An angle sensor mounting structure

Abstract

This invention relates to the field of disconnector switch technology, specifically to an angle sensor mounting structure. The angle sensor mounting structure includes a housing, a drive shaft rotatably mounted on the housing, a crank arm fixed on the drive shaft, and a mounting bracket fixed to the housing. An angle sensor is fixed on the mounting bracket. The angle sensor includes a main rotating shaft, which is coaxial with and spaced apart from the drive shaft. A first transmission component is mounted on the main rotating shaft, and a second transmission component is mounted on the drive shaft. The first and second transmission components are connected together. The second transmission component is fixed to the end face of the drive shaft by screws. The crank arm has reinforcing ribs, and the second transmission component has an anti-rotation flange that folds towards the crank arm, with a notch on the anti-rotation flange that engages with the reinforcing ribs. Because the angle sensor is fixed when measuring the rotation angle of the drive shaft, the wiring harness connected to the angle sensor remains stationary, making the wiring harness less prone to damage.

Description

Technical Field

[0001] This invention relates to the field of disconnector switch technology, and more specifically to an angle sensor mounting structure. Background Technology

[0002] With my country's economic development and rising living standards, electricity consumption is increasing, leading to a rise in the number of power lines and substations, and placing a heavier workload on maintenance personnel. The increasing number of electrical devices demands higher reliability from power supply systems; any malfunction in these devices can cause power outages and system failures. Disconnect switches are crucial equipment in substations. They consist of a housing, moving and stationary contacts installed within the housing, and an operating mechanism. The operating mechanism, via a drive shaft, rotates the moving contacts of the three-phase contact structure to open and close the disconnect switch. When the disconnect switch is not properly closed or opened, the contact area decreases, leading to increased contact resistance, higher contact point temperature, and ultimately, contact erosion and damage to the electrical equipment. Therefore, accurately detecting the open / closed position of the disconnect switch is of paramount importance.

[0003] The moving and stationary contacts of the disconnecting switch are installed inside the housing. Although the actual open / closed position can be determined through the observation hole and the open / closed indicator, this requires power company maintenance personnel to go to the site for observation. Because substations are relatively dispersed, and the number of unattended substations is increasing, often located far from the power company, each switching operation requires filling out a switching operation work order and sending no fewer than two personnel to the site to check the open / closed status of the disconnecting switch. This wastes a significant amount of manpower and resources and makes the entire switching operation process lengthy.

[0004] Chinese utility model patent CN209246977U discloses a disconnecting switch device, including a housing, a drive shaft rotatably mounted on the housing, a crank arm fixed on the drive shaft, a sensor mounting assembly fixed on the crank arm, and a sensor fixed on the sensor mounting assembly. When the drive shaft rotates, the sensor on the crank arm rotates with the drive shaft, and the wiring harness connected to the sensor moves with the sensor's rotation. Because the wiring harness connected to the sensor moves with the sensor, it is prone to damage, which in turn affects the information transmitted by the sensor. Summary of the Invention

[0005] The purpose of this invention is to provide an angle sensor mounting structure to solve the problem in the prior art where the wiring harness connected to the sensor is easily damaged when the sensor moves.

[0006] To achieve the above objectives, the technical solution of the angle sensor mounting structure of the present invention is as follows:

[0007] An angle sensor mounting structure includes a housing, a drive shaft rotatably mounted on the housing, a crank arm fixed on the drive shaft, and a mounting bracket fixed to the housing. The angle sensor includes a main rotating shaft, which is coaxial with and spaced apart from the drive shaft. A first transmission component is mounted on the main rotating shaft, and a second transmission component is mounted on the drive shaft. The first and second transmission components are connected to drive the main rotating shaft to rotate when the drive shaft rotates, thereby enabling the angle sensor to measure the rotation angle. The second transmission component is fixed to the end face of the drive shaft by screws. The crank arm has reinforcing ribs, and the second transmission component has an anti-rotation flange that folds towards the crank arm, with a notch on the anti-rotation flange that engages with the reinforcing rib to prevent rotation.

[0008] The beneficial effects are as follows: During use, the rotation of the drive shaft drives the main shaft of the angle sensor to rotate, thereby enabling the angle sensor to measure the rotation angle of the drive shaft and determine whether the disconnector is in the open or closed state. Since the angle sensor is fixed when measuring the rotation angle of the drive shaft, the wiring harness connected to the angle sensor remains stationary, reducing the risk of damage and extending its lifespan, ensuring normal information transmission from the angle sensor. Furthermore, the second transmission component is fixed using the mounting holes on the drive shaft end face, and anti-rotation is achieved through the engagement of the reinforcing ribs and notches on the crank arm. This does not alter the structure of the drive shaft and crank arm, facilitating the installation of the second transmission component, and consequently, the installation of the angle sensor.

