KR101289111B1 - Length adjustable apparatus for steel pipe strut of retaining wall - Google Patents

Abstract

The present invention relates to a length adjusting device used when installing a steel pipe brace for a retaining wall for stably supporting the retaining wall in a civil engineering work, and in particular, by adjusting the length of the steel pipe brace by driving a hydraulic jack to fix the position with a lock nut. It is possible to adjust the length of the steel pipe braces that can be adjusted to the length of the steel pipe braces that can be applied to the steel pipe braces that are installed between the facing wall.
According to a preferred embodiment of the present invention, the length adjusting device of the steel pipe brace for the retaining wall includes a screw shaft having a circular cross section and having a screw portion formed on an outer circumferential surface of a predetermined section from one end in the longitudinal direction, and fixed to the other end of the screw shaft. An end position of a steel pipe brace having a connecting member for connection and a plurality of nut reinforcing ribs arranged in the screw shaft direction at regular intervals on the circumference of the screw shaft, and being moved by screwing into the screw portion and inserted into the screw portion. Including a lock nut for fixing the pressure, by the expansion of the hydraulic jack between the connecting member and the end of the steel pipe brace to generate a propulsion by pushing the steel pipe brace to secure the movement position of the steel pipe brace by rotating the lock nut The locking nut is connected to one end of the steel pipe brace. A flange formed in a circumferential direction so as to contact the surface portion and the nut is characterized in that the reinforcing rib connected to the flange.

Description

Length control device of retaining wall steel pipe reinforcement and length adjustment angle using this length control device {Length adjustable apparatus for steel pipe strut of retaining wall}

The present invention relates to a length adjusting device used when installing a steel pipe brace for a retaining wall to stably support the retaining wall in the ground excavation construction, in particular to adjust the length of the steel pipe brace to drive the hydraulic jack to fix the position with a lock nut The length adjustment device of the steel pipe brace for the mud wall which can be applied to the steel pipe brace which is installed between the facing wall, and the length can be adjusted by using the length control device. It is about steel pipe brace.

In general, the earthquake structure in which the earthquake wall is supported by the brace supports the earthquake wall by installing a earth plate between the thumb piles installed at intervals along the excavation boundary on the ground, and installing the earthquake wall between the opposing earthquake walls. I support it. At this time, the thumb pile side pressure such as earth pressure and water pressure acts, the side pressure is transmitted to the other side by the brace between the bands facing each other.

In this case, a screw jack is used to stretch the brace and to stick it between the facing wall. The screw jack is mounted at the end of the brace to adjust the extension length of the brace.

The conventional screw jack is composed of a screw shaft provided in the center of the operation handle, a pair of receiving plates coupled to the threads formed in opposite directions at both ends of the screw shaft. Therefore, the pair of receiving plates moves in a direction closer or farther from each other according to the rotation direction of the manipulation handle, and at this time, a bearing force is generated by the extended movement of the brace that is connected to the pair of receiving plates that are separated.

Conventional screw jacks used in this way is difficult to rotate the operation handle when generating a large support force. This is because the screw shaft and the pair of receiving plates are subjected to a large load that resists the bearing force. In particular, when foreign matter such as concrete is attached to the screw shaft of the screw jack has a problem that makes it more difficult for the operator to rotate the operation handle.

Therefore, the present invention is to solve the problems of the prior art as described above, to generate a bearing force with the hydraulic jack without using the operation handle and to fix the position with the lock nut so that the holding force is maintained even if the hydraulic jack is removed The purpose of the present invention is to provide a length adjustment device for the retaining wall steel pipe brace for easy use without the manipulation force of the retaining wall, and a retaining wall steel support for the retaining wall using the length adjusting device.

