Thread shearing type guiding anti-collision pad and guiding anti-collision method

Abstract

The invention discloses a thread shearing type guiding anti-collision pad and a guiding anti-collision method, and relates to the field of road traffic safety facilities. The thread shearing type guiding anti-collision pad comprises a fixed assembly, a first movable assembly is arranged on one side of the fixed assembly, and a plurality of second movable assemblies are arranged between the first movable assembly and the fixed assembly; the nose end is arranged on the side, away from the second movable assemblies, of the first movable assembly, the energy absorption assembly is arranged between the nose end and the fixed assembly and connected with the second movable assemblies, and the guide assembly is arranged between the first movable assembly and the fixed assembly and connected with the second movable assemblies. Under the collision of a high-speed running vehicle, the kinetic energy of the vehicle can be absorbed and dissipated in time, the damage degree of an accident is fully reduced, sufficient protection is provided for the vehicle and personnel, and the device can be repeatedly used after the collision, so that the protection cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of road traffic safety facilities, in particular to a thread shearing type steerable anti-collision pad and a steerable anti-collision method. Background Art

[0002] Crash pads are a key line of defense for road traffic safety, effectively cushioning impacts and protecting vehicles and personnel during collisions. However, existing crash pads use a single energy-absorbing method. Some simple crash pads rely solely on ordinary elastic materials for cushioning, resulting in insufficient energy absorption capacity. When impacted by a high-speed vehicle, they are unable to absorb and dissipate the vehicle's kinetic energy in a timely manner, thus failing to fully mitigate the severity of the accident and provide adequate protection for vehicles and personnel. Furthermore, most crash pads suffer severe internal damage after a collision, making repair difficult and often difficult to reuse. This poor reusability leads to a waste of resources, prolonged maintenance time, and low maintenance efficiency, which in turn increases protection costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a threaded shear-type steerable anti-collision pad and a steerable anti-collision method, which can absorb and dissipate the kinetic energy of the vehicle in a timely manner when it is hit by a high-speed vehicle, fully reduce the degree of harm caused by the accident, provide sufficient protection for the vehicle and personnel, and can be reused after the collision, thereby reducing the protection cost.

[0004] The above-mentioned optimized structure of the present invention is achieved by the following technical solutions: A threaded shearing type steerable crash pad includes a fixing assembly; a first movable component, the first movable component being arranged on one side of the fixed component; a plurality of second movable components, wherein the plurality of second movable components are arranged between the first movable component and the fixed component; a nose tip, the nose tip being located on a side of the first movable component away from the second movable component; an energy absorbing component, the energy absorbing component being disposed between the nose end and the fixed component and connected to the plurality of second movable components; A guide assembly is provided between the first movable assembly and the fixed assembly, and is connected to a plurality of the second movable assemblies.

[0005] In some embodiments, the fixing assembly includes a fixing plate, and the fixing plate is fixed on the ground; a fixing frame, the fixing frame being fixed on the fixing plate; At least two fixing rods, the two fixing rods are symmetrically arranged at both ends of the fixing plate and fixed on the ground; At least two fixed guard plates are fixedly connected to the fixing rod, and one end of the fixed guard plate is connected to the fixing frame.

[0006] In some embodiments, the first movable component includes a first movable frame, the first movable frame is fixedly connected to the nose end, and the energy absorbing component is connected between the first movable frame and the fixed frame; At least two first movable guard plates are symmetrically arranged at two ends of the first movable frame and connected to the second movable component.

[0007] In some embodiments, the second movable component includes a second movable frame, and the second movable frame is disposed between the first movable frame and the fixed frame; A second movable guard plate, one end of which is fixedly connected to the second movable frame, and is arranged between the fixed guard plate and the first movable guard plate.

