CN1396014A - Technology for making head plate of tabular concrete pile by cold bending method - Google Patents

Abstract

A technology for manufacturing the end plate of tubular concrete pile by cold bending incldues such steps as making a steel band with trapezoidal cross section, preparing several cylindrical dies, winding the steel band around the said die by more than 2 turns to form a spiral cylinder, cutting open to form several spiral sheets, flatening each of them, and butt welding. Its advantages are high utilziation rate of material (94-96%) and low cost.

Description

Technology for making head plate of tabular concrete pile by cold bending method

Technical field:

The present invention relates to building material technical field, specifically a kind of technology for making head plate of tabular concrete pile by cold bending method.

Background technology:

Growing along with China's economic construction, people are also increasing to the demand of concrete tubular pile end plate, present China available coagulation soil pile tube end plate adopts flame to cut on big block plate basically and obtains, and the concrete tubular pile end plate that adopts this method to produce unavoidably following problem can occur:

1, the utilization rate of steel plate is low, be the waste material of generation as the mark in the accompanying drawing 11,2,3,4,5, adopt the utilization rate of flame full circle cutting steel plate to be about 45%, adopt two arc plates to be welded into annulus two place's weld seams are arranged, the utilization rate of steel plate is about 60%, adopting the three-arc sheet to be welded into annulus has three place's weld seams, and the utilization rate of steel plate is about 70%;

2, owing to adopt flame to cut easy contaminated environment;

3, more because of the waste material that produces, the utilization rate of steel plate is low, causes the production cost height.

Summary of the invention:

The object of the present invention is to provide a kind of technology for making head plate of tabular concrete pile by cold bending method, it can improve the utilization rate of steel.

Technical scheme of the present invention is achieved in that technology for making head plate of tabular concrete pile by cold bending method, it is characterized in that:

A, the end plate blank made trapezoidal cross-section steel band with gradient;

B, make several cylinders shape mould;

C, the trapezoidal cross-section steel band with gradient that will make become the above borded pile of two circles around one of them cylindrical die clod wash;

D, incision borded pile, formation has the flight of the monolithic helicoid of otch;

E, the flight that will have a monolithic helicoid of otch flatten, and weld the otch seam and promptly form the pile tube end plate.

The utilization rate that adopts clod wash of the present invention to make the steel of concrete tubular pile end plate is 94-96%, improved the utilization rate that steel are made in the clod wash of concrete tubular pile end plate, weld seam has only one, has reduced production cost, and need not adopt flame cutting to reduce pollution to environment.

Description of drawings:

Fig. 1 is the schematic diagram of available technology adopting flame full circle cutting steel plate

Fig. 2 makes the trapezoidal cross-section steel band schematic diagram with gradient among the present invention with the end plate blank

Fig. 3 becomes the schematic diagram of borded pile for the trapezoidal cross-section steel strip cold-bending that will have gradient among the present invention

The schematic diagram of Fig. 4 among the present invention borded pile being cut

Fig. 5 is among the present invention being cut into borded pile the schematic diagram of flight

Fig. 6 is for welding the schematic diagram that forms the pile tube end plate with the flight pressing among the present invention

The specific embodiment:

The invention will be further described and provide embodiment below in conjunction with accompanying drawing.The present invention is a technology for making head plate of tabular concrete pile by cold bending method, and it is different from prior art and is:

A, the end plate blank made trapezoidal cross-section steel band with gradient;

B, make several cylinders shape mould;

C, the trapezoidal cross-section steel band with gradient that will make become the above borded pile of two circles around one of them cylindrical die clod wash;

D, incision borded pile, formation has the flight of the monolithic helicoid of otch;

E, the flight that will have a monolithic helicoid of otch flatten, and weld the otch seam and promptly form the pile tube end plate.The pitch that has the trapezoidal cross-section steel band of gradient when implementing is the 16-30 millimeter, and the diameter of cylindrical die is the 300-1200 millimeter.

Embodiment 1

A, the pitch that the end plate blank is made gradient are 16 millimeters trapezoidal cross-section steel bands;

B, the diameter of making cylindrical die are 300 millimeters;

C, the pitch with gradient that will make are that 16 millimeters trapezoidal cross-section steel bands are 300 millimeters cylindrical dies around diameter, and clod wash becomes the borded pile of 18 circles;

D, incision borded pile, formation has the flight of the monolithic helicoid of otch;

E, the flight that will have a monolithic helicoid of otch flatten, and weld the otch seam and promptly form the pile tube end plate.

Embodiment 2

A, the pitch that the end plate blank is made gradient are 20 millimeters trapezoidal cross-section steel bands;

B, the diameter of making cylindrical die are 600 millimeters;

C, the pitch with gradient that will make are that 20 millimeters trapezoidal cross-section steel bands are 600 millimeters cylindrical dies around diameter, and clod wash becomes the borded pile of 15 circles;

D, incision borded pile, formation has the flight of the monolithic helicoid of otch;

E, the flight that will have a monolithic helicoid of otch flatten, and weld the otch seam and promptly form the pile tube end plate.

Embodiment 3

A, the pitch that the end plate blank is made gradient are 22 millimeters trapezoidal cross-section steel bands;

B, the diameter of making cylindrical die are 800 millimeters;

C, the pitch with gradient that will make are that 22 millimeters trapezoidal cross-section steel bands are 800 millimeters cylindrical dies around diameter, and clod wash becomes the borded pile of 10 circles;

D, incision borded pile, formation has the flight of the monolithic helicoid of otch;

E, the flight that will have a monolithic helicoid of otch flatten, and weld the otch seam and promptly form the pile tube end plate.

Embodiment 4

A, the pitch that the end plate blank is made gradient are 25 millimeters trapezoidal cross-section steel bands;

B, the diameter of making cylindrical die are 1000 millimeters;

C, the pitch with gradient that will make are that 20 millimeters trapezoidal cross-section steel bands are 1000 millimeters cylindrical dies around diameter, and clod wash becomes the borded pile of 10 circles;

D, incision borded pile, formation has the flight of the monolithic helicoid of otch;

E, the flight that will have a monolithic helicoid of otch flatten, and weld the otch seam and promptly form the pile tube end plate.

Embodiment 5

A, the pitch that the end plate blank is made gradient are 30 millimeters trapezoidal cross-section steel bands;

B, the diameter of making cylindrical die are 1200 millimeters;

C, the pitch with gradient that will make are that 30 millimeters trapezoidal cross-section steel bands are 1200 millimeters cylindrical dies around diameter, and clod wash becomes the borded pile of 6 circles;

D, incision borded pile, formation has the flight of the monolithic helicoid of otch;

E, the flight that will have a monolithic helicoid of otch flatten, and weld the otch seam and promptly form the pile tube end plate.

Claims (2)

1, technology for making head plate of tabular concrete pile by cold bending method is characterized in that:

A, the end plate blank made trapezoidal cross-section steel band with gradient;

B, make several cylinders shape mould;

C, the trapezoidal cross-section steel band with gradient that will make become the above borded pile of two circles around one of them cylindrical die clod wash;

D, incision borded pile, formation has the flight of the monolithic helicoid of otch;

E, the flight that will have a monolithic helicoid of otch flatten, and weld the otch seam and promptly form the pile tube end plate.

2, by the described technology for making head plate of tabular concrete pile by cold bending method of claim 1, it is characterized in that: the pitch with trapezoidal cross-section steel band of gradient is the 16-30 millimeter, and the diameter of cylindrical die is the 300-1200 millimeter.

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