CN113585450B

CN113585450B - Roof gutter and construction method thereof

Info

Publication number: CN113585450B
Application number: CN202110715266.4A
Authority: CN
Inventors: 李明; 陈瑞玲; 龙海为
Original assignee: Guangdong Zhongcheng Construction Group Co ltd
Current assignee: Guangdong Zhongcheng Construction Group Co ltd
Priority date: 2021-06-26
Filing date: 2021-06-26
Publication date: 2022-06-21
Anticipated expiration: 2041-06-26
Also published as: CN113585450A

Abstract

The application relates to a roof gutter and a construction method thereof, wherein the roof gutter comprises a base and pipe fittings which are all prefabricated, the base and the pipe fittings are all of channel steel structures, a house is of a steel structure type and is composed of a plurality of groups of cross beams, and the base is arranged on saddle parts of two groups of pitched roof roofs; the base is horizontally fixed on a cross beam on a roof, the pipe fitting is inserted into the base, the pipe fitting is of an outer curled edge structure, and curled edges on two sides of the pipe fitting are hung on wing plates on two sides of the base; a plurality of groups of waterproof plates are laid on the inclined planes on the two sides of the roof, the lower end parts of the groups of waterproof plates are tightly pressed with the outer curled edge of the pipe fitting, and a plurality of groups of fastening bolts which penetrate through the pipe fitting and are in threaded connection with the wing plate of the base are arranged at the lower end parts of the waterproof plates; one side of the pipe fitting is plugged, and the other side of the pipe fitting is communicated with a vertically arranged sewer pipe. This application is respectively organized waterproof board and pipe fitting and has been realized once installing with the help of respectively organizing fastening bolt, and holistic construction operating efficiency is higher, has promoted the installation rate.

Description

Roof gutter and construction method thereof

Technical Field

The application relates to the field of building construction, in particular to a roof gutter and a construction method thereof.

Background

With the rapid development of modern society, the scale of buildings is continuously promoted. In the process of building construction, a waterproof structure of a roof is one of key steps in construction design, and in the existing house design process, no matter a flat-top house or an inclined-top house, a gutter is a structure which needs to be considered emphatically in a drainage structure of the roof.

Structurally, a gutter refers to the recessed portion of a building roof between two spans. The organized drainage of water and unorganized drainage (free drainage) of the roof drainage, the organized drainage is to collect the rainwater falling on the roof into the gutter generally, and then drain by the rainwater pipe, the gutter to collect rainwater is called gutter, the gutter is internal gutter and external gutter, the internal gutter is gutter within the external wall, there is parapet generally; the outer gutter is a gutter extending out of the outer wall, and generally has no parapet wall.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: the existing roof is in the construction process, a ditch is concavely arranged at the position of the gutter, the inside of the ditch is paved and pasted by means of tiles, and then the waterproof coiled material is constructed, so that the construction operation process of the gutter is more complicated, the labor efficiency of constructors is lower, and the improved space exists.

Disclosure of Invention

In order to facilitate construction of the roof gutter and improve the overall construction efficiency of the roof gutter, the application provides the roof gutter and the construction method thereof.

The roof gutter and the construction method thereof adopt the following technical scheme:

a roof gutter comprises a base and pipe fittings which are all prefabricated, wherein the base and the pipe fittings are both of channel steel structures, a house is of a steel structure type and is composed of a plurality of groups of cross beams, and the base is installed on saddle portions of two groups of pitched roof roofs; the base is horizontally fixed on a cross beam on a roof, the pipe fitting is inserted into the base, the pipe fitting is of an outer curled edge structure, and curled edges on two sides of the pipe fitting are hung on wing plates on two sides of the base; a plurality of groups of waterproof plates are laid on the inclined planes on the two sides of the roof, the lower end parts of the groups of waterproof plates are tightly pressed with the outer curled edge of the pipe fitting, and a plurality of groups of fastening bolts which penetrate through the pipe fitting and are in threaded connection with the wing plate of the base are installed at the lower end parts of the waterproof plates; one side of the pipe fitting is plugged, and the other side of the pipe fitting is communicated with a vertically arranged sewer pipe.

