiding pressure relief docking member 20 along the outer side of the movable guide member 17 inward, thereby quickly dispersing and relieving the guided airflow.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A segmented sampling detection structure for atmospheric particulate matter concentration, comprising a detection substrate (1) and a first detection sampling segment (2), wherein the first detection sampling segment (2) is mounted on the upper end of the detection substrate (1), and a retractable structure is formed between the first detection sampling segment (2) and the detection substrate (1) via a built-in electric push rod; Features: The upper end of the first detection sampling section (2) is butt-jointed with the second detection sampling section (3), and a preset locking groove (4) is provided at the lower nesting end of the second detection sampling section (3), and an external movable resistance member (5) is fixedly connected to the outer side of the lower nesting end of the second detection sampling section (3), a built-in first airbag (6) is bonded to the inner side of the upper end of the first detection sampling section (2), and an auxiliary self-locking structure under pressure is provided between the first detection sampling section (2) and the second detection sampling section (3); The auxiliary self-locking structure is provided with a fitting wedge (8), and the fitting wedge (8) is butted against the outside of the built-in first airbag (6), and the fitting wedge (8) is nested and butted against the inner side of the upper end of the first detection sampling section (2), and the outer side of the fitting wedge (8) is fixedly connected with a first return spring (7), and the first return spring (7) is arranged on the inner side of the first detection sampling section (2); An air guide hose (9) is connected to and penetrated through the upper end of the built-in first airbag (6), and the air guide hose (9) passes through the inner side of the upper end of the first detection sampling section (2); a built-in second airbag (10) is bonded to the inner side of the upper end of the first detection sampling section (2), and the ends of the built-in second airbag (10) and the air guide hose (9) are connected to each other; A locking nest (11) is butted against the outer side of the built-in second airbag (10), and the locking nest (11) corresponds to the inner side of the preset locking groove (4), and a vertical movable plate (12) is fixedly connected to the upper end of the locking nest (11); The second detection sampling section (3) is nested and docked along the upper end of the first detection sampling section (2); the external movable abutment member (5) at the lower end of the second detection sampling section (3) is arranged alternately with the fitting wedge member (8); when the second detection sampling section (3) is pressed and rotated, the external movable abutment member (5) at the lower end thereof synchronously applies pressure to the contacting fitting wedge member (8); When the fitting wedge-shaped member (8) moves inward, it simultaneously applies pressure to the built-in first airbag (6) in contact therewith, and the built-in first airbag (6) forms an air supply structure toward the inside of the built-in second airbag (10) through the air guide hose (9), and the inflated built-in second airbag (10) pushes the outer locking nesting member (11) to move until it is locked with the inner side of the preset locking groove (4) at the lower end of the second detection sampling section (3); External baffles (16) are installed on the outside of the first detection sampling section (2) and the second detection sampling section (3), and a self-decompression structure in a pressurized state is arranged on the inside of the external baffles (16); The self-depressurizing structure is provided with an external docking airbag (13), and the external docking airbag (13) is bonded and docked to the lower end of the second detection sampling section (3), and the inner side of the external docking airbag (13) is fixedly connected with a built-in partition plate (14), and the inner side of the external docking airbag (13) is penetrated by a gas supply reserve hose (15), and the gas supply reserve hose (15) penetrates along the inner side of the second detection sampling section (3); The inner end of the external baffle (16) is bonded to an external abutment airbag (19), and the external abutment airbag (19) is connected to the end of the air supply reserve hose (15), the inner side of the external baffle (16) is rotatably connected to a movable guide (17), the inner side of the movable guide (17) is fixedly connected to a second return spring (18), and the second return spring (18) is butted against the outer side of the second detection sampling section (3); The outer side of the movable guide member (17) is rotatably connected to a guide pressure relief docking member (20), and the shaft end of the guide pressure relief docking member (20) is connected to a torsion spring (22), and the active state of the guide pressure relief docking member (20) is reset by the torsion spring (22), and a reserved steel wire rope (21) is wound around the outer side of the shaft end of the guide pressure relief docking member (20), and the reserved steel wire rope (21) and the external baffle member (16) are connected to each other; The vertical movable plate (12) simultaneously applies pressure to the external docking airbag (13) in contact with the locking nesting member (11) as the locking nesting member (11) moves inward, and the external docking airbag (13) forms an air supply structure toward the inside of the external abutting airbag (19) through the air supply reserve hose (15), and the inflated external abutting airbag (19) pushes the movable guide member (17) and the guide pressure relief docking member (20) to rotate outward; During the movement of the movable guide member (17), the reserved steel wire rope (21) with the end relatively fixed is driven to guide the pressure relief docking member (20) to rotate inwardly along the outer side of the movable guide member (17) to perform pressure relief processing.

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