The length adjusting device of the steel pipe brace for the retaining wall according to an embodiment of the present invention,
A screw shaft forming a circular cross section and having a screw portion formed on an outer circumferential surface of a predetermined section from one end portion in a longitudinal direction;
A connection member fixed to the other end of the screw shaft and connected to the belt long;
Comprising a plurality of nut reinforcing ribs arranged in the direction of the screw shaft at regular intervals on the circumference of the screw shaft, the locking nut is moved to the screw portion and fixed to the end position of the steel pipe brace inserted into the screw portion So;
Pushing the steel pipe brace in the expansion operation of the hydraulic jack between the connecting member and the end of the steel pipe brace to generate a brace force and then to rotate the lock nut to fix the movement position of the steel pipe brace,

The lock nut is provided with a flange formed in the circumferential direction to the surface contact with the end of the bracket connected to one end of the steel pipe brace, characterized in that the nut reinforcing rib is connected to the flange.

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The connecting member is formed in a plate shape having a predetermined thickness and the bolt fastening hole is formed at a predetermined interval in the circumferential direction, characterized in that it comprises a plurality of reinforcing ribs arranged circumferentially on the screw shaft.

In addition, the lock nut is characterized in that the tool insertion groove is further formed at regular intervals on the outer circumferential surface in order to rotate the lock nut in close contact with the other steel pipe brace.

In addition, the connection member is characterized in that the angle of the angle adjustment is further installed.

At this time, the angle is a support plate having a constant thickness, the connecting plate is located at right angles to one side surface of the support plate and the convex curved surface is formed in the pivot hole and the front end portion, the curvature is the same curvature as the convex surface is arranged on one side of the connecting plate Has a pair of pivot brackets each having a load transfer plate forming a concave curved surface having a;

A pair of pivot brackets are positioned such that one convex curved surface is in contact with the other concave curved surface and the other convex curved surface is in contact with one concave curved surface;

A pair of pivot brackets are pivotally connected by a pivot shaft inserted into the pivot hole.

On the other hand, according to the preferred form of the retaining wall steel pipe reinforcement for the length and angle is adjusted by using the length adjustment device of the retaining wall steel pipe reinforcement according to the present invention, the connection member of the length adjusting device is bonded to the band, The hydraulic jack is installed between the ends to generate hydraulic pressure, and after adjusting the position of the brace, characterized in that it has a structure in which the overall length of the brace is adjusted by a lock nut in close contact with the end surface of the brace.

In addition, according to another preferred form of the retaining wall steel pipe brace for adjusting the length and angle by using the length adjustment device of the retaining wall steel pipe brace for the present invention,

The connecting member of the length adjusting device is bonded to the belt, and the hydraulic jack is installed between the connecting member and the end of the brace to adjust the brace position of the brace, and then the overall length of the brace by the lock nut attached to the end surface of the brace. And it is characterized by having a structure in which the installation angle is adjusted.

According to the length adjusting device of the steel wall brace for the retaining wall according to the present invention, since the hydraulic jack can be used, the bearing force can be easily generated by the hydraulic pressure. In addition, after the hydraulic generation, it is possible to adjust the length of the steel pipe brace while maintaining the supporting force by simply moving the lock nut coupled to the screw shaft to the fixed position. Thus, the lock nut does not receive any force that resists the bearing force on the screw shaft during operation. Therefore, the operator can rotate and operate the lock nut with little force without difficulty, thereby greatly improving workability.

In addition, when an angle is installed at the end of the screw shaft, the total length of the steel pipe brace can be easily adjusted while easily adjusting the inclination angle with the belt.

The following drawings, which are attached in the present specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a perspective view of a length adjusting device of the steel pipe brace for the retaining wall according to the first embodiment of the present invention.
Figure 2 and Figure 3 is a state diagram using the length adjustment device of the steel pipe brace for earth retaining wall according to the first embodiment of the present invention.
Figure 4 is a perspective view of the length adjusting device of the steel pipe brace for the retaining wall according to the second embodiment of the present invention.
Figure 5 is a state of use of the length adjusting device of the steel wall brace for earth retaining wall according to the second embodiment of the present invention.
Figure 6a, 6b is an operating state of the angle applied to the second embodiment of the present invention.
7 is a plan view of an angle applied to a second embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

The length adjusting device of the steel wall brace for earth retaining wall according to the present invention may be configured in two forms according to the bonding state in which the steel pipe brace is installed. The first type is when the steel pipe brace is bonded perpendicular to the band, and the second type is when the steel pipe brace is bonded with a constant slope.

