CN209802294U

CN209802294U - Desktop formula curve measuring device

Info

Publication number: CN209802294U
Application number: CN201920116696.2U
Authority: CN
Inventors: 徐一承
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2019-12-17
Anticipated expiration: 2029-01-16

Abstract

The utility model discloses a desktop formula curve measuring device relates to the measuring instrument field, a desktop formula curve measuring device, including the body, through the gyro wheel of bearing setting in body one end, still be provided with grating dish and infrared sensor on the body, grating dish with be connected with drive disk assembly between the gyro wheel, infrared sensor sets up the outer fringe of grating dish, infrared sensor is connected with the controller, the controller is connected with the display screen. This scheme of adoption back gyro wheel passes through drive disk and rotates, can improve the rotational speed of grating dish, can improve the frequency that infrared sensor read the grating dish, has finally improved measuring precision, the utility model discloses simple structure, simple and convenient easy-to-use is particularly suitable for using like colony users such as students.

Description

Desktop formula curve measuring device

Technical Field

The utility model relates to a measuring appliance, in particular to desktop formula curve measuring device.

Background

As students often need to measure the length of some curves, such as the circumference of a circle or an ellipse, and also the length of a rail or a meandering stream on a map, it is inconvenient to use the conventional ruler, and the accuracy of the measurement is low.

Roll the chi and be used for measuring length's common instrument through calculating the gyro wheel number of turns that rotates, use in fields such as construction usually, but in the desktop range of application, if measure the length of an irregular curve, use and roll the chi and still have measurement accuracy not accurate enough, use inconvenient problem inadequately.

in view of the above, the present inventors have studied this, and have developed a desktop curve measuring apparatus, which is capable of improving the accuracy of measurement and is particularly suitable for students.

Disclosure of Invention

An object of the utility model is to provide a desktop formula curve measuring device to solve prior art, when measuring curved length, it is inconvenient to use, and measurement accuracy is not accurate enough technical problem.

In order to achieve the above purpose, the technical solution of the present invention is as follows:

the utility model provides a desktop formula curve measuring device, includes the body, through the gyro wheel of bearing setting in body one end, still is provided with grating dish and infrared sensor on the body, the grating dish with be connected with drive disk between the gyro wheel, infrared sensor sets up the outer fringe of grating dish, infrared sensor is connected with the controller, the controller is connected with the display screen.

Furthermore, the roller is a conical roller, and a rubber material is attached to the rolling surface of the roller. The tapered roller can improve the transverse width of the bearing, improves the rolling precision, is convenient for a user to observe the rolling contact part, and the rubber material can play a role in skid resistance.

Furthermore, the middle part of the rolling surface of the roller is provided with an annular groove. The user can embed the curve to be measured in the groove, so that the measurement precision is improved.

Furthermore, the side of the roller is provided with an origin mark. The user can place the origin mark at one end of the curve to be measured, so that accurate positioning is facilitated.

Further, be provided with the observation window on the body, through the observation window can observe the origin sign.

Further, all there is the arrow mark upper and lower of origin sign, the observation window is provided with arrow shape lug. The arrow-shaped convex block can be aligned with the arrow mark marked by the origin, so that the positioning is clearer and more accurate.

Furthermore, the tail end of the observation window is provided with an illuminating lamp. The utility model is convenient for use when the light is not good, and is also convenient for the user to observe the curve trend with measurement.

Further, the grating disc and the infrared sensor are arranged at the position, close to the inner side, of the body, and the grating disc and the infrared sensor and the illuminating lamp are respectively located on two sides of the roller. The influence of the illuminating lamp on the infrared sensor is reduced.

Further, the transmission component can force the grating disk to rotate at a rotating speed larger than that of the roller. After the high rotating speed of the grating disc is increased, the frequency of reading the grating disc by the infrared sensor can be increased, and the measurement precision is further improved.

Furthermore, a level meter is arranged at the top end of the other side, opposite to the roller, of the body, and the setting direction of the level meter is consistent with the rotation direction of the roller. When the user is measuring initial state and final state, accessible observation spirit level makes the body keep relative vertical state, improves measurement accuracy.

After the scheme is adopted, the utility model discloses contrast prior art has following beneficial benefit:

The roller drives the grating disc to rotate through the transmission part, so that the rotating speed of the grating disc can be improved, the frequency of reading the grating disc by the infrared sensor can be improved, and the measurement precision is finally improved;

Through the transmission part, the grating disc and the infrared sensor can be arranged in the body, so that the probability of possible damage or stain of the precise grating disc during use is reduced;

The infrared sensor, the controller and the display screen can realize the digital output of the measured length, thereby being convenient for observation and use;

The utility model has simple structure, is simple and easy to use, and is particularly suitable for group users such as students.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of a local structure near the roller of the present invention.

Fig. 3 is a schematic structural diagram of the roller of the present invention.

Detailed Description

The utility model discloses an original intention is to solve the problem that the student is difficult to measure irregular curve on the desktop, measuring like the length of circle, ellipse or arbitrary curve, or when measuring the length of a rail or a river that meanders the curve on the map, it can be comparatively difficult to use traditional mode, and measuring precision is also very low, so through measuring the mode and the result difference that obtains through the mode of calculating also great, and also do not have comparatively accurate, the curve measuring device that the student of being convenient for used on the market.

