Portable snakelike life search and rescue instrument

Abstract

A portable snakelike life search and rescue instrument comprises a snakelike life search and rescue instrument body 1 and a backpack type gas-liquid supply device 2, a primary pressure reducing valve 14 is installed at an outlet of a gas cylinder 25 in the backpack type gas-liquid supply device 2, the gas cylinder 25 is divided into two paths, one path is connected with the input end of a secondary pressure reducing valve 29, and the other path is connected with a high-pressure pressure gauge 32 and an alarm 33. The output end of the secondary pressure reducing valve 29 is connected with the input end of a three-way valve 30, one end of the output end of the three-way valve 30 is connected with a gas input port 35 of a three-way change-over switch 31 through a gas-liquid guide pipe 34a, the other end of the output end of the three-way valve 30 is connected with a liquid storage tank 26 through a gas-liquid guide pipe 34b, and the output end of the liquid storage tank 26 is connected with a liquid input port 36 of the three-way change-over switch 31. And a gas-liquid output port 37 of the three-way change-over switch 31 is connected with a gas-liquid output pipe orifice 4 through a gas-liquid guide pipe 34c. The multifunctional integration of environment reconnaissance, life search, vital sign monitoring and life maintenance is realized, and the rescue efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the field of life search and rescue in ruins, and specifically relates to a new type of portable snake-shaped life search and rescue instrument for individual soldiers. Background Art

[0002] China has a wide variety of natural disasters, high occurrence frequencies, and serious losses. All kinds of natural disasters are extremely likely to cause building collapses, forming large areas of ruins and resulting in people being buried and trapped. Therefore, it has become the top priority to search and rescue disaster survivors in the ruins as much as possible. The ruins formed by building collapses have a complex structure, are buried layer by layer, and are winding inside. General life detectors, such as audio and video life detection rods, can mostly only detect the surface of the ruins, are difficult to search deep inside the ruins for survivors, and are even less able to provide necessary life support for the trapped survivors.

[0003] To solve the above problems, the prior art provides a new type of snake-eye life detector (Application No.: CN202110509491.2), which includes structures such as a box body, an oxygen pump, a liquid storage tank, an air delivery pipe, an infusion pipe, a first rigid pipe, a telescopic hose, a gooseneck pipe, a second rigid pipe, and a probe. Rescue personnel drive the second rigid pipe to move inside the ruins by using an adjustment assembly to achieve the second rigid pipe to penetrate deep into the ruins and can provide life support such as gas and liquid. However, the oxygen pump and liquid storage tank of the above life detector are integrated in the box body, resulting in a large volume and heavy weight of the device, difficult control of air delivery and infusion, and the movement of the second rigid pipe requires the cooperation of multiple pull rings, making the operation inconvenient. Therefore, the above device is not conducive to individual operation and carrying, has a complex structure, is inconvenient to use, and has low rescue efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a portable snake-shaped life search and rescue instrument to achieve the multi-functional integration of environmental reconnaissance, life search, life sign monitoring, and life maintenance, and improve the rescue efficiency.

[0005] A portable snake-shaped life search and rescue instrument provided in this embodiment includes: a snake-shaped life search and rescue instrument body 1 and a backpack-type gas-liquid supply device 2 detachably connected to the snake-shaped life search and rescue instrument body 1. Among them, The snake-shaped life search and rescue instrument body 1 includes: a snake-shaped probe 5, a snake-shaped body 6, and a control handle 7. Among them, the snake-shaped probe 5 is arranged at one end of the snake-shaped body 6, the other end of the snake-shaped body 6 is connected to the control handle 7, a display screen 8 is arranged at the top of the control handle 7, and a gas-liquid input pipe orifice 3 is arranged at the side of the control handle 7. The gas-liquid input pipe orifice 3 is used to be connected to a matching gas-liquid output pipe orifice 4 on the backpack-type gas-liquid supply device 2; The backpack-type gas-liquid supply device 2 includes: a primary pressure reducing valve 14, a gas cylinder 25, a liquid storage tank 26, a backpack 27, a strap 28, a secondary pressure reducing valve 29, a three-way valve 30, a three-way switching switch 31, a high-pressure pressure gauge 32, an alarm 33, and gas-liquid conduits 34a, 34b, 34c, 34d. The liquid storage tank 26 is fixed to one side of the gas cylinder 25 by the strap 28, and the gas cylinder 25 is fixed to the backpack 27 by the strap 28. A primary pressure reducing valve 14 is installed at the outlet of the gas cylinder 25. After passing through the primary pressure reducing valve 14, it is divided into two paths. One path is connected to the input end of the secondary pressure reducing valve 29, and the other path is connected to the high-pressure pressure gauge 32 and the alarm 33. The output end of the secondary pressure reducing valve 29 is connected to the input end of the three-way valve 30. One end of the output end of the three-way valve 30 is connected to the gas input port 35 of the three-way switching switch 31 through the gas-liquid conduit 34a, and the other end of the output end of the three-way valve 30 is connected to the liquid storage tank 26 through the gas-liquid conduit 34b. The other end of the output end of the liquid storage tank 26 is connected to the liquid input port 36 of the three-way switching switch 31 through the gas-liquid conduit 34c. The gas-liquid output port 37 of the three-way switching switch 31 is connected to the gas-liquid output pipe orifice 4 through the gas-liquid conduit 34d.

