High-strength impact-resistant cast wheel rim for mine car wheel pair and forming method

Abstract

The present application relates to the field of mining machinery manufacturing and casting automation technology, and discloses a high-strength impact-resistant cast wheel rim for mine car wheel pairs and a forming method, which comprises a fixing plate, a conveyor belt and a piece taking device, wherein the piece taking device comprises a power device, a bending device and a grabbing device. The power device drives the rotation of the rotating round cover in multiple directions through gear transmission to adjust the operation direction. The bending device realizes flexible adjustment of the spatial position of the grabbing device through linkage and telescopic folding of the folding arm to adapt to the internal piece taking of the mold. The grabbing device is driven by half-round gear meshing to cooperate with pressure sensing and flexible clamping of the silica gel pad to avoid damage to the wheel rim. The present application can replace manual piece taking through the cooperation of various devices, quickly complete grabbing and transfer, improve efficiency, adapt to different specifications of wheel rims, reduce the damage rate of castings, and is suitable for large-scale production needs in mines.

Description

Technical Field

[0001] This invention relates to the field of mining machinery manufacturing and casting automation technology, specifically to high-strength impact-resistant cast wheel rims for mining vehicle wheelsets and their forming method. Background Technology

[0002] As the core load-bearing component of mining transportation equipment, mine car wheelsets require rims with high strength and impact resistance to adapt to the complex and harsh working environment of mines. Therefore, they are mostly formed using casting technology. In the mass production of wheel rims, the part removal process after casting is a key step connecting casting and subsequent processing, directly affecting production efficiency, casting quality, and operational safety.

[0003] Currently, rim removal in the industry mainly relies on manual operation or traditional rigid robotic arms. Manual removal requires operators to work at close range in a high-temperature casting environment, which is not only labor-intensive and risky, but also inefficient and prone to surface damage to castings due to human impact, making it difficult to meet the needs of large-scale production. While traditional rigid robotic arms achieve partial automation, they have significant technical shortcomings: First, their movement trajectory is fixed, lacking flexible angle adjustment and spatial adaptability, making it difficult to reach into the narrow spaces inside the casting mold and prone to interference with the mold; second, their clamping mechanisms are mostly of fixed specifications, unable to adapt to rim products of different diameters, resulting in poor versatility; third, they lack a pressure feedback adjustment mechanism, making it impossible to precisely control the clamping force, which can easily cause indentations and deformation on the surface of high-strength, impact-resistant rims, affecting product precision.

[0004] Furthermore, existing material handling equipment is mostly an independent operating unit, which is not well connected with subsequent transportation links and requires manual assistance for transfer, further reducing production continuity. Therefore, this invention provides a high-strength, impact-resistant cast wheel rim for mine car wheelsets and a forming method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-strength, impact-resistant cast wheel rim for mine car wheelsets and a forming method thereof, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-strength impact-resistant cast rim for mine car wheelsets and a forming method thereof, comprising a fixing plate, a conveyor belt connected to the inner surface of the fixing plate, and a part-picking device connected to the outer side of the conveyor belt, the part-picking device being used to accurately pick up the casting after the rim is cast and transfer it to the subsequent processing station, thus meeting the automated part-picking requirements of high-strength impact-resistant cast rims. The part-picking device includes a power unit, a bending device, and a gripping device. The power unit is used to drive the bending device fixedly connected to the top to rotate in multiple directions, thereby flexibly adjusting the working direction and adapting to the part-picking needs of different workstations. The bending device is used to adjust the spatial position and height of the gripping device through the linkage extension and retraction of the folding arm, so as to realize close-range gripping and smooth transfer of the casting. The gripping device is used to firmly hold the cast rim, and adjusts the gripping force through pressure feedback to avoid damage to the surface of the casting, while adapting to the gripping needs of rims of different specifications.

[0007] As a preferred embodiment of the present invention, the power device includes four support bases, a base plate is fixedly connected to the top of the four support bases, a shell is fixedly connected to the top of the base plate, and a first drive block is fixedly connected to the center of the shell.

