A kind of overhead rail conveying system and transfer method thereof

Abstract

The present invention provides an overhead rail conveying system and a transfer method thereof, wherein the transfer device comprises an overhead rail, a mobile trolley located on the overhead rail, a material storage device, a trigger device and a locking device located on the mobile trolley, wherein the material storage device is positioned and connected to the mobile trolley, and the locking device comprises a swing rod assembly, wherein the swing rod assembly is rotatably connected to the mobile trolley, and the swing rod assembly has a blocking position and an opening position, and when in the blocking position, the swing rod assembly presses down the material storage device, thereby locking the material storage device and the mobile trolley; the trigger device is fixed on the overhead rail, and when the mobile trolley moves to the point where the swing rod assembly and the trigger device push against each other, the trigger device can push the swing rod assembly to swing, thereby placing the swing rod assembly in the opening position, and when in the opening position, the swing rod assembly is separated from the material storage device, and the material storage device can be unloaded from the mobile trolley. The hanging rack can be prevented from falling off the overhead rail, and the loading and unloading of the hanging rack from the overhead rail is facilitated, thereby saving ground space.

Description

Technical Field

[0001] The present invention relates to the technical field of warehousing logistics, and in particular to an overhead rail conveying system and a transfer method thereof. Background Art

[0002] With the development of science and technology and the progress of the industrial field, automated production lines and automated logistics transfer systems have been widely used in modern factories.

[0003] Overhead rail conveyor systems are popular because they occupy little ground space and the conveyor tracks can be flexibly installed. Take the EMS system as an example. It includes overhead rails and mobile carts, and the mobile cart can move along the overhead rails. Material storage devices (such as racks, pallets, etc.) that can hold goods are hung on the mobile cart. Usually, when the goods are moved to the shelf station with the material storage device, the goods are taken out of the material storage device by manual or mechanical equipment and stored in the shelf. However, in order to improve the efficiency of cargo transportation and reduce the process of cargo transfer, the goods are now mostly unloaded from the mobile cart at the shelf station together with the material storage device and stored together in the shelf.

[0004] However, when the material storage device moves with the mobile trolley on the overhead track, or when the material storage device reaches the loading and unloading station with the mobile trolley, there is a risk of falling off, posing a safety hazard.

[0005] Therefore, there is an urgent need for an overhead rail transportation system to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide an overhead rail conveying system and a transfer method thereof, so as to solve the technical problem in the prior art that the material storage device has the risk of falling off when the material storage device moves with the mobile trolley on the overhead rail or when the material storage device reaches the loading and unloading station with the mobile trolley. The various technical effects that can be produced by the preferred technical solution among the various technical solutions provided by the present invention are described in detail below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides an overhead rail conveying system, comprising an overhead rail track, a moving trolley located on the overhead rail track, a material storage device, a trigger device and a locking device located on the moving trolley, wherein:

[0009] The material storage device is positioned and connected to the mobile trolley, and the locking device includes a swing rod assembly, which is rotatably connected to the mobile trolley. The swing rod assembly has a blocking position and an opening position. When in the blocking position, the swing rod assembly presses down the material storage device, thereby locking the material storage device and the mobile trolley;

[0010] The trigger device is fixed on the overhead rail. When the mobile cart moves to the point where the rocker arm assembly pushes against the trigger device, the trigger device can push the rocker arm assembly to swing, thereby causing the rocker arm assembly to be in the open position. When in the open position, the rocker arm assembly is separated from the material storage device, and the material storage device can be unloaded from the mobile cart.

[0011] Preferably, the locking device includes a limit self-locking portion, which is fixed on the mobile trolley. When in the blocking position, the rocker arm assembly can use gravity to press down the material storage device in a naturally hanging state, and the limit self-locking portion abuts against the rocker arm assembly, thereby limiting the swing of the rocker arm assembly and causing the rocker arm assembly to self-lock.

[0012] Preferably, the rocker assembly comprises a first connecting rod and a second connecting rod, wherein:

[0013] The first connecting rod is fixedly connected to the second connecting rod, and the connecting part between the first connecting rod and the second connecting rod is rotatably connected to the moving trolley through a first rotating shaft. The free end of the first connecting rod can be pressed against the material storage device under the action of gravity, and the other end of the second connecting rod can move along the trigger device, so that the first connecting rod is rotated to a position away from the material storage device.

[0014] Preferably, the material storage device is provided with a hanging ear, and the mobile trolley is provided with a positioning piece, and the positioning piece passes through a positioning hole on the hanging ear, so that the material storage device is hung on the mobile trolley;

[0015] The rotation radius of the first connecting rod is greater than a first horizontal distance a from the first rotating shaft to the minimum spacing of the hanging ear, and is smaller than a second horizontal distance b from the first rotating shaft to the minimum spacing of the positioning member;

[0016] The acute angle between the line connecting the minimum spacing from the first rotating shaft to the hanging ear and the vertical line is α, and the acute angle between the line connecting the minimum spacing from the first rotating shaft to the positioning member and the vertical line is γ. When the locking device is in the blocking position, the limit self-locking portion abuts against the second connecting rod, and the angle between the axis of the first connecting rod and the vertical line is β, and α<β<γ.

[0017] Preferably, the swing rod assembly includes a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are both rotatably connected to the moving trolley, wherein:

[0018] The upper ends of the first connecting rod and the second connecting rod are meshed with each other through gears, the free end of the first connecting rod can be pressed against the material storage device under the action of gravity, and the other end of the second connecting rod can move along the trigger device, so that the first connecting rod rotates to a position away from the material storage device;

[0019] When the locking device is in the blocking position, the limit self-locking portion abuts against the side of the first connecting rod facing the second connecting rod, the axis of the first connecting rod is inclined toward the side of the second connecting rod, and the angle δ between the axis of the first connecting rod and the vertical line is in the range of: 5°<δ<15°.

