WO2016197504A1

WO2016197504A1 - Knife switch lock of power switch cabinet

Info

Publication number: WO2016197504A1
Application number: PCT/CN2015/092260
Authority: WO
Inventors: 朱子毅
Original assignee: 朱子毅
Priority date: 2015-06-11
Filing date: 2015-10-20
Publication date: 2016-12-15
Also published as: CN104882310A

Abstract

A knife switch lock (1) of a power switch cabinet, comprising a housing (6) and a lock shaft (10). The lock shaft (10) is drawn in a lock shaft hole provided in the housing (6). A displacement sensor (13) for sensing displacement of the lock shaft is disposed on the side wall of the lock shaft hole. The lock shaft (10) is provided with a pin hole. An electromagnet (11) corresponding to the pin hole is provided with an elastic core shaft. A computer key determines and controls pop-up and pullback of the elastic core shaft by means of a received signal. The knife switch lock (1) of the power switch cabinet can prevent accidents caused by loaded opening of a knife switch, thus avoiding economic losses caused by power outage unexpected by a customer.

Description

Specification Name of Invention: A knife lock for power switch cabinets

[0001] The present invention relates to the field of safety operation limiting devices for power distribution cabinets in the power industry, and in particular to a knife lock for a power shut-off cabinet.

Background technique

[0002] At present, most of the locks used in power switch cabinet latch locks on the market are classified into pure mechanical type and microcomputer type hanging lock type.

The pure mechanical lock program is fixed, the operation is not flexible, only the fixed operation mode can be grasped, the lock is easy to aging and rust, the key is easy to jam, and the microcomputer is in the form of a padlock. It is through the computer simulation operation process, downloading the operation ticket, on-site operation, system operation. Convenient and flexible, but the lock is not fixedly installed, and it is prone to misalignment or empty travel.

technical problem

[0003] The object of the present invention is to provide a knife lock for a power switchgear in order to completely solve the above-mentioned deficiencies, and to prevent an accident with a load puller.

Problem solution

Technical solution

[0004] In order to achieve the above object, a knife lock of a power switch cabinet is designed, comprising a housing and a lock shaft, wherein the lock shaft is pulled in a lock shaft hole provided in the housing, wherein the lock shaft is a recess is arranged on the back, and a positioning pin provided on the housing cooperates with the groove, and a side wall of the lock shaft hole is provided with a displacement sensor for sensing the displacement of the lock shaft; the lock shaft is provided with a pin hole corresponding to the pin hole The electromagnet is provided with an elastic mandrel; the computer key judges the ejection and pullback of the elastic mandrel by the transmitted signal, and the displacement sensor determines the drawing position of the lock shaft by the displacement of a predetermined position on the lock shaft. The lock shaft is provided with two pin holes, and the electromagnet is further provided with a Hall for detecting a position of ejecting or pulling back of the mandrel, and the shell is fixed to the splint of the knife gate by a connecting bolt The lock shaft is inserted into the knife gate through the mounting clamp to control the switching operation of the knife gate, and the computer key is inserted into the locking device through the connector.

Advantageous effects of the invention

Beneficial effect [0005] The invention can prevent an accident with a load broach brake, and avoid accidental power failure of the customer, thereby causing economic loss. The lock function is installed in the switchgear handle of the switch cabinet, and is used for controlling the opening and closing and the state of the detecting knife. The lock can be released by the suction of the electromagnet to operate the knife handle. The lock has the function of detecting the state of the device and the state of the lock. The computer key can determine whether the device is in operation according to the state of the lock of the device. The lock has a position detection function through Hall. The sensor can detect the position of the device and the position of the lock, and communicate with the computer key. The computer key can judge the operation logic of the lock according to the state of the lock device, and the lock is fixedly installed to avoid the trip.

Brief description of the drawing

DRAWINGS

[0006] Figure 1 is a schematic diagram of the assembly of the knife lock and the knife gate

2 is a schematic structural view of the present invention

Figure 3 is a schematic view of the closing position

4 is a schematic view of a trip position

[0010] FIG. 5 is a schematic diagram of the cooperation of the lock and the knife gate during the opening

[0011] FIG. 6 is a schematic diagram of the cooperation of the lock and the knife gate when closing

[0012]

[0013] In the figure: 1, knife lock 2, splint A 3, splint B 4, knife gate 5, mounting plate 6, housing 7, preset position 8, end cover 9, connecting bolt 10, lock shaft 11. Electromagnet 12, sensor 13, displacement sensor 14, hand wheel 15, connector 16, side cover 17, positioning pin.

BEST MODE FOR CARRYING OUT THE INVENTION

[0014] As shown in the figure, a knife lock of a power switch cabinet includes a housing 6 and a lock shaft 10, and the lock shaft 10 is pulled in a lock shaft hole provided in the housing 6, and the lock shaft 10 has a pre-load. Positioning point 7, the side wall of the lock shaft hole is provided with a displacement sensor 13 for sensing the displacement change of the preset position point 7; the lock shaft 10 is provided with a pin hole, and an elastic mandrel is disposed at a position corresponding to the pin hole; The key judges to control the ejecting and pulling back of the elastic mandrel by the transmitted signal. The back of the lock shaft 10 is provided with a groove, and the positioning pin 17 provided by the casing 6 cooperates with the groove, and the displacement sensor passes the judgment. The displacement of the position point 7 is preset to detect the pulling position of the lock shaft 10. The lock shaft 10 is provided with two pin holes, and the electromagnet 11 is further provided with a sensor 12 for detecting the ejection of the mandrel or Pull In the return position, the housing 6 is fixed to the clamping plate of the knife gate 4 via a connecting bolt 9, and the locking shaft 10 is inserted into the knife gate 4 through the mounting clamp to control the switching operation of the knife gate 4, and the computer key passes The connector 15 is inserted into the locking device.

