JPH07115759B2 - Horizontal long object loading / unloading device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention accommodates a long object such as when a tube bundle formed by bundling a large number of heat transfer tubes in and out of a cylindrical shell of a horizontal shell-and-tube heat exchanger. The present invention relates to a device used when carrying in or out of a place.

[0002]

2. Description of the Related Art In a horizontal shell-and-tube heat exchanger, a tube bundle formed by inserting and fixing a number of heat transfer tubes in parallel with a disk-shaped tube plate and a baffle plate is inserted into a cylindrical shell and sealed. In general petroleum refining plants and chemical plants, it is often the case that several or more units are installed in one place.

By the way, in the above-mentioned plant, it is necessary to periodically pull out the tube bundle from the shell, convey it to a predetermined place such as a washing place for maintenance and cleaning, and then insert it again into the shell. However, this type of tube bundle may have a total length of about 6 to 16 m and a weight of 10 tons, and conventionally, a method of using two crane cars as shown in FIG. 14 has been adopted for loading and unloading. Was there.

In this method, first, the lid of the shell A of the heat exchanger is removed, then one mobile crane 1 is arranged in front of the shell A and the other mobile crane 2 is arranged laterally of the shell A. The wire 3 of the first mobile crane 1 is connected to the tube plate C at the front end of the tube bundle T via the pulleys 4 and 5, and
While the front end of the tube bundle T is suspended by the second crane vehicle 2, the wire 3 of the first crane vehicle 1 is wound up to
Pull out. After pulling out the tube bundle T to some extent, the position where the second crane vehicle 2 is hung is shifted backward, and this operation is repeated to pull out the tube bundle T completely.

The tube bundle T that has been pulled out is once laid down on the ground, the crane trucks 1 and 2 are evacuated, and the crane trucks 1 and 2 are loaded on a truck for transportation and transported to a work place. Then, after inspecting and cleaning here, the tube bundle T is again inserted into the shell A by the procedure reverse to the above, and the work is completed.

However, according to this method, mobile cranes 1 and 2 are used.
It is difficult to cooperate with each other, requires a high degree of skill, and when the tube bundle T and the shell A interfere with each other when the tube bundle T is pulled out or inserted, there is a problem in that each part is easily damaged, and there is a problem in that the work is dangerous.

Therefore, recently, it has been considered to use a working vehicle in which a tube bundle extracting / inserting mechanism is provided on a movable carriage. If such a working vehicle is placed in front of the heat exchanger with its center line aligned and the pulling and inserting mechanism is operated to move the tube bundle into and out of the shell, workability can be improved and damage to the tube bundle and the like can be prevented. it can.

[0008]

However, even when such a work vehicle is used, when the tube bundle is unloaded from the work vehicle in a washing place or the like, or when the tube bundle that has been washed and checked is loaded onto the work vehicle. Had to use a small crane or the like, which was troublesome and the work efficiency was low.

The present invention has been made in view of the above circumstances, and provides a loading / unloading device for a horizontal long object capable of efficiently loading / unloading a long object on a trolley without using a crane or the like. That is the issue.

[0010]

According to a first aspect of the present invention, there is provided a loading / unloading device for a horizontal long object having a U-shaped notch through which a horizontally arranged long object can pass vertically. A main body, a traveling means provided on the carriage main body for traveling the longitudinal or width direction of the carriage main body, an elevating means for raising and lowering the carriage main body provided on the carriage main body, and a length to be conveyed provided on the carriage main body. Long object loading / unloading means for loading or unloading a scale to a support position above the cutout portion, and provided in the carriage width direction along each of the front end edge and the rear end edge of the cutout portion. A pair of guide means, a movable rail having both end portions suspended between the guide means and supported in the front-rear direction of the carriage, and movable along the entire width of the cutout portion, and the movable rail. The open side edge of the notch The front rail and the rear rail that extend continuously to the front end and the rear end of the movable rail in the positioned state, the fixed rail provided along the side edge on the back side of the notch, the movable rail, and the front rail. And three rear rails, and two or more long object supporting means that are hung between the fixed rails in the width direction of the carriage and movable in the front-rear direction of the carriage.

