CN112924712B - Direct current motor with speed measuring device - Google Patents
Direct current motor with speed measuring device Download PDFInfo
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- CN112924712B CN112924712B CN202110082083.3A CN202110082083A CN112924712B CN 112924712 B CN112924712 B CN 112924712B CN 202110082083 A CN202110082083 A CN 202110082083A CN 112924712 B CN112924712 B CN 112924712B
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- 238000005259 measurement Methods 0.000 abstract 3
- 238000001514 detection method Methods 0.000 abstract 1
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- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/68—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light
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Abstract
The invention relates to the technical field of direct current motors, in particular to a direct current motor with a speed measuring device, which comprises a base and is characterized in that: the automatic detection device comprises a base, a machine shell, a front bearing, a clamping seat, a blocking piece, a lamp holder, a laser lamp, a photosensitive sensor, a band converter, a display panel, a straight rod and a chute, wherein the machine shell is fixedly connected to the base; the speed measurement of the direct current motor is carried out through the laser type speed measurement structure, compared with a traditional coding speed measurement device, the rotating speed of the motor can be measured and calculated more accurately, and normal use of the motor is not affected.
Description
Technical Field
The invention relates to the technical field of direct current motors, in particular to a direct current motor with a speed measuring device.
Background
A dc motor is one of the commonly used motors, which can convert mechanical energy and electrical energy, and is an important basis for industrial development. In a common direct current motor, a speed measuring encoder is often adopted to directly measure the rotating speed of the motor, the reliability of the speed measuring device is not very high and is easy to interfere, the existing speed measuring encoder needs to be directly connected with a motor rotating shaft when in use, the normal use of the motor is easy to influence, the speed measuring device in the common motor can only measure the rotating speed of the motor, but the function of providing timely protection for the motor and equipment is lacked, a user observes that a section of empty period exists between the rotating speed of the motor which is too high and is closed, and irreversible loss is easy to cause, and in view of the above, the direct current motor with the speed measuring device is provided.
Disclosure of Invention
The present invention provides a dc motor with a speed measuring device to solve the problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a direct current motor with speed sensor, includes the frame, its characterized in that: fixedly connected with casing on the frame, and fixed mounting has the rear bearing on the frame, rotate on the rear bearing and install the pivot, and fixed mounting has the end cover on the casing, fixed mounting has the front bearing on the end cover, fixed mounting has the cassette in the pivot, and fixed mounting has the separation blade on the cassette, fixed mounting has the lamp stand on the casing, and fixed mounting has the laser lamp on the lamp stand, fixed mounting has photosensitive sensor on the casing, and photosensitive sensor is connected with the band converter, and the band converter is connected with the display panel, fixedly connected with straight-bar in the pivot, and be provided with the spout on the straight-bar, fixed mounting has the spring in the spout, and fixedly connected with slider on the spring, threaded connection has adjusting screw on the straight-bar, and fixed mounting has the stopper on the straight-bar, fixed mounting has pressure sensor on the stopper, and fixed mounting has the slide bar on the slider, fixed mounting has the video disc on the slide bar, fixed mounting has the locating circle on the end cover, and fixed mounting has friction-increasing piece and temperature sensor on the locating circle, and temperature sensor is connected with power-off switch.
Preferably, the casing is installed at the front end of frame, and the end cover is installed at the front end of casing, rear bearing and front bearing are in same straight line, and the pivot is installed between the two, and the pivot runs through the end cover and sets up.
Preferably, the two clamping seats are symmetrically arranged on the rotating shaft, the blocking pieces are of a circular structure, the laser lamp and the photosensitive sensor are respectively arranged on two sides of the rotating shaft, and the display panel is arranged on the outer wall of the casing.
Preferably, the straight rod is annularly and symmetrically arranged on the rotating shaft by 2-4, the sliding groove is formed in the middle of the straight rod, the sliding block is connected in the sliding groove in a sliding mode, the spring is connected to the bottom of the sliding block, the sliding rod is arranged at the top of the sliding block, the sliding rod penetrates through the straight rod to be arranged, and the disc is arranged at the front end of the sliding rod.
Preferably, adjusting screw installs in the side of slider, and the stopper is located the opposite side of slider, stopper surface mounting has the bed course, and pressure sensor inlays and installs in the stopper.
Preferably, the position circle is installed in the inboard of end cover, and increases the piece and install on the inner wall of position circle, temperature sensor is connected with the bottom surface that increases the piece that rubs, and power off switch connects on power supply circuit.
