Casting device for mine car balance suspension shaft housing

Abstract

The invention discloses a casting device for a mine car balance suspension shaft shell, and belongs to the field of metal casting. Comprising a base, an X-axis moving part connected to one side of the base, a Z-axis moving part fixedly connected to one side of the moving end of the X-axis moving part, a tilting part fixedly connected to one side of the moving end of the Z-axis moving part, and a supporting frame fixedly connected to one side of the rotating end of the tilting part. The mounting plate is connected to one side of the base and is used for fixing a mold; the mold splitting and closing part is used for realizing mold closing and mold splitting; the first Venturi mixing part can mix inert gas and a degassing agent discharged from the first discharging pipe, the inert gas and the degassing agent are fed into the first porous spray head through a hollow pipeline, and the mixture is sprayed out of the first porous spray head at the bottom of a steel ladle so that the degassing agent can chemically react with gas (especially hydrogen) in molten metal. And dissolved gases such as hydrogen and nitrogen in molten metal are effectively removed, the metal quality is improved, the solubility of the gases is reduced, and the gases are separated out and discharged.

Description

Technical Field

[0001] The invention relates to the field of metal casting, and more particularly to a casting device for a balanced suspension axle housing of a mine car. Background Art

[0002] The mine car balance suspension shaft refers to an important component on the mine car (such as a mining transport vehicle), which is mainly used to balance the load and stability of the mine car to ensure that the mine car can run smoothly in the complex mine environment. The manufacture of the balance shaft housing can usually be carried out by casting or forging. Casting is the most commonly used manufacturing method, especially in mass production, which can obtain complex shapes at a lower cost.

[0003] Casting is a type of casting method. Molten metal is stored in a ladle. The ladle is rotated to discharge the molten metal from the ladle and enter a mold for casting. During the smelting process, liquid metal easily absorbs gases such as nitrogen and oxygen in the air. If these gases are not removed, it is easy to cause pores, bubbles and pore defects in the casting. In order to solve this problem, the prior art (invention patent application with publication number CN102397998A) discloses a method for reducing the secondary oxidation of molten steel. Inert gas is blown into the tundish to discharge the air in the tundish, thereby forming a protective atmosphere and reducing the oxidation of the molten steel. Although the blowing of inert gas can help remove the air in the tundish, it cannot directly remove the dissolved gases (such as hydrogen and nitrogen) in the molten metal. This means that the discharge of air in the tundish cannot solve the problem of gas content in the molten metal and cannot effectively reduce the gas concentration in the molten metal. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a casting device for a balanced suspension axle housing of a mine car.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A casting device for a balanced suspension shaft housing of a mine car comprises a base, an X-axis moving part connected to one side of the base, a Z-axis moving part fixed to one side of a moving end of the X-axis moving part, a tilting part fixed to one side of a moving end of the Z-axis moving part, a support frame fixed to one side of a rotating end of the tilting part, a mounting plate connected to one side of the base for fixing a mold, and a mold splitting and mold closing part for realizing mold closing and mold opening. A molten storage unit is connected to one side of the support frame, and the molten storage unit includes a ladle fixedly connected to one side of the support frame, a plurality of one-way valves fixedly connected to the lower end of the ladle, a plurality of multi-hole nozzles fixedly connected to the inner bottom wall of the ladle and respectively connected to the plurality of one-way valves, an extended flow channel fixedly connected to the outer surface of the ladle, a cover body fixedly connected to the upper end of the ladle, a discharge port opened inside the ladle, and a negative pressure interface opened at the upper end of the cover body; A plurality of hollow pipes are fixedly connected inside the support frame, and one end of the plurality of hollow pipes extends from one side of the support frame and is respectively inserted into a plurality of one-way valves; a plurality of spiral conveying parts are fixedly connected to one side of the support frame, and a discharge pipe is fixedly connected to the discharge end of the spiral conveying part; the other end of the discharge pipe is connected to a Venturi mixing part, and the plurality of Venturi mixing parts are respectively connected to the other end of the plurality of hollow pipes through a plurality of pipes.

[0007] Furthermore, a feed guide portion is fixedly connected to one side of the base, and the feed guide portion is located above the feed port of the mold.

[0008] Furthermore, a plurality of position limiting extension parts for limiting the position of the ladle are fixedly connected to the upper end of the support frame.

[0009] Furthermore, the inner wall of the ladle is connected to a stirring and flow-feeding part, and the stirring and flow-feeding part includes a second porous nozzle rotatably connected to the inner bottom wall of the ladle, a second one-way valve fixedly connected to the lower end of the second porous nozzle and rotatably connected to the inside of the ladle, and a plurality of lower stirring paddles fixedly connected to the outer surface of the second porous nozzle, a bracket is fixedly connected to a first bracket at the lower end of the support frame, and a rotary joint is fixedly connected to the inner wall of the first bracket, an inner tube of the rotary joint passes through the support frame and is inserted into the inside of the second one-way valve and is fixedly connected to the second one-way valve, a second spiral conveying part is fixedly connected to the upper end of the support frame, and a second discharge pipe is fixedly connected to the discharge end of the second spiral conveying part, the other end of the second discharge pipe is connected to a second Venturi mixing part, and the second Venturi mixing part is connected to the input end of the rotary joint through a second pipe.

