Integral casting mold for high-precision wind power generation gearbox

Abstract

The utility model relates to a high-precision integral casting mould for a wind power generation gearbox, which belongs to the technical field of gearbox casting and comprises a fixing seat, a lower mould body is fixedly mounted at the top of the fixing seat, and a mould groove for forming the appearance of the wind power generation gearbox is arranged at the top of the lower mould body. The top of the fixing base is provided with a die assembly assembly used for die casting, and the top of the fixing base is provided with an ejection assembly located in the lower die body. The ejection assembly comprises a mounting groove formed in the bottom of the lower die body, a hydraulic rod fixedly mounted on the inner side of the mounting groove, telescopic rods fixedly mounted on the top of the fixing base and evenly distributed, a fixing plate fixedly mounted on an output shaft of the hydraulic rod and a plurality of mounting cylinders fixed to the top of the fixing plate, and the tops of the mounting cylinders are open. According to the high-precision integral casting mold for the wind power generation gearbox, the demolding work convenience can be further improved, and meanwhile, a demolded workpiece can be conveniently taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of gearbox casting, in particular to an integral casting mold for a high-precision wind power gearbox. Background Technique

[0002] Casting refers to a processing method in which solid metal is melted into a liquid state and poured into a mold with a specific shape, and then solidified. The materials of ordinary molds are green sand, clay, water glass, resin and other auxiliary materials. The molds for special casting include investment casting, lost foam casting, permanent mold casting, ceramic mold casting, etc.

[0003] According to a high-precision gearbox mold disclosed in Chinese Patent Publication No. CN220612209U, through the combined use of a limit post and a limit sleeve, the upper mold and the lower mold can be clamped with higher precision, thus achieving the effect of improving precision. And through the arrangement of ejector rods, ejector blocks and an ejector plate, it is also convenient to demold, so that the formed workpiece can be easily removed. However, there are still some deficiencies in the actual use of this patent. Since the limit posts are arranged around the lower mold, the workpiece inside the lower mold is easily restricted when being removed. At the same time, when this patent is applied to workpieces with irregular shapes such as wind turbine gearboxes, since the ejector plate needs to match the shape of the workpiece, it will be in contact with the outer surface of the workpiece. After the workpiece is ejected by the ejector plate, the contact area between the ejector plate and the workpiece is too large, and the surface of the irregular workpiece will further increase the contact area, resulting in a large amount of labor required to remove the workpiece from the top of the ejector plate, which is not conducive to the demolding work. Therefore, this application provides an integral casting mold for a high-precision wind power gearbox to solve the above problems. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides an integral casting mold for a high-precision wind power gearbox, which has the advantages of further improving the convenience of demolding work and facilitating the removal of the demolded workpiece. It solves the problem that when the existing high-precision gearbox mold is applied to workpieces with irregular shapes such as wind turbine gearboxes, the contact area between the ejection structure and the workpiece surface is too large, which is not conducive to the demolding work.

[0006] (2) Technical Solutions

[0007] To achieve the purpose of further improving the convenience of demolding work and facilitating the removal of the workpiece after demolding, the present utility model provides the following technical solution: a high-precision integral casting mold for a wind power gearbox, including a fixed seat, on the top of which a lower mold body is fixedly installed. A mold groove for forming the outer shape of the wind power gearbox is opened on the top of the lower mold body. A mold closing assembly for die casting is installed on the top of the fixed seat, and an ejection assembly located inside the lower mold body is installed on the top of the fixed seat.

[0008] The ejection assembly includes an installation groove opened at the bottom of the lower mold body, a hydraulic rod fixedly installed inside the installation groove, telescopic rods fixedly installed on the top of the fixed seat and evenly distributed, a fixing plate fixedly installed on the output shaft of the hydraulic rod, a plurality of installation cylinders fixedly installed on the top of the fixing plate and having an open top, ejection rods inserted inside the installation cylinders, bolts passing through the outside between the installation cylinders and the corresponding ejection rods, and nuts threadedly connected to the outside of the bolts and abutting against the outside of the corresponding installation cylinders.

