Fan impeller shaft core assembling jig

Abstract

The utility model discloses a fan impeller shaft core assembling jig which comprises a lower die fixing plate, a lower die push plate and an upper die push plate which are distributed from bottom to top, the lower die push plate is provided with an outer supporting head which is distributed in an upward protruding mode and used for buckling a fan impeller, and the top wall of the fan impeller is provided with a shaft hole used for installing a shaft core. The outer supporting head is provided with a vertically-through shaft core assembling channel. A first pressing block used for pushing the fan impeller downwards is arranged on the lower surface of the upper die push plate. The lower die fixing plate is provided with a supporting column in sliding connection with the shaft core assembling channel, a positioning hole used for containing a shaft core is formed in the top of the supporting column, and the outer supporting head and the positioning hole are coaxially distributed. A reset spring is arranged between the lower die push plate and the lower die fixing plate, and a die opening and closing guide mechanism is connected between the upper die push plate and the lower die push plate. According to the utility model, the fan impeller and the shaft core are respectively placed by arranging the outer supporting head and the supporting column, and automatic alignment assembly is realized by utilizing the action of upper and lower die assembly, so that the assembly precision and efficiency are greatly improved, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine shaft assembly technology, and in particular to a wind turbine impeller shaft assembly fixture. Background Technology

[0002] like Figure 12 As shown, after the metal blades of the axial flow cooling fan are welded and fixed, a shaft core needs to be inserted and fixed. The current practice is to manually clamp the shaft core to the fan impeller, which has problems such as low installation accuracy, easy to install crookedly, and the shaft core being inserted too long or too short.

[0003] Therefore, there is an urgent need for a device that can facilitate the quick and precise assembly of wind turbine impellers and shafts. Utility Model Content

[0004] The purpose of this utility model is to provide a fan impeller shaft assembly fixture, which uses an external support head and a support column to place the fan impeller and shaft core respectively, and uses the action of upper and lower mold closing to achieve automatic alignment and pressing assembly, thus effectively solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fan impeller shaft assembly fixture includes a lower mold fixing plate, a lower mold push plate, and an upper mold push plate distributed from bottom to top. The lower mold push plate has an upwardly protruding outer support head for fastening the fan impeller. The top wall of the fan impeller has a shaft hole for installing the shaft core. The outer support head has a shaft core assembly channel that runs vertically through the fan impeller. The lower surface of the upper mold push plate has a first pressing block for pushing the fan impeller downward. The lower mold fixing plate has a support column that is slidably connected to the shaft core assembly channel. The top of the support column has a positioning hole for placing the shaft core. The outer support head and the positioning hole are coaxially distributed. A return spring is provided between the lower mold push plate and the lower mold fixing plate. An opening and closing mold guide mechanism is connected between the upper mold push plate and the lower mold push plate.

[0007] Furthermore, the sidewall of the positioning hole is provided with an air guide groove extending in the vertical direction.

[0008] Furthermore, the mold opening and closing guiding mechanism includes a pull rod, an upper guide pin fixedly connected to the side wall of the upper mold push plate, and a lower guide pin fixedly connected to the side wall of the lower mold push plate. The upper part of the pull rod is provided with a first guide slot that is slidably connected to the upper guide pin, and the lower part of the pull rod is provided with a second guide slot that is slidably connected to the lower guide pin. Both the first guide slot and the second guide slot are distributed along the length direction of the pull rod.

[0009] Furthermore, the lower mold fixing plate is provided with a first limiting pull stud that is vertically distributed upwards, and the lower mold push plate is provided with a first through hole that is slidably connected to the first limiting pull stud.

[0010] Furthermore, the lower mold fixing plate is provided with vertically upward distributed lower guide posts, and the lower mold push plate and the upper mold push plate are respectively provided with first guide sleeves that are slidably connected to the lower guide posts.

[0011] Furthermore, the lower mold fixing plate is provided with a spring mounting post for sleeved with the reset spring, and the lower mold push plate is provided with a second through hole that is slidably connected to the spring mounting post.

