Intelligent small rail car

Abstract

The invention relates to the technical field of machining, in particular to an intelligent small rail car. Comprising exchange telescopic frames, a lifting device and a trolley sliding plate, the lifting device is arranged on the surface of the trolley sliding plate, and at least two exchange telescopic frames are arranged at the top of the lifting device; at least one exchange telescopic frame is configured to be used for taking the workpieces in the target machining station back into the exchange telescopic frame, and at least the other exchange telescopic frame is configured to be used for transferring the workpieces in the exchange telescopic frame to the target machining station; the lifting device is configured to drive the exchange telescopic frame to do lifting motion; the trolley sliding plate is configured to be in sliding fit with the rail and can move on the rail in the first direction or the second direction, the first direction is opposite to the second direction, the intelligent rail trolley can achieve automatic and orderly circulation of workpieces between the feeding channel, the discharging channel and the machining stations, the automation degree of the production line is improved, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to an intelligent rail trolley. Background Art

[0002] In traditional workpiece production lines, existing technologies have significant limitations, especially in terms of the degree of automation. Existing production lines rely heavily on manual operation or simple mechanical auxiliary devices, resulting in an extremely low overall level of automation. The transportation of workpieces between different processing stations relies almost entirely on manual intervention, which is not only inefficient but also easily affected by human factors. For example, when transferring workpieces between processing stations, due to the lack of precise automated control, the workpieces may deviate, tip over, or even fall due to unstable transmission, increasing the risk of damage to the workpieces. Frequent loading and unloading operations further affect production efficiency and product quality.

[0003] In addition, in multi-process production lines, coordination and adaptability are obviously insufficient. The connection between different processing stations is not tight enough, which leads to obvious restrictions on the smoothness and consistency of the entire production process, thus affecting the overall production rhythm. This high dependence on manual labor makes enterprises face huge challenges in the pursuit of fully automated production lines, and it is impossible to achieve true unmanned operation, which seriously affects the promotion of modern and efficient production.

[0004] Therefore, there is an urgent need for a solution that can realize the automated and orderly flow of workpieces between various processing stations, so as to overcome the various limitations brought about by manual participation and truly realize the full automation of all production lines. Summary of the invention

[0005] In view of this, an embodiment of the present application provides an intelligent rail trolley that can realize the automated and orderly flow of workpieces between upper and lower material channels and various processing stations, thereby improving the degree of automation of the production line and improving processing efficiency.

[0006] An intelligent rail trolley provided in an embodiment of the present application comprises an exchange telescopic frame, a lifting device and a trolley slide, wherein the lifting device is arranged on the surface of the trolley slide, and at least two exchange telescopic frames are arranged on the top of the lifting device;

[0007] The exchange telescopic frame is configured such that at least one is used to retrieve a workpiece from a target processing station into the exchange telescopic frame, and at least another is used to transfer a workpiece in the exchange telescopic frame to the target processing station;

[0008] The lifting device is configured to drive the exchange telescopic frame to perform lifting and lowering movements;

[0009] The trolley slide is configured to be slidably matched with the track and can move on the track along a first direction or a second direction, wherein the first direction is opposite to the second direction.

[0010] In one embodiment, the lifting device includes an outer frame and a lifting assembly arranged on the outer frame and capable of lifting and lowering relative to the outer frame. The bottom of the outer frame is fixed to the surface of the trolley slide, and a sensor assembly is provided on the outer frame.

[0011] In one embodiment, the lifting assembly includes a lifting panel, a lifting motor, a first reducer, a bevel gearbox, a transmission shaft, a worm gear mechanism and a ball screw mechanism. The ball screw mechanism is fixed to the outer frame, the top end of the screw of the ball screw mechanism is connected to the lifting panel, the output end of the lifting motor is connected to the input end of the first reducer, the output end of the first reducer is connected to the input end of the bevel gearbox, the output end of the bevel gearbox is connected to one end of the transmission shaft, and the other end of the transmission shaft is connected to the input end of the worm gear mechanism, and the worm of the worm gear mechanism is engaged with the nut of the ball screw mechanism.

[0012] In one embodiment, the lifting assembly further includes a linear bearing and a guide shaft, the top of the guide shaft is fixedly connected to the lifting assembly, the bottom of the guide shaft is provided with a shaft baffle, the guide shaft is slidably disposed in the linear bearing, and the linear bearing is fixed to the outer frame.

[0013] In one embodiment, the sensing assembly includes at least one of a side limit switch, a bottom limit switch, and a trolley position detection switch;

[0014] The side limit switch is arranged on one side of the shaft baffle, the bottom limit switch is arranged below the shaft baffle, and the trolley position detection switch is arranged on the peripheral frame at a position corresponding to the track marking point;

[0015] The side limit switch is configured to be triggered by the shaft baffle and to send a lifting panel ascending and descending position signal and a speed control signal after being triggered;

[0016] The bottom limit switch is configured to be triggered by the shaft baffle and send a reference point arrival signal after being triggered;

[0017] The trolley position detection switch is configured to sense a track marking point and send a trolley position signal when triggered.

[0018] In one embodiment, the trolley skateboard includes a skateboard body, a travel drive motor, a second reducer and a driving gear. The travel drive motor and the second reducer are arranged on the surface of the skateboard body. The output end of the travel drive motor is connected to the input end of the second reducer. The output end of the second reducer passes through the skateboard body and is coaxially connected to the driving gear under the skateboard body. The driving gear is meshed with a rack arranged on the track along the length direction of the track.

