CN-224217901-U - Distribution box

Abstract

The utility model provides a distribution box which comprises a box body, a grounding wire, grounding resistance measuring equipment and a locking device, wherein the locking device is arranged on the box body, one end of the grounding wire is connected with the box body, the other end of the grounding wire is grounded, the grounding resistance measuring equipment is connected with the grounding wire, and the locking device is connected with the grounding resistance measuring equipment.

Inventors

• SONG GUANGTAO
• TIAN JINWEI
• WANG ZHEN
• DU YUELEI
• ZHAO YANTENG
• LIU JING
• LIU JICHEN
• Sun lechang
• YU HONGBO
• LIU BAOGANG
• ZHANG YUHUA
• SUN ZHONGFA
• SUN JIANJIE
• LU WEIFANG

Assignees

• 华润风电(曹县)有限公司

Dates

Publication Date

20260508

Application Date

20250418

Claims (7)

1. 1. The distribution box is characterized by comprising a box body, a grounding wire, grounding resistance measuring equipment and a locking device, wherein the locking device is arranged on the box body, one end of the grounding wire is connected with the box body, the other end of the grounding wire is grounded, the grounding resistance measuring equipment is connected with the grounding wire, and the locking device is connected with the grounding resistance measuring equipment.
2. 2. The power distribution box according to claim 1, wherein a box door is rotatably mounted on one side of the box body, the locking device is mounted on the box body, or the locking device is mounted on the box body through the box door, and a mechanical lock is mounted on the box door or the box body.
3. 3. A power distribution box according to claim 1, characterized in that the locking means is connected to the ground resistance measuring device by means of a control device.
4. 4. A power distribution box according to claim 3, characterized in that the control device is connected to a power supply device, which is mounted in the box.
5. 5. The power distribution box according to claim 4, wherein the power supply equipment comprises a lithium battery and an external power supply adapter, a voltage stabilizing circuit and an overload protection circuit are arranged in the power supply equipment, and the lithium battery and the external power supply adapter are connected with the control equipment.
6. 6. A power distribution box according to claim 1, characterized in that the ground resistance measuring device is a four-wire ground resistance measuring device.
7. 7. The distribution box according to claim 1, wherein the locking device is an electromagnetic lock or a motor-driven lock, a motor is arranged in the motor-driven lock, an output shaft of the motor is connected with a rotating rod for mechanical unlocking, the free end of the rotating rod is exposed out of the box body or the box door, and the locking device is connected with a first switch for unlocking the electromagnetic lock or a second switch for switching the rotation direction of the motor in the motor-driven lock.

Description

Distribution box Technical Field The utility model relates to the technical field of power equipment, in particular to a distribution box. Background The movable distribution box is widely applied to occasions such as temporary power supply, construction sites and the like, and the safety of the movable distribution box is very important. Poor grounding may cause accidents such as electric shock, equipment damage, and the like. In actual construction, the situation that the movable distribution box is used without being grounded exists, the safety risk is large, and the following problems exist: 1. The automatic locking function is lacking, namely the existing distribution box door is manually locked only through a mechanical lock, and the box door cannot be prevented from being opened to use the distribution box when the grounding is poor. 2. And when the potential safety hazard is large and the grounding is poor, operators can operate by mistake, so that electric shock or equipment damage is caused. Disclosure of utility model The utility model aims to solve the technical problem of providing a distribution box aiming at the defects of the prior art. The power distribution box comprises a box body, a grounding wire, grounding resistance measuring equipment and a locking device, wherein the locking device is arranged on the box body, one end of the grounding wire is connected with the box body, the other end of the grounding wire is grounded, the grounding resistance measuring equipment is connected with the grounding wire, and the locking device is connected with the grounding resistance measuring equipment. The technical scheme has the beneficial effects that the locking device is used for locking or unlocking the box door. When the grounding resistance does not meet the requirement, the box door is locked and cannot be opened. The box door is controlled through grounding measurement, so that the distribution box is ensured to be well grounded before being used. To improve the safety of the mobile distribution box. Further, a box door is rotatably arranged on one side of the box body, the locking device is arranged on the box body, or the locking device is arranged on the box body through the box door, and a mechanical lock is arranged on the box door or the box body. The technical scheme has the beneficial effects that the locking device is arranged on the box body or the box door, so that the installation position of the locking device can be conveniently selected according to actual needs, and the locking device can be conveniently installed and maintained. The mechanical lock is used for locking the box door through the mechanical lock, preventing the box door from being randomly opened and realizing locking in operation under the condition that the grounding resistor meets the requirement in the use process of the distribution box. Further, the locking device is connected with the ground resistance measuring device through a control device. The technical scheme has the beneficial effects that the ground resistance measuring equipment is used for measuring the ground resistance value of the distribution box in real time and transmitting the measurement result to the control equipment. The control device is used for receiving data of the grounding resistance measuring device and judging whether the grounding resistance exceeds a set threshold value. And if the threshold value is not exceeded, an unlocking signal is sent. Further, a power supply device is connected to the control device, and the power supply device is installed in the box body. The power supply device has the beneficial effect that the power supply device provides stable power for the whole system. After the movable distribution box moves to the construction site, the door can be opened when the distribution box is installed through the built-in power supply equipment, and power is supplied to the grounding resistance measuring equipment and the locking device in real time. Further, the power supply device comprises a lithium battery and an external power supply adapter, wherein a voltage stabilizing circuit and an overload protection circuit are arranged in the power supply device, and the lithium battery and the external power supply adapter are connected with the control device. The power supply device has the beneficial effects that the power supply device comprises a lithium battery and an external power supply adapter, and is suitable for different use environments. The power supply equipment comprises a voltage stabilizing circuit and an overload protection circuit, so that stable operation of the system is ensured. After the movable distribution box moves to the construction site, the built-in lithium battery is used for realizing that the box door can be opened when the distribution box is installed, and supplying power to the grounding resistance measuring equipment and the locking device in real time. The external power adap