[0020] Preferably, the trigger device has a guide surface, and the guide surface is inclined relative to the horizontal plane; the swing arm assembly includes a guide wheel, and the guide wheel is rotatably connected to the lower end of the second connecting rod, and the guide wheel can roll and rise along the guide surface, thereby driving the swing arm assembly to rotate and disengage from the material storage device;

[0021] The trigger device comprises a tripod, and the guide surfaces are located at two opposite sides of the tripod.

[0022] Preferably, the swing arm assembly comprises a swing arm, a second rotating shaft and a torsion spring, wherein:

[0023] The second rotating shaft is fixed on the moving trolley, the torsion spring is sleeved on the second rotating shaft, the torsion spring is connected to the swing rod, and when in the blocking position, the swing rod is pressed down on the hanging ear of the material storage device;

[0024] The trigger device includes a vertical rod. When the mobile trolley moves to a position where the swing rod and the vertical rod push each other, the vertical rod pushes the swing rod to rotate in a horizontal plane, thereby separating from the material storage device.

[0025] Preferably, the overhead rail conveying system further comprises an upper clamping mechanism, and the upper clamping mechanism comprises a first swing arm and a second swing arm, wherein:

[0026] The first swing arm and the second swing arm are respectively located at opposite sides of the overhead rail, and the first swing arm and the second swing arm can rotate or move horizontally in a horizontal plane under the drive of a corresponding driving device, so that the material storage device is clamped by opposite sides thereof, so that the material storage device is positioned and connected with the mobile trolley;

[0027] The overhead rail conveying system further includes a shuttle vehicle for conveying the material storage device between the three-dimensional warehouse and the overhead rail, wherein the shuttle vehicle has a lifting assembly, and the lifting assembly can lift and support the material storage device when the swing arm assembly is separated from the material storage device, thereby separating the material storage device from the mobile vehicle;

[0028] The overhead rail conveying system further comprises a lower clamping mechanism, which comprises a telescopic driving device, a first rod body, and a second rod body, wherein:

[0029] One end of the first rod body and the second rod body are fixedly connected to the telescopic end of the telescopic driving device, and the other end of the first rod body and the second rod body are fixed with claws, and the claws are rotatably connected to the frame of the shuttle vehicle; the telescopic driving device can drive the first rod body and the second rod body to rotate, so that the two claws rotate and clamp or release the material storage device, so as to facilitate the positioning of the material storage device on the lifting assembly.

[0030] Preferably, the lifting assembly includes a lifting drive device and a positioning plate, wherein: the lifting drive device is movably arranged along the length direction of the shuttle vehicle, the positioning plate is fixed to the telescopic end of the lifting drive device, and a positioning groove is arranged on the positioning plate, and the material storage device can be limitedly located in the positioning groove;

[0031] The overhead rail conveying system also includes a stacker, and the shuttle vehicles include an inbound shuttle vehicle and an outbound shuttle vehicle. The stacker is used to transfer the material storage device from the inbound shuttle vehicle to the three-dimensional warehouse, or to transfer the material storage device from the three-dimensional warehouse to the outbound shuttle vehicle.

[0032] The present invention also provides a transfer method based on an overhead rail conveying system, using the above-mentioned overhead rail conveying system, the overhead rail conveying system also includes a shuttle vehicle for transporting the material storage device between the stereoscopic warehouse and the overhead rail track, the shuttle vehicle has a lifting assembly, and the lifting assembly can lift and hold the material storage device when the swing arm assembly is separated from the material storage device, thereby separating the material storage device from the material storage device;

[0033] The method includes:

[0034] When entering the warehouse: the material storage device is positioned and connected to the mobile trolley, so that the swing arm assembly is in a naturally hanging state, and the material storage device is pressed down by gravity to lock the material storage device and the mobile trolley;

[0035] The swing arm assembly is moved along with the moving trolley until it contacts the trigger device, and the swing arm assembly swings under the guidance of the trigger device and separates from the material storage device;

[0036] The lifting assembly is caused to lift and support the material storage device, and the material storage device is separated from the mobile vehicle;

[0037] The lifting assembly descends to drive the material storage device to be removed from the mobile vehicle, and the material storage device is transferred to the stereoscopic warehouse by using the shuttle vehicle;

[0038] When leaving the warehouse: transferring the material storage device from the three-dimensional warehouse to the lifting assembly of the shuttle vehicle;

[0039] After the lifting assembly moves to the lower side of the corresponding moving trolley, the lifting assembly is made to lift and hold the material storage device, so as to position and connect the material storage device with the moving trolley;

[0040] The swing arm assembly is placed in a naturally hanging state, and gravity is used to press down the material storage device to lock the material storage device and the mobile trolley.

[0041] Compared with the prior art, the overhead rail conveying system and transfer method provided by the present invention have the following beneficial effects: placing goods on a material storage device, so that the material storage device is positioned and connected with the mobile trolley on the overhead rail track, and the material storage device is conveyed above the ground by the overhead rail track, without occupying too much ground position; when the material storage device is conveyed on the overhead rail track, the swing arm assembly uses gravity to press down the material storage device, thereby locking the material storage device and the mobile trolley to prevent the material storage device from shaking and falling, thereby ensuring transportation safety; and when the material storage device is conveyed to above the target position, the swing arm assembly swings under the guidance of the trigger device, the swing arm assembly separates from the material storage device, the material storage device and the mobile trolley are no longer locked, the swing arm assembly does not affect the separation of the material storage device from the mobile trolley, and the material storage device is unloaded, thereby realizing the warehousing of the material storage device, and the reverse process of the warehousing out is possible.

