Non-contacting velocimeter calibration device

Abstract

The utility model provides a kind of non-contact speedometer calibration device, belong to speedometer calibration device technical field.The utility model provides a kind of non-contact speedometer calibration device, including synchronous wheel group, driving device and containing box;Synchronous wheel group is installed on the mounting base plate in containing box;Driving device is installed on the mounting base plate in containing box;Synchronous wheel group includes driving gear, passive gear and toothed belt;Driving gear and passive gear rotation setting are on mounting base plate;Driving gear is connected with the output end of driving device by coupling;Toothed belt is sleeved on the surface of driving gear and passive gear, and reflective strip is equipped on toothed belt;Driving gear is equipped with baffle on both sides;The toothed belt of this non-contact speedometer calibration device can rotate at high speed, speed range can be from very low to high speed, and by setting toothed belt, non-contact speedometer directly measures the speed of toothed belt surface, so that the accuracy of measurement in rotating process has been promoted.

Description

Technical Field

[0001] This utility model belongs to the technical field of speedometer calibration devices, and more specifically, it relates to a non-contact speedometer calibration device. Background Technology

[0002] A non-contact velocimeter is a device that uses non-contact measurement technology to detect the speed of an object. Its core principle is to calculate speed by measuring the reflected light or changes in the magnetic field on the object's surface, making it suitable for measuring high-speed moving objects.

[0003] Currently, there is a non-contact speedometer calibration device on the market, which includes a rotating speed measuring wheel with reflective strips. When the non-contact speedometer needs to be calibrated, it is placed on one side of the speed measuring wheel, and the wheel is started to rotate. The non-contact speedometer and the reflective strip work together to detect the speed of the speed measuring wheel. However, this calibration device is a single-wheel structure. When the speed measuring wheel rotates at high speed, the measurement accuracy of the non-contact speedometer is not high enough, which limits its application scenarios and makes it inconvenient for testing personnel to use.

[0004] In view of this, the inventor has applied for the invention of a non-contact speedometer calibration device. Utility Model Content

[0005] The purpose of this invention is to provide a non-contact speedometer calibration device to solve the technical problem that the measurement accuracy of the non-contact speedometer is not high enough when the speed measuring wheel of the existing calibration device rotates at high speed, thus limiting its application scenarios.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a non-contact speedometer calibration device, comprising: a synchronous pulley set, a drive device, and a housing; The synchronous pulley set is mounted on the mounting base plate inside the housing; The drive unit is mounted on a mounting base plate inside the housing; The synchronous pulley set includes a driving gear, a driven gear, and a toothed belt; The driving gear and the driven gear are rotatably mounted on the mounting base plate; The drive gear is connected to the output end of the drive device via a coupling; The toothed belt is sleeved on the surface of the driving gear and the driven gear, and the toothed belt is provided with reflective strips; Baffles are installed on both sides of the drive gear to prevent the toothed belt from detaching from the drive gear; The upper surface of the container is provided with a detection port, which is opposite to the toothed band, and a cover plate is hinged to the detection port. The cover plate is made of transparent material.

[0007] In one possible implementation, based on the above technical solutions, a mounting bracket is mounted on the mounting base plate, and the driving device is mounted on the mounting bracket.

[0008] In one possible implementation, based on the above technical solutions, a wheel support is mounted on the mounting base plate, and a first vertical bearing assembly and a second vertical bearing assembly are mounted on the wheel support. A drive shaft is mounted on the first vertical bearing assembly, and a drive gear is fixedly mounted on the drive shaft. A driven shaft is mounted on the second vertical bearing assembly, and a driven gear is fixedly mounted on the driven shaft.

[0009] In one possible implementation, based on the above technical solutions, one end of the passive axle is provided with a mounting head, a fan is threaded onto the mounting head, and an air inlet and an air outlet are respectively provided on both sides of the housing.

[0010] In one possible implementation, in conjunction with the above technical solutions, a socket box is also installed on the mounting base plate, and the socket box is provided with a first switch button and a first power connection port.

[0011] In one possible implementation, based on the above technical solutions, the socket box is electrically connected to an operation display box, the operation display box is electrically connected to a pedal, and the operation display box is also provided with a second switch button and a second power connection port.

