Leak-proof casting device for box body of wind power gear box

Abstract

The invention relates to the technical field of casting equipment, in particular to a leakage-proof casting device for a wind power gear box body, which comprises a casting base, the upper end face of the casting base is movably connected with a box body casting tool, the outer wall of the casting base is fixedly connected with a supporting frame, and a liquid inlet pipe is slidably arranged at the top end of the supporting frame in a penetrating manner; the lower end of the liquid inlet pipe fixedly communicates with two adapter pipes, and the outer walls of the two adapter pipes are fixedly connected with self-adaptive speed adjusting assemblies. The casting flow speed of molten iron can be adjusted in a self-adaptive mode, air is prevented from leaking into the molten iron, the structural strength of a box casting is guaranteed, the molten iron can be rotationally poured into the cavity in the box casting tool, distribution of the molten iron in the cavity is more uniform, the distribution efficiency is higher, meanwhile, exhaust of air in the box casting tool can be accelerated in an auxiliary mode, and the casting efficiency of the box casting tool is improved. The air is further prevented from leaking into the molten iron, and the box casting tool can be quickly disassembled and conveniently cleaned.

Description

Technical Field

[0001] This invention relates to the field of casting equipment technology, and specifically to a leak-proof casting device for wind turbine gearbox housings. Background Technology

[0002] The wind turbine gearbox is the core transmission component in a wind turbine generator. It converts the low-speed rotation of the wind turbine into high-speed power through gear sets to drive the generator to produce electricity. The gearbox housing serves as an important supporting structure. The housing is mostly made of high-strength cast iron or cast steel, and is manufactured through casting processes such as mold preparation, liquid metal casting, and machining. The housing must ensure structural strength and installation accuracy to ensure stable support for the internal gear bearings.

[0003] However, the gearbox casting equipment still has the following problems when casting wind turbine gearbox housings: During the casting process of wind turbine gearbox housings, molten iron is usually poured vertically into the mold cavity. However, the flow rate of molten iron is difficult to control under the vertical pouring method. When the molten iron pouring flow rate is too fast, the molten iron will impact the air in the mold cavity at a relatively high speed, causing air to leak into the molten iron. Moreover, the rate at which air is naturally discharged from the mold cavity is relatively slow, which will result in air bubbles in the housing casting and affect the structural strength of the housing casting. In the vertical casting method, the distribution efficiency of molten iron in the mold cavity is low, which makes the time cost required for uniform distribution of molten iron in the mold cavity high and easily affects the overall casting efficiency of the box casting. The casting fixtures used for box casting are often integrated with the casting equipment, which makes it inconvenient to install and disassemble the fixtures. After the fixtures have been used for casting for a long time, a small amount of iron material will remain inside them. The inconvenience of disassembling the fixtures will increase the subsequent cleaning costs. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a leak-proof casting device for wind turbine gearbox housings. This device effectively solves the problems of difficulty in controlling the flow rate of molten iron during vertical pouring, excessively fast molten iron flow causing air bubbles in the housing casting, affecting its structural strength, low distribution efficiency during vertical pouring, impacting overall casting efficiency, and inconvenient mold installation and disassembly, resulting in low demolding efficiency and increased cleaning costs after casting.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a leak-proof casting device for wind turbine gearbox housings, comprising: A casting base, wherein a box casting mold is movably connected to the upper end face of the casting base, a support frame is fixedly connected to the outer wall of the casting base, a liquid inlet pipe is slidably provided through the top of the support frame, and two transfer pipes are fixedly connected to the lower end of the liquid inlet pipe. An adaptive speed regulating component is fixedly connected to the outer wall of each of the two transfer pipes. The adaptive speed regulating component is used to adaptively adjust the pouring flow rate of molten iron. The adaptive speed control component includes a first outer cylinder fixedly connected to the outer wall of the transfer tube. A control piston rod is slidably connected to the inner wall of the first outer cylinder. A stop plate is fixedly connected to the end of the control piston rod located inside the transfer tube. A miniature tension spring is fixedly connected between the end of the control piston rod located inside the first outer cylinder and the axial inner wall of the first outer cylinder. An adjustment chamber is fixedly connected to the lower end of the transfer tube. A casting pipe is fixedly connected to the lower end of the adjustment chamber. The casting pipe has the same inner diameter as the transfer tube. A channel adjustment component is fixedly connected to the side wall of the adjustment chamber. The channel adjustment component is used to adjust the diameter of the channel inside the adjustment chamber. A uniform pouring assembly is fixedly connected to the top of the support frame. The uniform pouring assembly is used to drive the two pouring pipes to rotate and pour molten iron and assist in sucking air out of the box casting. A quick-release assembly is provided on the upper surface of the casting base. The quick-release assembly is used to quickly install and remove the box casting.

