LabCar test yellow board bench

By designing a transparent door panel and a semi-open structure for the yellow board display stand, the problem of poor display effect of the yellow board display stand was solved, realizing a comprehensive display of the vehicle's internal functional components and improving the teaching effect, while protecting the wiring harness and improving safety.

CN224553915UActive Publication Date: 2026-07-24SHANDONG PROMOTE MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG PROMOTE MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The current LabCar test benches are not effective at demonstrating vehicle structure and cannot meet the needs of teaching and popular science.

Method used

A yellow board test bench was designed, which includes a vehicle frame, a door frame, and a wiring harness. It adopts a transparent door panel and a semi-open structure, allowing observation of the working process of functional components through the transparent door panel. A notch is set on the connecting frame to protect the wiring harness, a support platform is added to stabilize the CAN box connection, and a master control switch is added to improve safety.

Benefits of technology

It enables a comprehensive display of the vehicle's internal functional components, protects the wiring harness from damage, improves the effectiveness of teaching and popular science education, and ensures safety and ease of operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of yellow board bench for LabCar test, belong to LabCar test technical field.Yellow board bench, for assembling functional components, comprising: vehicle frame, it includes car head frame, vehicle body frame and tail frame;Vehicle door frame is hinged with the vehicle body frame to realize the switching of the vehicle door frame opening state and closed state, each vehicle door frame includes two pieces of transparent door plate arranged with interval to form door cavity, two pieces of transparent door plate are connected by connecting frame, the length of connecting frame is shorter than the length of transparent door plate to form half-open structure, part of the functional components are installed in the door cavity;Wire harness, the wire harness connects power supply and the functional components, the wire harness is arranged in the vehicle body frame and the vehicle door frame to power supply the functional components.Solve the technical problem that current yellow board bench display vehicle structure effect is not good.
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Description

Technical Field

[0001] This utility model relates to the field of LabCar testing technology, and in particular to a yellow board test stand for LabCar testing. Background Technology

[0002] A LabCar testing system typically consists of three parts: a test cabinet, a yellow board test bench, and a host computer software platform. The yellow board test bench is used to arrange and install electronic and electrical components according to their respective locations within the vehicle, such as the motor, battery, PEU, on-board charger, and steering system. The wiring harnesses are usually from the actual vehicle.

[0003] Current yellow board test benches are mainly geared towards engineers in automotive companies, with a small portion used to help students in vehicle engineering learn about vehicle structure. Since automotive engineers no longer need to study vehicle structure and the yellow board test bench is primarily aimed at engineers, its current design does not focus on structural demonstration, resulting in poor effectiveness in teaching. Therefore, this paper proposes a new yellow board test bench to address the technical problem of its poor performance in demonstrating vehicle structure. Utility Model Content

[0004] The main purpose of this invention is to provide a yellow board test bench for LabCar testing, which aims to solve the technical problem that the current yellow board test benches do not effectively display the vehicle structure.

[0005] To achieve the above objectives, this utility model proposes a LabCar testing yellow board stand for assembling functional components, comprising:

[0006] Vehicle frame, which includes front frame, body frame and rear frame;

[0007] A door frame is hinged to the body frame to switch between an open and closed state. Each door frame includes two transparent door panels arranged at intervals to form a door cavity. The two transparent door panels are connected by a connecting frame. The length of the connecting frame is shorter than the length of the transparent door panel to form a semi-open structure. Some of the functional components are installed in the door cavity.

[0008] A wiring harness that connects a power source and the functional components, the wiring harness being routed through the vehicle body frame and the door frame to supply power to the functional components.

[0009] Optionally, in one embodiment of the present invention, the vehicle body frame includes a plurality of mounting columns, the door frame is hinged to the mounting columns, and a portion of the wiring harness passes through the mounting columns to supply power to the functional components in the door cavity;

[0010] The connecting frame includes a first connecting frame located on one side near the mounting post hinged to the door frame. The first connecting frame has a frame plate and folded edges. The folded edges are located on both sides of the frame plate and are connected to the transparent door panel. The frame plate has a notch to avoid the wiring harness. The notch is inclined, and the lower point of the notch is closer to the interior of the vehicle frame than the higher point.

[0011] Optionally, in one embodiment of the present invention, a support platform is also included. The functional components include at least a driver's seat, a steering wheel, and a CAN box, with the CAN box located on one side of the steering wheel.

