Combined concrete pouring system and method for wind turbine foundation

Abstract

The present invention belongs to the technical field of wind power generation, and specifically discloses a combined concrete pouring system and method for a wind turbine foundation. A combined concrete pouring system for a wind turbine foundation, comprising a sky pump pouring system and a chute pouring system, wherein the discharge ports of the sky pump pouring system and the chute pouring system are respectively directed to the wind turbine foundation template to be poured; a combined concrete pouring method for a wind turbine foundation: concrete is poured to the outside and center of the wind turbine foundation template through a sky pump by a second concrete mixer truck; at the same time, concrete is poured to the inside of the wind turbine foundation template through a belt conveyor and a chute by a first concrete mixer truck. The present invention can realize continuous pouring of large-volume concrete for the wind turbine foundation; the double sets of pouring systems are mutually standby, reducing the quality risks that may be faced in pouring the wind turbine foundation; compared with pouring by a single system, the pouring time is saved by more than 40%.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation, and in particular relates to a combined concrete pouring system and method for a wind turbine foundation. Background Art

[0002] As a major form of clean energy, wind power generation has developed rapidly in recent years. The foundation of a wind turbine plays a supporting and fixing role, which is crucial for the safe and stable operation of the wind turbine. Concrete pouring of the wind turbine foundation is a key process in its construction. In order to ensure the strength of the wind turbine foundation, large-volume concrete pouring requires one-time continuous pouring, and the continuous pouring time generally does not exceed 18 hours. At present, conventional concrete pouring schemes generally use sky pump pouring or chute pouring. A single pouring method takes a long time and there is a risk of affecting construction quality. Summary of the invention

[0003] The invention discloses a combined concrete pouring system and method for a wind turbine foundation, so as to solve the technical problem that a single method for long-term pouring leads to poor construction quality of the wind turbine foundation and low working efficiency.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A combined concrete pouring system for a wind turbine foundation comprises a sky pump pouring system and a chute pouring system, wherein the discharge ports of the sky pump pouring system and the chute pouring system are directed to a wind turbine foundation formwork to be poured; the chute pouring system comprises a first concrete mixer truck, wherein the discharge port of the first concrete mixer truck is connected to a feed port of a belt conveyor, a belt conveyor bracket is provided between the belt conveyor and the wind turbine foundation formwork, a chute is provided below the belt conveyor discharge port, and a chute bracket is provided between the vertically high end of the chute and the wind turbine foundation formwork; the sky pump pouring system comprises a second concrete mixer truck, wherein the discharge port of the second concrete mixer truck is connected to a feed port of the sky pump, and the discharge port of the sky pump is directed to the wind turbine foundation formwork.

[0006] The further improvement of the present invention is that: the chute comprises a chute fixing frame, chute plates and rollers, the chute fixing frame is arranged obliquely; rollers are arranged on both sides of the chute fixing frame; and a plurality of chute plates are movably installed on the chute fixing frame.

[0007] A further improvement of the present invention is that the angle between the belt conveyor and the horizontal plane is greater than 20° and less than 60°.

[0008] A further improvement of the present invention is that the belt width of the belt conveyor is 650mm-800mm, and the output is greater than 5 tons / hour.

[0009] A further improvement of the present invention is that the cross section of the chute is U-shaped or rectangular, the width is 650mm-800mm, and the angle between the chute and the horizontal plane is greater than 30° and less than 90°.

[0010] A further improvement of the present invention is that the chute bottom is hinged to the chute bracket.

[0011] A further improvement of the present invention is that the vertical height of the boom of the sky pump is greater than 37m.

[0012] A further improvement of the present invention is that the chute is assembled in sections, each section is 500mm-800mm long, and two adjacent sections of the chute are overlapped and fixed in a buckle form.

[0013] A further improvement of the present invention is that a plurality of positioning holes are arranged on both sides of the chute fixing frame, and both side edges of each section of the chute sheet are fixed by inserting pins into the positioning holes.

[0014] A combined concrete pouring method for a wind turbine foundation comprises the following steps:

[0015] First, the second concrete mixer truck pours concrete onto the outside of the wind turbine foundation formwork through a sky pump;

[0016] Secondly, the first concrete mixer truck delivers the concrete to the belt conveyor, which then delivers the concrete to the chute, which guides the concrete to be poured on the inside of the wind turbine foundation formwork;

[0017] Finally, the second concrete mixer truck pours concrete into the center of the wind turbine foundation formwork through a sky pump.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The invention discloses a combined concrete pouring system for a wind turbine foundation, which simultaneously adopts sky pump pouring and chute pouring to realize continuous pouring of large-volume concrete for the wind turbine foundation.

