JP2524476Y2 - Door lock device for yard crane shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a yard crane shutter provided at an entrance of a building provided with a yard crane having a work range from indoors to outdoors, and in particular, a door of a yard crane shutter. The present invention relates to a body lock device.

[Industrial application field] In a building 2 provided with a yard crane shutter 1 as shown in FIG. 2, elevated traveling rails 3 are laid along both side walls of the building 2 so that the width of the building is almost full. A traveling crane 4 is on the traveling rail 3.

However, the entrance and exit 5 where trucks and work vehicles enter and exit
Is narrower than the crane width, and the portions that interfere with the traveling crane 4 on both sides of the upper side wall 6 of the entrance 5 are:
A door 7 is provided. The door 7 is mounted on the traveling rail 3.
And the upper end is rotatably mounted.

The yard crane shutter 1 includes an opening / closing device 10, and the opening / closing device 10 and the door 7 are connected by a rope 11.

The guide rail 8 of the yard crane shutter 1 is provided on the door body 7 and the side wall 6, and guides the shutter curtain 9 over the entire height of the entrance 5 when the yard crane shutter 1 is opened and closed.

Further, at the time of crane operation, the shutter 7 is opened and the door 7 is pulled up by the opening / closing device 10 and opened so as not to interfere with the traveling crane 4.

The above-mentioned door 7 needs to be locked in a closed state,
The yard crane shutter 1 has a door locking device.

 A conventional door lock device will be described with reference to FIG.

An L-shaped fitting 12 is fixed to the lower end indoor side of the door body 7, and a locking hole 14 into which a lock shaft 13 described later is fitted is formed in the fitting 12. The lock shaft 13
The upper end is guided by an L-shaped guide fitting 15, and the lower end is pivotally attached to a lever 17 which is pivotally attached to the side wall 6 via a bracket 16.

When the lever 17 is rotated, the lock shaft 13 is fitted into and disengaged from the locking hole 14 of the receiving bracket 12, and the door 7 is locked in the fitted state, and the door 7 is not locked in the removed state. Becomes

In FIG. 4, reference numeral 18 denotes a stopper, and reference numeral 19 denotes a rubber plate for buffering.

[Problem to be Solved by the Invention] However, the above-described conventional door lock device has the following problems.

The yard crane shutter is large, so that the lock shaft 13 is long and heavy. The lever 17 is provided at a relatively high place,
The work of fitting and removing the lock shaft 13 is heavy and difficult.

Although not particularly shown, the control panel of the opening / closing device and the yard crane shutter includes the lever 17 such as a corner of a side wall.
In order to open and close the door,
A worker must move each time between the lever 17 and the control panel, or a plurality of workers are required, resulting in poor workability.

The present invention has been made to solve such a conventional problem.

Means for Solving the Problems In the present invention, a guide rail is provided on an upper side of a yard crane shutter, and a door body rotatably provided around an upper end so as not to interfere with a traveling crane, and a rope are wound. take,
An opening / closing device that opens and closes the door body, a lock rod urged downward by a spring at a lower end of the door body, and a cylinder block provided on the building side and capable of fitting with the lock rod. , Wherein the rope and the lock rod are engaged.

[Operation] In the closed state of the door, the lock rod is fitted into the cylinder block by the urging force of the spring to be locked, and when the door is opened, the rope is wound by the opening / closing device. Rises, the lock rod comes out of the cylinder lock and the locked state is released, and then the door opens following the winding of the rope.

In order to lock the door, the rope is extended by the opening / closing device, and the door is closed. When the door is closed, the lock rod is fitted into the cylinder block by the force of the spring and locked.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, the same components as those shown in FIG. 4 are denoted by the same reference numerals.

A pair of upper and lower rod guides 20 and 2
A lock rod 22 is slidably fitted to the lock guides 20, 21. A stop ring 23 is fixed to the upper part of the lock rod 22, and a spring seat 24 is
Is fixed. Further, a bracket 25 is fixed to the upper rod guide 22, and the lock rod 22 is fixed to the bracket 25.
Is loosely fitted.

A compression spring is provided between the spring seat 24 and the bracket 25.
26 is sandwiched in a compressed state, and the lock rod 22 is urged downward. A pulley 27 is rotatably provided above the lock rod 22, and a rope pulled out from the opening and closing device 10 is provided.
11 is engaged with the lock rod 22 after being wound around the pulley 27.

A fixing bracket 28 is fixed to the upper end of the side wall 6, and a cylinder block 29 is attached to the fixing bracket 28. The cylinder block 29 is provided with a lock hole 30 into which the lower end of the lock rod 22 is fitted.

 Hereinafter, the operation of the present embodiment will be described.

FIG. 1 shows an unlocked state.
The lock rod 22 is fitted into the cylinder block 29 by the force of the compression spring, and the door 7 is fixed to the side wall 6 via the lock rod 22.

To open the door 7 from this state, simply use the opening and closing device.
The rope 10 may be wound by driving the rope 10.

Although the upward force acts on the lock rod 22 by winding the rope 11, the door body 7 is heavier than the repulsive force of the compression spring 26, and the door body 7 itself does not rotate. Only 22 rises. When the lock rod 22 is raised, the lock rod 22 is pulled out of the cylinder block 29 (see FIG. 1). Further, when the rope 11 is wound by the opening / closing device 10, the stop ring 23 is
, And the lock rod 22 does not move up with respect to the door 7. Therefore, further winding of the rope 11 causes the door 7 to pivot upward, that is, open.

Next, when closing the door 7, the reverse of the case of opening the door 7 may be performed. When the door is closed, the gravity of the door 7 is acting until the door 7 comes into contact with the rubber plate 19, so that tension is applied to the rope 11, and the lock rod 22 is pulled up. It is still standing. Thus, the lock rod 22 does not interfere with the cylinder block 29 due to the closing operation of the door 7, and after the door 7 comes into contact with the rubber plate 19, the force of the compression spring 26 applies. The lock rod 22 fits into the cylinder block 29 to lock the door 7.

An interlock switch is provided to check whether the lock rod and cylinder block are fitted. If the lock rod does not fit into the cylinder block, the control panel lamp is turned on or a buzzer sounds. Is also good.

[Effects of the Invention] As described above, according to the present invention, there is no need to manually unlock and lock the lock device each time the door is opened and closed. Only the switch operation is sufficient, and the work of the operator is greatly reduced, and the excellent effect that the door body can be quickly opened and closed by one person is exhibited.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of the present invention, FIG. 2 is an overall front view showing the relationship between a conventional example and a building, FIG. 3 is a front partial side view thereof, and FIG. FIG. 1 is a yard crane shutter, 7 is a door body, 10 is an opening / closing device, 11 is a rope, 22 is a lock rod, 26 is a compression spring, 29
Indicates a cylinder block.

Claims (1)

(57) [Scope of request for utility model registration] A guide rail provided on an upper side of a yard crane shutter, a door body rotatably provided around an upper end so as not to interfere with a traveling crane;
An opening / closing device that opens and closes the door body, a lock rod urged downward by a spring at a lower end of the door body, and a cylinder block provided on the building side and capable of fitting with the lock rod. A door locking device for a yard crane shutter, wherein the rope and the lock rod are engaged with each other.