[0010] Furthermore, the lower end of the support frame is also connected to a driving unit for driving the inner tube of the rotary joint to rotate, and the driving unit includes a synchronous wheel 1 and a synchronous wheel 2 rotatably connected to the lower end of the support frame, and a synchronous belt connecting the synchronous wheel 1 with the synchronous wheel 2, the inner ring of the synchronous wheel 2 is fixedly connected to the outer surface of the inner tube of the rotary joint, the upper end of the support frame is fixedly connected to a motor 1, and the output shaft of the motor 1 passes through the support frame and is connected to the synchronous wheel 1.

[0011] Furthermore, a centering rod is fixedly connected to the upper end of the multi-hole nozzle 2, and a height adjustment unit is connected to the upper end of the cover body, and the height adjustment unit includes a bracket 2 fixedly connected to the upper end of the cover body, a screw rod 1 with two ends rotatably connected to the inner side wall of the bracket 2 and the upper end of the cover body respectively, a guide rod 1 with two ends fixedly connected to the inner side wall of the bracket 2 and the upper end of the cover body respectively, a lifting seat 1 screwed to the outside of the screw rod 1 and slidably sleeved on the outside of the guide rod 1, a motor 2 fixed to the upper end of the bracket 2, a motor 3 fixed to the upper end of the lifting seat 1, a hollow rotating rod sleeved on the outside of the centering rod, and an upper stirring paddle fixed to the outer surface of the hollow rotating rod, and the output shaft of the motor 2 passes through the bracket 2 and is fixedly connected to one end of the screw rod 1, and one end of the hollow rotating rod passes through the cover body to extend outward and is fixedly connected to the output shaft of the motor 3.

[0012] Furthermore, a liquid level sensor is fixedly connected to the inside of the cover body, and a detection end of the liquid level sensor extends into the inside of the ladle.

[0013] Furthermore, a through slot for the hollow rotating rod to pass through is provided inside the cover body, and a rubber ring is fixedly connected to the inner wall of the through slot, and the inner wall of the rubber ring is in contact with the outer surface of the hollow rotating rod.

[0014] Furthermore, a mesh bubble-breaking plate is fixedly connected to the inner wall of the ladle, and the mesh bubble-breaking plate is located above the second porous nozzle, a avoidance groove for accommodating a centering rod is opened inside the mesh bubble-breaking plate, an ultrasonic transducer part is fixedly connected to the outer surface of the ladle, and a conduction plate is fixedly connected to the inside of the ladle, two ends of the conduction plate are respectively connected to the ultrasonic transducer part and the mesh bubble-breaking plate, and an ultrasonic generating part connected to the ultrasonic transducer part is fixedly connected to the upper end of the support frame.

[0015] Furthermore, the upper ends of the cover body and the ladle are both provided with movable grooves, and the upper end of the cover body is connected to a sealing assembly, which includes a bracket three fixedly connected to the upper end of the cover body, a motor four fixedly connected to the upper end of the bracket three, a screw rod two whose two ends are rotatably connected to one side of the bracket three and the upper end of the cover body respectively, a guide rod two whose two ends are respectively fixed to one side of the bracket three and the upper end of the cover body, a lifting seat two screwed to the outside of the screw rod two and slidably sleeved on the outside of the guide rod two, a sealing plate fixedly connected to the lower end of the lifting seat two and inserted into the movable groove, and the output shaft of the motor four passes through the bracket three and is fixedly connected to one end of the screw rod two.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) In this scheme, a plurality of porous nozzles are arranged on the bottom wall of the ladle, and an inert gas is fed into the venturi mixing part. The venturi mixing part can mix the inert gas with the degassing agent discharged from the feeding pipe and feed the mixed gas into the porous nozzle through a hollow pipe, and then the mixed gas is sprayed out from the porous nozzle at the bottom of the ladle to make the degassing agent react chemically with the gas (especially hydrogen) in the molten metal, so as to effectively remove the dissolved gas such as hydrogen and nitrogen in the molten metal, improve the metal quality, reduce the solubility of the gas, and precipitate and discharge the gas. The defects such as pores and bubbles in the casting are effectively controlled, the internal structure of the metal is more compact, and the strength and toughness of the casting are improved.

[0017] (2) The present scheme is provided with a stirring and flow-feeding section. By feeding an inert gas into the second venturi mixing section, the second venturi mixing section can mix the inert gas with the flow improver discharged from the second feed pipe and feed the mixed gas into the rotary joint through a hollow pipe. The mixed gas enters the second porous nozzle from the rotary joint and is discharged. The flow improver reduces the viscosity of the molten metal and promotes its flow. At the same time, it can also promote the effect of the degassing agent. The addition of the flow improver can help the molten metal to remove gas more easily, especially under high temperature conditions. The improver enhances the fluidity of the metal, which helps the gas to diffuse and rise in the melt, thereby improving the degassing efficiency.