[0008] In some embodiments, the energy absorbing assembly includes at least two energy absorbing units, and the two energy absorbing units are symmetrically arranged between the fixed frame and the first movable frame; The energy absorbing unit includes a fixed sleeve, and the fixed sleeve is arranged on a side of the first movable frame close to the second movable frame; a through hole, the through hole passing through the fixed frame and the second movable frame; Threaded sleeves, the threaded sleeves being provided on both side surfaces of the second movable frame and on a side surface of the fixed frame close to the second movable frame; A rotating screw, one end of which is rotatably disposed in the fixed sleeve and the other end of which is threadedly engaged with the threaded sleeve; An energy-absorbing screw, both ends of which are threadedly connected to the threaded sleeve.

[0009] In some embodiments, the energy absorbing assembly further includes an energy absorbing groove, and the energy absorbing groove is provided on the fixed guard plate, the first dynamic guard plate, and the second dynamic guard plate; An energy absorbing bolt is provided between the fixed guard plate and the second dynamic guard plate, between the second dynamic guard plate and the second dynamic guard plate, between the first dynamic guard plate and the second dynamic guard plate, and between the first dynamic guard plate and the second dynamic guard plate, and the energy absorbing bolt can slide in the energy absorbing groove.

[0010] In some embodiments, the energy absorbing assembly further includes a protective member, which is disposed between the fixing sleeve and the threaded sleeve, or between two threaded sleeves; The protective member includes a first fixing portion, and the first fixing portion is coaxially arranged with the threaded sleeve; a first movable groove, the first movable groove being provided on the first fixing portion; a movable portion, the movable portion being slidably disposed in the first movable groove; a second movable groove, the second movable groove being provided on the movable portion; a second fixing portion, the second fixing portion being slidably disposed in the second movable groove and being coaxially arranged with the fixing sleeve or the threaded sleeve; A buffer spring is provided between the first movable groove and the movable portion, and between the second movable groove and the second fixed portion.

[0011] In some embodiments, the protective member further includes two first protective blocks, the two first protective blocks are symmetrically arranged on the inner wall of the first movable groove, and the first protective blocks pass through the movable portion and the second fixed portion; Two second protective blocks are symmetrically arranged on the inner wall of the second movable groove and pass through the second fixed part. The two first protective blocks, the two second protective blocks and the second fixed part form a protective ring sleeve, and the protective ring sleeve is loosely matched with the rotating screw and the energy absorbing screw.

[0012] In some embodiments, the guide assembly includes a guide plate, and the guide plate is fixed on the ground; a guide hole, the guide hole passing through the fixed frame, the first movable frame, and the second movable frame; Two guide ropes, one end of each guide rope is hinged to the guide plate, and the other end is fixedly connected to the fixing plate, and the guide rope passes through the guide hole.

[0013] A guided collision avoidance method includes the following steps: when a vehicle collides with an anti-collision pad, the impact force of the vehicle is transmitted to a first movable component and a second movable component through the nose end, and the first movable component and the second movable component move together toward a fixed component; During this process, the rotating screw between the first movable component and the second movable component advances axially and shears the internal thread of the threaded sleeve, and then advances axially in sequence and withdraws from the last threaded sleeve, thereby absorbing and dissipating the impact force of the vehicle, thereby protecting the vehicle; At the same time, the second fixed part slides in the second movable groove, and the movable part slides in the first movable groove, squeezing the buffer spring to deform, reducing the impact force on the rotating screw, and providing protection for the rotating screw during the axial advancement of the rotating screw through the first protective block, the second protective block and the second fixed part to avoid deformation of the rotating screw during the axial advancement of the rotating screw, thereby realizing the reuse of the rotating screw.

