Indoor ac metal-clad movable-type switchgear small bus chamber

Abstract

The utility model discloses a small bus chamber of indoor alternating current metal armored movable type switchgear belongs to the field of electric box cabinet. Mainly include cabinet top cover, and the cabinet top cover one side is connected with the eyebrow; Small bus chamber cover, it is located cabinet top cover's top; Rotating unit, it is installed in one side of small bus chamber cover, and cabinet top cover realizes movable connection with small bus chamber cover through rotating unit; Locking unit, it is located one side of small bus chamber cover, and locking unit is used for realizing the detachable connection of cabinet top cover and small bus chamber cover. The small bus chamber of indoor alternating current metal armored movable type switchgear of the application, through the rotating unit of pin shaft hinged cooperation snap spring limit, realizes two cover stable and repeatedly dismounting, avoids component damage, promotes the reuse rate, and locking unit is driven with the cooperation of the pull ring control of the latch piece with the torsional spring, need not align the hole site and screw, can quick locking and unlocking, simplifies the operation, shortens the dismounting time.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, and in particular to the small busbar compartment of indoor AC metal-clad withdrawable switchgear. Background Technology

[0002] Indoor AC metal-clad withdrawable switchgear, as a core device in the power distribution network, is widely used in substations, industrial plants, and other places. Its small busbar compartment, as an independent compartment, is usually located on the top of the cabinet to accommodate the small busbar and wiring terminals. It is a key structure to ensure equipment control and signal transmission. The existing small busbar compartment is mainly composed of the cabinet top cover, the header, and the small busbar compartment cover. The cabinet top cover and the small busbar compartment cover are mostly connected by hinges to achieve a flip function, which facilitates the installation, wiring, and maintenance of the small busbar.

[0003] For example, the small busbar compartment of an indoor AC metal-clad withdrawable switchgear with publication number CN203660319U includes a cabinet top cover, flange, grooved brow, small busbar compartment cover, mounting strip, rivets and screws. It achieves the flipping function by replacing hinges with connectors and steel rivets while keeping the compartment strength and space unchanged, which is practical.

[0004] In practical use, the above-mentioned solution uses rivets to connect the connectors and mounting strips. This connection method is semi-permanent, and disassembly can easily damage the rivets, mounting strips, or connectors, making them difficult to reuse. Furthermore, the round hole and the second threaded hole at the brow must be aligned before screws can be tightened. During assembly, all holes must be aligned first, and then the screws tightened one by one, making the operation cumbersome and time-consuming. Disassembly requires unscrewing all the screws at the brow position before the subsequent bolts on the connectors can be removed and the cover plate moved. Therefore, a small busbar compartment needs to be designed for indoor AC metal-clad withdrawable switchgear. Utility Model Content

[0005] This utility model provides a small busbar compartment for an indoor AC metal-armored withdrawable switchgear to solve the problems of rivet connection for disassembling easily damaged parts, cumbersome and time-consuming screw connection hole alignment, and easy wear and stripping of threads due to vibration or frequent disassembly and assembly.

[0006] This utility model embodiment adopts the following technical solution: a small busbar compartment for an indoor AC metal-clad withdrawable switchgear. It includes a cabinet top cover with a header connected to one side; a small busbar compartment cover located above the cabinet top cover; a rotating unit installed on one side of the small busbar compartment cover, through which the cabinet top cover is movably connected to the small busbar compartment cover; and a locking unit located on one side of the small busbar compartment cover, used to achieve a detachable connection between the cabinet top cover and the small busbar compartment cover.

[0007] Furthermore, the rotating unit includes a pin shaft, which is connected to the small busbar chamber cover plate and is rotatably engaged with the cabinet top cover plate.

[0008] Furthermore, a retaining ring is embedded in the pin, and the pin is rotatably coupled with the connector. The retaining ring is attached to the side of the connector, and the connector is fixedly installed on the top cover of the cabinet.

[0009] Furthermore, the locking unit includes a mounting base, on which a movable shaft is movably disposed, and at one end of the movable shaft is a pin, which is movably disposed at the eyebrow.

[0010] Furthermore, a torsion spring is sleeved on the movable shaft, with one end of the torsion spring engaging with the movable shaft for a limiting fit, and the other end connected to the mounting base.

[0011] Furthermore, a pull ring is movably sleeved at one end of the movable shaft.

[0012] Furthermore, a limiting rod is provided on the surface of the movable shaft, and a limiting rod that contacts the limiting rod is provided on the mounting base.

[0013] Furthermore, two sets of the limiting rods are symmetrically arranged, and two sets of the limiting rods are arranged.

[0014] Furthermore, the two sets of limiting rods are asymmetrically distributed on the mounting base, and cooperate with the two sets of limiting rods to form a specific angular constraint range.

[0015] Furthermore, a silicone anti-slip pad is provided on the upper surface of the pin.

