JPH05844U - Height adjuster - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Supporting construction works such as building structures and temporary formwork equipment, and adjusting and arranging them vertically or horizontally. [Structure] An upper frame 16 having an inverted U-shaped cross section, in which upper end edges of both side walls of an underframe 10 having a U-shaped cross section are formed on a slanted linear cam 11, while sliding on the cam 11 to move up and down. The lower end edges of both side walls are formed on the same inclined edge as the cam 11. The cover frame 20 fixed to the outer surface of the upper frame 16 is provided with a ridge 23 on the top wall, the lower portions of both side walls are overlapped with the outer surfaces of both side walls of the underframe 10, and one side wall of the overframe 20 is formed with one of the underframes 1. A slanted guide long hole 24 is provided for moving the cover frame 20 vertically with a bolt 12 protruding outward from the side wall, and a nut 15 is screwed to the bolt 12 to tighten the cover frame 20 to a desired height position. It is characterized by doing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a height adjusting device used during construction work, and more particularly to a height adjusting device which holds an assembled rebar, a temporary formwork and various equipments in a vertical direction or a horizontal position while supporting them.

[0002]

[Prior art]

 Conventionally, when constructing reinforced concrete columns for buildings, a formwork with a square cross section surrounding the assembled rebar was placed upright on the foundation slab and the vertical direction was visually checked by applying an honest ruler with a plumb bob to the formwork. By adjusting the degree of wedge insertion between the foundation slabs, or by rotating the screw that is screwed into the wooden casing to adjust the height of the lower end of the formwork and lowering the side edges to adjust to the swing. It was fixed upright in the vertical direction. Furthermore, when installing equipment such as pumping pumps, electric motors, and water tanks on the floor slab, the anchor bolts of the floor slab are provided with bolt holes on the base, and wedges and seat plates are placed under the base. While collimating with a rod-shaped level or rubber tube level, adjust the degree of wedge insertion to hold the equipment horizontally, and then set the mortar, and when the mortar solidifies, tighten the nut with the base inserted in the anchor bolt. And installed the work.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, the height adjusting means for temporarily holding the vertical or horizontal position of the work such as the formwork or the fixture is provided in the work place, and the wood and metal pieces are ridden. The pieces are used as appropriate, and no technical ideas have been proposed. Therefore, there are drawbacks such as damage and destruction during construction, and inadvertent misalignment movements that require repeated height adjustment operations.

An object of the present invention is to provide a device that has a strong supporting force to withstand the load of a construction, has a simple and reliable operation for adjusting the height, and does not move accidentally. Is.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, in the device of the present invention, a lightweight channel steel material or a steel plate is cut and bent by a press machine. The underframe of the device forms a cam consisting of a straight upper edge with U-shaped cross-sections on each side wall. The upper frame, which slides on the cam and moves up and down, has lower ends on both side walls which have an inverted U-shaped cross section and are slanted at the same angle as the cam. The cover frame fixed to the outer surface of the upper frame is formed in an inverted U-shape in cross section, and the lower portions of both side walls thereof reach a position where they are slidably overlapped with both side walls of the underframe. Pressed ridges are formed on the top wall of the cover frame. A guide long hole with the same inclination angle as the cam is drilled on one side wall of the cover frame, and a bolt with a fixed base end is guided on the side wall of the underframe that overlaps the side wall having this guide long hole. It is configured to project horizontally outward through the hole, and by screwing a nut onto this bolt and tightening it, the upper frame integrated with the cover frame is moved and fixed at a desired height position.

[0006]

[Action]

 The case of adjusting the vertical direction of the frame for a reinforced concrete column using the device of the present invention configured as described above will be described. First, the placement position is decided by marking the black line on the foundation slab. After that, in order to prevent the leakage of the poured concrete, four angle steel materials are arranged in a square shape, and two devices are arranged for the angle steel materials facing each other. This device may be welded to the angle steel. The four devices are measured with a transit or level, and the heights of the ridges of the devices are set to the same height, and tightened with nuts. The operating procedure is to loosen the nut, stand the scale staff on the ridge, read the scale with a level machine, and move the cover frame by hand to tighten the nut when the height is aligned. Then set the four devices at the same height. On the other hand, in the mold, four dam plates are nailed to form a dam plate forming body having a substantially square cross section on four devices. Several column clamps, which are assembled in the shape of a cross girder and tightened with wedges, are attached to this barrier plate structure. There is an error in the bottom of the weir body due to the deformation of the weir plate due to the mounting of the column clamp and nailing. On the other hand, the weir board molded body is corrected in the vertical direction by plumb bob or transit, and then the nut is tightened.

The sliding lower end edge of the upper frame which is integral with the cover frame slides along the cam end edge of the underframe. Then, both side walls of the cover frame engage with the outer surfaces of both side walls of the underframe to slide. Therefore, even if a load is applied, the lower slide edge of the upper frame and the cam of the underframe are always aligned vertically and do not slide apart. The ridges that support the work and the lower end of the formwork are firmly formed in the shape of reinforcing ribs so that they will not be damaged or deformed, and the underframe is placed on the foundation slab surface in an inclined manner. Even so, the formwork is always supported linearly by the ridges, so there is no problem in adjusting the height. Furthermore, even if the ridge is moved and adjusted while supporting a heavy construction, the friction is small and the construction does not move accidentally.