[0009] Furthermore, the mold closing assembly includes two support columns fixed on the top of the fixed seat, a support plate fixed between the tops of the two support columns, a sliding cylinder fixed on the top of the support plate, a sliding rod slidably connected inside the sliding cylinder, an upper mold body fixed between the bottoms of the two sliding rods, a hydraulic cylinder passing through and fixedly installed on the top of the support plate, a feeding pipe fixed on the top of the upper mold body, four mold closing blocks fixedly installed on the top of the lower mold body and evenly distributed, and four mold closing grooves opened at the bottom of the upper mold body for the four mold closing blocks to be inserted respectively.

[0010] Furthermore, two groups of heat dissipation fins are fixedly connected to the outside of the lower mold body except for one side of the front. A heat dissipation fan is fixedly installed between the sides of each group of heat dissipation fins away from the lower mold body. An installation cavity is opened inside the lower mold body, and a heating pipe is fixedly installed inside the installation cavity.

[0011] Furthermore, the number of each group of heat dissipation fins is at least four. The heating pipes are arranged outside the ejection rods and do not contact the outside of the ejection rods.

[0012] Furthermore, the end of the sliding rod sequentially penetrates the corresponding sliding cylinder and the support plate. The output shaft of the hydraulic cylinder is fixedly connected to the top of the upper mold body. A feeding hole communicating with the inside of the feeding pipe is opened at the bottom of the upper mold body. The top and bottom of the feeding pipe are both open. The position of the upper mold body corresponds to the position of the lower mold body.

[0013] Furthermore, one side of the front of the installation groove is open. A baffle located on the front side of the installation groove is detachably connected to the front of the lower mold body. A placement groove for inserting and installing the hydraulic rod is opened on the top of the fixed seat.

[0014] Furthermore, the end of the telescopic rod is fixedly connected to the bottom of the fixed plate. The end of the ejector rod penetrates through the inside of the lower die body and extends into the inside of the die cavity. The top end of the ejector rod matches the inner bottom wall of the die cavity.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present utility model provides an integral casting mold for a high-precision wind power gearbox, which has the following beneficial effects:

[0017] For this integral casting mold for a high-precision wind power gearbox, through the cooperation of the lower die body on the top of the fixed seat, the die closing assembly and the ejecting assembly, it can further improve the convenience of the demolding work and facilitate the removal of the workpiece after demolding. By converting the surface of the ejecting structure into individual points and then utilizing the supporting structure features distributed in a dot pattern, the workpiece can be stably ejected. At the same time, it also reduces the difficulty of the formed workpiece being completely separated, enabling the finished workpiece of the wind power gearbox to be conveniently removed, thereby enhancing the practicality of the casting mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present utility model;

[0019] Figure 2 It is a front view of the structure of the present utility model;

[0020] Figure 3 It is the structure of the present utility model Figure 1 Partial enlarged schematic diagram of part A in the structure;

[0021] Figure 4 It is an external three-dimensional schematic diagram of the connection structure of the lower die body in the structure of the present utility model.

[0022] In the figure: 1 fixed seat, 2 lower die body, 300 die closing assembly, 301 support column, 302 support plate, 303 sliding cylinder, 304 sliding rod, 305 upper die body, 306 hydraulic cylinder, 307 injection pipe, 308 die closing block, 309 die closing groove, 401 heat dissipation fin, 402 heat dissipation fan, 403 heating pipe, 500 ejecting assembly, 501 installation groove, 502 hydraulic rod, 503 telescopic rod, 504 fixed plate, 505 installation cylinder, 506 ejector rod, 507 bolt, 508 nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model 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.

