An RGV trolley for transporting wheel blanks and its usage method

Abstract

This invention discloses an RGV trolley for transporting wheel blanks, comprising a traveling mechanism, a lifting mechanism, a telescopic mechanism, and an anti-tipping mechanism. The lifting mechanism is mounted on the frame of the traveling mechanism, and the telescopic mechanism is mounted on the upper base plate of the lifting mechanism. The telescopic mechanism extends and retracts horizontally in a direction perpendicular to the traveling direction of the RGV trolley. The anti-tipping mechanism is mounted beside the frame on the side of the RGV trolley opposite to the direction of extension of the telescopic mechanism. This invention's RGV trolley for transporting wheel blanks is not only simple in structure, convenient to use, and easy to operate, but also highly automated, fast, stable, low-cost, simple to operate and maintain, and highly reliable. It effectively solves the shortcomings of existing methods for transporting wheel blanks using traveling vehicles, realizing intelligent transportation of wheel blanks between different designated stations. This invention also discloses a method for using the RGV trolley for transporting wheel blanks.

Description

Technical Field

[0001] This invention belongs to the field of wheel blank transportation technology, specifically relating to an RGV trolley for transporting wheel blanks and its usage method. Background Technology

[0002] The production of finished wheels involves processes such as blanking, heating, rolling, heat treatment, rough machining, finish machining, and inspection. Currently, wheel blanks cut to a fixed length by a disc cold saw in the blanking area are lifted by a gantry crane located at the cold saw outlet onto a chute at a certain angle to the ground. The blanks slide down the chute to the ground, where an overhead crane operator lifts them to designated storage areas based on wheel specifications. When a specific wheel specification is reached, the operator lifts the blank from the storage area onto a pusher trough next to the heating furnace. A hydraulic pusher then pushes the blank to the furnace door, where a forklift is manually operated to deliver it into the furnace for heating. This current method of storing and transporting wheel blanks is inadequate for individual piece tracking and is unsuitable for the production of high-quality wheels. Therefore, an intelligent transformation of the entire logistics system from blanking to heating is necessary.

[0003] The precise transport of wheel blanks from one station to another is a crucial step in the intelligent upgrading of the wheel blank logistics system, from the material preparation process to the heating process. However, existing overhead crane methods for transporting wheel blanks cannot achieve automation, are time-consuming and labor-intensive, and cannot achieve precise placement of the blanks. Collisions and rolling are unavoidable during transport, posing safety hazards. To address the shortcomings of existing overhead crane methods for transporting wheel blanks, this invention provides a method for...

[0004] A search revealed that Chinese invention patent application number CN201910878866.5, published on November 19, 2019, provides an RGV transport vehicle, including a walking mechanism, a lifting mechanism, an automatic charging device, and a control system. The lifting mechanism includes a crank-connecting rod mechanism, a parallel four-bar linkage, and a swing arm sliding sleeve mechanism. The swing arm sliding sleeve mechanism includes a pair of swing arms and a pair of vertically arranged sliding columns, with sliding sleeves slidably connected to the sliding columns. One end of each swing arm is hinged to a corresponding sliding sleeve, and the other end is hinged to a parallel motion rod. The automatic charging device includes a charging socket assembly and a charging plug assembly. The charging plug assembly includes a guide post and a charging plug, which are floatingly connected to the housing. The charging socket assembly has a guide hole and a charging socket; after the guide post is inserted into the guide hole, the charging plug engages with the charging socket. The control system controls the sequential operation of the walking mechanism, the lifting mechanism, and the automatic charging device.

[0005] A Chinese utility model patent application (CN202223087757.8) published on February 3, 2023, provides an RGV (Automated Guided Vehicle) cart, including a support arm, a traveling mechanism, a lifting mechanism, and a slewing mechanism. The slewing mechanism includes a slewing bearing, a turntable, a drive component, and a gear shaft. The turntable is rotatably mounted on the traveling mechanism, the slewing bearing is mounted on the turntable, and the drive component is mounted on the traveling mechanism and located within the slewing bearing. The output end of the drive component is connected to the slewing bearing via the gear shaft to drive the slewing bearing to rotate. The lifting mechanism is mounted on the turntable, and the support arm, used for gripping items, is mounted on the lifting mechanism. However, the technical solution of this patent still cannot solve the aforementioned technical problems. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an RGV trolley for transporting wheel blanks that is simple in structure, convenient to use and easy to operate. This invention also provides a method for using the RGV trolley for transporting wheel blanks, which effectively solves the shortcomings of the existing method of transporting wheel blanks by traveling vehicle and realizes intelligent transportation of wheel blanks between different set stations.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: an RGV trolley for transporting wheel blanks, comprising a traveling mechanism, a lifting mechanism, a telescopic mechanism, and an anti-tipping mechanism. The lifting mechanism is mounted on the frame of the traveling mechanism, the telescopic mechanism is mounted on the upper base plate of the lifting mechanism, and the telescopic mechanism extends and retracts horizontally in a direction perpendicular to the traveling direction of the RGV trolley. The anti-tipping mechanism is mounted on the side of the frame opposite to the direction in which the RGV trolley extends from the telescopic mechanism.

[0008] Furthermore, the walking mechanism includes a frame, a shaft assembly, a geared motor I, a drive wheel set, and a driven wheel set. The frame includes a main frame, an L-shaped base plate, and a bottom plate I. The L-shaped base plate is connected to the four corners of the main frame, and the bottom plate I is fixedly connected to the main frame and located on one side of the frame. The roller base of the anti-rollover mechanism is installed on the bottom plate I. The shaft assembly is fixedly connected to the lower part of the L-shaped base plate. The geared motor I is installed on the U-shaped mounting seat of the shaft assembly. The output shaft of the geared motor I is connected to the shaft I of the drive wheel set through a coupling I. The drive wheel set and the driven wheel set are respectively connected to their corresponding shaft assemblies.

