JPH0886120A - Steel tower leg installation device - Google Patents

Abstract

PURPOSE: To precisely and easily install a leg of a steel tower in a drilled hole by finely adjusting the center position and inclined angle thereof. CONSTITUTION: A steel tower leg installation device is composed of a stationary base 1, a movable base 2 and a movement adjusting mechanism laid between the former two. The movement adjusting mechanism is adjustable, horizontally in the X- and Y-axial direction, vertically in the Z-axial direction, and in a rotating direction around the A-axis. In the X-axial direction, a torque from an input shaft 10 is transmitted to a movable cam through a rotary shaft 17, and in the Y-axial direction, a torque from an input shaft 10 is transmitted through a rotary shaft 17 to an engaging plate which is therefore moved. In the Z-axial direction, a toque from an input shaft 5 is transmitted to a vertical support member 4 through a rotary rod 6 and a worm 9. In the A-axial direction, a torque from an input shaft 24 is transmitted through a rotary shaft 25 to an engaging block 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel tower leg installation device used for burying steel tower legs for supporting overhead power lines and the like in the ground.

[0002]

2. Description of the Related Art A steel tower for supporting overhead power transmission lines has a considerable height because it supports a power transmission line traveling at a considerable height from the ground, and its legs are safely grounded for safe installation. It is buried inside and hardened with concrete.

When burying the footing in the ground, first, the center position of the tower is set to a predetermined position on the ground by surveying, and burying holes are provided at the approximate positions where the four footing are buried around this center position. The leg material is installed in the buried hole. The bottom of the buried hole is solidified with concrete, and the lower end flange of the leg member having the flange portions at the upper and lower ends is placed on the bottom of the buried hole, and is generally installed at a predetermined angle according to the structure of the tower on the ground.

A small hydraulic jack or the like is inserted between the bottom of the buried hole and the lower end flange of the leg member to adjust the vertical direction, and the lower end flange portion is horizontally swung or tapped, or Adjust the area just below the upper flange by pushing and pulling with a rod, then surround the entire leg with the spine and pour concrete to solidify the whole.

[0005]

As described above, in the conventional installation of steel tower leg members, adjustments in the vertical direction, the horizontal direction, and the inclination (standing, falling) are all performed manually. After adjusting the vertical jack with a hydraulic jack, after the adjustment, the hydraulic jack is removed and the spine is constructed and concrete is poured, so the dimensions of the final finished product may be a little distorted. The leg installation is adjusted with millimeter accuracy, so slight deviations are not allowed.

For this reason, it becomes necessary to disengage the back muscles and push in the hydraulic jack again, but the height of the leg members is about 70 to 100 cm, and the gap between the leg members is not enough for a person to enter. No, it is not easy to do these tasks from a narrow gap.

In view of various problems in the current installation work of the above-mentioned conventional steel tower footing, the present invention roughly positions the foot when installing and fixing the footing in the burial hole. Provided is a tower tower leg installation device that can perform fine adjustment of rotation accurately and easily without entering the buried hole, and can perform fine adjustment and installation work of leg members at a compact, rational and economical cost. Is an issue.

[0008]

According to a first aspect of the present invention, a fixed base, a moving base for supporting a lower end of a steel tower leg member, and a moving base with respect to the fixed base are provided. And a movement adjusting mechanism that supports the movement independently of horizontal, vertical, or rotational movements or a combination thereof, and the movement adjusting mechanism transmits the driving force for each movement. That is, the steel tower leg material installation device including the power transmission shaft is configured.

In this case, the horizontal movement mechanism portion of the movement adjustment mechanism may be horizontally movable in two directions orthogonal to each other.

The horizontal and rotational power transmission shafts of the movement adjusting mechanism may be rotation shafts having a screw portion, and the vertical power transmission shafts may be rotation shafts connected to a gear mechanism. it can.

In any of the above cases, the input shafts are connected to the horizontal, vertical or rotational power transmission shafts of the movement adjusting mechanism, and the respective input shafts are collectively arranged on at least two surfaces of the installation device. It is preferable that each of the input shafts is provided so as to be branched into two so that the input shaft can be operated either vertically or horizontally.

[0012]

In the steel tower leg installation device according to the first aspect of the present invention having the above-described structure, the power is transmitted through the power transmission shaft of the movement adjusting mechanism and can be moved horizontally, vertically, or rotationally. The installation center position of the leg material is obtained in advance by measurement, and the leg material is moved to a predetermined position by horizontal, vertical, or rotational movement according to the deviation between the center position and the actual center of the leg material. Fine tune. As a result, the work of adjusting the installation state of the leg members in the narrow buried hole becomes extremely easy and accurate.

