CN212807625U - Novel unmanned test dolly - Google Patents

Novel unmanned test dolly Download PDF

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Publication number
CN212807625U
CN212807625U CN202021639047.XU CN202021639047U CN212807625U CN 212807625 U CN212807625 U CN 212807625U CN 202021639047 U CN202021639047 U CN 202021639047U CN 212807625 U CN212807625 U CN 212807625U
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CN
China
Prior art keywords
chassis
protective housing
test
protective
protective shell
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Expired - Fee Related
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CN202021639047.XU
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Chinese (zh)
Inventor
邓文彬
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Huile Automotive Technology Shanghai Co ltd
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Huile Automotive Technology Shanghai Co ltd
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Priority to CN202021639047.XU priority Critical patent/CN212807625U/en
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Publication of CN212807625U publication Critical patent/CN212807625U/en
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Abstract

The utility model relates to an automatic drive safety test technical field provides a novel unmanned test dolly, including chassis, wheel and the protective housing of setting on the chassis, the chassis includes preceding chassis and back chassis, and preceding chassis and back chassis all rotate the setting on the protective housing, all set up the support elastic component between protective housing and preceding chassis, protective housing and back chassis. Through above-mentioned technical scheme, the problem that test dolly stability among the prior art can not have with the effect of rolling is prevented simultaneously.

