JPH0447323Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a locking device for a floor gate on a temporary floor where workers and materials are transported to each floor of a building at a construction site by elevator. The present invention relates to a locking device for a floor gate with high safety, which allows the floor gate to be released only when the floor gate is stopped at a normal position.

[Prior Art] At the construction site of a mid-to-high-rise building, elevators, lifts, etc. (hereinafter referred to simply as elevators, lifts, etc.) that can transport workers and materials to each floor of the building are used. Elevators (referred to as elevators) are set up so that they can be raised and lowered along the building, and each floor of the building is equipped with a temporary floor for loading and unloading materials transported by the elevators (Jikkosho). (See Publication No. 56-29350). In order to prevent workers and materials from falling from the temporary floor when the elevator is not available, a floor gate is installed on each temporary floor that can open or close the doorway between the elevator and the elevator. There is.

Conventionally, the above-mentioned floor gate is provided with a locking piece for a key, for example, and a lockable piece such as a locking piece receiving member for opening and closing the locking piece on the temporary floor side. A locking device having means is provided, and the floor gate can be freely opened and closed manually by an operator. Therefore, if a worker accidentally opens the floor gate due to carelessness, or if he or she forgets to close the floor gate after transporting materials, there is a possibility that workers or materials may fall from the open temporary floor. There was a risk that this would occur.

[Problems to be solved by the invention] Therefore, a locking device that does not allow workers to manually open and close the floor gate is used to prevent the falling accident. As a technique that attempts to make this possible, for example, there is a technique described in Japanese Utility Model Publication No. 56-34115. According to this technology, when an elevator stops at a normal position on each floor, a contact plate provided on the elevator comes into contact with a limit switch installed on the side of the temporary scaffolding (temporary floor), and the link (limit switch) By rotating the limit switch, it is possible to unlock a stopper mechanism that is installed at a distance from the link and opens and closes the handrail (floor gate). It is a locking device. Therefore, when the elevator is not stopped at the normal position, the handrail (temporary floor) is locked by the stopper mechanism, and the above-mentioned problem can be solved. However, this locking device has the following problems. In other words, the link (limit switch) and the stopper mechanism are connected by a wire, and the rotation of the link (limit switch) is transmitted to the stopper mechanism by the wire to operate the stopper. Not only is the operation slow, but it also tends to be inaccurate. There are also problems such as wire breakage due to frequent use over a long period of time, and the wires must be inspected and replaced periodically. Furthermore, even if the elevator is not stopped at its normal position or stopped at another floor, if a material or other object accidentally comes into contact with the limit switch, the locking device will not activate. Since the lock is mechanical, there is a risk of the lock being released.

The present invention has been developed in view of the above, and the key of the floor gate is unlocked only when the stop position of the elevator is in the normal position on the temporary floor of the floor where the elevator is to stop. There is no risk of the floor gate being unlocked by the door, and it prevents the accident of falling from the temporary floor due to the opening of the floor gate during work.It also withstands long-term use and allows the floor gate to be opened and closed accurately and reliably. It is an object of the present invention to provide a locking device for a floor gate that can be installed at a low cost.

[Means for Solving the Problems] The locking device for floor gates according to the present invention which solves the above-mentioned technical problems is suitable for transporting workers, materials, etc. to each floor of a building at a construction site using an elevator. In a locking device for a floor gate that is installed on a temporary floor and opens or closes an elevator entrance/exit, a locking piece is provided on the end support of the floor gate, and a locking piece is provided on the end support of the floor gate. On the gatepost side, there is a lock pin that restricts the movement of the locking piece of the inserted floor gate, a solenoid that restricts the operation of this lock pin, and a contact plate and temporary floor placed on the elevator side. When the contact plate and the limit switch are in contact for a certain period of time, a control signal is generated and the solenoid that regulates the operation of the lock pin is activated, and the lock pin is manually operated and the floor It is characterized by being configured such that the locking piece on the gate side can be released.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the following embodiment.

FIG. 1 is a schematic front view showing one embodiment of the present invention, in which 1 is a floor gate, which is installed on a temporary floor 3 provided on each floor of a building 2 under construction, and which is opened or closed. It is configured to be possible. Reference numeral 4 denotes an elevator that is provided so as to be movable up and down along the building 2 and is used to transport workers, materials, etc. to each floor. It will be brought in.

Reference numeral 5 denotes a lock device installed on a gate post 6, which has a lock pin 8 that opens and closes a key locking piece 7 provided on a support post 1A of the floor gate 1 when the floor gate 1 is closed. and the lock pin 8
The ON/OFF operation is regulated by the solenoid 9 of the locking device 5. Reference numeral 10 denotes a limit switch installed on the side of the temporary floor 3, and is attached to a temporary scaffolding pipe 12 or the like at a position that contacts a contact plate 11 provided on the elevator 4 main body. The limit switch 10 is connected to the locking device 5 and the lead wire 1.
3, and the contact plate 1
Only when the lock pin 8 is in contact with the lock pin 1 for a certain period of time, a current flows through the lock device 5 and the solenoid 9 is activated, allowing manual operation of the lock pin 8 to unlock the locking piece 7 of the key.

The floor gate 1 is locked in the elevator 4.
When the contact is lost due to movement of the key, the solenoid 9 acts to close the locking piece 7 of the key, restricting the opening operation by the lock pin 8 and locking the key.

