A manual opening and closing device for a disconnector contactor

Abstract

The application belongs to the field of isolator auxiliary devices, and specifically discloses a manual opening and closing device for isolator breaker, which comprises a transmission rod body, an inside of the transmission rod body is provided with a placement cavity extending along an axial direction, the placement cavity extends to a rear end of the transmission rod body to form an opening; a motor base is detachably installed at a front end of the transmission rod body, the motor base is provided with a clamping groove for clamping and adapting to a motor output shaft to be driven; a rotary handle is detachably installed at the rear end of the transmission rod body and is connected with the motor output shaft through the transmission rod body; and the rotary handle can be accommodated in the placement cavity. Through the structural design, the motor base can be replaced to adapt to the motor output shaft of different types of isolators, so that one set of device can replace multiple special tools, the device versatility can be improved, and the placement cavity for accommodating the rotary handle is arranged in the transmission rod body, the storage space of the device is reduced, and the device is convenient to carry and operate on site.

Description

Technical Field

[0001] This application belongs to the field of auxiliary devices for disconnecting switches, and more specifically, relates to a manual opening and closing device for disconnecting switch disconnectors. Background Technology

[0002] In power systems, disconnect switches are key devices for achieving safe isolation of electrical circuits. Their disconnectors frequently need to perform opening / closing operations during commissioning, maintenance, or fault handling. Disconnect switches typically include manual and electrically controlled types. Electrically controlled disconnect switches primarily rely on an electric mechanism for operation, where the motor's output torque is transmitted to the disconnector's main shaft via a reduction gear to complete the opening / closing action. However, when the electric mechanism fails to provide power due to control circuit faults, power outages, or motor damage, the disconnector loses its power source, necessitating the use of manual tools for emergency opening / closing.

[0003] In related technologies, manual switching tools are typically designed for the motors of specific disconnector switch models. These tools drive the motor's output shaft to rotate, which in turn rotates the switch's main shaft to achieve the switching action. Therefore, the mechanical parameters of the manual switching tool must be strictly matched to the corresponding motor output shaft, making it non-universal. When multiple models of disconnectors are configured in the same project, multiple sets of dedicated manual tools are required, increasing tool procurement costs and occupying more space during storage. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a manual opening and closing device for disconnecting switches, aiming to solve the problem that existing manual opening and closing tools for disconnecting switches are only compatible with the motor interfaces of specific disconnecting switch models and lack universality.

[0005] This application provides a manual opening and closing device for a disconnecting switch, specifically comprising:

[0006] The transmission rod body has an axially extending placement cavity inside, which extends to the rear end of the transmission rod body to form an opening;

[0007] A motor mount is detachably mounted on the front end of the transmission rod body, and the motor mount has a slot for engaging with the output shaft of the motor to be driven.

[0008] A rotating handle is detachably mounted at the rear end of the transmission rod body and connected to the motor output shaft via the transmission rod body to drive the motor output shaft and the knife switch to rotate; the rotating handle can be stored in the placement cavity from the opening.

[0009] Compared with the prior art, the above-described technical solution conceived in this application achieves a modular, retractable, and universal design by making the motor base, rotating handle, and transmission rod body detachably connected and by providing a storage cavity for the rotating handle within the transmission rod body. This allows the manual opening and closing device to be adapted to the motor output shafts of different models of disconnecting switches simply by replacing the motor base. As a result, one device can replace multiple sets of special tools, thereby improving the device's versatility, reducing procurement costs, minimizing storage space, and facilitating on-site carrying and operation.

[0010] As a further preferred embodiment, a protrusion is coaxially fixedly connected to the front end of the transmission rod body, and the protrusion is polygonal along a cross section perpendicular to the axis; a slot adapted to be inserted into the protrusion is provided on the motor base.

[0011] As a further preferred embodiment, the protrusion is provided with a limiting component to prevent the motor seat from axially slipping off.

[0012] As a further preferred embodiment, the outer peripheral wall of the protrusion is provided with a mounting groove; the limiting component includes:

[0013] A spring, one end of which is fixedly connected to the bottom wall of the mounting groove;

[0014] A spherical component, which is fixedly connected to the other end of a spring and partially protrudes from the mounting groove under the action of elastic force;

[0015] The inner wall of the slot of the motor base is provided with a limiting groove. After the motor base is installed, the spring pushes the spherical part to embed into the limiting groove.

[0016] As a further preferred embodiment, the manual opening and closing device further includes a connecting seat, one end of which has a connecting groove adapted to the rear end of the transmission rod body, and the other end has a through hole that communicates with the placement cavity through the connecting groove. The rotating handle is connected to the transmission rod body through the connecting seat.