In the second aspect of the invention, the horizontal movement is movable in two orthogonal directions. Therefore, by rationalizing the moving mechanism, it is possible to move to an arbitrary horizontal position in the shortest time.

In the third aspect of the invention, power is transmitted in the horizontal and rotational directions by the rotary shaft having the screw portion and in the vertical direction by the rotary shaft connected to the gear mechanism, and the overall structure is compact and rational, And it is obtained as an economical device.

According to a fourth aspect of the present invention, the input shafts connected to the power transmission shafts are collectively arranged on at least two surfaces of the device and can be operated from either a vertical or horizontal direction.
Therefore, the operation is easy and the centralized operation is possible, and it is not necessary to enter the buried hole for the work, and the operation can be performed freely by means or power from the ground.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall schematic perspective view of the leg material installation device of the embodiment, FIG. 2 is a plan view, and FIG. 3 is a side view seen from an arrow III-III in FIG. Reference numeral 1 is a fixed base, 2 is a moving base, and steel tower legs are installed on the moving base 2, although not shown. The movable base 2 is rotatably and horizontally supported with respect to the fixed base 1,
Therefore, the movement adjusting mechanism 3 is provided between the two bases.

The movement in the horizontal direction is movable in both directions of the X axis and the Y axis which are orthogonal to each other as shown in FIG.
Horizontal movement in one direction, vertical (Z-axis) movement, and rotational movement can be independently moved. Details will be described later.

As shown in FIGS. 2 and 3, the movement adjusting mechanism 3 includes four vertical supporting members 4 for supporting the moving base 2 in the vertical direction (Z axis). Is connected to the movable base 2 and the fixed base 1 via spherical joints 4a and 4b fitted to the upper and lower ends thereof. As shown in FIG. 6, the spherical joint 4b at the lower end has its screw shaft portion 4b.
The b'is supported by being screwed into a central screw hole of a worm gear 4c rotatably supported by the fixed base 1.

The rotational force for moving the vertical support members 4 up and down is concentrated on the four vertical support members 4 from one position, and the input shaft 5 and the horizontal rotary rod 6 connected thereto.
It is distributed and given by. As shown by the dotted line in FIG.
Two parallel rotating rods 6 extending between the two vertical support members 4 are provided, and the two rotating rods 6 are engaged with sprockets 7a provided at appropriate positions to transmit the rotational force.

The input shaft 5 is branched into two so that the rotational force can be applied from either the vertical direction or the horizontal direction like other input shafts described later.

FIG. 4 shows a horizontal movement mechanism in the X-axis direction.
FIG. 4 is a sectional view taken along the line IV-IV in FIG. As described above, the input shaft 10 for the X-axis is branched into two parts 10a and 10b so that a rotational force can be applied from either the vertical or horizontal direction, and the bevel gears 10c at the respective ends are orthogonal to each other. It is attached and engaged through the attachment member 10d.

The horizontally extending rotary shaft 11 connected to the horizontal input shaft 10b is cantilevered by a mounting member 10d fixed to the moving base 2, and is engraved on the outer periphery of the moving base 2 near the center thereof. The movable piece 12 is screwed into the screw. The moving piece 12 does not move itself, but the moving base 2 moves relatively by rotating the rotary shaft 11 with respect to the moving piece 12.

As shown in the partial sectional view taken along the line A--A of FIG. 6, the movable piece 12 has a space formed by cutting two stop plates 13 facing each other near the center thereof. It is inserted in the X-axis so that it cannot move in the X-axis direction. Although not shown, a rotation stopper is provided for the stop plate 13 so that the moving piece 12 does not rotate together with the rotation of the rotary shaft 11.

The outside of the stopper plate 13 is sandwiched by two guide brackets 14 attached to the lower surface of the moving base 2. The guide bracket 14 is cut in the vicinity of the center in the longitudinal direction by a length corresponding to a predetermined moving stroke of the moving base 2. The stop plate 13 is fixedly provided to the intermediate base 15, and the movement of the intermediate base 15 in the X-axis direction is restricted by the guide frame 18.
7 is fixedly provided on a slide member 16 which is movable in the Y-axis direction. The guide frame 18 is fixed to the slide base 19, and the slide member 16 moves between them. The slide base 19 has a bearing 21 with respect to the center column 20.
It is rotatably supported by. The center column 20 is provided substantially at the center of the fixed base 1.