≪ Embodiment 1 >

The first embodiment is shown in Figures 1 to 3 as the 'length adjustment device of the steel pipe brace for the mud wall used when the steel pipe brace vertically bonded to the strip.

 As shown in Figure 1, the length adjusting device of the steel wall brace for the retaining wall is provided with a screw shaft (10) having a connecting portion (20) formed at one end of the outer peripheral surface of the predetermined section at one end. At this time, the direction of the screw portion 12 may be configured as a left screw or a right screw. The screw shaft 10 may be made of steel. The screw shaft 10 may have a circular cross section in the longitudinal direction and may be configured in a solid shape, but may be manufactured in the form of a pipe having a hollow to reduce weight.

At this time, the length of the screw shaft 10 may be determined in consideration of the length of the hydraulic jack 5 to be described later. That is, the hydraulic jack 5 is to be installed between the connecting member 20 and the end of the steel pipe brace 2 as shown in Figure 2 so that the stretching force can be exerted.

At this time, one end of the screw shaft 10 is provided with a connecting member 20 to connect to the band (1). The connecting member 20 may be integrally formed on the screw shaft 10 or may be installed by welding. The connecting member 20 may be joined through a plurality of reinforcing ribs 21 arranged at regular intervals circumferentially on the screw shaft 10 in a plate shape as in the present embodiment.

1 to 3, the lock nut 30 is screwed to the threaded portion 12. The lock nut 30 is rotated in the threaded portion 12 in the rotational direction and moved in the longitudinal direction of the screw shaft 10 in the direction of the arrow. At this time, the lock nut 30 serves to fix the end position of the other steel pipe brace 2 inserted into the screw portion (12). In addition, the lock nut 30 has a plurality of nut reinforcing ribs 31 arranged in the direction of the screw shaft 10 at regular intervals on the circumference of the screw shaft 10, and a bracket connected to one end of the steel pipe brace 2. A flange 33 is formed in the circumferential direction so as to be in surface contact with the end of B), and the steel pipe brace 2 to which the lock nut 30 is fixed has a bracket B connected at one end thereof.

In the present embodiment, the lock nut 30 has a circular shape, but may be configured in a polygonal shape. In this case, in order to facilitate the rotation operation, the locking nut 30 may be formed with a tool insertion groove 32 at regular intervals on an outer circumferential surface thereof. Tool insertion groove 32 is for inserting the end of the straight tool (not shown) in order to generate a large rotational force when operating the lock nut (30). Here, the straight tool may be understood as a rod or rod having an end inserted into the tool insertion groove 32 to generate a rotational force to the lock nut 30.

The operation of the first embodiment configured as described above will be described.

First, as shown in FIG. 2, the lock nut 30 is moved closer to the connecting member 20 to insert the screw shaft 10 at the end of the steel pipe brace 2. At this time, the screw portion 12 is inserted into the inner diameter portion of the steel pipe brace (2) by a certain amount. At this time, the connecting member 20 is fastened by bolts to the belt (1) is joined.

In this state, the hydraulic jack 5 is installed between the strip 1 and the end of the steel pipe brace 2 as shown in FIG. At this time, the hydraulic jack 5 may be installed in plural around the screw shaft 10 so that a uniform force is generated. At this time, a support for supporting the rod end of the hydraulic material 5 is joined to the end of the steel pipe brace (2).

In this state, when hydraulic pressure is supplied to the hydraulic jack 5 to generate hydraulic pressure, an extension force is generated between the strip 1 and the other steel pipe brace 2 to generate a force to press the steel pipe brace 2 to push it. . As a result, a gap between the connecting member 20 and the steel pipe brace 2 is opened to support the retaining wall.