[0014] One or more of the above technical solutions in the embodiments of the present invention have at least the following technical effects or advantages: The present invention can convert the impact force of the vehicle into energy dissipation by shearing the threads between the rotating screw, the energy-absorbing screw and the threaded sleeve. It also combines the friction energy absorption between the energy-absorbing bolt and the energy-absorbing groove and the buffer energy absorption of the buffer spring to form a multiple energy-absorbing and dissipating structure, thereby effectively absorbing and dissipating the impact force of the vehicle and reducing the damage to the vehicle and personnel caused by the accident. The guide rope in the guide assembly can guide the direction of travel of the vehicle, prevent the vehicle from losing control after a collision, and improve traffic safety performance. A protective member is provided in the energy-absorbing assembly to protect and guide the thread shearing process between the rotating screw, the energy-absorbing screw and the threaded sleeve, so that after the threaded sleeve is sheared, the rotating screw and the energy-absorbing screw can still maintain good performance. The anti-collision pad can be reused by simply replacing the threaded sleeve, reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a cross-sectional view showing the connection between the energy absorbing assembly and the fixed frame, the first movable frame and the second movable frame in embodiment 1 of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 It is a structural schematic diagram of the fixed guard plate of the present invention; Figure 5 It is a structural diagram of the first movable frame of the present invention; Figure 6 This is a cross-sectional view showing the connection between the energy absorbing assembly, the fixed frame, the first movable frame and the second movable frame in accordance with embodiment 2 of the present invention; Figure 7 Schematic diagram of the structure of the protective member according to the present invention.

[0016] In the figure: 1. Fixed assembly; 11. Fixed plate; 12. Fixed frame; 13. Fixed rod; 14. Fixed guard plate; 2. First movable assembly; 21. First movable frame; 22. First dynamic guard plate; 3. Second movable assembly; 31. Second movable frame; 32. Second dynamic guard plate; 4. Nose end; 5. Energy absorbing assembly; 51. Fixed sleeve; 52. Through hole; 53. Threaded sleeve; 54. Energy absorbing groove; 55. Protective member; 551. First fixed part; 552. First movable groove; 553. Movable part; 554. Second movable groove; 555. Second fixed part; 556. Buffer spring; 557. First protective block; 558. Second protective block; 56. Rotating screw; 57. Energy absorbing screw; 6. Guide assembly; 61. Guide plate; 62. Guide hole; 63. Guide rope. DETAILED DESCRIPTION

[0017] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0018] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0020] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0021] Example 1: refer to Figure 1-5 A threaded shearing type steerable crash pad comprises a fixed component 1, a first movable component 2, a plurality of second movable components 3, a nose end 4, an energy absorbing component 5, and a guide component 6. The fixed component 1 serves as the basic fixed part of the entire crash pad and provides a reference for installation and support of other components. The first movable component 2 is arranged on one side of the fixed component 1 and is connected to the nose end 4. It can first receive the impact force and generate displacement when the vehicle collides. The plurality of second movable components 3 are arranged between the first movable component 2 and the fixed component 1 to play the role of transition and transmission of impact force. At the same time, they are connected to the energy absorbing component 5 and the guide component 6 to enable each component to work together. The nose end 4 is arranged at The first movable component 2 is away from the side of the second movable component 3, and the nose end 4 is the part that directly bears the impact of the vehicle, which transmits the impact force to the first movable component 2, thereby triggering the energy absorption and guiding action of the entire anti-collision pad. The nose end 4 can increase the force-bearing area and preliminarily reduce the impact force of the vehicle. The energy absorption component 5 is arranged between the nose end 4 and the fixed component 1 and is connected to multiple second movable components 3. It can absorb and dissipate the impact force during the vehicle collision to protect the vehicle. The guide component 6 is arranged between the first movable component 2 and the fixed component 1 and is connected to multiple second movable components 3 to guide the vehicle's driving direction during the vehicle collision to prevent the vehicle from losing control.

[0022] In some embodiments, the fixing component 1 includes a fixing plate 11, a fixing frame 12, at least two fixing rods 13, and at least two fixed guard plates 14. The fixing plate 11 is fixed on the ground to provide a stable foundation. The fixing frame 12 is fixed on the fixing plate 11 to provide an installation framework and position reference for other components. The fixing frame 12 can be welded by channel steel. The two fixing rods 13 are symmetrically arranged at both ends of the fixing plate 11 and fixed on the ground, which can increase the fixed connection points between the fixing component 1 and the ground and enhance the stability and impact resistance of the fixing component 1. The fixed guard plate 14 is fixedly connected to the fixing rod 13, and one end of the fixed guard plate 14 is connected to the fixing frame 12. It not only plays a protective role, but also cooperates with other components to participate in the energy absorption and guidance process.

