Casting mold, method for bogie side frame of axle-end generator bogie, and bogie

Abstract

The application discloses a casting mold, a method and a bogie for a bogie side frame of a shaft-end power generation device, and the casting mold comprises a side frame body mold, a first end mold, a second end mold and a mounting seat mold which are independent of each other; the side frame body mold, the first end mold, the second end mold and the mounting seat mold are arranged to be capable of being shaped to form an integrated structure and to form the bogie side frame of the shaft-end power generation device through casting; the side frame body mold is used for forming a side frame body; the first end mold and the second end mold are respectively used for forming a first end and a second end; and the mounting seat mold is used for forming a mounting seat. The application can improve the universality of casting the bogie side frame of the shaft-end power generation device.

Description

Technical Field

[0001] This invention relates to a bogie side frame and a bogie, specifically to a casting mold, method, and bogie for a bogie side frame with an axle-end power generation device. Background Technology

[0002] The side frame is a key component of the three-piece cast steel bogie for railway freight cars. It forms the foundation of the bogie, integrating all its parts into a unified whole. The side frame not only bears and transmits various forces and loads, but its structure and dimensions must also meet the structural, shape, and assembly requirements of other bogie components, such as the structural and positional requirements of the basic braking device, secondary spring assembly, and axle box positioning device.

[0003] Currently, most bogies with axle-end power generation devices are welded frame bogies, which have a relatively complex structure. Existing cast steel three-piece bogies with axle-end power generation devices have the axle-end power generation device connecting / mounting seat welded to the end of the side frame, with the motor suspended by a cantilever beam to achieve self-generating power at the axle end. However, in operation, vehicles using this method are subjected to continuous impact from alternating loads and the action of the cantilever beam, posing safety hazards at the welded joints. Furthermore, the axle-end power generation device is only located at one end of a bogie, while a vehicle requires two bogies and four side frames, resulting in inconsistencies between the side frame end and the other three. This necessitates the creation of new molds for the side frame. A set of molds costs approximately 300,000 to 400,000 yuan and takes more than 20 days, increasing the manufacturing cost and time of the side frame. Another method is integral casting of the side frame end, which also suffers from mold costs and time constraints. Additionally, the integral end mold relies on pins for fastening; changing the end mold leads to problems such as pin wear from repeated insertion and removal, causing the side frame end to wobble, misalignment, and difficulty in guaranteeing quality after casting. Summary of the Invention

[0004] In view of this, one object of the present invention is to provide a casting mold for a bogie side frame with an axle-end power generation device, which can improve the versatility of casting side frames, reduce casting costs, and shorten the casting cycle. Another object of the present invention is to provide a method for casting a bogie side frame with an axle-end power generation device using the aforementioned casting mold. A further object of the present invention is to provide a bogie side frame with an axle-end power generation device cast using the above-described method. Yet another object of the present invention is to provide a bogie comprising the bogie side frame with an axle-end power generation device as described above. A further object of the present invention is to provide a railway freight car comprising the bogie as described above.

[0005] The present invention achieves the above objectives using the following technical solutions.

[0006] On one hand, the present invention provides a casting mold for a bogie side frame with axle-end power generation device, the bogie side frame with axle-end power generation device includes a side frame body, a first end, a second end, and a mounting base; the first end and the second end are respectively connected to both ends of the side frame body, and the first end and the second end are symmetrically arranged; the mounting base is connected to the second end; the casting mold includes a side frame body mold, a first end mold, a second end mold, and a mounting base mold that are independent of each other;

[0007] The side frame body mold, the first end mold, the second end mold, and the mounting base mold are configured to be shaped into an integral structure and formed by casting to create the side frame of the bogie with the shaft end power generation device.

[0008] The side frame body mold is used to form the side frame body;

[0009] The first end mold and the second end mold are used to form the first end and the second end, respectively;

[0010] The mounting base mold is used to form the mounting base;

[0011] The side frame body mold includes a matching side frame body outer cavity mold and a side frame body inner cavity mold;

[0012] The first end mold includes a matching first outer cavity mold and a first inner cavity mold; the second end mold includes a matching second outer cavity mold and a second inner cavity mold.

