JPS6135472B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lining repair truck for repairing molten metal containers such as converters and ladles by thermal spraying.

[Prior art]

Conventional repair methods include a spraying method using water and air and a spraying method using thermal spray. In the case of the former, the device was compact, highly maneuverable, and had no structural problems. On the other hand, the latter
The following problems arise due to the large size of the spray pipe and the large frame that supports this pipe.

1 The device is heavy and cannot be easily moved.

2. The area in front of the furnace was very narrow, so it was desired to make it more compact.

3. There was a need to be able to move and store the thermal spray lining pipe freely.

[Purpose of the invention]

The present invention aims to solve the problems of the prior art, and its purpose is to provide a thermal spray repair truck that has a compact structure and exhibits sufficient maneuverability. .

[Structure of the invention]

In order to achieve the above object, the thermal spray repair truck according to the present invention has a configuration in which a turntable rotation shaft is attached to the upper part of the engine mounted on the rear part of the truck, and a space is formed on the truck in which the thermal spray pipe can be freely operated. It is said that

〔Example〕

Hereinafter, the present invention will be specifically described based on embodiments shown in the accompanying drawings.

In Figures 1 and 2, 1 indicates wheels 2 and 3.
The trolley 1 is equipped with an engine 4 behind it for running the trolley 1 and operating other hydraulic devices. Such a bogie structure〓〓〓〓〓
In the construction, reference numeral 5 denotes a fixed frame disposed astride the upper part of the engine 4, and the fixed frame 5 rotatably supports a rotation shaft 7 on its upper member 6. Reference numeral 8 denotes a turntable rotatably disposed on the truck 1. The turntable 8 is located substantially above the engine 4, and has a rear pivot 8a fixed to the rotation shaft 7 and a rear pivot 8a fixed to the rotation shaft 7. It extends forward from the branch 8a and is configured to have a step difference from the front turning section 8b located on the floor surface 1a of the truck 1. Turning of the turntable 8 is carried out by a turntable turning cylinder 8c, whose base end is pivoted to a bracket 1b on the floor of the truck 1, and whose telescopic rod end is attached to one side of the front turning section 8b. It is centrally supported. In addition, in order to prevent the turntable 8 from being supported in a cantilevered state only by the rotation shaft 7, the trolley 1 has turntable support rollers 9 and 10 that rotatably support the front rotation part 8b on the floor surface 1a. is installed. Further, 11 is a thermal spraying device installed on the rear pivot portion 8a of the turntable 8,
In this embodiment, the thermal spraying device 11 has a rear pivot portion 8.
Fix the gate type mounting machine frame 12 on top a, and
Bearings 13 are attached to both sides of the upper surface of
A holding cylinder 15 is rotatably supported within the support ring 14, and is further held by a second holding cylinder support ring 16 at a position spaced forward from the support ring 14. The cylinder 15 is similarly supported rotatably, and both support rings 14 and 16 are connected by a side arm 17. The telescopic rod end of the pipe depression suppression cylinder 18 which is pivoted to the
A motor 19 for rotating the holding cylinder is mounted on the holding cylinder support ring 14 , and a gear 20 attached to the output shaft of the motor 19 for rotation meshes with a gear 21 fixed to the circumferential surface of the holding cylinder 15 . A thermal spray pipe 2 is attached to the rear end of the holding cylinder 15 so that it can move forward and backward.
At the same time, a guide roller device 24 is attached to the tip of the holding cylinder 15 to smoothly advance and retreat the thermal spraying pipe 22, and a burner head 25 is attached to the tip of the thermal spraying pipe 22.
The rear end is connected to various supply pipes such as a fuel supply pipe, a material supply pipe, an oxygen supply pipe, etc. via a swivel joint 26.

Regarding other components in the illustrated embodiment, reference numeral 27 is an outrigger for preventing the trolley 1 from overturning from the overturning moment caused by the thermal spray pipe 22 when the pipe advances;
29 is the front turning section 8b from the debris and high heat during thermal spraying.
This is a front cover and heat shield to protect the workers above.

Next, we will discuss the repair work in the thermal spray repair apparatus having the above configuration.
3. The burner head 25 of the thermal spraying pipe 22 is accurately attached to the wall surface of the molten metal container by driving the pipe depression suppression cylinder 18 and the holding cylinder rotation motor 19 to move the thermal spraying pipe 22 forward, backward, downward, and rotate it. Thereafter, combustion gas, materials, oxygen, etc. are fed into the thermal spray pipe 22 through various supply pipes, and after ignition in the burner head 25, the material is injected onto the wall surface to be coated.

In such a thermal spraying operation, the turntable 8 in this embodiment has its turning center on the engine 4, and the thermal spraying device also has a fulcrum on the engine 4, so the arrangement on the trolley 1 can be significantly simplified, and the thermal spraying pipe 22 can be operated with a sufficient degree of freedom, improving maneuverability.

〔Effect of the invention〕

As described above, the present invention has the following effects.

(a) The rotation center of the turntable is provided in the space above the engine of the trolley, and the supporting point of the thermal spraying device is also provided in the same space, so the arrangement on the trolley can be simplified.

(b) With the above configuration, the thermal spray pipe can be operated with a sufficient degree of freedom, and the mobility of the truck can be improved.

[Brief explanation of the drawing]

FIG. 1 is a front view of a thermal spray repair truck according to the present invention, and FIG. 2 is a plan view. In the figure, 1...Dolly, 1a...Floor, 2...Wheels, 3...Wheels, 4...Engine, 5...Fixed frame, 6...Upper member, 7...Swivel axis, 8... Turntable, 8a... Rear pivot portion, 8b... Front rotating portion, 8c... Turntable rotating cylinder, 9... Turntable support roller, 10... Turntable support roller, 11... Thermal spraying device, 12
〓〓〓〓〓
... Gate type mounting machine frame, 13 ... Bearing, 14 ... 1st
Holding tube support ring, 14a... Pivot, 15... Holding tube, 16... Second holding tube support ring, 17...
Side arm, 18... Pipe depression suppression cylinder,
19...Motor for rotating the holding cylinder, 20...Gear, 2
1...Gear, 22...Thermal spray pipe, 23...Pipe feeding device, 24...Guide roller device, 25...
...burner head, 26...swivel joint,
27...Outrigger, 28...Front cover, 2
9...Heat insulation board. 〓〓〓〓〓

Claims (1)

[Scope of Claims] 1. A. A bogie on which the engine is mounted at the rear. B. A fixed frame mounted on the bogie and above the engine. A thermal spray repair cart comprising: a turntable that rotatably supports a branch on a fixed frame; and a thermal spraying device supported on the fixed frame.