CN217637183U

CN217637183U - Digital display type curve length measuring device used on map

Info

Publication number: CN217637183U
Application number: CN202221440508.XU
Authority: CN
Inventors: 巩平; 纪文宇; 张�杰; 黄海松; 陈天凯; 陆镛; 柴卓慧
Original assignee: Army Engineering University of PLA
Current assignee: Army Engineering University of PLA
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-10-21
Anticipated expiration: 2032-06-09

Abstract

The utility model discloses a digital display type curve length measuring device used on a map, which comprises a shell, wherein a digital display device is arranged on the shell and is electrically connected with a circular capacitive grid; the circular capacitive grid comprises a rotary capacitive grid and a fixed capacitive grid, and the fixed capacitive grid is fixedly connected with the shell; one side of the shell, which is close to the map, is connected with a roller, and the axial direction of the roller is parallel to the axial direction of the rotary capacitive grid; and a transmission belt is connected between the roller and the rotary capacitive grid. The utility model discloses measurement process is simple and convenient, and measuring result is accurate, and the person of facilitating the use directly acquires measuring length data, has increased measuring efficiency.

Description

Digital display type curve length measuring device used on map

Technical Field

The utility model relates to a map measuring instrument specifically is a digital display type curve length measuring device for on map.

Background

The curve is often required to be measured in the map reading, the field distance calculation and the formation of the fighting scheme, a mechanical compass is mainly adopted for measurement at present, the friction coefficient of a metal roller is small, the visual field is limited when the curve is attached, a more simple, convenient and accurate measuring tool is lacked, the dial reading on the compass is rough, data can be obtained only by an estimation reading method, the measurement time is long, and the error is large. Although professional mapping mechanisms also have some curve path measuring instruments at present, most of the professional mapping mechanisms are large in size, high in cost, inconvenient to carry and low in universality.

Through retrieval, a Chinese patent with publication number CN205642395U discloses a portable curve measuring device, which comprises a driving gear and a driven gear which are arranged in a shell and are mutually meshed, wherein the centers of the driving gear and the driven gear are respectively provided with a stud, a mark belt is wound on the stud, a mark belt notch is formed in the shell, a rolling wheel is arranged at the mark belt notch through a fixed rod, the mark belt wound on the driving gear moves to the driven gear through the rolling wheel, and a marker for drawing a movement track is attached to the surface of the mark belt; the shell is internally provided with a pressing sheet which is used for matching with a tooth groove of a driving gear or a driven gear, and the pressing sheet is connected with a counter which is used for measuring the frequency of vibration. The shell is provided with a measured data display screen, and the counter is connected with the measured data display screen through the singlechip.

The technical scheme has the following defects: the length of the marker band is limited, resulting in a limitation of its measurable length; in order to be suitable for the measurement of different precision, need use the gear of different tooth's socket, increased the cost of manufacture of equipment, and the use needs to change the gear, increased the use degree of difficulty. Therefore, there is a need for a digital curve length measuring device which is convenient to operate, easy to read and has high measuring accuracy.

Disclosure of Invention

For overcoming the deficiencies of the prior art, the utility model provides a digital display type curve length measuring device for on map for realize the quick accurate actual distance that curve length and curve on the measurement map correspond.

The utility model discloses a realize through following technical scheme:

a digital display type curve length measuring device for a map comprises a shell, wherein a digital display device is arranged on the shell and is electrically connected with a circular capacitive grid; the circular capacitive grid comprises a rotary capacitive grid and a fixed capacitive grid, and the fixed capacitive grid is fixedly connected with the shell; one side of the shell, which is close to the map, is connected with a roller, and the axial direction of the roller is parallel to the axial direction of the rotary capacitive grid; and a transmission belt is connected between the roller and the rotary capacitive grid.

In the technical scheme, the roller moves along the curve to be measured, the transmission belt rotates under the action of friction force, so that the rotating capacitive grid is driven to rotate, the rotating distance of the transmission belt is measured according to the rotation of the rotating capacitive grid, and the distance is the length of the curve; the distance measured by the circular capacitive grating is transmitted to a digital display device for display, and a user can read the length of the curve through the digital display device.

Further, the outer wall of the transmission belt is provided with an anti-slip coating. The anti-slip coating is arranged on one side (outer side) of the transmission belt contacting with the map, so that the transmission belt can be prevented from rotating due to too small friction force with the map in the using process, and errors can be generated in the measuring result.

