Handcart secondary plug interlocking device

Abstract

The utility model relates to the technical field of metal-enclosed switchgear, which is mainly applied to miniaturized removable metal-enclosed switchgear, in particular to a handcart secondary plug interlocking device, which comprises a mounting bottom plate, a socket body, a plug body, a limit ring and an interlocking rod, and is characterized in that the socket body is fixedly mounted at the bottom of the mounting bottom plate; the plug body is inserted into the socket body; the bottom of the mounting bottom plate is fixedly provided with a fixing support through a bolt, the limiting ring is welded to one end of the interlocking rod, the other end of the interlocking rod is welded to the interlocking bent plate, the interlocking bent plate is rotationally connected to the fixing support through a movable shaft, and a round hole in the interlocking bent plate is connected with a tension spring. And the other end of the tension spring is connected to the round hole of the fixed bracket. According to the utility model, the locking of the socket and the plug can be realized, the structure is compact, simple and practical, the installation is convenient, and the reliability is high.

Description

Technical Field

[0001] This utility model relates to a plug interlocking device, specifically a secondary plug interlocking device for a handcart. Background Technology

[0002] Secondary plugs and sockets of switchgear are widely used in power systems. As a circuit break point in the secondary control circuit between the switchgear and the cabinet, they must be equipped with anti-misoperation interlocks. In order to ensure sufficient operating space, some small-sized switchgear (400mm and below) needs to be equipped with small plugs and sockets. In this case, the structure of commonly used secondary plug and socket interlock devices can no longer meet the installation requirements of the cabinet and it is difficult to play the role of preventing misoperation and protection.

[0003] Therefore, it is necessary to develop an interlocking device suitable for miniaturized switchgear, which is crucial for improving the overall reliable operation of power system equipment. Utility Model Content

[0004] The main purpose of this disclosure is to solve the problem of interlocking between the secondary plug and socket and the trolley position in small switchgear, and to provide an interlocking device that is compact, simple, practical, easy to install and highly reliable.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A secondary plug interlocking device for a handcart includes a mounting base plate, a socket body, a plug body, a limiting ring, and an interlocking rod. The socket body is fixedly installed on the bottom of the mounting base plate, and the plug body is inserted into the socket body.

[0007] The bottom of the mounting base plate is fixedly mounted with bolts to a fixed bracket. The limiting ring is welded to one end of the interlocking rod, and the other end of the interlocking rod is welded to the interlocking bend plate. The interlocking bend plate is rotatably connected to the fixed bracket via a movable shaft. A tension spring is connected to the round hole on the interlocking bend plate, and the other end of the tension spring is connected to the round hole of the fixed bracket.

[0008] Preferably, a roller is mounted on the end of the interlocking bend away from the tension spring via a pin, and the roller is located below the interlocking bend.

[0009] Preferably, the fixing bracket is a semi-circular ring structure and is parallel to the secondary line side plane of the plug body.

[0010] Preferably, the fixed bracket has a guide groove, and the interlocking rod passes through the guide groove and slides within it.

[0011] Preferably, the plug body has an external wiring harness.

[0012] Preferably, the fixing bracket has a U-shaped structure, and the tension spring is always located within the U-shaped groove.

[0013] In view of this, compared with the prior art, the beneficial effects of this utility model are:

[0014] It can lock the socket plug, and has a compact structure, is simple and practical, easy to install and highly reliable. Attached Figure Description

[0015] Figure 1 The figure shown is a three-dimensional view of the structure of the handcart secondary plug interlocking device provided by this utility model;

[0016] Figure 2 As shown Figure 1 A schematic diagram after the middle limit ring has moved;

[0017] Figure 3 As shown Figure 1 A three-dimensional view of a local structure from another perspective;

[0018] Figure 4 The image shown is a 3D view of the interlocking bend plate;

[0019] Figure 5 The diagram shows the connection between the interlocking rod and the interlocking bend plate.

[0020] Figure 6 The image shown is a 3D view of the limiting ring.

