CN221198295U - Rotation body deflection angle measuring device - Google Patents

Abstract

The utility model provides a revolving body deflection angle measuring device which is used for solving the technical problems that the existing measuring device is low in measuring precision, cannot meet the forward and reverse measuring requirements, is large in size, and is high in processing and material cost. The measuring device comprises a shell for installing a to-be-measured revolving body, a revolving arm, a dial assembly, a pointer assembly, a supporting body and a base, wherein the revolving arm, the dial assembly, the pointer assembly and the supporting body are vertically connected to the overhanging end of the to-be-measured revolving body; the dial assembly comprises a main dial, a fixed plate and a mounting piece; the main dial is of an arc structure, and the circle center of the arc structure is positioned on an extension line of the central axis of the revolving body to be detected; the pointer assembly comprises a sub-dial and a transition piece; the auxiliary dial is in a fan-shaped structure and is positioned on the inner side of the main dial; the outer cambered surface of the auxiliary dial is arranged concentrically with the inner cambered surface of the main dial; n scale marks on the auxiliary scale disc divide the main scale disc into 1 degree, wherein N is more than or equal to 2; one end of the transition piece is connected with the auxiliary dial, and the other end of the transition piece is connected with the rotary arm.

Description

Rotation body deflection angle measuring device

Technical Field

The present disclosure relates to angle measuring devices, and particularly to a device for measuring a yaw angle of a rotor.

Background

In the machine-building trade, the measuring tool that is used often has slide caliper, spiral micrometer, amesdial, gauge, omnipotent angle chi etc. and above-mentioned measuring tool has promoted staff's work efficiency in the measurement process by a wide margin.

However, there are few measuring tools for the deflection angle, and in the conventional method, a large-diameter scale is used for rotation measurement if the deflection angle of a rotor, particularly the deflection angle of an eccentric rotor, is to be measured. The measuring device adopted by the measuring method is shown in figure 1, an elongated pointer is arranged on a large-diameter dial, the pointer grows along with the increase of the size of a measured piece, and during measurement, the pointer rotates along with an eccentric revolving body, and the final stop position of the pointer is the deflection angle. However, this measuring device has the following disadvantages:

(1) The scale and the pointer are limited by the external dimensions of the measured piece, the reading on the scale can be accurate to only 1 degree, and the measurement accuracy is low;

(2) The dial can not meet the requirements of forward and reverse measurement;

(3) When in measurement, a measurer needs naked eye visual measurement, but the minimum scale of the dial is 1 degree, the distance value of the scale mark is generally not more than 0.2mm, visual measurement is difficult, and deviation is easy to occur. For this purpose, the method currently in common use is to enlarge the diameter of the dial, thereby increasing the distance value of the graduation marks and further meeting the visibility requirement. However, the whole size of the dial is larger, the length of the pointer is increased along with the increase of the size of the dial, and the pointer is used as a part of an accurate index, and the material and processing precision requirements are higher, so that the processing cost and the material cost are increased in multiple.

Disclosure of utility model

The utility model aims to provide a revolving body deflection angle measuring device which is used for solving the technical problems that the existing measuring device is low in measuring precision, cannot meet the forward and reverse measuring requirements, is large in size, and is high in processing and material cost.

In order to solve the technical problems, the technical solution of the present utility model is as follows:

the utility model provides a rotation body deflection angle measuring device which characterized in that:

The rotary type rotary table comprises a shell for mounting a rotary body to be tested, a rotary arm, a dial assembly, a pointer assembly, a supporting body and a base, wherein the rotary arm, the dial assembly, the pointer assembly and the supporting body are vertically connected to the overhanging end of the rotary body to be tested;

the overhanging end is one end of the revolving body to be detected, which is arranged in the shell, extending out of the shell; the shell is arranged on the base;

the dial assembly comprises a main dial and a fixed plate;

The main dial is of an arc structure, and two ends of the main dial are respectively connected with two ends of the fixed plate; the fixed plate is arranged on the support body through the mounting piece, and the circle center of the circular arc structure is positioned on the extension line of the central axis of the revolving body to be detected;

The pointer assembly includes a sub-dial and a transition piece;

The auxiliary dial is of a fan-shaped structure and is positioned on one side of the main dial; the outer cambered surface of the auxiliary dial is arranged concentrically with the inner cambered surface of the main dial; n scale marks on the auxiliary scale disc divide the main scale disc into 1 degree, wherein N is more than or equal to 2; one end of the transition piece is connected with the auxiliary dial, and the other end of the transition piece is connected with the rotary arm.

