CN114394039A - Military vehicle seat self-adaptive buffer partition device and use method thereof - Google Patents
Military vehicle seat self-adaptive buffer partition device and use method thereof Download PDFInfo
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- CN114394039A CN114394039A CN202111583554.5A CN202111583554A CN114394039A CN 114394039 A CN114394039 A CN 114394039A CN 202111583554 A CN202111583554 A CN 202111583554A CN 114394039 A CN114394039 A CN 114394039A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 74
- 230000000670 limiting effect Effects 0.000 claims abstract description 73
- 239000002184 metal Substances 0.000 claims abstract description 68
- 230000003139 buffering effect Effects 0.000 claims abstract description 11
- 230000002441 reversible effect Effects 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 238000004880 explosion Methods 0.000 claims description 9
- 230000002829 reductive effect Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
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- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims 1
- 238000010008 shearing Methods 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000008569 process Effects 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
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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
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Abstract
The invention belongs to the field of explosion-proof armored vehicles, and particularly relates to a military vehicle seat self-adaptive buffer partition device and a using method thereof. The device comprises a buffer isolator, an adjusting mechanism and a locking mechanism, wherein the buffer isolator is arranged between an upper cross beam and a lower cross beam of the seat; 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 size of the pre-absorbing curvature of the metal belt is changed; the locking mechanism is used for locking the adjusting mechanism. The buffering breaker changes the size of the pre-energy-absorbing curvature of the metal belt according to the weight difference of different passengers, thereby changing the energy-absorbing power of the buffering breaker after being impacted and realizing the accurate protection of the passengers with different weights.
Description
Technical Field
The invention belongs to the field of explosion-proof armored vehicles, and particularly relates to a military vehicle seat self-adaptive buffer partition device and a using method thereof.
Background
There are increasing factors that can threaten the life safety of high-speed motor vehicle occupants in the battlefield, where enhanced Explosive devices (IEDs) from ground mines become the main threat to ground military vehicles. The buffer partition device of the lightning protection seat is a key component of an occupant restraint system for absorbing energy, and the acceleration impact response transmitted to an occupant through the seat is reduced to a great extent, so that the safety of the occupant is ensured.
At present, a plurality of different types of buffer partition devices are available and are applied to protective seats in a large number, and the injury risk of combat passengers with specific weight can be greatly reduced. For example, the patent "CN 111845492 a" describes a buffer partition device, which mainly attenuates and partitions the impact energy transferred to the seat by the vehicle body through the plastic deformation generated by the stretching of the serpentine spring, but the traditional buffer partition device cannot provide precise and effective protection for the combat passengers with different weights.
As described above, although the above-described impact reduction and isolation apparatus can significantly reduce the casualties of occupants in the vehicle, it is developed for occupants of a specific weight and is not capable of accommodating occupants of different weights.
Disclosure of Invention
The invention aims to provide a military vehicle seat self-adaptive buffer partition device and a using 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, an adjusting mechanism and a locking mechanism, wherein the buffer partition device is arranged between an upper cross beam and a lower cross beam of the seat;
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 mode, 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 size of the pre-absorbing curvature of the metal belt is changed;
the locking mechanism is used for locking the adjusting mechanism.
The buffer breaker fixing device comprises a buffer breaker outer box, a metal belt fixing block and a fixing mechanism, wherein the buffer breaker outer box is arranged on the metal belt fixing block;
the upper connector is connected with the upper cross beam, the upper connector is fixedly connected with the metal belt fixing block, the upper end part of the metal belt is fixedly connected with the metal belt fixing block through a metal belt fixing bolt, and the lower end of the metal belt is a free end;
the buffer breaker outer box lower extreme and the bottom end rail are connected, and fixed spacer pin is fixed to be set up the inner wall outside the buffer breaker outer box, be equipped with rectangular shape's groove tooth on the wall of buffer breaker outer box, the groove tooth includes a plurality of circular recesses along vertical setting, circular arc transitional coupling between the adjacent circular recess, and each circular recess is the location of a position of removing the spacer pin.
