CN114562531B - Collapsible type vehicle bottom explosion protection unidirectional damper - Google Patents
Collapsible type vehicle bottom explosion protection unidirectional damper Download PDFInfo
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- CN114562531B CN114562531B CN202210212034.1A CN202210212034A CN114562531B CN 114562531 B CN114562531 B CN 114562531B CN 202210212034 A CN202210212034 A CN 202210212034A CN 114562531 B CN114562531 B CN 114562531B
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- vehicle body
- bearing device
- inclined rail
- vehicle
- protection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/003—One-shot shock absorbers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention relates to a collapsible vehicle bottom explosion protection unidirectional damper. The device comprises a vehicle body supporting device connected with a vehicle body, a protective component supporting device connected with a protective component at the bottom of the vehicle body, a conical annular clamping cone and a crumple ring, wherein the thickness of the conical annular clamping cone is unchanged from bottom to top and gradually increases; the protective component bearing device body is arranged in the vehicle body bearing device body, an inclined track is formed between the protective component bearing device body and the vehicle body bearing device body, and a crumple ring is arranged between the upper part of the protective component bearing device and the vehicle body bearing device; the movement speed of the explosion instant protection component is higher than that of the vehicle body, the shearing pin is sheared, and the clamping cone is clamped into the inclined track and is clamped at the same time of the collapse ring; the explosion is transferred to the car body, the movement speed of the car body is higher than that of the bottom protection assembly, the car body drives the protection assembly to move, and the equivalent mass of the car body is increased. The invention reduces the acceleration of the vehicle body and the passengers in the first stage, effectively protects the passengers, and realizes the effective protection of the passengers in the second stage.
Description
Technical Field
The invention belongs to the field of vehicle protection, and particularly relates to a collapsible vehicle bottom explosion protection unidirectional damper.
Background
The main threat faced by the special vehicles in the battlefield at present is represented by the impact generated by the explosion of explosives such as TNT on the bottom of the vehicles. The special vehicle enters a thunder area or other areas with pre-buried explosives in a battlefield, and the explosion of the explosives can instantly transmit shock waves to the bottom of the special vehicle, so that the bottom of the vehicle is obviously deformed and extremely high acceleration is transmitted to impact passengers in the vehicle body to cause injury to the passengers.
Aiming at the threat brought by the bottom explosion event of the vehicle, most of current researches adopt a mode of additionally installing bottom protection armor to improve the passenger protection capability of the vehicle in the bottom explosion event, the main forms of the bottom protection armor at present are V-shaped, honeycomb sandwich panel type and the like, and the addition of the bottom protection assembly improves the protection capability of the armored vehicle to a certain extent.
The protection principle of the protection assembly is that protection can be realized only in the initial stage of impact, a subsequent vehicle can be exploded off the ground, the protection assembly does not play a role, but when explosion shock waves explode the vehicle off the ground, the protection armor, the vehicle body and passengers can have higher acceleration (10 g-20 g) at the same time, and different explosive amounts are slightly different from the acceleration of the vehicle; the acceleration at this time still causes fracture of the pelvis and cervical vertebra, tearing of viscera, rupture of blood vessels, etc. of the occupant, and in addition, syncope or shock of the occupant due to insufficient blood supply may be caused. This is also a very serious injury to the occupant. Therefore, it is extremely necessary to control acceleration generated in the vehicle when the vehicle is exploded off the ground to the vehicle body and the occupant within a certain range, and further improve the safety performance to the occupant.
Disclosure of Invention
The invention aims to provide a collapsible unidirectional damper for bearing explosion-proof armor at the bottom of a vehicle and a vehicle body.
The technical solution for realizing the purpose of the invention is as follows: a collapsible type vehicle bottom explosion protection unidirectional damper comprises a vehicle body supporting device connected with a vehicle body, a protection component supporting device connected with a protection component at the bottom of the vehicle body, a conical annular clamping cone and a collapse ring, wherein the thickness of the conical annular clamping cone is unchanged from bottom to top and then gradually increases;
the protective component supporting device body is arranged in the vehicle body supporting device body, an inclined track is formed between the protective component supporting device body and the vehicle body supporting device body, and a crumple ring is arranged between the upper part of the protective component supporting device and the vehicle body supporting device body;
the moving speed of the protective component is higher than that of the vehicle body at the moment of explosion, the shearing pin shears off, the protective component bearing device and the vehicle body bearing device relatively move, the clamping cone is clamped into the inclined track and is clamped at the same time of the collapse ring, and the protective component bearing device continuously extrudes towards the vehicle body bearing device;
when the explosion shock wave is transmitted to the vehicle body, the movement speed of the vehicle body is higher than that of the bottom protection assembly, the vehicle body drives the bottom protection assembly which is blocked by the armor bearing device and the vehicle body bearing device to move, and the equivalent mass of the vehicle body is increased.