Compared with the prior art, the invention has the beneficial effects that:
1. the speed of the direct current motor is measured by the laser type speed measuring structure, in the using process of the motor, laser generated by a laser lamp can irradiate on a photosensitive sensor under the normal condition and is converted into an electric signal, the light of the laser lamp is blocked intermittently by a blocking piece when a rotating shaft rotates, so that a blank signal is left on the photosensitive sensor, the optical signal and the blank signal form a signal waveband, and the signal waveband is transmitted and recorded on a waveband converter;
2. the invention is not only provided with a laser type speed measuring structure, but also provided with a self-reaction overspeed protection structure, when the rotating shaft of the motor rotates too fast, the disk can be driven by centrifugal force to carry out emergency speed reduction, and simultaneously the power-off switch is triggered to carry out emergency power-off on the motor, so that the damage caused by the overspeed of the rotating shaft is avoided, and the trigger threshold value of the overspeed protection structure is adjustable and can be adapted according to the bearing capacity of the motor.
Drawings
FIG. 1 is a side view of the structure of the present invention;
fig. 2 is an enlarged schematic view of the area a in fig. 1.
In the figure: the device comprises a base 1, a machine shell 2, a rear bearing 3, a rotating shaft 4, an end cover 5, a front bearing 6, a clamping seat 7, a blocking piece 8, a lamp holder 9, a laser lamp 10, a photosensitive sensor 11, a waveband converter 12, a display panel 13, a straight rod 14, a sliding groove 15, a spring 16, a sliding block 17, an adjusting screw 18, a limiting block 19, a pressure sensor 20, a sliding rod 21, a disc 22, a positioning ring 23, a friction increasing piece 24, a temperature sensor 25 and a power-off switch 26.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to fig. 2, the present invention provides a technical solution: the utility model provides a direct current motor with speed sensor, which comprises a frame 1, fixedly connected with casing 2 on the frame 1, and fixedly connected with rear bearing 3 on the frame 1, rotate on the rear bearing 3 and install pivot 4, and fixedly connected with end cover 5 on the casing 2, fixedly connected with front bearing 6 on the end cover 5, fixedly connected with cassette 7 on the pivot 4, and fixedly connected with separation blade 8 on the cassette 7, fixedly connected with lamp stand 9 on the casing 2, and fixedly connected with laser lamp 10 on the lamp stand 9, fixedly connected with photosensitive sensor 11 on the casing 2, and photosensitive sensor 11 is connected with wave band converter 12, and wave band converter 12 is connected with display panel 13, fixedly connected with straight-bar 14 on the pivot 4, and be provided with spout 15 on the straight-bar 14, fixedly connected with spring 16 in the spout 15, and fixedly connected with slider 17 on the spring 16, threaded connection has adjusting screw 18 on the straight-bar 14, and fixedly connected with stopper 19 on the straight-bar 14, fixedly connected with pressure sensor 20 on the stopper 19, and fixedly connected with slide bar 21 on the slider 17, fixedly connected with video disc 22 on the slide bar 21, fixedly connected with on the end cover 5, and fixedly connected with position ring 23, and increase friction disc 24 and temperature sensor 25, and outage 26.
The casing 2 is installed at the front end of the base 1, the end cover 5 is installed at the front end of the casing 2, the rear bearing 3 and the front bearing 6 are in the same straight line, the rotating shaft 4 is installed between the two, the rotating shaft 4 penetrates through the end cover 5 to be arranged, the casing 2 and the base 1 form a main supporting structure of the direct current motor, the rotating shaft 4 is stably installed in the motor through the rear bearing 3 and the front bearing 6, and the front end of the rotating shaft extends out of the end cover 5 to be connected with a revolving body for driving, so that the basic function of the motor is realized;
two clamping seats 7 are symmetrically arranged on a rotating shaft 4, a blocking piece 8 is of a circular structure, a laser lamp 10 and a photosensitive sensor 11 are respectively arranged on two sides of the rotating shaft 4, a display panel 13 is arranged on the outer wall of a machine shell 2, the laser lamp 10 is supplied with power through a lamp holder 9, so that generated laser can irradiate the photosensitive sensor 11 under normal conditions and is converted into an electric signal, the blocking piece 8 can be driven to rotate continuously in the continuous rotating process of the rotating shaft 4, the light of the laser lamp 10 is blocked intermittently, blank signals are left on the photosensitive sensor 11, the optical signals and the blank signals form a signal wave band which can be transmitted and recorded on a wave band converter 12, the rotating speed of the rotating shaft 4 is in direct proportion to the frequency of the blank signals, and the rotating speed of the rotating shaft 4 can be accurately calculated and displayed on the display panel 13;
