Device and method for zero setting of angular displacement sensor

Abstract

The invention provides a device and method for zero setting of an angular displacement sensor, and belongs to the technical field of system debugging. In the device, a second thin-wall bearing is located in a mounting groove reserved in the center of a tray base; the driven gear is arranged on the second thin-wall bearing, and the clamping piece is arranged below the second thin-wall bearing; after the gear roller and the double-layer gear are in clearance fit, the lower end is inserted into a gear roller socket preset in the tray base, the upper end is inserted into an inner ring hole of the fixed plate, and small gear teeth of the double-layer gear are meshed with the driven gear; an outer ring hole of the fixing plate is fixed at a specified position of the tray base; the first thin-wall bearing is installed in an installation groove in the center of the fixing plate, the driving gear is inserted into the first thin-wall bearing and is in close fit with the inner wall of the bearing, and meanwhile a gear on the driving gear is meshed with a large gear of the double-layer gear; the circular cover shell is fixedly mounted on the driving gear; the angular displacement sensor can be quickly rotated to a specified angle, and the reliability of a test result is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of system debugging, and in particular relates to a device and method for zeroing an angular displacement sensor. Background Art

[0002] In the existing system debugging, the zeroing method for the angular displacement sensor is to use manual rotation.

[0003] However, since everyone's zeroing level is different, there will be large differences in the zeroing quality and efficiency during the experiment, which will restrict work efficiency to a certain extent and affect the production progress of the entire system debugging.

[0004] Therefore, it is necessary to provide a device and method for zeroing an angular displacement sensor, which can quickly rotate the angular displacement sensor to a specified angle, thereby improving the reliability of the test results. Summary of the invention

[0005] In order to solve the technical problem in the prior art that the angular displacement sensor cannot be quickly rotated to a specified angle and the reliability of the test results is low, the present invention provides a device and method for zeroing an angular displacement sensor, which can quickly rotate the angular displacement sensor to a specified angle, thereby improving the reliability of the test results.

[0006] In a first aspect, the present invention provides a device for zeroing an angular displacement sensor, comprising: a circular cover shell 1, a driving gear 2, a first thin-walled bearing 3, a fixing plate 4, a double-layer gear 5, a driven gear 6, a second thin-walled bearing 7, a support column 8, a tray base 9 and a clamp 11;

[0007] The second thin-walled bearing 7 is located in a mounting groove reserved in the center of the tray base 9; the driven gear 6 is arranged on the second thin-walled bearing 7, the clamp 11 is arranged below the second thin-walled bearing 7, the driven gear 6 is connected to the clamp 11 and fixed in the second thin-walled bearing 7; the clamp 11 is penetrated by a through hole for inserting the rotating shaft of the angular displacement sensor;

[0008] After the gear roller 12 and the double-layer gear 5 are clearance-matched, the lower end of the gear roller 12 is inserted into the gear roller socket pre-set in the tray base 9; the upper end of the gear roller 12 is inserted into the inner circle hole of the fixing plate 4 for positioning, and at the same time, the small gear teeth of the double-layer gear 5 are meshed with the driven gear 6;

[0009] The outer circle holes of the fixing plate 4 are fixed to the designated positions of the tray base 9 through the supporting columns 8;

[0010] The first thin-walled bearing 3 is installed in the installation groove in the center of the fixing plate 4, the driving gear 2 is inserted into the first thin-walled bearing 3, and is tightly matched with the inner wall of the first thin-walled bearing 3, and at the same time, the gear on the driving gear 2 is meshed with the large gear of the double-layer gear 5;

[0011] The circular cover shell 1 is fixedly mounted on the driving gear 2 , and a gap is reserved between the bottom end of the circular cover shell 1 and the tray base 9 .

[0012] Furthermore, the device also includes a sealing ring 10 arranged in the sealing groove on the upper side of the tray base 9, so as to ensure that the circular cover shell 1 remains balanced when the circular cover shell 1 is rotated, and at the same time play a certain sealing role for the overall device.

