CN209987791U

CN209987791U - Military vehicle back row explosion-proof seat

Info

Publication number: CN209987791U
Application number: CN201920309209.4U
Authority: CN
Inventors: 张明; 王世达; 王显会; 王璜; 胡向群; 彭兵; 张进成; 周云波; 孙晓旺
Original assignee: Dongfeng Motor Corp; Nanjing Tech University
Current assignee: Dongfeng Motor Corp; Nanjing Tech University
Priority date: 2019-03-12
Filing date: 2019-03-12
Publication date: 2020-01-24
Anticipated expiration: 2029-03-12

Abstract

The utility model belongs to explosion-proof armored vehicle field, especially a military vehicle back row explosion-proof seat. The seat includes: a fixed part: the seat frame comprises two rows of rear-row seat mounting beams arranged in parallel and a guide rail fixedly connected to the rear-row seat mounting beams, and is used for fixing the seat frame part; a movable portion: the seat frame part is used for mounting a seat, and is in sliding connection with the fixed part through the sliding block and the guide rail; an energy absorber element: and the buffer and energy absorption device is arranged between the fixed part and the movable part and is used for buffering and absorbing energy when explosion occurs. The utility model provides a buffer, energy-absorbing element installation wherein makes the seat receive the impact bounce and the secondary absorbed energy when falling to reduce impact velocity, reduce human injury, better realization energy absorption and energy-absorbing element's used repeatedly.

Description

Military vehicle back row explosion-proof seat

Technical Field

The utility model belongs to explosion-proof armored vehicle field, especially a military vehicle back row explosion-proof seat.

Background

In the current anti-terrorism war and future armed conflict, the protection capability of armored vehicles to explosives such as mines, roadside bombs and simple explosive devices is improved, and especially the protection of passengers becomes a problem which is increasingly concerned by domestic and foreign research institutions. With respect to in-vehicle design, seat design is critical to reduce casualties. The explosion energy-absorbing seat is an important link in the design of armored vehicles, and the protective seat can absorb explosion energy through the elastic-plastic deformation of various energy-absorbing units, so that the impact acceleration and the stress of passengers are reduced.

In the face of the above situation, different explosion-proof seats are developed in various countries, but all have certain defects. For example, suspension seats developed by Autoflug corporation, although performing well in different explosion tests, have large space requirements and are unable to protect against secondary effects; the Blastride series seat developed by the QinetiQ North America company realizes small space and light weight, and is inconvenient for matching and replacing special vehicle types due to the integrated design. But China faces the phenomena of low technical capability, serious structural homogeneity and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to reduce passenger's injury in the explosion environment to a military vehicle back row explosion-proof seat is provided, can cushion the impact that comes from the floor, and the dispersion explosion energy improves the seat guard action, can effectively reduce passenger's injury again.

Realize the utility model discloses the technical solution of purpose does:

a military vehicle rear explosion proof seat, comprising:

a fixed part: the seat frame comprises two rows of rear-row seat mounting beams arranged in parallel and a guide rail fixedly connected to the rear-row seat mounting beams, and is used for fixing the seat frame part;

a movable portion: the seat frame part is used for mounting a seat, and is in sliding connection with the fixed part through the sliding block and the guide rail;

an energy absorber element: and the buffer and energy absorption device is arranged between the fixed part and the movable part and is used for buffering and absorbing energy when explosion occurs.

The fixed part also comprises an upper cross beam, two ends of the upper cross beam are fixedly connected to the rear row seat mounting beam through upper cross beam fixing pieces, an upper energy absorption element connecting piece is fixedly sleeved on the upper cross beam, and the upper end of the energy absorption element is connected with the upper cross beam through the upper energy absorption element connecting piece.

The rear-row seat mounting beam is flat and obliquely mounted, the included angle between the oblique angle and the horizontal direction ranges from 30 degrees to 90 degrees, and a groove is formed in one side, close to the vehicle, of the region where the rear-row seat mounting beam is matched with the guide rail; the guide rail is fixedly arranged on the lower side of the rear seat mounting beam.

