JPH07165171A - Membrane panel installation device for ceiling - Google Patents

Abstract

PURPOSE:To install a ceiling membrane panel with a ceiling heat-shielding panel surely in a short time, by installing an arm for engaging the rear end with the upper end of an arm installation member on an elevator frame and a pair of clamps for nipping-holding a membrane knot at the top end of the arm. CONSTITUTION:An elevator frame 16 is lowered by operating a handle arm 22, and an arm 35 is directed immediately upward, and a hydraulic jack 34 is extended by operating a manually-driven pump 39, and the spherical body of the arm 35 is pressed by an arm pressing device 34, and the arm 35 is fixed. Then, the corrugation knot of a membrane panel 70 is held so as to be fitted a clamp 50, and nipping-held by operating the opening/closing handle of the clamp 50. Then, the device is shifted under the ceiling at an installation position, and the membrane panel 70 is raised up to immediately under the ceiling by operating the handle arm 22, and pushed onto the ceiling surface, and temporary welding is carried out. Then, the clamp 50 is opened by operating an opening/ closing handle, and the elevator frame 16 is lowered by operating the handle arm 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting device for a ceiling membrane panel of a low temperature liquefied gas tank.

[0002]

2. Description of the Related Art A membrane type tank for storing a low temperature liquefied gas, such as an LNG carrier, is constructed by disposing a heat insulating material inside an inner shell and attaching a stainless steel membrane on it. The membrane is a membrane panel in which corrugations are formed at regular intervals so as to absorb thermal contraction due to low-temperature liquefied gas (eg, 3 m length × 1 m width × 1.
2 mm thick) is lap joint welded.

FIG. 6 is a perspective view showing a membrane panel on a ceiling and a side wall of a membrane tank of an LNG carrier. In the figure, 1 is a ceiling membrane, 2 is a side wall membrane, and 3 is a corner plate connecting the ceiling membrane 1 and the side wall membrane 2. 4 is corrugation, 5
Is a corrugation knot formed at a position orthogonal to the corrugation 5.

Conventionally, the mounting of the ceiling membrane panel is
Two people lift the membrane panel, which weighs about 30 kg and is placed on the work floor under the ceiling, to the mounting location on the ceiling and press it against the heat insulation panel. One person inserts multiple columns between the work floor and the membrane panel. The membrane panel was pressed against the heat insulation panel by the pillars, and the membrane panel was attached to the already attached membrane panel after temporary welding and then main welding.

[0005]

However, the method in which a person lifts the ceiling membrane panel and inserts and installs the support column requires time and labor. An object of the present invention is to provide a device for securely attaching a ceiling membrane panel to a ceiling heat insulation panel in a short time.

[0006]

The present invention achieves the above object by the following device. The device is a trolley capable of traveling by wheels, a pair of pillars erected at one end of the trolley,
An elevating frame having one end vertically movably engaged with the pair of columns and extending in the horizontal direction, an elevating device for the elevating frame, and an erected vertically movable unit on the elevating frame in the width direction. An arm attachment member, an arm having a rear end rotatably engaged with an upper end of the arm attachment member in a vertical plane, and a pair of clamps attached to a tip end of the arm for holding a membrane knot by a handle operation. Consists of.

[0007]

Operation: The arm is fixed upward, and the corrugation knot of the membrane panel is clamped and fixed by a pair of clamps. Move the dolly below the installation location and operate the handle of the vertical movement device of the lifting frame to bring the membrane panel closer to the ceiling. If the membrane panel is misaligned with the mounting position, move the arm in the width direction of the lifting frame or move the carriage to align the membrane panel. Operate the handle of the vertical movement device of the lifting frame to press the membrane panel against the mounting location.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the device of the present invention, and FIG. 2 is a plan view of the device of the present invention. In the figure, 10 is a dolly, two wheels 11 are attached to the left and right of the front end, and a steerable wheel 12 is attached to the center of the rear end. A pair of pillars 13 are erected on the rear side of the carriage 10 with a space left and right. The pillar 13 has a groove 14 formed continuously on the outer side surface in the height direction, and a handle 15 for moving the carriage 10 is provided on the upper portion of the rear surface. Reference numeral 16 is a lifting frame. Mounting plates 18 are attached to the left and right of the rear end member 17 of the elevating frame 16.