Thereafter, the lock nut 30 is rotated to move toward the end side of the steel pipe brace 2 as shown in FIG. 3 to closely adhere to the steel pipe brace 2. At this time, since the lock nut 30 does not receive any force from the outside, the rotation operation is very easy. That is, while the lock nut 30 moves closer to the steel pipe brace 2, it moves without receiving a load that resists the bearing force. After the lock nut 30 is in contact with the steel pipe brace 2, insert a straight tool into the tool insertion groove 32 and force it to rotate slightly, between the lock nut 30 and the end of the steel pipe brace 2. Adhesion occurs and the lock nut 30 is firmly fixed.

Then, when the pressure applied to the hydraulic jack (5) to reduce the contraction operation, the overall length of the hydraulic jack (5) is reduced, thereby easily separating the hydraulic jack (5) between the connecting member 20 and the steel pipe brace (2) I can make it. Therefore, it is possible to facilitate the dismantling of the steel pipe brace to which a large load is applied, and to prevent the loosening and collapse of the retaining wall due to the sudden dismantling of the steel pipe brace.

As described above, according to the present invention, instead of operating the lock nut 30 in the state of receiving the support force from the steel pipe support, the hydraulic nut 5 can be used to generate the support force and then operate the lock nut 30. There is no need for a large operating force. Therefore, it is easy to adjust the length to improve the workability of the retaining wall.

≪ Embodiment 2 >

On the other hand, the length adjustment device of the steel wall brace for earth retaining wall of the present invention may be further provided with an angle 100 to the angle adjustment to the connecting member 20 as shown in Figures 5 to 7 for use when inclined to the belt. .

The angle 100 is provided with support plates 122 and 122 having a constant thickness, and connecting plates 124 and 124 provided at one side of the support plates 122 and 122 and having pivot holes 124a and 124a and convex curved surfaces 125 and 125 formed at the front end thereof. And a pair of pivot brackets 120 and 120 disposed on one side of the connecting plates 124 and 124, respectively, and having load transfer plates 136 and 136 which form concave curved surfaces 135 and 135 having the same curvature as the convex surfaces 125 and 125 at the distal ends. ; It is composed of a pivot shaft 140 inserted into the pivot holes (124a, 124a) to pivotally connect a pair of pivot brackets (120, 120).

At this time, a pair of pivot brackets 120 and 120 are connected to face each other, the connecting plate 124 of one pivot bracket 200 is facing the load transfer plate 136 of the other pivot bracket 120, one side pivot bracket ( The load transfer plate 136 of the 200 is disposed to face the connecting plate 124 of the other pivot bracket 20. Accordingly, the pair of pivot brackets 120 and 120 are positioned such that the convex curved surface 125 of one side is in contact with the concave curved surface 135 of the other side, and the convex curved surface 125 of the other side is in contact with the concave curved surface 135 of the side. At this time, the pivot shaft 140 may be configured in the form of bolts.

Here, the load transfer plate 136 prevents side pressure transmitted through the belt 1 from being transmitted to the pivot shaft 140 to prevent breakage and cutting of the pivot shaft 140.

When the angle 100 configured as described above is applied, the angle θ of the pair of pivot brackets 120 and 120 is adjusted by the pivot shaft 140 as shown in FIG. 5B. Therefore, the length adjusting device of the steel pipe brace for the retaining wall in the place that is installed inclined with respect to the strip 1 as shown in Figure 5b is installed by the steel pipe brace 2 by the angle (100). In this state, the hydraulic jack 5 and the lock nut 30 can be used in the same manner as in the first embodiment to exert the bearing force. Therefore, the second embodiment can obtain the same operation as the first embodiment.

Here, the angle 100 is configured in consideration of the cutting and breaking of the pivot shaft 140, but the angle applied to the present invention may be applied to a technique known in the art of construction wall construction.

As described above, the length adjusting device of the steel wall brace for earth retaining wall according to the present invention has a structure in which a hydraulic jack can be used, so that a bearing force can be easily generated by hydraulic pressure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is only limited by the scope of the appended claims.