Referring to fig. 1, 2 and 3, a desktop curve measuring device comprises a body 1, a roller 2 arranged at one end of the body through a bearing, a grating disk 3 and an infrared sensor 4 arranged on the body 1, a transmission part connected between the grating disk 3 and the roller 2, the transmission component can be a gear structure, a belt wheel structure or a friction wheel and the like, the infrared sensor 4 is provided with an emitting end and a receiving end, the emitting end and the receiving end are respectively arranged on two sides of the outer edge of the grating disk 3 in a straddling manner, when the grating disk 3 rotates, the transmitting end transmits infrared rays to the receiving end, the receiving end receives a pulse signal of the infrared rays after the barrier of the grating disk 3, and converting the pulse signal into a digital signal, and transmitting the digital signal to a controller, the controller multiplying the digital signal by a certain unit value, and outputs the accumulated result to the display screen 11 for displaying and outputting the length value of the user.

The gyro wheel 2 is the toper gyro wheel, and the rolling surface that gyro wheel 2 and the volume of awaiting measuring object contact is with round rubber materials, and the toper gyro wheel can improve the transverse width of its bearing, improves the roll precision, and also convenient to use person observes rolling contact department simultaneously, and rubber materials can play skid-proof effect, prevents that gyro wheel 1 from measuring the object department slip of measuring, influences measuring precision. The middle part of the rolling surface of the roller 2 is provided with a circle of annular groove 22, a user can embed a curve to be measured in the groove 22 for alignment, and the roller 1 can be ensured to advance along the direction of the curve, thereby avoiding deviation and improving the measurement precision.

The side of gyro wheel 1 is provided with origin sign 21, this origin sign 21's upper and lower end all has the arrow point sign, when measuring initial state, the user can arrange the origin sign in the curved one end of measurement in, the accurate location of being convenient for, the one end that is close to the gyro wheel at body 1 is provided with observation window 12, origin sign 21 can be observed through observation window 12, still be provided with arrow head form lug on the observation window 12 simultaneously, this arrow head form lug can align with the arrow point sign of origin sign 21 upper end.

On body 1, the end of observation window 12 is provided with LED light 13, and the light of being convenient for uses when not good, and the user of also being convenient for observes the trend of the curved of awaiting measuring, and grating disc 3 and infrared sensor 4 set up the position by the inboard at body 1 to be located the both sides of gyro wheel 2 respectively with LED light 13. The influence of the LED illuminating lamp on the work of the infrared sensor 4 can be reduced, the grating disk 3 and the infrared sensor 4 are arranged at the position inside the body 1, and the probability of possible damage or stain of the precise grating disk during operation can be reduced.

The top end of the body 1 opposite to the roller 2 is provided with a bubble type level meter 14, the setting direction of the level meter 14 is consistent with the rotating direction of the roller 2, one side of the body 1 is provided with three keys 15 which are respectively a power key, a reset key and an illumination key, and the keys 15 are respectively connected with a power supply, a controller, an infrared sensor 4, a display screen 11 and an LED illuminating lamp 13.

As a preferred embodiment, the transmission component is a gear set 5, the transmission ratio is 1: 4, that is, the roller 2 rotates one circle, and can drive the grating disk 3 to rotate four circles, 60 grating strips are uniformly arranged on the grating disk one circle, the diameter of the roller 2 is 4 cm, and further the length of the roller 2 running one circle is 12.56 cm, that is, each grating strip represents a step of 0.0523 cm;

when the intelligent measuring device is used, a user enables the origin mark 21 to be located at one end of a curve to be measured, the body 1 is ensured to be in a vertical state by observing the level meter 14, then the controller is reset through the key 15, the body 1 is moved backwards and controlled to roll forwards along the curve track, the roller 2 drives the grating disc 3 to rotate through the gear set 5 at the moment, the infrared sensor 4 obtains a pulse signal, after the controller receives a numerical signal of the infrared sensor 4, the stepping number of the infrared sensor is multiplied by 0.0523 cm, the accumulated length numerical value is output through the display screen 11 in real time, and when the end point of the curve is reached, the user enables the body 1 to be in the vertical state by observing the level meter 14, and finally the length of the current curve can be known through the display screen 11.

Therefore, the utility model relates to a desktop formula curve measuring device has realized the measurement of the higher accuracy to curve length to user such as colony such as specially adapted student are used for measuring circle, oval girth, or measurement such as the length of other curves.

Claims

1. The utility model provides a desktop formula curve measuring device which characterized in that: the roller is arranged at one end of the body through a bearing, a grating disc and an infrared sensor are arranged on the body, a transmission part is connected between the grating disc and the roller, the infrared sensor is arranged at the outer edge of the grating disc, the infrared sensor is connected with a controller, and the controller is connected with a display screen.

2. The table-top curve measuring device of claim 1, wherein: the roller is a conical roller, and the rolling surface of the roller is attached with a rubber material.

3. The table-top curve measuring device of claim 2, wherein: and the middle part of the rolling surface of the roller is provided with an annular groove.

4. The table-top curve measuring device of claim 1, wherein: and an origin mark is arranged on the side edge of the roller.

5. the table-top curve measuring device of claim 4, wherein: the body is provided with an observation window, and the origin mark can be observed through the observation window.

6. The table top curve measuring device of claim 5, wherein: the upper and lower of origin sign all has the arrow mark, the observation window is provided with arrow form lug.

7. the table top curve measuring device of claim 5, wherein: and the tail end of the observation window is provided with an illuminating lamp.

8. the desktop type curve measuring device of claim 7, wherein the grating disk and the infrared sensor are disposed at a position near the inner side of the body, and the grating disk and the illuminating lamp are respectively disposed at two sides of the roller.

9. The table-top curve measuring device of claim 1, wherein: the transmission component can force the grating disk to rotate at a rotating speed larger than that of the roller.

10. The table top curve measuring device of any one of claims 1 to 9, wherein: the top of the body relative to the other side of the roller is provided with a level gauge, and the setting direction of the level gauge is consistent with the rotation direction of the roller.