[0018] (3) This scheme is provided with two upper and lower stirring paddles, and the height of the upper stirring paddle can be adjusted through the height adjustment unit so that the upper stirring paddle can be located on the liquid surface. Through the turbulent effect of the lower stirring paddle at the bottom, the molten metal forms a strong upward flow. The bubbles will quickly rise to the surface with the help of the metal flow. The upper stirring paddle on the liquid surface can form a forward or reverse flow to prevent bubbles from gathering on the surface or forming a bubble film, thereby helping the bubbles to be discharged quickly, effectively increasing the rising speed of bubbles in the molten metal, optimizing the degassing effect, and ensuring the stability of the metal quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the lower end structure of the support frame of the present invention; Figure 3 It is a schematic diagram of the structure of the driving part and the venturi mixing part of the present invention; Figure 4 It is a schematic diagram of the upper structure of the support frame of the present invention; Figure 5 It is a schematic diagram of the lower end structure of the ladle of the present invention; Figure 6 It is a schematic diagram of the internal structure of the ladle of the present invention; Figure 7 It is a schematic diagram of the structure of the stirring and flow-feeding part of the present invention; Figure 8 It is a schematic diagram of the structure of the height adjustment unit of the present invention; Fig. 9 It is a schematic diagram of the structure of the sealing assembly of the present invention.

[0020] Description of the numbers in the figure: 1. Base; 2. X-axis moving part; 3. Z-axis moving part; 4. Tilt part; 5. Support frame; 51. Hollow pipe; 52. Screw conveying part 1; 53. Feeding pipe 1; 54. Venturi mixing part 1; 55. Pipeline 1; 56. Limit extension part; 57. Pipeline 2; 58. Driving part; 581. Motor 1; 582. Synchronous wheel 1; 583. Synchronous belt; 584. Synchronous wheel 2; 585. Rotary joint; 586. Bracket 1; 587. Screw conveying part 2; 588. Feeding pipe 2; 589. Venturi mixing part 2; 6. Melt storage unit; 61. Ladle; 611. Discharge port; 612. Movable slot; 62. Extended flow channel; 63. Cover; 64. Multi-hole nozzle 1; 641. One-way valve 1; 65. Stirring and conveying part; 651. One-way valve 2; 652. Multi-hole nozzle 2; 653. Lower stirring paddle; 654. Centering rod; 66. Height adjustment unit; 661. Bracket 2; 662. Guide rod 1; 663. Screw rod 1; 664. Motor 2; 665. Motor 3; 666. Lifting seat 1; 667. Hollow rotating rod; 668. Upper stirring paddle; 69. Liquid level sensor; 7. Mounting plate; 8. Feeding guide part; 9. Parting and closing mold part; 10. Mesh bubble breaking plate; 11. Ultrasonic transducer part; 12. Ultrasonic generating part; 13. Negative pressure interface; 14. Sealing and sealing assembly; 141. Bracket 3; 142. Motor 4; 143. Screw rod 2; 144. Guide rod 2; 145. Lifting seat 2; 146. Sealing plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 9A casting device for a balanced suspension shaft shell of a mine car comprises a base 1, an X-axis moving part 2 connected to one side of the base 1, a Z-axis moving part 3 fixed to one side of a moving end of the X-axis moving part 2, a tilting part 4 fixed to one side of a moving end of the Z-axis moving part 3, a support frame 5 fixed to one side of a rotating end of the tilting part 4, a mounting plate 7 connected to one side of the base 1 for fixing a mold, and a mold splitting and mold splitting part 9 for realizing mold closing and mold splitting (composed of multiple structures such as a hydraulic cylinder, a guide rod, and a movable mold mounting seat, the fixed mold is mounted on the mounting plate 7, the movable mold is mounted on the movable mold mounting seat, and the movable mold mounting seat is driven by the hydraulic cylinder to move to realize mold closing and mold splitting, which belongs to a mature existing technology and will not be described here). A molten storage unit 6 is connected to one side of the support frame 5, and the molten storage unit 6 includes a ladle 61 fixed to one side of the support frame 5, a plurality of one-way valves 641 fixed to the lower end of the ladle 61, a plurality of porous nozzles 64 fixed to the inner bottom wall of the ladle 61 and respectively connected to the plurality of one-way valves 641, an extended flow channel 62 fixed to the outer surface of the ladle 61, a cover body 63 fixed to the upper end of the ladle 61, a discharge port 611 opened inside the ladle 61, and a negative pressure interface 13 opened at the upper end of the cover body 63; A plurality of hollow pipes 51 are fixedly connected inside the support frame 5, and one ends of the plurality of hollow pipes 51 extend from one side of the support frame 5 and are respectively inserted into a plurality of one-way valves 641, a plurality of spiral conveying parts 52 are fixedly connected to one side of the support frame 5, and a discharge pipe 53 is fixedly connected to the discharge end of the spiral conveying part 52, and the other end of the discharge pipe 53 is connected to a venturi mixing part 54, and the plurality of venturi mixing parts 54 are respectively connected to the other ends of the plurality of hollow pipes 51 through a plurality of pipes 55.

