KR20240013373A - Appartus for eliminating water and powder in wet type waste gas cleaning unit - Google Patents

Abstract

The disclosed content is a two-stage tensioning of a ground anchor strand that not only allows the strand for a ground anchor to be tensioned with a tensile force that exceeds the friction force of the sliding wedge, but also allows a plurality of strands for a ground anchor to be tensioned to uniform or different degrees of tension depending on selection. It's about devices.
The disclosed content includes an anchoring base installed on the ground where a ground anchor is installed; A primary anchor head equipped with a wedge groove and a corresponding sliding wedge is tensioned against an anchoring base installed on the anchoring base and through which a plurality of ground anchor strands penetrate, thereby first tensioning a plurality of ground anchor strands at the same time. Tensile cylinder mechanism; a secondary anchor head that is seated on the primary anchor head of the tensile cylinder mechanism, has through holes through which a plurality of ground anchor strands each pass, and is provided with a partition wall to individually partition the plurality of ground anchor strands; And each of the ground anchor strands is installed on the secondary anchor head, and the tension inner cylinder provided with a jacking wedge is tensioned against the support outer cylinder through which the ground anchor strand passes, thereby individually secondaryly tensioning the ground anchor strand. Shiki presents a two-stage tensioning device for a strand for a ground anchor including a load distribution cap as an example.

Description

Two-stage tensioning device for strand for ground anchor {APPARTUS FOR ELIMINATING WATER AND POWDER IN WET TYPE WASTE GAS CLEANING UNIT}

The disclosed content relates to a tensioning device for a ground anchor strand for tensioning the ground anchor strand when constructing a ground anchor for ground reinforcement.

Unless otherwise indicated herein, the material described in this section is not prior art to the claims of this application, and is not admitted to be prior art by inclusion in this section.

Generally, during civil engineering or building construction, ground anchors are constructed to prevent collapse of ground slopes or retaining walls.

Ground anchors are made by inserting at least one strand into a grouting hole drilled into the ground, injecting grout to cure it, and then tensioning the strand to apply tensile force, thereby stabilizing and reinforcing the ground.

These ground anchors are usually supported by an anchor head so that the ends of the strands extending outward from the ground from the grouting hole are gripped through respective clamping wedges.

As an example of a tensioning device and method for such a ground anchor strand, Republic of Korea Patent Registration No. 10-1511104 (announced on April 13, 2015) includes a strand and a plurality of strands arranged in parallel at regular intervals from each other. It includes a first strand assembler fastened to each of a plurality of strands at one end of each of the strands, wherein a resistance means for improving the pulling resistance is provided on the outer peripheral surface of the first strand assembler, and the resistance means for improving the pulling resistance is: 1 It is a friction protrusion that protrudes by a predetermined height on the outer peripheral surface of the steel strand assembler, and a wedge is fastened to one end of the strand to prevent the strand from loosening, and in the first strand assembler, the strand or the strand A strand insertion hole corresponding to the outer peripheral surface of the strand is provided on a portion of the inner side so as to be fastened while holding the wedge, and a strand insertion hole corresponding to the outer peripheral surface of the strand is provided on the remaining portion of the inner side of the first strand assembler so that it can be fastened while holding the wedge. A PC steel strand assembly using a PC steel strand, in which a wedge fastening hole of a corresponding size is provided, and a ground reinforcement method using the same are disclosed.

In addition, Republic of Korea Utility Model Registration No. 20-0392215 (announced on August 19, 2005) includes a tensile block having a plurality of insertion holes penetrating from one end to the other end, and one end of the tensile block being inserted into the insertion hole to insert the tensile block into the insertion hole. A wedge coupling ring is hung on a locking ledge inside the ball and has an inclined portion formed on the inner circumferential surface whose diameter decreases from one end of the insertion hole of the tensile block to the other end, and is inserted into this wedge coupling ring and is cut in the longitudinal direction and divided into a plurality of wedge pieces. A strand tension head is disclosed, which includes a wedge having a tapered portion formed on the outer peripheral surface in close contact with the inclined portion of the wedge coupling ring.