[0019] In one embodiment, a slider mounting seat is provided on the lower surface of the skateboard body, and a trolley slider is installed on the lower surface of the slider mounting seat. The trolley slider is used to slide with a guide rail arranged on the track along the length direction of the track. A downwardly protruding positioning step is provided on the inner side of the lower surface of the slider mounting seat, and the positioning step is limitedly matched with the inner side surface of the slider along the width direction of the track.

[0020] In one embodiment, a lubrication gear is provided on one side of the driving gear, and the lubrication gear is meshed with the driving gear.

[0021] In one embodiment, the exchange telescopic frame includes an in-and-out material main support and an in-and-out material exchange support, the in-and-out material exchange support is slidably and telescopically arranged in the in-and-out material main support, main support rollers are arranged on both sides of the in-and-out material main support along the workpiece transmission direction, exchange support rollers are arranged on both sides of the in-and-out material exchange support along the workpiece transmission direction, and the exchange support rollers are transmission-connected with a drive assembly;

[0022] The main support roller conveyor is configured to move synchronously with the exchange support roller conveyor under the drive of the driving assembly to transfer the workpiece located on the main support roller conveyor and the exchange support roller conveyor;

[0023] The in-and-out material exchange bracket is configured to extend from the in-and-out material main bracket to achieve the transfer of the workpiece from the exchange telescopic bracket to the target processing station; and retract into the in-and-out material main bracket to achieve the transfer of the workpiece from the target processing station to the exchange telescopic bracket.

[0024] In one embodiment, a linear guide rail is provided at the bottom of the inlet and outlet exchange bracket along the telescopic direction, and the inlet and outlet main bracket is provided with an exchange bracket driving hydraulic cylinder for driving the inlet and outlet main bracket to extend or retract from the inlet and outlet main bracket below the inlet and outlet exchange bracket, and a guide rail slider that slides with the linear guide rail under the drive of the exchange bracket driving hydraulic cylinder;

[0025] The in-and-out material exchange bracket is provided with a workpiece pushing hydraulic cylinder between the rollers of the exchange bracket, and the piston end of the workpiece pushing hydraulic cylinder is provided with a workpiece locking assembly, and the workpiece locking assembly includes a planar rotating cylinder and a locking block connected to the planar rotating cylinder;

[0026] The locking block is configured to rotate to a first angle under the drive of the planar rotary cylinder to lock the workpiece, or to rotate to a second angle under the drive of the planar rotary cylinder to release the workpiece.

[0027] The intelligent rail trolley provided in the embodiment of the present application adopts an exchange telescopic frame with a double-station design, and the trolley slide cooperates with the track to realize the reciprocating motion of the trolley along the production line, and can complete the flow of workpieces between various stations. The intelligent rail trolley is provided with a lifting device, which can lift the workpiece according to the height of different stations, so as to facilitate smooth docking with the station and realize the picking and placing of the workpiece. The intelligent rail trolley can realize the automatic and orderly flow of workpieces between the upper and lower material channels and various processing stations, improve the automation level of the production line, and improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a structural schematic diagram of an intelligent rail vehicle provided by an embodiment of the present application;

[0030] Figure 2 This is a structural schematic diagram of an exchange telescopic frame provided in one embodiment of the present application;

[0031] Figure 3 This is a structural schematic diagram of a main material inlet and outlet bracket provided in an embodiment of the present application;

[0032] Figure 4 This is a structural schematic diagram of an inlet and outlet material exchange bracket provided in one embodiment of the present application;

[0033] Figure 5 yes Figure 4 A partial schematic diagram of

[0034] Figure 6 yes Figure 4 Side view of

[0035] Figure 7 It is a structural schematic diagram of a lifting device provided in one embodiment of the present application;

[0036] Figure 8 It is a structural schematic diagram of a lifting assembly provided in one embodiment of the present application;

[0037] Fig. 9 This is a structural schematic diagram of a trolley skateboard provided in one embodiment of the present application;

[0038] Fig.10 This is a structural schematic diagram of a lubricating gear provided by an embodiment of the present application;

[0039] Fig.11 This is a structural schematic diagram of a waist-shaped hole of a machine base provided in an embodiment of the present application;

[0040] In the figure: 7-exchange telescopic frame, 71-infeed and discharge main support, 711-main support roller, 7111-main support roller, 7112-main support sprocket, 712-exchange support driving hydraulic cylinder, 713-guide rail slider, 714-main support long axis roller, 715-main support fixing plate, 716-outer baffle, 717-rear end hydraulic buffer;

[0041] 72-infeed and outfeed exchange bracket, 721-exchange bracket roller, 7211-exchange bracket roller, 7212-exchange bracket sprocket, 722-drive assembly, 7221-drive motor, 7222-axle extension sprocket, 723-exchange bracket long axis roller, 7223-chain, 724-inner baffle, 725-linear guide, 726-workpiece ejection hydraulic cylinder, 727-plane rotary cylinder, 728-locking block, 729-front end hydraulic buffer, 730-exchange bracket fixing plate, 731-hydraulic cylinder interface;

[0042] 8-lifting device, 81-lifting assembly, 811-lifting panel, 812-lifting motor, 813-first reducer, 814-bevel gear box, 815-transmission shaft, 816-ball screw mechanism, 817-worm gear mechanism, 818-linear bearing, 819-guide shaft, 82-peripheral frame, 820-shaft baffle, 83-sensing assembly, 831-trolley position detection switch, 832-bottom limit switch, 833-side limit switch, 84-workpiece detection switch;

