A simulated constant force loading device based on the load of ejected lifesaving human body

Abstract

This invention provides a simulated constant force loading device based on the load of a human body in an ejection rescue. The load simulation mechanism is fixed to a simulation mechanism frame, and a locking mechanism is installed at one end on the simulation mechanism frame and connected at the other end to the test ejection seat. The load simulation mechanism includes a state locking mechanism, a fixed frame, and a constant force loading device. The state locking mechanism is installed on the fixed frame and locks different positions of the locking frame in the constant force loading device through locking pins, thereby locking the overall state of the constant force loading device. The constant force loading device is set with a constant unlocking load. A connecting rope is installed on the load simulation mechanism, with one end connected to the constant force loading device and the other end connected to the loading fixing device. When the load reaches the set value, pulling the connecting rope drives the constant force loading device to rotate, achieving constant force unlocking output. This patent not only achieves constant force output of the load but also allows for settings according to the load size and different position requirements, with a simple structure and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of ejection rescue, specifically to a simulated constant force loading device based on the load on the human body during ejection rescue. Background Technology

[0002] Ejection seats are used to eject passengers from aircraft in emergency situations to protect pilot safety. During the development of ejection seats, simulated ejection and related functional tests are conducted. This involves simulating the reaction forces of the human body against different loads on the ejection seat's shoulder straps, lumbar belt, and leg-raising mechanism. Therefore, the effectiveness of the seat's function during ejection needs to be checked based on the simulation of the human body's reaction forces against the ejection seat's shoulder straps, lumbar belt, and leg-raising mechanism.

[0003] Currently, ejection seat tests use test dummies to simulate the reaction force of the human body. However, the reaction force and other properties of the dummy's limbs are affected by various factors, and quantitative indicators cannot be given when testing the shoulder straps, waist belt, and leg lifting mechanism of the ejection seat separately. Summary of the Invention

[0004] The purpose of this invention is to provide a simulated constant force loading device based on the load of a human body in an ejection rescue. It can not only quantitatively realize the constant force loading for the functional detection of the shoulder straps, waist belt and leg lifting mechanism of the ejection seat, but also be used for loading and holding of other equipment that require constant force output. It has a simple structure, is easy to operate, and can meet the requirement of unlocking function when a certain specified load is reached.

[0005] Invention technical solution: A simulated constant force loading device based on ejection rescue human body load, including a load simulation mechanism, a simulation mechanism frame, a locking mechanism, and a connecting rope. The load simulation mechanism is fixed on the simulation mechanism frame. One end of the locking mechanism is installed on the simulation mechanism frame, and the other end is connected to the ejection seat to be tested. The load simulation mechanism includes a state locking mechanism, a fixed frame, and a constant force loading device. The state locking mechanism is installed on the fixed frame and locks different positions of the locking frame in the constant force loading device through locking pins to achieve the overall state locking of the constant force loading device. The constant force loading device is set with a constant unlocking load. The connecting rope is set on the load simulation mechanism, with one end connected to the constant force loading device and the other end connected to the loading fixing device. When the load reaches the set value, the connecting rope is pulled to move, causing the constant force loading device to rotate, thereby achieving constant force unlocking output.

[0006] In the above scheme, the number of load simulation mechanisms is determined according to the number of ejection seats to be tested.

[0007] In the above scheme, the load simulation mechanism includes a shoulder belt load simulation mechanism, a waist belt load simulation mechanism, and a leg lifting load simulation mechanism, which are respectively fixed on the simulation mechanism frame to provide loading load for testing the ejection seat.

[0008] In the above scheme, the simulation mechanism frame is set with different appearance frame structure forms according to the requirements of the test piece, and is connected to the shoulder belt load simulation mechanism, waist belt load simulation mechanism and leg lifting load simulation mechanism respectively.

[0009] In the above scheme, the constant force loading device sets different release loads according to different unlocking load requirements. The constant force loading device includes a fixed rotating shaft, a rotating shaft, a locking frame, a shim, a limit block, a rotating pulley, and a pressing friction device. The rotating pulley is installed on the locking frame. The left side is connected to the shim and the limit block, and the right side is connected to the shim, the limit block, and the pressing friction device. The connecting rope pulls the rotating pulley. When the load reaches the set load, the rotating pulley unlocks under different loads.

