CN217424760U

CN217424760U - Unmanned test trolley

Info

Publication number: CN217424760U
Application number: CN202122823594.4U
Authority: CN
Inventors: 罗慧超
Original assignee: Suzhou Kuruizhixing Technology Co ltd
Current assignee: Suzhou Kuruizhixing Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-09-13
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses an unmanned test trolley, which comprises a test trolley body, wherein the test trolley body comprises a trolley body and four wheels, the number of the wheels is four, four wheels are symmetrically arranged on the left side and the right side of the trolley body in pairs, the front side of the test trolley body is provided with an anti-collision mechanism, the left side of the test trolley body is also provided with an emergency stop mechanism, the anti-collision mechanism comprises a first anti-collision shell, a second anti-collision shell, an anti-collision plate and a buffer spring, the first anti-collision shell is fixedly arranged on the front side of the test trolley body, the second anti-collision shell is slidably arranged in the first anti-collision shell, in the utility model, the impact force generated during collision can be buffered by arranging the anti-collision mechanism, thereby the damage caused by the collision of the test trolley body is reduced, the service life of the test trolley body is prolonged, and the emergency stop mechanism can control the test trolley body to carry out emergency stop, and the impact loss is reduced.

Description

Unmanned test trolley

Technical Field

The utility model relates to a drive safety test technical field, especially relate to an 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 the future automobile. 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.

The prior patent (publication number: CN212807625U) provides a novel unmanned test trolley, which comprises a chassis, wheels arranged on the chassis and a protective shell arranged on the chassis, wherein the chassis comprises a front chassis and a rear chassis, the front chassis and the rear chassis are both rotatably arranged on the protective shell, and supporting elastic pieces are respectively arranged between the protective shell and the front chassis and between the protective shell and the rear 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.

The test trolley has the following disadvantages when in use: the anti-collision mechanism is not arranged, the anti-collision can not be achieved, when the test trolley collides with an obstacle, the force generated by collision can damage the structure inside the trolley, the service life of the test trolley is shortened, potential safety hazards exist, and therefore the unmanned test trolley is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a unmanned test trolley has solved and has not had anticollision mechanism, can not anticollision, and when the test trolley lies in the barrier and collides, the power that the striking produced can produce the structure of dolly and destroy, has shortened the life of test trolley, has the technical problem of potential safety hazard.

In order to solve the technical problem, the utility model provides an unmanned test trolley, which comprises a test trolley body, wherein the test trolley body comprises a trolley body and four wheels, the wheels are four, the four wheels are symmetrically arranged on the left side and the right side of the trolley body in pairs, the front side of the test trolley body is provided with an anti-collision mechanism, the left side of the test trolley body is also provided with an emergency stop mechanism, the anti-collision mechanism comprises a first anti-collision shell, a second anti-collision shell, an anti-collision plate and a buffer spring, the first anti-collision shell is fixedly arranged on the front side of the test trolley body, the second anti-collision shell is slidably arranged inside the first anti-collision shell, one side of the second anti-collision shell extending to the outside of the first anti-collision shell is fixedly connected with the anti-collision plate, the buffer spring is fixedly arranged inside the first anti-collision shell, one end of the buffer spring far away from the inner wall of the first anti-collision shell is fixedly connected with the inner wall of the second anti-collision shell, the test trolley comprises a test trolley body, and is characterized in that impact force generated during impact can be buffered, so that damage caused by the impact of the test trolley body is reduced, the service life of the test trolley body is prolonged, the emergency stop mechanism comprises an emergency stop switch, a controller, an installation shell, an electric push rod, a push plate and a brake plate, the emergency stop switch is fixedly installed outside a first anti-collision shell, the controller is fixedly installed on the left side of the test trolley body, the installation shell is fixedly installed on the left side of the test trolley body, the electric push rod is fixedly installed at the inner top of the installation shell, the telescopic end of the electric push rod is fixedly connected with the push plate, the bottom of the push plate is symmetrically and fixedly installed with two brake plates, the brake plates correspond to the positions of wheels, the emergency stop switch and the electric push rod are electrically connected with the controller, and when the test trolley body collides, the emergency stop mechanism can control the test trolley body to perform emergency stop, the impact loss is reduced.

Preferably, the top and the bottom of the second anti-collision shell are both provided with through holes, the inside of each through hole is slidably connected with a guide rod, the guide rods are fixedly installed inside the first anti-collision shell and limit the front and back movement of the second anti-collision shell, and the movement stability of the second anti-collision shell is improved.

Preferably, set up on the first crashproof shell and supply the gliding spout of second crashproof shell, the ring channel has been seted up to the inside of spout, the internally mounted of ring channel has the ball, reduces the frictional force between first crashproof shell and the second crashproof shell, avoids first crashproof shell and second crashproof shell wearing and tearing.

Preferably, two sleeves are symmetrically installed on the top wall in the installation shell, a sliding rod is connected to the inside of the sleeve in a sliding mode, the bottom end of the sliding rod is fixedly connected with the top surface of the push plate, the push plate is limited in moving up and down, and the push plate is prevented from deviating when moving up and down.