[0012] Furthermore, the outer support head includes a fixed disk and several circumferentially distributed claws. The lower part of each claw is fixedly connected to the fixed disk. The shaft core assembly channel is formed by the claws. There is a gap between two adjacent claws. The outer side wall of the claw away from the fixed disk is provided with a protrusion. The diameter of the shaft core assembly channel near the protrusion is smaller than the diameter of the shaft core assembly channel near the fixed disk.

[0013] Furthermore, an upper mold fixing plate is provided above the upper mold push plate, and a second pressing block is provided on the lower surface of the upper mold fixing plate for pushing the upper mold push plate downward.

[0014] Furthermore, the upper mold fixing plate is provided with a second limiting pull stud distributed vertically downwards, and the upper mold push plate is provided with a third through hole that is slidably connected to the second limiting pull stud; the upper mold fixing plate is provided with an upper guide post distributed vertically downwards, and the upper mold push plate is provided with a second guide sleeve that is slidably connected to the upper guide post.

[0015] Furthermore, a top plate is connected above the upper mold fixing plate, and a bottom plate is connected below the lower mold fixing plate.

[0016] Compared with the prior art, this utility model provides a fan impeller shaft assembly fixture, which has the following beneficial effects:

[0017] This invention uses an external support head and a support column to hold the fan impeller and shaft core respectively. It utilizes the action of the upper and lower molds to achieve automatic alignment and pressing assembly, so that the shaft core is accurately inserted into the shaft hole on the fan impeller, which greatly improves the assembly accuracy and efficiency, thereby improving the quality of the finished fan. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention in the open state;

[0020] Figure 2 This is a half-sectional view of the present invention in the open state;

[0021] Figure 3 This is an assembly diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the assembly of the lower mold push plate, the lower mold fixing plate, and the base plate;

[0023] Figure 5 This is a top view of the lower mold ejector plate;

[0024] Figure 6 This is a schematic diagram of the assembly of the upper mold push plate, the upper mold fixing plate, and the top plate;

[0025] Figure 7 This is a bottom view of the upper mold ejector plate;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the external support head;

[0027] Figure 9 This is a three-dimensional structural diagram of the present invention in the closed state;

[0028] Figure 10 This is a half-section structural diagram of the present invention in the closed state;

[0029] Figure 11 for Figure 10 Enlarged view of point A in the middle;

[0030] Figure 12 This is a schematic diagram of the assembly of the shaft core and the fan impeller.

[0031] Reference numerals: 1. Lower mold fixing plate; 11. Support column; 111. Positioning hole; 112. Air guide groove; 12. First limiting pull stud; 13. Lower guide column; 14. Spring mounting column; 2. Lower mold push plate; 21. Outer support head; 211. Fixing plate; 212. Claw; 213. Shaft core assembly channel; 214. Clearance; 215. Protrusion; 22. First through hole; 23. First guide sleeve; 24. Second through hole; 3. Upper mold push plate; 3 1. First pressure block; 32. Third through hole; 33. Second guide sleeve; 4. Return spring; 5. Mold opening and closing guide mechanism; 51. Pull rod; 511. First guide slot; 512. Second guide slot; 52. Upper guide pin; 53. Lower guide pin; 6. Upper mold fixing plate; 61. Second pressure block; 62. Second limit pull pin; 63. Upper guide post; 7. Top plate; 8. Bottom plate; 9. Fan impeller; 91. Shaft hole; 10. Shaft core. Detailed Implementation