[0042] The overhead rail conveying system and the transfer method thereof can prevent the hanging rack from falling from the overhead rail track, facilitate the loading and unloading of the hanging rack from the overhead rail track, and will not occupy too much ground area. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 It is a schematic diagram of the overall layout structure of the EMS inbound and outbound transfer device;

[0045] Figure 2 It is a schematic diagram of the layout structure of the Skyrail track, the incoming shuttle vehicle, and the outgoing shuttle vehicle;

[0046] Figure 3 It is a schematic diagram of the coordination structure of the hook frame and the hanging frame;

[0047] Figure 4 It is a schematic diagram of the structure of the first embodiment of the swing arm assembly locking the hanger on the hook frame;

[0048] Figure 5 It is a structural schematic diagram of the first embodiment of the swing rod assembly cooperating with the trigger device;

[0049] Figure 6 It is a schematic diagram of the structure of the inbound shuttle bus, outbound shuttle bus, rack and overhead rail;

[0050] Figure 7 It is a structural schematic diagram of the lower clamping mechanism clamping the rack;

[0051] Figure 8 is a schematic diagram of the structure of the lower clamping mechanism releasing the hanger;

[0052] Fig. 9 It is a top view of the overall structure of the rack entering and exiting the warehouse;

[0053] Fig.10 2. It is a schematic structural diagram of the self-locking of the first embodiment of the swing rod assembly when it is in the blocking position;

[0054] Fig.11 is a structural schematic diagram of the second embodiment of the swing rod assembly in a blocking position;

[0055] Fig.12 is a schematic structural diagram of the second embodiment of the swing lever assembly in the open position;

[0056] Fig.13 is a structural schematic diagram of the third embodiment of the swing arm assembly in a blocking position;

[0057] Fig.14 is a schematic diagram of a third embodiment of a rocker assembly and when in an open position;

[0058] Fig.15 It is a structural schematic diagram of the third embodiment of the rocker assembly being separated from the trigger device and restoring the blocking position.

[0059] In the figure, 100, overhead rail; 200, stacker; 300, stereoscopic warehouse; 1, hanger; 11, positioning hole; 12, hanging ear; 2, hook rack; 21, positioning piece; 3, swing rod assembly; 31, first connecting rod; 32, second connecting rod; 33, guide wheel; 34, limit self-locking part; 35, first rotating shaft; 36, gear; 37, swing rod; 38, second rotating shaft; 39, torsion spring; 4, shuttle car; 41, entry Depot shuttle bus; 42, outbound shuttle bus; 5, upper clamping mechanism; 51, first swing arm; 52, second swing arm; 53, roller; 54, driving device; 6, lower clamping mechanism; 61, telescopic driving device; 62, first rod body; 63, second rod body; 64, claw; 7, lifting assembly; 71, lifting driving device; 72, positioning plate; 73, positioning groove; 8, trigger device; 81, guide surface; 82, column. DETAILED DESCRIPTION

[0060] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0061] In the description of the present invention, it should be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0062] The embodiment of the present invention provides an overhead rail conveying system and a transfer method thereof, which can prevent a hanger from falling from the overhead rail track, facilitate the loading and unloading of the hanger from the overhead rail track, and will not occupy too much ground area.

[0063] Combine the following Figure 1-Figure 9 The technical solution provided by the present invention is described in more detail.

[0064] The overhead rail conveying system of this embodiment includes an overhead rail track, a moving trolley located on the overhead rail track, a material storage device, a trigger device and a locking device located on the moving trolley, wherein:

[0065] The material storage device is positioned and connected to the mobile trolley, and the locking device includes a swing rod assembly, which is rotatably connected to the mobile trolley. The swing rod assembly has a blocking position and an opening position. When in the blocking position, the swing rod assembly presses down the material storage device, thereby locking the material storage device and the mobile trolley;

[0066] The trigger device is fixed on the overhead track. When the mobile trolley moves to the point where the swing arm assembly pushes against the trigger device, the trigger device can push the swing arm assembly to swing, thereby placing the swing arm assembly in the open position. When in the open position, the swing arm assembly is separated from the material storage device, and the material storage device can be unloaded from the mobile trolley.

[0067] Specifically, the trigger device can drive the swing rod assembly to swing in a vertical plane or a horizontal plane.

[0068] Three implementations of the swing arm assembly are provided below:

[0069] Embodiment 1:

[0070] See also Figure 1-Figure 9 As shown, the overhead rail conveying system provided by the present invention includes a material storage device, a rocker arm assembly 3, a trigger device 8, a shuttle car 4 and a mobile trolley running on the overhead rail track 100, and a hook frame 2 is arranged on the mobile trolley. The material storage device in this embodiment includes a hanging frame 1, and of course other structures can also be adopted, wherein: the hanging frame 1 is positioned and connected to the hook frame 2, the rocker arm assembly 3 is rotatably connected to the mobile trolley, and the rocker arm assembly 3 can use gravity to press down the hanging frame 1 in a natural hanging state, thereby locking the hanging frame 1 and the hook frame 2; the trigger device 8 is located above the corresponding shuttle car 4, and when the rocker arm assembly 3 moves with the hook frame 2 to contact with the trigger device 8, it can swing under the guidance of the trigger device 8 and separate from the hanging frame 1; the shuttle car 4 has a lifting assembly 7, and the lifting assembly 7 can lift and support the hanging frame 1 when the rocker arm assembly 3 is separated from the hanging frame 1, thereby separating the hanging frame 1 from the hook frame 2.

[0071] Among them, the hook frame 2 is a part of the mobile trolley, which is used to position and connect with the bracket 1. The EMS electric monorail self-propelled trolley is an intelligent conveying equipment suitable for flexible automated production. It is mainly composed of a suspension (column) steel structure, a running track, a power supply system (contact power supply or contactless power supply), a loading trolley, a turnout, non-standard customized slings and an electrical control system. It is an intelligent conveying equipment suitable for flexible automated production, with the characteristics of stable operation, intelligent control, flexible spatial layout, low noise, and no pollution. The mobile trolley travels along the overhead rail track 100, which is an existing mature technology, and its structure will not be described here.

[0072] The overhead rail conveying system of this embodiment places the goods on the hanger 1, so that the hanger 1 is positioned and connected with the hook frame 2 on the overhead rail track 100, and the hanger 1 is conveyed above the ground by the overhead rail track 100 without occupying too much ground space; when the hanger 1 is conveyed on the overhead rail track 100, the swing arm assembly 3 uses gravity to press down the hanger 1, thereby locking the hanger 1 and the hook frame 2 to prevent the hanger 1 from shaking and falling, thereby ensuring the safety of transportation; and when the hanger 1 is conveyed to the top of the corresponding shuttle vehicle 4, the swing arm assembly 3 swings under the guidance of the trigger device 8, the swing arm assembly 3 is separated from the hanger 1, the hanger 1 and the hook frame 2 are no longer locked, the swing arm assembly 3 does not affect the separation of the hanger 1 and the hook frame 2, and the lifting assembly 7 separates the hanger 1 from the hook frame 2 to place the hanger 1 on the shuttle vehicle 4, thereby realizing the warehousing of the hanger 1, and the out-of-warehouse process is vice versa.