[0008] As a preferred embodiment of the present invention, a first gear and a second gear are movably connected to the top output shaft end of the first drive block, a first rotating shaft is fixedly connected to the top of the first gear, a rotating cover is fixedly connected to the top of the first rotating shaft, and bending devices are fixedly connected to both sides of the rotating cover.

[0009] As a preferred embodiment of the present invention, the bending device includes two support plates. The inner bottom sides of the two support plates are fixedly connected to both sides of the rotating cover. The outer top of the two support plates is fixedly connected to a second driving block. The output shaft ends of the two second driving blocks are connected to a moving block. The outer bottom ends of the two moving blocks are correspondingly connected to a first folding arm.

[0010] As a preferred embodiment of the present invention, the top ends of the two movable blocks are movably connected to a long rod, the center of the long rod is connected to a second folding arm, the top of the second folding arm and the top of the two first folding arms are respectively connected to a third folding arm, and the inner side of the top of the third folding arm is movably connected to a gripping device.

[0011] As a preferred embodiment of the present invention, the gripping device includes a polygonal block, the rear end protrusion of which is movably connected to the inner side of the top of the third folding arm, and the top two ends of the polygonal block are movably connected to a second rotating shaft, and the outer surfaces of the two second rotating shafts are movably connected to a semi-circular gear.

[0012] As a preferred embodiment of the present invention, the rear end protrusions of the two semi-circular gears are movably connected to gripping blocks, the top center of the two gripping blocks is movably connected to one end of a connecting rod, and the other end of the two connecting rods is movably connected to the top of the polygonal block. The inner surfaces of the two gripping blocks are connected to silicone pads, and pressure sensing points are embedded inside to collect the contact pressure distribution between the casting and the gripper in real time during the clamping process.

[0013] Compared with the prior art, the beneficial effects of the present invention are: (1) The high-strength impact-resistant cast rim of mine car wheels and its forming method, the part-retrieving device, through the coordinated action of the power device, bending device and gripping device, replaces the traditional manual part-retrieving method. It can complete the grabbing and transfer within a certain time after the rim is cast, thus improving the part-retrieving efficiency per shift. Its characteristics are suitable for high-strength impact-resistant cast rims, avoiding damage to the castings caused by manual handling, while reducing the safety risks to operators in high-temperature environments, and meeting the continuous operation requirements of large-scale casting production lines.

[0014] (2) The high-strength impact-resistant cast rim of the mine car wheel and its forming method, through the first drive block driving the first gear and the second gear to mesh and transmit power, drive the first rotating shaft and the rotating cover fixedly connected to the top of the first gear to achieve multi-directional rotation, and with the stable support of four support bases and the base plate, the bending device and the gripping device can flexibly align with the rim castings at different work positions. Compared with the fixed part-retrieving mechanism, this operation coverage is expanded, adapting to multi-mold rotation production scenarios and reducing equipment adjustment time.

[0015] (3) The high-strength impact-resistant cast rim of the mine car wheel and its forming method, through the second drive block driving the moving block to slide linearly along the guide direction of the support plate, can drive the first folding arm connected to its bottom outer side to rotate around the connection point. At the same time, the top of the moving block also pulls the second folding arm to adjust the angle synchronously through the long rod, so as to realize the coordinated folding and extension of the first folding arm and the second folding arm. The third folding arm is driven by the linkage to complete the fine adjustment of the end position.

[0016] (4) The high-strength impact-resistant cast rim of the mine car wheel and its forming method, through the meshing transmission of the second rotating shaft and two semi-circular gears, can drive the gripping block to achieve opening and closing action, and can be adapted to rims of different diameters. The silicone pad connected to the inner surface of the gripping block can buffer the clamping impact force, and with the pressure sensing point embedded inside, it can provide real-time feedback on the pressure distribution. When the local pressure is detected to exceed a certain range, the clamping force will be automatically adjusted to effectively avoid indentations or deformation on the rim surface.