[0009] Furthermore, the rotating shaft assembly includes a first rotating shaft, a first bushing, a second rotating shaft, a second bushing, a connecting plate, and a U-shaped mounting base. Two rows of tapered roller bearings are installed between the first rotating shaft and the first bushing, and between the second rotating shaft and the second bushing. The lower part of the second rotating shaft is connected to the U-shaped mounting base. One end of the connecting plate is connected to the outer wall of the second bushing, and the lower part of the first rotating shaft is connected to the other end of the connecting plate. The first bushing is fixedly connected to the L-shaped base plate.

[0010] Furthermore, the walking mechanism also includes a guide wheel assembly and an L-shaped mounting plate. The L-shaped mounting plate is set on both sides of the U-shaped mounting seat. The guide wheel assembly is fixedly connected to the L-shaped mounting plate through the guide wheel shaft and fixedly clamped to both sides of the guide rail. Bearings are installed between the guide wheel and the wheel shaft.

[0011] Furthermore, the lifting mechanism includes an upper base plate, a lower base plate, a reduction motor II, a trapezoidal lead screw, a trapezoidal nut, a linear guide pair, and a scissor lifting assembly. The lower base plate is fixedly mounted on the frame, the linear guide pair is mounted on the upper surface of the lower base plate, the scissor lifting assembly is disposed between the upper and lower base plates, the reduction motor II is mounted on the upper surface of the lower base plate, the output shaft of the reduction motor II is connected to the trapezoidal lead screw through a coupling II, and the trapezoidal nut is fixedly mounted on a connecting rod.

[0012] Furthermore, the scissor lift assembly includes a first support frame and a second support frame arranged intersecting each other. The first support frame and the second support frame are rotatably connected. The upper ends of the first support frame and the second support frame are rotatably connected to the lower surface of the upper base plate. The lower end of the first support frame is rotatably connected to the guide rail slider of the linear guide rail pair through a connecting rod. The guide rail slider is slidably connected to the linear guide rail. The lower end of the second support frame is rotatably connected to the upper surface of the lower base plate.

[0013] Furthermore, the telescopic mechanism includes a base, a reduction motor III, a transmission assembly, and a telescopic arm. The base is fixedly installed on the upper base plate of the lifting mechanism, the reduction motor III is fixedly installed on the base, the telescopic arm is slidably connected to the base, and a rack is provided on the lower surface of the telescopic arm. The rack meshes with the gear of the transmission assembly, and the output shaft of the reduction motor III is connected to the transmission assembly to drive the gear to rotate.

[0014] Furthermore, the anti-tipping mechanism includes a base support, an L-shaped mounting plate, a balance bar, rollers, and roller bases. The base support is fixedly installed on one side of the track at the receiving station and the unloading station. The RGV trolley travels on the track. The L-shaped mounting plate is fixedly connected to the base support. The balance bar is installed on the L-shaped mounting plate by adjusting bolts and nuts. The roller base is fixedly installed on the base plate I. The rollers are installed on the roller bases. When the roller bases follow the RGV trolley to the receiving station and the unloading station, the rollers are located below the balance bar and are in rolling contact with the balance bar.

[0015] Furthermore, the drive wheel assembly's shaft I is rotatably mounted on both sides of the U-shaped mounting base via bearing seats, and the driven wheel assembly's shaft II is rotatably mounted on both sides of the U-shaped mounting base via bearing seats. A mounting base plate for mounting the geared motor I is provided on the inner side of the U-shaped mounting base for mounting the drive wheel assembly. The geared motor I is fixedly mounted on the mounting base plate, and the output shaft of the geared motor I is connected to the drive wheel assembly's shaft I via a coupling.

[0016] The present invention also provides a method of using an RGV trolley for transporting wheel blanks. Based on the above-mentioned RGV trolley for transporting wheel blanks, the method of use includes the following steps:

[0017] When the S1.RGV trolley is in standby mode, the lifting mechanism is in the lowest position, the telescopic arm of the telescopic mechanism is retracted to the zero position, and the trolley stops at the designated position.

[0018] S2. When the loading tray on the loading platform is full of sawn wheel blanks, the electronic control unit sends a signal to the RGV trolley. The RGV trolley moves to the set loading position. The rollers of the anti-tipping mechanism are located directly below the balance bar and make rolling contact with the balance bar to prevent the RGV trolley from tipping over.

[0019] S3. The telescopic mechanism operates, positioning the telescopic arm directly below the loading tray containing the wheel blanks placed on the loading platform;

[0020] S4. The lifting mechanism works, driving the telescopic mechanism to rise to the set height, so that the telescopic arm lifts the loading tray containing the wheel blanks;

[0021] S5. The telescopic mechanism retracts, causing the telescopic arm carrying the wheel blank to retract to the zero position;

[0022] S6. The lifting mechanism returns to its lowest position, and the telescopic arm carrying the wheel blank descends along with the lifting mechanism;

[0023] The S7.RGV trolley's traveling mechanism is in operation. When the RGV trolley reaches the set unloading position, the RGV trolley stops moving.

[0024] S8. The lifting mechanism works, driving the telescopic mechanism to rise, so that the telescopic arm carrying the wheel blanks reaches the unloading height.

[0025] S9. The telescopic mechanism is activated, and the telescopic arm carrying the wheel blank extends, so that the wheel blank on the telescopic arm reaches directly above the receiving position.

[0026] S10. The lifting mechanism returns to the lowest position. During the descent of the lifting mechanism, the loading tray containing the wheel blanks is transferred from the telescopic arm to the support surface of the receiving position, and the loading tray containing the wheel blanks is unloaded onto the loading tray containing the wheel blanks.