[0006] Preferably, the gas cylinder 25 is an air breathing cylinder.

[0007] Preferably, the snake-shaped probe 5 includes: an illumination module 9, a visible light camera 10, an infrared thermal imaging camera 11, a speaker 12, a pickup 13, and a gas-liquid supply orifice 15.

[0008] Preferably, the diameter of the snake-shaped probe 5 is less than 3 cm.

[0009] Preferably, the snake body 6 includes: a snake bone 16, an angle control wire 17, a bundled cable 18, and a gas-liquid supply pipe 19. Among them, the snake bone 16 is arranged at one end of the snake body 6 close to the snake-shaped probe 5 and is connected to the snake-shaped probe 5; the angle control wire 17 is divided into a horizontal group and a vertical group. The angle control wire 17 is inserted into the snake bone 16, one end is connected to the snake-shaped probe 5, and one end is connected to the control handle 7, so that the snake body 6 bends along the horizontal and vertical directions under the drive of the control handle 7; one end of the bundled cable 18 is connected to each detection component of the snake-shaped probe 5, and the other end is connected to the display screen 8 on the top of the control handle 7; one end of the gas-liquid supply pipe 19 is connected to the gas-liquid supply orifice 15 of the snake-shaped probe 5, and the other end is connected to the gas-liquid input orifice 3 on the side of the control handle 7.

[0010] Preferably, the control handle 7 includes: a knob 20 and operation buttons 21. Among them, the knob 20 is divided into two groups, an inner group and an outer group, which are arranged on the side of the control handle 7. The inner knob is connected to the horizontal angle control steel wire, and the outer knob is connected to the vertical angle control steel wire. When the knob 20 rotates, it will pull the angle control steel wire 17 inside the snake body 6, resulting in a length difference between the inner and outer steel wires in the horizontal or vertical direction, realizing the bending of the snake body 6. The operation buttons 21 are arranged on the side of the control handle 7, and the operation buttons 21 are connected to the bundled cable 18, which is used to adjust the multi-level brightness of the lighting module 9 and turn on and off the power supply of the snake-shaped life search and rescue instrument body 1.

[0011] Preferably, the display screen 8 includes: a Bluetooth module 22, a wireless video transmission module 23, an antenna 24, a voice intercom module 42 and a battery module 43. The Bluetooth module 22, the wireless video transmission module 23, the voice intercom module 42 and the battery module 43 are arranged inside the display screen 8, and the antenna 24 is arranged outside the display screen 8.

[0012] Preferably, the three-way switching switch 31 includes: a gas input port 35, a liquid input port 36, a gas-liquid output port 37, a housing 38, a telescopic pull rod 39, a top bead 40 and a limit groove 41. The three-way switching switch 31 is used to output gas or liquid to the gas-liquid output pipe orifice 37. The internal structure of the three-way switching switch 31 is a three-section structure and a top bead limit structure. One section is the gas release gear, another section is the liquid release gear, and the middle section is the stop release gear. When the telescopic pull rod 39 is fully pushed into the pull rod and fully pulled out, they are the gas and liquid switches respectively. Pulling it exactly to the halfway position means entering the closed gear. The top bead 40 is arranged inside the three-way switching switch 31, and the limit groove 41 is arranged on the telescopic pull rod 39. Once the telescopic pull rod 39 is pulled until the top bead 40 enters the limit groove 41, the operator can immediately perceive that the closed gear is reached.

[0013] In summary, a new type of single-soldier portable snake-shaped life search and rescue instrument provided by the present invention is single-soldier portable, easy to operate, can conduct all-round space reconnaissance deep into the ruins, has a variety of life search methods, realizes the multi-function integration of environmental reconnaissance, life search, life sign monitoring and life maintenance, and improves the rescue efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a portable snake-shaped life search and rescue instrument according to an embodiment of the present invention.

[0015] Figure 2 It is a schematic diagram of the snake-shaped life search and rescue instrument body according to an embodiment of the present invention.

[0016] Figure 3 It is a schematic structural diagram of the snake-shaped probe according to an embodiment of the present invention.

[0017] Figure 4 Schematic diagram of the structure of the snake-shaped body according to an embodiment of the present invention.

[0018] Figure 5 Schematic diagram of the structure of the control handle according to an embodiment of the present invention.

[0019] Figure 6 Schematic diagram of the structure of the backpack-type gas-liquid supply device according to an embodiment of the present invention.

[0020] Figure 7 Schematic diagram of the structure of the three-way switching switch according to an embodiment of the present invention.

[0021] Figure 8 Schematic diagram of the structure of the display screen according to an embodiment of the present invention.

[0022] Figure 9 Schematic diagram of the operation of the three-way switching switch according to an embodiment of the present invention.