Furthermore, the metal belt is firstly attached to the arc surface on one side of the uppermost fixed limiting pin, then sequentially penetrates through the space between the uppermost fixed limiting pin and the movable limiting pin, passes through the outer profile of the groove tooth far away from the movable limiting pin, and finally penetrates through the space between the upper fixed limiting pin and the lower fixed limiting pin at the lower end, the metal belt close to the metal belt part of the movable limiting pin 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 on one side of the movable limiting pin has a motion trend in the horizontal direction and acts together with the groove teeth of the outer box of the buffer breaker to restrain the change of the degree of freedom of the movable limiting pin after the impact.
Furthermore, the vehicle anti-false-triggering device further comprises a false triggering mechanism used for preventing the false starting of the buffer isolating device caused by road bumping in the normal running process of the vehicle.
Further, the false triggering mechanism is a shearing pin, the middle of the shearing pin is in interference connection with the metal strip fixing block, two ends of the shearing pin are fixed in the inner groove of the outer box of the buffer breaker, when the impact force is greater than the breaking strength of the shearing pin, the shearing pin breaks, and the metal strip fixing block and the buffer breaker can move up and down.
The adjusting mechanism comprises an elastic connecting rod, a connecting rod volute spring and an upper cushion framework and a lower cushion framework angle adjusting mechanism;
the rear end at last cushion skeleton is established to connecting rod volute spring cover, connecting rod volute spring one end and last cushion skeleton joint, the other end is connected with the one end of elastic connecting rod, elastic connecting rod's the other end and removal spacer pin are connected, when the passenger sits on the seat, cushion skeleton angle adjustment mechanism adjusts the angle between the cushion skeleton under the upper cushion skeleton according to passenger's weight under the upper cushion skeleton, and simultaneously because volute spring's effect makes elastic connecting rod have anticlockwise swing's power, make at last and remove the spacer pin downstream, remove the spacer pin and move to the corresponding circular recess of flute profile tooth in.
Further, the upper surface of the lower cushion framework is provided with an upper cushion framework limiting pad for limiting the upper cushion framework.
Further, the angle adjusting mechanism for the upper cushion framework and the lower cushion framework comprises cushion framework rotating discs, connecting pin shafts, cushion framework volute springs, spring sleeves and framework mounting plates, wherein the cushion framework rotating discs are arranged on two sides of the front end of the cushion framework in pairs;
the lower cushion framework is connected with the lower seat beam through a slide rail, and the slide rail moves in the vertical direction to restrict the movement of the metal belt;
the cushion skeleton rolling disc is equipped with the connecting rod and is connected through connecting rod and last cushion skeleton, the inboard fixed spring sleeve that is equipped with of cushion skeleton rolling disc, cushion skeleton spiral spring interference fit cover are established outside the spring sleeve, cushion skeleton rolling disc and connecting pin axle fixed connection, and connecting pin axle one end and skeleton mounting panel rotate to be connected, and on skeleton mounting panel fixed mounting cushion skeleton under, cushion skeleton spiral spring one end and cushion skeleton rolling disc are connected, and the cushion skeleton spiral spring other end passes through spiral spring spacing bolt and skeleton mounting panel and connects.
Furthermore, the locking mechanism comprises double ratchet mechanisms which are arranged on two sides of the front end of the seat cushion framework in pairs, an elastic pull ring arranged on the framework mounting plate, a volute spiral spring limiting bolt and a manual adjusting handle;
the double-ratchet mechanism comprises a reverse ratchet wheel, a reverse pawl, a positive ratchet wheel, a positive pawl and a double-ratchet mechanism box, wherein the reverse ratchet wheel and the positive ratchet wheel 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 seat cushion framework rotating disc drives the ratchet wheel to rotate through the connecting pin shaft when rotating, the positive pawl is connected with an elastic pull ring through the pin shaft, the elastic pull ring pulls the pawl to be staggered with the ratchet wheel, the reverse pawl is fixedly connected with an adjusting handle through the pin shaft, the rotating handle correspondingly rotates the reverse pawl, and the unlocking of the mechanism is realized under the combined action of the rotating handle and the elastic pull ring.
