WO1997035755A1

WO1997035755A1 - Truck with roller

Info

Publication number: WO1997035755A1
Application number: PCT/JP1996/001592
Authority: WO
Inventors: Hideo Kato
Original assignee: Kyuseki Kogyo Co., Ltd.
Priority date: 1996-03-25
Filing date: 1996-06-12
Publication date: 1997-10-02
Also published as: KR19990008367A; JPH09256642A; TW305009B; AU6015296A

Abstract

In executing a dismantling method of cutting a side wall of a tank from the bottom plate, temporarily supporting the side wall and spirally cutting the side wall from the lower end toward the upper end to remove cut pieces. The temporary supporting of the side wall and shifting of the support points can be safely performed while saving the labor and shortening the term of work. Mounted right above the front and rear axles (11) of a trolley are rollers (14) which are rotatable under a vertical load of an object to be carried, and the heights of the front and rear rollers (14) are adjusted in accordance with the gradient of the object being carried.

Description

Details

1. Title of invention

Minecart with mouth

2. Technical Field

The present invention relates to a trolley with a roller. Specifically, a method of dismantling a cylindrical storage tank (hereinafter referred to as a tank) (a spiral dismantling method) described in Japanese Patent Application Laid-Open No. 5-280204 is implemented. The present invention relates to a trolley with a roller, which is suitable for use when performing a trolley.

3. Background technology

Generally, when replacing the tank bottom plate, a part of the tank load is supported, but reinforcing steel and lugs are welded to the side wall of the tank, and that part is supported by jacks or the like. In doing so, a considerable number of jacks must be placed around the tank, and the coordination of the operations is important, which is dangerous, expensive, and requires a large number of personnel.

For example, Japanese Unexamined Patent Publication (Kokai) No. Sho 62-1855965 discloses that the lower part of the side wall of a tank is vertically divided by a spiral of one round and a cutting line connecting the beginning and end of the spiral. After the rotation support member that rotatably supports the upper part of the storage tank is interposed in the part, the storage tank including the stepped part of the cutting line is rotated while the upper part of the storage tank is rotated so that the stepped part of the cutting line approaches. A method of sequentially cutting the upper side wall in a shape extending the spiral is described.

According to the above method, since the upper side of the storage tank is supported by interposing a rotation support member instead of being supported by a general jack, there is no need for cooperation work of the jack, and there is no danger. The place where the fire is used can be limited to one place near the ground.

However, in the disassembly method described in Japanese Patent Application Laid-Open No. 62-185595, it is not easy to interpose a rotation support member on a cut portion of a spiral. It is not easy to rotate the upper side of the storage tank. Furthermore, it is not easy to always match the upper side of the storage tank and the lower side of the storage tank along the entire circumference. In contrast, in the disassembly method described in Japanese Patent Application Laid-Open No. 5-280204, the side wall of the tank is cut off from the bottom plate, and the side wall is temporarily supported by a jack or the like, and the lower end is removed. It cuts spirally from the side toward the upper end to remove the cut pieces.

According to this method, the work is performed near the ground, so that the work can be performed safely.In addition, since there is no need to build a scaffold, the cost is low, and even when there are other structures around, Further, since the lower end of the removed portion of the side wall is supported by the balance of the entire tank, it is not necessary to interpose a rotation support member or rotate the upper side of the storage tank, so that the operation can be easily performed.

Japanese Patent Application Laid-Open No. 5-280204 proposes that when performing the tank disassembly method, the 侧 wall is temporarily supported by a trolley with a conveyor equipped with a roller conveyor. I have.

However, if a trolley with a roller-conveyor is used when the disassembly method described in Japanese Patent Application Laid-Open No. 5-280204 is used, each roller of the roller conveyor bends and cannot withstand the load and is deformed. In practice, some minecarts with roller conveyors could not be moved while temporarily supporting the side walls, and jacks were used to temporarily temporarily support the side walls, and the minecart was moved during that time. In this way, when the jack is temporarily supported by the jack, the side wall support point on the upper side of the storage tank may be displaced or deformed to some extent, which may cause a lack of stability. In addition, the jack had to be moved and re-installed as the tank was cut, which was troublesome and time-consuming.

Therefore, an object of the present invention is to perform a disassembly method in which a side wall of a tank is cut off from a bottom plate, the side wall is temporarily supported, and a spiral is cut from a lower end to an upper end to remove a cut piece. Another object of the present invention is to provide a trolley with a roller that can safely and reliably move a support point while temporarily supporting a side wall, and can reduce labor and time.

4. Disclosure of the Invention

Means for solving the problems of the present invention are as follows.

