Automatic balancing lifesaving stretcher
By designing an automatic balanced life-saving stretcher truck with pure mechanical structure, using arc chutes and pulley structures, combined with the gravity of the pendulum, the self-balancing of the stretcher plane is achieved, which solves the problem that existing stretcher trucks cannot self-balance, reduces costs, facilitates operation, and improves safety and efficiency.
Patent Information
- Application Number
- CN202311538704.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-17
- Publication Date
- 2025-05-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing stretcher trucks cannot achieve self-balancing. When transporting injured people on rugged roads, they are prone to secondary injuries to the injured people. They are cumbersome and costly, making it difficult to use them widely.
An automatic balanced life-saving stretcher truck was designed, adopting a pure mechanical structure, including a stretcher, an arc chute and a body bracket. The arc chute and pulley structure are used, combined with the gravity of the pendulum to achieve self-balancing of the stretcher plane.
It realizes self-balancing of the stretcher plane without the help of external forces, which is low in cost, easy to operate, safe and efficient, and is suitable for use in post-disaster rescue.
Smart Images
Figure CN120019800A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of medical devices, and particularly relates to the design of an automatic balance rescue stretcher vehicle. Background Art
[0003] In the current market, most stretcher vehicles cannot achieve self - balance, and it is extremely easy to cause secondary injuries to the wounded when transporting them on rough roads. A few stretcher vehicles can always maintain a horizontal state, but they need to be driven by external forces, either manually controlled, or controlled by sensors plus motors. This has led to cumbersome operations and high prices. Due to the limitations of the number of rescue personnel and rescue costs in post - disaster rescue work, it is difficult to popularize the use of such stretcher vehicles. Summary of the Invention
[0004] The purpose of the present invention is to solve the problems of cumbersome operation, high cost, and difficulty in popularization of existing self - balancing stretcher vehicles, and to propose an automatic balance rescue stretcher vehicle with a pure mechanical structure.
[0005] The technical solution of the present invention is as follows: An automatic balance rescue stretcher vehicle includes a stretcher, arc chutes, and a vehicle body support. At both ends of the upper plane of the vehicle body support, an arc chute is respectively fixed, and both ends of the stretcher slide in the arc chutes through a set of pulleys.
[0006] Preferably, a long rod pendulum is fixedly installed below the center of the stretcher plane, and the self - balance of the stretcher is achieved by relying on its gravity.
[0007] Preferably, the arc chute is semi - circular, and square holes are evenly opened inside. Conical limit blocks are placed in the square holes at both ends of the top of the arc to increase the sliding resistance of the contact surface between the stretcher pulley and the chute, preventing the stretcher plane from shaking violently; rectangular blocks are placed in the remaining square holes to keep the inner surface of the chute smooth, reducing the sliding resistance of the contact surface between the stretcher pulley and the chute, and facilitating the stretcher plane to automatically maintain a horizontal state.
[0008] Preferably, the vehicle body support is equipped with 3 small wheels. Two small wheels are fixedly installed at a position slightly forward of the middle of the vehicle body support, and one small wheel is installed at the rear of the vehicle body support. The rear small wheel can be retracted up and down to cope with different road conditions.
[0009] The beneficial effects of the present invention are as follows: The present invention realizes the self - balance of the stretcher plane by using a pure mechanical structure, with low cost, convenient operation, safety and high efficiency, being conducive to popularization, and having a broad market space. Brief Description of the Drawings
[0010] Figure 1 It is a schematic structural diagram of the automatic balance rescue stretcher vehicle provided by the present invention.
[0011] Description of the reference numerals: 1 - stretcher, 2 - arc chute, 3 - vehicle body bracket. Specific embodiments
[0012] The embodiments of the present invention will be further described below with reference to the accompanying drawings.
