Positioning pin
By designing the arc-shaped groove-breaking part and marking holes of the positioning pins, the problem of high friction when stacking silicon steel sheets is solved, and a more efficient stacking process is achieved.
Patent Information
- Application Number
- CN202422382573.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-27
AI Technical Summary
In the prior art, when stacking silicon steel sheets, the friction between the positioning pins and the silicon steel sheets is relatively large, resulting in the failure of the silicon steel sheets to fall smoothly, affecting the stacking efficiency.
A positioning pin is designed, and the surface of its pin body is equipped with an arc-shaped groove-deficient part and a marking hole. The groove-deficient part reduces the contact area with the holes of the silicon steel sheet, and the marking holes are easy to distinguish by spraying black matte paint.
By reducing friction and improving position resolution, the positioning pin can avoid the situation where the silicon steel sheet cannot be placed and improve stacking efficiency.
Smart Images
Figure CN223019151U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of generator stator production, and more specifically, to a positioning pin. Background Art
[0002] A wind turbine is composed of a machine head, a rotating body, a tail fin, and blades. Each part is very important, and the functions of each part are as follows: The blades are used to receive wind power and convert it into electrical energy through the machine head; the tail fin enables the blades to always face the direction of the incoming wind to obtain the maximum wind energy; the rotating body enables the machine head to rotate flexibly to achieve the function of adjusting the direction of the tail fin; the rotor of the machine head is a permanent magnet, and the stator winding cuts the magnetic force line to generate electrical energy. Moreover, the stator of the wind turbine is formed by stacking and pressing a plurality of silicon steel sheets cut integrally. The silicon steel sheet is a silicon steel thin sheet with a silicon content of 0.5-4.5% and a thickness generally below 1 mm. The silicon steel sheet is mainly used to make the iron cores of various transformers, motors, and generators. When making the iron cores of transformers, motors, and generators, it is necessary to stack the silicon steel sheets together for use as the iron core. During stacking, it is required that the silicon steel sheets overlap vertically and the positioning is accurate to meet the production requirements.
[0003] In the prior art, when stacking silicon steel sheets, positioning pins with a flat or cylindrical head are usually used. Such a design will cause the silicon steel sheets of the wind power generation stator to not be able to be successfully positioned due to the large friction force between the silicon steel sheets and the positioning pins, resulting in the need to continuously correct the position when stacking the silicon steel sheets, wasting a lot of time and affecting the stacking efficiency. Summary of the Utility Model
[0004] To make up for the above deficiencies, the utility model provides a positioning pin that overcomes the above technical problems or at least partially solves the above problems.
[0005] The utility model is implemented as follows:
[0006] The utility model provides a positioning pin, which includes a mounting base. A support platform is installed on the top of the mounting base, and a pin body is installed on the top of the support platform. The top surface of the pin body is arc-shaped. A notch portion is provided on the surface of the pin body, and a marking hole is provided at the top of the pin body.
[0007] In a preferred embodiment, the inner cavity of the marking hole is sprayed with black matte paint, and the black matte paint has a color difference from the pin body.
[0008] In a preferred embodiment, a groove is provided at the bottom of the pin body, and the surface of the groove is arc-shaped.
[0009] In a preferred embodiment, a mounting hole is provided in the inner cavity of the groove, and a threaded groove is provided in the inner cavity of the mounting hole.
[0010] In a preferred embodiment, two sets of the notch portions are provided, respectively located on both sides of the pin body, and extension portions communicating with the notch portions are provided on both sides of the top of the pin body surface.
[0011] In a preferred embodiment, six sets of the notch portions are provided, evenly distributed on the surface of the pin body, and six sets of extension portions communicating with the notch portions are provided on the top of the pin body surface.
[0012] A positioning pin provided by the present utility model has the following beneficial effects:
[0013] 1. By providing the notch portions, the contact area with the holes of the silicon steel sheet can be reduced after the notch portions are opened, thereby reducing the friction force between the silicon steel sheet and the pin body, and thus avoiding the situation that the silicon steel sheet cannot be positioned due to large friction.
[0014] 2. By providing the marking holes, the top of the pin body can be marked by spraying black matte paint in the inner cavity of the marking holes, which is convenient for identifying the position of the pin body and avoiding the silicon steel sheet from not being able to align with the pin body due to environmental and light influences. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 is the overall three-dimensional view provided by the embodiment of the present utility model;
[0017] Figure 2 is the three-dimensional structure diagram of the pin body of Embodiment 1 provided by the embodiment of the present utility model;
[0018] Figure 3 is the three-dimensional side view structure diagram of the pin body of Embodiment 1 provided by the embodiment of the present utility model;
[0019] Figure 4 is the three-dimensional structure diagram of the pin body of Embodiment 2 provided by the embodiment of the present utility model;
[0020] Figure 5 is the three-dimensional side view structure diagram of the pin body of Embodiment 2 provided by the embodiment of the present utility model;
[0021] In the figure: 1, mounting base; 2, support platform; 3, pin body; 4, notch portion; 5, marking hole; 6, groove; 7, mounting hole; 8, extension portion. Specific Embodiments
[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0023] Refer to Figures 1-5 , the present utility model provides a technical solution: a positioning pin, including a mounting base 1, a support platform 2 is mounted on the top of the mounting base 1, and a pin body 3 is mounted on the top of the support platform 2. The top surface of the pin body 3 is arc-shaped, a notch portion 4 is provided on the surface of the pin body 3, a marking hole 5 is provided on the top of the pin body 3, and black matte paint is sprayed in the inner cavity of the marking hole 5. The black matte paint has a color difference from the pin body 3. After the pin body 3 is installed, silicon steel sheets can be passed through the pin body 3 and stacked on the support platform 2. The notch portion 4 provided on the surface of the pin body 3 can reduce the contact area with the holes of the silicon steel sheets, thereby reducing the friction force between the silicon steel sheets and the pin body 3, and thus avoiding the situation where the silicon steel sheets cannot be positioned due to excessive friction. Moreover, by spraying black matte paint in the marking hole 5, the top of the pin body 3 can be marked, which is convenient for identifying the position of the pin body 3 and avoiding the silicon steel sheets being unable to align with the pin body 3 due to environmental and light influences.
