CN104500073A

CN104500073A - Conveyance buffering and separating device for concrete vertical downward flowing pipeline of deep shaft

Info

Publication number: CN104500073A
Application number: CN201410686829.1A
Authority: CN
Inventors: 张馨
Original assignee: China Railway 18th Bureau Group Co Ltd
Current assignee: China Railway 18th Bureau Group Co Ltd
Priority date: 2014-11-25
Filing date: 2014-11-25
Publication date: 2015-04-08

Abstract

A conveyance buffering and separating device for a concrete vertical downward flowing pipeline of a deep shaft comprises a buffering and separating device upper tip, a buffering and separating device wall, small discs, a rib plate and a buffering and separating device lower tip, wherein the buffering and separating device wall has a cylindrical symmetric structure; a middle section of the buffering and separating device wall has a cylindrical barreled structure; the upper portion and the lower portion of the buffering and separating device wall have symmetric conical structures; the upper end and the lower end of the buffering and separating device are the buffering and separating device upper tip and the buffering and separating device lower tip respectively; the buffering and separating device upper tip is connected with a normal conveying steel tube; the buffering and separating device lower tip is connected with a high-pressure stretchable rubber tube braided with steel wires; the small discs and the rib plate are welded to the inside of the cylindrical structure of the middle of the buffering and separating device wall; the rib plate is divided into four portions which are symmetrical along the circumferential direction and are welded to the inner wall of the buffering separating device wall in a ribbed manner; and the small discs are welded to the upper portion and the lower portion of the middle of the buffering and separating device wall. The conveyance buffering and separating device is simple in structure, low in cost and convenient to operate; the time and the labor are saved; and working procedures of concrete tube plugging, buffering and separating device breakage repairing and the like are reduced, so that the working hour is saved by 40%.

Description

The resistance of a kind of deep drilled shaft concrete vertical descending Pipeline transport buffering is from device

Technical field

The invention belongs to the servicing unit that the vertical descending Pipeline transport buffering of deep drilled shaft concrete prevents from emanating, relate to the control by the vertically descending speed to buffer of pipeline and segregation of concrete under well depth 50 ~ 500m vertical shaft height drop state.

Background technology

According to theory calculate and Construction practices, in deep shaft work progress, after vertical shaft reaches degree of depth 50m, concrete transport has two kinds of methods: one is adopt bottom discharge bucket, and two is adopt steel pipe market; Steel pipe comparatively bottom discharge bucket advantageously, take up room little, transporting velocity is fast, concrete quality is controlled, and management link is few, is conducive to reducing construction cost, accelerate lining cutting speed, particularly realize parallel performance of driving and masonry at the work plane that vertical shaft is limited, and increase substantially efficiency of construction.At present, the resistance of steel pipe buffering mainly adopts caecum formula, staggered form from device, and in the vertical descending process of concrete, caecum place, infall play cushioning effect, prevent concrete disintegration, but the vertical downstream rate of concrete is fast, impact force large, easily formation caecum place, infall concrete bulk deposition cause plugging, process plugging difficulty, holding time is long, potential safety hazard is large, affects construction speed, and caecum place, infall are easily broken replacing often, costly by concrete.

Each plugging process or pending buffer resistance break maintenance from device, and expend time in length, incurs loss through delay borehole wall concreting, cause a hidden trouble to borehole wall construction quality.

Summary of the invention

The object of the present invention is to provide the device that a kind of structure is simple, easy to use, economic and practical, in order to solve current deep shaft steel pipe caecum formula, the resistance of staggered form buffering from the easy plugging of device and the difficult problem that breaks, simultaneously effectively control the vertical downstream rate of concrete and segregation problem.

For achieving the above object, the technical scheme that this practicality adopts is that the vertical descending Pipeline transport buffering of a kind of deep drilled shaft concrete hinders from device, and this device comprises buffering and hinders from device upper end 1, buffering resistance from device wall 2, roundel 3, gusset 4, cushions resistance from device lower end 5; Described buffering resistance is cylindrical shape symmetrical structure from device wall 2, and interlude is column barrel assembling structure, and upper and lower two parts are symmetrical pyramidal structure; Buffering resistance is respectively buffering resistance from device upper end 1, buffering resistance from device lower end 5 from the two ends up and down of device, and buffering resistance connects normal conveying steel pipe from device upper end 1, and buffering resistance connects steel from device lower end 5 and compiles high-pressure telescopic sebific duct; Described buffering resistance is welded with roundel 3, gusset 4 from the intermediate cylindrical inside configuration of device wall 2; Described gusset 4 is divided into four circumferentially symmetrical part muscle to be welded on buffering resistance from the inwall of device wall 2, and the top and the bottom in the middle of it are welded with roundel 3.