2-4 straight rods 14 are annularly and symmetrically arranged on a rotating shaft 4, a sliding groove 15 is formed in the middle of each straight rod 14, a sliding block 17 is connected in the sliding groove 15 in a sliding mode, a spring 16 is connected to the bottom of the sliding block 17, a sliding rod 21 is arranged at the top of the sliding block 17, the sliding block 21 penetrates through the straight rods 14 to be arranged, a disc 22 is arranged at the front end of the sliding block 21, the straight rods 14 rotate along with the rotating shaft 4, the sliding blocks 17 in the straight rods 17 tend to slide outwards under the action of centrifugal force, the spring 16 provides balance force, and the centrifugal force applied to the sliding blocks 17 is increased along with the increase of the rotating speed of the rotating shaft 4, so that the sliding blocks 17 overcome the elastic force of the spring 16 to drive the sliding rods 21 to slide outwards, and braking is performed through the disc 22;
the adjusting screw 18 is installed on the side surface of the sliding block 17, the limiting block 19 is located on the other side of the sliding block 17, a cushion layer is installed on the surface of the limiting block 19, the pressure sensor 20 is installed in the limiting block 19 in an embedded mode, pressure is provided for the sliding block 17 from the side surface through the adjusting screw 18, the sliding block 17 is enabled to be in contact with the limiting block 19 to generate friction force, the sliding block 17 is limited and balanced, the sliding block 17 needs to overcome the friction force and the elastic force of the spring 16 to move, the friction force can be adjusted through the adjusting screw 18, and the pressure sensor 20 is used for conducting balance calibration on the sliding block 17 in the straight rod 14;
the positioning ring 23 is arranged on the inner side of the end cover 5, the friction increasing sheet 24 is arranged on the inner wall of the positioning ring 23, the temperature sensor 25 is connected with the bottom surface of the friction increasing sheet 24, the power-off switch 26 is connected on a power circuit, the positioning ring 23 can play a guiding role in the installation of the end cover 5 and is used for installing the friction increasing sheet 24, when the rotating speed of the rotating shaft 4 is too high, the disc 22 slides out to be in contact with the friction increasing sheet 24, the emergency braking of the rotating shaft 4 can be carried out, meanwhile, the temperature rise caused by the friction between the gasket 22 and the friction increasing sheet 24 can generate an electric signal for the temperature sensor 25, the power-off switch 26 is turned on to cut off the motor, and the damage caused by the too high rotating speed of the rotating shaft 4 is avoided;
the working principle is as follows: firstly, the casing 2 and the base 1 form a main supporting structure of the direct current motor, the rotating shaft 4 is stably installed in the motor through the rear bearing 3 and the front bearing 6, the front end of the rotating shaft extends out of the end cover 5 to be connected with the revolving body for driving, which is a basic function of the motor, in the rotating process of the rotating shaft 4, the laser lamp 10 supplies power through the lamp holder 9, so that the generated laser can irradiate on the photosensitive sensor 11 under normal condition and be converted into electric signals, the rotating shaft 4 can drive the blocking sheet 8 to rotate continuously, so as to block the light of the laser lamp 10 intermittently, thereby blank signals are left on the photosensitive sensor 11, the optical signals and the blank signals form signal wave bands, both the signal wave bands can be transmitted and recorded on the wave band converter 12, and the rotating speed of the rotating shaft 4 is in direct proportion to the frequency of the blank signals, thereby the rotating speed of the rotating shaft 4 can be accurately calculated, and is displayed on the display panel 13, at the same time, the straight rod 14 rotates along with the rotating shaft 4, and the slider 17 therein has a tendency of sliding outwards under the action of centrifugal force, the spring 16 provides balancing force, and the slider 17 is laterally provided with pressure through the adjusting screw 18, so that the slider 17 contacts with the limit block 19 to generate friction force, the slider 17 is limited and balanced, the slider 17 must overcome the friction force and the elastic force of the spring 16 to move, and the magnitude of the friction force can be adjusted through the adjusting screw 18, the pressure sensor 20 is used to perform balance calibration of the sliders 17 in the straight rod 14, as the rotating speed of the rotating shaft 4 increases, the centrifugal force applied to the slider 17 also increases, so that the slider 17 overcomes the elastic force of the spring 16 to drive the sliding rod 21 to slide outwards, the disc 22 slides out to contact with the friction increasing sheet 24, and emergency braking of the rotating shaft 4 can be performed, meanwhile, the temperature rise caused by the friction between the gasket 22 and the friction increasing sheet 24 can generate an electric signal to the temperature sensor 25, turn on the power-off switch 26, and power off the motor, so that the damage caused by the over-high rotating speed of the rotating shaft 4 is avoided.