[0010] In the above scheme, the state locking mechanism includes a locking shaft, a spring, a locking device, and a fixing bolt. The spring is sleeved on the locking shaft, the locking shaft is inserted into the locking device, and its end is fixed to the fixed frame by the fixing bolt. The length of the loading connecting rope is adjusted, and the outer frame of the constant force loading device is locked.

[0011] In the above scheme, one end of the connecting rope is fixed to the constant force loading device and can be wound on the rotating pulley. The other end is connected to the ejection seat shoulder strap, waist belt and leg lifting structure through the connecting joint to implement load simulation. When the connecting rope is loaded, the rotating pulley can be unlocked under different loads to achieve a constant force output of a specified magnitude.

[0012] In the above scheme, the connecting rope is wound around the rotating pulley with a suitable length reserved. The locking frame is locked by a state locking mechanism, thereby fixing the rotating pulley by a pressure friction device. When the connecting rope is subjected to the required external force, the rotating pulley will unlock and rotate.

[0013] In the above scheme, the clamping friction device adjusts the magnitude of the locking friction force to adjust the magnitude of the unlocking force, thus forming a constant force loading unlocking mechanism.

[0014] In the above scheme, the simulation mechanism frame is set with different appearance frame structure forms according to the requirements of the test piece; the locking mechanism is designed with different connection joints according to the different installation joints of the test piece.

[0015] The advantages and beneficial effects of this invention are as follows: This invention patent can quantitatively set the unlocking load size. According to actual needs, different unlocking loads can be set by setting different friction forces of the constant force loading device. At the same time, it can be combined according to different positions to achieve multiple positions and different loads. It has a simple structure, is easy to operate, and can meet the needs of different devices for adjusting different unlocking loads. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structural assembly of an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the load simulation mechanism of the shoulder strap / waist belt / leg lifting mechanism of the present invention.

[0019] Figure 3 This is a schematic diagram of the state locking mechanism of the present invention.

[0020] Figure 4 This is a schematic diagram of the constant force loading device of the present invention.

[0021] Among them, 1-shoulder belt load simulation mechanism, 2-waist belt load simulation mechanism, 3-leg lifting load simulation mechanism, 4-simulation mechanism frame, 5-locking mechanism, 6-connecting rope, 7-state locking mechanism, 8-fixed frame, 9-constant force loading device, 11-locking shaft, 12-spring, 13-locking device, 14-fixing bolt, 15(25)-fixed rotating shaft, 16-rotating shaft, 17-locking frame, 18-shield, 19-limiting block, 20-rotating pulley (21, 22, 23, 24)-pressing friction device. Detailed Implementation

[0022] To make the purpose, technical solution, and advantages of this invention patent clearer, the following detailed description of this invention patent is provided in conjunction with the accompanying drawings.

[0023] Figure 1 Among them, a constant force loading device for simulating the load on a human body during ejection rescue includes a shoulder belt load simulation mechanism 1, a waist belt load simulation mechanism 2, a leg lifting load simulation mechanism 3, a simulation mechanism frame 4, a locking mechanism 5, and a connecting rope 6.

[0024] The shoulder belt load simulation mechanism 1, waist belt load simulation mechanism 2, and leg lifting load simulation mechanism 3 are fixed on the simulation mechanism frame 4 according to their relative ejection seat positions.

[0025] The simulation mechanism frame 4 is fixed to the ejection seat to be tested via a locking mechanism 5. Different appearance and structural forms can be set according to different requirements of the ejection seat. The locking mechanism 5 can be designed with different connection joints according to different mounting joints of the test piece, with one end installed on the simulation mechanism frame 4 and the other end connected to the ejection seat to be tested.

[0026] One end of the connecting rope 6 is fixed to the constant force loading device 9 and can be wound on the rotating pulley 20. The other end is connected to the action mechanism of the ejection seat shoulder strap, waist belt, or leg lifting structure test piece through a connecting joint to implement load simulation.

[0027] Figure 2 In this system, the shoulder belt load simulation mechanism 1, waist belt load simulation mechanism 2, and leg lift load simulation mechanism 3 are all composed of a state locking mechanism 7, a fixed frame 8, and a constant force loading device 9. The constant force loading device 9 can be installed independently on other installation equipment for outputting a constant force load. The state locking mechanism 7 is fixed to one side of the fixed frame 8, and the constant force loading device 9 is located inside the fixed frame 8, with one end fixed to one side of the fixed frame 8 and the other end fixed to the other side of the fixed frame 8. In use, the state locking mechanism 7 fixes the rotation axis of the constant force loading device 9 through the fixed frame 8. The constant force loading device 9 is set with a constant unlocking load, and the connecting rope 6 is connected to the loading fixing equipment. When the load reaches the set value, it pulls the connecting rope 6, causing the constant force loading device 9 to rotate, thus achieving constant force unlocking output.

