JPS6151112B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tank elevating device suitable for use when elevating, for example, an oil tank or the like, particularly when repairing the foundation or replacing the bottom plate of a tank or the like that has unevenly settled.

Conventionally, in order to raise a tank, a tank bracket 30 is attached to the lower part of the outer circumference of the tank side plate as shown in Figure 13.
After installing an appropriate number of the above-mentioned jacks, perform the first jack up using the manual hydraulic jack 31, maintain the height using an appropriate temporary support material such as a wooden board 32, and then lift the above-mentioned jacks. A widely used and well-known method is to once remove the jack, then stack the planks 32 as shown in the figure at approximately the same height as the lifting height from the first jack up, replace the jack on top of the planks, and then repeat the second jack up. .

However, since this method involves repeating the process of stacking wooden boards and placing the jack on top of them, not only is the jack itself unstable and dangerous, but the larger the tank, the more the wooden boards, etc. Since the amount used is large, the purchase and transportation costs increase, and the use of heavy materials poses risks during transportation, making it difficult to work quickly.

As a result of various studies aimed at solving the above-mentioned problems, the present inventors succeeded in devising a tank lifting device suitable for carrying out work safely and quickly, and completed the present invention.

That is, the present invention loosely fits hollow struts with a diameter slightly smaller than the inner diameter of the through holes into the through holes of a plurality of brackets arranged in a row along the circumferential direction at the lower part of the outer periphery of the tank, and a jack is provided at the lower part of the struts. A dowel pin hole is formed in the built-in support column in the axial direction, and four piston guide grooves (hereinafter referred to as grooves) of a certain length are formed in the circumferential surface of the column in opposite directions, and the groove has a cross section of + Each of the extending ends of the shaped piston is loosely fitted so as to be vertically movable, and the piston has a pin hole in the upper surface of the piston whose inner diameter is the outer circumferential surface of the pillar and whose diameter is slightly larger than the pin hole of the pillar in the center of the body. With flange 2
This invention relates to a tank elevating device in which split sleeve pipes are fitted oppositely and removably.

The configuration of the present invention will be explained below with reference to the drawings.

In the figure, reference numeral 1 indicates a steel tank main body, and reference numeral 2 indicates a plurality of steel brackets arranged along the circumferential direction at the lower part of the outer periphery of the tank main body 1. There is a bracket pin hole 4 in the center of the side surface that communicates with the through hole 3, and a plurality of engagement holes (not shown) that correspond to the pin holes 18 and 19 of the two-part sleeve flanges 16 and 17 described later near the bottom through hole 3 of the bracket 2. The lower end faces of the bracket 2 form the same horizontal plane as shown in the first figure. Reference numeral 5 denotes a hollow steel column (hereinafter referred to as column), which is loosely fitted into the through hole 3 of the bracket 2, and a short tube 5' having a built-in jack 9 of the same diameter as the column 5 is inserted through the flanges F, F at the bottom thereof. The short tube 5' is fastened and fixed with bolts 26 and nuts 27, and the lower bottom surface of the short tube 5' is erected on the base plate 22 (see FIGS. 2A and 3). Alternatively, the short pipe 5' may not be connected to the support column 5 by a flange, but the support column itself may be made long and a jack may be incorporated in the lower part thereof. This support 5 also has a plurality of pin holes 6, 7, 8,...n (see Figures 3 and 5, however, 6, 7, and 8 are shown in this figure) that penetrate inside and outside in the axial direction in the body wall. ) are penetrated at intervals equivalent to one stroke of the jack 9, and a plurality (four grooves) of piston guide grooves (hereinafter referred to as grooves) 12 are provided at the bottom thereof at a length equivalent to one stroke of the jack 9. The pistons 10 are provided oppositely to the center of the groove 12, and the extending ends of the pistons 10 having a ten-shaped cross section protrude into the grooves 12 in a loosely fitted manner as shown in the fourth figure. It allows for free vertical movement.

