Fork, storage and retrieval device, and storage and retrieval system

Abstract

This application relates to a forklift fork, a goods access device and a goods access system. The forklift fork includes a forklift fork mounting plate, a bottom plate, a pallet pushing component, a first driving component, a side plate and a second driving component. The pallet pushing component, the first driving component and the side plate are arranged on the forklift fork mounting plate, and the forklift fork mounting plate is slidably arranged on the bottom plate along a first direction; the second driving component is arranged on the bottom plate; the pallet pushing component includes a base, a hook component and a contact member. The base is connected to the first driving component, the hook component is slidably connected to the base in the vertical direction, and the contact member is connected to the hook component. The forklift fork of this application can cancel the speed reducer compared with the prior art, reduce the number and weight of components, simplify the structure of the forklift fork, reduce the weight of the forklift fork, and reduce costs.

Description

Technical Field

[0001] This application belongs to the technical field of goods access, and relates to a forklift, a goods access device and a goods access system. Background Art

[0002] With the continuous development of the warehousing and logistics industry, in order to improve the efficiency of the entire warehousing and logistics, the method of accessing goods in modern logistics is particularly important. In the prior art, generally, bottom-inserted or side-clamping forklifts are used to store or retrieve goods from the shelves. This method of accessing goods is generally one-way, that is, goods can only enter and exit from the same end. When the goods are placed in different directions, the direction of the forklift needs to be adjusted, seriously affecting the efficiency of accessing goods; moreover, the method of accessing goods from the bottom or side will occupy the bottom or side space, resulting in insufficient utilization of space. To solve the above problems, a two-way goods access system has emerged.

[0003] An existing two-way goods access system includes a tray, a shelf and a goods access device. A pushing and pulling part is provided on the outer side wall of the tray; the shelf is used for storing the tray; the goods access device includes a fixed seat, a support assembly and two goods access mechanisms. The support assembly and the two goods access mechanisms are arranged on the fixed seat; the goods access mechanism includes a first driving assembly and a hook and pull assembly. The hook and pull assembly can hook and pull the pushing and pulling part, and the driving assembly is configured to drive the hook and pull assembly to move reciprocally.

[0004] However, the existing two-way goods access system requires two goods access mechanisms to achieve two-way goods access, and the driving assembly usually includes a stepping motor and a reducer, resulting in a complex structure, large weight and high cost of the goods access device. Summary of the Invention

[0005] The technical problem to be solved by this application is: aiming at the problems of the existing goods access device with complex structure and large weight, to provide a forklift, a goods access device and a goods access system.

[0006] To solve the above technical problem, on the one hand, this application provides a forklift, which includes a forklift mounting plate, a bottom plate, a tray pushing and positioning assembly, a first driving assembly, a fence and a second driving assembly. The tray pushing and positioning assembly, the first driving assembly and the fence are arranged on the forklift mounting plate. The forklift mounting plate is slidably arranged on the bottom plate along a first direction; the second driving assembly is arranged on the bottom plate; the tray pushing and positioning assembly includes a base, a hook assembly and a contact part. The base is connected to the first driving assembly. The hook assembly is slidably connected to the base in the vertical direction. The contact part is connected to the hook assembly.

[0007] The top surface of the surrounding plate includes a track surface, which includes a first track surface, a second track surface, and a holding surface. The first track surface and the second track surface are located at both ends of the surrounding plate in a first direction. The height of the first track surface gradually increases in a direction away from the second track surface, and the height of the second track surface gradually increases in a direction away from the first track surface. The holding surface is connected between the higher end of the first track surface and the higher end of the second track surface. The contact member contacts the track surface;

[0008] The first driving assembly is used to drive the hook assembly to move around the surrounding plate in a cyclic and reciprocating manner, so that the contact member can move along the track surface. When the contact member moves along the holding surface, the hook assembly is linked with the tray, thereby driving the tray placed on the forklift forks to move in a reciprocating manner in the first direction; when the contact member leaves the holding surface, the hook assembly disengages from the tray;

[0009] The second driving assembly is used to drive the forklift fork mounting plate to slide relative to the bottom plate in the first direction.

