CN220455347U - Device for calibrating diesel engine rotating speed measuring instrument - Google Patents
Device for calibrating diesel engine rotating speed measuring instrument Download PDFInfo
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- CN220455347U CN220455347U CN202320841914.5U CN202320841914U CN220455347U CN 220455347 U CN220455347 U CN 220455347U CN 202320841914 U CN202320841914 U CN 202320841914U CN 220455347 U CN220455347 U CN 220455347U
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- 239000000523 sample Substances 0.000 claims abstract description 3
- 230000010287 polarization Effects 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims 4
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The utility model belongs to the technical field of detection instruments, and particularly relates to a device for calibrating a diesel engine rotating speed measuring instrument, which comprises a shell, a miniature vibration motor and a miniature vibration motor control circuit board, wherein the miniature vibration motor is fixed in the shell, the miniature vibration motor is used for simulating a vibration signal generated by high-pressure oil injection of a diesel engine, the output end of the miniature vibration motor is connected with one end of a vibration rod, the other end of the vibration rod penetrates through the shell to be exposed out of the shell, and is used for contacting a speed measuring probe of the diesel engine rotating speed measuring instrument to calibrate the diesel engine rotating speed measuring instrument, a display screen and a measuring switch are arranged on the shell, and the display screen and the measuring switch are respectively connected with the miniature vibration motor control circuit board through wires. The utility model utilizes the miniature vibration motor to simulate the vibration of the diesel engine, calibrates the diesel engine rotating speed measuring instrument, and the measured data of the engine rotating speed is more accurate. The whole device is small in size, simpler in structure and convenient to carry.
Description
Technical Field
The utility model belongs to the technical field of detection instruments, and particularly relates to a device for calibrating a diesel engine rotating speed measuring instrument.
Background
In the maintenance process of the engine, the rotating speed of the engine is usually measured to see whether the rotating speed data of the engine on the automobile instrument panel is accurate, at present, an engine rotating speed measuring instrument is usually adopted for measuring the rotating speed of the engine, the engine rotating speed measuring instrument is a special measuring and detecting instrument for measuring the rotating speed of the engine by adopting a contact method and is divided into a gasoline engine rotating speed measuring instrument and a diesel engine rotating speed measuring instrument, wherein the measuring mode of the diesel engine rotating speed measuring instrument is an indirect measuring mode, namely, the vibration frequency of an engine shell is measured by the diesel engine rotating speed measuring instrument to indirectly measure the rotating speed of the automobile engine. Because the diesel engine speed measuring instrument is frequently used, along with the increase of the using times, the data measured by the diesel engine speed measuring instrument is easy to deviate, so that the diesel engine speed measuring instrument needs to be calibrated regularly to ensure the accuracy of the measured data of the diesel engine speed measuring instrument.
At present, the method for calibrating the diesel engine rotating speed measuring instrument in the market is divided into two types, one type is to calibrate by measuring the rotating speed of an ideal diesel engine, the method needs to purchase the diesel engine, the investment is large, the diesel engine has a huge structure, and the diesel engine is inconvenient to carry for field detection; the calibration device used in the method generally comprises a vibrating table simulating the vibration of the engine, and the vibrating table has large standard volume and is inconvenient to carry, and is easily affected by the interference of an installation and fixation mode, vibration noise and the like in the detection process, so that the unreliability of a measurement result is increased.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the device for calibrating the diesel engine rotating speed measuring instrument, which has the advantages of simple structure, portability and accurate and reliable measurement.
In order to solve the problems, the utility model adopts the following technical scheme:
the utility model provides a device for diesel engine rotational speed measuring apparatu calibration, includes the casing and is fixed in miniature vibrating motor, miniature vibrating motor control circuit board in the casing, and wherein miniature vibrating motor is used for simulating the produced vibration signal of diesel engine high pressure oil spout, and vibrating rod one end is connected to miniature vibrating motor's output, and the other end of vibrating rod passes the casing and exposes outside the casing for contact diesel engine rotational speed measuring apparatu in order to calibrate diesel engine rotational speed measuring apparatu, be equipped with display screen and measuring switch on the casing, display screen and measuring switch are connected with miniature vibrating motor control circuit board through the wire respectively.
