KR200344123Y1 - Strut Preloading Jack and Structure for Supporting Strut using thereof - Google Patents

Abstract

The present invention relates to a jack device for supporting a brace to be installed to prevent the collapse of the earth wall, and a structure for supporting the brace using this jack device.

In the present invention, one end portion is fixed to the strip 20, and the other end is freely inserted into the insertion hole 31 formed in the end plate 32 of the brace 30, the gap between the strip 20 and the brace 30 A plurality of gap holding members 2 having a rod shape to be retained, and the other end of the gap holding member 2 is inserted into the insertion hole 31, the gaps at both sides of the insertion hole 31. A fixing member (4, 4 ') installed at the other end of the holding member (2) to fix the other end of the holding member (2); A hydraulic cylinder holder (50) is provided on the support connecting plate (3) or the end plate (32) to prevent the hydraulic cylinder (9) from falling down; When the hydraulic cylinder 9 is installed in the space between the spacing holding members 2 and the stroke is extended so that the spacing between the belt 20 and the brace 30 becomes a predetermined degree, the fixing members 4 and 4 'are provided. Is fixed to the end plate 32 of the brace 30 so that the other end of the spacing holding member 2 does not move, thereby maintaining the distance between the girdle 20 and the brace 30 to hold the brace Provided is a jack support jack device, characterized in that 30 to support the strip 20.

Description

Strut Preloading Jack and Structure for Supporting Strut using

The present invention relates to a jack device for supporting a reinforcement and a support structure using the same, in particular, a jack device for supporting a reinforcement that is installed to prevent the collapse of the earth wall, and a structure for supporting the reinforcement using the jack device It is about.

In constructing the temporary wall, earth wall, etc., buttresses are installed to support the lateral earth pressure, etc., but the H-beams are mainly used as the buttresses. A jack device is provided between the brace and the strip of the earth wall, or between the brace and the brace in order to closely adhere the brace in the direction of the earth wall.

Conventional jack devices include a hydraulic jack device using a hydraulic cylinder. Figure 6 is a schematic perspective view of a conventional hydraulic jack device 10, the hydraulic cylinder receiving portion 13, the screw coupled to the support connecting plate (10a, 10b), one side of the support connecting plate (10a) on both sides It consists of the shaft 11 and the threaded shaft disaster prevention member 12. One side of the support connecting plate 10a is fixed by fixing means such as bolts at the end of the brace and the other side of the supporting connecting plate 10b is fixed by fixing means such as bolts at the end of the earth wall or other end of the brace. . When the hydraulic cylinder 14 is placed in the hydraulic cylinder accommodating portion 13 and the hydraulic pressure is applied to extend the hydraulic cylinder 14, the screw shaft 11 is extended to widen the gap between the brace and the belt or the brace and the brace. Support the belt or brace. As such, when the screw shaft pusher preventing member 12 is rotated to reach the hydraulic cylinder receiving portion 13 while the screw shaft 11 is extended, the screw shaft 11 is prevented from contracting and the supported interval is maintained. Will be maintained.

However, in the conventional hydraulic jack device as described above, in order to install the hydraulic cylinder 14, the hydraulic cylinder housing portion 13 made integrally with the support connecting plate (10a) of one side is required, such a hydraulic cylinder housing portion 13 The presence of) increases the weight of the entire hydraulic jack device. Therefore, the conventional hydraulic jack device is difficult to handle, there is a problem that the risk of falling of the device during operation, such as large. In addition, since many parts are used, a lot of manufacturing costs are required. In particular, since the size of the hydraulic cylinder and the size of the hydraulic cylinder receiving portion 13 must correspond to each other, there is a disadvantage that the compatibility of the hydraulic cylinder is low.

In addition, when the length of the entire hydraulic jack device including the hydraulic cylinder housing 13 is limited, and in particular, the length that can be adjusted by the hydraulic cylinder is limited, the space between the brace and the belt or the brace is too large. Long hydraulic jack system or long stroke hydraulic cylinder should be selected accordingly. Therefore, there is a disadvantage that the compatibility of the device by that much.

