Positioning device for angle sensor

Abstract

The utility model is suitable for the field of measuring equipment, and provides a positioning device for an angle sensor, which comprises a first positioning hole arranged at the end part of a shaft to be measured and a shaft end baffle arranged at the end part of the shaft to be measured and provided with a second positioning hole at the center, positioning pieces are mounted in the first positioning hole and the second positioning hole so as to coaxially position the first positioning hole and the second positioning hole; after the positioning piece is installed, the shaft end baffle is in a rotatable state; the shaft end baffle is eccentrically provided with a counterweight piece for driving the shaft end baffle to rotate so as to adjust the gravity center of the shaft end baffle; after the gravity center is adjusted, the shaft end baffle is fixedly installed on the end portion of the shaft to be measured through the fixing structure, so that the shaft end baffle and the end portion of the shaft to be measured can be positioned through the positioning piece, meanwhile, the gravity center of the shaft end baffle is adjusted through the balance weight piece to achieve sag positioning, and the shaft end baffle is connected with a sensor in the positioning state. And precision zero setting is realized.

Description

Technical Field

[0001] The utility model relates to the field of measuring equipment, in particular to a positioning device for an angle sensor. Background Art

[0002] Angle sensors are used to measure precision detection components related to angles. In most cases, they are used to detect the rotation angle of shaft components.

[0003] Among them, during the installation and use of the angle sensor, it is necessary to ensure that its input end is coaxially positioned with the shaft component to ensure the accuracy of the detected value; however, due to the inevitable positioning deviation in the actual assembly process, most of the existing angle sensor installation methods are direct assembly methods, that is, the input end of the angle sensor is fixedly connected to the end of the shaft component, and the existence of positioning deviation will lead to increased wear between the rotating pairs and even damage to the angle sensor.

[0004] In response to the above problems, our company provides a transmission device for an angle sensor, which, through the cooperation between the active space 13 set on the dial and the rotating part 11, can provide the rotating part 11 with compensation space while ensuring the rotation transmission, so as to eliminate the force transmission caused by positioning deviation.

[0005] However, since the rotation of the dial determines the value recorded by the angle sensor, how to ensure the accurate zeroing of the angle sensor and the positioning of the device during assembly are difficult to overcome.

[0006] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0007] In view of the above-mentioned defects, the purpose of the utility model is to provide a positioning device for an angle sensor, which can realize the positioning of the shaft end baffle and the end of the shaft to be measured through a positioning piece, and further utilize a counterweight to adjust the center of gravity of the shaft end baffle to achieve vertical positioning, and connect it to the sensor in this positioning state to achieve precision zeroing.

[0008] In order to achieve the above-mentioned purpose, the utility model provides a positioning device for an angle sensor, comprising a first positioning hole arranged at the end of a shaft to be measured and a shaft end baffle plate placed at the end of the shaft to be measured and having a second positioning hole arranged at the center; positioning parts are installed in the first positioning hole and the second positioning hole to coaxially position the two; after the positioning parts are installed, the shaft end baffle plate is in a rotatable state; the shaft end baffle plate is eccentrically provided with a counterweight part for driving the shaft end baffle plate to rotate so as to adjust its center of gravity; after the center of gravity is adjusted, the shaft end baffle plate is fixedly installed with the end of the shaft to be measured through a fixing structure.

[0009] According to the positioning device for the angle sensor of the utility model, the positioning member is a pin structure; during positioning, one end of the pin is installed on the sensor bracket, and the other end is inserted into the first positioning hole and the second positioning hole.

[0010] According to the positioning device for the angle sensor of the utility model, after the positioning member is installed, it is clearance-matched with the shaft end baffle.

[0011] According to the positioning device for an angle sensor of the utility model, the counterweight is a shifting shaft.

[0012] According to the positioning device for the angle sensor of the utility model, the fixing structure includes a mounting hole arranged at the end of the shaft end baffle and a fixing member passing through the mounting hole and fixed to the end of the shaft to be measured.

[0013] According to the positioning device for an angle sensor of the utility model, the mounting hole is a strip-shaped hole extending in an arc shape.