A method for performing buffer partition by adopting the device comprises the following steps:
step (1): when the weight of a passenger acts, the included angle between the upper cushion framework and the lower cushion framework is reduced, the elastic connecting rod is pulled to move downwards relatively, so that the movable limiting pin moves downwards to move the tooth position, one ratchet wheel of the double-ratchet mechanism works to restrict the reset rotation of the cushion, and the matching of different passenger weights is realized;
step (2): when the sitting posture of the passenger is adjusted, the adjusting handle is pulled to rotate, the other ratchet wheel of the double-ratchet mechanism is restrained to move, the double-ratchet mechanism is locked at the moment, and the rotation of the upper cushion framework is restrained;
and (3): the tooth positions of the movable limiting pins are changed, so that the pre-bending degree of the metal belt is changed, the matching of energy-absorbing load and different passenger weights is realized, when the seat is impacted, the metal belt is tightened and attached to the limiting pins, and the metal belt is pulled to move to generate plastic deformation through the relative movement of the upper crossbeam and the lower crossbeam of the seat, so that energy-absorbing buffering is realized;
and (4): the buffer partition device mechanism is reset by restoring the adjusting handle, pulling the elastic pull ring and manually adjusting the elastic connecting rod, so that repeated use is realized.
Compared with the prior art, the invention has the remarkable advantages that:
(1) according to the self-adaptive buffer partition device for the lightning protection seat, the upper connecting block of the buffer partition device is detachably connected with the upper seat beam, the outer box is detachably connected with the lower seat beam, the lower cushion framework is connected with the lower seat beam through the slide rail, the slide rail moves in the vertical direction to restrict the movement of the metal belt, the metal belt is subjected to plastic deformation and energy absorption, the partition and the buffer 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 buffer partition device of the lightning protection seat can automatically adjust the restraining tooth positions of the movable limiting pins according to different weights of passengers, and metal belts with different bending degrees in a pre-buffering state can be obtained after the locking mechanism is locked, so that the matching of the lightning protection seat and the weights of the passengers is realized, 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, the pre-deformation energy absorption 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 torque of the volute spiral spring is changed, so that the matching between the limiting groove teeth of the outer box and passengers with different percentile weights can be realized.
(4) According to the self-adaptive buffer partition device for the lightning protection seat, the starting setting of the buffer partition device is realized through the action of the shearing pin, so that the buffer partition device does not act under the working conditions of road bumping and the like, and the starting force of the starting mechanism can be adjusted by changing the material and the diameter of the shearing section of the shearing pin.
(5) According to the self-adaptive buffer partition device for the lightning protection seat, the upper connector of the buffer partition device is connected with the metal belt, the metal belt is stressed to pull the movable limiting pin to move upwards in the buffer process, the outer box restrains the movement of the movable limiting pin through the limiting groove teeth and moves synchronously with the cushion framework bearing the weight of passengers, impact energy is mainly buffered through the deformation of the metal belt and then transmitted to the cushion framework through the lower cross beam, and 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 view illustrating the installation of the self-adaptive cushioning partition device of the lightning protection seat of the present application.
Fig. 2 is a sectional view of the buffering breaker in an initial state.
Figure 3 is a cross-sectional view of the present application of a buffer breaker in a pre-buffered state.
Figure 4 is an exploded view of the buffer breaker of the present application.
FIG. 5 is a schematic view of an adjustment mechanism of the present application.
Fig. 6 is an exploded view of the rotating mechanism of the present application.
FIG. 7 is a left side view of the dual ratchet deadlocking mechanism of the present application.
FIG. 8 is a cross-sectional view of the positive ratchet of the dual ratchet deadlocking mechanism of the present application.
FIG. 9 is a cross-sectional view of the reverse ratchet of the dual ratchet locking 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 status of the self-adaptive cushioning partition device of the lightning protection seat of the present application.
FIG. 12 is a schematic view of a buffering state of the lightning protection seat adaptive buffering partition device according to the present application.