FIG. 5 shows a movement adjusting mechanism in the Y-axis direction.
FIG. 5 is a cross-sectional view taken along the line V-V in FIG. Similarly to the case of the X axis, the input shaft 22 for the Y axis also has two of 22a and 22b.
Bevel gear 22c, mounting member 22d
Have. In this case, the guide frame 18 and the slide base 19 are cantilevered by the bearing 21, and the mounting member 22d is fixed to the other end.

The threaded portion of the rotary shaft 17 is screwed through the threaded hole provided at the center of the slide member 16 so that the rotary shaft 17 can be rotated.
Are engaged with each other, and the rotational force of the input shaft 22 causes the slide member 16
Moves. The engaging block 2 is provided at the lower end of the mounting member 22d.
3 is fixed, and this block 23 is provided with an oval hole 23a for a rotary shaft 25 for rotating the moving base 2 about the center support 20.

FIG. 7 shows a movement adjusting mechanism for a rotating shaft (A axis) for rotating (moving) the moving base 2. The input shaft 24 for the A shaft is also branched into two parts 24a and 24b, and is provided with a bevel gear 24c and a mounting member 24d, and in this case, the mounting member 24d is rotatably supported by a bearing portion 24e.

A extending through the mounting member 24d so as to be supported therethrough.
A rotary shaft 25 for the shaft is engaged with the engaging block 23 in a penetrating manner. As shown in the cross section taken along the line BB, the threaded portion 25a of the rotary shaft 25 is provided in the central screw hole of the spherical body 27 that is rotatably engaged with the recess of the holding member 26 in the engagement block 23.
Are engaged with each other so that the angular deviation can be absorbed even when the rotary shaft 25 crosses the holding member 22d of the input shaft 22 to which the engaging block 23 is attached at a predetermined angle obliquely.

The leg material installation device of the embodiment having the above-mentioned configuration adjusts the installation state of the leg material as follows.

The leg installation device of the embodiment can be driven manually, but in this embodiment, a small electric motor M shown in FIG. 9 is used. The electric motor M is fixed on the horizontal base plate,
Its output shaft is universal joint U, connecting rod R
Are connected to the input shafts of the leg material installation devices, respectively.

Of course, instead of the electric motor M, the length of the connecting rod R may be increased so that the connecting rod R can be operated from the ground, and the following adjustment and drive may be performed.

FIG. 10 shows an overall outline of a method of installation and adjustment using the leg material installation device A. The foot P for the steel tower is buried in the hole H.
Then, the leg material installation device A is installed on the base T in the hole, and the leg material P is installed thereon at a predetermined angle as shown. At this time, the approximate position of the leg member P is set at a predetermined position and near the angle by visual inspection by the worker, but the installation state of the leg member P is accurately adjusted to the support column of the upper tower and the millimeter unit. Need to connect.

Therefore, the supporter S of the leg member P is attached to the adjusting portion D.
The small electric motor M connected to the leg installation device A is adjusted by the adjuster CT for the horizontal, vertical, and rotational movements of the leg P at the lower position. For these adjustments, position data and inclination data are controlled by a control signal from a small personal computer C.

X-axis, Y-axis, Z-axis by the leg material installation device A,
The adjustment in the A-axis direction is performed as follows.

First, in the Z-axis direction, as shown in FIG. 6, by transmitting the rotation of the input shaft 5 through the worms 9 of the four vertical support members 4, the moving base 2 is moved relative to the fixed base 1. Move up and down. The lower end of the spherical joint 4b is prevented from rotating by the fixed base 1, and the movable base 2 can be moved in the vertical direction by the vertical movement of the spherical joint 4b itself. At this time, the moving base 2 moves up and down with respect to the stopper plate 13 together with the guide bracket 14 and the moving piece 12 screwed onto the rotating shaft 11.

Regarding the movement in the X-axis direction, as shown in FIG. 4, the rotational force from the input shaft 10 is transmitted to the rotating shaft 11,
This is performed by relative movement between the rotary shaft 11 and the moving top 12.

Regarding the movement in the Y-axis direction, as shown in FIG. 5, the rotational force from the input shaft 22 is transmitted to the rotating shaft 17,
This is performed by relative movement between the rotary shaft 17 and the slide member 16.

Regarding the rotation in the A-axis direction, as shown in FIG. 8, when the rotational force from the input shaft 24 is transmitted to the rotary shaft 25, the engaging block 23 is pushed and pulled through the tip screw portion 25a, The movable table 2 rotates about the center column 20 via the holding member 22d of the input shaft 22 to which the engagement block 23 is attached.

