JPH018592Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a caisson worker elevating device.The purpose of this device is to allow workers to be raised and lowered quickly and safely, and also to prevent elevators for elevating workers from stopping due to power outages or other causes. To provide a caisson worker elevating device which does not hinder the worker's escape even when the worker moves.

The drawing shows a caisson having a worker elevating device according to the present invention. In this drawing, 1 is the caisson body made of concrete, 2 is its working room, 3 is the worker's entrance to this working room, 4 is its hatch, and 5 is a pneumatic lock chamber, and 6 is a worker elevating device, which includes a bottom shaft 7 made of, for example, a steel plate in the shape of a cylinder with a bottom, which is provided inside the pneumatic lock chamber 5, and is attached to the upper surface of this shaft. For example, a plurality of cylindrical shafts 8 made of steel plates, guide rails 9 provided within these shafts, racks 10, ramps 11 (see Fig. 3), an elevator 12, and a motor 13 for driving the elevator. , and a pinion 15 attached to the rotating shaft 14 of the motor and meshing with the rack 10.The bottom shaft 7 has a worker entrance/exit 17 which is opened and closed by a slide hatch 16 on the lower side wall of the bottom shaft 7, and the cylindrical shaft 8.
A worker entrance/exit 18 is provided in the side wall of the uppermost one. 19 is the worker entrance/exit corridor provided in front of the worker entrance/exit 18; 20 is the worker entrance/exit 1
This is a staircase installed below No. 7. Therefore, emergency entrances and exits 21 are provided on the upper and lower surfaces of the elevator 12.
and a hatch 22 for opening and closing this entrance, and an entrance and exit 23 on its side wall. Reference numeral 24 denotes an excavated soil removal device, which has a material lock 3 provided with entrances and exits 26 and 27 for a bucket 25 for transporting excavated soil and double hatches 28 and 29 for opening and closing these entrances and exits on the upper and lower surfaces.
0, a shaft 31 connected to the lower surface of this material lock, and an anchor lock 34 provided with a hatch 33 for opening and closing the lower end opening 32 of this shaft.
and is suspended from the rope 35, and the shaft 3
1. It consists of an anchor lock 34 and a bucket 25 for carrying out excavated earth and sand that moves up and down inside the work room 2.

In order for a worker to enter the working chamber 2 in the caisson of the present invention shown in the drawings, the hatch 4 of the air lock chamber 5 and the hatch 29 at the bottom of the material lock 30 of the excavated soil removal device 24 are closed, and the air pressure inside the working chamber 2 is increased. Prevent groundwater from entering the lever work chamber,
(At this time, the hatch 33 is in an open state.) Then, the worker opens the slide hatch 16 of the bottom shaft 7 of the lifting device 6 to make the air pressure in the air lock chamber 5 the same as the air pressure in the bottom shaft 7 and shaft 8. At atmospheric pressure, the air enters the shaft 8 through the worker entrance 18 of the uppermost shaft 8, descends into the bottom shaft 7 through the elevator 12, and enters the pneumatic lock chamber 5 through the worker entrances 23, 17 of the elevator 12 and the bottom shaft 7. to go into. In this way, the rear slide hatch 16 is closed and the air pressure inside the air lock chamber 5 is made the same as the air pressure inside the working chamber 2, and the hatch 4 is closed.
Open it and enter the working chamber 2 to excavate the earth and sand at the bottom of this working chamber. In addition, in order to take out this excavated earth and sand to the outside, the material lock 30 of the excavated earth and sand removal device 24 is used.
Open the double door hatch 28 and pass the bucket 25 for transporting excavated soil through the entrance 26 to the material lock 3.
0 and close the hatch 28 to raise the air pressure inside this material lock to the same pressure as the air pressure inside the work chamber 2. Open the hatch 29 and hang the bucket 25 from the doorway 27 through the shaft 31 into the work chamber 2. Lower it. . In this way, the earth and sand excavated in the work chamber 2 are put into the rear bucket 25, and the bucket is lifted into the material lock 30 through the anchor lock 34 and shaft 31, and the hatch 29 is closed to lower the air pressure inside the material lock. to atmospheric pressure,
After that, the hatch 28 is opened and the bucket 25 is taken out from the entrance 26. Next, work room 2
In order for the worker inside to go outside, the worker enters the air lock chamber 5 through the doorway 3, closes the hatch 4, and then gradually lowers the pressure inside the air lock chamber to atmospheric pressure and opens the slide hatch 16. Enter the bottom shaft 7 and get on the elevator 12. This elevator is driven by the motor 13 and the pinion 15 and rack 1 are moved.
0 and exits from the entrance/exit 18 of the uppermost shaft 8.

If the elevator 12 stops working due to power outage or other reasons while performing the above-mentioned work, it is possible to open the elevator hatch 22 and use the ramp 11 to escape to the outside. be.

The caisson of the present invention has the following excellent features.

1 The pressure inside the shaft of the worker elevating device is always maintained at atmospheric pressure, so when workers go up and down the shaft, it is not necessary to perform the complicated adjustment work of the air pressure inside the shaft like in conventional devices of this type. Moreover, since the elevator is used to move the worker up and down within the shaft, the worker can enter and leave the work room extremely quickly, safely and easily.

2. When the elevator stops due to power outage or other causes, it is possible to exit into the shaft through the emergency entrances provided on both the top and bottom of this elevator and quickly escape to the outside of the caisson using the ramps provided inside the shaft. .

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of one embodiment of the caisson of the present invention, Fig. 2 is an enlarged sectional view along the line of Fig. 1;
FIG. 3 is a perspective view of the ramp, guide rail and rack in the shaft of the worker lifting device. 7, 8... Shaft, 12... Electric elevator, 11... Tarap, 21... Entrance/exit for worker escape.

Claims (1)

[Scope of utility model registration request] Inside the air lock chamber, which can communicate with the work chamber provided at the bottom of the caisson body via a hatch, the inside of the shaft, in which the lower end is placed, is maintained at atmospheric pressure at all times, and an electric elevator and a ramp for raising and lowering workers are installed inside the shaft. A caisson worker elevating device characterized in that the elevator is provided with an entrance for workers to escape in case of an emergency, and the side wall is provided with an entrance for workers to get on and off.