[0028] Figure 3 In the middle, the state locking mechanism 7 includes a locking shaft 11, a spring 12, a locking device 13 and a fixing bolt 14. The spring 12 is sleeved on the locking shaft 11, the locking shaft 11 is inserted into the locking device 13, and its end is fixed to the fixed frame 8 by the fixing bolt 14. Its function is to adjust the length of the loading connecting rope 6 and lock the outer frame of the constant force loading device 9.

[0029] Figure 4 In this system, the constant force loading device 9 consists of fixed rotating shafts 15 and 25, a rotating shaft 16, a locking frame 17, a shim 18, a limiting block 19, a rotating pulley 20, and pressing friction devices 21, 22, 23, and 24. The rotating pulley 20 is mounted on the locking frame 17, and is connected on the left side by the shim 18 and the limiting block 19, and on the right side by the shim 18, the limiting block 19, and the pressing friction devices 21, 22, 23, and 24. The magnitude of the locking friction force can be adjusted to adjust the unlocking force, forming a constant force loading and unlocking mechanism. The entire structure is then mounted on the fixed rotating shafts 15 and 25 via the rotating shaft 16, forming the complete constant force loading device 9.

[0030] The constant force loading device 9 can be set with different release loads according to different unlocking load requirements. During operation, the connecting rope 6 pulls the rotating pulley 20. When the load reaches the set load, the rotating pulley 20 starts to rotate, realizing unlocking under different loads.

[0031] In use, first connect the locking mechanism 5 to the ejection seat to fix the entire equipment relative to the seat. Then, connect the connecting ropes 6 on the shoulder belt load simulation mechanism 1, waist belt load simulation mechanism 2, and leg lift load simulation mechanism 3 to the shoulder belt mechanism, waist belt mechanism, and leg lift mechanism, respectively. Finally, wind the connecting ropes 6 around the rotating pulley 20. After leaving a suitable length, lock the locking frame 17 with the status locking mechanism 7, thereby fixing the rotating pulley 20 by pressing the friction devices 21, 22, 23, and 24. When the connecting ropes 6 are subjected to the required external force, the rotating pulley 20 will unlock and rotate, achieving a constant force output of the specified magnitude.

[0032] The simulation mechanism frame is used to fix the shoulder belt load simulation mechanism, waist belt load simulation mechanism, and leg lift load simulation mechanism according to different parts of the human body.

[0033] Before using this invention, the loads acting on the shoulder strap mechanism, waist belt mechanism, and leg lifting mechanism are first tested. Based on different load magnitudes, the locking force of the friction plate in the constant force loading device is set to meet different unlocking load requirements. This invention connects to the loading part and sets different unlocking loads to achieve constant force locking and constant force unlocking of the part. It can simulate the actual reverse loads on the shoulder strap, waist belt, and leg lifting during a human ejection process, and the unlocking loads are set according to different load requirements during use.

[0034] A constant force loading device is installed on the simulation mechanism frame, and then connected to the equipment to be tested. The simulation mechanism frame is fixed to the equipment via a locking mechanism. Depending on the load requirement, different load sizes can be unlocked by adjusting the locking force of the friction plates.

[0035] This invention patent not only achieves constant force output of the load, but also allows for settings based on the load size and different positional requirements. It has a simple structure, is easy to operate, and can meet the different load settings requirements for the reaction force of different parts of the human body on the equipment during simulated ejection.

[0036] This invention is not limited to the above-described embodiments. If any modifications or variations to this invention do not depart from the spirit and scope of this invention, and if such modifications or variations fall within the scope of the claims and equivalent technologies of this invention, then this invention also intends to include such modifications and variations.