According to a second aspect of the present invention, there is provided a device for loading and unloading a horizontal long object, in which a horizontally arranged long object has an opening through which the long object can pass in a vertical direction, and the main body of the bogie is provided. A traveling means for traveling the trolley body, an elevating means for raising and lowering the trolley body provided on the trolley body, and a long object provided on the trolley body for carrying in or supporting a long object to be transported to a supporting position above the opening. A long object loading / unloading means for carrying out from the carriage, a long position in a state where the long object is movably provided between the supporting position on the carriage main body and a non-supporting position separated from the opening. It is characterized by comprising a long object support means capable of horizontally supporting an object.

[0012]

In the apparatus according to claim 1 of the present invention, when a long object is loaded on the trolley body, first the movable rail is moved to a position continuous with the front rail and the rear rail, and then the long object support means is moved. Move to the long object support position on the rail.
In this state, the front end of the trolley body is placed toward the long object to be carried in and out, and the trolley body is raised to match the height of the long object. Next, the long object loading / unloading means is actuated to move the long object onto the notch, and the long object is placed on the long object supporting means. In this state, if the trolley body is lowered, it is possible to run by loading long objects.

When the long object is unloaded from the trolley body, the trolley body is raised, and the long object support base, which is smaller than the cutout portion in plan view, is arranged below the cutout portion. To drop. Then, the long object supporting base passes through the notch and receives the long object, and the long object is lifted from the long object supporting means, so that each long object supporting means is moved from the movable rail to the front rail and the rear rail. Move to and retract from the notch. Further, the trolley body is lifted while the long object is placed on the support table, and the trolley body is lifted to a position higher than the long object. Next, the movable rail is moved to the fixed rail side along the guide means, the carriage body is landed again, and the carriage means is caused to travel to the side opposite to the open side of the cutout portion from the long object. By separating them, a long object can be unloaded. It is also possible to reverse the above work.

On the other hand, in the apparatus according to the second aspect of the present invention, when a long object is loaded on the trolley body, the trolley body is first run, and the tip of the trolley body is placed toward the long object to be loaded and unloaded, and then the trolley body is loaded. To raise the height of the long object. Next, after moving the long object supporting means to the supporting position above the opening, the long object carrying-in / out means is operated to move the long object to the supporting position, and this is placed on the long object supporting means. Place it. In this state, if the trolley body is lowered, it is possible to run by loading long objects.

When unloading a long object from the main body of the carriage, the main body of the carriage is raised, and below the supporting position, a long object supporting carriage smaller than the opening is arranged in plan view.
Lower the trolley body. Then, since the long object supporting carriage passes through the opening and supports the long object, the long object supporting means is moved to the unsupported position, and the carriage main body is lifted again.
As a result, since the long object remains on the support carriage, the long object is transferred by passing under the carriage main body together with the support carriage. It is also possible to reverse the above work.

[0016]

1 is a plan view of an embodiment of a carry-in / carry-out device according to claim 1 of the present invention, and FIG. 2 is a side view thereof. In the figure, reference numeral 10 is a rectangular carriage main body that is long in the front-rear direction (the left side in FIG. 1 is the front). The carriage main body 10 is provided with wheels (traveling means) 12 for each front and rear, and steering and steering for all four wheels. It can be driven. These wheels 12 can be oriented in the width direction of the carriage body 10. An operation console 16 for operating the wheels 12 and operating each mechanism is installed at the front end of the carriage main body 10.

Outriggers 14 are vertically attached to both sides of the front end and the rear end of the carriage main body 10. These outriggers 14 project their legs 14A downward and lift the wheels 14 from the ground to lift the truck main body 10
FIG. 2 shows a fixed state of the trolley.

A rectangular notch 10A, which is open to one side, is formed in the center of the carriage body 10, and the carriage body 10 is generally U-shaped (see FIG. 9).
The cutout portion 10A is a tube bundle (long product) as shown in FIG.
It has a size such that T can pass in the vertical direction while maintaining the horizontal state.

On the other hand, the bogie fixing arms 18 are horizontally attached to both sides of the rear end of the bogie main body 10, and the rear ends of the bogie main body 10 are attached to a saddle portion S for supporting a shell A accommodating a long object T. It is removable. Furthermore, a chain mechanism (not shown) for suspending the lid of the shell A with a hook is provided at the rear part of the bogie main body.