[0009] As a further improvement, one of the first and second transmission members is provided with a lever extending axially along the transmission shaft, and the other of the first and second transmission members is provided with a socket that mates with the lever.

[0010] The beneficial effect is that when the drive shaft vibrates, the lever can move within the socket, preventing the vibration from being transmitted to the angle sensor and causing measurement errors.

[0011] As a further improvement, the housing is provided with a ring platform arranged coaxially with the drive shaft, and the fixing frame includes a clamp, which fixes the fixing frame to the ring platform.

[0012] The beneficial effect is that this design makes it easy to fix the bracket to the housing.

[0013] As a further improvement, the clamp is provided with a fixing flange that is closely arranged with the housing. The fixing flange has a fixing hole, and the housing has a threaded hole. The fixing flange is fixed to the housing by screws.

[0014] The beneficial effect is that this design prevents the clamp from rotating, which would affect the measurement accuracy of the angle sensor on the mounting bracket.

[0015] As a further improvement, a protective cover for protecting the angle sensor is fixed on the mounting bracket.

[0016] The beneficial effect is that this design avoids the angle sensor from malfunctioning due to sand or ice accumulation.

[0017] As a further improvement, the mounting bracket is an arc-shaped bracket, and the arc-shaped bracket is provided with mounting ears for fixing the angle sensor.

[0018] The benefits are that this design simplifies the structure of the mounting bracket and makes it easier to install the angle sensor. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of Embodiment 1 of the angle sensor mounting structure of the present invention;

[0020] Figure 2 for Figure 1 Exploded view;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure of the second transmission component.

[0022] In the diagram: 11. Housing; 12. Drive shaft; 13. Crank arm; 14. Pull rod; 15. Opening / closing pointer; 16. Reinforcing rib; 17. Ring platform; 18. Fixing bolt; 19. Threaded hole; 20. Lever; 21. Clamp; 22. Fixing flange; 23. Fixing hole; 24. First screw; 25. Insertion hole; 26. Angle sensor; 27. Protective cover; 28. First transmission component; 29. ​​Fixing bracket; 30. Second screw; 31. Third screw; 32. Second transmission component; 33. Notch; 34. Anti-rotation flange. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Additionally, the terms "front," "rear," "upper," "lower," "left," and "right" are based on the orientation and positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention, not to indicate that the referred device or component must have a specific orientation, and therefore should not be construed as limiting the invention.

[0026] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0027] Embodiment 1 of the angle sensor mounting structure of the present invention:

[0028] like Figure 1 and Figure 2 As shown, the angle sensor mounting structure includes a housing 11, a drive shaft 12 is rotatably mounted on the housing 11, a crank arm 13 is fixed on the drive shaft 12, and a pull rod 14 is connected to the end of the crank arm 13 away from the drive shaft 12. The pull rod 14 is provided with a switch open / close pointer 15. When the pull rod 14 moves, the switch open / close pointer 15 moves accordingly to indicate whether the disconnecting switch is in the open or closed position.

[0029] In this embodiment, the angle sensor mounting structure also includes a mounting bracket 29 fixed on the housing 11. The mounting bracket 29 is provided with mounting ears. The angle sensor 26 and the protective cover 27 are fixed on the mounting bracket 29 through the mounting ears. The protective cover 27 is used to protect the angle sensor 26 to prevent the angle sensor 26 from being damaged by sand or ice.

[0030] In this embodiment, the housing 11 is provided with a ring platform 17 arranged coaxially with the drive shaft 12. The fixing frame 29 includes an arc plate and a clamp 21. The angle sensor 26 and the protective cover 27 are fixed on the arc plate. The clamp 21 is fixed on the ring platform 17 by fixing bolts 18, so that the fixing frame 29 is fixed on the ring platform 17. This design facilitates the assembly and disassembly of the fixing frame 29.

[0031] In this embodiment, the clamp 21 is provided with a fixing flange 22 that is closely arranged with the housing 11. The fixing flange 22 is provided with a fixing hole 23, and the housing 11 is provided with a threaded hole 19. The fixing flange 22 is fixed to the housing 11 by a first screw 24. This design avoids relative rotation between the clamp 21 and the drive shaft 12 after the clamp is fixed, so as to ensure that the angle sensor 26 will not rotate.

[0032] In this embodiment, the fixing hole 23 is an elongated hole. This design ensures that after the clamp 21 is fixed on the ring platform 17, the threaded hole 19 can correspond to the fixing hole 23 so that the first screw 24 can be screwed in.

[0033] like Figure 2 As shown, the angle sensor 26 includes a main rotating shaft, which is coaxial with and spaced apart from the transmission shaft 12. A transmission structure is provided between the main rotating shaft and the transmission shaft 12 to drive the main rotating shaft to rotate when the transmission shaft 12 rotates, thereby enabling the angle sensor 26 to measure the rotation angle. The angle sensor 26 is an existing mature product and will not be described in detail here, such as the magnetic angle sensor disclosed in Chinese Utility Model Patent No. CN215261613U.

