Tachometer calibration clamping mechanism

Abstract

The utility model discloses a tachometer calibration clamping mechanism, which relates to the tachometer calibration clamping field, and comprises a calibration installation shell, a calibration driving assembly arranged in the calibration installation shell, a calibration clamping assembly arranged on one side of the calibration driving assembly, a clamping driving assembly arranged on one side of the calibration clamping assembly, and a calibration clamping assembly arranged on the other side of the calibration clamping assembly. According to the automobile tachometer calibrating device, the prior art is improved, in actual use, clamping force can be kept in a self-adaptive mode through the calibration clamping assembly, and the problems that in the using process of an existing automobile tachometer calibrating device, a tachometer is fixed at a time, automatic re-clamping cannot be achieved after clamping is loosened, and clamping force cannot be adjusted are solved. The problem that the tachometer is easy to shake in the calibration process due to the fact that the tachometer is damaged, the accuracy of the measurement result is affected, and the practicability of the device is reduced is solved.

Description

Technical Field

[0001] This utility model relates to the field of tachometer calibration clamping, and more specifically, to a tachometer calibration clamping mechanism. Background Technology

[0002] A tachometer calibration apparatus is a device used to test and calibrate tachometers (also known as speedometers). A tachometer is an instrument used to measure the rotational speed of a rotating object, commonly used in the monitoring and control of rotating components in machinery, engines, and other similar equipment. A tachometer calibration apparatus typically consists of a standard speed source and a precision measurement system. The standard speed source provides different standard speed values ​​for comparison and calibration with the tachometer under test. The precision measurement system measures the output value of the tachometer under test and compares it with the standard speed to determine the tachometer's accuracy and stability.

[0003] Calibration methods are generally divided into static calibration and dynamic calibration. Static calibration uses a standard speed source and calibration instruments for testing. In this case, it may be necessary to fix the tachometer on a stable platform to avoid reading errors caused by vibration or other external factors. Dynamic calibration, on the other hand, involves placing the tachometer in actual operating conditions during the calibration process, such as mounting it on an engine or motor for testing.

[0004] However, existing automotive tachometer calibration devices only fix the tachometer in place once during use. They cannot automatically re-clamp the tachometer if it becomes loose, which makes the tachometer prone to shaking during calibration. This not only affects the accuracy of the measurement results but may also damage the tachometer itself, reducing the practicality of the device. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a tachometer calibration clamping mechanism to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A tachometer calibration clamping mechanism includes a calibration mounting housing, a calibration drive assembly inside the calibration mounting housing, a calibration clamping assembly on one side of the calibration drive assembly, and a clamping drive assembly on one side of the calibration clamping assembly.

[0008] To achieve the function of calibration clamping, the calibration clamping assembly includes a clamping mounting plate, which is symmetrically mounted on top of the calibration mounting housing. A trigger switch is installed inside the clamping mounting plate, and a clamping threaded rod is movably mounted inside the clamping mounting plate. A clamping arc-shaped frame is threadedly connected to the periphery of the clamping threaded rod. A pressure sensor is installed inside the clamping arc-shaped frame. A rubber contact layer is installed on one side of the clamping arc-shaped frame, and a limit sliding rod is symmetrically connected on the side of the clamping arc-shaped frame away from the rubber contact layer. The limit sliding rod slides with the clamping mounting plate through a limit sliding groove. A PLC controller is installed on one side of the calibration mounting housing.

[0009] Furthermore, the pressure sensor and the trigger switch are electrically connected to the PLC controller.

[0010] Furthermore, the calibration mounting housing has a slot for placing a tachometer.

[0011] Furthermore, in order to achieve the function of clamping drive, the clamping drive assembly includes two drive sprockets. One drive sprocket is connected to one end of the clamping threaded rod. The two drive sprockets are fitted with a drive chain around their periphery. The other drive sprocket has a drive rotating rod fixedly connected to its center. The drive rotating rod is movably connected to the clamping mounting plate. One end of the drive rotating rod is connected to a drive motor.

[0012] Furthermore, the drive motor is electrically connected to the PLC controller, and the PLC controller is electrically connected to a motor mounting bracket, which is connected to the calibration and mounting housing.

