CN114394039B - Self-adaptive buffer partition device for military vehicle seat and use method - Google Patents
Self-adaptive buffer partition device for military vehicle seat and use method Download PDFInfo
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- CN114394039B CN114394039B CN202111583554.5A CN202111583554A CN114394039B CN 114394039 B CN114394039 B CN 114394039B CN 202111583554 A CN202111583554 A CN 202111583554A CN 114394039 B CN114394039 B CN 114394039B
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- 238000005192 partition Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 75
- 239000002184 metal Substances 0.000 claims abstract description 69
- 230000003139 buffering effect Effects 0.000 claims description 25
- 238000000926 separation method Methods 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 238000004880 explosion Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 230000036544 posture Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 1
- 238000010008 shearing Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
- B60N2/42727—Seats or parts thereof displaced during a crash involving substantially rigid displacement
- B60N2/42754—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
Abstract
The invention belongs to the field of explosion-proof armored vehicles, and particularly relates to a self-adaptive buffer partition device for a military vehicle seat and a use method thereof. The device comprises a buffer partition arranged between an upper beam and a lower beam of the seat, an adjusting mechanism and a locking mechanism; the buffer breaker comprises a fixed limiting pin at the uppermost end, a pair of fixed limiting pins arranged at the lower end in an up-down opposite manner, a movable limiting pin arranged between the upper fixed limiting pin and the lower fixed limiting pin, and a metal belt which penetrates through the limiting pins and is in an S-like shape; the adjusting mechanism adjusts the position of the movable limiting pin according to the weight of the passenger, so that the pre-energy absorbing curvature of the metal belt is changed; the locking mechanism is used for locking the adjusting mechanism. The buffer partition device changes the pre-energy-absorbing curvature of the metal belt according to the weight difference of different passengers, so that the energy-absorbing power of the buffer partition device after being impacted is changed, and accurate protection is provided for the passengers with different weights.
Description
Technical Field
The invention belongs to the field of explosion-proof armored vehicles, and particularly relates to a self-adaptive buffer partition device for a military vehicle seat and a use method thereof.
Background
There are increasing factors on the battlefield that can threaten the life safety of high motor vehicle occupants, with land mines and easy explosive devices (Improvised Explosive Device, IED) becoming the major threat to land military vehicles. The buffer blocking device of the lightning protection seat is a key component of an occupant restraint system for energy absorption, so that the acceleration impact response transmitted to an occupant through the seat is reduced to a great extent, and the occupant safety is ensured.
At present, a plurality of different types of buffer partition devices are available, and the buffer partition devices are widely applied to protective seats, so that the risk of injury of fighter passengers with specific weight can be greatly reduced. For example, patent "CN 111845492A" describes a buffer blocking device that attenuates and blocks impact energy transmitted from a vehicle body to a seat mainly by plastic deformation caused by stretching of a serpentine spring, but conventional buffer blocking devices do not provide accurate and effective protection for fighter occupants of different weights.
In summary, although the buffer blocking device can greatly reduce the casualties of passengers in a vehicle, the buffer blocking device is developed and designed for passengers with specific weights and does not have the capability of adapting to passengers with different weights.
Disclosure of Invention
The invention aims to provide a self-adaptive buffer partition device for a military vehicle seat and a use method thereof.
The technical solution for realizing the purpose of the invention is as follows: a self-adaptive buffer partition device for a military vehicle seat comprises a buffer partition device arranged between an upper beam and a lower beam of the seat, an adjusting mechanism and a locking mechanism;
the buffer separator comprises a fixed limiting pin at the uppermost end, a pair of fixed limiting pins arranged at the lower end in an up-down opposite manner, a movable limiting pin arranged between the upper fixed limiting pin and the lower fixed limiting pin, and a metal belt which penetrates through the limiting pins and is in an S-like shape;
the adjusting mechanism adjusts the position of the movable limiting pin according to the weight of the passenger, so that the pre-energy absorbing curvature of the metal belt is changed;
the locking mechanism is used for locking the adjusting mechanism.