By adopting the technical scheme, before the roof gutter is constructed, all groups of prefabricated bases and pipe fittings are installed, the bases are fixedly connected with the horizontally arranged cross beam of the roof, the bases and the cross beam are integrally connected, and when the pipe fittings are buckled in the notches of the bases, the bases support the pipe fittings; for each group of waterproof plates on the oblique roofs on the two sides, the waterproof plates are spliced and installed along the roofs, the waterproof plates and the pipe fittings are fixed on the base by virtue of each group of fastening bolts, the fastening bolts penetrate through the outer rolling surfaces on one sides of the waterproof plates and the pipe fittings, thereby realizing the fixed connection of the waterproof board and the pipe fittings by means of each group of fastening bolts, finishing the preliminary installation of the roof gutter structure, when raining, the rain water on the roof can flow into the pipe fittings along the roof, the rain water further continuously flows into the downpipe under the action of gravity, the arrangement completes the drainage of roof rainwater to underground water flow, compared with the traditional construction mode of laying ceramic tiles and then carrying out waterproof coiled materials, in the application, each group of waterproof plates and pipe fittings are installed at one time by means of each group of fastening bolts, the overall construction operation efficiency is high, and the installation speed is increased.

Preferably, the distance between the vertical end surfaces of the wing plates on the two sides of the pipe fitting, which are deviated from each other, is smaller than the width of the notch of the base, and the height of the wing plates on the two sides of the pipe fitting is smaller than the depth of the notch of the base; and a foaming layer is filled between the inner groove surface of the base and the pipe fitting.

Through adopting above-mentioned technical scheme, inside the notch that above-mentioned size setting made the base can be pegged graft smoothly to the pipe fitting, be connected down with the base in both sides outside the hem, the foaming layer is filled the space between base notch inner wall and the pipe fitting outer wall, the bonding effect on foaming layer has not only promoted the fastness of pipe fitting inside the base, foaming layer self is loose porous simultaneously, when the roof rainwater flows to pipe fitting inside, the foaming layer carries out the separation to the inside rainwater of pipe fitting because of the noise that flows the production this moment, indoor noise is alleviated when making the rainfall.

Preferably, a scraping plate is arranged inside the pipe fitting, the lower end part of the scraping plate is connected with the inner bottom surface of the pipe fitting in a sliding manner, two ends of the pipe fitting are rotatably connected with fixed pulleys, two groups of fixed pulleys distributed up and down are rotatably connected inside the sewer pipe, ropes are laid inside the pipe fitting and are in wound connection with the fixed pulleys, and the ropes penetrate through the scraping plate and are fixed in a fastening manner; the sewer pipe is provided with two groups of wall openings which are distributed up and down, and the rope extends to the outer wall of the sewer pipe between the two groups of wall openings.

Through adopting the above technical scheme, the scraper blade is located inside the pipe fitting, each group's fixed pulley is installed inside pipe fitting and sewer pipe, the rope is located inside the pipe fitting, the rope runs through the scraper blade and carries out the tie and fix, when the inside more dust that falls that deposits of pipe fitting, cleaner stands subaerial this moment, hold the rope between two sets of wall mouths, constantly stimulate the rope, make the rope rotate along each group's fixed pulley, and then realized the motion of scraper blade in the inside of pipe fitting, the scraper blade is scraped the dust of pipe fitting inside, constantly along with the motion of scraper blade, make the inside dust of pipe fitting constantly scraped, and inside propelling movement of sewer pipe, the dust constantly falls along the sewer pipe, the cleaning operation to the inside dust of pipe fitting has been realized.

Preferably, the vertical inner walls of the two sides of the pipe fitting are all concavely provided with wall grooves which are horizontally arranged, the two sides of the scraper are rotated and are all connected with rollers, and the rollers and the wall grooves are connected in an inserting and rotating mode.

Through adopting above-mentioned technical scheme, the gyro wheel of scraper blade both sides is pegged graft with the wall groove of both sides and is slided, and the aforesaid sets up the frictional resistance that has reduced the scraper blade when the pipe fitting is inside to be removed, and the cleanup crew of being convenient for holds the rope and stimulates the scraper blade, and intensity of labour when having reduced the pulling rope has promoted the convenience.

Preferably, a plurality of groups of clamping seats vertically distributed up and down are fixed on the wall body, and the sewer pipe is clamped and fixed with each group of clamping seats.

