JPH0615445Y2 - Mobile inspection table for gas insulated switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a mobile inspection table used for inspecting a gas insulated switchgear.

(Prior Art) As shown in FIG. 7, the operating device 2 of the gas insulated switchgear 1 is
The mobile inspection table 3 is necessary because it is at various heights.
The conventional mobile inspection base 3 of this type has a mobile base 5 having wheels 4 at the four corners of the lower surface, and a ladder 6 that rises above the mobile base 5.
And a known pedal-operated pedestal fixing mechanism (hereinafter referred to as pedal lock) 7 provided at two corners on either side of the moving pedestal 5 in order to fix the moving pedestal 5 so as not to roll during inspection. And a fall prevention mechanism 10 provided at a lower portion of the mobile pedestal 5 for locking the mobile pedestal 5 with a locking tool 9 provided on the equipment base 8 of the gas insulated switchgear 1. There is.

The pedal lock 7 includes a telescopic leg 12 for extending and contracting the leg fixing plate 11 at the upper end to the movable base 5 to float the adjacent wheel 4 from the floor surface during extension, an operation pedal 13 for extension, and an operation pedal for contraction. 14 and an operation pedal 13 for extension to extend and retract the telescopic leg 12 and an operation pedal 14 for contraction.
And a retractable operation mechanism section 5 that retracts the retractable leg 12 by the operation. The extension / contraction operation mechanism portion 15 has a swing frame 17 in which a tip end side of the extension / contraction leg 12 is rotatably supported by a pin 16 and an operation pedal 13 is attached to one end thereof.
An arm 20 having one end rotatably connected to the other end of the swing frame 17 by a pin 18 and the other end rotatably connected to the leg fixing plate 11 by a pin 19, and an operation pedal 14 for contraction.
Has a means (not shown) for pressing the pin 18 to break the extended state of the arm 20 and the swing frame 17 during the operation.

The tilt-preventing mechanism 10 is configured to include a rotary shaft 21 whose both ends are supported by a lower portion of the movable base 5, and a U-shaped locking frame 22 integrally fixed to the rotary shaft 21.

The locking tool 9 attached to the equipment base 8 of the gas insulated switchgear 1 includes a U-shaped locking member 23 protruding from the equipment base 8 and a locking frame at the opening of the locking member 23. 22
The lock shaft portion 22A is configured with a lock pin 24 that closes the entrance of the lock shaft portion 22A.

Such a mobile inspection table 3 rolls to the position of the operating device 2 to be inspected by using the wheels 4, and gas-insulates the locking shaft portion 22A of the locking frame 22 in the tilt-preventing mechanism 10 at a predetermined position. The locking frame 24 is inserted into the opening of the locking member 23 of the locking device 9 of the opening / closing device 1, and the locking frame 22 is locked by locking the locking frame 22 so that the moving base 5 does not fall. At the same time, the operation pedal 13 is stepped on to extend the telescopic leg 12 to float the adjacent wheel 4 from the floor,
The movable base 5 is fixed so as not to roll.

(Problems to be solved by the invention) However, in such a mobile inspection table 3, the inspection work cannot be started unless the operation of the tilt-prevention mechanism 10 and the operation of the lock pedal 7 are performed. It was not possible to do so, and there was a problem that the previous operation became troublesome.

An object of the present invention is to provide a mobile inspection stand for a gas-insulated switchgear capable of operating both the pedal lock and the fall-stop mechanism by one operation.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be described with reference to FIGS. 1 to 6 corresponding to the embodiments. The pedestal 5, a pedal lock 7 for fixing the movable pedestal 5 so that the movable pedestal 5 does not roll during inspection, and the movable pedestal 5 are locked to a locking tool 9 of the gas-insulated switchgear 1 to prevent the movable pedestal 5 from falling. The pedal lock 7 has an upper end fixed to the moving base 5 and expands and contracts so that the wheels 4 can be floated from the floor surface when extended, operation pedals 13 and 14, and In a gas-insulated switchgear movement inspection table 3 having a telescopic operation mechanism section 15 for extending and contracting the telescopic leg 12 by operating the operation pedals 13 and 14, the tilt-preventing mechanism 10 is provided adjacent to the pedal lock 7. The telescopic operation The operation mechanism section 15 is provided with an interlocking operation means 27 for operating the tilt-preventing mechanism 10.

(Operation) In this way, when the operation pedal 13 for extending the pedal lock 7 is stepped on, the telescopic leg 12 is extended by the operation of the telescopic operating mechanism section 15, the adjacent wheels 4 are floated from the floor surface, and the movable platform 5 is moved. Is fixed so that it will not roll. At this time, the interlocking operation means 27 is driven by the operation of the expansion / contraction operation mechanism portion 15, and the tilting prevention mechanism 10 is driven by the operation of the interlocking operation means 27 to be locked to the locking tool 9 of the gas insulated switchgear 1.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6. The parts corresponding to those in FIGS. 7 and 8 described above are designated by the same reference numerals. In this embodiment, the fall prevention mechanism 10 is provided adjacent to the pedal lock 7.
The mechanism 10 is provided with a bracket 25 for moving the pedestal 5
It is swingably supported on the lower surface of the. Anti-tilt mechanism 10
Gas insulated switchgear 1 for locking the locking frame 22 of
The locking tool 9 attached to the device base 8 has a structure in which the locking recess 26 is opened downward.

