A forming device for engineering vehicle wheel hub steel rim

Abstract

The present invention relates to the technical field of casting molding equipment, and more specifically, to a molding device for engineering vehicle wheel hub steel rims. The molding device comprises a basic molding mechanism, which comprises a base, a lower mold plate, and an upper mold lifting assembly. The present invention simultaneously pours molten metal at multiple points near the inner bottom wall of a molding cavity through multiple pouring bottom pipes below a collection tank to prevent splashing. At the same time, a driving assembly is used to drive a lifting ring to rise. Under the action of a linkage rotating member and a guide screw, the turntable portion of the lifting ring and the collection tank on the turntable rotate synchronously, thereby allowing the collection tank and the multiple pouring bottom pipes to maintain a rotating state during the ascending process. When pouring molten metal, the pouring bottom pipes always maintain a certain distance from the molten metal layer inside the molding cavity. At the same time, the molten metal falling from multiple points is in a state of circular rotation and falling, preventing the molten metal from accumulating at the landing point and quickly and evenly covering the molding cavity.

Description

Technical Field

[0001] The invention relates to the technical field of casting molding equipment, in particular to a molding device for an engineering vehicle wheel hub steel rim. Background Art

[0002] The wheel hub is a structural component that supports the inner profile of the tire. It is cylindrical and fits over the tire, and its center is connected to the vehicle's axle. It is also called a rim, steel wheel, wheel, or tire bell.

[0003] Currently, the process involves melting the metal at high temperatures until it becomes liquid, pouring it into a wheel hub mold, and then disassembling the mold to obtain the product blank. This blank then undergoes multiple processes, including grinding, polishing, and painting, to create the complete product.

[0004] Mold casting is the most common wheel manufacturing process. Its characteristic is that the mold can be reused, so the production cost is low and the production cycle is fast. Complex and diverse rim shapes can be obtained by simply replacing the mold.

[0005] This mold casting method requires the metal to be melted before being introduced into the mold. There is a time difference in the process of the molten metal entering the mold and filling the molding cavity, which causes the molten metal to have a large density difference during the flow and cooling process, resulting in varying degrees of quality risks in the final molded product. For some large-sized wheels, this quality risk is more prominent because the mold molding cavity is larger, the time it takes to pour the molten metal is longer, and the molten metal flow time is also longer. In this case, most people use the method of injecting the molten metal at multiple points simultaneously to reduce the pouring time, but there are still certain limitations: when pouring, most people choose to pour into the molding cavity from top to bottom, and the molding cavity of large-sized wheels is affected by the height. The distance between the falling molten metal and the bottom wall of the molding cavity is too long, and the molten metal is prone to splashing when falling into the molding cavity. Some of the splashed molten metal will be contaminated by the inner wall of the molding cavity and cooled to form metal spots. When the subsequent molten metal fills the molding cavity, there will be obvious quality differences between the metal spots formed by the splashing and the subsequently cooled metal parts, which become irregular points on the surface of the wheel. Summary of the Invention

[0006] The purpose of the present invention is to provide a forming device for engineering vehicle wheel hub steel rims to solve the problem that there is a significant quality difference between the metal points formed by splashing and the subsequently cooled metal parts, which become irregular points on the hub surface.

[0007] To achieve the above-mentioned object, the present invention provides a forming device for an engineering vehicle wheel hub steel rim, comprising a basic forming mechanism, the basic forming mechanism comprising a base, a lower template, and an upper template lifting assembly, the top wall of the lower template defining a forming cavity, the upper template lifting assembly comprising an upper template, the upper template being in contact with the top wall of the lower template, and the upper template defining a pouring groove facing the forming cavity, the base being disposed below the lower template;

[0008] A lifting mechanism is provided on the inner side of the base, and the lifting end of the lifting mechanism passes through the bottom wall of the lower template and acts on the inside of the molding cavity from bottom to top;