[0023] In the figure: 1. Snake-shaped life search and rescue instrument body; 2. Backpack-type gas-liquid supply device; 3. Gas-liquid input pipe orifice; 4. Gas-liquid output pipe orifice; 5. Snake-shaped probe; 6. Snake-shaped body; 7. Control handle; 8. Display screen; 9. Lighting module; 10. Visible light camera; 11. Infrared thermal imaging camera; 12. Speaker; 13. Pickup; 14. First-stage pressure reducing valve; 15. Gas-liquid supply pipe orifice; 16. Snake bone; 17. Angle control steel wire; 18. Bundle cable; 19. Gas-liquid supply pipeline; 20. Knob; 21. Operation button; 22. Bluetooth module; 23. Wireless image transmission module; 24. Antenna; 25. Gas cylinder; 26. Liquid storage tank; 27. Backrest; 28. Straps; 29. Second-stage pressure reducing valve; 30. Three-way valve; 31. Three-way switching switch; 32. High-pressure pressure gauge; 33. Alarm; 34a, 34b, 34c, 34d are gas-liquid conduits; 35. Gas input port; 36. Liquid input port; 37. Gas-liquid output port; 38. Outer shell; 39. Telescopic pull rod; 40. Top bead; 41. Limit groove; 42. Voice intercom module; 43. Battery module. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily. To better understand the present invention, the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 Schematic diagram of a new type of portable snake-shaped life search and rescue instrument according to an embodiment of the present invention, as Figure 1As shown in the figure, the new portable snake-shaped life search and rescue instrument of this embodiment includes: a snake-shaped life search and rescue instrument body 1 and a backpack-type gas-liquid supply device 2 detachably connected to the portable snake-shaped life search and rescue instrument body 1. The portable snake-shaped life search and rescue instrument body 1 of this embodiment is provided with a gas-liquid input pipe orifice 3 for connection. The backpack-type gas-liquid supply device 2 is provided with a gas-liquid output pipe orifice 4 for connection and matching with the gas-liquid input pipe orifice 3. Through the connection of the gas-liquid input pipe orifice 3 and the matching gas-liquid output pipe orifice 4, the connection between the portable snake-shaped life search and rescue instrument body 1 and the backpack-type gas-liquid supply device 2 is realized. With such a setting, it is convenient to separately replace the backpack-type gas-liquid supply device 2 that has consumed all the gas or liquid during use, without affecting the normal operation of the portable snake-shaped life search and rescue instrument body 1, and it is convenient for the wearing of the backpack-type gas-liquid supply device 2 and the overall use of the equipment, and it is also easy to organize, store and transport.

[0026] Figure 2 It is a schematic diagram of the snake-shaped life search and rescue instrument body according to the embodiment of the present invention. As Figure 2 shown, the portable snake-shaped life search and rescue instrument body 1 of this embodiment includes: a snake-shaped probe 5, a snake-shaped body 6, a control handle 7, a display screen 8 and a gas-liquid input pipe orifice 3. The snake-shaped probe 5 is arranged at one end of the snake-shaped body 6. The other end of the snake-shaped body 6 is connected to the control handle 7. The display screen 8 is arranged on the top of the control handle 7. The gas-liquid input pipe orifice 3 is arranged on the side of the control handle 7.

[0027] In a preferred embodiment, the diameter of the snake-shaped probe 5 is less than 3 cm, which is the smallest among the ruins detection rods with equivalent functions.

[0028] Figure 3 It is a structural schematic diagram of the snake-shaped probe according to the embodiment of the present invention. As Figure 3 shown, the snake-shaped probe 5 is integrated with an illumination module 9, a visible light camera 10, an infrared thermal imaging camera 11, a speaker 12, a microphone 13 and a gas-liquid supply pipe orifice 15. Among them, the illumination module 9 has a multi-level brightness adjustment function. With such a setting, the snake-shaped probe realizes the integration of environmental reconnaissance, life search, life sign monitoring and life maintenance.

[0029] The snake-shaped probe 5 has the performance of waterproof, dustproof and anti-oil pollution. Waterproof and dustproof components such as speakers and microphones are selected, and the environmental adaptability is good. The snake-shaped probe 5 is integrated with an infrared thermal imaging camera 11, and trapped persons can be identified by judging abnormal temperature points. The illumination module 9 uses an LED light source and can be designed with multi-level brightness adjustment. High brightness is used during environmental reconnaissance and life search to improve the field of view brightness and facilitate search. During the monitoring of the life signs and life maintenance of trapped persons, low brightness is used to prevent damage to the eyes of trapped persons caused by excessive brightness.

[0030] In practical applications, after entering the ruins, there are often multiple passages or multiple areas inside the ruins, and it is necessary to determine which passage or area to search first. The search process can be roughly divided into two steps, and the two steps are used alternately. First, the non-visual personnel detection module is used to search the approximate direction and narrow the scope. Secondly, the visual personnel detection module is used to conduct a careful search to determine the trapped persons. If the trapped persons cannot be found, the above two steps are repeated to narrow the search scope until the trapped persons are successfully located.

[0031] A non-visual person detection module refers to a detection module that cannot directly observe the trapped person, such as a microphone 13 that detects abnormal sounds (such as shouts and knocks from trapped persons). A visual person detection module refers to a detection module that can directly observe the trapped person, such as a visible light camera 10 that searches for trapped persons, and an infrared thermal imaging camera 11 that searches for abnormal temperature points in the area.

