Special-shaped steel casting mold for machining subway bogie

Abstract

The utility model relates to the technical field of steel casting molds, and discloses a special-shaped steel casting mold for machining a subway bogie. The special-shaped steel casting mold for machining the subway bogie comprises a bottom plate, a water tank is fixedly installed above the bottom plate, a heat pipe is installed at the rear end of the water tank in a penetrating mode, heat dissipation fins are installed at the rear end of the heat pipe in a penetrating mode, and when pouring is completed, the liquid level of molten iron is higher than an annular protrusion arranged in the center of an opening structure of a movable cover and a sealing cover. After molten iron is solidified, the sealing cover and the movable cover are lifted through the hydraulic piston, the casting can be kept in an embedded state with the sealing cover and the movable cover under the influence of the water gap protruding structure, and therefore the casting can be conveniently taken out of a mold cavity; and the casting can be taken down from the rear side of the sealing cover by unscrewing the bolt and the nut which keep the connection between the sealing cover and the movable cover, so that the casting can be prevented from being clamped in the mold cavity to influence the demolding operation.

Description

Technical Field

[0001] The utility model relates to the technical field of steel casting moulds, in particular to a special-shaped steel casting mould for machining subway bogies. Background Art

[0002] A casting mold is a material that is made of other easily formed materials in advance in order to obtain the structural shape of a part. The mold is then placed in a sand mold, forming a cavity with the same size as the part structure. A flowing liquid is then poured into the cavity, and after the liquid cools and solidifies, a part with the same shape and structure as the mold can be formed.

[0003] The existing Chinese utility model patent with reference publication number CN212191122U discloses a multi-module integrated steel casting mold, comprising a base, a support frame, a first mold, a second mold, a cylinder, a piston rod, a groove, a slider, a chute, a pouring port, a fixed block, a fixed groove, a water inlet, a water outlet, a cooling water pipe, and a support pad. The bottom of the groove is provided with a chute, the first and second molds are movably arranged above the base via a slider, one end of the piston rod is connected to the cylinder, a pouring port is provided above the first mold, fixed blocks are fixed above and below one side of the first mold, and a fixed groove is fixed above and below one side of the second mold, a water inlet and a water outlet are provided on the surface of each mold, a cooling water pipe is provided inside the bottom of the first and second molds, and multiple support pads are provided on the lower surface of the base. The utility model designs a steel casting mold, wherein the cylinder drives the piston rod to slide, thereby merging the first and second molds, casting steel parts and facilitating the removal of the steel castings by workers.

[0004] Existing cast steel molds require a long time to cool after molten iron pouring, and demolding can only be performed after the molten iron solidifies, resulting in low casting efficiency. At the same time, the casting may get stuck inside the mold during demolding, affecting the demolding operation. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the shortcomings of the existing technology, the utility model provides a special-shaped cast steel mold for processing subway bogies, which has the advantages of easy demoulding and shortening the cooling time of the casting, thereby solving the above-mentioned technical problems.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special-shaped cast steel mold for processing a subway bogie, comprising: a base plate, a water tank fixedly installed above the base plate, a heat pipe inserted into the rear end of the water tank, a heat fin inserted into the rear end of the heat pipe, a limiting frame fixedly installed on the rear side of the water tank, a fixing frame fixedly installed on the left side of the limiting frame, a fixing frame fixedly installed inside the fixing frame, a motor inserted into the center of the fixing frame, a fan blade inserted into the outer side of the rotating shaft of the motor, a liquid pump fixedly installed on the front side of the water tank, a guide pipe fixedly installed on the front side of the liquid pump, a support frame fixedly installed above the base plate, a bottom mold fixedly installed above the support frame, a movable cover movably installed above the bottom mold, a sealing cover movably installed on the front side of the movable cover, a limiting frame fixedly installed above the base plate, and a hydraulic piston fixedly installed on the upper end of the limiting frame; the water tank can receive cooling water.

[0009] As an optimal technical solution of the present invention, the rear end of the heat pipe passes through the rear end facade of the water tank and is located on the rear side of the water tank. The heat dissipation fins are installed equidistantly in front and back on the part of the heat pipe located outside the water tank. The upper and lower ends of the heat dissipation fins are fixedly connected to the limit frame; the heat dissipation fins can facilitate heat exchange.

[0010] As an optimal technical solution of the present invention, the bottom surface of the fixed frame is fixedly connected to the base plate, the motor is fixedly connected to the fixed frame through the fixed frame, and the air outlet of the fan blade points to the heat dissipation fins; the fixed frame can limit the position of the fixed frame.