First, the vertical load of the load is placed directly above each axle of a minecart with front and rear axles. It is attached rotatable mouth one color while withstanding heavy, and adjusting in response to the gradient of the take with height the load object before and after the roller, the roller Tsuketo 0 Tsu I3 ₀

Second, the roller mounting height of the roller is adjusted by a liner (or a hydraulic jack) inserted between the roller roller bearing and the bogie. Attached minecart.

Adjustment of the roller mounting height can be performed not only by the liner but also by a hydraulic jack.

The roller that can rotate while withstanding the vertical load of the load object should rotate the rotating shaft that has sufficient strength to support the side wall of the tank that is the load object so that it rotates under the vertical load. What if it was supported by bearings?

The roller should be wide enough to be able to cope with a slight displacement or deformation of the tank near the side wall support point.

In addition, a plurality of trolleys with rollers equipped with a roller that can rotate while withstanding the vertical load of the object to be loaded is provided immediately above each axle of a trolley with axles at the front and rear. Attach couplers before and after the bogie, connect via the couplers, adjust the mounting height of each roller of the trolley with each roller according to the gradient of the load, disperse the vertical load You can also receive.

Further, a tow truck with a tow winch may be connected to the head of the dolly with rollers instead of the rollers, and the whole of the connected dolly with rollers may be moved by the tow truck.

Next, the operation of the minecart with a roller will be described together with the tank disassembly method described in Japanese Patent Application Laid-Open No. 5-280204.

After the side wall of the tank is cut off from the bottom plate, the side wall is spirally cut and removed from the lower end side to the upper end side. Supporting.

When the number of removed portions increases, the tank is tilted so that a portion of the removed portion contacts the bottom plate due to the balance of the entire tank, and the tank is supported at the lower end of the removed portion. In order to facilitate the removal work, it is necessary to maintain a small gap between the side wall of the cutting point and the bottom plate, so that the load on the side wall is not transmitted directly to the bottom plate. For this purpose, a roller trolley equipped with both supporting means and moving means is adjusted to the height of the roller in accordance with the slope of the cut line on the side wall, and the side wall is supported near the cutting point. As it progresses, it is moved sequentially near the cutting point.

This movement is carried out, for example, by pulling with a towing minecart. The mouth of a minecart with a roller rotates while sharing the load above the tank at the lower end of the side wall. The timing of this movement should be such that the side wall at the side wall cutting point does not contact the bottom plate.

Compared with the temporary support method using a jack, the operation of this trolley with rollers eliminates the need for complicated work such as jacking and jacking down, and the side wall cutting work can be performed continuously only by operating the towing trolley. It is especially effective and helps to improve the efficiency of dismantling work.

In the minecart with the roller of the present invention, after the side wall of the tank is cut off from the bottom plate, a disassembly method is performed, in which the side wall is temporarily supported and spirally cut from the lower end side to the upper end side to remove cut pieces. In this case, the temporary support of the side wall and the movement of the support point can be performed safely and reliably, and the labor and time can be reduced. In particular, the larger the tank, the greater the effect compared to the jack method, the greater the safety, and the lower the cost.

5. Brief description of the drawings

FIG. 1 is a schematic side view of a truck with a mouthpiece according to the present invention.

FIG. 2 is a schematic front view of the dolly with a roller of the present invention.

FIG. 3 is a schematic view showing an example of using the minecart with a roller of the present invention.

In the figure, 1 is a tank, 2 is a side wall, 3 is a bottom plate, 4 is a cut line, 5 is a planned cut line, 6 is a horizontal joint, 10 is a minecart with rollers, 1 is an axle, 1 is wheels, Reference numeral 13 denotes a trolley, reference numeral 14 denotes a roller, reference numeral 15 denotes a roller bearing, reference numeral 16 denotes a coupler, reference numeral 17 denotes a liner, reference numeral 20 denotes a rail, and reference numeral 21 denotes a sleeper. 6. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic side view of a trolley with a roller of the present invention, FIG. 2 is a schematic front view of a trolley with a roller of the present invention, and FIG. 3 is a schematic diagram showing an example of use of the trolley with a roller of the present invention.

In this example, the trolley with roller 10 is provided with a tank 1 (see FIG. 3) directly above each axle 11 of a bogie 13 having wheels 12 mounted on both ends of the front and rear axles 11. Roller 14 is mounted via a roller bearing 15 so that it can rotate while withstanding the vertical load on the side wall 2 of the roller 2.

FIGS. 1 and 3 show an example in which the front trolley 10 with rollers and the rear trolley 10a with rollers are connected via a coupler 16 and used. The vertical load by the side wall 2 of the tank 1 can be dispersed and received by the minecart with the roller.

Rollers 14 that can rotate while enduring the vertical load of the load load the rotating shaft that has sufficient strength to support the side wall 2 of the tank 1 so that it can rotate under the vertical load. Is supported by roller bearings 15 through.

