Rescue device for trapped persons in small-caliber well

Abstract

The rescue device comprises a rescue rod, the rescue rod is formed by connecting a plurality of sections of steel pipes in a sleeved mode, a lifting handle is arranged on each section of steel pipe, a hanging ring is installed at the upper end of the top section of steel pipe, a gas cylinder is arranged below the top section of steel pipe, and a connecting nozzle of the gas cylinder is communicated with an inner cavity of the steel pipe. Air holes for conveying air are formed in the bottom section steel pipe, a folding pedal is arranged at the bottom end of the bottom section steel pipe, the folding pedal is fixedly connected with the bottom section steel pipe in a foldable mode, a spring buckle is arranged on the bottom section steel pipe, and the folded folding pedal is clamped through the spring buckle. According to the rescue device, rescue workers do not need to go down a well, the underground state can be directly observed from the well by means of the rescue device, the position and the physical condition of trapped persons can be judged, the rescue materials can be put in an auxiliary mode, fresh air can be conveyed, under specific conditions, the trapped persons stand on the bounced folding pedal, the rescue workers can safely pull the trapped persons out of a well mouth, and the rescue work efficiency is improved. And rescue is completed.

Description

Technical Field

[0001] This utility model relates to the field of fire rescue technology, and in particular to a rescue device for people trapped in small-diameter wells. Background Technology

[0002] Rescue methods for small well openings are diverse and can be flexibly selected based on different scenarios. Common methods include setting up a rescue tripod at the well opening, and then using pulleys, winches, and ropes for the rescue; or, when the well is deep or the surrounding terrain is complex, securing ropes around the well opening before rescuers, equipped with gear, descend to the bottom. Rescuers, wearing safety harnesses and descenders, connect the rope to the harness via the descender and then slowly descend into the well. Upon reaching the trapped person, a safety harness is secured or ropes are used to secure them, and finally, with the assistance of personnel above ground, both the trapped person and the rescuers are pulled to the surface using ropes.

[0003] When encountering extremely small well openings inaccessible to rescuers, the first step is to assess the well's size, depth, and the condition of the trapped individuals. Ventilation equipment and gas detection are used to ensure a safe environment inside the well. Communication is then established (through verbal communication or equipment), and lighting and supplies are deployed to stabilize the trapped individuals' emotions. Common methods for deploying rescue equipment include rope deployment, drone deployment, and long pole deployment. Ventilation requires a small portable fan, with its outlet connected to a ventilation duct compatible with the well opening. The ventilation duct should be extended as far into the well as possible, close to the trapped individuals. The fan is then turned on to force fresh air into the well.

[0004] When a trapped person is capable of self-rescue, they can be organized to do so by lowering ropes. Rescuers lower ropes into the shaft and instruct the trapped person to secure the ropes to their body, then work together to lift them to the well opening. However, for wells with a diameter of less than 25 centimeters, especially when children are trapped, this method carries the risk of communication breakdowns and operational errors. Therefore, in such cases, it is usually necessary to gradually enlarge the well opening until the trapped person can be safely rescued, or to dig a rescue channel from one side of the well opening. This highlights the importance of developing equipment that facilitates the delivery of lighting, rescue supplies, ventilation, and assistance to those trapped in small wells. Summary of the Invention

[0005] This utility model provides a rescue device for people trapped in small-diameter wells, which can provide lighting, drop emergency rescue supplies and deliver fresh air to the well during the rescue process and assist them in getting out of the well.

[0006] The purpose of this utility model is achieved as follows:

[0007] A rescue device for trapped personnel in a small-diameter well includes a rescue rod composed of multiple interlocking steel pipe sections. Each steel pipe section has a lifting handle perpendicular to it. A lifting ring is installed at the top end of the top steel pipe section after sealing, with a gas cylinder located below it. The gas cylinder's connector is connected to the inner cavity of the steel pipe. An air vent is provided on the bottom steel pipe section, and a folding pedal is located at its bottom end. The folding pedal is foldable and fixedly connected to the bottom steel pipe section. A spring clip is located above the folding pedal on the bottom steel pipe section. When the folding pedal is folded up, the spring clip holds it in place. A release ring is attached to the pin of the spring clip, and a pull rope is attached to the release ring. The pull rope runs along the multiple steel pipe sections and is fixed to the lifting ring on the top steel pipe section.

[0008] Furthermore, the spring clip includes a pin, a spring, a limiting nut, a first mounting base, and a second mounting base; the pin is a threaded slender rod with a pull ring at one end; the first and second mounting bases are fixedly connected to the bottom section steel pipe at intervals, and the first and second mounting bases are provided with through holes. The other end of the pin passes through the first mounting base and the spring in sequence, then screws into the limiting nut, and then passes through the second mounting base. The end of the pin with the pull ring is stuck on the first mounting base, and the screwed-in limiting nut locks the pin between the first and second mounting bases against the spring. The other end of the pin protrudes from the second mounting base, and the protruding end is used to lock the upright folding pedal.