[0013] Furthermore, in order to achieve the function of calibration drive, the calibration drive assembly includes a calibration drive worm gear, which is movably installed inside the calibration mounting housing. One end of the calibration drive worm gear is connected to a calibration motor, the housing of which is connected to the calibration mounting housing. A transmission worm wheel meshes with one side of the calibration drive worm gear, and a calibration rotating rod is connected to the middle of the transmission worm wheel. The calibration rotating rod is movably connected to the calibration mounting housing, and one end of the calibration rotating rod is connected to a calibration placement head.

[0014] Furthermore, the motor is electrically connected to the PLC controller for calibration.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) This utility model has made improvements to the existing technology. In actual use, by calibrating the clamping component, the clamping force can be maintained adaptively, which solves the problem that the existing automotive tachometer calibration device fixes the tachometer only once during use and cannot automatically re-clamp after the clamping is loose. This causes the tachometer to shake easily during the calibration process, which not only affects the accuracy of the measurement results but may also damage the tachometer itself, reducing the practicality of the device.

[0017] (2) In actual use, the detection end of the car tachometer is inserted into the calibration placement head. After the calibration clamping assembly clamps it, the calibration motor drives the calibration drive worm to rotate. When the calibration drive worm rotates, it drives the transmission worm wheel to rotate. When the transmission worm wheel rotates, it drives the calibration rotating rod to rotate. When the calibration rotating rod rotates, it drives the calibration placement head to rotate. The calibration placement head then drives the detection end of the tachometer to rotate. The speed of the two tachometers is used to calibrate whether they are different. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0019] Figure 1 This is a schematic diagram of the main structure of a tachometer calibration clamping mechanism according to an embodiment of the present utility model;

[0020] Figure 2 This is a perspective view of a tachometer calibration clamping mechanism according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a tachometer calibration clamping mechanism according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of a tachometer calibration clamping mechanism according to an embodiment of the present utility model.

[0023] In the picture:

[0024] 1. Calibration mounting housing; 2. Calibration drive assembly; 201. Calibration drive worm gear; 202. Calibration motor; 203. Transmission worm wheel; 204. Calibration rotating rod; 205. Calibration placement head; 3. Calibration clamping assembly; 301. Clamping mounting plate; 302. Clamping threaded rod; 303. Clamping arc frame; 304. Pressure sensor; 305. Rubber contact layer; 306. Limiting sliding rod; 307. Limiting sliding groove; 308. PLC controller; 309. Trigger switch; 4. Clamping drive assembly; 401. Transmission sprocket; 402. Transmission chain; 403. Drive rotating rod; 404. Drive motor; 5. Tachometer placement slot; 6. Motor mounting bracket. Detailed Implementation

[0025] 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.

[0026] According to an embodiment of the present invention, a tachometer calibration clamping mechanism is provided, including a calibration mounting housing 1, a calibration drive component 2 is provided inside the calibration mounting housing 1, a calibration clamping component 3 is provided on one side of the calibration drive component 2, and a clamping drive component 4 is provided on one side of the calibration clamping component 3.

[0027] like Figure 1-4 As shown, according to an embodiment of the present invention, the tachometer calibration clamping mechanism includes a clamping mounting plate 301, which is symmetrically mounted on the top of the calibration mounting housing 1. A trigger switch 309 is installed inside the clamping mounting plate 301, and a clamping threaded rod 302 is movably mounted inside the clamping mounting plate 301. A clamping arc frame 303 is threadedly connected to the periphery of the clamping threaded rod 302. A pressure sensor 304 is installed inside the clamping arc frame 303. A rubber contact layer 305 is installed on one side of the clamping arc frame 303, and a limiting sliding rod 306 is symmetrically connected to the side of the clamping arc frame 303 away from the rubber contact layer 305. The limiting sliding rod 306 slides with the clamping mounting plate 301 through a limiting sliding groove 307. A PLC controller 308 is installed on one side of the calibration mounting housing 1. The pressure sensor 304 and the trigger switch 309 are electrically connected to the PLC controller 308, respectively. A tachometer placement slot 5 is provided inside the calibration mounting housing 1.

