Multi-modulus testing device for testing Hall speed sensor

Abstract

The utility model provides a multi-modulus testing device for testing a Hall type speed sensor, which relates to the technical field of Hall type speed sensors and comprises a frame, a sensor body and a gear body. The adjusting assembly comprises a telescopic rod fixedly connected to the outer side of the frame, a positioning rod is slidably connected to the outer side of the telescopic rod, teeth are fixedly connected to one side of the positioning rod, a mounting plate is fixedly connected to the outer side of the frame, a worm gear is rotationally connected to the top end of the mounting plate, and a circular gear is fixedly connected to the top end of the worm gear; the self-adaptive clamping assembly comprises a two-way lead screw rotationally connected to the interior of the frame. By means of the design, accurate control over the position of the sensor is achieved, the gap between the sensor and the gear can be flexibly adjusted according to different testing requirements, and accurate induction of magnetic field changes and stable output of signals are ensured.

Description

Technical Field

[0001] This utility model relates to the field of Hall effect speed sensor technology, and in particular to a testing device for testing multiple moduli of Hall effect speed sensors. Background Technology

[0002] In my country's rail transit, the working principle of Hall speed sensor is that when the metal teeth pass through the front end of Hall sensor, they will cause a change in magnetic field. Hall element can sensitively detect this change in magnetic field and convert it into an alternating electrical signal. The built-in circuit of sensor then amplifies and shapes the signal and finally outputs a good rectangular pulse signal. In practical applications, a gap is required between the gear and the sensor to ensure that the sensor can accurately sense the change in magnetic field.

[0003] When testing the performance of Hall effect speed sensors, different actual working conditions require the use of gears with different modules to simulate them. However, most existing gear devices can only be adapted to gears with a single module. If Hall effect speed sensors with different modules are to be tested, the entire gear device needs to be replaced frequently. This process is cumbersome, not only consuming a lot of time and manpower, but also seriously affecting the testing efficiency.

[0004] Therefore, this utility model provides a testing device for testing various moduli of Hall effect speed sensors. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a testing device for multiple modulus values ​​of Hall effect speed sensors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a testing device for multiple moduli of a Hall effect speed sensor, comprising a frame, a sensor body, and a gear body;

[0007] An adjustment assembly includes a telescopic rod fixedly connected to the outside of a frame, a positioning rod slidably connected to the outside of the telescopic rod, teeth fixedly connected to one side of the positioning rod, a mounting plate fixedly connected to the outside of the frame, a worm gear rotatably connected to the top of the mounting plate, and a circular gear fixedly connected to the top of the worm gear.

[0008] An adaptive clamping assembly includes a bidirectional lead screw rotatably connected inside a frame. The two outer ends of the bidirectional lead screw are threaded with moving blocks. The outer sides of the moving blocks are rotatably connected with connecting rods. The adjacent ends of the two connecting rods are rotatably connected with clamping plates.

[0009] In a preferred embodiment, a rotating column is rotatably connected to the outer side of the frame, and a worm gear is fixedly connected to the outer side of the rotating column.

[0010] In a preferred embodiment, the worm gear and the worm are meshed together, and the teeth are meshed together with the spur gear.

[0011] In a preferred embodiment, the outer side of the sensor body is mounted on the top of the adjustment assembly, and the outer side of the sensor body is slidably connected to the inside of the frame.

[0012] In a preferred embodiment, a protruding plate is fixedly connected to the outer side of the card plate, and a rotating groove is formed on the outer side of the bidirectional lead screw.

[0013] In a preferred embodiment, the outer side of the convex plate engages with the interior of the gear body.

[0014] In one preferred embodiment, one of the convex plates engages with the protrusion of the gear body slot.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. By rotating the rotating column, the worm gear is driven, which meshes with the worm wheel to drive the top sprocket to rotate synchronously. The sprocket meshes with the teeth of the positioning rod to form a gear and rack, which can drive the positioning rod to make fine displacement along the axial direction of the telescopic rod, thereby pushing the sensor body to make fine adjustments within the frame. This design achieves precise control of the sensor position and can flexibly adjust the gap between the sensor and the gear according to different testing requirements, ensuring accurate sensing of magnetic field changes and stable signal output.