[0009] The lifting and pouring mechanism includes a pouring assembly, a lifting and rotating assembly and a driving assembly; the lifting and rotating assembly includes a lifting ring platform, a guide screw and a linkage rotating part. The lifting ring platform is arranged above the upper template. The driving assembly acts on the lifting ring platform. The pouring assembly is arranged on the lifting ring platform, and the pouring end of the pouring assembly passes through the lifting ring platform and the pouring groove and is inserted into the molding cavity of the lower template. The guide screw is vertically arranged on the top wall of the lower template and passes through the upper template. The linkage rotating part is arranged between the lifting ring platform and the guide screw. The driving assembly drives the lifting ring platform and the pouring assembly to move upward, and the guide screw acts on the linkage rotating part and drives the lifting ring platform and the pouring assembly to rotate.

[0010] As a further improvement of the present technical solution, the pouring assembly includes an aggregate tank and a pouring bottom pipe, the aggregate tank is arranged on the lifting and rotating assembly, the pouring bottom pipe is arranged vertically at the bottom end of the aggregate tank, and the pouring bottom pipe passes through the lifting and rotating assembly and the upper template and is inserted into the forming cavity of the lower template;

[0011] Wherein, the bottom end of the pouring bottom pipe is close to the bottom wall of the forming cavity.

[0012] As a further improvement of the present technical solution, the lifting ring platform includes a fixed platform and a turntable. The fixed platform is a circular ring platform and is arranged on the vertical driving end of the driving assembly. The turntable is rotatably installed on the inner side of the fixed platform. The aggregate tank is arranged at the end of the turntable, and the pouring bottom pipe passes through the turntable.

[0013] As a further improvement of this technical solution, the driving assembly includes a lifting member and a connecting ring frame. The lifting member is vertically arranged on one side of the basic forming mechanism. One end of the connecting ring frame is connected to the lifting end of the lifting member, and the other end is connected to the fixed platform.

[0014] As a further improvement of the present technical solution, the linkage rotating part includes an internally threaded toothed disc and a linkage toothed disc. A receiving disc is provided on one side of the fixed table. The internally threaded toothed disc is rotatably mounted on the receiving disc. The linkage toothed disc is sleeved on the outside of the turntable, and the internally threaded toothed disc is meshed with the linkage toothed disc. An internally threaded hole is provided in the center of the internally threaded toothed disc, and the guide screw vertically penetrates the receiving disc and threads through the internally threaded hole of the internally threaded toothed disc.

[0015] As a further improvement of the present technical solution, the diameter of the internally threaded toothed disc is smaller than the diameter of the linkage toothed disc.

[0016] As a further improvement of the technical solution, a gate turntable is rotatably installed at the center of the upper template, the pouring groove is opened on the gate turntable, and the pouring bottom pipe vertically passes through the pouring groove and is inserted into the molding cavity of the top wall of the lower template;

[0017] There are multiple pouring grooves on the gate turntable, and they are distributed in a circular shape at the edge of the gate turntable. There are multiple pouring bottom pipes at the bottom of the aggregate tank, and the pouring bottom pipes correspond to the positions of the pouring grooves on the gate turntable.

[0018] As a further improvement of the present technical solution, the upper mold lifting assembly also includes guide side columns and a lifting cylinder. The guide side columns are arranged in a group of four vertically at the four corners of the top surface of the lower mold. The four corners of the upper mold are respectively slidably installed on the four guide side columns. The lifting cylinder is arranged on one side of the base, and the output end of the lifting cylinder acts on the plate body of the upper mold.

[0019] As a further improvement of the present technical solution, the lifting mechanism includes a guide column and a lifting push rod, the guide column is vertically arranged between the base and the lower template, the lifting push rod is arranged on the guide column, and the lifting end of the lifting push rod passes through the lower template and is inserted into the molding cavity;

[0020] Wherein, the lifting end of the lifting push rod is in contact with the bottom wall of the forming cavity.