[0023] In some embodiments, the first movable component 2 includes a first movable frame 21 and at least two first dynamic guard plates 22. The first movable frame 21 is fixedly connected to the nose end 4 and can directly receive the impact force from the nose end 4. An energy absorption component 5 is connected between the first movable frame 21 and the fixed frame 12, which can transmit and dissipate the impact force. The two first dynamic guard plates 22 are symmetrically arranged at both ends of the first movable frame 21 and are connected to the second movable component 3. When the vehicle collides, they work together with other guard plates to protect internal components and participate in the energy absorption process. In some embodiments, the second movable component 3 includes a second movable frame 31 and a second dynamic guard plate 32. The second movable frame 31 is arranged between the first movable frame 21 and the fixed frame 12, and plays a role of connection and transition. It transmits the movement of the first movable component 2 to the fixed component 1, and cooperates with the energy absorption component 5 and the guide component 6. One end of the second dynamic guard plate 32 is fixedly connected to the second movable frame 31 and is arranged between the fixed guard plate 14 and the first dynamic guard plate 22. When the vehicle collides, it bears and transmits the impact force together with other guard plates, while protecting the internal structure. In some embodiments, reference Figure 5 The fixed frame 12, the first movable frame 21 and the second movable frame 31 have the same structure, and the overall shape can be trapezoidal when viewed from a top view, which can disperse the front impact force to the side and improve the overall protection performance of the anti-collision pad.

[0024] In some embodiments, reference Figure 4 The fixed guard plate 14, the first dynamic guard plate 22, and the second dynamic guard plate 32 have the same structure and can all be three-corrugated guard plates, which can improve the structural strength of the fixed guard plate 14, the first dynamic guard plate 22, and the second dynamic guard plate 32, thereby improving the overall structural strength of the anti-collision pad, and the fixed guard plate 14, the first dynamic guard plate 22, and the second dynamic guard plate 32 are overlapped end to end along the collision direction, so that the fixed guard plate 14, the first dynamic guard plate 22, and the second dynamic guard plate 32 can slide forward in turn, follow the forward direction of the vehicle, and avoid the protrusions at the ends of the guard plates causing damage to the colliding vehicle.

[0025] In some embodiments, the energy absorbing assembly 5 includes at least two energy absorbing units, which are symmetrically arranged between the fixed frame 12 and the first movable frame 21. The energy absorbing unit includes a fixed sleeve 51, a through hole 52, a threaded sleeve 53, a rotating screw 56, and an energy absorbing screw 57. The fixed sleeve 51 is arranged on the side of the first movable frame 21 close to the second movable frame 31 and can be welded and fixed. The through hole 52 passes through the fixed frame 12 and the second movable frame 31 and is coaxially arranged with the fixed sleeve 51. The threaded sleeve 53 is arranged on both sides of the second movable frame 31 and on a side of the fixed frame 12 close to the second movable frame 31, and can be welded and fixed. The hole 52 is coaxially arranged, and one end of the rotating screw 56 can be rotatably arranged in the fixed sleeve 51. A limiting ring can be provided at the end of the rotating screw 56, and a rotating groove can be provided in the fixed sleeve 51. The limiting ring can rotate in the rotating groove, thereby realizing the rotational connection between the rotating screw 56 and the fixed sleeve 51. The other end of the rotating screw 56 is threadedly matched with the threaded sleeve 53, and both ends of the energy-absorbing screw 57 are threadedly connected to the threaded sleeve 53; the external thread strength of the rotating screw 56 and the energy-absorbing screw 57 can be greater than the internal thread strength of the threaded sleeve 53, so that the threaded sleeve 53 can be replaced after being sheared, so that the anti-collision pad as a whole can be reused.

