CN202420437U

CN202420437U - Length measuring instrument

Info

Publication number: CN202420437U
Application number: CN2011205358081U
Authority: CN
Inventors: 贺娜英
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-09-05
Anticipated expiration: 2021-12-20

Abstract

A length measuring instrument comprises a shell and a support component. A single board computer having a zero clearing function and a power source are mounted in the shell, a spindle penetrating through the shell and a measuring wheel are fixedly arranged on the lower portion of the shell, light transmitting holes are arranged on spokes of the measuring wheel, a light signal transmitter and a light signal receiver are mounted on the inner wall of the shell, the light signal transmitter and the light signal receiver transmits and receives light signals through the light transmitting holes, the support component comprises a console, and a power source switch, a zero clearing button and a decade digital device are arranged on the console. The light signal transmitter transmits light signals through the light transmitting hole and the light signal receiver receives the light signals through the light transmitting holes, the light signals are transmitted to the digital device after being processed by the single board computer having the zero clearing function, and the digital device can cumulatively display quantity of the light signals, so that length can be measured. The length measuring instrument is particularly suitable for measuring length of long-distance curves and is visual in measuring result display, convenient to use and high in operating efficiency.

Description

Length measuring instrument

Technical field

The utility model relates to a kind of gauging instrument, particularly a kind of instrument of measuring length.

Background technology

Dimensional measuring instrument in the market is a lot, for example: clockwork spring chi, tape measure, box chi, tape measure etc.Can measure straight length accurately with these survey instruments than small scale.But than large scale, fields such as the not high field cable laying of accuracy requirement, building operation in the time of particularly need measuring length of curve, are used very inconvenient.

The utility model content

The technical matters that the utility model will solve provide a kind of rational in infrastructure, simple, can measure the length of a curve survey instrument.

The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be: a kind of length measuring instrument; Comprise housing and bracket component, single card microcomputer and the power supply with Protection Counter Functions is installed in the said housing, run through the main shaft of housing in said lower part of frame fixed installation; Measuring wheel is rotatably mounted in the main shaft middle part; The part of said measuring wheel is stretched out outside the housing, and the parallel main axis direction has the printing opacity mouth on the said measuring wheel spoke, fixed installation optical signal transmitter and receiver on the said inner walls; Said optical signal transmitter and receiver lay respectively at the both sides of measuring wheel; And can transmit and receive light signal through the printing opacity mouth, said bracket component comprises handle, front and back arm, and an end of said front and back arm is fixedly connected on the two ends of said main shaft respectively; The other end connects handle respectively; Connect control desk between the said handle, the digital device of power switch, reset button and decade is installed on the said control desk, said optical signal transmitter and receiver transmit and receive light signal through said printing opacity mouth; After handling, the single card microcomputer that said light signal is had a Protection Counter Functions is transferred to said number implement, the quantity of the said light signal of demonstration that said number implement can add up.

The length measuring instrument of the utility model, wherein, said printing opacity mouth is 1.

The length measuring instrument of the utility model, wherein, said printing opacity mouth also can be for a plurality of, and it is on the circumference in the center of circle with the spindle axis that said printing opacity mouth is uniformly distributed in one.

The utility model length measuring instrument, when measuring wheel rotated, data presented was the quantity that receiver receives light signal on the number implement; When the shading hole was one, data presented was the accumulated value of several measuring wheel girths on the number implement, when light hole quantity when being a plurality of; Data presented is the accumulated value of corresponding measuring wheel wheel rim length between adjacent two holes on the number implement; Can measure length thus, especially be fit to measure the length of curve of long distance, intuitive measurement results shows; Easy to use, high efficiency.

Description of drawings

Fig. 1 is the front view of the utility model length measuring instrument;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is the cut-open view of Fig. 1;

Fig. 4 is the A-A cut-open view of Fig. 3;

Fig. 5 is the circuit diagram of the utility model length measuring instrument.

Embodiment

Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the utility model length measuring instrument comprises housing 1 and bracket component 10.The upper plate of housing 1 is dismountable to be fixed on the left and right sides wallboard of housing 1.The parallel dividing plate 2 that is welded with of housing 1 left and right sides inwall; Dividing plate 2 is divided into two parts up and down with housing 1 inner space; Wherein top space mounting battery feed 58 and single card microcomputer 51 with Protection Counter Functions; Fixed installation runs through the main shaft 3 of housing 1 in the bottom of housing 1, the two ends of main shaft 3 respectively with forearm 11, postbrachium 12 welding of support 10.In main shaft 3 middle parts, through the rotatable wheel 4 that installs and measures of bearing.The part of measuring wheel 4 is stretched out outside the housing 1; On the spoke of measuring wheel 4; With a fixed value is that radius is done circle; Parallel main axis 3 directions have some light holes 50 on circumference, and light hole 50 is uniformly distributed on this circumference, and two the light holes 50 corresponding wheel rim length adjacent along this circumference are 1 centimetre.Below dividing plate 2, welding bay 51 on housing 1 rear wall, bay 51 built-in RF transmitters 52.At housing 1 front side wall correspondence position welding receiving chamber 53, a built-in infrared receiver 54.When measuring wheel 4 rotations, infrared receiver 54 is through the infrared signal of light hole 50 receiving infrared-ray transmitters 52 emissions.Housing 1 rear portion source of welding current pilot lamp 55.Welding scraper plate 7 is used for wiping off the earth on the measuring wheel 4 on housing 1 inwall.