By adopting the technical scheme, the clamping seats are arranged on the wall body, the clamping seats of all groups are arranged up and down, the sewer pipes are inserted into the clamping seats distributed up and down of all groups, the arrangement realizes the fixed installation of the sewer pipes on the wall body, the sewer pipes are not easy to separate from the wall body, and the sewer pipes are not easy to vibrate when draining.

Preferably, the vertical inner wall of both sides of pipe fitting is all protruding to be equipped with the locating plate that the level set up, the inside filter screen of pegging graft of pipe fitting, the width of filter screen with the notch width of pipe fitting is the same, the filter screen is laid inside the pipe fitting, filter screen both sides border with the locating plate butt.

Through adopting above-mentioned technical scheme, the locating plate is located the inner wall of pipe fitting both sides respectively, and the filter screen is laid inside the pipe fitting, and the filter screen realizes the cover to the pipe fitting notch, and when near the trees of house constantly fallen, the branch and leaf that falls this moment scatters on the roofing, and the filter screen plays the separation effect to the branch and leaf that scatters, has avoided inside the branch and leaf gets into the pipe fitting.

Preferably, a plurality of groups of corner connectors are arranged on the vertical end faces of the outer sides of the wing plates on the two sides of the base, and the wing plates on the two sides of each group of corner connectors are respectively connected with the base and the cross beam through screws.

Through adopting above-mentioned technical scheme, each group's angle sign indicating number is connected base and crossbeam, and the detachable connection of base with the crossbeam has been realized to the aforesaid setting, when this kind of house later stage carries out the dismouting, takes off the screw on each group's angle sign indicating number, and the removable setting in this kind of house has been realized to the above-mentioned process, is convenient for carry out the secondary installation, has promoted the utilization ratio.

Preferably, the two ends of the pipe fitting are respectively plugged with a vertically arranged limiting plate, and a gap is formed between the limiting plate and the inner bottom surface of the pipe fitting; the rope penetrates through the limiting plate, and the rope and the limiting plate are inserted and slid.

By adopting the technical scheme, the limiting plates are positioned at the two ends of the pipe fitting, and the limiting plate far away from one end of the sewer pipe blocks the pipe fitting, so that rainwater is prevented from flowing out of the end; the limiting plate close to one end of the downcomer forms the limit of the scraper in the pipe fitting, so that the scraper is not easy to collide with the downcomer when moving in the pipe fitting.

A roof gutter and a construction method thereof are characterized in that:

a. constructing a steel structure house, and paving each group of cross beams on the upper end surface of the house;

b. mounting the cross beam of the base at the middle position, and fixedly connecting the base and the cross beam by virtue of each group of corner connectors; spraying a foaming agent inside the notch of the base, and inserting the pipe fitting into the notch of the base; mounting each group of clamping seats on a wall body, and mounting a sewer pipe;

c. mounting each group of fixed pulleys, performing winding connection rotation on the rope and each group of fixed pulleys, mounting the scraper in the pipe fitting, inserting and driving the two groups of rollers and the wall groove, and penetrating the rope through the scraper and performing knotting fixation; mounting the limiting plate and the filter screen;

d. the waterproof plate on the roofs on the two sides is laid, the lower end parts of all groups of waterproof plates are abutted to the outer flange on one side of the pipe fitting, all groups of fastening bolts are installed, the fastening bolts vertically penetrate through the waterproof plates and the outer flange, and the tapping ends of the fastening bolts are in threaded connection with the vertical wing plates of the base.

By adopting the technical scheme, when the roof gutter is constructed, the base is integrally connected with the cross beam through each group of corner connectors, the foaming agent is sprayed inside the notch of the base, the outer curled edges on two sides of the pipe fitting are installed with the base, and the base forms a support for the pipe fitting; the filter screen is laid, and the filter screen covers the notch of the pipe fitting, so that branches and leaves are prevented from entering the pipe fitting; the sewer pipe is communicated with the pipe fitting and conveys the water body in the pipe fitting to the ground; when the dust deposits in the pipe fitting, the rope is pulled at the moment, so that the scraper slides along the pipe fitting, and the pipe fitting cleaning operation is performed.

