Wooden mold for main shaft of fan

Abstract

The utility model provides a fan main shaft wood mould which comprises a frame, a mould plate is horizontally arranged on the frame, a sand mould of a wood structure is arranged on the frame and the mould plate, the sand mould comprises a first sand mould block, a second sand mould block, a third sand mould block, a fourth sand mould block and a fifth sand mould block which are spliced with one another, and the first sand mould block, the second sand mould block, the third sand mould block, the fourth sand mould block and the fifth sand mould block are mutually spliced. And core assemblies are arranged on the second sand mold block, the third sand mold block and the fourth sand mold block. The sand mold has the advantages that the sand mold is formed by splicing a plurality of sand mold blocks, and each sand mold block can be disassembled without damaging the casting sand mold after the sand mold is founded and cast.

Description

Technical Field

[0001] This utility model relates to the technical field of wooden molds, and in particular to a wooden mold for a fan main shaft. Background Technology

[0002] The main shaft of a wind turbine must withstand enormous axial forces, radial forces, and alternating stresses, and also possess extremely high dimensional accuracy and structural stability to ensure long-term stable and efficient operation of the wind turbine in complex and ever-changing natural environments. Wooden mold sand casting is one of the most widely used processes in the manufacturing of wind turbine main shafts. Sand molds are cast into casting molds, into which the main shaft is then poured to form the turbine shaft. However, for large and complex-shaped wind turbine main shafts, it is difficult to disassemble the sand mold after casting to expose the inner casting mold. Therefore, there is an urgent need to design a wooden mold for wind turbine main shafts. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a wooden mold for the main shaft of a fan.

[0004] This utility model provides a wooden mold for a fan spindle, including a frame 1, a template 2 horizontally arranged on the frame 1, and a wooden sand mold arranged on the frame 1 and the template 2. The sand mold includes a first sand mold block 3, a second sand mold block 4, a third sand mold block 5, a fourth sand mold block 6, and a fifth sand mold block 7 spliced ​​together. A core component 8 is arranged on the second sand mold block 4, the third sand mold block 5, and the fourth sand mold block 6.

[0005] Furthermore, the first sand mold block 3 is composed of an outer positioning part connected to an inner sand mold part.

[0006] Furthermore, there are eight second sand mold blocks 4, which are spliced ​​together to form a ring and connected to the first sand mold block 3.

[0007] Furthermore, there are two third sand mold blocks 5, which are spliced ​​together to form a ring and connected to the second sand mold block 4.

[0008] Furthermore, the fourth sand mold block 6 is connected to the third sand mold block 5, and the fifth sand mold block 7 is connected to the fourth sand mold block 6 and the third sand mold block 5.

[0009] Furthermore, the core assembly 8 includes a first core block 8.1 and a second core block 8.2. The first core block 8.1 is circumferentially distributed on the second sand mold block 4, and the second core block 8.2 is distributed from top to bottom on the second sand mold block 4, the third sand mold block 5, and the fourth sand mold block 6.

[0010] Furthermore, the top circumferentially distributed with frame blocks 9 of the template 2.

[0011] The advantages of this invention are as follows: the sand mold is composed of multiple sand mold blocks, which can be disassembled after sand casting without damaging the casting sand mold; the wooden structure of the sand mold is easy to process, and the wood is lightweight and has low production cost; the first, second, third, fourth, and fifth sand mold blocks are spliced ​​together to form a sand mold for sand casting into a casting sand mold, which is convenient for replacement and production; the positioning part is sand cast to form a positioning groove, which ensures the accurate relative position between each component during the sand casting process, thereby improving the precision and quality of the casting sand mold; the ring splicing structure is not only more mechanically stable and can evenly distribute the force, but also conducive to forming the circular contour required by the fan main shaft; the second core block can be sand cast to form the core groove of the casting sand mold, which is later formed into the mounting position inside the fan main shaft; the frame block setting allows the wooden mold to be placed on the ground without damaging the structure of the wooden mold. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model;

[0014] Figure 3 This is the front view of the present invention;

[0015] Figure 4 This is a top view of the present invention;