Further, zero lines of the main dial and the auxiliary dial are respectively positioned in the middle of the scale surface where the main dial and the auxiliary dial are positioned and used for measuring the forward or reverse deflection angle of the revolving body to be measured.

Further, the fixing plate is provided with a mounting hole, and the axis of the mounting hole passes through the circle center of the circular arc structure; the mounting piece passes the mounting hole and installs the fixed plate on the supporter, and one side that the fixed plate was kept away from to the supporter is connected with the base.

Further, a circular arc baffle plate coaxial with the main dial is arranged on the fixed plate close to the mounting hole, and a first zero calibration line aligned with the zero line of the main dial is arranged on the circular arc baffle plate; the auxiliary dial is provided with a second zero line aligned with the zero line of the auxiliary dial.

Further, the pointer assembly further comprises a pointer;

the scale surface of the auxiliary dial is higher than the scale surface of the main dial, and the pointer is arranged on one side of the outer cambered surface of the auxiliary dial higher than the main dial and is positioned in the middle of the outer cambered surface.

Further, the mounting includes a screw, a washer, and a locknut; after the screws sequentially penetrate through the mounting holes, the washers and the supporting body of the fixing plate, the fixing plate is fixedly connected with the supporting body through the locknut, so that the stability of the installation of the main dial is improved.

Further, the screw is a butterfly screw, and is easy to install and detach.

Further, the auxiliary dial and the pointer are made of aluminum alloy, and the aluminum alloy is light in material density, high in strength, easy to process and low in cost.

Further, n=10.

Further, the base and the support body are of an integrated structure.

Compared with the prior art, the utility model has the following beneficial effects:

1. The utility model relates to a revolving body deflection angle measuring device which comprises a shell for installing a revolving body to be measured, a revolving arm vertically connected to the overhanging end of the revolving body to be measured, a dial assembly, a supporting body, a pointer assembly and a base, wherein the dial assembly comprises a main dial, a fixed plate and a mounting piece; the main dial is of an arc structure, and the auxiliary dial is of a fan-shaped structure and is positioned on one side of the main dial; the outer cambered surface of the auxiliary dial is arranged concentrically with the inner cambered surface of the main dial, and the N scale marks on the auxiliary dial divide equally by 1 degree on the main dial, so that the measuring precision is improved.

2. According to the revolving body deflection angle measuring device, zero lines of the main dial and the auxiliary dial are respectively positioned in the middle of the scale surface where the main dial and the auxiliary dial are positioned, and the auxiliary dial deflects forward or backward relative to the main dial under the drive of the revolving arm, so that the measurement of the forward or backward deflection angle of the revolving body to be measured is realized.

3. In the revolving body deflection angle measuring device, a circular arc baffle plate coaxial with a main dial is arranged on a fixed plate, and a first zero correction line aligned with a zero line of the main dial is arranged on the circular arc baffle plate; the auxiliary dial is provided with a second zero-correction line aligned with the zero-correction line, and the coaxiality of the installation of the measuring device can be ensured through the first zero-correction line and the second zero-correction line.

4. In the revolving body deflection angle measuring device, the auxiliary dial and the pointer are made of aluminum alloy, and the material has light density, high strength, easy processing and lower cost; simultaneously, the material is low in weight, and is easy to synchronously deflect along with the rotary arm of the to-be-measured piece, so that the measurement precision can be further improved.

Drawings

FIG. 1 is a schematic diagram of a conventional device for measuring yaw angle of a rotor;

FIG. 2 is a schematic diagram of a first embodiment of the present utility model;

FIG. 3 is a second schematic diagram of an embodiment of the present utility model;

fig. 4 is a state reference diagram of the dial at the time of zeroing in the embodiment of the utility model.