[0032] The technical solution of this utility model will be clearly and completely described below through detailed embodiments and in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0033] Please refer to Figures 1-12 This embodiment provides a fan impeller shaft core assembly fixture, including a lower mold fixing plate 1, a lower mold push plate 2, and an upper mold push plate 3 distributed from bottom to top. The lower mold push plate 2 is provided with an upwardly protruding outer support head 21 for fastening the fan impeller 9. The top wall of the fan impeller 9 has a shaft hole 91 for installing the shaft core 10. The outer support head 21 has a shaft core assembly channel 213 that runs vertically through the fan impeller. The lower surface of the upper mold push plate 3 is provided with a first pressing block 31 for pushing the fan impeller 9 downward. The lower mold fixing plate 1 is provided with a support column 11 that is slidably connected to the shaft core assembly channel 213. The top of the support column 11 is provided with a positioning hole 111 for placing the shaft core 10. The outer support head 21 and the positioning hole 111 are coaxially distributed. A return spring 4 is provided between the lower mold push plate 2 and the lower mold fixing plate 1 for lifting the lower mold push plate 2 upward. An opening and closing mold guide mechanism 5 is connected between the upper mold push plate 3 and the lower mold push plate 2. In this way, by setting external support heads and support columns to place the fan impeller and shaft core respectively, and using the action of upper and lower mold closing to achieve automatic alignment and pressing assembly, the shaft core is accurately inserted into the shaft hole on the fan impeller, which greatly improves the assembly accuracy and efficiency, thereby improving the finished quality of the fan.

[0034] In some specific implementation methods, such as Figure 11As shown, to facilitate the quick insertion of the shaft core 10 into the positioning hole 111 on the support column 11, the side wall of the positioning hole 111 is provided with an air guide groove 112 extending in the vertical direction. Thus, when the shaft core 10 is inserted into the positioning hole 111, the air inside the positioning hole 111 can be quickly discharged outward through the air guide groove 112, thereby facilitating a more effortless continued insertion of the shaft core 10.

[0035] Specifically, as an example, the cross-sectional shape of the air guide groove 112 is semi-circular.

[0036] In some implementations, reference Figures 1-10 The mold opening and closing guide mechanism 5 includes a pull rod 51, an upper guide pin 52 fixedly connected to the side wall of the upper mold push plate 3, and a lower guide pin 53 fixedly connected to the side wall of the lower mold push plate 2. The upper part of the pull rod 51 has a first guide slot 511 slidably connected to the upper guide pin 52, and the lower part of the pull rod 51 has a second guide slot 512 slidably connected to the lower guide pin 53. Both the first guide slot 511 and the second guide slot 512 are distributed along the length of the pull rod 51. By pre-designing the stroke positions, in the closed state, the upper guide pin is distributed near the lower end of the first guide slot, and the lower guide pin is distributed near the upper end of the second guide slot; while in the open state, the upper guide pin is distributed near the upper end of the first guide slot, and the lower guide pin is distributed near the lower end of the second guide slot. Thus, during mold closing, the upper mold push plate is driven to move downwards, and the first pressure block installed on the upper mold push plate abuts and presses against the fan impeller, transmitting force to the lower mold push plate. This downward movement completes the insertion of the shaft core into the fan impeller's shaft hole. During mold opening, as the upper mold push plate moves upwards, the upper guide pins installed on the upper mold push plate slide to the upper end of the first guide slot, thereby driving the pull rod to continue moving upwards until the upper and lower mold push plates are fully opened. More specifically, the upper mold push plate 3 is symmetrically provided with four upper guide pins 52, two on each side; the lower mold push plate 2 is symmetrically provided with four lower guide pins 53, two on each side; and the pull rod 51 is provided with four, two on each side. This ensures a more balanced force distribution.

[0037] In some specific implementation methods, refer to Figures 3-5 The lower mold fixing plate 1 is provided with vertically upward-distributed first limiting pull studs 12, and the lower mold push plate 2 is provided with corresponding first through holes 22 that are slidably connected to the first limiting pull studs 12. By setting the first limiting pull studs, the height travel of the lower mold push plate being lifted upward by the reset spring can be controlled. As an example, more specifically, the number of first limiting pull studs 12 is four.

[0038] In some specific implementation methods, refer to Figures 3-5The lower mold fixing plate 1 is provided with vertically upward-distributed lower guide posts 13. The lower mold push plate 2 and the upper mold push plate 3 are respectively provided with first guide sleeves 23 that are slidably connected to the lower guide posts 13, thereby making the upper mold push plate and the lower mold push plate smoother during the mold opening and closing process and less prone to displacement or misalignment. As an example, more specifically, the number of lower guide posts 13 is four.

[0039] In some specific implementation methods, refer to Figures 3-5 The lower mold fixing plate 1 is provided with a spring mounting post 14 for sleeved with the reset spring 4, and the lower mold push plate 2 is provided with a second through hole 24 that is slidably connected with the spring mounting post 14. As an example, more specifically, there are four reset springs 4 and four spring mounting posts 14.

