Hand-operated wounded person carrying auxiliary device
The hand-cranked casualty transport device, which uses a human-powered track and transmission system, solves the problems of difficult casualty transport and complex equipment in existing technologies, and realizes safe and efficient casualty transport in various terrains.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2026-03-13
AI Technical Summary
Existing technologies for transporting large numbers of wounded soldiers to the front lines have problems such as requiring a large number of manpower, long operation time, easy falls, and complex and easily damaged equipment. In addition, electric lifting vehicles are not suitable for front-line treatment due to their large size, heavy weight, dependence on electricity, and high ground requirements.
A hand-cranked patient transport aid device was designed, consisting of a long straight track, a short straight track, a tail track, and a power mechanism. Combined with an adjustable angle limiter and a transmission wheel system, it is driven by human power via belt transmission and equipped with a rubber flatbed cart and safety belt, making it suitable for various terrains.
It enables safe, labor-saving, and portable patient transport in various terrains, reducing manpower requirements, avoiding reliance on electricity, simplifying equipment structure, and improving operational efficiency and safety.
Smart Images

Figure CN223987985U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a hand-cranked auxiliary device for transporting wounded soldiers. Background Technology
[0002] Currently, the evacuation of large numbers of wounded soldiers mainly relies on military transport vehicles. Moving stretcher-bound or unsuitable-to-climb wounded soldiers into transport vehicles is difficult due to three main reasons: first, it requires a large amount of manpower; second, there is a risk of falls during the lifting and transport process; and third, the operation takes too long.
[0003] Some patents propose electric lifting vehicles that can solve the above problems, but they are not suitable for frontline emergency treatment for the following reasons: 1. They are large and heavy, making them inconvenient to carry. 2. They rely on electricity, and their power is easily limited. 3. They have high requirements for ground conditions. 4. The system is complex, prone to damage, and difficult to repair quickly. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a hand-cranked auxiliary device for transporting wounded soldiers.
[0005] The present invention adopts the following technical solution:
[0006] This utility model consists of a transport component and a flatbed vehicle. The transport component comprises a long straight track, a short straight track, a tail track, and a power mechanism.
[0007] The upper end faces of the long straight track and the short straight track are hinged together, the short straight track is hinged together with the lower end face of the tail track, and an adjustable front limiter is provided. The long straight track is hinged together with the upper end face of the power mechanism, and an adjustable rear limiter is provided.
[0008] The long straight track, short straight track, and tail track are equipped with mutually compatible flatbed transport tracks at their upper ends. A first drive wheel is installed on the long straight track, and a second drive wheel is installed on the short straight track. The power mechanism is equipped with pulleys, and handles are installed on both sides of the pulleys.
[0009] The flatbed cart is equipped with pulleys at the lower end that are adapted to the flatbed cart's transmission track. The front end of the flatbed cart is equipped with a belt fixing end, and handles are provided on both the front and rear ends of the flatbed cart. A transmission belt is provided between the belt fixing end and the pulley, and the transmission belt is sequentially arranged on the first transmission wheel and the second transmission wheel.
[0010] The first drive wheel is a one-way ratchet.
[0011] The flatbed is equipped with a seat belt, and the upper part of the flatbed is made of rubber.
[0012] The positive effects of this utility model are as follows:
[0013] This invention has several advantages: First, it can be used in any terrain condition. Second, it relies on human power, requiring no electricity and is not limited by power source. Third, it is foldable for easy loading and carrying. Fourth, it is labor-saving, allowing two people to safely transport the wounded. Fifth, it can not only transport the wounded but also, when necessary, transport heavy containers. Attached Figure Description
[0014] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Appendix Figure 2 This is a schematic diagram of the working structure of this utility model.
[0016] Appendix Figure 3 This is a schematic diagram of the folded structure of this utility model. Detailed Implementation
[0017] As attached Figure 1-3 As shown, this utility model consists of a transport component and a flatbed vehicle 9. The transport component comprises a long straight track 1, a short straight track 2, a tail track 3, and a power mechanism 4.
[0018] The upper end face of the long straight track 1 is hinged to the upper end face of the short straight track 2, the lower end face of the short straight track 2 is hinged to the lower end face of the tail track 3, and an adjustable front limiter 10 is provided. The upper end face of the long straight track 1 is hinged to the upper end face of the power mechanism 4, and an adjustable rear limiter 11 is provided.
[0019] The long straight track 1, the short straight track 2, and the tail track 3 are equipped with mutually compatible flatbed transport tracks at their upper ends. A first drive wheel 6 is installed on the long straight track 1, and a second drive wheel 5 is installed on the short straight track 2. A pulley 7 is installed on the power mechanism 4, and handles are provided on both sides of the pulley 7.
[0020] The flatbed trolley 9 is equipped with pulleys at its lower end that are adapted to the flatbed trolley's transmission track. A belt fixing end is located at the front end of the flatbed trolley 9, and handles are located on both the front and rear ends of the flatbed trolley 9. A transmission belt 8 is installed between the belt fixing end and the pulley 7, and the transmission belt 8 is sequentially installed on the first transmission wheel 6 and the second transmission wheel 5. The first transmission wheel 6 is a one-way ratchet.
[0021] The flatbed trolley 9 is equipped with a seat belt, and the upper part of the flatbed trolley 9 is made of rubber.
[0022] This invention uses two foldable metal tracks, spaced 30cm apart, with two connecting pipes in between, each bearing for a drive belt. The front end of the tracks has a device for fixing them to the transport vehicle's cargo box, while the rear end has a device similar to bicycle pedals with a unidirectional ratchet to prevent the flatcar from reversing due to loss of power. A flatcar with pulleys glides along the tracks; the flatcar is made of rubber and has a safety belt to secure the injured person. Manually cranking the bicycle pedal-like device allows the injured person to be transported to the vehicle via a conveyor system.
Claims
1. A hand- operated casualty evacuation aid characterized in that It is composed of transport components and flat car (9), the transport components are long straight track (1), short straight track (2), tail track (3) and power mechanism (4), The upper end surface of long straight track (1) and short straight track (2) is hinged, the lower end surface of short straight track (2) and tail track (3) is hinged, and adjustable angle front end limiter (10) is arranged, the upper end surface of long straight track (1) and power mechanism (4) is hinged, and adjustable angle rear end limiter (11) is arranged; The upper end of long straight track (1), short straight track (2) and tail track (3) is provided with flat car transmission track matched with each other, first transmission wheel (6) is arranged on long straight track (1), second transmission wheel (5) is arranged on short straight track (2), belt pulley (7) is arranged on power mechanism (4), handle is arranged on both sides of belt pulley (7), The lower end of flat car (9) is provided with pulley matched with flat car transmission track, the front end of flat car (9) is provided with belt fixed end, handle is arranged on both sides of front end and rear end of flat car (9), transmission belt (8) is arranged between belt fixed end and belt pulley (7), transmission belt (8) is sequentially arranged on first transmission wheel (6) and second transmission wheel (5).
2. A hand operated casualty evacuation aid as claimed in claim 1, characterised in that First transmission wheel (6) is one-way ratchet wheel.
3. A hand operated casualty evacuation aid as claimed in claim 2, wherein Safety belt is arranged on flat car (9), and the upper end of flat car (9) is made of rubber material.