Rivet tenon structure for controlling fan impeller blade positioning
By adopting the mechanical structure of the rivet positioning method in impeller processing, the problems of large errors and low accuracy caused by the traditional positioning method are solved, the precise positioning and stability of the blades are achieved, and the quality of impeller products is improved.
Patent Information
- Application Number
- CN202421980716.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-15
AI Technical Summary
During the impeller processing, the traditional auxiliary line positioning method leads to large blade positioning errors and low finished product accuracy, which affects the impeller structural balance and product quality.
The rivet tenon positioning method of mechanical structure is adopted, and the positioning stability of the blade is enhanced through the insertion and coordination of the tenon of the blade and the rivet holes of the impeller bottom plate.
It improves the accuracy and stability of blade positioning, reduces the error of manual operation, and ensures the structural balance of the impeller and product quality.
Smart Images
Figure CN222910343U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of impeller processing, and particularly relates to a positioning riveting structure for controlling the blades of a fan impeller. Background Art
[0002] An impeller is an important component widely used in various mechanical equipment, mainly used to transfer the kinetic energy and static energy of a fluid, so that the fluid has pressure capacity, thereby realizing mechanical work. At present, a commonly used centrifugal impeller is composed of an impeller front disc, blades and an impeller bottom plate.
[0003] The blades are evenly welded between the impeller bottom plate and the impeller front disc. During assembly, the blades need to be evenly welded on the impeller bottom plate first. The traditional technique is to draw auxiliary lines on the impeller bottom plate for blade positioning. In the actual processing process, when manually positioning the blades relying on the auxiliary lines, the error is large, the finished product accuracy is low, which affects the structural balance of the impeller and reduces the product quality.
[0004] Therefore, this application provides a positioning riveting structure for controlling the blades of a fan impeller to meet the requirements. Summary of the Utility Model
[0005] The purpose of this application is to provide a positioning riveting structure for controlling the blades of a fan impeller, which uses a mechanical structure to position the blades and improves the assembly accuracy.
[0006] To achieve the above purpose, this application provides the following technical solution: A positioning riveting structure for controlling the blades of a fan impeller, comprising:
[0007] An impeller bottom plate, the impeller bottom plate is disc-shaped, a shaft hole is provided at the center of the impeller bottom plate, riveting holes are provided on the impeller bottom plate, the riveting holes are rectangular bodies, several of the riveting holes are in a group, and there are multiple groups of the riveting holes and they are annularly arranged around the center of the impeller bottom plate;
[0008] Blades, a tenon head is provided at the bottom of the blades, the tenon head is a rectangular block, and there are several tenon heads on each group of blades, the tenon head is inserted and matched with the riveting hole to position the blades, and a hoop groove is provided on one side of the blade close to the shaft hole, and the hoop groove is used to connect the blades together;
[0009] An auxiliary part, the auxiliary part limits the blades through the hoop groove, and enhances the stability of the blades after being inserted and positioned.
[0010] Preferably, each group of the riveting holes has three, each group of the blades has three tenon heads at the bottom, the tenon heads are evenly distributed at the bottom of the blades, and the size of the tenon head is smaller than the thickness of the blades.
[0011] Preferably, the auxiliary member includes an auxiliary base, an auxiliary cylinder, and a clamping block. One end of the auxiliary base is rotatably connected to the auxiliary cylinder, which is vertically arranged. A clamping block is provided on the outer side of the top of the auxiliary cylinder, and the clamping block is adapted to the hoop groove, which can limit the blade after the blade is inserted into the impeller bottom plate. The other end of the auxiliary base is connected with the clamping block at the bottom, and the clamping block and the auxiliary base cooperate to clamp the impeller bottom plate.
[0012] Preferably, a regulating bolt is threadedly connected to the other end of the auxiliary base. A bolt cap is provided on the top of the regulating bolt, and the bottom of the regulating bolt is rotatably connected to the clamping block, which is convenient for adjusting the clamping cooperation between the clamping block and the auxiliary base.
[0013] Preferably, a guiding strip is provided at the bottom of the auxiliary base, and a guiding groove is provided on the clamping block. The guiding groove is slidably connected to the guiding strip, and the positions of the clamping block and the auxiliary base correspond to each other, which can ensure the stability after clamping.
[0014] Preferably, the end of the clamping block is inclined upward, and a flat surface is provided at the top of the end of the clamping block to enhance the stability of clamping.
[0015] Preferably, a vertical plate is provided on the outer wall of the auxiliary cylinder for assisting the blade to be perpendicular to the impeller bottom plate.
[0016] In summary, the technical effects and advantages of the present utility model are as follows:
[0017] During the machining and assembly of the impeller of the present utility model, through the cooperation of the tenon and the rivet hole, the blade can be inserted into the impeller bottom plate for positioning. The positioning is accurate, the operation is simple, and the positioning effect of the blade is more stable, ensuring the structural balance of the impeller. By using a mechanical structure for positioning, the error of manual operation can be reduced, and the quality of the impeller product can be improved.