[0073] The device can prevent the hanger 1 from falling from the ceiling rail 100, facilitates the loading and unloading of the hanger 1 from the ceiling rail 100, and does not occupy too much ground area.

[0074] As an alternative embodiment, see Figure 3 and Figure 4 As shown, the rocker assembly 3 of this embodiment includes a first link 31, a second link 32 and a guide wheel 33, wherein: the first link 31 is fixedly connected to the second link 32, and there is a non-zero angle between the two, the connecting portion of the first link 31 and the second link 32 is rotatably connected to the hook frame 2 through a rotating shaft, the free end of the first link 31 can be pressed onto the hanger 1, the other end of the second link 32 is rotatably connected to the guide wheel 33, and the guide wheel 33 can move along the trigger device 8, thereby rotating the first link 31 to a position that is detached from the hanger 1.

[0075] See also Figure 4 As shown, the end of the first connecting rod 31 presses down the hanging ear 12, and the guide wheel 33 is located at the end of the second connecting rod 32. Before the guide wheel 33 contacts the trigger device 8, the rocker assembly 3 is in a naturally hanging state, and the lower end of the first connecting rod 31 presses the hanging ear 12 under the action of gravity to prevent the hanging ear 12 from detaching from the positioning member due to shaking, causing the hanger 1 to fall off.

[0076] See also Figure 5 As shown, when the guide wheel 33 contacts the trigger device 8, as the hook frame 2 moves along the overhead rail track 100, the guide wheel 33 moves up along the guide surface 81, driving the swing arm assembly 3 to swing as a whole, and the first connecting rod 31 disengages from the hook ear 12. In this arrangement, the hanger 1 can be detached from the hook frame 2 under the support of the lifting assembly 7.

[0077] It should be understood that, no matter the hanger 1 is entering or leaving the warehouse, the above-mentioned cooperation between the swing arm assembly 3 and the trigger device 8 is required to achieve the positioning connection or separation between the hanger 1 and the hook frame 2.

[0078] As an alternative embodiment, see Figure 3 and Figure 4 As shown, a positioning member 21 is provided on the hook frame 2, a hanging ear 12 is provided on the hanging ear 12, a positioning hole 11 is provided on the hanging ear 12, and the positioning member 21 passes through the positioning hole 11, so as to connect the hanging frame 1 to the hook frame 2; the rocker assembly 3 can be pressed against the hanging ear 12 under the action of gravity.

[0079] The positioning member may be a positioning pin. When the positioning pin passes through the positioning hole 11, the hanger 1 can be positioned and connected to the hook frame 2. Figure 4 As shown, the swing arm assembly 3 uses gravity to press down the hanger 1 when it is in a naturally hanging state, thereby locking the hanger 1 and the hook frame 2. In this way, even if the hanger 1 shakes to a certain extent, due to the downward pressure of the swing arm assembly 3, the hanger 1 will not separate from the hook frame 2, and the hanger 1 can carry goods (such as silk cakes, etc.) on the overhead rail track 100 for stable transportation.

[0080] The locking device of this embodiment also includes a limit self-locking part. The limit self-locking part 34 is fixed on the mobile trolley. When it is in the blocking position, the rocker arm assembly 3 can use gravity to press down the material storage device in a natural hanging state. The limit self-locking part 34 abuts against the rocker arm assembly 3, thereby limiting the swing of the rocker arm assembly 3, and then making the rocker arm assembly 3 self-locking.

[0081] The locking device of this embodiment has a self-locking function. Through the limited self-locking portion, before the swing arm assembly abuts against the trigger device, the swing arm assembly will not be separated from the hanger even if the hanger is subjected to an upward external force.

[0082] See also Fig.10 As shown, Fig.10 The rocker assembly 3 is in a self-locking state.

[0083] See also Fig.10 As shown, the rotation radius of the first connecting rod 31 is greater than the first horizontal distance a of the minimum spacing from the first rotating shaft 35 to the hanging ear 12, and is smaller than the second horizontal distance b of the minimum spacing from the first rotating shaft 35 to the positioning member 21; the acute angle between the line connecting the minimum spacing from the first rotating shaft 35 to the hanging ear 12 and the vertical line is α, and the acute angle between the line connecting the minimum spacing from the first rotating shaft 35 to the positioning member 21 and the vertical line is γ. When the locking device is in the blocking position, the limit self-locking portion 34 abuts against the second connecting rod 32, and the angle between the axis of the first connecting rod 31 and the vertical line is β, and α<β<γ.

[0084] Through the cooperation between the limit self-locking part 34 and the above-mentioned angle, before the rocker arm assembly 3 abuts against the trigger device, through the abutment of the limit self-locking part 34 and the limitation of the above-mentioned angle, even if the hanger is subjected to an upward external force, the first connecting rod 21 will not swing, the rocker arm assembly 3 will not be separated from the hanging ear 12 of the hanger 1, and the rocker arm assembly 3 can achieve self-locking, thereby improving the stability of the structure and further preventing the hanger 1 from being separated from the moving trolley.

[0085] The structure of the trigger device 8 in this embodiment is:

[0086] See also Figure 5 and Figure 6 As shown, the trigger device 8 of this embodiment has a guide surface 81, which is inclined relative to the horizontal plane; the rocker assembly 3 includes a guide wheel 33, which can roll and rise along the guide surface 81, thereby driving the rocker assembly 3 to rotate and disengage from the bracket 1.