[0028] Through the above technical solution, the clamping drive assembly 4 drives the clamping threaded rod 302 to rotate within the clamping mounting plate 301. The rotation of the clamping threaded rod 302 causes the clamping arc frame 303 to move. The limiting sliding rod 306 and the limiting sliding groove 307 allow all the clamping arc frames 303 to move horizontally. Then, the clamping arc frame 303, along with the rubber contact layer 305, fixes the tachometer. After the pressure sensor 304 detects the clamping force, it sends a command to the PLC controller 308 to stop the clamping drive assembly 4 and start the calibration drive assembly 2, thereby achieving self-clamping after clamping. The calibration process involves vibration. When the pressure sensor 304 detects low clamping force, it controls the clamping drive assembly 4 to continue operating via the PLC controller 308. Once the required clamping force is reached, the clamping drive assembly 4 stops, greatly improving the stability during clamping. After calibration, the clamping arc frame 303 stops clamping the tachometer. At this time, the clamping arc frame 303 moves to contact the trigger switch 309, which in turn causes the clamping drive assembly 4 to stop automatically via the PLC controller 308. The tachometer placement slot 5 facilitates the placement of the tachometer.

[0029] like Figure 1-4 As shown, according to the embodiment of the present invention, the tachometer calibration clamping mechanism includes a clamping drive assembly 4 comprising two transmission sprockets 401. One transmission sprocket 401 is connected to one end of a clamping threaded rod 302. A transmission chain 402 is fitted around the two transmission sprockets 401. A drive rotating rod 403 is fixedly connected to the middle of the other transmission sprocket 401. The drive rotating rod 403 is movably connected to a clamping mounting plate 301. A drive motor 404 is connected to one end of the drive rotating rod 403. The drive motor 404 is electrically connected to a PLC controller 308. A motor mounting bracket 6 is electrically connected to the periphery of the PLC controller 308. The motor mounting bracket 6 is connected to the calibration mounting housing 1.

[0030] Through the above technical solution, the drive motor 404 drives the drive rotating rod 403 to rotate in the clamping mounting plate 301. When the drive rotating rod 403 rotates, it drives the transmission sprocket 401 and the transmission chain 402 to rotate. When the transmission sprocket 401 and the transmission chain 402 rotate, they drive the clamping threaded rod 302 to rotate. By setting the motor fixing bracket 6, the PLC controller 308 can be easily fixed.

[0031] like Figure 1-4As shown, according to an embodiment of the present invention, the tachometer calibration clamping mechanism includes a calibration drive assembly 2 comprising a calibration drive worm gear 201, which is movably mounted inside the calibration mounting housing 1. One end of the calibration drive worm gear 201 is connected to a calibration motor 202, the housing of the calibration motor 202 is connected to the calibration mounting housing 1, a transmission worm wheel 203 is meshed on one side of the calibration drive worm gear 201, a calibration rotating rod 204 is connected to the middle of the transmission worm wheel 203, the calibration rotating rod 204 is movably connected to the calibration mounting housing 1, one end of the calibration rotating rod 204 is connected to a calibration placement head 205, and the calibration motor 202 is electrically connected to a PLC controller 308.

[0032] Using the above technical solution, the detection end of the car tachometer is inserted into the calibration placement head 205. After being clamped by the calibration clamping assembly 3, the calibration motor 202 drives the calibration drive worm 201 to rotate. When the calibration drive worm 201 rotates, it drives the transmission worm wheel 203 to rotate. When the transmission worm wheel 203 rotates, it drives the calibration rotating rod 204 to rotate. When the calibration rotating rod 204 rotates, it drives the calibration placement head 205 to rotate. The calibration placement head 205 then drives the detection end of the tachometer to rotate. The difference in rotation speed between the two tachometers is used to calibrate whether they are different.

[0033] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0034] In summary, using the above-mentioned technical solution of this utility model, the clamping drive assembly 4 drives the clamping threaded rod 302 to rotate in the clamping mounting plate 301. When the clamping threaded rod 302 rotates, it drives the clamping arc frame 303 to move. The limiting sliding rod 306 and the limiting sliding groove 307 make all the clamping arc frames 303 move horizontally. Then, the clamping arc frame 303 drives the rubber contact layer 305 to fix the tachometer. After the pressure sensor 304 detects the clamping force, the pressure sensor 304 causes the clamping drive assembly 4 to stop and the calibration drive assembly 2 to start through the PLC controller 308, thereby achieving... The clamping mechanism automatically calibrates after clamping. During calibration, vibration occurs, and when the pressure sensor 304 detects low clamping force, it controls the clamping drive assembly 4 to continue operating via the PLC controller 308. Once the required clamping force is reached, the clamping drive assembly 4 stops, greatly improving the stability during clamping. After calibration, the clamping arc frame 303 stops clamping the tachometer. At this time, the clamping arc frame 303 moves to contact the trigger switch 309, which in turn causes the clamping drive assembly 4 to stop automatically via the PLC controller 308. The tachometer placement slot 5 facilitates the placement of the tachometer.