[0017] 2. When installing the gear body, by rotating the groove of the double-acting lead screw, its reverse thread structure drives the moving blocks at both ends to move in opposite directions. The moving blocks are driven by the hinge of the connecting rod, which pushes the two sets of clamping plates to move synchronously towards the center, thereby driving the convex plate to form a three-point positioning clamp with the groove of the gear body. This design achieves adaptive clamping and precise positioning of gears with different modules, without the need to frequently replace the entire gear device, which greatly improves testing efficiency, reduces operation time and labor costs, and effectively solves the problem of cumbersome operation and low efficiency caused by frequent replacement of gear devices in the background technology. Attached Figure Description

[0018] Figure 1 A perspective view of a multi-modulus testing device for a Hall effect speed sensor provided by this utility model;

[0019] Figure 2 A schematic diagram of the positioning rod structure of a multi-modulus testing device for a Hall effect speed sensor provided by this utility model;

[0020] Figure 3A schematic diagram of the adjustment component structure of a multi-modulus testing device for testing Hall effect speed sensors provided by this utility model;

[0021] Figure 4 A schematic diagram showing the structural breakdown of the adjustment component of a multi-modulus testing device for a Hall effect speed sensor provided by this utility model;

[0022] Figure 5 A schematic diagram of a bidirectional lead screw structure for a multi-modulus testing device for a Hall effect speed sensor provided by this utility model;

[0023] Figure 6 This invention provides a schematic diagram of the adaptive clamping assembly structure of a multi-modulus testing device for testing Hall effect speed sensors.

[0024] Legend:

[0025] 1. Framework;

[0026] 2. Adjustment assembly; 21. Positioning rod; 22. Telescopic rod; 23. Gear; 24. Circular gear; 25. Mounting plate; 26. Worm gear; 27. Rotating column; 28. Worm;

[0027] 3. Adaptive clamping assembly; 31. Bidirectional lead screw; 32. Moving block; 33. Connecting rod; 34. Clamping plate; 35. Protruding plate; 36. Rotary groove;

[0028] 4. Sensor body; 5. Gear body. Detailed Implementation

[0029] 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.

[0030] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a testing device for multiple moduli of a Hall effect speed sensor, including a frame 1, a sensor body 4, and a gear body 5;

[0031] Adjustment component 2 includes a telescopic rod 22 fixedly connected to the outside of frame 1, a positioning rod 21 slidably connected to the outside of telescopic rod 22, a sensor body 4 mounted on the top of the positioning rod 21 on the outside, a tooth 23 fixedly connected to one side of the positioning rod 21, a mounting plate 25 fixedly connected to the outside of frame 1, a worm gear 26 rotatably connected to the top of the mounting plate 25, a spur gear 24 fixedly connected to the top of the worm gear 26, a rotating column 27 rotatably connected to the outside of frame 1, a worm 28 fixedly connected to the outside of the rotating column 27, the worm gear 26 and the worm 28 being meshed, and the tooth 23 and the spur gear 24 being meshed.