[0011] As an optimal technical solution of the present invention, one end of the guide tube is connected to the liquid pump, and the other end is connected to the water tank. The upper part of the guide tube is located inside the bottom mold, and the upper part of the guide tube matches the shape of the mold cavity; the guide tube can facilitate cooling water to take away the heat of the bottom mold.

[0012] As a preferred technical solution of the present invention, the support frame is installed equidistantly above the base plate, and the bottom mold is fixedly connected to the base plate through the support frame; the support frame can support the bottom mold.

[0013] As the preferred technical solution of the present invention, the movable cover is movably connected to the sealing cover by bolts and nuts, the contact surface between the movable cover and the sealing cover is provided with a half-cylindrical opening structure, and the center of the opening structure of the movable cover and the sealing cover is provided with an annular protrusion; the sealing cover can close the top of the bottom mold.

[0014] As a preferred technical solution of the present invention, the hydraulic piston is symmetrically installed on the top of the limit frame, and the bottom end of the hydraulic piston is fixedly connected to the top surface of the cover; the hydraulic piston can facilitate the adjustment of the position of the cover.

[0015] Compared with the prior art, the present invention provides a special-shaped cast steel mold for machining subway bogies, which has the following beneficial effects:

[0016] 1. The utility model is provided with a guide tube, one end of which is connected to a liquid pump and the other end is connected to a water tank. The upper part of the guide tube is located inside the bottom mold, and the upper part of the guide tube matches the shape of the mold cavity. The cooling water received in the water tank is transported to the inside of the guide tube by the liquid pump. The cooling water will enter the bottom mold under the guidance of the guide tube, circle the mold cavity, and then flow back to the water tank. The heat absorbed by the cooling water will be transferred to the heat pipe installed through the rear end of the water tank. When one end of the heat pipe is heated, the cooling medium in the capillary tube evaporates rapidly, and the steam flows to the other end of the heat pipe under a small pressure difference and releases heat. The fan blades are driven by the motor to rotate, so that the fan blades generate an airflow blowing towards the heat dissipation fins, thereby re-condensing the cooling medium in the heat pipe into liquid, and the liquid then flows back to the evaporation section along the porous material by capillary force. This cycle is repeated to cool the cooling water, and the cooling water will re-enter the interior of the guide tube under the action of the liquid pump, thereby shortening the time required for the molten iron to solidify.

[0017] 2. The utility model provides a movable cover, which is movably connected to the sealing cover by bolts and nuts. The contact surface between the movable cover and the sealing cover is provided with a half-cylindrical opening structure, and the center of the opening structure of the movable cover and the sealing cover is provided with an annular protrusion. When pouring, molten iron is injected into the mold cavity of the bottom mold through the opening structure of the movable cover and the sealing cover, and when pouring is completed, the liquid level of the molten iron is made higher than the annular protrusion provided in the center of the opening structure of the movable cover and the sealing cover, so that an annular protrusion structure appears on the upper end of the water outlet of the casting after solidification. After the molten iron solidifies, the sealing cover and the movable cover are lifted by the hydraulic piston. The casting will remain in an embedded state with the sealing cover and the movable cover under the influence of the water outlet protrusion structure, thereby facilitating the removal of the casting from the mold cavity. The bolts and nuts that keep the sealing cover and the movable cover connected can be unscrewed to remove the casting from the back side of the sealing cover. This method can prevent the casting from being stuck in the mold cavity and affecting the demoulding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the water tank installation structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the bottom mold installation structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the sealing cover and the hydraulic piston of the utility model;

[0022] Among them: 1. Base plate; 11. Water tank; 12. Heat pipe; 13. Heat dissipation fins; 14. Limit frame; 15. Fixed frame; 16. Fixed frame; 17. Motor; 18. Fan blades; 19. Liquid pump; 110. Guide pipe; 2. Support frame; 21. Bottom mold; 22. Movable cover; 23. Sealing cover; 24. Limit frame; 25. Hydraulic piston. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] See also Figure 1 - Figure 4 In this embodiment, a special-shaped cast steel mold for processing a subway bogie includes: a base plate 1, a water tank 11 is fixedly installed on the top of the base plate 1, a heat pipe 12 is inserted into the rear end of the water tank 11, and a heat dissipation fin 13 is inserted into the rear end of the heat pipe 12, a limit frame 14 is fixedly installed on the rear side of the water tank 11, a fixing frame 15 is fixedly installed on the left side of the limit frame 14, a fixing frame 16 is fixedly installed inside the fixing frame 15, a motor 17 is inserted into the center of the fixing frame 16, and a fan blade 18 is inserted into the outer side of the rotating shaft of the motor 17, a liquid pump 19 is fixedly installed on the front side of the water tank 11, and a guide pipe 110 is fixedly installed on the front side of the liquid pump 19.