[0017] As a further preferred embodiment, the outer periphery of the rear end of the transmission rod body is provided with a plurality of anti-slip protrusions extending axially, and the inner wall of the connecting groove is provided with a plurality of anti-slip grooves that are adapted to be inserted into the anti-slip protrusions.

[0018] As a further preferred embodiment, the rotary handle includes a rod and a handle, one end of the rod is hinged to the handle, and the other end is fixedly connected to a fixing block. A fixing groove for the fixing block to be inserted is provided on the side wall of the connecting seat.

[0019] As a further preferred embodiment, the rotary handle also includes an anti-slip sleeve that covers the outside of the handle body.

[0020] As a further preferred embodiment, the rod can pass through the perforation into the placement cavity, and the anti-slip sleeve at one end near the rod is threaded or magnetically engaged with the connecting seat.

[0021] As a further preferred embodiment, the manual disengagement device also includes a protective sleeve fitted over the outside of the transmission rod body.

[0022] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages:

[0023] 1. This application sets the motor base and the transmission rod body as a detachable connection structure. Only the motor base needs to be replaced to match the motor output shaft of different models of disconnect switches, thereby driving the main shaft of the disconnect switch knife switch of different models to rotate to realize the opening / closing action of the knife switch. One set of devices replaces multiple sets of special tools, improves the versatility of the device, and significantly reduces procurement and maintenance costs.

[0024] 2. This application sets a detachable connection structure between the rotary handle and the transmission rod body. After the rotary handle is detached, it can be stored in the placement cavity from the rear opening of the transmission rod, thereby realizing tool storage and effectively saving tool storage space.

[0025] 3. The motor base and rotary handle in this application have a simple structure and are easily installed and removed from the transmission rod body by simply inserting and pulling them out. This effectively improves the installation and removal efficiency of the device, thereby reducing labor intensity and increasing work efficiency. Attached Figure Description

[0026] Figure 1 This is a first-view overall structural diagram of the manual opening and closing device provided in the embodiments of this application in its usage state;

[0027] Figure 2 This is a second-view overall structural diagram of the manual opening and closing device provided in the embodiments of this application in its usage state;

[0028] Figure 3 yes Figure 1 or Figure 2 A schematic diagram of the cross-sectional structure;

[0029] Figure 4 This is a schematic diagram of the overall structure of the manual opening and closing device in its stored state, as provided in the embodiments of this application.

[0030] Figure 5 This is a schematic diagram of the overall structure of the transmission rod body provided in the embodiments of this application;

[0031] Figure 6 This is a schematic diagram of the overall structure of the motor mount provided in an embodiment of this application;

[0032] Figure 7This is a schematic diagram of the cross-sectional structure of the protrusion provided in an embodiment of this application;

[0033] Figure 8 This is a schematic diagram of the overall structure of the connector provided in the embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the overall structure of the rotary handle provided in the embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the cross-sectional structure of the fixing block provided in the embodiment of this application.

[0036] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0037] 1. Transmission rod body; 11. Placement cavity; 12. Protrusion; 121. Mounting groove; 13. Limiting component; 131. Spring; 132. Spherical part; 14. Anti-slip protrusion; 2. Motor base; 21. Slot; 22. Slot; 23. Limiting groove; 3. Rotating handle; 31. Rod body; 32. Handle body; 33. Fixing block; 34. Anti-slip sleeve; 4. Connecting seat; 41. Connecting groove; 42. Through hole; 43. Anti-slip groove; 44. Fixing groove; 5. Protective sleeve. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0039] Reference Figures 1-4 The manual opening and closing device for disconnecting switch knife switch disclosed in this application includes components such as transmission rod body 1, motor base 2, rotary handle 3, connecting seat 4 and protective sleeve 5. All components are detachably connected. Through modular design, it realizes the synergistic optimization of quick disassembly and assembly, portable storage and improved versatility.

[0040] In this embodiment, the transmission rod body 1 is a hollow tubular component with an axially oriented placement cavity 11 inside. The placement cavity 11 extends to the rear end and passes through to form an opening. The rotating handle 3 can be stored in the placement cavity 11 from the opening to reduce the space occupied by the manual opening and closing device when stored. A protrusion 12 is coaxially fixedly connected to the front end of the transmission rod body 1. The protrusion 12 is polygonal along a cross section perpendicular to the axis, and can be a regular hexagon, square, equilateral triangle, etc., for quick insertion with the motor base 2. A limiting component 13 is provided on the protrusion 12 to prevent the motor base 2 from axially slipping off. At the same time, a mounting groove 121 for installing the limiting component 13 is opened on the outer peripheral wall of the protrusion 12. Specifically, the limiting component 13 includes a spring 131 and a spherical part 132. The spring 131 and the spherical part 132 are installed in the mounting groove 121 in sequence. One end of the spring 131 is fixedly connected to the bottom wall of the mounting groove 121, and the spherical part 132 is fixedly connected to the other end of the spring 131 and partially protrudes out of the mounting groove 121 under the action of elastic force.

