A motor drive experiment device

Abstract

The utility model discloses a motor drive experiment equipment, including device main part, device main part includes base, the base top fixedly connected with the bottom plate, the bottom plate top is provided with double motor installation adjusting assembly, the bottom plate top and located double motor installation adjusting assembly's front end is provided with gear drive assembly, the front end of gear drive assembly is provided with chain tensioning adjusting assembly, and the device is driven by hydraulic cylinder drive connecting rod in double motor installation adjusting assembly and makes mobile seat slide along the bottom plate, and the driven motor realizes axial accurate displacement with mobile seat, and the second, third driven gear that cooperates with the longitudinal arrangement on the driven shaft can complete the meshing switching of chain and different gear fast, effectively reduces transmission impact and noise, realizes the accurate experiment simulation of multiple transmission ratio, and expands the experimental scene coverage range of equipment.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, specifically to an experimental device for motor transmission. Background Technology

[0002] In the field of electric motor drive experimental technology, the transmission system composed of motors, gears and chains is the core unit for power transmission in mechanical equipment. Its transmission performance testing experiments are of great significance for equipment development, teaching and scientific research and fault diagnosis. At present, traditional electric motor drive experimental equipment has significant shortcomings in terms of transmission meshing adjustment accuracy and transmission process stability assurance, making it difficult to meet the experimental requirements of multiple working conditions and high precision.

[0003] On the one hand, the motors of existing experimental equipment are mostly installed using fixed bracket structures. If it is necessary to simulate experiments with different transmission ratios, the motors must be disassembled manually, the gear spacing adjusted, and then reassembled. This is not only cumbersome, but also has low precision in manual adjustment, which can easily lead to uneven meshing clearance between gears and chains, causing problems such as transmission impact and increased noise. It is impossible to accurately simulate the transmission pairing relationship under actual working conditions. Although some equipment is equipped with simple adjustment mechanisms, they mostly rely on manual drive by lead screws, which has low adjustment efficiency and lacks stable power output, making it difficult to achieve continuous and precise control of the gear switching process. On the other hand, chain tensioning and transmission limit are key to ensuring experimental stability, but existing equipment has obvious defects. The tensioning mechanism mostly uses a fixed tensioning wheel or a manual screw adjustment structure, which cannot adapt to the tension fluctuations of the chain caused by gear switching and load changes. The chain is prone to fall off due to sudden tension changes during gear switching, and there is a lack of buffer components. The meshing impact acts directly on the gear tooth surface, accelerating component wear.

[0004] Therefore, developing a motor drive experimental device that integrates a dual-motor precision adjustment meshing structure and a multi-dimensional limit collaborative protection structure is key to solving the problems of low adjustment efficiency and poor transmission stability of existing equipment. It is of great significance for improving the accuracy of motor drive experiments and expanding the scope of experimental scenarios. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a motor drive experimental device, which aims to solve the problems of not having a dual-motor precise adjustment meshing structure and difficulty in realizing a multi-dimensional limit and coordinated protection structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An experimental device for motor transmission includes a main body, which includes a base. A base plate is fixedly connected to the top of the base. A dual-motor mounting and adjusting assembly is provided on the top of the base plate. The dual-motor mounting and adjusting assembly includes a fixed seat fixedly connected to the top of the base plate. A movable seat is provided on one side of the fixed seat. The bottom of the movable seat is slidably connected to the top of the base plate. A drive motor and a driven motor are fixedly connected to the top of the fixed seat and the movable seat, respectively. A gear transmission assembly is provided above the base plate and at the front end of the dual-motor mounting and adjusting assembly. The gear transmission assembly includes a drive gear fixedly connected to the output end of the drive motor. A fixed disk is fixedly connected to the output end of the driven motor. A first driven gear is fixedly connected to the front end of the fixed disk by bolts. A driven shaft is fixedly connected to the center of the front end of the first driven gear. A second driven gear and a third driven gear are sequentially fixedly connected to the outer wall of the driven shaft along the longitudinal direction. The third driven gear is driven by a chain. A chain tension adjusting assembly is provided between the drive gear and the third driven gear.

