Fan foundation of split mounting type pouring formwork

Abstract

The utility model discloses a fan foundation of a split mounting type pouring formwork, which comprises a fan foundation body and a grouting reinforcing part arranged at the top of the fan foundation body, the grouting reinforcing part is of an annular structure and is fixed through a plurality of anchoring rods, and the fan foundation further comprises an inner formwork and an outer formwork which are respectively arranged on the inner side and the outer side of the grouting reinforcing part. The inner template and the outer template are annular templates, the tops of the inner template and the outer template are inclined towards the grouting reinforcing part so as to form a semi-closed cavity for accommodating the grouting reinforcing part with the top surface of the fan foundation body, and the grouting reinforcing part is formed by grouting into the semi-closed cavity; the formwork further comprises at least two sets of reinforcing assemblies for supporting the inner formwork body and the outer formwork body respectively. According to the utility model, the risk that the shoulder strap falls off due to load does not exist at the top of the grouting reinforcing part which is finally formed by pouring, and the shape of the grouting reinforcing part is more beneficial to the transmission of the internal force load of the fan foundation, so that the safety of the fan can be enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of fan construction assistance, in particular to a fan foundation of an assembled casting template. Background Art

[0002] With the rapid development of the wind power industry, the height of wind turbine towers is constantly being refreshed, and the weight of wind turbines and towers is also increasing. As the key part of transmitting wind turbine load to the foundation, the strength of the wind turbine foundation directly affects the stability and reliability of the wind turbine. In order to make the wind turbine foundation have better bearing capacity for the wind turbine, it is necessary to perform secondary grouting on the connection between the wind turbine foundation and the tower to form a grouting reinforcement part to improve the strength of the connection.

[0003] At present, the construction of the grouting reinforcement part usually adopts the method of setting up templates for grouting, and the grouting templates mostly adopt a vertical structure. The grouting reinforcement part obtained by grouting is a right-angle structure. The shoulder straps of the grouting reinforcement part on the fan foundation are easily detached after being loaded, resulting in an incomplete overall structure of the grouting reinforcement part, and affecting the transfer of the upper load to the lower part, which in turn affects the safety of the fan. In addition, the grouting templates currently used are mostly customized according to the size of the fan foundation. The overall weight is heavy and inconvenient to transport. Not only is the cost high, but the reusability is low. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fan foundation of an assembled casting template which can effectively prevent the shoulder belt from falling off and improve the load transfer effect.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a fan foundation with an assembled casting formwork, including a fan foundation body and a grouting reinforcement part arranged on the top of the fan foundation body, the grouting reinforcement part is an annular structure and is fixed by multiple anchor rods, and also includes an inner formwork and an outer formwork respectively arranged on the inner and outer sides of the grouting reinforcement part, the inner formwork and the outer formwork are both annular formworks, and the tops of the inner formwork and the outer formwork are inclined toward the grouting reinforcement part to form a semi-enclosed cavity with the top surface of the fan foundation body to accommodate the grouting reinforcement part, and the grouting reinforcement part is formed by grouting into the semi-enclosed cavity; it also includes at least two groups of reinforcement components that support the inner formwork and the outer formwork respectively. The utility model adopts an inner template and an outer template to form a casting template on the top of the fan foundation body. The inner template and the outer template cooperate with the top surface of the fan foundation body to form a casting cavity for the grouting material, and the inner template and the outer template are set as inclined templates. The longitudinal section of the grouting reinforcement part finally cast and formed presents a trapezoidal shape with a small top and a large bottom. There is no risk of the shoulder strap falling off due to load on the top of the grouting reinforcement part. At the same time, the shape of the grouting reinforcement part is more conducive to the transmission of the internal force load of the fan foundation, thereby enhancing the safety of the fan. In addition, the utility model also supports and reinforces the inner template and the outer template by adding a reinforcement component, thereby further improving the overall strength and stability of the grouting reinforcement part.

[0006] As an improvement of the above solution: the height of the inner template and the outer template are both greater than the height of the grouting reinforcement part. The utility model limits the height of the inner template and the outer template so that the height of the casting template is higher than the height of the grouting reinforcement part, which can provide sufficient space for safety and overflow prevention during grouting.