[0021] Compared with the prior art, the present invention provides a forming device for an engineering vehicle wheel hub steel rim, which has the following beneficial effects:

[0022] The present invention uses multiple pouring bottom pipes below the aggregate tank to simultaneously pour molten metal at multiple points close to the bottom wall inside the forming cavity to prevent splashing. At the same time, the driving component is used to drive the lifting ring platform to rise. Under the action of the linkage rotating part and the guide screw, the turntable part of the lifting ring platform and the aggregate tank on the turntable rotate synchronously, so that the aggregate tank and the multiple pouring bottom pipes can keep rotating during the rising process, so that the pouring bottom pipes always maintain a certain distance from the molten metal layer inside the forming cavity when pouring molten metal, and at the same time, the molten metal falling from multiple points is in a circular rotating and falling state, preventing the molten metal from accumulating at the landing point and quickly and evenly covering the forming cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the lifting ring platform after it is raised in the present invention;

[0025] Figure 3 This is a schematic diagram of the overall structure of the lifting ring platform and the upper template after they are raised in the present invention;

[0026] Figure 4 This is a schematic diagram of the structural breakdown of the basic forming mechanism, pouring assembly, and lifting and rotating assembly in the present invention;

[0027] Figure 5 This is a structural breakdown diagram of the linked rotating member and the lifting ring platform in the present invention;

[0028] Figure 6 It is a cross-sectional view of the overall structure of the present invention;

[0029] Figure 7 Schematic diagram of the structural distribution of the upper template and the lower template in the present invention;

[0030] Figure 8 It is a structural schematic diagram of the lower template in the present invention.

[0031] In the figure: 1. Base; 11. Lifting mechanism; 111. Guide column; 112. Lifting push rod; 2. Lower template; 21. Molding cavity; 3. Upper mold lifting assembly; 31. Upper template; 311. Casting groove; 312. Gate turntable; 32. Guide side column; 33. Lifting cylinder; 4. Lifting and rotating assembly; 41. Lifting ring platform; 411. Fixed platform; 412. Turntable; 42. Guide screw; 43. Linked rotating part; 431. Internal threaded gear disc; 432. Linked gear disc; 5. Aggregate tank; 6. Casting bottom pipe; 7. Lifting part; 8. Connecting ring frame. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1-8 A forming device for an engineering vehicle wheel hub rim is provided. In order to avoid splashing of molten metal when it is poured into a large forming space (i.e., the forming cavity 21 below), and to allow the molten metal to more evenly cover the forming space, a basic forming mechanism is provided. The basic forming mechanism includes a base 1, a lower template 2, and an upper template lifting assembly 3. The top wall of the lower template 2 is provided with a forming cavity 21. The upper template lifting assembly 3 includes an upper template 31. The upper template 31 is attached to the top wall of the lower template 2, and the upper template 31 is provided with a pouring groove 311 facing the forming cavity 21. The base 1 is provided below the lower template 2.

[0034] A lifting mechanism 11 is provided inside the base 1, and the lifting end of the lifting mechanism 11 passes through the bottom wall of the lower template 2 and acts on the inside of the molding cavity 21 from bottom to top;

[0035] The lifting and pouring mechanism includes a pouring assembly, a lifting and rotating assembly 4 and a driving assembly; the lifting and rotating assembly 4 includes a lifting ring platform 41, a guide screw 42 and a linkage rotating member 43. The lifting ring platform 41 is arranged above the upper template 31. The driving assembly acts on the lifting ring platform 41. The pouring assembly is arranged on the lifting ring platform 41, and the pouring end of the pouring assembly passes through the lifting ring platform 41 and the pouring groove 311 and is inserted into the molding cavity 21 of the lower template 2. The guide screw 42 is vertically arranged on the top wall of the lower template 2 and passes through the upper template 31. The linkage rotating member 43 is arranged between the lifting ring platform 41 and the guide screw 42. The driving assembly drives the lifting ring platform 41 and the pouring assembly to move upward, and The guide screw 42 acts on the linkage rotating part 43 and drives the lifting ring platform 41 and the pouring assembly to rotate, so that when pouring, the lifting ring platform 41 and the pouring assembly can be driven upward by the driving assembly, so that the pouring end of the pouring assembly is in a gradually rising state inside the molding cavity 21. At this time, the molten metal liquid will gradually fill the molding cavity 21, avoiding the molten metal liquid splashing when it falls due to the distance between the molten metal liquid and the bottom wall of the molding cavity 21 being too far during pouring. In addition, the pouring assembly also maintains a self-rotating state during the lifting process, which can drive the pouring bottom pipe 6 to rotate inside the molding cavity 21, so that the introduced molten metal liquid can be more evenly spread in the molding cavity 21.

