Passive wheel speed sensor testing device

Abstract

The utility model discloses a passive wheel speed sensor testing device. The passive wheel speed sensor testing device comprises a support and a fixing table erected on the support, a manual sliding table module is arranged on the upper end face of the fixing table, a manual rocking handle is arranged at the right end of the manual sliding table module, an upper fixing seat is arranged on a sliding block of the manual sliding table module, and a left side plate is arranged on the upper fixing seat; a mounting hole is formed in the left side plate; a motor is arranged below the fixed table; a motor shaft part of the motor is connected with an outer gear; a digital display vernier fixed on the front side of the bracket is sleeved on the caliper; the caliper is provided with a left measuring jaw and a right measuring jaw. The right measuring jaw and the digital display vernier are fixedly arranged on the support, and the caliper can move in the X-axis direction relative to the digital display vernier and the right measuring jaw. The air gap adjusting device can effectively solve the problems that when an existing passive wheel speed sensor is used for testing, air gap adjusting is completed by increasing or decreasing gaskets between the passive wheel speed sensor and a testing table, time and labor are not consumed enough, and precision is not high.

Description

Technical Field

[0001] The utility model relates to the field of wheel speed sensor processing, in particular to a passive wheel speed sensor testing device. Background Art

[0002] The probe heights of passive sensors are different, and the working air gap needs to be adjusted during testing. The existing testing method is to add or remove shims between the passive wheel speed sensor probe and the test bench to adjust the air gap. The adjustment is time-consuming and labor-intensive, and the accuracy is not high. Utility Model Content

[0003] The utility model aims to provide a passive wheel speed sensor testing device to solve the problem that when testing the existing passive wheel speed sensor, the air gap is adjusted by adding or removing gaskets between the passive wheel speed sensor and the test bench, which is time-consuming and labor-intensive and has low accuracy.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a passive wheel speed sensor testing device, comprising a bracket, a fixed platform mounted on the bracket, a manual slide module arranged along the X-axis direction is arranged on the upper surface of the fixed platform, a manual crank is arranged on the right end of the manual slide module, an upper fixed seat that can slide along the X-axis direction is arranged on the slider of the manual slide module, and a left side plate that is vertically downward is arranged at the end of the upper fixed seat away from the manual crank; a mounting hole that is matched with the wheel speed sensor probe part is arranged on the left side plate; a motor is arranged under the fixed platform, and an external gear that can rotate horizontally with the motor is connected to the motor shaft, and the external gear is matched with the mounting hole; and a caliper is also included, and a digital display vernier fixed on the front side of the bracket is sleeved on the caliper; a left measuring jaw is fixedly arranged on one end of the caliper facing the left side plate, and a right measuring jaw is sleeved on the caliper located between the left measuring jaw and the vernier; an outer wall of one side of the right measuring jaw and the digital display vernier is fixedly arranged on the bracket, and the caliper can move in the X-axis direction relative to the digital display vernier and the right measuring jaw.

[0005] Furthermore, the caliper body is provided with scale lines, and when the top end of the wheel speed sensor probe in the mounting hole is tangent to the outer end face of the external gear, the value of the digital display cursor is an initial value of 0.

[0006] In order to adjust the air gap between the wheel speed sensor probe and the outer end face of the external gear and then lock it to ensure the reliability of the test data, the manual slide module is provided with a screw locking handle at one end of the manual crank.

[0007] In order to improve the stability of the dimension when it is translated left and right along the X-axis direction, the top of the left measuring jaw is connected to the bottom end face of the fixed seat, and a guide groove is provided on the bottom end face of the fixed seat. The top of the right measuring jaw can be slidably set in the guide groove; the top height of the digital display cursor is lower than the bottom end face of the fixed seat.

[0008] In order to facilitate reading of data on the digital display cursor, a fixed block is arranged on the front side of the fixed platform, and the right measuring claw and the inner wall of the rear side of the digital display cursor are fixed on the front outer wall of the fixed block; the claws of the left measuring claw and the right measuring claw are arranged downward.