Through holes are arranged at the positions, corresponding to the upper crossbeam fixing piece, of the two ends of the upper crossbeam column wall, and through holes are arranged at the positions, corresponding to the upper connecting piece of the energy-absorbing element, of the upper crossbeam column wall; the upper crossbeam fixing piece is a connecting piece with a shaft sleeve and a bottom surface, a reinforcing plate is arranged between the shaft sleeve and the bottom surface, a through hole is formed in the shaft body of the shaft sleeve, and a through hole is formed in the bottom surface; the bottom surface is fixedly connected to the rear row seat mounting beam through bolts, and the distance between the upper beam fixing piece and the top end of the rear row seat mounting beam is determined according to the stroke of the energy absorption element and the length of the rear row seat mounting beam and is 20-40 mm; the through holes on the shaft body of the upper beam fixing part shaft sleeve are opposite to the through holes on the column walls at the two ends of the upper beam and are connected by bolts; the energy-absorbing element upper connecting piece is a unilateral double-vertical-lug type shaft sleeve, a through hole is formed in a shaft body of the shaft sleeve, a through hole is formed in an ear part, the through hole in the shaft body is opposite to the through hole in the middle of the upper cross beam and connected with the through hole through a bolt, and the through hole in the ear part is used for being connected with the upper bolt of the energy-absorbing element.

The seat framework part further comprises a seat pelvis beam, a seat pelvis ring beam and a seat pelvis longitudinal beam, the seat pelvis ring beam is U-shaped, one end of the seat pelvis longitudinal beam is welded with the seat pelvis beam to be T-shaped, the other end of the seat pelvis longitudinal beam is welded with the seat pelvis ring beam, two ends of the seat pelvis beam are respectively welded with the seat pelvis ring beam, an outer framework fixed connecting piece is arranged on the outer side of the seat pelvis ring beam, and the outer framework fixed connecting piece is fixedly connected onto the sliding block through a plurality of sliding block connecting pieces.

The outer framework fixed connecting piece comprises a first connecting rod and a second connecting rod, one end of the first connecting rod and one end of the second connecting rod are welded by 5-60 degrees, the second connecting rod is parallel to the rear row seat mounting beam, the other end of the first connecting rod is fixedly connected with the seat pelvis girth beam through a bolt, and the other end of the second connecting rod is fixedly connected with the seat pelvis girth beam through a bolt.

The sliding block connecting piece is a double-vertical-lug type connecting piece, and the lug part is provided with a through hole and is used for being fixedly connected with the second connecting rod (11); the guide rail is of a double-dovetail type.

The U-shaped opening of the seat pelvis girth is provided with a lower cross beam, the lower cross beam is parallel to the upper cross beam, two ends of the lower cross beam are connected with the inner side of the seat pelvis girth through lower cross beam fixing parts, and the middle part of the lower cross beam is sleeved with an energy absorption element lower connecting piece.

Through holes are formed in the column walls at the positions, corresponding to the lower beam fixing pieces, of the two ends of the lower beam, and through holes are formed in the middle of the lower beam and corresponding to the lower connecting pieces of the energy absorbing elements; the lower connecting piece of the energy-absorbing element is a single-side double-vertical-lug type shaft sleeve, a shaft body of the shaft sleeve is provided with a through hole, a lug part is provided with a through hole, the through hole on the shaft body is opposite to the through hole in the middle of the lower cross beam and is connected with the through hole through a bolt, and the through hole of the lug part is used for being connected with the lower part of the energy-absorbing element through; the lower crossbeam fixing part is a triangular connecting piece with a shaft sleeve, a shaft body of the shaft sleeve is provided with a through hole for being fixedly connected with the lower crossbeam, and the triangular bottom surface is provided with a plurality of through holes for being fixedly connected with the seat pelvis ring beam.

The energy absorbing element is a spring damping energy absorbing element, an air bag buffering element, a hydraulic buffer or a metal winding type energy absorber.

Compared with the prior art, the utility model, it is showing the advantage as follows:

(1) the utility model provides a buffer, energy-absorbing element installation wherein makes the seat receive the impact bounce and the secondary absorbed energy when falling to reduce impact velocity, reduce human injury, better realization energy absorption and energy-absorbing element's used repeatedly.

