Simulation dummy for parachute airborne test and adjusting seat

Abstract

The invention discloses a simulation dummy for a parachute airborne test and an adjusting seat. The dummy comprises a head assembly, a neck assembly, a shoulder assembly, a chest assembly, an arm assembly, a waist assembly and a leg assembly. The neck assembly comprises a cervical vertebra body, the cervical vertebra body comprises a plurality of neck supporting pieces, neck elastic pieces and neck ligaments, the neck supporting pieces are arranged at intervals in the vertical direction, the neck elastic pieces are arranged between every two adjacent neck supporting pieces respectively, and the neck ligaments are made of collagenous fibers. The multiple neck ligaments are arranged on the middle rear portion of the cervical vertebra body at intervals in the circumferential direction, all the neck ligaments are sequentially connected with all the neck supporting pieces from top to bottom, and all the neck ligaments are located on the outer sides of the neck elastic pieces; the front portion, the rear portion, the left side portion and the right side portion of each neck supporting piece protrude outwards to form protruding portions, and the neck ligaments are connected to the protruding portions of the neck supporting pieces. The dummy is closer to the real structure of a human body, and can truly reflect the neck condition of the human body in a parachute airborne test.

Description

Technical Field

[0001] The invention relates to the technical field of parachute airdrop, and in particular to a simulation dummy and an adjustment seat for a parachute airdrop test. Background Art

[0002] When evaluating the safety performance of a parachute, it is necessary to use a test dummy. The early parachute test dummies did not have simulated skin and were affected by the turbulence of the air on the dummy's surface, making the measurement results inaccurate and untrue. In addition, the pure steel structure dummies are quite different from the human body structure. Most of the dummies currently used in parachute airborne tests do not have head, neck, or limb structures, so it is impossible to complete the impact force test on the pilot's lower limbs and head and neck when the ground is landing. Although a small number of dummies have head, neck, and limb structures, the dummy's neck is quite different from the real human neck structure and cannot truly reflect the damage to the human neck in the parachute airborne test. Summary of the invention

[0003] The purpose of the present invention is to provide a simulation dummy for parachute airborne test which is closer to the real structure of human body in view of the deficiencies in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A simulation dummy for parachute airborne test, comprising a head assembly, a neck assembly, a shoulder assembly, a chest assembly, an arm assembly, a waist assembly and a leg assembly; one end of the neck assembly is rotatably connected to the head assembly, and the other end is fixedly connected to the shoulder assembly; one end of the chest assembly is fixedly connected to the shoulder assembly, and the other end is fixedly connected to the waist assembly; one end of the arm assembly is rotatably connected to the shoulder assembly, and one end of the leg assembly is rotatably connected to the waist assembly;

[0006] The neck assembly includes a cervical vertebra body, the cervical vertebra body includes a neck support, a neck elastic member and a neck ligament, the neck support is arranged in a plurality of intervals along the up-down direction, the neck elastic member is respectively arranged in the interval area between each two adjacent neck support members, the neck ligament is made of collagen fiber, the neck ligament is arranged in a plurality of intervals along the circumferential direction in the middle and rear part of the cervical vertebra body, each of the neck ligaments is sequentially connected to each of the neck support members from top to bottom, and each of the neck ligaments is located on the outside of the neck elastic member;

[0007] The front, rear, left and right parts of each of the neck supports are convex outward to form convex parts, and the neck ligament is connected at the convex part position of each of the neck supports.

[0008] In some embodiments, the neck assembly further comprises:

[0009] A neck connector, fixedly connected to the neck support member located at the uppermost portion, and rotatably connected to the head assembly via a first rotating shaft;

[0010] A neck fixing seat, fixedly connected to the neck support member located at the bottom, and fixedly connected to the shoulder assembly;

[0011] A neck steel cable, one end of which is connected to the neck connector and passes through the center of each of the neck supporting members and each of the neck elastic members, and the other end of which is connected to the neck fixing seat, and the connection position of at least one of the connection structures at both ends of the neck steel cable is adjustable to adjust the tension of the cervical vertebra body;

[0012] The neck pad is elastic and is arranged on the neck connector and respectively arranged on the front and rear sides of the first rotating shaft. The neck pad on each side is provided with an inclined surface inclined from top to bottom away from the first rotating shaft.

[0013] In some embodiments, the chest assembly comprises:

[0014] The thoracic cavity has a receiving cavity for receiving a data acquisition device;

[0015] Ribs are fixedly arranged at the rear of the thorax, and a plurality of ribs are arranged at intervals in the vertical direction, and each rib forms a closed frame structure after being connected to the thorax;

[0016] A rib connecting plate, fixedly connected to the rear portion of each rib in sequence from top to bottom;

[0017] A thoracic vertebra body is disposed in each of the closed frame structures and is fixedly connected to the thoracic cavity and the rib connecting plate, respectively; the upper portion of the thoracic vertebra body is fixedly connected to the shoulder assembly, and the lower portion of the thoracic vertebra body is fixedly connected to the waist assembly;

[0018] Chest skin covers the outside of the chest cavity and the ribs.