[0036] The pouring assembly includes a collection tank 5 and a pouring bottom pipe 6. The collection tank 5 is arranged on the lifting and rotating assembly 4. The pouring bottom pipe 6 is vertically arranged at the bottom end of the collection tank 5. The pouring bottom pipe 6 passes through the lifting and rotating assembly 4 and the upper template 31 and is inserted into the forming cavity 21 of the lower template 2. The collection tank 5 is a tank device that can generate high pressure and can press the molten metal into the pouring bottom pipe 6 and flow out.

[0037] The bottom end of the pouring bottom pipe 6 is close to the bottom wall of the forming cavity 21 . When the pouring bottom pipe 6 is discharging the molten metal, no splashing will occur because the end is close to the bottom wall of the forming cavity 21 .

[0038] The lifting ring platform 41 includes a fixed platform 411 and a turntable 412. The fixed platform 411 is a circular ring platform and is set on the vertical driving end of the driving assembly. The turntable 412 is rotatably installed on the inner side of the fixed platform 411. The collecting tank 5 is set at the end of the turntable 412, and the pouring bottom pipe 6 passes through the turntable 412.

[0039] The driving assembly includes a lifting member 7 and a connecting ring frame 8. The lifting member 7 is vertically arranged on one side of the basic molding mechanism. The lifting member 7 is a working cylinder, and the lifting end of the lifting member 7 is vertically upward. One end of the connecting ring frame 8 is connected to the lifting end of the lifting member 7, and the other end is connected to the fixed platform 411. During pouring, the molten metal liquid inside the aggregate tank 5 is poured into the molding cavity 21 through the pouring bottom pipe 6. At this time, the connecting ring frame 8 and the fixed platform 411 are lifted by the lifting member 7, which can synchronously drive the turntable 412 and the aggregate tank 5 to rise, and at this time, the pouring bottom pipe 6 can be driven to rise in the molding cavity 21. When the molten metal liquid introduced by the pouring bottom pipe 6 is spread on the bottom layer of the molding cavity 21, the pouring bottom pipe 6 rises, which can allow the pouring bottom pipe 6 to always maintain a certain distance from the molten metal liquid inside the molding cavity 21, ensuring that the pouring bottom pipe 6 and the bottom wall of the molding cavity 21 will not block the pouring port due to being too close.

[0040] The linkage rotating part 43 includes an internally threaded toothed disc 431 and a linkage toothed disc 432. A receiving disc is provided on one side of the fixed platform 411. The internally threaded toothed disc 431 is rotatably mounted on the receiving disc. The linkage toothed disc 432 is sleeved on the outside of the turntable 412, and the internally threaded toothed disc 431 is engaged with the linkage toothed disc 432. An internally threaded hole is provided at the center of the internally threaded toothed disc 431. The guide screw 42 vertically penetrates the receiving disc and is threadedly penetrated through the internally threaded hole of the internally threaded toothed disc 431, so that when the internally threaded toothed disc 431 rises synchronously with the fixed platform 411, under the action of the thread of the guide screw 42, the internally threaded toothed disc 431 will rotate and drive the linkage toothed disc 432 and the turntable 412 to rotate synchronously.

[0041] A gate turntable 312 is rotatably mounted at the center of the upper template 31. A pouring slot 311 is provided on the gate turntable 312. The pouring bottom pipe 6 vertically passes through the pouring slot 311 and is inserted into the molding cavity 21 of the top wall of the lower template 2. The gate turntable 312 can rotate along with the circumference of the pouring bottom pipe 6 and rotate at the center of the upper template 31.