Furthermore, the rotating capacitive grating is sleeved with a gear sleeve, the gear sleeve is connected with the idler wheel through a transmission belt, and the transmission belt is evenly provided with limiting holes matched with the gear blocks of the gear sleeve. The spacing hole of drive belt passes the tooth piece of gear sleeve, and when the drive belt rotated, it was rotatory to drive the gear sleeve to it is rotatory to drive rotatory appearance bars, and this kind of setting can avoid between drive belt and the rotatory appearance bars because of skidding and can't drive rotatory appearance bars rotatory.

Furthermore, the gear sleeves are two, the two gear sleeves are sleeved on the rotary capacitive grating, and a gap is formed between the two gear sleeves. Set up two gear cover that have the interval and make being connected of drive belt and gear cover more stable, and can avoid setting up spacing hole in the centre of drive belt, influence the roll of gyro wheel.

Furthermore, the digital display device comprises a display screen, a plurality of buttons are arranged around the display screen, and the buttons comprise switch buttons and zero-resetting buttons. The power supply can be turned off under the condition that the equipment is not used by setting the switch button, so that the power loss is reduced; the zeroing button avoids interaction between the two measurements.

Further, the plurality of buttons further comprise a scale selection button; the digital display device is characterized by further comprising a calculating unit, wherein the calculating unit is connected with the display screen and used for calculating an actual distance according to the scale and the distance on the graph and displaying the actual distance through the display screen. After the curve distance is measured on the map, the actual distance is calculated according to the scale, and the actual distance is displayed on the digital display device, so that a user can directly obtain the actual distance corresponding to the curve.

Furthermore, the digital display device also comprises a storage battery, and the storage battery is used for supplying power to the digital display device and the circular capacitive grid. The storage battery is adopted for supplying power, an external power supply is not needed, and the device is convenient to use.

Furthermore, a solar cell panel is arranged on the surface of the digital display device and electrically connected with the storage battery. The storage battery can be charged through the solar cell panel, and the cruising ability of the device in outdoor use is improved.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) The utility model provides a digital display type curve length measuring device used on a map, which moves along a curve to be measured through a roller, a transmission belt rotates under the action of friction force, thereby driving a rotary capacitive grid to rotate, the rotary capacitive grid measures the rotating distance of the transmission belt according to the rotation of the rotary capacitive grid, and the distance is the length of the curve; the distance measured by the circular capacitive grating is transmitted to a digital display device for display, and a user can read the length of the curve through the digital display device. The measuring process is simple and convenient, the measuring result is accurate, a user can conveniently and directly obtain the measured length data, and the measuring efficiency is improved.

(2) The utility model discloses be provided with the scale selection button, adopt the calculating unit to calculate the actual distance that the curve that awaits measuring corresponds fast, the person of facilitating the use obtains the actual distance that the curve corresponds fast, has promoted work efficiency.

(3) The utility model discloses be provided with solar cell panel, when the open air is used, give the battery power supply through solar cell panel, duration when hoisting device outdoor use.

Drawings

Fig. 1 is a top view of a measurement device according to an embodiment of the present invention;

fig. 2 is a side view of a rotating capacitive grid according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating a connection between a fixed capacitive grid and a digital display device according to an embodiment of the present invention;

fig. 4 is an elevation view of a nib and roller in accordance with an embodiment of the present invention;

fig. 5 is a schematic view of a digital display device according to an embodiment of the present invention;

fig. 6 is an expanded view of a drive belt according to an embodiment of the present invention.

In the figure: 1. an annular housing; 2. a digital display device; 201. a display screen; 202. a switch button; 203. a zero button; 204. a scale selection button; 3. a circular capacitive gate; 301. rotating the capacitance gate; 302. fixing the capacitance gate; 4. connecting blocks; 5. a triangular plate-shaped sharp mouth; 6. a roller; 7. a transmission belt; 701. a limiting hole; 8. a gear sleeve; 801. a tooth block; 9. a solar cell panel.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, the present embodiment provides a digital display type curve length measuring device for use on a map, which includes a housing, where the housing is an annular housing 1, a digital display device 2 is disposed on the annular housing 1, the digital display device 2 is electrically connected to a circular capacitive grating 3, and the circular capacitive grating 3 is disposed coaxially with the annular housing 1; the circular capacitive grid 3 comprises a rotary capacitive grid 301 and a fixed capacitive grid 302, the fixed capacitive grid 302 is fixedly connected with the annular shell 1 through a digital display device 2, and the circular capacitive grid comprises the following specific components: the fixed grid 302 is fixedly connected to the digital display device 2, and the digital display device 2 is fixedly connected to the housing (as shown in fig. 3).

As shown in fig. 5, the digital display device 2 includes a display screen 201, and a plurality of buttons are disposed around the display screen 201, and the plurality of buttons include a switch button 202 and a zero-resetting button 203.

