CN102182181B - Device for lowering anchor cable - Google Patents

Abstract

The invention discloses a cable lowering device for long and heavy anchor cables. The steel wire rope on the winch goes around the fixed pulley and passes through the vertical limit frame and the oblique limit frame. Fixed, the vertical limit frame and the fixed pulley are fixed on the scaffold with steel pipes, the vertical limit frame and the fixed pulley are arranged near the outer axis of the borehole, and the oblique limit fixed on the scaffold is set below the vertical limit frame. bit frame. Both the vertical limit frame and the oblique limit frame are lapped with four steel pipes to form a zigzag shape and the upper and lower horizontal steel pipes are covered with sleeve pipes. The setting quantity of the oblique limit frame is determined according to the height of the drill hole from the anchor cable placement platform, and the setting angle of the oblique limit frame decreases from top to bottom. The wire rope is tied to the full length of the anchor cable and fixed at the outer end of the anchor cable. The vertical limit frame and the fixed pulley are arranged on the outer axis of the borehole, so that the anchor cable can be fed smoothly along the borehole axis. The structure is simple, easy to use, saves human resources, easy to operate, and high in efficiency.

Description

An anchor cable lowering device

technical field

The invention relates to the technical field of geotechnical anchoring engineering, and more particularly relates to an anchor cable lowering device, which is used for anchor cable reinforcement in geotechnical engineering, especially for long and heavy anchor cable reinforcement constructions of various large-scale slopes.

Background technique

At present, anchor cables are widely used in geotechnical engineering reinforcement. Most of them are lowered by manpower. The advantage is that there are more human resources on the construction site, and the operation is simple. It is more suitable for shorter and lighter anchor cables. Construction, but the labor intensity of manpower lowering the cable is high, requiring the close cooperation of the lowering personnel, low installation efficiency and poor safety, especially for some large-scale anchoring projects, the length of the anchor cable is tens of meters, and the weight is as high as several hundred kilograms. There are many people required for lowering the cable in the way, and the operation is very difficult, which often causes the anchor cable to be lowered. A wind-driven long anchor cable installation machine used in underground mining of mines uses wind pressure to push and lower the anchor cable. This method has a high construction cost and general construction effect, so it is not available in the field of slope anchoring engineering. application. Other lowering devices generally use a hole bottom device, which is fixed at the bottom of the hole by pins, clips and slots, etc., and the top pull method is used to lower the cable. These top pull and lower cable devices have complex structures and stable construction. Poor performance, easy to occur technical problems such as the hole bottom device is not firmly fixed, because of its poor practicability and can not be promoted.

Contents of the invention

The purpose of the present invention is to provide an anchor cable lowering device, which adopts a vertical limit frame and fixed pulleys arranged on the outer axis of the borehole, so that the anchor cable can be smoothly fed along the borehole axis, has a simple structure and is easy to use. It saves human resources, is convenient to operate, and has high efficiency of lowering the cable.

In order to achieve the above object, the present invention adopts the following technical measures:

An anchor cable lowering device is composed of a hoist, a steel wire rope, a fixed pulley, a vertical limit frame, an oblique limit frame, an anchor cable, a drill hole, and an iron wire. Its connection relationship is: the wire rope on the winch goes around the fixed pulley and passes through the vertical limit frame, and the oblique limit frame is bound with the full length of the anchor cable with iron wire and fixed at the end of the anchor cable. Both the vertical limit frame and the fixed pulley are fixed on the construction scaffold with steel pipes, the vertical limit frame and the fixed pulley are arranged near (near) the outer axis of the borehole, and then the oblique limit is set according to the height of the borehole from the ground frame.

The vertical spacer frame and the oblique spacer frame are separated by 1-2m in the horizontal and vertical directions respectively, and each spacer frame is lapped with four steel pipes to form a zigzag shape and fixed on the construction scaffold with fasteners. The upper and lower horizontal steel pipes of the frame are covered with free-rolling sleeves.

The setting angle of the oblique limiting frame is about 70°, and 1~2 oblique limiting frames can be appropriately added according to the height of the drill hole from the ground where the anchor cable is placed (the vertical distance is generally 1.5~2.5m), and the setting angle Decrease to 50° and 30° from top to bottom, and the additional oblique limit frames are all fixed on the construction scaffolding.

The steel wire rope is tied to the full length of the anchor cable and fixed at the outer end of the anchor cable. The binding distance is about 2m. During the lowering process, the fixed pulley is cut while the cable is lowered, and the steel wire rope and the iron wire of the anchor cable are bound to achieve continuous and smooth lowering. the goal of.

The vertical limit frame and the fixed pulley are arranged near (near) the outer axis of the borehole.

Compared with the prior art, the present invention has the following advantages and effects:

Use hoist, steel wire rope and fixed pulley to lower the cable, which saves a lot of labor cost, simple structure, convenient operation and high efficiency of cable lowering, the speed of lower cable can be controlled at 7~8m/min; vertical limit frame and oblique limit The position frame can effectively control the cable force loss caused by the upward bending of the anchor cable during the cable lowering process; the vertical limit frame and the fixed pulley are arranged near (near) the outer axis of the drilling hole, so that the anchor cable can be sent smoothly along the drilling axis enter.

Description of drawings

Figure 1 is a schematic diagram of the structure of an anchor cable lowering device.

in:

1—Hoist (purchased in the market), 2—Wire rope, 3—Fixed pulley (purchased in the market), 4—Vertical limit frame (made on site, ordinary skilled workers can prepare without any creative labor); 5—Slanted Limiting frame (made on site, ordinary skilled workers can prepare without any creative labor); 6—anchor cable (made on site, ordinary skilled workers can prepare without any creative labor), 7—drilling, 8— iron wire.