[0013] Furthermore, the bottom surface of the tray base 9 is provided with a wavy anti-slip surface to increase the friction between it and the angular displacement sensor, thereby ensuring that the contact with the angular displacement sensor during zero adjustment will not cause zero adjustment failure due to sliding.

[0014] Optionally, the driven gear 6 is provided with a nut groove, and the clamping member 11 is provided with a through hole that cooperates with the nut groove;

[0015] The driven gear 6 is a three-layer boss structure. The bottom boss is located in the second thin-walled bearing 7 and is clearance-matched with the inner wall of the second thin-walled bearing 7. The top boss is a gear meshing with the small gear teeth of the double-layer gear 5. The thickness of the middle boss is less than 2 mm. This allows a distance to exist between the top boss and the second thin-walled bearing 7, preventing the outer wall of the second thin-walled bearing 7 from rotating when the driven gear 6 rotates.

[0016] Optionally, the driving gear 2 is provided with a threaded hole, and the circular cover shell 1 is provided with a through hole that cooperates with the threaded hole;

[0017] The driving gear 2 is a three-layer boss gear, the lowest boss is a gear meshing with the large gear of the double-layer gear 5, the highest boss contacts the bottom end of the circular cover shell 1, the thickness of the middle boss is less than 5 mm and is located in the mounting groove in the center of the first thin-walled bearing 3 and the fixing plate 4, so that there is a distance between the lowest boss and the circular cover shell 1, preventing the outer wall of the first thin-walled bearing 3 from rotating when the circular cover shell 1 rotates.

[0018] Optionally, the number of teeth of the driving gear 2 is 48 and the module is 0.6, so as to improve the zero adjustment accuracy.

[0019] Optionally, the double-layer gear 5 has a large number of teeth of 59, a module of 0.6, and a tooth thickness of 4 mm; and a small number of teeth of 15, a module of 0.8, and a tooth thickness of 7 mm, so as to improve the zeroing accuracy.

[0020] Optionally, the number of teeth of the driven gear 6 is 65 and the module is 0.8.

[0021] In a second aspect, the present invention provides a method for zeroing an angular displacement sensor used in the device for zeroing an angular displacement sensor according to the first aspect, the method comprising:

[0022] Connecting the angular displacement sensor to be adjusted to an external testing device, the testing device is used to display the angle of the angular displacement sensor in real time;

[0023] Place the device for zeroing the angular displacement sensor above the angular displacement sensor, and insert the rotating shaft of the angular displacement sensor into the clamp 11 of the device for zeroing the angular displacement sensor;

[0024] The circular cover shell 1 of the device for zeroing the angular displacement sensor is rotated to drive the driving gear 2. Since the driving gear 2 is meshed with the large gear of the double-layer gear 5, the rotation of the driving gear 2 drives the double-layer gear 5 to rotate; since the small gear in the double-layer gear 5 is meshed with the driven gear 6, the driven gear 6 and the clamp 11 rotate at the same frequency, driving the rotating shaft of the angular displacement sensor to be zeroed to rotate, and the angle of the angular displacement sensor is obtained through the test equipment; then the angular displacement sensor is rotated to the specified angle according to the test requirements.

[0025] The beneficial effects of the present invention are at least:

[0026] The speed reduction mechanism in the device greatly ensures the accuracy of each rotation of the angular displacement sensor shaft. The real-time angle of the angular displacement sensor can be viewed through the test equipment when the angular displacement sensor is powered on. The angular displacement sensor can be quickly rotated to the specified angle by rotating the device, thereby improving the reliability of the test results, greatly saving the time of zeroing the angular displacement sensor during system debugging, improving production efficiency, reducing the labor intensity of operators and increasing efficiency by nearly 70%;

[0027] The present invention is a purely mechanical structure, does not contain any easily worn components, does not require frequent maintenance under normal use, has low manufacturing cost and strong reproducibility;