[0020] The invention provides a combined concrete pouring system for a wind turbine foundation, wherein a sky pump pouring system and a chute pouring system serve as backup for each other, thereby reducing the quality risk encountered during the pouring process of the wind turbine foundation.

[0021] The invention discloses a combined concrete pouring method for a wind turbine foundation. During the pouring process, two methods, namely, sky pump pouring and chute pouring, are used. Compared with pouring by a single system, the pouring time is saved by more than 40%. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of a combined concrete pouring system for a wind turbine foundation according to the present invention;

[0024] Figure 2 A schematic diagram of a chute structure of a combined concrete pouring system for a wind turbine foundation according to the present invention;

[0025] Figure 3 It is a structural schematic diagram of a chute support of a combined concrete pouring system for a wind turbine foundation according to the present invention;

[0026] Figure 4 The present invention is a schematic diagram of a fixing method of a chute plate in a combined concrete pouring system for a wind turbine foundation.

[0027] In the figure: 1. The first concrete mixer truck; 2. Belt conveyor; 3. Belt conveyor bracket; 4. Chute; 41. Chute fixing frame; 42. Chute plate; 43. Roller; 44. Dropping port; 45. Chute bracket connection point; 5. Chute bracket; 6. Sky pump; 7. Wind turbine foundation template; 8. Foundation slope; 9. Foundation external platform; 10. The second concrete mixer truck. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0029] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0030] like Figure 1As shown, a combined concrete pouring system for a wind turbine foundation of the present invention comprises a sky pump pouring system and a chute pouring system, wherein the discharge ports of the sky pump pouring system and the chute pouring system are respectively directed to the wind turbine foundation formwork 7 to be poured; the chute pouring system comprises a first concrete mixer truck 1, wherein the discharge port of the first concrete mixer truck 1 is connected to the feed port of a belt conveyor 2, a belt conveyor bracket 3 is provided between the belt conveyor 2 and the wind turbine foundation formwork 7, a chute 4 is provided below the discharge port of the belt conveyor 2, a chute bracket 5 is provided between one end of the chute 4 with a high vertical height and the wind turbine foundation formwork 7, and the other end serves as a discharge port; the sky pump pouring system comprises a second concrete mixer truck 10, wherein the discharge port of the second concrete mixer truck 10 is connected to the feed port of a sky pump 6, and the discharge port of the sky pump 6 is aligned with the wind turbine foundation formwork 7.

[0031] An outer foundation platform 9 is provided below the first concrete mixer truck 1 and the second concrete mixer truck 10 . The outer foundation platform 9 is higher than the bottom surface of the wind turbine foundation template 7 . An inclined foundation slope 8 is provided between the outer foundation platform 9 and the wind turbine foundation template 7 .

[0032] like Figure 2 As shown, the chute 4 is composed of a chute fixing frame 41, a chute sheet 42, a roller 43, a material drop opening 44 and a chute support connection point 45. The chute fixing frame 41 is arranged obliquely, and chute sheets 42 are arranged between the chute fixing frames 41. Rollers 43 are arranged on both sides of the long sides of the chute fixing frames 41. The chute sheet 42 arranged on the upper surface of the chute fixing frame 41 is provided with a material drop opening 44, and the chute sheet 42 with the highest vertical height on the bottom surface of the chute 4 is provided with a chute support connection point 45.

[0033] Both the sky pump casting system and the chute casting system can be adjusted to achieve concrete casting within the range of the wind turbine foundation template 7.

[0034] The vertical height of the boom of the sky pump 6 is greater than 37m, and concrete pouring within the range of the wind turbine foundation template 7 is achieved by adjusting the boom and the material distribution pipe at its front end.

[0035] The angle between the belt conveyor 2 and the horizontal plane is greater than 20° and less than 60°.

[0036] like Figure 3 As shown, the chute support 3 is a vertical rod with a round table surface at the bottom, and at least three support rods are evenly arranged below the round table.

[0037] The belt width of the belt conveyor 2 is 650mm-800mm, and the output is greater than 5 tons / hour.

[0038] The cross section of the chute 4 is U-shaped or rectangular, and its width is 650mm-800mm. It is fixed on the wind turbine foundation template 7 through the chute bracket 5. The angle between the chute 4 and the horizontal plane is greater than 30° and less than 90°, and the concrete slides down without power by its own weight.

[0039] A chute bracket connection point is provided at the bottom of the chute 4, and the chute bracket connection point is hinged to the chute bracket 5. Specifically, a boss with a spherical groove is welded at the bottom of the chute 4, which engages with the spherical protrusion structure on the top of the chute bracket 5, so that it can move in a circular direction around the bracket connection point.