However, in the case of the tensioning device for the conventional ground anchor strand as described above, only the primary tension of the strand is achieved using an anchor head containing a clamping wedge, so only uniform tension is possible to a degree corresponding to the friction force of the clamping wedge. However, there was a problem in that it was difficult to tension the ground anchor strand to the required degree because it could not be tensioned with a tensile force that exceeded the friction force of the clamping wedge.

1. Republic of Korea Patent Registration No. 10-1511104 (announced on April 13, 2015) 2. Republic of Korea Utility Model Registration No. 20-0392215 (announced on August 19, 2005)

Not only does it enable the tensioning of ground anchor strands with a tensile force that exceeds the friction force of the sliding wedge, but it also provides a two-stage tensioning device for ground anchor strands that allows multiple ground anchor strands to be tensioned to uniform or different tension levels depending on selection. I want to do it.

Additionally, it is not limited to the technical challenges described above, and it is obvious that other technical challenges may be derived from the description below.

The disclosed content includes an anchoring base installed on the ground where a ground anchor is installed; A primary anchor head equipped with a wedge groove and a corresponding sliding wedge is tensioned against an anchoring base installed on the anchoring base and through which a plurality of ground anchor strands penetrate, thereby first tensioning a plurality of ground anchor strands at the same time. Tensile cylinder mechanism; a secondary anchor head that is seated on the primary anchor head of the tensile cylinder mechanism, has through holes through which a plurality of ground anchor strands each pass, and is provided with a partition wall to individually partition the plurality of ground anchor strands; And each of the ground anchor strands is installed on the secondary anchor head and tensioning the inner cylinder with a jacking wedge is tensioned against the support outer cylinder through which the ground anchor strand passes, thereby individually secondaryly tensioning the ground anchor strands. Shiki presents a two-stage tensioning device for a strand for a ground anchor including a load distribution cap as an example.

According to a preferred feature of the disclosed content, the sliding wedge has a half-split inverted truncated cone shape, but no wedge protrusions are formed on the inner peripheral surface.

According to a preferred feature of the disclosed content, a seating leg abutting the upper inner peripheral surface of the tension cylinder mechanism is formed protruding from the lower end of the partition wall of the secondary anchor head.

According to a preferred feature of the disclosed content, a wedge withdrawal space is formed between the partition walls of the secondary anchor head for removing the sliding wedge after secondary tension by the load distribution cap.

According to a preferred feature of the disclosed content, a female thread is formed on the support outer cylinder of the load distribution cap, and a male thread screwed to the female thread is formed on the tension inner cylinder of the load distribution cap.

According to a preferred feature of the disclosed content, a magnetic ring is provided around the lower end of the support cylinder of the load distribution cap to be closely fixed to the secondary anchor head.

According to a preferred feature of the disclosed content, the tension inner tube of the load distribution cap is marked with a ruler indicating the amount of tension with respect to the support outer tube.

According to the two-stage tensioning device for the ground anchor strand according to the disclosed embodiment, a plurality of ground anchor strands are first tensioned to the same degree of tension at the same time using a tension cylinder mechanism and a sliding wedge, and then the secondary anchor head and As each ground anchor strand can be individually secondaryly tensioned through the load distribution cap, not only is it possible to tension the ground anchor strand with a tensile force that exceeds the friction force of the sliding wedge, but also multiple strands for ground anchor can be uniformly distributed depending on selection. Alternatively, there is an advantage that it can be stretched to different degrees of tension.

According to the two-stage tensioning device for the ground anchor strand according to the disclosed embodiment, there is an advantage that uniform tension or reverse eccentric tension is possible for each ground anchor strand depending on the situation through the load distribution cap.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Figure 1 is an overall structure diagram of a two-stage tensioning device for a strand for a ground anchor according to an embodiment of the disclosed content.
Figure 2 is a diagram showing the first tensioning state by the tension cylinder mechanism in the two-stage tensioning device for the strand for a ground anchor according to an embodiment of the disclosed content.
Figure 3 is a structural diagram of a sliding wedge in a two-stage tensioning device for a strand for a ground anchor according to an embodiment of the disclosed content.
Figure 4 is a structural diagram of a secondary anchor head in a two-stage tensioning device for a strand for a ground anchor according to an embodiment of the disclosed content.
Figure 5 is a diagram illustrating the state of secondary tensioning by a load distribution cap in a two-stage tensioning device for a strand for a ground anchor according to an embodiment of the disclosed content.