In order to maintain the elongated state, the screw shaft anti-rolling member 12 should be rotated on the screw shaft 11 to move. In the case where foreign matter is caught in the screw shaft 11 or the screw shaft 11 is rusted, There is a problem that the operation of rotating the screw shaft anti-rolling member 12 becomes very difficult and the usability decreases.

The present invention was developed to overcome the disadvantages and problems of the conventional hydraulic jack device in supporting the support as above, the weight of the device is not large in the present design, the gap between the support and the belt (or brace) It is an object of the present invention to improve the compatibility of the hydraulic cylinder and the device by being able to adjust properly, and to provide a support device for the support structure of the support structure, which can be easily installed, and a support structure using the support structure.

1 is a schematic exploded perspective view of the jack device for supporting the support according to the present invention.

Figure 2 is a schematic coupling perspective view of another embodiment of the jack support for the support according to the present invention.

Figure 3a to 3g is a schematic side view showing a step-by-step structure for supporting the brace using the brace support jack device of the present invention.

Figure 4 is a schematic perspective view of a modified embodiment of the jack support for supporting device according to the present invention is installed.

FIG. 5 is a view similar to FIG. 2, which is a schematic perspective view of a hydraulic cylinder equipped with a latching device. FIG.

6 is a schematic perspective view of a conventional hydraulic jack device.

<Explanation of symbols for the main parts of the drawings>

1: Jack device for supporting brace 2: Spacing member

3: support connecting plate 4, 4 ': fixing member

5: boss portion 9: hydraulic cylinder

20: Belt 30: Vertico

In order to achieve the above object, in the present invention is a jack support device for supporting the support belt so that the support for the support belt to maintain the distance between the belt and the support belt, the one end is fixed to the support connecting plate to be combined with the belt support The other end is freely inserted into the insertion hole formed in the end plate connected to the brace and a plurality of spacing members having a rod shape to maintain a gap between the strip and the brace, and the other end of the spacing holding member is inserted It is composed of a fixing member which is installed at the other end of the gap holding member at both sides of the insertion hole in the state inserted into the ball to fix the other end of the gap holding member; A hydraulic cylinder holder is installed on the support connecting plate or the end plate to prevent the hydraulic cylinder from falling; When the hydraulic cylinder is installed in the space between the spacing members and the stroke is extended so that the spacing between the strip and the brace becomes a predetermined degree, the fixing member is placed in close contact with the end plate of the brace and the other end of the spacing member is moved. By fixing it so as not to maintain the gap between the gimbal and brace, there is provided a jack support jack device for the brace to support the girdle.

In one embodiment of the present invention, the one end of the spacing member is provided with a support device for supporting a jack support, characterized in that coupled to the support connecting plate integrally by welding.

In addition, in the present invention, as a specific embodiment of the device, a screw portion is formed on the outer surface of the other end of the spacing member, and the fixing member is screwed with a screw portion formed on the outer surface of the other end of the spacing member. There is provided a jack device for supporting a prop, characterized in that it is a nut.

In addition, in the present invention, as a specific embodiment of the above device, a buckling support jack device is provided, characterized in that the buckling prevention side support member is further provided to surround the outer side of the gap holding member to reinforce the side of the gap holding member. do.

In addition, in the present invention, as a brace support structure for supporting the girder by maintaining the gap between the girdle and the brace, the girdle is provided with a support connecting plate, the support plate or the end plate of the brace to drop the hydraulic cylinder Install a hydraulic cylinder holder to prevent, fixedly installed a plurality of gap holding member having a rod shape to the support connecting plate, the other end of the gap holding member is freely inserted into the insertion hole formed in the end plate of the brace, The other end of the gap holding member is provided with a fixing member for fixing the other end of the gap holding member, the hydraulic cylinder in the space between the gap holding member with the other end of the gap holding member is inserted into the insertion hole. After installation, the stroke is extended so that the fixing member is supported when the distance between the strip and the brace becomes a predetermined level. By holding in close contact with the end plate of the beam so as not to move the other end of the gap holding member, by maintaining the gap between the belt and the brace, the brace support structure, characterized in that the brace supports the belt Is provided.