A fixed rail 24 is mounted on the carriage main body 10 along the long side on the back side of the cutout portion 10A.
The entire length of the fixed rail 24 is longer than the cutout portion 10A by a constant length in the front and rear. On the other hand, the guide member 22 is fixed along each of the front edge and the rear edge of the cutout portion 10A. A movable frame 20 extending in the front-rear direction of the carriage body 10 is mounted between these guide members 22 so as to be movable in the width direction of the carriage body 10. On the movable frame 20, the fixed rail is provided. A movable rail 26 is fixed at the same height as 24.

A pair of beams 32 are horizontally rotatably attached to the lower surface of the trolley body 10 at the center of the notch 10A. When these beams 32 are oriented in the width direction of the trolley body 10, the free ends thereof are provided. The portion can be connected to the lower surface of the movable frame 20 by fastening means such as bolts. When the movable frame 20 is thus supported by the beam 32, the movable frame 20
It is possible to prevent the buckling deformation of the trolley, and it is possible to enhance the rigidity of the trolley body 10 when the tube bundle is transported. Further, by directing the beam 32 in the longitudinal direction of the bogie main body 10, each beam 32 is completely retracted from the cutout portion 10A.

3 and 4 are views showing the mounting structure of the guide member 22 and the movable frame 20. As shown in FIG. Guide member 22
Is composed of a rail supporting portion 38 having an L-shaped cross section, which is fixed to the lower surface of the carriage body 10, and a rail 40 fixed to the upper surface of the rail supporting portion 38. A horizontal roller 42 that rolls on the rail 40 is attached to the lower surface of the movable frame 20, and a pair of vertical rollers 48 is attached to the front and rear end surfaces of the movable frame 20 with their axes oriented vertically. Has been. These vertical rollers 48 roll along the end surface of the carriage body 10.

A hook-shaped stopper member 44 is fixed to the front end or the rear end of the movable frame 20, and an engaging projection 46 is formed on a corresponding portion of the carriage body 10.
The movable frame 20 is prevented from falling off the rail 40 by the engagement of the engagement protrusion 46 and the stopper member 44.

Further, as shown in FIG.
The stopper plate 50 is fixed to the outer peripheral surface of the movable frame 20 and the stopper plate 52 is fixed to the inner peripheral surface of the movable frame 20. When the movable frame 20 is moved outward, the stopper plate 50 is moved to the movable frame 2.
The stopper plate 52 contacts the side surface of the carriage main body 10 and the position of the movable frame 20 is regulated. Further, four fixing bolts 53 are provided penetrating the stopper plate 50 and the stopper plate 52, and these fixing bolts 53 are used to stop the stopper plate 50 except when necessary.
The stopper plate 52 is prevented from opening. When moving the movable frame 20, it is sufficient to remove all the fixing bolts 53.

On the upper surface of the carriage main body 10, as shown in FIG. 1, when the movable rail 26 is moved to the open end of the notch portion 10A, the front rail 28 is continuous with the front and rear ends of the movable rail 26.
A and the rear rail 28B are installed on the same straight line, and the front end and the rear end thereof extend to a position aligned with the front end and the rear end of the fixed rail 24.

Between the front rail 28A, the rear rail 28B, the movable rail 26, and the fixed rail 24, a plurality (two in the figure) of sliders (long object support means) 30 are bridged in the width direction of the carriage. , And each of them can move in parallel in the front-rear direction of the carriage. The slider 30 supports the extracted tube bundle T, and in any case, the article support height can be adjusted as described later.

5 and 6 are diagrams showing the details of the slider 30. As shown in FIG. The slider 30 has two wheels 62 rotatably attached to both ends of a main body 60 having an elongated rectangular shape. The wheels 62 are mounted on the movable rail 26 (or the front and rear rails 28A and 28B) and the fixed rail 24. Roll along each. In addition, guide claws 66 that prevent the slider 30 from falling off the rails 24 and 26 are fixed to the lower surfaces of both ends of the main body 60.