[0028] In addition, the debugging requirements of similar disc-type angular displacement sensors can be met by simply replacing the card parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0030] Figure 1 It is a schematic diagram of the structure explosion of a device for zeroing an angular displacement sensor provided by an embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of the installation planing surface after the assembly of a mechanical device for zeroing an angular displacement sensor provided by an embodiment of the present invention;

[0032] Figure 3It is a schematic diagram of the dimensions of a device for zeroing an angular displacement sensor provided by an embodiment of the present invention after being assembled;

[0033] Figure 4 is a schematic structural diagram of a component tray base in a device provided by an embodiment of the present invention;

[0034] Figure 5 It is a schematic diagram of a zeroing method for cooperating with a target angular displacement sensor when the device provided by an embodiment of the present invention is used. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0036] In the flight control system debugging test, the actual position of the sensor will directly affect the results of some tests. The present invention aims to achieve rapid rotation of the angular displacement sensor to a specified angle through a reasonable mechanical structure, thereby improving the reliability of the test results.

[0037] The device provided in the embodiment of the present invention improves the accuracy of manual rotation adjustment of the sensor by several times through the meshing between large and small gears, so that the rotation angle of the sensor can be accurately controlled during manual rotation; it has the function of quickly rotating the rotating column in the sensor to a specified position, which can greatly save production preparation time, improve production efficiency, and reduce the labor intensity of operators.

[0038] The present invention is a purely mechanical structure, the components are connected by screws and gears, and the operation is simple and convenient.

[0039] See also Figure 1 and Figure 2 The embodiment of the present invention provides a device for zeroing an angular displacement sensor, comprising: a circular cover shell 1, a driving gear 2, a first thin-walled bearing 3, a fixing plate 4, a double-layer gear (5, a driven gear 6, a second thin-walled bearing 7, a support column 8, a tray base 9, a sealing ring 10, and a clamp 11.

[0040] The tray base 9 is the main bearing component of the entire device, and other components are assembled based on the tray base;

[0041] The second thin-walled bearing 7 is installed in the installation groove reserved in the center of the tray base 9; the outer wall of the second thin-walled bearing 7 and the installation groove reserved in the center of the tray base 9 are installed by interference fit. The overall device is mainly worked by the radial force of each part, so this assembly method fully meets the use requirements of the device.

[0042] The driven gear 6 is placed on the second thin-walled bearing 7, and the clamp 11 is placed under the second thin-walled bearing 7; the driven gear 6 is a boss gear, the boss passes through the second thin-walled bearing 7, and the outer wall of the boss is gap-matched with the inner wall of the second thin-walled bearing 7.

[0043] In one feasible embodiment, the driven gear 6 is a three-layer boss structure, the bottom boss is located in the second thin-walled bearing 7 and is clearance-matched with the inner wall of the second thin-walled bearing 7, the top boss is a gear meshing with the small gear teeth of the double-layer gear 5, and the thickness of the middle boss is less than 2 mm, so that there is a distance between the top boss and the second thin-walled bearing 7, preventing the outer wall of the second thin-walled bearing 7 from rotating when the driven gear 6 rotates.

[0044] The clamp 11 is penetrated with a through hole for inserting the rotating shaft of the angular displacement sensor, so as to facilitate the insertion of the rotating shaft of the angular displacement sensor.

[0045] The driven gear 6 and the clamp 11 are connected and fixed in the second thin-walled bearing 7 by screws; for example, the driven gear 6 and the clamp 11 are connected by four M2*10 bolts, and the nuts used for the bolts are inserted into the nut grooves on the driven gear 6, so that the driven gear 6 and the clamp 11 are installed in the device.

[0046] After the gear roller 12 and the double-layer gear 5 are clearance-matched, the lower end of the gear roller 12 is inserted into the gear roller socket pre-installed in the tray base 9; the upper end of the gear roller 12 is inserted into the fixing plate 4 for positioning, and at the same time, the small gear teeth of the double-layer gear 5 are meshed with the driven gear 6.

[0047] The fixing plate 4 is fixed at the designated position by the support columns 8; for example, the fixing plate 4 can be fixed at the designated position by six support columns 8 of the same specification.