[0013] The mounting base mold includes a matching third outer cavity mold and a third inner cavity mold;

[0014] The third outer cavity mold is configured to be able to insert into the second outer cavity mold; the third inner cavity mold is configured to be able to insert into the second inner cavity mold.

[0015] This enhances the casting versatility of the side frame, reduces manufacturing costs, and shortens the manufacturing cycle. In this invention, the first end mold, the second end mold, and the mounting base mold are all independent, detachable structures. The first end mold, the second end mold, and the mounting base mold are "live" insert casting structures. This improves versatility, facilitates molding, and makes it easier to control the precision of connections between components.

[0016] In this invention, the side frame body has the same structure as the existing freight car bogie side frame, and will not be described in detail here.

[0017] According to the casting mold of the present invention, preferably, the second end includes an end wall, a first side wall, and a second side wall; the first side wall and the second side wall are respectively located on both sides of the end wall. In the present invention, the first side wall and the second side wall are arranged in parallel.

[0018] According to the casting mold of the present invention, preferably, a strip-shaped hole is provided on the second end; the end wall is a side wall forming the strip-shaped hole. Such a side frame structure is beneficial for installing other components or for convenient use.

[0019] According to the casting mold of the present invention, preferably, the mounting base includes a mounting plate, a first upright plate, a second upright plate, a first connecting plate, a second connecting plate, and a third connecting plate;

[0020] The mounting plate has an elliptical hole in the middle.

[0021] The first upright plate and the second upright plate are symmetrically arranged on both sides of the elliptical hole and are perpendicular to the mounting plate;

[0022] The first connecting plate consists of two symmetrically arranged pieces; the second connecting plate consists of two symmetrically arranged pieces; the third connecting plate consists of two symmetrically arranged pieces; the first, second, and third connecting plates are arranged in parallel; the first, second, and third connecting plates of one piece are all connected to the first upright plate and the mounting plate; the first, second, and third connecting plates of the other piece are all connected to the second upright plate and the mounting plate. This type of mounting base has a more stable structure and a longer service life.

[0023] In this invention, the first connecting plate, the second connecting plate, and the third connecting plate are laterally connected to the first upright plate and the second upright plate, respectively. The two connecting plates are symmetrically arranged and located on the side of the first upright plate and the second upright plate away from the elliptical hole, respectively.

[0024] According to the casting mold of the present invention, preferably, the first upright plate, the second upright plate, and the end wall form a cast-in-place structure; one of the first connecting plates, the second connecting plate, and the third connecting plate forms a cast-in-place structure with the first side wall; and the other of the first connecting plates, the second connecting plate, and the third connecting plate forms a cast-in-place structure with the second side wall. This results in a more stable side frame structure.

[0025] According to the casting mold of the present invention, preferably, the third inner cavity mold has a first protrusion matching the elliptical hole on the side away from the second inner cavity mold; the top of the second inner cavity mold has a second protrusion and a cylindrical protrusion; the second protrusion is similar to an ellipse; the second protrusion and the cylindrical protrusion match the strip hole; the third outer cavity mold has a first rib, a second rib, and a third rib matching the first connecting plate, the second connecting plate, and the third connecting plate. The first end mold, the second end mold, and the mounting base mold with this structure can form a "living" insertion casting structure, thereby accurately obtaining the desired side frame of the bogie with the axle-end generator.

[0026] In this invention, the height of the cylindrical protrusion is higher than the height of the second protrusion. The cylindrical protrusion is located close to the third inner cavity mold.

