CN106468540B

CN106468540B - Distance measuring device

Info

Publication number: CN106468540B
Application number: CN201510512721.5A
Authority: CN
Inventors: 曾进民; 吴风云; 石昕; 邢星
Original assignee: Northwest Instrument Shanghai Co ltd; Northwest Instrument Inc
Current assignee: Northwest Instrument Shanghai Co ltd; Northwest Instrument Inc
Priority date: 2015-08-20
Filing date: 2015-08-20
Publication date: 2024-01-02
Anticipated expiration: 2035-08-20
Also published as: CN106468540A

Abstract

The invention provides a distance measuring device which comprises a push rod, a counter and a distance measuring wheel, wherein the distance measuring wheel comprises an inner wheel and an outer wheel, the push rod is fixed with the inner wheel, the counter is fixed on the push rod, the inner wheel can rotate around the outer wheel, the push rod is pushed during distance measurement, the counter is used for calculating the rotation distance of the outer wheel and counting and measuring the distance, the structure is simple, the distance measuring precision is high, and the shaftless design is realized by arranging the inner wheel and the outer wheel.

Description

Distance measuring device

Technical Field

The invention relates to distance measuring equipment with a distance measuring wheel, in particular to a distance measuring device.

Background

The variety of ranging devices is very abundant, wherein the ranging device with ranging wheels is widely applied in the fields of engineering, construction, survey and the like, the ranging device generally consists of a push rod, a counter and the ranging wheels, the counter is used for data storage and reading, the push rod is pushed during ranging, the counter measures the distance through the rotation count of the ranging wheels, the ranging wheels in the prior art are all of shaft designs, such as a ranging wheel disclosed in CN201436550, a rotating wheel set comprises a central shaft, the central shaft is connected with rollers on the rotating wheel set through a plurality of ribs, the central shaft on the rotating wheel set is connected with the push rod through a front fork, and the design stability is good.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the ranging device which is simple in structure, convenient and quick to assemble and disassemble, low in cost and high in precision.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a range unit, range unit includes push rod, counter and range finding wheel, the range finding wheel includes interior wheel and outer wheel, the outer wheel cover is established in the outside of interior wheel, interior wheel with the push rod is fixed, interior wheel for the outer wheel rotates, the counter is through right the rotation count of outer wheel calculates the range finding.

Preferably, at least one internal gear is fixed on the internal wheel, an external gear is formed on the inner side wall of the external wheel, and the internal gear is meshed with the external gear.

Preferably, four internal gears are fixed on the inner wheel.

Preferably, the distance measuring device further comprises a plurality of inner rolling pins, and the inner rolling pins are arranged between the inner wheel and the outer wheel.

Preferably, guide ribs are arranged on the inner side wall of the outer wheel.

Preferably, the inner wheel is of an L-shaped section, the outer wheel is of an inverted L-shaped section, the distance measuring wheel is formed by buckling the outer wheel and the inner wheel with each other, and the outer wheel and the inner wheel are fixed through fixing pins.

Preferably, the counter is fixed to the push rod.

Preferably, the counter is fixed to the inner wheel.

Preferably, the inner wheel and the outer wheel are both of annular structure.

The invention further provides a ranging device, which comprises a push rod, a counter and a ranging wheel, wherein the ranging wheel comprises an inner wheel and an outer wheel, the inner wheel and the outer wheel are of circular ring structures, the outer wheel is sleeved on the outer side of the inner wheel, the inner wheel is fixed with the push rod, at least one inner wheel is fixed on the inner wheel, an outer gear is formed on the inner side wall of the outer wheel, the inner wheel is meshed with the outer gear, the inner wheel rotates relative to the outer wheel, the inner wheel is of an L-shaped section, the outer wheel is of an inverted L-shaped section, the ranging wheel is formed by buckling the outer wheel and the inner wheel, and the counter calculates the ranging of the rotation count of the outer wheel.

The invention also provides a distance measuring device, which comprises a push rod, a counter and a distance measuring wheel, wherein the distance measuring wheel comprises an inner wheel and an outer wheel, the inner wheel and the outer wheel are of circular ring structures, the outer wheel is sleeved on the outer side of the inner wheel, the inner wheel is fixed with the push rod, the distance measuring device further comprises a plurality of inner rolling pins, the inner rolling pins are arranged between the inner wheel and the outer wheel, the inner wheel rotates relative to the outer wheel, guide ribs are arranged on the inner side wall of the outer wheel, the inner rolling pins rotate in the guide ribs, and the counter calculates the distance measuring by counting the rotation of the outer wheel

The ranging device adopts a shaftless ranging wheel structure, realizes rolling ranging through mutual rotation of the outer wheel and the inner wheel, has higher ranging precision, is convenient and quick to disassemble and assemble, has a simple structure, and saves cost.

Drawings

FIG. 1 is a schematic view of a first embodiment of a distance measuring device according to the present invention;

FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is a schematic view of a second embodiment of a ranging apparatus according to the present invention;

FIG. 4 is a sectional view taken in the direction B-B in FIG. 3;

FIG. 5 is a schematic view of a third embodiment of a ranging apparatus according to the present invention;

fig. 6 is a sectional view in the direction C-C of fig. 5.

Detailed Description

The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention.

Referring to fig. 1 and 2, the distance measuring device using the present invention includes a push rod 1, a counter 2 and a distance measuring wheel 3, the distance measuring wheel 3 includes an inner wheel 31 and an outer wheel 32, the push rod 1 is fixed with the inner wheel 31, the counter is fixed on the push rod 1 or the inner wheel 31, the inner wheel 31 can rotate around the outer wheel 32, the push rod 1 is pushed during distance measurement, the counter is used for calculating the rotation distance of the outer wheel, and counting distance measurement is performed.