[0024] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a high-precision integral casting mold for a wind power generation gearbox, including a fixed seat 1, a lower mold body 2 fixedly installed on the top of the fixed seat 1, a mold groove for forming the outer shape of the wind power generation gearbox is opened on the top of the lower mold body 2, a mold closing assembly 300 for die casting is installed on the top of the fixed seat 1, and an ejection assembly 500 located inside the lower mold body 2 is installed on the top of the fixed seat 1; through the combined use of the lower mold body 2 on the top of the fixed seat 1, the mold closing assembly 300 and the ejection assembly 500, the convenience of the demolding work can be further improved, and at the same time, it is convenient to take out the workpiece after demolding. By converting the surface of the ejection structure into individual points and then using the support structure features distributed in a dot pattern, the workpiece can be stably ejected, and at the same time, the difficulty of the formed workpiece being completely separated is reduced, so that the finished workpiece of the wind power generation gearbox can be conveniently taken out, thereby improving the practicability of the casting mold.

[0025] In this embodiment, the ejection assembly 500 is a structure for facilitating the ejection of the workpiece formed by the wind power generation gearbox to demold it.

[0026] As Figure 1 , Figure 3 and Figure 4 shown, the ejection assembly 500 includes an installation groove 501 opened at the bottom of the lower mold body 2, a hydraulic rod 502 fixedly installed inside the installation groove 501, telescopic rods 503 fixedly installed on the top of the fixed seat 1 and evenly distributed, a fixing plate 504 fixedly installed on the output shaft of the hydraulic rod 502, a plurality of installation cylinders 505 fixedly installed on the top of the fixing plate 504 and having an open top, ejection rods 506 inserted inside the installation cylinders 505, bolts 507 passing through the outside between the installation cylinders 505 and the corresponding ejection rods 506, and nuts 508 threadedly connected to the outside of the bolts 507 and abutting against the outside of the corresponding installation cylinders 505.

[0027] It should be noted that two groups of heat dissipation fins 401 are fixedly connected to the outside of the lower die body 2 except for the front side. A heat dissipation fan 402 is fixedly installed between the sides of each group of heat dissipation fins 401 away from the lower die body 2. The number of each group of heat dissipation fins 401 is at least four. Specifically, the number of each group of heat dissipation fins 401 is six, so that the heat dissipation fins 401 can play an effective heat dissipation role. An installation cavity is formed inside the lower die body 2, and a heating pipe 403 is fixedly installed inside the installation cavity. The heating pipe 403 is arranged outside the ejector rod 506 and does not contact the outside of the ejector rod 506, so that while the heating pipe 403 can normally cool the molten material inside the mold cavity, it will not affect the ejection work of the ejector rod 506. The heating pipe 403 is an electric heating pipe and can perform heating work.

[0028] In addition, the front side of the installation groove 501 is open. A baffle located on the front side of the installation groove 501 is detachably connected to the front of the lower die body 2, so that the internal structure can be maintained by disassembling the baffle. A placement groove for inserting and installing the hydraulic rod 502 is formed at the top of the fixed seat 1, providing sufficient installation space for the hydraulic rod 502.

[0029] At the same time, the end of the telescopic rod 503 is fixedly connected to the bottom of the fixed plate 504, enabling the fixed plate 504 to move linearly under the action of the telescopic rod 503. The end of the ejector rod 506 penetrates the inside of the lower die body 2 and extends into the mold cavity. The top of the ejector rod 506 matches the inner bottom wall of the mold cavity. The outside of the ejector rod 506 is smooth, allowing the top of the ejector rod 506 to move into the mold cavity, and the top of the ejector rod 506 can cooperate with the inner side of the mold cavity to perform the molding work.

[0030] In this embodiment, the mold clamping assembly 300 is a structure for forming a space for columnar material molding of the wind power gearbox.

