KR960005717Y1 - Lock-bolt fixing machine - Google Patents

Abstract

None.

Description

Hydraulic Lock Bolt Fuser

1 is a perspective view of an embodiment of the present invention

2 is an exemplary state of use of the present invention

3 is a cross-sectional view of the hydraulic lock bolt fixing unit of the present invention

4 is a cross-sectional view of the initial operation during use of the present invention

Section A-A cut section during the fifth or fourth

Section B-B cut section during FIG. 6 or 4

7 is a cross-sectional view after operation during use of the present invention

C-C cut line cross section during FIG. 8 or 7

FIG. 9 is a cross-sectional view of the cut line D-D during the seventh

* Explanation of symbols for main parts of the drawings

a: Rock 1: Deformed steel lock bolt

2: fixture 4: cylinder wedge

5: fixture flange 10: head ring

11 head ring flange 12 through hole

14: spring 15: clip release hole through hole

16: snap ring 17: inclined end

19: fastening bolt 20: front cylinder

21: inner ring of front cylinder 22: end flange

23: disc flange 25: press-fit piston

26: outer ring of the press-fit piston 27,37,57: packing

28,34: Gasket 29,71: Hydraulic Pipeline

30: rear cylinder 31: inner cylinder of the rear cylinder

32,33: Front compartment wall 35: Working piston

36: Outer ring of working piston 3 8: Inner ring of working piston

39: handle 50: bolt clip

52: Inward Slope Division 55: Clip Housing

56: housing outer ring 60: spring

61: spring guide 62: spring support

70,72: Hydraulic Socket

The present invention is in the construction of rock bolt embedding construction to reinforce the landfill body or to attach the structure to the outer surface side by pivoting in the tunnel, road, tunnel, rock cutout surface, retaining wall, etc. In order to securely and securely mount the lock bolt fixtures (hereinafter referred to as the 'Declarations') using the wedges of Korean Utility Model Publication No. 91-1123 provided to firmly lock the lock bolt to the landfill body. It relates to a hydraulic lock bolt fixing unit.

As is well known, lock bolts are pivoted to the reclamation body to construct the tunnels, roads, tunnels, retaining walls, rock cutouts, etc., or to reinforce the structure during construction or to attach the structure to the outer surface. In order to bury the structure, the structure of the lock bolt and its buried construction have various devises to obtain high quality lock bolts without affecting the construction characteristics as well as the time, cost and construction cost. have.

Recently, the above-mentioned provision is a lock bolt configuration, in which a bolt is a general-purpose deformed reinforcing bar, and a fastener formed by a truncated conical hole instead of a fastening nut and a split cylindrical wedge having an inclined outer surface in the conical hole of the fastener. It is designed to be inserted into the embedded body (structure) by inserting a fixture into the distal end of the rebar, which is first embedded with an injection filler such as face mortar and resin adhesive in a pivot type, and then press-fitting the cylindrical wedge to press the inner surface of the pressed cylindrical wedge. By tightening the outer surface of this deformed reinforcement strongly and fixing it integrally with the fixture, it can be used as a fixing means to stabilize the buried structure or to easily attach the attachment to the outer surface, and it is not cracked and unstable rock. The retaining wall was intended to obtain the effect of facilitating the construction of the reinforcement coating material for reinforcement.

According to the method of embedding the lock bolt into the embedding body according to the above-mentioned sentence having the above configuration and working effect, the deformed rebar used as the lock bolt is easily supplied at a low price and fixed directly without a screw part, thereby providing a construction cost and construction cost. In addition to the significant savings in time, it was designed to obtain excellent construction characteristics by easily coping with irregular site construction conditions.

However, the main effect of the above-mentioned sentence is that the cylindrical wedge is strongly pressed into the inside of the fixture so that the deformed reinforcing bar is strongly pressurized and fixed to the outer surface of the landfill body, but the indentation method of the cylindrical wedge is expressed in the drawing and specification of the sentence. As described above, the means of inserting an adapter with a hammer to press it or pressing and fixing it using a rock drill or a hydraulic jack not only leads to a desired effect, but also causes another problem to reduce the effect. There was a disadvantage.

The method of pressing the cylindrical wedge with the hammer and pressing it into the internal hole of the truncated conical fixture requires a lot of manpower, time, precision, and the use of an adapter in the case where the deformed rebar is long, which limits its use. The method of using a compressor or hydraulic jack is by electric, so the pressure is strong and manpower and time can be saved, but the pressure is difficult to control, so the precision is low. It could lead to another cracking phenomenon and could not expect a firm fixing effect.