[0027] The rear end of the heat pipe 12 passes through the rear end vertical surface of the water tank 11 and is located on the rear side of the water tank 11. The heat dissipation fins 13 are installed equidistantly in the front and rear parts of the heat pipe 12 outside the water tank 11. The upper and lower ends of the heat dissipation fins 13 are fixedly connected to the limit frame 14. The bottom surface of the fixed frame 15 is fixedly connected to the base plate 1. The motor 17 is fixedly connected to the fixed frame 15 through the fixing bracket 16. The air outlet of the fan blade 18 points to the heat dissipation fin 13. One end of the guide pipe 110 is connected to the liquid pump 19, and the other end is connected to the water tank 11. The upper part of the guide pipe 110 is located inside the bottom mold 21, and the upper part of the guide pipe 110 matches the shape of the mold cavity.

[0028] Specifically, the base plate 1 can support the water tank 11, the water tank 11 can receive cooling water, the heat pipe 12 can absorb the heat of the cooling water, the heat dissipation fins 13 can facilitate heat exchange, the limit frame 14 can limit the direction of air circulation, the fixed frame 15 can limit the position of the fixed frame 16, the fixed frame 16 can limit the position of the motor 17, the motor 17 can drive the fan blades 18 to rotate, and the fan blades 18 can generate airflow blowing towards the heat dissipation fins 13 when rotating. The liquid pump 19 can transport cooling water, and the guide pipe 110 can facilitate the cooling water to take away the heat of the bottom mold 21.

[0029] A support frame 2 is fixedly installed above the base plate 1, a bottom mold 21 is fixedly installed above the support frame 2, a movable cover 22 is movably installed above the bottom mold 21, a sealing cover 23 is movably installed on the front side of the movable cover 22, a limiting frame 24 is fixedly installed above the base plate 1, and a hydraulic piston 25 is fixedly installed on the upper end of the limiting frame 24.

[0030] The support frame 2 is installed equidistantly above the base plate 1 in the front and rear directions. The bottom mold 21 is fixedly connected to the base plate 1 through the support frame 2. The movable cover 22 is movably connected to the sealing cover 23 through bolts and nuts. The contact surface between the movable cover 22 and the sealing cover 23 is provided with a half-cylindrical opening structure, and an annular protrusion is provided in the center of the opening structure of the movable cover 22 and the sealing cover 23. The hydraulic piston 25 is symmetrically installed on the top of the limit frame 24 in the front and rear directions, and the bottom end of the hydraulic piston 25 is fixedly connected to the top surface of the sealing cover 23.

[0031] Specifically, the support frame 2 can support the bottom mold 21, the bottom mold 21 can facilitate casting, the movable cover 22 can facilitate the cancellation of the interlocking state between the casting and the cover 23, the cover 23 can close the top of the bottom mold 21, the limit frame 24 can limit the position of the hydraulic piston 25, and the hydraulic piston 25 can facilitate the adjustment of the position of the cover 23.