[0027] On the other hand, the present invention also provides a method for casting a bogie side frame with axle-end power generation device using a casting mold as described above, comprising the following steps:

[0028] 1) Prepare the corresponding casting molds, including: prepare the side frame body mold, the first end mold, the second end mold and the mounting base mold;

[0029] 2) Insert the two ends of the outer cavity mold of the side frame body into the first outer cavity mold and the second outer cavity mold respectively, and insert the third outer cavity mold into the second outer cavity mold to form the outer cavity mold;

[0030] The two ends of the inner cavity mold of the side frame body are respectively inserted into the first inner cavity mold and the second inner cavity mold, and the third inner cavity mold is inserted into the second inner cavity mold to form the inner cavity mold; the positions of the third outer cavity mold and the third inner cavity mold are corresponding;

[0031] 3) Design;

[0032] 4) After the molding is completed, the boxes are assembled to form an integral structure, and then casting is carried out to obtain the bogie side frame with the axle end generator.

[0033] In step 2) of the present invention, the third outer cavity mold is inserted into the second outer cavity mold, and the third inner cavity mold is inserted into the second inner cavity mold. Such a "living" insertion mold can help achieve casting reliability and safety in use.

[0034] In step 3), the outer cavity mold is usually divided into two box types, upper and lower. The lower box type can contain the entire inner cavity mold, and the inner shape of the upper box type is the same as the outer contour shape of the side frame. The lower box type of the outer cavity mold is placed flat, and after the inner cavity mold is placed into the lower box type of the outer cavity mold, a core box with the same shape as the gap is placed in the gap between the inner and outer cavity molds. Then the inner cavity mold is taken out and shaped according to the shape of the inner cavity mold.

[0035] In step 3) of this invention, molding sand is used for molding. During the molding process, molding insertion technology is used to connect the parts forming the first upright plate, the second upright plate, and the end wall using molding sand; and to connect the parts forming the first connecting plate, the second connecting plate, the third connecting plate, the first side wall, and the second side wall using molding sand, molding them into an integral structure before casting. This allows for more precise control over the size and shape of the connection between the second end of the side frame and the mounting base.

[0036] In step 4), after the molding is completed, the lower box shape and the upper box shape of the outer cavity mold are joined together to form an integrated structure, and then casting is carried out. After casting, the molding sand used for molding is removed to obtain the side frame of the bogie with the shaft end generator.

[0037] In this invention, the specific shaping, box assembly, and casting operations can be those known in the art, and will not be elaborated here.

[0038] According to the method of the present invention, preferably, in step 3), molding sand is used for molding; in step 4), the molding sand is removed after casting.

[0039] In another aspect, the present invention provides a bogie side frame with axle-end power generation device, which is cast using the method described above.

[0040] In another aspect, the present invention also provides a bogie that includes the bogie side frame with axle-end power generation device as described above.

[0041] In another aspect, the present invention also provides a railway freight car comprising the bogie described above.

[0042] The casting mold and method of the present invention can improve the versatility of casting the side frame of the bogie with axle-end power generation device, reduce casting costs, and shorten the casting cycle. Furthermore, the casting method of the present invention has high reliability and safety, and the casting mold is convenient to maintain and repair. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of a bogie side frame with a shaft-end power generation device according to the present invention.

[0044] Figure 2 This is a partial perspective view of the side frame of the bogie with the axle-end power generation device of the present invention.

[0045] Figure 3 This is a front view schematic diagram of a mounting base according to the present invention.

[0046] Figure 4 This is a side view of a mounting base according to the present invention.

[0047] Figure 5 This is a top view of the second end of the bogie side frame of the present invention, which is a shaft-end power generation device.

[0048] Figure 6 This is a schematic diagram of the third outer cavity mold and the second outer cavity mold of the mounting base mold of the present invention.

[0049] Figure 7 This is a schematic diagram showing the connection between the third inner cavity mold of the mounting base mold of the present invention and the second inner cavity mold of the second end mold.