[0012] In one possible implementation, based on the above technical solutions, a frequency converter is mounted on the mounting base plate, the frequency converter is electrically connected to the drive device, and the pedal controls the frequency converter, thereby controlling the speed of the drive device.

[0013] In one possible implementation, based on the above technical solutions, a plurality of support legs are installed on the bottom side of the mounting base plate to support the mounting base plate.

[0014] The advantages of this non-contact speedometer calibration device are as follows: Compared with the prior art, this device installs a synchronous pulley set on the mounting base plate, which includes a driving gear, a driven gear, and a toothed belt. The toothed belt is fitted onto the driving and driven gears, and a reflective strip is provided on the toothed belt. In use, the non-contact speedometer is placed directly above the toothed belt. At this time, the drive device drives the driving gear to rotate, which in turn drives the toothed belt to rotate, thereby ultimately driving the driven gear to rotate. The non-contact speedometer, in conjunction with the reflective strip, calculates the linear velocity or linear distance of the reflective strip, and then compares and calibrates it with the actual value. This non-contact speedometer calibration device can rotate at high speeds, with a speed range from extremely low to high speeds. Furthermore, by setting the toothed belt, the non-contact speedometer directly measures the linear velocity or linear distance on the surface of the toothed belt, which is closer to the actual measurement. The high-speed operation improves measurement accuracy during rotation. Furthermore, baffles on both sides of the drive gear prevent the toothed belt from detaching from the drive gear during high-speed rotation, ensuring smooth calibration. Additionally, a cover at the detection port prevents dust accumulation on the toothed belt during extended periods of inactivity, avoiding delays. The transparent cover allows for observation of the toothed belt's operation upon startup; if no abnormalities are found, calibration can begin, and adjustments can be made promptly if any issues arise. Observing the toothed belt through the cover enhances safety compared to not using one, and calibration of the speedometer can also be performed with the cover on. Calibration through the cover also reduces noise. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of the non-contact speedometer calibration device provided in this embodiment of the utility model; Figure 2 A schematic diagram of the non-contact speedometer calibration device provided in this embodiment of the utility model after removing the housing; Figure 3 for Figure 2 A schematic diagram of the mounting frame and wheel support of the non-contact speedometer calibration device provided in this utility model embodiment; Figure 4A schematic diagram of the structure of the non-contact speedometer calibration device provided in this embodiment of the present invention when the drive gear is mounted with a baffle. Figure 5 A schematic diagram of the operation display box of the non-contact speedometer calibration device provided in this embodiment of the utility model.

[0017] The labels for the attached figures are as follows: 100. Synchronizing pulley set; 110. Driving gear; 111. Baffle; 112. Coupling; 120. Driven gear; 130. Toothed belt; 200. Drive unit; 300. Housing box; 310. Mounting base plate; 311. Mounting frame; 312. Wheel support; 3121. First vertical bearing assembly; 3122. Second vertical bearing assembly; 3123. Driven wheel axle; 3124. Driven wheel axle; 3125. Mounting head; 313. Socket box; 3131. First switch button; 3132. First power connection port; 314. Inverter; 315. Support leg; 320. Detection port; 330. Air inlet; 340. Cover plate; 400. Operation display box; 410. Second switch button; 420. Second power interface; 500. Fan. Detailed Implementation

[0018] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] It should be further explained that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0020] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] The directional terms "inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0024] The present invention provides a non-contact speedometer calibration device.

[0025] like Figure 1 , Figure 2 and Figure 4As shown, this utility model provides a non-contact speedometer calibration device, including a synchronous pulley set 100, a drive device 200, and a housing 300; the synchronous pulley set 100 is mounted on a mounting base plate 310 inside the housing 300; the drive device 200 is mounted on the mounting base plate 310 inside the housing 300; the synchronous pulley set 100 includes a driving gear 110, a driven gear 120, and a toothed belt 130; the driving gear 110 and the driven gear 120 are rotatably mounted on the mounting base plate 310; the driving gear 110... 10 is connected to the output end of the drive device 200 via coupling 112; a toothed belt 130 is sleeved on the surface of the drive gear 110 and the driven gear 120, and a reflective strip is provided on the toothed belt 130; baffles 111 are installed on both sides of the drive gear 110 to prevent the toothed belt 130 from disengaging from the drive gear 110; a detection port 320 is opened on the upper end face of the receiving box 300, and the detection port 320 is opposite to the toothed belt 130; a cover plate 340 is hinged at the detection port 320, and the cover plate 340 is made of transparent material.

