Height adjusting device for an automobile testing platform

Abstract

The utility model discloses a height adjusting device for automobile detection platform relates to automobile detection platform technical field. The height adjusting device for automobile detection platform includes the mount, the upper portion of mount is provided with adjusting mechanism: drive assembly, including fixed mounting on the upper portion of mount and is increased height frame, the upper portion fixed mounting of height frame has the shell, the upper end fixed mounting of shell has the top, the upper portion fixed mounting of top has drive motor, rotates through drive motor and drives gear, and two groups of planetary gears are under the double restraint of the tooth profile structure of shell inner wall and drive gear, transmission frame bottom gear -like convex, revolve around drive gear, and also carry out autogyration, realize deceleration and increase the moment, and the tooth profile convex of transmission frame bottom and the planetary gear of output frame upper portion secondary reduce output speed and improve output torque, so that drive motor can select low output torque's model, thereby reduce the volume of drive motor, avoid the device volume too big.

Description

Technical Field

[0001] This utility model relates to the field of automotive testing platform technology, specifically a height adjustment device for automotive testing platforms. Background Technology

[0002] Automotive testing benches primarily monitor vehicle speed, braking performance, front wheel sideslip, wheel mass, axle load, overall vehicle mass, and power performance. The condition of the testing bench itself has a significant impact on the measurement results of these items, and may even cause one or more parameters of an entire vehicle or batch of vehicles to fail to meet standards. Therefore, it is necessary to ensure that the height of the automotive testing bench remains consistent. This requires the installation of an adjustment device on the automotive testing bench to enable rapid height adjustment.

[0003] The existing Chinese utility model patent with publication number CN208621332U discloses a height adjustment device for an automotive testing platform. The device includes an L-shaped testing platform with several adjustment devices on its vertical section. Each adjustment device includes a U-shaped support frame on the vertical section of the testing platform and a pad below the support frame. The pad has a boss with a limiting hole. A second threaded hole is located between the bottom surface of the limiting hole and the bottom of the boss. The limiting hole and the second threaded hole are concentrically arranged. The base plate of the support frame is horizontally arranged, and a vertically arranged first bolt is threadedly connected to the base plate. The lower end of the first bolt passes through the base plate and is positioned in the limiting hole. The first bolt is hollow, and a second bolt passes through it. The lower end of the second bolt is threaded to the boss through the second threaded hole. The second bolt and the first bolt are concentrically arranged. This utility model allows for rapid adjustment of the height of the automotive testing platform.

[0004] Because the testing equipment requires multiple height adjustment devices to form a stable support profile to keep the equipment stable, the aforementioned height adjustment devices adjust the position of the lead screws by rotating them. When adjusting the height, multiple lead screws need to be manually rotated to adjust the overall height of the device. Manual operation has a certain degree of error and cannot guarantee the downward movement length of multiple lead screws, which will cause the device to be in a tilted state. Currently, motors are generally used to adjust the position of the lead screws through gear transmission. Under the influence of the weight of the testing table, a large torque is required to adjust the position of the lead screws. The output torque of the motor is directly proportional to the size. If the output torque is guaranteed, the motor will be too large, which will affect the overall size of the device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a height adjustment device for automotive testing benches, which solves the problems of excessive device size caused by direct motor drive and the tendency to tilt when adjusting the height.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A height adjustment device for an automotive testing bench includes a mounting frame, and an adjustment mechanism is provided above the mounting frame.

[0007] The drive assembly includes a riser fixedly mounted above a mounting frame, a housing fixedly mounted above the riser, a top cover fixedly mounted on the upper end of the housing, a drive motor fixedly mounted above the top cover, a drive gear fixedly mounted below the shaft of the drive motor, a limit plate movably mounted on the outer side of the drive gear, a transmission frame fixedly mounted below the limit plate, an output frame movably mounted inside the housing, and planetary gears movably mounted above the transmission frame and the output frame.

[0008] The lifting assembly, located above the mounting frame, is used to adjust the height of the testing platform.

[0009] Preferably, the inner wall of the outer shell is provided with a toothed structure, the drive gear is fixedly connected to the shaft of the drive motor and forms a rotatable connection with the top cover, the limiting plate is rotatably connected to the top columnar structure of the drive gear through a bearing, and the bottom end of the transmission frame is provided with a gear-shaped protrusion with the same size as the drive gear.

[0010] Preferably, the top surfaces of the transmission frame and the output frame are provided with columnar protrusions arranged in a triangular pattern. The planetary gear is movably mounted on the outside of the columnar protrusion structure on the top of the transmission frame and the output frame through a nylon sleeve. The outer side of the planetary gear meshes with the tooth structure on the inner wall of the outer shell, and the inner side meshes with the drive gear and the gear-shaped protrusion below the transmission frame, respectively.