[0027] S11. The telescopic mechanism retracts, and the telescopic arm retracts to the zero position;

[0028] After receiving the signal that unloading is complete, the S12.RGV trolley traveling mechanism drives the entire RGV trolley to travel along the guide rail to the designated position, and one work cycle ends.

[0029] The advantages of using the technical solution of this invention are:

[0030] 1. The RGV trolley for transporting wheel blanks in this invention can realize the automatic transportation of wheel blanks through intelligent upgrading and transformation of warehousing and logistics from the material unloading process to the heating process, and can also realize the precise placement of wheel blanks. At the same time, it can also meet the information tracking of the wheel blank transportation process. Moreover, after the transformation, there is no need for manual operation of the crane to handle wheel blanks, thus achieving the goal of reducing manpower and increasing efficiency.

[0031] 2. The RGV trolley for transporting wheel blanks of the present invention is not only simple in structure, convenient to use and easy to operate, but also, as a wheel blank handling device, has a high degree of automation, fast speed, good stability, low cost, simple operation and maintenance, and strong reliability. It effectively solves the shortcomings of the existing technology of using overhead cranes to transport wheel blanks and realizes intelligent transportation of wheel blanks between different set stations. Attached Figure Description

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0033] Figure 1 This is a schematic diagram of the RGV vehicle structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the RGV trolley traveling mechanism of the present invention;

[0035] Figure 3 This is a schematic diagram of the rotating shaft assembly of the walking mechanism of the present invention;

[0036] Figure 4 This is a schematic diagram of the lifting mechanism of the present invention;

[0037] Figure 5 This is a schematic diagram of the telescopic mechanism of the present invention;

[0038] Figure 6 This is a schematic diagram of the anti-tipping mechanism of the present invention.

[0039] The markings in the above diagram are as follows: 1. Walking mechanism; 2. Lifting mechanism; 3. Telescopic mechanism; 4. Anti-tipping mechanism. Detailed Implementation

[0040] In this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "planar direction," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0041] like Figures 1 to 6 As shown, an RGV trolley for transporting wheel blanks includes a traveling mechanism 1, a lifting mechanism 2, a telescopic mechanism 3, and an anti-tipping mechanism 4. The lifting mechanism 2 is mounted on the frame 101 of the traveling mechanism 1, and the telescopic mechanism 3 is mounted on the upper base plate 201 of the lifting mechanism 2. The telescopic mechanism 3 extends horizontally in a direction perpendicular to the traveling direction of the RGV trolley. The anti-tipping mechanism 4 is mounted beside the frame 101 on the side of the RGV trolley opposite to the direction in which the telescopic mechanism 3 extends. The RGV trolley for transporting wheel blanks of this invention is not only simple in structure, convenient to use, and easy to operate, but also highly automated, fast, stable, low-cost, simple to operate and maintain, and highly reliable. It effectively solves the shortcomings of existing methods for transporting wheel blanks by traveling vehicles and realizes intelligent transportation of wheel blanks between different designated stations.

[0042] The traveling mechanism 1 includes a frame 101, a shaft assembly 102, a geared motor I 103, a drive wheel set 105, and a driven wheel set 106. The frame 101 includes a main frame 1011, an L-shaped base plate 1012, and a bottom plate I 1013. The L-shaped base plate 1012 is connected to the four corners of the main frame 1011. The bottom plate I 1013 is fixedly connected to the main frame 1011 and located on one side of the frame 101. The roller base 407 of the anti-rollover mechanism 4 is installed on the bottom plate I 1013. The shaft assembly 102 is fixedly connected to the lower part of the L-shaped base plate 1012. The geared motor I 103 is installed on the U-shaped mounting seat 1028 of the shaft assembly 102. The output shaft of the geared motor I 103 is connected to the shaft I 1051 of the drive wheel set 105 through a coupling I 104. The drive wheel set 105 and the driven wheel set 106 are respectively connected to the corresponding shaft assembly 102. The traveling mechanism 1 also includes a guide wheel assembly 107 and an L-shaped mounting plate 1029. The L-shaped mounting plate 1029 is arranged on both sides of the U-shaped mounting base 1028. The guide wheel assembly 107 is fixedly connected to the L-shaped mounting plate 1029 through the guide wheel shaft 1071 and fixedly clamped to both sides of the guide rail. A bearing is installed between the guide wheel 1072 and the wheel shaft 1071.

[0043] Specifically, the walking mechanism 1 includes one drive wheel set, three driven wheel sets, and four guide wheel sets. The main frame 1011 is made of square tubing, which is rigid and lightweight. One side of the frame 101 is provided with a base plate I 1013 for fixing the roller base 407 of the anti-rollover mechanism. Four L-shaped base plates 1012 are fixed to both ends of the frame 101, and a rotating shaft assembly is fixed to the bottom of the L-shaped base plates.

[0044] The rotating shaft assembly 102 includes a first rotating shaft 1021, a first bushing 1022, a second rotating shaft 1023, a second bushing 1024, a connecting plate 1027, and a U-shaped mounting base 1028. Two rows of tapered roller bearings 1025 are installed between the first rotating shaft 1021 and the first bushing 1022, and between the second rotating shaft 1023 and the second bushing 1024. The lower part of the second rotating shaft 1023 is connected to the U-shaped mounting base 1028. One end of the connecting plate 1027 is connected to the outer wall of the second bushing 1024, and the lower part of the first rotating shaft 1021 is connected to the other end of the connecting plate 1027. The first bushing 1022 is fixedly connected to the L-shaped base plate 1012.

