CN106500566A - Dotted-line style mileage measurement apparatus - Google Patents

Abstract

The invention relates to the technical field of distance measurement, in particular to a dot-line mileage measuring device, comprising: a driving wheel rolling on a surface to be measured, a decimal scale gear transmission group, an integer scale gear transmission group, a gear transmission set on a decimal scale The decimal dial at the end of the group and the integer dial arranged at the end of the integer scale gear transmission shaft; the beginning of the decimal scale gear transmission group and the beginning of the integer scale gear transmission group are coaxially arranged with the driving wheel, and the decimal dial has There are n scale lines arranged in an array around its circumference, the radius of the driving wheel is r, the transmission ratio of the fractional scale gear transmission set is a, and the transmission ratio of the integer scale gear set is b, The integer scale has t scale marks arranged in an array around its circumference, According to the pointer index on the integer dial and the pointer index on the decimal dial, the length of the driving wheel rolling can be calculated. The invention is easy to operate, and one person can measure the length of a relatively long construction.

Description

Point-line mileage measuring device

technical field

The invention relates to the technical field of distance measurement, in particular to a measuring device for point-line measurement of a relatively long distance.

Background technique

At present, the common devices on the market to measure the straight-line distance between the two ends are usually: tape measure, steel ruler measurement, line-of-sight measurement, photoelectric measurement, etc.; the measurement accuracy is not high, and the reading data is easily affected by human factors. Cause measurement errors, photoelectric measurement needs to use optical and electronic technologies, and it is inconvenient to use. Especially for the high-precision measurement requirements of large-scale engineering structural parts, it is difficult for the above-mentioned measuring devices to meet the requirements. On the other hand, when measuring large-scale structural parts, two people are often required to be located at the two ends of the required measurement, and it is easy for two people to operate cause measurement errors.

Contents of the invention

The present invention aims at the problems of complex operation, easy to be affected by factors, and low measurement accuracy in the prior art, and researches and designs a point-line mileage measurement device that can complete the length measurement of large structural parts by one person and has high measurement accuracy.

The technical scheme adopted in the present invention is:

A point-line mileage measuring device, characterized in that it includes: a driving wheel rolling on the surface to be measured, a decimal scale gear transmission group, an integer scale gear transmission group, and a decimal dial arranged at the end of the decimal scale gear transmission group and the integer dial arranged at the end of the integer scale gear transmission shaft; the beginning of the decimal scale gear transmission set and the beginning of the integer scale gear transmission set are coaxially arranged with the driving wheel, and the decimal scale has a ring around it. There are n scale lines arranged in a circular array, and the angle of a grid formed between adjacent scale lines is degrees, if the radius of the driving wheel is set to r, the transmission ratio of the decimal scale gear transmission set is a, and the transmission ratio of the integer scale gear set is b, then each grid on the decimal scale represents m, of which If the integer scale has t scale lines arranged in an array around its circumference, the angle of a grid formed between adjacent scale lines is degrees, each division on the integer dial represents m, of which According to the pointer index on the integer dial and the pointer index on the decimal dial, the length of the driving wheel rolling can be calculated.

Further, where a=1:1, b=1:54.

Further, the fractional scale gear transmission set includes a first gear arranged coaxially with the drive wheel, a second gear externally meshed with the first gear, and a third gear externally meshed with the second gear, The decimal dial is arranged coaxially with the third gear, and the center distance between the first gear and the second gear and the center distance between the second gear and the third gear are both c.

Further, the integer scale gear set includes a first gear, a second gear, a fourth gear coaxially arranged with the second gear, a fifth gear externally meshed with the fourth gear, and the fifth gear the sixth gear arranged coaxially with the gears, the seventh gear meshed externally with the sixth gear, the eighth gear arranged coaxially with the seventh gear, and the ninth gear meshed externally with the eighth gear; The integer dial is arranged coaxially with the ninth gear.

Further, the center distance between the fourth gear and the fifth gear, the center distance between the sixth gear and the seventh gear, and the center distance between the eighth gear and the ninth gear are all d.

Further, where c=36mm, d=40mm.

Further, the measuring device also includes two side plates, and both the decimal scale gear transmission set and the integer scale gear transmission set are sandwiched between the two side plates, and are used to install the shafts of the gears in the two gear transmission sets. Mounted on both side panels.

Further, the side plate is equipped with a handle which is convenient to hold and push the measuring device to move.

Further, a pier is fixed under the side plate, and the pier and the two driving wheels jointly support the measuring device so that it does not fall down when no one is supporting it.

Furthermore, the shaft used to install the driving wheels is the first shaft, and the two driving wheels are installed on the outside of the two side plates, and are respectively fixed on the first shaft with pins.

