Adjustable foundation used under wind power generation tower

Abstract

The utility model discloses an adjustable foundation used under a wind power generation tower, which belongs to the technical field of wind power generation and comprises a foundation pile and a raft foundation. The device further comprises a bearing platform, a settlement monitoring supporting assembly and a grouting body. The top of each foundation pile is fixedly connected with a bearing platform; a gap for mounting a plurality of groups of settlement monitoring support assemblies is reserved between the top of the bearing platform and the circumferential bottom of the outer side of the raft foundation; in the initial state, the upper end and the lower end of the settlement monitoring supporting assembly are connected with the raft foundation and the bearing platforms correspondingly, and the outer side of the bottom of the middle of the raft foundation is arranged on the tops of the bearing platforms in a lap joint mode. By means of the mode, the foundation deformation problem of a wind power generation tower structure on a goaf, a mine waste high fill and other sites is solved through foundation deformation adjustment, and the safety of a wind power generation tower on the type of sites and the normal operation state of a generator set are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation technical field, concretely relates to a adjustable foundation for under wind power generation tower. BACKGROUND

[0002] Wind energy is a kind of clean renewable energy, with the rapid development of onshore wind power generation, wind turbine installation needs a large amount of land, since land is non-renewable resource, better choice is in goaf, mine waste high fill etc.

[0003] However, the foundation deformation of goaf, mine waste high fill etc. is unstable, the foundation built on it is prone to deformation, such as deformation exceeds the deformation control requirement of wind power generation tower foundation, will lead to generator set operation exception, even appears structure overturning etc. Accident.

[0004] Based on this, the utility model discloses a adjustable foundation for under wind power generation tower to solve above-mentioned problem. UTILITY MODEL CONTENTS

[0005] In view of the above-mentioned shortcomings of prior art, the utility model provides a adjustable foundation for under wind power generation tower.

[0006] To realize above-mentioned purpose, the utility model is realized by following technical scheme:

[0007] A adjustable foundation for under wind power generation tower, including foundation pile and raft foundation;

[0008] Still including bearing platform, settlement monitoring support subassembly and grouting body;

[0009] The top of the foundation pile is fixedly connected with the bearing platform;

[0010] The top of the bearing platform and the circumferential bottom outside the raft foundation are reserved with the gap for installing several groups of settlement monitoring support subassembly;

[0011] In initial state, the outside of the bottom of the middle part of raft foundation is placed on the top of several bearing platforms;

[0012] When the subsidence of foundation pile is less than preset value, settlement monitoring support subassembly is not installed;

[0013] When the subsidence of foundation pile is greater than or equal to preset value, settlement monitoring support subassembly is installed, and the upper end and lower end of settlement monitoring support subassembly are connected with raft foundation and bearing platform respectively;

[0014] When the subsidence of foundation pile reaches threshold value, grouting body is fixedly connected at the bottom of raft foundation, and the thickness of grouting body gradually decreases from one end close to the subsided foundation pile to one end away from the subsided foundation pile;

[0015] The thickness of the grouting body near the end of the sunken foundation pile is equal to the height of the gap between the outer side of the bottom of the middle part of the raft foundation and the pile cap.

[0016] Further, the settlement monitoring support assemblies, the foundation piles, and the pile caps are uniformly distributed in a circle.

[0017] Further, the centers of the circles where the settlement monitoring support assemblies, the foundation piles, and the pile caps are located coincide.

[0018] Further, the pile cap has a rectangular cross section.

[0019] Further, the upper part of the raft foundation has a circular cross section.

[0020] Further, the middle part of the raft foundation is thick, and the outer side of the circle is thin.

[0021] Further, the settlement monitoring support assembly comprises a jack, a contact plate, a straight hole, a pressure sensor, a first control valve, a first pipeline, a second pipeline, a second control valve, a hydraulic oil tank, a third pipeline, an oil pump, a fourth pipeline, a two-position four-way electromagnetic valve, a fifth pipeline, a sixth pipeline, and a control host; the first pipeline and the second pipeline are fixedly connected to the jack; the first control valve and the second control valve are fixedly installed on the first pipeline and the second pipeline, respectively; the top of the jack is fixedly connected to the contact plate; the top of the contact plate is provided with a straight hole for embedding and fixedly installing the pressure sensor; the fourth pipeline and the third pipeline are fixedly connected to the hydraulic oil tank; the oil pump is fixedly installed on the third pipeline; one end of each of the fourth pipeline, the third pipeline, the fifth pipeline, and the sixth pipeline is connected to the two-position four-way electromagnetic valve; the fifth pipeline and the sixth pipeline are fixedly connected to and communicate with the first pipeline and the second pipeline of each group of jacks.

