KR100760435B1 - Adjustable temporary support - Google Patents

Abstract

An adjustable temporary support is provided to assemble and disassemble each member easily, and to vary the length by coupling a ball support part, an adjustable part, a support part, and a fine adjustable part. An adjustable temporary support comprises a ball support part(A), an adjustable part(B), a support part(C), and a fine control part(D). The ball support part includes support pieces(1a) radially projected toward the center part on an upper surface of a plate(1), ball sheets(1b) of recessed curved surfaces(1c) on the upper surfaces of the support pieces, and wire holes(1h) for fixing the joint balls to the support pieces. The adjustable part has an upper socket pipe(2) formed with upper flanges(2f), a lower socket pipe(4) formed with lower flanges, and adjustable pipes(3) of the center part to be inserted in the upper and lower socket pipes. A plurality of pin holes(2h,3h,4h) fitted to locking pins(p) are alternated on front/rear and left/right main surfaces of the pipes.

Description

Adjustable Temporary Shores {ADJUSTABLE TEMPORARY SUPPORT}

1 is a front view showing the overall configuration of the post of the present invention

Figure 2 is an illustration of the side of the joint ball fixed to the ball support portion

Figure 3 is a side view of the microcontroller of the present invention

Figure 4 is an explanatory view of the operation of the fine adjustment unit

Figure 4A is an illustration of a state supported by the support washer

Figure 4B is an illustration of a state in which the support washer is partially removed by jacking up the hydraulic jack

Figure 4C is an exemplary view of the jack down to lower the support

4D is an exemplary view of a state in which all of the support washers are removed.

Figure 5 is an exemplary side view showing the assembling process of the truss using the post of the present invention

[Description of Signs of Important Parts of Drawing]

DESCRIPTION OF SYMBOLS 1 Plate 1a support piece 1b ball seat 1c curved surface

2: upper socket pipe 3: control pipe 4: lower socket pipe

2h, 3h, 4h: Pin hole 2f: Flange 5: Shore pipe 5f: Flange

5h: Hole (cable hole) 5r: Reinforcement rib 6: Plate

A: ball support part B: elastic control part C: support part D: fine control part

The present invention relates to an adjustable adjustable temporary support (ADJUSTABLE TEMPORARY SUPPORT). More specifically, the present invention relates to a 'stretchable adjustable temporary prop' having a complex function of the basic length of the strut and a fine control as a strut suitable for supporting the joint ball of the truss.

In general, in order to construct a gymnasium, a stadium, other spaceless space structures, the spatial position on the design when assembling the truss by triangularly jointing the space frames such as upper and lower chords and inclined members in a triangle. In order to fix the joint ball on the support, the supporters are erected by standing up the struts of the height of each designated position, and each truss member is connected to the joint balls to assemble the truss, and then the supporters are dismantled.

Recently, there are various forms of large-space structures and construction methods are changing, but props are indispensable elements that cannot be worked without props.

Since the environment of conventional truss construction sites varies, the lengths of struts for fixing the joint ball at designated space positions are different from each other so that the lengths of struts that are used once are almost impossible to reuse, so that many struts are required and the cost of props There was a problem that is quite high. Until now, there has been no concept of a temporary prop that can be flexibly adjusted at the height of the prop.

In addition, when assembling the truss, there should be a gap in the joint hole for joining the engaging end of the truss member, and it is difficult to arrange such a gap flexibly with a conventional fixed support, which makes the truss assembly work inconvenient and inefficient in working efficiency. There was a problem.

After assembling the truss, dismantling the support supporting the joint ball causes a slight deflection phenomenon (a known deflection of about 1/300) due to the load of the truss member. This deflection does not cause any problem because the load of the truss is distributed and the bearing force is balanced when the overall deflection is performed.