[0019] In some embodiments, the waist assembly includes a lumbar vertebra fixedly connected to the chest assembly, a pelvis connected to the leg assembly, a lumbar vertebra sensor disposed between the lumbar vertebra and the pelvis, and a buttocks skin wrapped around the outside of the pelvis;

[0020] The lumbar spine includes:

[0021] The lumbar vertebra body comprises a lumbar vertebra upper connecting plate, a lumbar vertebra elastic member and a lumbar vertebra lower connecting plate which are arranged in sequence from top to bottom;

[0022] A thoracic vertebra fixation plate is located above the lumbar vertebra upper connecting plate and is fixedly connected to the lumbar vertebra upper connecting plate. The thoracic vertebra fixation plate is fixedly connected to the chest assembly;

[0023] A lumbar vertebrae fixation plate is located below the lumbar vertebrae lower connection plate and is fixedly connected to the lumbar vertebrae lower connection plate, and the lumbar vertebrae sensor is fixedly connected below the lumbar vertebrae fixation plate;

[0024] A waist steel cable, one end of which is connected to the thoracic vertebrae fixation plate and passes through the center of the lumbar vertebrae upper connection plate, the lumbar vertebrae elastic member and the lumbar vertebrae lower connection plate, and the other end of which is connected to the lumbar vertebrae fixation plate, and the connection position of at least one end of the connection structure of the two ends of the waist steel cable is adjustable to adjust the tension of the lumbar vertebrae;

[0025] The pelvis has a hollow cavity, a speed sensor and a posture sensor are arranged in the central control cavity of the pelvis, and connecting parts connected to the leg assembly are arranged on the left and right sides of the pelvis.

[0026] In some embodiments, the shoulder assembly includes a shoulder bracket and shoulder joints rotatably connected to the left and right ends of the shoulder bracket, respectively, the shoulder joint is rotatably connected to the arm assembly, and the axis of the rotational connection between the shoulder joint and the shoulder bracket and the axis of the rotational connection between the shoulder joint and the arm assembly are perpendicular;

[0027] A first limiting structure for limiting the relative rotation angle between the shoulder joint and the shoulder support is also provided between the shoulder joint and the shoulder support.

[0028] In some embodiments, the arm assembly includes arm bones and arm skin covering the outside of the arm bones, the arm bones include an upper arm bone having one end rotationally connected to the shoulder assembly, a forearm bone having one end rotationally connected to the other end of the upper arm bone, and a metacarpal bone rotationally connected to the other end of the forearm bone, a first damping structure is provided at the rotational connection between the upper arm bone and the shoulder assembly, and a second limiting structure for limiting the relative rotation angle between the two is provided at the rotational connection between the upper arm bone and the forearm bone.

[0029] In some embodiments, the leg assembly includes a leg bone and a leg skin covering the outside of the leg bone;

[0030] The leg bones include a femur, a knee joint, a shin bone, an ankle joint and a foot; one end of the femur is rotatably connected to the waist assembly via a ball joint, and the other end of the femur is fixedly connected to the knee joint; one end of the shin bone is rotatably connected to the knee joint, and the other end of the shin bone is rotatably connected to the ankle joint via a ball joint; the foot is fixedly connected to the ankle joint; a second damping structure is provided at a rotational connection between the femur and the waist assembly, and a third limiting structure for limiting a relative rotation angle between the shin bone and the knee joint is provided at a rotational connection between the shin bone and the knee joint;

[0031] The leg assembly also includes a force sensor disposed on the leg bone.

[0032] In some embodiments, the head assembly includes a head skeleton, on which an acceleration sensor and an air pressure sensor are disposed, and the head component also includes head skin covering the outside of the head skeleton.

[0033] In some embodiments, the dummy further includes a plurality of sensors disposed inside the dummy, a data acquisition device is disposed in the chest assembly, and each of the sensors is electrically connected to the data acquisition device.

[0034] The present invention also provides an adjustable seat for a simulation dummy for parachute airborne test as described in any one of the above items, comprising a seat body, the seat body comprising a seat plate for supporting the dummy's buttocks, the adjustable seat further comprising a support plate whose rear end is rotatably connected to the front end of the seat plate and a support mechanism supported at the bottom of the support plate for adjusting the angle between the support plate and the seat plate, one end of the support mechanism being rotatably connected to the seat body, and the other end being rotatably and slidably arranged on the support plate;

[0035] The seat plate is arranged to be inclined from rear to front and from top to bottom.

