JPH04134596U - Manrock's inner door device for muddy water pressure shield machine - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate opening of internal doors. [Structure] A door pocket-shaped door storage chamber 6 is provided around the inside of the opening 5 on the tip side of the manlock 4 provided in the partition wall 3 of the muddy water chamber 2, and a position where the opening 5 is closed from this door storage chamber 6. An inner door 7 is provided that can freely slide along the partition wall 3, and a sealing material 8 made of an elastic body with a hollow interior is attached around the door stop surface of the inner door 7. It is characterized by being connected to an air pipe 10 for adjusting the internal pressure.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a manlock that is attached to the bulkhead of a muddy water chamber of a muddy water pressurized shield machine. The invention relates to an internal door device in a park.

0002

[Conventional technology]

Generally, the mud chamber bulkhead of the mud pressurized shield machine is equipped with a A manlock is installed to allow the person to enter and exit the chamber, but the conventional The inner door on the bulkhead side of the Manlock is an inward-opening type that opens to the muddy water chamber side. A door that opens and closes is used.

0003 By the way, when the shield reaches the shaft or connects underground, the mud inside the chamber Filling with highly concentrated muddy water to stabilize the face, or injecting muddy water solidification liquid to solidify the muddy water. However, when workers from Manrock work inside the muddy water chamber, Earth and sand stuck around the door and the door could not be opened, so we had to remove the earth and install the face. Currently, such dangerous work is carried out by dismantling bulkheads.

0004

[Problem that the idea aims to solve]

This invention solves the problem of difficulty in opening and closing the inner door of conventional manlocks. The goal is to solve this problem.

[0005]

[Means to solve the problem]

This invention provides an opening on the tip side of the manlock 4 provided in the partition wall 3 of the muddy water chamber 2. A door pocket-shaped door storage chamber 6 is provided around the inside of the portion 5, and the door can be opened from this door storage chamber 6. An inner door 7 is provided that can freely slide along the partition wall 3 to a position where the mouth portion 5 is closed. A sealing material made of an elastic body with a hollow interior is installed around the door stop surface of the inner door 7. 8 is installed, and air is installed in this sealing material 8 to adjust the internal pressure of the hollow part 9. Inner door installation of Manlock in muddy water pressurized shield machine connected with pipe 10 This is a proposal for a new location.

[0006]

[Effect]

When the inner door 7 is closed, the inner door 7 is pulled out from the door storage chamber 6 and the opening 5 is closed. At the same time, air is introduced into the hollow part 9 of the sealing material 8 through the air pipe 10. is fed under pressure, and the periphery of the opening 5 is sealed by the expanded sealing material 8.

[0007] In addition, the inner door of the manlock can be opened when the shield reaches the shaft or connects underground. When releasing the air, air in the hollow part 9 of the sealing material 8 is removed via the air pipe 10. , the sealing material 8 is contracted to relieve the pressure of dirt, etc. acting on the inner door 7, and this condition is In this state, the inner door 7 is slid into the door storage chamber 6 to open the opening 5.

[0008]

【Example】

A manlock 4 is attached to the outside of the bulkhead 3 of the muddy water chamber 2 of the muddy water pressurization shield machine 1. The opening 5 provided in the partition wall 3 at a position corresponding to the tip of the manlock 4 A door pocket-shaped door storage chamber 6 is provided around the inside, and a door is provided inside the bulkhead 3. - Can be slid freely along the partition wall 3 from the storage chamber 6 to the position where the opening 5 is closed A rectangular plate-shaped inner door 7 is provided.

[0009] The inner door 7 is made of an elastic body such as rubber that is hollow inside around the door stop surface. A sealing material 8 is attached, and this sealing material 8 adjusts the internal pressure of its hollow part 9. An air pipe 10 is connected to supply air into the hollow part 9 through a valve 11. Adjust the pressure inside the hollow part 9 by pumping or discharging internal air. The seal material 8 is configured to expand and contract when the door is closed. By expanding the sealing material 8, the area around the inner door 7 can be sealed. Also, by contracting the sealing material 8 when the door is opened, the inner door 7 is The pressure used can be relaxed.

0010 A hole is provided on the side of the inner door 7 from the inside of the door storage chamber 6 to the side edge of the opening 5. A roller 13 that rolls on a guide rail 12 is attached.

[0011] An inner door 7 is provided at the periphery of the opening of the door storage chamber 6 and the side edge of the guide rail 12. Packings 14 and 15 are provided that are crimped and sealed to prevent dirt, etc. from entering the interior. is prevented.

0012 The bulkhead 3 has a jack at the front part where the tip of the inner door 7 is located when it is closed. When the key 16 is installed and the inner door 7 is firmly fixed due to earth and sand, I decided to forcibly press the tip to release the fixation and initially make it slide slightly. This allows for smooth sliding movement afterwards.

[0013] Note that an outer door 17 is provided at the rear end of the manlock 4.

[0014]

[Effect of the idea]

As described above, according to this invention, when the inner door is closed, the air pipe is Air is forced into the hollow part of the material, and the expanded sealant seals the area around the opening. can do.

[0015] In addition, the inner door of the manlock can be opened when the shield reaches the shaft or connects underground. When releasing the seal, remove the air from the hollow part of the seal material through the air pipe, and The material is contracted to relieve the pressure of dirt, etc. that acts on the inner door, and in this state the inner door is closed. The opening can be opened easily by sliding the door smoothly into the door storage chamber. This allows dangerous work such as earth removal work to be carried out reliably without dismantling the bulkhead. Ru.

[0016] Additionally, since the door is a sliding type, the chamber size can be kept small.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of a muddy water pressurizing shield machine according to the present invention.

FIG. 2 is a longitudinal sectional side view of a manlock portion according to the present invention.

FIG. 3 is a cross-sectional side view of the door device of the present invention.

FIG. 4 is a longitudinal sectional front view of the door device of the present invention.

[Explanation of symbols] 1 Mud water pressurization shield machine 2 Mud water chamber 3 Bulkhead 4 Manrock 5 Opening 6 Door storage room 7 Inner door 8 Sealing material 9 Hollow part 10 Air pipe 11 Valve 12 Guide rail 13 Roller 14 Packing 15 Packing 16 Jack 17 Outside door

Claims (1)

[Scope of utility model registration request] Claim 1: A door pocket-shaped door storage chamber is provided around the inside of an opening on the tip side of a manlock provided in a partition wall of a muddy water chamber, and a door storage chamber is provided along the partition surface from the door storage chamber to a position where the opening is closed. A sliding inner door is provided, a sealing material made of a hollow elastic body is attached around the door stop surface of the inner door, and an air pipe is attached to this sealing material for adjusting the internal pressure of the hollow part. Manlock's inner door device for a muddy water pressure shield machine, which is characterized by being connected.