[0007] Preferably, a hydraulic cylinder is fixedly connected to the top of the base plate, and a connecting rod is fixedly connected to the output end of the hydraulic cylinder. The side of the connecting rod away from the output end of the hydraulic cylinder is fixedly connected to the side of the movable seat.

[0008] Preferably, a limiting frame is fixedly connected to the top of the base plate and near the movable seat, the chain is located inside the limiting frame, and a limiting disc is fixedly connected to the front end of the driven shaft.

[0009] Preferably, the chain tension adjustment assembly includes a fixed bracket fixedly connected to the top of the base plate, a lifting bracket slidably connected inside the fixed bracket, and the top end of the lifting bracket extending to the outside of the fixed bracket.

[0010] Preferably, a tension gear is provided at the top of the inside of the lifting bracket, and the rollers on both sides of the tension gear are rotatably connected to the inner side wall of the lifting bracket through bearings, and the tension gear meshes with the chain.

[0011] Preferably, a damper is fixedly connected between the bottom of the lifting bracket and the bottom of the fixed bracket, and a return spring is sleeved on the outer wall of the damper. The two ends of the return spring are fixedly connected to the bottom of the fixed bracket and the bottom of the lifting bracket, respectively. A handle is fixedly connected to the front end of the lifting bracket.

[0012] Preferably, a controller is fixedly connected to the front end of the base, and omnidirectional casters are fixedly connected to the bottom of the base.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) This device uses a hydraulic cylinder in the dual-motor installation and adjustment assembly to drive the connecting rod to move the moving seat along the base plate, so that the driven motor can achieve precise axial displacement with the moving seat. With the second and third driven gears arranged longitudinally on the driven shaft, the meshing and switching of the chain with different gears can be completed quickly. The stable power output of the hydraulic drive and the guiding constraint of the sliding structure replace the traditional manual disassembly and adjustment method. This not only shortens the time spent on gear switching and adjustment and greatly improves the experimental efficiency, but also ensures that the meshing gap between the gear and the chain is uniform, effectively reducing transmission impact and noise, realizing accurate experimental simulation of multiple transmission ratios, and expanding the experimental scenario coverage of the equipment.

[0014] (2) This device utilizes the synergistic effect of the damper and the return spring in the chain tension adjustment assembly. When the chain experiences tension fluctuations due to gear switching or load changes, the lifting bracket drives the tensioning gear to adaptively extend and retract. The spring force is used to achieve dynamic adjustment of the tension force. At the same time, the damper absorbs meshing impacts. In conjunction with the limit frame to constrain the lateral displacement of the chain and the limit plate to prevent the driven gear from axial movement, the multi-dimensional limiting structure, through the synergistic protection of elastic buffering and mechanical limiting, prevents the chain from falling off or the gear from moving, significantly improving the stability of the transmission system during the experiment. This allows the experimental data fluctuation error to be controlled, while also reducing the wear of gears and chains and extending the service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the experimental equipment; Figure 2 This is a schematic diagram of part of the experimental equipment. Figure 3 for Figure 2 Enlarged structural diagram at point A in the diagram; Figure 4 for Figure 2 A magnified structural diagram at point B in the diagram.