From the above, it can be seen that the moving base 2 can move with respect to the fixed base 1 in each of the X axis, the Y axis, the Z axis, the A axis, or any combination thereof. For example, when the rotational movement in the A-axis direction is performed while moving in the X-axis and Y-axis directions by a predetermined amount, the center of the moving base 2 does not coincide with the center of the fixed base 1, and therefore the fixed base 1 It will rotate in a state of being displaced from the center of. Therefore, when moving the moving base, it is advisable to select an appropriate combination depending on the position of the center when the movements in the respective axial directions are combined.

In the above embodiment, the screw rod is used as the axis of rotation for linear movement and rotational movement in the X, Y, Z, and A-axis directions, but it is not necessary to use the screw rod for the same movement. Other means can be adopted as long as they can be a means of movement.

For example, the X, Y, and A axes may be moved horizontally by an air cylinder, and only the Z axis may be moved by a screw rod system.

[0042]

As described in detail above, the leg installation device according to the first aspect of the present invention can be operated horizontally, vertically, or rotationally via the power transmission shaft of the movement adjusting mechanism provided between the fixed base and the moving base. Since it is possible to freely move the power transmission shafts or a combination thereof, it is possible to finely adjust the position and rotation of the moving base by rotating each power transmission shaft manually or by the motor driving force. There is an advantage that the work of adjusting is extremely easy and can be finely adjusted accurately.

In the second aspect of the invention, since the horizontal movement mechanism of the movement adjusting mechanism is made movable in two orthogonal directions, the leg members can be finely adjusted to any position in the horizontal direction, and the mechanism can be rationalized.

In the third aspect of the invention, the power transmission shaft of the movement adjusting mechanism is a rotary shaft having a screw portion in the horizontal and rotational directions and a rotary shaft connected to the gear mechanism in the vertical direction. Has a compact and rational configuration, and has the advantage that the device can be configured at an extremely economical cost.

In the fourth aspect of the invention, since the respective input shafts are collectively arranged on at least two surfaces of the installation device and can be operated from either the vertical or horizontal directions, the operation is extremely easy and the operation can be performed intensively. Moreover, even if no worker enters the buried hole, it can be freely operated manually or by power from the ground, which is extremely useful for labor saving.

[Brief description of drawings]

FIG. 1 is an external perspective view of a leg installation device according to an embodiment.

FIG. 2 is a plan view of the above.

FIG. 3 is a sectional view taken along the line III-III of the same as above.

FIG. 4 is a sectional view taken along line IV-IV of the above.

FIG. 5 is a cross-sectional view seen from the arrow VV of the above.

FIG. 6 is a sectional view taken along line VI-VI of the above.

FIG. 7 is a sectional view taken along the line VII-VII of the above.

FIG. 8 is an explanatory view of the operation of the above device.

FIG. 9 is a schematic diagram of a small electric motor.

FIG. 10 is a diagram illustrating a leg material installation work by the leg material installation device.

[Explanation of symbols]

 1 Fixed Base 2 Moving Base 3 Movement Adjusting Mechanism 4 Vertical Support Member 5, 10, 22, 24 Input Shaft 6 Rotating Rod 7 Chain 8 Bearing 9 Worm 11, 17, 25 Rotating Shaft 12 Moving Top 13 Stop Plate 14 Guide Bracket 15 Intermediate base 16 Slide member 18 Guide frame 19 Slide base 20 Center column 21 Bearing 23 Engagement block

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shiro Matsuo 2-34-1 Honjo East, Kita-ku, Osaka City Stock Company Kindennai

Claims (4)

[Claims] 1. A fixed base, a moving base for supporting the lower end of steel tower leg members thereon, a moving base supported on the fixed base, and independent horizontal, vertical, or rotational movements. Or a combination thereof, and a movement adjusting mechanism for freely moving the combination, and the movement adjusting mechanism includes a power transmission shaft for transmitting a driving force for each movement. 2. The tower tower leg installation device according to claim 1, wherein the horizontal movement mechanism portion of the movement adjustment mechanism is formed so as to be horizontally movable in two directions orthogonal to each other. 3. The horizontal and rotational power transmission shafts of the movement adjusting mechanism are rotation shafts having a threaded portion, and the vertical power transmission shafts are rotation shafts connected to a gear mechanism. The tower tower leg installation device according to claim 1. 4. The input shafts are respectively connected to the horizontal, vertical or rotational power transmission shafts of the movement adjusting mechanism, and the respective input shafts are collectively arranged on at least two surfaces of the installation device. The tower tower leg installation device according to any one of claims 1 to 3, wherein the tower tower leg installation device is provided so as to be branched into two so as to be operable from either a vertical direction or a horizontal direction.