[0036] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the simulated dummy for parachute airborne test of the present invention has a head, neck and limbs structure, which can test the impact force of the ground on the pilot's lower limbs and head and neck when landing. After the air pressure sensor is set on the head assembly, the air pressure on the head during the parachute landing can also be tested. The measurement of the air pressure value can provide a basis for the design of protective equipment such as helmets and masks carried by paratroopers. Moreover, the structural form of the dummy's neck support and the setting of the neck ligament make the structure of the dummy's cervical spine body closer to the real neck structure of the human body, so that the dummy can truly reflect the damage to the human neck in the parachute airborne test. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Attached Figure 1This is one of the three-dimensional schematic diagrams of the parachute airborne test simulation dummy of this embodiment after removing some structures (the dummy is in a sitting position);

[0038] Attached Figure 2 The second three-dimensional schematic diagram of the parachute airborne test simulation dummy of this embodiment after removing some structures (the dummy is in a sitting position);

[0039] Attached Figure 3 This is an exploded schematic diagram of the head assembly of a simulation dummy for a parachute airborne test of this embodiment (without the head skin);

[0040] Attached Figure 4 It is a three-dimensional schematic diagram of the neck assembly of a simulation dummy for a parachute airborne test of this embodiment;

[0041] Attached Figure 5 This is an exploded schematic diagram of the neck assembly of a simulation dummy for a parachute airborne test of this embodiment;

[0042] Attached Figure 6 It is a three-dimensional schematic diagram of the shoulder assembly of a simulation dummy for a parachute airborne test of this embodiment;

[0043] Attached Figure 7 This is a three-dimensional schematic diagram of the chest assembly of a simulation dummy for a parachute airborne test of this embodiment (without the chest skin);

[0044] Attached Figure 8 This is an exploded schematic diagram of the arm assembly of a simulation dummy for a parachute airborne test of this embodiment (without the arm skin);

[0045] Attached Fig. 9 This is an exploded schematic diagram of the waist assembly of the parachute airborne test simulation dummy of this embodiment (without the buttocks skin);

[0046] Attached Fig.10 This is an exploded schematic diagram of the lumbar spine of a simulated dummy for a parachute airborne test in this embodiment;

[0047] Attached Fig.11 This is an exploded schematic diagram of the pelvic area of ​​a simulation dummy for a parachute airborne test of this embodiment;

[0048] Attached Fig.12 This is an exploded schematic diagram of the leg assembly of a simulation dummy for a parachute airborne test of this embodiment (without the leg skin);

[0049] Attached Fig.13 is a three-dimensional schematic diagram of an adjustment seat of this embodiment;

[0050] Attached Fig.14 It is a three-dimensional schematic diagram of the dummy of this embodiment when maintaining an airborne posture on the adjustment seat.

[0051] Among them: 1. Head assembly; 11. Facial bones; 12. Back bones of the head; 13. Head skin; 14. Neck sensor; 15. Air pressure sensor;

[0052] 2. Neck assembly; 21. Neck support; 211. First convex portion; 212. Second convex portion; 213. Third convex portion; 22. Neck elastic member; 23. Neck ligament; 24. Neck connector; 25. Neck fixing seat; 26. Neck steel cable; 27. Neck pad; 271. Inclined surface; 28. First rotating shaft;

[0053] 3. Shoulder assembly; 31. Shoulder bracket; 311. Front bracket; 312. Rear bracket; 313. Side bracket; 314. Connecting plate; 315. Fourth protrusion; 32. Shoulder joint; 321. Fifth protrusion; 33. Second rotating shaft; 34. Third rotating shaft;

[0054] 4. chest assembly; 41 chest cavity; 411 base; 412 cover; 42 ribs; 43 rib connecting plate; 44 thoracic vertebrae body; 45 chest skin;

[0055] 5. Arm assembly; 51 upper arm bones; 52. lower arm bones; 53. metacarpal bones; 54. arm skin;

[0056] 6. Waist assembly; 61. Lumbar vertebra; 611. Lumbar vertebra upper connecting plate; 612. Lumbar vertebra elastic member; 613. Lumbar vertebra lower connecting plate; 614. Thoracic vertebra fixing plate; 615. Lumbar vertebra fixing plate; 616. Waist steel cable; 62. Pelvis; 621. Hollow cavity; 622. Connecting part; 63. Lumbar vertebra sensor; 64. Buttocks skin; 65. Sensor fixing plate;

[0057] 7. Leg assembly; 71. Femoral bone; 72. Knee joint; 73. Calf bone; 74. Ankle joint; 75. Foot; 76. Leg skin;

[0058] 81. Seat body; 811. Seat plate; 82. Support plate; 83. Support mechanism. DETAILED DESCRIPTION

[0059] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] In the following description, the directions such as "front", "back", "left", "right", "up", and "down" involved are all based on the human body. The direction of the human face is "front", the direction of the back of the head is "back", the upper direction is "up", the lower direction is "down", and the left and right sides of the body are "left" and "right" respectively. The definitions of the above directions are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0061] like Figure 1 and Figure 2 As shown, the simulation dummy for parachute airborne test of the present invention comprises a head assembly 1, a neck assembly 2, a shoulder assembly 3, a chest assembly 4, an arm assembly 5, a waist assembly 6 and a leg assembly 7.

[0062] like Figure 3 As shown, the head assembly 1 includes a head skeleton and a head skin 13, and the head skin 13 is wrapped around the outside of the head skeleton.

[0063] In this embodiment, if Figure 3 As shown, the head skeleton includes a facial skeleton 11 and a posterior skull skeleton 12. The facial skeleton 11 has a hollow cavity, and the rear of the hollow cavity is open. The posterior skull skeleton 12 is fixedly connected to the rear of the hollow cavity of the facial skeleton 11 to block the rear of the hollow cavity of the facial skeleton 11.