[0043] 9-trolley slide, 91-travel drive motor, 911-base waist hole, 92-second reducer, 93-slide plate body, 94-slider mounting seat, 941-positioning step, 95-drive gear, 96-motor seat tightening plate, 97-motor seat tightening bolt, 98-lubricating gear. DETAILED DESCRIPTION

[0044] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0045] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0046] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0047] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0048] like Figure 1 As shown, an intelligent rail trolley provided in an embodiment of the present application includes an exchange telescopic frame 7, a lifting device 8 and a trolley slide 9, the lifting device 8 is arranged on the surface of the trolley slide 9, and at least two exchange telescopic frames 7 are arranged on the top of the lifting device 8;

[0049] The exchange telescopic rack 7 is configured such that at least one is used to retrieve the workpiece of the target processing station into the exchange telescopic rack 7, and at least another is used to transfer the workpiece in the exchange telescopic rack 7 to the target processing station;

[0050] The lifting device 8 is configured to drive the exchange telescopic frame 7 to perform lifting and lowering movements;

[0051] The trolley slide plate 9 is configured to be slidably matched with the track and can move on the track along a first direction or a second direction, the first direction being opposite to the second direction.

[0052] In application, there are at least two exchange telescopic racks 7, and there may be more than two, for example, three or four can be set as needed. When two exchange telescopic racks 7 are set on the top of the lifting device 8, one is responsible for receiving the processed workpieces and bringing them back to the RGV trolley (i.e., the intelligent track trolley), and the other is responsible for sending the workpiece to be processed to the next processing station. The lifting device 8 can drive the entire exchange telescopic rack 7 to perform lifting and lowering movements so as to accurately dock processing equipment at different heights. Four L-shaped heavy-duty slider mounting seats 94 are provided at the bottom of the trolley slide 9. These sliders cooperate with the guide rails on the track to ensure that the trolley can move smoothly on the track in the first direction (forward) or the second direction (reverse), thereby realizing the transfer of workpieces between different processing stations.

[0053] The intelligent rail trolley of the embodiment of the present application adopts an exchange telescopic frame with a double-station design, and the trolley slide cooperates with the track to realize the reciprocating motion of the trolley along the production line, and can complete the flow of workpieces between various stations. The intelligent rail trolley is provided with a lifting device, which can lift the workpiece according to the height of different stations, so as to facilitate smooth docking with the station and realize the picking and placing of the workpiece. The intelligent rail trolley can realize the automatic and orderly flow of workpieces between the upper and lower material channels and various processing stations, which improves the automation level of the production line and improves the processing efficiency.

[0054] like Figure 2 As shown, in one embodiment, the exchange telescopic frame 7 includes an inlet and outlet main support 71 and an inlet and outlet exchange support 72, the inlet and outlet exchange support 72 is slidably and telescopically arranged in the inlet and outlet main support 71, main support rollers 711 are arranged on both sides of the inlet and outlet main support 71 along the workpiece transmission direction, exchange support rollers 721 are arranged on both sides of the inlet and outlet exchange support 72 along the workpiece transmission direction, and the exchange support rollers 721 are transmission-connected to a driving assembly 722;

[0055] The main support roller conveyor 711 is configured to move synchronously with the exchange support roller conveyor 721 under the drive of the driving assembly 722 to transfer the workpieces located on the main support roller conveyor 711 and the exchange support roller conveyor 721;

[0056] The in-and-out material exchange bracket 72 is configured to extend from the in-and-out material main bracket 71 to achieve the transfer of the workpiece from the exchange telescopic bracket to the target processing station; and retract into the in-and-out material main bracket 71 to achieve the transfer of the workpiece from the target processing station to the exchange telescopic bracket.

[0057] In application, the main inlet and outlet bracket 71 and the inlet and outlet exchange bracket 72 are made of high-strength steel and are precisely processed to ensure that the surface flatness and roughness meet the requirements. The power output of the drive component 722 is transmitted to the exchange bracket roller 721 through the chain transmission system, thereby driving the main bracket roller 711 to move synchronously. This synchronization mechanism is precisely controlled by the control system to ensure that the workpiece remains stable during the transmission process. The telescopic movement of the inlet and outlet exchange bracket 72 is driven by a hydraulic cylinder, and precise positioning and stable movement are achieved through linear guides and guide sliders.

[0058] In application, a main bracket fixing plate 715 for connecting to the RGV trolley is provided at the bottom of the inlet and outlet main bracket 71. An exchange bracket fixing plate 730 for connecting to the RGV trolley is provided at the bottom of the inlet and outlet exchange bracket 72.

[0059] In one embodiment, Figure 3 As shown, the main support roller conveyor 711 includes a main support roller 7111, a main support sprocket 7112 located outside the main support roller 7111, and a main support chain for transmitting and connecting adjacent main support sprockets 7112. The main support roller 7111 is coaxially connected to the main support sprocket 7112, and the main support rollers 7111 on both sides are coaxially connected through the main support long axis roller 714.