[0006] Furthermore, the channel adjustment component includes a second outer cylinder fixedly connected to the side wall of the adjustment chamber. A driven piston rod is slidably connected to the inner wall of the second outer cylinder. The end of the driven piston rod passes through the second outer cylinder and is fixedly connected to a baffle. The baffle is slidably fitted with the inner wall of the adjustment chamber. A connecting pipe is fixedly connected between the first outer cylinder and the second outer cylinder. A liquid storage chamber is formed between the first outer cylinder, the connecting pipe, and the second outer cylinder. The liquid storage chamber is filled with metal pressure transmitting fluid.

[0007] Furthermore, the box casting mold includes a base plate, an inner casting cylinder, and an outer casting cylinder, and the upper surface of the base plate, the outer wall of the inner casting cylinder, and the inner wall of the outer casting cylinder form a cavity.

[0008] Furthermore, the uniform casting assembly includes an annular guide rail fixedly connected to the top of the support frame, a rotating frame slidably connected to the inner side of the annular guide rail, a rotation drive component fixedly connected to the inner side of the rotating frame, the rotation drive component being used to drive the rotating frame to rotate, two electric push rods fixedly connected to the lower end face of the rotating frame, a ring frame fixedly connected to the lower end of the two casting pipes, the telescopic ends of the two electric push rods fixedly connected to the ring frame, and an auxiliary air extraction component fixedly connected to the upper end face of the ring frame.

[0009] Furthermore, the rotary drive component includes an internal gear ring fixedly connected to the inner side of the rotating frame, a stepper motor fixedly mounted on the top of the support frame, a drive gear fixedly connected to the output end of the stepper motor, and the drive gear meshing with the internal gear ring.

[0010] Furthermore, the auxiliary suction component includes several suction cylinders fixedly connected to the upper end face of the ring frame. Each suction cylinder has a reciprocating screw rotatably connected through its side wall. A sealing plate is threaded onto the reciprocating screw, and the sealing plate is slidably connected to the inner wall of the suction cylinder. Several suction pipes and several exhaust pipes are fixedly connected to the side wall of the suction cylinder. One-way valve diaphragms are provided at the connection points between the suction pipes, exhaust pipes and suction cylinders. The lower ends of the suction pipes are fixedly connected to the ring frame. An annular toothed plate is fixedly connected to the middle of the support frame. A transmission gear is fixedly connected to the end of each reciprocating screw located outside the suction cylinder, and the transmission gear meshes with the annular toothed plate.

[0011] Furthermore, the quick-release assembly includes a placement groove on the upper surface of the casting base, the base plate matches the placement groove, a plurality of magnetic rods are slidably connected through the base plate, and a pressure spring is fixedly connected between the upper end of each of the magnetic rods and the upper surface of the base plate. A plurality of fixing slots are provided in the bottom surface of the placement groove, the magnetic rods match the fixing slots, and an electromagnet block is fixedly connected to the bottom surface of each of the fixing slots. A control button is fixedly installed on the support frame, and the control button is used to control the electromagnet blocks to be energized and de-energized. The control button, several electromagnet blocks, and an external power supply form a closed series circuit. When the electromagnet blocks are energized, the opposite poles of the electromagnet blocks and the magnet rod attract each other.

[0012] Furthermore, a bearing is fixedly connected to the top of the support frame, and a sliding frame is fixedly connected to the inner ring of the bearing, with the liquid inlet pipe slidingly engaged with the sliding frame.