(2) The utility model provides an explosion-proof seat frame of front seat, the bolt hole on the circle roof beam can realize the quick matching installation of skeleton and different seat cushions, can change the hardware along with the environment, has improved the matching adaptability of seat.

(3) The utility model provides a seat skeleton, connected mode mainly adopt bolted connection, reduce and connect inefficacy, and most be the face contact connection, reduce the stress that receives.

(4) The utility model provides a front seat skeleton realizes the slider installation through the triangle-shaped connecting piece in the outer skeleton both sides of seat, reaches the antitorque effect of bending resistance. The guide rail can limit the seat stroke, and effectively prevents the excessive deformation of the seat.

(5) The utility model provides a seat skeleton roof beam, including circle roof beam, crossbeam and longeron are "T" shape and arrange, can increase seat rigidity, have strengthened the barrier propterty of seat.

(6) The utility model provides a skeleton installation roof beam is the bandlet, and the inclined installation can be realized closely laminating with the automobile body, reduces the space demand.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a military vehicle back row explosion-proof seat frame.

FIG. 2 is a schematic drawing of energy absorption and submergence of a skeleton in an explosive environment.

Figure 3 seat installation schematic.

Fig. 4 is a front view of the seat installation.

Description of reference numerals:

1-upper beam fixing part, 2-lower beam fixing part, 3-seat pelvis beam, 4-seat pelvis girth beam, 5-seat pelvis longitudinal beam, 6-energy-absorbing element upper connecting part, 7-energy-absorbing element, 8-upper beam, 9-rear seat mounting beam, 10-first connecting rod, 11-second connecting rod, 12-lower beam, 13-sliding block, 14-sliding block connecting part, 15-energy-absorbing element lower connecting part, 16-guide rail, 17-fixing part, 18-seat and 19-movable part.

Detailed Description

As shown in figures 1-4, the explosion-proof seat framework for military vehicles comprises a fixed part 17, a movable part 19 and an energy absorption element 7. Wherein the connection of the fixed part 17 to the movable part 19 is effected by the bolted connection of the lower connection 15 of the energy absorber element to the energy absorber element 7 and the engagement of the slider 13 with the guide rail 16. The movable part 19 is guaranteed not to be damaged after the impact of an explosion, so that the energy-absorbing element can be reused.

The explosion-proof seat attachment portion 18 includes an upper beam attachment 1, an energy absorber element upper attachment 6, an upper beam 8, a seat mounting beam 9, and a guide rail 16. The bottom plate of the upper beam fixing part 1 is connected with the two ends of the seat mounting beam 9 and the upper beam 8 through bolts. The middle part of the upper beam 8 is connected with the energy-absorbing element upper connecting piece 6 through a bolt. The rail 16 is mounted on the underside of the seat mounting beam 9 by bolting.

The movable part 19 of the explosion-proof seat comprises a lower cross beam fixing part 2, a seat pelvis cross beam 3, a seat pelvis ring beam 4, a seat pelvis longitudinal beam 5, a second connecting rod 11, a first connecting rod 10, a lower cross beam 12, a sliding block 13, a sliding block connecting part 14 and an energy absorption element lower connecting part 15. The bottom plate of the slide block connecting piece 14 is connected with the slide block 13 through a bolt, and the outer sides of two lugs of the slide block connecting piece 14 are connected with the second connecting rod 11 through a bolt. The upper end of the first connecting rod 10 is welded on the second connecting rod 11, and the lower end is connected with the seat pelvis girth beam 4 through a bolt. The two ends of the lower cross beam 12 are connected with the lower cross beam fixing part 2 through the bolts. The seat pelvis beam 3 and the seat pelvis longitudinal beam 5 are welded into a T shape, and the end sides are welded with the seat pelvis ring beam 3.

The upper end and the lower end of the energy-absorbing element 7 are respectively connected with the upper cross beam 8 and the lower cross beam 12 through bolts. Commonly used energy-absorbing elements include spring-damped energy-absorbing elements, airbag cushioning elements, hydraulic buffers, metal wrap-around energy absorbers, and the like, which are replaceable in seat frame matched applications. The "flexible" connection between the metal wrap-around energy absorber anchor point and the seat provides safety for the occupant, so the metal wrap-around energy absorber element is chosen in this example.

