JPH0423156Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a temporary support mainly suitable for use in formwork support and the like.

(Conventional technology) Pipe supports with trestles and jacks are used for formwork shoring that supports slab formwork and beam formwork in buildings, etc., and pipe supports are used in buildings with low floor heights. Although it is widely used, when the step height is high, a conventional pipe support with jacks built into a round pipe is insufficient in strength, so a gantry is often used. As a result, the work space under the slab becomes extremely narrow, resulting in a significant drop in work efficiency.In addition, the gantry that makes up the shoring is heavy and difficult to handle, and transporting, assembling, and dismantling it is troublesome and requires a lot of work. In this case, many construction difficulties were involved, such as the need for scaffolding to erect the shoring.

(Problems to be solved by the invention) In view of the above-mentioned conventional circumstances, the present invention improves the conventional pipe support to provide high strength, easy transportation and handling, and secures a large work space without taking up much space. The purpose of the present invention is to provide a temporary support that can improve work efficiency, can be easily and firmly connected to each other, and can form a temporary structure with high strength and rigidity.

(Means for Solving the Problems) The configuration of the present invention will be explained with reference to the drawings corresponding to the embodiments. At both ends of the provided square pipe 1, the end faces protrude into an umbrella shape 5a.
A steady rest tube 4 having a seat plate 5 with a concave portion 5b formed on its protruding surface 5a is inserted and fixed, a support plate 8 is fixed to one end, and an adjustment nut 12 is attached to a threaded portion 10. The threaded rod 7 of the screwed jack is inserted into the square pipe 1 through the steady rest pipe 4, and the adjustment nut 12 has an umbrella-shaped end surface of the seat plate 5 on the side in contact with the seat plate 5. 5a is characterized in that an umbrella-shaped inclined surface 12a is formed which is recessed corresponding to the shape of the slanted surface 5a.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 is a square pipe, which is approximately square in cross section, with protruding ridges 2, 2 at the four corners, and on each of the four sides, there are a number of through holes at intervals in the longitudinal direction of the square pipe 1. Holes 3, 3 are provided facing each other. A steady rest pipe 4 having a diameter suitable for loosely inserting a screw rod of a jack is installed at both ends of the square pipe 1 over a required length. Specifically, the steady rest pipe 4 has an end surface protruding 5a in an umbrella shape at one end, a recess 5b formed in the protruding surface, and a presser plate 6 inscribed in the square pipe 1 protruding. A seat plate 5 is provided, and as shown in the figure, a presser plate 6 is provided.
is inserted into the square pipe 1, and the seat plate 5 is fixed to the end face of the square pipe 1 by welding or the like.

Reference numeral 7 denotes a screw rod of a jack, to which a support plate 8 is fixed together with reinforcing plates 9, 9 at one end, and a threaded portion 10 is formed over almost the entire length from the other end. An adjusting nut 12 having a rotating handle 11 projecting thereon is screwed onto the threaded portion 10. This adjustment nut 12 is
The seat plate 5 is placed on its lower surface, that is, on the side in contact with the seat plate 5.
An umbrella-shaped inclined surface 12a is formed which is recessed corresponding to the umbrella-shaped protruding surface. Therefore, since the adjustment nut 12 and the seat plate 5 engage with each other through the umbrella-shaped unevenness 5a, 12a, it is easy to center the screw rod 7 when inserting it into the steady rest tube 4, and the recess 5b
The formation of this reduces the friction between the adjustment nut 12 and the seat plate 5, and the recess 5b has a good heat retention effect.
The adjustment operation by rotating the adjustment nut 12 can be performed easily. Two screw rods 7 of this jack are prepared for the square pipe 1, and the screw rods 7, 7 are installed by inserting them into the steadying pipes 4, 4 provided at both ends of the square pipe 1, respectively. It has become a thing.

Therefore, with one support plate 8 in contact with the floor and the square pipe 1 erected, if you turn the adjustment nut 12 screwed onto the lower threaded rod 7, the square pipe 1 will be aligned with the threaded rod 7. It will move up and down, and
By turning the adjustment nut 12 screwed onto the upper threaded rod 7, the upper threaded rod 7 moves up and down with respect to the square pipe 1.