[0023] A feed guide 8 (made of Figure 1 It can be seen that the feed guide 8 is composed of a frame and a conical guide end fixed in the middle of the frame, which is convenient for introducing the molten metal discharged from the inclined ladle 61 into the feed port of the mold), and the feed guide 8 is located above the feed port of the mold.

[0024] A plurality of position limiting extensions 56 for limiting the position of the ladle 61 are fixedly connected to the upper end of the support frame 5 to prevent the ladle 61 from being offset during the tilting process.

[0025] The upper ends of the cover body 63 and the ladle 61 are both provided with a movable groove 612, and the upper end of the cover body 63 is connected to a sealing assembly 14, which includes a bracket three 141 fixedly connected to the upper end of the cover body 63, a motor four 142 fixedly connected to the upper end of the bracket three 141, a screw rod two 143 whose two ends are rotatably connected to one side of the bracket three 141 and the upper end of the cover body 63, a guide rod two 144 whose two ends are respectively fixed to one side of the bracket three 141 and the upper end of the cover body 63, a lifting seat two 145 screwed to the outside of the screw rod two 143 and slidably sleeved on the outside of the guide rod two 144, a sealing plate 146 fixedly connected to the lower end of the lifting seat two 145 and inserted into the movable groove 612, and the output shaft of the motor four 142 passes through the bracket three 141 and is fixedly connected to one end of the screw rod two 143.

[0026] By adopting the above technical solution, the input end of the Venturi mixing section 54 (a Venturi tube composed of a feed end, a throat and a diffusion end, which belongs to the mature existing technology and will not be described here) is connected to an air pipe, and the inert gas enters the Venturi mixing section 54 from the air pipe, and is passed through the spiral conveying section 52 (a spiral conveyor, which belongs to the mature existing technology and is composed of a motor, a feeding screw and other structures, which will not be described here) to degassing agents (the following two types are commonly used, chloride degassing agents: chloride degassing agents can usually react chemically with hydrogen and oxygen dissolved in metals. Especially in metals such as steel and cast iron, chlorides can react with hydrogen and oxygen ions in the gas to generate chloride compounds, and precipitate gases from the metal; fluoride degassing agents: fluorides can usually react with gases in metals to generate volatile fluorides. For example, in the casting process of aluminum alloys, fluorides can remove dissolved hydrogen and oxygen in aluminum. Fluorides can also generate bubbles through chemical reactions to help the solution The degassing agent is transported by the spiral conveying part 52 (the degassing gas is precipitated from the molten metal). In the present application, the degassing agent is in powder or granular form, and is transported by the spiral conveying part 52 and enters the feeding pipe 53. The degassing agent can also be in liquid form. If the degassing agent is liquid, the spiral conveying part 52 can be replaced with a pump body to realize the delivery of the liquid degassing agent into the feeding pipe 53. The degassing agent can be discharged from the feeding pipe 53 and mixed with the gas passing through the throat of the venturi mixing part 54 and then enter the hollow pipe 5 1, enters the one-way valve 641 from the hollow pipe 51, and enters the porous nozzle 64 from the one-way valve 641 (a bottom blowing gas nozzle or an argon nozzle can be used, which is the same as the method used for blowing argon at the bottom of the ladle 61, which belongs to the mature existing technology and will not be repeated here), the gas is ejected from the porous nozzle 64, and the gas and the degassing agent are discharged and enter the molten metal. The main function of the degassing agent is to chemically react with the gas (especially hydrogen) in the molten metal to remove it from the metal.Degassing agents are usually solid or liquid substances, such as chlorides, fluorides, certain metal oxides, etc. Their reaction modes include adsorption, chemical bonding or adsorption reaction. Degassing agents do not necessarily have to be completely dissolved in the metal liquid, but contact and react with the bubbles in the metal. The degassing agent reacts chemically with the gas dissolved in the metal to effectively remove dissolved gases such as hydrogen and nitrogen in the molten metal, improve the quality of the metal, reduce the solubility of the gas, and precipitate and discharge the gas. The defects such as pores and bubbles in the casting are effectively controlled, the internal structure of the metal is denser, and the strength and toughness of the casting are improved. The negative pressure interface 13 is externally connected to the The negative pressure pipeline is connected to the negative pressure device. When the negative pressure device is working, negative pressure can be formed in the ladle 61 to help the gas in the melting technology to be discharged. The gas discharged from the molten metal can be sucked out by the negative pressure pipeline. When casting is required, the X-axial moving part 2 and the Z-axial moving part 3 are controlled to work to adjust the X-axial position and the Z-axial position of the ladle 61 respectively. After moving it to the appropriate position, the motor 4 142 is controlled to work to drive the screw rod 2 143 to rotate. The rotation of the screw rod 2 143 drives the lifting seat 2 145 and the sealing plate 146 to rise. After the sealing plate 146 rises, the discharge port 611 can be opened, and the tilting part 4 (mainly It is composed of multiple structures such as a tilting frame, a hydraulic cylinder / oil cylinder, a support shaft, a limit device, etc. The tilting frame: a frame structure that supports the entire ladle 61, usually welded from steel, with high strength and heat resistance. It is usually installed on the foundation of the equipment, bearing the weight of the ladle 61 and providing tilting support; Hydraulic cylinder / oil cylinder: used to control the tilt of the ladle 61. The function of the hydraulic cylinder is to provide sufficient force to tilt the ladle 61 to the desired angle. The hydraulic cylinder can be a single-cylinder or double-cylinder configuration, connected to the tilting frame; Support shaft: It is the rotation axis of the ladle 61, usually installed at the bottom or side of the ladle 61. When the hydraulic cylinder pushes the tilting frame, the ladle 61 moves. The ladle 61 rotates around the support shaft to complete the tilting action; limit device: In order to ensure that the ladle 61 does not tilt excessively, the limit device is used to set the maximum tilt angle. It can be a mechanical limit block or a sensor to prevent the ladle 61 from exceeding the design range during the tilting process; it is a common device in continuous casting equipment and will not be described here) to drive the support frame 5 and the ladle 61 to tilt, and the molten metal in the ladle 61 is discharged from the discharge port 611 and flows into the feed guide 8, flows out from the feed guide 8 and enters the feed port of the mold. After being formed in the mold, the mold separation and closing part 9 works to separate the two molds, and the product can be taken out to complete the casting.

