A positioning structure for palletized cargo transfer

Abstract

This application relates to a positioning structure for palletized cargo transfer, belonging to the technical field of palletized cargo transportation. It includes a floating assembly for agitating the pallet and a closing assembly for interrupting the buoyancy. Two sets of both the floating and closing assemblies are provided, each corresponding to a push cylinder. The floating assembly includes an air duct and an air pump. The piston rod of the push cylinder is hollow and connected to the top surface of a positioning plate. The air duct slides through the end of the push cylinder away from the piston rod and is connected to the piston rod. The air pump is fixed to a support frame and connected via a pipe to the end of the air duct located outside the push cylinder. The closing assembly is located on the piston rod of the push cylinder and is used to close the piston rod of the push cylinder after the positioning pin is inserted into the positioning hole. This application has the effect of reducing wear on the positioning hole and positioning pin during the positioning process.

Description

Technical Field

[0001] This application relates to the technical field of palletized cargo transportation, and in particular to a positioning structure for palletized cargo transfer. Background Technology

[0002] In warehousing and logistics, stacker cranes are typically used to place goods onto shelves via pallets. During the process of moving goods from pallets to shelves, robotic arms are needed to pick up and place them. When picking up and placing goods, the pallets need to be accurately positioned on the stacker crane's transfer device 1.

[0003] Reference Figure 1 The existing stacker crane's transfer device 1 transfers pallets via a synchronous belt conveyor 12 mounted on a support frame 11. Before pallet transfer, the transfer device 1 performs preliminary and precise positioning of the pallet. Preliminary positioning is achieved by two positioning strips 13 with their inclined surfaces close to each other. Precise positioning is achieved by two pushing cylinders 14 pushing a positioning plate 15 closer to the pallet, causing two positioning holes 151 on the positioning plate 15 to fit into positioning posts on the bottom surface of the pallet. The bottom end of the positioning post is conical. During pallet transfer, two guide strips 16 on the support frame 11 guide and position the pallet in the transfer direction, facilitating accurate positioning during pallet transfer.

[0004] The positioning post is guided by its conical bottom end, making it easy to fit the positioning hole 151 onto the positioning post. Due to the weight of the goods and pallet, the side wall of the positioning hole 151 will wear against the positioning post during the fitting process, thereby reducing the positioning accuracy of the positioning hole 151. Summary of the Invention

[0005] To reduce wear on the positioning holes and positioning pins during the positioning process, this application provides a positioning structure for palletized cargo transfer.

[0006] The positioning structure for palletized cargo transfer provided in this application adopts the following technical solution: A positioning structure for palletized cargo transfer includes a floating assembly for blowing the pallet and a closing assembly for interrupting the buoyancy. Two sets of both the floating assembly and the closing assembly are provided, each corresponding to a push cylinder. The floating assembly includes a duct and a pump. The piston rod of the push cylinder is hollow and connected to the top surface of a positioning plate. The duct slides through the end of the push cylinder away from the piston rod and is connected to the piston rod. The pump is fixed to a support frame and connected via a pipe to the end of the duct located outside the push cylinder. The closing assembly is located on the piston rod of the push cylinder and is used to close the piston rod of the push cylinder after the positioning pin is inserted into the positioning hole.

[0007] By adopting the above technical solution, the hydraulic cylinder pushes the positioning plate closer to the pallet. Air is blown into the air duct by the air pump, and the air duct guides the air into the piston rod of the hydraulic cylinder. The air blown from the piston rod of the hydraulic cylinder onto the pallet, and as the positioning plate approaches the pallet, the air force causes the pallet and goods to be subjected to an upward buoyancy, reducing the force exerted by the pallet and goods on the positioning plate. Thus, during the process of inserting the positioning post into the positioning hole, the buoyancy of the air force makes it easier for the positioning post to slide into the positioning hole, reducing the wear caused to the positioning hole by the positioning post during the insertion process.

[0008] Once the positioning pin is inserted into the positioning hole, the sealing assembly closes the piston rod of the push cylinder, interrupting the buoyancy of the pallet caused by the wind. This makes it easier for the positioning pin to be inserted into the positioning hole, thus reducing the impact of the wind on the positioning pin's sliding into the positioning hole. This reduces the wear caused by the wind when the positioning pin slides in the positioning hole. Furthermore, the buoyancy of the pallet caused by the wind and the timely interruption of the wind make it easier for the positioning pin to position the pallet in the positioning hole, and also reduces the wear of the positioning hole during the positioning process.

[0009] Optionally, the sealing component also corresponds one-to-one with the positioning hole. The sealing component includes a driving cylinder and a sealing cylinder. A clearance groove is provided on the side wall of the positioning hole. The driving cylinder is fixedly connected to the clearance groove, and its movable end faces the opening of the clearance groove. The movable end of the driving cylinder is normally in the extended state and is fixedly connected to a push plate. The push plate is inclined along the insertion direction of the positioning post. The sealing cylinder is fixedly connected to the piston rod of the pushing cylinder, and its end away from the movable end is connected to the end of the driving cylinder away from the movable end through a pipeline. Hydraulic oil flows through the sealing cylinder and the pushing cylinder. The movable end of the sealing cylinder slides into the piston rod of the pushing cylinder and is used to seal the piston rod of the pushing cylinder.