[0009] In order to further improve the stability of the caliper X-axial translation, an end guide block is also provided on the fixed block. The end guide block is provided with a guide flat hole adapted to the caliper. The end of the caliper away from the left measuring jaw is sleeved in the end guide block through the guide flat hole.

[0010] The beneficial effects of the utility model are as follows: through the cooperation of the caliper, the vernier, the left side plate, the left measuring jaw, the right measuring jaw and the manual slide module, the air gap value between the top of the wheel speed sensor probe to be tested assembled in the mounting hole on the left side plate and the outer end face of the external gear can be accurately adjusted. The whole process is simple to operate, fast and convenient, and can solve the problem that when testing the existing passive wheel speed sensor, the air gap is adjusted by adding or removing gaskets between the passive wheel speed sensor and the test bench, which is time-consuming, labor-intensive and has low accuracy.

[0011] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The figure is a schematic diagram of the structure of the utility model, in which the slider and fixed block, the end guide block and the motor of the manual slide module are omitted.

[0013] Among them, 1. bracket, 2. fixed platform, 3. manual slide module, 4. manual crank, 5. upper fixed seat, 6. left side plate, 7. mounting hole, 8. wheel speed sensor probe, 9. external gear, 10. caliper, 11. digital display vernier, 12. left measuring jaw, 13. right measuring jaw, 14. screw locking handle. DETAILED DESCRIPTION

[0014] Examples, such as Figure 1A passive wheel speed sensor test device is shown, comprising a bracket 1, a fixed platform 2 mounted on the bracket 1, a manual slide module 3 arranged along the X-axis is arranged on the upper end surface of the fixed platform 2, a manual crank 4 is arranged at the right end of the manual slide module 3, an upper fixed seat 5 which can slide along the X-axis is arranged on the slider of the manual slide module 3, and a left side plate 6 facing vertically downward is arranged at the end of the upper fixed seat 5 away from the manual crank 4; a mounting hole 7 adapted to the wheel speed sensor probe 8 is arranged on the left side plate 6; a motor is arranged under the fixed platform 2, The motor shaft is connected to an external gear 9 that can rotate horizontally therewith, and the external gear 9 is adapted to the mounting hole 7; it also includes a caliper 10, on which is mounted a digital display vernier 11 fixed to the front side of the bracket 1; a left measuring jaw 12 is fixedly provided at one end of the caliper 10 facing the left side plate 6, and a right measuring jaw 13 is mounted between the left measuring jaw 12 and the vernier of the caliper 10; the right measuring jaw 13 and one side outer wall of the digital display vernier 11 are fixedly provided on the bracket 1, and the caliper 10 can perform X-axis movement relative to the digital display vernier 11 and the right measuring jaw 13.

[0015] The caliper 10 is provided with scale lines. When the top of the wheel speed sensor probe in the mounting hole 7 is tangent to the outer end face of the outer gear 9, the value of the digital display cursor 11 is the initial value 0. The structure can be changed so that when the initial value is 0, the left measuring jaw 12 and the right measuring jaw 13 fit together. The tangent here is the degree of air gap between them that just does not interfere with the rotation of the outer gear 9.

[0016] In order to adjust the air gap between the wheel speed sensor probe and the outer end surface of the outer gear 9 and then lock it to ensure the reliability of the test data, the manual slide module 3 is provided with a screw locking handle 14 at one end of the manual crank 4.

[0017] The top of the left measuring jaw 12 is connected to the bottom end face of the fixing seat. The bottom end face of the fixing seat is provided with a guide groove. The top of the right measuring jaw 13 is slidably arranged in the guide groove. The top height of the digital display cursor 11 is lower than the bottom end face of the fixing seat.

[0018] A fixed block is provided at the front side of the fixed platform 2, and the right measuring jaw 13 and the rear inner wall of the digital display cursor 11 are fixedly provided on the front outer wall of the fixed block; the left measuring jaw 12 and the right measuring jaw 13 are provided with the claws facing downward. A terminal guide block is also provided on the fixed block, and a guide flat hole matching the caliper 10 is provided on the terminal guide block, and the terminal of the caliper 10 away from the left measuring jaw 12 is sleeved in the terminal guide block through the guide flat hole.

