Locomotive traction motor tester

Abstract

This utility model relates to the field of traction motor testing technology, specifically a locomotive traction motor tester, including a base. The base has four symmetrically distributed positioning blocks. A limiting mechanism for adjusting the position of the four positioning blocks is also provided on the base. Two symmetrically distributed first push rods and two symmetrically distributed second push rods are slidably mounted on the base. The two sets of first and second push rods are perpendicularly distributed. Each of the four positioning blocks is slidably engaged with a corresponding set of first and second push rods. Through a transmission design where the mounting rod directly drives the first gear and the mounting tube directly drives the second gear, precise linkage adjustment of the four positioning blocks is achieved. The clever combination of ratchet, pawl, spring, and electromagnetic adsorption components achieves bidirectional mechanical locking of the mounting rod and drive rod, preventing vibration from affecting the motor's stability.

Description

Technical Field

[0001] This utility model relates to the field of traction motor testing technology, specifically a locomotive traction motor tester. Background Technology

[0002] In the testing of locomotive traction motors, quickly and accurately fixing the motor under test onto the test bench and ensuring strict alignment of its shaft system with the load system are crucial prerequisites for guaranteeing the accuracy of test data and operational safety. Currently, most known test benches employ a fixed base or an independently adjustable clamping mechanism.

[0003] In existing technologies, fixed bases can only be used with a single type of motor, resulting in extremely poor versatility. While independent adjustable mechanisms can accommodate motors of different sizes by adjusting the positions of multiple clamps, this process relies entirely on the operator's experience and requires repeated measurement and calibration using tools such as dial indicators. This is time-consuming, labor-intensive, and difficult to guarantee alignment accuracy. For large and heavy test components such as locomotive traction motors, manual fine-tuning is particularly difficult and can easily lead to additional bending moments and severe vibrations during testing due to misalignment. This not only distorts the collected torque, speed, and vibration data but may also damage delicate sensors or even the motor itself. Therefore, we propose a locomotive traction motor tester. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this application provides a locomotive traction motor tester, including a base. The base is provided with four sets of symmetrically distributed positioning blocks. The base is provided with a limiting mechanism for adjusting the position of the four sets of positioning blocks. Two sets of symmetrically distributed first push rods and two sets of symmetrically distributed second push rods are slidably installed on the base. The two sets of first push rods and second push rods are vertically distributed. The four sets of positioning blocks are slidably sleeved with a corresponding set of first push rods and second push rods.

[0005] In some embodiments, the limiting mechanism further includes a mounting tube and a mounting rod rotatably mounted in the base, the mounting rod passing through the mounting tube and slidably sleeved with the mounting tube, a drive rod rotatably mounted in the base and perpendicularly distributed to the mounting tube, and an anti-loosening mechanism for locking the mounting rod and the drive rod in the base.

[0006] In some embodiments, a first rack is fixedly mounted on each of the two sets of first push rods, and a first gear is provided between the two sets of first racks. The first gear meshes with the two sets of first racks respectively, and the first gear is rotatably connected to the machine base through a mounting rod. A second rack is fixedly mounted on each of the two sets of second push rods, and a second gear is provided between the two sets of second racks. The second gear meshes with the two sets of second racks respectively, and the second gear is rotatably connected to the machine base through a mounting tube.

[0007] In some embodiments, a first bevel gear is sleeved on the mounting tube, and a second bevel gear is sleeved on the drive rod, wherein the first bevel gear and the second bevel gear are meshed together.

[0008] In some embodiments, the anti-loosening mechanism includes two sets of ratchet wheels symmetrically sleeved on the mounting rod or drive rod. Both sides of the mounting tube and the mounting rod are provided with pawls corresponding to the ratchet wheels. The two sets of pawls are respectively engaged with the corresponding ratchet wheels. Both sets of pawls are rotatably connected to the machine base through a rotating rod. A torsion spring is sleeved on the rotating rod. The two ends of the torsion spring are respectively fixedly connected to the pawl and the machine base. A third gear is sleeved on the rotating rod.

[0009] In some embodiments, two sets of third racks that mesh with a third gear are slidably installed inside the base, a connecting frame is slidably installed inside the base, the connecting frame is fixedly connected to the two sets of third racks respectively, a slide rod is fixedly installed inside the base, the connecting frame and the slide rod are slidably sleeved, two sets of symmetrically distributed springs are sleeved on the slide rod, the two ends of the two sets of springs are fixedly connected to the connecting frame and the base respectively, and a metal block is fixedly installed on the connecting frame.