[0016] In the diagram: 1. Main body of the device; 101. Base; 102. Base plate; 2. Dual motor mounting and adjusting assembly; 201. Fixed seat; 202. Moving seat; 203. Drive motor; 204. Driven motor; 205. Hydraulic cylinder; 206. Connecting rod; 3. Gear transmission assembly; 301. Drive gear; 302. Fixed plate; 303. First driven gear; 304. Driven shaft; 305. Second driven gear; 306. Third driven gear; 307. Chain; 308. Limiting frame; 309. Limiting plate; 4. Chain tension adjusting assembly; 401. Fixed bracket; 402. Lifting bracket; 403. Tensioning gear; 404. Damper; 405. Return spring; 406. Handle; 501. Controller; 502. Universal caster. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0018] Please see Figures 1-4 This utility model discloses an experimental device for motor transmission, including a main body 1. The main body 1 includes a base 101, and a base plate 102 is fixedly connected to the top of the base 101. A dual-motor mounting and adjusting assembly 2 is provided on the top of the base plate 102. The dual-motor mounting and adjusting assembly 2 includes a fixed seat 201 fixedly connected to the top of the base plate 102, and a movable seat 202 is provided on one side of the fixed seat 201. The bottom of the movable seat 202 is slidably connected to the top of the base plate 102. A drive motor 203 and a driven motor 204 are fixedly connected to the top of the fixed seat 201 and the movable seat 202, respectively. A gear transmission assembly 3 is provided above the base plate 102 and at the front end of the dual-motor mounting and adjusting assembly 2. The gear transmission assembly 3 includes a drive gear 301 fixedly connected to the output end of the drive motor 203. A fixed disk 302 is fixedly connected to the output end of the driven motor 204. A first driven gear 3 is fixedly connected to the front end of the fixed disk 302 by bolts. 03. A driven shaft 304 is fixedly connected to the center of the front end of the first driven gear 303. A second driven gear 305 and a third driven gear 306 are fixedly connected to the outer wall of the driven shaft 304 in the longitudinal direction. The third driven gear 306 is driven by a chain 307 to the drive gear 301. A chain tension adjustment assembly 4 is provided between the drive gear 301 and the third driven gear 306. The hydraulic cylinder in the dual-motor mounting adjustment assembly 2 drives the moving seat 202 to slide along the base plate 102, which drives the driven motor 204 and the fixed plate 302 at the output end, the first driven gear 303, and the driven shaft 304 to move. This causes the chain 307 to switch meshing between the second driven gear 305 and the third driven gear 306 on the drive gear 301 and the driven shaft 304. The chain tension adjustment assembly 4 ensures stable meshing, realizes accurate experimental simulation of multiple transmission ratios, shortens the switching time, and improves experimental efficiency and stability.

[0019] As one implementation method of this embodiment, such as Figure 2As shown, a hydraulic cylinder 205 is fixedly connected to the top of the base plate 102. A connecting rod 206 is fixedly connected to the output end of the hydraulic cylinder 205. The side of the connecting rod 206 away from the output end of the hydraulic cylinder 205 is fixedly connected to one side of the movable seat 202. The hydraulic cylinder 205 outputs power to drive the connecting rod 206 to extend and retract, causing the movable seat 202 to slide along the base plate 102. This provides a stable driving force for the displacement of the driven motor 204 and the gear set, thereby improving the adjustment accuracy of the movable seat and ensuring the precise meshing of the chain 307 with different gears.

[0020] As one implementation method of this embodiment, such as Figure 1 As shown, a limiting frame 308 is fixedly connected to the top of the base plate 102 and near the movable seat 202. The chain 307 is located inside the limiting frame 308. A limiting disk 309 is fixedly connected to the front end of the driven shaft 304. The limiting frame 308 constrains the lateral displacement of the chain 307, while the limiting disk 309 restricts the axial movement of the driven shaft 304 and the gear, forming a multi-dimensional limiting coordination, reducing chain wobble and gear displacement, so that the experimental data fluctuation error can be controlled and the transmission stability can be improved.