[0016] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects: The small busbar compartment of the indoor AC metal-armored withdrawable switchgear uses a rotating unit with a pin to achieve a movable hinge between the cabinet top cover and the small busbar compartment cover. With the axial limit of the snap ring, the connection is stable and can be repeatedly disassembled and assembled, avoiding damage to rivets, mounting strips or connectors and improving the reuse rate of components. Secondly, the locking unit adopts a torsion spring driven pin rotation alignment structure, combined with the convenient operation of the pull ring. Only by rotating the movable shaft can the pin and the eyelet be quickly locked or unlocked, without the need to align the holes one by one and screw in the screws, simplifying the operation steps and shortening the assembly and disassembly time. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0018] In the attached diagram: Figure 1This is an overall schematic diagram of the small busbar compartment of the indoor AC metal-clad withdrawable switchgear in this application; Figure 2 for Figure 1 Exploded view; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 for Figure 1 A schematic diagram of the bottom structure; Figure label: 1. Cabinet top cover; 4. Eyebrow; 6. Small busbar compartment cover; 7. Rotating unit; 71. Pin; 72. Snap ring; 8. Connector; 9. Locking unit; 91. Mounting base; 92. Movable shaft; 94. Torsion spring; 95. Pull ring; 96. Limit rod; 97. Contact rod; 98. Pin. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0021] Reference Figures 1 to 4 As shown, this utility model embodiment provides a small busbar compartment for an indoor AC metal-clad withdrawable switchgear, including a cabinet top cover 1, a small busbar compartment cover 6, a rotating unit 7, and a locking unit 9. The cabinet top cover 1 has a header 4 connected to one side, and the small busbar compartment cover 6 is located above the cabinet top cover 1. The rotating unit 7 is installed on one side of the cabinet top cover 1, and the cabinet top cover 1 is movably connected to the small busbar compartment cover 6 via the rotating unit 7. The locking unit 9 is located on one side of the small busbar compartment cover 6, and the locking unit 9 enables a detachable connection between the cabinet top cover 1 and the small busbar compartment cover 6.

[0022] In order to realize the movable connection between the cabinet top cover plate 1 and the small busbar chamber cover plate 6, the rotating unit 7 of this utility model preferably includes a pin 71, which is connected to the small busbar chamber cover plate 6 and is rotatably engaged with the cabinet top cover plate 1.

[0023] In order to ensure a stable connection between the pin 71 and the cabinet top cover 1 and to axially limit the pin 71, a retaining spring 72 is embedded on the pin 71. The pin 71 is rotated through the connector 8, and the retaining spring 72 is attached to the side of the connector 8. The connector 8 is fixedly installed on the cabinet top cover 1.

[0024] In order to achieve docking and locking of the small busbar compartment cover plate 6 and the cabinet top cover plate 1, the locking unit 9 in this utility model includes a mounting base 91, on which a movable shaft 92 is movably disposed. One end of the movable shaft 92 is provided with a pin 98, which is waist-shaped and is movably disposed through the eyebrow 4.

[0025] To ensure that the pin 98 is rotated and aligned with the insertion position of the eyebrow 4, a torsion spring 94 is sleeved on the movable shaft 92. One end of the torsion spring 94 is engaged with the movable shaft 92 for limiting, and the other end is connected to the mounting base 91. The torsion spring 94 can provide elastic torsional force to drive the movable shaft 92 to drive the pin 98 to complete precise rotation and alignment. At the same time, it provides a reset force for the movable shaft 92 after operation, ensuring a smooth cycle of insertion and unlocking actions.

[0026] The eyebrow section 4 has a U-shaped groove structure, consisting of a vertical end and two opposing horizontal ends. In the default state, the pin 98 is parallel and perpendicular to the insertion position of the eyebrow section 4. In actual use, the operator holds the movable shaft 92 and rotates the pin 98 to align it with the insertion position of the eyebrow section 4. Simultaneously, the pin 71 helps the small busbar compartment cover 6 to close onto the cabinet top cover 1. After releasing the knob force on the movable shaft 92, the movable shaft 92 returns to its initial state under the action of the torsion spring 94, and the pin 98 then contacts the horizontal bottom surface of the eyebrow section 4 in a parallel and perpendicular state.

[0027] To facilitate applying torque to the torsion spring 94 to drive the movable shaft 92 to rotate, a pull ring 95 is movably sleeved on one end of the movable shaft 92. By manipulating the pull ring 95, the movable shaft 92 can be driven to rotate, thereby allowing the torsion spring 94 to accumulate elastic torsional force.

[0028] To precisely limit the rotation angle of the movable shaft 92 and ensure that the pin 98 can be accurately aligned with the insertion position of the eyebrow 4, a limiting rod 96 is provided on the surface of the movable shaft 92, and a limiting rod 97 that contacts the limiting rod 96 is provided on the mounting base 91. The rotation stroke of the movable shaft 92 is constrained by the contact between the limiting rod 96 and the limiting rod 97.