[0007] As an improvement of the above scheme: the reinforcement component includes a counterweight block and a mounting groove, the counterweight block is arranged in the mounting groove; the mounting groove is arranged against the inner template or the outer template, and the side of the mounting groove connecting the inner template or the outer template is a first inclined surface, and the first inclined surface is detachably connected to the inner template or the outer template. The reinforcement component used in the utility model provides sufficient pressure through the counterweight block, and the mounting groove for installing the counterweight block provides support on the side of the inner template or the outer template, which can effectively improve the stability of the casting template.

[0008] As an improvement of the above scheme: the side of the installation groove away from the inner template or the outer template is a second inclined surface, and the longitudinal section of the installation groove is an isosceles trapezoid with a larger upper part and a smaller lower part; the shape of the counterweight block is an isosceles trapezoid that matches the installation groove. Based on the first inclined surface where the installation groove is connected to the casting template, the utility model sets the other side of the installation groove as a second inclined surface with an inclined direction opposite to the first inclined surface. The cross-sectional shapes of the installation groove and the counterweight block are both isosceles trapezoids. The entire reinforcement assembly applies pressure perpendicular to the inclined surface direction to the inclined surface of the casting template, which can further improve the pressing effect on the casting template, thereby improving the stability of the casting template.

[0009] As an improvement of the above solution: it also includes a clamping block, which corresponds to the installation groove one by one; the clamping block is an isosceles triangle structure, and the inclined surface of the clamping block is arranged against the second inclined surface of the corresponding installation groove. The utility model adds a clamping block adapted to the installation groove, and uses the clamping block to abut against the second inclined surface of the installation groove to form a clamping support effect, thereby preventing the casting template from overturning.

[0010] As an improvement of the above scheme: a positioning hole is provided on the first inclined surface of the installation groove, and screws matching the positioning holes are provided on the inner template and the outer template, and the screws pass through the corresponding positioning holes and are fixed by nuts. The utility model realizes a detachable connection between the casting template and the installation groove through the positioning holes, screws and nuts, and while improving the connection and fixing effect between the casting template and the reinforcement component, the casting template and the reinforcement component in the utility model can be disassembled to reuse the reinforcement component, thereby reducing the cost and having better economy.

[0011] As an improvement of the above scheme: the reinforcement components corresponding to the inner formwork and the outer formwork are arranged in multiple groups, and are evenly distributed in a ring shape on both sides of the inner and outer sides of the grouting reinforcement part. The utility model can increase the number of reinforcement components and use the reinforcement components to provide better support and reinforcement effect for the casting formwork.

[0012] As an improvement of the above solution: it also includes a lifting part fixed on the counterweight block. The utility model improves the convenience of carrying the counterweight block by adding the lifting part. The counterweight block can be extracted by the lifting part during the first construction and subsequent repeated use, which is convenient for workers to disassemble or carry the counterweight block.

[0013] As an improvement of the above scheme: the lifting part is a rope, and the rope is wound and fixed on the corresponding counterweight. The utility model uses a rope that is easy to obtain and low in cost as the lifting part, and the rope is fixed on the counterweight by winding, which can form a restraining effect on the counterweight and improve the safety when disassembling and carrying the counterweight.

[0014] As an improvement of the above solution: the inclination angles of the outer template and the inner template are both 45°.

[0015] The beneficial effects of the utility model are as follows: the utility model forms a casting template on the top of the fan foundation body by using an inner template and an outer template, and the inner template and the outer template cooperate with the top surface of the fan foundation body to form a casting cavity for the grouting material, and the inner template and the outer template are set as inclined templates, so that the longitudinal section of the grouting reinforcement part finally cast and formed presents a trapezoidal shape with a small top and a large bottom, and there is no risk of the shoulder strap falling off due to load on the top of the grouting reinforcement part, and the shape of the grouting reinforcement part is more conducive to the transmission of the internal force load of the fan foundation, thereby enhancing the safety of the fan; the utility model also supports and reinforces the inner template and the outer template by adding a reinforcement component, so as to further improve the overall strength and stability of the grouting reinforcement part. The reinforcement component in the utility model has no size limit and can be disassembled for assembly and reuse, thereby effectively reducing construction costs and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 It is a top view of the utility model;