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a direct current motor with speed sensor, includes frame (1), its characterized in that: the automatic pressure gauge is characterized in that a machine shell (2) is fixedly connected onto the machine base (1), a rear bearing (3) is fixedly mounted on the machine base (1), a rotating shaft (4) is rotatably mounted on the rear bearing (3), an end cover (5) is fixedly mounted on the machine shell (2), a front bearing (6) is fixedly mounted on the end cover (5), a clamping seat (7) is fixedly mounted on the rotating shaft (4), a blocking piece (8) is fixedly mounted on the clamping seat (7), a lamp holder (9) is fixedly mounted on the machine shell (2), a laser lamp (10) is fixedly mounted on the lamp holder (9), a photosensitive sensor (11) is fixedly mounted on the machine shell (2), the photosensitive sensor (11) is connected with a band converter (12), the band converter (12) is connected with a display panel (13), a straight rod (14) is fixedly connected onto the rotating shaft (4), a sliding chute (15) is arranged on the straight rod (14), a spring (16) is fixedly mounted in the sliding chute (15), a limiting block (17) is fixedly connected onto the spring (16), an adjusting screw (18) is connected onto the straight rod (14), a straight rod (19) is fixedly mounted on the limiting block (19), and a pressure sensor (20) is fixedly mounted on the limiting block (20), a sliding rod (21) is fixedly installed on the sliding block (17), a disc (22) is fixedly installed on the sliding rod (21), a positioning ring (23) is fixedly installed on the end cover (5), a friction increasing sheet (24) and a temperature sensor (25) are fixedly installed on the positioning ring (23), and the temperature sensor (25) is connected with a power-off switch (26);
2-4 straight rods (14) are annularly and symmetrically arranged on the rotating shaft (4), the sliding groove (15) is formed in the middle of the straight rod (14), the sliding block (17) is connected in the sliding groove (15) in a sliding mode, the spring (16) is connected to the bottom of the sliding block (17), the sliding rod (21) is arranged at the top of the sliding block (17), the sliding rod (21) penetrates through the straight rod (14) to be arranged, and the disc (22) is arranged at the front end of the sliding rod (21);
adjusting screw (18) are installed in the side of slider (17), and stopper (19) are located the opposite side of slider (17), stopper (19) surface mounting has the bed course, and pressure sensor (20) inlay and install in stopper (19).
2. The direct current motor with the speed measuring device according to claim 1, wherein: casing (2) are installed at the front end of frame (1), and end cover (5) install the front end at casing (2), rear bearing (3) are in same straight line with front bearing (6) on, and pivot (4) are installed between the two, and pivot (4) run through end cover (5) and set up.
3. The direct current motor with the speed measuring device according to claim 1, wherein: two clamping seats (7) are symmetrically arranged on the rotating shaft (4), the blocking pieces (8) are of a circular structure, the laser lamp (10) and the photosensitive sensor (11) are respectively arranged on two sides of the rotating shaft (4), and the display panel (13) is arranged on the outer wall of the shell (2).
4. The direct current motor with the speed measuring device according to claim 1, wherein: the locating ring (23) is arranged on the inner side of the end cover (5), the friction increasing sheet (24) is arranged on the inner wall of the locating ring (23), the temperature sensor (25) is connected with the bottom surface of the friction increasing sheet (24), and the power-off switch (26) is connected on a power circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110082083.3A CN112924712B (en) | 2021-01-21 | 2021-01-21 | Direct current motor with speed measuring device |
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| CN202110082083.3A CN112924712B (en) | 2021-01-21 | 2021-01-21 | Direct current motor with speed measuring device |
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| CN112924712A CN112924712A (en) | 2021-06-08 |
| CN112924712B true CN112924712B (en) | 2023-01-03 |
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| CN112924712A (en) | 2021-06-08 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Song Yi Inventor after: Xiao Tingting Inventor after: Xiao Xuesong Inventor after: Qiu Xiang Inventor before: Qiu Xiang |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20221220 Address after: No. 678, South Liming Road, Rongcheng City, Weihai City, Shandong Province Applicant after: Hongyang motor (Weihai) Co.,Ltd. Address before: 341000 No. 86 Hongqi Avenue, Jiangxi, Ganzhou Applicant before: Qiu Xiang |
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