Protective device for intelligent following vehicle

Abstract

The utility model provides a protective device for an intelligent following vehicle. The protective device comprises an anti-collision cross beam, a buffer cross beam, a fixed cross beam, a first energy absorption assembly, a second energy absorption assembly, two connecting plates, two buffer mechanisms and a plurality of collision feedback elements. The anti-collision cross beam is arranged on the outer side end face of the buffering cross beam, and the fixed cross beam is arranged on the inner side of the buffering cross beam and arranged on the side end face of the intelligent following vehicle chassis. The two connecting plates are symmetrically arranged on the bottom end face of the buffering cross beam, one ends of the connecting plates are fixedly connected with the buffering cross beam, and the other ends of the connecting plates are correspondingly provided with the buffering mechanisms which are connected with the bottom end face of the intelligent following vehicle chassis. According to the protection device for the intelligent following vehicle, the problems that the energy absorption effect of the protection device for the intelligent following vehicle in the related technology is poor, impact energy which is not dissipated is directly conducted to the vehicle frame, and consequently the longitudinal beam permanently deforms, and the motor installation base cracks are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to intelligent equipment technical field especially, it is a kind of protective device for intelligent following car. BACKGROUND

[0002] Intelligent following car is the mobile device that target (person or vehicle) is followed automatically by sensor fusion, positioning technology (such as UWB, GPS, radar) and autonomous navigation algorithm.Its core function includes dynamic path planning, obstacle avoidance, speed matching etc., and is widely used in logistics and warehousing, road maintenance, emergency rescue, industrial production etc.Scenario.Intelligent following car chassis is as the core of whole vehicle bearing and power battery carrier, and its protection design is directly related to four key dimensions: guarantee the structural accuracy of transmission system and suspension mechanism under impact, prevent collision from causing battery thermal runaway risk (electrolyte leakage to fire and explosion), avoid precision sensor failure due to vibration, while significantly reduce maintenance cost and downtime loss;Since the energy-absorbing effect of the protective device for intelligent following car in the related art is poor, the impact energy not dissipated is directly transmitted to the frame, causing the longitudinal beam permanent deformation and the motor mounting seat cracking problem. SUMMARY

[0003] Therefore, the utility model aims at solving one of the problems in the related art at least to some extent.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A protective device for intelligent following car, comprising a collision beam, a buffer beam, a fixed beam, a first energy-absorbing component, a second energy-absorbing component, two connecting plates, two buffer mechanisms and a plurality of collision feedback elements;

[0006] The collision beam is arranged on the outer side end surface of the buffer beam, the fixed beam is arranged on the inner side of the buffer beam, and the fixed beam is arranged on the side end surface of the intelligent following car chassis.

[0007] The two connecting plates are symmetrically arranged on the bottom end surface of the buffer beam, one end of the connecting plate is fixedly connected with the buffer beam, and the other end of the connecting plate is correspondingly provided with one buffer mechanism, and the buffer mechanism is connected with the bottom end surface of the intelligent following car chassis.

[0008] The first energy-absorbing component is arranged between the collision beam and the buffer beam, and the second energy-absorbing component is arranged between the buffer beam and the fixed beam.

[0009] A plurality of collision feedback elements are arranged between the second energy-absorbing component and the buffer mechanism, and the collision feedback elements are connected with the control unit of the intelligent following car.

[0010] Further, the second energy-absorbing assembly comprises a honeycomb aluminum core plate, a low-density silica gel layer and a plurality of high-density rubber blocks, one side of the honeycomb aluminum core plate is provided with the low-density silica gel layer, the other side of the honeycomb aluminum core plate is provided with the high-density rubber blocks, the plurality of high-density rubber blocks are uniformly arranged between the honeycomb aluminum core plate and the buffer cross beam, the end of the honeycomb aluminum core plate is connected with the fixed cross beam through a screw, and the second energy-absorbing assembly has the same structure as the first energy-absorbing assembly.

[0011] Further, the number of the high-density rubber blocks is 8-10.

[0012] Further, the anti-collision cross beam has an arch structure, and the end of the anti-collision cross beam is connected with the buffer cross beam through two connecting bolts.

[0013] Further, the buffer mechanism comprises a guide slide, a mounting plate and an elastic buffer assembly, the end of the connecting plate is provided with a bent edge, the elastic buffer assembly is arranged in the guide slide, one end of the elastic buffer assembly is connected with the bent edge, the other end of the elastic buffer assembly is connected with the guide slide, and the upper end surface side of the guide slide is connected with the bottom end surface of the intelligent following vehicle chassis through the mounting plate.

[0014] Further, the elastic buffer assembly comprises a slide rod, a buffer spring, a nut and a limiting block, one end of the slide rod is in sliding fit with the guide slide, the other end of the slide rod penetrates through the nut and is connected with the bent edge, the buffer spring is arranged on the slide rod, one end of the buffer spring abuts against the bent edge, the other end of the buffer spring abuts against the guide slide, and the end of the slide rod away from the bent edge is provided with the limiting block.