The seat mounting beam 9 is in a flat strip shape, and the back side of the seat mounting beam is provided with a groove, so that deformation is effectively prevented, and the seat mounting beam is tightly attached to a vehicle body to reduce space requirements. The upper beam fixing part 1 establishes surface contact with the upper beam 8, so that unit contact stress is reduced, and beam rigidity is increased. The distance between the mounting point of the fixing element 1 and the upper end of the mounting beam can not be too low, and is determined according to the stroke of the energy-absorbing element and the length of the beam, and the distance is 30mm in the embodiment. The first link 10 plays a role of diagonal support.

Considering the characteristics of large rigidity, light weight, elastic plastic deformation and the like, the beam and the framework part are made of hard aluminum materials. Considering the characteristics of high rigidity and high strength, difficult deformation and the like, the sliding block, the sliding rail and the upper and lower connecting pieces of the energy absorption element are made of steel materials. Wherein, the slide rail slider is symmetrical to distribute, and slide rail slider quantity on one side is more than or equal to 2. The slider is generally used in cooperation with the slider connector.

Different seat cushions are connected with the two sides of the pelvic ring beam 4 of the seat through bolts, so that the seat and the framework can be quickly matched and installed. The mounting holes on the two sides are symmetrically distributed, and the number of the mounting holes on one side is more than or equal to 2 in order to ensure the overall stability. In this example, two bolt mounting holes are selected on each side.

The installation inclination angle of the back row seat framework is determined according to the model of the vehicle body, and the included angle between the installation beam and the horizontal plane is 30-90 degrees. In this example, 60 degrees is used.

When the automobile body receives the explosion impact, the shock wave of vehicle bottom transmits the seat, and outer skeleton fixed connection spare makes movable bottom end rail 12 drive seat outer frame along the slider linear motion along the guide rail as the connecting piece, plays the cushioning effect. While the first link 10 provides some coating at the same time. The energy absorption element 7 generates an energy absorption buffering effect, the speed of the seat framework is reduced, and after energy absorption is completed, the residual energy is transmitted to the upper cross beam and is protected by the rigidity of the upper cross beam. Due to the gravity and the rebound action, the seat falls downwards, the energy absorption element 7 starts the energy absorption action again, the falling speed is reduced, and the falling process is controlled due to the limitation of the travel of the guide rail. The whole energy-absorbing protection process can reduce the injury of passengers and improve the protection performance and reusability of the seat.

Claims

1. A military vehicle back row explosion-proof seat, characterized in that includes:

fixing portion (17): the seat frame comprises two rows of rear-row seat mounting beams (9) arranged in parallel and a guide rail (16) fixedly connected to the rear-row seat mounting beams (9) and used for fixing the seat frame part;

movable portion (19): the seat comprises a seat framework part and a sliding block (13), wherein the seat framework part is used for mounting a seat (18), and the seat framework part is in sliding connection with a fixed part through the sliding block (13) and a guide rail (16);

energy absorber element (7): is arranged between the fixed part (17) and the movable part (19) and is used for buffering and absorbing energy when explosion occurs.

2. The seat according to claim 1, wherein the fixed portion (17) further comprises an upper beam (8), both ends of the upper beam (8) are fixedly connected to the rear seat mounting beam (9) through upper beam fasteners (1), the upper beam (8) is fixedly sleeved with an energy-absorbing element upper connector (6), and the upper end of the energy-absorbing element (7) is connected to the upper beam (8) through the energy-absorbing element upper connector (6).

3. The seat according to claim 2, characterized in that the rear row seat mounting beam (9) is flat and obliquely mounted with an angle of inclination in the range of 30-90 ° to the horizontal, and a groove is provided on the side of the rear row seat mounting beam (9) matching the guide rail (16) near the vehicle; the guide rail (16) is fixedly arranged at the lower side of the rear seat mounting beam (9).