The reference numerals are as follows:

The test device comprises a 1-to-be-tested revolving body, a 2-shell, a 3-revolving arm, a 4-support body, a 5-main dial, a 6-fixing plate, 61-mounting holes, 62-arc-shaped baffles, 63-first zero calibration lines, 7-mounting pieces, 71-screws, 72-washers, 73-locknuts, 8-auxiliary dials, 81-second zero calibration lines, 9-transition pieces, 10-bases and 11-pointers.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 2 and 3, the present embodiment provides a device for measuring a yaw angle of a rotor, which includes a housing 2 for mounting a rotor 1 to be measured, a rotary arm 3 vertically connected to an overhanging end of the rotor 1 to be measured, a dial assembly, a pointer assembly, a supporting body 4, and a base 10 connected to the supporting body 4. The overhanging end is one end of the revolving body 1 to be tested, which is arranged in the shell 2, extending out of the shell 2; the housing 2 is mounted on a base 10.

The dial assembly comprises a main dial 5, a fixed plate 6 and a mounting piece 7; the pointer assembly comprises a sub-dial 8, a transition piece 9 and a pointer 11.

The main dial 5 is of an arc structure, two ends of the main dial 5 are respectively connected with two ends of the fixed plate 6, and the main dial 5 and the fixed plate 6 can be processed into an integrated structure according to actual processing conditions; the fixed plate 6 is arranged on the support body 4 through the mounting piece 7, and the circle center of the circular arc structure is positioned on the extension line of the central axis of the revolving body 1 to be tested. The fixing plate 6 is provided with a mounting hole 61, and the axis of the mounting hole 61 passes through the center of the arc structure, so that the fixing plate 6 and the side surface of the base 10 are required to be arranged in parallel in the mounting stage.

The mounting member 7 comprises a screw 71, a washer 72 and a locknut 73, wherein the screw 71 can be a butterfly screw, the mounting or dismounting of the screw is convenient to operate, and the screw can be correspondingly selected according to actual requirements. After the screws 71 pass through the mounting holes 61 of the fixing plate 6, the washers 72 and the supporting body 4 in sequence, the fixing plate 6 is connected with the supporting body 4 through the locknuts 73, so that the main dial 5 and the supporting body 4 are relatively fixed.

The auxiliary dial 8 has a fan-shaped structure, and is located on one side of the main dial 5, and the scale surface of the auxiliary dial 8 is higher than the scale surface of the main dial 5, and the auxiliary dial 8 is generally arranged on the inner side of the main dial 5, or the auxiliary dial 8 can be arranged on the outer side of the main dial 5 according to test requirements. The outer cambered surface of the auxiliary dial 8 is arranged concentrically with the inner cambered surface of the main dial 5. The pointer 11 is mounted on one side of the outer arc surface of the auxiliary dial 8 higher than the main dial 5 and is positioned in the middle of the outer arc surface. One end of the transition piece 9 is connected with the auxiliary dial 8 through a screw (according to actual processing conditions, the transition piece 9 and the auxiliary dial 8 can be processed into an integrated structure), and the other end of the transition piece is connected with the rotary arm 3, so that the auxiliary dial 8 and the pointer 11 are ensured to be coaxially arranged with the rotary body 1 to be tested, and the rotary body 1 to be tested is synchronously deflected under the driving of the rotary arm 3.

As shown in FIG. 4, N scale lines on the auxiliary scale disk 8 bisect 1 degree on the main scale disk 5, and N is equal to or greater than 2. The 1 degree on the main calibrated scale 5 is halved to 10 scale marks on the auxiliary calibrated scale 8 of this embodiment, namely minimum measurement accuracy can be 0.1 degree, compares current measurement structure, and the 1 degree on the main calibrated scale 5 can be halved to N scale marks on the auxiliary calibrated scale 8 of this embodiment to make the error of measurement reduce to minimum, improve measurement accuracy. If a higher accuracy measurement is required, only the number of graduation marks on the auxiliary dial 8 is correspondingly increased, and in the process, the length of the pointer 11 is not increased along with the increase of the main dial 5, but is widened along with the increase of the minimum accuracy of the measurement.

The auxiliary dial 8 and the pointer 11 are made of aluminum alloy, and the aluminum alloy has light density, high strength, easy processing and lower cost. In addition, a metal or nonmetal material satisfying the conditions of light density, high strength, easy processing and low cost may be selected, which is not limited in this embodiment.

In this embodiment, zero lines of the main dial 5 and the auxiliary dial 8 are respectively located in the middle of the scale surface where the zero lines are located, so as to realize measurement of the forward or reverse deflection angle of the revolving body 1 to be measured.

In order to improve the measurement accuracy of the measuring device, the base 10 and the supporting body 4 can be designed into an integrated structure, so that the coaxiality of the measuring device and the installation of the revolving body 1 to be measured is further ensured.