[0010] Optionally, when the contact member moves along the first track surface in a direction away from the second track surface to the higher end of the first track surface, the hook assembly slides upward relative to the base, and the hook assembly can be caught in a first handle provided on one side of the tray. When the contact member continues to move along the holding surface towards the second track surface, the hook assembly is linked with the tray, so as to drive the tray to move away from the first track surface relative to the forklift fork mounting plate and extend out of the bottom plate. When the contact member enters the second track surface from the holding surface, the hook assembly slides downward relative to the base, and the hook assembly disengages from the first handle.

[0011] Optionally, the hook assembly includes a hook post, a floating plate, a guide rod, and a return spring. The hook post is vertically connected to the top surface of the floating plate, and the guide rod is vertically connected to the bottom surface of the floating plate;

[0012] The base includes a first auxiliary block, a second auxiliary block, and a guide sleeve connected between the first auxiliary block and the second auxiliary block. A guide hole is provided in the guide sleeve. The guide rod and the return spring are arranged in the guide hole. The return spring is sleeved on the guide rod. The upper end of the return spring is connected to the floating plate, and the lower end of the return spring is connected to the guide sleeve;

[0013] When the contact member moves along the first track surface in a direction away from the second track surface to the higher end of the first track surface, the hook post can be caught in a first handle provided on one side of the tray. When the contact member enters the second track surface from the holding surface, the hook post disengages from the first handle.

[0014] Optionally, when the contact member moves along the second track surface away from the first track surface to the higher end of the second track surface, the hook assembly slides upward relative to the base, and the hook assembly can be snapped into a second handle provided on the other side of the tray. When the contact member continues to move along the holding surface facing the first track surface, the hook assembly is linked with the tray to drive the tray to move relative to the fork mounting plate in a direction close to the first track surface and extend out of the bottom plate. When the contact member enters the first track surface from the holding surface, the hook assembly slides downward relative to the base, and the hook assembly disengages from the second handle.

[0015] Optionally, the hook assembly includes a hook post, a floating plate, a guide rod, and a return spring. The hook post is vertically connected to the top surface of the floating plate, and the guide rod is vertically connected to the bottom surface of the floating plate.

[0016] The base includes a first auxiliary block, a second auxiliary block, and a guide sleeve connected between the first auxiliary block and the second auxiliary block. A guide hole is provided in the guide sleeve. The guide rod and the return spring are arranged in the guide hole. The return spring is sleeved on the guide rod. The upper end of the return spring is connected to the floating plate, and the lower end of the return spring is connected to the guide sleeve.

[0017] When the contact member moves along the second track surface away from the first track surface to the higher end of the second track surface, the hook post can be snapped into a second handle provided on the other side of the tray. When the contact member enters the first track surface from the holding surface, the hook post disengages from the second handle.

[0018] Optionally, the contact member includes a mounting plate and a bearing. The mounting plate is vertically connected to the bottom surface of the floating plate. A mounting shaft is provided on the mounting plate. The inner ring of the bearing is mounted on the mounting shaft, and the outer ring of the bearing contacts the track surface.

[0019] Optionally, the first driving assembly includes a first motor, a driving sprocket, a driven sprocket, and a chain. The housing of the first motor is fixed below the fork mounting plate. An avoidance groove for avoiding the first motor when the fork mounting plate moves is provided on the bottom plate. The driving sprocket and the driven sprocket are rotatably supported above the fork mounting plate. The motor shaft of the first motor passes through the bottom plate and is connected to the driving sprocket. The chain is wound around the driving sprocket and the driven sprocket. The base is fixed to the side of the chain. The motor shaft of the first motor extends in the vertical direction.

[0020] The first motor is used to drive the driving sprocket to rotate, thereby driving the chain and the hook assembly on the chain to move.

[0021] Optionally, the chain includes a chain body and chain side plates connected to the upper and lower sides of the chain body, and the base is fixed to the chain side plates.

[0022] Optionally, the fork further includes a chain guide plate, which is fixed above the fork mounting plate and inside the chain. A guide groove is provided on the chain guide plate, and the chain body passes through the guide groove, with the chain side plates located outside the chain guide plate.