[0042] Among them, a plurality of pouring grooves 311 are opened on the gate turntable 312, and are distributed in a circular manner at the edge of the gate turntable 312. A plurality of pouring bottom pipes 6 are provided at the bottom end of the aggregate tank 5, and the pouring bottom pipes 6 correspond to the pouring grooves 311 on the gate turntable 312, so that the plurality of pouring bottom pipes 6 can pass through the plurality of pouring grooves 311 and enter the molding cavity 21. At this time, a plurality of pouring points are formed in the molding cavity 21, so that the molten metal liquid can be spread more evenly in the molding cavity 21. Figure 4 and Figure 8 As shown, since the wheel hub is a cylindrical structure, the molding cavity 21 is also a cylindrical cavity, and the edge of the molding cavity 21 is a circumferential space. At this time, when the pouring bottom pipe 6 rotates in a circle, it will rotate along the edge of the molding cavity 21, and the molten metal liquid can be introduced into the edge of the molding cavity 21 at multiple points at the same time for dispersion. At this time, along with the circumferential rotation of the pouring bottom pipe 6, the discharged molten metal liquid is in a state of rotating and falling, which can allow the molten metal liquid to be further quickly and evenly spread in the molding cavity 21, and at the same time prevent the accumulation of molten metal liquid caused by the fixed landing point of the molten metal liquid, resulting in the problem of untimely spreading.

[0043] like Figure 4 As shown, the diameter of the internally threaded toothed disc 431 is smaller than the diameter of the linked toothed disc 432. At the same time, since the internally threaded toothed disc 431 is guided by the thread to rotate when it moves on the guide screw 42, when the internally threaded toothed disc 431 rotates, the internally threaded toothed disc 431 rotates multiple times to drive the linked toothed disc 432 to rotate a smaller angle, so that the aggregate tank 5 and the pouring bottom pipe 6 are in a slowly rotating state, which is convenient for the slow pouring of molten metal liquid. In addition, since the multiple pouring bottom pipes 6 below the aggregate tank 5 are spaced at a certain angle, the internally threaded toothed disc 431 can be used to drive the linked toothed disc 432 to rotate a certain angle within the length of the guide screw 42, so as to fill the area between the multiple pouring bottom pipes 6 with water.

[0044] The upper mold lifting assembly 3 also includes a guide side column 32 and a lifting cylinder 33. The guide side columns 32 are arranged in a group of four vertically at the four corners of the top surface of the lower mold plate 2. The four corners of the upper mold plate 31 are slidably mounted on the four guide side columns 32. The lifting cylinder 33 is arranged on one side of the base 1, and the output end of the lifting cylinder 33 acts on the plate body of the upper mold plate 31. Figure 3 As shown, the upper template 31 can be raised by the lifting cylinder 33 to facilitate the removal of the wheel hub product formed in the molding cavity 21.

[0045] It should be clear that the positions of the lifting member 7 and the lifting cylinder 33 on the side of the basic molding mechanism are variable and can be changed as needed, so as not to affect the removal of the molded wheel hub product inside the molding cavity 21.

[0046] The lifting mechanism 11 includes a guide column 111 and a lifting push rod 112. The guide column 111 is vertically arranged between the base 1 and the lower template 2. The lifting push rod 112 is arranged on the guide column 111, and the lifting end of the lifting push rod 112 passes through the lower template 2 and is inserted into the molding cavity 21.

[0047] The lifting end of the lifting push rod 112 is in contact with the bottom wall of the molding cavity 21 , and the wheel hub product formed in the molding cavity 21 can be pushed out from bottom to top by the lifting push rod 112 .

