An apparatus for handling a wire reel

Abstract

The present application relates to the technical field of automatic guided vehicle, and discloses a device for carrying a silk reel, which comprises an automatic guided vehicle, a fork arranged on the front side of the automatic guided vehicle, and a damping mechanism arranged on both sides of the fork. The damping mechanism comprises a base, a damping block, a guide spring arranged between the base and the damping block to make the damping block have a tendency to move away, a supporting roller rotatably arranged on the front side of the base, an elastic buffer layer sleeved on the supporting roller, and an avoiding slot formed in the damping block for the supporting roller to extend out. When the silk reel presses the damping block to make it retreat and compress the guide spring, the supporting roller extends out and presses the silk reel through the elastic buffer layer to jointly buffer the impact and reduce the load of the guide spring. When the fork lifts and closes the gap, the supporting roller converts the sliding friction between the damping block and the silk reel into rolling friction, further reducing the stress on the spring. The present application significantly prolongs the service life of the guide spring through the double buffering and friction conversion mechanism.

Description

Technical Field

[0001] This invention relates to the field of automated guided vehicles (AGVs), and more particularly to a device for transporting silk carts. Background Technology

[0002] Utility model patent CN223254027U discloses a yarn transport device that automatically hooks and detaches from the crossbar at the front of the yarn transport vehicle by setting a locking hook mechanism and a drive mechanism on the front side of the automated guided vehicle (AGV). To improve the accuracy and stability of the docking process, the device also features a shock-absorbing mechanism, which includes a laterally movable shock-absorbing block and a guide spring that provides elastic restoring force to the shock-absorbing block. When the AGV approaches the yarn transport vehicle, the shock-absorbing block contacts the side of the crossbar first, and the guide spring is compressed to absorb the collision energy, thereby achieving buffering and pre-positioning, providing conditions for the subsequent precise hooking.

[0003] However, during long-term use, the guide spring undergoes multiple "compression-rebound" stress cycles. In continuous operation, the spring material accumulates microstructural damage due to prolonged exposure to alternating loads, leading to irreversible degradation of its macroscopic performance. This manifests as a decrease in elastic modulus, a shortening of free length, a weakening of restoring force, and an increase in hysteresis. This performance degradation directly causes instability in the damping mechanism's buffer stroke and drift of the pre-positioning reference point, ultimately affecting the docking accuracy and reliability of the locking hook mechanism. Therefore, existing wire car handling devices require improvement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a device for transporting wire carriages, which can reduce the wear of guide springs when the wire carriages are connected to the shock absorption mechanism, thereby extending their service performance and lifespan.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A device for transporting a wire trolley includes an automated guided vehicle (AGV), forks disposed at the front of the AGV, and shock-absorbing mechanisms disposed on both sides of the forks. The shock-absorbing mechanisms include a base disposed on the forks, a shock-absorbing block disposed at the front of the base, a guide spring disposed between the shock-absorbing block and the base to give the shock-absorbing block a lateral tendency to move away from the base, a support roller rotatably disposed at the front of the base, an elastic buffer layer disposed on the outer circumference of the support roller, and a clearance groove formed in the shock-absorbing block to allow the roller to extend laterally. When the forks enter the bottom of the wire trolley and the wire trolley laterally presses against the shock-absorbing block to make the shock-absorbing block retract against the elastic force of the guide spring, the support roller extends through the clearance groove and the elastic buffer layer presses against the front of the wire trolley.

[0007] When the elastic buffer layer presses against the front of the wire carriage and the forks are raised, the gap between the forks and the bottom of the wire carriage closes, causing the support rollers to roll on the front of the wire carriage.

[0008] The support roller is equipped with a detection unit for detecting the number of rotations of the support roller and outputting a detection signal. The detection unit is coupled to a controller for receiving the detection signal and outputting a control signal. The controller is coupled to an oil injection device that responds to the control signal. The controller has a preset number of rotations threshold.

[0009] When the detection unit detects that the number of rotations of the support roller exceeds the threshold, the oiling device injects grease into the guide spring to lubricate it.