[0060] In application, the main support roller 7111 is made of wear-resistant material, and the outer diameter and width are optimized according to the actual workpiece size to ensure sufficient load-bearing capacity and operational stability. The main support sprocket 7112 is installed on the outside of the roller to form a closed transmission system with the main support chain. The rollers of each set of rollers are installed at equal distances and heights between the support baffles, and are equipped with double-row sprockets. Adjacent sprockets transmit kinetic energy through the chain, and the two sets of rollers are connected through the long-axis rollers. The chain is made of high-strength alloy steel with good tensile strength and corrosion resistance. The main support long-axis roller 714 connects the main support rollers 7111 on both sides coaxially to ensure that the rollers on both sides rotate synchronously to avoid offset or jamming caused by uneven force on one side. The mounting surface of the entire main support roller 711 is finely polished to ensure smoothness and fit when in contact with the workpiece, reducing wear and friction losses.

[0061] In application, the main support sprocket 7112 adopts a double-row sprocket structure, so that every two adjacent main support sprockets 7112 are connected by a main support chain transmission. For example, the first main support sprocket and the second main support sprocket are connected by a main support chain transmission, and the second main support sprocket and the third main support sprocket are connected by another main support chain transmission.

[0062] In one embodiment, Figure 4As shown, the exchange bracket roller conveyor 721 includes an exchange bracket roller 7211, an exchange bracket sprocket 7212 located on the inner side of the exchange bracket roller 7211, and an exchange bracket chain for transmitting and connecting adjacent exchange bracket sprockets 7212. The exchange bracket roller 7211 is coaxially connected with the exchange bracket sprocket 7212, and the exchange bracket rollers 7211 on both sides are coaxially connected through the exchange bracket long axis roller 723.

[0063] In application, the exchange bracket sprocket 7212 also adopts a double-row sprocket structure, so that every two adjacent exchange bracket sprockets 7212 are connected by an exchange bracket chain transmission. For example, the first exchange bracket sprocket and the second exchange bracket sprocket are connected by an exchange bracket chain transmission, and the second exchange bracket sprocket and the third exchange bracket sprocket are connected by another exchange bracket chain transmission.

[0064] In one embodiment, Figure 5 and 6 As shown, the driving assembly 722 includes a driving motor 7221, an axial extension sprocket 7222 and a chain 7223. The axial extension sprocket 7222 is coaxially fixedly connected to the motor shaft of the driving motor 7221, and the axial extension sprocket 7222 is transmission-connected to the exchange bracket sprocket 7212 through the chain 7223.

[0065] In application, the drive motor 7221 uses an efficient and energy-saving servo motor, which has the characteristics of fast response speed and high positioning accuracy, and is suitable for occasions of frequent start and stop and high-speed operation. An extension sprocket 7222 is installed on the motor shaft, and the sprocket is connected to the motor shaft through a keyway to ensure that the two rotate synchronously. The chain 7223 is made of high-strength alloy steel, which has good tensile strength and corrosion resistance, ensuring reliability and durability under long-term use. The drive component 722 is connected to the exchange bracket sprocket 7212 through the chain 7223, realizing efficient driving force transmission and ensuring precise control of the exchange bracket roller 721. The connection between the motor and the sprocket is also equipped with a protective cover to prevent external impurities from entering and affecting the transmission efficiency.

[0066] In one embodiment, a linear guide rail 725 is provided at the bottom of the inlet and outlet exchange bracket 72 along the telescopic direction, and the inlet and outlet main bracket 71 is provided with an exchange bracket driving hydraulic cylinder 712 below the inlet and outlet exchange bracket 72 for driving the inlet and outlet main bracket 71 to extend or retract into the inlet and outlet main bracket 71, and a guide rail slider 713 that slides with the linear guide rail 725 under the drive of the exchange bracket driving hydraulic cylinder 712.

[0067] In application, the linear guide 725 adopts a high-precision ball guide with the characteristics of high rigidity and low friction, ensuring the stability and accuracy of the in-and-out material exchange bracket 72 during the extension and retraction process. The guide slider 713 is installed at the bottom of the in-and-out material main bracket 71, and closely cooperates with the linear guide 725 to ensure gapless movement during the sliding process. The exchange bracket drive hydraulic cylinder 712 uses a high-performance hydraulic cylinder with the characteristics of large thrust and fast response, which can complete the extension and retraction of the in-and-out material exchange bracket 72 in a short time. The end of the piston rod of the hydraulic cylinder is fixedly connected to the guide slider 713 to ensure the effective transmission of the driving force. In addition, the hydraulic system can also be equipped with a pressure sensor and a limit switch to ensure the safety and reliability of the system.

[0068] In one embodiment, the inlet and outlet material exchange bracket 72 is used to extend out of the front end of the inlet and outlet material exchange bracket 72 and is provided with a front end oil pressure buffer 729 .

[0069] In application, the front hydraulic buffer 729 is installed at the front end of the feed-in and feed-out exchange bracket 72. It adopts a double-acting hydraulic buffer design with an adjustable damping coefficient, which can be adjusted according to different workpiece weights and speeds. The buffer is filled with high-quality hydraulic oil to ensure a stable buffering effect. The outer shell of the buffer is made of high-strength aluminum alloy material, which not only reduces the weight but also enhances the structural strength. The front hydraulic buffer 729 plays a buffering role when the feed-in and feed-out exchange bracket 72 is extended, effectively reducing the impact force and protecting the equipment and workpieces from damage. Especially in the case of high-speed operation or emergency stop, it can significantly reduce the possibility of accidents and ensure the long-term reliable operation of the system.

[0070] In one embodiment, a rear end hydraulic buffer 717 is provided at a corresponding position of the rear ends of the inlet and outlet main bracket 71 and the inlet and outlet exchange bracket 72 .