In particular, all the above-mentioned pressing methods commonly use a split wedge to press the gap between the fixture and the outer side of the deformed rebar, and thus, when the cylindrical wedge is pressed to a certain depth, the deformed reinforcement also receives a pressing force, and is injected into the hole of the landfill body. As the state of fixed adhesion is relaxed or the state of adhesion collapses, it is pushed into the landfill body, causing a fatal defect that negates the construction effect of the lock bolt.

The present invention is designed to improve the fixing method of the lock bolt using the conventional cylindrical wedge, it is easy to use, versatile, high pressing force, precise control is possible, in particular the pressure fixing operation of the cylindrical wedge is flexible without vibration The purpose of this invention is to provide a hydraulic lock bolt anchorage that can be operated to prevent rocking and sliding of the deformed reinforcing rock bolts and to induce high quality rock bolt laying work.

Hereinafter, the present invention will be described in detail with reference to an embodiment.

The hydraulic lock bolt fixing apparatus disclosed by the present invention is configured by combining two hydraulic cylinders back and forth with a single cylindrical body, and guides the lock bolt fixture 2 and the cylindrical wedge 4 to the front end of the front cylinder. The head ring is installed and the rear end is provided with a flange on the outer circumference and a clip release hole on the inner circumference, and the pressurized piston for pressing the cylindrical wedge 4 into the fixture 2 for fixing the lock bolt 1 in the inner compartment. The rear cylinder is provided with a wedge-shaped clip for holding the lock bolt (1), an operation piston and a clip housing for operating the clip, and the two hydraulic cylinders are connected to the hydraulic circuit to control sequentially. While operating the operation piston and the clip housing to hold the lock bolt (1) by the clip, the front hydraulic cylinder is interlocked with the rear cylinder in order to sequentially Press the cylindrical wedge (4) into the space between the outer surface of the lock bolt (1) and the fixture (2), and then actuate the rear cylinder again to clip the clip holding the rear end of the lock bolt (1). It is characterized in that the lock bolt 1 is fixed to the rock (a) or the like by an action of releasing the sphere and detaching the body from the lock bolt 1.

The configuration of an example hydraulic lock bolt fixing unit that satisfies the features of the present invention is shown in FIGS. 1 and 3.

The hydraulic lock bolt fixing unit is composed of a single body that longitudinally couples the front cylinder 20 and the rear cylinder 30 having a cylindrical shape.

The front cylinder 20 has a head ring 10 for guiding the lock bolt fixture 2 and the cylindrical wedge 4, a ring clip release tool 15 for releasing the clip of the rear cylinder 30, and the head. A press-fit piston 25 for press-fitting the cylindrical wedge 4 guided into the ring 10, a spring 14 for pushing the press-fit piston 25 inwardly from the head ring 10, and the press-fit piston ( Elements such as several packings 27 and gaskets 28 which operate 25 in a sealed manner with the inner wall of the cylinder are provided.

The tip of the front cylinder 20 has a larger diameter than the inner wall of the cylinder, and a tip flange 22 having a female thread is formed on the inner wall. The tip flange 22 has a ring shape, and the center portion of the lock bolt 1 and the fixture 2 are formed. (2) and the through-hole 12 for guiding the cylindrical wedge (4), etc. are formed in the inner shape, the head ring 10 is formed with a male thread coupled to the female thread of the front end flange 22 at the outer rear end. .

At the rear end of the front cylinder 20 is formed a disc flange 23 coupled to the leading end of the rear cylinder 30 and the fastening bolt 19 at the outer circumference, and the rear end is formed as the inclined end 17 on the rear inner peripheral wall. And the protruding toward the rear cylinder 30 and the center portion is a ring-shaped clip release hole 15 is formed through the through-hole through which the lock bolt (1) is fixed is fixed to the snap ring (16).

The inner chamber of the front cylinder 20 is formed with a predetermined width of the inner circumferential wall and inner ring 21 having a small diameter in succession following the tip flange 22, and the press-fit piston 25 is formed on the inner circumferential wall and the inner ring 21. This is inscribed.

The press-fit piston 25 is formed with a cone-shaped through hole in which the center part is all-optical narrow, and has an outer ring 26 which is slid into the inner circumferential wall of the cylinder compartment and the packing 27 in the middle of the outer surface. The outer peripheral surface of the rear end is formed in a tubular shape, and several gaskets 28 are intimately inscribed in a sealed state with the inner ring 21 of the cylinder, and the front end of the outer ring 26 is formed by the head ring 10 and the spring 14. It is installed elastically.