[0034] In this embodiment, the transmission structure includes a first transmission component 28 and a second transmission component 32. The first transmission component 28 is fixed to the main shaft of the angle sensor 26 by a second screw 30, and the second transmission component 32 is fixed to the transmission shaft 12 by a third screw 31. The first transmission component 28 is provided with a socket 25, and the second transmission component 32 is provided with a lever 20. The lever 20 is inserted into the socket 25 to connect the first transmission component 28 and the second transmission component 32 together. When the transmission shaft 12 vibrates, the lever 20 can move within the socket to prevent vibration from being transmitted to the angle sensor 26 and causing measurement errors.

[0035] In this embodiment, an anti-rotation structure is provided between the second transmission member 32 and the crank arm 13 to prevent the second transmission member 32 from rotating relative to the transmission shaft 12. Specifically, as shown in... Figure 2 and Figure 3 As shown, the crank arm 13 is provided with a reinforcing rib 16, which extends along the length of the crank arm 13. The second transmission member 32 has an anti-rotation flange 34 that folds towards the crank arm 13, and the anti-rotation flange 34 has a notch 33 that cooperates with the anti-rotation of the reinforcing rib 16. The notch 33 and the reinforcing rib 16 together constitute the anti-rotation structure.

[0036] In use, the drive shaft 12 rotates to drive the second transmission component 32 on the crank arm 13 to rotate. The second transmission component 32 drives the main shaft of the angle sensor 26 to rotate via the first transmission component 28, thereby enabling the angle sensor 26 to measure the rotation angle of the drive shaft 12 and determine whether the disconnector is in the open or closed state. Since the angle sensor 26 is fixed when measuring the rotation angle of the drive shaft 12, the wiring harness connected to the angle sensor 26 remains stationary, making the wiring harness less prone to damage, increasing its service life, and ensuring that the angle sensor 26 can transmit information normally.

[0037] Embodiment 2 of the angle sensor mounting structure of the present invention:

[0038] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the first transmission member has a socket, and the second transmission member has a lever that mates with the socket. In this embodiment, the first transmission member has a protrusion, and the second transmission member has a recess that mates with the protrusion.

[0039] Embodiment 3 of the angle sensor mounting structure of the present invention:

[0040] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the housing is provided with a ring platform arranged coaxially with the drive shaft, and the fixing frame includes a clamp, which fixes the fixing frame to the ring platform. In this embodiment, no clamp is provided, and the fixing frame includes a fan-shaped flange arranged close to the housing, which fixes the fixing frame to the housing.

[0041] Embodiment 4 of the angle sensor mounting structure of the present invention:

[0042] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the clamp has a fixing flange that is tightly arranged against the shell, the fixing flange has a fixing hole, the shell has a threaded hole, and the fixing flange is fixed to the shell by screws. In this embodiment, no fixing flange is provided, and a concave-convex structure is provided between the inner side of the clamp and the outer side of the ring platform to prevent the clamp from rotating relative to the ring platform after it is fixed to the ring platform.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. An angle sensor mounting structure, comprising a housing, a drive shaft rotatably mounted on the housing, and a crank arm fixed on the drive shaft, characterized in that, It also includes a mounting bracket fixed to the housing, on which an angle sensor is fixed. The angle sensor includes a main rotating shaft, which is coaxial with and spaced apart from the transmission shaft. A first transmission component is provided on the main rotating shaft, and a second transmission component is provided on the transmission shaft. The first and second transmission components are connected together to drive the main rotating shaft to rotate when the transmission shaft rotates, thereby enabling the angle sensor to measure the rotation angle. The second transmission component is fixed to the end face of the transmission shaft by screws. A reinforcing rib is provided on the crank arm. The second transmission component has an anti-rotation flange that folds towards the crank arm. The anti-rotation flange has a notch that cooperates with the anti-rotation rib. One of the first and second transmission components has a lever extending axially along the transmission shaft, and the other of the first and second transmission components has a socket that cooperates with the lever.

2. The angle sensor mounting structure according to claim 1, characterized in that, The housing is provided with a ring platform arranged coaxially with the drive shaft, and the fixing frame includes a clamp, which fixes the fixing frame to the ring platform.

3. The angle sensor mounting structure according to claim 2, characterized in that, The clamp is provided with a fixing flange that is closely arranged with the shell. The fixing flange has a fixing hole, and the shell has a threaded hole. The fixing flange is fixed to the shell by screws.

4. The angle sensor mounting structure according to claim 1, characterized in that, A protective cover for protecting the angle sensor is fixed on the mounting bracket.

5. The angle sensor mounting structure according to claim 1, characterized in that, The mounting bracket is an arc-shaped bracket, and the arc-shaped bracket is provided with mounting ears for fixing the angle sensor.

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