Preferably, the brake pad is fixedly mounted at the bottom of the brake plate and made of rubber, so that the friction force of the bottom surface of the brake plate is increased, and the brake is more stable.

Preferably, the left side of the test trolley body is fixedly provided with an alarm, the alarm is electrically connected with the controller, and the controller can control the alarm to generate sound and light alarm to prompt an operator when the test trolley body collides.

Compared with the prior art, the utility model provides a pair of have following beneficial effect:

1. the utility model discloses in, drive the inside removal of second anticollision shell to first anticollision shell in step through the anticollision board, second anticollision shell extrusion buffer spring makes buffer spring take place elastic deformation to cushion impact force through buffer spring, and then reach the effect of anticollision protection, thereby alleviate the injury that test dolly body striking brought, extension test dolly body life.

2. The utility model discloses in, when buffer spring warp and reach an amount, scram switch is started transmission signal and is given the controller, and controller control siren and electric putter start, promote the push pedal and move down through electric putter, and the push pedal drives the brake block and realizes the effect of brake scram with the wheel laminating, reduces the striking loss, takes place reputation alarm suggestion operating personnel through the siren, in time clears up the barrier.

Drawings

FIG. 1 is a schematic structural view of an unmanned test vehicle;

FIG. 2 is a schematic cross-sectional view of the driverless test cart;

FIG. 3 is a schematic structural view of a brake plate in the driverless test vehicle;

fig. 4 is an enlarged view of a structure at a in fig. 2.

Reference numbers in the figures: 1. testing the trolley body; 2. a first impact shell; 3. a second impact shell; 4. an anti-collision plate; 5. a buffer spring; 6. a through hole; 7. a guide bar; 8. a ball bearing; 9. an emergency stop switch; 10. a controller; 11. An alarm; 12. mounting a shell; 13. an electric push rod; 14. pushing the plate; 15. a brake plate; 16. a sleeve; 17. A slide bar; 18. a brake pad.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to the attached drawings 1 to 4, the driverless test vehicle in the embodiment comprises a test vehicle body 1, wherein the test vehicle body 1 comprises a vehicle body and four wheels, the four wheels are symmetrically arranged on the left side and the right side of the vehicle body in pairs, an anti-collision mechanism is arranged on the front side of the test vehicle body 1, an emergency stop mechanism is further arranged on the left side of the test vehicle body 1, the anti-collision mechanism comprises a first anti-collision shell 2, a second anti-collision shell 3, an anti-collision plate 4 and a buffer spring 5, the first anti-collision shell 2 is fixedly arranged on the front side of the test vehicle body 1, the second anti-collision shell 3 is slidably arranged inside the first anti-collision shell 2, the anti-collision plate 4 is fixedly connected to one side of the second anti-collision shell 3 extending to the outside of the first anti-collision shell 2, the buffer spring 5 is fixedly arranged inside the first anti-collision shell 2, one end of the buffer spring 5 far away from the inner wall of the first anti-collision shell 2 is fixedly connected with the inner wall of the second anti-collision shell 3, the impact force generated during impact can be buffered, so that the damage caused by the impact of the test trolley body 1 is reduced, the service life of the test trolley body 1 is prolonged, the emergency stop mechanism comprises an emergency stop switch 9, a controller 10, an installation shell 12, an electric push rod 13, a push plate 14 and a brake plate 15, the emergency stop switch 9 is fixedly installed outside the first anti-collision shell 2, the controller 10 is fixedly installed on the left side of the test trolley body 1, the installation shell 12 is fixedly installed on the left side of the test trolley body 1, the electric push rod 13 is fixedly installed at the top inside the installation shell 12, the push plate 14 is fixedly connected with the telescopic end of the electric push rod 13, the two brake plates 15 are symmetrically and fixedly installed at the bottom of the push plate 14, the brake plates 15 correspond to the positions of wheels, the emergency stop switch 9 and the electric push rod 13 are both electrically connected with the controller 10, when the test trolley body 1 collides, the emergency stop mechanism can control the test trolley body 1 to perform emergency stop, and the impact loss is reduced.

Second embodiment, on first embodiment's basis, through-hole 6 has all been seted up with the bottom at 3 tops of second anticollision shell, and the inside sliding connection of through-hole 6 has guide bar 7, and guide bar 7 fixed mounting is spacing to the back-and-forth movement of second anticollision shell 3 in the inside of first anticollision shell 2, improves 3 mobility stability of second anticollision shell.

Third embodiment, on the basis of first embodiment, set up on first crashproof shell 2 and supply the gliding spout of second crashproof shell 3, the ring channel has been seted up to the inside of spout, and the internally mounted of ring channel has ball 8, reduces the frictional force between first crashproof shell 2 and the second crashproof shell 3, avoids first crashproof shell 2 and the wearing and tearing of second crashproof shell 3.