[0010] By adopting the above technical solution, when the positioning pin slides into the positioning hole, the positioning pin pushes the inclined push plate to slide through the conical bottom end. The push plate drives the moving end of the drive cylinder to retract, and the moving end of the drive cylinder squeezes the hydraulic oil into the closed cylinder. The hydraulic oil pushes the moving end of the closed cylinder to extend, and the moving end of the closed cylinder causes the piston rod of the push cylinder to close, so that the piston rod of the push cylinder can automatically close after the positioning pin slides into the positioning hole.

[0011] Optionally, a closing spring is provided inside the drive cylinder near the movable end. The two ends of the closing spring are fixedly connected to the drive cylinder and the movable end of the drive cylinder, respectively. The closing spring is used to drive the movable end of the drive cylinder to return to the extended state.

[0012] By adopting the above technical solution, the hydraulic cylinder drives the positioning plate to reset, so that the positioning hole on the positioning plate is far away from the positioning post. When the positioning post slides out of the positioning hole, the closing spring uses its elasticity to restore the movable end of the driving hydraulic cylinder to the extended state. The driving hydraulic cylinder uses negative pressure to draw hydraulic oil from the closed hydraulic cylinder into its own interior, causing the movable end of the closed hydraulic cylinder to contract. Thus, after the positioning post slides out of the positioning hole, the closed hydraulic cylinder can automatically open to push the piston rod of the hydraulic cylinder.

[0013] Optionally, a positioning cylinder for positioning goods on a pallet is fixedly installed on the positioning bar. The positioning cylinder corresponds one-to-one with the pushing cylinder. The movable end of the positioning cylinder is used to face the goods on the pallet, and the end away from the movable end is connected to the end of the pushing cylinder near the movable end through a pipeline. Hydraulic oil also flows between the positioning cylinder and the pushing cylinder.

[0014] By adopting the above technical solution, when the hydraulic cylinder is pushed out, the moving end of the hydraulic cylinder causes its own hydraulic oil to flow into the positioning cylinder. The hydraulic oil causes the moving end of the positioning cylinder to extend. The two positioning cylinders extend synchronously to position the goods on the pallet, making it easy to position the goods and the pallet synchronously.

[0015] Optionally, a positioning spring is provided inside the positioning cylinder near the movable end. The two ends of the positioning spring are fixedly connected to the positioning cylinder and the movable end of the positioning cylinder, respectively. The positioning spring is used to drive the movable end of the positioning cylinder to retract. Two push cylinders are connected to a pump. The inlet of the pump is connected to an oil tank for storing hydraulic oil. The outlet of the pump is connected to two first oil pipes through a pipeline. The ends of the two first oil pipes away from the pump are respectively connected to the ends of the two push cylinders away from the movable end. A first electrically controlled valve is provided on the first oil pipe. The oil tank is connected to two second oil pipes. The ends of the two second oil pipes away from the oil tank are respectively connected to the ends of the two push cylinders away from the movable end. A second electrically controlled valve is provided on the second oil pipe. The first electrically controlled valve is used to allow the hydraulic oil in the oil tank to flow into the push cylinder, and the second electrically controlled valve is used to allow the hydraulic oil at the end of the push cylinder away from the movable end to flow back to the oil tank.

[0016] By adopting the above technical solution, when the hydraulic cylinder needs to extend, the first solenoid valve is opened and the second solenoid valve is closed. The pump draws hydraulic oil from the tank into the hydraulic cylinder, making it easy for the hydraulic cylinder to extend and for the positioning cylinder to extend. When the hydraulic cylinder needs to retract, the second solenoid valve is opened and the first solenoid valve is closed. When the positioning cylinder extends, the positioning spring accumulates elastic force. The positioning spring drives the movable end of the positioning cylinder to retract through the elastic force. The movable end of the positioning cylinder causes the hydraulic oil to flow back into the hydraulic cylinder, and the movable end of the hydraulic cylinder causes the hydraulic oil to flow back into the tank. Thus, by controlling the oil inlet of the hydraulic cylinder through the first solenoid valve and the oil return of the hydraulic cylinder through the second solenoid valve, the positioning spring facilitates the automatic reset of the positioning cylinder and the hydraulic cylinder.

[0017] Optionally, the synchronous belt of the synchronous belt conveyor is embedded with a plurality of first electromagnet blocks along the extension direction, the tray is made of ferromagnetic material, and the energization state of the first electromagnet blocks is consistent with the energization state of the motor of the synchronous belt conveyor.

[0018] By adopting the above technical solution, when the motor of the synchronous belt conveyor is energized, the synchronous belt of the synchronous belt conveyor drives the pallet and goods to move along the transfer direction. At the same time, the first electromagnet block on the synchronous belt of the synchronous belt conveyor is also energized. The first electromagnet block uses magnetic force to make the ferromagnetic material pallet adhere to the synchronous belt of the synchronous belt conveyor, so that the positioned pallet is not easy to move during the transfer process, making the pallet positioning stable and reliable.

[0019] Optionally, a plurality of protective grooves are provided on the side of the guide bar away from the support frame along the transport direction of the pallet. A magnetic base is slidably disposed in the protective groove, and a displacement sensor is fixedly connected to the magnetic base. The probe of the displacement sensor is used to face the goods on the pallet, and the displacement sensor is used to measure the distance between itself and the goods on the pallet. When the first electromagnet moves, the magnetic base is partially aligned with the first electromagnet and has the same polarity as the first electromagnet. The protective groove is used to accommodate the magnetic base and the displacement sensor.