[0023] Optionally, the second drive assembly includes a second motor, a synchronous belt, and a synchronous pulley. The housing of the second motor is fixed below the bottom plate. The second motor is located at the middle position of the bottom plate in the first direction. The synchronous pulley is connected to the motor shaft of the second motor. The synchronous belt is wound around the synchronous pulley and extends in the first direction. Through holes are provided on the bottom plate, and both ends of the synchronous belt penetrate into the through holes. The first end of the synchronous belt is fixed to one side of the bottom surface of the fork mounting plate, and the second end of the synchronous belt is fixed to the other side of the bottom surface of the fork mounting plate. The part of the synchronous belt between the first end and the second end can mesh with the synchronous pulley;

[0024] The second motor is used to drive the synchronous pulley to rotate, and then drive the fork mounting plate to slide relative to the bottom plate in the first direction by pulling the synchronous belt.

[0025] Optionally, the second drive assembly further includes a first tension pulley, a second tension pulley, and a mounting bracket. The first tension pulley and the second tension pulley are rotatably connected to the mounting bracket. The first tension pulley and the second tension pulley are located on both sides of the synchronous pulley in the first direction, and the first tension pulley and the second tension pulley are used to press the synchronous belt.

[0026] Optionally, the enclosure is C-shaped, and a notch is provided on the side of the enclosure opposite to the holding surface. The notch is located between the lower ends of the first track surface and the second track surface.

[0027] Optionally, the first track surface is an arc surface or an inclined surface, the second track surface is an arc surface or an inclined surface, the holding surface is a plane, and the height at each part of the holding surface is the same.

[0028] Optionally, the track surface is a cam surface, so that when the contact part moves along the track surface, its movement track is a cam track.

[0029] According to the fork of the embodiment of the present application, the hook assembly is driven by the first driving assembly to reciprocate around the enclosure (i.e., the hook assembly can rotate clockwise or counterclockwise), so that the contact member can move along the trajectory defined by the trajectory surface of the top surface of the enclosure. When the contact member moves along the holding surface, the hook assembly is linked with the tray, thereby driving the tray placed on the fork to reciprocate in the first direction, and the access of the tray on the shelf can be realized. In this way, compared with the prior art, the speed reducer can be cancelled, the number and weight of parts can be reduced, the structure of the fork can be simplified, the weight of the fork can be reduced, and the cost can be lowered.

[0030] On the other hand, the embodiment of the present application provides an access device, including a tray and the above-mentioned fork. A first handle is arranged on one side of the tray, and a second handle is arranged on the other side of the tray. The hook assembly can be snapped into the first handle or the second handle.

[0031] Optionally, the access device further includes a first roller bracket, a second roller bracket, a plurality of first rollers and a plurality of second rollers. The first roller bracket is fixed on one side in the width direction of the fork mounting plate. A plurality of the first rollers are rotatably connected to the side of the first roller bracket facing the second roller bracket. The plurality of first rollers are arranged in a straight line. The second roller bracket is fixed on the other side in the width direction of the fork mounting plate. A plurality of the second rollers are rotatably connected to the side of the second roller bracket facing the first roller bracket. The plurality of second rollers are arranged in a straight line;

[0032] The tray is placed on the plurality of first rollers and the plurality of second rollers.

[0033] Optionally, a first guide plate is formed by bending above the first roller bracket, and a second guide plate is formed by bending above the second roller bracket. The first guide plate has a first guide groove opening towards the second guide plate, and the second guide plate has a second guide groove opening towards the first guide plate;

[0034] A flange is arranged at the top edge of the tray, and the flange extends into the first guide groove and the second guide groove to limit the up and down movement of the tray.

[0035] Optionally, a first card slot is arranged on the first handle, and a second card slot is arranged on the second handle;

[0036] When the contact member moves along the first trajectory in a direction away from the second trajectory surface to the higher end of the first trajectory surface, the hook assembly can be engaged with the first card slot of the first handle. When the contact member enters the second trajectory surface from the holding surface, the hook assembly disengages from the first card slot of the first handle; and / or when the contact member moves along the second trajectory in a direction away from the first trajectory surface to the higher end of the second trajectory surface, the hook assembly can be engaged with the second card slot of the second handle. When the contact member enters the first trajectory surface from the holding surface, the hook assembly disengages from the second card slot of the second handle.