[0012] The support platform includes a tray and a rod. The tray has a baffle at one end near the rear frame. One end of the rod is hinged to the tray, and the other end is hinged to the vehicle frame. The rod has a supporting state in which it is inclined so that the tray is close to the CAN box, and a horizontal storage state in which the rod is horizontal. The tray is used to support the PCan adapter.

[0013] Optionally, in one embodiment of the present invention, the vehicle frame has a receiving groove, the shape of which corresponds to the rod to accommodate the rod.

[0014] Optionally, in one embodiment of the present invention, the door frame further includes a second connecting frame, which connects two spaced-apart transparent door panels, and adjacent second connecting frames are spaced apart to form an operating channel communicating with the door cavity.

[0015] Optionally, in one embodiment of the present invention, the edge of the notch is covered with a protective sleeve.

[0016] Optionally, in one embodiment of the present invention, the mounting column is a hollow structure, and a through hole is formed on the surface of the mounting column, the through hole communicating with the interior of the mounting column.

[0017] Optionally, in one embodiment of the present invention, the vehicle frame further includes a connecting beam, the connecting beam connecting the front frame and the rear frame, the mounting column connecting the connecting beam, the connecting beam having a hollow structure, and the hollow structure of the connecting beam communicating with the hollow structure of the mounting column.

[0018] Optionally, in one embodiment of the present invention, the mounting column has a connecting side plate and a connecting flap, and the connecting side plate and the connecting flap are connected to the connecting beam.

[0019] Optionally, in one embodiment of the present invention, a master control switch and wheels are also included. The master control switch is connected to the power supply and is located on the front frame or the rear frame.

[0020] Compared with existing technologies, this utility model achieves at least the following beneficial effects. By using a transparent door panel, the functional components inside the car door can be observed. The window regulator motor can be operated via the window control panel, and its movement can be displayed through the transparent door panel. The door lock components can be observed by operating the door lock control buttons, demonstrating their operation. In addition to observing the operation process, the connection methods of each functional component can also be observed, achieving a comprehensive display.

[0021] In addition, since the dimensions of the connecting bracket are shorter than the dimensions of each side of the transparent door panel, the door frame will not form a closed structure even after the connecting bracket is installed. It will still have openings on its periphery, through which the interior of the door cavity can be observed, or the internal functional components can be touched or operated. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the LabCar testing yellow board platform of this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0025] Figure 3 This is a schematic diagram of the door frame in the LabCar test bench of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of another door frame in the LabCar test yellow board platform of this utility model;

[0027] Figure 5 This is a schematic diagram of the connecting beam in the LabCar test yellow board platform of this utility model;

[0028] Figure 6 for Figure 4 Enlarged view of the structure at point B;

[0029] Figure 7 This is a schematic diagram of the structure of the first connecting frame in the LabCar test yellow board platform of this utility model;

[0030] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of the LabCar testing yellow board platform of this utility model;

[0031] Figure 9 This is a schematic diagram of the support platform in Embodiment 2 of the LabCar test yellow board platform of this utility model.

[0032] Explanation of icon numbers:

[0033] 100. Vehicle frame; 110. Front frame; 120. Body frame; 121. Mounting post; 122. Receiving groove; 123. Through hole; 124. Connecting beam; 125. Connecting side panel; 126. Connecting flap; 130. Rear frame; 200. Door frame; 210. Transparent door panel; 220. Door cavity; 230. Handle assembly; 240. Door lock assembly; 250. Window lift motor; 300. Connecting frame; 310. First connecting frame; 311. Frame body; 312. Folded edge; 313. Notch; 320. Second connecting frame; 330. Protective cover; 400. Support platform; 410. Tray; 411. Baffle; 420. Rod; 500. PCan adapter; 600. Master control switch;

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] Yellow board test benches are primarily used for testing the electronic and electrical systems of vehicles, especially new energy vehicles. Designed to mimic the frame of a complete vehicle, they can be categorized into complete vehicle yellow board test benches and system yellow board test benches based on the degree of assembly on the bench. While yellow board test benches can demonstrate the structure of a vehicle, they also possess certain educational or popular science value. However, since they are mainly geared towards automotive engineers, current yellow board test bench structures have limitations in their application in educational and popular science contexts. Therefore, this solution proposes a yellow board test bench structure that retains its testing functionality while enhancing its application value in the fields of education and popular science. Example 1

[0040] Reference Figures 1-7In this embodiment, the yellow board platform consists of a vehicle frame 100, a door frame 200, and a wiring harness (not shown). Specifically, the vehicle frame 100 can be divided into a front frame 110, a body frame 120, and a rear frame 130 depending on its location. One end of the body frame 120 is connected to the front frame 110, and the other end is connected to the rear frame 130. The front frame 110 is used to install functional components of the front part of the vehicle, such as motors, water tanks, and front suspensions. The body frame 120 is used to install functional components of the body part, such as steering wheels, central control screens, and seats. The rear frame 130 is used to install functional components of the rear part of the vehicle, such as taillights and rear suspensions. It is understood that not all functional components are described in detail here, but those skilled in the art can install other unmentioned functional components according to different actual needs.