A plurality of guide rollers 19 are attached to the left and right mounting plates 18, and the plurality of guide rollers 19 are provided.
Is rotatably engaged with the groove 14 of the column 13. Pillar 1
A fixed pulley is provided below the center of the cross beam 20 that is bridged to the upper end of 3, and a moving pulley is provided above the center of the rear end member 17 of the lifting frame, while the winding drum case 21 is attached to the rear surface between the columns 13. Has been. The winding drum in the winding drum case 21 is rotated by the handle 22. A wire is stretched around the fixed pulley and the moving pulley, one end of which is fixed to the cross beam 20 and the other end of which is fixed to the winding drum. Therefore, by rotating the handle 22, the elevating frame 16 moves up and down along the column 13.

2 in the width direction on the front part of the elevating frame 16.
A linear bearing 23 is provided, and a movable base 24 is provided on the linear bearing 23. A nut member 25 is attached to the lower surface of the movable table 24, and a screw shaft 26 whose both ends are pivotally supported on the elevating frame 16 is screwed into the nut member 25. This screw shaft 2
6 rotates the handle 30 to reduce the speed reducer 29, V
It rotates via a belt wheel 27 and a V-belt 28.
The speed reducer 29 is attached to an attachment plate 31 attached to the front surface of the rear end member 17. Therefore, by rotating the handle 30, the movable table 24 is moved up and down.
Can be moved in the width direction.

A mounting base 32 is provided on the movable base 24, and a hydraulic jack 33 is mounted on the mounting base 32. A cylinder block 37 is provided above the hydraulic jack 33 by a mounting member 36 that stands on the movable table 24. The cylinder block 37 has a groove at the upper part, which is opened on the upper surface and both side surfaces in a vertical plane orthogonal to the moving direction of the movable table 24, a ball fitting portion following the groove, and a fitting hole continuing to the ball fitting portion. There is. The sphere body formed at the rear end is fitted to the sphere fitting portion of the cylinder block 37, the shaft portion is projected from the groove, and the arm 35 is rotatably engaged.

On the other hand, an arm holder 34 is attached to the tip of the cylinder rod of the hydraulic jack 32 with its spherical recess facing the sphere of the arm 35, and is fitted in the fitting hole of the cylinder block 37. That is, when the cylinder rod of the hydraulic jack 32 is extended and the sphere of the arm 35 is pressed by the arm presser 34, the arm 35 is fixed, and the cylinder rod of the hydraulic jack 32 is contracted to expand the arm 35.
The arm 35 can be rotated by releasing the fixation. The pressure oil is supplied to the hydraulic jack 33 by operating the manual pump 39 mounted on the mounting plate 31.

Clamp mounting plate 38 for fitting the membrane panel to be mounted in the mounting mode (portrait or landscape) of the already mounted membrane panel to be skin-matched.
However, the lower surface center is attached to the tip of the arm 35 so as to be rotatable and lockable. The lock mechanism has a structure in which the lock pins are inserted into recesses formed in the arm 35 at 90 ° intervals through holes formed in the boss of the clamp mounting plate 38 at 90 ° intervals. Two clamps 50 are mounted on the upper surface of the clamp mounting plate 38 at symmetrical positions with respect to the center of the clamp mounting plate 38 at predetermined intervals.

The structure of the clamp 50 will be described below with reference to FIGS. A fixing clamp member 52 is bolted to the lower surface of one side of the mounting plate 51. Fixed clamp member 52
Is a mold part 5 fitted to one side of the corrugation knot
Have three. Guide portions 54 are formed at both ends of the mounting plate 51 from the central portion to the other side, and the sliding portions 56 bolted to the upper side surfaces of the movable clamp member 55 are fitted to the guide portions 54. . Movable clamp member 55
Is a mold part 5 that fits on the other side of the corrugation knot
Have 7. One end of a connecting rod 58 is connected to the movable clamp member 55. A guide bearing 59 is attached to the lower surface of the other side of the mounting plate 51, and an intermediate portion of the connecting rod 58 penetrates the guide bearing 59 and is slidably supported.