[0048] Working principle: let the molten metal liquid in the aggregate tank 5 be introduced into the forming cavity 21 of the lower template 2 through multiple pouring bottom pipes 6 below the aggregate tank 5, let multiple pouring bottom pipes 6 pass through multiple pouring grooves 311 and enter the forming cavity 21, forming multiple pouring points in the forming cavity 21, so that the molten metal liquid is spread more evenly in the forming cavity 21, and at the same time, the nozzle of the pouring bottom pipe 6 is close to the bottom wall of the forming cavity 21, which can prevent the molten metal liquid from splashing when it falls due to the excessive height of the forming cavity 21, thereby preventing the molten metal from splashing when it falls. During the pouring process, the lifting part 7 is started, the connecting ring frame 8 and the fixed platform 411 are lifted, and the turntable 412 inside the fixed platform 411 and the collecting tank 5 on the turntable 412 are synchronously driven to rise. At this time, the pouring bottom pipe 6 below the collecting tank 5 rises in the forming cavity 21. When the molten metal liquid introduced by the pouring bottom pipe 6 is spread on the bottom layer of the forming cavity 21, as the pouring bottom pipe 6 rises, without blocking the pouring port of the pouring bottom pipe 6, the pouring bottom pipe 6 can always maintain a certain distance from the molten metal liquid inside the forming cavity 21. The molten metal continues to be poured. At the same time, during the rising process of the fixed platform 411, the internal threaded toothed disc 431 rises synchronously with the fixed platform 411, and the internal threaded toothed disc 431 rotates under the action of the thread of the lead screw 42, which will drive the linkage toothed disc 432 and the turntable 412 to rotate synchronously on the inner side of the fixed platform 411, thereby driving the collecting tank 5 and the multiple pouring bottom pipes 6 to rotate synchronously. At this time, the multiple pouring bottom pipes 6 will rotate along the edge of the forming cavity 21, so that the pouring bottom pipes 6 are still in a circular rotation state during the rising process. This allows the molten metal to be in a state of circulating rotation and falling, preventing the accumulation of the molten metal caused by the fixed landing point of the molten metal, and allowing the molten metal falling from multiple points to be further quickly and evenly spread in the molding cavity 21. When the pouring bottom pipe 6 rises to the top of the molding cavity 21, it stops. At this time, the molten metal is waited for to cool and form in the molding cavity 21, and then the lifting cylinder 33 is started to drive the upper template 31 to move upward, and then the lifting push rod 112 is used to push the wheel hub product formed in the molding cavity 21 upward.

[0049] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A forming device for an engineering vehicle wheel hub steel rim, characterized in that: include: A basic molding mechanism, the basic molding mechanism comprising a base (1), a lower template (2) and an upper template lifting assembly (3), the top wall of the lower template (2) being provided with a molding cavity (21), the upper template lifting assembly (3) comprising an upper template (31), the upper template (31) being in contact with the top wall of the lower template (2), and the upper template (31) being provided with a pouring groove (311) facing the molding cavity (21), the base (1) being arranged below the lower template (2); A lifting mechanism (11) is provided on the inner side of the base (1), and a lifting end of the lifting mechanism (11) passes through the bottom wall of the lower template (2) and acts on the interior of the molding cavity (21) from bottom to top; A lifting and pouring mechanism, the lifting and pouring mechanism comprising a pouring assembly, a lifting and rotating assembly (4) and a driving assembly; the lifting and rotating assembly (4) comprises a lifting ring platform (41), a guide screw (42) and a linkage rotating member (43); the lifting ring platform (41) is arranged above the upper template (31); the driving assembly acts on the lifting ring platform (41); the pouring assembly is arranged on the lifting ring platform (41), and the pouring end of the pouring assembly passes through the lifting ring platform (41) and the pouring groove (311) and is inserted into the molding cavity (21) of the lower template (2); the guide screw (42) is arranged vertically on the top wall of the lower template (2) and passes through the upper template (31); the linkage rotating member (43) is arranged between the lifting ring platform (41) and the guide screw (42); the driving assembly drives the lifting ring platform (41) and the pouring assembly to move upward; The pouring assembly comprises a material collecting tank (5) and a pouring bottom pipe (6), wherein the material collecting tank (5) is arranged on the lifting and rotating assembly (4), and the pouring bottom pipe (6) is arranged vertically at the bottom end of the material collecting tank (5), and the pouring bottom pipe (6) passes through the lifting and rotating assembly (4) and the upper template (31) and is inserted into the molding cavity (21) of the lower template (2); Wherein, the bottom end of the pouring bottom pipe (6) is close to the bottom wall of the molding cavity (21); The lifting ring platform (41) includes a fixed platform (411) and a turntable (412), wherein the fixed platform (411) is a circular ring-shaped platform and is arranged on the vertical driving end of the driving assembly, and the turntable (412) is rotatably mounted on the inner side of the fixed platform (411), the collecting tank (5) is arranged at the end of the turntable (412), and the pouring bottom pipe (6) passes through the turntable (412); The linkage rotating member (43) includes an internally threaded toothed disc (431) and a linkage toothed disc (432). A receiving disc is provided on one side of the fixed platform (411). The internally threaded toothed disc (431) is rotatably mounted on the receiving disc. The linkage toothed disc (432) is sleeved on the outside of the turntable (412), and the internally threaded toothed disc (431) is meshed with the linkage toothed disc (432). An internally threaded hole is provided at the center of the internally threaded toothed disc (431). The lead screw (42) vertically penetrates the receiving disc and is threadedly penetrated through the internally threaded hole of the internally threaded toothed disc (431). When the internally threaded toothed disc (431) rises synchronously with the fixed platform (411), the internally threaded toothed disc (431) rotates under the action of the thread of the lead screw (42) and drives the linkage toothed disc (432) and the turntable (412) to rotate synchronously.