[0045] The shaft I 1051 of the drive wheel set 105 is rotatably mounted on the two side walls of the U-shaped mounting base 1028 via a bearing seat. The shaft II 1061 of the driven wheel set 106 is rotatably mounted on the two side walls of the U-shaped mounting base 1028 via a bearing seat. A mounting base plate 1031 for mounting the geared motor I 103 is provided on the inner side of the U-shaped mounting base 1028 on which the drive wheel set 105 is mounted. The geared motor I 103 is fixedly mounted on the mounting base plate 1031. The output shaft of the geared motor I 103 is connected to the shaft I 1051 of the drive wheel set 105 via a coupling.

[0046] Specifically, two rows of tapered roller bearings 1025 are installed between the first shaft 1021 and the first bushing 1022, and two rows of tapered roller bearings 1025 are installed between the second shaft 1023 and the second bushing 1024. The top of the two rows of tapered roller bearings 1025 is locked by a lock nut 1026. The lower part of the second shaft 1023 is connected to a U-shaped mounting seat 1028, which can rotate flexibly around the frame 101. The shaft I 1051 of the drive wheel set 105 is loosely fitted between the two side walls of the U-shaped mounting base 1028 via a bearing housing. Similarly, the shaft II 1061 of the driven wheel set 106 is loosely fitted between the two side walls of the U-shaped mounting base 1028 via a bearing housing. A geared motor I 103 mounting base 1031 is fixedly connected to the inner side of the U-shaped mounting base 1028 at the drive wheel set 105. The geared motor I 103 is fixedly mounted on the mounting base 1031. The output end of the geared motor I 103 is connected to the shaft I 1051 of the drive wheel set 105 via a coupling I 104. The geared motor I 103 drives the drive wheel 1053 on the shaft I 1051 of the drive wheel set 105 to rotate. The drive wheel 1053 drives the frame 101 to move. The three driven wheels 1063 follow the rotation, thereby driving the entire RGV trolley to travel on the guide rail. L-shaped mounting plates 1029 are fixedly connected to both ends of the U-shaped mounting base 1028. The guide wheel assembly 107 is fixedly connected to the L-shaped mounting plate 1029 through the guide wheel shaft 1071 and is fixedly clamped to both sides of the guide rail. A bearing 1073 is inlaid between the guide wheel 1072 and the wheel shaft 1071 to reduce the frictional resistance during guidance. When the RGV trolley turns, the guide wheel assembly 107 moves with the U-shaped mounting base 1028, that is, it can rotate freely around the frame 101, which plays an adaptive guidance role.

[0047] The lifting mechanism 2 includes an upper base plate 201, a lower base plate 202, a reduction motor II 203, a trapezoidal lead screw 205, a trapezoidal nut 206, a linear guide pair 209, and a scissor lifting assembly 210. The lower base plate 202 is fixedly mounted on the frame 101. The linear guide 2091 of the linear guide pair 209 is mounted on the upper surface of the lower base plate 202. The scissor lifting assembly 210 is disposed between the upper base plate 201 and the lower base plate 202. The reduction motor II 203 is mounted on the upper surface of the lower base plate 202. The output shaft of the reduction motor II 203 is connected to the trapezoidal lead screw 205 through a coupling II 204. The trapezoidal nut 206 is fixedly mounted on the connecting rod 207. To better facilitate the rotation of the trapezoidal lead screw 205, bearing seats 208 are provided at both ends of the trapezoidal lead screw 205. The trapezoidal lead screw 205 is mounted on the lower base plate 202 through the bearing seats 208. A trapezoidal nut 206 is sleeved on the trapezoidal lead screw 205, and the trapezoidal nut 206 meshes with the trapezoidal lead screw 205, allowing relative movement between the trapezoidal nut 206 and the trapezoidal lead screw 205. The lower end of the scissor lifting assembly 210 is rotatably connected to the upper surface of the lower base plate 202, and the upper end of the scissor lifting assembly 210 is rotatably connected to the lower surface of the upper base plate 201.

[0048] The scissor lift assembly 210 includes a first support frame 2101 and a second support frame 2102 arranged intersecting each other. The first support frame 2101 and the second support frame 2102 are rotatably connected. The upper ends of the first support frame 2101 and the second support frame 2102 are rotatably connected to the lower surface of the upper base plate 201. The lower end of the first support frame 2101 is rotatably connected to the guide rail slider 2092 of the linear guide rail pair 209 through a connecting rod 207. The guide rail slider 2092 is slidably connected to the linear guide rail 2091. The lower end of the second support frame 2102 is rotatably connected to the upper surface of the lower base plate 202.

[0049] Specifically, the upper base plate 201 and the lower base plate 202 have a hollow structure. The distance between the upper base plate 201 and the lower base plate 202 is adjusted by setting a pair of scissor-type lifting components 210. Each scissor-type lifting component 210 includes a first support frame 2101 and a second support frame 2102 arranged in a cross configuration. In order to better realize the rotation of the trapezoidal screw 205, bearing seats 208 are provided at both ends of the trapezoidal screw 205 to reduce the external friction experienced by the trapezoidal screw 205. With the above structure, the geared motor II 203 drives the trapezoidal screw 205 to rotate through the coupling II 204. Then, the nut 206 of the trapezoidal screw 205 drives the connecting rod 207 to move along the guide rail 2091 of the linear guide pair 209, thereby driving the first support frame 2101 to move and realize the lifting mechanism 2. The lifting mechanism 2 can achieve self-locking by using the trapezoidal screw 205 and nut 206 for transmission.

[0050] The lifting mechanism 2 is located between the drive wheel set 105 and the driven wheel set 106, and is enclosed within the frame 101. During operation, the entire weight of the trolley is distributed among the four wheel sets, ensuring the stability of the trolley. The upper base plate 201 and the lower base plate 202 adopt a hollow design, and the drive device of the telescopic mechanism is located between the scissor lifting components, effectively compressing the installation height of the RGV trolley and thus reducing the requirements for the height of the workstation rack.