In the cylinder chamber formed between the rear end of the outer ring 26 of the press-fit piston 25 and the inner ring 21 of the cylinder in the above-described configuration, a hydraulic pipe line that extends from the outer end of the disc flange 23 to the front end of the inner ring 21. (29) penetrates into the cylinder body.

The three-sided split type that holds the lock bolt (deformed reinforcing bar) 1 in the rear cylinder 30 having the front end coupled to the rear end disc flange 23 of the front cylinder 20 and several fastening bolts 19. Bolt clip 50, a clip housing 55 for integrating and operating the bolt clip 50, an actuating piston 35 assembled with the clip housing 55 and sliding on the inner circumferential wall of the cylinder; , The spring 60 to elastically install the bolt clip 50 is provided with elements such as a spring guide 61, the spring support 62.

The inner circumferential wall of the rear cylinder 30 has an inner ring 31 formed in the middle portion, a front chamber wall 32 formed in the front portion of the inner ring 31, and a diameter larger than the inner diameter of the square chamber wall 32. The rear compartment wall 33 is formed behind the inner ring 31.

The inner ring 31 is inscribed with the outer circumferential surface of the cylindrical tubular actuating piston 35 on which several gaskets 34 are installed, and the outer compartment 36 formed at the rear end of the actuating piston 35 on the rear compartment wall 33. Is slidingly inscribed freely with several packings 37.

A female thread is formed at the distal end of the inner circumferential surface of the working piston 35, and a male thread portion is screwed into the rear end of the clip housing 55. A piston inner ring 38 having a female thread is formed at the middle of the inner circumferential surface to screw the spring support 62. have.

The clip housing 55 screwed to the tip of the actuating piston 35 has several packings 57 installed at the tip and a housing outer ring 56 having a diameter larger than the outer circumferential surface of the tip of the actuating piston 35 is formed to provide a rear cylinder. The wedge-shaped bolt clip 50, which is slidably inscribed in the front compartment wall 32 of the 30 and is formed of a cone-shaped through-hole, which is completely narrowed in front, is divided into three springs. It is elastically inscribed with the spring 60 and the spring guide 61 between the support 62.

The cross-sectional shape of the bolt clip (50) twill outer circumference is small in the front, and the rear is formed in the wedge shape of a certain length divided into three circumferences of the semi-conical shape of large diameter, and the inner diameter when the three sides are collapsed is the lock bolt. (Deformed reinforcing bar) 1 is formed in a ring shape smaller than the diameter, and the inwardly inclined end 52 is formed so as to perturb the tip end inclined end 17 of the clip release tool 15 described above.

When the rear cylinder 30 having such a configuration is provided with hydraulic sockets 70 and 72 which are penetrated into the respective compartments from the outside of the rear cylinder 30 to the front and rear ends of the inner ring 31 formed in the middle portion of the inner circumferential wall. The front compartment is formed between the inner ring 31 and the outer ring 56 of the clip housing 55, and the rear part is the rear compartment between the rear end outer ring 36 of the working piston 35. Is formed.

The front hydraulic socket 70 is provided with a hydraulic pipe 71 connected to the hydraulic pipe 29 of the front cylinder 20 through the outer wall of the rear cylinder 30.

Reference numeral 39 is a handle attached to the upper surface of the rear cylinder (30).

The use state and the effect of the present invention is as follows.

The hydraulic lock bolt mounting device of the present invention is used by connecting a hydraulic circuit (not shown) of the air to the hydraulic socket (70) 72 formed on one side of the rear cylinder (30) and the hydraulic pipe (73).

In order to operate the hydraulic lock bolt fixing unit, the hydraulic pressure of the hydraulic lines 71 and 29 communicated with the front hydraulic socket 70 is released, as in the third diagram, so that the press-fit piston 25 of the front cylinder 20 has a head ring 10. The rear end portion of the outer ring 26 of the press-fitting piston 25 is kept in an operating ready state that is grounded to the distal end portion of the cylinder inner ring 21 by the elastic force of the spring 14 installed in As a result, the working piston 35 of the rear cylinder 30 is grounded at the front end of the outer ring 36 to the rear end of the inner ring 31 of the cylinder, so that the clip housing 55 and the bolt clip 50 are the front cylinder 20. It is used to maintain the grounded state to the rear end inclined end 17 of the clip release port 15 provided at the rear end of the.

