JPH0469727B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a method for installing leveling pads (hereinafter simply referred to as pads) for leveling the bed when installing machines and equipment on civil engineering foundations. This relates to a device for

(Prior Art) Methods for installing patches can be broadly divided into two. One method is called the dry pad method, and as shown in Figure 4, mortar with a very low water-to-cement ratio and high viscosity is heaped on top of the foundation concrete 201, from which the weak layer on the surface has been removed. On top of that, the thickness is 0.9~1.3
A liner 202 of about cm is placed.

Next, this liner 202 is manually struck with a mallet or the like to sink to a predetermined level. At this time, the top surface of the liner 202 is constantly monitored by a scale staff 203 and an optical level meter 204, so that the level of the top surface of the liner 202 is maintained at a predetermined height with a predetermined accuracy. To ensure the horizontality of the liner 202, generally a bubble level is used and adjustment is made by hitting with a mallet or the like.

The other method is to monitor the upper surface of the liner 206 with liner set bolts 205 at appropriate locations using a scale staff 203 and an optical level meter 204, as shown in FIG. While adjusting the levelness using a spirit level etc., turn the liner set bolt 205 to set it to a predetermined level height. Liner set bolt 20
5 is fixed to the foundation concrete 201 with quick-hardening mortar, etc., and the surrounding area is surrounded by formwork, and the space between the foundation concrete 201 in the formwork and the lower surface of the liner 206 is filled with water with a relatively high water-cement ratio. A large piece of highly fluid mortar is poured to form a patch.

By the way, according to the conventional equipment, the number of workers involved in installing parts is 1 person to operate the optical level meter (transit), 1 person to operate the scale staff, and 1 person to adjust the liner level. A minimum of three people in total are required at the same time.

In addition, in the case of the Dry Pat method, sinking the liner to a predetermined level depends only on the striking force of the mallet, so if the liner is sunk too much and is below the level height, the liner is removed and mortared again. We have to start over from the point of enlivening it.

In addition, the relationship between the amount of sinking of the liner and the striking force of the mallet varies greatly depending on the physical strength of the individual and the composition of the mortar, so controlling the amount of sinking of the liner relies solely on the experience of the individual worker. . There is a shortage of skilled workers with such experience, and it is difficult to secure them.

Furthermore, a bubble level is used to measure the levelness of the liner, but it requires repeating measurements in two directions with a 90-degree angle, and if you have to redo the work if you overshot the liner, it can be very time consuming. The mental and physical fatigue experienced by people is not at all trivial.

(Problems to be Solved by the Invention) The present invention provides a device that is easy to construct and enables accurate installation of leveling pads.

(Means for solving problems) The mechanism of the present invention will be explained according to examples.

As shown in FIG. 1, the present invention is comprised of an optical level meter 1 and a spot leveler device 20. The part leveler device 20 of the present invention includes a tripod 2
A base part 5 which can be tilted by an adjustment dial 4 is provided on a tripod base 3 supported by a tripod base 3, and a tilt angle sensor 6 and a shaft 7 are mounted on the base part 5.
a bearing 8 for holding the shaft 7 and a screw jack 9 for raising and lowering the shaft 7;
A lifting/lowering motor 10 and a handle 11 connected to the shaft of the screw jack 9 are provided.

A liner holding portion 12 is provided at the lower end of the shaft 7, and in the embodiment, a liner 41 made of a steel plate is held by an electromagnet. A scale staff 13 is attached to the upper end of the shaft 7 so that the shaft 7 can rotate in the axial direction.

Further, when a control box 14 for controlling the above-mentioned lifting/lowering motor 10 and electromagnets and displaying signals from the tilt angle sensor is provided, it is convenient for remote control.

(effect) Next, the effects will be described below according to examples.

Install the optical level meter 1 at an appropriate position, and adjust the tripod 2 of the part leveler device to the part installation location 51 where the weak part at the top of the foundation concrete 50 has been removed in advance, so that the shaft 7 is as high as possible. Stand it vertically. Next, while looking at the pointer of the inclinometer 15 in the control box 14, turn the adjustment dial 4 to level the base part 5, and rotate the lifting/lowering motor 10 so that the lower end of the liner holding part 12 is aligned with the part to be installed. The shaft 7 is raised until it is at a suitable position above level height 40.

The liner 41 made of steel plate is held by activating the electromagnetic force of the liner holding part 12, and controlled to a predetermined level while observing the scale staff 13 of the patch leveler device using the optical level meter 1. The control switch 16 of the lift/lower motor 10 of the box 14 is operated to lower the shaft 7.

The relationship between the levels of each device is shown in FIG. 3 and the formula below.

x+L+S=A-t Height of the upper surface of the liner 41 from the installation surface of the leveling device If it is difficult to align the liner 41 by controlling the lift/lower motor 10, adjust it by turning the manual handle 11 connected to the shaft of the screw jack 9.
When the alignment is completed, the liner set bolt 42 provided on the liner 41 is screwed in to fix the liner 41 on the foundation concrete 50 on its own. At this time, if the liner 4 is screwed in too much,
Be careful not to shift or move 1.

In the present invention, positioning is achieved by lowering the shaft while holding the liner by the operation of an electromagnet in the liner holding part, so that the part can be placed more accurately and the work is easier than in the prior art.

A patch formwork 43 is set on the foundation concrete 50, and mortar with relatively low viscosity and high fluidity is poured into the space between the foundation concrete 50 surface and the lower surface of the liner 41 in the formwork 43. After the mortar hardens, the head of the liner set bolt that protrudes above the top of the liner is cut off to complete the installation work.

(Effects of the Invention) The following effects can be obtained by using the present invention. (1)
The number of workers required to install the parts can be two people per one part. (2) Since the parts can be installed simply by operating the machines of each device, skilled workers are not required and the quality of construction is certainly improved. (3) There is no need to redo the work, which reduces the mental and physical fatigue of the workers. (4) The installation time required for each part can be reduced.

Further, the installation according to the present invention can be applied not only to leveling pad installation work but also to other leveling work.

[Brief explanation of the drawing]

Figure 1 A, B, and C are perspective views of embodiments of the present invention;
FIG. 2 is a side view of an embodiment of the present invention, FIG. 3 is a schematic explanatory diagram showing the relationship between level heights in the present invention,
Figure 4 is a schematic diagram of the conventional method (dry pad construction method).
FIG. 5 is a schematic diagram of the conventional method (flow mortar method). 1: Optical level meter, 2: Tripod, 3: Tripod base, 4: Adjustment dial, 5: Base part, 6: Tilt angle sensor, 7: Shaft, 8: Bearing,
9: Screw jack, 10: Motor for raising and lowering, 11: Handle, 12: Liner holding part,
13: Scale staff, 14: Control box, 15: Tilt angle display window, 16: Control switch, 17: Dust-proof bellows, 40: Pat, 41:
Liner, 42: Liner set bolt, 43:
Part formwork, 50: Foundation concrete, 201:
Foundation concrete, 202: Liner, 203:
Scale staff, 204: Optical level meter, 2
05: Liner set bolt.

Claims (1)

[Claims] 1. An optical level meter, a tiltable base part supported by an extendable tripod, a tilt angle sensor and a screw jack for raising and lowering a shaft on the base part, and the screw jack. A leveling pad installation device that is equipped with a motor connected to the shaft of a shaft, and a pad leveler device that has a liner holding section at the lower end of the shaft and a rotatable scale staff connected to the upper end of the shaft. 2. The leveling pad installation device according to claim 1, wherein the angle display of the inclination angle sensor and the operation of the lifting motor are remotely controlled.