[0018] In the present utility model, an auxiliary member is also used to clamp and fix on the impeller bottom plate, and the hoop groove on the blade is used to limit the blade, which can limit the blade during positioning and further enhance the stability during blade positioning. The vertical plate on the auxiliary cylinder is used to fit with the blade to perform auxiliary positioning in the vertical direction of the blade, further improving the accuracy of blade assembly and the quality of the impeller product. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0020] Figure 1 Schematic diagram of the overall structure of the present utility model Figure 1 ;
[0021] Figure 2 Enlarged schematic diagram of the structure at position A of the present utility model;
[0022] Figure 3 Schematic diagram of the overall structure of the present utility model Figure 2 ;
[0023] Figure 4 Enlarged schematic diagram of the structure at position B of the present utility model;
[0024] Figure 5 Top view schematic diagram of the impeller bottom plate of the present utility model;
[0025] Figure 6 Schematic diagram of the blade structure of the present utility model;
[0026] Figure 7 Schematic diagram of the structure of the auxiliary part of the present utility model.
[0027] In the figure: 1. Impeller bottom plate; 2. Blade; 3. Auxiliary seat; 4. Auxiliary cylinder; 5. Adjusting bolt; 6. Clamping block; 10. Shaft hole; 11. Riveting hole; 20. Hoop groove; 21. Tenon; 30. Guide strip; 40. Block; 41. Vertical plate; 50. Bolt cap; 60. Guide groove. Specific embodiments
[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. 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.
[0029] Embodiment: Refer to Figure 1-7 A control fan impeller blade positioning riveting and tenoning structure shown, including:
[0030] A disc-shaped impeller bottom plate 1, a shaft hole 10 is provided at the center of the impeller bottom plate 1, and riveting holes 11 are provided on the impeller bottom plate 1. The riveting holes 11 are rectangular holes, and three riveting holes 11 are in a group. There are multiple groups of riveting holes 11 and they are annularly arranged around the center of the impeller bottom plate 1;
[0031] Blades 2, three rectangular tenons 21 are provided at the bottom of the blades 2, the tenons 21 are inserted and matched with the riveting holes 11, and a hoop groove 20 is provided on one side of the blades 2 close to the shaft hole 10;
[0032] An auxiliary part, and the auxiliary part limits the blades 2 through the hoop groove 20.
[0033] As an implementation manner in this embodiment, to facilitate the insertion and combination of the blade 2 and the impeller bottom plate 1, as Figure 6 shown, the tenons 21 are evenly distributed at the bottom of the blade 2, and the size of the tenons 21 is smaller than the thickness of the blade 2.
[0034] As an implementation manner in this embodiment, to enhance the stability of the blade 2 after positioning, as Figure 2 、 Figure 4 、 Figure 7 shown, the auxiliary member includes an auxiliary seat 3, an auxiliary cylinder 4, and a clamping block 6. One end of the auxiliary seat 3 is rotatably connected to the auxiliary cylinder 4, the auxiliary cylinder 4 is vertically arranged, a clamping block 40 is arranged on the outer side of the top of the auxiliary cylinder 4, the clamping block 40 is adapted to the hoop groove 20, and the other end of the auxiliary seat 3 is connected with a clamping block 6 at the bottom, and the clamping block 6 and the auxiliary seat 3 cooperate to clamp the impeller bottom plate 1.
[0035] As an implementation manner in this embodiment, to facilitate the adjustment of the clamping state of the auxiliary member, as Figure 2 、 Figure 4 、 Figure 7 shown, a regulating bolt 5 is threadedly connected to the other end of the auxiliary seat 3, a bolt cap 50 is arranged on the top of the regulating bolt 5, and the bottom of the regulating bolt 5 is rotatably connected to the clamping block 6.
[0036] As an implementation manner in this embodiment, to guide the clamping block 6, as Figure 2 、 Figure 4 、 Figure 7 shown, a guiding strip 30 is arranged at the bottom of the auxiliary seat 3, a guiding groove 60 is arranged on the clamping block 6, the guiding groove 60 is slidably connected with the guiding strip 30, and the clamping block 6 is located directly below the auxiliary seat 3.
[0037] As an implementation manner in this embodiment, to ensure the clamping stability of the clamping block 6, as Figure 4 、 Figure 7 shown, the end of the clamping block 6 is inclined upward, and a plane is arranged at the top of the end of the clamping block 6.
[0038] As an implementation manner in this embodiment, to facilitate the auxiliary blade 2 to maintain a vertical state, as Figure 2 、 Figure 7 shown, a vertical plate 41 is arranged on the outer wall of the auxiliary cylinder 4.