[0015] The knife gate is mounted on the mounting plate 5, the knife lock 1 is mounted on the clamping plate A2 by the connecting bolt 9, the knife gate 4 is also clamped by the other clamping plate B3, and the back of the locking shaft is provided with a groove, a shell The positioning pin 17 provided in the body 6 cooperates with the groove, and the groove is used to define the pulling stroke of the lock shaft.

[0016] The device is mainly used for powering down the switch cabinet, as shown in FIG. 3, when the knife gate 4 is pushed upward, the device is in a power transmission state, and when the knife gate 4 is pulled down as shown in FIG. 4, the device is powered off. State, if the device is powered to pull the brakes, the equipment will be damaged, and the customer accidentally loses power and cause economic loss. The locking device is used to control the separation of the knife gate 4. The locking device is controlled by the computer key, and the computer key is based on the previous one. By locking the state of the lock and the equipment through logic, the lock can be opened by satisfying the condition, the knife gate 4 is operated, the knife gate is locked again, and the condition is turned on again.

[0017] The knife lock 1 is fixedly fixed to the 9-clamp A2 through the connecting bolt at the front end, and the device cutter is controlled by the push-in and pull-out of the lock shaft 10, and the back of the lock shaft 10 has a groove through the positioning pin 17 and the groove Cooperating to realize the lateral pulling of the lock shaft, one side of the lock shaft 10 has a displacement sensor 13, and the lock shaft 10 has a preset position point 7, and the position of the lock shaft 10 is detected by the displacement variation value of the preset position point 7. When the lock shaft 10 is pulled to a certain position, the mandrel of the electromagnet 11 will pop out, and the lock shaft 10 is locked, so that the lock shaft 10 cannot be pulled to reach the locking device, and the detection signal in the lock will pass through the connector 15 The computer key is transmitted, and the computer key is transmitted to the electromagnet through the connector 15 according to the logic to control the ejection or retraction of the electromagnet core. The sensor 12 at the rear end of the electromagnet 11 is used to detect the state of the electromagnet core.

[0018] When the device needs to be powered, the knife gate 4 has been locked in the opening position as shown in FIG. 4 and FIG. 5, at which time the computer key is inserted into the locking device through the connector 15, and the computer key first detects the state of the lock through the Hall element, and The state of the device is detected by the sensor 12 whether the electromagnet core is in the pop-up or pull-back position. If it is in the pop-up position, it is determined that the lock is in the locked state; then the displacement sensor 13 determines the state of the device, and the displacement value is determined. The half stroke position, in order to judge the device in the opening position, to meet the power transmission condition, the computer key will send a signal to the electromagnet, and the electromagnet core shaft is pulled back. At this time, the operator operates the hand wheel 14 to pull out the lock shaft 10, and the knife gate is opened. Push to the power transmission position, push the lock shaft 10, according to the displacement value change, the computer key judges the lock in place, sends a signal to the electromagnet, ejects the mandrel, locks the lock shaft 10, and completes the power transmission process. [0019] The lock further includes an end cover 8 and a side cover 16 for protecting internal components.

[0020] It should be noted that the above embodiments are merely preferred embodiments of the present invention, and those skilled in the art will have any equivalent or similar substitutions in accordance with the working principle of the present invention. The scope of protection of the invention.

Invention embodiment

Embodiments of the invention

[0021] The description paragraphs of the embodiments of the present invention are entered here.

Industrial applicability

[0022] Enter the paragraph of industrial applicability description here.

Sequence table free content

[0023] Type the sequence table free content description paragraph here.

Claims

Claim

A knife lock of a power shut-off cabinet, comprising a housing and a lock shaft, wherein the lock shaft is pulled in a lock shaft hole provided in the housing, wherein the back of the lock shaft is provided with a groove, the shell The positioning pin is matched with the groove, the side wall of the lock shaft hole is provided with a displacement sensor for sensing the displacement of the lock shaft; the lock shaft is provided with a pin hole, and the electromagnet corresponding to the pin hole is provided with an elastic mandrel; The computer key judges the ejection and pullback of the elastic mandrel by the transmitted signal.

The knife lock of a power switch cabinet according to claim 1, wherein the displacement sensor determines the pull position of the lock shaft by displacement of a predetermined position on the lock shaft according to claim 1. A knife lock of a power switch cabinet is characterized in that the lock shaft is provided with _two pin holes.

A knife lock for a power switchgear according to claim 1, wherein said electromagnet is further provided with a sensor for detecting a position at which the mandrel is ejected or pulled back. A knife lock for a power switchgear according to claim 1, wherein said housing is fixed to the clamp of the knife gate by a connecting bolt.

A knife lock of a power switchgear according to claim 1, wherein the lock shaft is inserted through the mounting clamp to control the opening and closing operation of the knife gate.

A knife lock for a power switchgear according to claim 1, wherein said computer key is inserted into the latching means through the connector.