Further, the vehicle body bearing device comprises a top seat and an external inclined rail;
the top seat is connected with the vehicle body, the whole annular enveloping body of outside inclined rail, the top seat sets up in outside inclined rail upper portion, and the shape of outside inclined rail inside cavity is two sections big-end-up's frustum, and the lower part diameter of upper segment frustum is greater than the upper portion diameter of lower segment frustum, and a plurality of through-holes that supply the shear pin to pass are evenly distributed to outside inclined rail outer peripheral face.
Further, the top seat is connected with the vehicle body through a bolt, or the top seat is welded with the vehicle body.
Further, the top seat and the external inclined rail are made of high-strength steel.
Further, the protective component bearing device comprises an inner inclined rail and a lower end bearing boss which are integrally arranged;
the lower end bearing boss is connected with the bottom protection component, the appearance of the inner inclined rail is in a frustum shape with a large diameter and a small diameter, and a plurality of through holes matched with the through holes of the outer inclined rail and used for the cutting pins to pass through are uniformly distributed on the side wall of the inner inclined rail.
Further, the inner inclined rail and the lower end bearing boss are made of high-strength steel.
Further, the lower end bearing boss is connected with the protective component through a bolt or welded with the protective component.
Further, the collapse ring is arranged between the inner inclined rail and the top seat, the collapse ring is fixedly connected with the upper part of the inner inclined rail, and the yield limit of the collapse ring is between 0.5 and 5 Mpa.
Further, the material of the crumple ring is honeycomb aluminum.
A vehicle includes a body, an underbody guard assembly, and a plurality of the above-described unidirectional dampers uniformly disposed between the body and the underbody guard assembly.
Compared with the prior art, the invention has the remarkable advantages that:
(1) According to the invention, the unidirectional damper is arranged between the bottom protective armor of the vehicle and the vehicle body, when the explosion shock wave in the first stage is transmitted to the bottom protective armor of the vehicle, the armor bearing device is extruded to the vehicle body bearing device, and the collapse ring is extruded to the top seat to collapse; the relative motion between the armor bearing device and the vehicle body bearing device is buffered, the acceleration of the vehicle body and the passengers in the first stage is reduced, and the passengers are effectively protected.
(2) The clamping cone and the inner inclined rail can form a mechanical structure capable of moving unidirectionally and locking reversely; when the explosion shock wave of the second stage is transmitted to the vehicle body, the movement speed of the vehicle body is faster than that of the bottom armor, the vehicle body drives the bottom protective armor to move, and the armor bearing device and the vehicle body bearing device have opposite movement tendency; but the clamping cone and the inner inclined rail are combined to enable the armor bearing device and the vehicle body bearing device to be mutually clamped, the equivalent mass of the vehicle body is increased, the acceleration of the vehicle body and the acceleration of passengers are further reduced, and the effective protection of the passengers in the second stage is realized.
(3) In the device, the armor bearing device is connected with the vehicle body bearing device through the shearing pin, and the shearing pin is sheared only under the ultra-strong impact such as explosion and the like to trigger the unidirectional damper; when the vehicle is in a normal working condition, the shearing pin is not sheared, and the armor bearing device is in rigid connection with the vehicle body bearing device, so that the normal work of the vehicle is not affected.
(4) All structures in the device are mechanical structures, strong heat and strong electromagnetic interference generated by explosion is extremely small, the response speed is high, and effective protection of passengers can be realized in a first stage and a second stage after the vehicle is exploded.
Drawings
FIG. 1 is a three-dimensional view of a unidirectional damper of the present invention; wherein (a) is from the bottom up view and (b) is from the top down view.
Fig. 2 is a three-dimensional schematic view of the vehicle body-receiving device.
Fig. 3 is a three-dimensional schematic view of a guard assembly receiving device.
FIG. 4 is a schematic view of a card cone structure; wherein (a) is a three-dimensional view and (b) is a cross-sectional view.
Fig. 5 is a three-dimensional schematic view of a shear pin.
Fig. 6 is a schematic view of an installation position of the unidirectional damper.
FIG. 7 is a view of a one-way damper for vehicle body guard installation
FIG. 8 is a schematic cross-sectional view of a one-way damper.