An operating shaft 68 is rotatably mounted between the side plates 60A at both ends of the main body 60 in the longitudinal direction of the slider 30, and a handle 70 is fixed to one end thereof. The operation shaft 68 is formed with male screw parts 72A and 72B which are reverse screws to each other at positions equidistant from the center thereof, and these male screw parts 72A and 72B are moved by a female screw member 74A respectively to move members. 74 is attached, and when the handle 70 is rotated, these moving members 74 are
Move symmetrically toward and away from each other.

Openings 76 are formed in the main body 60 at positions facing the moving range of the moving members 74, the lower ends of the respective moving members 74 are put in the openings 76, and the lower ends of the respective moving members 74 are attached to the main body. A guide roller 78 that rolls along the lower surface of 60 is attached. In addition, each moving member 74
The tube bundle supporting rollers 80 are attached to the upper end of each of them at the same height with their axes oriented in the longitudinal direction of the carriage.

On the other hand, a column 82 is attached vertically through the central portion of the main body 60 via a nut 84, and the height can be adjusted by operating the nut 84. Stanchion 8
The upper end of 2 is bifurcated toward both ends of the slider, and a tube bundle supporting roller 86 is attached to each tip so as to be rotatable and have its axis oriented in the longitudinal direction of the carriage.

The tube bundle supporting roller 86 is located at a position lower than the tube bundle supporting roller 80 in accordance with the outer peripheral curvature of the tube bundle T, and the rollers 80 and 86 support the tube bundle T at three points. . In addition, concave portions are formed on the outer peripheral surfaces of the rollers 80 and 86, and as shown in FIG.
A tube plate C (a disk that supports the heat transfer tubes) of the tube bundle T is placed in these recesses. Further, one side plate 60 of the main body 60
A position adjustment shaft 90 is penetratingly supported by A, and by rotating this, the boss 88 attached to the operation shaft 68 is displaced in the axial direction, and the axial position of the operation shaft 68 can be finely adjusted. There is.

On the other hand, as shown in FIG. 1, at the front end of the trolley body 10, a wire winding mechanism (long material loading / unloading means) 3 is provided.
4 is installed, and the tube bundle T can be pulled by connecting the end of the wire 36 to the tube bundle T. Although not shown, the carriage body 10 is also provided with a tube insertion mechanism for inserting the tube bundle T into the shell A.

Next, a method of using the carry-in / carry-out device having the above structure will be described. When loading a long object on the trolley body 10, first, the trolley body 10 is run with the wheels 12 grounded, the center lines of the trolley body 10 are stopped in front of the shell A, and the legs of the outriggers 14 are fixed. Lower 14A,
The trolley body 10 is lifted and fixed to the ground, and the slider 30
The upper end of the tube bundle T is slightly lower than the lower end of the tube bundle T in the shell A. Then, each carriage fixing arm 18 is operated to firmly connect the carriage body 10 and the saddle portion S.

At this time, the movable frame 20 is moved to the outer position as shown in FIG. 7 to move the movable rail 26 to the front rail 28A.
Then, the sliders 30 are moved onto the movable rails 26 in a continuous manner with the rear rails 28B. The free end of each beam 32 is fixed to the lower surface of the movable frame 20 with a bolt or the like, and the stopper plate 50 and the stopper plate 52 are fixed with a fixing bolt 53.
To fix. On the other hand, the handle 70 of each slider 30 is operated as necessary to adjust the distance between the tube bundle supporting rollers 80 so that the relative positions of the tube bundle supporting rollers 80 and 86 match the curvature of the tube sheet of the tube bundle T to be supported. Keep it.

Then, the lid of the shell A is removed, the wire 36 of the winding mechanism 34 is connected to the exposed end of the tube bundle T, and the winding mechanism 34 is operated to gradually pull out the tube bundle T. As the tube bundle T is pulled out, the operation of appropriately moving the slider 30 to evenly support the tube bundle T is repeated, and the tube bundle T is completely pulled out from the shell A to support the tube bundle T in the state shown in FIG. 7. In this state, if the bogie main body 10 is landed by removing the bogie fixing arm 18 from the saddle part S, the tube bundle T can be loaded to travel.