[0064] The head assembly 1 also includes a counterweight (not shown) disposed in the hollow cavity of the facial skeleton 11, and the counterweight is used to adjust the weight and center of gravity of the head assembly 1 to meet the test requirements. The position, material and structural volume of the counterweight can be adjusted according to the test requirements.

[0065] The head assembly 1 also includes a neck sensor 14, which is fixedly disposed in the hollow cavity of the facial bones 11 and is rotatably connected to the neck assembly 2. The neck sensor 14 is an acceleration sensor, which is used to measure the damage to the upper part of the neck during parachuting.

[0066] The head assembly 1 also includes an air pressure sensor 15, which is fixedly mounted on the facial bones 11 and is used to measure the head air pressure during parachuting. The measurement of the air pressure value can provide a basis for the design of protective equipment such as helmets and masks worn by paratroopers.

[0067] The head assembly 1 may also include a head sensor (not shown in the figure), which may be arranged on the facial bones 11 or on the neck sensor 14. The head sensor is an acceleration sensor, which is used to measure the damage to the head during parachuting.

[0068] like Figure 4 and Figure 5 As shown, the neck assembly 2 includes a cervical vertebrae body, a neck connector 24 , a neck fixing seat 25 , a neck steel cable 26 and a neck pad 27 .

[0069] The cervical vertebra body includes a neck supporting member 21 , a neck elastic member 22 and a neck ligament 23 .

[0070] A plurality of neck support members 21 are arranged at intervals in the vertical direction, and the neck elastic members 22 are respectively arranged in the interval area between each two adjacent neck support members 21. The neck support member 21 is made of metal material, and the front, rear, left and right parts of each neck support member 21 are convex outward to form convex parts. The convex parts are respectively a first convex part 211 located at the front, a second convex part 212 located at the rear, and a third convex part 213 located at the left and right parts respectively, and the first convex part 211, the second convex part 212 and the third convex part 213 have different curvature radii.

[0071] The neck elastic member 22 is made of rubber material and plays a role in buffering and absorbing energy.

[0072] The cervical ligament 23 is made of collagen fiber and is used to simulate the force and deformation of human ligaments. A plurality of cervical ligaments 23 are arranged at intervals along the circumference in the middle and rear part of the cervical vertebra body, and each cervical ligament 23 is sequentially connected to each cervical support member 21 from top to bottom, and each cervical ligament 23 is located on the outside of the cervical elastic member 22.

[0073] Preferably, the neck ligament 23 is connected to the convex portion of each neck support member 21. In this embodiment, three neck ligaments 23 are provided, which are respectively connected to the second convex portion 212 and the third convex portions 213 on the left and right sides.

[0074] After the cervical vertebra main body structure is arranged in this way, the structure of the formed cervical vertebra main body is closer to the real neck structure of the human body.

[0075] The neck connecting member 24 is fixedly connected to the neck supporting member 21 located at the uppermost portion, and is rotationally connected to the neck sensor 14 via a first rotating shaft 28 .

[0076] The neck fixing seat 25 is fixedly connected to the neck supporting member 21 located at the bottom, and is also fixedly connected to the shoulder assembly 3 .

[0077] One end of the neck steel cable 26 is connected to the neck connector 24, and the neck steel cable 26 sequentially passes through the center of each neck support 21 and the neck elastic member 22, and the other end is connected to the neck fixing seat 25, and at least one of the connection structures at the two ends of the neck steel cable 26 is adjustable. In this embodiment, the lower end of the neck steel cable 26 is provided with a thread, so that its connection on the neck fixing seat 25 is adjustable, so that the tension of the cervical vertebra body can be adjusted according to different test conditions. In addition to providing the neck with an adjustable pitch force, the neck steel cable 26 can also ensure the safety of the head-neck connection.

[0078] The neck pad 27 is elastic and can be made of rubber material. The neck pad 27 is arranged on the neck connector 24 and is respectively arranged on the front and rear sides of the first rotating shaft 28. The neck pad 27 on each side is provided with an inclined surface 271 inclined from top to bottom away from the first rotating shaft 28. The neck pad 27 is used to support the front and rear ends of the neck sensor 14, and can maintain the stability of the head while ensuring that the head has a certain degree of mobility.

[0079] like Figure 6 As shown, the shoulder assembly 3 includes a shoulder bracket 31 and a shoulder joint 32. The shoulder joint 32 is rotatably connected to the left and right ends of the shoulder bracket 31 through a second rotating shaft 33, and the shoulder joint 32 is rotatably connected to the arm assembly 5 through a third rotating shaft 34. The second rotating shaft 33 extends in the left-right direction, and the third rotating shaft 34 extends in the front-back direction. Preferably, the extension direction of the second rotating shaft 33 is perpendicular to the extension direction of the third rotating shaft 34. The neck fixing seat 25 and the chest assembly 4 are both fixedly connected to the shoulder bracket 31.