[0009] Furthermore, a lighting device is installed on one section of the multi-section steel pipe.

[0010] Furthermore, a fall-prevention gripping frame is installed on the bottom section of the steel pipe to prevent secondary injuries caused by falling foreign objects and to assist in gripping.

[0011] The beneficial effects of this utility model are as follows: A rescue device for trapped personnel in small-diameter wells is particularly suitable for complex rescue environments with narrow well openings and deep wells. It can complete complex tasks such as transporting mission materials and fresh air over long distances. Without the need for rescuers to go down into the well, the device allows for direct observation of the well's condition from the surface, accurately determining the location and physical condition of the trapped personnel. This provides a strong basis for selecting subsequent rescue equipment, greatly improving the accuracy and efficiency of the rescue. In specific situations, the trapped personnel can stand on the unfolded folding plate, and rescuers can safely pull the trapped personnel out of the well using the small-diameter well rescue device, thus completing the rescue.

[0012] The present invention will be further explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2This is a schematic diagram of the top section steel pipe structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the extended steel pipe structure in the middle of this utility model;

[0016] Figure 4 This is the main view of the bottom section steel pipe of this utility model;

[0017] Figure 5 This is a side view of the bottom section steel pipe of this utility model;

[0018] Figure 6 This is a schematic diagram of the spring-loaded buckle structure of this utility model.

[0019] In the diagram: 1 Lighting equipment, 2 Rescue pole, 3 Pull rope, 4 Gas cylinder, 5 Lifting handle, 6 Top section steel pipe, 7 Bottom section steel pipe, 8 Unlocking ring, 9 Middle extension steel pipe, 10 Pin, 11 Spring, 12 Limiting nut, 13 First mounting base, 14 Second mounting base, 61 Lifting ring, 62 Gas cylinder connection nozzle, 71 Vent hole, 72 Folding pedal, 73 Spring buckle, 74 Fall protection grip frame. Detailed Implementation

[0020] Example 1:

[0021] A rescue device for people trapped in small-diameter wells, such as Figure 1-6 As shown, the rescue pole 2 is composed of multiple steel pipe sections that are interlocked. Each steel pipe section has a lifting handle 5 perpendicular to it. During a rescue, the lifting handle 5 can help rescuers lift the rescue pole 2. The length of the rescue pole 2 can be adjusted by adding or removing the middle extension steel pipe 9.

[0022] After the upper end of the top section steel pipe 6 is sealed, a lifting ring 61 is installed for connecting lifting equipment, such as cranes, drones, and wellhead tripods. Below this is a gas cylinder 4, with a gas cylinder connector 62 connected to the inner cavity of the steel pipe. An air vent 71 is provided on the bottom section steel pipe 7 for air delivery. During rescue operations, compressed air can be delivered to the well via the air vent 71 at the lower end of the bottom section steel pipe 7 through the inner cavity of the steel pipe, providing air support for trapped personnel.

[0023] A folding pedal 72 is provided at the bottom end of the bottom section steel pipe 7. The folding pedal 72 is foldable and fixedly connected to the bottom section steel pipe 7. A spring buckle 73 is provided on the bottom section steel pipe 7 above the folding pedal 72. When it is lowered, it is in a folded state. When the folding pedal 72 is folded up, the spring buckle 73 locks the folding pedal 72 in the upright state. A release pull ring 8 is provided on the pin 10 of the spring buckle 73. A pull rope 3 is attached to the release pull ring 8. The pull ring end of the pull rope 3 is fixed to the lifting ring 61 of the top section steel pipe 6 along the multi-section steel pipe.

[0024] The spring clip 73 includes a pin 10, a spring 11, a limiting nut 12, a first mounting base 13, and a second mounting base 14. The pin 10 is a slender rod with a thread in the middle and a pull ring at one end.

[0025] The first mounting base 13 and the second mounting base 14 are fixedly connected to the bottom section steel pipe 7 at intervals. Both the first mounting base 13 and the second mounting base 14 are provided with through holes that are adapted to the outer diameter of the pin 10. The pin 10 passes through the first mounting base 13 and the spring 11 in sequence, then is screwed into the limiting nut 12 and then passes through the second mounting base 14. One end of the pin 10 with the pull ring is stuck on the first mounting base 13. The screwed-in limiting nut 12 locks the pin 10 between the first mounting base 13 and the second mounting base 14 and presses it against the spring 11. The other end of the pin 10 protrudes from the second mounting base 14. The protruding end is used to lock the upright folding pedal 72.