In summary, the present application includes at least one of the following beneficial technical effects:

1. for each group of waterproof plates on the oblique roofs on the two sides, the waterproof plates are spliced and installed along the roofs, the waterproof plates and the pipe fittings are fixed on the base by virtue of each group of fastening bolts, the fastening bolts penetrate through the outer rolling surfaces on one sides of the waterproof plates and the pipe fittings, thereby realizing the fixed connection of the waterproof board and the pipe fittings by means of each group of fastening bolts, finishing the preliminary installation of the roof gutter structure, when raining, the rain water on the roof can flow into the pipe fittings along the roof, the rain water further continuously flows into the downpipe under the action of gravity, the arrangement completes the drainage of roof rainwater to underground water flow, compared with the traditional construction mode of laying ceramic tiles and then carrying out waterproof coiled materials, in the application, the waterproof plates and the pipe fittings of each group are mounted at one time by means of the fastening bolts of each group, the whole construction operation efficiency is high, and the mounting speed is improved;

2. the scraper is positioned inside the pipe fitting, each group of fixed pulleys are arranged inside the pipe fitting and the sewer pipe, the rope is positioned inside the pipe fitting, the rope penetrates through the scraper and is tied and fixed, when more dust is accumulated inside the pipe fitting, a cleaner stands on the ground at the moment, holds the rope between two groups of wall openings, continuously pulls the rope, enables the rope to rotate along each group of fixed pulleys, further realizes the movement of the scraper inside the pipe fitting, scrapes the dust inside the pipe fitting, continuously scrapes the dust inside the pipe fitting along with the movement of the scraper, enables the dust inside the pipe fitting to be continuously scraped and pushed towards the inside of the sewer pipe, and enables the dust to continuously fall along the sewer pipe, thereby realizing the cleaning operation of the dust inside the pipe fitting; the rollers on the two sides of the scraper are inserted into the wall grooves on the two sides of the scraper to slide, so that the friction resistance of the scraper when the scraper moves in the pipe fitting is reduced, a cleaner can hold the rope to pull the scraper conveniently, the labor intensity of pulling the rope is reduced, and the convenience is improved;

3. when the roof gutter is constructed, the base is integrally connected with the cross beam through each group of corner connectors, a foaming agent is sprayed inside a notch of the base, then the outer curled edges on two sides of the pipe fitting are installed with the base, and the base forms a support for the pipe fitting; the filter screen is laid, and the filter screen covers the notch of the pipe fitting, so that branches and leaves are prevented from entering the pipe fitting; the sewer pipe is communicated with the pipe fitting and conveys the water body in the pipe fitting to the ground; when the dust deposits in the pipe fitting, the rope is pulled at the moment, so that the scraper slides along the pipe fitting, and the pipe fitting cleaning operation is performed.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is an exploded view of the present application hiding various groups of waterproof sheets;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is an enlarged view of FIG. 2 at B

FIG. 5 is an exploded view from another angle;

fig. 6 is an enlarged view at C in fig. 5.

Description of reference numerals: 1. a base; 11. corner connectors; 2. a pipe fitting; 21. a fixed pulley; 22. a rope; 23. a wall groove; 24. positioning a plate; 25. a limiting plate; 3. a house; 31. a cross beam; 32. waterproof board material; 33. a sewer pipe; 331. a card holder; 332. a wall opening; 4. fastening a bolt; 5. a foamed layer; 6. a squeegee; 61. a roller; 7. filtering with a screen; 8. a gap.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a roof gutter and a construction method thereof. Referring to fig. 1, a house 3 with a steel structure is installed on the ground, each group of wall surfaces of the house 3 are prefabricated plates, each group of plate is preferably a galvanized plate, and polyurethane foam is clamped inside two layers of galvanized plates. The house 3 is of a pitched roof type, and the roof gutter is positioned at the saddle part of each group of pitched roof type houses 3. The extending direction of the roof gutter is parallel to the beams of the pitched roof roofs on two sides. A plurality of groups of waterproof plates 32 with the same specification are paved on the vamps on the two sides of the roof, and all the groups of waterproof plates 32 are continuously paved.

Referring to fig. 2 and 3, the roof gutter comprises a base 1 and pipe fittings 2 which are prefabricated, and the base 1 and the pipe fittings 2 are of channel steel structures. The house 3 is composed of a plurality of groups of beams 31, and each group of beams 31 are horizontally arranged and integrally welded. The width of the cross beam 31 is larger than that of the base 1, and the base 1 is arranged on saddle parts of two groups of pitched roof roofs; the base 1 is horizontally fixed to a cross member 31 installed on a roof, and the lower end surface of the base 1 abuts against the upper end surface of the cross member 31 at the intermediate position. A plurality of groups of corner connectors 11 are arranged on the vertical end faces of the outer sides of wing plates on two sides of the base 1, the corner connectors 11 are distributed at equal intervals, and the wing plates on two sides of the corner connectors 11 are respectively in screw connection with the base 1 and the cross beam 31.

