Protective frame for wind power hub box closing

Abstract

The protective frame comprises a platform, guardrails and reinforced supporting legs, the guardrails are fixed to the long side of the outer side of the platform, at least two sets of reinforced supporting legs are fixed to the bottom of the platform in the length direction of the platform, and the long side of the inner side of the platform is detachably fixed to the outer side wall of the side, needing to be protected, of a sand box. And the inner end parts of the reinforced supporting legs are attached and propped against the box ribs of the sand box. The protective frames are arranged on the outer side wall of the side, needing to be protected, of the sand box, so that the problems that the safety risk is high and the production efficiency is low when a wind power hub stands on the sand box in the casting process are solved, the protective frames on each side of the sand box are independently arranged and have no assembly relation, and the sectional protective frames are light in appearance and convenient to operate and use; the protective frame is flexible to mount and dismount, the production efficiency can be remarkably improved when a worker operates on the platform, and the operation safety guarantee of the worker can be improved by using the protective frame.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of protection frame, specifically relates to a protection frame for wind power hub box closing. BACKGROUND

[0002] In recent years, wind power hub is developing towards megawatt direction, and the outline size and weight are increasing. The wind power hub is usually composed of two half shells, and the shaft hole is arranged in the middle, and a plurality of blade mounting holes are arranged on the side of the spherical shell-shaped wind power hub. The outline size of the casting is generally about φ4000mm*4000mm long, and the weight is about 20-30T. Considering the economy of production cost, the industry adopts the way of producing by the pit modeling hexagonal special sand box.

[0003] The wind power hub casting process is usually one box one piece, and the parting surface is the surface of the center of the three variable pitch surfaces. The upper box and the lower box sand box are about 3 meters high. During the production process, the personnel stand on the sand box about 3 meters high to carry out the core, the paving, the closing and other processes. The above-mentioned way has the following defects in the production process: ① high safety risk: the operator needs to walk back and forth on the parting surface during the core, the paving, the supplementing and the measuring, but the sand box frame is only about 100mm wide, and the parting surface consumes about 150mm of sand, that is, the personnel operate on the sand box edge about 3 meters high and 250mm wide. During the closing, the operator also needs to stand on the parting surface and adjust the direction by hand holding the 3m high upper box. With the gradual falling of the upper box, the operator must slowly move from the parting surface to the side of the sand box until the closing is completed. The whole production process is high-altitude operation, and the personnel have no protective measures, so the safety risk is large; ② low production efficiency: after the closing is completed, the sand box needs to be locked and the sand needs to be filled. The hexagonal sand box needs to be filled with sand on 6 sides and locked on 36 holes. Therefore, the operator needs to use the ladder to climb and move the ladder for operation, and one person needs to cooperate with the fixed ladder, which greatly wastes human resources, seriously restricts the production efficiency and still has safety risks. Therefore, it is necessary to improve the above-mentioned problems. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem: provide a kind of protection frame for wind power hub closing, by being set on the outer side wall of the sand box side needing protection, solve the problem that personnel operate on the sand box in the process of wind power hub casting is high in security risk and low in production efficiency, the protection frame of each side of sand box is independently set, there is no assembly relationship, and the sectional protection frame is light and handy, easy to operate and use, the protection frame is installed and disassembled flexibly, and the production efficiency can be significantly improved when personnel operate on the platform, and the use of protection frame can improve the safety guarantee of personnel operation.

[0005] The utility model discloses a technical scheme: wind power hub's protection frame for closing a box, including platform, guardrail and reinforced branch leg, the long side of platform outside is fixed with guardrail, and the bottom of platform is fixed with not less than two groups reinforced branch leg along its length direction, the long side of platform inside can be detachably fixed on the outside wall of the required protection side of sand box, and the inner end portion of reinforced branch leg is attached to the sand box box rib and is tightly closed.

[0006] Among them, the long side of platform inside is evenly provided with a plurality of outwardly overhanging pin hole plates, the pin hole plate overhanging end is attached to the sand box horizontal rib plate upper plate, and platform is detachably fixed on the sand box outside wall through the plug pin of pin hole plate and sand box horizontal rib plate.

[0007] Further, the reinforced branch leg includes a main branch leg, a secondary branch leg and a reinforcing diagonal brace, the secondary branch leg is arranged towards the sand box side, and the main branch leg is located outside the secondary branch leg, the upper end of the main branch leg and the secondary branch leg is fixed on the bottom surface of the platform, and the outer end of the brace rod is fixedly connected with the inner side wall of the lower end of the main branch leg through the hole of the lower end of the secondary branch leg, the upper end of the reinforcing diagonal brace is fixedly connected with the outer edge position of the bottom surface of the platform, and the lower end of the reinforcing diagonal brace is fixed on the outer side wall of the lower end of the main branch leg, and the inner end of the brace rod is attached to the sand box box rib and is tightly closed.