Hydraulic lock bolt fixing machine prepared as described above, as shown in Fig. 2, is a well-declared constitution, which is pivotally mounted to a landfill such as a rock bed (a), as a filler for injection mortar, resin adhesive, etc. A bolt (1) is embedded, and a lock bolt (1) protruding from the outer surface side of the embedded body is fitted with a fastener flange (5) or a washer or the like, and a lock having a truncated conical hole formed on the inner surface thereof. At the rear end of the protruding lock bolt (deformed reinforcing bar) 1, where the bolt holder 2 is inserted and the split cylindrical wedge 4 inclined outside is inclined to the distal end of the truncated conical hole of the fastener 2. Insert the hydraulic lock bolt fixing unit through the center part.

When the hydraulic lock bolt fixing unit is fitted, the fixture 2 and the cylindrical wedge 4 are inscribed in the central through hole 12 of the head ring 10, which is the front end of the front cylinder 20, as shown in the fourth diagram. The rear end is grounded to the tip end of the press-fit piston 25 before operation, and the bolt clip 50 is pushed backwards on the inclined inner circumferential wall of the clip housing 55 by the lock bolt (deformed rebar) 1 fitted therein. As shown in Fig. 6, the outer space of the lock bolt (deformed steel bar) 1 is weakly pressed and circumscribed on the outer surface of the lock bolt (deformed reinforcing bar) 1 in a state of being spaced apart.

In this state, when the hydraulic circuit is operated in one step to supply hydraulic pressure to the rear compartment through the rear hydraulic socket 72, the front end portion of the outer ring 36 of the operation piston 35 receives hydraulic pressure and moves backward.

When the operation piston (35) is retracted, the clip housing (55), which is integrally coupled, is also retracted while gradually pressing and retracting the outer circumferential surface of the bolt clip (50) opened by the inclined inner circumferential wall. The outer surface of the penetrated lock bolt (deformed bar) 1 is strongly pressed.

In this way, while the bolt clips 50 are strongly pressing the rear end of the lock bolt (deformed reinforcing bar) 1, the hydraulic circuit is operated in two stages to supply hydraulic pressure to the front compartment through the front hydraulic socket 70, The applied hydraulic pressure acts on the press-fit piston 25 of the front cylinder 20 and the front and rear compartments of the rear cylinder 30 through the hydraulic lines 71 and 29.

At this time, even if hydraulic pressure is applied to the front compartment of the rear cylinder 30, the outer ring 56 of the clip housing 55 that receives the hydraulic pressure is smaller than the diameter of the outer ring 36 of the operation piston 35 of the rear compartment, and thus acts proportionally. Less than the overwhelming rear compartment, the operation piston 35 continuously maintains the operation state pushed to the rear side, and acts on the outer ring 26 of the press-fit piston 25 of the front cylinder 20 through the hydraulic lines 71 and 29. The hydraulic pressure presses the spring force of the spring 14 and actuates the press-fit piston 25 forward as in the seventh degree.

When the press-fit piston 25 is operated forward, the cylindrical wedges 4 grounded at the tip end are gradually pressed into the recesses of the fastener 2 to strongly press the outer surface of the lock bolt (deformed steel bar) 1 as in the eighth degree. Pressing operation is performed while fixing.

The fastener (2) is a pressure fixing operation of the cylindrical wedge (4) is made to complete the operation of fixing the lock bolt (1) with the fastener (2) on the outer surface of the rock (a), etc. to operate the hydraulic circuit in three steps The lock bolt fixing unit from the lock bolt (1).

The separation operation is performed by first removing the hydraulic pressure on the rear hydraulic socket 72 and then applying the clip housing 55 and the operation piston 35 by the hydraulic pressure applied to the front chamber side of the rear cylinder 30 through the front hydraulic socket 70. ) Will move forward.

When the clip housing 55 moves forward, the pressing force of the bolt clip 50 pressing the outer surface of the lock bolt (deformed steel bar) 1 is released, and the bolt clip 50 is driven only by the spring force of the spring 60. The outer surface of the lock bolt (deformed reinforcing bar) 1 is weakly circumferentially moved forward with the clip housing 55.