[0035] The drive motor 404 drives the drive rotating rod 403 to rotate in the clamping mounting plate 301. When the drive rotating rod 403 rotates, it drives the transmission sprocket 401 and the transmission chain 402 to rotate. When the transmission sprocket 401 and the transmission chain 402 rotate, they drive the clamping threaded rod 302 to rotate. By setting the motor fixing bracket 6, the PLC controller 308 can be easily fixed.

[0036] Insert the tachometer's detection end into the calibration placement head 205. After the calibration clamping assembly 3 clamps it, the calibration motor 202 drives the calibration drive worm 201 to rotate. When the calibration drive worm 201 rotates, it drives the transmission worm wheel 203 to rotate. When the transmission worm wheel 203 rotates, it drives the calibration rotating rod 204 to rotate. When the calibration rotating rod 204 rotates, it drives the calibration placement head 205 to rotate. The calibration placement head 205 then drives the tachometer's detection end to rotate. By measuring the rotation speeds of the two tachometers, the discrepancy can be calibrated.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tachometer calibration clamping mechanism, characterized in that, The system includes a calibration mounting housing (1), a calibration drive assembly (2) is provided inside the calibration mounting housing (1), a calibration clamping assembly (3) is provided on one side of the calibration drive assembly (2), and a clamping drive assembly (4) is provided on one side of the calibration clamping assembly (3). The calibration clamping assembly (3) includes a clamping mounting plate (301), which is symmetrically mounted above the calibration mounting housing (1). A trigger switch (309) is installed inside the clamping mounting plate (301). A clamping threaded rod (302) is movably mounted inside the clamping mounting plate (301). A clamping arc frame (303) is threadedly connected to the periphery of the clamping threaded rod (302). A pressure sensor (304) is installed inside the clamping arc frame (303). A rubber contact layer (305) is installed on one side of the clamping arc frame (303). A limit sliding rod (306) is symmetrically connected to the side of the clamping arc frame (303) away from the rubber contact layer (305). The limit sliding rod (306) slides with the clamping mounting plate (301) through a limit sliding groove (307). A PLC controller (308) is installed on one side of the calibration mounting housing (1).

2. The tachometer calibration clamping mechanism according to claim 1, characterized in that, The pressure sensor (304) and the trigger switch (309) are electrically connected to the PLC controller (308), respectively.

3. The tachometer calibration clamping mechanism according to claim 2, characterized in that, The calibration mounting housing (1) has a tachometer placement slot (5) inside.

4. The tachometer calibration clamping mechanism according to claim 3, characterized in that, The clamping drive assembly (4) includes two drive sprockets (401). One of the drive sprockets (401) is connected to one end of the clamping threaded rod (302). The two drive sprockets (401) are fitted with a drive chain (402) around their periphery. The other drive sprocket (401) is fixedly connected to a drive rotating rod (403) in the middle. The drive rotating rod (403) is movably connected to the clamping mounting plate (301). One end of the drive rotating rod (403) is connected to a drive motor (404).

5. A tachometer calibration clamping mechanism according to claim 4, characterized in that, The drive motor (404) is electrically connected to the PLC controller (308), and the PLC controller (308) is electrically connected to a motor mounting bracket (6), which is connected to the calibration mounting housing (1).

6. The tachometer calibration clamping mechanism according to claim 5, characterized in that, The calibration drive assembly (2) includes a calibration drive worm gear (201), which is movably installed inside the calibration mounting housing (1). One end of the calibration drive worm gear (201) is connected to a calibration motor (202), the housing of the calibration motor (202) is connected to the calibration mounting housing (1), a transmission worm gear (203) is engaged on one side of the calibration drive worm gear (201), a calibration rotating rod (204) is connected to the middle of the transmission worm gear (203), the calibration rotating rod (204) is movably connected to the calibration mounting housing (1), and one end of the calibration rotating rod (204) is connected to a calibration placement head (205).

7. A tachometer calibration clamping mechanism according to claim 6, characterized in that, The calibration motor (202) is electrically connected to the PLC controller (308).

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