[0050] The annotations in the attached figures are explained as follows:

[0051] 100 - Side frame of bogie with axle-end generator; 110 - First end; 121 - End wall; 122 - First side wall; 123 - Second side wall; 124 - Strip hole; 120 - Second end; 130 - Mounting seat; 131 - Mounting plate; 132 - First upright plate; 133 - Second upright plate; 134 - First connecting plate; 135 - Second connecting plate; 136 - Third connecting plate; 137 - Elliptical hole; 140 - Side frame body;

[0052] 200 - Casting mold for the side frame of the bogie with axle-end generator; 221 - Second outer cavity mold; 222 - Second inner cavity mold; 2221 - Second protrusion; 2222 - Cylindrical protrusion; 231 - Third outer cavity mold; 2311 - First stiffener; 2312 - Second stiffener; 2313 - Third stiffener; 232 - Third inner cavity mold; 2321 - First protrusion. Detailed Implementation

[0053] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0054] Example 1

[0055] Figure 1 This is a schematic diagram of the structure of a bogie side frame with a shaft-end power generation device according to the present invention. Figure 2 This is a partial perspective view of the side frame of the bogie with the axle-end power generation device of the present invention. Figure 3 This is a front view schematic diagram of a mounting base according to the present invention. Figure 4 This is a side view of a mounting base according to the present invention. Figure 5 This is a top view of the second end of the bogie side frame of the present invention, which is a shaft-end power generation device. Figure 6 This is a schematic diagram showing the connection between the third outer cavity mold of the mounting base mold of the present invention and the second outer cavity mold of the second end mold. Figure 7 This is a schematic diagram showing the connection between the third inner cavity mold of the mounting base mold of the present invention and the second inner cavity mold of the second end mold.

[0056] The casting mold 200 for the bogie side frame with axle-end power generation device in this embodiment can be used to cast the bogie side frame 100 with axle-end power generation device.

[0057] like Figure 1 and Figure 2 As shown, the side frame 100 of the bogie with axle end generator in this embodiment includes a side frame body 140, a first end 110, a second end 120 and a mounting base 130.

[0058] The first end 110 and the second end 120 are respectively connected to both ends of the side frame body 140, and the first end 110 and the second end 120 are symmetrically arranged. The mounting base 130 is connected to the second end 120.

[0059] like Figure 5 As shown, the second end portion 120 includes an end wall 121, a first side wall 122, and a second side wall 123. The first side wall 122 and the second side wall 123 are located on both sides of the end wall 121, respectively. A strip-shaped hole 124 is provided on the second end portion 120. The end wall 121 is one side wall forming the strip-shaped hole 124.

[0060] like Figure 3 and Figure 4 As shown, the mounting base 130 includes a mounting plate 131, a first upright plate 132, a second upright plate 133, a first connecting plate 134, a second connecting plate 135, and a third connecting plate 136. An elliptical hole 137 is provided in the center of the mounting plate 131. The first upright plate 132 and the second upright plate 133 are symmetrically arranged on both sides of the elliptical hole 137 and are perpendicular to the mounting plate 131. There are two first connecting plates 134, two second connecting plates 135, and two third connecting plates 136. The first connecting plates 134, 135, and 136 are arranged in parallel. One set of the first connecting plates 134, 135, and 136 is connected to both the first upright plate 132 and the mounting plate 131. The other set of the first connecting plates 134, 135, and 136 is connected to both the second upright plate 133 and the mounting plate 131.

[0061] The first upright plate 132 and the second upright plate 133 form a cast-in-place structure with the end wall 121. The first connecting plate 134, the second connecting plate 135 and the third connecting plate 136 of one piece form a cast-in-place structure with the first side wall 122. The first connecting plate 134, the second connecting plate 135 and the third connecting plate 136 of the other piece form a cast-in-place structure with the second side wall 123.

[0062] like Figure 6 and Figure 7 As shown, the casting mold 200 for the bogie side frame with axle end generator in this embodiment includes a side frame body mold (not shown), a first end mold (not shown), a second end mold, and a mounting base mold that are independent of each other.

[0063] The side frame body mold, the first end mold, the second end mold, and the mounting base mold are configured to form an integral structure and, through casting, form the bogie side frame 100 with the axle-end power generation device. The side frame body mold forms the side frame body. The first end mold and the second end mold form the first end 110 and the second end 120, respectively. The first end mold and the second end mold have the same structure. The mounting base mold is used to form the mounting base 130.