[0037] In another aspect, an embodiment of the present application provides a storage and retrieval system, including a first shelf, a second shelf, and the above-mentioned storage and retrieval device. The first shelf and the second shelf are located on both sides of the storage and retrieval device in the first direction. The first shelf is close to the first trajectory surface, and the second shelf is close to the second trajectory surface;

[0038] When the tray moves relative to the fork mounting plate in a direction away from the first trajectory surface and extends out of the bottom plate, the second driving assembly drives the fork mounting plate to slide relative to the bottom plate in a direction away from the first trajectory surface, so that the tray completely extends out of the bottom plate and is stored in the second shelf; when the tray moves relative to the fork mounting plate in a direction away from the second trajectory surface and extends out of the bottom plate, the second driving assembly drives the fork mounting plate to slide relative to the bottom plate in a direction away from the second trajectory surface, so that the tray completely extends out of the bottom plate and is stored in the first shelf. Description of the Drawings

[0039] Figure 1 is a perspective view of a fork provided by an embodiment of the present application;

[0040] Figure 2 is Figure 1 another perspective view of;

[0041] Figure 3 is an assembly schematic diagram of the first driving assembly and the tray pushing assembly of a fork provided by an embodiment of the present application;

[0042] Figure 4 is an assembly schematic diagram of the tray pushing assembly and the chain of a fork provided by an embodiment of the present application;

[0043] Figure 5 is Figure 4 another perspective view of;

[0044] Figure 6 is Figure 4 a schematic diagram of removing the guide sleeve;

[0045] Figure 7 is a perspective view of a storage and retrieval device provided by an embodiment of the present application;

[0046] Figure 8 is Figure 7 another perspective view of;

[0047] Figure 9 is Figure 7 side view (along the first direction) of;

[0048] Figure 10 is a schematic diagram of the storage and retrieval device provided by an embodiment of the present application after removing the bottom plate;

[0049] Figure 11 is a schematic diagram of a tray of the storage and retrieval device provided by an embodiment of the present application.

[0050] The reference numerals in the specification are as follows:

[0051] 1, forklift mounting plate; 2, bottom plate; 21, avoidance groove; 22, through hole; 3, tray pushing component; 31, base; 311, first auxiliary block; 312, second auxiliary block; 313, guide sleeve; 32, hook component; 321, hook post; 322, floating plate; 323, guide rod; 324, return spring; 33, contact member; 331, mounting plate; 332, bearing; 4, first driving component; 41, first motor; 42, driving sprocket; 43, driven sprocket; 44, chain; 441, chain body; 442, chain side plate; 5, enclosure; 51, first track surface; 52, second track surface; 53, holding surface; 54, notch; 6, second driving component; 61, second motor; 62, synchronous belt; 63, synchronous pulley; 64, first tensioning pulley; 65, second tensioning pulley; 66, mounting bracket; 7, tray; 71, first handle; 711, first card slot; 72, second handle; 721, second card slot; 73, flange; 8, chain guide plate; 81, guide groove; 91, first roller bracket; 911, first guide plate; 912, first guide groove; 92, second roller bracket; 921, second guide plate; 922, second guide groove; 93, first roller; 94, second roller. Detailed Embodiment

[0052] In order to make the technical problems, technical solutions and beneficial effects solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0053] The first direction in the following text is the movement direction of the tray 7, that is, Figure 1 the X direction in.

[0054] SeeFigures 1 to 11 In the embodiment of the present application, the fork includes a fork mounting plate 1, a bottom plate 2, a tray pushing component 3, a first driving component 4, a surrounding plate 5 and a second driving component 6. The tray pushing component 3, the first driving component 4 and the surrounding plate 5 are arranged on the fork mounting plate 1, and the fork mounting plate is slidably arranged on the bottom plate 2 in a first direction; the second driving component 6 is arranged on the bottom plate 2. The tray pushing component 3 includes a base 31, a hook component 32 and a contact piece 33. The base 31 is connected to the first driving component 4, the hook component 32 is slidably connected to the base 31 in the vertical direction, and the contact piece 33 is connected to the hook component 32.

[0055] The top surface of the surrounding plate 5 includes a track surface, and the track surface includes a first track surface 51, a second track surface 52 and a holding surface 53. The first track surface 51 and the second track surface 52 are located on both sides of the surrounding plate 5 in the first direction. The height of the first track surface 51 gradually increases in the direction away from the second track surface 52, and the height of the second track surface 52 gradually increases in the direction away from the first track surface 51. The holding surface 53 is connected between the higher end of the first track surface 51 and the higher end of the second track surface 52, and the contact piece 33 contacts the track surface.