[0015] Further, the collision feedback element is a piezoelectric film sensor.

[0016] Compared with the prior art, the protective device for the intelligent following vehicle has the following advantages:

[0017] 1. The energy-absorbing assembly is composed of a three-layer structure of a low-density silica gel layer, a honeycomb aluminum core plate and a high-density rubber block array, and can gradually absorb and disperse the collision impact energy. The low-density silica gel layer preferentially softens high-frequency vibration, the honeycomb aluminum core is buckled and collapsed through the hole wall to convert kinetic energy, and the rubber block array uniformly disperses residual stress. The strength of the impact transmitted to the vehicle body is significantly reduced, and the key components of the chassis are protected from damage.

[0018] 2. The high-density rubber block array forms a multi-point support network in the energy-absorbing assembly, and the elastic buffer assembly cooperates to uniformly absorb and convert the collision energy into elastic potential energy. The guide slide and the slide rod structure ensure that the impact force is released in a linear direction, avoiding the vehicle body from being inclined or tilted, and ensuring that the vehicle can still maintain a stable posture after being hit.

[0019] 3、The connection of the honeycomb aluminum core plate member and the fixed cross beam, the energy absorbing assembly adopts a detachable design of screw connection, the damaged energy absorbing assembly can be replaced independently, and the whole vehicle structure does not need to be disassembled. Further, the maintenance time can be greatly shortened, the system downtime period caused by impact can be reduced, and the efficient reuse of the equipment can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and its description are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0021] Figure 1 A protective device for an intelligent following vehicle according to an embodiment of the present application is shown in the schematic view.

[0022] Figure 2 The protective device according to an embodiment of the present application is shown in the top view.

[0023] Figure 3 The connecting plate structure according to an embodiment of the present application is shown in the schematic view.

[0024] Figure 4 The buffer mechanism structure according to an embodiment of the present application is shown in the schematic view.

[0025] Figure 5 The second energy absorbing assembly structure according to an embodiment of the present application is shown in the schematic view.

[0026] Explanation of reference signs:

[0027] 100, anti-collision cross beam; 200, first energy absorbing assembly; 300, second energy absorbing assembly; 310, low-density silica gel layer; 320, honeycomb aluminum core plate member; 330, high-density rubber block; 340, collision feedback element; 400, buffer cross beam; 500, fixed cross beam; 600, buffer mechanism; 610, guide carriage; 620, buffer spring; 630, mounting plate; 700, connecting plate; 710, bent edge. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0029] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0030] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0031] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0032] A kind of guard device for intelligent following car, as shown in Figure 1 It includes crash beam 100, buffer crossbeam 400, fixed beam 500, first energy-absorbing component 200, second energy-absorbing component 300, two connecting plates 700, two buffer mechanisms 600 and multiple collision feedback elements 340;Crash beam 100 is arranged at the outer side end surface of buffer crossbeam 400, fixed beam 500 is arranged at the inner side of buffer crossbeam 400, and fixed beam 500 is arranged at the side end surface of intelligent following car chassis;Two connecting plates 700 are symmetrically arranged at the bottom end surface of buffer crossbeam 400, one end of connecting plate 700 is welded with buffer crossbeam 400, and the other end of connecting plate 700 is correspondingly provided with one buffer mechanism 600, and buffer mechanism 600 is connected with the bottom end surface of intelligent following car chassis;Crash beam 100 is arched structure, and the end of crash beam 100 is connected with buffer crossbeam 400 by two connecting bolts.

[0033] The first energy-absorbing component 200 is disposed between the anti-collision crossbeam 100 and the buffer crossbeam 400, and the second energy-absorbing component 300 is disposed between the buffer crossbeam 400 and the fixed crossbeam 500; multiple collision feedback elements 340 are arranged between the second energy-absorbing component 300 and the buffer crossbeam, and the collision feedback elements 340 are connected to the control unit of the intelligent following vehicle. Figure 5 As shown, the second energy-absorbing component 300 includes a honeycomb aluminum core panel 320, a low-density silicone layer 310, and multiple high-density rubber blocks 330. The low-density silicone layer 310 is disposed on one side of the honeycomb aluminum core panel 320, and the high-density rubber blocks 330 are disposed on the other side. The multiple high-density rubber blocks 330 are evenly arranged between the honeycomb aluminum core panel 320 and the buffer beam 400. The end of the honeycomb aluminum core panel 320 is connected to the fixed beam 500 by screws. The second energy-absorbing component 300 has the same structure as the first energy-absorbing component 200. In this example, the number of high-density rubber blocks 330 is 8-10. The collision feedback element 340 is a piezoelectric thin-film sensor.

[0034] The energy-absorbing component, through a three-layer structure consisting of a low-density silicone layer 310, a honeycomb aluminum core panel 320, and a high-density rubber block array 330, can absorb and disperse impact energy in stages. The low-density silicone layer 310 preferentially softens high-frequency vibrations, the honeycomb aluminum core converts kinetic energy through buckling and collapse of the pore walls, and the rubber block array uniformly disperses residual stress. This significantly reduces the intensity of the impact transmitted to the vehicle body, protecting critical chassis components from damage.