The following describes the configuration of the subject innovation by looking at specific embodiments of the subject innovation with reference to the accompanying drawings. In the present specification, as an example of the brace, the configuration of the present invention will be described by exemplifying the H-beam, but in the present invention, the brace is not necessarily limited to the H-beam.

1 is a schematic exploded perspective view of the jack support device 1 for the support according to the present invention, Figure 2 is a schematic combination perspective view of another embodiment of the jack support device 1 for the support according to the present invention Is shown. Figure 3a to 3g is a schematic side view showing a step-by-step structure for supporting the brace using the brace support jack device (1) of the present invention. In the embodiment shown in Figs. 1, 2 and 3A to 3G, the member number 20 is the band 20, and the member number 30 is the brace 30 supporting the band 20. That is, in FIGS. 1, 2 and 3A to 3G, the present invention is described by illustrating an embodiment in which the support 30 presses and supports the strip 20 of the earth wall, but the present invention is not limited thereto. Instead of the belt 20, it is also possible to apply to the structure to connect while supporting the brace to place another brace to each other. Therefore, in the entire specification including the utility model registration claim, the "belt 20" is used to include not only the belt of the original meaning supporting the earth wall, but also another support. In addition, as shown in Figure 2, bar can be used for the reinforcement connecting member 40, in the present invention, the reinforcement 30 is meant to include the reinforcement connecting member 40. The reinforcement connecting member 40 will be described later.

Jack device 1 for supporting the reinforcement according to the present invention, a plurality of spacing member (2) consisting of a rod-shaped member, one side is coupled to the side (in the case of the reinforcement in the case of the reinforcement) of the strip 20 At the same time as supporting the strip 20 and the other side of the support connecting plate 3 is coupled to one end of the gap holding member 2, and is installed at the other end of the gap holding member 2 and the strip 20 ) And fixing members (4, 4 ') for fixing the other end of the spacing holding member (2) to the end plate (32) provided in the buttress (30) on the other side to maintain the gap between do.

Specifically, the support connecting plate 3 is made of a plate material of a predetermined thickness, the end of the rod-shaped spacing member (2) in one side is assembled and firmly coupled. As shown in FIG. 1, a protruding boss portion 5 is formed on one surface of the support connecting plate 3 so that the ends of the gap holding member 2 are coupled to each other, and around the boss portion 5. It is preferable to form a reinforcing rib 6 to screw the end of the spacing holding member 2 to the boss portion 5. However, the boss portion 5 is not necessarily provided, and forms a fixing hole (not shown) directly on the support connecting plate 3 and couples the end of the spacing member 2 to the fixing hole. It can also be configured to. In addition, by forming a fixing hole directly in the strip 20 without the support connecting plate 3 and by coupling the end of the gap holding member 2 to the fixing hole, the gap holding member 2 to the strip 20 It can also be configured to install directly on. In addition, in coupling the gap holding member 2 with the support connecting plate 3, the end of the gap holding member 2 is connected to the support connecting plate 3 without the boss 5 as shown in FIG. 2. It can also be integrally attached by direct welding or the like.

In addition, the support connecting plate 3 is coupled to the strip 20 by a fastening means 7 such as a bolt. For this purpose, the support connecting plate 3 is provided with a bolt hole 8. A bolt hole 8 corresponding to the strip 20 is also provided.

