Portable observation type monkey car emergency stretcher for mine

Abstract

The application discloses a portable observable monkey car first-aid stretcher for mine, which comprises front and rear monkey car assemblies, a 180-degree semicircular curved rod and a stretcher bearing assembly. The front monkey car main rod is shorter than the rear monkey car main rod, and the height difference between the front and rear monkey car main rods is used to adapt to the slope of a slope roadway, so that the stretcher is naturally maintained in a horizontal state. The lower ends of the front and rear monkey car assemblies are connected with the stretcher steel pipe through the semicircular curved rod, and the curved rod is connected with the monkey car rod and the stretcher steel pipe, and embedded locking mechanisms are arranged at the connecting positions of the curved rod, the monkey car rod and the stretcher steel pipe to realize double anti-disengagement limiting. The stretcher is provided with three layers of independent safety belts in the length direction, and the safety belts are used for fixing the wounded person. The rear monkey car retains the original monkey car seat, and the seat can be used by the rescuer to observe the state of the wounded person in real time and to operate the emergency stop pull line. The whole monkey car is modularized and designed in a split mode, can be quickly disassembled and assembled, and the assembly can be quickly completed by one person. The monkey car can be directly matched with the existing monkey car steel wire rope cableway of the mine, is suitable for long-distance transfer of wounded persons in various long and short slope shafts, and has the advantages of low cost and high practicability.

Description

Technical Field

[0001] This invention belongs to the technical field of emergency rescue and transportation equipment in coal mines, and is particularly suitable for a special emergency stretcher for transporting injured miners in long-distance inclined shafts using a cable car. Specifically, it relates to a portable and observable cable car emergency stretcher for mining. Background Technology

[0002] Coal mining is a high-risk industry. The length of the inclined shafts in deep mines is generally hundreds to thousands of meters. When underground workers are injured, they need to be transported lying flat to avoid aggravating their injuries. Existing hoisting devices require the injured to sit upright, so hoisting devices cannot be used for transportation. Instead, stretchers must be carried manually from the bottom of the mine to the top, which takes a very long time and can easily delay the best rescue opportunity. Existing rescue stretchers adapted to hoist-type cableways exist, but they suffer from several inherent drawbacks: Current hoist-type stretchers are cumbersome to install, and the stretcher assembly is mounted on two booms of the hoist, resulting in poor stability, swaying, difficulty in observing the injured person's condition, and a risk of secondary injury. The injured person is only secured with a single strap, making them prone to slippage and rollover during transport, providing insufficient safety. For inclined shafts, existing stretchers rely on external ropes and pads for manual leveling, a cumbersome process that is difficult to quickly achieve in emergencies, and tilting the injured person can worsen their injuries. The stretcher connections use only simple pins and buckles, which can easily loosen with repeated use, posing a risk of the stretcher falling. Furthermore, the lack of a dedicated observation station prevents rescuers from closely monitoring the injured person's consciousness and bleeding, hindering timely intervention in emergencies. Therefore, a completely new structured hoist-type emergency stretcher is urgently needed to overcome these shortcomings. Summary of the Invention

[0003] To address the shortcomings of existing monkey-drawn rescue stretchers, such as cumbersome assembly and disassembly, swaying during operation, inability to automatically level during transport in inclined shafts, insecure fixation of the injured, lack of accompanying observation positions, and easy slippage of connecting structures, this invention provides a portable and observable monkey-drawn emergency stretcher for mining. It achieves comprehensive technical effects including quick assembly and disassembly by a single person, adaptive horizontal support in inclined shafts, stable and sway-proof stretcher operation, multiple fixation of the injured in different areas, full-time monitoring by rescue personnel, and double locking to prevent slippage.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A portable and observable emergency stretcher for mining, characterized in that it includes a front stretcher assembly, a rear stretcher assembly, two sets of 180° semi-circular arc-shaped curved rods, and a stretcher bearing assembly; Both the front and rear monkey car assemblies are equipped with rope clamps on their tops, which are attached to the monkey car wire ropes. The main rod length of the front monkey car assembly is shorter than that of the rear monkey car assembly. The rear monkey car assembly is equipped with an integrated monkey car seat. The two sets of 180° semi-circular arc-shaped curved rods are respectively installed at the front and rear ends of the stretcher support assembly; a locking device is provided between the middle of the arc-shaped curved rod and the main rod of the stretcher; an embedding hole is opened in the middle of the arc-shaped curved rod; the lower ends of the front stretcher assembly and the rear stretcher assembly are respectively embedded into the embedding holes of the corresponding arc-shaped curved rods and locked by detachable bolts; both ends of the arc-shaped curved rod are connected to the stretcher steel pipe of the stretcher support assembly; a locking device is provided between the arc-shaped curved rod and the stretcher steel pipe. The stretcher support assembly includes a stretcher steel pipe and a stretcher plate. The stretcher support assembly is provided with three layers of safety belts at intervals along its length. The two ends of the three layers of safety belts are respectively connected to the stretcher steel pipe. The three layers of safety belts correspond to the head area, the middle torso area, and the lower limb area of ​​the injured person.