[0080] In this embodiment, the shoulder bracket 31 includes a front bracket 311, a rear bracket 312 and side brackets 313 respectively arranged on the left and right sides. The adjacent ends of the front bracket 311, the rear bracket 312 and the side brackets 313 on the left and right sides are fixedly connected or integrally arranged, so that the shoulder bracket 31 forms a closed frame structure, thereby making the structural stability of the shoulder assembly 3 better. The shoulder joint 32 is rotatably connected to the middle of the side bracket 313.

[0081] A connecting plate 314 is fixedly provided on the rear support 312 , and the lower part of the neck fixing seat 25 is fixedly connected to the connecting plate 314 .

[0082] A first limiting structure for limiting the relative rotation angle between the shoulder joint 32 and the shoulder support 31 is also provided between the two. In this embodiment, the first limiting structure includes a fourth protrusion 315 provided on the shoulder support 31 and a fifth protrusion 321 provided on the shoulder joint 32. When the shoulder joint 32 rotates a certain angle relative to the shoulder support 31 around the second rotation axis 33, the fourth protrusion 315 can be abutted against the fifth protrusion 321, thereby limiting the rotation angle of the shoulder joint 32. The setting of the first limiting structure needs to meet the normal range of human shoulder joint extension and abduction and lifting activities.

[0083] like Figure 7 As shown, the chest assembly 4 includes a chest cavity 41 , ribs 42 , rib connecting plates 43 , a thoracic vertebra body 44 and a chest skin 45 .

[0084] The chest cavity 41 has a receiving cavity, and the receiving cavity is used to place a data acquisition device, and the data acquisition device is used for real-time data acquisition during the test. A chest displacement sensor and an acceleration sensor can also be installed in the receiving cavity to test the chest displacement and chest injury during the test. The chest cavity 41 includes a base 411 with a receiving cavity, and the top of the base 411 is provided with an opening connected to the receiving cavity, so as to facilitate the placement of the data acquisition device into the receiving cavity from the opening. The chest cavity 41 also includes a cover body 412 arranged at the opening of the base 411, and the cover body 412 can be rotatably connected to the base 411 or detachably connected. The cover body 412 can block the top of the receiving cavity, and can also leave the top of the receiving cavity open.

[0085] The ribs 42 are located at the rear of the chest cavity 41 . A plurality of ribs 42 are spaced apart in the up-and-down direction. The front of each rib 42 is fixedly connected to the rear of the base 411 . After each rib 42 is connected to the base 411 , a closed frame structure is formed.

[0086] The rib connecting plate 43 is fixedly connected to the rear portion of each rib 42 in sequence from top to bottom.

[0087] The thoracic vertebra body 44 is arranged in a closed frame structure formed by each rib 42 and the base 411. The front part of the thoracic vertebra body 44 is fixedly connected to the rear part of the base 411, the rear part of the thoracic vertebra body 44 is fixedly connected to the rib connecting plate 43, the upper part of the thoracic vertebra body 44 is fixedly connected to the connecting plate 314 and the rear support 312 respectively, and the lower part of the thoracic vertebra body 44 is fixedly connected to the waist assembly 6.

[0088] The chest skin 45 is wrapped around the outside of the chest cavity 41 and the ribs 42. The upper end of the chest skin 45 extends to the lower edge of the neck assembly 2. A zipper structure is designed on the back side of the chest skin 45 to facilitate the removal of the chest skin 45.

[0089] like Figure 8As shown, the arm assembly 5 includes arm bones, and the arm bones 5 include an upper arm bone 51, a lower arm bone 52, and a metacarpal bone 53. One end of the upper arm bone 51 is rotationally connected to the shoulder joint 32 via the third shaft 34, the other end of the upper arm bone 51 is rotationally connected to one end of the lower arm bone 52, and the other end of the lower arm bone 52 is rotationally connected to the metacarpal bone 53.

[0090] A first damping structure is provided at the rotational connection between the upper arm bone 51 and the shoulder joint 32. The first damping structure is provided so that the upper arm bone 51 can be maintained at a certain angle with the shoulder joint 32, such as maintaining a set angle between the upper arm bone 51 and the shoulder joint 32 during an airborne test. The first damping structure can adopt a structure in the prior art, such as the first damping structure adopts an adjusting screw.

[0091] A second limiting structure is provided at the rotational connection between the upper arm bone 51 and the forearm bone 52 for limiting the relative rotation angle between the two. The second limiting structure limits the relative rotation angle between the upper arm bone 51 and the forearm bone 52 to be consistent with the range of motion of the human elbow joint.

[0092] The arm assembly 5 also includes arm skin 54 covering the outside of the arm bones.

[0093] like Fig. 9 As shown, the waist assembly 6 includes a lumbar vertebra 61, a pelvis 62, a lumbar sensor 63 and a buttocks skin 64. The lumbar vertebra 61 is fixedly connected to the chest assembly 4, the pelvis 62 is connected to the leg assembly 7, the lumbar sensor 63 is arranged between the lumbar vertebra 61 and the pelvis 62, and the buttocks skin 64 is wrapped around the outside of the pelvis 62.

[0094] like Fig.10 As shown, the lumbar spine includes a lumbar spine body, a thoracic spine fixation plate 614 , a lumbar spine fixation plate 615 and a lumbar steel cable 616 .