[0071] In application, the rear hydraulic buffer 717 is installed at the corresponding position of the rear end of the inlet and outlet main bracket 71 and the inlet and outlet exchange bracket 72. The rear hydraulic buffer 717 plays a buffering role when the inlet and outlet exchange bracket 72 is retracted, preventing the strong impact caused by sudden stop and protecting the integrity of the equipment structure. Especially in the case of frequent operation, it can significantly extend the service life of the equipment and ensure the long-term reliable operation of the system.

[0072] In one embodiment, a workpiece pushing hydraulic cylinder 726 is provided between the inlet and outlet material exchange bracket 72 and the exchange bracket roller 721 , and a workpiece locking assembly is provided at the piston end of the workpiece pushing hydraulic cylinder 726 .

[0073] In application, the workpiece ejection hydraulic cylinder 726 is installed inside the in-and-out material exchange bracket 72, and its piston rod is connected to the hydraulic cylinder interface 731 at the bottom of the in-and-out material exchange bracket 72. The position close to the exchange bracket roller 721 ensures the accuracy and strength of the workpiece ejection. The hydraulic cylinder uses a high-performance hydraulic cylinder with the characteristics of large thrust and fast response, and can complete the workpiece ejection action in a short time. A workpiece locking assembly is installed at the end of the piston rod of the hydraulic cylinder, which includes a plane rotating cylinder 727 and a locking block 728. When the hydraulic cylinder piston rod is extended, the locking block 728 is driven by the plane rotating cylinder 727 to rotate to the first angle to lock the workpiece; when the hydraulic cylinder piston rod is retracted, the locking block 728 rotates to the second angle to release the workpiece. This design not only improves the reliability of workpiece fixation, but also simplifies the operation process, reduces manual intervention, and improves work efficiency.

[0074] In one embodiment, the workpiece locking assembly includes a planar rotary cylinder 727 and a locking block 728 connected to the planar rotary cylinder 727;

[0075] The locking block 728 is configured to rotate to a first angle under the drive of the planar rotating cylinder 727 to lock the workpiece, or to rotate to a second angle under the drive of the planar rotating cylinder 727 to release the workpiece.

[0076] In one embodiment, the inlet and outlet material exchange bracket 72 is provided with an inner baffle plate 724 on the inner side of the exchange bracket roller conveyor 721, and the top surface is higher than the surface of the exchange bracket roller conveyor 721. The inlet and outlet material main bracket 71 is provided with an outer baffle plate 716 on the outer side of the main bracket roller conveyor 711, and the workpiece is confined between the inner baffle plate 724 and the outer baffle plate 716.

[0077] In application, the inner baffle 724 and the outer baffle 716 are respectively installed at the corresponding positions of the inlet and outlet exchange bracket 72 and the inlet and outlet main bracket 71. They are made of high-strength steel and the surface is rust-proofed to ensure durability for long-term use. The height of the inner baffle 724 is slightly higher than the surface of the exchange bracket roller 721, while the height of the outer baffle 716 is slightly higher than the surface of the main bracket roller 711, forming a closed space, which effectively prevents the workpiece from sliding or tipping laterally during the transmission process. The top edge of the baffle is rounded to avoid scratching the workpiece surface. The limited space formed by the inner baffle 724 and the outer baffle 716 ensures the stable transmission and guidance of the workpiece.

[0078] In one embodiment, Figure 7 As shown, the lifting device 8 includes an outer frame 82 and a lifting component 81 arranged on the outer frame 82 and capable of lifting and lowering relative to the outer frame 82. The bottom of the outer frame 82 is fixed to the surface of the trolley slide 9, and a sensor component 83 is provided on the outer frame 82.

[0079] In use, the lifting device 8 is composed of an outer frame 82 and a lifting assembly 81 that can perform lifting and lowering movements relative to the outer frame. The outer frame 82 is fixed to the surface of the trolley skateboard 9 by bolts, providing a solid foundation for the lifting assembly. The outer frame 82 is welded from high-quality hollow square steel profiles and thick steel plates. The use of high-strength steel ensures that the frame has sufficient rigidity and load-bearing capacity while reducing the overall weight. Precision welding technology is used during the welding process to ensure the strength and flatness of the joints and avoid stress concentration points. The outer frame 82 is an overall rectangular structure, and the four corners are reinforced with ribs to enhance the overall stability and deformation resistance of the structure. Partitions are provided inside the frame to support and fix the various components of the lifting assembly 81, such as motors, reducers, worm gear mechanisms, etc.

[0080] In one embodiment, Figure 8 As shown, the lifting assembly 81 includes a lifting panel 811, a lifting motor 812, a first reducer 813, a bevel gear box 814, a transmission shaft 815, a worm gear mechanism 817 and a ball screw mechanism 816. The ball screw mechanism 816 is fixed to the outer frame 82. The top end of the screw of the ball screw mechanism 816 is connected to the lifting panel 811, the output end of the lifting motor 812 is connected to the input end of the first reducer 813, the output end of the first reducer 813 is connected to the input end of the bevel gear box 814, the output end of the bevel gear box 814 is connected to one end of the transmission shaft 815, the other end of the transmission shaft 815 is connected to the input end of the worm gear mechanism 817, and the worm of the worm gear mechanism 817 is engaged with the nut of the ball screw mechanism 816.