[0010] Using the above scheme, when the wire carriage presses against the damping block on the damping mechanism, the damping block can buffer the impact under the elastic force of the guide spring. Simultaneously, the support roller extends from the clearance groove and presses against the front side of the wire carriage through the elastic buffer layer, thus compensating for the impact on the guide spring and extending its service life. When the damping mechanism is raised with the forks, the damping block will generate longitudinal friction with the front side of the wire carriage when closing the gap between the forks and the bottom of the wire carriage. At this time, since the support roller is the main force-bearing component, it can convert the sliding friction between the damping block and the wire carriage into rolling friction, thereby reducing the radial force on the guide spring and further extending its service life. At the same time, the number of times the support roller moves can be determined by the detection unit, effectively obtaining the number of times the guide spring has been used. When the number of times reaches a threshold, the controller can control the lubrication device to inject grease into the guide spring for maintenance, thereby further improving the service life and performance of the guide spring.

[0011] Preferably, the guide spring includes a guide rod laterally disposed on the damping block, a guide hole formed in the base for the guide rod to slide laterally through, an elastic element sleeved on the guide rod to generate elastic support force between the damping block and the base, and an anti-disengagement element disposed at the end of the guide rod away from the damping block to prevent the guide rod from disengaging from the guide hole.

[0012] Using the above solution, the sliding fit between the guide rod and the guide hole provides guidance, making the guide spring's operation more stable and smooth. The elastic element sleeved on the guide rod provides stable and durable elastic support. The anti-disengagement component prevents the guide rod from detaching from the guide hole, thereby improving the structural stability of the guide spring.

[0013] Preferably, the support roller is provided with a rotating shaft that rotates synchronously with the support roller, and the front side of the base is provided with a connecting seat for the rotating shaft to rotate.

[0014] The above solution allows the support rollers to be stably installed on the base and rotate smoothly.

[0015] Preferably, the connecting seat is provided with a bushing through which the rotating shaft passes, and the end of the bushing away from the connecting seat is provided with a connecting base for mounting the detection unit. The detection unit is mated to the rotating shaft to detect the rotation state of the rotating shaft.

[0016] Using the above scheme, the connection between the detection unit and the rotating shaft allows the rotation status of the support rollers to be determined by the rotation status of the shaft, thereby achieving status detection of the support rollers. The bushing not only enables power transmission between the detection unit and the rotating shaft but also extends the installation position of the detection unit to a location away from the support rollers, thus facilitating the installation and wiring of the detection unit.

[0017] Preferably, the guide rod has a sealed oil injection chamber for the oil injection device to dock and inject grease, and the surface of the guide rod has oil outlet holes connected to the oil injection chamber.

[0018] By adopting the above scheme, the guide rod can not only provide guidance but also have a self-lubricating effect.

[0019] Preferably, the oil injection device includes a syringe-type oil injector disposed on the shock-absorbing mechanism and connected to the oil injection chamber, and an injection pump connected to the syringe-type oil injector to drive the syringe-type oil injector into the oil injection chamber. The injection pump is coupled to and controlled by a controller.

[0020] By adopting the above scheme, the injection pump drives the syringe-type grease injector, which can accurately control the injection of grease, thereby ensuring the dosage and efficiency of the grease injection.

[0021] Preferably, the syringe-type grease injector includes a reservoir syringe for storing grease, a grease injection tube disposed at one end of the reservoir syringe, a piston that is slidably disposed in the inner cavity of the reservoir syringe, an opening at the other end of the reservoir syringe for the piston to enter and exit, and a push rod disposed at the end of the piston away from the grease injection tube.

[0022] The above-described design, combining the oil reservoir syringe, injection pipe, piston, and push rod, forms a mechanism that uses piston thrust to pump grease. This structure offers excellent sealing, allows for precise control of the injection volume via the push rod stroke, and utilizes mature, easily replaceable, and maintainable components, thus reducing the implementation and maintenance costs of the grease injector.

[0023] Preferably, the end of the guide rod away from the damping block is provided with an oil nozzle connected to the oil injection chamber, and the oil nozzle is connected to the oil injection pipe through an oil pipe.