One end of an arm 60 is attached to the other end of the mounting plate 51, and one end of a dogleg-shaped first link 61 is pivotally attached to the other end. An open / close handle 62 is fixed to the other end of the first link 61. Then, one end of the second link 63 is pivotally attached to the other end of the connecting rod 58, and the other end is pivotally attached to the intermediate portion of the first link 61. Therefore, when the open / close handle 62 is rotated counterclockwise in FIG.
The movable clamp member 55 moves to the right (the clamp opens), and when the open / close handle 62 rotates to the right, the movable clamp member 55 moves to the left (the clamp closes).

Next, a method of mounting the ceiling membrane panel by the device of the present invention will be described. The handle 22 is operated to lower the elevating frame 16. With the arm 35 facing upward, the manual pump 39 is operated to extend the cylinder rod of the hydraulic jack 33 and the sphere of the arm 35 is pressed by the arm retainer 34 to fix the arm 35 and place it. One piece is taken out from the membrane panel stacked on the work floor, placed so that the corrugation knot of the membrane panel 70 fits in the clamp 50, and the open / close handle 62 of the clamp is operated to sandwich it.

Move the device under the ceiling at the mounting position,
The handle 22 is operated to raise the membrane panel to just below the ceiling. The displacement of the membrane panel in the front-rear direction with respect to the mounting position is adjusted by moving the entire device, and the displacement in the left-right direction is adjusted by moving the movable table 24 by operating the handle 30 to accurately position the membrane panel at the mounting position. To match. The membrane panel is pressed against the ceiling surface by operating the handle 22 to perform temporary welding. After that, the open / close handle 62 is operated to open the clamp 50, and the handle 22 is operated to lower the elevating frame 16.

In the device of the present invention, the arm 35 can be fixed by tilting the arm 35 so as to be orthogonal to the inclined ceiling surface, so that the membrane panel can be attached to the inclined ceiling. In this case, the displacement in the tilt direction is adjusted by moving the entire device in the front-back direction and the vertical movement of the elevating frame 16, and the displacement in the left-right direction is adjusted by moving the movable table 24.

[0019]

Since the device of the present invention is constructed such that the membrane panel sandwiched by the clamps can be moved up and down, and can be moved and tilted in the width direction of the elevating frame, the membrane panel can be securely mounted on the horizontal ceiling and the tilted ceiling. Can be installed in a short time.

[Brief description of drawings]

FIG. 1 is a front view of a device of the present invention.

FIG. 2 is a plan view of the device of the present invention.

FIG. 3 is a plan view of a clamp according to the device of the present invention.

FIG. 4 is a front view of a clamp according to the device of the present invention.

5 is a view on arrow AA of FIG. 4. FIG.

FIG. 6 is a perspective view showing a membrane panel on a ceiling and a side wall of a membrane tank of an LNG carrier.

[Explanation of symbols]

 10 Bogie 13 Pillar 16 Lifting Frame 19 Guide Roller 21 Winding Drum Case 22 Handle 23 Linear Bearing 24 Movable Platform 33 Hydraulic Jack 34 Arm Press 35 Arm 37 Cylinder Block 38 Clamp Mounting Plate 50 Clamp

Claims (1)

[Claims] 1. A bogie capable of traveling by wheels, a pair of pillars standing on one end of the bogie, and one end vertically movably engaged with the pair of pillars and extended horizontally. An elevating frame, a vertical movement device for the elevating frame, an arm mounting member erected on the elevating frame so as to be movable in the width direction, and a rear end rotatably in a vertical plane on an upper end of the arm mounting member. A ceiling membrane panel mounting device comprising: an arm that engages an end; and a pair of clamps that are mounted on a tip of the arm and that clamp a membrane knot by operating a handle.