[0081] In application, the lifting motor 812 is mounted on the outer frame 82, and its output end is connected to the input end of the first reducer 813 to reduce the rotation speed and increase the torque. The output end of the first reducer 813 is connected to the input end of the bevel gearbox 814, and the bevel gearbox 814 changes the power transmission direction so that the originally vertical power output becomes horizontal. The output end of the bevel gearbox 814 is connected to one end of the transmission shaft 815, and the other end of the transmission shaft 815 is connected to the input end of the worm gear mechanism 817. The worm inside the worm gear mechanism 817 is engaged with the nut of the ball screw mechanism 816. When the worm rotates, the screw in the ball screw mechanism 816 is driven to rotate. The ball screw mechanism 816 is fixed on the outer frame 82, and the top end of its screw is connected to the lifting panel 811. As the screw rotates, the lifting panel 811 can be raised and lowered.

[0082] In one embodiment, the lifting assembly 81 also includes a linear bearing 818 and a guide shaft 819. The top of the guide shaft 819 is fixedly connected to the lifting assembly 81. The bottom of the guide shaft 819 is provided with an axis baffle 820. The guide shaft 819 is slidably set in the linear bearing 818, and the linear bearing 818 is fixed to the outer frame 82.

[0083] In application, in order to ensure the stability and accuracy of the lifting process, guide shafts 819 are installed at the four corners of the lifting panel 811, and these guide shafts are slidably set in linear bearings 818, and linear bearings 818 are fixed on the peripheral frame 82. A shaft baffle 820 is provided at the bottom of the guide shaft 819, which is used as a mechanical limit and also as a trigger element of the side limit switch 833 and the bottom limit switch 832 to detect the position of the lifting panel 811 and send corresponding signals to the control system.

[0084] In one embodiment, the sensor assembly 83 includes at least one of a side limit switch 833, a bottom limit switch 832, and a trolley position detection switch 831;

[0085] The side limit switch 833 is arranged on one side of the shaft stopper 820, the bottom limit switch 832 is arranged below the shaft stopper 820, and the trolley position detection switch 831 is arranged on the peripheral frame 82 at a position corresponding to the track marking point;

[0086] The side limit switch 833 is configured to be triggered by the shaft stopper 820 and send the lifting panel 811 rising and falling position signals and speed control signals after being triggered;

[0087] The bottom limit switch 832 is configured to be triggered by the shaft stopper 820 and send a reference point arrival signal after being triggered;

[0088] The trolley position detection switch 831 is configured to sense track marking points and send a trolley position signal when triggered.

[0089] In application, when the lifting panel 811 is located at the corresponding position of the side limit switch 833, the connection with the side limit switch 833 is realized through the contact point. At this time, the shaft baffle 820 will trigger the side limit switch 833, thereby sending the lifting panel 811 rising and falling position signals and speed control signals after triggering. When the lifting panel 811 is completely lowered to the lowest position, the shaft baffle 820 will trigger the bottom limit switch 832. At this time, the system receives the confirmation information of "reaching the reference point", and can perform the next operation or reset to prepare for the next lifting cycle. The trolley position detection switch 831 senses specific marking points on the RGV track through a non-contact sensing method (such as a photoelectric sensor or a magnetic sensor), and sends the current trolley position signal to the central control system after being triggered. This allows the RGV trolley to accurately locate each processing station on the preset path to ensure that the workpiece can be loaded and unloaded and processed in the correct position. At the same time, the trolley position detection switch 831 can also work in conjunction with other control systems to achieve real-time monitoring and optimized scheduling of the entire production line, further improving production efficiency and product quality.

[0090] In application, a workpiece detection switch 84 is also provided on the lifting panel 811 for detecting the workpiece on the exchange telescopic frame 7 .

[0091] The embodiment of the present application not only provides a powerful driving force and a smooth and reliable lifting function, but also realizes high-efficiency conversion and high-precision positioning through a multi-stage transmission system. At the same time, the application of built-in sensors enhances the self-protection ability and reliability of the system, simplifies maintenance procedures, and reduces long-term operating costs. The modular design is also easy to integrate with other automation systems, promoting the intelligent upgrade of the entire production line.

[0092] In one embodiment, Fig. 9 As shown, the trolley skateboard 9 includes a skateboard body 93, a travel drive motor 91, a second reducer 92 and a driving gear 95. The travel drive motor 91 and the second reducer 92 are arranged on the surface of the skateboard body 93. The output end of the travel drive motor 91 is connected to the input end of the second reducer 92. The output end of the second reducer 92 passes through the skateboard body 93 and is coaxially connected to the driving gear 95 under the skateboard body 93. The driving gear 95 is meshed with a rack arranged on the track along the length direction of the track.

[0093] In application, the skateboard body 93 is made of high-strength steel, has sufficient rigidity and load-bearing capacity, and in order to reduce weight, reasonable structural optimization is adopted in the design. Four L-shaped heavy-duty slider mounting seats 94 are provided on the lower surface of the skateboard body 93, and a trolley slider is installed on the lower surface of each mounting seat. These sliders cooperate with the two parallel heavy-duty linear guides on the RGV track to ensure the smooth sliding of the RGV trolley on the track.

[0094] In one embodiment, a slider mounting seat 94 is provided on the lower surface of the skateboard body 93, and a trolley slider is installed on the lower surface of the slider mounting seat 94. The trolley slider is used to slide with a guide rail arranged on the track along the length direction of the track. A downwardly protruding positioning step 941 is provided on the inner side of the lower surface of the slider mounting seat 94, and the positioning step 941 is limitedly matched with the inner side surface of the slider along the width direction of the track.

