阅读说明：本技术 一种用于叶片分模的局部反推结构 (Local reverse thrust structure for blade mold splitting ) 是由 刘嘉 曹孝君 李冬冬 宋丽丽 侯冬梅 凌磊 于 2021-08-17 设计创作，主要内容包括：本发明涉及一种用于叶片分模的局部反推结构,包括：销套,所述销套内部限定出容纳腔；加压块,所述加压块中部具有安装所述销套的安装区；以及反推螺钉,所述反推螺钉插入金属导柱内部,且与其螺纹连接；通过外力拧动所述反推螺钉,所述反推螺钉向外部推动所述销套与所述加压块分离。本发明公开提供了一种用于叶片分模的局部反推结构,在金属导柱处安装一个销套,保证了金属导柱处的局部尺寸,防止其发生形变,在销套内部安装一个反推螺钉,能够快速分模,解决了金属导柱和加压块配合后变形,尺寸无法保证,也不利于分模的问题。(The invention relates to a local reverse thrust structure for blade mold splitting, which comprises: the pin sleeve internally defines a containing cavity; the middle part of the pressurizing block is provided with an installation area for installing the pin bush; the reverse thrust screw is inserted into the metal guide pillar and is in threaded connection with the metal guide pillar; the reverse-pushing screw is screwed by external force, and the reverse-pushing screw pushes the pin bush to be separated from the pressurizing block to the outside. The invention discloses a local reverse-pushing structure for blade die-splitting, which is characterized in that a pin bush is arranged at a metal guide pillar, so that the local size of the metal guide pillar is ensured, the metal guide pillar is prevented from deforming, a reverse-pushing screw is arranged in the pin bush, the die-splitting can be carried out quickly, and the problems that the metal guide pillar is deformed after being matched with a pressurizing block, the size cannot be ensured, and the die-splitting is not facilitated are solved.)

1. A local backstepping structure for blade parting, comprising:

the pin sleeve (1) is internally provided with a containing cavity;

the middle part of the pressurizing block (2) is provided with an installation area for installing the pin bush (1); and

the reverse thrust screw (3) is inserted into the metal guide pillar (4) and is in threaded connection with the metal guide pillar; the reverse-thrust screw (3) is screwed by external force, and the reverse-thrust screw (3) pushes the pin sleeve (1) and the pressurizing block (2) to be separated from each other.

2. The local reverse thrust structure for the blade parting die of claim 1, characterized in that the pin bushing (1) comprises a connecting section and an abutting section which are connected in a stepped manner, the accommodating cavity is positioned in the connecting section, the diameter of the abutting section is larger than that of the connecting section, and a mounting area in the middle of the pressurizing block (2) is provided with a stepped channel matched with the connecting section and the abutting section.

3. The local reverse thrust structure for the blade parting die of claim 2, characterized in that the middle part of the abutting section is provided with an operating channel communicated with the accommodating cavity.

4. Local thrust reverser structure for vane splitting according to claim 3, characterized in that the thrust reverser screws (3) have connecting threads on the outer wall and hexagonal structure inside, the center of the hexagonal structure corresponding to the operating channel.

5. The local backstepping structure for blade parting according to any one of claims 1 to 4, characterized in that the pin bushing (1) is made of 40 Cr.

6. Local thrust reverser structure for blade parting according to anyone of claims 1 to 4, characterized in that the thrust reverser screws (3) are made of 40 Cr.

7. The local reverse-thrust structure for blade parting according to claim 6, characterized in that the length of the reverse-thrust screw (3) is determined according to the length of the internal thread of the metal guide pillar (4).

8. The local backstepping structure for blade splitting according to claim 6, characterized in that the wall thickness of the backstepping screw (3) is greater than or equal to 5 mm.

9. The local reverse thrust structure for the blade parting die of any one of claims 1 to 4, characterized in that the shape of the pressurizing block (2) close to the side of the metal guide pillar (4) is matched with the shape of the blade.

Technical Field

The invention relates to the technical field of propellers, in particular to a local reverse thrust structure for blade mold splitting.

Background

In the existing blade, two metal guide posts for improving the integral strength of the blade are arranged at a blade shoulder, and a blade shoulder pressurizing block is generally arranged on the metal guide posts and then is fixed by pressurizing and high-temperature molding; however, after cooling, because both components will have certain deformation and certain adhesion between the two parts, it is very difficult to separate the two components, so that the two components cannot be separated, and the sizes of the two components cannot be ensured.

Therefore, it is a problem to be solved by those skilled in the art to provide a reverse structure that can ensure the molding size and facilitate the mold separation.

Disclosure of Invention

Therefore, the invention aims to provide a local reverse thrust structure for blade mold splitting, and solves the problems that a metal guide pillar and a pressurizing block deform after being matched, the size cannot be ensured, and mold splitting is not facilitated.

The invention provides a local reverse thrust structure for blade mold splitting, which comprises:

the pin sleeve internally defines a containing cavity;

the middle part of the pressurizing block is provided with an installation area for installing the pin bush; and

the reverse thrust screw is inserted into the metal guide pillar and is in threaded connection with the metal guide pillar; the reverse-pushing screw is screwed by external force, and the reverse-pushing screw pushes the pin bush to be separated from the pressurizing block to the outside.