Further, the casing comprises flip and lower box body that mutually matches, flip one side is connected through the hinge with lower box body one side, flip is gone up along the hinge upset and is closed with lower box body lid, lower box body sets up the top surface that flip is relative with last, sets up the hole of installation display screen, measuring switch and vibrating arm on the top surface.
Preferably, the micro vibration motor control circuit board comprises a CPU circuit, a display driving circuit, a key input circuit and a motor driving circuit, wherein the input of the CPU circuit is connected with the key input circuit, and the output of the CPU circuit is connected with the display driving circuit and the motor driving circuit.
Furthermore, a rechargeable battery is further arranged in the lower box body, the rechargeable battery is connected with the miniature vibration motor control circuit board through a wire, a plug hole for installing a charging plug is formed in the upper panel, and the charging plug is installed in the plug hole.
Further, the miniature vibration motor control circuit board also comprises a charging circuit, the input end of the charging circuit is connected with a charging plug through a wire, and the output end of the charging circuit is connected with a rechargeable battery and provides power for the miniature vibration motor control circuit board.
Preferably, the miniature vibration motor is fixed in the shell through a mounting plate, and the mounting plate is parallel to the bottom surface of the shell and is fixedly mounted.
Preferably, the miniature vibration motor is a linear vibration motor, and the axis of the output shaft of the miniature vibration motor is coincident with the axis of the vibration rod.
Preferably, the miniature vibration motor is a common polarization rotary vibration motor, and the axis of an output shaft of the miniature vibration motor is perpendicular to the axis of the vibration rod.
Further, the top of one end of the vibrating rod exposed out of the shell is a vibrating contact, and the top of the vibrating contact is a curved surface.
Further, the bottom of the lower box body is provided with a rubber seat, and the rubber seat is fixed on the bottom surface of the outer side of the lower box body through screws.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
the utility model utilizes the miniature vibration motor to simulate the vibration of the diesel engine and outputs the vibration through the vibration rod arranged on the miniature vibration motor so as to calibrate the diesel engine rotating speed measuring instrument. After the diesel engine rotating speed measuring instrument is calibrated by the utility model, the measured data of the engine rotating speed is more accurate. The utility model adopts the miniature vibration motor as the vibration source, so that the whole device has smaller volume, simpler structure, and convenient carrying and detection due to the configuration of the rechargeable battery.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a calibration device according to the present utility model;
FIG. 2 is a schematic view of a calibration device of the present utility model in a cut-away configuration;
fig. 3 is a schematic block diagram of a miniature vibration motor control circuit board according to the present utility model.
Wherein: 1. the display screen, 2, the casing, 21, flip, 22, lower box body, 3, rechargeable battery, 4, miniature vibrating motor control circuit board, 5, mounting panel, 6, miniature vibrating motor, 61, vibrating rod, 62, vibrating contact, 7, measuring switch, 8, charging plug, 9, button.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It is apparent that the described embodiments of the utility model are only some, but not all embodiments of the utility model. Accordingly, the following detailed description of the embodiments is not intended to limit the scope of the utility model, but is to be construed as providing those skilled in the art with the benefit of the teachings presented herein; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on those shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model; unless explicitly defined otherwise.
The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two elements; the specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in connection with practical applications according to specific embodiments.
As shown in fig. 1 and 2, the utility model is a device for calibrating a diesel engine rotation speed measuring instrument, which comprises a shell 2, a micro vibration motor 6 and a micro vibration motor control circuit board 4, wherein the micro vibration motor 6 is fixed in the shell 2, the micro vibration motor 6 is used for simulating a vibration signal generated by high-pressure oil injection of a diesel engine, the output end of the micro vibration motor 6 is connected with one end of a vibration rod 61, the other end of the vibration rod 61 penetrates through the shell 2 to be exposed out of the shell 2, and is used for contacting a speed measuring probe of the diesel engine rotation speed measuring instrument to calibrate the diesel engine rotation speed measuring instrument, the shell 2 is provided with a display screen 1 and a measuring switch 7, and the display screen 1 and the measuring switch 7 are respectively connected with the micro vibration motor control circuit board 4 through wires.