[0032] After finding the trapped person, the rescuer operates the search and rescue instrument and brings the snake probe 5 close to the trapped person to monitor the vital signs. For example, the visible light camera 10 directly observes the physical condition or mental state of the trapped person; the infrared thermal imaging camera 11 directly observes the body temperature of the human body. If the body temperature is abnormal, it indicates that the trapped person may have a fever or hypothermia, and then determines the state of the vital signs; the speaker 12 and the microphone 13 are combined with the audio module 42 to communicate directly with the trapped person through voice intercom to understand the physical condition of the trapped person. The rescuer can determine the rescue plan according to the state of the trapped person's vital signs and implement rescue tactics in a targeted manner.

[0033] Figure 4 FIG. 1 is a schematic diagram of the structure of a serpentine body according to an embodiment of the present invention. Figure 4 As shown, the serpentine body 6 of this embodiment includes: a serpentine bone 16, an angle control wire 17, a bundled cable 18, and a gas-liquid supply pipeline 19. Among them, the serpentine bone 16 is arranged at one end of the serpentine body 6 close to the serpentine probe 5 and connected to the serpentine probe 5; the angle control wire 17 is divided into two groups, horizontal and vertical, and the angle control wire 17 is inserted in the serpentine bone 16, one end is connected to the serpentine probe 5, and the other end is connected to the control handle 7, so that the serpentine body 6 is bent in the horizontal and vertical directions under the drive of the control handle 7; one end of the bundled cable 18 is connected to each detection component of the serpentine probe 5, and the other end is connected to the display screen 8 on the top of the control handle 7; one end of the gas-liquid supply pipeline 19 is connected to the gas-liquid supply pipe port 15 of the serpentine probe 5, and the other end is connected to the gas-liquid input pipe port 3 on the side of the control handle 7. With such a configuration, the serpentine body 6 can be controlled to bend, adapt to the tortuous environment inside the ruins, and drive the serpentine probe 5 to look around spherically without leaving a detection blind spot.

[0034] The gas-liquid input pipe port 3 of this embodiment adopts a medical Luer connector, which is more hygienic when supplying medical-grade gas and liquid; it has good sealing performance and is not prone to gas or liquid leakage; and it has a quick-release design for easy connection.

[0035] The snake body 6 of this embodiment adopts multi-layer sealing, and successively includes a sheath, a stainless steel wire mesh layer and a waterproof coating on the outermost layer from the inside to the outside. Such a design can achieve the effects of waterproofing, wear resistance and anti-oil pollution.

[0036] The length of the snake body 6 of this embodiment can be 5m or 10m. Of course, it can also be other lengths and can be customized.

[0037] The outer skin of the snake body 6 of this embodiment is printed with meter scale numbers, and one meter scale number is printed every 0.5m. During the use process, the rescue personnel can estimate the insertion length by judging the meter scale numbers of the snake body 6 outside the ruins.

[0038] During the process of the snake body 6 advancing in the ruins, through the detection modules integrated in the snake probe 5, the internal environment can be viewed in real time, which is convenient for subsequent rescue personnel to understand the internal structural characteristics and implement rescue tactics more pertinently. During the environmental reconnaissance process, rotate the knob on the rotation control handle to make the snake probe 5 rotate omnidirectionally (in the up, down, left and right directions, up to 180° at most), so as to understand the internal space structure more comprehensively and leave no detection dead angle.

[0039] Figure 5 It is a schematic structural diagram of the control handle of the embodiment of the present invention, as Figure 5 shown, the control handle 7 includes: a knob 20 and an operation button 21. Among them, the knob 20 is divided into two groups inside and outside, and is arranged on the side of the control handle 7. The inner knob is connected to the horizontal angle control steel wire, and the outer knob is connected to the vertical angle control steel wire. When the knob 20 rotates, it will pull the angle control steel wire 17 inside the snake body 6, resulting in a length difference between the inner and outer steel wires in the horizontal or vertical direction, realizing the bending of the snake body 6. The operation button 21 is arranged on the side of the control handle 7, and the operation button 21 is connected to the bundled cable 18, and is used to adjust the multi-level brightness of the lighting module 9 and turn on and off the power supply of the snake-shaped life search and rescue instrument body.

[0040] The material of the control handle 7 of this embodiment is made of ABS (Acrylonitrile Butadiene Styrene), and is integrally injection molded. The control handle 7 of this embodiment has the advantages of high strength, anti-ultraviolet, anti-static, insulating and wear-resistant, and is suitable for use in harsh environments. Floats or patterns are provided on the control handle 7 of this embodiment to increase the friction force and prevent the hand from slipping and being unstable during use. The operation buttons on the control handle 7 of this embodiment adopt high-stroke buttons. The button stroke is high, it is not easy to be accidentally touched, and it is easy to operate blindly, and the feedback effect of pressing the button is good.