In the embodiment of the figure, there are four interval holding members 2, and all of the bosses 5 to which the ends of the gap holding members 2 are assembled are formed on one plate. However, it is also possible to manufacture the support connecting plate 3 in a small size so as to have only one boss portion 5 in one plate. That is, one support connecting plate (3) is assembled to one spacing holding member (2), and each support connecting plate (3) may be configured to be coupled to the strip 20 by coupling to each other.

The gap maintaining member 2 is made of a rod-shaped member, and the other end is fixed to the other brace 30 to maintain the gap between the strip 20 and the brace 30. Specifically, looking at the embodiment shown in Figure 1, the end plate 32 is provided at the end of the other end of the support 30, the end plate 32 is formed with an insertion hole 31, the gap The other end of the holding member 2 is inserted into the insertion hole 31. In this case, a pair of fixing members 4 and 4 'is provided at the end of the gap holding member 2 to fix the other end of the gap holding member 2 inserted into the insertion hole 31. . The pair of fixing members 4, 4 ′ is preferably composed of a nut member screwed to a threaded portion formed at the other end of the spacing holding member 2. The fixing member 4 located inside the fixing members 4 and 4 'opens the hydraulic cylinder 9 after opening the belt 20 and the brace 30 with the hydraulic cylinder 9, as will be described later. When removed, it serves to maintain the gap between the strip 20 and the brace 30 by supporting the compressive force acting to reduce the gap therebetween. On the other hand, the fixing member 4 'located on the outside moves the jack device or pulls the spacer 2 in the direction of the strip 20 as described later. It serves to prevent the separation from the end plate 32, and also performs the function of fixing the end of the gap holding member 2 when the gap holding member 2 is subjected to bending stress. A hydraulic cylinder 9 is disposed in the space between the gap holding members 2.

In the embodiment of Figure 1 has the structure that the other end of the spacing member 2 is inserted into the end plate 32 of the brace 30, in the present invention, the brace 30 is shown in FIG. As in the embodiment, it is a concept including a separate brace support member 40 connected to the brace 30. That is, in fixing one end of the space maintaining member 2, the support for retaining the spacing member (2) is further provided with a reinforcement connecting member 40 of the structure described below, rather than directly fixed to the brace 30 (30) It is fixed to the 40, it is to connect the brace support member 40 to the actual brace 30. However, in the specification, the brace support member 40 was used separately from the brace 30 for convenience.

Specifically, looking at the configuration of the reinforcement connecting member 40, to form a separate reinforcement connecting member 40 through a method such as cutting the H-beams to a predetermined length, the front end of the reinforcing connection member 40 Install the plate 32 and the connecting plate 33 for the connection with the brace 30 to the back of the brace 30 connecting member 40 is installed. In this case, it is preferable to further attach the horizontal reinforcing plate 34 supporting the end plate 32 and the connecting plate 33 to the brace support connecting member 40. In the case of using such a reinforcement connecting member 40, the end of the spacing holding member (2) is inserted into the insertion hole 31 formed in the end plate 32 of the reinforcing connection member 40 and the insertion hole Fixing members 4 and 4 'are provided before and after the end of the space keeping member 2 inserted in the 31. A bolt hole 8 is formed in the connecting plate 33 of the brace support member 40 so that the brace support member 40 is integrally coupled to the end of the brace 30 by a fastening means such as a bolt.

On the other hand, in the present invention, when the hydraulic cylinder (9) is placed horizontally in the space between the gap holding member (2), the hydraulic cylinder holder (50) is provided to prevent the hydraulic cylinder (9) from falling. In the embodiment shown in the drawing the hydraulic cylinder holder 50 is composed of a semi-cylindrical member is configured to support the lower portion of the hydraulic cylinder (9), the hydraulic cylinder holder 50 is not necessarily limited to the above shape. . For example, if it has a function that can prevent the fall of the hydraulic cylinder (9), such as simply protruding jaw, flat base, etc., any shape corresponds to the hydraulic cylinder holder (50). In the embodiment shown in the figure, the hydraulic cylinder holder 50 is installed on the support connecting plate 3, but the installation position is not necessarily limited thereto, and may be installed on the end plate 32 on the opposite side. . The hydraulic cylinder holder 50 as described above performs a function of accurately aligning the axis of the hydraulic cylinder 9 in addition to the function of preventing the falling of the hydraulic cylinder (9). That is, when the stroke of the hydraulic cylinder 9 is extended, the function of making the center thereof coincide with the center of the brace 30 is also performed.