[0035] The high-density rubber block array 330 forms a multi-point support network in the energy-absorbing component. Combined with the synergistic effect of the elastic buffer component, the collision energy is uniformly absorbed and converted into elastic potential energy. The guide carriage 610 and the slide bar structure ensure that the impact force is released in a linear direction, avoiding vehicle body tilting or rolling, and ensuring that the vehicle can maintain a stable posture after a collision.

[0036] like Figure 4 As shown, the buffer mechanism 600 includes a guide slide 610, a mounting plate 630, and an elastic buffer assembly. The end of the connecting plate 700 is provided with a bent edge 710. The elastic buffer assembly is disposed inside the guide slide 610. One end of the elastic buffer assembly is connected to the bent edge 710, and the other end of the elastic buffer assembly is connected to the guide slide 610. The upper end face of the guide slide 610 is connected to the bottom end face of the intelligent following vehicle chassis through the mounting plate 630.

[0037] The elastic buffer assembly includes a slide rod, a buffer spring 620, a nut, and a limiting block. One end of the slide rod is slidably engaged with the guide slide 610, and the other end of the slide rod passes through the nut and is connected to the bent edge 710. The buffer spring 620 is mounted on the slide rod, with one end of the buffer spring 620 abutting against the bent edge 710 and the other end of the buffer spring 620 abutting against the guide slide 610. A limiting block is provided at the end of the slide rod away from the bent edge 710.

[0038] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A guard for an intelligent following vehicle, characterized by: The anti-collision cross beam (100), the buffer cross beam (400), the fixed cross beam (500), the first energy absorption assembly (200), the second energy absorption assembly (300), two connecting plates (700), two buffer mechanisms (600) and a plurality of collision feedback elements (340) are included. The anti-collision cross beam (100) is arranged on the outer side end surface of the buffer cross beam (400), and the fixed cross beam (500) is arranged on the inner side of the buffer cross beam (400). The two connecting plates (700) are symmetrically arranged on the bottom end surface of the buffer cross beam (400), one end of the connecting plate (700) is fixedly connected with the buffer cross beam (400), and the other end of the connecting plate (700) is correspondingly provided with the buffer mechanism (600). The first energy absorption assembly (200) is arranged between the anti-collision cross beam (100) and the buffer cross beam (400), and the second energy absorption assembly (300) is arranged between the buffer cross beam (400) and the fixed cross beam (500). A plurality of collision feedback elements (340) are arranged between the second energy absorption assembly (300) and the buffer cross beam (400), and the collision feedback element (340) is connected with the control unit of the intelligent following vehicle.

2. A guard for an intelligent following vehicle according to claim 1, characterised in that: The second energy absorption assembly (300) includes a honeycomb aluminum core plate (320), a low-density silica gel layer (310) and a plurality of high-density rubber blocks (330), one side of the honeycomb aluminum core plate (320) is provided with the low-density silica gel layer (310), the other side of the honeycomb aluminum core plate (320) is provided with the high-density rubber block (330), a plurality of high-density rubber blocks (330) are uniformly arranged between the honeycomb aluminum core plate (320) and the buffer cross beam (400), and the end of the honeycomb aluminum core plate (320) is connected with the fixed cross beam (500) through screws.

3. A guard for an intelligent following vehicle according to claim 2, characterised in that: The number of high-density rubber blocks (330) is 8-10.

4. A guard for an intelligent following vehicle according to any one of claims 1 to 3, characterised in that: The anti-collision cross beam (100) is an arch structure, and the end of the anti-collision cross beam (100) is connected with the buffer cross beam (400) through two connecting bolts.

5. A guard for an intelligent following vehicle according to claim 4, characterised in that: The buffer mechanism (600) includes a guide carriage (610), a mounting plate (630) and an elastic buffer assembly, the end of the connecting plate (700) is provided with a bent edge (710), the elastic buffer assembly is arranged in the guide carriage (610), one end of the elastic buffer assembly is connected with the bent edge (710), the other end of the elastic buffer assembly is connected with the guide carriage (610), and the upper end surface side of the guide carriage (610) is connected with the bottom end surface of the intelligent following vehicle chassis through the mounting plate (630).

6. A guard for an intelligent following vehicle according to claim 5, characterised in that: The elastic buffering assembly comprises a sliding rod, a buffering spring (620), a nut and a limiting block, one end of the sliding rod is in sliding fit with the guide sliding frame (610), the other end of the sliding rod penetrates through the nut and is connected with the bent edge (710), the buffering spring (620) is arranged on the sliding rod, one end of the buffering spring (620) abuts against the bent edge (710), the other end of the buffering spring (620) abuts against the guide sliding frame (610), and the limiting block is arranged at the end of the sliding rod away from the bent edge (710).

7. A guard for an intelligent following vehicle as claimed in claim 4, wherein: The collision feedback element (340) is a piezoelectric film sensor.

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