Specifically, the inner wheel 31 has an L-shaped structure, as shown in fig. 2, the L-shaped bottom surface is an inner surface of the ranging wheel, namely, a first inner wheel surface 311, and the L-shaped other surface is a second inner wheel surface 312, as shown in fig. 1, the second inner wheel surface is one side surface of the ranging wheel, threaded holes 313 are formed in the first inner wheel surface 311, and four inner gears 314 are fixedly and uniformly arranged on the second inner wheel surface at intervals.

As shown in fig. 2, the outer wheel 32 has an inverted L-shaped cross section, and includes a first outer wheel surface 321 and a second outer wheel surface 322, the outer wheel 32 and the inner wheel 31 form a ranging wheel with a cross section similar to a rectangle after being buckled, the first outer wheel surface 321 is an outer surface of the ranging wheel, and the second outer wheel surface 322 is another side surface of the ranging wheel (fig. 1 shows a view excluding the second outer wheel surface 322, and fig. 2 shows a view excluding the second outer wheel surface 322); an outer gear 323 is arranged in the circumferential direction of the inner side of the first outer gear surface 321, and after the outer gear 32 is buckled with the inner gear 31, the outer gear 323 is meshed with the four inner gears; the second outer wheel face 322 is also formed with a guide rib 4 on the inner side, a guide groove is formed in the guide rib, the gear shafts of the four inner gears 314 are arranged in the guide groove, so that the outer wheel can play a guide role when rotating, and meanwhile, a buffer hole is formed in the reinforcing rib.

As shown in fig. 2, after the outer wheel and the inner wheel are engaged, a fixing pin 5 is further provided in the screw hole 313, and the fixing pin 5 and the outer wheel form a certain gap.

After the outer gear 323 on the outer gear is meshed with the inner gear 314 on the inner gear after the outer gear is mounted, the inner gear 31 of the distance measuring wheel transmits thrust to the outer gear 323 through the inner gear 314 under the action of the thrust, the outer gear 32 is rubbed by the ground under the action of the thrust to generate rotary motion, the counter 2 records the rotary motion distance of the outer gear 32 at any time, performs plus-minus calculation under the square, and records and displays the actually needed measuring distance.

Alternatively, the number of the internal gears in the present embodiment may be variable, such as 3 or 6, etc., and the number of the fixing pins 5 may be set according to actual needs.

The invention has simple structure, realizes shaftless design by the rotation design of the inner wheel and the outer wheel, has better sealing effect by the L-shaped buckling design of the inner wheel and the outer wheel, prevents dust pollution, and has high ranging precision, low cost, light weight and convenient carrying.

Fig. 3 and 4 show a second embodiment of the invention, which differs only in that the inner wheel and the outer wheel are not rotated by means of a gear wheel, but that an inner needle 6 is arranged between the inner wheel and the outer wheel, the inner needle 6 moving in a guide groove formed by the guide rib 4 of the second outer wheel face 322, effecting a relative movement of the outer wheel and the inner wheel. In this embodiment, the inner wheel 31 of the distance measuring wheel transmits the thrust to the outer wheel 32 through the inner roller 6 under the action of the thrust, so that the outer wheel 32 is rubbed by the ground under the action of the thrust to generate rotary motion, the counter 4 records the rotary motion distance of the outer distance measuring wheel at any time, performs plus-minus calculation under the square, and records and displays the actually required measurement distance.

Fig. 5 and 6 show an alternative third embodiment of the present invention, which is different from the above two embodiments in that a gear or an inner roller is not required to be disposed in a cavity formed by buckling the outer wheel and the inner wheel, the inner wheel 31 of the ranging wheel directly transmits the thrust to the outer wheel 32 through the fixing pin 5 under the action of the thrust, so that the outer wheel 32 is rubbed by the ground under the action of the thrust to generate a rotation motion, the counter 4 records the rotation motion distance of the outer ranging wheel at any time, performs plus-minus calculation under the square, and records and displays the actually required measurement distance.

The foregoing examples merely illustrate specific embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The distance measuring device comprises a push rod, a counter and a distance measuring wheel, and is characterized in that the distance measuring wheel comprises an inner wheel and an outer wheel, the inner wheel is of an L-shaped section, the outer wheel is of an inverted L-shaped section, and the distance measuring wheel is formed by buckling the outer wheel and the inner wheel with each other; the outer wheel is sleeved on the outer side of the inner wheel, the inner wheel is fixed with the push rod, the inner wheel rotates relative to the outer wheel, and the counter calculates and measures the distance by counting the rotation of the outer wheel.

2. The ranging device as recited in claim 1 wherein the outer wheel and the inner wheel are secured by a securing pin.

3. The distance measuring device according to claim 1, wherein at least one internal gear is fixed to the internal gear, and an external gear is formed on an inner side wall of the external gear, and the internal gear is meshed with the external gear.

4. A distance measuring apparatus according to claim 3, wherein the inner side wall of the outer wheel is provided with guide ribs, and the gear shaft of the inner gear is provided in the guide ribs.

5. A range finder device as claimed in claim 3, wherein four internal gears are fixed to the inner wheel.

6. The distance measuring device according to claim 1, further comprising a plurality of inner roller pins disposed between the inner wheel and the outer wheel.

7. The distance measuring device according to claim 6, wherein guide ribs are provided on an inner side wall of the outer wheel, and the inner roller pin rotates in the guide ribs.

8. The ranging apparatus as recited in claim 1 wherein the counter is secured to the pushrod.

9. A range finder device as claimed in claim 1, wherein the counter is fixed to the inner wheel.

10. The ranging device as recited in claim 1 wherein the inner wheel and the outer wheel are each of a circular configuration.