[0011] Preferably, the lifting assembly includes a transmission block movably installed inside the mounting frame, a gear plate fixedly installed on the outer side of the transmission block, a lead screw inserted inside the transmission block, a support plate fixedly installed at the bottom of the lead screw, a limiting post fixedly installed above the support plate, and a connecting plate fixedly installed at the top of the limiting post. The lifting assembly also includes an output gear fixedly installed at the bottom of the output frame, and a ranging module fixedly installed below the mounting frame.

[0012] Preferably, the transmission block is rotatably connected to the mounting bracket via a bearing, the bottom end of the gear plate does not contact the top surface of the mounting bracket, the inner wall of the transmission block is provided with a groove that fits into the outer thread structure of the lead screw, the lead screw and the transmission block are rotatably connected, and a protruding structure is provided on the bottom right side of the lead screw.

[0013] Preferably, the limiting posts are symmetrically installed above the protruding structure at the bottom of the lead screw, the limiting posts penetrate the mounting frame and form a sliding connection with the mounting frame, the rear side of the support plate is provided with a horizontal protruding structure, the installation position of the ranging module is located directly above the protruding structure on the rear side of the support plate, and a protective shell is fixedly installed on the top of the mounting frame.

[0014] Beneficial effects

[0015] This utility model provides a height adjustment device for an automotive testing platform. Compared with the prior art, it has the following advantages:

[0016] (1) The height adjustment device of the car testing platform drives the drive gear to rotate through the drive motor. Under the dual constraints of the tooth structure on the inner wall of the outer shell and the drive gear and the gear-shaped protrusion at the bottom of the transmission frame, the two sets of planetary gears both revolve around the drive gear and rotate on their own axis, thereby achieving deceleration and torque increase. The output speed is reduced and the output torque is increased by the tooth protrusion at the bottom of the transmission frame and the planetary gear above the output frame. This allows the drive motor to be selected with a low output torque model, thereby reducing the size of the drive motor and avoiding the device from being too large.

[0017] (2) The height adjustment device of the car inspection platform is driven by a drive motor to rotate the transmission block to adjust the position of the lead screw. After receiving the signal, the drive motors of multiple devices start and stop synchronously to reduce the height error. Through the setting of the distance measuring module, a horizontal protrusion structure is set on the rear side of the support plate. The installation position of the distance measuring module is located directly above the protrusion structure on the rear side of the support plate. The position information of the support plate is monitored by the distance measuring module. By installing multiple devices on the outside of the inspection platform, the monitoring data of the distance measuring module can reflect whether the inspection platform is in a horizontal state. The monitoring data of the distance measuring module is summarized by the PLC controller to perform leveling operation on the device to ensure that the device is still in a horizontal state after the height adjustment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the output frame mounting structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the transmission block and the lead screw of this utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the ranging module of this utility model;

[0022] In the diagram: 1. Mounting frame; 2. Adjustment mechanism; 21. Drive assembly; 211. Heightening frame; 212. Housing; 213. Top cover; 214. Drive motor; 215. Drive gear; 216. Limiting plate; 217. Transmission frame; 218. Output frame; 219. Planetary gear; 22. Lifting assembly; 221. Transmission block; 222. Gear disc; 223. Lead screw; 224. Support plate; 225. Limiting post; 226. Connecting plate; 227. Output gear; 228. Distance measuring module; 23. Protective shell. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a height adjustment device for an automobile testing platform, including a mounting frame 1, and an adjustment mechanism 2 is provided above the mounting frame 1.

[0025] The drive assembly 21 includes a riser frame 211 fixedly mounted above the mounting bracket 1. A housing 212 is fixedly mounted above the riser frame 211. A top cover 213 is fixedly mounted on the upper end of the housing 212. A drive motor 214 is fixedly mounted above the top cover 213. A drive gear 215 is fixedly mounted below the shaft of the drive motor 214. A limit plate 216 is movably mounted on the outer side of the drive gear 215. A transmission frame 217 is fixedly mounted below the limit plate 216. An output frame 218 is movably mounted inside the housing 212. A planetary gear 219 is movably mounted above the transmission frame 217 and the output frame 218. The inner wall of the housing 212 is provided with a toothed structure. The shaft of the drive motor 214 is fixedly connected and rotates with the top cover 213. The limiting plate 216 rotates with the top columnar structure of the drive gear 215 through the bearing. The bottom end of the transmission frame 217 is provided with a gear-shaped protrusion with the same size as the drive gear 215. The top surfaces of the transmission frame 217 and the output frame 218 are provided with columnar protrusions distributed in a triangular pattern. The planetary gear 219 is movably installed on the outside of the columnar protrusion structure on the top of the transmission frame 217 and the output frame 218 through a nylon sleeve. The outer side of the planetary gear 219 meshes with the tooth structure on the inner wall of the outer shell 212, and the inner side meshes with the drive gear 215 and the gear-shaped protrusion below the transmission frame 217, respectively.

