CN201353884Y

CN201353884Y - Bifilar helix extrusion shaping device of HDPE cable protecting pipe

Info

Publication number: CN201353884Y
Application number: CNU2009200366328U
Authority: CN
Inventors: 费汉兵; 吉林; 冯兆祥; 单继安; 钟建驰; 陈策; 马伟杰; 王志刚; 金平; 王昀; 刘峰
Original assignee: JIANGSU CONSTRUCTION HEADQUARTERS OF CHANGJIANG HIGHWAY AND BRIDGE; FAERSHENG ZHUDIAN NEW-MATERIAL Co Ltd JIANGYIN
Current assignee: JIANGSU CONSTRUCTION HEADQUARTERS OF CHANGJIANG HIGHWAY AND BRIDGE; FAERSHENG ZHUDIAN NEW-MATERIAL Co Ltd JIANGYIN
Priority date: 2009-02-26
Filing date: 2009-02-26
Publication date: 2009-12-02
Anticipated expiration: 2019-02-26

Abstract

The utility model relates to a bifilar helix extrusion protecting device of HDPE cable sheath pipe, which comprises a support tube (12), a toothed disc (7) and a positioning bracing frame (10), wherein the support tube (12) is hollowly sleeved outside an H D P E round pipe (5), the outer edge of the support tube (12) is provided with a flange (12.1), the toothed disc (7) is arranged outside the support tube (12), and two positioning bracing frames (10) are provided, which are mounted on the front side and the rear side of the toothed disc (7), and are evenly equipped with three balancing wheels (11), the outer edges of the balancing wheels (11) are provided with grooves (11.1), and the grooves are engaged with the flange (12.1), the toothed disc (7) is symmetrically equipped with two extrusion rollers (9) whose outer edges are provided with grooves and a roller radial adjusting device (8) along the diameter direction, wherein the extrusion rollers are mounted on one end of the roller radial adjusting device near the center of the H D P E round pipe (5), and the toothed disc drives with a pinion (14) on a speed reducer by a belt (13). The bifilar helix extrusion protecting device of HDPE cable sheath pipe makes full use of self heat energy of the H D P E round pipe and saves energy sources, and the bifilar helix on the H D P E pipe is basically and synchronously shaped with a tube body, which is not easy to drop, and has stable quality.

Description

The bifilar helix of the HDPE cable sheath tube device that is extruded to shape

(1) technical field

The utility model relates to the manufacturing installation of the member that a kind of cable-stayed bridge engineering uses, the bifilar helix that particularly relates to the HDPE cable sheath tube that a kind of steel strand stay cable the uses device that is extruded to shape.

(2) background technology

Steel strand stay cable is the lifeline of cable-stayed bridge.Large span stayed-cable bridge is because the suspension cable cable body is longer, and under the synergy of wind and rain, suspension cable can produce vibration, influences Structure Safety for Bridge.Therefore, the suspension cable that large span stayed-cable bridge is used is generally all taken measures on cable body, destroys the wind vibration frequency that causes inhaul cable vibration, with suppression of vibrations.Wind, rain and vibration resistance stay cable commonly used at present has two kinds of structural shapes: embossing drag-line and bifilar helix drag-line.The embossing drag-line is on the cable body surface pit of arranging according to certain rules to be set.The bifilar helix drag-line is the bifilar helix that projection is set on the cable body surface.Steel strand stay cable cable body anti-wind, rain and vibration mode is on the HDPE outer tube bifilar helix to be set.At present the manufacture method of double spiral HDPE pipe commonly used is: make the plastic extrusion die of band spiral type groove, be installed in mould on the extruding machine and mould can be rotated, directly make and be with protruding double spiral HDPE pipe.The shortcoming of this method is: plastic extrusion die length is long, and processed complex, cost are very high.Simultaneously, tubulation production line complex structure, the helix of projection is yielding.

(3) summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and the bifilar helix of the HDPE cable sheath tube of a kind of good product performance, the low cost of manufacture device that is extruded to shape is provided.

The purpose of this utility model is achieved in that a kind of bifilar helix of HDPE cable sheath tube device that is extruded to shape, comprise stay pipe, toothed disc and positioning supporting frame, stay pipe is placed in outside the HDPE pipe, the stay pipe outer rim is provided with flange, toothed disc is arranged at outside the stay pipe, described positioning supporting frame has two, each one of front and back, be installed in the both sides, front and back of toothed disc respectively, each evenly installs three support wheels on every positioning supporting frame, be provided with groove in described support wheel outer rim, this groove matches with the flange of stay pipe outer rim setting, is used to support whole stay pipe.Toothed disc upper edge diametric(al) is symmetrically installed with the squeezing roller and the roller radiai adjustment device of two outer marginal zone grooves, described squeezing roller is installed on an end at the close HDPE pipe center of roller radiai adjustment device, and described toothed disc is by the pinion drive on belt and the reductor.

Adopt the utility model device, after the HDPE pipe is extruded, utilize the heat that himself carries, be made into double spiral HDPE pipe by fashion of extrusion.According to the hauling speed of HDPE pipe, the adjusted in concert squeezing roller can be produced stay-in-grade double-helix HDPE cable sheath tube along the axial rotary speed of HDPE pipe.

The utility model device has the following advantages:

1, make full use of HDPE pipe self heat, energy savings, production cost is low.

2, bifilar helix on the HDPE pipe and the moulding of body basic synchronization, difficult drop-off, steady quality.