[0051] The telescopic mechanism 3 includes a base 301, a geared motor Ⅲ 302, a transmission assembly, and a telescopic arm 308. The base 301 is fixedly installed on the upper base plate 202 of the lifting mechanism 2. The geared motor Ⅲ 302 is fixedly installed on the base 301. The telescopic arm 308 is slidably connected to the base 301. The lower surface of the telescopic arm 308 is provided with a rack 307. The rack 307 meshes with the gear of the transmission assembly. The output shaft of the geared motor Ⅲ 302 is connected to the transmission assembly to drive the gear to rotate, thereby driving the rack to move, so as to realize the extension and retraction of the telescopic arm 308.

[0052] Specifically, the telescopic mechanism 3 is used for horizontal extension and retraction in a direction perpendicular to the travel direction of the RGV trolley. The transmission assembly includes a sprocket 303, a chain 304, and a drive shaft 305. A gear is mounted on the drive shaft 305 and rotates with it. The reduction motor Ⅲ 302 drives the gear on the drive shaft 305 to rotate via the sprocket 303 and the chain 304. The gear drives the rack 307 to move forward and backward, thereby driving the telescopic arm 308 to extend and retract. The telescopic mechanism 3 includes two bases 301 and two telescopic arms 308. The two bases 301 are arranged in parallel, and the two telescopic arms 308 are slidably connected to the two bases 301 respectively.

[0053] The anti-tipping mechanism 4 includes a base support 401, an L-shaped mounting plate 402, a balance bar 403, rollers 406, and roller bases 407. At the loading and unloading wheel blank position of the RGV trolley, the base support 401 is installed on the other side of the RGV trolley in the direction of the extension arm 308. That is, the base support 401 is fixedly installed on one side of the track at the receiving and unloading positions. The RGV trolley travels on the track. The L-shaped mounting plate 402 is fixedly connected to the base support 401. The balance bar 403 is installed via adjusting bolts 404 and nuts 405. On the L-shaped mounting plate 402, the vertical height of the balance bar 403 can be adjusted using adjusting bolts 404 and nuts 405. The roller base 407 is fixedly mounted on the base plate I1013, and the roller 406 is mounted on the roller base 407. When the roller base 407 follows the RGV trolley to the receiving and unloading stations, and the RGV trolley travels to the position of the base support 401, the roller 406 engages with the balance bar 403, meaning the roller 406 is located below the balance bar 403 and in rolling contact with it. When the RGV trolley loads or unloads wheel blanks, the roller 406 is positioned directly below the balance bar 403 to prevent the RGV trolley from tipping over.

[0054] The base support 401 and the balance bar 403 are fixedly installed at the loading (receiving) station and the unloading (discharging) station and do not move with the RGV trolley. However, the roller base 407 and the roller 406 are installed on the frame of the RGV trolley and move with the RGV trolley. When the RGV trolley moves to the loading (receiving) station or the unloading (discharging) station, the roller 406 moves with the RGV trolley to the bottom of the balance bar 403 and rolls in contact with the lower surface of the balance bar 403.

[0055] The RGV trolley used for transporting wheel blanks also includes a control unit. Gear motors I103, II203, and III302 are all electrically connected to the controller of the control unit, which can be a PLC, microcontroller, or similar device. All drive motors of the RGV trolley are variable frequency motors, capable of meeting the requirements of speed variations.

[0056] Based on the above-described RGV trolley for transporting wheel blanks, the present invention also provides a method for using the RGV trolley for transporting wheel blanks, the method comprising the following steps:

[0057] When the S1.RGV trolley is in standby mode, the lifting mechanism 2 is in the lowest position, the telescopic mechanism 3 telescopic arm is retracted to the zero position, and the trolley stops at the designated position.

[0058] S2. When the loading tray on the loading platform is full of sawn wheel blanks, the electronic control unit sends a signal to the RGV trolley. The RGV trolley moves to the set loading position, and the rollers of the anti-tipping mechanism 4 follow the RGV trolley to the bottom of the balance bar 403. The rollers roll in contact with the balance bar 403 to prevent the RGV trolley from tipping over.

[0059] Specifically, when the loading tray on the loading platform is full of sawn wheel blanks, the electronic control unit sends a signal to the RGV trolley. The traveling mechanism 1 drives the drive wheel 1053 on the drive wheel assembly 105 shaft 1051 to rotate via the geared motor Ⅰ103. The drive wheel 1053 drives the frame 101 to move, and the three driven wheels 1063 follow suit, thus driving the entire RGV trolley to travel on the guide rail. The guide wheel assembly 107 provides adaptive guidance during the RGV trolley's movement. When the RGV trolley reaches the set loading position, the geared motor Ⅰ103 stops working; the anti-tipping mechanism 4 roller 406 is then located directly below the balance bar 403, making rolling contact with the balance bar 403 to prevent the RGV trolley from tipping over. The base support 401 and the balance bar 403 are fixedly installed at the loading (receiving) station and do not move with the RGV trolley. However, the roller base 407 and the roller 406 are installed on the frame of the RGV trolley and move with the RGV trolley. When the RGV trolley moves to the loading (receiving) station, the roller 406 moves with the RGV trolley to directly below the balance bar 403 and rolls in contact with the lower surface of the balance bar 403.

