Variable-speed transmission system for isolating switch mechanism case

Abstract

The utility model discloses a variable-speed transmission system for an isolating switch mechanism box. The variable-speed transmission system comprises a box body; the rotary driving mechanism is mounted in the box body and is provided with a rotatable output shaft; the worm is in transmission connection with the output shaft through a speed reduction transmission mechanism; the output operation shaft is rotationally installed on the box body and provided with a turbine, and the turbine is in transmission connection with the worm; the encoder is mounted in the box body, and the mounting position of the encoder can be vertically and transversely adjusted; the encoder is connected with a transmission shaft, and the transmission shaft is in concave-convex fit with the output operation shaft. Due to the transmission characteristics of the worm and the turbine, self-locking can be achieved, the failure rate caused by floating of the operation shaft is reduced, and the reliability of the whole system is improved; the mounting position of the encoder can be vertically and transversely adjusted, the position can be conveniently adjusted during mounting so as to reach a proper mounting position, and the transmission shaft and the output operation shaft realize torque transmission without the help of a fastener due to the concave-convex matching design of the transmission shaft and the output operation shaft, so that mounting and dismounting are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to a variable speed transmission system for an isolating switch mechanism box. Background Art

[0002] In power systems and automation equipment, disconnector mechanism boxes are critical components for ensuring stable power system operation. They must not only ensure stable operation but also be easy to install and maintain. The development of smart grids is placing higher demands on the intelligence and reliability of disconnector operation. To achieve precise control of opening and closing operations, encoders are often required to monitor the rotation of the operating shaft. Encoders convert mechanical position or motion into electrical signals for monitoring and controlling the position and speed of the disconnector. However, traditional encoders are typically fixedly connected to the operating shaft, limiting installation flexibility and potentially causing operational inconvenience. Furthermore, the operating shaft may float after opening and closing, affecting operational accuracy and potentially increasing the risk of failure. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a variable speed transmission system for an isolating switch mechanism box.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0005] A variable speed transmission system for an isolating switch mechanism box comprises: a box body; a rotary drive mechanism installed in the box body and having a rotatable output shaft; a worm gear connected to the output shaft through a reduction transmission mechanism; an output operating shaft rotatably installed in the box body and partially extending out of the box body, the portion of the output operating shaft located in the box body being provided with a synchronously rotatable turbine gear, the turbine gear being connected to the worm gear; an encoder installed in the box body and capable of adjusting the installation position vertically and laterally; a transmission shaft connected to the encoder, the transmission shaft and the output operating shaft being matched in a concave-convex manner so that the transmission shaft and the output operating shaft can rotate synchronously.

[0006] Furthermore, a mounting bracket is installed in the box body, and a vertical strip hole is provided on the mounting bracket, and a bolt is passed through the strip hole. The bolt is horizontally passed through the strip hole and can be adjusted vertically along the strip hole. A bolt head is provided at one end of the bolt, and a first nut and two second nuts are threadedly connected to the bolt, and the first nut and the bolt head are used to clamp the mounting bracket; the encoder housing is provided with a connecting ear, and the connecting ear is provided with a connecting hole for the bolt to pass through, and the two second nuts are used to clamp the connecting ear, and the two second nuts can be adjusted laterally along the bolt.

[0007] Furthermore, the connecting ears, the bar-shaped holes, the bolts, the first nuts and the second nuts are each provided in two groups spaced apart from one another.

[0008] Furthermore, a notch is provided on the upper side of the connection hole on the upper connection ear, and a notch is provided on the lower side of the connection hole on the lower connection ear.

[0009] Furthermore, a connector is provided at one end of the transmission shaft facing the output operating shaft, a groove is provided on the end face of the connector, and a convex strip embedded in the groove is provided on the end face of the output operating shaft facing the transmission shaft.

