CN207379479U - Inside and outside calipers - Google Patents

Abstract

The utility model is related to a kind of inside and outside calipers, belong to pipeline, the internal-and external diameter of cylindrical member measures detection operation engineering device technique field.The utility model includes shell, shell one end is fixed with left leg, the other end is fixed with right leg, measurement leg is provided on central axes between left leg and right leg, measurement leg is equipped with stretching structure and diameter parameters measuring device, left leg is 2, right leg is 2,4 legs form distributed rectangular, and the fulcrum of left leg, the fulcrum of right leg are generally aligned in the same plane, and measurement leg is arranged at the center of distributed rectangular line.The utility model is branched leg structure, can form stable devices support structures, can ensure to measure the cross section of leg using fixing leg contact and measurement workpiece is axially vertical, and then ensure measurement accuracy.In addition, the utility model in a manner that electronic surveying is shown, can be more convenient intuitively to obtain diameter parameters.

Description

Inside and outside calipers

Technical field

The utility model is related to a kind of inside and outside calipers, belong to pipeline, the internal-and external diameter measurement detection of cylindrical member is made Industry engineering device technique field.

Background technology

To the measurement and detection through size inside and outside pipeline, cylindrical member, be equipment production with it is common in engineering practice Operation.The survey tool of many various forms and different accuracy grade, such as ruler, outer diameter thousand are given in existing survey tool Divide ruler, inside micrometer etc..But existing instrument is each defective in terms of range, precision and simplicity of operation, in order to improve measurement Comprehensive performance of the instrument in terms of range, precision and simplicity of operation need to propose new internal-and external diameter survey tool designing scheme.

At present, many technical solutions have been formd for internal-and external diameter measurement detection, wherein the ratio being close with the present invention More representational technical solution has：

Cable diameter gauge and internal-and external diameter measuring method (patent of invention 201610660161.2) inside and outside a kind of pipe, it is open a kind of Cable diameter gauge inside and outside pipe, including three idler wheels, two measuring arms and angular displacement sensor, two measuring arms are rotatably connected, And junction sets one of idler wheel, idler wheel is fixed on by wheel shaft in measuring arm, and can be rolled, the wheel shaft of two measuring arms Spacing between hole is equal.

A kind of inside and outside diameter measuring tool of large-scale workpiece (patent of invention 200810122158.0), discloses a kind of the interior of large-scale workpiece Measuring tool for outer diameter including ruler frame and borded pile and can be equipped with hard alloy wedge angle in the scale line on borded pile, ruler frame both ends, Equipped with borded pile on the central axes of ruler frame, the flexible post head of borded pile is equipped with the hard alloy of taper, is engraved in borded pile Combined type scale line reading on column sleeve and borded pile is these three point places of two wedge angles and telescopic mast head tip of ruler frame Corresponding diameter of a circle parameter.

Existing instrument is each defective in terms of range, precision and simplicity of operation.Cable diameter gauge and interior inside and outside a kind of pipe In use, range is limited, inconvenient for use for the scheme that outside diameter measuring method (patent of invention 201610660161.2) is announced. The scheme that a kind of inside and outside diameter measuring tool of large-scale workpiece (patent of invention 200810122158.0) is announced is in use, it is difficult to ensure that two Plane and measurement workpiece where a wedge angle and telescopic mast head tip is axially vertical, influences measurement accuracy；And in implementing, behaviour Make the size of personnel when stablizing ruler frame and borded pile firmly also directly to have an impact measurement result.

Utility model content

Technical problem to be solved in the utility model is：It provides a kind of using simple, the high internal-and external diameter measurement of accuracy Device.

Technical solution is used by the utility model to solve above-mentioned technical problem：Inside and outside calipers, including outer Shell, shell one end is fixed with left leg, the other end is fixed with right leg, is set on the central axes between left leg and right leg Measurement leg is equipped with, measurement leg is equipped with stretching structure and diameter parameters measuring device, and left leg or right leg are linear Multiple or left legs, the right leg set is linearly to set multiple, the fulcrum of left leg, the fulcrum position of right leg In same plane.

It is further:Left leg is 2, right leg is 2, and 4 legs form distributed rectangular.

It is further:Leg is measured to be arranged at the center of distributed rectangular line.

It is further:Measurement leg is equipped with the displacement sensor for measuring its stroke, displacement sensor electrical connection In conversion processor, the output terminal electrical connection of conversion processor has display screen.

It is further:Power supply is provided in shell, power supply is electrically connected with conversion processor, display screen.

It is further:The stretching structure for measuring leg is sliding matching structure.

The beneficial effects of the utility model are：The utility model is branched leg structure, can form stable device support knot Structure can ensure to measure the cross section of leg using fixing leg contact and measurement workpiece is axially vertical, and then ensure that measurement is accurate True property.The utility model can be more convenient intuitively to obtain diameter parameters in a manner that electronic surveying is shown.