The distance between the end surfaces of wing plates at the two sides of the pipe fitting 2, which are deviated from each other, is smaller than the width of the socket of the base 1, and the height of the wing plates at the two sides of the pipe fitting 2 is smaller than the depth of the notch of the base 1; a foaming layer 5 is filled between the inner groove surface of the base 1 and the pipe fitting 2. The pipe fitting 2 is inserted into the base 1, the distance between the lower end face of the pipe fitting 2 and the inner bottom face of the base 1 is not smaller than 1cm, and the distance between the outer wall of the pipe fitting 2 and the inner wall of the base 1 is not smaller than 1 cm. The pipe fitting 2 is of an outer curled edge structure, and two curled edges of the pipe fitting 2 are hung on wing plates on two sides of the base 1. The vertical inner walls of two sides of the pipe fitting 2 are respectively convexly provided with a horizontally arranged positioning plate 24, the two groups of positioning plates 24 are positioned at the same horizontal height, a filter screen 7 is inserted in the pipe fitting 2, the width of the filter screen 7 is the same as that of the notch of the pipe fitting 2, the filter screen 7 is laid in the pipe fitting 2, and the edges of two sides of the filter screen 7 are abutted to the positioning plates 24; the upper end surface of the sieve 7 is not higher than the upper end surface of the pipe 2.

Referring to fig. 1 and 3, the lower end of each group of waterproof plates 32 is pressed against the outer flange of the pipe 2, a plurality of groups of fastening bolts 4 penetrating through the pipe 2 and screwed to the flanges of the base 1 are mounted on the lower end of the waterproof plates 32, and the groups of fastening bolts 4 are distributed at equal intervals.

Referring to fig. 2 and 4, the other side of the pipe fitting 2 is communicated with a vertically arranged downcomer 33, a plurality of groups of clamping seats 331 distributed up and down are installed on the wall, the notches of the groups of clamping seats 331 are vertically collinear, and the groups of clamping seats 331 are fixed by means of the groups of expansion screws. One side of each group of pipe fittings 2 is plugged, and one end of the plugging is far away from the downcomer 33, so that water is prevented from flowing out from the end. The two ends of the pipe fitting 2 are rotatably connected with fixed pulleys 21, the shaft body of the fixed pulley 21 close to one end of the downcomer 33 is fixedly inserted into the inner walls of the two sides of the vertical upper end part of the downcomer 33, two groups of fixed pulleys 21 which are distributed up and down are rotatably connected inside the downcomer 33, ropes 22 are laid inside the pipe fitting 2, the ropes 22 and the groups of fixed pulleys 21 are in wound connection and rotation, two groups of wall openings 332 which are distributed up and down are formed in the downcomer 33, and the two groups of fixed pulleys 21 at the lower end part of the downcomer 33 are positioned at the positions of the wall openings 332; the ropes 22 are positioned at the two groups of wall openings 332, and the ropes 22 positioned at the upper and lower groups of wall openings 332 extend from the interior of the downcomer 33 to the exterior and are inserted into the interior of the downcomer 33 again.

Referring to fig. 5 and 6, the scraping plate 6 is installed inside the pipe 2, the scraping plate 6 is vertically arranged, the scraping plate 6 is abutted against the inner wall of the pipe 2, and the lower end of the scraping plate 6 is slidably connected with the inner bottom surface of the pipe 2. The rope 22 penetrates through the scraper 6 and is fixed by tying; the vertical inner wall of pipe fitting 2 both sides all is concave to be equipped with the wall groove 23 that the level set up, and two sets of wall grooves 23 are located same vertical height, and the both sides of scraper blade 6 are rotated and are all connected with gyro wheel 61, and each group's gyro wheel 61 is pegged graft with wall groove 23 and is rotated. The two ends of the pipe fitting 2 are respectively blocked with a vertically arranged limit plate 25, the limit plate 25 far away from one end of the downcomer 33 is fixedly connected with the inner bottom surface of the pipe fitting 2, a gap 8 is formed between the limit plate 25 close to the downcomer 33 and the inner bottom surface of the pipe fitting 2, and the height dimension of the gap 8 is not less than 3cm (refer to fig. 3); the rope 22 penetrates through the limiting plate 25, and the rope 22 and the limiting plate 25 are inserted and slide.