[0048] The first thin-walled bearing 3 is installed in the installation groove in the center of the fixing plate 4 and is also fastened and installed by using an interference fit.

[0049] The driving gear 2 is inserted into the first thin-walled bearing 3 and is tightly matched with the inner wall of the bearing. At the same time, the gear on the driving gear 2 is meshed with the large gear of the double-layer gear 5.

[0050] In one feasible embodiment, the driving gear 2 is a three-layer boss gear, the bottom boss is a gear meshing with the large gear of the double-layer gear 5, the top boss contacts the bottom end of the circular cover shell 1, the thickness of the middle boss is less than 5 mm and is located in the mounting groove in the center of the first thin-walled bearing 3 and the fixed plate 4, so that there is a distance between the bottom boss and the circular cover shell 1, preventing the outer wall of the first thin-walled bearing 3 from rotating when the circular cover shell 1 rotates.

[0051] The circular cover shell 1 is fixed by being installed in the threaded holes reserved on the driving gear 2 by four screws; and a gap is reserved between the bottom end of the circular cover shell 1 and the tray base 9 .

[0052] In another embodiment, the device provided by the embodiment of the present invention further includes a sealing ring 10 arranged on the upper side of the tray base 9, so as to ensure that the circular cover shell 1 remains balanced when rotating, and at the same time play a certain sealing role for the overall device.

[0053] See also Figure 4 In another embodiment, the tray base 9 provides structural support for the entire device, and its bottom surface is provided with a wavy anti-slip surface to increase the friction between it and the angular displacement sensor, ensuring that the contact with the angular displacement sensor during zero adjustment will not cause zero adjustment failure due to sliding. Figure 5 .

[0054] In another embodiment, the driven gear 6 is provided with four nut grooves, the clamping member 11 is provided with through holes that cooperate with the nut grooves, and the driven gear 6 and the clamping member 11 are fixedly connected by screws.

[0055] The driving gear 2 is provided with four threaded holes, and the circular cover shell 1 is provided with through holes that are matched with the threaded holes.

[0056] For example, the number of teeth of the driving gear 2 is 48 and the module is 0.6, which is convenient for improving the zero adjustment accuracy.

[0057] The double-layer gear 5 has a large number of teeth of 59, a module of 0.6, and a tooth thickness of 4 mm; a small number of teeth of 15, a module of 0.8, and a tooth thickness of 7 mm, which is convenient for improving the zeroing accuracy.

[0058] In one embodiment, the driven gear 6 has 65 teeth and a module of 0.8, which facilitates improving the zero adjustment accuracy.

[0059] See also Figure 3 , which is a schematic diagram of the dimensions of a device for zeroing an angular displacement sensor provided in an embodiment of the present invention after being assembled. After assembly, the overall thickness of the device is 3.25 cm, the structure volume is small, and it does not take up space.

[0060] An embodiment of the present invention also provides a method for zeroing an angular displacement sensor, see Figure 1 , Figure 2 and Figure 5 , the method comprises the following steps:

[0061] Step 1: Connect the angular displacement sensor to be adjusted to an external testing device, where the testing device is used to display the angle of the angular displacement sensor in real time;

[0062] Step 2: placing the device for zeroing the angular displacement sensor above the angular displacement sensor, and inserting the rotating shaft of the angular displacement sensor into the clamp 11 of the device for zeroing the angular displacement sensor;

[0063] Step 3, rotate the circular cover shell 1 of the device for zeroing the angular displacement sensor to drive the driving gear 2. Since the driving gear 2 is meshed with the large gear of the double-layer gear 5, the rotation of the driving gear 2 drives the double-layer gear 5 to rotate; since the small gear in the double-layer gear 5 is meshed with the driven gear 6, the driven gear 6 and the clamp 11 rotate at the same frequency, driving the rotating shaft of the angular displacement sensor to be zeroed to rotate, and obtaining the angle of the angular displacement sensor through the test equipment; then, the angular displacement sensor is rotated to the specified angle according to the test requirements.