Further, the device also comprises a fixing mechanism for fixing the buffer partition, wherein the fixing mechanism comprises an upper connector, a buffer partition outer box and a metal belt fixing block;
the upper connector is connected with the upper cross beam, the upper connector is fixedly connected with the metal strap fixing block, the upper end part of the metal strap is fixedly connected with the metal strap fixing block through a metal strap fixing bolt, and the lower end of the metal strap is a free end;
the outer box lower extreme of buffering cuts off the ware and is connected with the bottom end rail, and fixed spacer pin is fixed to be set up at the inner wall of the outer box of buffering cuts off the ware, be equipped with rectangular type's groove tooth on the wall of the outer box of buffering cuts off the ware, the groove tooth includes a plurality of circular grooves along vertical setting, circular arc transitional coupling between the adjacent circular groove, and every circular groove is the location of a position of removal spacer pin.
Further, the metal belt is firstly attached to one side of the arc surface of the uppermost fixed limiting pin, then sequentially passes through the uppermost fixed limiting pin and the movable limiting pin, passes through the outer contour of the groove tooth far away from the movable limiting pin, and finally passes through the upper and lower fixed limiting pins at the lower end, the metal belt of the movable limiting pin, which is close to the metal belt, does not interfere with the movable limiting pin moving in the groove tooth, and the overall shape of the metal belt is similar to an S shape;
after the position of the movable limiting pin is fixed, when the metal belt is stretched due to explosion impact, the metal belt positioned at one side of the movable limiting pin has a movement trend in the horizontal direction and acts together with the groove teeth of the outer box of the buffer partition to restrict the change of the freedom degree of the movable limiting pin after the impact.
Further, the vehicle anti-collision device also comprises a false triggering mechanism which is used for preventing the false starting of the buffer isolation device caused by the bumping of the road surface during the normal running process of the vehicle.
Further, the false triggering mechanism is a shearing pin, the middle part of the shearing pin is in interference connection with the metal belt fixing block, two ends of the shearing pin are fixed in the inner groove of the outer box of the buffer partition, when the impact force is greater than the breaking strength of the shearing pin, the shearing pin breaks, and the metal belt fixing block and the outer box of the buffer partition can move up and down.
Further, the device also comprises an upper cushion framework and a lower cushion framework which are rotationally connected with the front end, and the adjusting mechanism comprises an elastic connecting rod, a connecting rod spiral spring and an angle adjusting mechanism of the lower cushion framework of the upper cushion framework;
the connecting rod spiral spring is sleeved at the rear end of the upper cushion framework, one end of the connecting rod spiral spring is connected with the upper cushion framework, the other end of the connecting rod spiral spring is connected with one end of the elastic connecting rod, the other end of the elastic connecting rod is connected with the movable limiting pin, when an occupant sits on the seat, the angle between the upper cushion framework and the lower cushion framework is adjusted by the upper cushion framework angle adjusting mechanism according to the weight of the occupant, and meanwhile, the elastic connecting rod has anticlockwise swinging force due to the effect of the spiral spring, and finally the movable limiting pin moves downwards and moves into the corresponding circular groove of the groove teeth.
Further, an upper cushion framework limiting pad is arranged on the upper surface of the lower cushion framework and used for limiting the upper cushion framework.
Further, the angle adjusting mechanism of the lower cushion framework of the upper cushion framework comprises cushion framework rotating plates which are arranged at two sides of the front end of the cushion framework in pairs, a connecting pin shaft, a cushion framework spiral spring, a spring sleeve and a framework mounting plate;
the lower cushion framework is connected with a lower cross beam of the seat through a sliding rail, and the sliding rail moves in the vertical direction to restrict the movement of the metal belt;
the cushion skeleton rolling disc is provided with a connecting rod and is connected with an upper cushion skeleton through the connecting rod, a spring sleeve is fixedly arranged on the inner side of the cushion skeleton rolling disc, a cushion skeleton scroll spring interference fit sleeve is arranged outside the spring sleeve, the cushion skeleton rolling disc is fixedly connected with a connecting pin shaft, one end of the connecting pin shaft is rotationally connected with a skeleton mounting plate, the skeleton mounting plate is fixedly mounted on a lower cushion skeleton, one end of the cushion skeleton scroll spring is connected with the cushion skeleton rolling disc, and the other end of the cushion skeleton scroll spring is connected with the skeleton mounting plate through a scroll spring limiting bolt.