[0026] It should be noted that when calibrating the non-contact speed meter, it needs to be placed directly above the detection port 320 so that the non-contact speed meter can cooperate with the reflective strip on the toothed belt 130, thereby detecting the linear velocity or linear distance of the reflective strip. After the non-contact speed meter completes the detection, it will display the specific value. This value is compared with the actual value, and finally the non-contact speed meter is calibrated.

[0027] This utility model provides a non-contact speedometer calibration device. Compared with the prior art, this utility model installs a synchronous pulley set 100 on a mounting base plate 310, which includes a driving gear 110, a driven gear 120, and a toothed belt 130. The toothed belt 130 is fitted onto the driving gear 110 and the driven gear 120, and a reflective strip is provided on the toothed belt 130. In use, the non-contact speedometer is placed directly above the toothed belt 130. At this time, the driving device 200 drives the driving gear 110 to rotate, which drives the toothed belt 130 to rotate, thereby ultimately driving the driven gear 120 to rotate. The non-contact speedometer, in conjunction with the reflective strip, calculates and displays the current linear velocity or linear distance of the reflective strip, and then compares it with the actual value to complete the calibration of the non-contact speedometer. This non-contact speedometer calibration device can rotate at high speeds, with a speed range from extremely low to high speeds. Furthermore, by setting the toothed belt 130, the non-contact speedometer directly measures the surface of the toothed belt 130, which is closer to the real speed measurement scenario, thus improving the measurement accuracy during rotation. In addition, by setting a cover plate 340 at the detection port, if the calibration device is not used for a long time, the cover plate 340 can be covered to prevent dust from accumulating on the toothed belt 130 due to long-term disuse, which would delay the next use. Moreover, the cover plate 340 is made of transparent material, so each time it is started, the operation of the toothed belt 130 can be observed through the cover plate 340. If there is no abnormality, the calibration work can begin. If there is an abnormality, it can be adjusted in time. Observing the toothed belt 130 through the cover plate 340 also improves safety compared to not setting the cover plate 340, and the speedometer can also be calibrated with the cover plate 340 on. If calibration is performed through the cover plate 340, it can also reduce some noise.

[0028] It should be noted that when the driving gear 110 starts to rotate, the toothed belt 130 may detach from the driving gear 110 or the driven gear 120. Therefore, baffles 111 are installed on both sides of the driving gear 110 by fasteners. Figure 4 As shown, this is to prevent the toothed belt 130 from falling off during the rotation of the driving gear 110 and the driven gear 120.

[0029] like Figure 3 As shown, in some embodiments, a mounting bracket 311 is mounted on the mounting base plate 310, and the drive device 200 is mounted on the mounting bracket 311.

[0030] like Figure 2 and Figure 3As shown, in some embodiments, a wheel support 312 is mounted on the mounting base plate 310, a first vertical bearing assembly 3121 and a second vertical bearing assembly 3122 are mounted on the wheel support 312, a drive shaft 3123 is mounted on the first vertical bearing assembly 3121, a drive gear 110 is fixedly mounted on the drive shaft 3123, and a driven shaft 3124 is mounted on the second vertical bearing assembly 3122, a driven gear 120 is fixedly mounted on the driven shaft 3124.

[0031] like Figure 2 As shown, in some embodiments, one end of the passive wheel axle 3124 is provided with a mounting head 3125, and a fan 500 is threadedly connected to the mounting head 3125. An air inlet (330) and an air outlet are respectively opened on both sides of the housing 300.

[0032] In addition, when the drive unit 200 runs at high speed and the drive gear 110 and driven gear 120 rotate at high speed, a large amount of heat will be generated inside the housing 300. In order to cool down the inside of the housing 300, a fan 500 is installed at the end of the driven shaft 3124, and an air inlet 330 and an air outlet are opened at the corresponding positions on the housing 300. When the driven shaft 3124 starts to rotate, it will drive the fan 500 to rotate together. As long as the driven shaft 3124 rotates, the fan 500 will rotate, thereby enabling timely heat dissipation inside the housing 300.

[0033] like Figure 3 As shown, in some embodiments, a socket box 313 is also installed on the mounting base plate 310, and the socket box 313 is provided with a first switch button 3131 and a first power connection port 3132.

