CN209803178U - calibration device for motor vehicle engine rotating speed measuring instrument - Google Patents
calibration device for motor vehicle engine rotating speed measuring instrument Download PDFInfo
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- CN209803178U CN209803178U CN201920867413.8U CN201920867413U CN209803178U CN 209803178 U CN209803178 U CN 209803178U CN 201920867413 U CN201920867413 U CN 201920867413U CN 209803178 U CN209803178 U CN 209803178U
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- main shaft
- vibration
- measuring instrument
- speed measuring
- belt pulley
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Abstract
A motor vehicle engine speed measuring instrument calibration device drives a three-phase alternating-current generator to generate power when a main shaft rotates and charges a storage battery, so that a storage battery charging and discharging voltage pulse type speed measuring instrument of an automobile can detect the voltage pulse type speed measuring instrument so as to be convenient for calibration of the motor vehicle engine speed measuring instrument, drives a vibration generating device to generate periodic vibration when the main shaft rotates, and generates a vibration signal and an audio signal, so that a vibration sensor of a vibration induction type speed measuring instrument is adsorbed on a vibration plate to read the reading of the speed measuring instrument. When the device is electrified, the circuit is closed, the storage battery supplies power to the ignition system, the high-voltage coil breaks down the spark plug to generate electric sparks after changing low voltage into high voltage, and the clamp of the high-voltage ignition pulse induction type rotating speed measuring instrument is clamped on the high-voltage coil to read the rotating speed. The signal processing capability of the rotating speed measuring instrument can be evaluated by simulating the actual working state of the engine.
Description
Technical Field
The utility model relates to a calibration instrument technical field, concretely relates to motor vehicle engine speed measuring instrument calibrating device.
Background
With the rapid development of the automobile industry, the number of the automobile environment-friendly detection lines is greatly increased, and according to the requirements of GB18285-2018 and GB3847-2018, each detection line needs to be provided with an engine speed measuring instrument which is used for detecting automobile exhaust in a double-idling state. With the increasing market demand and more types of engine rotating speed measuring instruments, the high-voltage ignition pulse induction type, the charging and discharging voltage pulse type of automobile storage batteries and the engine vibration induction type engine rotating speed measuring instruments of the ignition type engine are in a plurality of types at present.
at present, a multifunctional engine rotating speed measuring instrument calibration device does not exist in China, and the existing calibration device is only a rotating speed measuring instrument aiming at a certain measuring principle. Some conventional calibration devices provide a standard electrical signal and cannot completely simulate the actual operating environment of the engine speed measurement instrument. The signal processing capability of the engine speed measuring instrument cannot be truly evaluated. In addition, vibration signals and audio signals of the engine during working are collected by vibration induction type rotating speed measuring instruments of partial models in the market, and the traditional calibrating device cannot meet the detection requirements of the rotating speed measuring instruments. Therefore, it is necessary to design a calibration device for a multifunctional engine speed measuring instrument to realize the detection of various engine speed measuring instruments.
Disclosure of Invention
the utility model discloses an overcome not enough of above technique, provide one kind can the automatic check point ignition of combustion engine high pressure pulse induction type, car storage battery charge-discharge voltage pulsation formula, the calibrating device of 3 major categories of engine speed measuring apparatuss of engine vibration induction type.
the utility model overcomes the technical scheme that its technical problem adopted is:
A motor vehicle engine speed gauge calibration apparatus comprising:
The upper end of the workbench is provided with a main shaft fixing bracket;
The main shaft is horizontally and rotatably arranged in the main shaft fixing support through a bearing, and a belt pulley I is arranged on the main shaft;
the servo motor is arranged on the workbench, a belt pulley II is arranged on an output shaft of the servo motor, and the belt pulley I and the belt pulley II are in transmission connection through a synchronous belt II;
the vibration generating device is arranged on the main shaft, and the main shaft generates vibration through the vibration generating device when rotating;
the pulse signal generating device is arranged on the main shaft, and the pulse signal generating device sends out pulse signals at equal time intervals when the main shaft rotates;
The servo motor is connected with the controller through a servo driver;
The three-phase alternating-current generator is arranged on the workbench, a belt pulley IV is arranged on an output shaft of the three-phase alternating-current generator, a belt pulley III is arranged on the main shaft, and the belt pulley III and the belt pulley IV are in transmission connection through a synchronous belt I;
A storage battery connected in parallel with the three-phase alternator;
The high-voltage coil is connected to the storage battery through a relay, the control end of the high-voltage coil is connected to the ignition signal generator, the ignition signal generator is connected to the pulse signal generating device, and the resistor is connected with the storage battery in parallel.