When the clip housing 55 moves to the rear end of the front cylinder 20, the rear end of the clip release port 15 installed at the rear end of the front cylinder 20 is inclined at the front end of the bolt clip 50 moved together in an inscribed state. It is grounded to the end 17 and pushes the rear spring 60 by force of the bolt clip 50 to back through the inner circumferential wall of the clip housing 55 so as to be wider than the outer diameter of the lock bolt 1 so that the lock bolt ( 1) Completely relieves the pressure and is located.

When the bolt clip 50 is opened and the pressing force of the lock bolt 1 is completely eliminated, the lock bolt fixing unit is pulled out backward from the lock bolt 1 and the hydraulic pressure applied to the front hydraulic socket 70 is removed. When the hydraulic pressure is removed, the press-fit piston 25 is retracted by the spring force of the spring 14 and is positioned in an initial state.

By this operation, the fixing operation of the lock bolt (deformed rebar) 1 by the hydraulic lock bolt fixing unit of the present invention is completed.

The present invention operated in this way is pivotally embedded in all tunnels, roads, tunnels, rock cutout surfaces, retaining walls, etc., to reinforce the landfill or to attach the structure to the outer surface. In the buried fusing of the reinforcing steel lock bolt 1 by the structure of the fastener of the lock bolt using the provided wedge, the cylindrical wedge 4 is attached to the fastener 2 which is the main process of the buried fusing of the lock bolt 1. The press-fitting fixing operation is carried out by the operation of the press-fitting piston 25 and the operating piston 35 which are sequentially operated in conjunction with the hydraulic circuit in the rear cylinders 20 and 30 before constructing the hydraulic lock bolt fixing machine. The same effect can be expected.

First, the back end of the lock bolt 1 is operated by the operating piston 35 and the clip housing 55 to press and tighten the bolt clip 50 with a strong pressing force. The operation of the piston 25 allows the cylindrical wedge 4 to be pressed into the fixture 2 precisely, firmly and reliably without vibration, thereby securing the lock bolt 1 and the fixture 2 and the cylindrical wedge 4 in a fixed state. It is an effect that can be carried out with high reliability without the need for a separate inspection process to ensure a certain, precise and robust by injecting the cylindrical wedge (4) into the fixture (2), which is the main process of buried anchoring construction.

Secondly, the hydraulic lock bolt mounter that performs the fixing work precisely, reliably, and powerfully as described above can be easily and conveniently performed, thereby reducing the number of construction time and thus significantly reducing the manpower and construction time, thereby achieving a significant construction cost reduction effect. .

Third, the components of the hydraulic lock bolt fixing unit having the above characteristics can be easily replaced for each component so that they can be used universally for lock bolts of various standards. It has high characteristics.

The present invention, which can expect these effects, is a very useful and practical design that can satisfy the effect of the work to be obtained in the sentence, and improve the quality of the rock bolt buried work.

Claims (1)

In combining the two front and rear cylinders 20 and 30 with one cylindrical body back and forth to configure the hydraulic lock-bolt fixing device, The front cylinder 20 is detachably provided with a head bolt 10 for guiding the lock bolt 1, the fastener 2, and the cylindrical wedge 4 to the front end thereof, and the disc flange 23 on the outer periphery of the rear end. The inner periphery is provided with a clip release port 15, the inner chamber is fitted with a press-fit piston 25 press-fitting the cylindrical wedge 4 with a spring 14, and the outer ring 26 is a hydraulic pipeline 29 ( 71 is installed in the front end side compartment of the inner ring 21 of the front cylinder 20 communicated with, and the rear cylinder 30 is installed on the inclined inner circumferential wall of the clip housing 55 with a spring 60 to be forwardly installed and clipped. The three-sided wedge-type bolt clip (50) tightening the lock bolt (1) by operation of the housing, and the bolt clip (50) is installed internally and slides with the outer ring (56) on the front compartment wall of the rear cylinder (30). The clip housing 55 and the clip housing 55 are coupled to the front end of the rear chamber 30 and the front compartment, which is the front side of the inner ring 31 of the rear cylinder, and the rear end thereof. The rear compartment wall, which is a rear side of the inner ring 31, and the outer ring 36 is provided with an operating piston 35 which is operated in front and rear of the inner ring 31 together with the clip housing 55, the front compartment wall 32 The outer ring 56 of the clip housing 55 slid to the outer ring 56 of the actuating piston sliding to the rear compartment wall 33 has a diameter smaller than that of the front cylinder 20 and the rear cylinder 30. Hydraulic lock bolt fixing unit, characterized in that the rear compartment is configured by communicating the hydraulic sockets (70) 72 and the hydraulic pipe (29) (71), respectively.