However, since the conventional fixed support does not have the elastic adjustment function of the prop itself, the prop cannot be dismantled quietly. When the prop is separated, the bearing capacity of the joint ball is momentarily lost, and the load of the truss is shockingly concentrated to the deflection site where the support capacity is lost. Damage is given to the entire truss. Such damage eventually has the problem of damaging the structural safety of the entire truss.

In addition, when the screw jack is installed to adjust the height of the lower part of the fixed column, the screw jack can be lifted and operated under no load. However, when the heavy load of the truss structure is applied, the screw jack is almost operated by manpower. Since it is impossible to finely adjust the height of the ball joint when assembling the truss, there was a problem that can not be dismantled by the method of lowering the height of the strut little by little after assembling the truss.

SUMMARY OF THE INVENTION An object of the present invention is to provide a support that can be flexibly adjusted to the basic length (height) of the support so that the conventional problems can be fixed and the joint ball connecting and assembling the members of the truss can be accurately fixed to the designated space position.

Another object of the present invention is to provide a support that can be precisely fine-tuned again at the base height of the support and to ensure the stability of the adjusted support so as to more accurately support the joint ball in the designated space position.

Another object is to provide a retractable adjustable post that can be dismantled in a quiet manner without the impact of sag of the assembled truss by quietly dismantling, gradually lowering the height of the post after the truss is assembled. have.

Another purpose is to provide a reusable prop that is dismantled and then re-adjust the length of the prop to a specific height after dismantling the support that has supported the joint ball at different designated heights for each position.

Still another object of the present invention is to easily adjust the length of the strut and to reduce the cost of the strut member by reusing the strut, and to provide a strut (支柱) that can be effectively applied to the strut of various constructions as well as the truss strut. I'm trying to.

The present invention is a hypothetical support that is useful for holding and supporting a joint ball for truss assembly, the support (support) and the ball support for supporting the joint ball (joint ball) of the truss (truss),

The upper socket pipe, which is drilled on the main surface of the pipe at regular intervals, and the adjust pipe and the lower socket pipe in the middle are elastically combined so that the pin is fixed in the pin hole. an expansion and contraction unit fixed to a stretched length to prevent rotation of the adjusted pipe by inserting a (lock pin),

A plurality of strut pipes having a unit length are separated and assembled so that the strut pipe is securely connected to the upper end of the strut pipe to support the strut vertically;

A plurality of guide bolts for fitting an oil jack and a prop washer to the base plate are arranged to be supported by penetrating the flange of the support, and thus the support is adjusted to a basic length. It is characterized in that the combination consisting of a fine (Micro) control unit for fine control more precisely.

The ball support portion, the support piece is projected radially at equal intervals toward the center on the upper surface of the plate, a concave curved ball seat is formed on the upper surface of the support piece and the joint ball placed on the ball sheet formed in the support piece The joint ball is fixed to the support piece by a wire. The ball support is applied only when used as a support for truss.

The expansion control part, the flange formed on the upper end of the plate and the upper socket pipe of the ball support portion is coupled by a fastening screw, the flange formed on the holding pipe of the support portion and the flange formed on the lower end of the lower socket pipe pipe integrally by the fastening screw The control pipe is elastically coupled between the upper and lower socket pipes. As both ends of the control pipe are deeply inserted into the upper and lower socket pipes, the length is shortened. As the both ends of the control pipe are shallowly inserted in the upper and lower socket pipes, the length is increased. Stretch control is possible. The fixing pin can be inserted into the pinhole of the socket pipe and the adjusting pipe in the elastically adjusted position so as to prevent the rotation of the combined pipe and fix it to the adjusted length. This telescopic adjustment portion has the functionality of adjusting the basic length of the entire shore in relation to the length of the shore.

If the upper and lower intervals of the pinholes drilled in the pipe are about 5 cm, for example, the distance between the pin holes on one side is 10 cm, so there is no fear of deterioration of the strength of the pipe material of the expansion and contraction part due to the pin holes. Adjustable

The support portion includes a flange and fastening screw formed at both ends of one or two or more support pipes of a predetermined unit length depending on the height of the support pipe for convenience in carrying and handling. The safety cable is connected to the reinforcing ribs of the flange formed at the upper end of the prop pipe, which can be extended and secured so that the strut can be held vertically safely.