[0041] The display screen 8 includes: a Bluetooth module 22, a wireless video transmission module 23, an antenna 24, a voice intercom module 42, and a battery module 43. The Bluetooth module 22, the wireless video transmission module 23, the voice intercom module 42, and the battery module 43 are arranged inside the display screen 8. The antenna 24 is arranged outside the display screen 8. With such an arrangement, first, it is convenient for the operator to use a wireless Bluetooth headset for audio life detection and voice intercom, reducing the wired cable connection and facilitating single-soldier portable operation; second, the wireless video transmission module 23 transmits the image information in the display screen 8 back to the rear command post, facilitating collaborative search and not missing any targets.

[0042] The voice intercom module 42 provided in the display screen 8 of this embodiment adopts intelligent noise reduction and echo suppression design, and has a higher audio signal-to-noise ratio during audio life search or voice intercom, preventing the noisy sounds at the rescue scene from interfering with the rescue operation.

[0043] The battery module 43 provided in the display screen 8 of this embodiment adopts a detachable design. When the power is insufficient during use, it can be detachably replaced, avoiding charging by using a wired connection method such as an external power bank, reducing the wired cable connection, and facilitating single-soldier portable operation.

[0044] The display screen 8 of this embodiment adopts a high-brightness sunlight-visible design, avoiding the inability to clearly see the screen under sunlight and improving the rescue efficiency.

[0045] Figure 6 It is a structural schematic diagram of the backpack-type gas-liquid supply device according to an embodiment of the present invention. As Figure 6 shown, the backpack-type gas-liquid supply device 2 includes: a primary pressure reducing valve 14, a gas cylinder 25, a liquid storage tank 26, a backpack 27, a strap 28, a secondary pressure reducing valve 29, a three-way valve 30, a three-way switching switch 31, a high-pressure pressure gauge 32, an alarm 33, and gas-liquid conduits 34a, 34b, 34c, and 34d. Among them, the liquid storage tank 26 is fixed to one side of the gas cylinder 25 through the strap 28, the gas cylinder 25 is fixed to the backpack 27 through the strap 28, a primary pressure reducing valve 14 is installed at the outlet of the gas cylinder 25, and after passing through the primary pressure reducing valve 14, it is divided into two paths. One path is connected to the input end of the secondary pressure reducing valve 29, and the other path is connected to the high-pressure pressure gauge 32 and the alarm 33. The output end of the secondary pressure reducing valve 29 is connected to the input end of the three-way valve 30. One end of the output end of the three-way valve 30 is connected to the gas input port 35 of the three-way switching switch 31 through the gas-liquid conduit 34a, and the other end of the output end of the three-way valve 30 is connected to the liquid storage tank 26 through the gas-liquid conduit 34b. The other end of the output end of the liquid storage tank 26 is connected to the liquid input port 36 of the three-way switching switch 31 through the gas-liquid conduit 34c. The gas-liquid output port 37 of the three-way switching switch 31 is connected to the gas-liquid output pipe orifice 4 through the gas-liquid conduit 34d.

[0046] In this embodiment, the gas cylinder 25 uses a standard air breathing cylinder made of carbon fiber material, which has the following advantages: First, mobile gas supply vehicles are usually equipped at the rescue site. The interfaces of standard air breathing cylinders are unified. When the gas inside the cylinder is exhausted during use, it is convenient to directly inflate on-site. Second, it is convenient to directly replace with the existing cylinders equipped by the rescue team at the rescue site. Third, the cylinder body of the carbon fiber material gas cylinder is lighter in weight, reducing the burden of carrying. The liquid storage tank 26 in this embodiment uses stainless steel material, which is pressure-resistant and can prevent the liquid tank from bursting due to air pressure during use. The three-way switching valve 31 in this embodiment uses copper material and has sufficient pressure resistance.

[0047] When the gas inside the gas cylinder 25 is about to be exhausted during use, the air pressure inside the gas cylinder 25 also decreases accordingly. By observing the high-pressure pressure gauge 32, the operator can know the remaining gas state inside the gas cylinder 25. The alarm 33 will also make a sound to remind the operator that there is not much gas left in the gas cylinder 25 and the gas cylinder 25 needs to be replaced in time or ready for inflation.

[0048] The three-way valve 30 in this embodiment adopts a quick-insert design, which is convenient for the disassembly of the gas-liquid conduit. After disassembly, it is convenient to clean the residual liquid inside the gas-liquid conduit.

[0049] Figure 7 It is a structural schematic diagram of the three-way switching valve of the embodiment of the present invention. As Figure 7 shown, the three-way switching valve 31 includes: a gas input port 35, a liquid input port 36, a gas-liquid output port 37, a housing 38, a telescopic pull rod 39, a top bead 40 and a limit groove 41. The three-way switching valve 31 is provided with two input channels and a single output channel. Its input ends respectively input gas and liquid, and the output end is a common channel, which is responsible for outputting gas or liquid to the gas-liquid output pipe orifice 4. The internal structure of the three-way switching valve 31 is a three-section structure and a top bead limit structure. One section is the gas release gear, another section is the liquid release gear, and the middle section is the stop release gear. When the telescopic pull rod 39 is fully pushed into the pull rod and fully pulled out, it is the gas and liquid switch. Just pulling it to the halfway position means entering the closed gear. The top bead 40 is arranged inside the three-way switching valve 31, and the limit groove 41 is arranged on the telescopic pull rod 39. Once the telescopic pull rod 39 is pulled until the top bead 40 enters the groove, the operator can immediately sense that the closed gear is reached.