[0016] Figure 5 for Figure 3 AA sectional view. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] See Figures 1 to 5This utility model provides a wooden mold for a wind turbine main shaft, comprising a frame 1, which is a steel structure. A template 2 is horizontally arranged on the frame 1, and the template is equilateral hexagonal. A wooden sand mold is arranged on the frame 1 and the template 2. Wood has a certain degree of flexibility and plasticity. When making sand casting molds, wood is easier to process into various unique shapes for casting models with complex shapes, curves, or irregular structures. Moreover, wood is lightweight and has low production costs. This sand mold uses a wooden mold for shaping, and then fills the wooden mold with sand to form a casting sand mold. The sand mold includes a first sand mold block 3 and a second sand mold block 4, which are spliced ​​together. Sand mold blocks 4, 5, 6, and 7, and the first, second, third, fourth, and fifth sand mold blocks can be disassembled outwards or downwards (the main view shows them in an inverted state) without affecting the casting sand. They are spliced ​​together and used to form sand molds for casting sand molds. Individual sand mold blocks are easy to replace and manufacture. After casting sand molds are made, each sand mold block can be disassembled without damaging the casting sand mold, so that the casting sand mold can be repeatedly made. The second, third, and fourth sand mold blocks 4, 5, and 6 are equipped with core components 8. The core components are installed on the sand mold blocks and are used to form the core grooves for casting sand molds.

[0020] The first sand mold block 3 consists of an outer positioning part connected to an inner sand mold part. The positioning part is sand-cast to form a positioning groove. During the sand casting process, the relative positions between the various components are kept accurate, thereby improving the precision and quality of the casting sand mold. The outer circumference of the sand mold part is evenly distributed with lugs, which correspond to the protrusions of the positioning part.

[0021] The number of second sand mold blocks 4 is eight. The second sand mold blocks 4 are spliced ​​together to form a ring and connected to the first sand mold block 3. The number of third sand mold blocks 5 is two. The third sand mold blocks 5 are spliced ​​together to form a ring and connected to the second sand mold blocks 4. The ring splicing structure is not only more mechanically stable and can evenly distribute the force, but also conducive to forming the circular profile required for the main shaft of the wind turbine.

[0022] The fourth sand mold block 6 is connected to the third sand mold block 5, and the fifth sand mold block 7 is connected to the fourth sand mold block 6 and the third sand mold block 5.

[0023] See Figure 1 , Figure 5 The core assembly 8 includes a first core block 8.1 and a second core block 8.2. The first core block 8.1 is circumferentially distributed on the second sand mold block 4, and the second core block 8.2 is distributed from top to bottom on the second sand mold block 4, the third sand mold block 5, and the fourth sand mold block 6. The second core block can be sand-cast into the core groove of the casting sand mold, and later formed into the mounting position inside the main shaft of the fan.

[0024] The top circumferential area of ​​template 2 has support blocks 9. The support blocks allow the wooden template to be placed on the ground without damaging its structure.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A wooden mandrel for a main shaft of a fan, characterized in that: The application relates to a sand mold with a frame, a template horizontally arranged on the frame, a wooden structure sand mold arranged on the frame and the template, the sand mold comprising first sand mold blocks, second sand mold blocks, third sand mold blocks, fourth sand mold blocks and fifth sand mold blocks which are spliced with each other, a core assembly arranged on the second sand mold blocks, the first sand mold block composed of a positioning part on the outer side and a sand mold part on the inner side, the number of the second sand mold blocks being eight, the second sand mold blocks spliced into a ring shape and connected to the first sand mold block, the number of the third sand mold blocks being two, the third sand mold blocks spliced into a ring shape and connected to the second sand mold blocks, the fourth sand mold blocks connected to the third sand mold blocks, and the fifth sand mold blocks connected to the fourth sand mold blocks and the third sand mold blocks.

2. A wooden pattern for a main shaft of a fan as defined in claim 1, characterized in that: The core assembly comprises first core blocks and second core blocks, the first core blocks distributed in the circumferential direction of the second sand mold blocks, and the second core blocks distributed in the second sand mold blocks, the third sand mold blocks and the fourth sand mold blocks in sequence from top to bottom.

3. A wooden pattern for a main shaft of a fan as defined in claim 1, characterized in that: The top end of the template is circumferentially distributed with frame blocks.

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