[0020] By adopting the above technical solution, when the first electromagnet is energized, it pushes the magnetic base to slide in the protective groove through magnetic force, allowing the displacement sensor on the magnetic base to slide out of the protective groove. The displacement sensor measures the displacement of the goods and detects and positions the goods during the transfer process, making the positioning of the goods more accurate. When the first electromagnet is de-energized, the magnetic force of the first electromagnet on the magnetic base is released, allowing the magnetic base and displacement sensor to slide into the protective groove. Thus, the displacement sensor probe is protected when the pallet is not in operation.

[0021] Optionally, the positioning bar is provided with multiple sets of guide components, which are arranged along the length of the positioning bar. Each guide component includes a guide wheel, a drive unit, and a reversing unit. The guide wheel is connected to the positioning bar and is located on the side of the positioning bar closer to the support frame. The guide wheel extends beyond the edge of the positioning bar. The drive unit is connected between the guide wheel and the positioning plate and is used to drive the guide wheel to slide away from the pallet as the positioning plate approaches the pallet. The reversing unit is connected between the guide wheel and the positioning bar and is used to adjust the rolling direction of the guide wheel and to make the rolling direction of the guide wheel consistent with the transport direction of the pallet.

[0022] By adopting the above technical solution, when the pallet and goods slide down the inclined surface of the positioning strip onto the synchronous belt conveyor, the guide wheel guides the sliding of the pallet, making it easy for the pallet to slide between the two positioning strips; when the positioning plate approaches the pallet under the drive of the push cylinder, the drive unit drives the guide wheel away from the pallet, so that the positioning hole of the pallet is not easily affected by the guide wheel; after the positioning plate is reset, the synchronous belt conveyor transports the pallet, and the reversing unit adjusts the rolling direction of the guide wheel so that the rolling direction of the guide wheel is consistent with the transport direction of the pallet, thereby making it easy for the state of the guide wheel to change with the movement state of the pallet.

[0023] Optionally, the driving unit includes a slider, a guide spring, a pull rope, and a guide pulley. The slider is slidably connected to the positioning bar and connected to the guide wheel. The two ends of the guide spring are respectively fixed to the slider and the positioning bar, and the guide spring is used to drive the guide wheel to reset. The two ends of the pull rope are respectively fixed to the slider and the positioning plate. There are two guide pulleys. One guide pulley is located on the side of the slider away from the guide wheel and is rotatably connected to the positioning bar. The other guide pulley is located on the side of the slider away from the positioning bar and is rotatably connected to the support frame. The pull rope rests on the two guide pulleys.

[0024] By adopting the above technical solution, when the positioning plate is close to the pallet, the positioning plate pulls the pull rope to slide on the two guide pulleys, the pull rope pulls the slider to slide, and the guide spring accumulates elastic force, the slider drives the guide wheel away from the pallet; when the positioning plate is reset, the guide spring drives the slider to reset through elastic force, the slider drives the guide wheel to reset, thus making it easy for the guide wheel to move away from the pallet when positioning the pallet in the positioning hole, and making it easy for the guide wheel to automatically reset after the positioning plate is reset.

[0025] Optionally, the reversing part includes a coil spring, a second electromagnet block, and a driving block. The guide wheel is rotatably connected to a connecting rod, and the end of the connecting rod away from the guide wheel is rotatably connected to the slider. One end of the coil spring is fixedly connected to the end of the connecting rod away from the guide wheel, and the other end is fixedly connected to the slider. The second electromagnet block is embedded in the positioning strip. The driving block is fixedly connected to the connecting rod and corresponds to the second electromagnet block. The driving block is made of ferromagnetic material. The energized state of the second electromagnet block is consistent with the energized state of the motor of the synchronous belt conveyor mechanism. The coil spring is used to drive the driving block to be set at 90° relative to the second electromagnet block.

[0026] By adopting the above technical solution, when the motor of the synchronous belt conveyor is powered on, the second electromagnet is also powered on. The second electromagnet uses magnetic force to attract the drive block to a state facing itself. The drive block drives the connecting rod to rotate, and the connecting rod drives the guide wheel to rotate. The coil spring accumulates elastic force, making it easier for the rolling direction of the guide wheel to be consistent with the transport direction of the pallet. When the motor of the synchronous belt conveyor is powered off, the second electromagnet is also powered off, releasing the magnetic attraction of the second electromagnet to the drive block. The coil spring uses elastic force to reset the connecting rod and the guide wheel, thus making it easier for the rolling direction of the guide wheel to be consistent with the transport direction of the pallet.

[0027] In summary, this application includes at least one of the following beneficial technical effects: By setting up the air pump and air duct, it is easier to fit the positioning hole into the positioning post, reducing the wear of the positioning post on the positioning hole; By setting up a drive cylinder and a closing cylinder, the wind force can be interrupted in time after the positioning column slides into the positioning hole, so that the wind force is not likely to affect the sliding of the positioning column in the positioning hole. By setting up a positioning cylinder and connecting the positioning cylinder with the push cylinder, the pallet and goods can be positioned synchronously. By setting guide wheels, a drive unit, and a reversing unit, the rolling direction of the guide wheels can be made consistent with the transport direction of the pallet. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the background technology of this application; Figure 2 This is a structural schematic diagram of an embodiment of this application; Figure 3 This is a cross-sectional view intended to illustrate the floating components; Figure 4 It is a cross-sectional view intended to illustrate the closed component; Figure 5 This is a cross-sectional view intended to illustrate the push plate and the closing spring; Figure 6 This is a cross-sectional view intended to illustrate the positioning spring; Figure 7 This is a cross-sectional view intended to illustrate the magnetic base and displacement sensor; Figure 8 This is a cross-sectional view intended to illustrate the guide components; Figure 9 yes Figure 8 A magnified view of point A in the middle.