[0010] In some embodiments, a solenoid corresponding to the metal block is fixedly installed inside the base, and a power supply device corresponding to the solenoid is fixedly installed inside the base, with the solenoid electrically connected to the positive and negative terminals of the power supply device respectively.

[0011] This utility model has at least the following beneficial effects: 1. Through a transmission design where the mounting rod directly drives the first gear and the mounting tube directly drives the second gear, precise linkage adjustment of the four sets of positioning blocks is achieved. When the operator rotates the mounting rod via the drive device, the first gear rotates synchronously, thereby engaging and driving the two sets of first racks and first push rods to make precise opposite or reverse linear movements, achieving synchronous positioning of one pair of sides of the motor. Similarly, rotating the mounting tube drives the second gear to rotate, driving the two sets of second racks and second push rods to move, adjusting the positioning blocks on the other pair of sides. This linkage mechanism, where the central transmission shaft (mounting rod and mounting tube) directly drives the gears, ensures absolute synchronization and symmetry of the movement of the push rods in the same group. It fundamentally eliminates the problems of misalignment and non-alignment that easily occur when manually adjusting multiple clamps independently, significantly reducing the difficulty and time cost of adjustment. It ensures precise alignment between the motor center and the test bench rotation center, effectively eliminating additional bending moments and vibrations caused by misalignment, thus ensuring the accuracy of torque, speed, and other test data acquisition, and protecting the motor and precision sensors from damage.

[0012] The anti-loosening mechanism, through the ingenious combination of ratchet, pawl, spring, and electromagnetic adsorption components, achieves bidirectional mechanical locking of the mounting rod and drive rod. After the motor is fixed and the power is turned off, the solenoid demagnetizes, releasing the metal block. Under the restoring force of the spring, the connecting bracket drives the third rack to rotate, forcing the pawl to engage with the ratchet under the action of the torsion spring. This mechanism can instantly lock the transmission chain, effectively resisting the vibration and impact generated during motor testing and preventing any displacement of the positioning block. This rigid locking mechanism greatly enhances the stability of the clamping system, completely avoiding the decrease in clamping force or loosening of position due to vibration, further ensuring the accuracy of test data and the safety and reliability of the testing process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the structural separation of the base and positioning block of this utility model; Figure 3 This is a schematic diagram of the limiting mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the first and second racks of this utility model; Figure 5 This is a schematic diagram of the structure of the mounting rod and mounting tube of this utility model; Figure 6 This is a schematic diagram of the anti-loosening mechanism of this utility model.

[0014] In the diagram: 1. Base; 2. Positioning block; 3. Limiting mechanism; 301. First push rod; 302. Second push rod; 303. First rack; 304. First gear; 305. Mounting rod; 306. Second rack; 307. Second gear; 308. Mounting tube; 309. First bevel gear; 310. Second bevel gear; 311. Drive rod; 4. Anti-loosening mechanism; 401. Ratchet; 402. Pawl; 403. Rotating rod; 404. Torsion spring; 405. Third gear; 406. Third rack; 407. Connecting frame; 408. Slide rod; 409. Spring; 410. Metal block; 411. Solenoid; 412. Power supply device. Detailed Implementation

[0015] 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.

[0016] Example 1: Please see Figure 1-4 This utility model provides a technical solution: a locomotive traction motor tester, including a base 1. The base 1 is provided with four sets of symmetrically distributed positioning blocks 2. The base 1 is provided with a limiting mechanism 3 for adjusting the position of the four sets of positioning blocks 2. Two sets of symmetrically distributed first push rods 301 and two sets of symmetrically distributed second push rods 302 are slidably installed on the base 1. The two sets of first push rods 301 and second push rods 302 are vertically distributed. The four sets of positioning blocks 2 are slidably sleeved with a corresponding set of first push rods 301 and second push rods 302. The four sets of positioning blocks 2 are divided into two groups in space, X-axis and Y-axis directions, by respectively sleeved with the first push rods 301 and second push rods 302. The subsequent transmission mechanism will drive the linear movement of these push rods to finally realize the linkage of the four sets of positioning blocks 2, laying the structural foundation for the precise alignment of the motor.