The micro-adjustment part is provided with a hydraulic jack at the center of the base plate to support the center bottom of the lower support pipe, and is arbitrarily jacked up and jacked down so that it can be precisely lifted and adjusted at minute intervals. Six (or eight) guide bolts are arranged to be supported through the flange of the lower support pipe at equal intervals, and each guide bolt has a plurality of U-shaped support washers with a predetermined thickness on the side of the guide bolt. By inserting or extracting into a composite layer, it is possible to stably support and secure the lower end of the strut lifted and adjusted by the hydraulic jack. The fine adjustment range of the strut height depends on the thickness of the support washer.

Since the support washers supported by the support washers are physically and securely fixed thereafter, even if there is a hydraulic fluctuation of the hydraulic jack, the stability of the installed support is very high.

The post of the present invention having the above-described configuration is installed at a designated position in the primary row at a predetermined interval with a concrete base post of the outside according to the design drawing to assemble the truss. The position where the strut is installed coincides with the plane position where the joint ball is placed and the height of the strut coincides with the spatial position where the joint ball is placed on the design drawing. Assemble the length of strut to the height measured by measuring instrument.

The length (height) of the strut consists of the length of the number of assembly of the strut pipe and the adjusted pipe length of the elastic control part. Since the lengths of the posts are different for each point where the posts are installed, adjust the length of the posts individually.

The posts adjusted to a predetermined length are set up in position, the joint ball is placed on the ball support part, and the joint ball is firmly fixed to the support plate of the ball support part by wire.

When the strut is raised, the ball joint is placed in the designated space position on the design by the base length of the strut. Check the error range by measuring the instrument and jack up or jack down the hydraulic jack of the microadjustment section to finely adjust the height of the strut to eliminate the error, and operate the hydraulic jack when the ball joint is in the correct space position. Stop and insert the support washer into the guide bolt to support the bottom of the support. The thickness of the washer is about 6mm by design, and according to the error range, several supporting washers are inserted into the composite layer and fixed. Once the support washer is supported, the stability of the support is secured, and thereafter, even if there is a hydraulic change in the hydraulic jack, the height of the support is not affected. At this time, the safety cable is inclined to be fixed to the ground so that the strut is held vertically.

The joint hole of the ball joint fixed at a predetermined position is directed in the correct direction in which the upper chord, the lower chord and the inclined member of the truss can be coupled, so that the truss member can be fitted. At this time, if a gap is required to insert the engagement end of the truss member into the joint hole and operate the hydraulic jack, raise the support slightly upward to provide a gap between the truss member and the joint ball, and use the gap to joint the engaging end of the truss member. Fit the hole and lower the hydraulic pressure of the hydraulic jack to return the strut to its original height.

When assembling the truss of the roof frame, assemble the truss by standing the first row of struts at regular intervals with the base struts of the edges, and when the truss assembly is completed, again build the second row of struts at the regular intervals with the first row of struts. Assemble by connecting the truss of the row.

When the 2nd row of trusses is assembled, loosen the wires securing the 1st row of joint balls, and remove the props standing in the 1st row.

At this time, the demolition of the landlord needs more attention than when the landlord is raised. In the present invention, by using the function of the micro-adjustment to demolish in a way to lower the height of each strut uniformly little by little.

In the present invention, the strut has the advantage that the height of the strut can be precisely adjusted by the microadjustment means for precisely raising and lowering the height, and finely increasing the height of the strut which is supported by the truss by the microadjustment means little by little. There is an advantage that can be lowered flexibly to lower.