[0013] The technical solution provided by this invention has the following advantages compared with the known prior art: 1. In this invention, an adaptive speed control component is provided. After the molten iron is injected into the inlet pipe, it flows through the transfer pipe and impacts the abutment. After the abutment is impacted, the driven piston connecting rod will drive the baffle to move closer to the side wall of the regulating chamber, which increases the diameter of the channel through which the molten iron flows in the regulating chamber and is larger than the diameter of the channel through the transfer pipe. This reduces the flow rate of the molten iron as it flows through the pouring pipe and is poured into the box casting. The faster the molten iron flows through the transfer pipe, the greater the reduction in flow rate after passing through the regulating chamber. This allows for adaptive adjustment of the pouring flow rate of the molten iron, preventing air leakage into the molten iron and effectively avoiding the generation of air bubbles in the box casting due to excessively fast pouring flow rate of the molten iron. This helps to ensure the structural strength of the box casting. 2. The present invention is equipped with a uniform pouring component, which can drive the ring frame to rotate synchronously when pouring molten iron, so that the pouring pipe can pour molten iron into the cavity inside the box casting in a rotating manner, thereby making the distribution of molten iron in the cavity more uniform and the distribution efficiency higher, so as to reduce the time cost of molten iron distribution and improve the overall casting efficiency of the box casting. 3. In this invention, an auxiliary air extraction component is provided. When the ring frame rotates, it also drives the suction cylinder to rotate. When the suction cylinder rotates, the sealing plate can slide back and forth in the suction cylinder. When the sealing plate slides towards the outside of the ring frame, the air pressure in the suction cylinder decreases and the air in the cavity is drawn through the suction pipe. When the sealing plate slides towards the inside of the ring frame, the air pressure in the suction cylinder increases and the drawn air is discharged through several exhaust pipes. This can help accelerate the discharge of air in the box casting, further prevent air from leaking into the molten iron, and ensure the casting quality and casting strength of the box casting. 4. The present invention is equipped with a quick-release component. By pressing the control button, the power of several electromagnet blocks can be cut off, so that the electromagnet blocks lose their magnetism and no longer generate magnetic attraction to the magnet rod. Under the elastic force of the pressure spring, the magnet rod automatically moves up and disengages from the fixed slot, which can quickly realize the disassembly operation of the box casting. This facilitates the cleaning operation of the box casting and helps to reduce the cleaning cost of the box casting. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the box casting part in this invention; Figure 4 This is an exploded view of the liquid inlet pipe section of the present invention; Figure 5 This is a cross-sectional view of a portion of the adaptive speed control component in this invention; Figure 6 This is a cross-sectional view of the structure of the No. 1 outer cylinder and the No. 2 outer cylinder in this invention; Figure 7 This is an exploded view of the top portion of the supporting frame structure in this invention; Figure 8This is a schematic diagram of the ring frame structure in this invention; Figure 9 This is a cross-sectional view of the suction cylinder portion of the present invention; Figure 10 This is a cross-sectional view of the casting base and support frame structure in this invention.

[0016] Reference numerals: 1. Casting base; 2. Box casting mold; 3. Support frame; 4. Inlet pipe; 5. Transfer pipe; 6. Adaptive speed control assembly; 61. Outer cylinder No. 1; 62. Control piston connecting rod; 63. Sheath; 64. Adjustment chamber; 65. Pour pipe; 66. Miniature tension spring; 7. Channel adjustment component; 71. Outer cylinder No. 2; 72. Driven piston connecting rod; 73. Baffle; 74. Connecting pipe; 8. Uniform pouring assembly; 81. Circular guide rail; 82. Rotating frame; 83. Electric push rod; 84. Ring frame; 9. Quick release assembly; 9 1. Placement slot; 92. Magnet rod; 93. Pressure spring; 94. Fixing slot; 95. Electromagnet block; 96. Control button; 10. Base plate; 11. Inner casting cylinder; 12. Outer casting cylinder; 13. Rotary drive component; 131. Internal gear ring; 132. Stepper motor; 133. Drive gear; 14. Auxiliary suction component; 141. Suction cylinder; 142. Reciprocating screw; 143. Sealing plate; 144. Suction pipe; 145. Exhaust pipe; 146. Annular toothed plate; 147. Transmission gear; 15. Bearing; 16. Slide frame. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] The present invention will be further described below with reference to embodiments.