[0095] The lumbar body includes an upper lumbar connecting plate 611, a lumbar elastic member 612 and a lower lumbar connecting plate 613 arranged sequentially from top to bottom. The lumbar elastic member 612 is made of rubber material, which has a certain buffering capacity and is closer to the real human body structure, so that the test results are more accurate and true.

[0096] In this embodiment, the lumbar upper connecting plate 611, the lumbar elastic member 612 and the lumbar lower connecting plate 613 are formed into an integral structure by molding.

[0097] The thoracic vertebra fixing plate 614 is located above the lumbar vertebra upper connecting plate 611 and is fixedly connected to the lumbar vertebra upper connecting plate 611 . The thoracic vertebra fixing plate 614 is also fixedly connected to the lower part of the thoracic vertebra body 44 .

[0098] The lumbar vertebra fixing plate 615 is located below the lumbar vertebra lower connecting plate 613 and is fixedly connected to the lumbar vertebra lower connecting plate 613. The lumbar vertebra sensor 63 is disposed below the lumbar vertebra fixing plate 615 and is fixedly connected to the lumbar vertebra fixing plate 615.

[0099] One end of the waist cable 616 is connected to the thoracic vertebrae fixation plate 614, and the waist cable 616 sequentially passes through the center of the lumbar vertebrae upper connection plate 611, the lumbar vertebrae elastic member 612, and the lumbar vertebrae lower connection plate 613, and the other end is connected to the lumbar vertebrae fixation plate 615, and the connection position of at least one end of the connection structure at both ends of the waist cable 616 is adjustable. In this embodiment, the upper end of the waist cable 616 is provided with a thread, so that its connection on the thoracic vertebrae fixation plate 614 is adjustable, so that the tension of the lumbar vertebrae can be adjusted according to different test conditions.

[0100] In this embodiment, the lumbar sensor 63 is located below the lumbar vertebra 61 and is fixedly connected to the lumbar vertebra 61. The waist assembly 6 further includes a sensor fixing plate 65, to which the lumbar sensor 63 is fixedly connected, and the sensor fixing plate 65 is fixedly connected to the pelvis 62.

[0101] like Fig.10 As shown, the pelvis 62 has a hollow cavity 621, in which a velocity sensor and an attitude sensor are arranged. The attitude sensor is used to measure the change of the dummy's attitude during the test and obtain data, thereby providing a basis for improving the overload measurement data interpretation standard and the overload measurement method in the airdrop test. The velocity sensor and the attitude sensor are both arranged close to the center of the pelvis 62 in the left and right direction, so that the installation position of the velocity sensor and the attitude sensor is closer to the center of gravity of the dummy, so that the measurement result is closer to the actual situation.

[0102] The left and right sides of the pelvis 62 are provided with connecting parts 622, and the leg components 7 are connected to the connecting parts 622. In this embodiment, the connecting parts 622 are arranged on the left and right sides of the pelvis 62, so that the dummy can be in a standing state or a sitting state.

[0103] The leg assemblies 7 are arranged on the left and right sides respectively, and the leg assemblies 7 on each side include leg bones, and the leg bones include a femur 71, a knee joint 72, a shin bone 73, an ankle joint 74 and a foot 75. Fig.11 shown.

[0104] One end of the femur 71 is rotatably connected to the connection portion 622 via a ball joint, and the other end of the femur 71 is fixedly connected to the knee joint 72 .

[0105] One end of the tibia 73 is rotatably connected to the knee joint 72, and the other end of the tibia 73 is rotatably connected to the ankle joint 74 via a ball joint.

[0106] The foot 75 is fixedly connected to the ankle joint 74 .

[0107] A second damping structure is provided at the rotational connection between the femur 71 and the pelvis 62. The second damping structure is provided so that the leg assembly 7 can be maintained at a certain angle with the waist assembly 6, such as maintaining a set angle between the leg assembly 7 and the horizontal plane during an airborne test. Specifically, when the femur 71 is lifted to an angle of 30 degrees with the horizontal plane with the knee joint 72 as the force point in a sitting position, the torque is not greater than 95Nm, and the limit stroke can ensure that the femur 71 can be lifted to an angle of 40 degrees with the horizontal plane. The second damping structure can adopt a structure in the prior art, such as the second damping structure adopts a damping friction plate provided at the rotational connection between the femur 71 and the pelvis 62.

[0108] A third limiting structure is also provided at the rotational connection between the femur 71 and the pelvis 62, and the rotational angle of the femur 71 is limited by the third limiting structure to be consistent with the range of motion of the human hip joint.

[0109] A fourth limiting structure for limiting the relative rotation angle between the tibia 73 and the knee joint 72 is provided at the rotation connection between the tibia 73 and the knee joint 72. The fourth limiting structure limits the rotation angle of the knee joint 72 to be consistent with the range of motion of the human knee joint.

[0110] The leg assembly 7 also includes a force sensor disposed on the leg bone. In this embodiment, the force sensor is disposed on the calf bone 73. The force sensor is used to measure the impact force of the leg when landing.

[0111] The leg assembly 7 also includes a leg skin 76 covering the outside of the leg bones.