Compared with the prior art, the present invention obviously has the following beneficial effects:

1. One person can push the measuring device to move and calculate the rolling distance of the driving wheel according to the readings of the integer dial and the decimal dial, which is easy to operate.

2. The integer value calculated by the reading of the integer dial plus the decimal value calculated by the reading of the decimal dial can be used to obtain the length value to be measured, with an accuracy of 0.01m and high precision.

3. It can meet the high-precision measurement requirements of large-scale engineering structural parts, adapt to the needs of the real society, and has great social and economic value.

4. It adopts gear meshing transmission, large transmission torque, accurate measurement, and easy implementation, which can reduce various losses caused by human factors in the measurement process.

5. The transmission runs smoothly and reliably, with little vibration and noise, and is easy to use.

6. The operation efficiency is high, which saves the workload of traditional measurement methods such as manual ruler measurement, and improves the measurement efficiency.

Description of drawings

Fig. 1 is a front view of an embodiment of the present invention;

Fig. 2 is a schematic diagram of gear transmission according to an embodiment of the present invention;

In the figure, 1. driving wheel, 2. decimal dial, 3. integer dial, 4. first gear, 5. second gear, 6. third gear, 7. fourth gear, 8. fifth gear, 9, the sixth gear, 10, the seventh gear, 11, the eighth gear, 12, the ninth gear, 13, the side plate, 14, the operating handle, 15, the piers, 16, the first shaft.

detailed description

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

In describing the present invention, it is to be understood that the terms "radial", "axial", "upper", "lower", "top", "bottom", "inner", "outer" etc. indicate orientation Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , and therefore cannot be construed as a limitation of the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

A point-line mileage measuring device as shown in Figures 1 and 2, comprising: a drive wheel 1 rolling on the surface to be measured, a decimal scale gear transmission group, an integer scale gear transmission group, and a gear transmission set on a decimal scale The decimal dial 2 at the end of the group and the integer dial 3 arranged at the end of the integer scale gear shaft; There are n scale lines arranged in an array around its circumference, and the angle of a grid formed between adjacent scale lines is degree, if the radius of the drive wheel 1 is set to r, the transmission ratio of the decimal scale gear transmission set is a, and the transmission ratio of the integer scale gear set is b, then each grid on the decimal scale dial 2 represents m, of which If the integer dial 3 has t scale lines arranged in an array around its circumference, the angle of a grid formed between adjacent scale lines is degrees, each grid on the integer dial 3 represents m, of which According to the pointer index on the integer dial 3 and the pointer index on the decimal dial 2, the length that the driving wheel 1 rolls can be calculated.

In this embodiment, a=1:1, b=1:54 can be used, and t=54 scale marks can be set on the integer dial 3. If the integer dial does not turn one grid, it means that the driving wheel rotates one circle. The circumference of the wheel is 350mm, then The radius of the driving wheel r=55.73mm. If n=35 scale lines are set on the decimal dial, then each step of the decimal dial represents In this way, the accuracy measured by the device can reach 0.01m.

In this embodiment, referring to FIG. 2 , the fractional scale gear transmission set includes a first gear 4 coaxially arranged with the drive wheel 1 , a second gear 5 externally meshed with the first gear 4 , and a second gear externally meshed with the second gear 5 . Three gears 6, the decimal dial 2 and the third gear 6 are arranged coaxially, the center distance between the first gear 4 and the second gear 5 and the center distance between the second gear 5 and the third gear 6 are both c. The integer scale gear set includes a first gear 4, a second gear 5, a fourth gear 7 coaxially arranged with the second gear 5, a fifth gear 8 externally meshed with the fourth gear 7, and a coaxially arranged fifth gear 8. The sixth gear 9, the seventh gear 10 externally meshed with the sixth gear 9, the eighth gear 11 coaxially arranged with the seventh gear 10, the ninth gear 12 externally meshed with the eighth gear 11; the integer dial 3 It is arranged coaxially with the ninth gear 12 . The center distance between the fourth gear 7 and the fifth gear 8 , the center distance between the sixth gear 9 and the seventh gear 10 , and the center distance between the eighth gear 11 and the ninth gear 12 are all d. Where c=36mm, d=40mm.

In this embodiment, the measuring device also includes two side plates 13, the decimal scale gear transmission group and the integer scale gear transmission group are sandwiched between the two side plates 13, and the shafts used to install the gears in the two gear transmission groups are evenly arranged. Set up on the side panels 13. The side plate 13 is equipped with a joystick that is convenient to hold and pushes the measuring device to move. The bottom of the side plate 13 is also fixed with a pier foot 15, and the pier foot 15 and the two driving wheels 1 jointly support the measurement device and keep it from falling down when no one is helping it. The axle that is used for installing driving wheel 1 is first shaft 16, and two driving wheels 1 are installed on the outside of side plate 13, and are fixed on the first shaft 16 with pin respectively.