[0013] The schematic structural diagram of the automatic balance rescue stretcher vehicle provided by the present invention is as Figure 1 shown, including a stretcher 1, an arc chute 2 and a vehicle body bracket 3. At both ends of the upper plane of the vehicle body bracket 3, an arc chute 2 is respectively fixed. Both ends of the stretcher 1 slide in the arc chute 2 through a set of pulleys. A long rod pendulum is fixedly installed below the center of the stretcher 1 plane, and the self - balance of the stretcher 1 is realized by relying on its gravity. The arc chute 2 is semi - circular, and square holes are evenly opened inside. Conical limit blocks are placed in the square holes at both ends of the top of the arc to increase the sliding resistance of the contact surface between the pulleys of the stretcher 1 and the arc chute 2, preventing the stretcher 1 plane from shaking violently; rectangular blocks are placed in the remaining square holes to keep the inner surface of the arc chute 2 smooth, reducing the sliding resistance of the contact surface between the pulleys of the stretcher 1 and the arc chute 2, and facilitating the stretcher 1 plane to automatically maintain a horizontal state. The vehicle body bracket 3 is equipped with 3 small wheels. Two small wheels are fixedly installed at a position slightly forward of the middle of the vehicle body bracket 3, and one small wheel is installed at the rear of the vehicle body bracket 3. The rear small wheel can be retracted up and down to cope with different road conditions.
[0014] The working process of the automatic balance rescue stretcher vehicle provided by the present invention is as follows:
[0015] (1) When the stretcher vehicle moves on a horizontal road surface, the stretcher 1 will remain relatively stationary with the arc chute 2 and the vehicle body bracket 3.
[0016] (2) When the stretcher vehicle moves from a horizontal road surface to an inclined plane, at the initial moment, the stretcher 1 will tilt together with the arc chute 2 and the vehicle body bracket 3. After that, due to the load of the stretcher 1 and the gravity of the long rod pendulum, a reverse torque that promotes the stretcher 1 plane to be horizontal will be generated, causing the stretcher 1 to slide along the arc chute 2 to the horizontal position and maintain a horizontal state.
[0017] (3) When the stretcher vehicle moves from an inclined plane to a horizontal road surface, at the initial moment, the stretcher 1 will remain inclined at the relative position with the arc chute 2 and the vehicle body bracket 3 on the inclined plane. After that, due to the load of the stretcher 1 and the gravity of the long rod pendulum, a reverse torque that promotes the stretcher 1 plane to be horizontal will be generated, causing the stretcher 1 to slide along the arc chute 2 to the horizontal position and maintain a horizontal state.
[0018] Generally speaking, the beneficial effect of the present invention is that without relying on external forces, the self - balance of the stretcher plane is realized by a pure mechanical structure, making the stretcher plane always almost parallel to the horizontal plane. Specifically, it is manifested in the following two aspects:
[0019] (1) The function of automatically maintaining a horizontal state is realized.
[0020] The automatic leveling of the stretcher plane is achieved by using an arc chute structure. This pure mechanical structure has a low cost and good performance. A pendulum structure is designed under the stretcher plane. When on an inclined plane, the gravity of the load itself and the pendulum generates a rotational torque that forces the plane to be horizontal. Conical limit blocks are provided at both ends inside the arc chute, which can minimize the harm caused by fluctuations to the wounded.
[0021] (2) The stretcher trolley has a separable function.
[0022] Ordinary stretcher trolleys often occupy a large amount of space when idle, bringing many inconveniences to medical work. In the present invention, when the stretcher trolley is not in use, it can be easily separated into three parts, which is beneficial for storage and saves space. When the stretcher trolley is needed, the assembly is also very simple and fast.
[0023] Those of ordinary skill in the art will realize that the embodiments described herein are for helping the reader understand the principles of the present invention, and it should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific deformations and combinations without departing from the essence of the present invention based on the technical revelations disclosed in the present invention, and these deformations and combinations are still within the protection scope of the present invention.
Claims
1. An automatic balancing life-saving stretcher, characterized in that: The stretcher comprises a stretcher (1), an arc chute (2) and a vehicle body support (3); an arc chute (2) is respectively fixed at both ends of the upper plane of the vehicle body support (3); and both ends of the stretcher (1) slide in the arc chute (2) via a set of pulleys.
2. The automatic balancing life-saving stretcher according to claim 1, characterized in that: A long-rod pendulum is fixedly installed below the center of the plane of the stretcher (1).
3. The automatic balancing life-saving stretcher according to claim 1, characterized in that: The arc slide groove (2) is semicircular and has square holes evenly opened inside; conical limit blocks are placed in the square holes at both ends of the top of the arc, and rectangular blocks are placed in the remaining square holes.
4. The automatic balancing life-saving stretcher according to claim 1, characterized in that: The vehicle body support (3) is equipped with three small wheels, two of which are fixedly installed at the front middle of the vehicle body support (3), and one small wheel is installed at the rear of the vehicle body support (3); the rear small wheel can be retracted and extended up and down.