[0026] When the vehicle hits the nose 4, the impact force is transmitted to the first movable frame 21, causing it to move toward the fixed frame 12. At this time, the rotating screw 56, with one end fixed in the fixed sleeve 51 and the other end threadedly connected to the threaded sleeve 53, is axially advanced relative to the threaded sleeve 53 as the first movable frame 21 moves. During the advancement process, the rotating screw 56 shears the internal threads of the threaded sleeve 53, passing through multiple threaded sleeves 53 in sequence, converting the impact force of the vehicle into energy dissipation through thread shearing, thereby achieving an energy absorption function. During this process, when the rotating screw 56 passes through the threaded sleeves 53, it impacts the energy absorbing screw 57 between two threaded sleeves 53, thereby driving the energy absorbing screw 57 to shear the internal threads of the threaded sleeves 53, passing through multiple threaded sleeves 53 in sequence, and exiting from the last threaded sleeve 53, further dissipating the impact force of the vehicle.

[0027] In some embodiments, the energy absorption assembly 5 further includes an energy absorption groove 54 and an energy absorption bolt. The energy absorption groove 54 is provided on the fixed guard plate 14, the first dynamic guard plate 22, and the second dynamic guard plate 32. The energy absorption bolt is provided between the fixed guard plate 14 and the second dynamic guard plate 32, between the second dynamic guard plate 32 and the second dynamic guard plate 32, and between the first dynamic guard plate 22 and the second dynamic guard plate 32. The energy absorption bolt can slide in the energy absorption groove 54. During a vehicle collision, relative displacement will occur between the guard plates. The energy absorption bolt slides in the energy absorption groove 54. On the one hand, it allows relative movement between the guard plates to accommodate the transmission and deformation of the impact force. On the other hand, the friction between the energy absorption bolt and the energy absorption groove 54 will also consume part of the impact force, further enhancing the energy absorption effect. In some embodiments, the guide assembly 6 includes a guide plate 61, a guide hole 62, and two guide ropes 63. The guide plate 61 can be anchored to the ground by anchor bolts. The guide hole 62 passes through the fixed frame 12, the first movable frame 21, and the second movable frame 31 to form a structure connected in series. One end of the guide rope 63 is hinged to the guide plate 61, and the other end is fixedly connected to the fixed plate 11. The guide rope 63 passes through the guide hole 62. The guide rope 63 can be a steel wire rope.

[0028] When a vehicle strikes the crash cushion, the first movable frame 21 and the second movable frame 31 move toward the fixed frame 12. At this point, the guide rope 63, with one end fixed to the fixed plate 11 and the other end hinged to the guide plate 61 and extending through the guide hole 62, provides lateral support for the crash cushion as a whole, restricting the movement of the first movable frame 21 and the second movable frame 31 so that they move along the direction of the guide rope 63. This guides the vehicle's direction of travel, prevents loss of control, and improves the crash cushion's guiding performance.

[0029] A guided collision avoidance method includes the following steps: when a vehicle collides with an anti-collision pad, the vehicle directly collides with the nose end 4 of the anti-collision pad, and the impact force of the vehicle is first transmitted to the first movable frame 21 of the first movable component 2 through the nose end 4. Under the action of the impact force, the first movable frame 21 moves toward the fixed frame 12 of the fixed component 1, and at the same time drives the second movable frame 31 of the second movable component 3 connected thereto to move.

[0030] During the movement, the energy-absorbing assembly 5 begins to operate. The rotating screw 56, with one end secured within the fixed sleeve 51 of the first movable frame 21 and the other end threadedly engaged with the threaded sleeve 53 on the second movable frame 31 and the fixed frame 12, advances axially relative to the threaded sleeve 53 as the first movable frame 21 moves, shearing the internal threads of the sleeve 53. This shearing process converts the impact force of the vehicle into energy dissipation, absorbing and dissipating the impact and thus protecting the vehicle. During the axial advancement of the rotating screw 56, it will collide with the energy-absorbing screw 57 threadedly connected to the threaded sleeve 53. The energy-absorbing screw 57 will be axially advanced relative to the threaded sleeve 53 under the action of the impact force, and shear the internal thread of the threaded sleeve 53, and advance axially in sequence. When the collision force is greater than the sum of the shear force of the sheared thread and the friction force between the shear surface, it will continue to advance the shear until the force is balanced, thereby further absorbing and dissipating the impact force of the vehicle and protecting the vehicle. The energy-absorbing screw 57 will withdraw from the last threaded sleeve 53, converting the impact force of the vehicle into kinetic energy of the energy-absorbing screw 57, thereby realizing the absorption and dissipation of the impact force of the vehicle and protecting the vehicle.