[0029] Explanation of reference numerals in the attached figures: 1. Transfer device; 11. Support frame; 12. Synchronous belt conveyor mechanism; 13. Positioning bar; 14. Push cylinder; 15. Positioning plate; 151. Positioning hole; 16. Guide bar; 2. Floating assembly; 21. Air duct; 22. Air pump; 3. Sealing assembly; 31. Drive cylinder; 311. Push plate; 312. Sealing spring; 32. Sealing cylinder; 4. Relief groove; 5. Positioning cylinder; 51. Positioning spring; 6. Pump; 61. Oil tank; 611. First 612. Oil pipe; 613. First electrically controlled valve; 614. Second oil pipe; 615. Second electrically controlled valve; 7. First electromagnet block; 8. Protective groove; 81. Magnetic base; 82. Displacement sensor; 9. Guide assembly; 91. Guide wheel; 911. Connecting rod; 92. Drive unit; 921. Slider; 922. Guide spring; 923. Pull rope; 924. Guide pulley; 93. Reversing unit; 931. Coil spring; 932. Second electromagnet block; 933. Drive block. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 2-9 This application will be described in further detail.

[0031] This application discloses a positioning structure for palletized cargo transfer. (Refer to...) Figures 2-4 A positioning structure for palletized cargo transfer includes a floating component 2, a sealing component 3, and a positioning cylinder 5 disposed on a transfer device 1. The transfer device 1 is used to position and transfer pallets and cargo. The floating component 2 is used to float the pallet during the positioning process of the transfer device 1. The sealing component 3 is used to interrupt the buoyancy after the transfer device 1 positions the pallet. The positioning cylinder 5 is used to position the cargo on the pallet during the positioning process of the transfer device 1.

[0032] In use, the pallet is placed on the transfer device 1, which positions and moves the pallet. The floating component 2 floats the pallet during the positioning process of the transfer device 1. The sealing component 3 interrupts the buoyancy after the transfer device 1 positions the pallet, making the pallet easier to position and reducing the wear of the transfer device 1 during the positioning process. The positioning cylinder 5 positions the goods on the pallet, so that both the pallet and the goods can be positioned, which makes it easier for the robot to accurately pick up and put down the pallet and the goods.

[0033] Reference Figure 2The transfer device 1 includes a support frame 11, a synchronous belt conveyor 12, a positioning bar 13, a push cylinder 14, a positioning plate 15, and a guide bar 16. The support frame 11 is horizontally arranged and has a rectangular frame shape. The synchronous belt conveyor 12 is arranged on the support frame 11, and the conveying direction is the same as the length direction of the support frame 11. The synchronous belt conveyor 12 has two synchronous belts, which are located on both sides of the length direction of the support frame 11. The two synchronous belts of the synchronous belt conveyor 12 are driven by the same motor.

[0034] Four positioning bars 13 are provided and are located at both ends of the support frame 11. The two positioning bars 13 at each end of the support frame 11 are located above the synchronous belt conveyor 12 and are located on both sides of the length direction of the support frame 11. The positioning bars 13 are fixed to the support frame 11 and are rectangular. The length direction of the positioning bars 13 is parallel to the length direction of the support frame 11. The two positioning bars 13 at each end of the support frame 11 are inclined on the side that is close to each other, and the flared opening formed by the inclination faces away from the synchronous belt conveyor 12.

[0035] There are two guide bars 16, both of which are rectangular. The two guide bars 16 are located in the middle of the support frame 11 and are located on both sides of the support frame 11 in the length direction. The length direction of the guide bars 16 is the same as the length direction of the support frame 11 and is fixed to the support frame 11. The guide bars 16 are located above the synchronous belt conveyor mechanism 12.

[0036] Reference Figure 4 There are two push cylinders 14, both located inside one end of the support frame 11 along its length. Both push cylinders 14 are vertically arranged, and the piston rods are located at their respective top ends. Both push cylinders 14 are fixedly connected to the support frame 11.

[0037] The positioning plate 15 is rectangular and horizontally positioned. The bottom surface of the positioning plate 15 is fixed to the piston rods of the two push cylinders 14. The length direction of the positioning plate 15 is the same as the length direction of the support frame 11. The two push cylinders 14 are arranged along one of the diagonals of the positioning plate 15.

[0038] The positioning plate 15 has two positioning holes 151 that penetrate its own thickness. The two positioning holes 151 are arranged along another diagonal of the positioning plate 15. The positioning holes 151 are circular. The tray is horizontally set, and two positioning posts are fixedly connected to the bottom surface for simultaneous insertion into the positioning holes 151. The positioning posts are adapted to the positioning holes 151 and are vertically set. The bottom end of the positioning posts is conical.

[0039] In use, the pallet and goods are placed between the two positioning bars 13. The pallet slides down the inclined surface of the two positioning bars 13 onto the synchronous belt conveyor 12 to achieve initial positioning of the pallet. The two pushing cylinders 14 are activated to bring the positioning plate 15 close to the pallet and make the positioning hole 151 fit into the positioning post. The pallet is accurately positioned through the positioning hole 151, so that the pallet can be accurately positioned during transportation.