[0019] Working principle:

[0020] First, it needs to be assembled into the mounting hole through the standard parts, and the initial value of the vernier tooth is set when the probe of the standard parts is driven to be tangent to the external gear.

[0021] During the test, the manual slide module is driven by the manual crank, and the left side plate is moved by the slider on the manual slide module, so that the left measuring claw and caliper on the left side plate move to the right until the digital display cursor shows 0, thus achieving zeroing. After the digital display cursor is zeroed, the wheel speed sensor probe is assembled in the mounting hole, and the socket end of the wheel speed sensor is connected to the plug-in that receives the signal on the test bench, and then the test program of the test bench is started. The outer gear is driven to rotate by starting the motor, and the front side plate is driven to move to the left by the slider on the manual slide module until the digital display cursor shows the required value. At this time, the air gap between the wheel speed sensor probe and the outer end face of the outer gear reaches the air gap required for the test, and then the manual slide module is locked by the screw locking handle to lock the air gap between the wheel speed sensor probe and the outer end face of the outer gear, and the test is started. The wheel speed sensor probe is composed of a magnetic conductor and a coil. The concave and convex surface of the external gear passes through the magnetic conductor, causing the magnetic field inside the probe to change, and outputs a signal to the test bench. The test bench receives and analyzes information such as signal strength, external gear speed, signal rise and fall changes, and outputs the test results.

[0022] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A passive wheel speed sensor testing device, characterized in that: It includes a bracket, a fixed platform mounted on the bracket, a manual slide module arranged along the X-axis is arranged on the upper surface of the fixed platform, a manual handle is arranged on the right end of the manual slide module, an upper fixed seat that can slide along the X-axis is arranged on the slider of the manual slide module, and a left side plate that is vertically downward is arranged at the end of the upper fixed seat away from the manual handle; a mounting hole that matches the wheel speed sensor probe is arranged on the left side plate; a motor is arranged under the fixed platform, and an external gear that can rotate horizontally with the motor is connected to the motor shaft, and the external gear is matched with the mounting hole; it also includes a caliper, and a digital display vernier fixed on the front side of the bracket is sleeved on the caliper; a left measuring jaw is fixedly arranged on one end of the caliper facing the left side plate, and a right measuring jaw is sleeved on the caliper located between the left measuring jaw and the vernier; The right measuring jaw and the digital display vernier are fixedly arranged on the bracket, and the caliper can perform X-axis movement relative to the digital display vernier and the right measuring jaw.

2. The passive wheel speed sensor testing device according to claim 1, characterized in that: The caliper body is provided with scale lines. When the top of the wheel speed sensor probe in the mounting hole is tangent to the outer end face of the external gear, the value of the digital display cursor is the initial 0 value.

3. The passive wheel speed sensor testing device according to claim 2, characterized in that: The manual slide module is provided with a screw locking handle at one end of the manual crank.

4. The passive wheel speed sensor testing device according to claim 3, characterized in that: The top of the left measuring jaw is connected to the bottom end face of the fixed seat, the bottom end face of the fixed seat is provided with a guide groove, and the top of the right measuring jaw can be slidably arranged in the guide groove; the top height of the digital display cursor is lower than the bottom end face of the fixed seat.

5. The passive wheel speed sensor testing device according to claim 4, characterized in that: A fixed block is arranged at the front side of the fixed platform, and the right measuring claw and the rear inner wall of the digital display cursor are fixedly arranged on the front outer wall of the fixed block; the claws of the left measuring claw and the right measuring claw are arranged downward.

6. The passive wheel speed sensor testing device according to claim 5, characterized in that: The fixed block is also provided with a terminal guide block, which is provided with a guide flat hole matched with the caliper, and the terminal of the caliper away from the left measuring claw is sleeved in the terminal guide block through the guide flat hole.

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