[0087] The trigger device 8 of this embodiment is located above the shuttle bus 4. Specifically, the trigger device 8 is provided directly above the incoming shuttle bus 41 and the outgoing shuttle bus 42. When the hanger 1 moves along the ceiling track 100 to the top of the incoming shuttle bus 41 under the support of the hook frame 2, Figure 5 and Figure 6 As shown, the guide wheel 33 of the rocker arm assembly 3 rises along the guide surface 81, and as the guide wheel 33 rises, the rocker arm assembly 3 is driven to swing as a whole, and the rocker arm assembly 3 rotates to disengage from the hanger 1. The rocker arm assembly 3 cannot continue to press down the ear 12 of the hook frame, and the lifting assembly 7 lifts and holds the hanger 1, and the hanger 1 is detached from the positioning piece. The lifting assembly 7 moves horizontally until the ear 12 of the hanger 1 is detached from the hook frame 2, and the lifting assembly 7 descends, thereby realizing the transportation of the hanger 1 along the length direction of the incoming shuttle vehicle 41.

[0088] As an alternative embodiment, see Figure 5 The trigger device 8 comprises a tripod, and the guide surfaces 81 are located on two opposite sides of the tripod.

[0089] The two opposite sides of the tripod are guide surfaces 81. With such an arrangement, when the hook frame 2 reciprocates along the direction of the overhead rail track 100, the swing arm assembly 3 can be in contact with the trigger device 8, and the swing arm assembly 3 can swing, thereby contacting the downward pressure on the hanger 1.

[0090] Embodiment 2:

[0091] See also Fig.11 and Fig.12 As shown, the difference between this embodiment and embodiment 1 is that:

[0092] The rocker assembly includes a first link 31 and a second link 32, and the first link 31 and the second link 32 are both rotatably connected to the moving trolley, wherein: the upper ends of the first link 31 and the second link 32 are meshed with each other through a gear 36, and the free end of the first link 31 can be pressed against the hanging ear 12 of the material storage device under the action of gravity, and the other end of the second link 32 can move along the trigger device, so that the first link 31 is rotated to a position away from the material storage device.

[0093] When the locking device is in the blocking position, the limit self-locking portion 34 abuts against the side of the first connecting rod 31 facing the second connecting rod 32, the axis of the first connecting rod 31 is inclined toward the side of the second connecting rod 32, and the angle δ between the axis of the first connecting rod 31 and the vertical line is in the range of: 5°<δ<15°.

[0094] See also Fig.11 and Fig.12 As shown, Fig.12 The rocker assembly is in the open position under the push of the trigger device. Fig.11 It is the state when the rocker assembly is in the blocking position.

[0095] Fig.11 In the embodiment, through the cooperation between the limit self-locking part 34 and the above-mentioned rocker assembly 3, before the rocker assembly 3 abuts against the trigger device, through the abutting effect of the limit self-locking part 34 and the structure of the above-mentioned rocker assembly 3, even if the hanger is subjected to an upward external force, the first connecting rod 21 will not swing, the rocker assembly 3 will not be separated from the hanging ear 12 of the hanger 1, and the rocker assembly 3 can achieve self-locking, thereby improving the stability of the structure and further preventing the hanger 1 from being separated from the moving trolley.

[0096] The locking device of Example 1 and Example 2 includes a rocker assembly 3 and a limit self-locking portion 34. The rocker assembly 3 rotates in a vertical plane under the push of the trigger device, and the self-locking of the rocker assembly is achieved through the structure of the limit self-locking portion 34 and the rocker assembly 3.

[0097] Embodiment 3:

[0098] See also Figure 13-Figure 15 As shown, the swing arm assembly of this embodiment rotates in a horizontal plane under the push of the trigger device, and has a self-locking function without a limit self-locking part, to prevent the bracket 1 from being shaken or falling off by external force before the swing arm assembly contacts the trigger device.

[0099] See also Figure 13-Figure 15As shown, the swing arm assembly of this embodiment includes a swing arm 37, a second rotating shaft 38 and a torsion spring 39, wherein: the second rotating shaft 38 is fixed on the moving trolley, the torsion spring 39 is sleeved on the second rotating shaft 38, the torsion spring 39 is connected to the swing arm 37, and when it is in the blocking position, the swing arm 37 is pressed down on the hanging ear 12 of the material storage device; the trigger device includes a vertical rod 82, and when the moving trolley moves to the position where the swing arm 37 and the vertical rod 82 are pushed against each other, the vertical rod 82 pushes the swing arm 37 to rotate in the horizontal plane, thereby disengaging from the material storage device (hanging rack 1).

[0100] See also Figure 13-Figure 15 As shown, the arrow direction in the figure indicates the moving direction of the mobile trolley. The swing arm assembly in this embodiment can achieve self-locking. Before the swing arm assembly 3 abuts against the column 82, through the structure of the swing arm assembly 3, even if the hanger is subjected to an upward external force, the swing rod 37 presses down the hanging ear 12, and the swing rod will not be separated from the hanging ear 12. The swing arm assembly 3 can achieve self-locking, improve the stability of the structure, and further prevent the hanger 1 from being separated from the mobile trolley.

[0101] Embodiment 4:

[0102] The overhead rail conveying system of this embodiment also includes a stacker 200, such as Fig. 9 As shown, the shuttle vehicles 4 include an inbound shuttle vehicle 41 and an outbound shuttle vehicle 42 , and the stacker 200 is used to transfer the rack 1 from the inbound shuttle vehicle 41 to the stereoscopic warehouse 300 , or to transfer the rack 1 from the stereoscopic warehouse 300 to the outbound shuttle vehicle 42 .

[0103] One end of the shuttle bus 4 is located below the overhead track 100. Figure 1 and Fig. 9 As shown, the inbound shuttle 41 transfers the goods from the overhead rail 100 to the stacker 200, thereby realizing the inbound, and the outbound shuttle 42 transfers the goods from the stacker 200 to the overhead rail 100, thereby realizing the outbound. The action of placing the rack 1 in the three-dimensional warehouse 300 and the action of taking the rack 1 out of the three-dimensional warehouse 300 are both realized by the stacker 200 traveling in the lane.