[0010] Furthermore, a limit rod is provided on the peripheral wall of the output operating shaft, and a movable plate and a travel switch are installed in the box body. The movable plate is elastically and movably installed in the box body, the travel switch is on the movable path of the movable plate, and the movable plate is on the movable path of the limit rod; the rotation of the limit rod can drive the movable plate to press the travel switch.

[0011] Furthermore, the limit rod, the travel switch and the movable plate are provided in two groups to limit the travel of rotation in two directions.

[0012] Furthermore, a reinforcing rib is connected between the two limiting rods.

[0013] Furthermore, the movable plate is provided with a guide rod, a guide block is installed in the box body, the guide block is provided with a guide hole for the guide rod to pass through, and an elastic member is installed between the guide block and the movable plate.

[0014] Furthermore, the elastic member is a compression spring sleeved on the guide rod.

[0015] The utility model has the following beneficial effects:

[0016] By installing a rotary drive mechanism, a worm, and a reduction transmission mechanism in the box, precise control of the output operating shaft is achieved. This precise transmission system can ensure the accurate opening and closing operations of the disconnector mechanism; and due to the transmission characteristics of the worm and the turbine, self-locking can be achieved, reducing the failure rate caused by the floating of the operating shaft and improving the reliability of the entire system; the encoder can adjust the installation position vertically and horizontally, and can be adapted to more encoder models. It is also convenient to adjust the position during installation to achieve a suitable installation position, and the concave-convex matching design of the transmission shaft and the output operating shaft enables the transmission shaft to rotate synchronously with the output operating shaft, while the transmission shaft and the output operating shaft do not use fasteners to achieve torque transmission, which is convenient for installation and disassembly.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the utility model from another perspective;

[0021] Figure 3 yes Figure 2 A magnified view of point A;

[0022] Figure 4 It is a schematic diagram of the structure of the local structure decomposition state;

[0023] Figure 5 It is a schematic diagram of the connection state structure of a part of the structure;

[0024] Figure 6 yes Figure 5 Magnified view of point B;

[0025] Figure 7 yes Figure 5 Enlarged view of point C;

[0026] Figure 8 This is a schematic diagram of the exploded structure of the mounting bracket and encoder;

[0027] Figure 9 It is a schematic diagram of the transmission connection structure of the worm, the reduction transmission mechanism and the output operating shaft.

[0028] Legend:

[0029] Box 100, mounting bracket 110, strip-shaped hole 111, bolt 120, bolt head 121, first nut 122, second nut 123, movable plate 130, guide rod 131, travel switch 140, guide block 150, elastic member 160;

[0030] Rotation drive mechanism 200, output shaft 210, first driving gear 211;

[0031] worm 300, third transmission gear 310;

[0032] reduction transmission mechanism 400, first transmission gear 410, second transmission gear 420;

[0033] Output operating shaft 500, turbine 510, ridge 520, limit rod 530, reinforcement rib 531;

[0034] Encoder 600 , transmission shaft 610 , connector 611 , groove 612 , connecting ear 620 , connecting hole 621 , notch 622 . DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0039] Please refer to Figure 1 and Figure 2 In a preferred embodiment of the present invention, a variable speed transmission system for an isolating switch mechanism box includes a box body 100, a rotary drive mechanism 200, a worm 300, a reduction transmission mechanism 400, an output operating shaft 500, and an encoder 600.

[0040] An installation space is provided in the box body 100 , and an openable door is installed on the periphery of the box body 100 .

[0041] The rotary drive mechanism 200 is installed in the housing 100 and has a rotatable output shaft 210. The rotary drive mechanism 200 can be a motor. The worm 300 is connected to the output shaft 210 through a reduction gear mechanism 400, which can reduce the speed and increase the torque.

[0042] The output operating shaft 500 is rotatably mounted on the housing 100. A portion of the output operating shaft 500 extends from the housing 100 to facilitate connection with external structures and output torque. A synchronously rotating turbine 510 is mounted on the portion of the output operating shaft 500 located within the housing 100. The turbine 510 is fixedly mounted on the output operating shaft 500 so that the output operating shaft 500 and the turbine 510 rotate synchronously, thereby achieving torque transmission. The turbine 510 is drivingly connected to the worm 300.