[0041] The door frame 200 is hinged to the body frame 120 to enable the opening and closing of the door. In this design, the door frame 200 includes two spaced-apart transparent door panels 210, which are connected and fixed by a connecting bracket 300. The space between the two transparent door panels 210 forms a door cavity 220. Some functional components are installed within the door cavity 220, such as a handle component 230, a door lock component 240, and a window lift motor 250. The length of the connecting bracket 300 is shorter than the length of the transparent door panels 210. Specifically, the length of the transparent door panels 210 includes both horizontal and vertical dimensions. It should be noted that the length of the connecting bracket 300 is shorter than both the horizontal length and vertical height of the transparent door panels 210. After connecting the transparent door panels 210 via the connecting bracket 300, the door frame 200 has a semi-open structure, with openings on its periphery connecting to the door cavity 220. It should be noted that, for ease of understanding, this design... Figure 1 One of them and Figure 3 Each of the car door frames 200 conceals a transparent door panel 210.

[0042] Reference Figure 3 Specifically, one of the multiple connecting brackets 300 is used to install the window control panel and door lock control keys, and the control panel and control keys are respectively connected to the corresponding functional components to realize control.

[0043] In addition, the yellow board platform also includes a wiring harness that connects to the power supply and functional components to power the functional components.

[0044] This design utilizes a transparent door panel 210 to allow observation of the internal functional components of the vehicle door. The window regulator motor 250 can be moved by operating the window control panel, and its movement is displayed through the transparent door panel 210. The door lock component 240 can be observed by operating the door lock control buttons, demonstrating its operation. In addition to observing the operational process, the connection methods of each functional component can also be observed, achieving a comprehensive display.

[0045] In addition, since the dimensions of the connecting bracket 300 are shorter than the dimensions of each side of the transparent door panel 210, even after the connecting bracket 300 is installed, the door frame 200 will not form a closed structure. It will still have openings on its periphery, through which the interior of the door cavity 220 can be observed, or the internal functional components can be touched or operated through the openings.

[0046] Preferably, the connecting frame 300 is a metal connecting frame 300, and the door panel is a transparent acrylic door panel. At the same time, the thickness of the door panel needs to be increased to ensure that its structural strength meets the requirements. It should be understood that this is not a limitation on the thickness of the door panel, and the thickness of the door panel can be determined according to the specific working environment.

[0047] Compared to existing yellow board test benches, the door frame 200 in this design offers a better display effect. Furthermore, the door frame 200 has a semi-open structure, ensuring structural strength while allowing operation of the internal functional components. This yellow board test bench can be applied to related tests during vehicle development, experimental operations in university teaching, and popular science demonstrations.

[0048] Furthermore, refer to Figure 1 and Figure 5 In this embodiment, the vehicle body frame 120 includes multiple mounting pillars 121. The mounting pillars 121 are used to replace the A-pillar, B-pillar, C-pillar, etc. in the actual vehicle. Depending on the vehicle model, different numbers of mounting pillars 121 can be installed. The following description uses a passenger car as an example.

[0049] In this embodiment, a total of six mounting pillars 121 are arranged. Three mounting pillars 121 are provided on each side of the vehicle body frame 120 to replace the A-pillar, B-pillar and C-pillar in the actual vehicle. Specifically, the door frame 200 is hinged to the mounting pillars 121. In addition to providing the mounting structure, the wiring harness will also pass through the mounting pillars 121 to connect with different functional components.

[0050] Reference Figures 1-2 The connecting bracket 300 for connecting the door panel includes a first connecting bracket 310. Connecting brackets 300 are provided on all four sides of the door panel. When the door is closed, the first connecting bracket 310 is opposite to the mounting bracket.

[0051] In the prior art, when the wiring harness is first connected to the functional component in the door cavity 220, a certain length is reserved. When the door is opened, the distance between the functional component and the power source increases, and the reserved portion of the wiring harness is pulled out. However, when the door is closed, because the wiring harness is flexible, the pulled-out wiring harness may be squeezed, bent and deformed and not return to its original position. As a result, when the door is closed, the wiring harness may be squeezed and damaged, or the door may not be able to close properly due to the obstruction of the wiring harness.