Description

Novel unmanned test dolly
Technical Field
The utility model relates to an automatic driving safety test technical field, it is concrete relates to a novel unmanned test dolly.
Background
With the rapid development and application of computer technology, especially the application of artificial intelligence to automobiles, the realization of automatic driving of automobiles is promoted to be possible. The application of the automatic driving automobile is more and more extensive, and the automatic driving automobile becomes a brand new direction of future automobiles. The safety of the autonomous driving vehicle is a concern, and since the control right of the autonomous driving is completely controlled by the vehicle-mounted computer in some cases, the safety of the autonomous driving vehicle needs to be fully verified, or the reliability of the autonomous driving vehicle needs to be fully verified.
The test trolley for automatic driving is a common device in the safety test of the automatic driving automobile, bears models of people, self-weighing automobiles, motorcycles and automobiles for testing through the test trolley and drives the models to move so as to simulate the actual situation on the road, and the test trolley needs to have a lower height to conveniently bear the models, thereby reducing the influence of the test trolley and needing better rolling resistance, and reducing the possibility of damaging internal devices when being collided and rolled by the unmanned automobile.
What test trolley's prevent rolling structure adopted among the prior art usually is through four guide pillars connection protective housing and chassis to the spring play the supporting role is established to the cover on the guide pillar, but this kind of structure has following problem: when the gap between the guide pillars is large, the protective shell is not firmly fixed, and the protective shell is easy to shake during movement; when the guide post clearance is little, need satisfy four guide posts and descend simultaneously when the car rolls and just can play the effect of preventing rolling, slope then can block slightly, damages wheel and internals, has between stable in structure and the effect of preventing rolling and has got or not can hold concurrently.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel unmanned test dolly has solved the test dolly stability among the prior art and has prevented the problem that the effect can not be obtained concurrently that rolls. The technical scheme of the utility model as follows:
the utility model provides a novel unmanned test dolly, is in including chassis, setting wheel on the chassis is in with the setting protective housing on the chassis, the chassis includes preceding chassis and back chassis, preceding chassis with the back chassis all rotates the setting and is in on the protective housing, the protective housing with between preceding chassis the protective housing with all set up the support elastic component between the back chassis.
Furthermore, the protective shell further comprises a supporting rod, one end of the supporting rod is arranged on the inner wall of the protective shell, the other end of the supporting rod is arranged on the chassis in a sliding mode and limited through a limiting nut, and the supporting elastic piece is sleeved on the supporting rod.
Further, the protective case includes: the front chassis and the rear chassis are rotatably arranged on the side surfaces.
Further, the inner wall of the protective shell is provided with a plurality of reinforcing ribs.
Further, the inner wall of the protective shell is provided with a plurality of supporting columns.
Further, still include the components and parts mounting box, set up the inner wall of protective housing.
Furthermore, a steering device is also arranged on the front chassis.
Further, an antenna opening is formed in the protective shell.
The utility model discloses a theory of operation and beneficial effect do:
the utility model discloses in, a novel unmanned test dolly, chassis adopt split type design, divide into preceding chassis and back chassis, rotate between preceding chassis and protective housing to be connected, also adopt between back chassis and protective housing to rotate to be connected to all be provided with between protective housing and preceding chassis, protective housing and back chassis and support the elastic component, all be equipped with the wheel in the front on chassis and the back chassis.
In the use process of the test trolley, the wheels are in contact with the ground, so that a gap exists between the protective shell and the ground, and the test trolley is driven to move forwards and backwards through the rotation of the wheels. The protective housing has the freedom degree of up-and-down movement in the plane and rotation of the plane, when the middle part of the protective housing is rolled, the protective housing moves downwards to the lower edge of the protective housing to be contacted with the ground, when one side of the protective housing is rolled, the protective housing inclines to the side, and the side edge lands to protect the internal components and parts and play a role of rolling prevention.
Adopt above-mentioned scheme can enough guarantee the stability of protective housing installation, also can provide the good effect of preventing rolling, can avoid the jamming phenomenon that appears easily among the prior art moreover, also can reduce the atress of wheel through the position of adjustment support elastic component simultaneously, reduce the impaired probability of wheel.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the inner wall of the protective case;
FIG. 3 is a schematic view of an outer wall structure of the protective case;
FIG. 4 is a schematic structural view of a front chassis;
FIG. 5 is an enlarged view of a portion of FIG. 1 at A;
FIG. 6 is an exploded view of the test car;
FIG. 7 is a schematic view of a two-dimensional mechanism of a test cart;
FIG. 8 is a schematic view of the protective shell in contact with the ground;
FIG. 9 is a schematic view of the left side of the protective case in contact with the ground;
FIG. 10 is a schematic view of the right side of the protective case in contact with the ground;
FIG. 11 is a schematic view of a two-dimensional mechanism of the test carriage after springs are added;
FIG. 12 is a schematic view of a two-dimensional mechanism of a prior art test cart;
in the figure: the navigation antenna comprises a protective shell 1, a top surface 11, a lateral surface 12, a reinforcing rib 13, a supporting column 14, an antenna opening 15, a front chassis 2, a rear chassis 3, wheels 4, a supporting elastic part 51, a supporting rod 52, a limiting nut 53, a component mounting box 6, a steering device 7 and a navigation antenna 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work, are related to the scope of the present invention.
As shown in fig. 1 to 6, the present embodiment proposes a novel unmanned test vehicle,
including the chassis, set up wheel 4 on the chassis and set up protective housing 1 on the chassis, the chassis includes preceding chassis 2 and back chassis 3, and preceding chassis 2 all rotates with back chassis 3 and sets up in protective housing 1, all sets up between protective housing 1 and preceding chassis 2, the 1 body of protective housing and back chassis 3 and supports elastic component 51.