[0026] Specifically, the drive motor 214 is model 60TM-01330F5-C. The mounting bracket 1 has elongated openings on both the front and rear sides for bolts to pass through, allowing the mounting bracket 1 to be fixed to the outside of the testing table. The riser 211 raises the height of the outer casing 212, creating a space between the bottom of the outer casing 212 and the mounting bracket 1 for the installation of the output gear 227. The toothed structure on the inner wall of the outer casing 212 meshes with the planetary gear 219, providing a fixed tooth surface for the planetary gear 219. This meshing transmission restricts the movement trajectory of the planetary gear 219, causing it to rotate on its own axis while revolving around the central axis. Furthermore, torque is transmitted through meshing with the planetary gear 219, achieving both deceleration and torque increase. The limiting plate 216 and the drive gear 215 form a rotatable connection. The limiting plate 216 is fixedly connected to the top of the protruding structure of the transmission frame 217 and the output frame 218 by bolts, which can limit the position of the planetary gear 219 and the position of the transmission frame 217. The drive gear 215 meshes with the planetary gear 219 installed on the top of the transmission frame 217. The gear-shaped protrusion at the bottom of the transmission frame 217 can mesh with the inner side of the planetary gear 219 on the top of the output frame 218, which can transmit the input speed and torque to the planetary gear 219, drive the planetary gear 219 to rotate and revolve, thereby driving the entire system to operate and realizing the functions of deceleration and torque conversion. The output frame 218 can transmit torque to the output gear 227 on the outer side of the bottom.

[0027] The lifting assembly 22, located above the mounting frame 1, is used to adjust the height of the testing platform. The lifting assembly 22 includes a transmission block 221 movably installed inside the mounting frame 1. A gear disc 222 is fixedly installed on the outer side of the transmission block 221. A lead screw 223 is inserted inside the transmission block 221. A support plate 224 is fixedly installed at the bottom of the lead screw 223. A limiting post 225 is fixedly installed above the support plate 224. A connecting plate 226 is fixedly installed at the top of the limiting post 225. The lifting assembly 22 also includes an output gear 227 fixedly installed at the bottom of the output frame 218, and a ranging module 228 fixedly installed below the mounting frame 1. The transmission block 221 is connected to the mounting frame 1 via bearings. The brackets 1 are rotatably connected. The bottom end of the gear plate 222 does not contact the top surface of the mounting bracket 1. The inner wall of the transmission block 221 is provided with a groove that fits into the outer thread structure of the lead screw 223. The lead screw 223 and the transmission block 221 are rotatably connected. The bottom right side of the lead screw 223 is provided with a protruding structure. The limiting post 225 is symmetrically installed above the bottom protruding structure of the lead screw 223. The limiting post 225 penetrates the mounting bracket 1 and is slidably connected with the mounting bracket 1. The rear side of the support plate 224 is provided with a horizontal protruding structure. The installation position of the ranging module 228 is located directly above the protruding structure on the rear side of the support plate 224. The protective shell 23 is fixedly installed on the top of the mounting bracket 1.

[0028] Specifically, the transmission block 221 can adjust the relative position between the lead screw 223 and the mounting bracket 1. The gear disk 222 on the outside of the transmission block 221 meshes with the output gear 227. Since the rotation angle of the lead screw 223 is limited by the limiting post 225, the lead screw 223 cannot rotate and can only move in the vertical direction. When the drive assembly 21 drives the transmission block 221 to rotate through the output gear 227 and the gear disk 222, the lead screw 223 will move under the guidance of the groove inside the transmission block 221, thereby adjusting the position of the lead screw 223. The connecting plate 226 can prevent the limiting post 225 from slipping out of the mounting bracket 1. The ranging module 228 is model XKC-KL200. The ranging module 228 can monitor the distance between the top surface of the support plate 224 and the bottom surface of the mounting bracket 1. The protective shell 23 can protect the gear disk 222. At the same time, the contents not described in detail in this specification are all prior art known to those skilled in the art.