Detailed ways

Example 1:

The present invention will be further described in detail in conjunction with FIG. 1 .

An anchor cable lowering device, which is composed of a winch 1, a steel wire rope 2, a fixed pulley 3, a vertical limit frame 4, an oblique limit frame 5, an anchor cable 6, a drill hole 7, and an iron wire 8. The connection relationship is: the steel wire rope 2 on the winch 1 bypasses the fixed pulley 3 and passes through the vertical limit frame 4, and the oblique limit frame 5 is bound with the full length of the anchor cable 6 with the iron wire 8 and fixed at the end of the anchor cable 6 , binding interval 2m. After the anchor cable 6 (which can be prepared by ordinary skilled workers) is completed, the fixed positions of the vertical limit frame 4 and the fixed pulley 3 are determined according to the orientation of the drill hole 7, and the vertical limit frame 4 and the fixed pulley 3 are all made of steel pipes. (not shown in accompanying drawing 1) is fixed on the construction scaffolding (not shown in accompanying drawing 1). Then according to the height of drilling 7 apertures from the ground, the oblique limit frame 5 is set. The specific method is to set an oblique limit frame 5 every 2~3m from the platform where the anchor cable 6 is placed to the height of the hole 7, and the horizontal steel pipes on the vertical limit frame 4 and the oblique limit frame 5 are all covered with The purpose of the steel sleeve is to eliminate the phenomenon of the anchor cable 6 being stuck and reduce friction during the lowering process. Start the hoist 1 to pull the steel wire rope 2, so that the anchor cable 6 passes through the oblique limit frame 5 and the vertical limit frame 4 to enter the borehole 7, and the cable is lowered at a constant speed by controlling the lowering speed to 7-8m/min.

Described vertical limit frame 4 is made up of four steel pipes and two sleeve pipes, respectively sets a sleeve pipe on two steel pipes, and assembles with other two steel pipes with fasteners to form a vertical limiter of mouth shape. Position frame 4, two steel pipes with sleeve pipe constitute the upper and lower horizontal sides of the vertical limit frame, and the vertical limit frame 4 is fixed on the construction scaffold with fasteners.

The oblique limiting frame 5 is composed of four steel pipes and two sleeves, one sleeve is placed on each of the two steel pipes, and assembled with the other two steel pipes with fasteners to form a mouth-shaped oblique limiting frame 5. Position frame 5, two steel pipes with sleeve pipe constitute the upper and lower horizontal edges of the oblique position limiting frame, and the oblique position limiting frame 5 is fixed on the construction scaffold with fasteners.

The anchor cable 6 refers to the process of blanking, peeling, loosening, degreasing, installing spacers, fasteners, bearings, guide caps, grout stoppers, grouting pipes and exhaust pipes according to the design requirements. The reinforced body of rock and soil formed after a series of processes.

Claims (6)

1. rope device under one kind long weight anchor rope, by hoist engine (1), vertical spacing framework (4), oblique spacing framework (5) and fixed pulley (3) are formed, it is characterized in that: the wire rope (2) on the hoist engine (1) is walked around fixed pulley (3) and is passed vertical spacing framework (4), oblique spacing framework (5), with iron wire with wire rope (2) and anchor cable (6) total length colligation, wire rope (2) is fixed at anchor cable (6) tail end, vertical spacing framework (4) and fixed pulley (3) are fixed on the construction scaffolding with fastener, vertical spacing framework (4) and fixed pulley (3) are arranged in by the outer axis of boring (7), according to hell (7) height overhead oblique spacing framework (5) is set

Vertical spacing framework (4) and oblique spacing framework (5) respectively in level and vertical direction at a distance of 1 ~ 2m, each spacing framework with four steel tube lappings become square shape and about two horizontal steel pipes put sleeve pipe.

2. rope device under a kind of long weight anchor rope according to claim 1, it is characterized in that: it is 70 ° that described oblique spacing framework (5) arranges angle, place ground level according to hell (7) from anchor cable (6) and increase by 1 ~ 2 oblique spacing framework (5), oblique spacing framework (5) vertical interval each other is 1.5 ~ 2.5m, the angle that arranges of 1 ~ 2 oblique spacing framework (5) of setting up is decremented to 50 °, 30 ° from top to bottom successively, and the oblique spacing framework of setting up (5) is fixed on the construction scaffolding.

3. rope device under a kind of long weight anchor rope according to claim 1 is characterized in that: described wire rope (2) is fixed on anchor cable (6) tail end, colligation spacing 2m with anchor cable (6) total length colligation and with wire rope (2).

4. rope device under a kind of long weight anchor rope according to claim 1, it is characterized in that: described vertical spacing framework (4) and fixed pulley (3) are arranged on by the outer axis of boring (7).

5. rope device under a kind of long weight anchor rope according to claim 1, it is characterized in that: described vertical spacing framework (4) is made up of four steel pipes and two sleeve pipes, on two steel pipes, respectively overlap a sleeve pipe respectively, and be assembled into the vertical spacing framework of hollow (4) with other two steel pipes with fastener, two steel pipes that have sleeve pipe constitute the horizontal sides up and down of vertical spacing framework, with fastener vertical spacing framework (4) are fixed on the construction scaffolding.

6. rope device under a kind of long weight anchor rope according to claim 1, it is characterized in that: described oblique spacing framework (5) is made up of four steel pipes and two sleeve pipes, on two steel pipes, respectively overlap a sleeve pipe respectively, and be assembled into the oblique spacing framework of hollow (5) with other two steel pipes with fastener, two steel pipes that have sleeve pipe constitute the horizontal sides up and down of oblique spacing framework, with fastener oblique spacing framework (5) are fixed on the construction scaffolding.

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