A kind of position monitoring apparatus of switch-cabinet grounding handcart
Technical field
Withdraw-type switch cabinet is the utility model is related to, is monitored particularly with regard to a kind of position of switch-cabinet grounding handcart
Device.
Background technology
AC metal armored draw out switchgear is as the capital equipment received with dividing distribution network electric energy, because of its operation side
Just the advantages that, interchangeability is good, power supply reliability is high, is able to use extensively in electric system.Wherein, in order to overhaul conveniently,
Safety, earth handcart is essential function handcart equipment, and the purpose is to ensure to prevent misdelivery electricity during maintenance or open
Equipment malfunction is closed to make and bring electric shock accidents.Extensive general earth handcart works as inlet wire busbar really not in use, only having at present
In the case of powered, handcart push-in be only it is safe and reliable, without to earth handcart or not in switchgear and whether in work
Make, the monitoring of testing position, if earth handcart, in switchgear or just in performance test position, handcart does not have position to monitor signal
To restrict the circuit breaker cart push-in on busbar in other switchgears, that is, it is possible to the breaker on busbar in other switchgears
Handcart is pushed into, and will cause maloperation that instant earthing short circuit, electric arc burn staff or starting arc fire incident occurs.And
And earth handcart conventional arrangement works in bus equipment cabinet, it is with the fuse handcart in bus equipment cabinet in same warehouse
Using, it is necessary to which the position monitoring apparatus set may conflict with fuse handcart generation.
Utility model content
Technical problem to be solved in the utility model:It is to provide a kind of simple in structure, design rationally, can safely may be used
By ground monitoring earth handcart whether in switchgear, whether work and whether testing position and feedback handcart remove switch
The status signal of cabinet, and the handcart from other switch storehouses influences, and meets that the interlocking that all switchgears are electric on busbar will
Ask, be conducive to equipment safety operation, the position monitoring apparatus for the switch-cabinet grounding handcart being easily installed.
Technical problem to be solved in the utility model can be adopted the following technical scheme that to realize:
A kind of position monitoring apparatus of switch-cabinet grounding handcart, including the ground connection hand for switching storehouse and being arranged in switch storehouse
Car, it is characterised in that pulley guide rails are provided with the switch storehouse, in the front side end of earth handcart in the pulley guide rails
Pulley is pushed before being provided with, pulley is pushed after the rear side end of earth handcart is provided with the pulley guide rails;
Press strip before being provided with the pulley guide rails below preceding pushing pulley, in described preceding press strip one end and pulley
Preceding resetting spring is provided between guide rail;
It is provided with the front end of the pulley guide rails below preceding press strip for monitoring earth handcart whether in switch storehouse
Interior state travel switch;
In the pulley guide rails after the side of preceding press strip is provided with press strip, in the rear press strip one end and pulley guide rails
Between be provided with rear resetting spring;
The operating position for monitoring earth handcart is provided with below rear press strip in the rear end of the pulley guide rails
Position travel switch.
In a preferred embodiment of the utility model, the preceding press strip, rear press strip are hinged in pulley guide rails.
Due to the adoption of the above technical scheme, the beneficial effects of the utility model are:The utility model utilizes and is installed on ground connection
Preceding pushing pulley on handcart, the rear pulley that pushes push travel switch triggering limit switch contact, can reliably monitor and instead
Present earth handcart whether in switchgear, whether work and whether testing position and feedback handcart remove switchgear shape
State signal, and the handcart from other switch storehouses influences, and meets the interlocking requirement that all switchgears are electric on busbar, favorably
In equipment safety operation, and it is simple in structure, reliable, be easily installed.
Brief description of the drawings
Fig. 1 is a kind of first state schematic diagram of switch-cabinet grounding handcart of the utility model.
Fig. 2 is a kind of second view of switch-cabinet grounding handcart of the utility model.
Fig. 3 is a kind of third state schematic diagram of switch-cabinet grounding handcart of the utility model.
Fig. 4 is a kind of structure diagram of the position monitoring apparatus of switch-cabinet grounding handcart of the utility model.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
It is a kind of position monitoring apparatus of switch-cabinet grounding handcart referring to what is shown in Fig. 1 to Fig. 4, provided in figure, including opens
Storehouse 100 is closed, earth handcart 200 and pulley guide rails 500 are provided with switch storehouse 100.