[0021] As one implementation method of this embodiment, such as Figure 4 As shown, the chain tension adjustment assembly 4 includes a fixed bracket 401 fixedly connected to the top of the base plate 102. A lifting bracket 402 is slidably connected inside the fixed bracket 401. The top end of the lifting bracket 402 extends to the outside of the fixed bracket 401. The fixed bracket 401 in the chain tension adjustment assembly 4 provides the installation base. The lifting bracket 402 slides inside it and its top end extends to the outside, so that the tension gear 403 can be flexibly raised and lowered to adapt to the position change of the chain 307, providing structural support for chain tension adjustment and ensuring the flexibility of meshing adjustment.

[0022] As one implementation method of this embodiment, such as Figure 4 As shown, a tension gear 403 is provided at the top of the inside of the lifting bracket 402. The rollers on both sides of the tension gear 403 are rotatably connected to the inner wall of the lifting bracket 402 through bearings. The tension gear 403 meshes with the chain 307. Flexible rotation is achieved by connecting the rollers on both sides of the tension gear 403 at the top of the inside of the lifting bracket 402 with the bearings on the inner wall of the lifting bracket. The meshing of the tension gear 403 with the chain 307 reduces transmission friction and allows for close contact with the chain to adjust tension, ensuring stable chain transmission.

[0023] As one implementation method of this embodiment, such as Figure 4As shown, a damper 404 is fixedly connected between the bottom of the lifting bracket 402 and the bottom of the fixed bracket 401. A return spring 405 is sleeved on the outer wall of the damper 404. The two ends of the return spring 405 are fixedly connected to the bottom of the fixed bracket 401 and the bottom of the lifting bracket 402, respectively. A handle 406 is fixedly connected to the front end of the lifting bracket 402. The damper 404 between the bottom of the lifting bracket 402 and the fixed bracket 401 absorbs the meshing impact. The return spring 405 on its outer side provides elastic tension to drive the lifting bracket to self-adjust. The handle 406 at the front end facilitates manual adjustment, thereby achieving dynamic stability of the chain 307 tension, increasing buffering efficiency, reducing component wear, and making operation convenient.

[0024] As one implementation method of this embodiment, such as Figure 1 As shown, a controller 501 is fixedly connected to the front end of the base 101, and omnidirectional casters 502 are fixedly connected to the four sides of the bottom of the base 101. The controller 501 at the front end of the base 101 integrates and controls the operating parameters of the equipment, such as the motor speed and the hydraulic cylinder action, to realize the automated operation of the experiment. At the same time, the omnidirectional casters 502 on the four sides of the bottom facilitate the flexible movement of the equipment, improving the site adaptability and ease of use.

[0025] Working principle: The hydraulic cylinder 205 in the dual-motor mounting adjustment assembly 2 drives the connecting rod 206 to extend and retract, causing the movable seat 202 to slide along the base plate 102. This causes the driven motor 204 and the fixed plate 302 at the output end, the first driven gear 303, and the driven shaft 304 to move synchronously. This allows the chain 307 to switch meshing between the second driven gear 305 and the third driven gear 306 on the drive gear 301 and the driven shaft 304. Combined with the stable driving force provided by the hydraulic cylinder 205, the adjustment accuracy of the movable seat 202 is improved, ensuring precise meshing between different gears and the chain 307 and significantly reducing the switching time. At the same time, the limiting frame 308 constrains the lateral offset of the chain 307, and the limiting plate 309 restricts the axial movement of the driven shaft 304 and the gears, forming a multi-dimensional limiting synergy. This reduces the wobble of the chain 307 and the displacement of the gears, effectively controlling the fluctuation error of experimental data and improving the stability of the transmission system and the efficiency of the experiment.

[0026] The fixed bracket 401 in the chain tension adjustment assembly 4 provides the installation base, and the lifting bracket 402 slides inside it and extends to the outside at the top, so that the tension gear 403 can be flexibly raised and lowered to adapt to the position change of the chain 307. The tension gear 403 is connected to the lifting bracket 402 through the bearing to achieve flexible rotation and mesh with the chain 307, which reduces transmission friction and adjusts the tension. The damper 404 at the bottom of the lifting bracket 402 absorbs the meshing impact, and the outer return spring 405 provides elastic tension to achieve adaptive adjustment. With the handle 406, it is easy to manually assist, ensuring the dynamic stability of the chain 307 tension and improving the buffering efficiency, reducing component wear.