Hereinafter, the configuration and effects of the preferred embodiment will be examined with reference to the attached drawings. For reference, in the drawings below, each component is omitted or schematically shown for convenience and clarity, and the size of each component does not reflect the actual size. In addition, the same reference numerals refer to the same components throughout the specification, and reference numerals for the same components in individual drawings will be omitted.

As shown in FIG. 1, the two-stage tensioning device of the strand for a ground anchor according to an embodiment of the disclosed content includes an anchoring base 10 installed on the ground where the ground anchor is installed, and a plurality of anchorage bases 10. A tension cylinder mechanism (20) provided with a primary anchor head (21) that simultaneously and uniformly tensions the strands (3) for ground anchors, and on the primary anchor head (21) of the tension cylinder mechanism (20). It includes a secondary anchor head 30 that is seated, and a load distribution cap 40 that is installed on each of the secondary anchor heads 30 and provides secondary tension to the ground anchor strands 3 individually.

Here, the anchoring base 10 corresponds to a support base that supports the primary anchor head 21 for primary tensioning of the ground anchor strand 3, and at the same time serves to transmit the tensile force applied to the ground anchor to the ground. This means that it is installed on the ground where the ground anchor is installed.

Typically, the lower part of the anchoring base (10) is provided with a anchoring plate (11) that faces the ground, and the anchoring base (10) has a wedge groove (13) through which a strand (3) for a ground anchor penetrates and into which a clamping wedge (15) is inserted. ) is formed.

A tension cylinder mechanism 20 is installed on the above-described fixation base. This tension cylinder mechanism (20) is a primary anchor head (21) provided with a wedge groove (23) and a corresponding sliding wedge (25) with respect to the anchoring base (10) through which a plurality of ground anchor strands (3) penetrate. ) serves to provide primary tension to a plurality of ground anchor strands (3) at the same time.

The tensile cylinder mechanism 20 is configured to upper the upper cylinder part 20b, which is equipped with the primary anchor head 21 at the top, with respect to the lower cylinder part 20a, which is equipped with the support plate 27 at the bottom, through the application of hydraulic pressure. It is formed in a structure that simultaneously applies uniform tensile force to a plurality of ground anchor strands (3) as they are pushed up.

As shown in Figures 2 and 3, the fixing base 10 and the tension cylinder mechanism 20 described above are different only in that a sliding wedge 25 is applied to the wedge groove 23 rather than a clamping wedge. Since the structure, installation method, and use method by applying hydraulic pressure are the same as the tensioning device of the conventional ground anchor strand, further redundant description will be omitted to simplify the specification, and the sliding wedge 25 will be described in detail. Let me explain.

A commonly used clamping wedge has a half-split inverted truncated cone shape with a wedge protrusion formed on the inner circumferential surface, while the sliding wedge 25, as shown in FIG. 3, has a half-split inverted truncated cone shape with a wedge protrusion formed on the inner circumferential surface. The difference is that the key protrusion is not provided.

Therefore, when a load (tensile force) greater than the friction force between the sliding wedge (25) and the ground anchor strand (3) is applied by the tension cylinder mechanism (20), the sliding wedge (25) moves against the ground anchor strand (3). As it slides, a uniform normal load (tensile force) can be applied to the plurality of ground anchor strands (3).

After completion of the primary tension by the tension cylinder mechanism 20 described above, the secondary anchor head 30 is seated on the primary anchor head 21 of the tension cylinder mechanism 20. The secondary anchor head 30 serves as a support to support the lower end of the load distribution cap 40 used for secondary tension.

