JP2761599B2 - Attitude control method of press-fit well - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the attitude of a press-fit well in which the inclination of the press-fit well is automatically controlled so that the press-fit well can always be laid down.

[Conventional technology]

Generally, in order to sink a press-fit well, a supporting frame is framed on the ground in a tower shape, and a pressure girder is mounted on the supporting frame so as to be vertically movable, and the top end of the well is fixed to the pressing frame. And, in that state, the lower ground is excavated, and after excavation, it is settled by the weight of the well or by press-fitting of a press girder
Further, the same operation is repeated so that another one is stacked on the upper surface of the well, and the laying operation is performed.

[Problems to be solved by the invention]

In the above work, it is necessary to set the well while always supporting the well vertically.However, in general, during the setting work, the worker lowers the inclination of the well, visually observes it with a swing, and determines that the well is tilted. The upper side of the pressure girder fixed to the tip surface of the well was pulled down with a jack etc. connected to the pressure anchor, the top end surface of the well was kept horizontal, and the well was sunk vertically, so it was convenient to feel good momentum It was difficult to lay the well vertically with large errors.

Moreover, since the wells were corrected after being tilted to the extent that they could be visually recognized, the repair work required a lot of time and labor during subsidence, and this was one of the factors that hindered the improvement of work efficiency.

Accordingly, it is an object of the present invention to provide a method of controlling the attitude of a press-fit well in which the above-mentioned drawbacks are eliminated and work efficiency is improved.

[Means for solving the problem]

In order to achieve such an object, the attitude control method of the press-fit well according to the present invention is provided with a pair of columns appropriately spaced apart from each other at the four corners of a flat rectangular fixed frame fixed to the ground, and vertically erected in the same direction, The upper and lower ends of the rod are hung between the columns at the corners, and the position measuring devices are attached to the vertically moving and vertically moving jacks. A fixed beam for mounting the upper end of the well is mounted and fixed on the upper surface of a pair of support beams before and after the bridge, and an inclination measuring device is attached to the fixed beam, and an adjusting cylinder is disposed at an appropriate position surrounding the outer periphery of the well. At the same time, a pressing roller for pressing horizontally toward the center of the outer peripheral surface of the well is attached to the tip of the adjusting cylinder, and when the well is laid down, the measurement data from the position measuring device and the inclination measuring device are respectively controlled by computer. Treated with location and so as to sinking while always the top end face supports a horizontally kept well vertically by automatically controlling the amount of operation of the lifting jacks and adjusting cylinder.

[Action]

A pair of columns appropriately spaced apart from each other at the four corners of the fixed frame are erected vertically in the same direction, and a position measuring device is attached to the vertically movable jacks vertically arranged between the columns. Further, a fixed beam for mounting the upper end of the well is mounted on the upper surface of a pair of front and rear strut beams which are laid between the right and left lifting jacks, and the inclination measuring device is attached to the fixed beam. Further, an adjusting cylinder is arranged at an appropriate position on the outer periphery of the well, and a pressing roller for horizontally pressing the outer peripheral surface of the well toward the center is mounted on the tip of the adjusting cylinder.

Then, when the well is laid, the measurement data from the position measuring device and the inclination measuring device are respectively processed by the computer control device, and the operation amount of each lifting jack and the adjusting cylinder is automatically controlled so that the top end surface is always horizontal. And sunk while supporting the well vertically.

〔Example〕

Hereinafter, an embodiment of the press-fit well attitude control method of the present invention will be described in detail with reference to the drawings.

1 to 4 show a well press-fitting device of the present invention. In the drawings, reference numeral 1 denotes a well which is vertically installed at intervals in the front-rear and left-right directions on the ground in the vicinity of a well W planned to be laid. It is a flat rectangular fixed frame fixed by a plurality of support piles 2, and a pair of columns 3, 3 are appropriately arranged in the same direction at four corners of the fixed frame 1, that is, at front and rear positions of left and right frames 1 a, 1 a. Stand upright at a distance. The adjacent columns 3,
The first through fourth support holes 4a, 4b, 4c, and 4d are opened in the upper and lower portions 3 so as to face each other in the front-rear direction. First and third support holes 4
The distance between a and 4c is the same as the distance between the second and fourth support holes 4b and 4d, and substantially coincides with the length of the rod 6 of the lifting jack 5 described later.