[0039] The working principle of this utility model: During assembly, insert the tenon 21 at the bottom of the blade 2 into the corresponding riveting hole 11 on the impeller bottom plate 1, and the blade 2 can be positioned on the impeller bottom plate 1 for welding. When the rectangular tenon 21 is inserted into the riveting hole 11 individually, the blade 2 can be aligned. The insertion of three groups of tenons 21 into the riveting holes 11 can enhance the stability of the blade 2. To further enhance the stability of the blade 2 on the impeller bottom plate 1, an auxiliary part can be used to assist in stabilizing the blade 2. First, pass the clamping block 6 through the shaft hole 10, and move the auxiliary part so that the impeller bottom plate 1 is located between the auxiliary seat 3 and the clamping block 6. Adjust the direction of the auxiliary seat 3 so that the auxiliary cylinder 4 is located on the side of the blade 2 close to the shaft hole 10. The clamping block 40 can be clamped with the hoop groove 20. Then, use the bolt cap 50 to rotate the adjusting bolt 5, driving the clamping block 6 to approach the auxiliary seat 3. The cooperation between the guiding strip 30 and the guiding groove 60 makes the orientation of the clamping block 6 stable until the clamping block 6 and the auxiliary seat 3 clamp and fix the impeller bottom plate 1. Thus, by using the clamping block 40 to be stuck in the hoop groove 20, the blade 2 is limited in the vertical direction, and the auxiliary cylinder 4 can be rotated. While keeping the clamping block 40 stuck in the hoop groove 20, make the vertical plate 41 contact the side of the blade 2, so as to assist in checking whether the blade 2 is in a vertical state. After determining the state of the blade 2, weld the contact edge between the blade 2 and the impeller bottom plate 1 together, and then assemble other blades 2 according to the above method.
[0040] The mechanical connection involved in this utility model is a common means adopted by those skilled in the art and can obtain technical inspiration through a limited number of tests, belonging to common general knowledge.
[0041] The components not described in detail in this article are prior art.
[0042] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A rivet structure for controlling the positioning of fan impeller blades, characterized in that: include: An impeller bottom plate (1), the impeller bottom plate (1) being in the shape of a disk, an axial hole (10) being provided at the center of the impeller bottom plate (1), a rivet hole (11) being provided on the impeller bottom plate (1), the rivet hole (11) being a rectangular hole, a plurality of the rivet holes (11) forming a group, and the rivet holes (11) being provided in a plurality of groups and forming a circular array around the center of the impeller bottom plate (1); Blades (2), wherein a tenon (21) is provided at the bottom of the blades (2), the tenon (21) is a rectangular block, and each group of blades (2) has a plurality of tenons (21), the tenons (21) are plug-fitted into the rivet holes (11), and a hoop groove (20) is provided on one side of the blades (2) close to the shaft hole (10); An auxiliary component, wherein the auxiliary component limits the position of the blade (2) through the hoop groove (20).
2. A rivet structure for controlling the positioning of fan impeller blades according to claim 1, characterized in that: Each group of rivet holes (11) has three, and each group of blades (2) has three tenons (21) at the bottom. The tenons (21) are evenly distributed at the bottom of the blades (2), and the size of the tenons (21) is smaller than the thickness of the blades (2).
3. A rivet structure for controlling the positioning of fan impeller blades according to claim 2, characterized in that: The auxiliary component comprises an auxiliary seat (3), an auxiliary cylinder (4), and a clamping block (6); one end of the auxiliary seat (3) is rotatably connected to the auxiliary cylinder (4); the auxiliary cylinder (4) is vertically arranged; a clamping block (40) is arranged on the outer side of the top of the auxiliary cylinder (4); the clamping block (40) is matched with the hoop groove (20); the bottom of the other end of the auxiliary seat (3) is connected to the clamping block (6); the clamping block (6) cooperates with the auxiliary seat (3) to clamp the impeller bottom plate (1).
4. A rivet structure for controlling the positioning of fan impeller blades according to claim 3, characterized in that: The other end of the auxiliary seat (3) is threadedly connected to an adjusting bolt (5), a bolt cap (50) is provided on the top of the adjusting bolt (5), and the bottom of the adjusting bolt (5) is rotatably connected to the clamping block (6).
5. A rivet structure for controlling the positioning of fan impeller blades according to claim 4, characterized in that: A guide strip (30) is provided at the bottom of the auxiliary seat (3), a guide groove (60) is provided on the clamping block (6), the guide groove (60) is slidably connected to the guide strip (30), and the position of the clamping block (6) corresponds to that of the auxiliary seat (3).
6. A rivet structure for controlling the positioning of fan impeller blades according to claim 5, characterized in that: The end of the clamp block (6) is inclined upward, and a flat surface is provided on the top of the end of the clamp block (6).
7. The rivet structure for controlling the positioning of fan impeller blades according to claim 3, characterized in that: A vertical plate (41) is provided on the outer wall of the auxiliary cylinder (4).