[0017] The limiting mechanism 3 also includes a mounting tube 308 and a mounting rod 305 rotatably mounted in the base 1. The mounting rod 305 passes through the mounting tube 308 and is slidably sleeved with the mounting tube 308. A drive rod 311 is rotatably mounted in the base 1 and is perpendicular to the mounting tube 308. The base 1 is provided with an anti-loosening mechanism 4 for locking the mounting rod 305 and the drive rod 311. The mounting rod 305 and the mounting tube 308 serve as the central transmission shafts of the two stages and are the direct objects for inputting driving force and making precise adjustments. The drive rod 311 is used to provide another transmission input method. The presence of the anti-loosening mechanism 4 ensures that these transmission shafts will not be accidentally rotated by external forces such as vibration after adjustment or during testing, thereby ensuring the stability of the positioning state. This is a prerequisite for achieving "absolute synchronization" and "eliminating the problem of misalignment".

[0018] Each of the two sets of first push rods 301 is fixedly mounted with a first rack 303. A first gear 304 is provided between the two sets of first racks 303. The first gear 304 meshes with the two sets of first racks 303 respectively. The first gear 304 is rotatably connected to the machine base 1 through a mounting rod 305. Each of the two sets of second push rods 302 is fixedly mounted with a second rack 306. A second gear 307 is provided between the two sets of second racks 306. The second gear 307 meshes with the two sets of second racks 306 respectively. The second gear 307 is rotatably connected to the machine base 1 through a mounting tube 308. A first bevel gear 309 is sleeved on the mounting tube 308. A second bevel gear 310 is sleeved on the drive rod 311. The first bevel gear 309 meshes with the second bevel gear 310. When the mounting rod 305 is rotated, the first gear 304 is directly driven to rotate. Since the first gear 304 meshes with both sets of first racks 303 simultaneously, it forces the two sets of first racks 306 to rotate. 3 and the first push rod 301 connected to them make precise, opposite linear movements towards or in the opposite direction, thereby achieving synchronous positioning of a pair of sides of the motor. Similarly, directly rotating the mounting tube 308 can drive the second gear 307 to control the movement of another pair of second push rods 302 in the same way. Through the transmission of the bevel gear set, rotating the drive rod 311 can also drive the mounting tube 308 to rotate. The central gear drives the racks on both sides to achieve absolute synchronization and symmetry of the movement of the push rods in the same group, fundamentally eliminating the problems of misalignment and non-alignment that are easily caused by manual independent adjustment.

[0019] Example 2: Please see Figure 5 , Figure 6The anti-loosening mechanism 4 includes two sets of ratchet wheels 401 symmetrically sleeved on the mounting rod 305 or the drive rod 311. Both sides of the mounting tube 308 and the mounting rod 305 are provided with pawls 402 corresponding to the ratchet wheels 401. The two sets of pawls 402 are respectively engaged with the corresponding ratchet wheels 401. Both sets of pawls 402 are rotatably connected to the base 1 via a rotating rod 403. A torsion spring 404 is sleeved on the rotating rod 403, and both ends of the torsion spring 404 are fixedly connected to the pawls 402 and the base 1, respectively. A third gear 405 is sleeved on the rotating rod 403. Two sets of third racks 406, engaged with the third gears 405, are slidably installed inside the base 1. A connecting frame 407 is slidably installed inside the base 1, and the connecting frame 407 is fixedly connected to the two sets of third racks 406. A sliding rod 40 is fixedly installed inside the base 1. 8. The connecting frame 407 is slidably sleeved with the slide rod 408. Two sets of symmetrically distributed springs 409 are sleeved on the slide rod 408. The two ends of the two sets of springs 409 are fixedly connected to the connecting frame 407 and the base 1, respectively. A metal block 410 is fixedly installed on the connecting frame 407. In the unlocked state, i.e., when the power is on, the solenoid 411 attracts the metal block 410, compresses the springs 409, and drives the third gear 405 to rotate through the connecting frame 407 and the third rack 406, thereby causing the pawl 402 to overcome the force of the torsion spring 404 and disengage from the ratchet 401. The transmission shaft can rotate freely for adjustment. When locking is required, the power is turned off, the solenoid 411 is demagnetized, and the restoring force of the springs 409 will push the connecting frame 407 and the metal block 410 to reset. The third gear 405 is driven to reverse through the third rack 406, releasing the control of the pawl 402. The pawl 402 swings back rapidly under the action of its own torsion spring 404, engages with the ratchet 401, and forms a mechanical interlock, thereby instantly locking the transmission chain and achieving rigid locking.