[0060] S3. The telescopic mechanism 3 operates, so that the telescopic arm 308 is located directly below the loading tray containing the wheel blanks placed on the loading platform;

[0061] Specifically, the reduction motor Ⅲ302 of the telescopic mechanism 3 starts to work. The reduction motor Ⅲ302 drives the gear on the transmission shaft 305 to rotate through the sprocket 303 and chain 304. The gear drives the rack 307 forward, driving the telescopic arm 308 to extend to the set distance. The reduction motor Ⅲ302 stops working. At this time, the telescopic arm 308 is located directly below the loading tray containing the wheel blanks on the loading platform.

[0062] S4. The lifting mechanism 2 works, driving the telescopic mechanism to rise to the set height, so that the telescopic arm 308 lifts the loading tray containing the wheel blanks;

[0063] The specific operation is as follows: When the reduction motor II 203 of the lifting mechanism 2 receives the signal, it starts to work. The reduction motor II 203 drives the trapezoidal screw 205 to rotate through the coupling II 204. Then, the nut 206 of the trapezoidal screw 205 drives the connecting rod 207 to move backward along the guide rail 2091 of the linear guide pair 209, thereby driving the first support 2101 frame to move backward. The vertical angle between the first support 2101 and the second support 2102 of the scissor lifting assembly 210 decreases. When the lifting mechanism 2 rises to the set height, the telescopic arm 308 of the telescopic mechanism 3 lifts the loading tray containing the wheel blank to the set height, and the reduction motor II 203 stops working.

[0064] S5. The telescopic mechanism 3 retracts, causing the telescopic arm 308 carrying the wheel blank to retract to the zero position;

[0065] The specific operation is as follows: When the telescopic mechanism 3 receives the instruction, the reduction motor Ⅲ302 starts to work. The reduction motor Ⅲ302 drives the gear on the transmission shaft 305 to rotate through the sprocket 303 and the chain 304. The gear drives the rack 307 to move backward, thereby driving the telescopic arm 308 to retract to the zero position, and the reduction motor Ⅲ302 stops working.

[0066] S6. The lifting mechanism 2 returns to its lowest position, and the telescopic arm 308 carrying the wheel blank descends along with the lifting mechanism;

[0067] The specific operation is as follows: The reduction motor II 203 of the lifting mechanism 2 starts to work. The reduction motor II 203 drives the trapezoidal screw 205 to rotate through the coupling II 204. Then, the nut 206 of the trapezoidal screw 205 drives the connecting rod 207 to move forward along the guide rail 2091 of the linear guide pair 209, thereby driving the first support 2101 frame to move forward. The vertical angle between the first support 2101 and the second support 2102 of the scissor lifting assembly 210 increases until the lifting mechanism 2 descends to the lowest position, and the reduction motor II 203 stops working.

[0068] The S7.RGV trolley's traveling mechanism 1 is working. When the RGV trolley reaches the set unloading position, the RGV trolley stops moving.

[0069] The specific operation is as follows: When the RGV trolley traveling mechanism 1 receives a signal that it has reached the unloading position, it drives the drive wheel 1053 on the shaft I1051 of the drive wheel set 105 to rotate via the geared motor I103. The drive wheel 1053 drives the frame body 101 to move, and the three driven wheels 1063 follow the rotation, thereby driving the entire RGV trolley to travel on the guide rail. The guide wheel set 107 provides adaptive guidance during the movement of the RGV trolley. When the RGV trolley reaches the set unloading position, the geared motor I103 stops working; at this time, the anti-tipping mechanism 4 roller 406 is located directly below the balance bar 403 and makes rolling contact with the balance bar 403 to prevent the RGV trolley from tipping over. The base support 401 and the balance bar 403 are fixedly installed at the unloading (unloading) station and do not move with the RGV trolley. However, the roller base 407 and the roller 406 are installed on the frame of the RGV trolley and move with the RGV trolley. When the RGV trolley moves to the unloading (unloading) station, the roller 406 moves with the RGV trolley to directly below the balance bar 403 and rolls in contact with the lower surface of the balance bar 403.

[0070] S8. The lifting mechanism 2 works, driving the telescopic mechanism to rise, so that the telescopic arm 308 carrying the wheel blanks reaches the unloading height;

[0071] The specific operation is as follows: When the reduction motor II 203 of the lifting mechanism 2 receives the signal, it starts to work. The reduction motor II 203 drives the trapezoidal screw 205 to rotate through the coupling II 204. Then, the nut 206 of the trapezoidal screw 205 drives the connecting rod 207 to move backward along the guide rail 2091 of the linear guide pair 209, thereby driving the first support 2101 frame to move backward. The vertical angle between the first support 2101 and the second support 2102 of the scissor lifting assembly 210 decreases. When the lifting mechanism 2 rises to the set height, the telescopic arm 308 of the telescopic mechanism 3 lifts the loading tray containing the wheel blank to the set height, and the reduction motor II 203 stops working.

[0072] S9. The telescopic mechanism 3 is activated, and the telescopic arm 308 carrying the wheel blank extends, so that the wheel blank on the telescopic arm 308 reaches directly above the receiving position.

[0073] The specific operation is as follows: the reduction motor Ⅲ302 of the telescopic mechanism 3 starts to work. The reduction motor Ⅲ302 drives the gear on the transmission shaft 305 to rotate through the sprocket 303 and chain 304. The gear drives the rack 307 to move forward, driving the telescopic arm 308 to extend to the set distance. The reduction motor Ⅲ302 stops working. At this time, the telescopic arm 308 that lifts the loading plate of the wheel blank is located directly above the receiving position.

[0074] S10. The lifting mechanism 2 returns to the lowest position. During the descent of the lifting mechanism, the loading tray containing the wheel blank is transferred from the telescopic arm 308 to the support surface of the receiving position, and the loading tray containing the wheel blank is unloaded onto the loading tray containing the wheel blank.