The lever piston 10 is integrally formed with a piston flange 13 having a plurality of pin holes 14 formed therethrough (see FIG. 12). Reference numeral 15 denotes a two-part sleeve pipe (hereinafter referred to as sleeve pipe) with flanges 16 and 17 whose inner diameter is the outer diameter of the support column 5, and a pin hole 14 penetrating the piston flange 13 is formed on each peripheral edge of the flanges 16 and 17. While providing a plurality of pin holes 18 and 19 with the same diameter,
Pin holes 20, 21 (support pin holes 6, 7, 8, . . . in the pillars) penetrate inside and outside the center of each body of the sleeve pipe 15.
piston flange 13
When a sleeve pipe (half-cut) 15 is fitted on the outer periphery of the support 5, or when the sleeve pipe 1
5 are arranged opposite to each other on the outer periphery of the strut and overlap each other, and when the sleeve pipe and the strut are engaged, the pin connection is advantageous. In the figure, 23 is the first engagement pin, 24 is the second engagement pin, 25 is the vertical engagement pin, 26 is the bolt, 27 is the nut, 28
is a hook for lifting a column.

Since the present invention is constructed as described above, in order to put it into practice, first, each of the plurality of brackets 2 arranged in a row along the circumferential direction at the lower part of the outer periphery of the tank main body 1 is fitted with a support 5 through its through hole 3 as shown in the figure. A piston flange 13 integrally formed with the piston 10 is connected to the lower part of the piston flange 10, and each ten-shaped extending end of the piston is projected from a groove 12 provided in the support column so that the piston can move vertically. After the piston is inserted, the lower end surface of the piston is brought into close contact with the end surface of the ram 11 of the jack (hydraulic jack in this figure) 9 (see FIGS. 5 to 11).

Next, the operation shifts to the jack up operation, but before shifting to this operation, operate the jack 9 to adjust the level of the jack 9 so that the upper surface of the piston flange 13 and the lower surface of the bracket (tank) 2 are in even contact with each other. (See Figure 5). Thereafter, the following sequence is continued one after another.

(1) By operating the jack 9 to raise the ram 11, the bracket 2 is raised via the piston 10 using the column 5 as a guide (see Fig. 6), and the pin hole 4 of the bracket 2 is aligned with the column 5.
When the position of the pin hole 6 is reached, the No. 1 engagement pin (hereinafter referred to as No. 1 pin) 23 is inserted as shown in the figure, and the weight of the tank main body 1 is borne on the support column 5 via the bracket 2 (6th pin). (see figure).

(2) The piston 10 is lowered by operating the jack 9 to lower the ram 11, and when the piston returns to its old position (height), a jack 9 is created between the piston flange 13 and the lower surface of the bracket 2. (7th stroke)
(see figure), after fitting the two-split sleeve pipe 15 to the circumferential surface of the support column 5, the pin holes 18 of the upper sleeve flanges 16, 17,
19 and an engagement hole 29 (see FIG. 12) drilled near the lower surface through-hole 3 of the bracket 2 are tightened and fixed with a nut 27 via a bolt 26 as shown in FIG.
A vertical pin 25 is inserted to connect the pin holes 18, 19 of the piston flange 13 with the pin hole 14 of the piston flange 13 to connect the two-split sleeve flange and the piston flange. However, this vertical pin 25 is simply inserted and is not tightened with a nut 27.

Since the bracket 2 and the flange 13 of the piston 10 are connected via the sleeve pipe 15, the weight of the tank main body 1 can be supported by the jack 9, so the No. 1 pin 23 that was inserted earlier can be pulled out. (See Figure 8).

(3) By pulling out the No. 1 pin 23, the bracket 2 can be raised. Therefore, by operating the jack 9, the bracket 2 can be raised via the piston 10 and the sleeve pipe 15 (see Figure 9). pin hole 20,
21 reaches the pin hole 6 of the strut 5, the No. 1 pin 23 is inserted into the hole as shown in FIG. burden.