Bracket component 10 comprises handle 13,14.Handle 13, weld plate 15 between 14, sheet metal 15 be as the control desk of the utility model length measuring instrument, and the digital device 62 of decade that switch knob 60, reset button 61, four figures show is installed above.Weld

auxiliary wheel support

16,17 on the forearm 11 of bracket component 10, the postbrachium 12 respectively,

auxiliary wheel support

16,17 lower ends are installed

auxiliary wheel

18,19 respectively.

As shown in Figure 5, the circuit of the utility model length measuring instrument comprises power supply, has the single card microcomputer 51 of data Protection Counter Functions, RF transmitter 52, infrared receiver 54, power light 55 and power switch.Wherein, power supply, power switch and power light 55 composition loops, RF transmitter 52 is parallelly connected with power light 55; Single card microcomputer 51 1 termination powers are anodal; The other end connects infrared receiver 54, infrared receiver 54 1 end ground connection, and single card microcomputer 51 is connected number implement 62.After power supply is opened; RF transmitter 52 continues the emission infrared signal; When measuring wheel 4 rotations; Infrared remote receiver 54 is through light hole 50 receiving optical signals on the measuring wheel 4, and it is passed to the single card microcomputer 51 with data Protection Counter Functions, exports to the digital device 62 of decade after handling through single card microcomputer 51.Wherein on behalf of measuring wheel 4, each light signal turn over 1 centimetre, and the numerical value that shows on the number implement 62 equals measuring wheel 4 and turns over adding up of length.

When using the utility model length measuring instrument to carry out field survey, measuring wheel 4 is placed a starting point measuring length, starting switch handle 60; Promote measuring

instrument handle

13,14, measuring wheel 4 is rotated along slotted line advance, walk to when measuring terminal point; Can from number implement 62, directly read measurement data; Then press reset button 61, then single card microcomputer 51 data zero clearings can be measured next time.

Above embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that the common engineering technical personnel in this area make the technical scheme of the utility model all should fall in the protection domain that claims of the utility model confirm.

Claims

1. length measuring instrument; It is characterized in that; Said length measuring instrument comprises housing (1) and bracket component (10), and single card microcomputer (51) and the power supply (58) with Protection Counter Functions is installed in the said housing (1), runs through the main shaft (3) of housing (1) in the fixed installation of the bottom of said housing (1); Measuring wheel (4) is rotatably mounted in main shaft (3) middle part; The part of said measuring wheel (4) is stretched out outside the housing (1), and parallel main axis (3) direction has printing opacity mouth (50) on said measuring wheel (4) spoke, fixedly mounts optical signal transmitter (52) and receiver (54) on said housing (1) inwall; Said optical signal transmitter (52) and receiver (54) lay respectively at the both sides of measuring wheel (4); And can transmit and receive light signal through printing opacity mouth (50), said bracket component (10) comprises handle (13,14), front and back arm (11,12), and an end of said front and back arm (11,12) is fixedly connected on the two ends of said main shaft (3) respectively; The other end connects handle (13,14) respectively; Said handle connects control desk (15) between (13,14), and said control desk (15) is gone up the digital device (62) of power switch (60), reset button (61) and decade is installed, and said optical signal transmitter (52) and receiver (54) transmit and receive light signal through said printing opacity mouth (50); After handling, the single card microcomputer (51) that said light signal is had a Protection Counter Functions is transferred to said number implement (62), the quantity of the said light signal of demonstration that said number implement (62) can add up.

2. length measuring instrument as claimed in claim 1 is characterized in that, said printing opacity mouth (50) is 1.

3. length measuring instrument as claimed in claim 1 is characterized in that, said printing opacity mouth (50) is a plurality of, and it is on the circumference in the center of circle with main shaft (3) axle center that said printing opacity mouth (50) is uniformly distributed in one.

4. like claim 2 or 3 described length measuring instruments, it is characterized in that, connect auxiliary wheel support (16,17) on the front and back arm of said bracket component (10) (11,12) respectively, auxiliary wheel support (16,17) lower end is installed auxiliary wheel (18,19) respectively.

5. like claim 2 or 3 described length measuring instruments, it is characterized in that fixing scraper plate (7) on said housing (1) inwall.