JPS62249900A - Truck for repairing tunnel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a trolley for repairing tunnels.

<Conventional Technology> Concrete deteriorates at different rates depending on the environment, and structures in cold regions or near the sea tend to deteriorate relatively quickly.

If the structure is a tunnel, the condition becomes dangerous as the concrete deteriorates, so it must be repaired as soon as possible, but in tunnels with heavy traffic, it is best to avoid blocking traffic for renovations and repairs. There must be.

Furthermore, work inside a tunnel is subject to many restrictions depending on the cross section, and work cannot be carried out as freely as you would in a large area outside.

In particular, in the case of railway tunnels, there are strict restrictions on the working time because train traffic cannot be stopped.
Moreover, the presence of a large number of dangerous objects such as electric wires adds to the constraints on the work.

<Objective of the present invention> The present invention has been made to improve these points, and is a method for repair work that can be carried out on-site, such as in railway tunnels, which are subject to many restrictions in terms of time and space. The purpose is to provide trolleys for

Structure of the present invention> Next, one embodiment of the present invention will be described.

Bogie 1 The bogie 1 is a platform with wheels 11 or tires rotatably attached to its lower surface.

When the wheels 11 are attached, the railway rails can be used as they are for work in railway tunnels.

Kuchi〉Work scaffolding A work scaffold 2 is attached to the top of the trolley 1 so as to be able to rise and fall freely.

For this purpose, a pantograph-shaped link mechanism 21 is provided between the trolley 1 and the work platform 2.

However, since the work platform 2 only needs to be raised and lowered, it is possible to use not only the link mechanism 21 but also a hydraulic lifting mechanism and other known devices.

Kuha〉Nozzle stand A nozzle pedestal 3 is provided on the work scaffold 2.

This pedestal 3 is a short column whose lower end is movably attached to the work scaffold 2, and an arm 31 is attached to the upper end of the pedestal 3 so as to be rotatable and movable up and down.

Although it is desirable that the arm 31 be raised and lowered by hydraulic pressure, a wide variety of known mechanisms can be used, such as a mechanism that manually rotates a combination of a rack and a pinion to raise and lower the arm 31.

It is desirable that this arm 31 itself can be extended and contracted in the front and rear directions, and for this purpose, a structure that can be extended and contracted by a hydraulic device can also be adopted.

A nozzle 32 is fixed to the tip of the arm 31 for spraying concrete or mortar.

Therefore, the position of the nozzle 32 can be selected over a fairly wide range by moving and raising and lowering the nozzle frame 3 and by extending and contracting the arm 31.

2〉A curing frame 4 for curing concrete etc. is attached around the curing frame truck 1.

This curing frame 4 is not fixed to the cart 1, but is attached to the cart 1 via a horizontal bin.

As a result, the position of the curing frame 4 can be freely selected from a vertical state to a horizontal state or a hanging state.

Operation of the device〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉 For carrying the cart, the lifting device 21 is retracted to position the work platform 2 in a low position, and the curing frame 4 is also folded and stored inside the cart 1, and the cart 1 is run on the rails. Move to the spraying site.

Therefore, even if the work space is limited, it can be quickly transported to the site.

Exit> Upon arrival at the protective construction work site, operate the lifting device 1f21 to raise the work scaffold 2 to a predetermined height.

Next, the various overhead wires necessary for railway train operation are protected by covering them with sheets or plastic cases.

This protection work can also be performed by raising the work platform 2 on the trolley 1.

In addition to protecting the overhead wires, the curing frames 4 on both sides of the bogie 1 are tilted outward to protect the sprayed concrete aggregate from falling onto the track bed.

This curing frame 4 can also be used as a scaffolding for workers passing by the side of the trolley 1.

(c) When the spraying work curing is completed, the nozzle mount 3 on the work scaffold 2 is moved and raised and lowered to adjust it to a convenient height, and the arm 31 is further extended and contracted to set the position of the nozzle 32.

Then, the concrete is sprayed while gripping the handle at the end of the arm 31 and moving the nozzle 32 as parallel to the spraying surface as possible.

Effects of the Present Invention> Since the apparatus of the present invention is as described above, the following effects can be expected.

Kui〉Since it can be reduced to a small volume until it arrives at the site, it will not affect other structures on the way.

Once you arrive at the site, you can set up the spray at the required location, making it possible to spray accurately.

Kuha〉Since the spray nozzle is securely held by the stand, there is no need to manually move or move the spray nozzle, which is required in conventional work.

In addition, with conventional methods of manually moving the scaffolding, there was a risk that if a worker fell or stumbled, the high-pressure jets of concrete could hit another worker and blow them off the scaffolding.

However, in the device of the present invention, such a risk does not exist because the direction and position of the nozzle are extremely stable.

[Brief explanation of drawings]

Fig. 1 2 A perspective view of the device of the present invention in use Fig. 2: Its side view Fig. 3: Its front view

Claims (1)

[Claims] A scaffolding that can be raised and lowered is installed on top of a trolley with running wheels.
On top of this scaffold, a frame for spraying concrete and mortar nozzles is movably and rotatably provided, and on the side of the platform, a curing scaffold is provided that can be opened and closed.
Trolley for tunnel repair