In the present invention, the force of fine adjustment of the height of the support is made by the hydraulic jack and the fine adjustment range is made by the thickness of the support washer. The design thickness of the support washer is 6mm, and when the support was removed, each support washer is lowered by 6mm. Therefore, considering the distance and height between the left and right shores, even if the height of one shore is lowered by 6mm in order, the bearing force of the assembled truss structure does not change much and the load is maintained. none.

Even if the truss structure is assembled as a warning, there is a deflection in the tolerance of the physically authorized tolerance. It is possible to flexibly remove the landlord without giving sag impact. In addition, the assembly truss from which the posts are removed is solidly maintained without deformation of the assembly because the load distribution and connection strength are balanced.

As described above, the functional strut of the present invention can precisely adjust the height of the strut by the microadjustment part at the basic length, and lower the strut little by little in the reverse order even when dismantling to safely damage the strut without damaging the truss structure. Dismantling has the effect of proceeding the assembly work of the truss by reusing rather than discarding the shore.

When using the post of the present invention, the position fixing of the joint ball of the truss is easy and once the height is adjusted, the stability of the support is secured by the support washer so that the hydraulic jack does not have a burden and the reliability of the assembly of the truss is increased.

In addition, it is possible to adjust the basic length of the strut, to adjust the jack up of the hydraulic jack of the microadjustment means, to finely adjust by the jackdown, to secure the strut by the support washer, and to separate the ball support and the telescopic adjuster, the strut and the microadjustment unit. Easy to carry and handle of holding member.

Regardless of the shape of the truss structure, the environment and the topographical conditions of the work site, the props of the present invention can be applied in any case, and the cost of the props can be reduced because it can be repeatedly reused without discarding the props after use. It can be used more effectively as not only a truss support but also a functional temporary support for various constructions.

In the present invention, as shown in Figure 1 in the elastic adjustable temporary support for assembling the truss, the support (S) is a ball support (A) for supporting the joint ball of the truss, several pin holes are alternately up and down on the left and right sides The upper and lower pipe pipes drilled at regular intervals, the control pipe in the middle and the lower socket pipe are elastically coupled so that the elastic control part (B) is fixed to the control length so as not to be twisted using the pin hole and the fixing pin, and the unit length. A plurality of holding pipes can be separated and assembled, and the holding part (C) is vertically secured by a safety cable connected to the upper reinforcing part, and a plurality of guide bolts for fitting a hydraulic jack and a support washer to the base plate. Is coupled to the micro-adjustment portion (D) is arranged to penetrate through the flange of the strut portion to adjust the strut adjusted to the basic length more precisely.

As shown in Figs. 1 and 2, the ball supporting portion A has a support piece 1a protruding radially at equal intervals toward the center of the plate 1 and concave on the top surface of the support piece 1a. The ball seat 1b of the curved surface 1c is formed, and the wire hole 1h is formed in the support piece 1a, and the joint ball JB is made with the wire 1w using this hole 1h. It is tied to the support piece 1a and fixed. Since the curved surface (c) of the joint ball (JB) and the curved surface (1c) of the ball seat (1b) coincide with each other, when the joint ball (JB) is placed on the ball support piece (1), the center of the ball joint (JB) is the ball holder. It is placed in line with the center of (A).

As shown in FIG. 1, the expansion and contraction part B includes a flange 2f formed at the upper end of the plate 1 and the upper socket pipe 2 of the ball support part A, and a fastening screw b and a nut ( n) The fastening screw (b) and the nut (5f) formed integrally by tightening and formed on the lower end of the lower socket pipe (4) and the flange (5f) formed on the support pipe (5) of the support (C). n) Both ends of the control pipe (3) of the middle portion of the middle portion that is integrally coupled by tightening and can be inserted into the upper and lower socket pipes (2) and (4) are respectively inserted and coupled. In the main surface of each pipe (2), (3) and (4), the pin holes (2h) (3h) and (4h) are perforated at regular intervals (by design, 5 cm) in an up and down alternating direction. Insert the fixing pin (p) through the pin holes (2h) (4h,) (3h) (4h) of the upper and lower socket pipes (2) and (4) and the adjustment pipe (3) of the adjusted position so that the nut (n) It is possible to prevent the rotation of the joined pipe by tightening it and fix it with adjustable length.