[0027] like Figure 3-Figure 7As shown, the inner wall of the ladle 61 is connected to a stirring and flow delivery part 65, and the stirring and flow delivery part 65 includes a second porous nozzle 652 rotatably connected to the inner bottom wall of the ladle 61 (a bottom blowing gas nozzle or an argon nozzle can be used, which is the same as the method used for blowing argon at the bottom of the ladle 61, which belongs to a mature existing technology and is not repeated here), a second one-way valve 651 fixedly connected to the lower end of the second porous nozzle 652 and rotatably connected to the inside of the ladle 61, and a plurality of lower stirring paddles 653 fixedly connected to the outer surface of the second porous nozzle 652. The lower end of the support frame 5 is fixedly connected to A bracket 586 is provided, and a rotary joint 585 is fixedly connected to the inner wall of the bracket 586, the inner tube of the rotary joint 585 passes through the support frame 5, is inserted into the inside of the one-way valve 651 and is fixedly connected to the one-way valve 651, a spiral conveying part 587 is fixedly connected to the upper end of the support frame 5, and a discharge pipe 588 is fixedly connected to the discharge end of the spiral conveying part 587, the other end of the discharge pipe 588 is connected to a Venturi mixing part 589, and the Venturi mixing part 589 is connected to the input end of the rotary joint 585 through a pipe 57.

[0028] The lower end of the support frame 5 is also connected to a driving part 58 for driving the inner tube of the rotary joint 585 to rotate, and the driving part 58 includes a synchronous wheel 1 582 and a synchronous wheel 2 584 rotatably connected to the lower end of the support frame 5, and a synchronous belt 583 connecting the synchronous wheel 1 582 with the synchronous wheel 2 584, the inner ring of the synchronous wheel 2 584 is fixedly connected to the outer surface of the inner tube of the rotary joint 585, and the upper end of the support frame 5 is fixedly connected to a motor 1 581, and the output shaft of the motor 1 581 passes through the support frame 5 and is connected to the synchronous wheel 1 582.

[0029] By adopting the above technical solution, when the motor 1 581 works to drive the synchronous wheel 1 582 to rotate, the synchronous wheel 1 582 drives the synchronous wheel 2 584 to rotate through the synchronous belt 583, the rotation of the synchronous wheel 2 584 drives the inner tube of the rotary joint 585 to rotate, the rotation of the inner tube drives the one-way valve 2 651 and the porous nozzle 2 652 to rotate, and the lower stirring paddle 653 outside the porous nozzle 2 652 can form turbulence at the bottom of the molten metal, the input end of the Venturi mixing part 2 589 is connected to the air pipe, and the inert gas enters the Venturi mixing part 2 589 from the air pipe. The spiral conveying part 2 587 is used for the flow improver (such as powder or particles of ferrosilicon, calcium iron, etc., ferrosilicon: ferrosilicon can be dissolved at high temperature to release silicon element, and silicon element can change the surface tension of the metal and reduce the viscosity. The flow improver is discharged from the feed pipe 588 and enters the venturi mixing section 589 to mix with the gas. After mixing, it enters the one-way valve 651 from the rotary joint 585, enters the porous nozzle 652 from the one-way valve 651 and is then discharged from the porous nozzle 652. The flow improver reduces the viscosity of the molten metal and promotes its flow. At the same time, it can also promote the effect of the degassing agent. The addition of the flow improver can help the molten metal to remove gas more easily, especially under high temperature conditions. The improver helps the gas to diffuse and rise in the melt by enhancing the fluidity of the metal, thereby improving the degassing efficiency.