As shown in FIG. 4, this secondary anchor head 30 includes an anchor plate 31 having a through hole 33 through which a plurality of ground anchor strands 3 respectively pass, and an anchor plate 31 of the anchor plate 31. It is formed integrally in the lower part and has a structure including a partition wall (35) that individually partitions a plurality of ground anchor strands (3).

The anchor plate 31 preferably has a disk shape, and the through holes 33 are preferably formed in a number corresponding to the number of strands 3 for ground anchors in a form including a wedge groove that expands toward the top. In addition, the partition walls 35 are preferably formed radially at regular angle intervals from the center point of the anchor plate 31. The number of strands (3) for ground anchors is preferably four, and in this case, the partition wall (35) is radially spaced at an angle of 90 degrees from the center point of the anchor plate (31), that is, intersecting at the center point of the anchor plate (31). It can be formed into a criss-cross shape.

Between the partition walls 35 of the secondary anchor head 30, there is a wedge withdrawal space 37 for removing the sliding wedge 25 that comes out of the wedge groove 23 after the secondary tension by the load distribution cap 40. ) are formed respectively. In addition, at the lower end of the partition wall 35 of the secondary anchor head 30, a seating leg 39 is formed to protrude and is in contact with the upper inner peripheral surface of the tension cylinder mechanism 20.

On the above-described secondary anchor head 30, a load distribution cap 40 is installed for each strand 3 for ground anchor. The load distribution cap 40 serves to individually secondarily tension the ground anchor strands 3, which are firstly tensioned with an equal tension force by the tension cylinder mechanism 20.

As shown in FIG. 5, this load distribution cap 40 is tensilely coupled to the support outer cylinder 41 through which the ground anchor strand 3 penetrates, and the support outer cylinder 41 in the upward direction, and is attached to the ground at the top. It may include a tension inner tube (45) provided with a jacking wedge (47) for holding the anchor strand (3).

The mutual connection between the support outer cylinder 41 and the tension inner cylinder 45 of the load distribution cap 40 is preferably a screw connection. In this case, the support outer cylinder 41 of the load distribution cap 40 has a female thread (41a). This is formed, and a male thread (45a) is formed in the tension inner cylinder (45) of the load distribution cap (40), which is screwed to the female thread (41a). To tension the tension inner tube (45) against the support outer tube (41), a separate rotary tool (not shown) is used to forcibly rotate the tension inner tube (45) with respect to the support outer tube (41) while holding the tension inner tube (45). This is needed. In order to grip the tension inner tube 45 by a rotary tool, it is preferable that the tension inner tube 45 is provided with polygonal protrusions, for example, hexagonal protrusions.

In addition, since it must be fixed on the secondary anchor head (30) when the tension inner cylinder (45) is forced to rotate with respect to the support outer cylinder (41), a support outer cylinder (41) is provided around the lower end of the support outer cylinder (41) of the load distribution cap (40). A magnet ring 43 is provided to ensure that 41) is tightly fixed on the secondary anchor head 30.

In addition, the jacking wedge 47 may be formed by press-fitting a clamping wedge that has a half-split inverted truncated cone shape and has a wedge protrusion formed on the inner peripheral surface within the wedge groove formed on the tension inner cylinder 45.

In addition, a ruler (not shown) indicating the amount of tension of the tension inner tube 45 with respect to the support outer tube 41 is displayed on the tension inner tube 45 of the load distribution cap 40.

Hereinafter, the method of use and operation of the two-stage tensioning device 1 for a strand for a ground anchor according to an embodiment disclosed with reference to FIGS. 1 to 5 will be described as follows:

First, the anchoring base 10 is installed on the ground where the ground anchor including a plurality of ground anchor strands 3 is installed, and then the tension cylinder mechanism 20 and the sliding wedge 25 are installed on the anchorage base 10. Using , a plurality of ground anchor strands (3) are first tensioned to the same degree of tension at the same time.

Next, after installing the secondary anchor head (30) on the tension cylinder mechanism (20), a load distribution cap (40) is installed for each ground anchor strand (3) on the secondary anchor head (30). After installation, the tension inner cylinder is provided with a jacking wedge (47) that holds the strand (3) for ground anchor against the support outer cylinder (41) of the load distribution cap (40) closely fixed on the secondary anchor head (30). As (45) is tensioned, each ground anchor strand (3) is individually tensioned a second time.