[0005] Furthermore, the locking device includes mounting and embedding holes opened on the front and rear main rods of the monkey cart, the arc-shaped curved rod, and the stretcher steel pipe. The bolts are welded to the outside of the embedding holes, and the adjustable screw passes through the nut and the embedding holes to achieve the fastening and limiting of the arc-shaped curved rod to the main rods of the monkey cart and the stretcher steel pipe.

[0006] Furthermore, the 180° semi-circular arc-shaped curved rod has a semi-circular embracing structure, and the arc-shaped curved rod completely wraps around the lower ends of the front and rear main rods of the monkey cart and the ends of the stretcher steel pipes to improve the stability of the suspension force.

[0007] Furthermore, the rear monkey car assembly is equipped with an emergency stop cable, which extends to the monkey car seat area.

[0008] Furthermore, all three safety belts are adjustable tension safety belts, with both ends of each safety belt detachably fixed to both sides of the stretcher steel pipe, allowing for independent adjustment of tension according to the injured person's body shape.

[0009] The beneficial effects of this invention are: 1. The inclined shaft features adaptive automatic leveling, eliminating the need for manual adjustment. This invention adopts a differentiated main pole design for the stretcher, with a shorter front and longer rear main pole creating a height difference. This adapts to inclined shafts with any tilt angle, ensuring the stretcher remains naturally horizontal. This significantly shortens rescue assembly time and avoids delays in rescue operations caused by manual leveling.

[0010] 2. The 180° semi-circular curved rod surrounds and suspends the structure, significantly improving its anti-sway capability. The present invention features a double semi-circular curved rod that completely encloses the load-bearing component, resulting in even force distribution. This significantly reduces stretcher sway when the cableway accelerates, decelerates, or curves, thereby minimizing the risk of secondary injury to the injured.

[0011] 3. Double embedded locking structure, double anti-loosening safety protection This invention features a welding nut and adjustable screw locking device at two points: the curved rod and the monkey cart pole, and the curved rod and the stretcher steel pipe. This double-limiting device overcomes the defects of existing pins and buckles that are prone to loosening, eliminates the safety hazard of stretchers falling from heights, and provides a higher level of safety.

[0012] 4. Three-layer independent safety belts provide all-around restraint for the injured. Existing technologies use only a single, simple strap. This invention features three independent safety belts for the head and shoulders, torso, and lower limbs, providing zoned fixation to prevent the injured person from sliding forward or backward or rolling side to side during transport. It also provides stable support for patients with fractures or traumatic brain injuries.

[0013] 5. Dedicated observation station for rear-view care, equipped with emergency stop control. The rear of the vehicle is equipped with a monkey seat, allowing rescuers to accompany the injured person closely to check their complexion, wounds, and level of consciousness throughout the process. It is also equipped with a nearby emergency stop cable, which can immediately stop the machine in case of an emergency, solving the problem of the lack of a fixed monitoring position in the current technology.

[0014] 6. Modular quick-release structure, convenient storage and high assembly efficiency. The curved rod and the monkey cart are quickly assembled and disassembled with bolts. The entire set of equipment can be disassembled and stored in the bottom chamber of the mine without occupying the passage space of the roadway. During underground rescue, a single person can complete the assembly of the monkey cart, curved rod and stretcher. The assembly speed is far superior to the complex hinged and multi-part combination structure in the comparison document.

[0015] 7. Universally compatible with existing cable car systems, low modification cost. It only relies on the rope clamp to attach the existing steel wire rope, without the need to modify the existing hoist drive and cableway equipment in the mine. The equipment has low manufacturing cost and can be directly put into use in various large, medium and small coal mine inclined shafts, making it highly scalable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the portable and observable monkey cart emergency stretcher for mining, as described in this invention.