[0056] The first driving component 4 is used to drive the hook component 32 to move around the surrounding plate 5 in a reciprocating manner, so that the contact piece 33 can move along the track surface. When the contact piece 33 moves along the holding surface 53, the hook component 32 is linked with the tray 7 placed on the fork, thereby driving the tray 7 to move reciprocally in the first direction; when the contact piece 33 leaves the holding surface 52 (for example, when the contact piece 33 enters the first track surface 51 from the holding surface 53 or the contact piece 33 enters the second track surface 52 from the holding surface 53), the hook component 32 disengages from the tray 7.

[0057] The second driving component 6 is used to drive the fork mounting plate 1 to slide relative to the bottom plate 2 in the first direction, so that the fork mounting plate 1 and the tray 7 in the linked state can move in the first direction, so that the tray 7 can completely extend out of the bottom plate 2, facilitating the access of the tray on the first shelf or the second shelf.

[0058] In one embodiment, when the contact piece 33 moves along the first track surface 51 in the direction away from the second track surface 52 to the higher end of the first track surface 51, the hook component 32 slides upward relative to the base 31, and the hook component 32 can be caught in the first handle 71 provided on one side of the tray 7. When the contact piece 33 continues to move along the holding surface 53 towards the second track surface 52, the hook component 32 is linked with the tray 7 to drive the tray 7 to move away from the first track surface 51 relative to the fork mounting plate 1 and extend out of the bottom plate 2. When the contact piece 33 enters the second track surface 52 from the holding surface 53, under the action of the return spring 324 and gravity, the hook component 32 slides downward relative to the base 31, and the hook component 32 disengages from the first handle 71.

[0059] In one embodiment, when the contact member 33 moves along the second track surface 52 away from the first track surface 51 to the higher end of the second track surface 52, the hook assembly 32 slides upward relative to the base 31, and the hook assembly 32 can be engaged with a second handle 72 provided on the other side of the tray 7. When the contact member 33 continues to move along the holding surface 53 towards the first track surface 51, the hook assembly 32 is linked with the tray 7 to drive the tray 7 to move relative to the fork mounting plate 1 towards the direction close to the first track surface 51 and extend out of the bottom plate 52. When the contact member 33 enters the first track surface 51 from the holding surface 53, under the action of the return spring 324 and gravity, the hook assembly 32 slides downward relative to the base 31, and the hook assembly 32 disengages from the second handle 72.

[0060] In one embodiment, referring to Figures 3 to 6 , the hook assembly 32 includes a hook post 321, a floating plate 322, a guide rod 323 and a return spring 324. The hook post 321 is vertically connected to the top surface of the floating plate 322, and the guide rod 323 is vertically connected to the bottom surface of the floating plate 323. Preferably, there are two parallel guide rods 323 to guide the up and down sliding of the hook assembly 32 relative to the base 31.

[0061] In one embodiment, referring to Figures 3 to 6 , the base 31 includes a first auxiliary block 311, a second auxiliary block 312 and a guide sleeve 313 connected between the first auxiliary block 311 and the second auxiliary block 312. A guide hole is provided in the guide sleeve 313, and the guide rod 323 and the return spring 324 are arranged in the guide hole. The guide sleeve return spring 324 is sleeved on the guide rod 323. The upper end of the return spring 324 is connected to the floating plate 322, and the lower end of the return spring 324 is connected to the guide sleeve 313, so that the return spring 324 always pulls the floating plate 322 downward; in this way, the contact member 33 is in close contact with the track surface on the top surface of the enclosure 5, ensuring the stability and accuracy of the movement of the hook assembly 32.

[0062] When the contact member 33 moves along the first track surface 51 away from the second track surface 52 to the higher end of the first track surface 51, the hook post 321 can be engaged with a first handle 71 provided on one side of the tray 7. When the contact member 33 climbs along the first track surface 51, the elastic force of the return spring 4 makes the contact member 33 always press tightly on the first track surface 51 to ensure the smoothness and accuracy of the movement. When the contact member 33 enters the second track surface 52 from the holding surface 53, the hook post 321 disengages from the first handle 71. When the contact member 33 descends along the first track surface 51, the elastic force of the return spring 4 makes the contact member 33 always press tightly on the first track surface 51 to ensure that the contact member 33 can disengage from the first handle 71.