[0019] Example: Refer to Figures 1 to 10 A leak-proof casting device for a wind turbine gearbox housing includes: a casting base 1, a housing casting mold 2 movably connected to the upper end face of the casting base 1, the housing casting mold 2 including a base plate 10, an inner casting cylinder 11 and an outer casting cylinder 12, the upper end face of the base plate 10, the outer wall of the inner casting cylinder 11 and the inner wall of the outer casting cylinder 12 forming a cavity, a support frame 3 fixedly connected to the outer wall of the casting base 1, a liquid inlet pipe 4 slidably provided through the top end of the support frame 3, a bearing 15 fixedly connected to the top end of the support frame 3, a sliding frame 16 fixedly connected to the inner ring of the bearing 15, the liquid inlet pipe 4 slidingly engaging with the sliding frame 16, and two adapter pipes 5 fixedly connected to the lower end of the liquid inlet pipe 4; Specifically, the inlet pipe 4 can slide up and down relative to the slide frame 16, while the bearing 15 can support the rotational movement of the inlet pipe 4 relative to the top of the support frame 3, so as to ensure that the ring frame 84 can rotate and move up and down stably. Both transfer pipes 5 are fixedly connected to the outer walls of an adaptive speed regulating component 6. The adaptive speed regulating component 6 is used to adaptively adjust the pouring flow rate of molten iron. The adaptive speed regulating component 6 includes a first outer cylinder 61 fixedly connected to the outer wall of the transfer pipe 5. A control piston rod 62 is slidably connected to the inner wall of the first outer cylinder 61. A stop plate 63 is fixedly connected to the end of the control piston rod 62 located inside the transfer pipe 5. A miniature tension spring 66 is fixedly connected between the end of the control piston rod 62 located inside the first outer cylinder 61 and the axial inner wall of the first outer cylinder 61. An adjustment chamber 64 is fixedly connected to the lower end of the transfer pipe 5. A pouring pipe 65 is fixedly connected to the lower end of the adjustment chamber 64. The pouring pipe 65 has the same inner diameter as the transfer pipe 5. The side wall of the adjustment chamber 64 is fixedly connected to... A channel adjustment component 7 is provided, which is used to adjust the diameter of the channel in the adjustment chamber 64. The channel adjustment component 7 includes a second outer cylinder 71 fixedly connected to the side wall of the adjustment chamber 64. A driven piston rod 72 is slidably connected to the inner wall of the second outer cylinder 71. The end of the driven piston rod 72 passes through the second outer cylinder 71 and is fixedly connected to a baffle 73. The baffle 73 is slidably fitted with the inner wall of the adjustment chamber 64. A connecting pipe 74 is fixedly connected between the first outer cylinder 61 and the second outer cylinder 71. A liquid storage chamber is formed between the first outer cylinder 61, the connecting pipe 74 and the second outer cylinder 71. The liquid storage chamber is filled with metal pressure transmitting fluid. The connecting pipe 74 is used to connect the first outer cylinder 61 and the second outer cylinder 71 and transmit the pressure of the metal pressure transmitting fluid. If the molten iron flow rate in the inlet pipe 4 is too fast, the molten iron will impact the abutment plate 63 when flowing through the transfer pipe 5. After being impacted, the abutment plate 63 will move closer to the side wall of the transfer pipe 5. When the abutment plate 63 moves, it will simultaneously cause the control piston rod 62 to slide in the sealing area of ​​the first outer cylinder 61. This will cause the control piston rod 62 to push the metal pressure transmitting liquid in the first outer cylinder 61, increasing the amount of metal pressure transmitting liquid entering the second outer cylinder 71. Simultaneously, it will drive the driven piston rod 72 to slide in the second outer cylinder 71, causing the driven piston rod 72 to move the baffle 73 closer to the side wall of the regulating chamber 64, thereby allowing the molten iron in the regulating chamber 64 to flow through... The increased diameter of the channel, which is larger than that of the transfer pipe 5, reduces the flow rate of molten iron as it flows through the pouring pipe 65 and is poured into the box casting 2. The faster the molten iron flows through the transfer pipe 5, the more the driven piston rod 72 will move the baffle 73, resulting in a larger channel diameter in the regulating chamber 64. This means that the molten iron's flow rate is reduced more after passing through the regulating chamber 64, thus enabling adaptive adjustment of the molten iron's pouring speed. This prevents air leakage into the molten iron and effectively avoids air bubbles in the box casting due to excessively fast molten iron pouring speed, which helps ensure the structural strength of the box casting. Specifically, both outer cylinder 61 and outer cylinder 71 are made of high-chromium-nickel alloy, which has both high temperature resistance and oxidation resistance. The control piston connecting rod 62 and driven piston connecting rod 72 are made of cobalt-based alloy, which has good thermal fatigue resistance and wear resistance. The metal pressure transmission fluid is made of liquid sodium-potassium alloy. Liquid sodium-potassium alloy is in a liquid state at room temperature, has excellent incompressible properties, and also has high temperature resistance. It is suitable for pressure transmission in high temperature environments and can also operate stably in a liquid state for a long time in ultra-high temperature environments. Specifically, the miniature tension spring 66 has a tendency to pull the control piston rod 62 closer to the transfer tube 5, and the elastic force of the miniature tension spring 66 itself only supports pulling the control piston rod 62. When the molten iron impacts the abutment 63 at a sufficiently fast flow rate, the impact force on the abutment 63 can fully overcome the tension force of the miniature tension spring 66, so that the control piston rod 62 can be stably and sealed within the first outer cylinder 61, ensuring the normal operation of the adaptive speed regulating component 6.