[0040] Reference Figure 3 The floating assembly 2 is provided in two sets, and each set corresponds to the push cylinder 14. The floating assembly 2 includes an air duct 21 and an air pump 22. The piston rod of the push cylinder 14 is hollow inside and connected to the top surface of the positioning plate 15. The air duct 21 is a circular tube and is set vertically. The air duct 21 slides through the end of the push cylinder 14 away from the piston rod. The top end of the air duct 21 is connected to the piston rod of the push cylinder 14. The bottom end of the air duct 21 is connected to the air pump 22 through a pipe. The air pump 22 is fixed to the support frame 11.

[0041] Reference Figure 4 and Figure 5 The sealing component 3 is provided in two sets, and each set corresponds to one of the two positioning holes 151 and the two pushing cylinders 14. The sealing component 3 includes a driving cylinder 31 and a sealing cylinder 32. A rectangular clearance groove 4 is provided on the side wall of the positioning hole 151. The driving cylinder 31 is fixed in the clearance groove 4, and the moving end faces the opening of the clearance groove 4. The moving end of the driving cylinder 31 is normally in the extended state.

[0042] Reference Figure 5 A push plate 311 is fixedly connected to the movable end of the drive cylinder 31. The push plate 311 is rectangular and inclined along the insertion direction of the positioning pin. When the positioning pin is fully inserted into the positioning hole 151, the push plate 311 slides completely into the relief groove 4. A closing spring 312 is provided inside the drive cylinder 31 near the movable end. The two ends of the closing spring 312 are fixedly connected to the drive cylinder 31 and the movable end of the drive cylinder 31, respectively. The closing spring 312 is used to drive the movable end of the drive cylinder 31 to return to the extended state.

[0043] Reference Figure 4 The sealing cylinder 32 is fixed to the piston rod of the pushing cylinder 14, and its movable end slides into the piston rod of the pushing cylinder 14. The movable end of the sealing cylinder 32 is used to seal the piston rod of the pushing cylinder 14. The end of the sealing cylinder 32 away from the movable end is connected to the end of the driving cylinder 31 away from the movable end through a pipeline, and hydraulic oil flows through it.

[0044] In use, the air pump 22 is started, blowing air into the air duct 21. The air then flows through the air duct 21 into the piston rod of the push cylinder 14. The air from the piston rod of the push cylinder 14 propels the tray, applying buoyancy to the tray and preventing wear on the positioning pin when it is inserted into the positioning hole 151. After the positioning pin is inserted into the positioning hole 151, its conical bottom end presses against the push plate 311, causing it to slide into the clearance groove 4, thus retracting the movable end of the drive cylinder 31. The closing spring 312 accumulates elastic force, which drives the movable end of the hydraulic cylinder 31 to squeeze the hydraulic oil into the closing cylinder 32. The movable end of the closing cylinder 32 is then inserted into the piston rod of the pushing cylinder 14, and the movable end of the closing cylinder 32 closes the piston rod, thereby interrupting the airflow. When the positioning pin disengages from the positioning hole 151, the closing spring 312 automatically resets the movable end of the driving cylinder 31 through its elastic force. Thus, the driving cylinder 31 and the closing cylinder 32 make it easier for the airflow to coordinate with the positioning hole 151 and the positioning pin.

[0045] Reference Figure 3 and Figure 6 There are two positioning cylinders 5, each corresponding to the positioning bar 13 and the pushing cylinder 14. The positioning cylinders 5 are horizontally positioned and fixed to the middle of the top surface of the positioning bar 13. The movable end of the positioning cylinder 5 is used to face the goods on the pallet. A positioning spring 51 is provided inside the positioning cylinder 5 near the movable end. The two ends of the positioning spring 51 are fixed to the positioning cylinder 5 and the movable end of the positioning cylinder 5, respectively. The positioning spring 51 is used to drive the movable end of the positioning cylinder 5 to retract.

[0046] Reference Figure 3 The end of the positioning cylinder 5 furthest from the moving end is connected to the end of the pushing cylinder 14 near the piston rod via a pipeline, and hydraulic oil also flows through it. The end of the pushing cylinder 14 furthest from the piston rod is connected to a first oil pipe 611 and a second oil pipe 613. The ends of the first oil pipes 611 of the two pushing cylinders 14 furthest from the pushing cylinder 14 are connected to a pump 6 via a pipeline, and are connected to the outlet of the pump 6. The pump 6 is fixed to the support frame 11, and its inlet is connected to an oil tank 61. The oil tank 61 is fixed to the support frame 11 and is used to store hydraulic oil. The ends of the two second oil pipes 613 furthest from the pushing cylinder 14 are both connected to the oil tank 61.

[0047] Each of the two first oil pipes 611 is equipped with a first electrically controlled valve 612, and each of the two second oil pipes 613 is equipped with a second electrically controlled valve 614. The first electrically controlled valve 612 is used to allow the hydraulic oil in the oil tank 61 to flow into the push cylinder 14, and the second electrically controlled valve 614 is used to allow the hydraulic oil at the end of the push cylinder 14 away from the moving end to flow back to the oil tank 61. When the first electrically controlled valve 612 is open, the second electrically controlled valve 614 is closed, and when the first electrically controlled valve 612 is closed, the second electrically controlled valve 614 is open.