[0095] In application, a downwardly protruding positioning step 941 is provided on the inner side of the lower surface of the slider mounting seat 94, so that the inner side of the slider can limit the RGV trolley in the width direction of the track, which is used to offset the force toward the outside of the track generated by the interaction between the rack and the drive gear of the track.

[0096] In one embodiment, Fig.10 As shown, a lubrication gear 98 is provided on one side of the driving gear 95 , and the lubrication gear 98 is meshed with the driving gear 95 .

[0097] In application, in order to ensure the long-term stable operation of the driving system, a lubrication gear 98 is configured on one side of the driving gear 95, and the two are kept in meshing to provide continuous lubrication for the driving gear 95, reduce wear and extend the service life.

[0098] In one embodiment, Fig.11 As shown, the travel drive motor 91 is installed at one corner of the trolley slide 9, and two waist-shaped holes 911 are respectively provided on both sides of the motor base, which are used to adjust the position of the travel drive motor 91 when the travel drive motor 91 is installed, so that the driving gear 95 of the travel drive motor 91 can mesh with the rack on the track. After the motor base is installed in place and meshed with the rack, it is tightened by the motor base tightening plate 96 and pre-tightened by the motor base tightening bolts 97.

[0099] The working principle of this device is as follows:

[0100] When the workpiece is transferred to the set position on the exchange telescopic frame of the RGV trolley along with the workpiece circulation exchange workbench, the plane rotary cylinder 727 is actuated to make the locking block 728 at the front end engage in the feeding and unloading handle of the workpiece circulation exchange workbench to ensure that the workpiece is firmly fixed. Subsequently, the RGV trolley carries the workpiece to the loading point of a certain process on the processing line. In this process, the travel drive motor 91 drives the drive gear 95 to engage with the track rack through the second reducer 92 to achieve smooth travel of the trolley. After reaching the specified position, the lifting motor 812 in the lifting assembly 81 is started, and the power output direction is changed through the first reducer 813 and the bevel gear box 814, and is transmitted to the worm gear mechanism 817 through the transmission shaft 815, and finally drives the ball screw mechanism 816 to rotate, so that the screw moves up and down, and then pushes the lifting panel 811 to rise to an appropriate height to dock with the target processing station. At the same time, the exchange bracket driving hydraulic cylinder 712 and the driving motor 7221 cooperate to push out the in-and-out exchange bracket 72 and the workpiece circulation exchange worktable, and move them to the rapid positioning clamping fixture in the equipment processing area. When the in-and-out exchange bracket 72 is pushed into place, the workpiece pushing hydraulic cylinder 726 at its upper end starts to move, pushing out the workpiece circulation exchange worktable for a second time, so that the workpiece enters the rapid positioning clamping fixture in the equipment processing area, and completes precise positioning. Then, the plane rotating cylinder 727 rotates again, so that the locking block 728 releases the feeding and unloading handle of the workpiece circulation exchange worktable, allowing the exchange telescopic rack to reset and prepare to receive the next workpiece. When the above-mentioned mechanism is taking materials, the relevant actions are inverted: that is, when it is necessary to take out the processed workpiece from the processing area, the planar rotating cylinder 727 is first actuated to make the locking block 728 re-engage the feeding and taking handle of the workpiece circulation exchange worktable, and the exchange bracket driving hydraulic cylinder 712 and the driving motor 7221 cooperate to pull the workpiece circulation exchange worktable and the in-and-out material exchange bracket 72 back to the exchange telescopic bracket, and finally the planar rotating cylinder 727 rotates again to release the feeding and taking handle, completing a complete workpiece transmission cycle.

[0101] During the whole process, the workpiece detection switch 84 and the sensor assembly 83 (including the side limit switch 833, the bottom limit switch 832 and the trolley position detection switch 831) monitor the position and status of the RGV trolley in real time and provide feedback to the central control system CCS to ensure that each action can be executed accurately, thereby improving the automation level and reliability of the system.

[0102] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An intelligent rail trolley, characterized in that: It comprises an exchange telescopic frame (7), a lifting device (8) and a trolley slide (9), wherein the lifting device (8) is arranged on the surface of the trolley slide (9), and at least two exchange telescopic frames (7) are arranged on the top of the lifting device (8); The exchange telescopic frame (7) is configured to have at least one for retrieving a workpiece from a target processing station into the exchange telescopic frame (7), and at least one for transferring the workpiece in the exchange telescopic frame (7) to the target processing station; The lifting device (8) is configured to drive the exchange telescopic frame (7) to perform lifting movement; The trolley slide plate (9) is configured to be slidably matched with the track and can move on the track in a first direction or a second direction, wherein the first direction is opposite to the second direction.

2. The intelligent rail vehicle according to claim 1, characterized in that: The lifting device (8) comprises an outer frame (82) and a lifting component (81) which is arranged on the outer frame (82) and can perform lifting and lowering movements relative to the outer frame (82); the bottom of the outer frame (82) is fixed to the surface of the trolley slide (9); and a sensor component (83) is provided on the outer frame (82).