[0024] Using the above solution, the lubricator can be connected to the lubrication chamber inside the guide rod via an oil pipe, thereby enabling oil passage connection between the two and facilitating the injection of lubricating grease into the lubricator.

[0025] Preferably, the injection pump includes side plates disposed on both sides of the oil reservoir syringe, a mounting base disposed on the outside of the shock absorption mechanism, a mounting groove formed on the side of the mounting base for the oil reservoir syringe to be engaged, two opposing side walls formed in the mounting groove for the two side plates to be engaged respectively, a locking plate detachably connected to the mounting base to prevent the side plates from disengaging from the locking groove, and a power source disposed on the outside of the shock absorption mechanism to drive the push rod forward, the power source being coupled to and controlled by a controller.

[0026] The above-described design, with the cooperation of the side plate, mounting base, mounting groove, slot, and locking plate, enables a stable connection of the syringe-type oil injector to the shock absorption mechanism and facilitates easy assembly and disassembly. The power source generates thrust on the oil injector's push rod, thereby performing the oil injection operation.

[0027] Preferably, the power source is a push rod motor, whose output shaft is connected to the tail end of the push rod.

[0028] Using the above solution, the push rod motor operates stably. By receiving signals, it can precisely extend to the specified length, thereby accurately controlling the amount of grease injected each time, resulting in smooth and reliable operation.

[0029] Preferably, the front side of the silk-cart is provided with an extrusion block for laterally extruding and damping the block.

[0030] By adopting the above solution and installing an extrusion block on the front side of the wire car, the process of extruding the shock-absorbing block each time can be more precise and efficient, thereby making the entire buffering process more stable and smooth.

[0031] This invention, employing the above technical solutions, achieves significant technical effects: When the wire carriage presses against the damping block on the damping mechanism, the damping block can buffer under the elastic force of the guide spring. Simultaneously, the support roller extends from the clearance groove and presses against the front side of the wire carriage through the elastic buffer layer, thereby compensating for the impact on the guide spring and extending its service life. When the damping mechanism is raised with the forks, when closing the gap between the forks and the bottom of the wire carriage, the damping block will generate longitudinal friction with the front side of the wire carriage. At this time, since the support roller is the main force-bearing component, it can convert the sliding friction between the damping block and the wire carriage into rolling friction, thereby reducing the radial force on the guide spring and further extending its service life. Simultaneously, by detecting the number of times the support roller moves, the number of times the guide spring has been used can be effectively obtained. When the number reaches a threshold, the controller can control the lubrication device to inject grease into the guide spring for maintenance, further improving the service life and performance of the guide spring. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this embodiment. Figure 1 ;

[0033] Figure 2 This is a schematic diagram of the structure of this embodiment. Figure 2 ;

[0034] Figure 3 for Figure 2 An enlarged schematic diagram of part A shown;

[0035] Figure 4 This is a schematic diagram of the structure of this embodiment. Figure 3 ;

[0036] Figure 5 for Figure 4 An enlarged schematic diagram of part B is shown below;

[0037] Figure 6 This is a schematic diagram of the shock absorption mechanism in this embodiment. Figure 1 ;

[0038] Figure 7 This is a schematic diagram of the shock absorption mechanism in this embodiment. Figure 2 ;

[0039] Figure 8 for Figure 7 An enlarged schematic diagram of section C is shown below;

[0040] Figure 9 This is a schematic diagram of the shock absorption mechanism in this embodiment. Figure 3 ;

[0041] Figure 10 for Figure 9 An enlarged schematic diagram of part D is shown below;

[0042] Figure 11 This is a schematic diagram of the internal structure of the guide rod in this embodiment;

[0043] Figure 12 This is a schematic diagram of the internal structure of the lubrication distributor in this embodiment;

[0044] Figure 13 This is a system architecture diagram for this embodiment.