[0075] The specific operation is as follows: The reduction motor II 203 of the lifting mechanism 2 starts to work. The reduction motor II 203 drives the trapezoidal screw 205 to rotate through the coupling II 204. Then, the nut 206 of the trapezoidal screw 205 drives the connecting rod 207 to move forward along the guide rail 2091 of the linear guide pair 209, thereby driving the first support 2101 frame to move forward. The vertical angle between the first support 2101 and the second support 2102 of the scissor lifting assembly 210 increases until the lifting mechanism 2 descends to the lowest position. The reduction motor II 203 stops working. During the descent of the lifting mechanism, the loading plate falls on the support surface of the receiving position to realize unloading.

[0076] S11. Telescopic mechanism 3 retracts, and telescopic arm 308 retracts to the zero position;

[0077] The specific operation is as follows: When the telescopic mechanism 3 receives the instruction, the reduction motor Ⅲ302 starts to work. The reduction motor Ⅲ302 drives the gear on the transmission shaft 305 to rotate through the sprocket 303 and the chain 304. The gear drives the rack 307 to move backward, thereby driving the telescopic arm 308 to retract to the zero position, and the reduction motor 302 stops working.

[0078] After receiving the signal that unloading is complete, the S12.RGV trolley traveling mechanism 1 drives the entire RGV trolley to travel along the guide rail to the designated position, and one work cycle ends.

[0079] The specific operation is as follows: After receiving the signal that the unloading is completed, the RGV trolley traveling mechanism 1 drives the drive wheel 1053 on the drive wheel set 105 shaft 1051 to rotate through the reduction motor Ⅰ103. The drive wheel 1053 drives the frame 101 to move, and the three driven wheels 1063 follow the rotation, thereby driving the entire RGV trolley to travel along the guide rail to the designated position, and one work cycle ends.

[0080] This invention relates to an RGV trolley for transporting wheel blanks, enabling intelligent transportation of wheel blanks between different designated stations. This RGV trolley not only automates the transportation of wheel blanks through intelligent upgrades to the warehousing and logistics processes from the unloading to the heating stages, but also ensures precise placement of the wheel blanks and facilitates information tracking throughout the transportation process. The entire device boasts a high degree of automation, high speed, good stability, low cost, simple operation and maintenance, and strong reliability. Furthermore, after the upgrade, manual operation of the overhead crane for wheel blank handling is eliminated, achieving the goal of reducing manpower and increasing efficiency.

[0081] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A RGV trolley for transporting wheel blanks, characterized in that: The utility model relates to a kind of RGV car, including walking mechanism (1), lifting mechanism (2), telescopic mechanism (3) and anti-rollover mechanism (4), the lifting mechanism (2) is installed on the frame (101) of walking mechanism (1), telescopic mechanism (3) is installed on the upper bottom plate (201) of lifting mechanism (2), telescopic mechanism (3) is in the direction perpendicular to the direction of RGV car travel, anti-rollover mechanism (4) is installed on the frame (101) side, located on the side of RGV car and the direction of telescopic mechanism (3) extension is opposite;The walking mechanism (1) includes frame (101), rotating shaft assembly (102), reduction motor I (103), drive wheel group (105) and driven wheel group (106), rotating shaft assembly (102) includes first rotating shaft (1021), first shaft sleeve (1022), second rotating shaft (1023), second shaft sleeve (1024), connecting plate (1027) and U-shaped mounting seat (1028), two rows of tapered roller bearings (1025) are embedded between first rotating shaft (1021) and first shaft sleeve (1022), between second rotating shaft (1023) and second shaft sleeve (1024), second rotating shaft (1023) is connected with U-shaped mounting seat (1028) below, one end of connecting plate (1027) is connected on the outer wall of second shaft sleeve (1024), the other end of connecting plate (1027) is connected below first rotating shaft (1021), first shaft sleeve (1022) is fixedly connected on L-shaped base plate (1012);The walking mechanism (1) further includes guide wheel group (107) and L-shaped mounting plate (1029), L-shaped mounting plate (1029) is arranged on the both sides of U-shaped mounting seat (1028), guide wheel group (107) is fixedly connected on L-shaped mounting plate (1029) through guide wheel shaft (1071) and is fixedly clamped on the both sides of guide rail, bearing is arranged between guide wheel (1072) and wheel shaft (1071);The lifting mechanism (2) includes upper bottom plate (201), lower bottom plate (202), reduction motor II (203), trapezoidal screw (205), trapezoidal nut (206), linear guide pair (209) and scissor lifting assembly (210), lower bottom plate (202) is fixedly installed on the frame (101), linear guide (2091) of linear guide pair (209) is installed on the upper surface of lower bottom plate (202), scissor lifting assembly (210) is arranged between upper bottom plate (201) and lower bottom plate (202), reduction motor II (203) is installed on the upper surface of lower bottom plate (202), the output shaft of reduction motor II (203) is connected with trapezoidal screw (205) through coupling II (204), trapezoidal nut (206) is fixedly installed on connecting rod (207).The anti-tilting mechanism (4) is fixedly installed on one side of the rail of the material receiving station and the blanking station. When the roller base (407) in the anti-tilting mechanism (4) runs to the material receiving station and the blanking station with the RGV trolley, the roller (406) installed on the roller base (407) and the balance bar (403) of the anti-tilting mechanism (4) form rolling contact, so as to prevent the RGV trolley from tilting.

2. The RGV trolley for transporting wheel blanks according to claim 1, characterized in that The frame (101) comprises a main frame (1011), an L-shaped base plate (1012) and a bottom plate I (1013), the L-shaped base plate (1012) is connected at the four corners of the main frame (1011), the bottom plate I (1013) is fixedly connected to the main frame (1011) on one side of the frame (101), the roller base (407) of the anti-rollover mechanism (4) is installed on the bottom plate I (1013), the rotation shaft assembly (102) is fixedly connected below the L-shaped base plate (1012), the reduction motor I (103) is installed on the U-shaped mounting seat (1028) of the rotation shaft assembly (102), the output shaft of the reduction motor I (103) is connected with the rotation shaft I (1051) of the driving wheel group (105) through the shaft coupling I (104), and the driving wheel group (105) and the driven wheel group (106) are connected with the corresponding rotation shaft assembly (102) respectively.