[0048] In use, the first electrically controlled valve 612 is opened and the second electrically controlled valve 614 is closed. The pump 6 is started, and the pump 6 draws the hydraulic oil from the oil tank 61 into the push cylinder 14, pushing the movable end of the cylinder 14 to extend and squeezing the hydraulic oil into the positioning cylinder 5, causing the movable end of the positioning cylinder 5 to extend and retract, and causing the positioning spring 51 to accumulate elastic force. The movable end of the positioning cylinder 5 positions the goods on the pallet. When the push cylinder 14 needs to retract, the first electrically controlled valve 612 is closed and the second electrically controlled valve 614 is opened. The positioning spring 51 drives the movable end of the positioning cylinder 5 to retract through its elastic force. The movable end of the positioning spring 51 causes the hydraulic oil to flow back to the push cylinder 14. The push cylinder 14 causes the hydraulic oil away from the movable end to flow into the oil tank 61 through the second oil pipe 613, thus making it easy for the positioning cylinder 5 to perform positioning operations synchronously with the push cylinder 14.

[0049] Reference Figure 2 Multiple first electromagnet blocks 7 are embedded on the synchronous belt of the synchronous belt conveyor mechanism 12 along the extension direction. The first electromagnet blocks 7 are located on the outside of the synchronous belt of the synchronous belt conveyor mechanism 12 and are rectangular blocks. The length direction of the first electromagnet blocks 7 is the same as the width direction of the synchronous belt of the synchronous belt conveyor mechanism 12. The first electromagnet blocks 7 are flush with the synchronous belt of the synchronous belt conveyor mechanism 12 and the energization state is the same as the energization state of the motor of the synchronous belt conveyor mechanism 12. The tray is made of ferromagnetic material.

[0050] Reference Figure 2 and Figure 7 The top surface of the guide bar 16 has multiple protective grooves 8 along its length. The protective grooves 8 are rectangular. A magnetic seat 81 is slidably arranged in the protective groove 8. The sliding direction of the magnetic seat 81 is vertical. The magnetic seat 81 is rectangular and horizontally arranged. When the first electromagnet block 7 moves with the synchronous belt of the synchronous belt conveyor mechanism 12, the magnetic seat 81 is partially aligned with the first electromagnet block 7, and its polarity is the same as that of the first electromagnet block 7 after it is energized.

[0051] A displacement sensor 82 is fixedly connected to the top surface of the magnetic base 81. The displacement sensor 82 is an infrared displacement sensor. The probe of the displacement sensor 82 is used to face the goods on the pallet. The displacement sensor 82 is used to measure the distance between itself and the goods on the pallet. The protective groove 8 is used to accommodate the magnetic base 81 and the displacement sensor 82.

[0052] In use, when the motor of the synchronous belt conveyor 12 is powered on, the first electromagnet block 7 is also powered on. The first electromagnet block 7 uses magnetic force to make the pallet adhere to the synchronous belt of the synchronous belt conveyor 12, making the pallet easy to move stably. At the same time, the first electromagnet block 7 uses magnetic force to push the magnetic base 81 to slide in the vertically upward direction, so that the displacement sensor 82 slides out of the protective groove 8, while the magnetic base 81 remains in the protective groove 8. The displacement sensor 82 measures the displacement of the goods on the pallet relative to itself, so that the goods can be measured and positioned.

[0053] Reference Figure 8 The positioning bar 13 is provided with multiple sets of guide components 9 along its own length direction. The guide components 9 are located between the positioning bar 13 and the synchronous belt conveyor 12. The guide components 9 include guide wheels 91, drive parts 92 and reversing parts 93. The guide wheels 91 are located on the side of the positioning bar 13 near the pallet. Part of the guide wheels 91 extends beyond the edge of the positioning bar 13. The sidewall of the guide wheels 91 is used to abut against the pallet.

[0054] Reference Figure 9 The drive unit 92 includes a slider 921, a guide spring 922, a pull rope 923, and a guide pulley 924. The slider 921 is slidably connected to the bottom surface of the positioning strip 13, and the sliding direction is towards or away from the tray. The slider 921 is rectangular. The guide wheel 91 is rotatably connected to a circular rod-shaped connecting rod 911, and is located at one end of the connecting rod 911. The end of the connecting rod 911 away from the guide wheel 91 is rotatably connected to the side of the slider 921 that is close to the tray.

[0055] Reference Figure 8 and Figure 9 One end of the guide spring 922 is fixed to the side of the slider 921 away from the connecting rod 911, and the other end is fixed to the bottom surface of the positioning strip 13. The guide spring 922 is used to drive the guide wheel 91 to reset. One end of the pull rope 923 is fixed to the side of the slider 921 near the guide spring 922, and the other end is fixed to the positioning plate 15.

[0056] Reference Figure 8 There are two guide pulleys 924, arranged vertically. The upper guide pulley 924 is located on the side of the slider 921 away from the guide wheel 91 and is rotatably connected to the bottom surface of the positioning strip 13. The lower guide pulley 924 is located on the side of the slider 921 away from the positioning strip 13 and is rotatably connected to the support frame 11. The pull rope 923 is laid on the two guide pulleys 924 and is in a tensioned state.

[0057] Reference Figure 9The reversing unit 93 includes a coil spring 931, a second electromagnet block 932, and a drive block 933. The coil spring 931 is disposed between the connecting rod 911 and the slider 921. One end of the coil spring 931 is fixedly connected to the connecting rod 911, and the other end is fixedly connected to the slider 921. The second electromagnet block 932 is embedded in the bottom surface of the positioning strip 13 and is positioned directly opposite to the connecting rod 911. The second electromagnet block 932 is rectangular and its energized state is consistent with the energized state of the motor of the synchronous belt conveyor mechanism 12. The drive block 933 is rectangular and is fixedly connected to the middle of the connecting rod 911. The drive block 933 corresponds to the second electromagnet block 932 and is made of ferromagnetic material. The coil spring 931 is used to drive the drive block 933 to be positioned at 90° relative to the second electromagnet block 932.