[0045] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Automated Guided Vehicle (AGV); 2. Forks; 3. Shock Absorption Mechanism; 4. Base; 5. Shock Absorption Block; 6. Guide Spring; 7. Support Roller; 8. Elastic Buffer Layer; 9. Clearance Groove; 10. Detection Unit; 11. Controller; 12. Guide Rod; 13. Guide Hole; 14. Elastic Component; 15. Anti-detachment Component; 16. Shaft; 17. Connecting Seat; 18. Bushing; 19. Connecting Base; 20. Oil Injection Chamber; 21. Oil Outlet; 22. Syringe-type Oil Injector; 24. Oil Reservoir Syringe; 25. Oil Injection Pipe; 26. Piston; 27. Opening; 28. Push rod; 29. ​​Oil nozzle; 30. Oil pipe; 31. Side plate; 32. Mounting base; 33. Mounting groove; 34. Slot; 35. Locking plate; 36. Push rod motor; 37. Output shaft; 38. Extrusion block; 39. Placement groove; 40. Pivot hole; 41. Protective plate; 42. First screw; 43. Second screw; 44. Clearance groove; 45. Lubrication distributor; 46. Inlet pipe; 47. Outlet pipe; 48. Clearance channel; 49. Third screw; 50. Connecting seat; 51. Fourth screw; 52. Locking hook mechanism; 53. Drive mechanism; 54. Crossbar; 55. Threading machine. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0047] like Figures 1 to 13 As shown, this embodiment discloses a device for transporting wire carts, including an automated guided vehicle 1, lifting forks 2 disposed on the front side of the automated guided vehicle 1, and shock-absorbing mechanisms 3 disposed on both sides of the forks 2. The lifting structure and operating principle of the forks 2 are common knowledge in the art and do not involve improvements to this solution, therefore, they will not be described in detail.

[0048] To achieve the damping function of the damping mechanism 3, the damping mechanism 3 includes a base 4 fixed to the front side of the rear end of the fork 2, a damping block 5 disposed on the front side of the base 4, a guide spring 6 disposed between the damping block 5 and the base 4 to give the damping block 5 a lateral tendency to move away from the base 4, a support roller 7 rotatably disposed on the front side of the base 4, an elastic buffer layer 8 disposed on the outer circumference of the support roller 7, and a clearance groove 9 opened in the damping block 5 to allow the roller to extend laterally. Four guide springs 6 are provided and are respectively installed at the four corners of the damping block 5. Each guide spring 6 includes a guide rod 12 laterally fixed to the damping block 5, a guide hole 13 laterally opened in the base 4 for the corresponding guide rod 12 to slide laterally through, an elastic element 14 sleeved on the guide rod 12 to generate elastic support force between the damping block 5 and the base 4, and an anti-disengagement element 15 disposed at the end of the guide rod 12 away from the damping block 5 to prevent the guide rod 12 from disengaging from the guide hole 13. The elastic element 14 is preferably a compression spring sleeved on the guide rod 12, with its two ends pressing against the damping block 5 and the base 4 respectively. The anti-detachment element 15 is disc-shaped, with a size larger than that of the guide hole 13, and is integrally set at the tail end of the guide rod 12, thereby playing a limiting role. The rotation plane of the support roller 7 is vertically arranged and perpendicular to the side of the damping block 5 away from the wire trolley 55. The center of each end face of the support roller 7 is integrally provided with a rotating shaft 16 that rotates synchronously with the support roller 7. The front side of the base 4 is fixed with a connecting seat 17 for rotating the rotating shaft 16. The side of the connecting seat 17 away from the damping block 5 has a longitudinally opened mounting groove 39 for accommodating the support roller 7. The two opposite side walls of the mounting groove 39 are provided with pivot holes 40 for the rotating shaft 16 to rotate through. The front side of the wire trolley 55 is fixed with two pressing blocks 38 for laterally pressing the two damping blocks 5 respectively. A protective plate 41 surrounds the outer side of the shock absorber 5, which protects the guide spring 6 from dust. The protective plate 41 is fixed to the side of the shock absorber 5 by the first screw 42, and the protective plate 41 is movably sleeved on the base 4 to prevent the shock absorber 5 from being obstructed when moving back and forth. In this embodiment, when the fork 2 enters the bottom of the wire carriage 55 and the wire carriage 55 laterally presses against the shock absorber 5 so that the shock absorber 5 overcomes the elastic force of the guide spring 6 and moves backward, the support roller 7 extends through the clearance groove 9 and presses the elastic buffer layer 8 against the front side of the wire carriage 55. In order to improve the buffering performance of the elastic buffer layer 8, the elastic buffer layer 8 is preferably made of polyurethane elastomer, which is annular and fixedly sleeved on the outer circumferential surface of the support roller 7.