[0030] like Figure 7 and Figure 8 As shown, the upper end of the multi-hole nozzle 652 is fixedly connected with a centering rod 654, and the upper end of the cover body 63 is connected with a height adjustment unit 66, and the height adjustment unit 66 includes a bracket 661 fixedly connected to the upper end of the cover body 63, a screw rod 663 with two ends respectively connected to the inner side wall of the bracket 661 and the upper end of the cover body 63, a guide rod 662 with two ends respectively connected to the inner side wall of the bracket 661 and the upper end of the cover body 63, and a screw rod 663 screwed to the outside of the screw rod 663 and slidably sleeved on the outside of the guide rod 662. The lifting seat 1 666 of the part, the motor 2 664 fixedly connected to the upper end of the bracket 2 661, the motor 3 665 fixedly connected to the upper end of the lifting seat 1 666, the hollow rotating rod 667 sleeved on the outside of the centering rod 654, and the upper stirring paddle 668 fixedly connected to the outer surface of the hollow rotating rod 667, and the output shaft of the motor 2 664 passes through the bracket 2 661 and is fixedly connected to one end of the screw 1 663, and one end of the hollow rotating rod 667 passes through the cover body 63 to extend outward and is fixedly connected to the output shaft of the motor 3 665.

[0031] A liquid level sensor 69 is fixedly connected to the interior of the cover body 63 , and a detection end of the liquid level sensor 69 extends into the interior of the ladle 61 .

[0032] A through slot for the hollow rotating rod 667 to pass through is formed inside the cover body 63 , and a rubber ring is fixedly connected to the inner wall of the through slot, and the inner wall of the rubber ring contacts the outer surface of the hollow rotating rod 667 .

[0033] By adopting the above technical solution, the liquid level of the molten metal in the ladle 61 can be detected by the liquid level sensor 69 (a high-temperature resistant float liquid level sensor can be selected, and the float, sensor housing and connecting parts are generally made of high-temperature resistant alloys (such as Inconel, nickel-based alloys), ceramics or special high-temperature resistant stainless steel, which belongs to mature existing technologies and will not be repeated here). After the liquid level of the molten metal is detected, the control motor 2 664 is operated and drives the screw rod 1 663 to rotate. The rotation of the screw rod 1 663 drives the lifting seat 1 666, the hollow rotating rod 667 and the upper stirring paddle 668 to descend, so that the upper stirring paddle 668 It can be located on the liquid surface. The operation of motor three 665 can drive the hollow rotating rod 667 and the upper stirring paddle 668 to rotate. The rotation speed of the upper stirring paddle 668 is slower, and the rotation speed of the lower stirring paddle 653 is faster. Through the turbulent effect of the lower stirring paddle 653 at the bottom, the molten metal forms a strong upward flow. The bubbles will quickly rise to the surface with the help of the metal flow. The upper stirring paddle 668 on the liquid surface can form a forward or reverse flow to avoid bubbles from gathering on the surface or forming a bubble film, thereby helping the bubbles to be discharged quickly, effectively increasing the rising speed of bubbles in the molten metal, optimizing the degassing effect, and ensuring the stability of metal quality.

[0034] like Figure 2 , Figure 5 and Figure 8 As shown, a mesh bubble-breaking plate 10 is fixedly connected to the inner wall of the ladle 61, and the mesh bubble-breaking plate 10 is located above the second porous nozzle 652, and a avoidance groove for accommodating a centering rod 654 is opened inside the mesh bubble-breaking plate 10, an ultrasonic transducer part 11 is fixedly connected to the outer surface of the ladle 61, and a conduction plate is fixedly connected to the inside of the ladle 61, and both ends of the conduction plate are respectively connected to the ultrasonic transducer part 11 and the mesh bubble-breaking plate 10, and an ultrasonic generating part 12 connected to the ultrasonic transducer part 11 is fixedly connected to the upper end of the support frame 5.

[0035] By adopting the above technical solution, the ultrasonic generating part 12 generates a high-frequency electric signal and outputs it to the ultrasonic transducer part 11. The ultrasonic transducer part 11 converts the electric signal provided by the ultrasonic generating part 12 into a mechanical wave and transmits it to the mesh bubble breaking plate 10 through the conduction plate. When the gas discharged from the porous nozzle 1 64 and the porous nozzle 2 652 forms large bubbles in the molten metal, when the large bubbles pass through the mesh bubble breaking plate 10, the ultrasonic wave can cause cavitation inside the bubbles through high-frequency oscillation, so that the bubbles are split into smaller bubbles, which helps the bubbles to be more evenly distributed in the molten metal. The uniform distribution of bubbles can improve the degassing effect, reduce the accumulation of oxides and gases in the molten metal, and the fine bubbles can more effectively contact the dissolved gas in the molten metal, thereby improving the gas removal efficiency.