Further, the locking mechanism comprises double ratchet mechanisms which are arranged at two sides of the front end of the cushion framework in pairs, a flexible pull ring which is arranged on the framework mounting plate, a spiral spring limit bolt and a manual adjusting handle;
the double-ratchet mechanism comprises a reverse ratchet, a reverse pawl, a positive ratchet, a positive pawl and a double-ratchet mechanism box, wherein the reverse ratchet and the positive ratchet are fixedly arranged on a connecting pin shaft, the reverse pawl and the positive pawl are rotatably arranged on the inner wall of the double-ratchet mechanism box, the rotating disc of the cushion framework drives the ratchet to rotate through the connecting pin shaft when rotating, the positive pawl is connected with the elastic pull ring through the pin shaft, the elastic pull ring pulls the pawl to be misplaced with the ratchet, the reverse pawl is fixedly connected with the adjusting handle through the pin shaft, and the rotating handle correspondingly rotates the reverse pawl to realize unlocking of the mechanism under the combined action of the reverse pawl and the elastic pull ring.
The method for buffering partition by adopting the device comprises the following steps:
step (1): when the weight of the passengers acts, the included angle between the upper cushion framework and the lower cushion framework is reduced, and the elastic connecting rod is pulled to move downwards relatively, so that the movement limiting pin moves downwards to move the tooth position, one ratchet wheel of the double ratchet wheel mechanism works, the reset rotation of the cushion is restrained, and the weight matching of different passengers is realized;
step (2): when sitting postures of passengers are adjusted, the adjusting handle is pulled to rotate, the other ratchet wheel of the double ratchet wheel mechanism is restrained to move, at the moment, the double ratchet wheel mechanism is locked, and the rotation of the upper cushion framework is restrained;
step (3): the tooth position of the movable limiting pin is changed, so that the pre-bending degree of the metal belt is changed, the energy absorption load is matched with the weights of different passengers, when the seat is impacted, the metal belt is stretched and attached to the limiting pin, and the metal belt is pulled to move through the relative movement of the upper beam and the lower beam of the seat to generate plastic deformation, so that the energy absorption and the buffering are realized;
step (4): the elastic connecting rod is manually adjusted by restoring the adjusting handle and pulling the elastic pull ring, so that the buffer separation device mechanism is reset, and the buffer separation device mechanism is used for multiple times.
Compared with the prior art, the invention has the remarkable advantages that:
(1) According to the self-adaptive buffering partition device for the lightning protection seat, the upper connecting block of the buffering partition is detachably connected with the upper beam of the seat, the outer box is detachably connected with the lower beam of the seat, the lower cushion framework is connected with the lower beam of the seat through the sliding rail, the sliding rail moves in the vertical direction to restrict the movement of the metal belt, and the metal belt plastically deforms to absorb energy, so that partition and buffering of impact energy transmitted to the lightning protection seat are realized, and the damage risk of passengers in a vehicle is greatly reduced.
(2) The self-adaptive buffering partition device for the lightning protection seat can automatically adjust the restraint tooth position of the movable limiting pin according to different weights of passengers, and after the restraint tooth position is locked by the locking mechanism, metal bands with different bending degrees in a pre-buffering state can be obtained, so that the lightning protection seat is matched with the weights of the passengers, and more effective protection is provided for the passengers with different weights.
(3) According to the self-adaptive buffer partition device for the lightning protection seat, provided by the invention, the pre-deformation energy-absorbing curvature of the metal belt is changed by changing the relative position between the fixed limiting pin and the movable limiting pin, and the size of the deformation moment of the spiral spring is changed, so that the matching between the limiting groove teeth of the outer box and the weight passengers with different percentiles can be realized.
(4) According to the self-adaptive buffer separation device for the lightning protection seat, the starting setting of the buffer separation device is realized through the action of the shearing pin, so that the buffer separation device cannot act under the working conditions of road jolt and the like, and the starting force of the starting mechanism can be adjusted through changing the material and the diameter of the shearing section of the shearing pin.