[0017] Figure label: 1-Rope clamp, 2-Front scooter assembly, 3-Locking bolt, 4-Arc-shaped rod, 5-Locking device, 6-Layered safety belt, 7-Stretcher steel pipe, 8-Stretcher plate, 9-Embedded hole, 10-Rear scooter assembly, 11-Scooter seat, 12-Emergency stop cable. Detailed Implementation

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

[0019] Example 1: like Figure 1 As shown, this embodiment includes a front monkey cart assembly 2, a rear monkey cart assembly 10, two sets of 180° semi-circular arc-shaped curved rods 4, and a stretcher bearing assembly; The front hoist assembly 2 and the rear hoist assembly 10 are respectively fixed with rope clamps 1 at their top ends. The rope clamps 1 adopt the standard hoist wire rope buckle structure, which can directly clamp the existing cableway wire rope in the mine. The main pole of the front hoist assembly 2 is 350mm shorter than the main pole of the rear hoist assembly 10, which is suitable for the conventional 15°~30° inclined shaft inclination angle of coal mines, so that the stretcher can be kept horizontal naturally. The rear hoist assembly 10 has an integrated welded hoist seat 11, which serves as the work position for rescue personnel.

[0020] Two sets of 180° semi-circular curved rods 4 are respectively arranged at the front and rear ends of the stretcher. A rectangular embedding hole 9 is opened in the middle of the curved rod. The lower end rods of the front and rear trolleys are embedded in the embedding hole 9. The transverse locking bolts 3 pass through the curved rod and complete the initial fixation with the main rod of the trolley. The two ends of the curved rod are respectively fastened to the ends of the stretcher steel pipes 7 on both sides. Locking devices 5 are installed at the two docking positions between the curved rod 4 and the main rod of the trolley, and between the curved rod 4 and the stretcher steel pipe 7.

[0021] Locking device 5 structure: An 8mm diameter assembly hole is opened at the lower end of the main pole of the monkey car and the end of the stretcher steel pipe 7. An M8 nut is welded to the outside of the assembly hole. The matching M8 adjustable screw is screwed into the nut to tighten the arc-shaped curved rod, realizing double anti-disengagement limit and preventing gap shaking during transportation.

[0022] The stretcher support assembly is formed by welding two parallel stretcher steel pipes 7 and stretcher plate 8. The stretcher plate 8 is made of high-strength anti-slip patterned steel plate. The stretcher is equipped with three layers of safety belts 6 along its length. The first layer of safety belts corresponds to the head and shoulders of the injured person, the second layer corresponds to the chest and torso, and the third layer corresponds to the legs. The two ends of each safety belt are fixed to both sides of the stretcher steel pipe by quick-release buckles and can be adjusted individually.

[0023] The rear monkey car assembly is equipped with an emergency stop cable 12, which extends to the monkey car seat 11 seating area.

[0024] Assembly process in this embodiment: 1. The disassembled front hoist assembly, rear hoist assembly, curved rod, and stretcher support components are routinely stored in the hoist waiting chamber at the bottom of the main shaft. 2. After a personnel injury accident occurs underground, the rescue personnel will move the entire set of equipment to the location of the injured person, lay the injured person flat and transfer them to the stretcher board 8, and tighten the three-layer safety belts 6 in sequence to secure the injured person; 3. Stop the underground hoisting car's cyclic operation and attach the rope clamp 1 on the top of the front and rear hoisting cars to the same cross section of the cableway wire rope; 4. In use, erect the curved rods, insert the lower ends of the front and rear trolleys into the insertion holes 9 of the front and rear curved rods 4 respectively, and tighten the locking bolts 3; then fasten the two ends of the curved rods to the stretcher steel pipes 7, and tighten the adjustable screws inside the locking device 5 to prevent slippage. The stretcher board 8 is fixed between the stretcher steel pipes 7. The stretcher steel pipes 7 are equipped with three layers of safety belts 6 at the front, middle and rear to secure the injured person.

[0025] 5. Rescue personnel sit in the rear seat 11 of the hoist and start the hoist to transfer the injured person upwards along the inclined shaft. During the transfer, the rescue personnel closely observe the condition of the injured person. If a sudden emergency occurs, they directly pull the emergency stop cable 12 to stop the hoist and carry out on-site first aid. 6. After the stretcher is transported to the wellhead, loosen the adjustable screw of the locking device 5 and the locking bolt 3, disassemble the arc-shaped rod, the monkey cart, and the stretcher, transfer the injured person to the ground emergency vehicle, and transport all disassembled parts back to the bottom of the well for unified storage.

[0026] Example 2: This embodiment is an optimized version for deep wells with large inclination angles. For deep mining wells with shaft inclination angles of 30° to 40°, the dimensional parameters are optimized based on Embodiment 1: the main boom of the front hoist is shortened by 450mm compared to the main boom of the rear hoist, increasing the height difference between the high and low booms to offset the larger roadway inclination angle and ensure that the stretcher is absolutely horizontal; The 180° semi-circular curved rod is forged from a single piece of thickened 10mm stainless steel to enhance load-bearing strength; the locking device is equipped with an extended adjustable screw to accommodate the thickened curved rod and steel pipe; the three-layer safety belt is widened to 80mm to increase the contact area with the injured person's body and reduce local pressure; the rear monkey seat is equipped with an anti-slip soft pad to improve the comfort of paramedics during long-distance transport; the emergency stop cable is extended to 1.2m to accommodate paramedics of different heights.