[0040] Cylindrical rollers 43 are installed on both sides of the chute 4. The rollers 43 are in contact with the upper edge of the base template to facilitate the circumferential movement of the chute 4.

[0041] The chute 4 is assembled in sections, each section having a length of 500 mm to 800 mm. Any section can be removed to serve as a material discharge port 44 according to the casting area.

[0042] like Figure 4 As shown, two adjacent sections of chute sheets 42 overlap each other, with the upper section overlapping the lower section and fixed in a buckle manner.

[0043] Each section of the chute sheet 42 is covered on the fixing frames on both sides of the chute 4 .

[0044] A plurality of positioning holes are arranged on the fixing frames on both sides of the chute 4, and both sides of each chute piece 42 are fixed by inserting pins into the positioning holes.

[0045] The wind turbine foundation template 7 is divided into three layers, which are the center, the inner side and the outer side from the inside to the outside.

[0046] A combined concrete pouring method for a wind turbine foundation comprises the following steps:

[0047] First, the second concrete mixer truck 10 pours concrete onto the outside of the wind turbine foundation template 7 through the sky pump 6;

[0048] Secondly, the first concrete mixer truck 1 delivers the concrete to the belt conveyor 2, and the belt conveyor 2 delivers the concrete to the chute 4, and the chute 4 guides the concrete to be poured on the inner side of the wind turbine foundation template 7;

[0049] Finally, the second concrete mixer truck 10 pours concrete into the center of the wind turbine foundation template 7 through the sky pump 6 .

[0050] The sky pump 6 can cast any position of the wind turbine foundation template 7;

[0051] The chute 4 can cast the inner side and the outer side of the wind turbine foundation template 7, preferably the inner side of the wind turbine foundation template 7.

[0052] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A combined concrete pouring system for a wind turbine foundation, characterized in that: It comprises a sky pump casting system and a chute casting system, wherein the discharge ports of the sky pump casting system and the chute casting system are directed toward a wind turbine foundation template (7) to be cast; the chute casting system comprises a first concrete mixer truck (1), wherein the discharge port of the first concrete mixer truck (1) is connected to the feed port of a belt conveyor (2), a belt conveyor bracket (3) is provided between the belt conveyor (2) and the wind turbine foundation template (7), a chute (4) is provided below the discharge port of the belt conveyor (2), and a chute bracket (5) is provided between the end of the chute (4) with a higher vertical height and the wind turbine foundation template (7); the sky pump casting system comprises a second concrete mixer truck (10) and a sky pump (6), wherein the discharge port of the second concrete mixer truck (10) is connected to the feed port of the sky pump (6), and the discharge port of the sky pump (6) is directed toward the wind turbine foundation template (7); The chute (4) comprises a chute fixing frame (41), a chute sheet (42) and a roller (43); the chute fixing frame (41) is arranged obliquely; rollers (43) are arranged on both sides of the chute fixing frame (41); a plurality of chute sheets (42) are movably installed on the chute fixing frame (41); The angle between the belt conveyor (2) and the horizontal plane is greater than 20° and less than 60°; The cross section of the chute (4) is U-shaped or rectangular; The bottom of the chute (4) is hinged to the chute bracket (5); The chute (4) is assembled in sections, each section is 500mm-800mm long, and two adjacent sections of chute plates (42) are overlapped and fixed in a buckle form; A plurality of positioning holes are arranged on both sides of the chute fixing frame (41), and both side edges of each section of the chute sheet (42) are fixed by inserting pins into the positioning holes.

2. A combined concrete pouring system for a wind turbine foundation according to claim 1, characterized in that: The vertical height of the boom of the sky pump is greater than 37m.

3. The combined concrete pouring system for a wind turbine foundation according to claim 1, characterized in that: The belt width of the belt conveyor (2) is 650 mm-800 mm, and the output is greater than 5 tons / hour.

4. The combined concrete pouring system for a wind turbine foundation according to claim 1, characterized in that: The width of the chute (4) is 650 mm-800 mm, and the angle between the chute (4) and the horizontal plane is greater than 30° and less than 90°.

5. A combined concrete pouring method for a wind turbine foundation, characterized in that: A combined concrete pouring system for a wind turbine foundation according to any one of claims 1 to 4 comprises the following steps: First, the second concrete mixer truck (10) pours concrete onto the outer side of the wind turbine foundation template (7) through the sky pump (6); Secondly, the first concrete mixer truck (1) transports the concrete to the belt conveyor (2), and the belt conveyor (2) then transports the concrete to the chute (4), and the chute (4) guides the concrete to be poured on the inner side of the wind turbine foundation template (7); Finally, the second concrete mixer truck (10) pours concrete into the center of the wind turbine foundation template (7) through the sky pump (6).

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