[0104] See also Fig. 9 As shown, the structures of the incoming shuttle vehicle 41 and the outgoing shuttle vehicle 42 are the same, and both include a conveying part for conveying the hanger 1. The conveying part can be a conveyor belt, and the conveyor belt can be moved by the direction of the motor and the pulley. Specifically, the conveyor belt is fixedly connected to the lifting assembly 7, and the movement of the conveyor belt drives the lifting assembly 7 to move horizontally along the length direction of the shuttle vehicle 4.

[0105] As an optional implementation, the overhead rail conveying system of this embodiment further includes an upper clamping mechanism 5, such as Figure 5As shown, the upper clamping mechanism 5 includes a first swing arm 51 and a second swing arm 52, wherein: the first swing arm 51 and the second swing arm 52 are respectively located on opposite sides of the overhead rail track 100, and the first swing arm 51 and the second swing arm 52 can rotate in a horizontal plane under the drive of the corresponding driving device 54, so that the hanger 1 is clamped by the opposite sides thereof, so that the hanger 1 is positioned and connected with the hook frame 2.

[0106] The clamping ends of the first swing arm 51 and the second swing arm 52 are both rotatably connected to rollers 53. The driving device 54 is fixed to the ceiling rail 100 through a vertical rod. The driving device 54 can be a rotating motor, a rotating cylinder, etc. The driving device can drive the corresponding first swing arm 51 or the second swing arm 52 to swing in a horizontal plane, so that the rollers 53 at the ends of the first swing arm 51 and the second swing arm 52 clamp the hook 12.

[0107] The upper clamping mechanism 5 is used in the process of goods leaving the warehouse. The lifting assembly 7 lifts the hanger 1 to the top of the positioning member 21. At this time, the upper clamping mechanism 5 works, and the first swing arm 51 and the second swing arm 52 can rotate in the horizontal plane under the drive of the corresponding driving device 54, so that the hanger 1 is clamped by the opposite sides, and the positioning hole 11 on the hanging ear is aligned with the positioning member 21 of the hook frame 2, so that the hanger 1 is accurately positioned and connected to the hook frame 2.

[0108] As an alternative embodiment, see Figure 7 and Figure 8 As shown, the overhead rail conveying system also includes a lower clamping mechanism, which includes a telescopic driving device 61, a first rod body 62, and a second rod body 63, wherein: one end of the first rod body 62 and the second rod body 63 are both fixedly connected to the telescopic end of the telescopic driving device 61, and the other ends of the first rod body 62 and the second rod body 63 are fixed with claws 64, and the claws 64 are rotatably connected to the frame of the shuttle vehicle 4; the telescopic driving device 61 can drive the first rod body 62 and the second rod body 63 to rotate, so that the two claws 64 rotate and clamp or release the hanger 1, so as to facilitate the positioning of the hanger 1 on the lifting assembly 7.

[0109] Alternatively, the telescopic drive device 61 drives the first rod 62 and the second rod 63 to move horizontally (not shown in the figure), or one of the first rod and the second rod rotates and the other moves horizontally (not shown in the figure), so that the two claws 64 clamp or release the hanger 1, making it easier to position the hanger 1 on the lifting assembly 7.

[0110] See also Figure 7 and Figure 8 As shown, the telescopic driving device 61 can realize the opening or closing of the two claws 64 through the first rod body 62 and the second rod body 63, so that the two claws 64 release or clamp the hanger 1.

[0111] The lower clamping mechanism is used in the process of cargo storage. The lower clamping mechanism is located at both ends of the shuttle 4. When the hook frame 2 carries the hanger 1 loaded with cargo and moves to the storage shuttle 41, the lifting assembly 7 moves to the end of the storage shuttle 41 located below the ceiling rail 100, the claw 64 rotates and clamps the hanger 1, and then the lifting assembly 7 rises to receive the positioned hanger 1. The lower clamping mechanism facilitates the positioning of the hanger 1 on the lifting assembly 7.

[0112] As an alternative embodiment, see Figure 7 and Figure 8 As shown, the lifting assembly 7 includes a lifting drive device 71 and a positioning plate 72, wherein: the lifting drive device 71 can be a telescopic cylinder, the telescopic cylinder is vertically arranged, and its telescopic end is located at the upper end, the lifting drive device 71 is movably arranged along the length direction of the shuttle vehicle 4, the positioning plate 72 is fixed to the telescopic end of the lifting drive device 71, and a positioning groove 73 is provided on the positioning plate 72, and the hanger 1 can be limited to be located in the positioning groove 73.

[0113] Specifically, the lower clamping mechanism facilitates accurate positioning of the hanger 1 in the positioning groove 73. The lifting assembly 7 of this structure can facilitate positioning of the hanger 1 and prevent the hanger 1 from falling from the lifting assembly 7.

[0114] The specific working process of the overhead rail conveying system of this embodiment is as follows:

[0115] The hanger 1 with the silk cake is transported by a mobile trolley (such as an EMS trolley), that is, the hook frame 2 drives the hanger 1 to move along the overhead rail track 100. When it reaches the end position of the three-dimensional warehouse 300, that is, when it reaches above the storage shuttle vehicle 41, the guide wheel 33 of the swing arm assembly 3 rises along the guide surface 81 of the trigger device 8, and the swing arm assembly 3 swings as a whole. The swing arm assembly 3 no longer presses down the hanging ear 12 of the hanger 1, and the lifting assembly 7 located under the trolley drives the positioning plate 72 to rise, and the lower clamping mechanism located under the overhead rail track 100 is positioned.

[0116] At this time, the lifting assembly 7 of the warehouse shuttle 41 at the warehouse end moves to the bottom of the overhead rail 100, and the lifting assembly 7 holds the lower part of the hanger 1, and the bottom of the hanger 1 falls into the positioning groove 73 of the warehouse shuttle 41, and then continues to lift. Until the hanger 1 is completely separated from the hook frame 2. After separation, the lifting assembly 7 of the warehouse shuttle 41 carries the hanger 1 and moves horizontally, and completely moves the hanger 1 out of the range of the overhead rail 100. The hanger 1 is transported to the warehouse waiting station.