[0020] A uniform pouring assembly 8 is fixedly connected to the top of the support frame 3. The uniform pouring assembly 8 is used to drive the two pouring pipes 65 to rotate and pour molten iron and assist in sucking air from inside the casting box 2. The uniform pouring assembly 8 includes an annular guide rail 81 fixedly connected to the top of the support frame 3. A rotating frame 82 is slidably connected to the inner side of the annular guide rail 81. A rotating drive component 13 is fixedly connected to the inner side of the rotating frame 82. The rotating drive component 13 is used to drive the rotating frame 82 to rotate. The rotating drive component 13 includes an internal gear ring 131 fixedly connected to the inner side of the rotating frame 82. A stepper motor 132 is fixedly installed at the top of the support frame 3. A drive gear 133 is fixedly connected to the output end of the stepper motor 132. The drive gear 133 meshes with the internal gear ring 131. When molten iron is poured, the rotating frame 82 can be driven to rotate synchronously, so that the two electric push rods 83, the ring frame 84 and the pouring pipe 65 can rotate synchronously. This allows the pouring pipe 65 to pour molten iron into the cavity inside the box casting 2 in a rotating manner, which makes the distribution of molten iron in the cavity more uniform and the distribution efficiency higher, thereby reducing the time cost of molten iron distribution and improving the overall casting efficiency of the box casting. Specifically, the stepper motor 132 drives the drive gear 133 to rotate at a slower speed, so that the pouring pipe 65 can rotate slowly relative to the box casting 2, avoiding the molten iron from accelerating the pouring flow rate due to the large centrifugal force during pouring. In addition, the stepper motor 132 adopts a high-temperature resistant shell, which can operate stably in the high-temperature environment of molten iron pouring.

[0021] Two electric push rods 83 are fixedly connected to the lower end face of the rotating frame 82. A ring frame 84 is fixedly connected to the lower end of the two casting pipes 65. The telescopic ends of the two electric push rods 83 are fixedly connected to the ring frame 84. An auxiliary suction component 14 is fixedly connected to the upper end face of the ring frame 84. The auxiliary suction component 14 includes several suction cylinders 141 fixedly connected to the upper end face of the ring frame 84. A reciprocating screw 142 is rotatably connected through the side wall of each suction cylinder 141. A sealing plate 143 is threaded onto the reciprocating screw 142. The sealing plate 143 is slidably connected to the inner wall of the suction cylinder 141. The suction cylinder 141 has several suction pipes 144 and several exhaust pipes 145 fixedly connected to its side wall. The ring frame 84 has a through hole, and the lower ends of several suction pipes 144 are located at the through hole, so that the suction pipes 144 can fully draw air from the cavity when pouring molten iron. The lower ends of several suction pipes 144 are fixedly connected to the ring frame 84. The support frame 3 has an annular toothed plate 146 fixedly connected in the middle. The ends of several reciprocating screws 142 located outside the suction cylinder 141 are fixedly connected to transmission gears 147, and the transmission gears 147 mesh with the annular toothed plate 146. When the ring frame 84 rotates, it also drives the suction cylinder 141 to rotate. When the suction cylinder 141 rotates, it can drive the reciprocating screw 142 to rotate by the meshing transmission of the transmission gear 147 and the annular toothed plate 146. This allows the sealing plate 143 on the reciprocating screw 142 to slide back and forth in the suction cylinder 141. When the sealing plate 143 slides towards the outside of the ring frame 84, the air pressure in the suction cylinder 141 decreases and the air is drawn from the cavity through the suction pipe 144. When the sealing plate 143 slides towards the inside of the ring frame 84, the air pressure in the suction cylinder 141 increases and the drawn air is discharged through several exhaust pipes 145. This helps to accelerate the discharge of air from the box casting 2, further preventing air leakage into the molten iron and ensuring the casting quality and casting strength of the box casting. Specifically, a one-way valve diaphragm is provided at the connection points between a number of suction pipes 144 and a number of exhaust pipes 145 and the suction cylinder 141. The one-way valve diaphragm at the connection point between the suction pipe 144 and the suction cylinder 141 only allows gas to enter the suction cylinder 141 from the suction pipe 144, and the one-way valve diaphragm at the connection point between the exhaust pipe 145 and the suction cylinder 141 only allows gas to enter the exhaust pipe 145 from the suction cylinder 141. Specifically, the reciprocating screw 142 is rotatably connected to the side wall of the suction cylinder 141 with low damping. When the electric push rod 83 drives the ring frame 84 and the suction cylinder 141 to move down, the transmission gear 147 will rotate by itself at a certain angle and mesh with the annular toothed plate 146 when it contacts the annular toothed plate 146, so as to ensure the normal operation of the uniform casting component 8. Specifically, the inner diameter of the annular toothed plate 146 is larger than the outer diameter of the ring frame 84, so that the ring frame 84 and the two electric push rods 83 will not collide with the annular toothed plate 146 when moving up and down, thus enabling the ring frame 84 to move smoothly up and down.