Pulley 300 is pushed before the front side end of earth handcart 200 is provided with pulley guide rails 500, in pulley guide rails 500
On after the rear side end of earth handcart 200 is provided with push pulley 400;In pulley guide rails 500 under preceding pushing pulley 300
Press strip 800 before side is hingedly provided with, resetting spring 1000 before being provided between preceding 800 one end of press strip and pulley guide rails 500;
The front end of pulley guide rails 500 is provided with state travel switch 600 in the lower section of preceding press strip 800, for monitoring that earth handcart 200 is
It is no to switch in storehouse 100;In pulley guide rails 500 after the side of preceding press strip 800 is hingedly provided with press strip 900, in rear press strip
Rear resetting spring 1100 is provided between 900 one end and pulley guide rails 500;In the rear end of pulley guide rails 500 in rear press strip 900
Lower section is provided with position travel switch 700, for monitoring the operating position of earth handcart 200.
Preceding pushing pulley 300, rear pushing pulley 400, pulley guide rails 500 and preceding press strip 800, rear press strip 900 and same switch
For other handcarts in storehouse 100 without mechanical action relevance, it only has earth handcart 200 just to have mechanical action when switching in storehouse 100
Relevance;Preceding pushing pulley 300 only by earth handcart 200 of state travel switch 600 and position travel switch 700, rear push
Pulley 400, pulley guide rails 500 and preceding press strip 800, the linkage action of rear press strip 900, ensure other handcarts with switch storehouse 100
The position monitoring of earth handcart 200 is not influenced.
A kind of operation principle of the position monitoring apparatus of switch-cabinet grounding handcart of the utility model is as follows:
It is shown in Figure 1, after earth handcart 200 is pushed into inside outside switch storehouse 100, on earth handcart 200
Preceding pushing pulley 300 by the 800 front end around hinge of preceding press strip in pulley guide rails 500 rotate down pushing before 800 rear end of press strip,
The pressure linkage under by the rear end of preceding press strip 800 of state travel switch 600, the action of 600 contact of state travel switch is so as to monitor
Earth handcart 200 is switching signal in storehouse 100;
As long as earth handcart 200 is when switching in storehouse 100, earth handcart 200 operating position, experiment in switch storehouse 100
Position or other positions, signal of the earth handcart 200 in switch storehouse 100, all the time by being pushed forward on earth handcart 200
Pressure pulley 300 by the 800 front end around hinge of preceding press strip in pulley guide rails 500 rotate down pushing before 800 rear end of press strip, keep shape
The pressure linkage under by the rear end of preceding press strip 800 of state travel switch 600, monitors the action of 600 contact of state travel switch
Signal is constant in switch storehouse 100 for earth handcart 200, ensures that state travel switch 600 exports the reliability of signal.
It is shown in Figure 2, after earth handcart 200 is pushed into inside outside switch storehouse 100, it is pushed further into operating position
When, the rear pushing pulley 400 on earth handcart 200 will push pulley 300 by the preceding pressure in pulley guide rails 500 before relay
Bar 800 keeps down pushing force, ensures that state travel switch 600 is pressurized and is lost from the upward elastic force of preceding resetting spring 1000
Remove 600 contact of state travel switch action monitoring signal;The preceding pushing pulley 300 on earth handcart 200 will be sliding at the same time
900 front end around hinge of rear press strip on wheel guide rail 500 rotates down 800 rear end of press strip before pushing, and position travel switch 700 is by rear
Pressure linkage under the rear end of press strip 900, the action of 700 contact of position travel switch is so as to monitor 200 operating position of earth handcart
Signal.Conversely, after earth handcart 200 is exited to initial position, rear 1100 decompression of resetting spring props up rear 900 rear end of press strip,
Make rear 900 front end around hinge of press strip be rotated up preceding press strip 800 to restPose, position travel switch 700 recovers so as to supervise
Depending on to 200 testing position signal of earth handcart.
It is shown in Figure 3, when earth handcart 200 exits in switch storehouse 100 completely, preceding resetting spring 1000, rear reset
1100 equal decompression of spring props up preceding 800 rear end of press strip, 900 rear end of rear press strip respectively, and state travel switch 600, position stroke are opened
700 full recovery original states are closed, so as to monitor position signal of the earth handcart 200 not in switchgear.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the utility model principle, on the premise of not departing from the spirit and scope of the utility model the utility model can also
There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model will
Protection domain is asked to be defined by appended claims and coordinate.