[0008]

【Example】

 An embodiment will be described with reference to the drawings. In FIG. 1, although not shown, an assembly rebar for a reinforced concrete column is erected on a foundation slab 1, and four weir plates are provided so as to surround the rebar. A dam plate assembly 3 composed of 2 is vertically arranged by means such as nailing. The dam plate assembly 3 is tightly bound by wedges 5 with the ends of four end pieces 4 interposed therebetween. Furthermore, in order to arrange the weir plate assembly 3, black line markings are made in advance at predetermined positions on the foundation slab 1, and four chevron steel materials 6 for preventing leakage of fluidized concrete are arranged in a square along the marking lines. A pair of height adjusting devices 7 according to the present invention are mounted on or fixed to the angle steel materials 6 facing each other at least. Then, the height of the four devices 7 is adjusted by a transit or a horizontal machine so that they are in the same horizontal plane, and then the weir body assembly 3 is placed.

The height adjusting device 7 may be formed by cutting and molding a lightweight channel steel or steel plate with a press machine, or by casting. As shown in FIG. 2, the present device 7 has an underframe 10 having a U-shaped cross section in which side walls 9 are bent and erected from both side edges of a bottom wall 8, and upper end edges of both side walls 9 are inclined linear cams. 11 is formed. A bolt 12 is inserted from the inside into a hole formed in the central upper portion of one side wall 9 of the underframe 10 and protrudes outward. The head portion 13 of the bolt is firmly fixed to the inner surface of the side wall by welding means or the like, and the washer 14 and the nut 15 are screwed.

The upper frame 16 slidably arranged on the cam 11 of the underframe 10 is formed in an inverted U-shape in cross section by an upper wall 17 and side walls 18 bent downward from both side edges thereof. The 18 lower end edge is formed on the linear lower slide edge at the same inclination angle as the cam 11 of the underframe 10. As a result, the upper frame 16 slides up and down on the cam 11 and moves up and down.

The cover frame 20 fixed to the outer surface of the upper frame 16 is formed in an inverted U-shape in cross section by both side walls 22 bent downward from both side edges of the top wall 21. The top wall 21 is provided with a ridge 23 press-formed in a direction orthogonal to the axis of the device. In order to support the load of the work such as the weir plate assembly, the ridge 23 may have a rib formed on the upper wall 17 of the upper frame 16 that is fitted to the ridge 23 to reinforce. Both side walls 22 of the cover frame 20 extend to a position lower than the lowermost end of the both side walls 18 of the upper frame 16 and slidably sandwich both outer surfaces of the underframe both side walls 9. One side wall 22 has a structure in which a guide elongated hole 24 having the same inclination angle as the cam is formed so that the bolt 12 protrudes outward and the cover frame 20 integral with the upper frame 16 can freely move. Is.

To adjust and fix normally four devices arranged at desired positions at the same height position, loosenly tighten the nut 15 with a wrench and temporarily fix the nut 15 to move the covering frame 20 manually or with a tool. When reaching the height indicated by the level, the nut 15 is tightly tightened. A temporary formwork is placed on the equipment, but if there is a manufacturing height error at the lower end position or if there is a manufacturing height error on the support leg of the electrical equipment, loosen the nut tightening state slightly and use the tool. Adjust the height by hitting with pushing the edge of the covering frame with, and adjust the vertical direction and horizontal position of the work using a level. When the horizontal position of the work such as the formwork is set in this way, mortar is placed so that the mortar is embedded while the device is arranged.

When a heavy work is supported by this device, the sliding lower edge of the side wall of the upper frame is held between the inner side surface 26 of the bolt head 13 and the side wall of the cover frame as shown in FIG. It does not come off carelessly and moves freely. If a reinforcing plate is superposed and fixed to the inside of the other side wall 9 of the underframe and the reinforcing plate is arranged slightly higher than the cam, the side wall of the upper frame is sandwiched between the reinforcing plate and the side wall of the covering frame. It does not fall off by sliding on the cam.

[0014]

【effect】

 Since the present invention is configured as described above, it has the following effects. Since the device of the present invention has an extremely simple structure by the simple processing operation of cutting and bending a light-weight channel steel or steel plate with a press machine, the cost is low and mass production is possible.

Further, since it is held by both side walls of the upper frame cover frame slidably arranged on the cam of the underframe, the inclined cam is not deformed or damaged even when a heavy load of the work is applied. It is possible to reliably adjust a finer height.

Even if the underframe is arranged on the rough surface of the foundation slab in an inclined state, since the work is linearly supported by the ridge, there is no problem in the height adjusting operation. In addition, the ridge has a dome-shaped cross section and slides on the lower surface of the work when the cover frame is moved, so the height is corrected without inadvertent horizontal displacement. As a result, there is a beneficial effect that only the vertical direction and the horizontal position are adjusted quickly and reliably.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a device of the present invention used for installing a formwork for a reinforced concrete column.

FIG. 2 is a partially cutaway exploded perspective view showing a state in which the cover frame is moved and arranged at the highest position on the underframe of the device of the present invention.

FIG. 3 is a partially enlarged perspective view showing a state where a bolt is attached to one side wall of the underframe.

[Explanation of symbols]

 2 Weir plate 3 Weir plate assembly 4 End sill material 6 Light-weight chevron steel material 7 Height adjusting device 10 Underframe 11 Cam 16 Upper frame 20 Covering frame 23 Projection 24 Guide long hole

Claims (1)

[Claims for utility model registration] [Claim 1] Both side walls of an underframe having a U-shaped cross section are provided with cams having slanted straight upper edges, while both side walls of an upper frame having an inverted U-shaped cross section. Is provided with a sliding lower edge having the same inclination angle as the cam so as to be slidably aligned with the cam. Slidably overlaps with each other, and a ridge is formed on the top wall of the cover frame. A height adjusting device, wherein a bolt to which is fixed is inserted and projected, and a nut is screwed to the bolt to tighten the cover frame to the underframe.