In the fourth embodiment, on the basis of the first embodiment, two sleeves 16 are symmetrically installed on the inner top wall of the installation shell 12, a sliding rod 17 is slidably connected inside each sleeve 16, the bottom end of each sliding rod 17 is fixedly connected with the top surface of the push plate 14, the up-and-down movement of the push plate 14 is limited, and the push plate 14 is prevented from being displaced when moving up and down.

Fifth embodiment, on the basis of the first embodiment, the brake pad 18 is fixedly installed at the bottom of the brake plate 15, and the brake pad 18 is made of rubber, so that the friction force on the bottom surface of the brake plate 15 is increased, and the brake is more stable.

Sixth embodiment, on the basis of the first embodiment, the left side of the test trolley body 1 is fixedly provided with the alarm 11, the alarm 11 is electrically connected with the controller 10, and the controller 10 can control the alarm 11 to generate the sound and light alarm to prompt the operator when the test trolley body 1 collides.

The working principle is as follows: when the test trolley body 1 collides in the advancing process, the second anti-collision shell 3 is driven by the anti-collision plate 4 to synchronously move towards the inside of the first anti-collision shell 2, the second anti-collision shell 3 extrudes the buffer spring 5 to enable the buffer spring 5 to elastically deform, and the impact force is buffered by the buffer spring 5, so that the anti-collision protection effect is achieved, the damage caused by the collision of the test trolley body 1 is reduced, the service life of the test trolley body 1 is prolonged, when the buffer spring 5 deforms to a certain amount, the emergency stop switch 9 is started to transmit a signal to the controller 10, the controller 10 controls the alarm 11 and the electric push rod 13 to start, the push plate 14 is pushed by the electric push rod 13 to move downwards, the push plate 14 drives the brake plate 15 to be attached to wheels to achieve the brake emergency stop effect, the collision loss is reduced, and the alarm 11 gives an audible and visual alarm to prompt an operator, and clearing the obstacles in time.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the above embodiments is to let the person skilled in the art understand the contents of the present invention and implement the present invention, which can not limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The unmanned test trolley comprises a test trolley body (1), and is characterized in that the test trolley body (1) comprises a trolley body and four wheels, the four wheels are symmetrically arranged on the left side and the right side of the trolley body in pairs, an anti-collision mechanism is arranged on the front side of the test trolley body (1), an emergency stop mechanism is further arranged on the left side of the test trolley body (1), the anti-collision mechanism comprises a first anti-collision shell (2), a second anti-collision shell (3), an anti-collision plate (4) and a buffer spring (5), the first anti-collision shell (2) is fixedly arranged on the front side of the test trolley body (1), the second anti-collision shell (3) is slidably arranged inside the first anti-collision shell (2), the anti-collision plate (4) is fixedly connected to one side, extending to the outside of the first anti-collision shell (2), the buffer spring (5) is fixedly arranged inside the first anti-collision shell (2), one end of the buffer spring (5) far away from the inner wall of the first anti-collision shell (2) is fixedly connected with the inner wall of the second anti-collision shell (3), the emergency stop mechanism comprises an emergency stop switch (9), a controller (10), a mounting shell (12), an electric push rod (13), a push plate (14) and a brake plate (15), the emergency stop switch (9) is fixedly arranged outside the first anti-collision shell (2), the controller (10) is fixedly arranged on the left side of the testing trolley body (1), the mounting shell (12) is fixedly mounted on the left side of the test trolley body (1), an electric push rod (13) is fixedly arranged at the inner top of the mounting shell (12), the telescopic end of the electric push rod (13) is fixedly connected with a push plate (14), two brake plates (15) are symmetrically and fixedly arranged at the bottom of the push plate (14), the brake plate (15) corresponds to the position of a wheel, and the emergency stop switch (9) and the electric push rod (13) are both electrically connected with the controller (10).

2. The unmanned test trolley according to claim 1, wherein through holes (6) are formed in the top and the bottom of the second anti-collision shell (3), a guide rod (7) is slidably connected inside the through holes (6), and the guide rod (7) is fixedly installed inside the first anti-collision shell (2).

3. The unmanned test trolley according to claim 1, wherein a sliding opening for the second anti-collision shell (3) to slide is formed in the first anti-collision shell (2), an annular groove is formed in the sliding opening, and a ball (8) is mounted in the annular groove.

4. The unmanned test trolley of claim 1, wherein two sleeves (16) are symmetrically mounted on the inner top wall of the mounting shell (12), a sliding rod (17) is slidably connected inside each sleeve (16), and the bottom end of each sliding rod (17) is fixedly connected with the top surface of the push plate (14).

5. The driverless test vehicle of claim 1, wherein a brake pad (18) is fixedly mounted to a bottom of the brake plate (15), the brake pad (18) being made of rubber.

6. The unmanned test vehicle as claimed in claim 1, wherein an alarm (11) is fixedly mounted on the left side of the test vehicle body (1), and the alarm (11) is electrically connected with the controller (10).