The pedal lock 7 has an interlocking operation means 27 for interlocking the tilt-preventing mechanism 10. The interlocking operation means 27 is an inverted U-shaped bracket 28 fixed to the lower surface of the movable base 5.
And has a lower part of the bracket 28 through a shaft 29.
A pair of operated arms 30 are swingably supported. Both operated arms 30 are connected to each other by a connecting member 31, one end of which is brought into contact with the lower surface of the pin 16 of the pedal lock 7,
When the pin 16 is moved up and down, a swinging operation is performed. A cross arm 32 is fixed to the other end of the operated arm 30 in an orthogonal direction. A manipulator 33 is provided at the tip of the cross arm 32 so that the manipulator 33 can be prevented from collapsing.
The locking frame 22 of 0 is abutted from below. These operated arm 30 and cross arm 32
The operating element 33 has an integral structure, and these constitute the interlocking lever 34.

Such a moving inspection table 3 is stopped in front of the operation device 2 to be inspected, and when the operation pedal 13 for extending the pedal lock 7 is stepped on, the telescopic leg 12 is operated by the operation of the telescopic operating mechanism section 15.
Are extended, whereby the adjacent wheels 4 are floated from the floor surface, and the movable base 5 is fixed in that position so as not to roll. At this time, one end of the operated arm 30 of the interlocking operation means 27 is pushed down by the lowering of the pin 16 of the expansion / contraction operation mechanism section 15, whereby the operated arm 30 is swung about the shaft 29 and the other end side is moved. As the cross arm 32 and the manipulator 33 are lifted, the fall prevention mechanism 1 is lifted.
The interlocking force is transmitted to the locking frame 22 of 0. With this interlocking force, the locking frame 22 is rotated counterclockwise in FIG. 2 about the rotary shaft 21, and the locking shaft portion 22A is lowered into the locking recess 26 of the locking tool 9 in the gas insulated switchgear 1. The movable base 5 is locked from the side to prevent the movable base 5 from falling.

In this state, the swing frame 17 of the telescopic operation mechanism unit 15 is
9 and the arm 20 are in a linear locked state as shown by the chain double-dashed line in FIG. 9, and the contraction of the telescopic leg 12 is prevented.

At the time of release, when the operation pedal 14 for contraction is stepped on, the pin 18 of the expansion / contraction operation mechanism section 15 is pushed, and the expansion / contraction operation mechanism section 1 is pushed.
5 is bent as shown by the solid line in FIG. As a result, the lock is released, the telescopic legs 12 are freed, and the movable base 5
The wheel 4 which is contracted by its own weight reaches the floor surface. At this time, the position of the pin 16 relatively rises, and the pressing force of the operated arm 30 is removed. As a result, one end of the operated arm 30 moves up around the shaft 29, and the other end moves down. Therefore, the crossing arm 32 and the operator 33 also move down, and the pushing-up force of the anti-tilt mechanism 10 against the locking frame 22 is increased. Then, the tip end side of the locking frame 22 is lowered by its own weight, and the locking shaft portion 22A is disengaged from the locking tool 9 in the gas insulated switchgear 1.

(Effect of the Invention) As described above, in the mobile inspection stand according to the present invention, since the pedal lock and the fall prevention mechanism are interlocked by the interlocking operation means, the fall prevention mechanism can be operated simultaneously by operating the pedal lock. . Therefore, the pre-operation at the time of inspection becomes simpler than in the conventional case, and the inspection operation by moving one after another can be performed efficiently.

[Brief description of drawings]

1 and 2 are a perspective view and a side view showing the relationship between the interlocking operation means and the fall-prevention mechanism of the embodiment of the movement inspection table according to the present invention, and FIG. FIG. 4 is a front view showing an example of an interlocking lever, FIG. 5 is a right side view of FIG. 4, FIG. 6 is a bottom view of FIG. 4, and FIG. FIG. 8 is a perspective view showing a relationship between a conventional mobile inspection table and a gas-insulated switchgear, FIG. 8 is a perspective view showing a relationship between a conventional anti-tilt mechanism and a locking tool, and FIG. 9 is a front view of a conventional pedal lock. 10 is a right side view of FIG. 1 ... Gas-insulated switchgear, 3 ... Mobile inspection platform, 4 ... Wheels, 5 ... Mobile platform, 7 ... Pedal-operated platform fixing mechanism (pedal lock), 8 ... Equipment base, 9 ... Stop,
10 ... Tilt prevention mechanism, 12 ... Telescopic legs, 13, 14 ...
... Operating pedal, 15 ... Expansion / contraction operation mechanism section, 16 ... Pin, 22 ... Locking frame, 22A ... Locking shaft section, 26
...... Locking recess, 27 ...... Interlocking operation means, 29 ...... Axis, 3
0: Operated arm, 32: Cross arm, 33: Operator, 34: Interlocking lever.

Claims (1)

[Scope of utility model registration request] 1. A mobile platform having wheels, a pedal operation type platform fixing mechanism for fixing the mobile platform so that the mobile platform does not roll during inspection, and the mobile platform is locked to a locking tool of a gas insulated switchgear. The pedal-operated pedestal fixing mechanism is provided with an anti-tilt mechanism that prevents the movable pedestal from falling over, and the pedal-operated pedestal fixing mechanism has an upper end fixed to the movable pedestal and extends and contracts to extend and retract the wheels from the floor when extended, and an operation pedal. In a gas insulation switchgear mobile inspection table having an expansion and contraction operation mechanism section that expands and contracts the expansion and contraction legs by operating the operation pedal, the fall prevention mechanism is provided adjacent to the pedal operation type platform fixing mechanism, A mobile inspection stand for a gas insulated switchgear, characterized in that the telescopic operation mechanism section is provided with an interlocking operation means for operating the tilt-prevention mechanism.