Next, a process of supporting the brace according to the present invention will be described in detail with reference to FIGS. 3A to 3G associated with the embodiment of FIG. 1. 3a and 3b is a schematic side cross-sectional view showing a shape before the prop support jack device according to the present invention and the pre-assembly is completed on one side of the support 30 to vertically support the strip 20, respectively. As shown in the figure, one end of the gap holding member 2 is coupled to the boss portion 5 formed on the support connecting plate 3 to be integrated with the support connecting plate 3, and the other end is the support 30. It is inserted into the insertion hole 31 formed in the end plate 32 of the) is installed in the brace 30. At this time, the pair of fixing members (4, 4 ') provided at the other end of the spacing holding member (2) are respectively located on both sides of the insertion hole 31 of the brace 30, the support connecting plate (3) The fixing member 4 located in the () direction is such that the length of the space keeping member 2 does not decrease in a state where the brace 30 and the strip 20 are sufficiently opened, that is, the gap between the brace 30 and the strip 20. The fixing member 4 'positioned in the direction of the support 30 is prevented from being completely separated from the insertion hole 31 by the fixing member 4'.

After moving the brace 30 to the site of the brace support jack device 1 is installed to approach the band 20 (Fig. 3c), the support connecting plate 3 is coupled to the band 20 (Fig. 3d) . At this time, the holding member 4 'installed on the other side of the space holding member 2 is placed at the end of the space holding member 2 to maintain the space when the support connecting plate 3 is pulled in the direction of the strip 20. The member 2 can be easily extended. In the present invention, if the length of the spacing holding member 2 is sufficiently long, even if the length between the belt 20 and the support 30 is quite long, it can be easily used, and between the belt 20 and the support 30 depending on the construction site. Even if the interval of is changed, it can be used easily.

After coupling the support connecting plate 3 to the strip 20 using the fastening means 8 such as bolts as described above, as shown in FIG. 3E, the hydraulic cylinder 9 is disposed between the spaces between the space keeping members 2. Install). If the distance between the strip 20 and the brace 30 is not large enough that only the stroke of the hydraulic cylinder 9 is sufficient, when the hydraulic cylinder 9 is installed, a block-shaped member (not shown) is mounted on the hydraulic cylinder. (9) and the strip 20, or may be inserted between the hydraulic cylinder 9 and the brace 30 to be used. Since the hydraulic cylinder holder 50 is provided, the hydraulic cylinder 9 is positioned in a state where the fall is prevented, and the stroke axis center of the hydraulic cylinder 9 automatically coincides with the center of the brace 30.

As shown in FIG. 3F, when the hydraulic cylinder 9 is pressurized to extend the stroke, the other end of the space keeping member 2 gradually exits from the insertion hole 31 of the brace 30, and the belt 20 and As the distance between the brace 30 is pushed to the strip 20. When the gap between the strip 20 and the brace 30 is enough to support the strip 20, the other end of the gap holding member 2 is fixed to the brace 30. That is, as shown in FIG. 3g, when the gap between the strip 20 and the brace 30 is sufficient, the fixing member 4 in the direction of the supporting connecting plate 3 is moved in the brace 30 direction. Position it so that it contacts the end plate 32 of (30).