Description of reference numerals:
1-connecting block, 2-buffer breaker outer box, 3-elastic connecting rod, 4-connecting rod volute spring, 5-upper cushion frame, 6-lower cushion frame, 7-cushion frame rotating disc, 8-double ratchet mechanism box, 9-connecting pin shaft, 10-cushion frame volute spring, 11-frame mounting plate, 12-elastic pull ring, 13-volute spring limit bolt, 14-upper cushion frame fixing bolt, 15-manual adjusting handle, 16-upper cushion frame limit pad, 17-steel pin, 18-metal band fixing block, 19-shearing pin, 20-metal band fixing bolt, 21-metal band, 22-fixing limit pin, 23-moving volute limit pin, 24-spring sleeve, 25-reverse ratchet, 26-reverse pawl, 27-positive ratchet, 28-positive pawl, 29-adjusting handle pin shaft, 30-elastic pull ring pin shaft and 31-buffer breaker.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
The invention aims to provide a novel self-adaptive buffer partition device of a lightning protection seat based on the functions of buffering and absorbing impact transmitted to passengers by the lightning protection seat in an explosion environment, which can realize the partition of impact energy and change the size of pre-absorbing curvature of a metal belt according to the weight difference of different passengers, thereby changing the energy absorbing power of a buffer partition device after impact and realizing the accurate protection of the passengers with different weights. In addition, the device can meet the driving requirements of different passengers, the resetting of the device is realized through the manual adjusting mechanism, and the repeated use of the device after explosion buffering can be realized through replacing the metal belt and the shearing pin.
As shown in figures 1-12, a self-adaptive buffer partition device for a lightning protection seat of a 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 volute spiral spring, an upper cushion framework 5, a lower cushion framework 6, a bolt and a pin shaft.
The energy absorption mechanism is a buffer breaker, and the connecting parts of the energy absorption mechanism and other mechanisms are an upper connector 1 and a buffer breaker 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 a metal belt fixing block 18 through a steel pin 17, the upper end of a metal belt 21 is fixed on the metal belt fixing block 18 through a bolt, and the lower end of the metal belt 21 sequentially penetrates through four limiting pins; the left and right surfaces of the buffer breaker outer box 2 are provided with groove teeth to restrict the movement of the movable limiting pin 23 in the groove, 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 restrained by the outer box groove teeth, and the buffering energy absorber can still absorb energy by the limiting groove teeth at the lowest position, so that certain protection capability of the device is ensured.
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 forms an associated motion relation with the movable limiting pin 23 through the elastic connecting rod 3, one end of the connecting rod volute 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 elastic connecting rod is fixed on the cushion framework, the volute spring 4 acts after installation, the elastic connecting rod 3 has a tendency of anticlockwise swinging, and when the upper cushion framework moves, the movable limiting pin moves downwards, and the movable limiting pin correspondingly moves to the inside of the groove teeth.
The spring sleeve 24 is fixedly connected with the cushion framework rotating disc 7, and the volute spiral spring 10 is connected with the sleeve through interference fit. The connecting pin shaft 9 is respectively and rotatably connected with the framework mounting plate 11 and the double-ratchet mechanism box and fixedly connected with the cushion framework rotating disc 7, and when the rotating disc rotates, the connecting pin shaft 9 drives the ratchet wheel to rotate, so that the locking mechanism works.
The double-ratchet mechanism comprises two ratchets which are installed positively and negatively and corresponding pawls, and the ratchets 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 dislocated 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, the rotating handle correspondingly rotates the pawl, and the unlocking of the mechanism is realized under the combined action of the rotating handle and the elastic pull ring.
The self-adaptive buffer partition device of the lightning protection seat can realize the reset of the device only by rotating the adjusting handle 15, pulling the elastic pull ring 12 and manually adjusting the elastic connecting rod 3 under the action of high-speed impact such as explosion and the like; under the condition of high-speed impact action such as explosion, the metal belt 21 and the shearing pin 19 are replaced, and the elastic pull ring is pulled, so that the device can be reused, and the cost is saved.