[0022] The upper surface of the casting base 1 is provided with a quick-release assembly 9, which is used for quick installation and disassembly of the box casting 2. The quick-release assembly 9 includes a placement groove 91 on the upper surface of the casting base 1. The base plate 10 matches the placement groove 91. Several magnetic rods 92 are slidably connected through the base plate 10. Pressure springs 93 are fixedly connected between the upper ends of the several magnetic rods 92 and the upper surface of the base plate 10. Several fixing slots 94 are provided in the bottom surface of the placement groove 91. The magnetic rods 92 match the fixing slots 94. Electromagnetic blocks 95 are fixedly connected in the bottom surface of the several fixing slots 94. A control button 96 is fixedly installed on the support frame 3. The control button 96 is used to control the energization and de-energization of the several electromagnetic blocks 95. The control button 96, the several electromagnetic blocks 95 and the external power supply form a closed series circuit. When the electromagnetic blocks 95 are energized, the electromagnetic blocks 95 and the magnetic rods 92 attract each other with opposite poles. By controlling the electric push rod 83 to move the ring frame 84 upward, the ring frame 84 is separated from the box casting 2. By pressing the control button 96, the power to several electromagnet blocks 95 is cut off, so that the electromagnet blocks 95 lose their magnetism and no longer generate magnetic attraction to the magnet rod 92. Under the elastic force of the pressure spring 93, the magnet rod 92 can automatically move upward and disengage from the fixed slot 94. At this time, the box casting 2 can be directly moved away from the placement slot 91, so that the box casting 2 is separated from the casting base 1. The disassembly operation of the box casting 2 can be quickly realized, which facilitates the cleaning operation of the box casting 2 and helps to reduce the cleaning cost of the box casting 2. Specifically, the electromagnet block 95 generates a magnetic attraction force on the magnet rod 92, and after the magnet rod 92 is inserted into the fixed slot 94, the pressure spring 93 is in a compressed state and accumulates elastic force. When the electromagnet block 95 is de-energized, the magnet rod 92 can automatically disengage from the fixed slot 94 under the push of the elastic force of the pressure spring 93. Specifically, during the installation of the housing casting 2, the control button 96 can be pressed to energize several electromagnet blocks 95, causing the electromagnet blocks 95 to generate a magnetic attraction force on the magnetic rods 92, and allowing the several magnetic rods 92 to be automatically inserted into the fixing slots 94, thereby enabling the housing casting 2 to be quickly and fully installed and fixed.