[0050] The gas-liquid output pipe orifice 4 in this embodiment uses a medical Luer connector, which has the following advantages: it is more hygienic when supplying gas and liquid at the medical grade; it has good sealing performance and is not easy to leak gas or liquid; it has a quick-disassembly design and is convenient for connection.

[0051] The three-section top bead limit structure adopted in this embodiment can be blindly operated with one hand, and there is feedback when the pull rod is pushed in the middle position.

[0052] The gas inlet 35, the liquid inlet 36, and the gas-liquid outlet 37 in this embodiment all adopt a frustum shape, which has a stronger friction force with the gas-liquid conduit 34 and a tighter connection, and is not easily detached under the impact of hydraulic pressure and air pressure.

[0053] As a preferred technical solution of the present invention, the gas cylinder 25 is a carbon fiber composite gas cylinder for an air respirator. With this setting, first, the weight of the gas cylinder 25 is lighter, reducing the burden on the operator's back; second, the gas cylinder for the air respirator is a standardized product and a standard equipment for rescue personnel, which is convenient for inflation and replacement at the rescue site.

[0054] As a preferred technical solution of the present invention, the gas-liquid input pipe orifice 3 is a male Luer connector, and the gas-liquid output pipe orifice 4 is a female Luer connector. The male and female connector structures adopted by the above gas-liquid input pipe orifice 3 and gas-liquid output pipe orifice 4 can be interchanged. With this setting, it is convenient for connection, has good sealing performance, and is not easily leaked of gas or liquid.

[0055] In practical applications, due to the complexity and harshness of the disaster site environment, the rescue process of the buried people in the ruins may last for dozens of hours. Therefore, it is very necessary to maintain the lives of the trapped people. The backpack-type gas-liquid supply device 2 in this embodiment stores gas and liquid, uses the snake-shaped life search instrument body 1 as a channel, and uses the snake-shaped probe 5 as an output end to provide gas and liquid support for the trapped people. The whole device is not just a simple release of gas (such as a balloon deflating) and a simple release of liquid (such as pouring water from a water bottle), but is designed in terms of structure and principle to meet the usage requirements. The reasons are as follows. First, the buried people in the ruins are relatively deep. The length of the snake-shaped body 6 (pipe) in this embodiment is 10 m, the inner diameter of the internal gas-liquid supply pipe 19 is 1 mm, and the volume of the liquid storage tank 26 is 2 L. Since the entire liquid delivery channel is long, the diameter is thin, the liquid capacity is small, and the delivery pipe will also form bends in the ruins, the liquid cannot flow out by its own gravity; second, limited by the internal structure characteristics of the ruins, the end of the device (the snake-shaped probe 5) can basically not reach near the mouth of the trapped people, and even there will be a relatively long distance. Therefore, it is required that the liquid still maintains a certain pressure after passing through a 10 m or even longer delivery pipe to form a jet (such as a toy water gun), rather than simply dripping at the end (the snake-shaped probe 5); third, the trapped people are buried or injured, and their body mobility is poor, and they often cannot cooperate to receive the delivered liquid. There will inevitably be a large amount of liquid waste during the jet, so the flow rate (hydraulic pressure) of the jet also needs to be maintained. Therefore, the device is redesigned from the principle level. Specifically, the gas cylinder 25 itself contains pressure, and the liquid is extruded by the gas, so that the liquid has pressure and the above functions are realized.

[0056] During the above design process, many detailed technical problems also need to be addressed at the design level, as follows: First, the selection of the liquid storage tank 26 is special. The pressure of the gas cylinder 25 is 30 Mpa. Even after decompression, it still has a relatively large air pressure. General material liquid storage tanks 26 cannot meet such a large pressure. After calculation and experiment, the liquid storage tank 26 must be made of stainless steel. Second, the pressure reducing valve needs to be customized and developed. The pressure reducing valves commonly used in the market for air breathing cylinders can reduce the pressure to 0.8 Mpa, but the hydraulic pressure formed by 0.8 Mpa is too large, the jet impact force is high, which is likely to cause secondary injuries to the trapped personnel. Moreover, a large air pressure requires high pressure resistance performance of the components, which also increases the equipment cost. Therefore, a secondary pressure reducing valve 29 needs to be customized to further reduce the air pressure; and this secondary pressure reducing valve 29 needs to be designed with controllable and adjustable pressure reducing ability. The reason for such a setting is that the on-site situation is complex during use, and dynamic synchronous decompression or dynamic asynchronous decompression can be carried out according to the actual situation. One situation is that when a long-distance jet or fast air supply is required, less decompression is needed, and vice versa, more decompression is needed. Another situation is that when a short-distance jet but fast air supply is required, the air pressure and hydraulic pressure need to be adjusted separately. Less decompression is needed during air supply, and more decompression is needed during liquid supply. The gas in the gas cylinder 25 passes through the primary pressure reducing valve 14, the secondary pressure reducing valve 29 and the three-way valve 30. The decompressed low-pressure gas is divided into two branch paths. One path is injected into the liquid storage tank 26 to pressurize it and discharge the liquid; the other path directly outputs the gas. Third, an alarm 33 and a high-pressure pressure gauge 32 are provided to indicate the remaining gas in the gas cylinder 25.