[0021] icon:

[0022] 1-Mounting base plate; 2-Bolt; 3-Moving shaft; 4-Tension spring; 5-Fixed bracket; 6-Socket body; 7-Plug body; 8-Limit ring; 9-Interlocking rod; 10-Roller; 11-Pin; 12-Interlocking bend plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 The present invention provides the following embodiments:

[0025] A secondary plug interlocking device for a handcart includes a mounting base plate 1, a socket body 6, a plug body 7, a limiting ring 8, and an interlocking rod 9. The socket body 6 is fixedly installed on the bottom of the mounting base plate 1, and the plug body 7 is inserted into the socket body 6.

[0026] The bottom of the mounting base plate 1 is fastened with a fixed bracket 5 by bolts 2. The limiting ring 8 is welded to one end of the interlocking rod 9, and the other end of the interlocking rod 9 is welded to the interlocking bend plate 12. The interlocking bend plate 12 is rotatably connected to the fixed bracket 5 through the movable shaft 3. A tension spring 4 is connected to the round hole on the interlocking bend plate 12, and the other end of the tension spring 4 is connected to the round hole of the fixed bracket 5.

[0027] Specifically, a roller 10 is mounted on the end of the interlocking bend plate 12 away from the tension spring 4 via a pin 11, and the roller 10 is located below the interlocking bend plate 12.

[0028] Specifically, the fixing bracket 5 is a semi-circular ring structure and is parallel to the secondary line side plane of the plug body 7.

[0029] Specifically, the fixed bracket 5 has a guide groove, and the interlocking rod 9 passes through the guide groove and slides inside it.

[0030] Specifically, the fixed bracket 5 has a U-shaped structure, and the tension spring 4 is always located in the U-shaped groove.

[0031] Specifically, the plug body 7 has an external wiring harness.

[0032] The specific implementation of this embodiment is as follows: When the handcart is pushed to the working position, the pressure plate on the handcart contacts and presses the roller 10, the interlocking bending plate 12 is pushed and rotates backward around the movable shaft 3, and the interlocking rod 9 moves along the guide groove on the fixed bracket 5; the limiting ring 8 rotates to be parallel to the end face of the plug body 7 and locks the wire harness, so that the plug body 7 cannot be pulled off the socket body 6, and at the same time the tension spring 4 is pulled open and is in an energy storage state, so that the plug body 7 and the socket body 6 are locked together to avoid accidental contact during operation;

[0033] When the handcart is moved from the working position to the test position, the pressure plate on the handcart retracts along the roller 10, the tension spring 4 is released and retracts, the interlocking bent plate 12 is pulled by the tension spring 4 and rotates forward around the shaft 3, and the interlocking rod 9 moves along the guide groove on the fixed bracket 5; the limiting ring 8 rotates to the upper side with the interlocking rod 9, at which time the plug body 7 can be pulled off the socket body 6 to release the interlock.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A secondary plug interlocking device for a handcart, characterized in that: It includes a mounting base plate (1), a socket body (6), a plug body (7), a limiting ring (8), and an interlocking rod (9). The socket body (6) is fixedly installed on the bottom of the mounting base plate (1), and the plug body (7) is inserted into the socket body (6). The bottom of the mounting base plate (1) is fastened with a fixed bracket (5) by bolts (2). The limiting ring (8) is welded to one end of the interlocking rod (9), and the other end of the interlocking rod (9) is welded to the interlocking bend plate (12). The interlocking bend plate (12) is rotatably connected to the fixed bracket (5) through a movable shaft (3). A tension spring (4) is connected to the round hole on the interlocking bend plate (12), and the other end of the tension spring (4) is connected to the round hole of the fixed bracket (5).

2. The handcart secondary plug interlocking device according to claim 1, characterized in that: The end of the interlocking bend plate (12) away from the tension spring (4) is fitted with a roller (10) by a pin (11), and the roller (10) is located below the interlocking bend plate (12).

3. The handcart secondary plug interlocking device according to claim 1, characterized in that: The fixing bracket (5) is a semi-circular ring structure and is parallel to the secondary line side plane of the plug body (7).

4. The handcart secondary plug interlocking device according to claim 1, characterized in that: The fixed bracket (5) has a guide groove, and the interlocking rod (9) passes through the guide groove and slides inside it.

5. The handcart secondary plug interlocking device according to claim 1, characterized in that: The plug body (7) has an external wiring harness.

6. The handcart secondary plug interlocking device according to claim 3, characterized in that: The fixed bracket (5) has a U-shaped structure, and the tension spring (4) is always located in the U-shaped groove.

Images