[0018] Figure 3 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0019] Figure 4 It is a structural schematic diagram of the outer template;

[0020] Figure 5 It is a structural schematic diagram of the inner template;

[0021] Figure 6 is a front view of the mounting slot;

[0022] Figure 7 is a top view of the mounting slot;

[0023] Figure 8 is a front view of the counterweight;

[0024] Fig. 9 A schematic diagram of a compression block.

[0025] Marked in the figure: 100-fan foundation body, 200-grouting reinforcement part, 300-external formwork, 400-inner formwork, 500-reinforcement assembly, 510-counterweight block, 511-lifting part, 520-installation groove, 521-first inclined surface, 522-second inclined surface, 523-positioning hole, 600-pressing block, 700-screw. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0027] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "front", "rear", "left", "right", "up", "down", and "inside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description. They do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] like Figures 1 to 3 As shown, the fan foundation of the assembled casting formwork disclosed in the utility model includes a fan foundation body 100, a grouting reinforcement part 200, a casting formwork and a reinforcement assembly 500; wherein, the casting formwork is composed of an outer formwork 300 and an inner formwork 400; the grouting reinforcement part 200 serves as a secondary grouting part of the fan foundation, and is formed by pouring grouting material on the top of the fan foundation body 100. The grouting reinforcement part 200 is an annular structure based on the central axis of the fan foundation body 100, and the grouting reinforcement part 200 and the fan foundation body 100 are further anchored and fixed by a plurality of anchor rods.

[0029] In order to avoid the problem of shoulder straps falling off due to load on the top of the grouting reinforcement part 200 and to improve the stability of the casting template, the present invention improves the structure of the grouting reinforcement part 200 and the casting template used for grouting the grouting reinforcement part 200. Figures 1 to 5As shown, the casting template in the present invention is composed of an outer template 300 and an inner template 400. Both the outer template 300 and the inner template 400 adopt an annular template connected end to end. The outer template 300 is arranged on the outer side of the grouting reinforcement part 200, and the inner template 400 is arranged on the inner side of the grouting reinforcement part 200, that is, the outer diameter of the inner template 400 is smaller than the inner diameter of the outer template 300, and the difference between the outer diameter of the inner template 400 and the inner diameter of the outer template 300 is the width of the grouting reinforcement part 200; the specific dimensions of the outer template 300 and the inner template 400 are set according to the design dimensions of the grouting reinforcement part 200. The outer template 300 and the inner template 300 in the utility model are tilted on the basis of the annular template, so that the tops of the outer template 300 and the inner template 400 are tilted toward the grouting reinforcement part 200, and the bottoms of the outer template 300 and the inner template 400 are in contact with the top surface of the fan foundation body 100, so that the outer template 300, the inner template 400 and the top surface of the fan foundation body 100 form an inverted trapezoidal cavity, which is a semi-enclosed cavity with an opening at the top, and the opening at the top of the cavity is the pouring port of the grouting material. After the casting template is set, the grouting reinforcement part 200 can be cast and formed by injecting grouting material into the semi-enclosed cavity in the casting template, that is, the longitudinal section of the formed grouting reinforcement part 200 is a trapezoid. In the utility model, there is an angle between the side of the grouting reinforcement part 200 and the horizontal direction, thereby avoiding the uncertainty that the shoulder strap may fall off, and is conducive to the transmission of the fan foundation load, which can effectively enhance the safety of the fan unit. Specifically, the preferred inclination angle of the outer template 300 and the inner template 400 in the utility model is 45°.

[0030] Furthermore, in order to avoid the overflow of grouting material during the grouting process, the height of the outer template 300 and the inner template 400 are set to be greater than the height of the grouting reinforcement part 200 in the utility model, so that sufficient space can be left on the upper part of the pouring template to prevent excess grouting from overflowing.