An elevating jack 5 is vertically disposed between the two columns 3, and both ends of the rod 6 for passing the elevating jack 5 are fixed by fixing pins 7 which are removably fitted into the first support holes 4a. The lower end of the rod 6 is supported on a locking member 8b supported on both sides by a fixing pin 7 which is also removably fitted in the third support hole 4c.
A handle is provided on the head of each of the fixing pins 7 for easy insertion and removal.
7a is provided. The upper and lower ends of the rod 6 are provided with respective locking members 8.
Oh, it is pivotally connected by 8 and the connecting pin 9. Further, mounting rings 11a and 11b having insertion holes 10 and 10 formed on both sides thereof are fixed to the upper and lower portions of the main body of the elevating jack 5, respectively.

Reference numerals 12 and 12 denote a pair of front and rear support beams horizontally extending between the columns 3 and 3 disposed on the left and right sides of the columns 3 and 3 erected on the fixed frame 1. Form bifurcated sleeves 13,13 at both ends of 12,12, and support columns 3,3
With the sleeves 13, 13 sandwich the lifting jack 5 between both sleeves 13,
By aligning the insertion holes 10, 10 of the upper mounting ring 11a with the horizontal holes 14, 14 formed in the sleeves 13, 13, and inserting the fixing pins 15, 15 into these, both ends of the support beams 12, 12 are formed. Part is fixed to the upper end of the lifting jack 5. Further, a fixed beam 16 for suspending and supporting the well W by means of bolts or the like is inserted between the support beams 12, 12 horizontally arranged in front and rear. The fixed beam 16 is composed of a ring-shaped support frame 17 having a diameter substantially the same as the outer circumference of the cylindrical well W. Arms 18, 18 extending horizontally from both front and rear sides are provided with the support beams 12, 12, respectively.
The support beams 12 are placed on a pair of brackets 19, 19 protruding from both sides of the upper surface of the support beams 12, and supported by detachable through pins 20.

The rod 6 is located inside the pair of adjacent columns 3,3.
Mounting ring 11b at the bottom of the lifting jack 5 located at the upper end of the
A slightly lower position and the lifting / lowering jack 5 from the position.
Horizontal support plates 21 and 21 are respectively protruded at a position lowered by the same distance as the stroke of
To penetrate. Further, an upper receiving member 24a and a lower receiving member 24b, which penetrate through the vertical holes 23, 23 communicating with the vertical holes 22, 22 at both ends between the two supporting plates 21, 21 located in front and rear, are placed. Vertical holes 22, 23
Into one of the pivot pins 25, 25.
The receiving members 24a and 24b are rotatable around a horizontal plane in the horizontal plane.

In addition, a plurality of support holes 4a, 4b, 4
In addition to the openings c and 4d, a plurality of openings 26 are provided at appropriate positions in the vertical direction, so that the stopper pins 15, 15 can be easily inserted into various places.

An auxiliary frame surrounding the well W on the upper surface of the fixed frame 1
27, a plurality of support brackets 28, 29 arranged on the outer peripheral surface of the well W are provided on the upper surface of the auxiliary frame 27 at different positions up and down, and each of the upper support brackets 28
Support pins 30 which are perpendicular to the outer peripheral surface of the body of the well W are removably attached to (in this embodiment, six at equal intervals), and are penetrated at the same positions as the respective support brackets 28 of the body of the well W. Each of the support pins 30 can be inserted into the plurality of through-holes 31 so as to be freely detachable. An adjusting cylinder 32 is attached to each of the lower support brackets 29 (four at equal intervals in this embodiment), and a well W
In order to guide the well W at the time of supporting press-fitting, a pressing roller 33 for horizontally pressing the outer peripheral surface of the well W toward the center is mounted.

According to the present invention, the position measuring device (rotary encoder) 3 is attached to each of the lifting jacks 5, and the position measuring device 34 is fixed to the body of the lifting jack 5 as shown in FIG. A pinion gear is attached to the tip of a rotating shaft 36 that is attached on a bracket 35 and extends horizontally from one side.
37 are provided. On the other hand, a rack 38 meshing with the pinion gear 37 is vertically attached to one side wall surface of the column 3, and the pinion gear 5 is lowered with the lifting jack 5 as a reference point when the lifting jack 5 is at the uppermost position. 37 rotates, and the descending distance of the lifting jack 5 is measured based on the rotation amount. Also, as shown in FIG.
An inclination measuring device (inclinometer) 39 is attached at an appropriate position on the 16 to measure whether or not the fixed beam 16 is kept horizontal.
The four position measuring devices 34 and the tilt measuring device 39 are electrically connected to the computer control device A, and the computer control device A and the lifting jack 5 are electrically connected.
Alternatively, the hydraulic circuit B for operating the adjusting cylinder 32 is electrically connected.