As shown in Fig. 1, one or two or more pillars C are provided in accordance with the total height of the pillars S, for the convenience of carrying and handling. A plurality of flanges 5f formed at both ends of the shore pipe 5 are integrally extended by fastening screws b and nuts n and are reinforced with ribs 5f formed at the upper end of the shore pipe 5. The safety cable 5c is connected to the hole 5h drilled in 5r, so that the strut S can be erected and held vertically safely.

As shown in Fig. 3, the microadjustment part D has an upper end of the hydraulic jack 6j at the center of the base plate 6 to support the center bottom of the lower flange 5f of the lower support pipe 5, and is optionally jacked up. (jack up), jack down (jack down) to be installed finely adjustable, six (or eight) guide bolts (6b) around the lower flange of the lower support pipe (5) at equal intervals It is arranged to be supported by the nut (N) tightening through 5f, each guide bolt (6b) is provided with a plurality of support washers (6a) of U type having a predetermined thickness (6mm by design) guide bolt ( It is possible to stably support the lower end of the support (S) lifted and adjusted by the hydraulic jack (6j) by inserting or extracting the composite layer from the side to 6b).

Operation of the present invention configured as described above is as follows.

(Holding installation)

According to the design drawing of the truss to be assembled as shown in FIG. 5, the struts S of the primary row 1L are erected at a predetermined distance from the concrete base pillars CT at the edges. The top height of the support (S) is a measured length from the space position (a) where the joint ball (JB) is placed on the design to the floor where the support is installed.

 The length adjustment of the support (S), taking into account the adjustment range of the expansion and contraction portion (B) of the support at the measured height (H) of the space position (a) where the joint ball is placed, the remaining height unit of the support (C) One or two length pipes (5) in length are connected to each other in a predetermined number to form the basic height of the support, and the remaining height is the middle of the upper and lower socket pipes (2) and (4) of the elastic adjusting part (C). By adjusting the expansion of the adjustment pipe (3). At this time, the adjustment distance of the control pipe 3 is adjustable in the 5cm unit because the vertical gap of each pin hole (2h, 3h, 4h) of each pipe (2) (3) (4) is 5cm. Therefore, the adjusted basic length (l) of the support (S) is equal to the height (H) of the space position (a) in which the joint ball is placed at the bottom (g) or an error occurs in the range of 5cm. At this time, if the basic length (ℓ) of the strut (S) than the height (H) is out of the 5cm range fine adjustment of the strut height is impossible so that the length of the adjustment pipe (3) of the elastic control unit (C) to always be below the 5cm range You need to adjust

    At this time, if the height of the space position (a) is Hcm and the adjusted basic length of the support (S) is ℓcm, Hcm-ℓcm = ≤ 5cm.

 Using a suitable tool such as crane, the strut (S) adjusted to the basic length is set up vertically in the first row (1L). And jack up the hydraulic jack (6j) of the fine control unit (D) to accurately adjust the height of the shore to lift the shore to the height. At this time, the nut (N) of the guide bolt (6b) penetrated through the lower flange (5f) of the holding pipe (5) to freely lift the lower flange (5f) of the holding pipe (5) from the guide bolt (6b). Finely adjust the strut (S) to the correct height, and then insert the support washer (6a) into the guide bolt (6b) into the gap between the lower flange (5f) of the strut pipe (5) to support the strut. Then, the nut N is firmly tightened and the safety cable 5c is tensioned in the inclined direction to be fixed to the ground so that the strut is vertically maintained. The joint ball JB is placed on the ball seat 1b made of the concave curved surface 1c formed on the support piece 1a of the ball support part A, and the hole 1h is formed in the support piece 1a. Tighten the joint ball (JB) by using it to assemble the truss member to the ball joint.