[0024] Refer to Figures 1-5 , in a preferred embodiment, a groove 6 is provided at the bottom of the pin body 3. The surface of the groove 6 is arc-shaped, and a mounting hole 7 is provided in the inner cavity of the groove 6. A threaded groove is provided in the inner cavity of the mounting hole 7, which can align the groove 6 with the threaded mounting portion on the support platform 2 for mounting the pin body 3. Then, it is convenient to insert the threaded mounting portion into the mounting hole 7, and by rotating the pin body 3, the threaded groove in the mounting hole 7 is threadedly connected to the threaded mounting portion, thus facilitating the installation of the pin body 3.
[0025] Example 1
[0026] Refer to Figures 2-3, in a preferred embodiment, two sets of notch portions 4 are provided, respectively located on both sides of the pin body 3, and extension portions 8 communicating with the notch portions 4 are provided on both sides of the top surface of the pin body 3. By providing two sets of notch portions 4, the contact area between the silicon steel sheet and the pin body 3 can be reduced. At the same time, the two sets of notch portions 4 can reduce the contact area without affecting the diameter of the pin body 3. The pin body 3 provided with two sets of notch portions 4 still retains a relatively large area of the arc portion, so that there is still an appropriate amount of friction and contact area when stacking the silicon steel sheets, and thus it can be applied to novices to stack the silicon steel sheets. Moreover, the extension portion 8 can eliminate the corners existing after the notch portions 4 are provided, thereby facilitating the more smooth stacking of the silicon steel sheets.
[0027] Embodiment 2
[0028] Refer to Figures 4-5 , in a preferred embodiment, six sets of notch portions 4 are provided, evenly distributed on the surface of the pin body 3, and six sets of extension portions 8 communicating with the notch portions 4 are provided on the top surface of the pin body 3. By providing six sets of notch portions 4, the contact area between the silicon steel sheet and the pin body 3 can be greatly reduced, so that the pin body 3 can fall more smoothly after passing through the holes in the silicon steel sheet, thereby improving the stacking speed of the silicon steel sheets. Moreover, the extension portion 8 can eliminate the corners existing after the notch portions 4 are provided, thereby facilitating the more smooth stacking of the silicon steel sheets.
[0029] Specifically, the working process or working principle of the positioning pin is as follows: during use, align the mounting hole 7 at the bottom of the pin body 3 with the threaded mounting portion on the support table 2, and rotate the pin body 3 to threadedly connect the threaded mounting portion with the threaded groove in the inner cavity of the mounting hole 7 to install the pin body 3. When stacking the silicon steel sheets, align the holes in the silicon steel sheets with the pin body 3, and then the silicon steel sheets can be stacked. The notch portions 4 provided on the surface of the pin body 3 can reduce the contact area with the holes in the silicon steel sheets, thereby reducing the friction between the silicon steel sheets and the pin body 3, and thus facilitating the stacking of the silicon steel sheets. Moreover, the black matte paint sprayed in the inner cavity of the marking hole 5 can help the user align the holes in the silicon steel sheets with the pin body 3, thereby facilitating the stacking of the silicon steel sheets.
Claims
1. A positioning pin, comprising a mounting seat (1), characterized in that: A support platform (2) is installed on the top of the mounting seat (1), and a pin body (3) is installed on the top of the support platform (2). The top of the surface of the pin body (3) is arranged in an arc shape, a notch portion (4) is provided on the surface of the pin body (3), and a marking hole (5) is provided on the top of the pin body (3).
2. A positioning pin according to claim 1, characterized in that: The inner cavity of the marking hole (5) is sprayed with black matte paint.
3. A positioning pin according to claim 1, characterized in that: The bottom of the pin body (3) is provided with a groove (6), and the surface of the groove (6) is arranged in an arc shape.
4. A positioning pin according to claim 3, characterized in that: The inner cavity of the groove (6) is provided with a mounting hole (7), and the inner cavity of the mounting hole (7) is provided with a threaded groove.
5. A positioning pin according to claim 1, characterized in that: The notch portions (4) are provided with two groups, which are respectively located on both sides of the pin body (3), and both sides of the top of the surface of the pin body (3) are provided with extension portions (8) which are connected with the notch portions (4).
6. A positioning pin according to claim 1, characterized in that: The notch portions (4) are provided with six groups, which are evenly distributed on the surface of the pin body (3); and the top of the surface of the pin body (3) is provided with six groups of extension portions (8) which are connected to the notch portions (4).