[0008] Further, the upper end side wall of the main branch leg and the secondary branch leg is provided with a diagonal brace fixedly connected with the bottom surface of the platform.

[0009] Further, the guardrail is formed by welding more than one frame structure of a T-shaped frame structure according to the length of the horizontal and vertical steel pipes, and the height of the guardrail is 1300mm.

[0010] Further, the distance between the platform and the top surface of the sand box is 900mm.

[0011] Further, the opening end of the platform adjacent to the wall side of the sand box is fixed with a sealing rail.

[0012] The utility model discloses the advantages compared with prior art:

[0013] 1, this technical scheme is through setting up the protection frame on the outside wall of the required protection side of sand box, solves the problem of high safety risk and low production efficiency of standing on the sand box during the wind power hub casting process, and the protection frame of each side of sand box is independently arranged, has no assembly relation, and is convenient to install and use.

[0014] 2, this technical scheme does not need to change the structure of sand box, under the premise that the protection frame is inserted with the horizontal rib plate of sand box, makes the inner end portion of brace rod and sand box box rib attach and tightly close and support, guarantees that the support structure is stable and reliable, and is convenient to dismount.

[0015] 3、The technical scheme is segmented protection frame, which is light and easy to operate, and the protection frame is flexible to install and disassemble, and the operation efficiency of personnel on the platform can be improved, and the use of the protection frame can improve the operation safety of personnel. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model;

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

[0018] Figure 3 It is a structure right view of the utility model;

[0019] Figure 4 It is a use state schematic view of the utility model. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with Figures 1-4 , and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] It should be noted that, in this article, without the opposite description, it is understood that: the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the invention and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the invention. In addition, the terms "first", "second", "third" and the like are only for description purposes, and cannot be understood as indicating or implying relative importance.

[0022] In this article, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations. The element defined by the statement "including a..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0023] The protection frame for wind power hub box closing is used forFigures 1-4 As shown, it comprises a platform 1, a guardrail 2 and a reinforced support leg 3, the long side outside of the platform 1 is fixed with the guardrail 2, and the bottom of the platform 1 is fixed with no less than two groups of reinforced support legs 3 along the length direction, the long side inside of the platform 1 is detachably fixed on the outside wall of the required protection side of the sand box 5, and the inner end of the reinforced support leg 3 is tightly fitted with the box rib of the sand box 5; in the above structure, by setting the protection frame on the outside wall of the required protection side of the sand box 5, the problem of high safety risk and low production efficiency in the process of casting the wind power hub standing on the sand box 5 is solved, the protection frame on each side of the sand box 5 is independently set without assembly relationship, which is convenient for installation and use;

[0024] The detachable fixed connection structure of the platform 1 and the sand box 5 is as follows: the long side inside of the platform 1 is uniformly provided with a plurality of outwardly suspended pin hole plates 4, the suspended end of the pin hole plate 4 is attached to the plate surface of the horizontal rib plate of the sand box 5, and the platform 1 is detachably fixed on the outside wall of the sand box 5 through the pin 6 inserted and matched with the pin hole on the horizontal rib plate of the sand box 5.

[0025] In use, the pin hole plate 4 is connected with the sand box 5 by the pin 6, so that the protection frame is installed on the sand box 5. One pin hole plate 4 is provided on the platform 1 of the protection frame every 1000mm, that is, 2-3 pins 6 need to be installed or removed every time the protection frame is used, which is simple and fast to operate.

[0026] The specific structure of the reinforced support leg 3 is as follows: the reinforced support leg 3 comprises a main support leg 3-1, an auxiliary support leg 3-2 and a reinforcing inclined strut 3-3, the auxiliary support leg 3-2 is arranged towards the side of the sand box 5, and the main support leg 3-1 is located outside the auxiliary support leg 3-2, the upper end of the main support leg 3-1 and the auxiliary support leg 3-2 is fixed on the bottom surface of the platform 1, and the outer end of the support rod 3-4 is fixedly connected with the inner side wall of the lower end of the main support leg 3-1 through the hole of the lower end of the auxiliary support leg 3-2, the upper end of the reinforcing inclined strut 3-3 is fixedly connected with the outer edge position of the bottom surface of the platform 1, and the lower end of the reinforcing inclined strut 3-3 is fixed on the outer side wall of the lower end of the main support leg 3-1, and the inner end of the support rod 3-4 is tightly fitted with the box rib of the sand box 5; specifically, the upper end side wall of the main support leg 3-1 and the auxiliary support leg 3-2 is provided with an inclined strut 3-5 fixedly connected with the bottom surface of the platform 1, the above structure is made of a square steel pipe with a size of 50mm*90mm and a wall thickness of 3mm, which ensures the strength and rigidity of the protection frame and improves its protection performance; in the above structure, without changing the structure of the sand box 5, the support rod 3-4 is tightly fitted with the box rib of the sand box 5 for support under the premise of inserting the pin 6 into the horizontal rib plate of the sand box 5, which ensures the stability and reliability of the support structure and is convenient for disassembly and assembly;

[0027] The guardrail 2 is a grid-shaped frame structure made of multiple steel pipes arranged horizontally and vertically, with a height of 1300mm. Specifically, the distance between the platform 1 and the top surface of the sand box 5 is 900mm. The guardrail 2 protects personnel. It is made of φ30 steel pipes welded into a grid-shaped frame. The grid design creates a double steel pipe at the joint of two protective frames, effectively filling the gap between the protective frames and enhancing their protective function. The guardrail 2 is 1300mm high, slightly higher than the center of gravity of a person by 1100mm, effectively preventing personnel from falling and getting injured when operating at a height of 3000mm.