[0022] Further, the first control valve, the second control valve, the oil pump, the pressure sensor, and the two-position four-way electromagnetic valve are electrically connected to the control host.

[0023] Further, when the jack drives the contact plate to descend, the flow direction of the oil is: oil inlet: the hydraulic oil tank, the third pipeline, the oil pump, the two-position four-way electromagnetic valve, the fifth pipeline, the first pipeline, and the jack; oil return: the jack, the second pipeline, the sixth pipeline, the two-position four-way electromagnetic valve, the fourth pipeline, and the hydraulic oil tank.

[0024] Further, when the jack drives the contact plate to ascend, the flow direction of the oil is: oil inlet: the hydraulic oil tank, the third pipeline, the oil pump, the two-position four-way electromagnetic valve, the sixth pipeline, the second pipeline, and the jack; oil return: the jack, the first pipeline, the fifth pipeline, the two-position four-way electromagnetic valve, the fourth pipeline, and the hydraulic oil tank.

[0025] Beneficial effects

[0026] The utility model aims at through basic deformation adjustment, solves the basic deformation problem of wind power generation tower structure on goaf, mine waste high fill etc.

[0027] The utility model initial state, initial state, the upper and lower ends of the settlement monitoring support subassembly are connected with raft foundation and bearing platform respectively, and the outside of the bottom of the middle part of raft foundation is arranged on the top of the plurality of bearing platforms; when the subsidence of the foundation pile is less than the preset value, the settlement monitoring support subassembly of the upper part of the subsidence position of the foundation pile is started to stretch, so as to play the continuous righting support effect on raft foundation; when the subsidence of the foundation pile is greater than or equal to the preset value, the bottom of raft foundation is fixedly connected with the grouting body, one end of the grouting body close to the subsided foundation pile is thick, and the other end far from the subsided foundation pile is thin, the thickness of the one end of the grouting body close to the subsided foundation pile is equal to the height of the gap between the outside of the bottom of the middle part of raft foundation and the bearing platform; when the wind power generation tower inclines, the uneven deformation of the foundation can be adjusted by adjusting the settlement monitoring support subassembly, so as to play the righting support effect; after righting in place, the grouting body can be formed on the bottom of raft foundation, so as to play the righting purpose. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0029] Figure 1 It is a structure schematic view top view of adjustable foundation under wind power generation tower of the utility model;

[0030] Figure 2 It is A-A section view before rectification; Figure 1

[0031] Figure 3 It is A-A section view after rectification; Figure 1

[0032] Figure 4 It is B-B section view; Figure 1

[0033] Figure 5 It is jack and its connecting structure section view;

[0034] Figure 6 It is the top view of settlement monitoring support subassembly;

[0035] Figure 7 ​​​Fig. 1 is a schematic diagram of a lowering control of a settlement monitoring support assembly;

[0036] Figure 8 Fig. 2 is a schematic diagram of a rising control of the settlement monitoring support assembly.

[0037] The reference signs in the figures respectively represent:

[0038] 1, foundation pile; 2, bearing platform; 3, raft foundation; 4, settlement monitoring support assembly; 41, jack; 42, contact plate; 43, straight hole; 44, pressure sensor; 45, first control valve; 46, first pipeline; 47, second pipeline; 48, second control valve; 49, hydraulic oil tank; 410, third pipeline; 411, oil pump; 412, fourth pipeline; 413, two-position four-way electromagnetic valve; 414, fifth pipeline; 415, sixth pipeline; 416, control host; 5, grouting body. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] The present application will be further described below in combination with the embodiments.

[0041] Embodiment 1

[0042] Please refer to the drawings in the description Figures 1-8 An adjustable foundation for a wind power generation tower, comprising a plurality of groups of foundation piles 1 and a group of raft foundations 3;

[0043] Further comprising bearing platforms 2, settlement monitoring support assemblies 4 and grouting bodies 5;

[0044] The top of each of the foundation piles 1 is fixedly connected with a bearing platform 2;

[0045] The top of the bearing platform 2 and the circumferential bottom of the outer side of the raft foundation 3 are reserved with a gap for installing a plurality of groups of settlement monitoring support assemblies 4;

[0046] In the initial state, the outer side of the bottom of the middle part of the raft foundation 3 is placed on the top of a plurality of bearing platforms 2;

[0047] When the amount of subsidence of the pile (1) is less than the preset value, the settlement monitoring support assembly 4 is not installed, and when the amount of subsidence of the pile (1) is greater than the preset value, the settlement monitoring support assembly 4 is installed and the foundation is corrected through the settlement monitoring support assembly 4; the upper and lower ends of the settlement monitoring support assembly 4 are connected with the raft foundation 3 and the pile cap 2, respectively;

