CN210720445U

CN210720445U - Mechanical speed measuring device and coupler thereof

Info

Publication number: CN210720445U
Application number: CN201921723462.0U
Authority: CN
Inventors: 张昊; 李宗辉; 贾新强
Original assignee: Taiyuan No2 Thermal Power Plant Of Datang Shanxi Power Generation Co Ltd
Current assignee: Taiyuan No2 Thermal Power Plant Of Datang Shanxi Power Generation Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-06-09
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses a mechanical speed measuring device and coupler thereof, the latter includes: the first turntable is fixedly connected with equipment to be tested, and a first circumferential limiting part is arranged on the end face of the first turntable; the second turntable is connected with the velometer, a second circumferential limiting piece is arranged on the end face, facing the first turntable, of the second turntable, the first circumferential limiting piece and the second circumferential limiting piece are matched in circumference for limiting, and a magnetic piece is arranged on the second turntable; the electromagnet is arranged on one side, far away from the first rotary disc, of the second rotary disc, and attracts the magnetic piece when the electromagnet is in an electrified state so as to drive the second rotary disc to move towards the direction far away from the first rotary disc and separate from the first rotary disc. When the speed measurement is not needed, the speed measurer cannot rotate along with the equipment to be measured, so that the damage caused by frequent high-speed rotation of the speed measurer is avoided, and the service life of the speed measurer is prolonged.

Description

Mechanical speed measuring device and coupler thereof

Technical Field

The utility model relates to an industry technical field that tests the speed especially relates to a coupler for mechanical speed sensor. The utility model discloses still relate to a mechanical speed sensor including this coupler.

Background

The speed measuring device is applied to the aspects of industrial equipment to meet the speed measuring requirements of various equipment, and in some equipment, the speed is measured only at regular intervals instead of continuously. For example, a belt scale chain code measuring device uses a speed measuring device when parameters need to be measured regularly, the measurement is not needed in most of time, but a sensor is coupled on a belt roller through a coupler and continuously rotates all the time, so that the service life of the sensor is shortened seriously.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve at least one of the above problems, and the object is achieved by the following technical solutions.

The utility model provides a coupler for mechanical speed sensor, include:

the first turntable is fixedly connected with equipment to be tested, and a first circumferential limiting part is arranged on the end face of the first turntable;

the second turntable is connected with the velometer, a second circumferential limiting piece is arranged on the end face, facing the first turntable, of the second turntable, the first circumferential limiting piece and the second circumferential limiting piece are matched in circumference for limiting, and a magnetic piece is arranged on the second turntable;

the electromagnet is arranged on one side, far away from the first rotary disc, of the second rotary disc, and attracts the magnetic piece when the electromagnet is in an electrified state so as to drive the second rotary disc to move towards the direction far away from the first rotary disc and separate from the first rotary disc.

In the working process, when the speed needs to be measured, the first rotating disc is attached to the second rotating disc, and the two rotating discs rotate synchronously under the matching of the first circumferential limiting part and the second circumferential limiting part, so that the equipment to be measured is in transmission connection with the speed measurer, and the speed is measured in time. When the speed measurement is not needed, the electromagnet is electrified, and the magnetic field generated by the electromagnet attracts the magnetic part of the second rotary disc, so that the second rotary disc moves towards the direction close to the electromagnet, namely the second rotary disc moves towards the direction far away from the first rotary disc, and the second rotary disc is separated from the first rotary disc; when waiting to test the speed equipment and rotating this moment, the spare part and the velometer of the coupler except that first carousel all can not rotate along with waiting to test the speed equipment to avoided the frequent high-speed damage that leads to of velometer (the sensor that tests the speed promptly), prolonged the life of velometer.

Further, still include the return spare, the return spare set up in the electro-magnet with between the second carousel, just when the electro-magnet is in the outage state, the drive of return spare the second carousel is to being close to the direction motion of first carousel and laminating in first carousel.

Further, the return piece is a linear spring, and when the first rotary disc and the second rotary disc are in a separated state, the linear spring is in a compressed state; when the first turntable and the second turntable are in a fit state, the linear spring is in a compression state or a free state.

Further, the first circumferential limiting piece is a protruding tooth formed on the end face of the first rotary table, the second circumferential limiting piece is a clamping groove formed on the end face of the second rotary table, and the protruding tooth is detachably clamped in the clamping groove.

Furthermore, the clamping grooves and the convex teeth are provided in plurality, and the clamping grooves and the convex teeth are clamped in a one-to-one correspondence manner.

The utility model also provides a mechanical speed sensor, include as above the coupler.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a specific embodiment of the coupler according to the present invention.

Description of reference numerals:

1-first rotary table 11-convex teeth 2-second rotary table 21-clamping groove

3-velometer 4-electromagnet 5-linear spring

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a specific embodiment of a coupler according to the present invention.

In a specific embodiment, the utility model provides a coupler is used for mechanical speed sensor, and this coupler includes first carousel 1, second carousel 2 and electro-magnet 4, wherein, first carousel 1 with wait to test speed equipment fixed connection, when waiting that test speed equipment rotates, first carousel 1 can be along with waiting to test speed equipment synchronous rotation, second carousel 2 is connected with velometer 3 (being speed sensor, for any sensor that can test the speed among the prior art, do not describe repeatedly), and when first carousel 1 and the butt joint of second carousel 2, velometer 3 can realize waiting to test speed the speed detection of equipment.