In this state, if the hydraulic pressure of the hydraulic cylinder 9 is reduced to reduce the stroke, the gap between the belt 20 and the brace 30 will be reduced, but the fixing member 4 is spaced at the above position. (2) is fixed (since the fixing member is screwed and fixed to the gap holding member in the illustrated embodiment), the gap between the strip 20 and the brace 30 is maintained as it is without reducing the strip 20 Will be pressed. Finally, the hydraulic cylinder 9 is removed as shown in FIG. 3g, and the fixing member 4 ′ in the direction of the brace 30 is rotated so as to contact the end plate 32 of the brace 30. Through such a configuration, the brace 30 is to support the belt 20.

On the other hand, in the case of removing the support 30 that was supporting the strip 20, the above-described steps may be reversed, but first, after releasing the fixing member 4 'located on the outside to move to the outside, the space keeping member When the hydraulic cylinder 9 is installed in the space between (2) and the hydraulic pressure is applied to extend the stroke, the gap between the strip 20 and the brace 30 is slightly increased. It becomes easy to disassemble the fixing member 4 which has been fixed. In this state, the fixing member 4 is sufficiently moved in the direction of the supporting connecting plate 3 so that the space keeping member 2 can be inserted more freely in the direction of the insertion hole 31. When the hydraulic pressure of the hydraulic cylinder 9 is reduced to reduce the stroke, the distance between the belt 20 and the brace 30 is reduced. Subsequently, the hydraulic cylinder 9 is removed, the support connecting plate 3 is dismantled from the strip 20, the fixing member 4 'is completely separated, and the other end of the spacing member 2 is supported. By pulling out from the insertion hole 31 of the end plate 32, the support jack device 1 of this invention is isolate | separated.

In the present invention, when the gap between the strip 20 and the brace 30 is relatively large and the buckling of the gap holding member 2 is concerned, the gap holding member is surrounded by the outer side of the gap holding member 2 as necessary. A buckling preventing side support member 40 for reinforcing the side of the (2) may be further provided, Figure 4 is a schematic perspective view of the device provided with a buckling preventing side support member 40 of such a gap holding member (2) Is shown. That is, as shown in the drawings, the buckling preventing side support member 40 is a bridge that connects both the penetrating member 41 and the penetrating member 41 through which the respective spacing members 2 pass. The member 42 can be comprised. In FIG. 4, the illustration of the brace 30 and the fixing members 4 and 4 ′ are omitted.

However, the buckling preventing side support member 40 is not necessarily limited to the configuration of the above embodiment, it may be composed of a steel wire surrounding the outside of the gap holding member 2, in addition to the gap holding member ( 2) It can be configured in various forms to prevent each bending. When the buckling preventing side support member 40 is further provided, the buckling phenomenon can be prevented from occurring in the spacing member 2 even if the spacing between the belt 20 and the brace 30 becomes relatively large. On the other hand, when the thickness of the end plate 32 of the brace 30 is not sufficient, in addition to the end plate 32, an additional end reinforcing plate (not shown) may be further attached and used. In particular, in the case of using the reinforcement connecting member 40 as shown in Figure 2, the length of the reinforcement 30 may be short.

FIG. 5 is a view similar to FIG. 4, which is a schematic perspective view of a hydraulic cylinder with a latching device installed, and FIG. 5 shows another configuration for preventing the hydraulic cylinder 9 from falling. . Specifically, when installing the hydraulic cylinder (9) by installing the latch device 60 on the outer surface of the hydraulic cylinder (9) as shown in the drawing, so that the latching device 60 spans the gap holding member (2) It is to prevent the fall of the hydraulic cylinder (9).

As described above, in the conventional hydraulic jack device, a separate hydraulic cylinder housing is required, but in the present invention, such a hydraulic cylinder housing is not necessary, and thus an increase in the weight of the device due to the presence of the hydraulic cylinder housing can be prevented. Will be. In addition, the number of parts constituting the apparatus can be reduced, and the weight of each part can be reduced. Therefore, when the device of the present invention is used, the handling is relatively easy, and thus the workability is improved, and the risk of the device falling during the work can be lowered.