Reference numerals illustrate:
the device comprises a 1-top seat, a 2-outer inclined rail, a 3-collapse ring, a 4-inner inclined rail, a 5-lower end bearing boss, a 6-clamping cone, a 7-shearing pin, an 8-vehicle body, a 9-protection component, a 10-vehicle body bearing device, a 11-protection component bearing device and a 12-unidirectional damper.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1-8, a collapsible unidirectional damper for receiving explosion-proof armor at the bottom of a vehicle and a vehicle body comprises a protective component receiving device 11, a vehicle body receiving device 10, a clamping cone 6 and a shearing pin 7;
the lower end supporting boss 5 at the lower end of the protective component supporting device 11 is connected with the protective component 9, and the crumple ring 3 at the top end is extruded, crumpled and absorbed energy for buffering; the upper end top seat 1 of the vehicle body supporting device 10 is connected with the vehicle body 8, and the outer inclined rail 2 at the lower part, the inner inclined rail 4 at the middle part of the protective component supporting device 11 and the clamping cone 6 form a mechanical structure which moves unidirectionally and is locked reversely; the shear pin 7 is inserted into the inner inclined rail and the outer inclined rail to serve as a trigger switch of strong explosion impact, and when the vehicle is subjected to explosion, the shear pin 7 is sheared by extremely large shock waves so that the whole unidirectional damping device starts to work.
As shown in fig. 1, a collapsible vehicle bottom explosion protection one-way damper includes a body receiving device 10, a protection component receiving device 11, a clip 6, and a shear pin 7.
As shown in fig. 2, the vehicle body supporting device comprises a top seat 1 for supporting a vehicle body, and an external inclined rail 2 for realizing unidirectional movement and reverse locking;
the materials of the vehicle body bearing devices are high-strength steel;
the vehicle body bearing device is an axisymmetric annular enveloping body;
the outer inclined rail 2 is in the shape of an inner cavity and is in the shape of a frustum with a large inner diameter at the upper end and a small inner diameter at the lower end, the outer side of the outer inclined rail is a cylindrical surface, the inner side of the outer inclined rail is a conical inclined rail surface, and the inner side of the outer inclined rail is matched with the outer side of the clamping cone 6;
the upper part of the top seat 1 is used for bearing a vehicle body, the two parts can be connected through bolts or welded, and the lower part of the top seat 1 is used for extruding a crumple ring 3 in the protective component bearing device to crumple, buffer and absorb energy so as to reduce the acceleration of the vehicle body 8 and achieve the purpose of protecting members.
As shown in fig. 3, the protective component bearing device 11 comprises a lower end bearing boss 5 for bearing the protective component 9, an inner inclined rail 4 for realizing unidirectional movement and reverse locking, and a crumple ring 3 for crumple buffering and energy absorbing;
the lower end bearing boss 5 and the inner inclined rail 4 are made of high-strength steel; the material of the crumple ring 3 is steel with lower yield strength or aluminum material, preferably honeycomb aluminum;
the protection component bearing device 11 is an axisymmetric annular enveloping body; the diameter of the device is smaller than that of the vehicle body supporting device 10, the device is positioned at the inner side of the vehicle body supporting device 10, and the clamping cone 6 is clamped and fixed between the device;
the outer peripheral surface of the inner inclined rail 4 is in a frustum shape with a large outer diameter at the upper end and a small outer diameter at the lower end, the inner side of the inner inclined rail is in a hollow cylinder shape, the outer side of the inner inclined rail is in a conical inclined rail surface, and the outer side of the inner inclined rail is matched with the inner side surface of the clamping cone 6;
the collapse ring 3 is connected with the inner inclined rail 4 through welding, the inner inclined rail 4 is integrated with the lower end bearing boss 5, the lower end bearing boss 5 can be used for bearing armor, and the inner inclined rail 4 and the lower end bearing boss 5 can be connected through bolts or welding.
As shown in fig. 4, the clamping cone 6 is a conical ring with a large diameter at the upper end and a small diameter at the lower end, the thickness of the conical ring from bottom to top is unchanged and then increases, and the inner side surface and the outer side surface of the clamping cone are conical inclined rail surfaces;
the clamping cone 6 is made of high-strength steel;
the inner side surface and the outer side surface of the clamping cone 6 are respectively contacted with the inner inclined rail 4 and the outer inclined rail 2.