[0057] The advantage of the portable snake-shaped life search and rescue instrument in this embodiment is that it transports gas and liquid through a single channel. Such a setting reduces the number of transport channels, thereby reducing the equipment complexity, cost and volume (such as the diameter of the snake-shaped probe 5, the diameter of the snake body 6, the volume of the control handle 7, the volume of the backpack-type gas-liquid supply device 2, etc.), and is more suitable for use in the ruins scene. Another advantage is that it can be operated blindly by a single soldier (one person), and can be switched to gas transport, liquid transport or stop transport. To achieve the above functions, a three-way switching switch 31 is designed in this equipment. There is a telescopic pull rod 39 inside. When the telescopic pull rod 39 is pulled to the maximum, the liquid is released, and the liquid input port 36 and the gas-liquid output port 37 are connected. When the telescopic pull rod 39 is fully pushed in, the gas is released, and the gas input port 35 and the gas-liquid output port 37 are connected. When the telescopic pull rod 39 is in the middle position, it is shut down, and the gas input port 35, the liquid input port 36 and the gas-liquid output port 37 are not connected, realizing single gas-liquid channel control and one-handed operation. The design detail problem is how to master the shutdown when the telescopic pull rod 39 is in the middle position, which involves one-handed blind operation. Therefore, a top bead limit structure is set inside the three-way switching switch 31. When the telescopic pull rod 39 is pushed to the middle position, the top bead 40 enters the limit groove 41, and there will be a feeling of pause (similar to a push-type water-based pen), realizing one-handed operation in the middle position. The operation schematic diagram of the three-way switching switch is as Figure 9 shown.

[0058] Compared with the prior art, the beneficial effects of the present invention are as follows: The snake-shaped body 6 of this embodiment can be controlled to bend, which is more suitable for the internal environment of the ruins. Driven by the snake-shaped body 6, the snake-shaped probe 5 can conduct a spherical panoramic view without detection dead angles. Therefore, this search and rescue instrument can penetrate deep into the interior of the ruins for all-round reconnaissance, with high efficiency in environmental reconnaissance and life search.

[0059] The snake-shaped probe 5 of this embodiment integrates various detection modules such as an illumination module 9, a visible light camera 10, an infrared thermal imaging camera 11, a speaker 12, and a pickup 13, and has various environmental reconnaissance and life search methods, overcoming the limitations of a single method and improving the life search efficiency.

[0060] The illumination module 9 of the snake-shaped probe 5 of this embodiment has a multi-level brightness adjustment function. High brightness is used during environmental reconnaissance and life search to increase the field of view brightness for convenient search. When monitoring the vital signs and maintaining the life of the trapped person, low brightness is used to prevent damage to the eyes of the trapped person caused by excessive brightness.

[0061] The backpack-type gas-liquid supply device 2 of this embodiment has a gas low-pressure alarm device, which can give a timely reminder when the gas stored in the gas cylinder 25 is insufficient. Therefore, this search and rescue instrument has good human-computer interaction and is safe to use.

[0062] The portable snake-shaped life search and rescue instrument of this embodiment realizes the integration of environmental reconnaissance, life search, vital sign monitoring, and life maintenance, overcoming the limitation that traditional prior art ruins search and rescue instruments can only perform life detection. After an operator discovers a trapped person buried in the ruins using this search and rescue instrument, gas, liquid, and other life support can be provided immediately through the gas-liquid supply pipe orifice 15 of the snake-shaped probe 5, greatly improving the rescue efficiency, and having remarkable progress.

[0063] The backpack-type gas-liquid supply device 2 of this embodiment adopts a backpack-type integrated design. When in use, the operator carries the backpack-type gas-liquid supply device 2 on the body and operates the snake-shaped life search and rescue instrument body 1 with both hands for search and rescue operations. After discovering a trapped person, the telescopic rod 39 of the three-way switching switch 31 can be pulled with one hand to realize life maintenance operations. The whole process is single-soldier portable, single-soldier operated, simple to operate, reduces the personnel configuration, lightens the deployment of personnel at the rescue site, is conducive to the simultaneous development of work at multiple points at the rescue site, and has higher rescue efficiency and remarkable progress.