[0017] (5) High-strength impact-resistant cast wheel rims and forming method for mine car wheelsets: by using polygonal blocks as the core support components of the gripping device, the second rotating shafts connected at both ends and the semi-circular gears will form a symmetrical transmission structure, which, together with the connecting rod, limits the traction of the gripping blocks, so that the clamping force is evenly distributed between the two gripping blocks.

[0018] (6) The high-strength impact-resistant cast rims for mine car wheelsets and their forming method form a closed-loop linkage through the rotation adjustment of the power unit, the position adjustment of the bending device, and the flexible clamping of the gripping device. Combined with the conveyor belt, this achieves seamless connection between the casting and subsequent processing of the rims. Compared with traditional production lines, this reduces manual operation steps, shortens the turnover time of a single rim, and improves the consistency of part picking through precise control of the mechanical structure. This provides a stable supply of raw materials for subsequent processing steps and helps to upgrade the casting production line to intelligent levels. Attached Figure Description

[0019] Figure 1 This is a side view of the present invention; Figure 2 This is a schematic diagram of the overall part-retrieving device of the present invention; Figure 3 This is a schematic diagram of the internal connection relationship of the power device of the present invention; Figure 4 This is a schematic diagram of the bending device of the present invention; Figure 5 This is a schematic diagram showing the connection relationship between the rotating dome and the support plate of the present invention; Figure 6 This is a schematic diagram of the gripping device of the present invention; Figure 7 This is a schematic diagram showing the connection relationship between the third folding arm and the polygonal block of the present invention; Figure 8 This is a schematic diagram showing the connection relationship between the two ends of the gripper block of the present invention.

[0020] In the diagram: 1. Fixed plate; 2. Conveyor belt; 3. Picking device; 31. Power unit; 311. Support base; 312. Base plate; 313. Outer shell; 314. First drive block; 315. First gear; 316. Second gear; 317. First rotating shaft; 318. Rotating cover; 32. Bending device; 321. Support plate; 322. Second drive block; 323. Moving block; 324. First folding arm; 325. Long rod; 326. Second folding arm; 327. Third folding arm; 33. Gripping device; 331. Polygonal block; 332. Second rotating shaft; 333. Semi-circular gear; 334. Gripping block; 335. Connecting rod; 336. Silicone pad. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Please refer to Figure 1-2 The high-strength impact-resistant cast rim of mine car wheelset and its forming method include a fixing plate 1, a conveyor belt 2 connected to the inner surface of the fixing plate 1, and a part-picking device 3 connected to the outer side of the conveyor belt 2. The part-picking device 3 is used to accurately pick up the casting after the rim is cast and transfer it to the subsequent processing station, which is adapted to the automated part-picking requirements of high-strength impact-resistant cast rim. The part-picking device 3 includes a power unit 31, a bending device 32, and a gripping device 33. The power unit 31 is used to drive the bending device 32, which is fixedly connected to the top, to rotate in multiple directions, thereby flexibly adjusting the working direction and adapting to the part-picking needs of different workstations. The bending device 32 is used to adjust the spatial position and height of the gripping device 33 through the linkage extension and retraction of the folding arm, so as to realize close-range gripping and smooth transfer of the casting. The gripping device 33 is used to firmly clamp the cast rim, and adjusts the clamping force through pressure sensing feedback to avoid damage to the surface of the casting, while adapting to the clamping requirements of different rim specifications. The part-picking device 3, through the coordinated action of the power unit 31, the bending device 32, and the gripping device 33, replaces the traditional manual part-picking method. It can complete the gripping and transfer within a certain period of time after the wheel rim is cast, thus improving the part-picking efficiency per shift. Its suitability for high-strength, impact-resistant cast wheel rims avoids damage to the castings caused by manual handling, while also reducing the safety risks to operators in high-temperature environments, and meeting the continuous operation requirements of large-scale casting production lines.

[0023] Example 2: Based on Example 1, as follows Figure 3-8 As shown, the power unit 31 includes four support bases 311, and a base plate 312 is provided on the top of the four support bases 311. The top of the four support bases 311 is fixedly connected to the bottom of the base plate 312 at four ends. A housing 313 and a first drive block 314 are provided on the top and center of the base plate 312. The top and center of the base plate 312 are fixedly connected to the bottom of the housing 313 and the first drive block 314.