[0040] In some specific implementation methods, refer to Figure 8 The outer support head 21 includes a fixed disk 211 and a plurality of circumferentially arranged claws 212. The lower part of each claw 212 is fixedly connected to the fixed disk 211. The shaft core assembly channel 213 is formed by the claws 212. There is a gap 214 between two adjacent claws 212. The outer side wall of the claw 212 away from the fixed disk 211 is provided with a protrusion 215 for engaging the inner side wall of the fan impeller. The diameter of the shaft core assembly channel 213 near the protrusion 215 is smaller than the diameter of the shaft core assembly channel 213 near the fixed disk 211. Thus, during the mold closing process, as the lower mold push plate drives the outer support head to move downward continuously, on the one hand, under the pressing action of the first pressure block of the upper mold push plate, the shaft core placed on the support column is inserted into the shaft hole of the fan impeller. On the other hand, since the support column is inserted into the upper end of the shaft core assembly channel with a larger inner diameter, it can open up each claw outward, thereby enabling the claw to engage with the inner wall of the fan impeller.

[0041] In some implementations, reference Figures 1-3 , Figure 6 , Figure 7 , Figure 9 and Figure 10 An upper mold fixing plate 6 is provided above the upper mold push plate 3, and a second pressing block 61 for pushing the upper mold push plate 3 downward is provided on the lower surface of the upper mold fixing plate 6. In this way, the upper mold push plate can be pushed downward by the second pressing block installed on the upper mold fixing plate.

[0042] In some specific implementation methods, refer to Figure 3 , Figure 6 and Figure 7The upper mold fixing plate 6 is provided with vertically downward distributed second limiting pull studs 62, and the upper mold push plate 3 is provided with a corresponding third through hole 32 that is slidably connected to the second limiting pull studs 62. By providing the second limiting pull studs, the opening stroke of the upper mold push plate being pulled upward during the mold opening process can be controlled. The upper mold fixing plate 6 is provided with vertically downward distributed upper guide posts 63, and the upper mold push plate 3 is provided with a corresponding second guide sleeve 33 that is slidably connected to the upper guide posts 63, thereby making the upper mold push plate smoother during the mold opening and closing process and less prone to displacement or misalignment. As an example, more specifically, the number of second limiting pull studs 62 and upper guide posts 63 is four.

[0043] In some specific implementation methods, refer to Figures 1-3 , Figure 9 and Figure 10 A top plate 7 is connected above the upper mold fixing plate 6, and a bottom plate 8 is connected below the lower mold fixing plate 1. By connecting the top plate 7 to an external power drive device, the automatic mold opening and closing process is realized.

[0044] refer to Figure 1 and Figure 2 With the machine in the open position, first insert the shaft core 10 into the positioning hole 111 on the support column 11, then fasten the fan impeller 9 onto the outer support head 21, and start the machine to close the mold. (Reference) Figures 9-11 During mold closing, the second pressure block 61 fixed to the upper mold fixing plate 6 pushes the upper mold push plate 3 downward. As the upper mold push plate 3 moves downward, the first pressure block 31 installed on the upper mold push plate 3 abuts against and presses the fan impeller 9 until the fan impeller 9 is completely nested on the outer support head 21 and the lower surface of the fan impeller 9 abuts against the upper surface of the fixing plate 211 of the outer support head 21. This transmits force to the lower mold push plate 2, thereby completing the insertion of the shaft core 10 into the shaft hole 91 of the fan impeller 9 during the downward movement, completing the assembly of the shaft core 10 and the fan impeller 9. Afterward, refer to... Figure 1 and Figure 2 The upper mold plate 7 is driven upward to open the mold. As the upper mold fixing plate 6 moves upward, the upper mold push plate 3 is pulled upward by the second limiting pull pin 62. At the same time, the lower mold push plate 2 is also lifted upward by the elastic force of the return spring 4 until it is hooked by the first limiting pull pin 12. As the upper mold push plate 3 moves upward, the upper guide pin 52 installed on the upper mold push plate 3 slides to the upper end of the first guide slot 511, which will drive the pull rod 51 to continue to move upward until the upper mold push plate 3 and the lower mold push plate 2 are fully opened, so as to facilitate the removal of the fan impeller 9 with the assembled shaft core 10. In this way, the fan impeller and shaft core are assembled by continuous cycle operation.