[0049] To achieve automatic lubrication and maintenance of the guide spring 6, when the elastic buffer layer 8 presses against the front side of the wire carriage 55 and the fork 2 is raised, the gap between the fork 2 and the bottom of the wire carriage 55 closes, causing the support roller 7 to roll on the front side of the wire carriage 55. A detection unit 10 is provided on the support roller 7 to detect the number of rotations of the support roller 7 and output a detection signal. A controller 11, preferably a microcontroller or PLC, is coupled to the detection unit 10 to receive the detection signal and output a control signal. An oiling device responsive to the control signal is coupled to the controller 11, and a preset number of rotations threshold is provided within the controller 11. In this embodiment, when the detection unit 10 detects that the number of rotations of the support roller 7 exceeds the number of rotations threshold, it indicates that the vibration damping mechanism 3 and the guide spring 6 have reached the required number of maintenance cycles. At this time, the oiling device injects grease into the guide spring 6 to lubricate it.

[0050] Specifically, a bushing 18 for the rotating shaft 16 to rotatably pass through is fixedly provided on the outer side of the connecting seat 17. The bushing 18 extends to the outer side of the protective plate 41. A connecting base 19 for mounting the detection unit 10 is fixedly provided at the end of the bushing 18 away from the connecting seat 17. The detection unit 10 is fixed to the connecting base 19 by a second screw 43. The detection unit 10 is preferably a dynamic torque sensor, whose detection shaft is coaxially fixedly connected to the rotating shaft 16 to detect the torque change of the rotating shaft 16, thereby determining its rotation state. An avoidance groove 44 is provided on the protective plate 41 for the bushing 18 to slide through. The avoidance groove 44 is horizontal and elongated, which can ensure that the bushing 18 can move horizontally with the support roller 7.

[0051] To achieve self-lubrication and maintenance of the guide spring 6, a sealed oil injection chamber 20 is provided inside the guide rod 12 for the oil injection device to connect and inject grease. The oil injection chamber 20 is preferably cylindrical and is arranged along the length of the guide rod 12. Multiple oil outlet holes 21 connected to the oil injection chamber 20 are evenly distributed on the surface of the guide rod 12.

[0052] To enable the grease injection device to inject lubricating grease, the device includes a syringe-type grease injector 22 located outside the protective plate 41 of the shock-absorbing mechanism 3 and connected to the grease injection chamber 20, and an injection pump connected to the syringe-type grease injector 22 to drive it to inject lubricating grease into the grease injection chamber 20. The injection pump is coupled to and controlled by the controller 11. Specifically, the syringe-type grease injector 22 includes a reservoir syringe 24 for storing lubricating grease, an injection tube 25 integrally disposed at one end of the reservoir syringe 24 and connected to the inner cavity of the reservoir syringe 24, a piston 26 slidably disposed in the inner cavity of the reservoir syringe 24, an opening 27 at the other end of the reservoir syringe 24 for the piston 26 to enter and exit, and a push rod 28 fixed along the length of the reservoir syringe 24 at the end of the piston 26 away from the injection tube 25. The piston 26 is made of rubber and fits tightly against the inner wall of the reservoir syringe 24, thereby improving its sealing performance and grease injection efficiency. One end of the guide rod 12 away from the shock absorber 5 is fixed with an oil nozzle 29 connected to the oil filling chamber 20. The oil nozzle 29 is connected to the oil filling pipe 25 via an oil pipe 30. Specifically, since there are four sets of guide springs 6, there are also four guide rods 12. A lubrication distributor 45 is set between the syringe-type oil injector 22 and the oil filling chamber 20. It has an inlet pipe 46 and four outlet pipes 47 that are interconnected. The oil pipe 30 is preferably a polyurethane hose with five sections. The two ends of one section are respectively interference-fitted onto the inlet pipe 46 and the oil filling pipe 25. The two ends of the remaining oil pipe sections 30 are respectively interference-fitted onto the outlet pipe 47 and the corresponding oil nozzle 29 to achieve oil circuit connection. The oil nozzle 29 is bent outward in the horizontal direction, and the side of the base 4 is provided with a clearance channel 48 for the bent part of the oil nozzle 29 to slide through.