[0026] When the pin 10 begins to pass through the first mounting base 13, the through hole on the mounting base provides initial guidance for the pin 10, limiting the pin 10 to move only in the axial direction of the through hole and preventing it from radially deviating during the initial stage of insertion.

[0027] Spring 11 is fitted onto pin 10, with its inner diameter slightly larger than the outer diameter of pin 10, allowing pin 10 to slide freely within the spring. One end of spring 11 abuts against the first mounting base 13, and the other end abuts against the limiting nut 12. When the pull ring of pin 10 is pulled, pin 10 moves axially and compresses spring 11; when the pull ring is released, spring 11, by virtue of its elastic restoring force, pushes pin 10 to move in the opposite direction and reset.

[0028] The limiting nut 12 is threadedly engaged with the pin 10, and its position on the pin can be adjusted by rotation. When the pin 10 is pulled, the limiting nut 12 moves with the pin.

[0029] The through hole on the second mounting base 14 serves as a secondary guide and positioning device for the pin 10.

[0030] A fall protection frame 74 is installed on the bottom section steel pipe 7. The fall protection frame 74 is a protective frame made of two cross-welded elliptical steel pipe frames, which is fixedly welded to the bottom section steel pipe 7. The fall protection frame 74 can prevent foreign objects from falling and causing secondary injury to the trapped personnel, and can also assist the trapped personnel in grabbing when being lifted.

[0031] Once the rescue rod 2 is lowered to the designated position in the well, rescuers can pull the ring on the rope 3 located on the top section of the steel pipe 6. A spring at the connection between the folding pedal 72 and the steel pipe will automatically open the folding pedal 72. The folding pedal 72 is used to assist in pulling out trapped personnel. Once the trapped personnel stand on the opened folding pedal 72, rescuers can pull them out. It is also used to transport small rescue items.

[0032] The rescue pole 2 is equipped with lighting equipment 1 and a long-distance video camera. When the lighting equipment is turned on, it illuminates the underground environment, and the video camera transmits the captured images from the underground to the surface, allowing rescuers to clearly observe the situation underground, accurately determine the location and physical condition of the trapped personnel, and provide a basis for rescue decisions.

[0033] Finally, it should be noted that the above is only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the preferred arrangement, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model.

Claims

1. A rescue device for trapped personnel in a small-diameter well, comprising a rescue rod (2), characterized in that, The rescue pole (2) is composed of multiple interlocking steel pipe sections. A lifting handle (5) is installed perpendicular to each steel pipe section. A lifting ring (61) is installed after sealing the upper end of the top steel pipe section (6), below which is a gas cylinder (4). The gas cylinder connector (62) is connected to the inner cavity of the steel pipe. An air vent (71) for air delivery is provided on the bottom steel pipe section (7). A folding pedal (72) is provided at the bottom end of the bottom steel pipe section (7). The folding pedal (72) is foldable. It is fixedly connected to the bottom section steel pipe (7). A spring buckle (73) is provided on the bottom section steel pipe (7) above the folding pedal (72). When the folding pedal (72) is folded up, the spring buckle (73) will hold the folding pedal (72) upright. A release pull ring (8) is provided on the pin (10) of the spring buckle (73). A pull rope (3) is attached to the release pull ring (8). The pull rope (3) is fixed to the lifting ring (61) of the top section steel pipe (6) along the multi-section steel pipe.

2. The rescue device according to claim 1, characterized in that, The spring clip (73) includes a pin (10), a spring (11), a limiting nut (12), a first mounting base (13), and a second mounting base (14); the pin (10) is a threaded slender rod with a pull ring at one end; the first mounting base (13) and the second mounting base (14) are fixedly connected to the bottom section steel pipe (7) at intervals, and the first mounting base (13) and the second mounting base (14) are provided with through holes, through which the other end of the pin (10) passes in sequence. The first mounting base (13) and spring (11) are then screwed into the limiting nut (12) and then passed through the second mounting base (14). The pin (10) with a pull ring is stuck on the first mounting base (13). The screwed-in limiting nut (12) locks the pin (10) between the first mounting base (13) and the second mounting base (14) against the spring (11). The other end of the pin (10) protrudes from the second mounting base (14) and is used to hold the upright folding pedal (72).

3. The rescue device according to claim 1, characterized in that, A lighting device (1) is installed on one section of the multi-section steel pipe.

4. The rescue device according to claim 1, characterized in that, A fall protection guard (74) is installed on the bottom section steel pipe (7) to prevent foreign objects from falling and causing secondary injuries and to assist in gripping.

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