[0043] The encoder 600 is installed in the housing 100 and can be adjusted in both vertical and horizontal directions. A transmission shaft 610 is connected to the encoder 600, and the transmission shaft 610 is mated with the output operating shaft 500 in a concave-convex manner so that the transmission shaft 610 and the output operating shaft 500 can rotate synchronously. An encoder is a device that converts mechanical displacement or angle into an electrical signal and is a commonly used component. The encoder typically comprises a code disk for encoding mechanical position, which is connected to the transmission shaft 610 for synchronous rotation. The rotating part of the encoder is typically a code disk, which has a series of grooves or slots. The number and arrangement of these grooves or slots determine the resolution and accuracy of the encoder. The code disk rotates along with the encoder's transmission shaft 610, and its rotational motion is converted into an electrical signal.

[0044] In a preferred embodiment provided by the present invention, a variable speed transmission system for an isolating switch mechanism box is achieved by installing a rotary drive mechanism 200 and a worm 300, as well as a reduction transmission mechanism 400 in the box body 100, so as to achieve precise control of the output operating shaft 500. This precise transmission system can ensure the accurate opening and closing operation of the isolating switch mechanism; and due to the transmission characteristics of the worm 300 and the turbine 510, self-locking can be achieved, reducing the failure rate caused by the floating of the operating shaft and improving the reliability of the entire system; the encoder 600 can adjust the installation position vertically and horizontally, and can be adapted to more encoder 600 models, and the position can be easily adjusted during installation to achieve a suitable installation position, and the concave-convex matching design of the transmission shaft 610 and the output operating shaft 500 enables the transmission shaft 610 to rotate synchronously with the output operating shaft 500, while the transmission shaft 610 and the output operating shaft 500 do not achieve torque transmission with the aid of fasteners, which is convenient for installation and disassembly.

[0045] Reference Figure 4 、 Figure 5 and Figure 9The rotary drive mechanism 200 has a gearbox fixed to its housing. The reduction transmission mechanism 400 comprises an intermediate shaft rotatably mounted within the gearbox, and a first transmission gear 410 and a second transmission gear 420 mounted on the intermediate shaft. The first transmission gear 410, the second transmission gear 420, and the intermediate shaft rotate synchronously. A first driving gear 211 is connected to the output shaft 210 and meshes with the first transmission gear 410. A third transmission gear 310 is mounted on one end of the worm 300 and meshes with the second transmission gear 420. The first driving gear has fewer teeth than the first transmission gear, and the second transmission gear has fewer teeth than the third transmission gear. This achieves a dual-stage reduction and provides stable and precise gear transmission.

[0046] Reference Figure 5 、 Figure 6 and Figure 8 In some embodiments of the present utility model, a mounting bracket 110 is installed in the box body 100, and a vertical strip hole 111 is provided on the mounting bracket 110. A bolt 120 is passed through the strip hole 111. The bolt 120 is horizontally passed through the strip hole 111 and can be vertically adjusted along the strip hole 111. A bolt head 121 is provided at one end of the bolt 120, and a first nut 122 and two second nuts 123 are threadedly connected to the bolt 120. The first nut 122 and the bolt head 121 are used to clamp the mounting bracket 110 to achieve position fixing. The bolt 120 vertically adjusts its position along the strip hole 111 and cooperates with the first nut 122 to achieve vertical position adjustment of the encoder 600 and position fixing after adjustment. The encoder 600 housing is provided with a connecting ear 620, and the connecting ear 620 is provided with a connecting hole 621 for the bolt 120 to pass through. The two second nuts 123 are used to clamp the connecting ear 620, and the two second nuts 123 can be adjusted laterally along the bolt 120, thereby realizing the position adjustment and position fixation of the connecting ear 620 in the lateral position.