[0032] When in use, one end of the guide pipe 110 is connected to the liquid pump 19, and the other end is connected to the water tank 11. The upper part of the guide pipe 110 is located inside the bottom mold 21, and the upper part of the guide pipe 110 matches the shape of the mold cavity. The cooling water received in the water tank 11 is transported to the inside of the guide pipe 110 through the liquid pump 19. The cooling water will enter the bottom mold 21 under the guidance of the guide pipe 110, flow back to the water tank 11 after circling the mold cavity. The heat absorbed by the cooling water will be transferred to the heat pipe 12 installed at the rear end of the water tank 11. When one end of the heat pipe 12 is heated, the cooling medium in the capillary tube evaporates rapidly. The vapor flows to the other end of the heat pipe 12 under a small pressure difference and releases heat. The motor 17 drives the fan blades 18 to rotate, so that the fan blades 18 generate airflow blowing towards the heat dissipation fins 13, thereby recondensing the cooling medium in the heat pipe 12 into liquid. The liquid then flows back to the evaporation section along the porous material by capillary force. This cycle continues to cool the cooling water, and the cooling water will re-enter the guide pipe 110 under the action of the liquid pump 19. The movable cover 22 is connected to the sealing cover 23 by bolts and nuts, and the contact surface between the movable cover 22 and the sealing cover 23 is provided with a half-cylindrical opening structure, and the center of the opening structure of the movable cover 22 and the sealing cover 23 is provided with an annular protrusion. When pouring, the molten iron is injected into the mold cavity of the bottom mold 21 through the opening structure of the movable cover 22 and the sealing cover 23, and the molten iron liquid level is higher than the center of the opening structure of the movable cover 22 and the sealing cover 23 when the pouring is completed. The annular protrusion is set so that an annular protrusion structure appears on the upper end of the casting nozzle after solidification. After the molten iron solidifies, the hydraulic piston 25 lifts the cover 23 and the movable cover 22. The casting will remain in an interlocking state with the cover 23 and the movable cover 22 under the influence of the nozzle protrusion structure, thereby facilitating the removal of the casting from the mold cavity. The bolts and nuts that keep the cover 23 and the movable cover 22 connected can be unscrewed to remove the casting from the back side of the cover 23. This method can prevent the casting from being stuck inside the mold cavity and affecting the demoulding operation.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special-shaped cast steel mold for subway bogie processing, characterized in that: include: A bottom plate (1), a water tank (11) is fixedly installed above the bottom plate (1), a heat pipe (12) is inserted and installed at the rear end of the water tank (11), a heat dissipation fin (13) is inserted and installed at the rear end of the heat pipe (12), a limit frame (14) is fixedly installed on the rear side of the water tank (11), a fixed frame (15) is fixedly installed on the left side of the limit frame (14), a fixed frame (16) is fixedly installed inside the fixed frame (15), a motor (17) is inserted and installed at the center of the fixed frame (16), and a fan blade is inserted and installed on the outer side of the rotating shaft of the motor (17) (18), a liquid pump (19) is fixedly installed on the front side of the water tank (11), a guide tube (110) is fixedly installed on the front side of the liquid pump (19), a support frame (2) is fixedly installed above the bottom plate (1), a bottom mold (21) is fixedly installed above the support frame (2), a movable cover (22) is movably installed above the bottom mold (21), a sealing cover (23) is movably installed on the front side of the movable cover (22), a limiting frame (24) is fixedly installed above the bottom plate (1), and a hydraulic piston (25) is fixedly installed on the upper end of the limiting frame (24).

2. The special-shaped steel casting mold for machining a subway bogie according to claim 1, characterized in that: The rear end of the heat pipe (12) passes through the rear end elevation of the water tank (11) and is located at the rear side of the water tank (11); the heat dissipation fins (13) are equidistantly installed at the portion of the heat pipe (12) located outside the water tank (11); and the upper and lower ends of the heat dissipation fins (13) are fixedly connected to the limit frame (14).

3. The special-shaped steel casting mold for machining a subway bogie according to claim 1, characterized in that: The bottom surface of the fixed frame (15) is fixedly connected to the bottom plate (1), the motor (17) is fixedly connected to the fixed frame (15) via the fixing frame (16), and the air outlet of the fan blade (18) is directed toward the heat dissipation fins (13).

4. The special-shaped steel casting mold for machining a subway bogie according to claim 1, characterized in that: One end of the guide tube (110) is connected to the liquid pump (19), and the other end is connected to the water tank (11). The upper part of the guide tube (110) is located inside the bottom mold (21), and the upper part of the guide tube (110) matches the shape of the mold cavity.

5. The special-shaped steel casting mold for machining a subway bogie according to claim 1, characterized in that: The support frame (2) is installed above the base plate (1) at equal distances from front to back, and the bottom mold (21) is fixedly connected to the base plate (1) through the support frame (2).

6. The special-shaped steel casting mold for machining a subway bogie according to claim 1, characterized in that: The movable cover (22) is movably connected to the sealing cover (23) through bolts and nuts, and a half-cylindrical opening structure is provided on the contact surface between the movable cover (22) and the sealing cover (23), and an annular protrusion is provided at the center of the opening structure of the movable cover (22) and the sealing cover (23).

7. The special-shaped steel casting mold for machining a subway bogie according to claim 2, characterized in that: The hydraulic piston (25) is symmetrically mounted on the top of the limiting frame (24) in front and back directions, and the bottom end of the hydraulic piston (25) is fixedly connected to the top surface of the sealing cover (23).

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