[0027] The remaining assembly structure, connection method, and protective structure are completely consistent with those of Example 1, and can be adapted to long-distance transfer of wounded in ultra-steep inclined shafts. Example 3:

[0028] This embodiment is an embodiment based on embodiment 1, which is a quick and lightweight embodiment. It is designed for short-distance inclined shafts in small coal mines. The stretcher steel pipe is made of high-strength aluminum alloy pipe, and the curved rod adopts a hollow semi-circular one-piece molding structure to reduce the overall weight. A single person can carry the entire stretcher. The curved rod and the monkey car are connected by a butterfly-shaped hand-tightening bolt, which does not require a wrench and allows for quick assembly and disassembly in tool-less underground scenarios. All three-layer safety belts are secured with quick-release Velcro and buckles, doubling the speed of placing and untying injured personnel. The entire set of equipment can be disassembled and stored in a standard underground tool cabinet, taking up very little space.

[0029] This invention is not limited to the above embodiments. Any technical solutions obtained by those skilled in the art without departing from the core concept of this invention, such as automatic leveling of the main pole of the monkey car with different lengths, 180° semi-circular arc-shaped curved rod for encircling suspension, double embedded locking, three-layer partitioned safety belt, and emergency stop cable for the rear companion monkey car seat, by equivalent substitution or simple modification of the component size, material, and accessories, are all within the scope of the technical solution concept of this invention.

Claims

1. A portable, observable monkey-cart emergency stretcher for mining, characterized in that: Includes front monkey car assembly (2), rear monkey car assembly (10), two sets of 180° semi-circular arc-shaped curved rods (4), and stretcher bearing components; Both the front monkey car assembly (2) and the rear monkey car assembly (10) are equipped with rope clamps (1) on their tops, and the rope clamps (1) are attached to the monkey car wire ropes; the main rod length of the front monkey car assembly (2) is less than the main rod length of the rear monkey car assembly (10); the rear monkey car assembly (10) is equipped with an integrated monkey car seat (11). The two sets of 180° semi-circular arc-shaped curved rods (4) are respectively set at the front end and rear end of the stretcher bearing assembly; a locking device (5) is configured between the middle of the arc-shaped curved rod (4) and the main rod of the monkey cart; the two ends of the arc-shaped curved rod (4) are connected to the stretcher steel pipe (7) of the stretcher bearing assembly; and a locking device (5) is configured between the arc-shaped curved rod (4) and the stretcher steel pipe (7). The stretcher support assembly includes a stretcher steel pipe (7) and a stretcher plate (8). The stretcher support assembly is provided with three layers of safety belts (6) at intervals along its length. The two ends of the three layers of safety belts (6) are respectively connected to the stretcher steel pipe (7). The three layers of safety belts (6) correspond to the head area, the middle torso area, and the lower limb area of ​​the injured person.

2. The portable, observable monkey cart emergency stretcher for mining as described in claim 1, characterized in that: The locking device (5) includes mounting and embedding holes (9) on the front and rear main rods of the monkey car, the arc-shaped curved rod (4), and the stretcher steel pipe (7). The bolt (3) is welded to the outside of the embedding hole (9). The adjustable screw passes through the nut and the embedding hole (9) to achieve the fastening and limiting of the arc-shaped curved rod (4) to the main rod of the monkey car and the stretcher steel pipe (7).

3. The portable, observable monkey cart emergency stretcher for mining as described in claim 1, characterized in that: The 180° semi-circular curved rod (4) has a semi-circular embracing structure. The curved rod (4) completely wraps around the lower ends of the front and rear main rods of the monkey car and the ends of the stretcher steel pipe (7) to improve the stability of the suspension force.

4. The portable, observable monkey cart emergency stretcher for mining as described in claim 1, characterized in that: The rear monkey car assembly is equipped with an emergency stop cable (12), which extends to the seating area of ​​the monkey car seat (11).

5. A portable, observable monkey cart emergency stretcher for mining as described in claim 1, characterized in that: The three-layer safety belts (6) are all adjustable tightening safety belts. The two ends of each safety belt can be detachably fixed to both sides of the stretcher steel pipe (7) and the tightness can be adjusted independently according to the body size of the injured person.

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