[0031] As Figure 1 、 Figure 2 and Figure 4 shown, the mold clamping assembly 300 includes two support columns 301 fixed to the top of the fixed seat 1, a support plate 302 fixed between the tops of the two support columns 301, a sliding cylinder 303 fixed to the top of the support plate 302, a sliding rod 304 slidably connected to the inside of the sliding cylinder 303, an upper die body 305 fixed between the bottoms of the two sliding rods 304, a hydraulic cylinder 306 passing through and fixedly installed on the top of the support plate 302, a feeding pipe 307 fixed to the top of the upper die body 305, four mold clamping blocks 308 fixed to the top of the lower die body 2 and evenly distributed, and four mold clamping grooves 309 formed in the bottom of the upper die body 305 for inserting the four mold clamping blocks 308 respectively.

[0032] It should be noted that the end of the sliding rod 304 sequentially penetrates through the corresponding sliding cylinder 303 and the support plate 302, enabling the sliding rod 304 to move normally and stably inside the sliding cylinder 303. The output shaft of the hydraulic cylinder 306 is fixedly connected to the top of the upper die body 305, enabling the hydraulic cylinder 306 to push the upper die body 305 to move.

[0033] In addition, a material injection hole communicating with the inside of the material injection pipe 307 is formed at the bottom of the upper die body 305. Both the top and bottom of the material injection pipe 307 are open, enabling the molten material to normally pass through the material injection pipe 307 and be injected into the material injection hole, and then be conveyed into the mold cavity for molding. The position of the upper die body 305 corresponds to the position of the lower die body 2, enabling the upper die body 305 to normally close the mold with the lower die body 2, facilitating the molding of the internal molten material.

[0034] The working principle of the above embodiment is as follows:

[0035] When carrying out the casting work, start the heating pipe 403 to preheat the lower die body 2. Start the hydraulic cylinder 306 to push the upper die body 305 to move towards the side close to the lower die body 2 under the limiting sliding fit of the two sliding rods 304 and the sliding cylinder 303, so that the upper die body 305 and the lower die body 2 are closed, and the die closing block 308 is inserted into the corresponding die closing groove 309 to achieve precise positioning to ensure the accuracy of material injection. Pour the melted raw material into the gap between the lower die body 2 and the upper die body 305 quantitatively through the material injection pipe 307 to limit its shape. Close the heating pipe 403 and start the cooling fan 402 to enable the lower die body 2 and the internal molten material to be quickly cooled through the cooling fins 401. After cooling is completed, start the hydraulic cylinder 306 to move the upper die body 305 away from the lower die body 2. Start the hydraulic rod 502 to push the fixed plate 504 to move linearly under the action of the telescopic rod 503, and drive the mounting cylinder 505 and the ejector rod 506 to move towards the side close to the upper die body 305. Through the cooperation between the ends of the ejector rods 506, from point to surface, a stable supporting effect is exerted on the outer surface of the formed gearbox, thereby ejecting the formed gearbox from the inside of the lower die body 2 and facilitating the removal of the formed gearbox from the inside of the lower die body 2, and the casting work of the wind power generation gearbox can be completed.

[0036] Compared with the prior art, for this integral casting mold of a high-precision wind power gearbox, through the coordinated use of the lower die body 2 at the top of the fixed seat 1, the die closing assembly 300 and the ejecting assembly 500, it can further improve the convenience of the demolding work and facilitate the removal of the workpiece after demolding. By converting the surface of the ejecting structure into individual points and utilizing the support structure features distributed in a dot pattern, the workpiece can be stably ejected, and at the same time, the difficulty of the formed workpiece being completely separated is reduced, enabling the finished workpiece of the wind power gearbox to be conveniently removed, thereby enhancing the practicality of the casting mold and solving the problem that when the existing high-precision gearbox mold is applied to workpieces with irregular shapes such as wind turbine gearboxes, the contact area between the ejecting structure and the workpiece surface is too large, which is not conducive to the demolding work.

[0037] All the electrical components mentioned in the text are electrically connected to the main controller and the power supply. The provision of the power supply belongs to the common knowledge in the art. The main controller can be a conventional known device such as a computer for control, which can be realized by simple programming by those skilled in the art, and all are existing publicly disclosed electrical connection technologies and will not be elaborated in the text.