[0034] Specifically, the first power interface 3132 is used to connect to an external power source, and the first switch button 3131 is used to control whether the drive device 200 is started. The drive device 200 is a servo motor.

[0035] like Figure 5 As shown, in some embodiments, the socket box 313 is electrically connected to the operation display box 400, the operation display box 400 is electrically connected to the pedal, and the operation display box 400 is also provided with a second switch button 410 and a second power interface 420.

[0036] Specifically, the second power port 420 is used for external power supply, and the second switch button 410 controls whether the operation display box 400 is started.

[0037] like Figure 2 As shown, in some embodiments, a frequency converter 314 is mounted on the mounting base plate 310. The frequency converter 314 is electrically connected to the drive device 200. The pedal controls the frequency converter 314, thereby controlling the speed of the drive device 200.

[0038] Specifically, when the speed of the drive unit 200 is changed, the pedal is pressed by foot. The pedal transmits a signal to the operation display box 400, which then sends a signal to the frequency converter 314. Finally, the frequency converter 314 can control the speed of the drive unit 200 to change.

[0039] like Figure 1 As shown, in some embodiments, a plurality of support legs 315 are installed on the bottom side of the mounting base plate 310 to support the mounting base plate 310.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A non-contact speedometer calibration device, characterized in that, include: A synchronous pulley set (100), a drive unit (200), and a housing (300); the synchronous pulley set (100) is mounted on a mounting base plate (310) inside the housing (300); the drive unit (200) is mounted on the mounting base plate (310) inside the housing (300); the synchronous pulley set (100) includes a drive gear (110), a driven gear (120), and a toothed belt (130); the drive gear (110) and the driven gear (120) are rotatably mounted on the mounting base plate (310); the drive gear (110) is connected to the output end of the drive unit (200) via a coupling (112); the toothed belt (130) is sleeved on the surfaces of the drive gear (110) and the driven gear (120), and the toothed belt (130) is provided with reflective strips; The drive gear (110) is equipped with baffles (111) on both sides to prevent the toothed belt (130) from detaching from the drive gear (110); the upper end face of the receiving box (300) is provided with a detection port (320), the detection port (320) and the toothed belt (130) are opposite to each other, and a cover plate (340) is hinged to the detection port (320), the cover plate (340) is made of transparent material.

2. The non-contact speedometer calibration device as described in claim 1, characterized in that: A mounting bracket (311) is mounted on the mounting base plate (310), and the drive device (200) is mounted on the mounting bracket (311).

3. The non-contact speedometer calibration device as described in claim 1, characterized in that: A wheel support (312) is mounted on the mounting base plate (310). A first vertical bearing assembly (3121) and a second vertical bearing assembly (3122) are mounted on the wheel support (312). A drive shaft (3123) is mounted on the first vertical bearing assembly (3121). The drive gear (110) is fixedly mounted on the drive shaft (3123). A driven shaft (3124) is mounted on the second vertical bearing assembly (3122). The driven gear (120) is fixedly mounted on the driven shaft (3124).

4. The non-contact speedometer calibration device as described in claim 3, characterized in that: One end of the passive wheel axle (3124) is provided with a mounting head (3125), and a fan (500) is threaded onto the mounting head (3125). An air inlet (330) and an air outlet are respectively opened on both sides of the housing (300).

5. The non-contact speedometer calibration device as described in claim 1, characterized in that: A socket box (313) is also installed on the mounting base plate (310), and the socket box (313) is provided with a first switch button (3131) and a first power connection port (3132).

6. The non-contact speedometer calibration device as described in claim 5, characterized in that: The socket box (313) is electrically connected to an operation display box (400), the operation display box (400) is electrically connected to a pedal, and the operation display box (400) is also provided with a second switch button (410) and a second power interface (420).

7. The non-contact speedometer calibration device as described in claim 6, characterized in that: A frequency converter (314) is installed on the mounting base plate (310). The frequency converter (314) is electrically connected to the drive device (200). The pedal controls the frequency converter (314), thereby controlling the speed of the drive device (200).

8. The non-contact speedometer calibration device as described in claim 1, characterized in that: The mounting base plate (310) has several support legs (315) installed on its bottom side to support the mounting base plate (310).

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