[0052] Reference Figure 7 To solve this problem, the first connecting frame 310 in this solution has a notch 313. The notch 313 avoids the routing path of the wiring harness. The wiring harness passes through the notch 313 of the first connecting frame 310 and enters the door cavity 220 to connect with the functional components therein.

[0053] The notch 313 is slanted, with its lower point closer to the interior of the vehicle frame 120 than its higher point; that is, the higher point of the notch 313 is on the outside, and the lower point is on the inside. After passing through the notch 313, the wiring harness rests on it. When the door is opened, the harness is pulled outwards and moves a certain distance along the edge of the notch 313 towards the higher point as the door moves. When the door is closed, the harness moves a certain distance along the edge of the notch 313 towards the lower point. This downward movement of the harness when the door is closed helps to retract the harness to some extent. Furthermore, in cases where the harness is compressed, it is often compressed into an approximately "Ω" shape with the protrusion facing outwards. The notch 313 in this design can prevent the harness from bending, providing support to encourage the harness to bend beyond its length and then spring back towards both ends, thus promoting harness retraction and reducing the risk of the harness being compressed.

[0054] Furthermore, since friction occurs between the wiring harness and the notch 313 during the opening and closing process, and the edge of the notch 313 is relatively sharp and can easily scratch the wiring harness, a protective sleeve 330 is wrapped around the edge of the notch 313 to protect the wiring harness. The protective sleeve 330 can fully or partially cover the notch 313, and there is no limitation on this.

[0055] Furthermore, refer to Figures 5-6 To facilitate the installation of wire harnesses, the mounting post 121 is designed as a hollow structure, and multiple through holes 123 are opened on the surface of the mounting post 121 for the wire harnesses to pass through. Optionally, the through holes 123 are oval in shape.

[0056] Furthermore, the vehicle frame 120 also includes a connecting beam 124, which connects the front frame 110 and the rear frame 130 respectively. The connecting beam 124 is also a hollow structure so that the wiring harness can pass through the power supply at the front of the vehicle and connect to the functional components at the rear of the vehicle to provide power to the taillights, etc.

[0057] Specifically, the mounting column 121 is connected to the connecting beam 124. The mounting column 121 has a connecting side plate 125 and a connecting flap 126 structure. The mounting column 121 is stably connected to the connecting beam 124 through the connecting side plate 125 and the connecting flap 126. Specifically, the included angle between the connecting side plate 125 and the connecting flap 126 is a right angle.

[0058] Besides automotive testing, this yellow-board test bench is also used for teaching and demonstration. Since it is a complete vehicle test bench, meaning it can move after being powered on, and since power is supplied by pressing the brake pedal and then pressing the start button while holding the key, all these starting operations can be completed from the driver's seat. However, the driver's seat is also the main area for visitors to experience the operation. Therefore, to improve safety, a master control switch 600 is added. This master control switch 600 is placed at the front frame 110 or rear frame 130, away from the driver's seat, to prevent accidental starting and driving. Preferably, it is placed at the front frame 110, a position that can be observed by the driver. Only after turning on the master control switch 600 can the yellow-board test bench be powered on and started. Example 2

[0059] Reference Figures 3-9 Example 2 is a further optimization based on Example 1. When performing functions such as fault diagnosis, performance monitoring, and system debugging, it is necessary to read messages through the CAN box. Since the CAN box is not a component used by drivers during daily driving, its location is usually concealed and difficult to connect. To facilitate message reading by engineers, the position of the CAN box is adjusted in this solution, moving it to the side of the steering wheel closer to the passenger side for quick connection and message reading.

[0060] When connecting the CAN box, the PCan adapter 500 is required. After the PCan adapter 500 is connected to the CAN box, it will be suspended in the air. The adapter is only supported by the connection between the CAN box and the PCan adapter 500, which can easily lead to unstable connection or the adapter falling off.

[0061] Therefore, a support platform 400 is added in the solution of embodiment 2. The support platform 400 includes a rod 420 and a tray 410. Specifically, one end of the rod 420 is hinged to the vehicle frame 120, and the other end is hinged to the tray 410. The tray 410 has a baffle 411 on the side near the rear of the vehicle.

[0062] When it is necessary to observe each functional component, rotate the rod 420 towards the rear of the vehicle so that the rod 420 is rotated to a horizontal position. The tray 410 follows the rotation of the rod 420 and descends closer to the rear of the vehicle. At this time, the support platform 400 will not obstruct the observation.