[0023] The working principle of this invention is as follows: First, the box casting mold 2 is placed on the upper surface of the casting base 1, and the ring frame 84 is driven to move downward by the electric push rod 83, so that the lower surface of the ring frame 84 is in contact with the upper surface of the box casting mold 2. Then, the molten iron is injected into the inlet pipe 4. If the flow rate of the molten iron is too fast, the molten iron will impact the abutment plate 63 when it flows through the transfer pipe 5. After being impacted, the abutment plate 63 will move closer to the side wall of the transfer pipe 5. When the abutment plate 63 moves, it will simultaneously cause the control piston connecting rod 62 to slide in the sealing of the first outer cylinder 61, so that the control piston connecting rod 62 will push the metal pressure transmitting liquid in the first outer cylinder 61, so that the metal pressure transmitting liquid entering the second outer cylinder 71 will increase, and simultaneously drive the driven piston connecting rod 72 to slide in the second outer cylinder 71, so that the driven piston... The piston connecting rod 72 drives the baffle 73 to move closer to the side wall of the regulating chamber 64, thereby increasing the diameter of the channel through which the molten iron flows in the regulating chamber 64, which is larger than the channel diameter of the transfer pipe 5. This reduces the flow velocity of the molten iron as it flows through the pouring pipe 65 and is poured into the casting mold 2. Since the faster the molten iron flows through the transfer pipe 5, the greater the impact force of the molten iron on the abutment 63, the greater the distance that the abutment 63 moves closer to the side wall of the transfer pipe 5. This allows more molten metal to enter the second outer cylinder 71. In other words, the driven piston connecting rod 72 will drive the baffle 73 to move a greater distance, making the channel diameter in the regulating chamber 64 larger, and thus the reduction in the flow velocity of the molten iron after passing through the regulating chamber 64 is even greater. During the process of pouring molten iron into the cavity of the box casting 2, the stepper motor 132 can be started synchronously. The stepper motor 132 drives the drive gear 133 to rotate, and the meshing transmission between the drive gear 133 and the internal gear ring 131 drives the rotating frame 82 to rotate, so that the two electric push rods 83, the ring frame 84 and the pouring pipe 65 can rotate synchronously, thereby allowing the pouring pipe 65 to pour molten iron into the cavity of the box casting 2 in a rotating manner. When the ring frame 84 rotates, it also drives the suction cylinder 141 to rotate. When the suction cylinder 141 rotates, it can drive the reciprocating screw 142 to rotate by the meshing transmission of the transmission gear 147 and the annular toothed plate 146. This allows the sealing plate 143 on the reciprocating screw 142 to slide back and forth in the suction cylinder 141. When the sealing plate 143 slides towards the outside of the ring frame 84, the air pressure in the suction cylinder 141 decreases and the air is drawn from the cavity through the suction pipe 144. When the sealing plate 143 slides towards the inside of the ring frame 84, the air pressure in the suction cylinder 141 increases and the drawn air is discharged through several exhaust pipes 145, thereby helping to accelerate the discharge of air from the box casting 2. After the box casting is formed, the ring frame 84 can be moved upward by controlling the electric push rod 83, so that the ring frame 84 is separated from the box casting 2. By pressing the control button 96, the power of several electromagnet blocks 95 is cut off, so that several electromagnet blocks 95 lose their magnetism and no longer generate magnetic attraction to the magnet rod 92. The magnet rod 92 can be automatically moved upward and disengaged from the fixed slot 94 under the elastic force of the pressure spring 93. At this time, the box casting 2 can be directly moved away from the placement slot 91, so that the box casting 2 is separated from the casting base 1, and the disassembly operation of the box casting 2 can be quickly realized.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A leak-proof casting device for a wind turbine gearbox housing, characterized in that, include: A casting base (1) is movably connected to a box casting mold (2) on its upper end surface. A support frame (3) is fixedly connected to the outer wall of the casting base (1). A liquid inlet pipe (4) is slidably provided through the top of the support frame (3). Two adapter pipes (5) are fixedly connected to the lower end of the liquid inlet pipe (4). An adaptive speed regulating component (6) is fixedly connected to the outer wall of each of the two adapter pipes (5). The adaptive speed regulating component (6) is used to adaptively adjust the pouring flow rate of molten iron. The adaptive speed control component (6) includes a first outer cylinder (61) fixedly connected to the outer wall of the adapter pipe (5). The inner wall of the first outer cylinder (61) is sealed and slidably connected to a control piston rod (62). The end of the control piston rod (62) located inside the adapter pipe (5) is fixedly connected to a stop plate (63). The end of the control piston rod (62) located inside the first outer cylinder (61) is fixedly connected to the axial inner wall of the first outer cylinder (61) with a miniature tension spring (66). The lower end of the adapter pipe (5) is fixedly connected to an adjustment chamber (64). The lower end of the adjustment chamber (64) is fixedly connected to a casting pipe (65). The casting pipe (65) has the same inner diameter as the adapter pipe (5). The side wall of the adjustment chamber (64) is fixedly connected to a channel adjustment component (7). The channel adjustment component (7) is used to adjust the diameter of the channel inside the adjustment chamber (64). The top of the support frame (3) is fixedly connected to a uniform pouring component (8). The uniform pouring component (8) is used to drive the two pouring pipes (65) to rotate and pour molten iron and assist in sucking air from inside the box casting (2). The upper surface of the casting base (1) is provided with a quick-release component (9). The quick-release component (9) is used to quickly install and remove the box casting (2).