[0117] The fork of the stacker 200 takes the rack 1 located at the storage waiting position and stacks it in the three-dimensional warehouse 300.

[0118] When the stacker 200 receives the outbound instruction, it forks the rack 1 that needs to be outbound and places it on the outbound waiting position of the shuttle vehicle 4 at the outbound end.

[0119] The outbound shuttle vehicle 42 moves to the bottom of the hanger 1, and the lifting mechanism lifts up the hanger 1, and then moves horizontally.

[0120] At this time, the hook frame 2 of the unloaded hanger 1 has run to the wire taking frame station, the rocker assembly 3 on the hook frame 2 rises along the guide surface 81 of the trigger device 8, the first connecting rod 31 is lifted, and the outbound shuttle vehicle 42 on the track continues to carry the hanger 1 forward until the hanger 1 is docked with the hook frame 2.

[0121] During docking, the lifting assembly 7 descends, and the positioning hole 11 of the hanger 1 falls to the positioning piece of the hook frame 2. After being placed steadily, the lifting assembly 7 continues to descend until the positioning plate 72 on the lower side is separated from the bottom plate of the hanger 1.

[0122] The hook frame 2 with the hanging rack 1 completes loading and moves forward a short distance, the swing arm assembly 3 on the overhead rail track 100 disengages from the trigger device 8, and the detection switch detects a signal. The hook frame 2 continues to move forward and transports the hanging rack 1 to the next process.

[0123] In order to ensure that the positioning hole 11 on the hanging bracket 1 is completely docked with the positioning piece on the hook bracket 2 , an upper clamping mechanism 5 is provided on the ceiling rail 100 to assist the hook bracket 2 to dock with the hanging bracket 1 .

[0124] Embodiment 2:

[0125] This embodiment provides an EMS-based inbound and outbound transfer method, using the above-mentioned overhead rail transportation system, the method comprising:

[0126] When entering the warehouse: the hanger 1 is positioned and connected to the hook frame 2, so that the swing arm assembly 3 is in a natural hanging state, and the hanger 1 is pressed down by gravity to lock the hanger 1 with the hook frame 2; the swing arm assembly 3 moves with the hook frame 2 until it contacts the trigger device 8, and the swing arm assembly 3 swings under the guidance of the trigger device 8, and separates from the hanger 1 to make the lifting assembly 7 lift and support the hanger 1, and separate the hanger 1 from the hook frame 2; the lifting assembly 7 descends to drive the hanger 1 to be removed from the hook frame 2, and the hanger 1 is transferred to the stereoscopic warehouse 300 by the shuttle vehicle 4;.

[0127] When leaving the warehouse: the hanger 1 is transferred from the stereoscopic warehouse 300 to the lifting assembly 7 of the shuttle vehicle 4; after the lifting assembly 7 moves to the bottom of the corresponding hook frame 2, the lifting assembly 7 lifts and holds the hanger 1, and the hanger 1 is positioned and connected with the hook frame 2; the swing arm assembly 3 is in a natural hanging state, and the hanger 1 is pressed down by gravity to lock the hanger 1 with the hook frame 2. The EMS in-and-out transfer device and transfer method can prevent the hanger 1 from falling off the overhead rail track 100, facilitate the loading and unloading of the hanger 1 from the overhead rail track 100, and will not occupy too much ground area.

[0128] The method further includes:

[0129] When entering the warehouse: before the lifting assembly 7 lifts and holds the hanger 1, the lower clamping mechanism is used to rotate and clamp the two claws 64 or the hanger 1, so that the hanger 1 is positioned on the lifting assembly 7; when leaving the warehouse: the lifting assembly 7 lifts and holds the hanger 1, and when the hanger 1 is positioned and connected to the hook frame 2, the upper clamping mechanism 5 is used to make the first swing arm 51 and the second swing arm 52 rotate in the horizontal plane under the drive of the driving device, and the hanger 1 is clamped by the opposite sides, so that the hanger 1 is positioned and connected to the hook frame 2.

[0130] For a more specific implementation method, please refer to the specific working process of the overhead rail transportation system in the above-mentioned embodiment 1, which will not be described in detail here.

[0131] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0132] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0133] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A ceiling rail conveying system, characterized in that: The invention comprises a ceiling rail, a moving trolley located on the ceiling rail, a material storage device, a trigger device and a locking device located on the moving trolley, wherein: The material storage device is positioned and connected to the mobile trolley, and the locking device includes a swing rod assembly, which is rotatably connected to the mobile trolley. The swing rod assembly has a blocking position and an opening position. When in the blocking position, the swing rod assembly presses down the material storage device, thereby locking the material storage device and the mobile trolley; The trigger device is fixed on the overhead rail. When the mobile trolley moves to the point where the swing arm assembly pushes against the trigger device, the trigger device can push the swing arm assembly to swing, thereby placing the swing arm assembly in the open position. When in the open position, the swing arm assembly is separated from the material storage device, and the material storage device can be unloaded from the mobile trolley. The locking device includes a limit self-locking part, which is fixed on the mobile trolley. When in the blocking position, the rocker assembly can use gravity to press down the material storage device in a natural hanging state. The limit self-locking part abuts against the rocker assembly, thereby limiting the swing of the rocker assembly and causing the rocker assembly to self-lock.

2. The overhead rail conveying system according to claim 1, characterized in that: The rocker assembly comprises a first connecting rod and a second connecting rod, wherein: The first connecting rod is fixedly connected to the second connecting rod, and the connecting part between the first connecting rod and the second connecting rod is rotatably connected to the moving trolley through a first rotating shaft. The free end of the first connecting rod can be pressed against the material storage device under the action of gravity, and the other end of the second connecting rod can move along the trigger device, so that the first connecting rod is rotated to a position away from the material storage device.