[0024] The first drive block 314 has a first gear 315 and a second gear 316 at its top output shaft end, and the top output shaft end of the first drive block 314 is movably connected to the center of the first gear 315 and the second gear 316. The first gear 315 has a first rotating shaft 317 at its top, and the top of the first gear 315 is fixedly connected to the bottom of the first rotating shaft 317. The first rotating shaft 317 has a rotating cover 318 at its top, and the top of the first rotating shaft 317 is fixedly connected to the center of the rotating cover 318. The rotating cover 318 has bending devices 32 on both sides. The first drive block 314 drives the first gear 315 and the second gear 316 to mesh and transmit power, thereby driving the first rotating shaft 317 and the rotating cover 318 fixedly connected to the top of the first gear 315 to achieve multi-directional rotation. With the stable support of the four support bases 311 and the base plate 312, the bending device 32 and the gripping device 33 can be flexibly aligned with the rim castings at different work positions. Compared to a fixed part-picking mechanism, this method expands the operational coverage, adapts to multi-mold rotation production scenarios, and reduces equipment adjustment time. Furthermore, the rotating round cover 318 is fixedly connected to the bottom of the bending device 32 on both sides.

[0025] The bending device 32 includes two support plates 321. The inner bottom sides of the two support plates 321 are fixedly connected to both sides of the rotating cover 318. The outer top of each of the two support plates 321 is provided with a second driving block 322, and the outer top of each of the two support plates 321 is fixedly connected to the inner side of the second driving block 322. The output shaft end of each of the two second driving blocks 322 is provided with a moving block 323, and the output shaft end of each of the two second driving blocks 322 is connected to the inner bottom of the moving block 323. The outer bottom of each of the two moving blocks 323 is provided with two first folding arms 324, and the outer bottom of each of the two moving blocks 323 is correspondingly connected to the bottom of the two first folding arms 324.

[0026] Two movable blocks 323 are provided with long rods 325 at their top ends, and the top ends of the two movable blocks 323 are movably connected to the two ends of the long rods 325. A second folding arm 326 is provided at the center of the long rod 325, and the center of the long rod 325 is connected to the bottom of the second folding arm 326. A third folding arm 327 is provided at the top of the second folding arm 326 and the two first folding arms 324, and the top of the second folding arm 326 and the two first folding arms 324 are correspondingly connected to the bottom of the third folding arm 327. A gripping device 33 is provided on the inner side of the top of the third folding arm 327. The movable blocks 323 are driven by the second driving block 322 to slide linearly along the guide direction of the support plate 321, which can drive the first folding arm 324 connected to its bottom outer side to rotate around the connection point. At the same time, the top of the movable block 323 also pulls the second folding arm 326 to adjust the angle synchronously through the long rod 325, so as to realize the coordinated folding and extension of the first folding arm 324 and the second folding arm 326. The third folding arm 327 is driven by a linkage to perform fine-tuning of its end position. The folding arms are hinged with high-strength pins and wear-resistant bushings to reduce the coefficient of rotational friction. This allows for close-range gripping of wheel rims within the narrow spaces of the casting mold, while the multi-stage folding provides cushioning for smooth transfer of the casting. This solves the problems of poor adaptability to complex handling spaces and easy interference with molds caused by the fixed motion trajectory of traditional rigid robotic arms. Furthermore, the inner top of the third folding arm 327 is movably connected to the rear end of the gripping device 33.

[0027] The gripping device 33 includes a polygonal block 331. The protruding part at the rear end of the polygonal block 331 is movably connected to the inner side of the top of the third folding arm 327. A second rotating shaft 332 is provided at both ends of the top of the polygonal block 331, and both ends of the top of the polygonal block 331 are movably connected to the bottom of the second rotating shaft 332. A semi-circular gear 333 is provided on the outer surface of both second rotating shafts 332. By making the polygonal block 331 the core support component of the gripping device 33, the second rotating shafts 332 and the semi-circular gears 333 connected at both ends will form a symmetrical transmission structure. With the help of the connecting rod 335 to limit the traction of the gripping block 334, the clamping force is evenly distributed between the two gripping blocks. This symmetrical linkage design avoids the skew problem caused by single-drive clamping, ensures that the rim maintains a horizontal posture during the transfer process, reduces the risk of casting slippage, and the outer surfaces of both second rotating shafts 332 are movably connected to the center of the semi-circular gear 333.

