CN2096733U

CN2096733U - Liquid particle surveying instrument

Info

Publication number: CN2096733U
Application number: CN 91213744
Authority: CN
Inventors: 徐海; 哉玉毅
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-05-16
Filing date: 1991-05-16
Publication date: 1992-02-19

Abstract

The utility model relates to a liquid surveying instrument which belongs to the technical field of a length accurate surveying instrument. The surveying precision of the utility model can reach above 10+[-3] millimeters. The utility model has the design scheme that according to the incompressible nature of liquid, two containers of which the inner parts are communicated are used, and thickness of the section area S and S2 of the containers are different. The containers are filled with appropriate amounts of color liquid; a piston which can travel in an axial direction is arranged in the thick container with the section area of S; one end of the piston is connected with a surveying rod, and the piston is driven to move by the surveying rod; part liquid with volume of V in the thick container is moved to the thin container. Because S1 is larger than S, h2 is larger than h1 for showing that the length of an object to be surveyed is enlarged. Therefore, the utility model has higher surveying precision and can be used for production, education, scientific research, etc.

Description

Liquid particle surveying instrument

The utility model belongs to length precision measurement utensil technical field, is used to measure the length of small items.Measure the length of small items at present both at home and abroad, measuring appliance commonly used has vernier caliper, micrometer caliper etc.The measuring accuracy of vernier caliper, micrometer caliper generally can only reach 10 ^-2Millimeter can not satisfy the needs of precision measurement.

The purpose of this utility model provides a kind of measuring accuracy height, micrometer utensil easy to use, and its precision can reach 10 ^-3More than the millimeter.

Solution of the present utility model is: according to the incompressible character of liquid, with two sectional area S ₁And S ₂Thickness does not wait the inner container that communicates, and is marked with an amount of colored liquid in the container.Sectional area is S ₁Thick container in an axially displaceable piston is arranged, an end of piston links to each other with a sounding rod.Be connected on the support with sounding rod be relatively fixed the end on stacking several definite value gauge blocks.Sounding rod drives piston and moves, and can be S with sectional area ₁Thick appearance in volume be that to move to sectional area be S for the partially liq of V ₂Thin appearance in.Because S ₁＞＞S ₂, h is then arranged ₂＞＞h ₁, (h ₁h ₂The expression volume is the partially liq height of fluid column in thick and thin two containers respectively of V).

And h ₁The length of distance=object being measured that=piston moves.

h ₂＞＞h ₁, illustrated that the length of object being measured has been exaggerated.If structural design of the present utility model is S ₁Be S ₂1000 times, h is then arranged ₂Be h ₁1000 times, with its length of measuring small items, then measuring accuracy can improve 1000 times.

Accompanying drawing has been described an embodiment of the present utility model.

Two sectional area S ₁And S ₂Thickness does not wait inner container (5) and (2) that communicate, and the sectional area of thick container (5) is the 4000-6000 square millimeter, and the sectional area of thin container (2) is the 0.8-1.2 square millimeter.Be marked with in the container volume be not more than the red of thin vessel volume and with the nonwettable liquid of container (4).Sectional area is S ₂Small container (2) make by water white glass material.

Turn piston adjusting knob (7) can make long 30-40 millimeter, and the end face of the cylindrical sounding rod (8) of diameter 8-10 millimeter touches mutually with the plane of definite value gauge block (10).The 2-5 piece definite value gauge block of different numerical value is stacking and is being positioned on the support and the corresponding stiff end of sounding rod.

Turn scale zeroing knob (1) can make the initial liquid level of liquid in the zero graduation line of scale (3) of band scale and the small container align.Scale (3) high scale is pressed h ₂: h ₁The ratio of=5000:1 is demarcated.

If the length of object being measured (9) then suitably reduces the definite value gauge block greater than the maximum scale value of scale (3), can make then weight range of the present utility model become the 0-5.00 millimeter by the 0-0.500 millimeter.

The utility model should be measured in 20 ± 2 ℃ room temperature environment.

The utility model can be used for aspects such as production, education, scientific research.

Claims

1, a kind of liquid dial gauge is characterized in that: two sectional area thicknesses do not wait the inner container that communicates, be marked with colored liquid in the container, have one to link to each other with sounding rod and axially displaceable piston in the container of heavy in section, and the opposite of sounding rod has a stiff end to link to each other with support, and small bore container one side is provided with the scale of band scale again.

2, it is characterized in that according to claims 1 described liquid dial gauge: it is 1000:1 to 10000:1 that two thicknesses do not wait the ratio of the sectional area of the inner container that communicates.

3, it is characterized in that according to claims 1 described liquid dial gauge: the small bore container is made by colourless transparent material.

4, it is characterized in that according to claims 1 described liquid dial gauge: with stacking 2-5 piece definite value gauge block on the stiff end that support links to each other.

5, it is characterized in that according to claims 1 described liquid dial gauge: the scale of band scale and the relative position of small bore container are adjustable.