3. The overhead rail conveying system according to claim 2, characterized in that: The material storage device is provided with a hanging ear, and the mobile trolley is provided with a positioning piece, and the positioning piece passes through the positioning hole on the hanging ear, so that the material storage device is hung on the mobile trolley; The rotation radius of the first connecting rod is greater than a first horizontal distance a from the first rotating shaft to the minimum spacing of the hanging ear, and is smaller than a second horizontal distance b from the first rotating shaft to the minimum spacing of the positioning member; The acute angle between the line connecting the minimum spacing from the first rotating shaft to the hanging ear and the vertical line is α, and the acute angle between the line connecting the minimum spacing from the first rotating shaft to the positioning member and the vertical line is γ. When the locking device is in the blocking position, the limit self-locking portion abuts against the second connecting rod, and the angle between the axis of the first connecting rod and the vertical line is β, and α<β<γ.

4. The overhead rail conveying system according to claim 1, characterized in that: The swing rod assembly includes a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are both rotatably connected to the moving trolley, wherein: The upper ends of the first connecting rod and the second connecting rod are meshed with each other through gears, the free end of the first connecting rod can be pressed against the material storage device under the action of gravity, and the other end of the second connecting rod can move along the trigger device, so that the first connecting rod rotates to a position away from the material storage device; When the locking device is in the blocking position, the limit self-locking portion abuts against the side of the first connecting rod facing the second connecting rod, the axis of the first connecting rod is inclined toward the side of the second connecting rod, and the angle δ between the axis of the first connecting rod and the vertical line is in the range of: 5°<δ<15°.

5. The overhead rail conveying system according to claim 2 or 4, characterized in that: The trigger device has a guide surface, and the guide surface is inclined relative to the horizontal plane; the swing arm assembly includes a guide wheel, and the guide wheel is rotatably connected to the lower end of the second connecting rod, and the guide wheel can roll and rise along the guide surface, thereby driving the swing arm assembly to rotate and disengage from the material storage device; The trigger device comprises a tripod, and the guide surfaces are located at two opposite sides of the tripod.

6. The overhead rail transportation system according to claim 1, characterized in that: The swing rod assembly comprises a swing rod, a second rotating shaft and a torsion spring, wherein: The second rotating shaft is fixed on the moving trolley, the torsion spring is sleeved on the second rotating shaft, the torsion spring is connected to the swing rod, and when in the blocking position, the swing rod is pressed down on the hanging ear of the material storage device; The trigger device includes a vertical rod. When the mobile trolley moves to a position where the swing rod and the vertical rod push each other, the vertical rod pushes the swing rod to rotate in a horizontal plane, thereby separating from the material storage device.

7. The overhead rail transportation system according to claim 1, characterized in that: The overhead rail conveying system further comprises an upper clamping mechanism, wherein the upper clamping mechanism comprises a first swing arm and a second swing arm, wherein: The first swing arm and the second swing arm are respectively located at opposite sides of the overhead rail, and the first swing arm and the second swing arm can rotate or move horizontally in a horizontal plane under the drive of a corresponding driving device, so that the material storage device is clamped by opposite sides thereof, so that the material storage device is positioned and connected with the mobile trolley; The overhead rail conveying system further includes a shuttle vehicle for conveying the material storage device between the three-dimensional warehouse and the overhead rail, wherein the shuttle vehicle has a lifting assembly, and the lifting assembly can lift and support the material storage device when the swing arm assembly is separated from the material storage device, thereby separating the material storage device from the mobile vehicle; The overhead rail conveying system further comprises a lower clamping mechanism, which comprises a telescopic driving device, a first rod body, and a second rod body, wherein: One end of the first rod body and the second rod body are fixedly connected to the telescopic end of the telescopic driving device, and the other end of the first rod body and the second rod body are fixed with claws, and the claws are rotatably connected to the frame of the shuttle vehicle; the telescopic driving device can drive the first rod body and the second rod body to rotate, so that the two claws rotate and clamp or release the material storage device, so as to facilitate the positioning of the material storage device on the lifting assembly.

8. The overhead rail transportation system according to claim 7, characterized in that: The lifting assembly includes a lifting drive device and a positioning plate, wherein: the lifting drive device is movably arranged along the length direction of the shuttle vehicle, the positioning plate is fixed to the telescopic end of the lifting drive device, and a positioning groove is arranged on the positioning plate, and the material storage device can be limitedly located in the positioning groove; The overhead rail conveying system also includes a stacker, and the shuttle vehicles include an inbound shuttle vehicle and an outbound shuttle vehicle. The stacker is used to transfer the material storage device from the inbound shuttle vehicle to the three-dimensional warehouse, or to transfer the material storage device from the three-dimensional warehouse to the outbound shuttle vehicle.

9. A transfer method based on an overhead rail transport system, characterized in that: Using the overhead rail conveying system described in any one of claims 1 to 8, the overhead rail conveying system further comprises a shuttle vehicle for conveying the material storage device between the stereoscopic warehouse and the overhead rail track, the shuttle vehicle having a lifting assembly, the lifting assembly being able to lift and support the material storage device when the swing arm assembly is separated from the material storage device, thereby separating the material storage device from the material storage device; The method includes: When entering the warehouse: the material storage device is positioned and connected to the mobile trolley, so that the swing arm assembly is in a naturally hanging state, and the material storage device is pressed down by gravity to lock the material storage device and the mobile trolley; The swing arm assembly is moved along with the moving trolley until it contacts the trigger device, and the swing arm assembly swings under the guidance of the trigger device and separates from the material storage device; The lifting assembly is caused to lift and support the material storage device, and the material storage device is separated from the mobile vehicle; The lifting assembly descends to drive the material storage device to be removed from the mobile vehicle, and the material storage device is transferred to the stereoscopic warehouse by using the shuttle vehicle; When leaving the warehouse: transferring the material storage device from the three-dimensional warehouse to the lifting assembly of the shuttle vehicle; After the lifting assembly moves to the lower side of the corresponding moving trolley, the lifting assembly is made to lift and hold the material storage device, so as to position and connect the material storage device with the moving trolley; The swing arm assembly is placed in a naturally hanging state, and gravity is used to press down the material storage device to lock the material storage device and the mobile trolley.

Images