A circular arc baffle plate 62 coaxial with the main dial 5 is arranged on the fixed plate 6 near the mounting hole 61, and a first zero calibration line 63 aligned with the zero position line of the main dial 5 is arranged on the circular arc baffle plate 62; the sub-dial 8 is provided with a second zero line 81 aligned with its zero line. In the mounting stage, when verifying whether the mounting hole 61 and the screw 71 are coaxial with the revolution body 1 to be measured, the accuracy of the measurement result can be ensured by measuring whether the first zero line 63, the second zero line 81, the zero line on the sub-dial 8, and the zero line (i.e., four lines) on the main dial 5 are aligned.

In this embodiment, a method of using the rotation body deflection angle measurement device of the present utility model will be specifically described with reference to fig. 2 to 4.

First, the structure is assembled.

First, the rotor 1 to be measured is mounted inside the housing 2, and the housing 2 is fixed to the top of the base 10 such that the overhanging end of the rotor 1 to be measured is connected to the swivel arm 3. Secondly, the fixing plate 6 and the supporting body 4 are fixedly connected through the butterfly screw 71, the gasket 72 and the locknut 73, and after the fixing plate is fastened, the main dial 5 can rotate around the central shaft of the butterfly screw 71 under the action of external force, so that the dynamic zeroing adjustment of the main dial 5 is facilitated. Finally, one end of the transition piece 9 is connected with the rotary arm 3, and the other end is connected with the auxiliary dial 8, so that the auxiliary dial 8 is positioned inside the main dial 5, and the first zero line 63, the second zero line 81, the zero line on the auxiliary dial 8 and the zero line on the main dial 5 are all positioned on the same straight line, thereby completing the structural assembly of the test device.

And secondly, returning to zero for adjustment.

After the structural assembly is completed, the main dial 2 is zeroed. Firstly, the revolving body 1 to be tested is electrified to drive the revolving arm 3 to rotate, the revolving arm 3 further drives the auxiliary dial 8 and the pointer 11 to reach the zero position set by the system of the revolving body 1 to be tested, at the moment, the pointer 11 is deviated from the zero position line of the main dial 5, and the zero position line of the main dial 5 is required to be manually adjusted, so that the pointer is aligned with the zero position line of the main dial 5, and the purpose of manual correction and zero setting is achieved.

Third, the readings are determined.

The rotary body 1 to be tested is electrified and tested, the pointer 11 is stopped at a specific position, the deflection angle of the rotary body 1 to be tested can be obtained through reading, and the reading method is similar to that of a vernier caliper.

First, the integer is read:

and reading out the nearest score line value near the left or right of the pointer 11 on the scale surface of the main dial 5, wherein the value is the integer value of the deflection angle of the rotator 1 to be measured.

Second, the decimal is read:

Finding out the scale mark on the auxiliary scale disc 8 aligned with the scale mark on the scale surface of the main scale disc 5, and multiplying the product obtained by the measurement precision of the auxiliary scale disc 8 by the sequence number (from the zero position line), namely the decimal value of the deflection angle of the revolving body 1 to be measured.

Again, sum:

And adding the integer value of the first step and the decimal value of the second step, wherein the obtained numerical value is a specific measurement result of the deflection angle of the revolving body 1 to be measured.

Finally, comparing and judging:

After the test reading is finished, comparing the actual deflection angle with the theoretical deflection angle of the to-be-tested rotary body 1, wherein the difference value is the precision difference of the deflection angle of the to-be-tested rotary body 1, if a more accurate numerical value is required to be obtained, the average value can be calculated through multiple measurements, and if the precision difference meets the design requirement, the to-be-tested rotary body 1 is judged to be qualified, otherwise, the to-be-tested rotary body 1 is judged to be unqualified.