Preferably, the plurality of buttons further include a scale selecting button 204, and the digital display device 2 further includes a calculating unit, which is a single chip microcomputer in this embodiment. The singlechip is used for calculating an actual distance according to the measured distance on the graph and the scale, and the calculation formula is as follows:

where L is the actual distance and s is the distance on the graph.

One side, close to the map, of the annular shell 1 is connected with a connecting block 4, one end, far away from the annular shell 1, of the connecting block 4 is connected with a triangular plate-shaped sharp mouth 5, one end, far away from the connecting block 4, of the triangular plate-shaped sharp mouth 5 is provided with a roller 6 (shown in fig. 4), and the axial direction of the roller 6 is parallel to the axial direction of the rotary capacitive grid 301, namely the rolling plane of the roller 6 and the rotating plane of the rotary capacitive grid 301 are on the same horizontal plane; a transmission belt 7 is connected between the roller 6 and the rotary capacitive grid 301, and the transmission belt 7 sequentially penetrates through the inside of the connecting block 4 and the inside of the annular shell 1; the inner wall of the transmission belt 7 is abutted against the axial side surface of the roller 6, and the inner wall of the transmission belt 7 is also abutted against the outer side wall of the rotary grid 301.

Preferably, the side of the belt 7 that contacts the map (the outer side) is provided with a non-slip coating. The anti-slip coating prevents the friction between the drive belt 7 and the map from being too small, when the friction is too small, the drive belt 7 may not be able to rotate while sliding along the curve, thereby affecting the measurement result.

Preferably, a gear sleeve 8 (as shown in fig. 2) is sleeved outside the rotary capacitive grid 301 of the circular capacitive grid 3, and a limit hole 701 (as shown in fig. 6) matched with the gear sleeve 8 is formed in the transmission belt 7. The limiting hole 701 penetrates through a gear block 801 on the gear sleeve 8, and when the transmission belt 7 rotates, the gear sleeve 8 is driven to rotate, and then the rotary capacitive grating 301 is driven to rotate.

Preferably, there are two gear sleeves 8, and the two gear sleeves 8 have the same shape and are both sleeved outside the rotating grid 301, and the side surfaces of the gear blocks 801 of the two gear sleeves 8 are opposite. A certain gap is formed between the two gear sleeves 8. Two rows of limiting holes 701 are uniformly (equidistantly) formed in the transmission belt 7, and each row of limiting holes 701 is matched with the teeth of one gear sleeve 8.

Preferably, the digital display device 2 further comprises a storage battery, and the storage battery is used for supplying power to the circular capacitive grid 3 and the digital display device 2.

Preferably, a solar cell panel 9 is arranged on the surface of the digital display device 2, the solar cell panel 9 is electrically connected with the storage battery, and the solar cell panel 9 is used for supplying power to the storage battery.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not depart from the essence of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A digital display type curve length measuring device used on a map is characterized by comprising a shell, wherein a digital display device is arranged on the shell and is electrically connected with a circular capacitive grating; the digital display device comprises a display screen, a plurality of buttons are arranged around the display screen, and the buttons comprise a switch button, a return-to-zero button and a scale selection button; the digital display device also comprises a calculation unit, the calculation unit is connected with the display screen, and the calculation unit is used for calculating an actual distance according to the scale and the distance on the graph and displaying the actual distance through the display screen; the computing unit is a single chip microcomputer; the circular capacitive grid comprises a rotary capacitive grid and a fixed capacitive grid, and the fixed capacitive grid is fixedly connected with the shell; one side of the shell, which is close to the map, is connected with a roller, and the axial direction of the roller is parallel to the axial direction of the rotary capacitive grid; and a transmission belt is connected between the roller and the rotary capacitive grid.

2. The digital display curve length measuring device for maps according to claim 1, wherein the outer wall of the transmission belt is provided with an anti-slip coating.

3. The digital display type curve length measuring device for the map as claimed in claim 1, wherein a gear sleeve is sleeved outside the rotary capacitive grating, the gear sleeve is connected with the roller through a transmission belt, and the transmission belt is uniformly provided with limit holes matched with the gear blocks of the gear sleeve.

4. The digital display curve length measuring device for the map as claimed in claim 3, wherein there are two gear sleeves, both gear sleeves are sleeved on the rotating grid, and a gap is formed between the two gear sleeves.

5. The digital display type curve length measuring device for the map as claimed in claim 1, wherein the digital display device further comprises a storage battery, and the storage battery is used for supplying power to the digital display device and the circular capacitive grid.

6. The digital display type curve length measuring device for the map as claimed in claim 5, wherein a solar panel is arranged on the surface of the digital display device, and the solar panel is electrically connected with the storage battery.