[0032] Frame 1 serves as the basic support structure of the entire testing device, providing mounting and fixing positions for the sensor body 4, gear body 5, and adjustment components 2, ensuring that each component can stably maintain its relative positional relationship during testing. The sensor body 4 is the core component of the Hall effect speed sensor, used to detect changes in the magnetic field generated when the gear body 5 rotates. When the gear body 5 rotates, its teeth pass through the sensor body 4, changing the surrounding magnetic field distribution. The sensor body 4 senses this magnetic field change and converts it into an electrical signal, thereby measuring the gear speed. The gear body 5 is the source of the magnetic field change, simulating the motion of the object being tested in a real-world working scenario through its own rotation. The teeth of the gear body 5 pass through the sensor body 4... When the magnetic field changes, the sensor body 4 generates a corresponding electrical signal, thereby enabling the testing of the speed of gears with different module numbers. The telescopic rod 22 is fixedly connected to the frame 1 and slidably connected to the positioning rod 21. It can change its own length, thereby driving the positioning rod 21 and the sensor body 4 mounted on the top of the positioning rod 21 to move within a certain range, achieving coarse adjustment of the position of the sensor body 4. The top of the positioning rod 21 is used to mount the sensor body 4, and through the sliding connection with the telescopic rod 22 and the meshing connection between its own tooth 23 structure and the spur gear 24, fine adjustment of the position of the sensor body 4 can be achieved. The position can be coarsely adjusted under the drive of the telescopic rod 22, and finely adjusted under the meshing drive of the spur gear 24. Fixedly connected to one side of the positioning rod 21, it meshes with the spur gear 24. When the spur gear 24 rotates, the meshing of the teeth 23 with the spur gear 24 drives the positioning rod 21 and the sensor body 4 to make slight displacements, thereby achieving fine adjustment of the position of the sensor body 4. The mounting plate 25 is fixedly connected to the outside of the frame 1, mainly used to install the worm gear 26, providing a stable mounting base for the worm gear 26, so that the worm gear 26 can rotate stably during the test. The top of the worm gear 26 is fixedly connected to the spur gear 24, and it is rotatably connected to the mounting plate 25 and meshes with the worm 28. When the worm 28 rotates, the meshing of the worm 28 with the worm gear 26 drives the worm gear 26 to rotate, thereby driving the spur gear 24 to rotate. The spur gear 24 is fixed. The worm gear 24 is connected to the top of the worm wheel 26 and meshes with the teeth 23 on the positioning rod 21. When the spur gear 24 rotates, the meshing of the teeth 23 with the spur gear 24 precisely drives the positioning rod 21 and the sensor body 4 to make fine adjustments to their positions. The rotating column 27 is rotatably connected to the outside of the frame 1, and the worm 28 is fixedly connected to the outside. By manually or by power driving the rotating column 27 to rotate, the worm 28 can be driven to rotate, and then the worm wheel 26 and the worm 28 drive the spur gear 24 to rotate. The worm 28 is fixedly connected to the outside of the rotating column 27 and meshes with the worm wheel 26. When the rotating column 27 rotates, it drives the worm 28 to rotate. Through the meshing of the worm 28 with the worm wheel 26, the rotation is transmitted to the worm wheel 26, and then the spur gear 24 rotates.

[0033] like Figure 1 , Figure 5 and Figure 6 As shown, the adaptive clamping assembly 3 includes a bidirectional lead screw 31 rotatably connected inside the frame 1. The two outer ends of the bidirectional lead screw 31 are threaded with moving blocks 32. The outer sides of the moving blocks 32 are rotatably connected with connecting rods 33. The near ends of the two connecting rods 33 are rotatably connected with clamping plates 34. The outer side of the clamping plate 34 is fixedly connected with a protruding plate 35. The outer side of the protruding plate 35 engages with the inside of the gear body 5. One of the protruding plates 35 engages with the groove protrusion of the gear body 5. A rotating groove 36 is opened on the outer side of the bidirectional lead screw 31.

