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CN-224233136-U - Quick assembly disassembly structure to fuse, current sensor

CN224233136UCN 224233136 UCN224233136 UCN 224233136UCN-224233136-U

Abstract

The utility model discloses a quick dismounting structure for a fuse and a current sensor, which comprises a unit frame and a main circuit copper bar, wherein the unit frame is detachably connected with an electric cabinet, the main circuit copper bar is arranged on the unit frame, two ends of the main circuit copper bar are respectively provided with an external contact for connecting an external electric component of the electric cabinet and an internal contact for connecting the electric component of the electric cabinet, the unit frame is fixedly provided with a terminal block, the external contact is arranged on the terminal block, the internal contact is positioned at one end of the unit frame close to the terminal block, the main circuit copper bar comprises an input copper bar and an output copper bar, the fuse and the current sensor are connected on the input copper bar in series, and the fuse and the current sensor are arranged on the unit frame. The unit frame can be integrally inserted into or pulled out from the electrical cabinet, maintenance work can be completed outside the cabinet and is not limited by the space in the cabinet, wiring and disconnecting work can be performed in an area without shielding, the operation is simple and convenient and quick, and the electrical cabinet does not need to reserve a large amount of space for maintenance.

Inventors

  • WANG TIANXIANG

Assignees

  • 大连东芝机车电气设备有限公司

Dates

Publication Date
20260512
Application Date
20250529

Claims (6)

  1. 1. The quick dismounting structure for the fuse and the current sensor is characterized by comprising a unit frame (1) and a main circuit copper bar, wherein the unit frame (1) is detachably connected with an electric cabinet, the main circuit copper bar is arranged on the unit frame (1), two ends of the main circuit copper bar are respectively an external contact for connecting an external electric component of the electric cabinet and an internal contact for connecting the electric component of the electric cabinet, a terminal table (5) is fixedly arranged on the unit frame (1), the external contact is arranged on the terminal table (5), and the internal contact is positioned at one end, close to the terminal table (5), of the unit frame (1); The main loop copper bar comprises an input copper bar (21) and an output copper bar (22), wherein a fuse (3) and a current sensor (4) are connected in series on the input copper bar (21), and the fuse (3) and the current sensor (4) are arranged on the unit frame (1).
  2. 2. The quick assembly disassembly structure for the fuse and the current sensor according to claim 1, wherein a fixing plate (6) and a guide tube (7) are fixedly arranged on the unit frame (1), the fixing plate (6) is positioned at one end of the unit frame (1) close to the terminal table (5), a through hole is formed in the fixing plate (6), and the guide tube (7) extends from one end of the unit frame (1) close to the terminal table (5) to one end far away from the terminal table (5); One end of the unit frame (1) is fixed on the electric cabinet through bolts arranged in through holes of the fixing plate (6), and the other end of the unit frame (1) is fixed on the electric cabinet through bolts arranged in through holes of the guide tube (7).
  3. 3. The quick assembly disassembly structure for a fuse and a current sensor according to claim 1, wherein a control loop connection port (8) is fixedly arranged on the unit frame (1), the control loop connection port (8) is positioned at one end, close to the terminal block (5), of the unit frame (1), and the control loop connection port (8) is electrically connected with the fuse (3) and the current sensor (4).
  4. 4. A quick release structure for a fuse and a current sensor according to claim 3, further comprising a wire bracket (10) fixed to the unit frame (1), wherein the data wires of the fuse (3) and the current sensor (4) are connected to a control loop connection port (8) through the wire bracket (10).
  5. 5. The quick assembly disassembly structure for a fuse and a current sensor according to claim 1, wherein a partition plate (51) is fixedly arranged on the terminal block (5), and the partition plate (51) is positioned between adjacent external contacts.
  6. 6. The quick assembly disassembly structure to fuse, current sensor according to claim 2, characterized by further comprising a fan (9), wherein a fan bracket for installing the fan (9) is fixedly arranged on the unit frame (1), and the wind direction of the fan (9) is parallel to the extending direction of the guide tube (7).

Description

Quick assembly disassembly structure to fuse, current sensor Technical Field The utility model relates to the technical field of locomotive electrical cabinets, in particular to a quick dismounting structure for a fuse and a current sensor. Background The current sensor and the fuse are required to be installed on the main circuit copper bar and the maintenance frequency is higher, and because the size of the current sensor and the fuse of the main circuit is larger, when overhauling and maintaining, the electric component is required to be disassembled, the main circuit copper bar is required to be disassembled, a larger operation space is required, the size specification requirement of the locomotive electrical cabinet is strict, the internal space is extremely limited, and the space available for overhauling is extremely narrow, so that the installation and maintenance operation is extremely inconvenient. Disclosure of Invention The utility model provides a quick dismounting structure for a fuse and a current sensor, so as to overcome the problems. In order to achieve the above object, the technical scheme of the present utility model is as follows: The quick dismounting structure for the fuse and the current sensor comprises a unit frame and a main circuit copper bar, wherein the unit frame is detachably connected with an electric cabinet, the main circuit copper bar is arranged on the unit frame, two ends of the main circuit copper bar are respectively provided with an external contact for connecting an external electric component of the electric cabinet and an internal contact for connecting the electric component of the electric cabinet, the unit frame is fixedly provided with a terminal block, the external contact is arranged on the terminal block, and the internal contact is positioned at one end, close to the terminal block, of the unit frame; The main loop copper bar comprises an input copper bar and an output copper bar, wherein a fuse and a current sensor are connected in series on the input copper bar, and the fuse and the current sensor are arranged on the unit frame. Further, a fixing plate and a guide tube are fixedly arranged on the unit frame, the fixing plate is positioned at one end of the unit frame close to the terminal block, a through hole is formed in the fixing plate, and the guide tube extends from one end of the unit frame close to the terminal block to one end far away from the terminal block; One end of the unit frame is fixed on the electric cabinet through a bolt arranged in the through hole of the fixing plate, and the other end of the unit frame is fixed on the electric cabinet through a bolt arranged in the through hole of the guide tube. Further, a control loop connection port is fixedly arranged on the unit frame and is positioned at one end of the unit frame close to the terminal block, and the control loop connection port is electrically connected with the fuse and the current sensor. Further, the device also comprises a wiring support fixed on the unit frame, and the fuse and the data wire of the current sensor are connected with the control loop connection port through the wiring support. Further, a partition board is fixedly arranged on the terminal block, and the partition board is positioned between adjacent external contacts. Further, the air conditioner further comprises a fan, wherein a fan bracket for installing the fan is fixedly arranged on the unit frame, and the wind direction of the fan is parallel to the extending direction of the guide pipe. The quick dismounting structure for the fuse and the current sensor has the advantages that the main circuit copper bar, the fuse, the current sensor and the terminal block are integrated on the unit frame detachably connected with the electric cabinet, so that the unit frame can be integrally inserted into or pulled out of the electric cabinet during installation and maintenance, maintenance work can be completed outside the cabinet and is not limited by space in the cabinet, and wiring and disconnecting work can be performed in a shielding-free area by arranging the external contact and the internal contact at the same end of the unit frame, the operation is simpler, more convenient and quicker, and the electric cabinet does not need to reserve a large amount of space for maintenance, thereby being beneficial to optimizing the space in the cabinet. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic structural view of a quick assembly disassembly structure fo