furthermore, the vibration generating device comprises a vibration plate fixing support arranged on the workbench and a cam arranged on the main shaft, wherein the tail end of the vibration plate is fixed on the vibration plate fixing support, the head end of the vibration plate is in contact with the cam, the lower end of the tension spring is connected to the workbench, and the upper end of the tension spring is connected to the vibration plate.
furthermore, the pulse signal generating device comprises an induction wheel arranged on the main shaft, a plurality of protrusions are uniformly arranged on the induction wheel at intervals, a Hall sensor is arranged on the workbench, and when the protrusions rotate to the position under the Hall sensor, the protrusions enable the Hall sensor to send out a trigger signal.
preferably, the controller is a single chip microcomputer.
in order to reduce the friction force, a vibration filter wheel is arranged at the head end of the vibration plate, and the wheel surface of the vibration filter wheel is in rolling friction contact with the cam.
Preferably, the three-phase alternating-current generator further comprises a generator excitation voltage regulator connected between the storage battery and the three-phase alternating-current generator.
the utility model has the advantages that: the main shaft drives the three-phase alternating-current generator to generate power when rotating, and charges the storage battery, so that the automobile storage battery charging and discharging voltage pulsation type rotating speed measuring instrument can detect the voltage so as to be convenient for calibration of the rotating shaft, the main shaft drives the vibration generating device to generate periodic vibration when rotating, and the vibration generates a vibration signal and an audio signal, so that the vibration sensor of the vibration induction type rotating speed measuring instrument is adsorbed on the vibration plate to read the reading of the rotating speed measuring instrument. When the device is electrified, the circuit is closed, the storage battery supplies power to the ignition system, the high-voltage coil breaks down the spark plug to generate electric sparks after changing low voltage into high voltage, and the clamp of the high-voltage ignition pulse induction type rotating speed measuring instrument is clamped on the high-voltage coil to read the rotating speed. The signal processing capability of the rotating speed measuring instrument can be evaluated by simulating the actual working state of the engine.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
Fig. 2 is a schematic front view of the main shaft of the present invention;
FIG. 3 is a schematic cross-sectional view taken along the lines B-B and C-C in FIG. 2;
fig. 4 is a schematic structural diagram of the driving system of the present invention;
In the figure, 1, a workbench 2, a three-phase alternating-current generator 3, a servo motor 4, a Hall sensor 5, an induction wheel 6, a synchronous belt I7, a synchronous belt II 8, a main shaft fixing support 9, a vibration filter wheel 10, a vibration plate 11, a cam 12, a vibration plate fixing support 13, a main shaft 14, an extension spring 15, a protrusion 16, a servo driver 17, a storage battery 18, a high-voltage coil 19, a generator excitation voltage regulator 20, an ignition signal generator 21, a resistor 22, a relay 23, a singlechip 24, a belt pulley I25, a belt pulley II 26 and a belt pulley III.
Detailed Description
The present invention will be further described with reference to fig. 1 to 4.