[0045] The above embodiments are merely illustrative of the concept and technical solution of this utility model, and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A jig for assembling a wind turbine impeller shaft core, comprising a lower mold fixing plate, a lower mold push plate, and an upper mold push plate distributed from bottom to top, characterized in that, The lower mold push plate is provided with upwardly protruding outer support heads for fastening the fan impeller. The top wall of the fan impeller has a shaft hole for installing the shaft core. The outer support head has a shaft core assembly channel that runs vertically through the fan impeller. The lower surface of the upper mold push plate is provided with a first pressure block for pushing the fan impeller downward. The lower mold fixing plate is provided with a support column that is slidably connected to the shaft core assembly channel. The top of the support column is provided with a positioning hole for placing the shaft core. The outer support head and the positioning hole are coaxially distributed. A return spring is provided between the lower mold push plate and the lower mold fixing plate. An opening and closing mold guide mechanism is connected between the upper mold push plate and the lower mold push plate.

2. The fan impeller shaft assembly fixture according to claim 1, characterized in that, The sidewall of the positioning hole is provided with an air guide groove extending in the vertical direction.

3. The fan impeller shaft assembly fixture according to claim 1, characterized in that, The mold opening and closing guiding mechanism includes a pull rod, an upper guide pin fixedly connected to the side wall of the upper mold push plate, and a lower guide pin fixedly connected to the side wall of the lower mold push plate. The upper part of the pull rod has a first guide slot that is slidably connected to the upper guide pin, and the lower part of the pull rod has a second guide slot that is slidably connected to the lower guide pin. Both the first guide slot and the second guide slot are distributed along the length direction of the pull rod.

4. The fan impeller shaft assembly fixture according to claim 3, characterized in that, The lower mold fixing plate is provided with a first limiting pull stud that is vertically distributed upwards, and the lower mold push plate is provided with a first through hole that is slidably connected to the first limiting pull stud.

5. The fan impeller shaft assembly fixture according to claim 4, characterized in that, The lower mold fixing plate is provided with vertically upward distributed lower guide columns, and the lower mold push plate and the upper mold push plate are respectively provided with a first guide sleeve that is slidably connected to the lower guide columns.

6. The fan impeller shaft assembly fixture according to claim 1, characterized in that, The lower mold fixing plate is provided with a spring mounting post for sleeved with the reset spring, and the lower mold push plate is provided with a second through hole that is slidably connected to the spring mounting post.

7. The fan impeller shaft assembly fixture according to claim 1, characterized in that, The outer support head includes a fixed disk and several circumferentially arranged claws. The lower part of each claw is fixedly connected to the fixed disk. The shaft core assembly channel is formed by the claws. There is a gap between two adjacent claws. The outer side wall of the claw away from the fixed disk is provided with a protrusion. The diameter of the shaft core assembly channel near the protrusion is smaller than the diameter of the shaft core assembly channel near the fixed disk.

8. The fan impeller shaft assembly fixture according to any one of claims 1 to 7, characterized in that, An upper mold fixing plate is provided above the upper mold push plate, and a second pressing block is provided on the lower surface of the upper mold fixing plate for pushing the upper mold push plate downward.

9. The fan impeller shaft assembly fixture according to claim 8, characterized in that, The upper mold fixing plate is provided with a second limiting pull stud distributed vertically downwards, and the upper mold push plate is provided with a third through hole that is slidably connected to the second limiting pull stud; the upper mold fixing plate is provided with an upper guide post distributed vertically downwards, and the upper mold push plate is provided with a second guide sleeve that is slidably connected to the upper guide post.

10. The fan impeller shaft assembly fixture according to claim 8, characterized in that, A top plate is connected above the upper mold fixing plate, and a bottom plate is connected below the lower mold fixing plate.

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