On the other hand, when the loaded tube bundle T is unloaded from the carriage main body 10, the beam 32 is removed from the movable frame 20 in advance and retracted, and then the carriage main body 1 is moved by the outrigger 14.
0 is raised, and as shown in FIG. 8, two or more support bases D that are smaller than the cutouts when viewed in plan below the cutouts 10A.
Is placed and the trolley body 10 is lowered. Then, the support D passes through the cutout portion 10A to receive the tube bundle T, and the tube bundle T
Are lifted from the sliders 30, each slider 30 is moved from the movable rail 26 to the front rail 28A and the rear rail 2.
8B, respectively, and retracted from the cutout 10A.

Further, the carriage main body 10 is raised while the tube bundle T is placed on the support base D, and the carriage main body 10 is lifted to a position higher than the upper end of the tube bundle T. Next, the fixing bolt 53
All are removed, the movable frame 20 is moved to the fixed rail 24 side along the guide member 22, and then the carriage main body 10 is again moved.
Land. Then, the wheels 12 are oriented in the width direction of the trolley body 10, and the trolley body 10 is cut into the cutout portion 1 as shown in FIG.
It is made to run on the side opposite to the open side of 0A and separated from the tube bundle T. It is also possible to reverse the above work.

According to the tube bundle loading / unloading device having the above-described structure, it is not necessary to unload or load the tube bundle T from the carriage main body 10 by using a crane, so that the time required for loading / unloading the tube bundle T can be shortened. You can Further, in the working process, the tube bundle T is always supported stably, so there is no risk of hitting something and damaging the heat transfer tube.
Highly safe for workers. Further, the space height required for the work can be reduced, and the work can be easily performed even in an environment in which an obstacle exists above.

Further, since the slider 30 of this embodiment travels smoothly along the rails 24, 26, 28A, 28B, the retracting operation of the slider 30 can be performed quickly and with high reliability, and the handle 70 can be operated. It is possible to deal with tube bundles T having different diameters by the operation of, and there is also an advantage that the versatility is high.

Next, FIGS. 10 to 13 are views showing a second embodiment of the present invention. Reference numeral 110 denotes a rectangular trolley body, which is provided with wheels (traveling means) 112 one by one in front and rear, and is capable of steering and driving all four wheels. Operation consoles 116 and 118 are installed on the sides of the carriage main body 110. Further, on the bogie main body 110, the same outriggers 114 as those described above are vertically attached in the vicinity of each wheel 112 and in the center of the bogie.

A wire 122 is attached to the front end of the carriage main body 110.
Winding mechanism for winding wire (Means for loading and unloading long objects)
120 is installed and, although not shown, the trolley body 1
10 is also provided with a tube bundle insertion mechanism for inserting the tube bundle T into the shell A.

A rectangular opening 124 is formed in the center of the carriage main body 110 along the longitudinal direction. As shown in FIG. 1, the opening 124 has a size that allows the tube bundle T to pass in the vertical direction while maintaining the horizontal state. On both sides of the opening 124, a pair of rails 126 are attached to the upper surface of the carriage main body 110 in the front-rear direction,
Between these rails 126, a plurality of (two in the figure) sliders (long object supporting means) 128 are spanned in the carriage width direction,
Each can be moved forward and backward. Slider 1
28 is the same as the slider 30 of the above-mentioned embodiment.

On the other hand, a U-shaped notch 130 is formed at the center of the front end of the bogie main body 110 so that interference with the pipes and protrusions can be avoided when the bogie body 110 approaches the heat exchanger. On both sides of the notch 130, the carriage main body 110 is provided.
Is provided with a dolly fixing mechanism 132 for detachably connecting to the saddle portion S that supports the shell A. further,
At the front part of the trolley body 110, the lid of the shell A is hooked 13
A chain block 34 for suspending at 6 is provided (only FIG. 11 is shown).

In order to use the carrying-in / carrying-out device having the above-described structure, first, the bogie main body 110 with the wheels 112 grounded.
And then stop by aligning the center lines with each other in front of the shell A, lowering the legs 114A of each outrigger 114, lifting the carriage main body 110 and fixing it to the ground, and the upper end of the slider 128 inside the shell A. The tube bundle T should be slightly lower than the lower end. Then, each carriage fixing mechanism 132 is operated to firmly connect the carriage main body 110 and the saddle portion S.