As shown in fig. 5, the shear pin 7 is a cylinder and is installed in the pin holes of the inner inclined rail 4 and the outer inclined rail 2;
the material of the shear pins 7 is high-strength steel, and the number of the shear pins 7 is 6.
As shown in fig. 6, in the present embodiment, the roof base of the vehicle body receiving apparatus faces the vehicle body without an inclination angle;
when the special vehicle normally runs without being impacted by explosion, the shearing pin 7 is inserted into the pin holes of the inner inclined rail and the outer inclined rail, the vehicle is not impacted greatly, the shearing pin 7 is not sheared, and the unidirectional damper does not work;
when the explosion instantaneously transmits larger impact and extremely large acceleration to the bottom protection component 9, the movement speed of the bottom protection component 9 is faster than that of the vehicle body 8, the shearing pin 7 is sheared, and large-displacement relative movement is carried out between the protection component bearing device 9 and the vehicle body 8 bearing device; the axial distance between the inner inclined rail 4 and the outer inclined rail 2 is increased, and the clamping cone 6 is clamped deeper into the rail due to the action of gravity and is blocked, but the relative movement of the protective component bearing device and the vehicle body bearing device in opposite directions is not blocked, and the movement of the protective component bearing device and the vehicle body bearing device in opposite directions is blocked; the protective component bearing device is extruded to the vehicle body bearing device, and the collapse ring 3 extrudes the top seat to collapse; so that the relative movement between the protective component bearing device and the vehicle body bearing device is buffered;
when the explosion transmits larger impact and extremely large acceleration to the vehicle body 8, the movement speed of the vehicle body 8 is faster than that of the bottom armor 9, the vehicle body drives the bottom protective armor to move, and the protective component bearing device and the vehicle body bearing device have opposite movement tendency; because the clamping cone 6 is clamped with the inner inclined rail 4 and the outer inclined rail 2, the protective component bearing device and the vehicle body bearing device are mutually clamped, the equivalent mass of the vehicle body 8 is increased, and the acceleration of the vehicle body 8 and passengers in the vehicle body is further reduced to a safe range.
Claims (9)
1. The collapsible type vehicle bottom explosion protection unidirectional damper is characterized by comprising a vehicle body supporting device (10) connected with a vehicle body (8), a protection component supporting device (11) connected with a protection component (9) at the vehicle bottom, a conical annular clamping cone (6) and a collapse ring (3), wherein the thickness of the conical annular clamping cone is unchanged from bottom to top and gradually increases;
the protection component supporting device (11) is arranged in the body supporting device (10) and forms an inclined track between the protection component supporting device and the body supporting device, and a crumple ring (3) is arranged between the upper part of the protection component supporting device (11) and the body supporting device (10);
the moving speed of the protective component (9) is higher than that of the vehicle body (8) at the moment of explosion, the shearing pin (7) shears, the protective component bearing device (11) and the vehicle body bearing device (10) move relatively, the clamping cone (6) is clamped into the inclined track and is clamped at the same time of the collapse ring (3), and the protective component bearing device continues to be extruded to the vehicle body bearing device;
when the explosion shock wave is transmitted to the vehicle body (8), the movement speed of the vehicle body (8) is higher than that of the bottom protection assembly (9), the vehicle body (8) drives the bottom protection assembly (9) which is blocked with the armor bearing device and the vehicle body bearing device to move, and the equivalent mass of the vehicle body (8) is increased;
the vehicle body receiving device comprises a top seat (1) and an external inclined rail (2);
the footstock (1) is connected with the automobile body (8), and outside inclined rail (2) are whole to be cyclic annular envelope body, and footstock (1) set up in outside inclined rail (2) upper portion, and the shape of outside inclined rail (2) inside cavity is two sections big-end-up's frustum, and the lower part diameter of upper segment frustum is greater than the upper portion diameter of lower segment frustum, and a plurality of through-holes that supply shear pin (7) to pass of outer peripheral face equipartition of outside inclined rail (2).
2. A unidirectional damper as claimed in claim 1, characterized in that the top seat (1) is connected to the vehicle body (8) by means of bolts, or the top seat (1) and the vehicle body (8) are welded.
3. A unidirectional damper as claimed in claim 2, characterized in that the material of the top seat (1) and the outer ramp (2) is high-strength steel.
4. A unidirectional damper as claimed in claim 3, wherein said guard assembly receiving means comprises an integrally provided internal ramp (4) and lower end receiving boss (5);
the lower end bearing boss (5) is connected with the bottom protection assembly (9), the appearance of the inner inclined rail (4) is in a frustum shape with a large diameter from top to bottom, and a plurality of through holes matched with the through holes of the outer inclined rail (2) and used for the cutting pins (7) to pass through are uniformly distributed on the side wall of the inner inclined rail (4).