Beneficial effect of the present invention: the resistance of drum type brake buffering is simple from apparatus structure, low cost, simple operation, time saving and energy saving; For minimizing concrete plugging process, buffering resistance are broken the operations such as maintenance from device and saved man-hour 40%.

Accompanying drawing explanation

Fig. 1 is that the resistance of drum type brake buffering is from device schematic cross-section.

Fig. 2 is that the resistance of drum type brake buffering is from device roundel floor map.

Fig. 3 is that the resistance of drum type brake buffering is from device working state schematic representation.

In figure: 1, buffering resistance is from device upper end, 2, buffering resistance from device wall, 3, roundel, 4, gusset, 5, buffering resistance is from device lower end.

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is described in further detail.

As Figure 1-3, normal conveying steel pipe hinders with buffering and is connected from device upper end 1, concrete vertically goes downwards to the cylindrical barrel top of increase along normal conveying steel pipe, through the stop of roundel 3, concrete disperses, and rate reduction, decelerates to cylinder bottom by gusset 4 continuation part, enter steel by buffering resistance from device lower end 5 after concrete collects and compile high-pressure telescopic sebific duct, and then enter mould and build the borehole wall.

Buffering resistance to adopt in the middle of increase cylinder interior by gusset welding resistance from roundel from device, and the cylinder of increase can continue descending smoothly after being used for concrete collision roundel 3, to hinder from roundel 3 for cushioning, concrete that discrete vertical is descending; The cylinder top splendid attire increased vertical descending concrete through collision rift from normal steel pipe, collective low is through the concrete of buffering, dispersion; Roundel 3 for cushioning, concrete that discrete vertical is descending, prevent concrete from piling up and segregation.The fixing roundel 3 of gusset 4 and partial buffer, resistance are from concrete.

For ensureing concrete pouring quality; resistance can be cushioned at drum type brake and connect steel volume high-pressure telescopic sebific duct from device bottom, ensure that concrete enters mould by steel volume high-pressure telescopic sebific duct hoop and builds the borehole wall, avoid concrete stream to impact well side; produce segregation, guarantee concrete pouring quality.

Claims

1. the resistance of deep drilled shaft concrete vertical descending Pipeline transport buffering is from a device, it is characterized in that: this device comprises buffering resistance from device upper end (1), buffering resistance from device wall (2), roundel (3), gusset (4), buffering resistance from device lower end (5); Described buffering resistance is cylindrical shape symmetrical structure from device wall (2), and interlude is column barrel assembling structure, and upper and lower two parts are symmetrical pyramidal structure; Buffering resistance is respectively buffering resistance from device upper end (1), buffering resistance from device lower end (5) from the two ends up and down of device, buffering resistance connects normal conveying steel pipe from device upper end (1), and buffering resistance connects steel from device lower end (5) and compiles high-pressure telescopic sebific duct; Described buffering resistance is welded with roundel (3), gusset (4) from the intermediate cylindrical inside configuration of device wall (2); Described gusset (4) is divided into four circumferentially symmetrical part muscle to be welded on buffering resistance from the inwall of device wall (2), and the top and the bottom in the middle of it are welded with roundel (3).

2. the resistance of a kind of deep drilled shaft concrete according to claim 1 vertical descending Pipeline transport buffering is from device, it is characterized in that: normal conveying steel pipe hinders with buffering and is connected from device upper end (1), concrete vertically goes downwards to the cylindrical barrel top of increase along normal conveying steel pipe, through the stop of roundel (3), concrete disperses, rate reduction, cylinder bottom is decelerated to by gusset (4) continuation part, enter steel by buffering resistance from device lower end (5) after concrete collects and compile high-pressure telescopic sebific duct, and then enter mould and build the borehole wall;

Buffering is hindered and is hindered from roundel by gusset welding in the middle of increase cylinder interior from device employing, the cylinder increased can continue descending smoothly after being used for concrete collision roundel (3), to hinder from roundel (3) for cushioning, concrete that discrete vertical is descending; The cylinder top splendid attire increased vertical descending concrete through collision rift from normal steel pipe, collective low is through the concrete of buffering, dispersion; Roundel (3) for cushioning, concrete that discrete vertical is descending, prevent concrete from piling up and segregation; Gusset (4) plays fixing roundel (3) and partial buffer, hinders from concrete.