[0064] The above only expresses the implementation methods of the present application, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. In addition, the parts that are not detailed in this application are all conventional technologies.

Claims

1. A device for zeroing an angular displacement sensor, characterized in that: include: A circular cover shell, a driving gear, a first thin-walled bearing, a fixing plate, a double-layer gear, a driven gear, a second thin-walled bearing, a supporting column, a tray base and a clamp; The second thin-walled bearing is located in a mounting groove reserved in the center of the tray base; the driven gear is connected to the clamp and fixed in the second thin-walled bearing; the clamp is penetrated by a through hole for inserting the rotating shaft of the angular displacement sensor; After the gear roller and the double-layer gear are matched through clearance, the lower end of the gear roller is inserted into the gear roller socket pre-installed in the tray base; the upper end of the gear roller is inserted into the inner circle hole of the fixed plate for positioning, and at the same time, the small gear teeth of the double-layer gear are meshed with the driven gear; The outer circle holes of the fixing plate are fixed at the designated positions of the pallet base through the supporting columns; The first thin-walled bearing is installed in the installation groove in the center of the fixed plate, the driving gear is inserted into the first thin-walled bearing and tightly matched with the inner wall of the first thin-walled bearing, and the gear on the driving gear is meshed with the large gear of the double-layer gear; The circular cover shell is fixedly mounted on the driving gear, and a gap is reserved between the bottom end of the circular cover shell and the tray base.

2. The device according to claim 1, characterized in that The device also includes a sealing ring arranged in the sealing groove on the upper side of the tray base.

3. The device according to claim 1, characterized in that The bottom surface of the tray base is provided with a wavy anti-slip surface.

4. The device according to claim 1, characterized in that The driven gear is provided with a nut groove extending therethrough, and the clamp is provided with a through hole matched with the nut groove; The driven gear is a three-layer boss structure. The bottom boss is located in the second thin-walled bearing and has a clearance fit with the inner wall of the second thin-walled bearing. The top boss is a gear meshing with the small gear teeth of the double-layer gear. The thickness of the middle boss is less than 2mm.

5. The device according to claim 1, characterized in that The driving gear is provided with a threaded hole, and the circular cover shell is provided with a through hole matched with the threaded hole. The driving gear is a three-layer boss gear, the bottom boss is a gear meshing with the large gear of the double-layer gear, the top boss contacts the bottom end of the circular cover shell, the middle boss is less than 5mm thick and is located in the mounting groove in the center of the first thin-walled bearing and the fixing plate.

6. The device according to claim 1, characterized in that The number of teeth of the driving gear is 48 and the module is 0.

6.

7. The device according to claim 1, characterized in that The double-layer gear has 59 large teeth, a module of 0.6, and a tooth thickness of 4 mm; the small teeth have 15 small teeth, a module of 0.8, and a tooth thickness of 7 mm.

8. The device according to claim 1, characterized in that The number of teeth of the driven gear is 65 and the module is 0.

8.

9. A method for zeroing an angular displacement sensor used in the device for zeroing an angular displacement sensor according to any one of claims 1 to 8, characterized in that: The method comprises: Connecting the angular displacement sensor to be adjusted to an external testing device, the testing device being used to display the angle of the angular displacement sensor in real time; Placing the device for zeroing the angular displacement sensor above the angular displacement sensor, and inserting the rotating shaft of the angular displacement sensor into the clamp of the device for zeroing the angular displacement sensor; The circular cover shell of the device for zeroing the angular displacement sensor is rotated to drive the driving gear. Since the driving gear is meshed with the large gear of the double-layer gear, the rotation of the driving gear drives the double-layer gear to rotate; since the small gear in the double-layer gear is meshed with the driven gear, the driven gear rotates at the same frequency in combination with the clamp, driving the rotating shaft of the angular displacement sensor to be zeroed to rotate, and the angle of the angular displacement sensor is obtained through the test equipment; then the angular displacement sensor is rotated to the specified angle according to the test requirements.

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