As a preferred embodiment of the present utility model, the housing 2 is composed of an upper flip cover 21 and a lower box body 22 that are matched with each other, one side of the upper flip cover 21 is connected with one side of the lower box body 22 through a hinge shaft, the upper flip cover 21 is turned over along the hinge shaft to cover the lower box body 22, an upper panel is disposed on a top surface of the lower box body 22 opposite to the upper flip cover 21, and a hole for installing the display screen 1, the measuring switch 7 and the vibration rod 61 is formed on the upper panel.
Furthermore, a rechargeable battery 3 is further arranged in the lower box body 22, the rechargeable battery 3 is connected with the miniature vibration motor control circuit board 4 through a wire, a plug hole for installing the charging plug 8 is formed in the upper panel, and the charging plug 8 is installed in the plug hole.
As shown in fig. 3, the micro vibration motor control circuit board 4 of the present utility model includes a CPU circuit, a display driving circuit, a key input circuit, and a motor driving circuit, wherein an input of the CPU circuit is connected to the key input circuit, and an output of the CPU circuit is connected to the display driving circuit and the motor driving circuit.
Furthermore, the micro vibration motor control circuit board 4 further comprises a charging circuit, the input end of the charging circuit is connected with the charging plug 8 through a wire, and the output end of the charging circuit is connected with the rechargeable battery 3 and provides power for the micro vibration motor control circuit board 4.
In the present utility model, in order to fix the micro vibration motor 6 more firmly, and prevent the vibration from loosening, etc. from affecting the calibration result, the micro vibration motor 6 is fixed in the housing 2 by the mounting plate 5, and the mounting plate 5 is parallel to the bottom surface of the housing 2 and is fixed.
For the present utility model, the micro vibration motor 6 may be a linear vibration motor or a normal deflection rotation type vibration motor, and when the linear vibration motor is selected, the axis of the output shaft of the micro vibration motor 6 coincides with the axis of the vibration rod 61, that is, the micro vibration motor 6 is vertically installed on the installation, the output shaft is upward, and the output shaft is connected with the vibration rod 61 through a coupling, a socket connection, a threaded connection, or the like. When the common polarization rotary vibration motor is selected, the axis of the output shaft of the miniature vibration motor 6 is vertical to the axis of the vibration rod 61, namely, the motor is transversely arranged on the installation, the output shaft is horizontal, the output shaft can be directly inserted into a hole at the lower end of the vibration rod 61, the output shaft drives the vibration rod 61 to perform shimmy, and of course, the output shaft of the miniature vibration motor can also be connected with the vibration rod 61 through a swinging mechanism.
In order to facilitate measurement and improve measurement accuracy, a vibrating contact 62 is arranged at the top of one end of the vibrating rod 61 exposed out of the shell 2, and the top of the vibrating contact 62 is a curved surface.
In order to prevent the vibration of the micro vibration motor 6 from being generated between the ground and the like or the support during measurement and affecting the measurement result, a rubber seat is arranged at the bottom of the lower box 22 and is fixed on the bottom surface of the outer side of the lower box 22 by screws.
Description of working principle:
the utility model detects the vibration frequency of the vibration rod by placing the engine speed measuring instrument on the vibration rod, then compares the speed data measured on the engine speed measuring instrument with the simulated speed of the miniature vibration motor displayed on the display screen of the calibrating device, and finally calibrates the engine speed measuring instrument.