In the device for measuring the deflection angle of the revolving body 1 according to the present embodiment, the deflection angle of the revolving body 1 to be measured is measured by the relative deflection of the main scale 5 and the sub scale 8. The main scale disc 5 is of an arc structure, the auxiliary scale disc 8 is of a fan-shaped structure, and scale marks on the auxiliary scale disc 8 can subdivide scales on the main scale disc 5 so as to improve measurement accuracy. The fixed plate 6 is provided with a circular arc baffle 62 for calibrating zero lines of the main dial 5 and the auxiliary dial 8, thereby ensuring the coaxiality of the installation of the measuring device and avoiding the measurement deviation. The auxiliary dial 8 and the pointer 11 are made of aluminum alloy, and the aluminum alloy has light density, high strength, easy processing and lower cost; meanwhile, the material is low in weight, and is easy to synchronously deflect along with the rotary arm 3 of the to-be-measured piece, so that the measurement precision can be further improved. The rotary body deflection angle measuring device provided by the embodiment not only meets the requirements of small specification and size and high measurement precision, but also has the advantages of simple operation process, low manufacturing cost and low economic cost.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. The utility model provides a rotation body deflection angle measuring device which characterized in that:

The rotary body to be tested comprises a shell (2) for mounting the rotary body to be tested (1), a rotary arm (3) vertically connected to the overhanging end of the rotary body to be tested (1), a dial assembly, a pointer assembly, a supporting body (4) and a base (10) connected with the supporting body (4);

The overhanging end is one end of the revolving body (1) to be detected, which is arranged in the shell (2) and extends out of the shell (2); the shell (2) is arranged on the base (10);

the dial assembly comprises a main dial (5), a fixed plate (6) and a mounting piece (7);

The main dial (5) is of an arc structure, and two ends of the main dial are respectively connected with two ends of the fixed plate (6); the fixed plate (6) is arranged on the support body (4) through the mounting piece (7), and the circle center of the circular arc structure is positioned on the extension line of the central axis of the revolving body (1) to be tested;

The pointer assembly comprises a sub-dial (8) and a transition piece (9);

The auxiliary dial (8) is of a fan-shaped structure and is positioned on one side of the main dial (5); the outer cambered surface of the auxiliary dial (8) and the inner cambered surface of the main dial (5) are concentrically arranged; n scale marks on the auxiliary scale disc (8) divide the main scale disc (5) into 1 degree, wherein N is more than or equal to 2; one end of the transition piece (9) is connected with the auxiliary dial (8), and the other end is connected with the rotary arm (3).

2. The rotation body deflection angle measurement device according to claim 1, characterized in that:

Zero lines of the main dial (5) and the auxiliary dial (8) are respectively positioned in the middle of the scale surface where the zero lines are positioned and are used for measuring the forward or reverse deflection angle of the revolving body (1) to be measured.

3. The rotation body deflection angle measurement device according to claim 1 or 2, characterized in that:

the fixing plate (6) is provided with a mounting hole (61), and the axis of the mounting hole (61) passes through the center of the arc structure; the mounting piece (7) passes through the mounting hole (61) to mount the fixing plate (6) on the support body (4), and one side of the support body (4) far away from the fixing plate (6) is connected with the base (10).

4. The rotation body deflection angle measurement device according to claim 3, characterized in that:

A circular arc baffle (62) coaxial with the main dial (5) is arranged on the fixed plate (6) close to the mounting hole (61), and a first zero calibration line (63) aligned with the zero line of the main dial (5) is arranged on the circular arc baffle (62); the auxiliary dial (8) is provided with a second zero line (81) aligned with the zero line thereof.

5. The rotation body deflection angle measurement device according to claim 4, characterized in that:

The pointer assembly further comprises a pointer (11);

The scale surface of the auxiliary dial (8) is higher than the scale surface of the main dial (5), and the pointer (11) is arranged on one side of the outer cambered surface of the auxiliary dial (8) higher than the main dial (5) and is positioned in the middle of the outer cambered surface.

6. The rotation body deflection angle measurement device according to claim 5, characterized in that:

The mounting piece (7) comprises a screw (71), a washer (72) and a locknut (73); after the screws (71) sequentially penetrate through the mounting holes (61) of the fixing plate (6), the washers (72) and the supporting body (4), the fixing plate (6) is fixedly connected with the supporting body (4) through the locknuts (73).

7. The rotation body deflection angle measurement device according to claim 6, characterized in that:

The screw (71) is a butterfly screw.

8. The rotation body deflection angle measurement device according to claim 7, characterized in that:

The auxiliary dial (8) and the pointer (11) are made of aluminum alloy.

9. The rotation body deflection angle measurement device according to claim 8, characterized in that:

N＝10。

10. The rotation body deflection angle measurement device according to claim 2, characterized in that:

the base (10) and the supporting body (4) are of an integrated structure.