[0041] Reference Figures 5-7 Specifically, the motor base 2 is integrally cast from a high-strength material and is detachably installed at the front end of the transmission rod body 1. The front end of the motor base 2 has a slot 21 for engaging with the output shaft of the motor to be driven; this slot can be hexagonal, double-flat, or star-shaped. The rear end has a slot 22 for engaging with the protrusion 12. A limiting groove 23 is provided on the inner wall of the slot 22. After the motor base 2 is installed, the spring 131 pushes the spherical part 132 into the limiting groove 23, thus preventing the motor base 2 from axially slipping out. During assembly, the motor base 2 is simply pushed axially into the protrusion 12, and the spherical part 132 automatically engages with the limiting groove 23 under the force of the spring 131, thus locking it in place. Axial pulling unlocks and replaces the part. The entire process requires no screws or additional tools, making it convenient and efficient. In addition, in this embodiment, the slot 21 on the motor base 2 can also be adapted to the main shaft of the knife switch of the manual disconnector, that is, the manual opening and closing device can realize the opening / closing of the knife switch of the manual disconnector.

[0042] Reference Figure 8 More specifically, one end of the connecting seat 4 is provided with a connecting groove 41 that is adapted to be inserted into the rear end of the transmission rod body 1, and the other end is provided with a through hole 42 that communicates with the connecting groove 41. The through hole 42 communicates with the placement cavity 11 through the connecting groove 41. The rotating handle 3 can be inserted into the placement cavity 11 through the through hole 42. The rotating handle 3 is connected to the transmission rod body 1 through the connecting seat 4. Several anti-slip protrusions 14 extending axially are provided on the outer periphery of the rear end of the transmission rod body 1. Several anti-slip grooves 43 that are adapted to be inserted into the anti-slip protrusions 14 are provided on the inner wall of the connecting groove 41 to prevent the connecting seat 4 from rotating circumferentially.

[0043] Reference Figures 9-10Furthermore, the rotary handle 3 is detachably installed at the rear end of the transmission rod body 1 and connected to the motor output shaft through the transmission rod body 1 to drive the motor output shaft and the knife switch to rotate. Since the existing electric control disconnect switch knife switch drive mainly relies on the operation of the electric mechanism, the motor output torque is transmitted to the knife switch main shaft through the reduction device to complete the opening / closing action. When the electric mechanism fails, the motor output shaft cannot rotate by itself. At this time, the motor output shaft is manually driven to rotate, thereby realizing the rotation of the knife switch. After the rotary handle 3 is installed, the manual opening and closing device forms a Z-shape. The transmission rod body 1 is driven to rotate by rotating the rotary handle 3, thereby driving the motor output shaft to rotate. The rotating handle 3 includes a rod 31, a handle 32, and an anti-slip sleeve 34. The front end of the rod 31 is integrally formed with a fixing block 33 for inserting into a fixing groove 44 on the side wall of the connecting seat 4. The fixing block 33 has grooves on both sides, and the grooves are equipped with the same structure as the limiting component 13 mentioned above, that is, a spring 131 and a ball part 132 are installed. Meanwhile, the fixing groove 44 has recesses on both sides, thereby further improving the connection stability of the fixing block 33 after it is inserted into the fixing groove 44. The rear end of the rod 31 is hinged to the handle 32. Specifically, the rear end of the rod 31 is connected to the handle 32 by a fixing pin and is limited by a disc spring and a snap spring. The anti-slip sleeve 34 covers the outside of the handle 32. The anti-slip sleeve 34 is made of rubber or TPU material and has a knurled surface to improve grip. The rod 31 can pass through the through hole 42 into the placement cavity 11, and the anti-slip sleeve 34 is threaded or magnetically engaged with the connecting seat 4 at one end near the rod 31. When storing the rotating handle 3, the rod 31 is inserted into the placement cavity 11 through the through hole 42 of the connecting seat 4, and the sleeve 34 is connected to the connecting seat 4 to prevent the rotating handle 3 from falling off. Specifically, the anti-slip sleeve 34 is provided with an external thread at one end near the rod 31, which can be screwed into the internal thread at the through hole 42 of the connecting seat 4. Alternatively, a magnetic ring can be used to achieve quick adsorption and positioning between the anti-slip sleeve 34 and the connecting seat 4.