[0031] On the basis of the above casting template, the present invention supports and reinforces the casting template by adding a reinforcement component 500 to improve the stability of the casting template. Figures 1 to 3 As shown, at least two groups of reinforcement components 500 are used, and the two groups of reinforcement components 500 are respectively arranged on the outer side of the outer formwork 300 and the inner side of the inner formwork 400, that is, at least one group of reinforcement components 500 is respectively arranged on the inner and outer sides of the casting formwork; in order to enhance the supporting and reinforcing effect of the casting formwork, the number of reinforcement components 500 used can be increased. When multiple groups of reinforcement components 500 are used, the multiple groups of reinforcement components 500 are evenly distributed in a ring shape on the inner and outer sides of the casting formwork, thereby improving the uniformity of the force on the casting formwork when it bears the supporting force applied by the reinforcement components 500.

[0032] Specifically, Figure 3 , Figure 6 and Figure 7 As shown, the reinforcement assembly 500 used in the utility model is composed of a counterweight 510 and a mounting groove 520. The mounting groove 520 is arranged close to the casting template, and the counterweight 510 is arranged in the mounting groove 520. Since the outer template 300 and the inner template 400 constituting the casting template in the utility model are both inclined, in order to ensure the close contact between the mounting groove 520 and the casting template, the side of the mounting groove 520 that contacts the outer template 300 or the inner template 400 is set as an inclined surface, that is, a first inclined surface 521, and the inclination angle of the first inclined surface 521 is adapted to the inclination angle of the contacting template. The mounting groove 520 is a groove-shaped structure for accommodating the counterweight 510. The shape of the counterweight 510 is adapted to the mounting groove 520. The counterweight 510 is directly placed in the mounting groove 520, so that the counterweight 510 can be disassembled and assembled. At the same time, the weight of the counterweight 510 itself can keep the counterweight 510 stable in the mounting groove 520. The counterweight block 510 provides counterweight for the entire reinforcement assembly 500 , and enhances the stability of the entire casting formwork through the gravity of the reinforcement assembly 500 itself and the pressure applied on the side of the casting formwork perpendicular to the outer formwork 300 or the inner formwork 400 .

[0033] Furthermore, the utility model also sets the side of the installation groove 520 away from the casting template as an inclined surface, which is the second inclined surface 522. The second inclined surface 522 is inclined in the opposite direction to the first inclined surface 521, so that the longitudinal section of the installation groove 520 forms an isosceles trapezoid with a larger upper part and a smaller lower part. Correspondingly, the longitudinal section of the counterweight block 510 is also an isosceles trapezoid that is adapted to the installation groove 520. The longitudinal section of the counterweight block 510 is an isosceles trapezoid with a smaller upper part and a larger lower part. At the same time, the utility model sets a clamping block 600 to cooperate with the second inclined surface 522. The clamping block 600 is set on the outside of the second inclined surface 522 and abuts against the second inclined surface 522; Fig. 9 As described above, the clamping block 600 adopts an isosceles triangle structure, and the inclined surface of the clamping block 600 is tightly attached to the second inclined surface 522 of the installation groove 520. The clamping block 600 applies a clamping force from the side of the installation groove 520 to indirectly prevent the casting template from overturning.

[0034] Specifically, in order to ensure a stable fixed connection between the reinforcement component 500 and the casting template, the utility model adopts a detachable connection method to connect the installation groove 520 in the reinforcement component 500 with the outer template 300 or the inner template 400 constituting the casting template. Figure 4 and Figure 5 As shown, screws 700 are fixed on the outer template 300 and the inner template 400, and the number of screws 700 can be set according to actual needs; at the same time, as shown Figure 6 and Figure 7As shown, a positioning hole 523 for the screw 700 to pass through is provided on the first inclined surface 521 of the installation groove 520. When the installation groove 520 is abutted against the outer template 300 or the inner template 400, after the screw 700 passes through the corresponding positioning hole 523, a nut is installed on the screw 700 to fasten the installation groove 520 to the outer template 300 or the inner plate 400. With the above-mentioned detachable connection method, the reinforcement component 500 in the utility model can be detached and reused, which can not only effectively reduce the construction cost, but also shorten the construction period.