2. The anti-leakage casting device for wind turbine gearbox housing according to claim 1, characterized in that, The channel adjustment component (7) includes a second outer cylinder (71) fixedly connected to the side wall of the adjustment chamber (64). The inner wall of the second outer cylinder (71) is slidably connected to a driven piston rod (72). The end of the driven piston rod (72) passes through the second outer cylinder (71) and is fixedly connected to a baffle (73). The baffle (73) is slidably fitted with the inner wall of the adjustment chamber (64). A connecting pipe (74) is fixedly connected between the first outer cylinder (61) and the second outer cylinder (71). A liquid storage chamber is formed between the first outer cylinder (61), the connecting pipe (74), and the second outer cylinder (71). The liquid storage chamber is filled with metal pressure transmitting fluid.

3. The anti-leakage casting device for wind turbine gearbox housing according to claim 1, characterized in that, The box casting fixture (2) includes a bottom plate (10), an inner casting cylinder (11) and an outer casting cylinder (12). The upper end face of the bottom plate (10), the outer wall of the inner casting cylinder (11) and the inner wall of the outer casting cylinder (12) form a cavity.

4. The anti-leakage casting device for wind turbine gearbox housing according to claim 1, characterized in that, The uniform pouring assembly (8) includes an annular guide rail (81) fixedly connected to the top of the support frame (3). A rotating frame (82) is slidably connected to the inner side of the annular guide rail (81). A rotating drive component (13) is fixedly connected to the inner side of the rotating frame (82). The rotating drive component (13) is used to drive the rotating frame (82) to rotate. Two electric push rods (83) are fixedly connected to the lower end face of the rotating frame (82). A ring frame (84) is fixedly connected to the lower end of the two pouring pipes (65). The telescopic ends of the two electric push rods (83) are fixedly connected to the ring frame (84). An auxiliary air extraction component (14) is fixedly connected to the upper end face of the ring frame (84).

5. A leak-proof casting device for a wind turbine gearbox housing according to claim 4, characterized in that, The rotary drive component (13) includes an internal gear ring (131) fixedly connected to the inner side of the rotating frame (82), a stepper motor (132) fixedly installed at the top of the support frame (3), and a drive gear (133) fixedly connected to the output end of the stepper motor (132), and the drive gear (133) meshes with the internal gear ring (131).

6. A leak-proof casting device for a wind turbine gearbox housing according to claim 4, characterized in that, The auxiliary air extraction component (14) includes several suction cylinders (141) fixedly connected to the upper end face of the ring frame (84). Each of the suction cylinders (141) has a reciprocating screw (142) rotatably connected through its side wall. A sealing plate (143) is threaded onto the reciprocating screw (142). The sealing plate (143) is slidably connected to the inner wall of the suction cylinder (141). Several suction pipes (144) and several exhaust pipes (145) are fixedly connected to the side wall of the suction cylinder (141). One-way valve diaphragms are provided at the connection points between the suction pipes (144), the exhaust pipes (145), and the suction cylinder (141). The lower ends of the suction pipes (144) are fixedly connected to the ring frame (84). An annular toothed plate (146) is fixedly connected to the middle of the support frame (3). A transmission gear (147) is fixedly connected to the ends of the reciprocating screws (142) located outside the suction cylinder (141). The transmission gear (147) meshes with the annular toothed plate (146).

7. A leak-proof casting device for a wind turbine gearbox housing according to claim 3, characterized in that, The quick-release assembly (9) includes a placement groove (91) on the upper surface of the casting base (1). The base plate (10) matches the placement groove (91). Several magnetic rods (92) are slidably connected through the base plate (10). A pressure spring (93) is fixedly connected between the upper end of the several magnetic rods (92) and the upper surface of the base plate (10). Several fixing slots (94) are opened in the bottom surface of the placement groove (91). The magnetic rods (92) match the fixing slots (94). Electromagnetic blocks (95) are fixedly connected in the bottom surface of the several fixing slots (94). A control button (96) is fixedly installed on the support frame (3). The control button (96) is used to control the several electromagnetic blocks (95) to be energized and de-energized. The control button (96), several electromagnet blocks (95) and an external power supply form a closed series circuit. When the electromagnet block (95) is energized, the electromagnet block (95) and the magnet rod (92) attract each other with opposite poles.

8. The anti-leakage casting device for wind turbine gearbox housing according to claim 1, characterized in that, The top of the support frame (3) is fixedly connected to a bearing (15), and the inner ring of the bearing (15) is fixedly connected to a sliding frame (16). The liquid inlet pipe (4) is slidably engaged with the sliding frame (16).

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