[0034] The bidirectional lead screw 31 is the core transmission component of the entire adaptive clamping assembly 3. Through its own rotation, it drives the moving blocks 32 to move within the frame 1 via the threaded structure at both ends. Because it is a bidirectional lead screw 31, the threads at both ends are in opposite directions, allowing the two moving blocks 32 to move in opposite directions or towards each other when the lead screw rotates. The moving blocks 32 are threadedly connected to both ends of the bidirectional lead screw 31. When the bidirectional lead screw 31 rotates, the moving blocks 32 move along the axial direction of the lead screw. As a connecting component of the connecting rod 33, its own movement drives the connecting rod 33 to move, thereby changing the position of the clamping plate 34. The connecting rod 33 is rotatably connected to the outside of the moving blocks 32, and its two ends are rotatably connected to the clamping plate 34 at their closest points. When the moving blocks 32 move, the length and angle of the connecting rod 33 change accordingly. Changes will occur, causing the clamping plate 34 to move closer to or away from the gear body 5. The clamping plate 34 is connected to the connecting rod 33 and is a component that directly contacts the gear body 5. When the connecting rod 33 moves the clamping plate 34, the clamping plate 34 can bring the gear body 5 closer. The protruding plate 35 is fixedly connected to the outside of the clamping plate 34 and engages with the internal groove of the gear body 5. The shape of the protruding plate 35 matches the groove inside the gear body 5. One of the protruding plates 35 engages with the protrusion of the groove in the gear body 5, thereby achieving precise positioning and fixing of the gear body 5. The rotating groove 36 is opened on the outside of the bidirectional lead screw 31 to provide space for the rotation of the bidirectional lead screw 31. The rotating groove 36 can accommodate other components, such as rotating tools or connecting components, to facilitate the installation and driving of the bidirectional lead screw 31.

[0035] like Figure 1 - Figure 6 As shown:

[0036] In use: First, rotate the rotating column 27. Through the meshing transmission of the worm gear 28 and the worm wheel 26, the top sprocket 24 is driven to rotate synchronously. The sprocket 24 and the teeth 23 of the positioning rod 21 form a gear and rack mesh, which can drive the positioning rod 21 to make fine displacement along the axial direction of the telescopic rod 22, thereby pushing the sensor body 4 to make fine adjustments within the frame 1. Secondly, during installation, by rotating the groove 36 of the bidirectional lead screw 31, its reverse thread structure is used to drive the moving blocks 32 at both ends to move in opposite directions. The moving blocks 32 are driven by the hinge transmission of the connecting rod 33, which can push the two sets of clamping plates 34 to move synchronously towards the center, thereby driving the convex plate 35 and the groove of the gear body 5 to form a three-point positioning clamp.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A testing device for multiple moduli of a Hall effect speed sensor, characterized in that, Including frame (1), sensor body (4) and gear body (5); Adjusting assembly (2), the adjusting assembly (2) includes telescopic rod (22) fixedly connected on the outside of frame (1), the outside of telescopic rod (22) is slidably connected with positioning rod (21), one side of positioning rod (21) is fixedly connected with tooth (23), the outside of frame (1) is fixedly connected with mounting plate (25), the top of mounting plate (25) is rotatably connected with worm wheel (26), the top of worm wheel (26) is fixedly connected with round gear (24); Self-adapting clamping assembly (3), the self-adapting clamping assembly (3) includes bidirectional screw rod (31) rotatably connected in the inside of frame (1), the outside of bidirectional screw rod (31) is threadedly connected with moving block (32) at both ends, the outside of moving block (32) is rotatably connected with connecting rod (33), the proximal end of two connecting rods (33) is rotatably connected with clamping plate (34).

2. A test Hall effect speed sensor multi-mode test apparatus as defined in claim 1, wherein: The outside of frame (1) is rotatably connected with rotating column (27), the outside of rotating column (27) is fixedly connected with worm (28).

3. A test device for testing a plurality of Hall effect speed sensors according to claim 1, wherein: The worm wheel (26) and worm (28) are meshed connection, the tooth (23) and round gear (24) are meshed connection.

4. The test Hall effect speed sensor multi-site tester of claim 1 wherein: The outside of sensor body (4) is installed on the top of positioning rod (21), the outside of sensor body (4) is slidably connected in the inside of frame (1).

5. The test Hall effect speed sensor multiple mode test apparatus of claim 1 wherein: The outside of clamping plate (34) is fixedly connected with convex plate (35), the outside of bidirectional screw rod (31) is provided with rotating groove (36).

6. A test Hall effect speed sensor multi-die test apparatus as claimed in claim 5, wherein: The outside of convex plate (35) is engaged with the inside of gear body (5).

7. A test Hall effect speed sensor multi-die test apparatus as described in claim 5, wherein: One of the convex plate (35) and gear body (5) is engaged with the protruding part of the slot.

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