[0029] To enhance the radial stability of the movable shaft 92 during rotation and prevent it from tilting or wobbling, two sets of limiting rods 96 and two sets of limiting rods 97 are symmetrically arranged. Through the symmetrical cooperation of the two sets of components, the rotational force is evenly distributed, further improving the rotational stability and structural reliability of the movable shaft 92.

[0030] In order to ensure that the pin 98 can be accurately aligned with the insertion position of the eyebrow 4, the two sets of limiting rods 97 are asymmetrically distributed on the mounting base 91, and cooperate with the two sets of limiting rods 96 to form a specific angle constraint range.

[0031] To enhance the stability of the pin 98 when locked with the eyebrow 4 and prevent relative sliding or loosening, a silicone anti-slip pad is provided on the upper surface of the pin 98. The anti-slip properties of the silicone material increase the contact friction between the upper surface of the pin 98 and the bottom surface of the horizontal end of the eyebrow 4, thereby improving the structural stability after locking.

[0032] Working principle: During actual closing, the pull ring 95 at one end of the movable shaft 92 is manually operated, causing the movable shaft 92 to rotate and the torsion spring 94 to accumulate elastic torsional force. At this time, the pin 98 rotates with the movable shaft 92 to correspond to the insertion position of the eyebrow 4. At the same time, with the help of the rotation of the pin 71, the small busbar compartment cover 6 is smoothly closed on the cabinet top cover 1. After releasing the pull ring 95, the torsion spring 94 releases the elastic torsional force to drive the movable shaft 92 to return to its initial state. The pin 98 then contacts the bottom surface of the horizontal end of the eyebrow 4 in a parallel and vertical state. The locking of the two is achieved through the limiting cooperation between the pin 98 and the eyebrow 4. During unlocking, the pull ring 95 is operated again to drive the movable shaft 92 to rotate, causing the pin 98 to disengage from the limiting state of the eyebrow 4. The small busbar compartment cover 6 can then be opened by rotating the pin 71. Throughout the process, the reset function of the torsion spring 94 and the angle constraint cooperation of the limiting rod 96 and the limiting rod 97 ensure the smoothness, accuracy and reliability of the insertion and unlocking actions.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. The small busbar compartment of an indoor AC metal-clad withdrawable switchgear, characterized in that: Includes a cabinet top cover (1), with an eyebrow (4) connected to one side of the cabinet top cover (1); a small busbar compartment cover (6), which is located above the cabinet top cover (1); a rotating unit (7), which is installed on one side of the small busbar compartment cover (6), and the cabinet top cover (1) is movably connected to the small busbar compartment cover (6) through the rotating unit (7); and a locking unit (9), which is located on one side of the small busbar compartment cover (6), and the locking unit (9) is used to realize the detachable connection between the cabinet top cover (1) and the small busbar compartment cover (6); The locking unit (9) includes a mounting base (91), on which a movable shaft (92) is movably disposed, and at one end of the movable shaft (92) is a pin (98), which is movably disposed in the eyebrow (4); A torsion spring (94) is sleeved on the movable shaft (92). One end of the torsion spring (94) is limited to the movable shaft (92), and the other end is connected to the mounting base (91).

2. The small busbar compartment of the indoor AC metal-clad withdrawable switchgear according to claim 1, characterized in that: The rotating unit (7) includes a pin (71), which is connected to the small busbar chamber cover plate (6) and rotates with the cabinet top cover plate (1).

3. The small busbar compartment of the indoor AC metal-clad withdrawable switchgear according to claim 2, characterized in that: A retaining ring (72) is embedded in the pin (71). The pin (71) is rotated through the connector (8). The retaining ring (72) is attached to the side of the connector (8). The connector (8) is fixedly installed on the top cover plate (1) of the cabinet.

4. The small busbar compartment of the indoor AC metal-clad withdrawable switchgear according to claim 1, characterized in that: A pull ring (95) is movably sleeved at one end of the movable shaft (92).

5. The small busbar compartment of the indoor AC metal-clad withdrawable switchgear according to claim 4, characterized in that: The surface of the movable shaft (92) is provided with a limiting rod (96), and the mounting base (91) is provided with a limiting rod (97) that contacts the limiting rod (96).

6. The small busbar compartment of the indoor AC metal-clad withdrawable switchgear according to claim 5, characterized in that: Two sets of the limiting rods (96) are symmetrically arranged, and two sets of the limiting rods (97) are arranged.

7. The small busbar compartment of the indoor AC metal-clad withdrawable switchgear according to claim 6, characterized in that: The two sets of limiting rods (97) are asymmetrically distributed on the mounting base (91) and cooperate with the two sets of limiting rods (96) to form a specific angular constraint range.

8. The small busbar compartment of the indoor AC metal-clad withdrawable switchgear according to claim 1, characterized in that: The upper surface of the pin (98) is provided with a silicone anti-slip pad.

Images