[0048] When the amount of subsidence of the pile 1 is greater than or equal to the preset value, the settlement monitoring support assembly 4 at the upper part of the subsidence site of the pile 1 is started to extend, so as to play a continuous correction support role on the raft foundation 3;

[0049] When the amount of subsidence of the pile 1 is large (for example, reaches the maximum threshold d), the bottom of the raft foundation 3 is fixedly connected with a grouting body 5, one end of the grouting body 5 close to the subsided pile 1 is thick, and the other end away from the subsided pile 1 is thin, and the thickness of the one end of the grouting body 5 close to the subsided pile 1 is equal to the height of the gap between the outside of the bottom of the middle part of the raft foundation 3 and the pile cap 2;

[0050] Preferably, the settlement monitoring support assembly 4, the pile 1, and the pile cap 2 are uniformly distributed in a circle, and the centers of the circles where the settlement monitoring support assembly 4, the pile 1, and the pile cap 2 are located coincide;

[0051] Preferably, the cross section of the pile cap 2 is rectangular;

[0052] Preferably, the cross section of the upper part of the raft foundation 3 is circular;

[0053] Preferably, the middle part of the raft foundation 3 is thick, and the outer part of the circumference of the raft foundation 3 is thin; the raft foundation 3 is provided with a space for placing the settlement monitoring support assembly 4 at the upper part of the center of the pile cap 2, so that the thickness of the middle part of the raft foundation 3 is greater than that of the edge part;

[0054] When the wind power tower is inclined, the uneven deformation of the foundation can be adjusted by adjusting the settlement monitoring support assembly 4, so as to play a correction support role; after correction, the grouting body 5 is formed and fixed at the bottom of the raft foundation 3, and the forming mode is realized by using the prior art, so as to play a correction and righting role.

[0055] Embodiment 2

[0056] Please refer to the drawings in the specification Figures 1-8, the settlement monitoring support assembly 4 comprises a jack 41, a contact plate 42, a straight hole 43, a pressure sensor 44, a first control valve 45, a first pipeline 46, a second pipeline 47, a second control valve 48, a hydraulic oil tank 49, a third pipeline 410, an oil pump 411, a fourth pipeline 412, a two-position four-way electromagnetic valve 413, a fifth pipeline 414, a sixth pipeline 415 and a control host 416; the first pipeline 46 and the second pipeline 47 are fixedly connected to the jack 41, the first control valve 45 and the second control valve 48 are fixedly installed on the first pipeline 46 and the second pipeline 47 respectively, the top of the jack 41 is fixedly connected with the contact plate 42, and the top of the contact plate 42 is provided with the straight hole 43 for embedding and fixedly installing the pressure sensor 44;

[0057] The first control valve 45, the second control valve 48, the oil pump 411, the pressure sensor 44 and the two-position four-way electromagnetic valve 413 are electrically connected with the control host 416;

[0058] The pressure sensor 44 is in contact with the raft foundation 3 and is used for detecting the pressure value between the pressure sensor 44 and the raft foundation 3; when the pressure value decreases, it indicates that the pile 1 sinks at this position, the control host 416 controls the first control valve 45 and the second control valve 48 at the corresponding position to open according to the pressure reduction value, and simultaneously the oil pump 411 and the two-position four-way electromagnetic valve 413 are opened, the oil enters the jack 41 to realize the starting of the jack 41, and the contact plate 42 is driven to move upwards and contact with the raft foundation 3 until the pressure sensor 44 restores to the normal pressure value;

[0059] Specifically, when the jack 41 drives the contact plate 42 to descend, the flow direction of the oil is: oil inlet: the hydraulic oil tank 49, the third pipeline 410, the oil pump 411, the two-position four-way electromagnetic valve 413, the fifth pipeline 414, the first pipeline 46 and the jack 41; oil return: the jack 41, the second pipeline 47, the sixth pipeline 415, the two-position four-way electromagnetic valve 413, the fourth pipeline 412 and the hydraulic oil tank 49;

[0060] When the jack 41 drives the contact plate 42 to ascend, the flow direction of the oil is: oil inlet: the hydraulic oil tank 49, the third pipeline 410, the oil pump 411, the two-position four-way electromagnetic valve 413, the sixth pipeline 415, the second pipeline 47 and the jack 41; oil return: the jack 41, the first pipeline 46, the fifth pipeline 414, the two-position four-way electromagnetic valve 413, the fourth pipeline 412 and the hydraulic oil tank 49.