5. A unidirectional damper as claimed in claim 4, characterized in that the inner ramp (4) and the lower end abutment boss (5) are made of high-strength steel.
6. A unidirectional damper as claimed in claim 4, wherein the lower end bearing boss (5) is connected to the guard assembly by means of bolts or welded thereto.
7. A unidirectional damper as claimed in claim 4 wherein the crush ring (3) is disposed between the inner ramp (4) and the top seat (1), the crush ring (3) being fixedly connected to the upper portion of the inner ramp (4), the crush ring (3) having a yield limit of between 0.5 and 5 Mpa.
8. A unidirectional damper as claimed in claim 7 wherein the crush ring (3) is of cellular aluminium.
9. A vehicle characterized by comprising a body (8), an under-guard assembly (9) and a plurality of unidirectional dampers as claimed in any one of claims 1-8 uniformly disposed between the body (8) and the under-guard assembly (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210212034.1A CN114562531B (en) | 2022-03-04 | 2022-03-04 | Collapsible type vehicle bottom explosion protection unidirectional damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210212034.1A CN114562531B (en) | 2022-03-04 | 2022-03-04 | Collapsible type vehicle bottom explosion protection unidirectional damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114562531A CN114562531A (en) | 2022-05-31 |
| CN114562531B true CN114562531B (en) | 2023-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210212034.1A Active CN114562531B (en) | 2022-03-04 | 2022-03-04 | Collapsible type vehicle bottom explosion protection unidirectional damper |
Country Status (1)
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| CN (1) | CN114562531B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB860691A (en) * | 1958-03-25 | 1961-02-08 | Thompson Nuclear Energy Co Ltd | Improvements relating to shock absorbing devices |
| US4026125A (en) * | 1975-07-10 | 1977-05-31 | Patterson James T | Flexible drive adapter |
| CN202381616U (en) * | 2011-12-15 | 2012-08-15 | 陈亦乐 | One-way damper |
| CN204784370U (en) * | 2015-06-14 | 2015-11-18 | 中国电子科技集团公司第十研究所 | Toper restraint damping shock absorber |
| CN206555339U (en) * | 2017-03-02 | 2017-10-13 | 华侨大学 | A kind of embedded energy absorption device |
| CN207129021U (en) * | 2017-09-08 | 2018-03-23 | 北京汽车研究总院有限公司 | A kind of lighting protection plate and lightning protection car |
| CN111306166A (en) * | 2020-03-23 | 2020-06-19 | 陈正祖 | Single-head automatic locking type connecting assembly |
| CN111609068A (en) * | 2020-05-15 | 2020-09-01 | 张柱 | Device for slowing down collision force |
| CN112964132A (en) * | 2021-02-20 | 2021-06-15 | 青岛理工大学 | Special-shaped energy-consumption composite anti-explosion protective armor with flame retardant property and preparation method thereof |
-
2022
- 2022-03-04 CN CN202210212034.1A patent/CN114562531B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB860691A (en) * | 1958-03-25 | 1961-02-08 | Thompson Nuclear Energy Co Ltd | Improvements relating to shock absorbing devices |
| US4026125A (en) * | 1975-07-10 | 1977-05-31 | Patterson James T | Flexible drive adapter |
| CN202381616U (en) * | 2011-12-15 | 2012-08-15 | 陈亦乐 | One-way damper |
| CN204784370U (en) * | 2015-06-14 | 2015-11-18 | 中国电子科技集团公司第十研究所 | Toper restraint damping shock absorber |
| CN206555339U (en) * | 2017-03-02 | 2017-10-13 | 华侨大学 | A kind of embedded energy absorption device |
| CN207129021U (en) * | 2017-09-08 | 2018-03-23 | 北京汽车研究总院有限公司 | A kind of lighting protection plate and lightning protection car |
| CN111306166A (en) * | 2020-03-23 | 2020-06-19 | 陈正祖 | Single-head automatic locking type connecting assembly |
| CN111609068A (en) * | 2020-05-15 | 2020-09-01 | 张柱 | Device for slowing down collision force |
| CN112964132A (en) * | 2021-02-20 | 2021-06-15 | 青岛理工大学 | Special-shaped energy-consumption composite anti-explosion protective armor with flame retardant property and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN114562531A (en) | 2022-05-31 |
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