[0020] A solenoid 411 corresponding to the metal block 410 is fixedly installed inside the base 1. A power supply device 412 corresponding to the solenoid 411 is also fixedly installed inside the base 1. The solenoid 411 is electrically connected to the positive and negative poles of the power supply device 412. When energized, the solenoid 411 generates a magnetic field, attracting the metal block 410 and putting the mechanism in an "adjustable" unlocked state. When de-energized, the magnetic field disappears, and the mechanism automatically enters an "anti-loosening" locked state under the action of the spring 409. The automatic locking function of the mechanism after the motor is fixed and the power supply device 412 is turned off ensures test safety, effectively resists the vibration and impact generated during the motor test, prevents any displacement of the positioning block 2, and enhances the safety and reliability of the system.

[0021] 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.

[0022] 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 locomotive traction motor tester, comprising a base (1), characterized in that: The base (1) is provided with four sets of symmetrically distributed positioning blocks (2). The base (1) is provided with a limiting mechanism (3) for adjusting the position of the four sets of positioning blocks (2). Two sets of symmetrically distributed first push rods (301) and two sets of symmetrically distributed second push rods (302) are slidably installed on the base (1). The two sets of first push rods (301) and second push rods (302) are vertically distributed. The four sets of positioning blocks (2) are respectively slidably sleeved with a corresponding set of first push rods (301) and second push rods (302).

2. The locomotive traction motor tester according to claim 1, characterized in that: The limiting mechanism (3) also includes an installation tube (308) and an installation rod (305) rotatably installed in the base (1). The installation rod (305) passes through the installation tube (308) and is slidably sleeved with the installation tube (308). A drive rod (311) is rotatably installed in the base (1) and is perpendicular to the installation tube (308). The base (1) is provided with an anti-loosening mechanism (4) for locking the installation rod (305) and the drive rod (311).

3. The locomotive traction motor tester according to claim 1, characterized in that: A first rack (303) is fixedly installed on each of the two sets of first push rods (301). A first gear (304) is provided between the two sets of first racks (303). The first gear (304) meshes with the two sets of first racks (303) respectively. The first gear (304) is rotatably connected to the machine base (1) through the mounting rod (305). A second rack (306) is fixedly installed on each of the two sets of second push rods (302). A second gear (307) is provided between the two sets of second racks (306). The second gear (307) meshes with the two sets of second racks (306) respectively. The second gear (307) is rotatably connected to the machine base (1) through the mounting tube (308).

4. The locomotive traction motor tester according to claim 2, characterized in that: A first bevel gear (309) is sleeved on the mounting tube (308), and a second bevel gear (310) is sleeved on the drive rod (311). The first bevel gear (309) and the second bevel gear (310) are meshed together.

5. The locomotive traction motor tester according to claim 2, characterized in that: The anti-loosening mechanism (4) includes two sets of ratchet wheels (401) symmetrically sleeved on the mounting rod (305) or the drive rod (311). Both sides of the mounting tube (308) and the mounting rod (305) are provided with pawls (402) corresponding to the ratchet wheels (401). The two sets of pawls (402) are respectively engaged with the corresponding ratchet wheels (401). Both sets of pawls (402) are rotatably connected to the machine base (1) through the rotating rod (403). A torsion spring (404) is sleeved on the rotating rod (403). The two ends of the torsion spring (404) are respectively fixedly connected to the pawls (402) and the machine base (1). A third gear (405) is sleeved on the rotating rod (403).

6. The locomotive traction motor tester according to claim 1, characterized in that: Two sets of third racks (406) that mesh with the third gear (405) are slidably installed inside the base (1). A connecting frame (407) is slidably installed inside the base (1). The connecting frame (407) is fixedly connected to the two sets of third racks (406) respectively. A slide rod (408) is fixedly installed inside the base (1). The connecting frame (407) and the slide rod (408) are slidably sleeved. Two sets of symmetrically distributed springs (409) are sleeved on the slide rod (408). The two ends of the two sets of springs (409) are fixedly connected to the connecting frame (407) and the base (1) respectively. A metal block (410) is fixedly installed on the connecting frame (407).

7. The locomotive traction motor tester according to claim 1, characterized in that: The base (1) is fixedly installed with a solenoid (411) corresponding to the metal block (410), and the base (1) is fixedly installed with a power supply device (412) corresponding to the solenoid (411). The solenoid (411) is electrically connected to the positive and negative poles of the power supply device (412).

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