3. The RGV trolley for transporting wheel blanks according to claim 1 or 2, characterized in that: The scissor lifting assembly (210) comprises a first supporting frame (2101) and a second supporting frame (2102) which are arranged in cross, the first supporting frame (2101) and the second supporting frame (2102) are rotationally connected, the upper end portions of the first supporting frame (2101) and the second supporting frame (2102) are rotationally connected with the lower surface of the upper bottom plate (201), the lower end portion of the first supporting frame (2101) is rotationally connected with the guide rail sliding block (2092) of the linear guide rail pair (209) through the connecting rod (207), the guide rail sliding block (2092) is slidingly connected on the linear guide rail (2091), and the lower end portion of the second supporting frame (2102) is rotationally connected with the upper surface of the lower bottom plate (202).

4. The RGV trolley for transporting wheel blanks according to claim 1, characterized in that: The telescopic mechanism (3) comprises a base (301), a reduction motor III (302), a transmission assembly and a telescopic arm (308), the base (301) is fixedly installed on the upper bottom plate (202) of the lifting mechanism (2), the reduction motor III (302) is fixedly installed on the base (301), the telescopic arm (308) is slidingly connected on the base (301), the lower surface of the telescopic arm (308) is provided with a rack (307), the rack (307) is meshed with the gear of the transmission assembly, and the output shaft of the reduction motor III (302) is connected with the transmission assembly to drive the gear to rotate.

5. The RGV trolley for transporting wheel blanks as claimed in claim 2, characterized in that: The anti-rollover mechanism (4) comprises a base support (401), an L-shaped mounting plate (402), a balance bar (403), a roller (406) and a roller base (407), the base support (401) is fixedly installed on one side of the material receiving station and the material discharging station track, the RGV trolley walks on the track, the L-shaped mounting plate (402) is fixedly connected to the base support (401), the balance bar (403) is installed on the L-shaped mounting plate (402) through the adjusting bolt (404) and the nut (405), the roller base (407) is fixedly installed on the bottom plate I (1013), the roller (406) is installed on the roller base (407), when the roller base (407) runs to the material receiving station and the material discharging station along with the RGV trolley, the roller (406) is located below the balance bar (403) and is in rolling contact with the balance bar (403).

6. The RGV trolley for transporting wheel blanks as claimed in claim 1, characterized in that: The rotation shaft I (1051) of the driving wheel group (105) is rotatably installed on the two side walls of the U-shaped mounting seat (1028) through a bearing seat, and the rotation shaft II (1061) of the driven wheel group (106) is rotatably installed on the two side walls of the U-shaped mounting seat (1028) through a bearing seat. An installation bottom plate (1031) for installing a speed reducer I (103) is arranged on the inner side surface of the U-shaped mounting seat (1028) on which the driving wheel group (105) is installed. The speed reducer I (103) is fixedly installed on the installation bottom plate (1031), and the output shaft of the speed reducer I (103) is connected with the rotation shaft I (1051) of the driving wheel group (105) through a shaft coupling.

7. A method of using an RGV cart for transporting wheel blanks, characterized by: The use method of the RGV trolley for transporting wheel blanks according to any one of claims 1 to 6 comprises the following steps: S1. When the RGV trolley is in standby state, the lifting mechanism (2) is at the lowest position, the telescopic mechanism (3) is retracted to zero position, and the trolley is parked at the designated position; S2. When the loading tray placed on the loading table is filled with sawn wheel blanks, the electric control unit sends a signal to the RGV trolley, the RGV trolley moves to the set loading station, the rollers of the anti-tilting mechanism (4) are located directly below the balance bar (403) and rollingly contact the balance bar (403) to prevent the RGV trolley from tilting; S3. The telescopic mechanism (3) works, and the telescopic arm (308) is located directly below the loading tray loaded with wheel blanks on the loading table; S4. The lifting mechanism (2) works, and drives the telescopic mechanism to rise to the set height, so that the telescopic arm (308) holds up the loading tray loaded with wheel blanks; S5. The telescopic mechanism (3) is retracted, and the telescopic arm (308) loaded with wheel blanks is retracted to zero position; S6. The lifting mechanism (2) is lowered to the lowest position, and the telescopic arm (308) loaded with wheel blanks is lowered along with the lifting mechanism; S7. The walking mechanism (1) of the RGV trolley works, and the RGV trolley stops moving when it reaches the set unloading station; S8. The lifting mechanism (2) works, and drives the telescopic mechanism to rise, so that the telescopic arm (308) loaded with wheel blanks reaches the height during unloading; S9. The telescopic mechanism (3) works, the telescopic arm (308) loaded with wheel blanks is extended, and the wheel blanks on the telescopic arm (308) reach directly above the receiving position; S10. The lifting mechanism (2) is lowered to the lowest position, and in the process of lowering the lifting mechanism, the loading tray loaded with wheel blanks is transferred from the telescopic arm (308) to the support surface of the receiving position, and the loading tray loaded with wheel blanks is unloaded on the loading tray loaded with wheel blanks; S11. The telescopic mechanism (3) is retracted, and the telescopic arm (308) is retracted to zero position; S12. After receiving the signal that the unloading is completed, the walking mechanism (1) of the RGV trolley drives the entire RGV trolley to travel along the guide rail to the designated position, and a working cycle is completed.

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