A motor vehicle engine speed gauge calibration apparatus comprising: a main shaft fixing bracket 8 is arranged at the upper end of the workbench 1; the main shaft 13 is horizontally and rotatably arranged in the main shaft fixing support 8 through a bearing, and a belt pulley I24 is arranged on the main shaft 13; the servo motor 3 is arranged on the workbench 1, a belt pulley II 25 is arranged on an output shaft of the servo motor 3, and the belt pulley I24 is in transmission connection with the belt pulley II 25 through a synchronous belt II 7; a vibration generating device installed on the main shaft 13, wherein the main shaft 13 generates vibration by the vibration generating device when rotating; the pulse signal generating device is arranged on the main shaft 13, and when the main shaft 13 rotates, the pulse signal generating device sends out pulse signals at equal time intervals; the servo motor 3 is connected with the controller through a servo driver 16; the three-phase alternating-current generator 2 is arranged on the workbench 1, a belt pulley IV is arranged on an output shaft of the three-phase alternating-current generator 2, a belt pulley III 26 is arranged on the main shaft 13, and the belt pulley III 26 and the belt pulley IV are in transmission connection through a synchronous belt I6; a battery 17 connected in parallel with the three-phase alternator 2; and a high-voltage coil 18 connected to the battery 17 through a relay 22, wherein a control end of the high-voltage coil 18 is connected to an ignition signal generator 20, the ignition signal generator 20 is connected to a pulse signal generating device, and a resistor 21 is connected in parallel with the battery 17. The controller controls the servo driver 16 to drive the servo motor 3 to rotate, because the servo motor 3 and the main shaft 13 drive the main shaft 13 to rotate at a set rotating speed through the synchronous belt II 7, so as to simulate the rotation of an engine crankshaft, the main shaft 13 rotates to drive the three-phase alternating-current generator 2 to act through the synchronous belt I6, the storage battery 17 is charged after the three-phase alternating-current generator 2 generates electricity, therefore, the automobile storage battery charging and discharging voltage pulse type rotating speed measuring instrument can detect, so as to facilitate the calibration of the automobile storage battery charging and discharging voltage pulse type rotating speed measuring instrument, the main shaft 13 drives the vibration generating device to generate periodic vibration when rotating, the vibration generates a vibration signal and an audio signal, and therefore, a vibration sensor of the. When the main shaft 13 rotates, an ignition control signal is generated to the ignition signal generator 20 through the pulse signal generating device, when the device is powered off, the relay 22 works, the circuit is disconnected, the storage battery does not supply power to the ignition system any more, when the device is powered on, the circuit is closed, the storage battery 17 supplies power to the ignition system, the high-voltage coil 18 changes the low voltage into the high voltage and then breaks down a spark plug to generate electric sparks, and the clamp of the high-voltage ignition pulse induction type rotating speed measuring instrument is clamped on the high-voltage coil to read the rotating speed. The high-voltage ignition pulse generated by the ignition device and the output voltage of the storage battery are completely consistent with the actual working ignition action of the automobile engine. The calibration device realizes the calibration of the automobile storage battery charging and discharging voltage pulsation type rotating speed measuring instrument, the vibration induction type rotating speed measuring instrument and the high-voltage ignition pulse induction type rotating speed measuring instrument. The signal processing capability of the rotating speed measuring instrument can be evaluated by simulating the actual working state of the engine.
the vibration generating device may have a structure including a vibration plate fixing support 12 installed on the table 1 and a cam 11 installed on the spindle 13, wherein the vibration plate 10 is fixed at a rear end thereof to the vibration plate fixing support 12 and at a head end thereof contacting the cam 11, and a tension spring 14 is connected at a lower end thereof to the table 1 and at an upper end thereof to the vibration plate 10. When the main shaft 13 rotates, the cam 11 is driven to rotate, and the diaphragm 10 slides and frictionally contacts the cam 11, so that the diaphragm 10 vibrates when the cam 11 rotates, the extension spring 14 is stretched and deformed when the diaphragm 10 moves upward, and the diaphragm 10 is always in contact with the cam 11 by the spring force of the extension spring 14. The vibration plate 10 vibrates to simulate a vibration signal and an audio signal generated when the engine operates.
the pulse signal generating device can be of a structure comprising an induction wheel 5 arranged on a main shaft 13, a plurality of protrusions 15 are uniformly arranged on the induction wheel 5 at intervals, a Hall sensor 4 is arranged on the workbench 1, and when the protrusions 15 rotate to the position right below the Hall sensor 4, the protrusions 15 enable the Hall sensor 4 to send out a trigger signal. After the main shaft 13 rotates for a circle, each protrusion 15 on the induction wheel 5 enables the hall sensor 4 to send out a trigger signal, and the signal sent out by the trigger signal controls the ignition signal generator 20 to be switched on and off.
Further, the controller is a single chip microcomputer 23, the single chip microcomputer 23 can be a C8051F020 type single chip microcomputer, and it is common knowledge in the art to use the single chip microcomputer 23 to drive the servo motor 3 to rotate through the servo driver 16.
Preferably, the vibration filter wheel 9 is attached to the tip end of the vibration plate 10, and the wheel surface of the vibration filter wheel 9 is in rolling frictional contact with the cam 11. Since the tread of the vibration filter wheel 9 is in contact with the cam 11, the sliding frictional contact between the vibration plate 10 and the cam 11 is changed to rolling frictional contact, thereby preventing the wear of the vibration plate 10 and improving the service life thereof.