(5) According to the self-adaptive buffering partition device for the lightning protection seat, the upper connector of the buffering partition is connected with the metal belt, the metal belt is stressed to pull the movable limiting pin to move upwards in the buffering process, the outer box is restrained to move by the limiting groove teeth and synchronously moves with the cushion framework bearing the weight of an occupant, and impact energy is mainly transmitted to the cushion framework through the lower cross beam after being deformed and buffered by the metal belt, so that the damage risk of other mechanisms can be greatly reduced.
(6) According to the self-adaptive buffer partition device for the lightning protection seat, provided by the invention, the reset of the mechanism can be realized by manually rotating the adjusting handle, pulling the elastic pull ring and manually adjusting the elastic pull rod, and the repeated use of the lightning protection seat can be realized by replacing the metal belt and the shearing pin, so that the cost is greatly reduced.
Drawings
FIG. 1 is a schematic installation view of a self-adaptive buffer partition device for a lightning protection seat.
Fig. 2 is a sectional view showing an initial state of the buffer stop of the present application.
Fig. 3 is a sectional view of a pre-buffer state of the buffer stop of the present application.
Fig. 4 is an exploded view of a buffer stop of the present application.
Fig. 5 is a schematic view of the adjusting mechanism of the present application.
Fig. 6 is an exploded view of the rotary mechanism of the present application.
FIG. 7 is a left side view of the dual ratchet locking mechanism of the present application.
FIG. 8 is a cross-sectional elevation view of a dual ratchet lock-up mechanism of the present application.
FIG. 9 is a cross-sectional view of a dual ratchet lock-up mechanism of the present application.
FIG. 10 is an exploded view of the dual ratchet locking mechanism of the present application.
Fig. 11 is a schematic view of the load-bearing state of the adaptive buffer partition device of the lightning protection seat.
Fig. 12 is a schematic view of a buffering state of the adaptive buffering partition device of the lightning protection seat.
Reference numerals illustrate:
the device comprises a 1-connecting block, a 2-buffer breaker outer box, a 3-elastic connecting rod, a 4-connecting rod spiral spring, a 5-upper cushion framework, a 6-lower cushion framework, a 7-cushion framework rotating disc, an 8-double ratchet mechanism box, a 9-connecting pin roll, a 10-cushion framework spiral spring, a 11-framework mounting plate, a 12-elastic pull ring, a 13-spiral spring limit bolt, a 14-upper cushion framework fixing bolt, a 15-manual adjusting handle, a 16-upper cushion framework limit pad, a 17-steel pin, a 18-metal belt fixing block, a 19-shearing pin, a 20-metal belt fixing bolt, a 21-metal belt, a 22-fixed limit pin, a 23-movable limit pin, a 24-spiral spring sleeve, a 25-reverse ratchet wheel, a 26-reverse pawl, a 27-forward ratchet wheel, a 28-forward pawl, a 29-adjusting handle pin roll, a 30-elastic pull ring pin roll and a 31-buffer breaker.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
The invention aims to provide a novel self-adaptive buffer partition device for a lightning protection seat, which can realize partition of impact energy based on the impact transmitted to passengers by the lightning protection seat in a vehicle in a buffer and absorption explosion environment, and change the pre-energy-absorbing curvature of a metal belt according to the weight difference of different passengers, so that the energy-absorbing power of the buffer partition device after being impacted is changed, and accurate protection is realized for passengers with different weights. In addition, the invention can meet the driving requirements of different passengers, the device can be reset through the manual adjusting mechanism, and the device can be reused after explosion buffering through replacing the metal belt and the shear pin.
As shown in fig. 1 to 12, the self-adaptive buffer partition device for the lightning protection seat of the military vehicle comprises an upper connector 1, a buffer partition outer box 2, an elastic connecting rod 3, an upper cushion framework rotating disc 7, a double ratchet mechanism box 8, an upper cushion limiting pad 16, a spiral spring, an upper cushion framework 5, a lower cushion framework 6, bolts and pin shafts.
The energy absorption mechanism is a buffer partition, and the energy absorption mechanism and other mechanism connecting parts are an upper connector 1 and a buffer partition outer box 2 which are respectively connected with an upper beam and a lower beam of the seat through bolts.