[0047] Reference Figure 5 、 Figure 6 and Figure 8 In a further embodiment of the present invention, the connecting lugs 620, the strip-shaped holes 111, the bolts 120, the first nuts 122, and the second nuts 123 are arranged in two groups spaced apart vertically, with each group including two connecting lugs 620, strip-shaped holes 111, the bolts 120, the first nuts 122, and the second nuts 123 spaced apart horizontally. The connecting lugs 620 are arranged at the four corners of the encoder 600 housing.

[0048] In a further embodiment of the present invention, a notch 622 is provided on the upper side of the connecting hole 621 on the upper connecting ear 620, and a notch 622 is provided on the lower side of the connecting hole 621 on the lower connecting ear 620. In this way, when disassembling, the encoder 600 can be disassembled without completely removing the second nut 123. When disassembling, the first nut 122 and the outermost second nut 123 are loosened, and then the bolt 120 can slide up and down so that the bolt 120 is separated from the connecting hole 621 from the notch 622, completing the disassembly and facilitating subsequent reinstallation.

[0049] Reference Figure 4 In some embodiments of the present invention, a connector 611 is provided at one end of the transmission shaft 610 facing the output operating shaft 500, and a groove 612 is provided on the end face of the connector 611. A ridge 520 embedded in the groove 612 is provided on the end face of the output operating shaft 500 facing the transmission shaft 610. Torque transmission is achieved by utilizing the cooperation between the groove 612 and the ridge 520, and can be completed without the aid of fasteners, making disassembly simple.

[0050] Reference Figure 3 and Figure 7 In some embodiments of the present invention, a limiting rod 530 is provided around the wall of the output operating shaft 500. A movable plate 130 and a limit switch 140 are mounted within the housing 100. The movable plate 130 is elastically and movably mounted within the housing 100. The limit switch 140 is located within the movable path of the movable plate 130, and the movable plate 130 is also located within the movable path of the limiting rod 530. Rotation of the limiting rod 530 drives the movable plate 130 to press the limit switch 140, which in turn cuts off power to the rotary drive mechanism 200. When no longer pressed by the limiting rod 530, the movable plate 130 automatically returns to a state separated from the limit switch 140, preventing the limit switch 140 from being pressed for an extended period of time.

[0051] Reference Figure 3 and Figure 7 In a further embodiment of the present invention, two groups of limit rods 530, travel switches 140 and movable plates 130 are provided to limit the travel of rotation in two directions, namely clockwise and counterclockwise, so as to accurately limit the rotation range of the output operating shaft 500. The two travel endpoints correspond to closing and opening, thereby avoiding continued rotation after reaching closing or opening to cause structural interference and damage.

[0052] Reference Figure 3 and Figure 7 In a further embodiment of the present invention, a reinforcing rib 531 is connected between the two limit rods 530 to improve the structural strength of the limit rod 530. Specifically, a ring is fixedly provided on the output operating shaft 500, and the limit rod 530 is provided on the ring.

[0053] Reference Figure 3 and Figure 7 In a further embodiment of the present invention, the movable plate 130 is provided with a guide rod 131. A guide block 150 is installed within the housing 100. The guide block 150 has a guide hole for the guide rod 131 to pass through, thereby guiding the movement of the movable plate 130. Multiple sets of guide rods 131 and guide holes are provided to achieve multi-position limit guidance, thereby improving the stability of the movable plate 130. An elastic member 160 is installed between the guide block 150 and the movable plate 130 to apply an elastic force to the movable plate 130, allowing the movable plate 130 to separate from the limit switch 140 when not under the action of the limit rod 530.