At this time, if a gap is needed between the joint balls to join the truss member, operate the hydraulic jack (6j) to raise the support (S) slightly up to provide a gap for inserting the engaging end of the truss member into the joint ball (JB). The gap is used to fit the engaging end of the truss member to the joint hole, and then the hydraulic jack 6j is jacked down to maintain the support post S at its original height.

Since the assembling method of the truss is not the gist of the present invention, various assembling methods may be used.

When the truss is assembled in this way, a load is applied to the support (S), but since the support washer (6a) supports the lower part of the support (S) physically and safely, even if the hydraulic pressure of the hydraulic jack (6j) fluctuates, there is no influence on the fixing of the support. It is supported safely without giving.

(Demolition of the landlord)

 When the assembling of the truss T is completed by using the strut S of the first row 1L, the strut S is erected again in the same manner as the first row at the predetermined position of the front secondary row 2L. Assemble T) continuously. When the truss structure of the 2nd row 2L is assembled, the wire 1w which fixed the joint ball JB of the 1st row 1L is loosened, and the support | pillar S of the 1st row 1L is separated and demolished. In the present invention, it is characterized by dismantling the height of the strut little by little.

4 is a side view of the fine control unit (D). 4A is an exemplary view showing a state in which the support is stably supported by the support washer 6a. In this state, since the stability of the shore is secured, the truss can be supported safely.

As shown in Fig. 4B, the nut N fastened to the guide bolt 6b is slightly loosened and the hydraulic jack 6j is jacked up to release the pressure on the support washer 6a. Then, one support washer 6a is taken out. In FIG. 4B, the gap from which the support washer is extracted is shown to be larger than the thickness of one washer, which shows that the gap is generated.

 Next, as shown in Fig. 4C, one support washer 6a is extracted and the hydraulic jack 6j is jacked down again so that the support S is supported by the next support washer 6a and the nut N is tightened again. This strut S maintains a safe state in the lowered position by one thickness of the support washer 6a.

  This process removes only one support washer 6a sequentially from the first column of reference columns to the last column of the first row.

 The design thickness of the support washer 6a is 6mm, and when the support washer 6a supporting each support is removed at the time of dismantling of the support, it is lowered by 6mm. Therefore, even if the height of one shore with the support washer removed is reduced by 6mm at the horizontal height between the left and right shores, the bearing capacity of the assembled truss (T) does not change significantly and the load is maintained. There is no focus.

4D is an exemplary view of a final state in which the support washers 6a of all the support posts S in the first row are extracted and the support posts are lowered to the occupation height of the fine control unit D. FIG. When the strut gradually descends gradually to reach a predetermined position, the ball supporting portion A of the upper end of the strut S supporting the truss is isolated from the truss T. The truss assembled in the process of gradually lowering the height of the struts can be safely dismantled by using a crane or a suitable mechanism because the authorized range sag quietly without impact.

In the present invention, the micro-adjustment part (D) of Figure 3 is useful for finely adjusting to a predetermined height precisely by setting up the strut (S), and when the demolition of the strut (S) to the reverse (로) to fine control It is useful to disassemble flexibly without damaging the truss by lowering it little by little and safely. Demolished props will be reused over time with appropriate length adjustments.

 In the present invention, the use of the truss support has been described, but in the case of using it as a support for other construction, it is also included to use the temporary support that can be flexibly adjusted by separating the ball support part A and combining another appropriate mechanism there. .

Since the strut of the present invention is composed of a ball support portion, a stretch adjusting portion, and a strut portion and a microadjustment portion, the disassembly and assembly of each member is easy, and the strut portion can be coupled to any length desired by the stretch control portion and the strut portion. The props can be applied to any type of truss type, working environment and floor, and reusable props can be used to reduce the cost of props and increase convenience.