The upper connector 1 is connected with the metal strap fixing block 18 through a steel pin 17, the upper end of the metal strap 21 is fixed on the metal strap fixing block 18 through a bolt, and the lower end sequentially passes through four limiting pins; the left and right sides of the outer box 2 of the buffer partition are provided with slot teeth, the movement limiting pin 23 is restrained from moving in the slot, and the fixed limiting pin is fixed in the outer box and does not move relative to the outer box; when other mechanisms fail, the movable limiting pin is constrained by the groove teeth of the outer box, so that the buffer energy absorber can still buffer and absorb energy by the lowest limit groove teeth, and the device is ensured to have certain protection capability.
One end of the elastic connecting rod 3 is connected with the movable limiting pin 23, the other end of the elastic connecting rod is rotatably connected with the upper cushion framework 5, the upper cushion framework 5 and the movable limiting pin 23 form an association motion relation through the elastic connecting rod 3, one end of the connecting rod spiral spring 4 is fixed on the elastic connecting rod, the elastic connecting rod has certain stretching and compression deformation capacity, the other end of the connecting rod is fixed on the cushion framework, the spiral spring 4 acts after installation, the elastic connecting rod 3 has a counterclockwise swing trend, when the upper cushion framework moves, the movable limiting pin moves downwards, and the movable limiting pin correspondingly moves into the groove teeth.
The spring sleeve 24 is fixedly connected with the cushion framework rotating disc 7, and the spiral spring 10 is connected with the sleeve through interference fit. The connecting pin shaft 9 is rotatably connected with the framework mounting plate 11 and the double-ratchet mechanism box respectively, and is fixedly connected with the cushion framework rotating disc 7, and when the turntable rotates, the ratchet wheel is driven to rotate through the connecting pin shaft 9, so that the locking mechanism works.
The inside of the double-ratchet mechanism comprises two ratchet wheels and corresponding pawls which are installed positively and negatively, and the ratchet wheels are connected with the installation box through a connecting pin shaft 9. The positive ratchet mechanism pawl 28 is connected with the elastic pull ring 12 through a pin shaft 30, the pawl 28 is misplaced with the ratchet 27 when the elastic pull ring is pulled, the reverse ratchet mechanism pawl 26 is fixedly connected with the adjusting handle 15 through a pin shaft 29, and the rotating handle correspondingly rotates the pawl to realize unlocking of the mechanism under the combined action of the rotating handle and the elastic pull ring.
According to the self-adaptive buffering partition device of the lightning protection seat, under the action of high-speed impact such as explosion, the device reset can be realized by only rotating the adjusting handle 15, pulling the elastic pull ring 12 and manually adjusting the elastic connecting rod 3; under the condition of high-speed impact such as explosion, the device can be reused by only replacing the metal belt 21 and the shear pin 19 and simultaneously pulling the elastic pull ring and the like, so that the cost is saved.
After the fighter takes the self-adaptive buffering and isolating device of the lightning protection seat, the upper cushion framework 5 rotates anticlockwise by a certain angle under the action of the spiral spring 10 after bearing the weight of the passenger, the tilting rear end of the upper cushion framework 5 pulls the elastic connecting rod 3 to move downwards, meanwhile, a reverse moment exists under the action of the spiral spring 4 of the connecting rod, the movable limiting pin 23 which is connected with the elastic connecting rod 3 is constrained to be clamped into the corresponding groove teeth on the outer box 2, and the four limiting pins jointly constrain the pre-energy absorbing curvature of the metal belt 21 after explosion occurs. After the sitting posture of the passenger is adjusted, the adjusting handle is rotated to lock the adjusting mechanism, the upper cushion framework 5 is restrained to continuously rotate downwards, and the elastic connecting rod 3 is prevented from being damaged after the cushion continuously rotates after being impacted. After being influenced by the high-speed impact after the explosion of a mine or a simple device, the two ends of the shearing pin are sheared and damaged, the seat upper cross beam drives the upper connector 1, the metal belt fixing block 18 and the metal belt 21 to move upwards, the metal belt 21 is subjected to pre-energy absorption deformation to reach a pre-energy absorption state shown in fig. 3, the metal belt is tightly attached to the limiting pin, when the impact further acts, the metal belt 21 continues to generate an upward movement trend, the repeated plastic deformation is used for buffering and absorbing the explosion impact energy, the high-speed impact transmitted by passengers and a vehicle body is blocked, and therefore the damage risk of the passengers is effectively reduced. Fig. 11 is a schematic view of the load-bearing state of the buffer separation device, the cushion skeleton drives the outer box of the buffer separation device to move downwards along the sliding rail after the buffer separation device is subjected to explosion impact, and fig. 12 is a schematic view of the buffer state of the buffer separation device.