[0112] The sensors inside the dummy, specifically the neck sensor 14, air pressure sensor 15 and head sensor located in the head assembly 1, the chest displacement sensor and acceleration sensor located in the chest assembly 4, the lumbar sensor 63, velocity sensor and posture sensor located in the waist assembly 6, and the force sensor located in the leg assembly 7, are all electrically connected to the data acquisition device set in the chest cavity 41 to receive data information from each sensor. The data acquisition device is a storage type, and no external computer is required during the test process, thereby facilitating the conduct of the airborne test.

[0113] In summary, the simulation dummy has movable joints similar to those of a real person, and the damping of each joint is adjustable, and the specific postures of the dummy such as curling up, stretching, standing, sitting, etc. can be adjusted according to the test requirements. In the sitting position, the human body belt mainly transmits pressure to the buttocks muscles, and the force direction is consistent with the shoulder strap tension. Therefore, the buttocks muscles can play a buffering role. Therefore, the body of the parachutist is in a sitting position when leaving the plane, and the adjustment of the sitting position is more critical. Based on this, the invention also provides an adjustment seat to adjust the dummy's posture to a sitting position during the test.

[0114] like Fig.13 As shown, the adjustable seat includes a seat body 81, and the seat body 81 is used to support the main weight of the dummy. The seat body 81 includes a seat plate 811 for supporting the buttocks of the dummy. The adjustable seat also includes a support plate 82 arranged in front of the seat plate 811, and the rear end of the support plate 82 is rotatably connected to the front end of the seat plate 811. When the dummy is in a sitting state, the support plate 82 supports the part below the knee joint 72 of the dummy. By rotating the support plate 82 relative to the seat plate 811, the angle between the seat plate 811 and the support plate 82 can be adjusted, and then the angle between the femur 71 and the shin bone 73 of the dummy can be adjusted, so that the dummy is in a correct sitting state during the test.

[0115] The adjustable seat further includes a support mechanism 83, which is supported at the bottom of the support plate 82 and is used to adjust the angle between the support plate 82 and the seat plate 811. One end of the support mechanism 83 is rotatably connected to the seat body 81, and the other end is rotatably and slidably arranged at the bottom of the support plate 82. The support mechanism 83 can adopt a structure in the prior art.

[0116] The seat adjustment also includes a locking mechanism. Before the test, the support plate 82 is adjusted to the set position by the support mechanism 83, and the locking mechanism is locked. The relative position between the support plate 82 and the seat plate 811 is fixed, and the dummy posture can be maintained. Fig.14 shown.

[0117] The seat plate 811 is tilted from the back to the front and from the top to the bottom, so that it is easier for the dummy to slide out of the seat plate 811 during an airborne test.

[0118] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A simulation dummy for parachute airborne test, characterized in that: It includes a head assembly, a neck assembly, a shoulder assembly, a chest assembly, an arm assembly, a waist assembly and a leg assembly; one end of the neck assembly is rotatably connected to the head assembly, and the other end is fixedly connected to the shoulder assembly; one end of the chest assembly is fixedly connected to the shoulder assembly, and the other end is fixedly connected to the waist assembly; one end of the arm assembly is rotatably connected to the shoulder assembly, and one end of the leg assembly is rotatably connected to the waist assembly; The neck assembly includes a cervical vertebra body, the cervical vertebra body includes a neck support, a neck elastic member and a neck ligament, the neck support is arranged in a plurality of intervals along the up-down direction, the neck elastic member is respectively arranged in the interval area between each two adjacent neck support members, the neck ligament is made of collagen fiber, the neck ligament is arranged in a plurality of intervals along the circumferential direction in the middle and rear part of the cervical vertebra body, each of the neck ligaments is sequentially connected to each of the neck support members from top to bottom, and each of the neck ligaments is located on the outside of the neck elastic member; The front, rear, left and right parts of each of the neck supports are convex outward to form convex parts, and the neck ligament is connected at the convex part position of each of the neck supports.

2. The parachute airborne test simulation dummy according to claim 1, characterized in that: The neck assembly also includes: A neck connector, fixedly connected to the neck support member located at the uppermost portion, and rotatably connected to the head assembly via a first rotating shaft; A neck fixing seat, fixedly connected to the neck support member located at the bottom, and fixedly connected to the shoulder assembly; A neck steel cable, one end of which is connected to the neck connector and passes through the center of each of the neck supporting members and each of the neck elastic members, and the other end of which is connected to the neck fixing seat, and the connection position of at least one of the connection structures at both ends of the neck steel cable is adjustable to adjust the tension of the cervical vertebra body; The neck pad is elastic and is arranged on the neck connector and respectively arranged on the front and rear sides of the first rotating shaft. The neck pad on each side is provided with an inclined surface inclined from top to bottom away from the first rotating shaft.