[0063] Reference Figures 8-9 When it is necessary to connect to the CAN box to read messages, rotate the rod 420 towards the front of the vehicle, and the tray 410 gradually rises. Place the adapter on the tray 410 and connect it to the CAN box. After the baffle 411 of the tray 410 abuts against the adapter, a force balance is generated between the support platform 400 and the adapter. Figure 9 The middle arrow indicates the stress on the PCan adapter, providing support to the adapter and ensuring a stable connection.

[0064] Furthermore, a receiving groove 122 can be provided on the vehicle frame 120. The shape of the receiving groove 122 corresponds to that of the rod 420 so as to store the horizontal rod 420 and further reduce its impact on the vehicle frame 120. It is understood that after the rod 420 enters the receiving groove 122, the tray 410 still protrudes from the surface of the vehicle frame 120, and the rod 420 can be pulled out through the tray 410.

[0065] Reference Figure 3 and Figure 4 Furthermore, in both Embodiment 1 and Embodiment 2, the door frame 200 can be divided into a front door frame and a rear door frame. Figure 3 For the front door frame, Figure 4 The rear door frame is equipped with window control panels and door lock control buttons, while the front door frame does not have window control panels and door lock control buttons, leaving more space for observation or operation.

[0066] The connecting frame 300 also includes a second connecting frame 320, which is smaller in volume than the first connecting frame 310. The rear door frame uses more second connecting frames 320 than the front door frame to reserve more space for observation or operation.

[0067] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A LabCar testing yellow board stand for assembling functional components, characterized in that, include: Vehicle frame, which includes front frame, body frame and rear frame; A door frame is hinged to the body frame to switch between an open and closed state. Each door frame includes two transparent door panels arranged at intervals to form a door cavity. The two transparent door panels are connected by a connecting frame. The length of the connecting frame is shorter than the length of the transparent door panel to form a semi-open structure. Some of the functional components are installed in the door cavity. A wiring harness that connects a power source and the functional components, the wiring harness being routed through the vehicle body frame and the door frame to supply power to the functional components.

2. The LabCar test yellow board stand as described in claim 1, characterized in that, The vehicle body frame includes multiple mounting posts, the door frame is hinged to the mounting posts, and a portion of the wiring harness passes through the mounting posts to supply power to the functional components in the door cavity. The connecting frame includes a first connecting frame located on one side near the mounting post hinged to the door frame. The first connecting frame has a frame plate and folded edges. The folded edges are located on both sides of the frame plate and are connected to the transparent door panel. The frame plate has a notch to avoid the wiring harness. The notch is inclined, and the lower point of the notch is closer to the interior of the vehicle frame than the higher point.

3. The LabCar test yellow board stand as described in claim 1, characterized in that, It also includes a support platform, and the functional components include at least a driver's seat, a steering wheel, and a CAN box, with the CAN box located on one side of the steering wheel; The support platform includes a tray and a rod. The tray has a baffle at one end near the rear frame. One end of the rod is hinged to the tray, and the other end is hinged to the vehicle frame. The rod has a supporting state in which it is inclined so that the tray is close to the CAN box, and a horizontal storage state in which the rod is horizontal. The tray is used to support the PCan adapter.

4. The LabCar test yellow board stand as described in claim 3, characterized in that, The vehicle frame has a receiving groove, the shape of which corresponds to the rod to accommodate the rod.

5. The LabCar test yellow board stand as described in claim 1, characterized in that, The door frame also includes a second connecting frame, which connects two spaced-apart transparent door panels. Adjacent second connecting frames are spaced apart to form an operating channel that communicates with the door cavity.

6. The LabCar test yellow board stand as described in claim 2, characterized in that, The edges of the notch are covered with a protective sleeve.

7. The LabCar test yellow board stand as described in claim 2, characterized in that, The mounting column has a hollow structure, and a through hole is formed on the surface of the mounting column, which connects to the interior of the mounting column.

8. The LabCar test yellow board stand as described in claim 7, characterized in that, The vehicle body frame also includes a connecting beam that connects the front frame and the rear frame. The mounting column connects to the connecting beam, which is a hollow structure. The hollow structure of the connecting beam is connected to the hollow structure of the mounting column.

9. The LabCar test yellow board stand as described in claim 8, characterized in that, The mounting column has a connecting side plate and a connecting flap, which are connected to the connecting beam.

10. The LabCar test yellow board stand as described in claim 1, characterized in that, It also includes a master control switch and wheels, the master control switch being connected to the power supply and located on the front frame or the rear frame.