CN213658782U

CN213658782U - Non-contact velocimeter

Info

Publication number: CN213658782U
Application number: CN202023104950.9U
Authority: CN
Inventors: 谢修波; 丁珺; 时鸣; 尹霖麒; 章鸿; 高雄
Original assignee: Shanghai Motor Vehicle Testing Center Technology Co ltd
Current assignee: Shanghai Motor Vehicle Testing Center Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-07-09
Anticipated expiration: 2030-12-21

Abstract

The utility model discloses a non-contact velocimeter, which comprises a rotating device and a sensor mounting plate connected with the rotating device; the rotating device is provided with: the dividing disc is used for driving the sensor mounting plate to rotate; and the locking piece is used for locking after the indexing disc rotates in place. The utility model discloses can rotate on the horizontal plane, angle regulation is convenient, nimble.

Description

Non-contact velocimeter

Technical Field

The utility model belongs to the automobile inspection field, concretely relates to non-contact tachymeter.

Background

The automobile speed sensor needs to be calibrated to determine the accuracy and the effectiveness of the automobile speed sensor. The calibration of the automobile speed sensor belongs to the indispensable inspection project of the automobile detection industry. In this process, it is first necessary to have the speed-measured sensor in the correct test position of the detection wheel. In the prior art, a cantilever beam is adopted to install a measured speed sensor, and the measured speed sensor is adjusted to a test position by swinging the cantilever beam. The defects of the method are as follows: the test positions are determined approximately, cannot be accurate and cannot be centered (the limitation of the device); the position of the measured speed sensor can not be righted by rotating the angle in the horizontal plane; difficult, time consuming and time consuming adjustment.

SUMMERY OF THE UTILITY MODEL

In view of the problem that the position of a speed-measured sensor cannot be rotated by an angle in a horizontal plane to correct the position of the speed-measured sensor in the prior art, the utility model provides a non-contact velocimeter, which comprises a rotating device and a sensor mounting plate connected with the rotating device; the rotating device is provided with:

the dividing disc is used for driving the sensor mounting plate to rotate;

and the locking piece is used for locking after the indexing disc rotates in place.

Furthermore, the device also comprises a fixing device and a vertical guide rail which is arranged on the fixing device and can vertically move relative to the fixing device; the bottom end of the vertical guide rail is connected with the sensor mounting plate through a rotating device.

Further, the device also comprises a transverse guide rail; the transverse guide rail is arranged on the fixing device and can move transversely relative to the fixing device.

Further, the device also comprises a longitudinal guide rail; the fixing device is arranged on the longitudinal guide rail and moves longitudinally along the longitudinal guide rail.

Furthermore, the vertical guide rail, the transverse guide rail and the longitudinal guide rail are all ball-type guide rails and are matched with locking pieces; the locking piece is arranged on the fixing device and used for locking the ball-type guide rail on the fixing device after the ball-type guide rail moves in place.

Further, the device also comprises a support; the top of the supporting piece is connected with the longitudinal guide rail to play a supporting role.

Further, the quantity of support piece is 2, is connected with the both ends of longitudinal rail respectively.

Further, the height of the support member is greater than the length of the vertical guide rail; the bottom of the supporting piece is provided with a supporting seat.

Further, the angular resolution of the index plate is 0.1 °.

Furthermore, the sensor mounting plate is provided with a mounting hole corresponding to the measured speed sensor.

The utility model has the advantages that: the three-coordinate system is adopted to move the measured speed sensor, so that the measured speed sensor can be centered, the position is ensured to be accurate, and the calibrated accurate position is quickly found; can rotate on the horizontal plane; the adjustment is convenient, and the operation is simple and portable; the variety of the detection is more.

The present invention will be further described with reference to the accompanying drawings to fully illustrate the objects, technical features and technical effects of the present invention.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the non-contact velocimeter according to the present invention.

Detailed Description

The technical solution of the present invention is further described by the following specific examples. The following examples are further illustrative of the present invention and are not intended to limit the scope of the present invention.

Example 1

Fig. 1 shows a specific embodiment of the present invention. In this embodiment, the non-contact velocimeter comprises a rotating device 2, a sensor mounting plate 4, a fixing device 7, a vertical guide rail 9, a transverse guide rail 8, a longitudinal guide rail 1 and a support member 6.