[0053] To enable the injection pump to push forward, the injection pump includes side plates 31 integrally mounted on both sides of the oil reservoir syringe 24, a mounting base 32 fixed to the outside of the protective plate 41, a mounting groove 33 on the side of the mounting base 32 away from the protective plate 41 for the oil reservoir syringe 24 to engage, two opposing sidewalls within the mounting groove 33 for engaging the two side plates 31 respectively, a locking plate 35 detachably connected to the mounting base 32 to prevent the side plates 31 from disengaging from the locking grooves 34, and a power source located on the outside of the shock absorption mechanism 3 to drive the push rod 28 forward. The power source is coupled to and controlled by the controller 11. The locking plate 35 is fixed to the mounting base 32 by a third screw 49, thereby enabling easy disassembly and assembly of the locking plate 35 and improving installation stability. A connecting seat 50 is fixed to the outside of the protective plate 41, and the power source is a push rod motor 36, the bottom of which is fixed to the connecting seat 50 by a fourth screw 51. The output shaft 37 of the push rod motor 36 abuts against the tail end of the push rod 28, thereby achieving stable advancement of the push rod 28.

[0054] A locking mechanism 52 and a drive mechanism 53 connected to the locking mechanism 52 are provided above the fork 2 and near the automated guided vehicle 1. The specific structure and working principle of the locking mechanism 52 and the drive mechanism 53 have been disclosed in the utility model patent with announcement number CN223254027U, and do not involve the improvement of this solution, so they will not be described in detail.

[0055] The specific working principle is as follows:

[0056] When the automated guided vehicle 1 connects to the wire carriage 55, the forks 2 are first inserted into the bottom of the wire carriage 55. To avoid scraping between the forks 2 and the bottom of the wire carriage 55, a gap needs to be left between the forks 2 and the bottom of the wire carriage 55. When the forks 2 are fully inserted into the bottom of the wire carriage 55, the shock-absorbing mechanisms 3 on both sides of the forks 2 press against the two pressing blocks 38 on the front bar of the wire carriage 55, so that the pressing blocks 38 overcome the elastic force of the guide spring 6 and drive the shock-absorbing block 5 to move backward, thereby playing a buffering role. After buffering is completed, the drive mechanism 53 drives the locking hook mechanism 52 to rotate forward, so that the locking hook mechanism 52 can hook the crossbar 54 on the front side of the wire carriage 55, thereby completing the connection between the automated guided vehicle 1 and the wire carriage 55. When the shock-absorbing mechanism 3 is buffering, since the shock-absorbing block 5 moves backward relative to the base 4, the support roller 7 on the base 4 can extend forward through the clearance groove 9 and press against the pressing block 38 through the elastic buffer layer 8, so as to reduce part of the load on the guide spring 6 in the axial direction, thereby extending the service life of the guide spring 6.

[0057] After the locking hook mechanism 52 locks the crossbar 54 of the wire carriage 55, the automatic guide carriage 1 drives the forks 2 to rise to close the gap between them and the bottom of the wire carriage 55. During this process, the support roller 7 can convert the longitudinal sliding friction between the shock absorber 5 and the pressing block 38 into rolling friction, thereby reducing the radial force on the guide spring 6, reducing the risk of bending of the guide spring 6, and further improving the service life of the guide spring 6.