Description of the drawings

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the leg distribution schematic diagram of the utility model；

It is marked in figure：1- shells, 2- power supplys, 3- display screens, 4- conversion processors, 5- measurements leg, the left legs of 6-, 7- are right Leg.

Specific embodiment

For ease of understanding with implementation the utility model, the preferred embodiment combination attached drawing work of anthology utility model is furtherly It is bright.

As shown in Figure 1 and Figure 2, the utility model includes shell 1, and 1 one end of shell is fixed with left leg 6, the other end is fixed Equipped with right leg 7, measurement leg 5 is provided on the central axes between left leg 6 and right leg 7, measurement leg 5 is equipped with flexible Structure and diameter parameters measuring device, left leg 6 or right leg 7 are multiple or left legs 6, the right leg 7 linearly set It is linearly to set multiple, fulcrum, the fulcrum of right leg 7 of left leg 6 are generally aligned in the same plane.

Internal-and external diameter measuring principle：During measurement, which is placed in be measured on (outer) footpath surface, makes 4 fixations Leg is contacted with interior (outer) footpath surface, and measurement leg 5 compresses.The position of fixed pivot is fixed it is known that measuring the flexible of leg 5 After amount obtains, the principle for determining a circle according to 3 points can obtain the diameter dimension of corresponding circumference.As shown in Figure 1, when measurement branch When 5 decrement of foot is h1,3 points of a1, b, c determines the circumference that radius is R1；When it is h2 to measure 5 decrement of leg, a2, b, c tri- The circumference that the definite radius of point is R2.

The utility model is branched leg structure, can form stable devices support structures, can be with using fixing leg contact Ensure that cross section and the measurement workpiece of measurement leg are axially vertical, and then ensure measurement accuracy.

To cause simple in structure and stablizing, fixing leg preferred arrangement is：Left leg 6 is 2, right leg 7 is 2 A, 4 legs form distributed rectangular.Measurement leg 5 is preferably disposed at the center of distributed rectangular line.

Diameter parameters measuring device may be employed various mechanical linkages of the prior art, in the utility model preferably The mode that electronic surveying is shown, measurement leg 5 are equipped with the displacement sensor for measuring its stroke, displacement sensor electrical connection In conversion processor 4, the output terminal electrical connection of conversion processor 4 has display screen 3.The prior art can be used in conversion processor 4 In various microprocessors, such as microcontroller.Conversion processor 4 will measure the calculating of 5 stroke of leg and be converted into measurement (outer) The digital quantity of footpath size is shown by modes such as data cable or numbers on display screen 3.Conversion processor 4 is mounted on outer The inside of shell 1, display screen 3 are mounted on shell 1 convenient for observed reading the upper surface of or side.The utility model passes through electronic surveying The mode of display can be more convenient intuitively to obtain diameter parameters.

For convenience of use, the utility model carries built-in power, is provided with power supply 2 in shell 1, power supply 2 at conversion Reason device 4, display screen 3 are electrically connected, and electric energy is provided for conversion processor 4, display screen 3.

The modes such as thread fitting may be employed, is slidably matched in the stretching structure of measurement leg 5, is preferably adopted in the utility model With sliding matching structure, such as sleeve type structure, can ensure to measure leg since the fixing leg of the utility model contacts Cross section and measurement workpiece are axially vertical, fixing leg uniform stressed during measurement, can use device self gravitation compression measurement branch Foot, avoid measurement process because survey crew exert oneself it is of different sizes caused by measurement result difference.

Claims (6)

1. calipers inside and outside, including shell (1), shell (1) one end is fixed with left leg (6), the other end is fixed with Right leg (7), measurement leg (5) is provided on the central axes between left leg (6) and right leg (7), and measurement leg (5) is arranged There are stretching structure and diameter parameters measuring device, it is characterised in that：Left leg (6) or right leg (7) are more linearly to set A or left leg (6), right leg (7) are linearly to set multiple, the fulcrum of left leg (6), the branch of right leg (7) Point is generally aligned in the same plane.

2. inside and outside calipers as described in claim 1, it is characterised in that:Left leg (6) is 2, right leg (7) is 2 A, 4 legs form distributed rectangular.

3. inside and outside calipers as claimed in claim 2, it is characterised in that:It measures leg (5) and is arranged on distributed rectangular line At center.

4. the inside and outside calipers as described in any one in claims 1 to 3, it is characterised in that:Leg (5) is measured to be arranged There is the displacement sensor for measuring its stroke, displacement sensor is electrically connected in conversion processor (4), conversion processor (4) Output terminal electrical connection has display screen (3).

5. inside and outside calipers as claimed in claim 4, it is characterised in that:Power supply (2), power supply are provided in shell (1) (2) it is electrically connected with conversion processor (4), display screen (3).

6. the inside and outside calipers as described in any one in claims 1 to 3, it is characterised in that:Measurement leg (5) is stretched Shrinking structure is sliding matching structure.