(4) After that, as in the previous case (described in item (2)), operate the jack 9 to lower the ram 11, and the piston 10 will lower to its original position (height), and the piston flange 13 and sleeve pipe 15 will be lowered. A gap (dimension) of one stroke is created between the lower surface of the cylinder and the lower surface of the cylinder (see Fig. 10). A second sleeve pipe 15 is fitted onto the circumferential surface of the support in this area as before, and after tightening the nut 27 via the bolt 26 and setting it with the vertical pin 25, the third step of jacking up is performed.

By repeating such operations, the tank main body 1 can finally be raised safely and smoothly to a desired height (in this figure, the pin hole n of the support column). This state is shown in FIG. In this case, in order to further improve the safety of the tank main body 1, the first pin 23 is inserted through the pin holes 20, 21 of the sleeve pipe 15 and the pin hole 6 of the support column 5, as shown in the figure, and the pin hole n of the support column is inserted. By inserting a No. 2 engagement pin (hereinafter referred to as No. 2 pin) 24 through the bracket pin hole 4, the weight of the tank main body 1 is supported by the support column 5 only through the bracket 2.

In this way, the foundation of the tank itself is repaired and other necessary works are carried out, and when these works are completed, the tank body is jacked down, but in this case, the sleeve pipes 15 should be removed one by one, contrary to the above-mentioned jack up procedure. For example, the main body of the tank will gradually descend and safely reach the corrected foundation,
Complete all desired construction work.

As explained in detail above, the present invention provides hollow struts that fit loosely into the through holes of a plurality of brackets arranged circumferentially at the lower part of the outer periphery of the tank main body, and a jack is built into the lower part of the strut. In addition, when the piston moves up and down by a jack operation, a sleeve pipe that circumscribes the outer peripheral surface of the column is removably fitted between the upper end surface of the piston and the lower surface of the bracket, and is pushed by a jack built in the lower part of the column. Since the lifting force can be converted into a force for pushing up the outer circumference of the column via the sleeve pipe, the jack is always in a low position by combining the up-down mechanism and the support mechanism, allowing safe jack operation.
In addition, since the mechanism itself is simple and easy to operate, it has excellent workability and can be expected to shorten the construction period, which is a unique effect.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view showing a state in which a bracket and other necessary members are attached along the outer periphery of the tank, FIG. 2A is a partially enlarged perspective view of FIG. 1, and B is an enlarged perspective view of the sleeve pipe, Fig. 3 is a schematic explanatory view showing the proposed mechanism, Fig. 4 is an enlarged perspective view showing the piston part, and Figs. FIG. 12 is a schematic explanatory diagram showing an outline of the configuration of the present invention, and FIG. 13 is a schematic explanatory diagram of an example conventionally employed when raising a tank. 1...tank main body, 2...bracket, 3...through hole provided through the bracket, 4...pin hole provided in the bracket, 5...post, 6, 7, 8,...n...pin hole provided through the post, 9 ... Jacket, 10... Ten-shaped piston, 11... Jacket ram, 12... Piston guide groove, 13... Piston flange, 14... Same pin hole, 15... Sleeve pipe, 16, 17... Sleeve flange, 18, 19... Same pin hole. , 20, 21
...Pin hole penetrated through the sleeve pipe body, 22...
Base plate, 23... First pin, 24... Second pin, 25... Vertical pin, 26... Bolt, 27... Nut, 28... Hook, 29... Engagement hole on bottom surface of bracket, 32... Wood board.

Claims (1)

[Claims] 1. Hollow struts with a diameter slightly smaller than the inner diameter of the through holes are loosely fitted into the through holes of a plurality of brackets arranged circumferentially at the lower part of the outer periphery of the tank main body, respectively,
In addition, a jack is built into the lower part of the column, and the column is provided with axially extending pin holes at regular intervals, and four piston guide grooves of a constant length are provided on the circumferential surface of the column in opposite directions to the center. , each extending end of a cross-sectional + shaped piston in the extending direction is loosely fitted into the groove so as to be able to move up and down, and the outer circumferential surface of the support is the inner diameter of the upper surface of the piston, and the pin hole of the support is located in the center of the body. A tank elevating device characterized in that flanged two-split sleeve pipes each having a pin hole of a slightly large diameter are fitted oppositely and removably.