[0044] Furthermore, the protective sleeve 5 can be directly fitted onto the outside of the transmission rod body 1, with a gap between the protective sleeve 5 and the transmission rod body 1, allowing for relative rotation. A limit ring is integrally formed on the outer circumference of the front end of the transmission rod body 1, and the area between the limit ring and the connecting seat 4 constitutes the area for installing the protective sleeve 5. The protective sleeve 5 can protect the transmission rod body 1 and prevent bumps during handling. The surface of the protective sleeve 5 is provided with anti-slip texture and also serves as a hand grip.

[0045] When using the manual opening and closing device of this application, select the motor base 2 corresponding to the slot 21 according to the model of the disconnect switch to be operated, insert it into the protrusion 12 for locking, then take out the rotating handle 3 from the placement cavity 11, that is, pull out the rod 31 from the placement cavity 11, unfold the handle 32, insert the fixing block 33 into the fixing groove 44, align the slot 21 with the motor output shaft and put it in, and rotate the handle 32 clockwise or counterclockwise to open or close the switch.

[0046] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0047] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A manual opening and closing device for a disconnector blade, characterized in that include: The transmission rod body (1) has an axially extending placement cavity (11) inside, which extends to the rear end of the transmission rod body (1) to form an opening; Motor base (2), the motor base (2) is detachably installed at the front end of the transmission rod body (1), and the motor base (2) is provided with a slot (21) for engaging and adapting with the output shaft of the motor to be driven; A rotating handle (3) is detachably mounted on the rear end of the transmission rod body (1) and connected to the motor output shaft through the transmission rod body (1) to drive the motor output shaft and the knife switch to rotate; the rotating handle (3) can be stored in the placement cavity (11) from the opening.

2. A manual opening and closing device for a disconnector switch according to claim 1, characterized in that The front end of the transmission rod body (1) is coaxially fixedly connected to a protrusion (12), and the protrusion (12) is polygonal along a cross section perpendicular to the axis; the motor base (2) is provided with a slot (22) that is compatible with the protrusion (12).

3. A manual opening and closing device for a disconnector switch according to claim 2, characterized in that The protrusion (12) is provided with a limiting component (13) to prevent the motor base (2) from axially slipping.

4. A manual opening and closing device for a disconnector switch according to claim 3, characterized in that The outer peripheral wall of the protrusion (12) is provided with a mounting groove (121); the limiting component (13) includes: A spring (131), one end of which is fixedly connected to the bottom wall of the mounting groove (121); A spherical component (132) is fixedly connected to the other end of a spring (131) and partially protrudes from the mounting groove (121) under the action of elastic force; The inner wall of the slot (22) of the motor base (2) is provided with a limiting groove (23). When the motor base (2) is installed, the spring (131) pushes the spherical part (132) to be embedded in the limiting groove (23).

5. A manual opening and closing device for a disconnector switch according to claim 1, characterized in that The manual opening and closing device also includes a connecting seat (4). One end of the connecting seat (4) is provided with a connecting groove (41) that is compatible with the rear end of the transmission rod body (1). The other end is provided with a through hole (42) and communicates with the placement cavity (11) through the connecting groove (41). The rotating handle (3) is connected to the transmission rod body (1) through the connecting seat (4).

6. A manual opening and closing device for a disconnector switch according to claim 5, characterized in that The outer periphery of the rear end of the transmission rod body (1) is provided with a number of anti-slip protrusions (14) extending axially, and the inner wall of the connecting groove (41) is provided with a number of anti-slip grooves (43) that are adapted to be inserted into the anti-slip protrusions (14).

7. A manual opening and closing device for a disconnector switch according to claim 5, characterized in that The rotating handle (3) includes a rod (31) and a handle (32). One end of the rod (31) is hinged to the handle (32), and the other end is fixedly connected to a fixing block (33). A fixing groove (44) for the fixing block (33) to be inserted is provided on the side wall of the connecting seat (4).

8. A manual opening and closing device for a disconnector switch according to claim 7, characterized in that The rotating handle (3) also includes an anti-slip sleeve (34), which covers the outside of the handle body (32).

9. A manual opening and closing device for a disconnector switch according to claim 8, characterized in that The rod (31) can pass through the perforation (42) into the placement cavity (11), and the anti-slip sleeve (34) is threaded or magnetically engaged with the connecting seat (4) at one end near the rod (31).

10. A manual opening and closing device for a disconnector switch according to claim 1, characterized in that The manual on-off device further comprises a protective sleeve (5) sleeved outside the transmission rod body (1).

Images