[0028] Each of the two semicircular gears 333 has a gripping block 334 on its rear end protrusion, and the rear end protrusions of the two semicircular gears 333 are movably connected to the top and bottom of the gripping block 334. Each gripping block 334 has a connecting rod 335 at its top center, and the top center of each gripping block 334 is movably connected to one end of the connecting rod 335. The other end of each connecting rod 335 is movably connected to the top of the polygonal block 331. Each gripping block 334 has a silicone pad 336 on its inner surface. Through the meshing transmission between the second rotating shaft 332 and the two semicircular gears 333, it can carry... The movable gripper block 334 realizes the opening and closing action, which can be adapted to rims of different diameters. The silicone pad 336 connected to the inner surface of the gripper block 334 can buffer the clamping impact force. With the internally embedded pressure sensing point, the pressure distribution is fed back in real time. When the local pressure is detected to exceed a certain range, the clamping force will be automatically adjusted to effectively avoid indentation or deformation on the rim surface. It is especially suitable for the precision part removal requirements of high-strength impact-resistant cast rims. The inner surfaces of both gripper blocks 334 are connected to the outer side of the silicone pad 336, and the internal pressure sensing points are embedded to collect the contact pressure distribution between the casting and the clamper in real time during the clamping process.

[0029] The working principle of this invention is as follows: After the rim is cast, the part-taking device 3 starts operation. The first drive block 314 in the power device 31 outputs power and drives the first gear 315 and the second gear 316 connected to the top output shaft to mesh and transmit power. Then, it drives the first rotating shaft 317 fixedly connected to the top of the first gear 315 to rotate, thereby enabling the rotating round cover 318 fixedly connected to the top of the first rotating shaft 317 to rotate in multiple directions. With the stable support of the four support bases 311 and the base plate 312, the bending device 32 fixedly connected to both sides of the rotating round cover 318 can flexibly align with the rim casting at the target station. Subsequently, the bending device 32 begins to operate. The output shaft end of the second drive block 322, which is fixedly connected to the top outer side of the two support plates 321, drives the moving block 323 to slide linearly along the guide direction of the support plate 321. This causes the first folding arm 324, which is connected to the bottom outer side of the moving block 323, to rotate around the connection point. At the same time, the top of the moving block 323 pulls the second folding arm 326, which is connected to the center, through the long rod 325 to adjust the angle synchronously, so as to realize the coordinated folding and extension of the first folding arm 324 and the second folding arm 326. Then, through the linkage transmission, the third folding arm 327, which is connected to the top of the two, completes the fine adjustment of the end position. The folding arms are connected by a high-strength pin and hinge with a wear-resistant bushing to ensure that the movement is flexible and stable, and can penetrate into the narrow space inside the casting mold to get close to the rim. Finally, the gripping device 33 performs the gripping action. The polygonal block 331 serves as the core support component. The semi-circular gears 333 on the outer surface of the second rotating shaft 332, which are movably connected to both ends of the top of the block, mesh with each other and drive the gripping block 334, which is movably connected to the rear end of the semi-circular gear 333, to open and close. At the same time, the connecting rod 335 plays a traction and limiting role on the gripping block 334, so that the gripping force is evenly distributed. The silicone pad 336, which is fixedly connected to the inner surface of the gripping block 334, buffers the clamping impact force. The pressure sensing point embedded inside collects the contact pressure distribution in real time. When the local pressure exceeds the preset range, the clamping force is automatically adjusted to avoid damage to the rim surface and to adapt to different specifications of rims. Once the rim is securely clamped, the folding arm in the bending device 32 extends and retracts in tandem, and the rotating mechanism of the power device 31 works in coordination to smoothly transfer the rim to the conveyor belt 2 or subsequent processing station, completing the automated part removal process. The entire process, through the coordinated cooperation of various devices, replaces the traditional manual part removal, improves efficiency, and ensures operational safety and casting quality.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength, impact-resistant cast wheel rim for mine car wheels and a forming method thereof, comprising a fixing plate (1), wherein a conveyor belt (2) is connected to the inner surface of the fixing plate (1), characterized in that: The conveyor belt (2) is connected to a part-grabbing device (3) on the outside. The part-grabbing device (3) is used to accurately grab the casting after the rim is cast and transfer it to the subsequent processing station, which is adapted to the automated part-grabbing requirements of high-strength impact-resistant cast rims. The part-picking device (3) includes a power unit (31), a bending device (32) and a gripping device (33). The power unit (31) is used to drive the bending device (32) fixedly connected to the top to rotate in multiple directions, thereby flexibly adjusting the working direction and adapting to the part-picking needs of different workstations. The bending device (32) is used to adjust the spatial position and height of the gripping device (33) by the linkage extension and retraction of the folding arm, so as to realize close-range gripping and smooth transfer of the casting. The gripping device (33) is used to firmly clamp the cast rim, and adjusts the clamping force through pressure sensing feedback to avoid damage to the surface of the casting, while adapting to the clamping requirements of different rim specifications.