3. The intelligent rail vehicle according to claim 2, characterized in that: The lifting assembly (81) comprises a lifting panel (811), a lifting motor (812), a first reducer (813), a bevel gear box (814), a transmission shaft (815), a worm gear mechanism (817) and a ball screw mechanism (816), wherein the ball screw mechanism (816) is fixedly mounted on the outer frame (82), the top end of the screw of the ball screw mechanism (816) is connected to the lifting panel (811), the output of the lifting motor (812) is connected to the transmission shaft (815), and the transmission shaft (815) is connected to the transmission shaft (816). The output end is connected to the input end of the first reducer (813), the output end of the first reducer (813) is connected to the input end of the bevel gear box (814), the output end of the bevel gear box (814) is connected to one end of the transmission shaft (815), the other end of the transmission shaft (815) is connected to the input end of the worm gear mechanism (817), and the worm of the worm gear mechanism (817) is meshed with the nut of the ball screw mechanism (816).

4. The intelligent rail vehicle according to claim 2, characterized in that: The lifting assembly (81) also includes a linear bearing (818) and a guide shaft (819), the top of the guide shaft (819) is fixedly connected to the lifting assembly (81), the bottom of the guide shaft (819) is provided with a shaft baffle (820), the guide shaft (819) is slidably disposed in the linear bearing (818), and the linear bearing (818) is fixed to the outer frame (82).

5. The intelligent rail vehicle according to claim 4, characterized in that: The sensor assembly (83) includes at least one of a side limit switch (833), a bottom limit switch (832), and a trolley position detection switch (831); The side limit switch (833) is arranged on one side of the shaft baffle (820), the bottom limit switch (832) is arranged below the shaft baffle (820), and the trolley position detection switch (831) is arranged on the peripheral frame (82) at a position corresponding to a track marking point; The side limit switch (833) is configured to be triggered by the shaft baffle (820), and after being triggered, sends a rising and falling position signal and a speed control signal of the lifting panel (811); The bottom limit switch (832) is configured to be triggered by the shaft stopper (820) and to send a reference point arrival signal after being triggered; The trolley position detection switch (831) is configured to sense a track marking point and send a trolley position signal after being triggered.

6. The intelligent rail vehicle according to claim 1, characterized in that: The trolley skateboard (9) comprises a skateboard body (93), a travel drive motor (91), a second reducer (92) and a driving gear (95); the travel drive motor (91) and the second reducer (92) are arranged on the surface of the skateboard body (93); the output end of the travel drive motor (91) is connected to the input end of the second reducer (92); the output end of the second reducer (92) passes through the skateboard body (93) and is coaxially connected to the driving gear (95) below the skateboard body (93); the driving gear (95) is meshed with a rack arranged on the track along the length direction of the track.

7. The intelligent rail vehicle according to claim 6, characterized in that: A slider mounting seat (94) is provided on the lower surface of the slide plate body (93), a trolley slider is installed on the lower surface of the slider mounting seat (94), and the trolley slider is used to slide with a guide rail arranged on the track along the length direction of the track. A downwardly protruding positioning step (941) is provided on the inner side of the lower surface of the slider mounting seat (94), and the positioning step (941) is limitedly matched with the inner side surface of the slider along the width direction of the track.

8. The intelligent rail vehicle according to claim 6, characterized in that: A lubrication gear (98) is provided on one side of the driving gear (95), and the lubrication gear (98) is meshed with the driving gear (95).

9. The intelligent rail vehicle according to claim 1, characterized in that: The exchange telescopic frame comprises an inlet and outlet main support (71) and an inlet and outlet exchange support (72); the inlet and outlet exchange support (72) is slidably and telescopically arranged in the inlet and outlet main support (71); main support rollers (711) are arranged on both sides of the inlet and outlet main support (71) along the workpiece transmission direction; exchange support rollers (721) are arranged on both sides of the inlet and outlet exchange support (72) along the workpiece transmission direction; and the exchange support rollers (721) are transmission-connected to a driving assembly (722); The main support roller conveyor (711) is configured to follow the exchange support roller conveyor (721) to move synchronously under the drive of the driving component (722) so as to transfer the workpiece located on the main support roller conveyor (711) and the exchange support roller conveyor (721); The in-and-out material exchange bracket (72) is configured to extend from the in-and-out material main bracket (71) to achieve the transfer of the workpiece from the exchange telescopic bracket to the target processing station; and retract into the in-and-out material main bracket (71) to achieve the transfer of the workpiece from the target processing station to the exchange telescopic bracket.

10. The intelligent rail vehicle according to claim 9, characterized in that: A linear guide rail (725) is provided at the bottom of the inlet and outlet exchange bracket (72) along the telescopic direction, and the inlet and outlet main bracket (71) is provided with an exchange bracket driving hydraulic cylinder (712) below the inlet and outlet exchange bracket (72) for driving the inlet and outlet main bracket (71) to extend or retract from the inlet and outlet main bracket (71), and a guide rail slider (713) that is slidably matched with the linear guide rail (725) under the drive of the exchange bracket driving hydraulic cylinder (712); The in-and-out material exchange bracket (72) is provided with a workpiece pushing hydraulic cylinder (726) between the exchange bracket rollers (721), and a workpiece locking assembly is provided at the piston end of the workpiece pushing hydraulic cylinder (726), and the workpiece locking assembly includes a planar rotating cylinder (727) and a locking block (728) connected to the planar rotating cylinder (727); The locking block (728) is configured to rotate to a first angle under the drive of the planar rotating cylinder (727) to lock the workpiece, or to rotate to a second angle under the drive of the planar rotating cylinder (727) to release the workpiece.

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