Referring to fig. 3 and 6, a fixed pulley 21 is rotatably connected to the wall body below the cross beam 31 on the side away from the downcomer 33, the rope 22 is wound around the set of fixed pulleys 21 and rotates, and the rope 22 penetrates through the cross beam 31 and extends indoors; the wall board close to the downcomer 33 is rotatably connected with a fixed pulley 21, and a rope 22 extends from the indoor to the outdoor, is connected with the fixed pulley 21 in a winding way and extends towards the interior of the downcomer 33.

The implementation principle of the roof gutter and the construction method thereof in the embodiment of the application is as follows:

a roof gutter is characterized in that before construction, each group of pipe fittings 2 and a base 1 are prefabricated and conveyed to a construction site,

a. constructing the steel structure house 3, laying each group of cross beams 31 on the upper end surface of the house 3, and welding and fixing steel beams;

b. installing a cross beam 31 of the base 1 at the middle position, and fixedly connecting the base 1 and the cross beam 31 by virtue of each group of corner connectors 11; spraying a foaming agent inside the notch of the base 1, and inserting the pipe fitting 2 into the notch of the base 1; mounting each group of clamping seats 331 on a wall body, mounting the sewer pipe 33, mounting each group of clamping seats 331 by means of expansion screws, and clamping the sewer pipe 33 into each group of clamping seats 331;

c. installing each group of fixed pulleys 21, performing winding connection rotation on the rope 22 and each group of fixed pulleys 21, installing the scraper 6 in the pipe fitting 2, inserting and transmitting two groups of rollers 61 and the wall groove 23, and penetrating the rope 22 through the scraper 6 and performing knotting fixation; mounting the limiting plate 25 and the filter screen 7;

d. the waterproof plates 32 on the roofs on the two sides are laid, the lower end parts of the groups of waterproof plates 32 are abutted to the outer curled edges on one side of the pipe fitting 2, the groups of fastening bolts 4 are installed, the fastening bolts 4 vertically penetrate through the waterproof plates 32 and the outer curled edges, and the tapping ends of the fastening bolts 4 are in threaded connection with the vertical wing plates of the base 1.

Inside rainwater on the roofing can flow in pipe fitting 2 along the roofing when the rainfall, the rainwater further constantly flows to downcomer 33 under the effect of gravity, the aforesaid sets up and has accomplished the roofing rainwater to secret rivers drainage, carries out waterproofing membrane's construction mode again for traditional laying the ceramic tile, and each group's waterproof board 32 and pipe fitting 2 have realized an installation with the help of each group's fastening bolt 4 in this application, and holistic construction operating efficiency is higher, has promoted the installation rate.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A roof gutter, its characterized in that: the house is characterized by comprising a base (1) and pipe fittings (2) which are prefabricated, wherein the base (1) and the pipe fittings (2) are of channel steel structures, the house (3) is of a steel structure type, the house (3) is composed of a plurality of groups of cross beams (31), and the base (1) is installed on saddle portions of two groups of pitched roof roofs; the base (1) is horizontally fixed on a cross beam (31) on a roof, the pipe fitting (2) is inserted into the base (1), the pipe fitting (2) is of an outer curled edge structure, and curled edges on two sides of the pipe fitting (2) are hung on wing plates on two sides of the base (1); a plurality of groups of waterproof plates (32) are laid on the inclined planes on the two sides of the roof, the lower end parts of the groups of waterproof plates (32) are tightly pressed with the outer curled edge of the pipe fitting (2), and a plurality of groups of fastening bolts (4) which penetrate through the pipe fitting (2) and are in threaded connection with the wing plate of the base (1) are installed at the lower end parts of the waterproof plates (32); one side of the pipe fitting (2) is plugged, and the other side of the pipe fitting (2) is communicated with a vertically arranged downcomer (33).

2. A roofing gutter as claimed in claim 1, wherein: the distance between the vertical end surfaces of the wing plates on the two sides of the pipe fitting (2) which are deviated from each other is smaller than the width of the notch of the base (1), and the heights of the wing plates on the two sides of the pipe fitting (2) are smaller than the depth of the notch of the base (1); and a foaming layer (5) is filled between the inner groove surface of the base (1) and the pipe fitting (2).