[0054] Reference Figure 3 and Figure 7 In a further embodiment of the present invention, the elastic member 160 is a compression spring sleeved on the guide rod 131, and the guide rod 131 provides a stable installation position for the compression spring, thereby providing a stable elastic force.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A variable speed transmission system for an isolating switch mechanism box, characterized in that: include: Box (100); The rotary drive mechanism (200) is installed in the housing (100) and has a rotatable output shaft (210); the worm (300) is connected to the output shaft (210) via a reduction transmission mechanism (400); An output operating shaft (500) is rotatably mounted on the housing (100) and partially extends out of the housing (100); a synchronously rotatable turbine (510) is provided on the portion of the output operating shaft (500) located within the housing (100); and the turbine (510) is drivingly connected to the worm (300); An encoder (600) is installed in the box (100) and can adjust the installation position vertically and horizontally; a transmission shaft (610) is connected to the encoder (600), and the transmission shaft (610) and the output operating shaft (500) are matched in a concave-convex manner so that the transmission shaft (610) and the output operating shaft (500) can rotate synchronously.

2. The variable speed transmission system for the disconnector mechanism box according to claim 1, characterized in that: A mounting frame (110) is installed in the box (100), and a vertical strip hole (111) is provided on the mounting frame (110). A bolt (120) is passed through the strip hole (111). The bolt (120) is passed through the strip hole (111) transversely and can be adjusted vertically along the strip hole (111). One end of the bolt (120) is provided with a bolt head (121), and a first nut (122) is threadedly connected to the bolt (120). and two second nuts (123), the first nut (122) and the bolt head (121) are used to clamp the mounting frame (110); the encoder (600) housing is provided with a connecting ear (620), the connecting ear (620) is provided with a connecting hole (621) for the bolt (120) to pass through, the two second nuts (123) are used to clamp the connecting ear (620), and the two second nuts (123) can be adjusted in position laterally along the bolt (120).

3. The variable speed transmission system for the disconnector mechanism box according to claim 2, characterized in that: The connecting ears (620), the strip-shaped holes (111), the bolts (120), the first nuts (122) and the second nuts (123) are all arranged in two groups spaced apart from each other.

4. The variable speed transmission system for the disconnector mechanism box according to claim 3, characterized in that: A notch (622) is provided on the upper side of the connection hole (621) on the upper connection ear (620), and a notch (622) is provided on the lower side of the connection hole (621) on the lower connection ear (620).

5. The variable speed transmission system for the disconnector mechanism box according to claim 1, characterized in that: The transmission shaft (610) is provided with a connector (611) at one end facing the output operating shaft (500), and a groove (612) is provided on the end face of the connector (611). The output operating shaft (500) is provided with a convex strip (520) embedded in the groove (612) on the end face facing the transmission shaft (610).

6. The variable speed transmission system for the disconnector mechanism box according to claim 1, characterized in that: A limiting rod (530) is provided on the peripheral wall of the output operating shaft (500); a movable plate (130) and a travel switch (140) are installed in the box (100); the movable plate (130) is elastically and movably installed in the box (100); the travel switch (140) is on the movable path of the movable plate (130); and the movable plate (130) is on the movable path of the limiting rod (530); and the limiting rod (530) can drive the movable plate (130) to press the travel switch (140) when it rotates.

7. The variable speed transmission system for the disconnector mechanism box according to claim 6, characterized in that: The limit rod (530), the travel switch (140) and the movable plate (130) are provided in two groups to limit the travel of rotation in two directions.

8. The variable speed transmission system for the disconnector mechanism box according to claim 7, characterized in that: A reinforcing rib (531) is connected between the two limiting rods (530).

9. The variable speed transmission system for the disconnector mechanism box according to claim 6, characterized in that: The movable plate (130) is provided with a guide rod (131), a guide block (150) is installed in the box body (100), the guide block (150) is provided with a guide hole for the guide rod (131) to pass through, and an elastic member (160) is installed between the guide block (150) and the movable plate (130).

10. The variable speed transmission system for the disconnector mechanism box according to claim 9, characterized in that: The elastic member (160) is a compression spring sleeved on the guide rod (131).

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