The present invention has the above-described structure, and firstly, among the support holes 4a to 4d formed vertically on the pair of columns 3, 3, the first support hole 4a located at the upper end and the lower third support hole 4c are provided. Fixing pins 7 are respectively fitted to support the locking members 8a and 8b in the up and down positions, and the upper and lower ends of the rod 6 of the lifting jack 5 are respectively supported on the two supporting members 8a and 8b to support the rod 6 vertically. I do. Then, the lifting jack 5 is positioned at the upper end of the rod 6, and the sleeves 13, 13 at both ends of the support beams 12, 12 are attached to the upper mounting ring 11a by the fixing pins 15, 15, and the well W Is mounted on the support beams 12, 12 and fixed to a fixed beam 16 locked by the connecting pin 9 by means such as bolting. In this state, the lifting jack 5 is actuated to lower the fixed beam 16 along the rod 6.
To press the well W downward and press-fit it into the ground.

At this time, the four position measuring devices 34 rotate while the pinion gears 27 mesh with the racks 38 to measure the descending distances of the lifting jacks 5 one by one, and send the data to the computer control device A. If all of the four descending distances are equal, the work can be continued as it is. For example, if only one of the lifting and lowering jacks 5 attempts to descend earlier or later, the computer controller A sends a hydraulic circuit. B
To adjust the amount of oil into the jack 5,
That is, by moving the lifting jack 5 up or down,
The same descending distance as the other three jacks 5 is maintained. When the well W is about to be inclined, the fixed beam 16 is also inclined, but the inclination measurement data of the inclination measuring device 39 is sent to the computer control device A, and the command from the computer control device A is further transmitted to the hydraulic circuit B. To adjust the hydraulic pressure of the adjusting cylinder 32 at the required position to push the side wall of the well W to correct the well W so that it does not tilt.

When the lifting jack 5 comes to the lower end of the rod 6, the supporting beams 12, 12 are temporarily received by the upper receiving member 24a, and the lifting jack 5 is raised again to mount the lower mounting ring 11.
Each support beam 12, 12 is reattached to b, and the well W is press-fitted. Next, when the lifting jack 5 comes to the lower end of the rod 6, the supporting beams 12, 12 are temporarily supported on the lower receiving portion 24b, and the upper and lower locking members 8a, 8b are respectively moved down by the second and the second lower members. The well W is pressed down to the positions of the fourth support holes 4b and 4d, and the same steps as above are repeated.

As described above, according to the present invention, the inclination of the well W is detected by mounting the position measuring device 34 and the inclination measuring device 39, and the well W can be sunk while being constantly corrected and corrected by computer control.

〔The invention's effect〕

The attitude control method of the press-fit well according to the present invention has the above-described configuration. Unlike the conventional method of visually checking the inclination of the well and correcting them, automatic mounting is performed by computer control by mounting various measuring devices. Since it is detected and corrected if necessary and is sunk while always being kept vertical, there is an advantage that the efficiency of sunk work is remarkably improved.

[Brief description of the drawings]

1 shows an embodiment of a method for controlling the attitude of a press-fit well according to the present invention. FIG. 1 is a front view of a support press-fitting device for a well, FIG. 2 is a plan view partially cut away, and FIG. FIG. 4 is an enlarged view taken along the line XX in FIG. 2, and FIG.
FIG. 5 is a sectional view taken along the line Y, and FIG. 1 ... fixed frame, W ... well, 3,3 ... pillar, 5 ... jack for lifting, 6 ... rod, 12,12 ... support beam, 1
6: fixed beam, 32: adjusting cylinder, 33: pressing roller, 34: position measuring device, 39: inclination measuring device, A
...... Computer control unit.

Claims (1)

(57) [Claims] 1. A pair of columns, which are appropriately spaced apart from each other, are vertically provided in the same direction at four corners of a rectangular frame-shaped fixing frame fixed to the ground. Attach the position measuring device to the lifting jack that is vertically arranged with the ends hooked on both pillars and moves up and down, and on the upper surface of a pair of front and back support beams that are laid horizontally between the left and right lifting jacks. A fixed beam for mounting the upper end of the well is mounted and fixed, an inclination measuring device is attached to the fixed beam, an adjusting cylinder is disposed at an appropriate position surrounding the outer periphery of the well, and an outer peripheral surface of the well is provided at a tip of the adjusting cylinder. When the well is laid down, the measurement data from the position measuring device and the inclination measuring device are processed by the computer control device, respectively, and the lifting jacks and the adjusting cylinder are adjusted. Always attitude control method for press-fitting the well, characterized in that so as to sinking wells maintaining top end surface horizontally while supporting vertically by automatically controlling the operation amount of the loaders.