2. The high-strength impact-resistant cast rim for mine car wheelsets and its forming method according to claim 1, characterized in that: The power unit (31) includes four support bases (311), and a base plate (312) is fixedly connected to the top of the four support bases (311). A shell (313) is fixedly connected to the top of the base plate (312), and a first drive block (314) is fixedly connected to its center.

3. The high-strength impact-resistant cast rim for mine car wheelsets and its forming method according to claim 2, characterized in that: The first drive block (314) has a first gear (315) and a second gear (316) movably connected to the top output shaft end. The first gear (315) has a first rotating shaft (317) fixedly connected to the top. The first rotating shaft (317) has a rotating cover (318) fixedly connected to the top. The rotating cover (318) has a bending device (32) fixedly connected to both sides.

4. The high-strength impact-resistant cast rim for mine car wheelsets and its forming method according to claim 3, characterized in that: The bending device (32) includes two support plates (321). The inner bottom sides of the two support plates (321) are fixedly connected to both sides of the rotating cover (318). The outer top of the two support plates (321) is fixedly connected to a second drive block (322). The output shaft ends of the two second drive blocks (322) are connected to a moving block (323). The outer bottom ends of the two moving blocks (323) are correspondingly connected to a first folding arm (324).

5. The high-strength impact-resistant cast rim for mine car wheelsets and its forming method according to claim 4, characterized in that: The top ends of the two movable blocks (323) are movably connected to a long rod (325), the center of the long rod (325) is connected to a second folding arm (326), the top of the second folding arm (326) is connected to a third folding arm (327) corresponding to the top of the two first folding arms (324), and the inner side of the top of the third folding arm (327) is movably connected to a gripping device (33).

6. The high-strength impact-resistant cast rim for mine car wheelsets and its forming method according to claim 5, characterized in that: The gripping device (33) includes a polygonal block (331), the rear end protrusion of the polygonal block (331) is movably connected to the inner side of the top of the third folding arm (327), and the top two ends of the polygonal block (331) are movably connected to a second rotating shaft (332), and the outer surfaces of the two second rotating shafts (332) are movably connected to a semi-circular gear (333).

7. The high-strength impact-resistant cast rim for mine car wheelsets and its forming method according to claim 6, characterized in that: Both of the rear protrusions of the two semi-circular gears (333) are movably connected to gripping blocks (334). The top center of each of the two gripping blocks (334) is movably connected to one end of a connecting rod (335), and the other end of each connecting rod (335) is movably connected to the top of a polygonal block (331). The inner surfaces of the two gripping blocks (334) are connected to silicone pads (336), and pressure sensing points are embedded inside to collect the contact pressure distribution between the casting and the gripper in real time during the clamping process.

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