In particular, in the present invention, if the length of the spacing member is sufficiently long, it can be used even when the spacing between the belt and the brace is large, and even when the stroke of the hydraulic cylinder is small, the block member or the like is used to separate the spacing between the brace and the brace. Since it can be matched, the compatibility of a hydraulic cylinder and a device is greatly improved.

Particularly, in the conventional apparatus, when foreign matter is caught in the screw shaft 11 or the screw shaft 11 is rusted, the operation of rotating the screw shaft anti-rolling member 13 becomes very difficult, which causes a problem in usability. In the device according to the present invention, the spacing member 2 is fixed using a relatively small fixing member 4, 4 'made of a nut, etc., and thus the possibility of the above problem is very low.

In particular, since the hydraulic cylinder holder 50 is provided, when installing the hydraulic cylinder 9, not only can the hydraulic cylinder 9 fall down but also the stroke of the hydraulic cylinder 9 can be extended. At this time, the center has the effect of being positioned to automatically match the center of the brace 30.

Claims (5)

As a jack support jack device for maintaining the distance between the strip 20 and the brace 30 so that the brace 30 supports the strip 20, One end is fixed to the support connecting plate (3) to be coupled to the strip 20, the other end is freely inserted into the insertion hole 31 formed in the end plate 32 to be coupled to the brace 30 A plurality of spacing members 2 having a rod shape for maintaining a spacing between the 20 and the brace 30; The other end of the gap holding member (2) is installed in the other end of the gap holding member (2) on both sides of the insertion hole 31 in the state inserted into the insertion hole (31) and the gap holding member (2) It consists of a fixing member (4, 4 ') for fixing the other end of the; A hydraulic cylinder holder (50) is provided on the support connecting plate (3) or the end plate (32) to prevent the hydraulic cylinder (9) from falling down; When the hydraulic cylinder 9 is installed in the space between the spacing holding members 2 and the stroke is extended so that the spacing between the belt 20 and the brace 30 becomes a predetermined degree, the fixing members 4 and 4 'are provided. Is fixed to the end plate 32 of the brace 30 so that the other end of the spacing holding member 2 does not move, thereby maintaining the distance between the girdle 20 and the brace 30 to hold the brace Jack support device for the support, characterized in that for supporting the 30 strip (20). The method of claim 1, A thread portion is formed on the outer surface of the other end of the gap holding member 2, The fixing member (4, 4 ') is a support for jack support device, characterized in that the nut is screwed with the screw formed on the outer surface of the other end of the gap holding member (2). The method according to claim 1 or 2, One end of the spacing member (2) is jack support for jack support, characterized in that integrally coupled to the support connecting plate (3) by welding. The method according to claim 1 or 2, A buckling support jack device, characterized in that the buckling preventing side support member 40 is further provided to surround the outer side of the gap holding member 2 to reinforce the side of the gap holding member 2. As a brace support structure for maintaining the distance between the girdle 20 and the brace 30 so that the brace 30 supports the girdle 20, The support plate 3 is installed on the belt strip 20, and the hydraulic cylinder holder 50 prevents the drop of the hydraulic cylinder 9 from the end plate 31 of the support connection plate 3 or the support 30. Install and fix a plurality of spacing members (2) having a rod shape to the support connecting plate (3), The other end of the gap holding member 2 is freely inserted into the insertion hole 31 formed in the end plate 32 of the brace 30, At the other end of the gap holding member 2 is provided with fixing members (4, 4 ') for fixing the other end of the gap holding member (2), In the state where the other end of the gap holding member 2 is inserted into the insertion hole 31, the hydraulic cylinder 9 is installed in the space between the gap holding members 2, and the stroke is extended to extend the strip 20. ) And the brace 30 when the gap is a predetermined degree is placed close to the fixing member (4, 4 ') to the end plate 32 of the brace 30, the other end of the gap holding member (2) is moved By fixing it so as not to maintain a gap between the gimbal (20) and the brace 30, the brace support structure, characterized in that the brace 30 to support the gimbal (20).