The front chassis 2 and the rear chassis 3 are respectively provided with wheels 4, the front chassis 2 and the rear chassis 3 are rotatably connected with the protective shell 1, supporting elastic pieces 51 are arranged between the protective shell 1 and the front chassis 2 and between the protective shell 1 and the rear chassis 3, the wheels 4 are always in contact with the ground in the rotating process and drive the test trolley to advance and retreat, a gap is formed between the protective shell 1 and the ground, the protective shell 1 and the ground are in split design by adopting the front chassis 2 and the rear chassis 3 and are rotatably arranged with the protective shell 1 and are respectively supported by the supporting elastic pieces 51, so that the protective shell 1 has the freedom degree of moving up and down and rotating around a horizontal axis, when the protective shell 1 is rolled, the protective shell 1 moves down or rotates around the horizontal axis, the edge of the protective shell 1 is in contact with the ground, the rolling prevention effect is achieved, the supporting elastic pieces 51 can play a buffering role and improve the rolling prevention effect, adopt above-mentioned design can enough guarantee the stability of the installation of protective housing 1, also can effectually guarantee to prevent the effect that rolls, can avoid appearing the jamming phenomenon moreover, also can adjust the position that supports elastic component 51 simultaneously, reduce the atress of wheel 4.
The supporting elastic member 51 may be an elastic member such as a coil spring, a gas spring, a rubber spring, or the like.
The protective case further comprises a support rod 52, one end of the support rod 52 is arranged on the inner wall of the protective case 1, the other end of the support rod 52 is arranged on the chassis in a sliding mode and locked through a limit nut 53, and the support elastic piece 51 is sleeved on the support rod 52.
The supporting elastic part 51 is sleeved on the supporting rod 52, the supporting rod 52 is connected with the inner wall and the chassis of the protective shell 1 and is locked by the limiting nut 53, the initial elasticity of the supporting elastic part 51 can be adjusted by adjusting the limiting nut 53, so that the load capacity of the test trolley is adjusted, and meanwhile, the ground clearance of the chassis can be adjusted by adjusting the locking position of the limiting nut 53, so that the overall height of the test trolley is adjusted; the support bar 52 may also serve as an auxiliary support.
The protective case 1 includes: the top surface 11 and the side surface 12 arranged around the top surface 11, the side surface 12 and the top surface 11 are arranged in an obtuse angle, and the front chassis 2 and the rear chassis 3 are both arranged on the side surface 12 in a rotating way.
Protective housing 1 includes top surface 11 and top surface 11 around the face 12 that heels, receive when rolling at the test dolly, face 12 heels on, play the supporting role, face 12 heels and top surface 11 are the obtuse angle setting, it is more stable to support, be favorable to the car to climb up top surface 11 simultaneously, can avoid the test dolly to take the test dummy man to be bumped by the car and fly, and the face 12 that heels that the slope set up can also improve the waterproof performance of test dolly, when rainwater or other water drips to the test dolly top, make water flow down along face 12 heels under the action of gravity, and can not get into inside the test dolly.
In one embodiment the protective casing 1 is a trapezoidal platform with a slope of 45 degrees or other angles greater than 45 degrees.
The front chassis 2 and the rear chassis 3 are connected with the protective shell 1 through hinges and are arranged on the inner wall of the side inclined surface.
The inner wall of the protective shell 1 is provided with a plurality of reinforcing ribs 13.
The inner wall of the protective shell 1 is provided with a plurality of reinforcing ribs 13, and the thin strip-shaped reinforcing ribs 13 are adopted, so that the thickness and the weight of the trapezoidal table are reduced, the structural strength is high, the protective shell 1 is not easy to deform obviously when being rolled by an automobile, and all devices in the protective shell are protected from being damaged.
A plurality of pillars 14 are arranged on the inner wall of the protective shell 1.
The inner wall of protective housing 1 is equipped with many spinal branchs posts 14, receives when rolling at the test dolly, supports the compression of elastic component 51, and the edge of pillar 14 and protective housing 1 lands, plays main supporting role, and the bracing piece also can land after the protective housing warp to a certain extent, plays supplementary supporting role, promotes the supporting effect.
The LED lamp further comprises a component mounting box 6 arranged on the inner wall of the protective shell 1.
Be equipped with components and parts mounting box 6 at the inner wall of protective housing 1, be used for installing some components and parts, make components and parts mounting box 6 be located before between chassis 2 and the back chassis 3, under the unchangeable condition of the ground clearance that keeps the chassis and protective housing 1 height, with the common integral chassis of adoption among the prior art, and install components and parts above the chassis formula and compare, the mounting height that can be used to components and parts has showing and improves, or keep chassis ground clearance unchangeable and the mounting height of components and parts unchangeable, then can reduce the height of protective housing 1, and then reduce the height of test trolley, more be favorable to realistically carrying on the dummy and test.
The front chassis 2 is also provided with a steering device 7.
The front chassis 2 is also provided with a steering device 7 for driving the wheels 4 arranged on the front chassis 2 to steer, so that the test trolley has a steering function, and the safety test simulation real environment is more real.
Navigation antenna 8 is equipped with to the protective housing 1 inner wall, is equipped with antenna opening 15 on the protective housing 1.
The inner wall of the protective shell 1 is provided with the navigation antenna 8, and the antenna opening 15 is correspondingly arranged on the protective shell 1, so that the problem that the navigation antenna 8 is installed outside the protective shell 1 to influence the installation of a dummy can be avoided, and the problem that the navigation accuracy is not enough due to the fact that the navigation antenna 8 is arranged inside the protective shell 1 to influence signals can also be avoided. Transparent plastics such as acrylic, polyimide, etc. are used at the antenna opening 15 to minimize interference with the signals of the navigation antenna 8.
The component mounting box adopts a sealed box body to package a test trolley power supply, an electronic device and the like, all the electric connection with the outside of the box body is carried out through a connector, an aviation plug is preferably selected, and the component mounting box has good waterproof performance. Meanwhile, the aviation plug is mounted as close as possible to the upper side, so that the wading performance of the test trolley is improved. At present, the test trolley with the height of 100m can wade into water with the depth of more than 50 mm.