[0031] At the same time, the first dynamic guard plate 22 will follow the first movable frame 21 to move toward the fixed frame 12 of the fixed component 1, and the second dynamic guard plate 32 will follow the second movable frame 31 to move toward the fixed frame 12 of the fixed component 1, thereby causing the energy absorbing bolt in the energy absorbing component 5 to slide in the energy absorbing groove 54, and the friction between the energy absorbing bolt and the energy absorbing groove 54 will also consume part of the impact force.

[0032] By rotating the screw 56, the energy-absorbing screw 57 and the threaded sleeve 53 to shear the threads, the impact force of the vehicle can be converted into energy for dissipation, and combined with the friction energy absorption of the energy-absorbing bolt and the energy-absorbing groove 54, a multiple energy-absorbing and dissipating structure is formed, thereby effectively absorbing and dissipating the impact force of the vehicle, reducing the damage to the vehicle and personnel caused by the accident, and withdrawing the energy-absorbing screw 57 from the threaded sleeve 53, converting the impact force of the vehicle into kinetic energy of the energy-absorbing screw 57, reducing the loss of thread shear between the energy-absorbing screw 57 and the threaded sleeve 53, so that it can be reused.

[0033] During the entire collision process, the guide rope 63 of the guide assembly 6 is hinged with the guide plate 61 and passes through the guide hole 62 of the fixed frame 12, the first movable frame 21, and the second movable frame 31, thereby limiting the movement direction of the first movable frame 21 and the second movable frame 31, guiding the driving direction of the vehicle and preventing the vehicle from losing control.

[0034] Example 2: refer to Figure 6-7 The difference between this embodiment and embodiment 1 is that: The energy absorbing assembly 5 also includes a protective member 55, which is arranged between the fixed sleeve 51 and the threaded sleeve 53, and between the two threaded sleeves 53. The protective member 55 can provide protection during the process of rotating the screw 56 and the energy absorbing screw 57 shearing the internal thread of the threaded sleeve 53. Specifically, the protective member 55 includes a first fixed portion 551, a first movable groove 552, a movable portion 553, a second movable groove 554, a second fixed portion 555, and a buffer spring 556. The first fixed portion 551 is coaxially arranged with the threaded sleeve 53 and is sleeved on the outside of the threaded sleeve 53. , can be welded and fixed, the first movable groove 552 is provided on the first fixed part 551, the movable part 553 can be slidably provided in the first movable groove 552, the second movable groove 554 is provided on the movable part 553, the second fixed part 555 can be slidably provided in the second movable groove 554, and is coaxially arranged with the fixed sleeve 51 or the threaded sleeve 53, can be sleeved on the outside of the fixed sleeve 51 or the threaded sleeve 53, can be welded and fixed, the buffer spring 556 is provided between the first movable groove 552 and the movable part 553, and between the second movable groove 554 and the second fixed part 555.

[0035] When rotating screw 56 is axially advanced, it exerts a significant impact force on threaded sleeve 53. The movable portion 553 of protective member 55 slides within first movable groove 552, while the second fixed portion 555 slides within second movable groove 554, simultaneously squeezing and deforming buffer spring 556. The deformation of buffer spring 556 absorbs and cushions some of the impact force, reducing the impact force on rotating screw 56 and energy-absorbing screw 57. This protects rotating screw 56 and energy-absorbing screw 57 from deformation due to excessive force during axial advancement, enabling their reuse.

[0036] In some embodiments, the protective member 55 also includes two first protective blocks 557 and two second protective blocks 558. The two first protective blocks 557 are symmetrically arranged on the inner wall of the first movable groove 552, and the first protective blocks 557 pass through the movable part 553 and the second fixed part 555. The two second protective blocks 558 are symmetrically arranged on the inner wall of the second movable groove 554 and pass through the second fixed part 555. The two first protective blocks 557, the two second protective blocks 558 and the second fixed part 555 form a protective ring sleeve, and the protective ring sleeve is clearance-matched with the rotating screw 56 and the energy-absorbing screw 57.