[0064] The side frame body mold includes a matching outer cavity mold and an inner cavity mold. The first end mold includes a matching first outer cavity mold and a first inner cavity mold. The second end mold includes a matching second outer cavity mold 221 and a matching second inner cavity mold 222. The mounting base mold includes a matching third outer cavity mold 231 and a third inner cavity mold 232.

[0065] The third outer cavity mold 231 can be inserted into the second outer cavity mold 221. The third inner cavity mold 232 can be inserted into the second inner cavity mold 222. This allows for connection via molding sand using molding insertion technology during the molding process. The "living" insertion mold ensures the reliability and safety of side frame casting.

[0066] The third inner cavity mold 232 has a first protrusion 2321 matching the elliptical hole 137 on the side away from the second inner cavity mold 222. The top of the second inner cavity mold 222 has an elliptical second protrusion 2221 and a cylindrical protrusion 2222 matching the strip hole 124. The height of the cylindrical protrusion 2222 is greater than the height of the second protrusion 2221. The third outer cavity mold 231 has a first rib 2311, a second rib 2312, and a third rib 2313 respectively for forming the first connecting plate 134, the second connecting plate 135, and the third connecting plate 136.

[0067] The method for casting the bogie side frame 100 with axle-end power generation device using the casting mold 200 of the bogie side frame with axle-end power generation device described in this embodiment includes the following steps:

[0068] 1) Prepare the corresponding casting molds, including: prepare the side frame body mold, the first end mold, the second end mold and the mounting base mold.

[0069] 2) Insert both ends of the side frame body outer cavity mold into the first outer cavity mold and the second outer cavity mold 221 respectively, and insert the third outer cavity mold 231 into the end of the second outer cavity mold 221 away from the side frame body outer cavity mold, thereby forming the outer cavity mold;

[0070] The two ends of the inner cavity mold of the side frame body are respectively inserted into the first inner cavity mold and the second inner cavity mold 222, and the third inner cavity mold 232 is inserted into the end of the second inner cavity mold 222 away from the inner cavity mold of the side frame body, thereby forming an inner cavity mold; the positions of the third outer cavity mold 231 and the third inner cavity mold 232 are corresponding.

[0071] 3) Shaping. Typically, the outer cavity mold consists of two box-shaped sections, upper and lower. The lower box-shaped section encompasses the entire inner cavity mold, while the interior of the upper box-shaped section has the same external contour as the side frame. The lower box-shaped section of the outer cavity mold is placed flat. After the inner cavity mold is placed inside the lower box-shaped section of the outer cavity mold, a core box with the same shape as the gap between the inner and outer cavity molds is placed. Then, the inner cavity mold is removed, and the shape is shaped according to the inner cavity mold. Shaping can be done using molding sand. This allows the first upright plate 132, the second upright plate 133, and the end wall 121 to form a cast-integrated structure. The first connecting plate 134, the second connecting plate 135, and the third connecting plate 136 of one piece form a cast-integrated structure with the first side wall 122. The first connecting plate 134, the second connecting plate 135, and the third connecting plate 136 of another piece form a cast-integrated structure with the second side wall 123.

[0072] 4) After the molding is completed, the lower box shape and the upper box shape of the outer cavity mold are joined together to form an integrated structure, and then casting is carried out. After casting, the molding sand is removed to obtain the side frame 100 of the bogie with the shaft end generator.

[0073] Example 2

[0074] This embodiment provides a bogie, which includes the bogie side frame 100 with axle end power generation device as described in Embodiment 1.

[0075]

[0076] This embodiment provides a railway freight car, which includes the bogie of Embodiment 2.

[0077] This invention is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this invention fall within the scope of this invention.