[0028] like Figure 4 As shown, the protective frames on the five outer walls of the sand box 5 are independent of each other and have no assembly relationship, which facilitates installation and use. The hexagonal sand box 5 only requires five protective frames, that is, the sixth side does not need a protective frame. When in use, the side of the sand box 5 without a protective frame is placed against the side wall of the pit, maintaining a distance of about 800mm from the pedestrian walkway, which makes it easy for personnel to cross over and retrieve the tools and materials needed in the production process (all of which are placed on the pedestrian walkway), saving the installation and dismantling of one protective frame. The opening ends of the two platforms 1 adjacent to the wall side of the sand box 5 are fixed with sealing railings 7 to improve safety.

[0029] Platform 1 is the position where operators stand and work. The steel plate used to manufacture Platform 1 must be strong enough to bear a load of 300 kg. Therefore, a 3mm anti-slip steel plate is used, cut and welded as a single piece to ensure the integrity of Platform 1, thereby ensuring the safety and reliability of the protective frame. The height of Platform 1 from the top surface of Sand Box 5 is 900mm, which is the most suitable operating height for personnel. It is suitable for personnel to stand on Platform 1 to lock the box, insert sand, etc., and the 900mm height also makes it easy for personnel to move from the parting surface to Platform 1 when closing the box.

[0030] This technical solution features a segmented protective frame that is lightweight, easy to operate, and flexible in installation and disassembly. It allows personnel to operate on the platform, significantly improving production efficiency and enhancing personnel safety.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A protective frame for a wind turbine hub closing box, characterized in that: It includes platform (1), guardrail (2) and reinforced leg (3), the long side of the outer side of the platform (1) is fixed with guardrail (2), and the bottom of the platform (1) is fixed with not less than two groups of reinforced legs (3) along its length direction, the long side of the inner side of the platform (1) is detachably fixed on the outer side wall of the required protection side of the sand box (5), and the inner end of the reinforced leg (3) is tightly attached to the sand box (5) box rib.

2. The protection frame for the windmill hub joint box according to claim 1, characterized in that: The long side of the inner side of the platform (1) is uniformly distributed with a plurality of outwardly suspended pin hole plates (4), the suspended end of the pin hole plate (4) is attached to the surface of the horizontal rib plate of the sand box (5), and the platform (1) is detachably fixed on the outer side wall of the sand box (5) through the pin (6) which is inserted and matched with the pin hole of the pin hole plate (4) and the horizontal rib plate of the sand box (5).

3. The protection frame for the windmill hub joint box according to claim 1, characterized in that: The reinforced leg (3) includes main leg (3-1), auxiliary leg (3-2) and reinforcing inclined strut (3-3), the auxiliary leg (3-2) is arranged towards the side of the sand box (5), and the main leg (3-1) is located outside the auxiliary leg (3-2), the upper end of the main leg (3-1) and the auxiliary leg (3-2) is fixed on the bottom surface of the platform (1), and the outer end of the brace (3-4) is fixedly connected with the inner side wall of the lower end of the main leg (3-1) through the hole of the lower end of the auxiliary leg (3-2), the upper end of the reinforcing inclined strut (3-3) is fixedly connected with the outer edge position of the bottom surface of the platform (1), and the lower end of the reinforcing inclined strut (3-3) is fixed on the outer side wall of the lower end of the main leg (3-1), the inner end of the brace (3-4) is tightly attached to the sand box (5) box rib.

4. The protection frame for the windmill hub joint box according to claim 3, characterized in that: The upper end side wall of the main leg (3-1) and the auxiliary leg (3-2) is provided with inclined strut (3-5) fixedly connected with the bottom surface of the platform (1).

5. The protective frame for the windmill hub joint box according to any one of claims 1-4, characterized in that: The guardrail (2) is more than one frame structure of T-shaped frame structure welded by horizontal and vertical steel pipes according to its length, and the height of the guardrail (2) is 1300mm.

6. The protection frame for the windmill hub joint box according to claim 5, characterized in that: The distance between the platform (1) and the top surface of the sand box (5) is 900mm.

7. The protective frame for the windmill hub joint box according to claim 6, characterized in that: The opening end of the two platforms (1) adjacent to the wall side of the sand box (5) is fixed with the closing rail (7).

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