3. A roofing gutter as claimed in claim 2, wherein: a scraper (6) is installed inside the pipe fitting (2), the lower end of the scraper (6) is connected with the inner bottom surface of the pipe fitting (2) in a sliding mode, two ends of the pipe fitting (2) are connected with fixed pulleys (21) in a rotating mode, two groups of fixed pulleys (21) which are distributed up and down are connected inside the sewer pipe (33) in a rotating mode, ropes (22) are laid inside the pipe fitting (2), the ropes (22) and the fixed pulleys (21) of each group rotate in a winding mode, and the ropes (22) penetrate through the scraper (6) and are fixed in a bolting mode; two groups of wall openings (332) which are distributed up and down are formed in the downcomer (33), and the rope (22) extends to the outer wall of the downcomer (33) between the two groups of wall openings (332).

4. A roofing gutter as claimed in claim 3, wherein: the vertical inner wall of pipe fitting (2) both sides all is equipped with wall groove (23) that the level set up concavely, the both sides of scraper blade (6) are rotated and are all connected with gyro wheel (61), each group gyro wheel (61) with wall groove (23) are pegged graft and are rotated.

5. A roofing gutter as claimed in claim 4, wherein: the wall body is fixed with a plurality of groups of clamping seats (331) which are vertically distributed up and down, and the sewer pipe (33) is clamped and fixed with the clamping seats (331).

6. A roofing gutter as claimed in claim 5, wherein: the pipe fitting is characterized in that the two vertical inner walls of the two sides of the pipe fitting (2) are respectively provided with a positioning plate (24) which is horizontally arranged in a protruding mode, a filter screen (7) is inserted into the pipe fitting (2) in an inserting mode, the width of the filter screen (7) is the same as the width of a groove opening of the pipe fitting (2), the filter screen (7) is laid inside the pipe fitting (2), and the edges of the two sides of the filter screen (7) are abutted to the positioning plates (24).

7. A roofing gutter as claimed in claim 6, wherein: a plurality of groups of angle connectors (11) are installed on the vertical end faces of the outer sides of wing plates on the two sides of the base (1), and the wing plates on the two sides of each group of angle connectors (11) are respectively connected with the base (1) and the cross beam (31) through screws.

8. A roofing gutter as claimed in claim 7, wherein: the pipe fitting is characterized in that two ends of the pipe fitting (2) are respectively provided with a vertically arranged limiting plate (25) in a plugging mode, the limiting plate (25) far away from one end of the sewer pipe (33) is fixedly connected with the inner bottom surface of the pipe fitting (2), a gap (8) is formed between the limiting plate (25) close to the sewer pipe (33) and the inner bottom surface of the pipe fitting (2), the rope (22) penetrates through the limiting plate (25), and the rope (22) and the limiting plate (25) are connected in a plugging mode and slide.

9. A roof gutter and a construction method thereof are characterized in that:

a. constructing a steel structure house (3), and paving each group of cross beams (31) on the upper end surface of the house (3);

b. mounting a cross beam (31) of the base (1) at the middle position, and fixedly connecting the base (1) and the cross beam (31) by virtue of each group of corner connectors (11); spraying a foaming agent inside the notch of the base (1), and inserting the pipe (2) into the notch of the base (1); mounting each group of clamping seats (331) on a wall body, and mounting a sewer pipe (33);

c. the fixed pulleys (21) of each group are installed, the rope (22) and the fixed pulleys (21) of each group are wound and connected to rotate, the scraping plate (6) is installed inside the pipe fitting (2), the two groups of rollers (61) and the wall groove (23) are in inserted connection transmission, and the rope (22) penetrates through the scraping plate (6) and is knotted and fixed; mounting the limiting plate (25) and the filter screen (7);

d. the waterproof plates (32) on the roofs on the two sides are laid, the lower end portions of the groups of waterproof plates (32) are abutted to the outer curled edges on one side of the pipe fitting (2), the groups of fastening bolts (4) are mounted, the fastening bolts (4) vertically penetrate through the waterproof plates (32) and the outer curled edges, and the tapping ends of the fastening bolts (4) are in threaded connection with the vertical wing plates of the base (1).