Therefore, when using the two-stage tensioning device (1) of the ground anchor strand according to the disclosed embodiment, a plurality of ground anchor strands (3) are simultaneously pulled together using the tension cylinder mechanism (20) and the sliding wedge (25). After first tensioning to the degree of tension, each ground anchor strand (3) can be individually secondarily tensioned through the secondary anchor head (30) and the load distribution cap (40), so that the sliding wedge (25) Not only is it possible to tension the ground anchor strand with a tensile force that exceeds the friction force, but also, depending on selection, multiple strands for the ground anchor can be tensioned with uniform or different degrees of tension.

Therefore, depending on the installation environment or situation of the ground anchor, equal tension or reverse eccentric tension is possible for each ground anchor strand (3).

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the embodiments described in this specification and the configuration shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention. Since this is not the case, it should be understood that there may be various equivalents and modifications that can replace them at the time of filing this application. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the claims described later rather than the detailed description, and the meaning and scope of the claims and their All changes or modified forms derived from the equivalent concept should be construed as falling within the scope of the present invention.

1: Two-stage tensioning device for strand for ground anchor
3: Strand for ground anchor
10: Fixing base
11: Fixing plate
13: Wedge groove
15: Clamping wedge
20: Tensile cylinder mechanism
20a: lower cylinder part
20b: upper cylinder part
21: Primary anchor head
23: Wedge groove
25: sliding wedge
27: Support plate
30: Secondary anchor head
31: anchor plate
33: Tonggong
35: compartment bulkhead
37: Wedge take-out space
39: Seating leg
40: load distribution cap
41: Support outer cylinder
41a: female thread
43: Magnet ring
45: Tensile inner tube
45a: male thread
47: Jacking Wedge

Claims (7)

An anchoring base installed on the ground where a ground anchor is installed;
A primary anchor head equipped with a wedge groove and a corresponding sliding wedge is tensioned against an anchoring base installed on the anchoring base and through which a plurality of ground anchor strands penetrate, thereby first tensioning a plurality of ground anchor strands at the same time. Tensile cylinder mechanism;
a secondary anchor head that is seated on the primary anchor head of the tensile cylinder mechanism, has through holes through which a plurality of ground anchor strands each pass, and is provided with a partition wall to individually partition the plurality of ground anchor strands; and
Each of the ground anchor strands is installed on the secondary anchor head, and the tension inner cylinder provided with a jacking wedge is tensioned against the support outer cylinder through which the ground anchor strand passes, thereby individually secondaryly tensioning the ground anchor strand. Two-stage tensioning device for strands for ground anchors including a load distribution cap. In claim 1,
The sliding wedge is a two-stage tensioning device for a strand for a ground anchor, characterized in that the sliding wedge has the shape of a half-split inverted truncated cone, but no wedge protrusions are formed on the inner peripheral surface. In claim 1,
A two-stage tensioning device for a strand for a ground anchor, characterized in that a seating leg in contact with the upper inner peripheral surface of the tension cylinder mechanism is protruding from the lower end of the partition wall of the secondary anchor head. In claim 1,
A two-stage tensioning device for a strand for a ground anchor, characterized in that a wedge withdrawal space is formed between the partition walls of the secondary anchor head for removing the sliding wedge after secondary tensioning by the load distribution cap. In claim 1,
A two-stage tensioning device for a strand for a ground anchor, characterized in that a female thread is formed on the support outer cylinder of the load distribution cap and a male thread screwed to the female thread is formed on the tension inner cylinder of the load distribution cap. In claim 1,
A two-stage tensioning device for a strand for a ground anchor, characterized in that a magnetic ring is provided around the lower end of the support outer cylinder of the load distribution cap to be closely fixed to the secondary anchor head. In claim 1,
A two-stage tensioning device for a strand for a ground anchor, characterized in that a ruler indicating the amount of tension with respect to the support outer cylinder is displayed on the tension inner cylinder of the load distribution cap.

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