[0014] The utility model provides a positioning device for an angle sensor, including a first positioning hole arranged at the end of the shaft to be measured and an end baffle plate placed at the end of the shaft to be measured and having a second positioning hole arranged at the center; positioning parts are installed in the first positioning hole and the second positioning hole to coaxially position the two; after the positioning parts are installed, the end baffle plate is in a rotatable state; the end baffle plate is eccentrically provided with a counterweight part for driving the end baffle plate to rotate so as to adjust its center of gravity; after the center of gravity is adjusted, the end baffle plate is fixedly installed with the end of the shaft to be measured through a fixed structure. The utility model can realize the positioning of the end baffle plate and the end of the shaft to be measured through the positioning part, and further realize vertical positioning by adjusting the center of gravity of the end baffle plate using the counterweight part, and connect with the sensor in this positioning state to realize precision zeroing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the angle sensor transmission device;

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure;

[0017] Figure 3 yes Figure 2 A magnified view of part A;

[0018] Figure 4 This is the positioning diagram when the shaft end baffle is installed;

[0019] Figure 5 yes Figure 3 Structural diagram after removing the sensor, matching parts and fixing parts and installing the positioning parts;

[0020] Figure 6 yes Figure 5A cross-sectional view of the middle C portion;

[0021] Figure 7 It is the matching diagram between the positioning piece and the positioning plate;

[0022] In the figure, 00-main bracket, 1-axis to be measured, 10-first positioning hole, 11-rotating part, 12-matching part, 13-activity space, 2-sensor, 3-axis end baffle, 31-second positioning hole, 32-mounting hole, 4-fixing part, 5-sensor bracket, 6-positioning part, 7-positioning plate, 71-third positioning hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] See also Figure 1 , Figure 2 and Figure 3 The utility model provides a transmission device for an angle sensor, which includes a shaft to be measured 1 and a sensor 2 located at one side end thereof; the shaft to be measured 1 is a swing arm shaft in this embodiment and is installed on a main bracket 00, and the sensor 2 is connected to the main bracket 00 through a sensor bracket 5 (the sensor 2 is an angle sensor and is fixed to the sensor bracket 5 by bolts).

[0025] A rotating member 11 is eccentrically disposed at the end of the shaft 1 to be tested. Specifically in this example, the rotating member 11 is a shift shaft (a cylindrical shaft-shaped component). Specifically, a shaft end baffle 3 is coaxially fixed to the end of the shaft 1 to be tested.

[0026] See also Figure 4 and Figure 5 During the installation process, the shaft end baffle plate 3 needs to be positioned, and the positioning work is performed based on the positioning structure, which includes a first positioning hole 10 set at the end of the shaft 1 to be measured; a second positioning hole 31 ( Figure 6 As shown); a positioning member 6 is installed in the first positioning hole 10 and the second positioning hole 31 to coaxially position the two, and the positioning member 6 can be a pin structure; through the cooperation of the positioning member 6 with the first positioning hole 10 and the second positioning hole 31, the axial positioning of the shaft 1 to be measured and the shaft end baffle 3 is achieved.

[0027] After the positioning member 6 is installed, one end thereof is in a clearance fit or transition fit (preferably a clearance fit) with the shaft end baffle 3, that is, under this connection, the shaft end baffle 3 is in a rotatable state; one end is installed on the sensor bracket 5 (corresponding to the mounting hole at the output end of the sensor 2). Specifically, in order to further ensure the concentricity between the sensor bracket 5 and the shaft to be measured (swing arm shaft), a positioning plate 7 is fixedly installed on the sensor bracket 5 by screws, and the positioning plate 7 has a third positioning hole 71 concentric with the second positioning hole 31. The positioning member 6 passes through the third positioning hole 71 when installed (at this time, the positioning plate 7 can be kept concentric with the swing arm shaft through the positioning member 6). At the same time, the sensor 2 is fixedly installed on the positioning plate 7, and after installation, the stop (output end) of the sensor 2 is concentric with the third positioning hole 71.

[0028] The shaft end baffle 3 is eccentrically provided with a counterweight that drives the shaft end baffle 3 to rotate so as to adjust its center of gravity. Specifically in this embodiment, the counterweight is the above-mentioned rotating member 11 (or the shifting shaft); when the shaft end baffle 3 is in a rotatable state, its center of gravity is close to one side of the rotating member 11 (or the shifting shaft). After the center of gravity is adjusted (the shaft end baffle 3 rotates at a predetermined angle), the rotating member 11 (or the shifting shaft) will be located at the lowest end of the shaft end baffle 3 (to achieve vertical correction, the effect of which will be described in detail below). After the shaft end baffle 3 is positioned, the shaft end baffle 3 is fixedly installed with the end of the shaft 1 to be measured through a fixing structure, and finally the positioning member 6 is removed. Specifically, the fixing structure includes a mounting hole 32 provided at the end of the shaft end baffle 3 and a fixing member 4 passing through the mounting hole 32 and fixed to the end of the shaft 1 to be measured. The fixing member 4 can be fastened with a fastening bolt; the rotating member 11 is eccentrically installed on the shaft end baffle 3.