The vertical guide 9 and the lateral guide 8 are provided on the fixture 7 to be vertically movable and laterally movable, respectively, with respect to the fixture 7. The fixing device 7 is arranged on the longitudinal guide 1 and can move longitudinally along the longitudinal guide 1, and the longitudinal guide 1 can also be considered to move relative to the fixing device 7. Locking elements 10 associated with the vertical 9, transverse 8 and longitudinal 1 rails, respectively, are provided on the fixing device 7 for locking these rails on the fixing device 7 after they have been moved into position relative to the fixing device 7. The vertical guide rails 9, the transverse guide rails 8 and the longitudinal guide rails 1 are all ball type guide rails.

The rotating device 2 is provided with an indexing disc 3 and a locking piece 5. The dividing disc 3 is used for driving the sensor mounting plate to rotate; the locking piece 5 is used for locking after the indexing disc is rotated into position. The angular resolution of the index plate 3 is 0.1 °.

The bottom end of the vertical guide 9 is connected with the sensor mounting plate 4 through the rotating device 2.

The top of the support member 6 is connected with the longitudinal guide rail 1 to play a role of support. The number of the supporting pieces 6 is 2, and the supporting pieces are respectively connected with two ends of the longitudinal guide rail 1. The height of the support 6 is greater than the length of the vertical guide 9 and also greater than the length of the vertical guide 9 after the sensor mounting plate 4 is attached. The bottom of 2 supports 6 all is provided with 1 supporting seat 11.

The sensor mounting plate 4 is provided with a mounting hole 12 corresponding to the measured speed sensor.

When the device works, a measured speed sensor is mounted on the sensor mounting plate 4 through the mounting hole 12, the index plate 3 is adjusted to enable the measured speed sensor to rotate along with the index plate 3 on the rotating device 2 to reach a required angle, and then the angle is locked by the locking piece 5; the speed sensor is adjusted to a calibration position (right facing the axis and the width center of the lower turntable) from three coordinate directions by adjusting the vertical guide rail 9, the transverse guide rail 8 and the longitudinal guide rail 1, and then the position is locked. The linear speed (standard speed) of the rotary table is received and displayed by the speed measurement sensor by utilizing laser reflection, and the displayed speed is compared with the standard speed to determine the performance of the speed measurement sensor.

Example 2

The angular resolution of the index plate 3 is 0.5. Otherwise, the procedure was as in example 1.

Example 3

The angular resolution of the index plate 3 is 0.01. Otherwise, the procedure was as in example 1.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A non-contact velocimeter is characterized by comprising a rotating device and a sensor mounting plate connected with the rotating device; the rotating device is provided with:

the dividing disc is used for driving the sensor mounting plate to rotate;

and the locking piece is used for locking after the indexing disc rotates to a proper position.

2. The non-contact velocimeter of claim 1, further comprising a fixture and a vertical guide disposed on the fixture for vertical movement relative to the fixture; the bottom end of the vertical guide rail is connected with the sensor mounting plate through the rotating device.

3. The non-contact velocimeter of claim 2, further comprising a transverse guide; the transverse guide rail is arranged on the fixing device and can move transversely relative to the fixing device.

4. The non-contact velocimeter of claim 3, further comprising a longitudinal guide; the fixing device is arranged on the longitudinal guide rail and can move longitudinally along the longitudinal guide rail.

5. The non-contact velocimeter of claim 4, wherein the vertical rail, the transverse rail and the longitudinal rail are ball-type rails and are equipped with locking members; the locking piece is arranged on the fixing device and used for locking the ball-type guide rail on the fixing device after the ball-type guide rail moves to a position relative to the fixing device.

6. The non-contact velocimeter of claim 4, further comprising a support; the top of the supporting piece is connected with the longitudinal guide rail to play a supporting role.

7. The non-contact velocimeter of claim 6, wherein the number of said support members is 2, respectively connected to both ends of said longitudinal rail.

8. The non-contact velocimeter of claim 7, wherein the height of the support member is greater than the length of the vertical guide rail; the bottom of the supporting piece is provided with a supporting seat.

9. The non-contact velocimeter of claim 1, wherein the angular resolution of the indexing disk is 0.1 °.

10. The non-contact velocimeter according to any one of claims 1 to 9, wherein the sensor mounting plate is provided with a mounting hole corresponding to the measured velocity sensor.