On the temporary floor 3 of each floor, the lock device 5 and limit switch 10 are installed as a set in the same manner as above, and all of them are connected to the lead wire 1.
3 and electrically connected by elevator 4
A controller (not shown) controls the lock devices 5 on each floor to operate normally.
That is, the locking device 5 is unlocked when the elevator 4 is stopped at the normal position, when the contact plate 1 is released.
1 and the limit switch 10 for a certain period of time, a current flows to the locking device 5, which activates the solenoid 9 only on that floor and releases the lock.At that time, the lock on other floors may be released by mistake. This will be done in such a way that nothing will happen.

In the embodiment described above, in order to further improve safety, a locking piece receiving member is provided that locks the locking piece 7 and can manually open and close the locking piece 7. The lock pin 8 locks the locking piece receiving member.
It is also preferable to configure it so that it can be turned on and off.
In this way, the floor gate 1 cannot be opened or closed immediately even after the lock pin 8 becomes operable due to the activation of the solenoid 9, and the worker manually removes the locking piece 7 from the locking piece receiving member. Only then can the floor gate 1 be opened.

In the present invention, a circuit is provided so that even if the contact plate 11 and the limit switch 10 are in contact with each other, the solenoid 9 does not operate unless the contact period continues for a certain period of time. In this way, when the instantaneous contact is made when the elevator 4 passes each floor other than the stop floor, the solenoid 9 will not be activated and the floor gate 1 will be engaged by the passage of the elevator 4. It is safe because the lock will not be unlocked.

Further, in the present invention, in order to ensure that the floor gate 1 is locked and closed, when the locking piece 7 is not located at a position where it can be locked by the locking pin 8 of the locking device 5, the elevator 4
It is also preferable that the configuration is such that the switch does not operate. That is, for example, when the locking piece 7 is located at a predetermined position on the locking device 5, a part of the locking piece 7 comes into contact with the locking device 5, and this contact causes current to be supplied to the drive source of the elevator 4. This means setting up and configuring a circuit, etc. that allows the elevator 4 to move up and down.

In the present invention, the configuration for opening and closing the floor gate 1, that is, the configuration of the locking device 5 having the shape of the locking piece 7 of the key and the locking pin 8 for locking it, etc. is arbitrary, and the above-mentioned implementation is possible. For example, the pillar 1A of the floor gate 1 also serves as the locking piece 7, and the lock device 5 directly holds the pillar 1A and the locking piece 7, and uses the solenoid 9 to control the pillar 1A and the locking piece 7. 7 may be configured to turn on/off the lock, and various other configurations may also be adopted.

[Function] The present invention has the above configuration, and its function is as follows. That is, when the materials and workers required for construction work get on the elevator 4, the elevator 4 moves up and down to the required floor where it should be stopped. As the elevator 4 reaches the normal position of the floor and stops, the contact plate 11 provided on the main body of the elevator 4 contacts the limit switch 10 installed on the temporary floor side of the floor for a certain period of time or more. Then, due to this contact for a certain period of time or longer, current flows only to the lock device 5 of the floor connected to the contact plate 11, and the solenoid 9 in the lock device 5 acts. Due to this action, the lock pin 8 that locks the locking piece 7 of the floor gate 1 becomes operable, and the floor gate 1 can be opened by manual operation of the lock pin 8.

Therefore, a worker moves the support column 1A to open the floor gate 1, carries out materials, etc. between the temporary floor 3 and the elevator 4, and after completing this work, the worker moves the support column 1A again. After confirming that the locking piece 7 of the floor gate 1 is at a predetermined lockable position in the locking device 5, the elevator 4 is driven and moved.

Then, as the elevator 4 moves, contact between the contact plate 11 and the limit switch 10 is lost, and at the same time, current stops flowing through the locking device 5, so that the solenoid 9 stops acting, and the lock pin 8 locks the floor gate 1. will be locked.

In this way, even when the elevator 4 moves to another floor, only the floor gate 1 on the floor where the elevator 4 is stopped can be opened, and at that time, the floor gates 1 on other floors are locked. First, the floor gate 1 is maintained in a closed state.

[Effects] Since the present invention has the above-mentioned configuration and operation, it is possible to solve the technical problems of the present invention described above,
The floor gate on that floor will only be unlocked if the elevator has been stopped at the normal stop position on that floor for a certain period of time, and it is impossible to unlock it in other cases than the above. Also, floor gates cannot be opened on other floors. Follow. Whenever the floor gate is ready to open, the elevator is stopped at the temporary floor; however, if the elevator is not in its normal position, the floor gate cannot be opened, so workers and materials are Accidents such as objects falling by mistake can be prevented. In addition, a locking device with a lock pin operated by a solenoid is used to open and close the floor gate key, which not only opens and closes accurately and reliably, but also ensures long-term use. The installation cost can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing an embodiment of the present invention. In the figure, 1 is a floor gate, 2 is a building, 3 is a temporary floor, 4 is an elevator, 5 is a lock device, 6
1 is a gate post, 7 is a locking piece, 8 is a lock pin, 9 is a solenoid, 10 is a limit switch, and 11 is a contact plate.

Claims (1)

[Scope of utility model registration request] A locking device for a floor gate that is installed on a temporary floor set up to transport workers, materials, etc. to each floor of a building at a construction site by elevator, and that opens or closes the entrance/exit of the elevator. A locking piece is provided on the side of the gate, and on the other hand, a locking pin is provided on the gatepost side opposite to the end support of the floor gate to restrict the movement of the locking piece of the inserted floor gate. It consists of a solenoid that regulates the operation of the lock pin, a contact plate placed on the elevator side, and a limit switch placed on the temporary floor side. When the contact plate and limit switch are in contact for a certain period of time, a control signal is issued and the lock pin is locked. A locking device for a floor gate, characterized in that a solenoid regulating the operation of the floor gate is activated, and a lock pin is manually operated to release a locking piece on the floor gate side.