Side plate 13 material adopts plastic plate, light and labor-saving, it is more convenient to use. Driving wheel 1 adopts No. 45 steel.

Specifically, people hold the operating handle 14 to push the driving wheel 1 to roll along the surface to be measured, and calculate and measure the distance that the driving wheel 1 rolls. The driving wheel 1 drives the pointer of the decimal dial 2 to rotate through the decimal scale gear transmission group. , according to the transmission ratio of the decimal scale gear transmission group and the diameter of the driving wheel 1, the fractional part of the distance that the driving wheel 1 has rolled can be calculated. The driving wheel 1 drives the pointer of the integer dial 3 to rotate through the integer scale gear transmission group. According to the transmission ratio of the integer scale gear transmission group and the diameter of the driving wheel 1, the rolling distance of the driving wheel 1 can be calculated, and the integer part is taken and added According to the decimal part calculated by the decimal dial 2, the precise distance that the drive wheel 1 rolls over can be obtained.

The above-mentioned ideal embodiment according to the present invention is an inspiration. Through the above-mentioned description, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (10)

1. A point-line mileage measuring device, characterized in that it comprises: a drive wheel (1) rolling on the surface to be measured, a decimal scale gear transmission group, an integer scale gear transmission group, and a decimal scale gear transmission group The decimal dial (2) at the end and the integer dial (3) that are arranged on the end of the integer scale gear transmission shaft; (1) coaxial arrangement, on the said decimal dial (2) there are n scale lines arranged in a circular array around it, and the angle of a grid formed between adjacent scale lines is degree, if the radius of the driving wheel (1) is set to r, the transmission ratio of the decimal scale gear transmission set is a, and the transmission ratio of the integer scale gear set is b, then each grid on the decimal scale dial (2) represents m, of which If the integer scale (3) has t scale lines arranged in a circular array around it, the angle of a grid formed between adjacent scale lines is degrees, each grid on the integer dial (3) represents m, of which According to the pointer index on the integer dial (3) and the pointer index on the decimal dial (2), the length that the driving wheel (1) rolls can be calculated. 2. The point-line mileage measuring device according to claim 1, wherein a=1:1, b=1:54. 3. The dot-line mileage measuring device according to claim 1 or 2, characterized in that, the decimal scale gear transmission group comprises a first gear (4) coaxially arranged with the driving wheel (1), and The second gear (5) which is externally meshed with the first gear (4) and the third gear (6) which is externally meshed with the second gear (5), the decimal dial (2) and the third The gears (6) are arranged coaxially, and the center distance between the first gear (4) and the second gear (5) and the center distance between the second gear (5) and the third gear (6) are c. 4. The dot-line mileage measuring device according to claim 3, characterized in that, the integer scale gear set comprises a first gear (4), a second gear (5), and the second gear (5) The fourth gear (7) arranged coaxially, the fifth gear (8) meshing externally with the fourth gear (7), the sixth gear (9) arranged coaxially with the fifth gear (8), A seventh gear (10) that is externally meshed with the sixth gear (9), an eighth gear (11) coaxially arranged with the seventh gear (10), and an external mesh with the eighth gear (11) The ninth gear (12); the integer dial (3) is coaxially arranged with the ninth gear (12). 5. The point-line mileage measuring device according to claim 4, characterized in that, the center distance between the fourth gear (7) and the fifth gear (8), the sixth gear (9) and the seventh gear The center distance of the gear (10) and the center distance of the eighth gear (11) and the ninth gear (12) are both d. 6. The point-line mileage measuring device according to claim 5, wherein c=36mm, d=40mm. 7. The dot-line mileage measuring device according to claim 1, characterized in that, the measuring device also includes two side plates (13), and the decimal scale gear transmission group and the integer scale gear transmission group are clamped Between the two side plates (13), the axles used to install the gears in the two gear trains are set on the two side plates (13). 8. The point-line mileage measuring device according to claim 7, characterized in that, the side plate (13) is equipped with an operating handle (14) which is convenient to hold and push the measuring device to move. 9. The point-line mileage measuring device according to claim 7 or 8, characterized in that, a pier foot (15) is also fixed under the side plate (13), and the pier foot (15) and two active The wheels (1) jointly support the measuring device and keep it from falling down when no one supports it. 10. The point-line mileage measuring device according to claim 1, characterized in that, the axle used to install the driving wheel (1) is the first shaft (16), and the two driving wheels (1) are installed on the two side plates ( 13) outside, and fixed on the first shaft (16) with pins respectively.