Claims (1)
1. The method for buffering and isolating by adopting the self-adaptive buffering and isolating device of the military vehicle seat is characterized in that the self-adaptive buffering and isolating device of the military vehicle seat comprises a buffering and isolating device, an adjusting mechanism and a locking mechanism, wherein the buffering and isolating device is arranged between an upper beam and a lower beam of the seat; the buffer separator comprises a fixed limiting pin at the uppermost end, a pair of fixed limiting pins arranged at the lower end in an up-down opposite manner, a movable limiting pin arranged between the upper fixed limiting pin and the lower fixed limiting pin, and a metal belt which penetrates through the limiting pins and is in an S-like shape; the adjusting mechanism adjusts the position of the movable limiting pin according to the weight of the passenger, so that the pre-energy absorbing curvature of the metal belt is changed; the locking mechanism is used for locking the adjusting mechanism; the buffer partition device comprises a metal belt fixing block, a buffer partition device outer box and a metal belt fixing block, wherein the metal belt fixing block is fixedly connected with the metal belt fixing block; the upper connector is connected with the upper cross beam, the upper connector is fixedly connected with the metal strap fixing block, the upper end part of the metal strap is fixedly connected with the metal strap fixing block through a metal strap fixing bolt, and the lower end of the metal strap is a free end; the lower end of the outer box of the buffer partition is connected with the lower cross beam, the fixed limiting pin is fixedly arranged on the inner wall of the outer box of the buffer partition, the wall of the outer box of the buffer partition is provided with strip-shaped groove teeth, each groove tooth comprises a plurality of circular grooves which are vertically arranged, the circular grooves are connected in an arc transition manner, and each circular groove is used for positioning one position of the movable limiting pin; the metal belt is firstly attached to one side of the arc surface of the uppermost fixed limiting pin, then sequentially passes through the uppermost fixed limiting pin and the movable limiting pin, passes through the outer side contour of the groove tooth far away from the fixed limiting pin, and finally passes through the upper and lower fixed limiting pins at the lower end, the metal belt of the movable limiting pin, which is close to the metal belt, does not interfere with the movable limiting pin moving in the groove tooth, and the whole shape of the metal belt is similar to an S shape; after the position of the movable limiting pin is fixed, when the metal belt is stretched due to explosion impact, the metal belt positioned at one side of the movable limiting pin has a movement trend in the horizontal direction and acts together with the groove teeth of the outer box of the buffer partition to restrict the change of the freedom degree of the movable limiting pin after the impact; the device also comprises a false triggering mechanism, which is used for preventing the false starting of the buffer isolation device caused by the bumping of the road surface in the normal running process of the vehicle; the false triggering mechanism is a shear pin, the middle part of the shear pin is in interference connection with the metal belt fixing block, two ends of the shear pin are fixed in the inner groove of the outer box of the buffer partition, when the impact force is greater than the breaking strength of the shear pin, the shear pin breaks, and the metal belt fixing block and the outer box of the buffer partition can move up and down; the front end of the upper cushion framework is rotatably connected with the front end of the lower cushion framework, and the adjusting mechanism comprises an elastic connecting rod, a connecting rod spiral spring and an angle adjusting mechanism of the lower cushion framework of the upper cushion framework; the lower cushion framework is connected with a lower cross beam of the seat through a sliding rail, and the sliding rail moves in the vertical direction to restrict the movement of the metal belt; the connecting rod spiral spring is sleeved at the rear end of the upper cushion framework, one end of the connecting rod spiral spring is connected with the upper cushion framework, the other end of the connecting rod spiral spring is connected with one end of the elastic connecting rod, the other end of the elastic connecting rod is connected with the movable limiting pin, when an occupant sits on the seat, the angle between the upper cushion framework and the lower cushion