2. The forming device for an engineering vehicle wheel hub steel rim according to claim 1, characterized in that: The driving assembly comprises a lifting member (7) and a connecting ring frame (8), wherein the lifting member (7) is vertically arranged on one side of the basic forming mechanism, and one end of the connecting ring frame (8) is connected to the lifting end of the lifting member (7), and the other end is connected to the fixed platform (411).

3. The forming device for an engineering vehicle wheel hub steel rim according to claim 1, characterized in that: The diameter of the internally threaded toothed disc (431) is smaller than the diameter of the linkage toothed disc (432).

4. The forming device for an engineering vehicle wheel hub steel rim according to claim 1, characterized in that: A gate turntable (312) is rotatably mounted at the center of the upper template (31), the pouring groove (311) is provided on the gate turntable (312), and the pouring bottom pipe (6) vertically passes through the pouring groove (311) and is inserted into the molding cavity (21) of the top wall of the lower template (2); A plurality of the pouring grooves (311) are provided on the gate turntable (312), and are distributed in a circular manner around the edge of the gate turntable (312). A plurality of the pouring bottom pipes (6) are provided at the bottom end of the aggregate tank (5), and the pouring bottom pipes (6) correspond to the positions of the pouring grooves (311) on the gate turntable (312).

5. The forming device for an engineering vehicle wheel hub steel rim according to claim 1, characterized in that: The upper mold lifting assembly (3) also includes guide side columns (32) and a lifting cylinder (33). The guide side columns (32) are arranged in a group of four in a vertical direction at the four corners of the top surface of the lower mold plate (2). The four corners of the upper mold plate (31) are slidably mounted on the four guide side columns (32). The lifting cylinder (33) is arranged on one side of the base (1), and the output end of the lifting cylinder (33) acts on the plate body of the upper mold plate (31).

6. The forming device for an engineering vehicle wheel hub steel rim according to claim 1, characterized in that: The lifting mechanism (11) includes a guide column (111) and a lifting push rod (112), wherein the guide column (111) is vertically arranged between the base (1) and the lower template (2), and the lifting push rod (112) is arranged on the guide column (111), and the lifting end of the lifting push rod (112) passes through the lower template (2) and is inserted into the molding cavity (21); The lifting end of the lifting push rod (112) is in contact with the bottom wall of the molding cavity (21).

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