A first circumferential limiting part is arranged on the end face of the first rotary table 1, a second circumferential limiting part is arranged on the end face, facing the first rotary table 1, of the second rotary table 2, the first circumferential limiting part and the second circumferential limiting part are circumferentially matched for limiting, and a magnetic part is arranged on the second rotary table 2; the electromagnet 4 is arranged on one side, far away from the first rotary table 1, of the second rotary table 2, and the electromagnet 4 attracts the magnetic piece when in a power-on state so as to drive the second rotary table 2 to move towards the direction far away from the first rotary table 1 and separate from the first rotary table 1.

Obviously, the velometer 3 and the electromagnet 4 both need to be externally connected with a power supply and are electrically connected with the external power supply through a lead so as to realize power on and power off.

After first carousel 1 and second carousel 2 are separated under the effect of electro-magnet 4, reuse needs manual return, and not only the working process is loaded down with trivial details, and need wait that speed measuring equipment shuts down, influences production process. Therefore, in order to overcome the above problem, when the speed needs to be measured again, the second rotary table 2 can be reset, so that the working efficiency is improved, the coupler further comprises a resetting piece, the resetting piece is arranged between the electromagnet 4 and the second rotary table 2, and when the electromagnet 4 is in a power-off state, the resetting piece drives the second rotary table 2 to move towards the direction close to the first rotary table 1 and is attached to the first rotary table 1. Like this, after electro-magnet 4 outage, second carousel 2 loses the power of keeping away from first carousel 1 direction that electro-magnet 4 exerted, and return member promotes second carousel 2 to the direction motion that is close to first carousel 1 to realize the reseing of second carousel 2, make the coupler realize the coupling that resets.

Specifically, the return member is a linear spring 5, when the first turntable 1 and the second turntable 2 are in a separated state, the linear spring 5 is in a compressed state, and at this time, the linear spring 5 has an acting force towards the first turntable 1 direction on the second turntable 2, and the acting force is offset by the attraction force of the electromagnet 4 and cannot generate displacement; when the first rotary table 1 and the second rotary table 2 are in a joint state, the linear spring 5 is in a compression state or a free state, and at the moment, the linear spring 5 has acting force towards the first rotary table 1 direction on the second rotary table 2 or has no acting force on the second rotary table 2.

The limiting member arranged between the first rotating disk 1 and the second rotating disk 2 needs to be capable of realizing circumferential limiting, specifically, the first circumferential limiting member is a convex tooth 11 arranged on the end face of the first rotating disk 1, the second circumferential limiting member is a clamping groove 21 arranged on the end face of the second rotating disk 2, and the convex tooth 11 is detachably clamped in the clamping groove 21.

In order to ensure the reliability of circumferential limiting and ensure the follow-up property during circumferential rotation, a plurality of clamping grooves 21 and the plurality of convex teeth 11 are arranged, and each clamping groove 21 and each convex tooth 11 are clamped in a one-to-one correspondence manner.

In the working process, when the speed needs to be measured, the first rotating disc 1 is attached to the second rotating disc 2, and the two rotating discs rotate synchronously under the matching of the first circumferential limiting part and the second circumferential limiting part, so that the equipment to be measured in speed is in transmission connection with the speed measurer 3, and the speed is measured in time. When the speed measurement is not needed, the electromagnet 4 is electrified, and the magnetic field generated by the electromagnet 4 attracts the magnetic part of the second rotating disc 2, so that the second rotating disc 2 moves towards the direction close to the electromagnet 4, namely the second rotating disc 2 moves towards the direction far away from the first rotating disc 1, and the second rotating disc 2 is separated from the first rotating disc 1; when waiting to test the speed equipment and rotating this moment, the spare part of coupler and velometer 3 except that first carousel 1 all can not rotate along with waiting to test the speed equipment to avoided velometer 3 (the sensor that tests the speed promptly) frequent high-speed damage that leads to of rotating, prolonged velometer 3's life.

In addition to the coupler, the utility model also provides a mechanical speed measuring device including this coupler, and prior art is referred to other each partial structures of this mechanical speed measuring device, and the no longer repeated description is given here.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A coupler for a mechanical tachometer, comprising:

2. The coupler of claim 1, further comprising a return member, wherein the return member is disposed between the electromagnet and the second turntable, and when the electromagnet is in the power-off state, the return member drives the second turntable to move toward the direction close to the first turntable and to be attached to the first turntable.

3. The coupler of claim 2, wherein the return member is a linear spring, the linear spring being in compression when the first and second discs are in the disengaged state; when the first turntable and the second turntable are in a fit state, the linear spring is in a compression state or a free state.

4. The coupler according to claim 1, wherein the first circumferential limiting member is a protruding tooth formed on an end surface of the first rotary disk, the second circumferential limiting member is a slot formed on an end surface of the second rotary disk, and the protruding tooth is detachably engaged with the slot.

5. The coupler of claim 4, wherein the plurality of card slots and the plurality of teeth are provided, and each card slot is engaged with each tooth in a one-to-one correspondence.

6. A mechanical tachometer comprising a coupler according to any of claims 1 to 5.