[0061] The above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some of the technical features. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An adjustable foundation for wind power generation tower, comprising piles (1) and raft foundation (3), characterized in that: It also comprises bearing platform (2), settlement monitoring support assembly (4) and grouting body (5); The top of the pile (1) is fixedly connected with the bearing platform (2); The top of the bearing platform (2) and the outer side of the circular bottom of the raft foundation (3) are reserved for installing several groups of settlement monitoring support assemblies (4); In the initial state, the outer side of the bottom of the middle part of the raft foundation (3) is placed on the top of several bearing platforms (2); When the settlement of the pile (1) is less than the preset value, the settlement monitoring support assembly (4) is not installed; When the settlement of the pile (1) is greater than or equal to the preset value, the settlement monitoring support assembly is installed, and the upper and lower ends of the settlement monitoring support assembly (4) are connected with the raft foundation (3) and the bearing platform (2) respectively; When the settlement of the pile (1) reaches the threshold value, the grouting body (5) is fixedly connected at the bottom of the raft foundation (3), and the thickness of the grouting body (5) gradually decreases from one end close to the sinking pile (1) to the other end away from the sinking pile (1); The thickness of the grouting body (5) close to the sinking pile (1) is equal to the height of the gap between the outer side of the bottom of the middle part of the raft foundation (3) and the bearing platform (2).

2. The adjustable foundation for wind power towers according to claim 1, characterized in that, Several groups of settlement monitoring support assemblies (4), piles (1) and bearing platforms (2) are uniformly distributed in a circle.

3. The adjustable foundation for wind power towers according to claim 2, wherein, The centers of the circles where the settlement monitoring support assemblies (4), piles (1) and bearing platforms (2) are located coincide.

4. The adjustable foundation for wind power towers according to claim 3, wherein, The cross section of the bearing platform (2) is rectangular.

5. The adjustable foundation for wind power towers according to claim 4, wherein, The cross section of the upper part of the raft foundation (3) is circular.

6. The adjustable foundation for wind power towers according to claim 5, wherein, The middle part of the raft foundation (3) is thick, and the outer side of the circle is thin.

7. The adjustable foundation for wind power towers below ground according to claim 6, characterized in that, The settlement monitoring support assembly (4) comprises a jack (41), a contact plate (42), a straight hole (43), a pressure sensor (44), a first control valve (45), a first pipeline (46), a second pipeline (47), a second control valve (48), a hydraulic oil tank (49), a third pipeline (410), an oil pump (411), a fourth pipeline (412), a two-position four-way electromagnetic valve (413), a fifth pipeline (414), a sixth pipeline (415) and a control host (416); the first pipeline (46) and the second pipeline (47) are fixedly connected to the jack (41), the first control valve (45) and the second control valve (48) are fixedly installed on the first pipeline (46) and the second pipeline (47) respectively, the top of the jack (41) is fixedly connected with the contact plate (42), and the straight hole (43) for embedding and fixedly installing the pressure sensor (44) is formed in the top of the contact plate (42); the fourth pipeline (412) and the third pipeline (410) are fixedly connected to the hydraulic oil tank (49), the oil pump (411) is fixedly installed on the third pipeline (410), one end of each of the fourth pipeline (412), the third pipeline (410), the fifth pipeline (414) and the sixth pipeline (415) is connected with the two-position four-way electromagnetic valve (413); the fifth pipeline (414) and the sixth pipeline (415) are fixedly connected with and communicated with the first pipeline (46) and the second pipeline (47) on each group of jacks (41) respectively.

8. The adjustable foundation for wind power towers below ground level according to claim 7, characterized in that, The first control valve (45), the second control valve (48), the oil pump (411), the pressure sensor (44) and the two-position four-way electromagnetic valve (413) are electrically connected with the control host (416).

9. The adjustable foundation for wind power towers below ground according to claim 8, characterized in that, When the jack (41) drives the contact plate (42) to descend, the flow direction of the oil is: oil inlet: the hydraulic oil tank (49), the third pipeline (410), the oil pump (411), the two-position four-way electromagnetic valve (413), the fifth pipeline (414), the first pipeline (46) and the jack (41); oil return: the jack (41), the second pipeline (47), the sixth pipeline (415), the two-position four-way electromagnetic valve (413), the fourth pipeline (412) and the hydraulic oil tank (49).

10. The adjustable foundation for wind power towers below ground according to claim 9, characterized in that, When the jack (41) drives the contact plate (42) to ascend, the flow direction of the oil is: oil inlet: the hydraulic oil tank (49), the third pipeline (410), the oil pump (411), the two-position four-way electromagnetic valve (413), the sixth pipeline (415), the second pipeline (47) and the jack (41); oil return: the jack (41), the first pipeline (46), the fifth pipeline (414), the two-position four-way electromagnetic valve (413), the fourth pipeline (412) and the hydraulic oil tank (49).

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