The operation passenger takes on the self-adaptation of lightning protection seat buffer off device back is gone up cushion skeleton 5 and is born the certain angle of anticlockwise rotation of passenger's weight back by volute spiral spring 10 effect, goes up 5 perk rear end pulling elastic connecting rod 3 downstream of cushion skeleton, and there is a reverse moment by connecting rod volute spiral spring 4's effect simultaneously, and the removal spacer pin 23 card that the restraint is connected with elastic connecting rod 3 corresponds the tooth on advancing outer box 2, and four spacer pins retrain the pre-absorption camber of metal band 21 after the explosion emergence jointly. After the sitting posture of the passenger is adjusted, the adjusting handle is rotated to lock the adjusting mechanism, and the upper cushion framework 5 is restrained to continue to rotate downwards so as to prevent the elastic connecting rod 3 from being damaged after the cushion continues to rotate after being impacted. After being influenced by high-speed impact after the explosion of a landmine or a simple device, the two ends of the shearing pin are sheared and damaged, the upper crossbeam of the seat drives the upper connector 1, the metal belt fixing block 18 and the metal belt 21 to move upwards, the metal belt 21 is deformed in a pre-absorbing manner to reach a pre-absorbing 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 explosion impact energy is buffered and absorbed through repeated plastic deformation, the high-speed impact transmitted by a passenger and a vehicle body is cut off, and therefore the damage risk of the passenger is effectively reduced. Fig. 11 is a schematic view showing a load-bearing state of the buffer partition device, in which the cushion frame drives the buffer partition outer box to move downward along the slide rail after undergoing an explosive impact, and fig. 12 is a schematic view showing a buffer state of the buffer partition device.
Claims (10)
1. A self-adaptive buffer partition device for a military vehicle seat is characterized by comprising a buffer partition device, an adjusting mechanism and a locking mechanism, wherein the buffer partition device is arranged between an upper cross beam and a lower cross beam of the seat;
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 mode, 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 size of the pre-absorbing curvature of the metal belt is changed;
the locking mechanism is used for locking the adjusting mechanism.
2. The apparatus of claim 1, further comprising a fixing mechanism for fixing the buffer breaker, the fixing mechanism comprising an upper connector, a buffer breaker outer case and a metal tape fixing block;
the upper connector is connected with the upper cross beam, the upper connector is fixedly connected with the metal belt fixing block, the upper end part of the metal belt is fixedly connected with the metal belt fixing block through a metal belt fixing bolt, and the lower end of the metal belt is a free end;
the buffer breaker outer box lower extreme and the bottom end rail are connected, and fixed spacer pin is fixed to be set up the inner wall outside the buffer breaker outer box, be equipped with rectangular shape's groove tooth on the wall of buffer breaker outer box, the groove tooth includes a plurality of circular recesses along vertical setting, circular arc transitional coupling between the adjacent circular recess, and each circular recess is the location of a position of removing the spacer pin.
3. The device according to claim 2, wherein the metal belt is firstly attached to one side arc surface of the uppermost fixed limiting pin, then sequentially passes through the space between the uppermost fixed limiting pin and the movable limiting pin, passes through the outer profile of the groove teeth far away from the fixed limiting pin, and finally passes through the space between the upper fixed limiting pin and the lower fixed limiting pin at the lower end, the metal belt close to the metal belt part of the movable limiting pin does not interfere with the movable limiting pin moving in the groove teeth, and the whole metal belt is in an S-like 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 on one side of the movable limiting pin has a motion trend in the horizontal direction and acts together with the groove teeth of the outer box of the buffer breaker to restrain the change of the degree of freedom of the movable limiting pin after the impact.
4. The apparatus of claim 3, further comprising a false trigger mechanism for preventing false activation of the cushioning isolation device due to road bumps during normal vehicle travel.
5. The apparatus of claim 4, wherein the mis-trigger mechanism is a shear pin, the middle of the shear pin is connected with the metal strip fixing block in an interference manner, two ends of the shear pin are fixed in the inner groove of the buffer breaker outer box, when the impact force is greater than the breaking strength of the shear pin, the shear pin is broken, and the metal strip fixing block and the buffer breaker outer box can move up and down.