Claims

1. A casting mold for a bogie side frame with an axle-end generator, the bogie side frame comprising a side frame body, a first end, a second end, and a mounting base; the first end and the second end are respectively connected to both ends of the side frame body, and the first end and the second end are symmetrically arranged; the mounting base is connected to the second end; characterized in that, The casting mold includes an independent side frame body mold, a first end mold, a second end mold, and a mounting base mold; The side frame body mold, the first end mold, the second end mold, and the mounting base mold are configured to be shaped into an integral structure and formed by casting to create the side frame of the bogie with the shaft end power generation device. The side frame body mold is used to form the side frame body; The first end mold and the second end mold are used to form the first end and the second end, respectively; The mounting base mold is used to form the mounting base; The side frame body mold includes a matching side frame body outer cavity mold and a side frame body inner cavity mold; The first end mold includes a matching first outer cavity mold and a first inner cavity mold; the second end mold includes a matching second outer cavity mold and a second inner cavity mold. The mounting base mold includes a matching third outer cavity mold and a third inner cavity mold; The third outer cavity mold is configured to be able to insert into the second outer cavity mold; the third inner cavity mold is configured to be able to insert into the second inner cavity mold.

2. The casting mold according to claim 1, characterized in that, The second end portion includes an end wall, a first side wall, and a second side wall; the first side wall and the second side wall are located on both sides of the end wall, respectively.

3. The casting mold according to claim 2, characterized in that, A strip-shaped hole is provided on the second end; the end wall is a side wall that forms the strip-shaped hole.

4. The casting mold according to claim 3, characterized in that, The mounting base includes a mounting plate, a first upright plate, a second upright plate, a first connecting plate, a second connecting plate, and a third connecting plate; The mounting plate has an elliptical hole in the middle. The first upright plate and the second upright plate are symmetrically arranged on both sides of the elliptical hole and are perpendicular to the mounting plate; There are two first connecting plates, which are symmetrically arranged; there are two second connecting plates, which are symmetrically arranged; there are two third connecting plates, which are symmetrically arranged; the first, second, and third connecting plates are arranged in parallel; the first, second, and third connecting plates of one plate are all connected to the first upright plate and the mounting plate; the first, second, and third connecting plates of the other plate are all connected to the second upright plate and the mounting plate.

5. The casting mold according to claim 4, characterized in that, The first upright plate, the second upright plate and the end wall form a cast integral structure; the first connecting plate, the second connecting plate and the third connecting plate of one piece form a cast integral structure with the first side wall; the first connecting plate, the second connecting plate and the third connecting plate of the other piece form a cast integral structure with the second side wall.

6. The casting mold according to claim 5, characterized in that, The third inner cavity mold has a first protrusion that matches the elliptical hole on the side away from the second inner cavity mold; the top of the second inner cavity mold has a second protrusion and a cylindrical protrusion; the second protrusion is elliptical; the second protrusion and the cylindrical protrusion match the strip hole; the third outer cavity mold has a first rib, a second rib, and a third rib that match the first connecting plate, the second connecting plate, and the third connecting plate, respectively.

7. A method for casting a bogie side frame with axle-end power generation device using the casting mold of the bogie side frame with axle-end power generation device as described in claim 6, characterized in that, Includes the following steps: 1) Prepare the corresponding casting molds, including: prepare the side frame body mold, the first end mold, the second end mold and the mounting base mold; 2) Insert the two ends of the outer cavity mold of the side frame body into the first outer cavity mold and the second outer cavity mold respectively, and insert the third outer cavity mold into the second outer cavity mold to form the outer cavity mold; The two ends of the inner cavity mold of the side frame body are respectively inserted into the first inner cavity mold and the second inner cavity mold, and the third inner cavity mold is inserted into the second inner cavity mold to form the inner cavity mold; the positions of the third outer cavity mold and the third inner cavity mold are corresponding; 3) Design; 4) After the molding is completed, the boxes are assembled to form an integral structure, and then casting is performed to obtain the bogie side frame with the axle end generator.

8. The method according to claim 7, characterized in that, In step 3), molding sand is used for shaping; in step 4), the molding sand is removed after casting.

9. A bogie side frame with axle-end power generation device, characterized in that, It is cast using the method described in claim 7 or 8.

10. A bogie, characterized in that, It includes the bogie side frame with axle-end power generation device as described in claim 9.

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