[0027] The controller 501 at the front of the base 101 integrates and controls parameters such as motor speed and hydraulic cylinder 205 movement to achieve automated operation, while the omnidirectional casters 502 at the bottom enhance the equipment's mobility and site adaptability, thus improving the overall ease of use of the equipment.

[0028] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An experimental device for motor drive, characterized in that: The device includes a main body (1), which includes a base (101). A base plate (102) is fixedly connected to the top of the base (101). A dual-motor mounting and adjusting assembly (2) is provided on the top of the base plate (102). The dual-motor mounting and adjusting assembly (2) includes a fixed seat (201) fixedly connected to the top of the base plate (102). A movable seat (202) is provided on one side of the fixed seat (201). The bottom of the movable seat (202) is slidably connected to the top of the base plate (102). A drive motor (203) and a driven motor (204) are fixedly connected to the top of the fixed seat (201) and the movable seat (202), respectively. A gear transmission assembly (3) is provided above the base plate (102) and at the front end of the dual-motor mounting and adjusting assembly (2). The gear transmission assembly (3) includes a drive gear (301) fixedly connected to the output end of the drive motor (203). A fixed disk (302) is fixedly connected to the output end of the driven motor (204). A first driven gear (303) is fixedly connected to the front end of the fixed disk (302) by bolts. A driven shaft (304) is fixedly connected to the center of the front end of the first driven gear (303). A second driven gear (305) and a third driven gear (306) are fixedly connected to the outer wall of the driven shaft (304) in sequence along the longitudinal direction. The third driven gear (306) is driven by a chain (307) to the drive gear (301). A chain tension adjustment assembly (4) is provided between the drive gear (301) and the third driven gear (306).

2. The experimental device for motor drive according to claim 1, characterized in that: A hydraulic cylinder (205) is fixedly connected to the top of the base plate (102), and a connecting rod (206) is fixedly connected to the output end of the hydraulic cylinder (205). The side of the connecting rod (206) away from the output end of the hydraulic cylinder (205) is fixedly connected to the side of the movable seat (202).

3. The experimental device for motor drive according to claim 1, characterized in that: A limiting frame (308) is fixedly connected to the top of the base plate (102) and near the movable seat (202). The chain (307) is located inside the limiting frame (308). A limiting disk (309) is fixedly connected to the front end of the driven shaft (304).

4. The experimental device for motor drive according to claim 1, characterized in that: The chain tension adjustment assembly (4) includes a fixed bracket (401) fixedly connected to the top of the base plate (102), and a lifting bracket (402) is slidably connected inside the fixed bracket (401). The top of the lifting bracket (402) extends to the outside of the fixed bracket (401).

5. The experimental device for motor drive according to claim 4, characterized in that: A tension gear (403) is provided at the top of the inside of the lifting bracket (402). The rollers on both sides of the tension gear (403) are rotatably connected to the inner wall of the lifting bracket (402) through bearings. The tension gear (403) meshes with the chain (307).

6. The experimental device for motor drive according to claim 5, characterized in that: A damper (404) is fixedly connected between the bottom of the lifting bracket (402) and the bottom of the fixed bracket (401). A return spring (405) is sleeved on the outer wall of the damper (404). The two ends of the return spring (405) are fixedly connected to the bottom of the fixed bracket (401) and the bottom of the lifting bracket (402) respectively. A handle (406) is fixedly connected to the front end of the lifting bracket (402).

7. The experimental device for motor drive according to claim 1, characterized in that: The base (101) is fixedly connected to the front end of the controller (501), and the base (101) is fixedly connected to the four sides of the bottom of the base (101) with universal casters (502).

Images