[0058] During the retraction of the shock absorber 5, the bushing 18 on the connecting seat 17 can move forward relative to the shock absorber 5 along with the base 4. At this time, the clearance groove 44 on the protective plate 41 can provide movement space for the bushing 18. When the support roller 7 rotates with the lifting and lowering of the wire carriage 55, the rotating shaft 16 on the support roller 7 can rotate accordingly, so that the detection unit 10 on the bushing 18 can detect the torque transmitted by the rotating shaft 16, thereby determining that the support roller 7 has rotated and performing a count. Since the power that causes the support roller 7 to rotate comes from the longitudinal rolling friction between the fork 2 and the crossbar 54 of the wire carriage 55 when the fork 2 is lifted and lowered, and during this process, the guide spring 6 will be compressed or reset once. Therefore, the number of rotations of the support roller 7 can be proportional to the number of times the guide spring 6 is used. When the detection unit 10 detects that the number of rotations of the support roller 7 reaches the threshold number built into the controller 11, the controller 11 controls the push rod motor 36 to operate, driving the push rod 28 and piston 26 on the syringe-type oil injector 22 to move forward one unit distance, thereby injecting grease into the guide rod 12 within the four guide springs 6. During this process, the grease sequentially enters the corresponding oil injection chamber 20 through the oil injection pipe 25, oil pipe 30, inlet pipe 46 and outlet pipe 47 on the lubrication distributor 45, oil pipe 30 and grease nozzle 29, and finally seeps out to the surface of the guide rod 12 through the oil outlet hole 21. When the guide rod 12 extends or retracts, it can cooperate with the guide hole 13 for self-lubrication, further extending its service life.

[0059] Once the forks 2 have fully lifted the wire carriage 55, it can be transferred to its destination for lowering. During the lowering process, the automated guided vehicle 1 first lowers the forks 2 to bring the wire carriage 55 to the ground. Then, the drive mechanism 53 drives the locking hook mechanism 52 to rotate backward and upward to disengage from the crossbar 54 of the wire carriage 55, thereby releasing the lock between the wire carriage 55 and the forks 2. Finally, the forks 2 can be pulled out from the bottom of the wire carriage 55.

[0060] After the shock-absorbing mechanism 3 disengages from the pressing block 38 on the wire trolley 55, the shock-absorbing block 5 and the guide spring 6 are all reset, and the support roller 7 retracts into the clearance groove 9 in sync.

[0061] When the grease in the oil reservoir syringe 24 is depleted, first, control the output shaft 37 of the push rod motor 36 to retract to its final position via the controller 11, then unscrew the third screw 49 and remove the locking plate 35 from the mounting base 32. Next, remove the syringe-type oil injector 22 from the mounting base 32. At this point, first, use the push rod 28 to pull the piston 26 out of the oil reservoir syringe 24 to expose the opening 27, then fill the inner cavity of the oil reservoir syringe 24 with grease. Next, reinsert the piston 26 into the opening 27 and push the push rod 28 inward to expel the air from the oil reservoir syringe 24. Finally, snap the side plates 31 on both sides of the oil reservoir syringe 24 into the slots 34 on both sides of the mounting groove 39, and re-fix the locking plate 35 to the mounting base 32 via the third screw 49. Then, control the output shaft 37 of the push rod motor 36 to re-abut against the end of the push rod 28 via the controller 11.

[0062] The above control process can be implemented using a PLC or a microcontroller's built-in program, which is common knowledge in this field and will not be elaborated further here.

Claims

1. A device for transporting wire carriages, comprising an automated guided vehicle (AGV) (1), forks (2) disposed on the front side of the AGV (1), and shock-absorbing mechanisms (3) disposed on both sides of the forks (2), characterized in that: The shock absorption mechanism (3) includes a base (4) disposed on the fork (2), a shock absorber (5) disposed on the front side of the base (4), a guide spring (6) disposed between the shock absorber (5) and the base (4) to make the shock absorber (5) have a lateral tendency to move away from the base (4), a support roller (7) rotatably disposed on the front side of the base (4), an elastic buffer layer (8) disposed on the outer peripheral surface of the support roller (7), and a clearance groove (9) opened on the shock absorber (5) for the roller to extend laterally; when the fork (2) enters the bottom of the wire carriage (55) and the wire carriage (55) laterally squeezes the shock absorber (5) so that the shock absorber (5) overcomes the elastic force of the guide spring (6) and moves backward, the support roller (7) extends through the clearance groove (9) and the elastic buffer layer (8) presses against the front side of the wire carriage (55); When the elastic buffer layer (8) presses against the front side of the wire carriage (55) and the forks (2) are raised, the gap between the forks (2) and the bottom of the wire carriage (55) closes so that the support rollers (7) roll on the front side of the wire carriage (55); A detection unit (10) is provided on the support roller (7) for detecting the number of rotations of the support roller (7) and outputting a detection signal. A controller (11) for receiving the detection signal and outputting a control signal is coupled to the detection unit (10). An oil injection device responding to the control signal is coupled to the controller (11). A number threshold is preset in the controller (11). When the detection unit (10) detects that the number of rotations of the support roller (7) is greater than the number threshold, the oiling device injects grease into the guide spring (6) to lubricate the guide spring (6).