Claims

1. A simulated constant force loading device based on the load of a human body in ejection rescue, comprising a load simulation mechanism, a simulation mechanism frame (4), a locking mechanism (5), and a connecting rope (6), characterized in that, The load simulation mechanism is fixed on the simulation mechanism frame (4). One end of the locking mechanism (5) is installed on the simulation mechanism frame (4), and the other end is connected to the ejection seat to be tested. The load simulation mechanism includes a state locking mechanism (7), a fixed frame (8), and a constant force loading device (9). The state locking mechanism (7) is installed on the fixed frame (8). The locking pin locks different positions of the locking frame (17) in the constant force loading device (9) to achieve the overall locking of the constant force loading device (9). The constant force loading device (9) is set with a constant unlocking load. The load simulation mechanism is equipped with a connecting rope (6). One end of the connecting rope (6) is connected to the constant force loading device (9), and the other end is connected to the loading fixing device. When the load reaches the set value, the connecting rope (6) is pulled to move, which drives the constant force loading device (9) to rotate and achieve constant force unlocking output.

2. The simulated constant force loading device based on the load of a ejected lifesaving human body according to claim 1, characterized in that, The number of load simulation mechanisms is determined based on the number of ejection seats to be tested.

3. The simulated constant force loading device based on the load of a ejected lifesaving human body according to claim 2, characterized in that, The load simulation mechanism includes a shoulder belt load simulation mechanism (1), a waist belt load simulation mechanism (2), and a leg lifting load simulation mechanism (3), which are fixed on the simulation mechanism frame (4) to provide loading load for the test ejection seat.

4. The simulated constant force loading device based on the load of a ejected lifesaving human body according to claim 3, characterized in that, The simulation mechanism frame (4) is set with different appearance frame structure forms according to the requirements of the test piece, and is connected to the shoulder belt load simulation mechanism (1), waist belt load simulation mechanism (2), and leg lifting load simulation mechanism (3) respectively.

5. The simulated constant force loading device based on the load of a human body in ejection rescue according to claim 1, characterized in that, The constant force loading device (9) sets different release loads according to different unlocking load requirements. The constant force loading device (9) includes a fixed rotating shaft (15, 25), a rotating shaft (16), a locking frame (17), a pad (18), a limit block (19), a rotating pulley (20), and a pressing friction device (21, 22, 23, 24). The rotating pulley (20) is installed on the locking frame (17). The left side is connected by the pad (18) and the limit block (19), and the right side is connected by the pad (18), the limit block (19), and the pressing friction device (21, 22, 23, 24). The connecting rope (6) pulls the rotating pulley (20). When the load reaches the set load, the rotating pulley (20) unlocks under different loads.

6. The simulated constant force loading device based on the load of a human body in ejection rescue according to claim 1, characterized in that, The state locking mechanism (7) includes a locking shaft (11), a spring (12), a locking device (13), and a fixing bolt (14). The spring (12) is sleeved on the locking shaft (11), the locking shaft (11) is inserted into the locking device (13), and its end is fixed to the fixed frame (8) by the fixing bolt (14). The length of the loading connecting rope (6) is adjusted, and the outer frame of the constant force loading device (9) is locked.

7. A simulated constant force loading device based on the load of a ejected lifesaving human body according to claim 5, characterized in that, One end of the connecting rope (6) is fixed to the constant force loading device (9) and can be wound around the rotating pulley (20). The other end is connected to the ejection seat shoulder strap, waist belt and leg lifting structure through the connecting joint to implement load simulation. When the connecting rope (6) applies a load, the rotating pulley (20) can be unlocked under different loads to achieve a constant force output of a specified magnitude.

8. A simulated constant force loading device based on the load of a human body in ejection rescue, as described in claim 7, is characterized in that, The connecting rope (6) is wound around the rotating pulley (20) with a suitable length reserved. The locking frame (17) is locked by the state locking mechanism (7), thereby fixing the rotating pulley (20) by the pressing friction device. When the connecting rope (6) is subjected to the required external force, the rotating pulley (20) will unlock and rotate.

9. A simulated constant force loading device based on the load of a human body in ejection rescue, as described in claim 5, is characterized in that, The clamping friction devices (21, 22, 23, 24) adjust the magnitude of the locking friction force and the unlocking force to form a constant force loading unlocking mechanism.

10. A simulated constant force loading device based on the load of a human body in ejection rescue according to claim 1, characterized in that, The simulation mechanism frame (4) is set with different appearance frame structure forms according to the requirements of the test piece; the locking mechanism (5) is designed with different connection joints according to the different installation joints of the test piece.

Images