Claims (10)
1. A device for calibrating a diesel engine speed measuring instrument, characterized by: including casing (2) and be fixed in miniature vibrating motor (6), miniature vibrating motor control circuit board (4) in casing (2), wherein miniature vibrating motor (6) are used for simulating the produced vibration signal of diesel engine high pressure oil spout, and vibrating rod (61) one end is connected to the output of miniature vibrating motor (6), and outside casing (2) are passed casing (2) to the other end of vibrating rod (61), are used for contacting the speed measuring probe of diesel engine rotational speed measuring instrument in order to calibrate diesel engine rotational speed measuring instrument, be equipped with display screen (1) and measuring switch (7) on casing (2), display screen (1) and measuring switch (7) are connected with miniature vibrating motor control circuit board (4) through the wire respectively.
2. An apparatus for calibrating a diesel engine tachometer according to claim 1, characterized in that: the shell (2) comprises an upper turnover cover (21) and a lower box body (22) which are matched with each other, one side of the upper turnover cover (21) is connected with one side of the lower box body (22) through a hinge shaft, the upper turnover cover (21) is turned over along the hinge shaft to be covered with the lower box body (22), an upper panel is arranged on the top surface of the lower box body (22) opposite to the upper turnover cover (21), and holes for installing the display screen (1), the measuring switch (7) and the vibrating rod (61) are formed in the upper panel.
3. An apparatus for calibrating a diesel engine tachometer according to claim 2, characterized in that: the miniature vibration motor control circuit board (4) comprises a CPU circuit, a display driving circuit, a key input circuit and a motor driving circuit, wherein the input of the CPU circuit is connected with the key input circuit, and the output of the CPU circuit is connected with the display driving circuit and the motor driving circuit.
4. A device for calibrating a diesel engine tachometer according to claim 2 or 3, characterized in that: the charging device is characterized in that a rechargeable battery (3) is further arranged in the lower box body (22), the rechargeable battery (3) is connected with the miniature vibration motor control circuit board (4) through a wire, a plug hole for installing the charging plug (8) is formed in the upper panel, and the charging plug (8) is installed in the plug hole.
5. An apparatus for calibrating a diesel engine tachometer according to claim 4, wherein: the miniature vibration motor control circuit board (4) further comprises a charging circuit, the input end of the charging circuit is connected with a charging plug (8) through a wire, and the output end of the charging circuit is connected with a rechargeable battery (3) and provides power for the miniature vibration motor control circuit board (4).
6. A device for calibrating a diesel engine tachometer according to any of claims 1, 2, 3, 5, characterized in that: the miniature vibration motor (6) is fixedly arranged in the shell (2) through the mounting plate (5), and the mounting plate (5) is parallel to the bottom surface of the shell (2) and fixedly arranged.
7. An apparatus for calibrating a diesel engine tachometer according to claim 6, wherein: the miniature vibration motor (6) is a linear vibration motor, and the axis of the output shaft of the miniature vibration motor (6) is overlapped with the axis of the vibration rod (61).
8. An apparatus for calibrating a diesel engine tachometer according to claim 6, wherein: the miniature vibration motor (6) is a common polarization rotary vibration motor, and the axis of an output shaft of the miniature vibration motor (6) is perpendicular to the axis of the vibration rod (61).
9. An apparatus for calibrating a diesel engine tachometer according to claim 1, characterized in that: the top of one end of the vibrating rod (61) exposed out of the shell (2) is provided with a vibrating contact (62), and the top of the vibrating contact (62) is a curved surface.
10. An apparatus for calibrating a diesel engine tachometer according to claim 2, characterized in that: the bottom of the lower box body (22) is provided with a rubber seat, and the rubber seat is fixed on the bottom surface of the outer side of the lower box body (22) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320841914.5U CN220455347U (en) | 2023-04-14 | 2023-04-14 | Device for calibrating diesel engine rotating speed measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320841914.5U CN220455347U (en) | 2023-04-14 | 2023-04-14 | Device for calibrating diesel engine rotating speed measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220455347U true CN220455347U (en) | 2024-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320841914.5U Active CN220455347U (en) | 2023-04-14 | 2023-04-14 | Device for calibrating diesel engine rotating speed measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220455347U (en) |
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2023
- 2023-04-14 CN CN202320841914.5U patent/CN220455347U/en active Active
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