[0036] Method of use: The input end of the venturi mixing part 54 is connected to an air pipe, and the inert gas enters the venturi mixing part 54 from the air pipe. The degassing agent can be transported through the spiral conveying part 52. In the present application, the degassing agent is in powder or granular form, and is transported by the spiral conveying part 52 and enters the feeding pipe 53. The degassing agent can also be in liquid form. If the degassing agent is liquid, the spiral conveying part 52 can be replaced with a pump body to realize the delivery of the liquid degassing agent into the feeding pipe 53. The degassing agent can be discharged from the feeding pipe 53 and mixed with the gas passing through the throat of the venturi mixing part 54, and then enter the hollow pipe 51, enter the one-way valve 641 from the hollow pipe 51, and enter the porous nozzle 64 from the one-way valve 641. The gas is ejected from the porous nozzle 64, and the gas and the degassing agent are discharged and enter the molten metal. The negative pressure interface 13 is connected to a negative pressure pipe, and the negative pressure pipe is connected to the negative pressure pipe. The equipment is connected. When the negative pressure equipment is working, negative pressure can be formed in the ladle 61 to help the gas in the melting technology to be discharged. The gas discharged from the molten metal can be sucked out by the negative pressure pipeline. When casting is required, the X-axial moving part 2 and the Z-axial moving part 3 are controlled to work to adjust the X-axial position and the Z-axial position of the ladle 61 respectively. After it moves to the appropriate position, the motor 4 142 is controlled to work to drive the screw rod 2 143 to rotate. The rotation of the screw rod 2 143 drives the lifting seat 2 145 and the sealing plate 146 to rise. After the sealing plate 146 rises, the discharge port 611 can be opened. The tilting part 4 is controlled to work to drive the support frame 5 and the ladle 61 to tilt. The molten metal in the ladle 61 is discharged from the discharge port 611 and flows into the feed guide part 8, flows out from the feed guide part 8 and enters the feed port of the mold. After being formed in the mold, the mold separation and clamping part 9 works to separate the two molds, and the product can be taken out to complete the casting.

[0037] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A casting device for a balanced suspension shaft housing of a mine car, comprising a base (1), an X-axis moving part (2) connected to one side of the base (1), a Z-axis moving part (3) fixed to one side of a moving end of the X-axis moving part (2), a tilting part (4) fixed to one side of the moving end of the Z-axis moving part (3), a support frame (5) fixed to one side of a rotating end of the tilting part (4), a mounting plate (7) connected to one side of the base (1) for fixing a mold, and a mold splitting and mold closing part (9) for realizing mold closing and mold opening, characterized in that: A molten storage unit (6) is connected to one side of the support frame (5), and the molten storage unit (6) comprises a steel ladle (61) fixedly connected to one side of the support frame (5), a plurality of one-way valves (641) fixedly connected to the lower end of the steel ladle (61), a plurality of multi-hole nozzles (64) fixedly connected to the inner bottom wall of the steel ladle (61) and respectively connected to the plurality of one-way valves (641), an extended flow channel (62) fixedly connected to the outer surface of the steel ladle (61), a cover body (63) fixedly connected to the upper end of the steel ladle (61), a discharge port (611) opened inside the steel ladle (61), and a negative pressure interface (13) opened at the upper end of the cover body (63); A plurality of hollow pipes (51) are fixedly connected inside the support frame (5), and one end of the plurality of hollow pipes (51) extends from one side of the support frame (5) and is respectively inserted into a plurality of one-way valves (641), and a plurality of spiral conveying parts (52) are fixedly connected to one side of the support frame (5).

2. The casting device for a balanced suspension axle housing of a mine car according to claim 1, characterized in that: The discharge end of the spiral conveying part (52) is fixedly connected to a discharge pipe (53), the other end of the discharge pipe (53) is connected to a Venturi mixing part (54), and a plurality of Venturi mixing parts (54) are respectively connected to the other ends of a plurality of hollow pipes (51) through a plurality of pipes (55), and a feed guide part (8) is fixedly connected to one side of the base (1), and the feed guide part (8) is located above the feed port of the mold.

3. The casting device for a balanced suspension axle housing of a mine car according to claim 2, characterized in that: A plurality of position limiting extension portions (56) for limiting the position of the steel ladle (61) are fixedly connected to the upper end of the support frame (5).

4. The casting device for a mine car balanced suspension axle housing according to claim 3 is characterized in that: The inner wall of the steel ladle (61) is connected to a stirring and flow-feeding portion (65), and the stirring and flow-feeding portion (65) comprises a second porous nozzle (652) rotatably connected to the inner bottom wall of the steel ladle (61), a second one-way valve (651) fixedly connected to the lower end of the second porous nozzle (652) and rotatably connected to the inside of the steel ladle (61), and a plurality of lower stirring paddles (653) fixedly connected to the outer surface of the second porous nozzle (652), the lower end of the support frame (5) is fixedly connected to a bracket (586), and a rotating joint (586) is fixedly connected to the inner wall of the bracket (586). 5), the inner tube of the rotary joint (585) passes through the support frame (5) and is inserted into the inside of the one-way valve (651) and is fixedly connected to the one-way valve (651). The upper end of the support frame (5) is fixedly connected to the second spiral conveying part (587), and the discharge end of the second spiral conveying part (587) is fixedly connected to the second discharge pipe (588), and the other end of the second discharge pipe (588) is connected to the second Venturi mixing part (589), and the second Venturi mixing part (589) is connected to the input end of the rotary joint (585) through the second pipeline (57).