[0029] During operation, the drive motor 214 drives the drive gear 215 to rotate. Under the dual constraints of the toothed structure on the inner wall of the housing 212 and the gear-shaped protrusions at the bottom of the drive gear 215 and the transmission frame 217, the two sets of planetary gears 219 both revolve around the drive gear 215 and rotate on their own axes, achieving speed reduction and torque increase. The toothed protrusions at the bottom of the transmission frame 217 and the planetary gears 219 above the output frame 218 further reduce the output speed and increase the output torque, allowing the drive motor 214 to be selected with a lower output torque, thus reducing its size and preventing the device from becoming too large. The drive motor 214 drives the transmission block 221 to rotate, thereby adjusting the position of the lead screw 223. Upon receiving a signal, the drive motors 214 of multiple devices start and stop synchronously to reduce height error. The distance measuring module 228 is installed above the rear protrusion of the support plate 224, which has a horizontal protrusion. The distance measuring module 228 monitors the position of the support plate 224. By installing multiple devices on the outside of the testing platform, the monitoring data from the distance measuring module 228 reflects whether the testing platform is level. The PLC controller then aggregates the monitoring data to perform leveling operations on the device, ensuring that it remains level after height adjustment.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A height adjustment device for an automotive testing bench, comprising a mounting bracket (1), characterized in that: An adjustment mechanism (2) is provided above the mounting bracket (1): The drive assembly (21) includes a riser frame (211) fixedly mounted above the mounting frame (1), a housing (212) fixedly mounted above the riser frame (211), a top cover (213) fixedly mounted on the upper end of the housing (212), a drive motor (214) fixedly mounted above the top cover (213), a drive gear (215) fixedly mounted below the shaft of the drive motor (214), a limit plate (216) movably mounted on the outer side of the drive gear (215), a transmission frame (217) fixedly mounted below the limit plate (216), an output frame (218) movably mounted inside the housing (212), and a planetary gear (219) movably mounted above the transmission frame (217) and the output frame (218). The lifting assembly (22) is located above the mounting bracket (1) and is used to adjust the height of the testing table.

2. The height adjustment device for an automobile testing platform according to claim 1, characterized in that: The inner wall of the outer shell (212) is provided with a toothed structure. The drive gear (215) is fixedly connected to the shaft of the drive motor (214) and is rotatably connected to the top cover (213). The limiting plate (216) is rotatably connected to the top columnar structure of the drive gear (215) through a bearing. The bottom end of the transmission frame (217) is provided with a gear-shaped protrusion with the same size as the drive gear (215).

3. The height adjustment device for an automobile testing platform according to claim 1, characterized in that: The transmission frame (217) and the output frame (218) are provided with triangularly distributed columnar protrusions on their top surfaces. The planetary gear (219) is movably installed on the outside of the columnar protrusion structure on the top of the transmission frame (217) and the output frame (218) through a nylon sleeve. The outer side of the planetary gear (219) meshes with the tooth structure on the inner wall of the outer shell (212), and the inner side meshes with the drive gear (215) and the gear-shaped protrusion below the transmission frame (217), respectively.

4. The height adjustment device for an automobile testing platform according to claim 1, characterized in that: The lifting assembly (22) includes a transmission block (221) movably installed inside the mounting frame (1), a gear plate (222) fixedly installed on the outside of the transmission block (221), a lead screw (223) inserted inside the transmission block (221), a support plate (224) fixedly installed at the bottom of the lead screw (223), a limiting post (225) fixedly installed above the support plate (224), a connecting plate (226) fixedly installed at the top of the limiting post (225), and the lifting assembly (22) also includes an output gear (227) fixedly installed at the bottom of the output frame (218), and a ranging module (228) fixedly installed below the mounting frame (1).

5. The height adjustment device for an automobile testing platform according to claim 4, characterized in that: The transmission block (221) is rotatably connected to the mounting bracket (1) via a bearing. The bottom end of the gear plate (222) does not contact the top surface of the mounting bracket (1). The inner wall of the transmission block (221) is provided with a groove that fits into the outer thread structure of the lead screw (223). The lead screw (223) and the transmission block (221) are rotatably connected. The bottom right side of the lead screw (223) is provided with a protruding structure.

6. The height adjustment device for an automobile testing platform according to claim 4, characterized in that: The limiting post (225) is symmetrically installed above the protruding structure at the bottom of the lead screw (223). The limiting post (225) passes through the mounting frame (1) and forms a sliding connection with the mounting frame (1). A horizontal protruding structure is provided on the rear side of the support plate (224). The installation position of the ranging module (228) is located directly above the protruding structure on the rear side of the support plate (224). A protective shell (23) is fixedly installed on the top of the mounting frame (1).

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