framework is adjusted by the upper cushion framework angle adjusting mechanism according to the weight of the occupant, and meanwhile, the elastic connecting rod has anticlockwise swinging force due to the effect of the spiral spring, and finally the movable limiting pin moves downwards and moves into a corresponding circular groove of the groove teeth; an upper cushion framework limiting pad is arranged on the upper surface of the lower cushion framework and used for limiting the upper cushion framework; the angle adjusting mechanism of the lower cushion framework of the upper cushion framework comprises cushion framework rotating discs which are arranged at two sides of the front end of the cushion framework in pairs, a connecting pin shaft, a cushion framework spiral spring, a spring sleeve and a framework mounting plate; the seat cushion framework rotating disc is provided with a connecting rod and is connected with the upper seat cushion framework through the connecting rod, a spring sleeve is fixedly arranged on the inner side of the seat cushion framework rotating disc, a seat cushion framework scroll spring is sleeved outside the spring sleeve in an interference fit manner, the seat cushion framework rotating disc is fixedly connected with a connecting pin shaft, one end of the connecting pin shaft is rotationally connected with a framework mounting plate, the framework mounting plate is fixedly mounted on a lower seat cushion framework, one end of the seat cushion framework scroll spring is connected with the seat cushion framework rotating disc, and the other end of the seat cushion framework scroll spring is connected with the framework mounting plate through a scroll spring limiting bolt; the locking mechanism comprises double ratchet mechanisms which are arranged at two sides of the front end of the cushion framework in pairs, a flexible pull ring which is arranged on the framework mounting plate, a spiral spring limit bolt and a manual adjusting handle; the double-ratchet mechanism comprises a reverse ratchet, a reverse pawl, a positive ratchet, a positive pawl and a double-ratchet mechanism box, wherein the reverse ratchet and the positive ratchet are fixedly arranged on a connecting pin shaft, the reverse pawl and the positive pawl are rotatably arranged on the inner wall of the double-ratchet mechanism box, the rotating disc of the cushion framework drives the ratchet to rotate through the connecting pin shaft when rotating, the positive pawl is connected with the elastic pull ring through the pin shaft, the elastic pull ring pulls the pawl to be misplaced with the ratchet, the reverse pawl is fixedly connected with the adjusting handle through the pin shaft, the rotating handle correspondingly rotates the reverse pawl, and the reverse pawl and the elastic pull ring jointly act to unlock the mechanism;
the method comprises the following steps:
step (1): when the weight of the passengers acts, the included angle between the upper cushion framework and the lower cushion framework is reduced, and the elastic connecting rod is pulled to move downwards relatively, so that the movement limiting pin moves downwards to move the tooth position, one ratchet wheel of the double ratchet wheel mechanism works, the reset rotation of the cushion is restrained, and the weight matching of different passengers is realized;
step (2): when sitting postures of passengers are adjusted, the adjusting handle is pulled to rotate, the other ratchet wheel of the double ratchet wheel mechanism is restrained to move, at the moment, the double ratchet wheel mechanism is locked, and the rotation of the upper cushion framework is restrained;
step (3): the tooth position of the movable limiting pin is changed, so that the pre-bending degree of the metal belt is changed, the energy absorption load is matched with the weights of different passengers, when the seat is impacted, the metal belt is stretched and attached to the limiting pin, and the metal belt is pulled to move through the relative movement of the upper beam and the lower beam of the seat to generate plastic deformation, so that the energy absorption and the buffering are realized;
step (4): the elastic connecting rod is manually adjusted by restoring the adjusting handle and pulling the elastic pull ring, so that the buffer separation device mechanism is reset, and the buffer separation device mechanism is used for multiple times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111583554.5A CN114394039B (en) | 2021-12-22 | 2021-12-22 | Self-adaptive buffer partition device for military vehicle seat and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN114394039A (en) | 2022-04-26 |
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