[0035] In order to facilitate the disassembly, assembly and transportation of the counterweight 510, Figure 8 As shown, the utility model is provided with a lifting part 511 on the counterweight 510. The specific structure of the lifting part 511 is not limited, as long as the lifting part 511 can be used to lift the counterweight 510, which is convenient for workers to operate; for example, the lifting part 511 can be a handle, a handle or a rope. In the utility model, a rope is used as a preferred solution for the lifting part 511. The rope is fixed on the counterweight 510 in a winding manner, which can not only provide sufficient strength, but also improve the safety of workers when carrying.

Claims

1. A fan foundation of an assembled casting formwork, comprising a fan foundation body (100) and a grouting reinforcement part (200) arranged on the top of the fan foundation body (100), wherein the grouting reinforcement part (200) is an annular structure and is fixed by a plurality of anchor rods, and is characterized in that: The invention also includes an inner template (400) and an outer template (300) respectively arranged on the inner and outer sides of the grouting reinforcement part (200), wherein the inner template (400) and the outer template (300) are both annular templates, and the tops of the inner template (400) and the outer template (300) are inclined toward the grouting reinforcement part (200) to form a semi-enclosed cavity with the top surface of the wind turbine foundation body (100) for accommodating the grouting reinforcement part (200), and the grouting reinforcement part (200) is formed by grouting into the semi-enclosed cavity; and also includes at least two groups of reinforcement components (500) respectively supporting the inner template (400) and the outer template (300).

2. The fan foundation of the assembled casting formwork according to claim 1, characterized in that: The heights of the inner formwork (400) and the outer formwork (300) are both greater than the height of the grouting reinforcement part (200).

3. The fan foundation of the assembled casting formwork according to claim 1 or 2, characterized in that: The reinforcement assembly (500) comprises a counterweight block (510) and a mounting groove (520), wherein the counterweight block (510) is arranged in the mounting groove (520); the mounting groove (520) is arranged close to the inner template (400) or the outer template (300), and a surface of the mounting groove (520) that is in contact with the inner template (400) or the outer template (300) is a first inclined surface (521), and the first inclined surface (521) is detachably connected to the inner template (400) or the outer template (300).

4. The fan foundation of the assembled casting formwork according to claim 3 is characterized in that: A side of the installation groove (520) away from the inner template (400) or the outer template (300) is a second inclined surface (522), and the longitudinal section of the installation groove (520) is an isosceles trapezoid that is larger at the top and smaller at the bottom; the shape of the counterweight block (510) is an isosceles trapezoid that matches the installation groove (520).

5. The fan foundation of the assembled casting formwork according to claim 4, characterized in that: It also includes a pressing block (600), which corresponds to the installation groove (520) one by one; the pressing block (600) is an isosceles triangle structure, and the inclined surface of the pressing block (600) is arranged in contact with the second inclined surface (522) of the corresponding installation groove (520).

6. The fan foundation of the assembled casting formwork according to claim 3, characterized in that: A positioning hole (523) is provided on the first inclined surface (521) of the installation groove (520), and screw rods (700) adapted to the positioning hole (523) are provided on the inner template (400) and the outer template (300). The screw rods (700) pass through the corresponding positioning holes (523) and are fixed by nuts.

7. The fan foundation of the assembled casting formwork according to claim 1, characterized in that: The reinforcement components (500) corresponding to the inner formwork (400) and the outer formwork (300) are arranged in multiple groups and are evenly distributed in a ring shape on both inner and outer sides of the grouting reinforcement part (200).

8. The fan foundation of the assembled casting formwork according to claim 3, characterized in that: It also includes a lifting portion (511) fixed on the counterweight block (510).

9. The fan foundation of the assembled casting formwork according to claim 8, characterized in that: The lifting portion (511) is a rope, and the rope is wound and fixed on the corresponding counterweight block (510).

10. The fan foundation of the assembled casting formwork according to claim 1, characterized in that: The inclination angles of the outer template (300) and the inner template (400) are both 45°.

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