5. The casting device for a balanced suspension axle housing of a mine car according to claim 4, characterized in that: The lower end of the support frame (5) is also connected to a driving unit (58) for driving the inner tube of the rotary joint (585) to rotate, and the driving unit (58) comprises a synchronous wheel 1 (582) and a synchronous wheel 2 (584) rotatably connected to the lower end of the support frame (5), and a synchronous belt (583) connecting the synchronous wheel 1 (582) and the synchronous wheel 2 (584), the inner ring of the synchronous wheel 2 (584) is fixedly connected to the outer surface of the inner tube of the rotary joint (585), and the upper end of the support frame (5) is fixedly connected to a motor 1 (581), and the output shaft of the motor 1 (581) passes through the support frame (5) and is connected to the synchronous wheel 1 (582).

6. The casting device for a balanced suspension axle housing of a mine car according to claim 5, characterized in that: The upper end of the multi-hole nozzle (652) is fixedly connected to a centering rod (654), the upper end of the cover (63) is connected to a height adjustment unit (66), and the height adjustment unit (66) includes a bracket (661) fixedly connected to the upper end of the cover (63), a screw rod (663) whose two ends are rotatably connected to the inner side wall of the bracket (661) and the upper end of the cover (63), a guide rod (662) whose two ends are fixedly connected to the inner side wall of the bracket (661) and the upper end of the cover (63), and a screw rod (662) screwed to the outside of the screw rod (663) and slidably sleeved on the outside of the guide rod (662). A lifting seat (666), a motor (664) fixedly connected to the upper end of a bracket (661), a motor (665) fixedly connected to the upper end of a lifting seat (666), a hollow rotating rod (667) sleeved on the outside of a centering rod (654), and an upper stirring paddle (668) fixedly connected to the outer surface of the hollow rotating rod (667), wherein the output shaft of the motor (664) passes through the bracket (661) and is fixedly connected to one end of the screw (663), and one end of the hollow rotating rod (667) passes through the cover body (63) to extend outward and is fixedly connected to the output shaft of the motor (665).

7. The casting device for a balanced suspension axle housing of a mine car according to claim 6, characterized in that: A liquid level sensor (69) is fixedly connected to the interior of the cover body (63), and a detection end of the liquid level sensor (69) extends into the interior of the ladle (61).

8. The casting device for a mine car balanced suspension axle housing according to claim 7, characterized in that: A through slot for the hollow rotating rod (667) to pass through is provided inside the cover body (63), and a rubber ring is fixedly connected to the inner wall of the through slot, and the inner wall of the rubber ring is in contact with the outer surface of the hollow rotating rod (667).

9. The casting device for a balanced suspension axle housing of a mine car according to claim 8, characterized in that: The inner wall of the ladle (61) is fixedly connected with a mesh bubble-breaking plate (10), and the mesh bubble-breaking plate (10) is located above the second porous nozzle (652); a avoidance groove for accommodating a centering rod (654) is provided inside the mesh bubble-breaking plate (10); an ultrasonic transducer (11) is fixedly connected to the outer surface of the ladle (61), and a conduction plate is fixedly connected inside the ladle (61); two ends of the conduction plate are respectively connected to the ultrasonic transducer (11) and the mesh bubble-breaking plate (10); and an ultrasonic generating part (12) connected to the ultrasonic transducer (11) is fixedly connected to the upper end of the support frame (5).

10. The casting device for a balanced suspension axle housing of a mine car according to claim 9, characterized in that: The upper ends of the cover body (63) and the ladle (61) are both provided with a movable groove (612), and the upper end of the cover body (63) is connected to a sealing assembly (14), wherein the sealing assembly (14) comprises a bracket three (141) fixedly connected to the upper end of the cover body (63), a motor four (142) fixedly connected to the upper end of the bracket three (141), a screw rod two (143) whose two ends are rotatably connected to one side of the bracket three (141) and the upper end of the cover body (63), A guide rod 2 (144) whose two ends are respectively fixed to one side of the bracket 3 (141) and the upper end of the cover body (63), a lifting seat 2 (145) screwed to the outside of the screw rod 2 (143) and slidably sleeved on the outside of the guide rod 2 (144), a sealing plate (146) fixed to the lower end of the lifting seat 2 (145) and inserted into the movable groove (612), and an output shaft of the motor 4 (142) passes through the bracket 3 (141) and is fixed to one end of the screw rod 2 (143).

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