10: screw shaft
20: connecting member
21: Reinforcement Rib
22: cylindrical boss
24: disk
26: rib
30: lock nut
31: Nut reinforced rib
32: Tool insert groove
33: flange
100: angle
122,122: support plate
124,124: connecting plate
120,120: pivot bracket
140: pivot axis
2: steel pipe brace
B: bracket

Claims (7)

A screw shaft 10 having a circular cross section and having a threaded portion 12 formed on an outer circumferential surface of a predetermined section from one end in the longitudinal direction;
A connection member 20 fixed to the other end of the screw shaft 10 to be connected to the strip 1;
A plurality of nut reinforcing ribs 31 are arranged in the circumferential direction of the screw shaft 10 in the direction of the screw shaft 10 at regular intervals, and are moved to the screw portion 12 by screwing to position the screw portion 12. A lock nut 30 for fixing an end position of the steel pipe brace 2 inserted into the;
Push the steel pipe brace 2 by extension of the hydraulic jack 5 between the connecting member 20 and the end of the steel pipe brace 2 to generate a brace force, and then rotate the lock nut 30 to rotate the steel pipe brace. To fix the movement position of (2),
The lock nut 30 has a flange 33 formed in the circumferential direction to face the end of the bracket (B) connected to one end of the steel pipe brace 2, the nut reinforcing rib 31 is the flange ( 33) length adjustment device of the retaining wall steel pipe props, characterized in that connected to.
The method according to claim 1,
The connecting member 20 is formed in a plate shape having a predetermined thickness and the bolt fastening hole 20a is formed at a predetermined interval in the circumferential direction, a plurality of reinforcement arranged at a predetermined interval in the circumferential shape on the screw shaft 10 Length adjustment device of the steel pipe brace for the retaining wall, characterized in that it comprises a rib (21).
The method according to claim 1,
The lock nut 30 has a tool insertion groove 32 on the outer circumferential surface of the outer circumferential surface in order to rotate the lock nut 30 to be in close contact with the other steel pipe brace 2, characterized in that the steel pipe brace for the earth wall Length adjuster.
The method according to claim 1,
The connecting member 20, the angle adjusting device for adjusting the length of the steel wall brace for the soil wall, characterized in that the angle 100 is further installed.
5. The method of claim 4,
The angle 100 is
Support plates 122 and 122 having a constant thickness, connecting plates 124 and 124 positioned at one side of the support plates 122 and 122 at right angles, and having convex curved surfaces 125 and 125 formed in pivot holes 124a and 124a and the tip, A pair of pivot brackets 120 and 120 disposed on one side of the connecting plates 124 and 124, respectively, and having load transfer plates 136 and 136 respectively formed at the leading ends thereof to form concave curved surfaces 135 and 135 having the same curvature as the convex surfaces 125 and 125;
The pair of pivot brackets 120 and 120 are positioned such that one convex curved surface 125 is in contact with the other concave curved surface 135 and the other convex curved surface 125 is in contact with the concave curved surface 135 at one side;
A pair of pivot brackets 120 and 120 are pivotally connected by a pivot shaft 140 inserted into the pivot holes 124a and 124a.
The connecting member 20 of the length adjusting device selected from claims 1 to 3 is bonded to the strip 1, and the hydraulic pressure is generated by the hydraulic jack 5 installed between the connecting member 20 and the end of the brace 2. After adjusting the brace position of the brace 2, the overall length of the brace 2 is controlled by the lock nut 30 in close contact with the end surface of the brace 2, characterized in that the steel pipe brace for the earth wall Steel pipe braces for retaining walls with adjustable length and angle.
The connecting member 20 of the length adjusting device selected from claims 4 and 5 is joined to the belt 1, and hydraulic pressure is generated by the hydraulic jack 5 installed between the connecting member 20 and the end of the brace 2. After adjusting the brace position of the brace (2) by the lock nut 30 in close contact with the end surface of the brace 2 for the earth wall, characterized in that the structure having a structure that the overall length and installation angle of the brace 2 is adjusted Steel pipe brace for earthquake wall with adjustable length and installation angle using steel pipe brace.

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