(4) description of drawings

Fig. 1 produces the process chart of double-helix HDPE cable sheath tube for adopting the utility model device.

Fig. 2 is the utility model bifilar helix apparatus structure schematic diagram that is extruded to shape.

Fig. 3 is that the A of Fig. 2 is to view.

Among the figure: barrel 1, hopper 2, bringing-up section 3, plastic extruder 4, HDPE pipe 5, internal mold 6, toothed disc 7, roller radiai adjustment device 8, squeezing roller 9, positioning supporting frame 10, support wheel 11, stay pipe 12, belt 13, pinion 14, hauling machine 16, groove 11.1, flange 12.1.

(5) specific embodiment

The production method of the double-helix HDPE cable sheath tube that the utility model relates to, it is the head outside at plastic extruder, the one bifilar helix device that is extruded to shape is installed, utilize the surplus temperature of HDPE pipe self, rely on described bifilar helix to be extruded to shape on the device and can push the HDPE pipe synchronously around the rotation of HDPE tubular axis line and the band groove that can rotate freely along self axis and two squeezing rollers of symmetric arrangement, make and form two spiral curves on the HDPE pipe outer surface synchronously, be provided with vacuum pipe on the described squeezing roller in addition, by in squeezing roller, vacuumizing, make described spiral curve cooling and shaping, be made into double spiral HDPE pipe.

Referring to Fig. 2～3, the bifilar helix described in the utility model device that is extruded to shape, comprise stay pipe 12, toothed disc 7 and positioning supporting frame 10, described stay pipe 12 is placed in outside the HDPE pipe 5, stay pipe 12 outer rims are provided with flange 12.1, toothed disc 7 is arranged at outside the stay pipe 12, described positioning supporting frame 10 has two, each one of front and back, be installed in the both sides, front and back of toothed disc 7 respectively, each evenly installs three support wheels 11 on every positioning supporting frame 10, and support wheel 11 outer rims are provided with groove 11.1, this groove 11.1 matches with the flange 12.1 of stay pipe 12 outer rim settings, is used to support whole stay pipe 12.Toothed disc 7 upper edge diametric(al)s are symmetrically installed with the squeezing roller 9 and the roller radiai adjustment device 8 of two outer marginal zone grooves, described squeezing roller 9 is installed on an end at close HDPE pipe 5 centers of roller radiai adjustment device 8, and toothed disc 7 is by pinion 14 transmissions on belt 13 and the reductor.This groove 11.1 matches with the flange 12.1 of stay pipe 12 outer rim settings.

Referring to Fig. 1, the specific embodiment that adopts the utility model device to produce double-helix HDPE cable sheath tube is:

1) bringing-up section 3 that enters the plastics extruding machine by plastics extrusion machine material barrel 1 through hopper 2 of the HDPE plastic pellet after will drying, after being heated the predetermined temperature fusion, pass through the cavity of the interior external mold formation of plastic extruder 4 continuously, extrusion molding HDPE pipe 5, the internal mold of described plastic extruder stretches out head 300～500mm, internal mold is a tubulose, is distributed with aperture on its tube wall, but blowing air.

2) the HDPE pipe 5 of extrusion molding is by hauling machine 16 tractions, and internal mold 6 straight lines that stretch out head along plastic extruder move ahead, and feeds hot-air in the internal mold, makes the inwall typing of HDPE pipe.

3) the straight-line forward while of HDPE pipe, regulate roller radiai adjustment device 8, two squeezing rollers that bifilar helix is extruded to shape on the device compress HDPE pipe outer rim, start reductor, pinion 14 driven gear dishes 7 rotate, squeezing roller 9 rotates along the circumferencial direction of HDPE pipe 5, is rotated along himself axis simultaneously.At this moment, the process that moves ahead at HDPE pipe straight line relies on the be extruded to shape thrust of device squeezing roller of the support force of plastic extruder internal mold and bifilar helix, utilizes the surplus temperature of HDPE pipe, squeezes out two helixes synchronously at the outer surface of HDPE pipe; And two squeezing rollers are vacuumized, make the helix cooling and shaping that squeezes out.

4) utilize hauling machine, the HDPE pipe is drawn continuously enter bosh 15, make HDPE pipe cooling and shaping, be made into double spiral HDPE pipe.

Claims

1, a kind of bifilar helix of HDPE cable sheath tube device that is extruded to shape, it is characterized in that described device comprises stay pipe (12), toothed disc (7) and positioning supporting frame (10), stay pipe (12) is placed in outside the HDPE pipe (5), stay pipe (12) outer rim is provided with flange (12.1), toothed disc (7) is arranged at outside the stay pipe (12), described positioning supporting frame (10) has two, each one of front and back, be installed in the both sides, front and back of toothed disc (7) respectively, every positioning supporting frame (10) is gone up each three support wheels (11) evenly is installed, be provided with groove (11.1) in described support wheel (11) outer rim, this groove (11.1) matches with the flange (12.1) that stay pipe (12) outer rim is provided with, toothed disc (7) upper edge diametric(al) is symmetrically installed with the squeezing roller (9) and the roller radiai adjustment device (8) of two outer marginal zone grooves, described squeezing roller (9) is installed on an end at close HDPE pipe (5) center of roller radiai adjustment device (8), and described toothed disc (7) is by pinion (14) transmission on belt (13) and the reductor.