2. The device for transporting wire carriages according to claim 1, characterized in that: The guide spring (6) includes a guide rod (12) laterally disposed on the damping block (5), a guide hole (13) opened in the base (4) for the guide rod (12) to slide laterally through, an elastic element (14) sleeved on the guide rod (12) to generate elastic support force between the damping block (5) and the base (4), and an anti-disengagement element (15) disposed at the end of the guide rod (12) away from the damping block (5) to prevent the guide rod (12) from disengaging from the guide hole (13).

3. The device for transporting a wire car according to claim 2, characterized in that: The support roller (7) is provided with a rotating shaft (16) that rotates synchronously with the support roller (7), and the front side of the base (4) is provided with a connecting seat (17) for the rotating shaft (16) to rotate and connect.

4. The device for transporting a wire car according to claim 3, characterized in that: The connecting seat (17) is provided with a bushing (18) through which the rotating shaft (16) passes. The end of the bushing (18) away from the connecting seat (17) is provided with a connecting base (19) for the detection unit (10) to be installed. The detection unit (10) is connected to the rotating shaft (16) to detect the rotation state of the rotating shaft (16).

5. The device for transporting a wire car according to claim 2, characterized in that: The guide rod (12) has a sealed oil injection chamber (20) for the oil injection device to dock and inject grease. The surface of the guide rod (12) has oil outlet holes (21) that are connected to the oil injection chamber (20).

6. The device for transporting a wire car according to claim 5, characterized in that: The oil injection device includes a syringe-type oil injector (22) disposed on the shock absorption mechanism (3) and connected to the oil injection chamber (20) and an injection pump connected to the syringe-type oil injector (22) to drive the syringe-type oil injector (22) to inject grease into the oil injection chamber (20). The injection pump is coupled to and controlled by a controller (11).

7. The device for transporting a wire car according to claim 6, characterized in that: The syringe-type grease injector (22) includes a reservoir syringe (24) for storing grease, a grease injection tube (25) located at one end of the reservoir syringe (24), a piston (26) slidably disposed in the inner cavity of the reservoir syringe (24), an opening (27) opened at the other end of the reservoir syringe (24) for the piston (26) to enter and exit, and a push rod (28) located at the end of the piston (26) away from the grease injection tube (25).

8. The device for transporting a wire car according to claim 7, characterized in that: The end of the guide rod (12) away from the damping block (5) is provided with an oil nozzle (29) connected to the oil injection chamber (20), and the oil nozzle (29) is connected to the oil injection pipe (25) through the oil pipe (30).

9. The device for transporting a wire car according to claim 7, characterized in that: The injection pump includes side plates (31) on both sides of the oil reservoir syringe (24), a mounting base (32) on the outside of the shock absorption mechanism (3), a mounting groove (33) on the side of the mounting base (32) for the oil reservoir syringe (24) to be engaged, two opposing side walls in the mounting groove (33) for the two side plates (31) to be engaged respectively, a locking plate (35) detachably connected to the mounting base (32) to prevent the side plates (31) from disengaging from the locking grooves (34), and a power source on the outside of the shock absorption mechanism (3) to drive the push rod (28) forward. The power source is coupled to and controlled by the controller (11).

10. The device for transporting a wire car according to claim 9, characterized in that: The power source is a push rod motor (36), whose output shaft (37) is connected to the tail end of the push rod (28).

11. The device for transporting a wire car according to claim 1, characterized in that: The front side of the wire car (55) is provided with a compression block (38) for transverse compression shock absorber (5).

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