The expansion and contraction part of the upper and lower socket pipes and the intermediate control pipes are inserted into each other so that the pinholes are formed at predetermined intervals on the front, rear, left and right sides of the main surface of each pipe so that the elastic adjustment of the basic length of the prop is possible. It is easy and maintains a strong support force during the use of the strut without any fear of deteriorating the physical strength of the pipe due to the pinhole.

In addition, since the microadjustment part consists of a hydraulic jack for lifting the support and a guide bolt for supporting the support washer to support the support, it is possible to precisely control the height of the support easily by the jack up and jack down of the basic length of the support by using hydraulic pressure. Do.

In particular, since the height of the struts can be sequentially lowered by the adjustment means of the microadjustment unit, it is possible to dismantle the struts without giving the damage of the deflection impact to the truss when dismantling the struts supported by the truss.

The strut of the present invention is significantly improved in assembling and stretching control of the basic length, fine adjustment at the basic length, separation of free members, coupling, stability of the strut and ease of operation, and more useful as temporary struts of various constructions. There are several effects available.

Claims (5)

In the stretchable support, a ball support (A) for supporting the joint ball of the truss is formed at the upper end of the support, and a plurality of pin holes are formed in the upper and lower left and right sides and the upper socket pipe which is drilled at regular intervals at regular intervals. The control pipe and the lower socket pipe of the elastically coupled to the elastic adjustment portion (B) is fixed to the anti-rotation and adjusted length of the pipe adjusted by the pin hole and the fixing pin is formed on the top of the unit, A plurality of strut pipes of length can be separated and assembled to form a strut (S), and a safety cable is connected to the hole of the reinforcing rib formed in the upper end of the strut to support the strut vertically (C). Is formed in the lower part of the support, and a plurality of guide bolts for fitting the hydraulic jack and the support washer in the base plate are arranged in relation to the flange of the support and tightened to the basic length. The more precisely control the holding (S) to finely adjust the portion (D) is elastic adjustable holding hypothesis, characterized in that configured on the lower end of the coupling holding. The ball supporting portion (A) of the curved support (1c) according to claim 1, wherein the support piece (1a) protrudes radially at equal intervals toward the center of the upper surface of the plate (1) and is concave on the upper surface of the support piece (1a). Stretchable adjustable temporary post characterized in that the ball seat (1b) is formed and a wire hole (1h) for fixing the joint ball in the support piece (1a). According to claim 1, wherein the expansion and contraction portion (B), the upper socket pipe 2, the upper flange (2f) formed, the lower socket pipe (4) formed the lower flange (4), upper and lower socket pipe ( 2) (3) is inserted into the adjustment pipe (3) of the middle portion of the thickness can be inserted. Multiple pinholes 2h, 3h and 4h to prevent rotation of the combined pipes and to hold the fixed pins p for fixing the adjusted lengths. A flexible adjustable temporary prop, characterized in that it is formed at regular intervals on the main surface at an alternating angle. The method of claim 1. The strut portion C is formed by a plurality of strut pipes 5 having a constant unit length, which are integrally extended by fastening the flange 5f formed at both ends thereof and fastening screws b and nuts n to form a strut S. And a safety cable (5c) connected to a hole (5h) formed in the reinforcing rib (5r) of the upper end flange (5f) of the support pipe (5). According to claim 1, wherein the fine adjustment unit (D), the hydraulic jack (6j) in the center of the base plate 6 supports the central bottom of the lower flange (5f) of the lower support pipe 5, fine lifting control The guide bolts 6b are installed in such a manner that the guide bolts 6b are disposed to be supported at equal intervals through the lower flange 5f of the lower support pipe 5, and each guide bolt 6b has a constant thickness. Characteristic support washer (6a) is inserted into the guide bolt (6b) retractable and characterized in that it is fixed by supporting the lower end of the support (S) lifted and adjusted by the hydraulic jack (6j) with the support washer (6a) Adjustable temporary prop to say.

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