According to the technical scheme, compared with the prior art, the invention discloses the local reverse-pushing structure for the blade die-splitting, the pin bush is arranged at the metal guide pillar, so that the local size of the metal guide pillar is ensured, the deformation of the metal guide pillar is prevented, the reverse-pushing screw is arranged in the pin bush, the die-splitting can be performed quickly, and the problems that the metal guide pillar is deformed after being matched with the pressurizing block, the size cannot be ensured, and the die-splitting is not facilitated are solved.

Further, the cotter includes the linkage segment and the butt section of ladder connection, it is in to hold the chamber in the linkage segment, butt section diameter is greater than the linkage segment diameter, the installing zone in pressurization piece middle part have with the ladder passageway of linkage segment and butt section adaptation.

Further, the middle part of the abutting section is provided with an operation channel communicated with the accommodating cavity.

Furthermore, the outer wall of the reverse-thrust screw is provided with connecting threads, the inside of the reverse-thrust screw is provided with a hexagonal structure, and the center of the hexagonal structure corresponds to the operation channel.

Further, the pin bush is made of 40 Cr.

Further, the reverse-thrust screw is made of 40 Cr.

Further, the length of the reverse-thrust screw is determined according to the length of the internal thread of the metal guide pillar.

Further, the wall thickness of the reverse-thrust screw is greater than or equal to 5 mm.

Further, the shape of the pressurizing block close to the side of the metal guide column is matched with the shape of the blade.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a local backstepping structure for blade mold splitting according to the present invention;

FIG. 2 is a schematic view of an assembly structure of a local reverse thrust structure for blade parting according to the present invention;

in the figure: 1-pin sleeve, 2-pressurizing block, 3-reverse thrust screw and 4-metal guide post.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to the accompanying drawings 1 and 2, the embodiment of the invention discloses a local reverse thrust structure for blade parting, which specifically comprises a pin sleeve 1, wherein a containing cavity is defined inside the pin sleeve 1; the middle part of the pressurizing block 2 is provided with an installation area for installing the pin bush 1; the reverse thrust screw 3 is inserted into the metal guide post 4 and is in threaded connection with the metal guide post; the reverse-thrust screw 3 is screwed by external force, and the reverse-thrust screw 3 pushes the pin bush 1 and the pressurizing block 2 to be separated from each other to the outside. The invention discloses a local reverse-pushing structure for blade die-splitting, which is characterized in that a pin bush is arranged at a metal guide pillar, so that the local size of the metal guide pillar is ensured, the metal guide pillar is prevented from deforming, a reverse-pushing screw is arranged in the pin bush, the die-splitting can be carried out quickly, and the problems that the metal guide pillar is deformed after being matched with a pressurizing block, the size cannot be ensured, and the die-splitting is not facilitated are solved.

Advantageously, the pin bush 1 comprises a connecting section and an abutting section which are connected in a stepped manner, the accommodating cavity is located in the connecting section, the diameter of the abutting section is larger than that of the connecting section, and a mounting area in the middle of the pressurizing block 2 is provided with a stepped channel matched with the connecting section and the abutting section. The pin bush is in clearance fit with the pressurizing block when being installed.

Advantageously, the middle part of the abutting section is provided with an operation channel communicated with the accommodating cavity, the outer wall of the thrust-back screw 3 is provided with a connecting thread, the inside of the thrust-back screw is provided with a hexagonal structure, and the center of the hexagonal structure corresponds to the operation channel. The driving force is exerted by a wrench entering the operation channel and inserting the hexagonal structure.

Wherein the pin bush 1 is made of 40 Cr; the reverse thrust screw 3 is made of 40 Cr.

The length of the reverse-thrust screw 3 is determined according to the length of the internal thread of the metal guide post 4. Therefore, the service life of the reverse thrust screw can be ensured, and sufficient reverse thrust can be ensured.

In the embodiment of the invention, the wall thickness of the reverse-thrust screw 3 is more than or equal to 5mm, so that the connection strength is ensured.

In the above embodiment, the shape of the pressurizing block 2 near the metal guide pillar 4 is adapted to the shape of the blade.

The reverse thrust screw 3 of the invention is screwed into the metal guide post 4, and the pressurizing block 2 and the pin bush 1 are arranged on the metal guide post 4. After the blade is formed, a standard inner hexagonal wrench penetrates through the pin sleeve 1 and the pressurizing block 2, the hexagonal structure inside the reverse-pushing screw 3 is screwed, the pin sleeve 1 is pushed out of the pressurizing block 2 by utilizing the thread reverse-pushing force between the reverse-pushing screw 3 and the metal guide post 4, and the separation of the pressurizing block and the shoulder of the blade is realized.

According to the invention, the pressurizing block 2 and the pin bush 1 are in clearance fit, so that the pin bush can be installed as long as being aligned, the pin bush can be placed in an integral die for molding after being installed, and once the assembly is placed in the die, the assembly is controlled by the size of the die and is automatically aligned, so that the final size of a product is ensured.

The structure is simple in feedback structure through field test, convenient to operate and high in practicability.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.