Next, the lid of the shell A is removed using the chain block 134, and each slider 128 is attached to the rail 12.
6 to move to the shell A side, and the winding mechanism 120
The tube bundle T is gradually pulled out by the
It is placed at the support position indicated by the chain double-dashed line at 0.

Next, below the supported tube bundle T, FIG.
As shown in (2), two supporting carriages 180 smaller than the opening 24 in plan view are arranged and positioned so as to be located closer to the center of the tube bundle T than the sliders 128. Each of these support carriages 180 has two pairs of wheels 182, is free to travel in any direction, and has a concave portion for accommodating the tube bundle T formed on its upper surface. The tube bundle support height of each support carriage 180 is
When the trolley body 110 is lowered to the lowest, it is higher than the tube bundle support height by the slider 128, and when the trolley body 110 is raised to the highest, the tube bundle T mounted on the support carriage 180 is lower than the lower surface of the trolley body 110. It is set to be low.

After the support carriage 180 is arranged as described above, the carriage main body 110 is lowered to the lowest position as shown in FIG. Then, the supporting carriage 180 passes through the opening 124 and lifts the tube bundle T, so that the slider 128 is retracted to the front and rear positions (non-supporting positions) separated from the opening 124, and again, the carriage main body 110.
To the highest position. Then, the tube bundle T remains on the support carriage 180, so that the support carriage 180 and the carriage main body 11 together.
Pass under 0, move to the washroom, and support cart 18
Necessary inspection and cleaning may be performed while it is placed on 0.

In the above description, after the tube bundle T is pulled out, the support carriage 1 is immediately moved without traveling the carriage body 110.
80, but instead, after pulling out the tube bundle T, the carriage fixing mechanism 132 is removed from the saddle part S, the wheels 112 are landed, the carriage main body 110 is run, and the carriage main body 110 is moved to the washing place and then supported. It is also possible to transfer the tube bundle T onto the carriage 180. Further, the tube bundle T for which necessary treatments such as cleaning have been completed can be returned to the inside of the shell A by performing the above operations in reverse order. The tube bundle carrying-in / carrying-out device having the above structure can also obtain the same excellent effects as those of the first embodiment.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that the structure may be changed as necessary. For example, in the above embodiment, the slider 3
Although 0 and 128 are manually moved, a slider moving mechanism equipped with a motor or the like may be attached to automate the slider operation.

Further, the wheel 12 may be fixed to the leg of the outrigger, in which case the trolley body 1
The trolley body 10 can be run with 0 being raised, and the trolley body 10 is raised after lowering the tube bundle T,
It becomes possible to evacuate. Furthermore, the present invention is not limited to the tube bundle T, but can be used for the purpose of carrying any long object.

[0051]

According to the first aspect of the present invention, when loading and unloading a long object on the main body of the carriage by the horizontal object loading and unloading device, first, the movable rail is moved to a position continuous with the front rail and the rear rail. In addition, the long object supporting means is moved to the long object supporting position on the movable rail. In this state, the front end of the trolley body is placed toward the long object to be carried in and out, and the trolley body is raised to match the height of the long object. Next, the long object loading / unloading means is actuated to move the long object onto the notch, and the long object is placed on the long object supporting means. In this state, if the trolley body is lowered, it is possible to run by loading long objects.

When the long object is unloaded from the trolley body, the trolley body is raised by raising the trolley body and arranging a long object support base smaller than the cutout portion in plan view below the cutout portion. To drop. Then, the long object supporting base passes through the notch and receives the long object, and the long object is lifted from the long object supporting means, so that each long object supporting means is moved from the movable rail to the front rail and the rear rail. Move to and retract from the notch. Further, the trolley body is lifted while the long object is placed on the support table, and the trolley body is lifted to a position higher than the long object. Next, the movable rail is moved to the fixed rail side along the guide means, the carriage body is landed again, and the carriage means is caused to travel to the side opposite to the open side of the cutout portion from the long object. Let them go away. It is also possible to reverse the above work.

On the other hand, when loading a long object to the main body of the trolley by the horizontal long object loading / unloading device according to the second aspect of the present invention, first, the front end of the trolley main body is directed toward the long object to be loaded / unloaded. After the placement, raise the trolley body to match the height of the long object. After moving the long object supporting means to the supporting position above the opening, the long object carrying-in / out means is operated to move the long object to the supporting position, and this is placed on the long object supporting means. .
In this state, if the trolley body is lowered, it is possible to run by loading long objects.