[0058] In use, the pallet slides down to the guide wheel 91, which helps the pallet slide stably onto the synchronous belt of the synchronous belt conveyor mechanism 12. When the positioning plate 15 approaches the pallet, the positioning plate 15 pulls the pull rope 923 to move. The pull rope 923 pulls the slider 921 away from the pallet through two guide pulleys 924, and causes the guide spring 922 to accumulate elastic force, making it less likely for the guide wheel 91 to affect the precise positioning of the pallet. When the positioning plate 15 moves away from the pallet, the guide spring 922 drives the slider 921 and the guide wheel 91 to reset through elastic force. When the motor of the synchronous belt conveyor mechanism 12 is powered on, the second electromagnet block 932 is also powered on. The second electromagnet block 932 drives the drive block 933 to rotate to a position directly opposite the second electromagnet block 932, causing the rolling direction of the guide wheel 91 to rotate 90°, so that the transport direction of the pallet is always consistent with the rolling direction of the guide wheel 91.

[0059] The implementation principle of the positioning structure for palletized cargo transfer in this application embodiment is as follows: During use, the pallet and cargo slide between the inclined surfaces of the two positioning strips 13. With the assistance of the guide wheel 91, the pallet slides onto the synchronous belt of the synchronous belt conveyor mechanism 12. The pump 6 and the air pump 22 are started. The pump 6 draws the hydraulic oil in the oil tank 61 into the push cylinder 14 through the first oil pipe 611. The push cylinder 14 pushes the positioning plate 15 close to the pallet, and the positioning hole 151 is fitted onto the positioning post. The air pump 22 blows air from the air pipe 21 and the piston rod of the push cylinder 14 onto the pallet. After the positioning post is inserted into the positioning hole 151, the drive cylinder 31 and the sealing cylinder 32 interrupt the airflow, so that the positioning hole 151 and the positioning post are not easily worn during the positioning process.

[0060] The hydraulic cylinder 14 is pushed to drive the positioning cylinder 5 to extend. The positioning cylinder 5 positions the goods. The positioning plate 15 pulls the guide wheel 91 away from the pallet through the pull rope 923, the slider 921 and the connecting rod 911, so that the positioning of the positioning hole 151 and the positioning post is not easily affected by the guide wheel 91.

[0061] The motor of the synchronous belt conveyor 12 is started, which also energizes the first electromagnet block 7 and the second electromagnet block 932. The first electromagnet block 7 causes the pallet to be attracted to the synchronous belt of the synchronous belt conveyor 12, and causes the magnetic base 81 to drive the displacement sensor 82 to slide out of the protective groove 8. The displacement sensor 82 measures the distance between itself and the goods and positions the goods. The second electromagnet block 932 drives the drive block 933 to rotate through magnetic force. The drive block 933 drives the guide wheel 91 to rotate, so that the rolling direction of the guide wheel 91 is always consistent with the movement direction of the pallet.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning structure for palletized cargo transfer, characterized in that: The device includes a floating assembly (2) for blowing a tray and a closing assembly (3) for interrupting the buoyancy of the blowing. Both the floating assembly (2) and the closing assembly (3) are provided in two sets and correspond one-to-one with the push cylinder (14). The floating assembly (2) includes a duct (21) and a pump (22). The piston rod of the push cylinder (14) is hollow inside and connected to the top surface of the positioning plate (15). The duct (21) slides through the end of the push cylinder (14) away from the piston rod and is connected to the piston rod. The pump (22) is fixed to the support frame (11) and is connected to the end of the duct (21) outside the push cylinder (14) through a pipeline. The closing assembly (3) is provided on the piston rod of the push cylinder (14) and is used to close the piston rod of the push cylinder (14) after the positioning pin is inserted into the positioning hole (151). The sealing component (3) also corresponds one-to-one with the positioning hole (151). The sealing component (3) includes a driving cylinder (31) and a sealing cylinder (32). The side wall of the positioning hole (151) is provided with a clearance groove (4). The driving cylinder (31) is fixedly connected in the clearance groove (4), and the movable end faces the opening of the clearance groove (4). The movable end of the driving cylinder (31) is normally in the extended state and is fixedly connected with a push plate (311). The push plate (311) is inclined along the insertion direction of the positioning post. The sealing cylinder (32) is fixedly connected to the piston rod of the pushing cylinder (14), and the end away from the movable end is connected to the end away from the movable end of the driving cylinder (31) through a pipeline. Hydraulic oil flows in the sealing cylinder (32) and the pushing cylinder (14). The movable end of the sealing cylinder (32) slides into the piston rod of the pushing cylinder (14) and is used to seal the piston rod of the pushing cylinder (14).

2. The positioning structure for palletized cargo transfer according to claim 1, characterized in that: A closing spring (312) is provided at one end of the drive cylinder (31) near the movable end. The two ends of the closing spring (312) are fixedly connected to the drive cylinder (31) and the movable end of the drive cylinder (31) respectively. The closing spring (312) is used to drive the movable end of the drive cylinder (31) to return to the extended state.