The functional implementation of the test carriage will be briefly described below with respect to figures 7-12,
as shown in fig. 7, the test cart is subjected to planar simplification to obtain a two-dimensional mechanism, the two-dimensional mechanism comprises a protective shell, a front chassis, a rear chassis and wheels, wherein the front wheels are steering wheels, and the rear wheels are driving wheels.
The rotary connection between the front chassis and the protective shell, between the rear chassis and the protective shell, between the wheels and the front chassis, and between the wheels and the rear chassis belongs to a low kinematic pair (A, B, C, D), and the linear contact between the driving wheels and the supporting surface belongs to a high kinematic pair (E, F), so that the whole plane mechanism has 4 low kinematic pairs and 2 high kinematic pairs.
According to a calculation formula of the degree of freedom of the plane mechanism, the mechanism has 5 degrees of freedom which are respectively the rotational degrees of freedom (2) of a steering wheel and a driving wheel, and the up-down translation, the left-right translation and the planar inner surface rotational degrees of freedom (3) of the mechanism in a plane.
Due to the action of gravity, the steering wheel and the driving wheel are always in contact with the ground in the rotating process, the rotating freedom degrees of the steering wheel and the driving wheel are respective local freedom degrees, and only the left-right translation (horizontal direction) freedom degrees exist between the steering wheel and the ground actually, and finally the test trolley moves forwards and backwards.
The up-down translation degree of freedom is used for realizing the rolling prevention function of the test trolley. When the protective case is subjected to a vertically downward force, as shown in fig. 8, the protective case moves downward until its lower edge comes into contact with the ground,
at this point, contact point M, N is in support and all components inside the protective case are not crushed.
In addition, the in-plane rotational degree of freedom allows the automobile to roll the test trolley from the front and back directions, as shown in fig. 9, when the automobile rolls the test trolley from the left side, the protective shell tilts to the left, the left edge contacts with the ground (contact point M) first, and the steering wheel and the components close to the left inside the test trolley are protected; when the car travels to the protective hull mid position, the protective hull state transitions to the situation shown in fig. 8, supported by M, N two edges; as shown in fig. 10, when the vehicle moves forward to the right, the protective shell tilts to the right, the right edge contacts with the ground (contact point N), and the steering wheel and the components on the right side inside the test trolley are protected.
The situation that the automobile rolls the test trolley from the right side is similar to the situation described above, and the description is omitted.
As shown in fig. 11, in order to prevent the protective shell from sinking naturally, springs are added between the protective shell and the front chassis and the rear chassis.
The spring is installed and is locked in advance through bracing piece and stop nut, through the stop nut that the adjustment is locked spring in advance and is used, can adjust the locking force in advance, adjustment test trolley load capacity, ground clearance h3 can also be adjusted to the locking height of adjusting stop nut simultaneously.
As shown in fig. 12, which is a simplified plan view of a prior art test cart of the global chassis type,
in the scheme, the test trolley adopts a single-layer structure, the test trolley adopts a double-layer structure in the prior art, and when the ground clearance h3 and the height size of the protective shell are kept unchanged, the height h1 for mounting the components is obviously greater than h 2; or when ground clearance h3 and the size of components and parts are kept unchanged, the height of the protective shell can be reduced, the height of the test trolley is further reduced, and the test trolley is more favorable for vividly carrying a dummy for testing. Can be reduced to within 100mm at present, and is level to the basic level and the international level.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a novel unmanned test dolly, is in including chassis, setting wheel (4) on the chassis and setting are in protective housing (1) on the chassis, a serial communication port, the chassis includes preceding chassis (2) and rear chassis (3), preceding chassis (2) with rear chassis (3) all rotate the setting and are in on protective housing (1), protective housing (1) with between preceding chassis (2) protective housing (1) with all set up support elastic component (51) between rear chassis (3).
2. The novel unmanned test trolley of claim 1, further comprising a support rod (52), wherein one end of the support rod (52) is arranged on the inner wall of the protective shell (1), the other end of the support rod (52) is slidably arranged on the chassis and is limited by a limit nut (53), and the support elastic member (51) is sleeved on the support rod (52).
3. The new driverless test vehicle as claimed in claim 1, wherein the protective case (1) comprises: the front chassis (2) and the rear chassis (3) are rotatably arranged on the lateral surfaces (12).
4. The new driverless test vehicle as claimed in any one of claims 1 to 3, wherein the inner wall of the protective shell (1) is provided with a plurality of reinforcing ribs (13).
5. The new driverless test vehicle as claimed in any one of claims 1 to 3, wherein the interior wall of the protective shell (1) is provided with a plurality of struts (14).
6. The novel unmanned test trolley of claim 1, further comprising a component mounting box (6) disposed on an inner wall of the protective housing (1).
7. The new driverless test vehicle as claimed in claim 1, wherein a steering device (7) is also provided on the front chassis (2).
8. The new driverless test vehicle as claimed in claim 1, characterized in that the protective shell (1) is provided with an antenna opening (15).
CN202021639047.XU 2020-08-10 2020-08-10 Novel unmanned test dolly Expired - Fee Related CN212807625U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021639047.XU CN212807625U (en) 2020-08-10 2020-08-10 Novel unmanned test dolly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021639047.XU CN212807625U (en) 2020-08-10 2020-08-10 Novel unmanned test dolly

Publications (1)

Publication Number Publication Date
CN212807625U true CN212807625U (en) 2021-03-26

Family

ID=75082086

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021639047.XU Expired - Fee Related CN212807625U (en) 2020-08-10 2020-08-10 Novel unmanned test dolly

Country Status (1)

Country Link
CN (1) CN212807625U (en)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210326

Termination date: 20210810

CF01 Termination of patent right due to non-payment of annual fee