[0064] The above is only the preferred embodiment of the present invention. Of course, the present invention can also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A portable snake-shaped life-saving device, comprising: A snake-shaped life-saving device body (1) and a backpack-type gas-liquid supply device (2) detachably connected to the snake-shaped life-saving device body (1), wherein: The snake-shaped life-saving instrument body (1) comprises: a snake-shaped probe (5), a snake-shaped body (6), and a control handle (7), wherein the snake-shaped probe (5) is arranged at one end of the snake-shaped body (6), and the other end of the snake-shaped body (6) is connected to the control handle (7), a display screen (8) is arranged on the top of the control handle (7), and a gas-liquid input pipe port (3) is arranged on the side of the control handle (7), and the gas-liquid input pipe port (3) is used to be connected to a matching gas-liquid output pipe port (4) on a backpack gas-liquid supply device (2); The backpack gas-liquid supply device (2) comprises: a primary pressure reducing valve (14), a gas cylinder (25), a liquid storage tank (26), a backpack (27), a strap (28), a secondary pressure reducing valve (29), a three-way valve (30), a three-way switch (31), a high-pressure pressure gauge (32), an alarm (33) and gas-liquid conduits (34a, 34b, 34c, 34d), wherein the liquid storage tank (26) is fixed to one side of the gas cylinder (25) by means of a strap (28), and the gas cylinder (25) is fixed to the backpack (27) by means of a strap (28). A primary pressure reducing valve (14) is installed at the outlet of the gas cylinder (25), and the gas is divided into two paths after passing through the primary pressure reducing valve (14), one path being connected to the secondary pressure reducing valve ( The output end of the secondary pressure reducing valve (29) is connected to the input end of the three-way valve (30), one end of the output end of the three-way valve (30) is connected to the gas input port (35) of the three-way switching switch (31) through a gas-liquid conduit (34a), the other end of the output end of the three-way valve (30) is connected to the liquid storage tank (26) through a gas-liquid conduit (34b), the other end of the output end of the liquid storage tank (26) is connected to the liquid input port (36) of the three-way switching switch (31) through a gas-liquid conduit (34c), and the gas-liquid output port (37) of the three-way switching switch (31) is connected to the gas-liquid output pipe port (4) through a gas-liquid conduit (34d).

2. The portable snake-shaped life-saving device according to claim 1 is characterized in that: The serpentine body (6) comprises: a serpentine bone (16), an angle control wire (17), a bundled cable (18) and a gas-liquid supply pipeline (19), wherein the serpentine bone (16) is arranged at one end of the serpentine body (6) close to the serpentine probe (5) and connected to the serpentine probe (5); the angle control wire (17) is divided into two groups, horizontal and vertical, and the angle control wire (17) is inserted into the serpentine bone (16), one end of which is connected to the serpentine probe (5) and the other end is connected to the control handle (7), so that the serpentine body (6) is bent in the horizontal and vertical directions under the control of the control handle (7); one end of the bundled cable (18) is connected to each detection component of the serpentine probe (5), and the other end is connected to the display screen (8) on the top of the control handle (7); one end of the gas-liquid supply pipeline (19) is connected to the gas-liquid supply pipe port (15) of the serpentine probe (5), and the other end is connected to the gas-liquid input pipe port (3) on the side of the control handle (7).

3. The portable snake-shaped life-saving device according to claim 1 is characterized in that: The control handle (7) comprises: a knob (20) and an operating button (21), wherein the knob (20) is divided into two groups, an inner and an outer group, which are arranged on the side of the control handle (7), the inner knob is connected to the horizontal angle control wire, and the outer knob is connected to the vertical angle control wire. When the knob (20) is rotated, it pulls the internal angle control wire (17) of the serpentine body (6), resulting in a length difference between the inner and outer wires in the horizontal or vertical direction, thereby achieving bending of the serpentine body (6). The operating button (21) is arranged on the side of the control handle (7), and is connected to the bundled cable (18) and is used to adjust the brightness of the lighting module (9) in multiple levels and to turn on and off the power of the serpentine life search and rescue instrument body (1).

4. The portable snake-shaped life-saving device according to claim 1 is characterized in that: The three-way switch (31) comprises: a gas input port (35), a liquid input port (36), a gas-liquid output port (37), a housing (38), a telescopic pull rod (39), a top ball (40) and a limit groove (41). The three-way switch (31) is used to output gas or liquid to the gas-liquid output pipe port (37). The internal structure of the three-way switch (31) is a three-section structure and a top ball limit structure. One section is a gas release gear, the other section is a liquid release gear, and the middle section is a stop release gear. The telescopic pull rod (39) is a gas switch and a liquid switch when it is fully pushed in and when it is fully pulled out. When it is pulled to the half position, it indicates that it enters the closed gear. The top ball (40) is arranged inside the three-way switch (31), and the limit groove (41) is arranged on the telescopic pull rod (39).

5. The portable snake-shaped life-saving device according to claim 1 is characterized in that: The gas cylinder (25) is an empty exhalation cylinder.

6. The portable snake-shaped life-saving device according to claim 1, characterized in that: The snake-shaped probe (5) comprises: an illumination module (9), a visible light camera (10), an infrared thermal imaging camera (11), a loudspeaker (12), a microphone (13), and a gas-liquid supply nozzle (15).

7. The portable snake-shaped life-saving device according to claim 1 is characterized in that: The display screen (8) comprises: a Bluetooth module (22), a wireless image transmission module (23), an antenna (24), a voice intercom module (42) and a battery module (43); the Bluetooth module (22), the wireless image transmission module (23), the voice intercom module 42 and the battery module 43 are arranged inside the display screen (8), and the antenna (24) is arranged outside the display screen (8).

8. The portable snake-shaped life-saving device according to any one of claims 1 to 7, characterized in that: The diameter of the snake-shaped probe (5) is less than 3 cm.

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