[0037] During the axial advancement of the rotating screw 56, the first protective block 557, the second protective block 558 and the second fixed portion 555 can always maintain the protection of the rotating screw 56 and the energy absorbing screw 57. At the same time, through the plug-in cooperation between the second fixed portion 555 and the movable portion 553, and the plug-in cooperation between the movable portion 553 and the first fixed portion 551, the two first protective blocks 557, the two second protective blocks 558 and the second fixed portion 555 can form a protective ring sleeve, and the protective ring sleeve is clearance-matched with the rotating screw 56 and the energy absorbing screw 57, thereby guiding the rotating screw 56 and the energy absorbing screw 57, ensuring that the rotating screw 56 and the energy absorbing screw 57 are advanced on the correct path, and preventing the rotating screw 56 and the energy absorbing screw 57 from deflecting, shaking or deforming during the advancement process, further improving the stability and service life of the rotating screw 56 and the energy absorbing screw 57, and realizing the reuse of the rotating screw 56 and the energy absorbing screw 57.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A threaded shearing type guideable crash pad, characterized by: including a fixing assembly (1); A first movable component (2), the first movable component (2) being arranged on one side of the fixed component (1); a plurality of second movable components (3), wherein the plurality of second movable components (3) are arranged between the first movable component (2) and the fixed component (1); A nose tip (4), the nose tip (4) being arranged on a side of the first movable component (2) away from the second movable component (3); An energy absorbing component (5), the energy absorbing component (5) being arranged between the nose end (4) and the fixed component (1), and being connected to a plurality of the second movable components (3); A guide assembly (6), wherein the guide assembly (6) is arranged between the first movable assembly (2) and the fixed assembly (1), and is connected to a plurality of the second movable assemblies (3).

2. The threaded shearing steerable crash pad according to claim 1, characterized in that: The fixing assembly (1) comprises a fixing plate (11), and the fixing plate (11) is fixed on the ground; A fixed frame (12), the fixed frame (12) being fixed on the fixed plate (11); At least two fixing rods (13), the two fixing rods (13) being symmetrically arranged at both ends of the fixing plate (11) and fixed on the ground; At least two fixed guard plates (14), wherein the fixed guard plates (14) are fixedly connected to the fixing rods (13), and one end of the fixed guard plates (14) is connected to the fixing frame (12).

3. The threaded shearing steerable crash pad according to claim 2, characterized in that: The first movable component (2) comprises a first movable frame (21), the first movable frame (21) is fixedly connected to the nose end (4), and the energy absorbing component (5) is connected between the first movable frame (21) and the fixed frame (12); At least two first movable guard plates (22), the two first movable guard plates (22) are symmetrically arranged at two ends of the first movable frame (21) and connected to the second movable component (3).

4. The threaded shearing steerable crash pad according to claim 3, characterized in that: The second movable component (3) comprises a second movable frame (31), and the second movable frame (31) is arranged between the first movable frame (21) and the fixed frame (12); A second movable guard plate (32), one end of which is fixedly connected to the second movable frame (31), and is disposed between the fixed guard plate (14) and the first movable guard plate (22).

5. The threaded shearing steerable crash pad according to claim 4, characterized in that: The energy absorbing assembly (5) comprises at least two energy absorbing units, and the two energy absorbing units are symmetrically arranged between the fixed frame (12) and the first movable frame (21); The energy absorption unit comprises a fixed sleeve (51), and the fixed sleeve (51) is arranged on a side of the first movable frame (21) close to the second movable frame (31); a through hole (52), the through hole (52) passing through the fixed frame (12) and the second movable frame (31); A threaded sleeve (53), the threaded sleeve (53) being arranged on two side surfaces of the second movable frame (31) and a side surface of the fixed frame (12) close to the second movable frame (31); A rotating screw rod (56), one end of which is rotatably disposed in the fixed sleeve (51) and the other end of which is threadedly engaged with the threaded sleeve (53); An energy-absorbing screw (57), both ends of which are threadedly connected to the threaded sleeve (53).