3. The simulation dummy for parachute airborne test according to claim 1, characterized in that: The chest assembly comprises: The thoracic cavity has a receiving cavity for receiving a data acquisition device; Ribs are fixedly arranged at the rear of the thorax, and a plurality of ribs are arranged at intervals in the vertical direction, and each rib forms a closed frame structure after being connected to the thorax; A rib connecting plate, fixedly connected to the rear portion of each rib in sequence from top to bottom; A thoracic vertebra body is disposed in each of the closed frame structures and is fixedly connected to the thoracic cavity and the rib connecting plate, respectively; the upper portion of the thoracic vertebra body is fixedly connected to the shoulder assembly, and the lower portion of the thoracic vertebra body is fixedly connected to the waist assembly; Chest skin covers the outside of the chest cavity and the ribs.

4. The simulation dummy for parachute airborne test according to claim 1, characterized in that: The waist assembly includes a lumbar vertebra fixedly connected to the chest assembly, a pelvis connected to the leg assembly, a lumbar vertebra sensor disposed between the lumbar vertebra and the pelvis, and a buttocks skin wrapped around the outside of the pelvis; The lumbar spine includes: The lumbar vertebra body comprises a lumbar vertebra upper connecting plate, a lumbar vertebra elastic member and a lumbar vertebra lower connecting plate which are arranged in sequence from top to bottom; A thoracic vertebra fixation plate is located above the lumbar vertebra upper connecting plate and is fixedly connected to the lumbar vertebra upper connecting plate. The thoracic vertebra fixation plate is fixedly connected to the chest assembly; A lumbar vertebrae fixation plate is located below the lumbar vertebrae lower connection plate and is fixedly connected to the lumbar vertebrae lower connection plate, and the lumbar vertebrae sensor is fixedly connected below the lumbar vertebrae fixation plate; A waist steel cable, one end of which is connected to the thoracic vertebrae fixation plate and passes through the center of the lumbar vertebrae upper connection plate, the lumbar vertebrae elastic member and the lumbar vertebrae lower connection plate, and the other end of which is connected to the lumbar vertebrae fixation plate, and the connection position of at least one end of the connection structure of the two ends of the waist steel cable is adjustable to adjust the tension of the lumbar vertebrae; The pelvis has a hollow cavity, a speed sensor and a posture sensor are arranged in the central control cavity of the pelvis, and connecting parts connected to the leg assembly are arranged on the left and right sides of the pelvis.

5. The simulation dummy for parachute airborne test according to claim 1, characterized in that: The shoulder assembly includes a shoulder bracket and shoulder joints rotatably connected to the left and right ends of the shoulder bracket, respectively, the shoulder joint is rotatably connected to the arm assembly, and the axis of the rotational connection between the shoulder joint and the shoulder bracket and the axis of the rotational connection between the shoulder joint and the arm assembly are perpendicular; A first limiting structure for limiting the relative rotation angle between the shoulder joint and the shoulder support is also provided between the shoulder joint and the shoulder support.

6. The simulation dummy for parachute airborne test according to claim 1, characterized in that: The arm assembly includes arm bones and arm skin covering the outside of the arm bones, the arm bones include an upper arm bone having one end rotationally connected to the shoulder assembly, a forearm bone having one end rotationally connected to the other end of the upper arm bone, and a metacarpal bone rotationally connected to the other end of the forearm bone, a first damping structure is provided at the rotational connection between the upper arm bone and the shoulder assembly, and a second limiting structure for limiting the relative rotation angle between the upper arm bone and the forearm bone is provided at the rotational connection between the upper arm bone and the forearm bone.

7. The simulation dummy for parachute airborne test according to claim 1, characterized in that: The leg assembly includes a leg bone and a leg skin covering the outside of the leg bone; The leg bones include a femur, a knee joint, a shin bone, an ankle joint and a foot; one end of the femur is rotatably connected to the waist assembly via a ball joint, and the other end of the femur is fixedly connected to the knee joint; one end of the shin bone is rotatably connected to the knee joint, and the other end of the shin bone is rotatably connected to the ankle joint via a ball joint; the foot is fixedly connected to the ankle joint; a second damping structure is provided at a rotational connection between the femur and the waist assembly, and a third limiting structure for limiting a relative rotation angle between the shin bone and the knee joint is provided at a rotational connection between the shin bone and the knee joint; The leg assembly also includes a force sensor disposed on the leg bone.

8. The simulation dummy for parachute airborne test according to claim 1, characterized in that: The head assembly includes a head skeleton, on which an acceleration sensor and an air pressure sensor are arranged, and the head component also includes head skin covering the outside of the head skeleton.

9. The parachute airborne test simulation dummy according to claim 1, characterized in that: The dummy further includes a plurality of sensors arranged inside the dummy, a data acquisition device is arranged inside the chest assembly, and each of the sensors is electrically connected to the data acquisition device.

10. An adjustable seat for a simulation dummy for a parachute airborne test as claimed in any one of claims 1 to 9, characterized in that: The seat body comprises a seat plate for supporting the buttocks of a dummy, the adjustable seat further comprises a support plate whose rear end is rotatably connected to the front end of the seat plate and a support mechanism supported at the bottom of the support plate for adjusting the angle between the support plate and the seat plate, one end of the support mechanism is rotatably connected to the seat body, and the other end is rotatably and slidably arranged on the support plate; The seat plate is arranged to be inclined from rear to front and from top to bottom.

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