6. The device as claimed in claim 5, further comprising an upper cushion frame and a lower cushion frame which are rotationally connected at the front ends, wherein the adjusting mechanism comprises an elastic connecting rod, a connecting rod volute spring and an angle adjusting mechanism of the lower cushion frame of the upper cushion frame;
the lower cushion framework is connected with the lower seat beam through a slide rail, and the slide rail moves in the vertical direction to restrict the movement of the metal belt;
the rear end at last cushion skeleton is established to connecting rod volute spring cover, connecting rod volute spring one end and last cushion skeleton joint, the other end is connected with the one end of elastic connecting rod, elastic connecting rod's the other end and removal spacer pin are connected, when the passenger sits on the seat, cushion skeleton angle adjustment mechanism adjusts the angle between the cushion skeleton under the upper cushion skeleton according to passenger's weight under the upper cushion skeleton, and simultaneously because volute spring's effect makes elastic connecting rod have anticlockwise swing's power, make at last and remove the spacer pin downstream, remove the spacer pin and move to the corresponding circular recess of flute profile tooth in.
7. The device of claim 6, wherein the upper surface of the lower cushion frame is provided with an upper cushion frame limiting pad for limiting the upper cushion frame.
8. The device as claimed in claim 7, wherein the upper cushion frame and lower cushion frame angle adjusting mechanism comprises cushion frame rotating discs, connecting pin shafts, cushion frame volute springs, spring sleeves and a frame mounting plate which are arranged on two sides of the front end of the cushion frame in pairs;
the cushion skeleton rolling disc is equipped with the connecting rod and is connected through connecting rod and last cushion skeleton, the inboard fixed spring sleeve that is equipped with of cushion skeleton rolling disc, cushion skeleton spiral spring interference fit cover are established outside the spring sleeve, cushion skeleton rolling disc and connecting pin axle fixed connection, and connecting pin axle one end and skeleton mounting panel rotate to be connected, and on skeleton mounting panel fixed mounting cushion skeleton under, cushion skeleton spiral spring one end and cushion skeleton rolling disc are connected, and the cushion skeleton spiral spring other end passes through spiral spring spacing bolt and skeleton mounting panel and connects.
9. The device of claim 8, wherein the locking mechanism comprises a double-ratchet mechanism which is arranged at two sides of the front end of the cushion framework in pairs, an elastic pull ring arranged on the framework mounting plate, a volute spring limiting bolt and a manual adjusting handle;
the double-ratchet mechanism comprises a reverse ratchet wheel, a reverse pawl, a positive ratchet wheel, a positive pawl and a double-ratchet mechanism box, wherein the reverse ratchet wheel and the positive ratchet wheel 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 seat cushion framework rotating disc drives the ratchet wheel to rotate through the connecting pin shaft when rotating, the positive pawl is connected with an elastic pull ring through the pin shaft, the elastic pull ring pulls the pawl to be staggered with the ratchet wheel, the reverse pawl is fixedly connected with an adjusting handle through the pin shaft, the rotating handle correspondingly rotates the reverse pawl, and the unlocking of the mechanism is realized under the combined action of the rotating handle and the elastic pull ring.
10. A method of cushioning partition using the apparatus of claim 9, comprising the steps of:
step (1): when the weight of a passenger acts, the included angle between the upper cushion framework and the lower cushion framework is reduced, the elastic connecting rod is pulled to move downwards relatively, so that the movable limiting pin moves downwards to move the tooth position, one ratchet wheel of the double-ratchet mechanism works to restrict the reset rotation of the cushion, and the matching of different passenger weights is realized;
step (2): when the sitting posture of the passenger is adjusted, the adjusting handle is pulled to rotate, the other ratchet wheel of the double-ratchet mechanism is restrained to move, the double-ratchet mechanism is locked at the moment, and the rotation of the upper cushion framework is restrained;
and (3): the tooth positions of the movable limiting pins are changed, so that the pre-bending degree of the metal belt is changed, the matching of energy-absorbing load and different passenger weights is realized, when the seat is impacted, the metal belt is tightened and attached to the limiting pins, and the metal belt is pulled to move to generate plastic deformation through the relative movement of the upper crossbeam and the lower crossbeam of the seat, so that energy-absorbing buffering is realized;
and (4): the buffer partition device mechanism is reset by restoring the adjusting handle, pulling the elastic pull ring and manually adjusting the elastic connecting rod, so that repeated use is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
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| CN115257482A (en) * | 2022-08-26 | 2022-11-01 | 南京理工大学 | Self-adaptive weight and explosion buffering energy-absorbing device for military vehicle seat |
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| Publication number | Publication date |
|---|---|
| CN114394039B (en) | 2024-02-13 |
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