When the long object is to be unloaded from the bogie main body, the bogie main body is raised, and then the long object support bogie or the like is arranged below the supporting position to lower the bogie main body. Then, since the long object supporting carriage passes through the opening and supports the long object, the long object supporting means is moved to the unsupported position, and the carriage main body is lifted again. As a result, since the long object remains on the support carriage, the long object is moved together with the support carriage under the carriage main body. It is also possible to reverse the above work.

According to the horizontal long object loading / unloading apparatus of the first or second aspect, since it is unnecessary to unload or load the long object from the main body of the carriage by using the crane, the long object is unloaded. It is possible to reduce the time required for. Further, since the long object is always stably supported in the working process, there is no possibility of hitting something to damage the heat transfer tube, and the safety for the worker is high. Further, since the long object can be operated while always kept horizontally, the space height required for the work can be reduced, and the work can be easily performed even in an environment in which an obstacle exists above.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a device for carrying in and out a horizontal long object according to claim 1 of the present invention.

FIG. 2 is a side view of the device.

FIG. 3 is a side view showing a support structure of a movable rail of the device.

FIG. 4 is a plan view showing a support structure of a movable rail of the device.

FIG. 5 is a front cross-sectional view of a slider (long material supporting means) of the same device.

FIG. 6 is a side view of the slider.

FIG. 7 is a plan view showing a tube bundle loading / unloading operation by the apparatus.

FIG. 8 is a plan view showing a tube bundle loading / unloading operation by the apparatus.

FIG. 9 is a plan view showing a tube bundle loading / unloading operation by the apparatus.

FIG. 10 is a plan view showing an embodiment of a horizontal elongated object loading / unloading device according to claim 2 of the present invention.

FIG. 11 is a side view of the same device.

FIG. 12 is a plan view showing a tube bundle loading / unloading operation by the apparatus.

FIG. 13 is a plan view showing a tube bundle loading / unloading operation by the apparatus.

FIG. 14 is an explanatory diagram of a conventional tube bundle withdrawing and inserting operation.

[Explanation of symbols]

 A shell S saddle part T tube bundle 10,110 bogie main body 10A notch part 12,112 wheels 14,114 outrigger (elevating means) 20 movable frame 22 guide member (guide means) 24 fixed rail 26 movable rails 28A, 28B front rail and rear Rails 30,128 Slider (Long object support means) 32 Beam 34 Wire hoisting mechanism 124 Opening 126 Rail 132 Carriage fixing mechanism

Claims (2)

[Claims] 1. A trolley body having a U-shaped notch through which a horizontally arranged long object can pass in the vertical direction, and a trolley body provided on the trolley body can be run in its longitudinal direction or width direction. Traveling means, elevating means provided on the bogie main body for raising and lowering the bogie main body, and long length provided on the bogie main body for loading or unloading a long object to be transported to a support position above the notch. Object loading / unloading means, a pair of guide means provided along the front end edge and the rear end edge of the cutout portion in the vehicle width direction, and both ends of the guide means are suspended between the guide means. A movable rail that is supported in the direction and is movable over the entire width of the cutout portion, and a front end and a rear end of the movable rail with the movable rail positioned at the open side edge of the cutout portion. Continuously extended at each end A front rail and a rear rail that includes a fixed rail provided along the inner side of the side edge of the notch,
The movable rail, the front rail, and the rear rail, and two or more long object supporting means that are hung between the fixed rail and the carriage in the width direction and are movable in the front-rear direction of the carriage. A device for loading and unloading horizontal long objects. 2. A trolley body having an opening through which a horizontally arranged long object can pass in the vertical direction, a traveling means for traveling the trolley body provided on the trolley body, and a trolley body for the trolley body. An elevating means for elevating and lowering, a long object loading and unloading means provided on the trolley body for loading and unloading a long object to be transported to and from a support position above the opening, and on the trolley body. A long object supporting means that is movably provided between a supporting position and a non-supporting position separated from the opening, and that is capable of horizontally supporting a long object in a state of being arranged at the supporting position. A device for loading and unloading horizontal long products.