4. Seat according to claim 2, characterized in that the upper beam (8) has through-holes in the wall at both ends in correspondence with the upper beam mounts (1) and in correspondence with the energy absorber upper attachments (6); the upper crossbeam fixing piece (1) is a connecting piece with a shaft sleeve and a bottom surface, a reinforcing plate is arranged between the shaft sleeve and the bottom surface, a through hole is formed in the shaft body of the shaft sleeve, and a through hole is formed in the bottom surface; the bottom surface is fixedly connected to the rear row seat mounting beam (9) through bolts, and the distance between the upper beam fixing piece (1) and the top end of the rear row seat mounting beam (9) is determined according to the stroke of the energy absorption element and the length of the rear row seat mounting beam and is 20-40 mm; the through holes on the shaft body of the shaft sleeve of the upper crossbeam fixing piece (1) are opposite to the through holes on the column walls at the two ends of the upper crossbeam (8) and are connected by bolts; energy-absorbing element is gone up connecting piece (6) and is the two ear formula axle sleeves that stand of unilateral, and the axle sleeve axle sets up the through-hole on one's body, and the ear is equipped with the through-hole, and the through-hole on one's body is relative and bolted connection with the through-hole at entablature (8) middle part, the through-hole of ear is used for the upper portion bolted connection with energy-absorbing element (7).

5. The seat according to claim 1, characterized in that the seat frame part further comprises a seat pelvis beam (3), a seat pelvis ring beam (4) and a seat pelvis longitudinal beam (5), wherein the seat pelvis ring beam (4) is U-shaped, one end of the seat pelvis longitudinal beam (5) is welded with the seat pelvis beam (3) to form a T shape, the other end of the seat pelvis longitudinal beam (5) is welded with the seat pelvis ring beam (4), two ends of the seat pelvis beam (3) are respectively welded with the seat pelvis ring beam (4), an outer frame fixing connector is arranged on the outer side of the seat pelvis ring beam (4), and the outer frame fixing connector is fixedly connected on the sliding block (13) through a plurality of sliding block connectors (14).

6. The seat according to claim 5, characterized in that the outer frame fixed connection piece comprises a first connecting rod (10) and a second connecting rod (11), one end of the first connecting rod (10) and one end of the second connecting rod (11) are welded at an angle of 5-60 degrees, the second connecting rod (11) is arranged in parallel to the rear seat mounting beam (9), the other end of the first connecting rod (10) is fixedly connected with the seat pelvis beam (4) through a bolt, and the other end of the second connecting rod (11) is fixedly connected with the seat pelvis beam (4) through a bolt.

7. Seat according to claim 6, characterized in that said slider connection (14) is a double-eared connection, provided with a through hole for the fixed connection with the second link (11); the guide rail (16) is of a double-dovetail type.

8. The seat according to claim 5, characterized in that a lower cross beam (12) is arranged at the U-shaped opening of the seat pelvis ring beam (4), the lower cross beam (12) is arranged in parallel with the upper cross beam (8), two ends of the lower cross beam (12) are connected with the inner side of the seat pelvis ring beam (4) through lower cross beam fixing pieces (2), and an energy absorption element lower connecting piece (15) is sleeved in the middle of the lower cross beam (12).

9. The seat according to claim 8, characterized in that the column wall of the two ends of the lower beam (12) corresponding to the lower beam fixing part (2) is provided with a through hole, and the middle part of the lower beam (12) corresponding to the lower energy-absorbing element connecting part (15) is provided with a through hole; the energy-absorbing element lower connecting piece (15) is a single-side double-vertical-lug type shaft sleeve, a shaft body of the shaft sleeve is provided with a through hole, the lug part is provided with a through hole, the through hole on the shaft body is opposite to and in bolted connection with the through hole in the middle of the lower cross beam (12), and the through hole of the lug part is used for being in bolted connection with the lower part of the energy-absorbing element (7); the lower crossbeam fixing part (2) is a triangular connecting piece with a shaft sleeve, the shaft body of the shaft sleeve is provided with a through hole for being fixedly connected with the lower crossbeam (12), and the triangular bottom surface is provided with a plurality of through holes for being fixedly connected with the seat pelvis ring beam (4).

10. Seat according to claim 1, characterized in that the energy absorber element (7) is a spring-damped energy absorber element, an airbag cushion element, a hydraulic cushion or a metal-wrap-around energy absorber.