The width of the roller 14 is such that the tank 1 can cope with a slight displacement or deformation near the support point of the side wall 2.

The mounting height of the roller 14 is set to the slope of the cut line 4 at the lower end of the side wall 2 of the tank 1 by the liner 17 inserted between the roller bearing 15 of the roller 14 and the carriage 13. Shall be combined.

In addition, in order to cope with the slope of the cut line 4 at the lower end of the side wall 2 of the tank 1, the front trolley 10a with the roller on the rear is The height of a is getting lower.

1 and 2, reference numeral 20 denotes a rail that is combined with wheels 12 attached to the four corners of the bogie 13, and reference numeral 21 denotes a sleeper on which the rail 20 is laid.

As shown in FIG. 1, the state in which the side wall 2 is temporarily supported by the trolley 10 with a roller will be described. The trolley 10 with a roller installed at the outer peripheral end of the bottom plate 3 (see FIG. 3) is a sleeper 2 1 The roller 14 directly supports the lower end of the side wall 2 on the rail 20. Here, the lower end of the side wall 2 shows a state where a slope is provided.

Referring to FIG. 2, a state in which the side wall 2 is temporarily supported by the trolley 10 with a mouth will be described. The trolley 10 with a roller includes a roller 14 and a lower end of the side wall 2. The side wall 2 is supported by adjusting it with the liner 17 so that there is no gap between it and the rail 20.

Since the rollers 14 are slightly displaced in the diameter direction of the tank 1 when the side walls 2 descend, the width of the rollers 14 that directly support the load is increased to balance the truck 10 with rollers. I try to keep.

Although illustration is omitted, in this example, a tow truck with a tow winch is connected to the beginning of the truck with a mouth 10a instead of the mouth 14 and the tow truck is connected. In this way, the entire connected trolley with a mouthpiece is moved.

Although not shown, depending on the weight of the entire tank 1, two or more trolleys with rollers 10 can be connected by the coupler 16 to distribute the load per unit.

Next, the operation of the above-described trolley with rollers will be described with reference to FIG.

First, after separating the side wall 2 of the tank 1 from the bottom plate 3, make a spiral cut from the lower end of the side wall 2 to the upper end. The incised pieces are removed.

Thereafter, the cutting is started again in a spiral shape, and the next cut piece is removed in the same manner as described above.

When the cut portion of the cut piece is small, support the entire tank 1 at the lower end of the side wall 2 except the cut portion.

In FIG. 3, reference numeral 6 denotes a horizontal joint of the side wall 2 of the tank 1.

In this way, after repeated removal of the cut pieces by spiral cutting, in order to facilitate the next cutting, considering the balance of the entire tank 1, as shown in FIG. At 10, the lower end of the side wall 2 is temporarily supported.

At this time, the trolley with roller 10 is mounted on the sleeper 2 1 and the rail 2 laid after the side wall 2 is cut off from the bottom plate 3, and the height of the rollers 14 is adjusted by the liner 17 to the side wall 2. After adjusting it to match the spiral gradient at the lower end of, install it.

Then, when the planned cutting line 5 is cut, the trolley 10 with the roller 10 is moved in the direction in which space is created by removing the cut pieces, while allowing the trolley 10 with the roller to share a part of the load of the side wall 2. Move.

At this time, due to the balance of the entire tank 1, a part of the removed portion of the side wall 2 descends so as to contact the bottom plate 3, but the height of the roller 14 of the trolley with roller 10 is changed to the cutting point of the side wall 2. Since the load of the tank 1 is not applied to the lower end of the side wall 2 in the vicinity, the work of cutting and removing the side wall 2 is easy. At this time, the load of the entire tank 1 is distributed and applied to the bottom plate 3 and the rollers 14 of the trolley 10 with rollers. As the removal of the side wall 2 progresses, the entire tank 1 except for the bottom plate 3 moves slightly so that the contact point between the removed portion of the side wall 2 and the bottom plate 3 moves along the outer peripheral end of the bottom plate 3, so-called miso. The movement is similar to the sliding movement.

In FIG. 3, a two-dot chain line indicates a cut line of the side wall 2 that is to be removed next after the trolley 10 with the roller is moved.

By repeating the above cutting operation, the side wall 2 is gradually cut and removed spirally from the lower part to the upper part, and the disassembly of the tank 1 is completed.

Claims

The scope of the claims

1. A roller that can rotate while bearing the vertical load of the load is mounted directly above each axle of a trolley that has front and rear axles, and the mounting height of the front and rear rollers is adjusted according to the slope K of the load. Trolley with roller 0

2. The minecart with a roller according to claim 1, wherein the mounting height of the roller is adjusted by a liner (or a hydraulic jack) inserted between the roller bearing and the carriage.