[0038] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitations, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A high-precision integral casting mold for a wind power generation gearbox, comprising a fixing seat (1), characterized in that: A lower mold body (2) is fixedly mounted on the top of the fixing seat (1); a mold groove for forming the outer shape of the wind power generation gearbox is provided on the top of the fixing seat (1); a mold clamping assembly (300) for die casting is mounted on the top of the fixing seat (1); and an ejection assembly (500) located inside the lower mold body (2) is mounted on the top of the fixing seat (1); The ejection assembly (500) comprises a mounting groove (501) provided at the bottom of the lower mold body (2), a hydraulic rod (502) fixedly mounted on the inner side of the mounting groove (501), telescopic rods (503) fixedly mounted on the top of the fixing seat (1) and evenly distributed, a fixing plate (504) fixedly mounted on the output shaft of the hydraulic rod (502), a plurality of mounting tubes (505) fixed on the top of the fixing plate (504) and having an opening at the top, an ejection rod (506) inserted into the inner side of the mounting tube (505), a bolt (507) inserted between the mounting tube (505) and the outer side of the corresponding ejection rod (506), and a nut (508) threadedly connected to the outer side of the bolt (507) and abutting against the outer side of the corresponding mounting tube (505).

2. The high-precision integral casting mold for a wind power generation gearbox according to claim 1, characterized in that: The clamping assembly (300) includes two support columns (301) fixed on the top of the fixing seat (1), a support plate (302) fixed between the tops of the two support columns (301), a slide cylinder (303) fixed on the top of the support plate (302), a sliding rod (304) slidably connected to the inner side of the slide cylinder (303), an upper mold body (305) fixedly installed between the bottoms of the two sliding rods (304), a hydraulic cylinder (306) passing through and fixedly installed on the top of the support plate (302), an injection pipe (307) fixed on the top of the upper mold body (305), four clamping modules (308) fixed on the top of the lower mold body (2) and evenly distributed, and four clamping grooves (309) opened on the bottom of the upper mold body (305) and respectively for the four clamping modules (308) to be plugged in.

3. The high-precision integral casting mold for a wind power generation gearbox according to claim 1, characterized in that: Two groups of heat dissipation fins (401) are fixedly connected to the outer side of the lower mold body (2) except the front side, and a heat dissipation fan (402) is fixedly installed between the sides of each group of heat dissipation fins (401) away from the lower mold body (2). An installation cavity is provided inside the lower mold body (2), and a heating pipe (403) is fixedly installed inside the installation cavity.

4. A high-precision integral casting mold for a wind power generation gearbox according to claim 3, characterized in that: The number of the heat dissipation fins (401) in each group is at least four, and the heating tube (403) is arranged on the outside of the ejector rod (506) and does not contact the outside of the ejector rod (506).

5. The high-precision integral casting mold for a wind power generation gearbox according to claim 2, characterized in that: The ends of the sliding rod (304) pass through the corresponding slide cylinder (303) and the support plate (302) in sequence, the output shaft of the hydraulic cylinder (306) is fixedly connected to the top of the upper mold body (305), and the bottom of the upper mold body (305) is provided with an injection hole connected to the inside of the injection pipe (307), the top and bottom of the injection pipe (307) are both open, and the position of the upper mold body (305) corresponds to the position of the lower mold body (2).

6. The high-precision integral casting mold for a wind power generation gearbox according to claim 1, characterized in that: The front side of the installation groove (501) is open, the front side of the lower mold body (2) is detachably connected to a baffle located on the front side of the installation groove (501), and the top of the fixing seat (1) is provided with a placement groove for the hydraulic rod (502) to be plugged in and installed.

7. The high-precision integral casting mold for a wind power generation gearbox according to claim 1, characterized in that: The end of the telescopic rod (503) is fixedly connected to the bottom of the fixed plate (504), the end of the ejector rod (506) passes through the interior of the lower mold body (2) and extends to the interior of the mold groove, and the top end of the ejector rod (506) matches the inner bottom wall of the mold groove.

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