Further, a generator excitation voltage regulator 19 is included, which is connected between the battery 17 and the three-phase alternator 2. The generator excitation voltage regulator 19 can regulate the charging voltage of the battery 17.
Claims (6)
1. A motor vehicle engine speed gauge calibration device, comprising:
The upper end of the workbench (1) is provided with a main shaft fixing bracket (8);
the main shaft (13) is horizontally and rotatably arranged in the main shaft fixing support (8) through a bearing, and a belt pulley I (24) is arranged on the main shaft (13);
the servo motor (3) is arranged on the workbench (1), a belt pulley II (25) is arranged on an output shaft of the servo motor (3), and the belt pulley I (24) is in transmission connection with the belt pulley II (25) through a synchronous belt II (7);
The vibration generating device is arranged on the main shaft (13), and the main shaft (13) generates vibration through the vibration generating device when rotating;
The pulse signal generating device is arranged on the main shaft (13), and the pulse signal generating device sends out pulse signals at equal time intervals when the main shaft (13) rotates;
the servo motor (3) is connected with the controller through a servo driver (16);
The three-phase alternating-current generator (2) is arranged on the workbench (1), a belt pulley IV is arranged on an output shaft of the three-phase alternating-current generator (2), a belt pulley III (26) is arranged on the main shaft (13), and the belt pulley III (26) is in transmission connection with the belt pulley IV through a synchronous belt I (6);
a battery (17) connected in parallel with the three-phase AC generator (2);
the high-voltage coil (18) is connected to the storage battery (17) through a relay (22), the control end of the high-voltage coil (18) is connected to an ignition signal generator (20), the ignition signal generator (20) is connected to a pulse signal generating device, and a resistor (21) is connected with the storage battery (17) in parallel.
2. the motor vehicle engine speed gauge calibration device according to claim 1, wherein: the vibration generating device comprises a vibration plate fixing support (12) arranged on the workbench (1) and a cam (11) arranged on a main shaft (13), wherein the tail end of the vibration plate (10) is fixed on the vibration plate fixing support (12), the head end of the vibration plate is in contact with the cam (11), the lower end of an extension spring (14) is connected to the workbench (1), and the upper end of the extension spring is connected to the vibration plate (10).
3. The motor vehicle engine speed gauge calibration device according to claim 1, wherein: the pulse signal generating device comprises an induction wheel (5) installed on a main shaft (13), a plurality of protrusions (15) are evenly arranged on the induction wheel (5) at intervals, a Hall sensor (4) is arranged on a workbench (1), and when the protrusions (15) rotate to the position under the Hall sensor (4), the protrusions (15) enable the Hall sensor (4) to send out trigger signals.
4. The motor vehicle engine speed gauge calibration device according to claim 1, wherein: the controller is a single chip microcomputer (23).
5. The motor vehicle engine speed gauge calibration device according to claim 2, wherein: the head end of the vibration plate (10) is provided with a vibration filter wheel (9), and the wheel surface of the vibration filter wheel (9) is in rolling friction contact with the cam (11).
6. The motor vehicle engine speed gauge calibration device according to claim 1, wherein: the three-phase alternating-current generator further comprises a generator excitation voltage regulator (19) connected between the storage battery (17) and the three-phase alternating-current generator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920867413.8U CN209803178U (en) | 2019-06-11 | 2019-06-11 | calibration device for motor vehicle engine rotating speed measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920867413.8U CN209803178U (en) | 2019-06-11 | 2019-06-11 | calibration device for motor vehicle engine rotating speed measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209803178U true CN209803178U (en) | 2019-12-17 |
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ID=68833510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920867413.8U Withdrawn - After Issue CN209803178U (en) | 2019-06-11 | 2019-06-11 | calibration device for motor vehicle engine rotating speed measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209803178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161284A (en) * | 2019-06-11 | 2019-08-23 | 山东省计量科学研究院 | Motor car engine tachometer of measuring calibrating installation |
-
2019
- 2019-06-11 CN CN201920867413.8U patent/CN209803178U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161284A (en) * | 2019-06-11 | 2019-08-23 | 山东省计量科学研究院 | Motor car engine tachometer of measuring calibrating installation |
| CN110161284B (en) * | 2019-06-11 | 2023-10-13 | 山东省计量科学研究院 | Calibrating device for motor vehicle engine speed measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191217 Effective date of abandoning: 20231013 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20191217 Effective date of abandoning: 20231013 |