3. The positioning structure for palletized cargo transfer according to claim 1, characterized in that: A positioning cylinder (5) for positioning goods on a pallet is fixedly installed on the positioning bar (13). The positioning cylinder (5) corresponds one-to-one with the pushing cylinder (14). The movable end of the positioning cylinder (5) is used to face the goods on the pallet, and the end away from the movable end is connected to the end of the pushing cylinder (14) near the movable end through a pipeline. Hydraulic oil also flows between the positioning cylinder (5) and the pushing cylinder (14).

4. The positioning structure for palletized cargo transfer according to claim 3, characterized in that: A positioning spring (51) is provided at one end of the positioning cylinder (5) near the movable end. The two ends of the positioning spring (51) are fixedly connected to the positioning cylinder (5) and the movable end of the positioning cylinder (5), respectively. The positioning spring (51) is used to drive the movable end of the positioning cylinder (5) to retract. Two push cylinders (14) are connected to a pump (6). The inlet of the pump (6) is connected to an oil tank (61). The oil tank (61) is used to store hydraulic oil. The outlet of the pump (6) is connected to two first oil pipes (611) through a pipeline. The ends of the two first oil pipes (611) away from the pump (6) are respectively connected to the two push cylinders (14). 14) At the end away from the active end, the first oil pipe (611) is provided with a first electrically controlled valve (612). The oil tank (61) is connected to two second oil pipes (613). The ends of the two second oil pipes (613) away from the oil tank (61) are respectively connected to the ends of the two push cylinders (14) away from the active end. The second oil pipes (613) are provided with second electrically controlled valves (614). The first electrically controlled valve (612) is used to allow the hydraulic oil in the oil tank (61) to flow into the push cylinder (14). The second electrically controlled valve (614) is used to allow the hydraulic oil at the end of the push cylinder (14) away from the active end to flow back to the oil tank (61).

5. The positioning structure for palletized cargo transfer according to claim 3, characterized in that: The synchronous belt of the synchronous belt conveyor (12) is embedded with multiple first electromagnet blocks (7) along the extension direction. The tray is made of ferromagnetic material. The energization state of the first electromagnet blocks (7) is consistent with the energization state of the motor of the synchronous belt conveyor (12).

6. The positioning structure for palletized cargo transfer according to claim 5, characterized in that: The guide bar (16) has multiple protective grooves (8) on the side away from the support frame (11) along the transport direction of the pallet. A magnetic seat (81) is slidably arranged in the protective groove (8). A displacement sensor (82) is fixedly connected to the magnetic seat (81). The probe of the displacement sensor (82) is used to face the goods on the pallet. The displacement sensor (82) is used to measure the distance between itself and the goods on the pallet. When the first electromagnet block (7) moves, the magnetic seat (81) is partially facing the first electromagnet block (7) and the polarity is the same as that of the first electromagnet block (7). The protective groove (8) is used to accommodate the magnetic seat (81) and the displacement sensor (82).

7. The positioning structure for palletized cargo transfer according to claim 1, characterized in that: The positioning bar (13) is provided with multiple sets of guide components (9), which are arranged along the length of the positioning bar (13). Each guide component (9) includes a guide wheel (91), a drive unit (92), and a reversing unit (93). The guide wheel (91) is connected to the positioning bar (13) and is located on the side of the positioning bar (13) near the support frame (11). The guide wheel (91) extends beyond the edge of the positioning bar (13). The drive unit (92) is connected between the guide wheel (91) and the positioning plate (15) and is used to drive the guide wheel (91) to slide away from the pallet as the positioning plate (15) approaches the pallet. The reversing unit (93) is connected between the guide wheel (91) and the positioning bar (13) and is used to adjust the rolling direction of the guide wheel (91) and to make the rolling direction of the guide wheel (91) consistent with the transport direction of the pallet.

8. The positioning structure for palletized cargo transfer according to claim 7, characterized in that: The driving unit (92) includes a slider (921), a guide spring (922), a pull rope (923), and a guide pulley (924). The slider (921) is slidably connected to the positioning bar (13) and connected to the guide wheel (91). The two ends of the guide spring (922) are respectively fixed to the slider (921) and the positioning bar (13). The guide spring (922) is used to drive the guide wheel (91) to reset. The two ends of the pull rope (923) are respectively fixed to the positioning bar (13). The slider (921) and the positioning plate (15) are provided with two guide pulleys (924). One of the guide pulleys (924) is located on the side of the slider (921) away from the guide wheel (91) and is rotatably connected to the positioning bar (13). The other guide pulley (924) is located on the side of the slider (921) away from the positioning bar (13) and is rotatably connected to the support frame (11). The pull rope (923) is laid on the two guide pulleys (924).

9. A positioning structure for palletized cargo transfer according to claim 8, characterized in that: The reversing unit (93) includes a coil spring (931), a second electromagnet block (932), and a driving block (933). A connecting rod (911) is rotatably connected to the guide wheel (91). One end of the connecting rod (911) away from the guide wheel (91) is rotatably connected to the slider (921). One end of the coil spring (931) is fixedly connected to the end of the connecting rod (911) away from the guide wheel (91), and the other end is fixedly connected to the slider (921). The second electromagnet... The iron block (932) is embedded in the positioning strip (13), the driving block (933) is fixed to the connecting rod (911) and corresponds to the second electromagnet block (932). The driving block (933) is made of ferromagnetic material. The energized state of the second electromagnet block (932) is consistent with the energized state of the motor of the synchronous belt conveyor (12). The coil spring (931) is used to drive the driving block (933) to be set at 90° relative to the second electromagnet block (932).

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