[0029] The output end of the sensor 2 is provided with a matching piece 12, which is a shift plate with a predetermined angle to the axis of the output end of the sensor 2. The matching piece 12 is provided with an activity space 13 for the output end of the sensor 2 to move radially; the rotating piece 11 extends into the activity space 13. The above structure changes the connection between the sensor 2 and the shaft 1 to be measured from the traditional "rigid connection" to a "flexible connection". When the axis of the output shaft of the sensor 2 and the axis of the shaft 1 to be measured cannot correspond (for example, the two are parallel and non-corresponding), the activity space 13 of the shift plate and the pin of the shift shaft will rotate and slide slightly; even if there is a certain angle mismatch or the axis is not centered, the activity space 13 between the groove of the shift plate and the pin of the shift shaft is allowed to have a certain offset. Specifically, in this embodiment, in order to maintain the stability of the transmission between the shift plate and the shift shaft and avoid the consumption of excess external force, the matching piece 12 is arranged perpendicular to the axis of the output end of the sensor 2.

[0030] During the installation of the sensor 2, when the rotating member 11 (or the dial shaft) is located at the lowest end of the shaft end baffle 3 and the vertical correction is achieved, this state is used as the zero point, and in this state, the sensor 2 is connected to the matching member 12 (dial plate) to achieve precise zero adjustment. At the same time, by installing the shaft end baffle 3, the zero adjustment work by rotating the shaft 1 to be measured is avoided. This is because the shaft 1 to be measured usually has a load, and after positioning, it will be affected by the load and rotate, thereby affecting the zero adjustment work of the sensor.

[0031] Preferably, in order to optimize the cooperation between the shift shaft and the activity space 13, only radial activity is allowed, so the activity space 13 of the present application is a strip groove provided on the matching piece 12. Furthermore, the extension direction of the strip groove is radial to the output end of the sensor 2.

[0032] In summary, the utility model provides a positioning device for an angle sensor, including a first positioning hole arranged at the end of the shaft to be measured and an end baffle plate placed at the end of the shaft to be measured and having a second positioning hole arranged at the center; positioning parts are installed in the first positioning hole and the second positioning hole to coaxially position the two; after the positioning parts are installed, the end baffle plate is in a rotatable state; the end baffle plate is eccentrically provided with a counterweight part that drives the end baffle plate to rotate to adjust its center of gravity; after the center of gravity is adjusted, the end baffle plate is fixedly installed with the end of the shaft to be measured through a fixed structure. The utility model can realize the positioning of the end baffle plate and the end of the shaft to be measured through the positioning part, and further realize vertical positioning by adjusting the center of gravity of the end baffle plate using the counterweight part, and connect it with the sensor in this positioning state to realize precision zeroing.

[0033] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A positioning device for an angle sensor, characterized in that: It includes a first positioning hole arranged at the end of the shaft to be measured and a shaft end baffle plate which is placed at the end of the shaft to be measured and has a second positioning hole arranged at the center; Positioning pieces are installed in the first positioning hole and the second positioning hole to position the two coaxially; After the positioning member is installed, the shaft end baffle is in a rotatable state; The shaft end baffle is eccentrically provided with a counterweight for driving the shaft end baffle to rotate so as to adjust its center of gravity; After the center of gravity is adjusted, the shaft end baffle is fixedly installed on the end of the shaft to be measured through a fixing structure.

2. The positioning device for an angle sensor according to claim 1, characterized in that: The positioning member is a pin structure; During positioning, one end is mounted on the sensor bracket, and the other end is inserted into the first positioning hole and the second positioning hole.

3. The positioning device for an angle sensor according to claim 1 or 2, characterized in that: After the positioning member is installed, it is clearance-matched with the shaft end baffle.

4. The positioning device for an angle sensor according to claim 1, characterized in that: The counterweight is a shifting shaft.

5. The positioning device for an angle sensor according to claim 1, characterized in that: The fixing structure comprises a mounting hole arranged at the end of the shaft end baffle and a fixing member passing through the mounting hole and fixed to the end of the shaft to be measured.

6. The positioning device for an angle sensor according to claim 5, characterized in that: The mounting hole is a strip-shaped hole extending in an arc shape.

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