6. The threaded shearing steerable crash pad according to claim 5, characterized in that: The energy absorption assembly (5) further includes an energy absorption groove (54), and the energy absorption groove (54) is provided on the fixed guard plate (14), the first dynamic guard plate (22), and the second dynamic guard plate (32); An energy absorbing bolt is provided between the fixed guard plate (14) and the second dynamic guard plate (32), between the second dynamic guard plate (32) and the second dynamic guard plate (32), between the first dynamic guard plate (22), and the second dynamic guard plate (32), and the energy absorbing bolt can slide in the energy absorbing groove (54).

7. The threaded shearing steerable crash pad according to claim 5, characterized in that: The energy absorbing assembly (5) further comprises a protective member (55), wherein the protective member (55) is arranged between the fixed sleeve (51) and the threaded sleeve (53), and between two threaded sleeves (53); The protective member (55) comprises a first fixing portion (551), and the first fixing portion (551) is coaxially arranged with the threaded sleeve (53); a first movable groove (552), the first movable groove (552) being provided on the first fixing portion (551); a movable portion (553), the movable portion (553) being slidably disposed in the first movable groove (552); a second movable groove (554), the second movable groove (554) being provided on the movable portion (553); a second fixing portion (555), the second fixing portion (555) being slidably disposed in the second movable groove (554) and being coaxially disposed with the fixing sleeve (51) or the threaded sleeve (53); A buffer spring (556) is provided between the first movable groove (552) and the movable portion (553), and between the second movable groove (554) and the second fixed portion (555).

8. The threaded shearing steerable crash pad according to claim 7, characterized in that: The protective member (55) further comprises two first protective blocks (557), the two first protective blocks (557) being symmetrically arranged on the inner wall of the first movable groove (552), and the first protective blocks (557) passing through the movable portion (553) and the second fixed portion (555); Two second protection blocks (558), the two second protection blocks (558) are symmetrically arranged on the inner wall of the second movable groove (554) and pass through the second fixing portion (555), the two first protection blocks (557), the two second protection blocks (558) and the second fixing portion (555) form a protection ring sleeve, and the protection ring sleeve is clearance-matched with the rotating screw (56) and the energy-absorbing screw (57).

9. The threaded shearing steerable crash pad according to claim 4, characterized in that: The guide assembly (6) comprises a guide plate (61), and the guide plate (61) is fixed on the ground; a guide hole (62), the guide hole (62) passing through the fixed frame (12), the first movable frame (21), and the second movable frame (31); Two guide ropes (63), one end of each guide rope (63) is hinged to the guide plate (61), and the other end is fixedly connected to the fixed plate (11), and the guide rope (63) passes through the guide hole (62).

10. A guided anti-collision method, using a threaded shearing type steerable anti-collision pad according to any one of claims 1 to 9, characterized in that: The following steps are involved: When a vehicle collides with the crash pad, the impact force of the vehicle is transmitted to the first movable component (2) and the second movable component (3) through the nose end (4), and the first movable component (2) and the second movable component (3) move together toward the fixed component (1); During this process, the rotating screw (56) between the first movable component (2) and the second movable component (3) is axially advanced and shears the internal thread of the threaded sleeve (53), and is sequentially axially advanced and withdrawn from the last threaded sleeve (53), thereby absorbing and dissipating the impact force of the vehicle, thereby protecting the vehicle; At the same time, the second fixed portion (555) slides in the second movable groove (554), and the movable portion (553) slides in the first movable groove (552), squeezing the buffer spring (556) to deform, thereby reducing the impact force on the rotating screw (56). In addition, the first protective block (557), the second protective block (558) and the second fixed portion (555) provide protection for the rotating screw (56) during the axial advancement of the rotating screw (56), thereby avoiding deformation of the rotating screw (56) during the axial advancement, thereby realizing the reuse of the rotating screw (56).

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