FIGS. 4 and 5 show an embodiment in which a plurality of temporary supports of the present invention are connected.

Since the square pipe 1 is provided with through holes 3, 3 facing each other on each side thereof, the clamp 13 is attached using the through holes 3, 3. As shown in FIG. 4, the clamp 13 is a conventionally known type that connects a receiving metal fitting 13a and a holding metal fitting 13b so as to be openable and closable, and clamps a steel pipe 14 with a bolt-nut 13c. A bolt 15 is connected to the square pipe 1, and the bolt 15 is passed through the through holes 3, 3 of the square pipe 1, and is fixed by tightening with a nut 16. The clamps 13 can be attached to a suitable number of suitable locations by using any of the through holes 3 provided in the square pipe 1. Therefore, as shown in FIG. 5, for example, by sandwiching the steel pipe 14 for connecting the clamp 13 attached to the square pipe 1, the temporary supports of the present invention can be connected to each other to form a temporary structure, and the entire support As a result, the strength and rigidity can be greatly increased.

(Function) Generally, the temporary support of the present invention is constructed by transporting the square pipe 1 and the screw rods 7 of the jack separately, and inserting the screw rods 7 into both ends of the square pipe 1 at the site. . The height can be adjusted using the lower or upper adjusting nut 12 depending on the construction situation.
This can be done by appropriately rotating the . On the support plate 8 at the upper end, beam materials supporting the slab formwork, girders supporting the beam formwork, etc. are usually supported. When removing the formwork after pouring concrete, the height of the temporary support can be lowered and removed by rotating the adjustment nut 12.

(Effects of the invention) As explained above, the temporary support of the invention has a large section modulus and is not only resistant to compressive force, but also has a large section modulus, as it allows screw rods to be inserted into both ends of the square pipe. Strong against bending and buckling,
Therefore, it is possible to form long objects that are lightweight and have great strength.Moreover, the configuration in which the square pipe and jack can be freely connected and separated, and the configuration in which the square pipe has jacks at both ends, makes it easy to transport and handle, and makes temporary construction work easier. Can be done efficiently.

In addition, with the square pipe and the jack, the seat plate of the steady rest pipe and the adjustment nut engage with each other with an umbrella-shaped unevenness, so it is easy to center the threaded rod when inserting it into the steady rest pipe, and the concave part The formation reduces friction between the adjustment nut and the seat plate, and the concave portion of the seat plate provides a good heat retention effect, making it easier to perform jacking operations by rotating the adjustment nut.

In addition, square pipes have many through holes spaced apart in the longitudinal direction, so by using these to attach connecting clamps and clamping steel pipes between them, multiple temporary supports can be easily installed. They can also be combined to form a strong shoring structure.
As a result, it is no longer necessary to use gantry structures, which are large and heavy and difficult to transport and handle, as well as constricting work space, making construction easier and more efficient. It has many advantages such as.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing one embodiment of the temporary support of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig.
The figure is a side sectional view showing the main parts of a square pipe, Figure 4 is a side sectional view showing a state where a clamp is attached to the square pipe, and Figure 5 is a front view showing an example in which a plurality of temporary supports of the present invention are connected. . 1... Square pipe, 3... Through hole, 4... Steady rest pipe, 5... Seat plate, 5a... Umbrella-shaped protruding surface, 5b
... recess, 7 ... threaded rod, 8 ... support plate, 12 ...
...Adjustment nut, 12a...Umbrella-shaped inclined surface, 13...
... Clamp, 14 ... Steel pipe, 15 ... Bolt, 1
6...Natsuto.

Claims (1)

[Scope of utility model registration request] A steady rest consisting of a rectangular pipe with a number of through holes spaced apart in the longitudinal direction on each side, and a seat plate with an umbrella-shaped end surface protruding from both ends and a recess formed in the protruding surface. Insert and fix the pipe, and insert the threaded rod of the jack, which has a support plate fixed to one end and an adjustment nut screwed into the threaded part, into the square pipe through the steady rest pipe, and the adjustment nut has the above-mentioned screw rod. A temporary support for formwork shoring, etc., characterized in that an umbrella-shaped inclined surface is formed on the side in contact with the seat plate, which is recessed in correspondence with the umbrella-shaped end face of the seat plate.