[0063] When the contact member 33 moves along the second track surface 52 away from the first track surface 51 to the higher end of the second track surface 52, the hook post 321 can be engaged with the second handle 72 provided on the other side of the tray 7. When the contact member 33 climbs along the second track surface 52, the elastic force of the return spring 4 causes the contact member 33 to always press against the second track surface 52, ensuring the smoothness and accuracy of the movement. When the contact member 33 enters the first track surface 51 from the holding surface 53, the hook post 321 disengages from the second handle 72. When the contact member 33 descends along the second track surface 52, the elastic force of the return spring 4 causes the contact member 33 to always press against the second track surface 52, ensuring that the contact member 33 can disengage from the second handle 71. When the contact member 33 moves along the holding surface 53, the elastic force of the return spring 4 causes the contact member 33 to always press against the holding surface 53, ensuring that when the contact member 33 moves along the holding surface 53, the hook post 321 and the tray 7 can be stably engaged together.

[0064] In one embodiment, referring to Figure 4 , the contact member 33 includes a mounting plate 331 and a bearing 332. The mounting plate 331 is vertically connected to the bottom surface of the floating plate 322. A mounting shaft is provided on the mounting plate 331, and the inner ring of the bearing 332 is mounted on the mounting shaft, and the outer ring of the bearing 332 contacts the track surface of the surrounding plate 5. When the bearing 332 moves along the track surface, it is a rolling friction, which reduces the frictional force and can reduce the energy consumption.

[0065] In one embodiment, referring to Figures 1 to 3 , the first driving assembly 4 includes a first motor 41, a driving sprocket 42, a driven sprocket 43 and a chain 44. The housing of the first motor 41 is fixed below the forklift fork mounting plate 1. An avoidance groove 21 for avoiding the first motor when the forklift fork mounting plate 1 moves is provided on the bottom plate 2. The driving sprocket 42 and the driven sprocket 43 are rotatably supported above the forklift fork mounting plate 1. The motor shaft of the first motor 41 passes through the bottom plate 2 and is connected to the driving sprocket 42. The chain 44 is wound around the driving sprocket 42 and the driven sprocket 43. The base 31 is fixed to the side of the chain 44. The motor shaft of the first motor 41 extends in the vertical direction; the first motor 41 is used to drive the driving sprocket 42 to rotate, thereby driving the chain 44 and the hook assembly 32 on the chain 44 to move.

[0066] The position of the driving sprocket 42 is fixed, and the position of the driven sprocket 43 is adjustable.

[0067] In one embodiment, referring to Figure 3 , the chain 44 includes a chain body 441 and chain side plates 442 connected to the upper and lower sides of the chain body 441. The base 31 is fixed to the chain side plates 442.

[0068] In one embodiment, referring to Figure 3, the fork further includes a chain guide plate 8, the chain guide plate 8 is fixed above the fork mounting plate 1 and located inside the chain 44, a guide groove 81 is provided on the chain guide plate 8, the chain body 441 passes through the guide groove 81, and the chain side plate 442 is located outside the chain guide plate 8. Through the chain guide plate 8, the chain can move stably.

[0069] In one embodiment, referring to Figure 2 and Figure 10 , the second driving assembly 6 includes a second motor 61, a synchronous belt 62 and a synchronous pulley 63. The housing of the second motor 61 is fixed below the bottom plate 2. The second motor 61 is located at the middle position of the bottom plate 2 in the first direction. The synchronous pulley 63 is connected to the motor shaft of the second motor 61. The synchronous belt 62 is wound around the synchronous pulley 63. The synchronous belt 62 extends in the first direction. A through hole 22 is provided on the bottom plate 2. Both ends of the synchronous belt 62 penetrate into the through hole 22. The first end of the synchronous belt 62 is fixed to one side of the bottom surface of the fork mounting plate 1, and the second end of the synchronous belt 62 is fixed to the other side of the bottom surface of the fork mounting plate 1. The part of the synchronous belt 62 between the first end and the second end can mesh with the synchronous pulley 63; the second motor 61 is used to drive the synchronous pulley 63 to rotate, and then drive the fork mounting plate 1 to slide relative to the bottom plate 2 in the first direction by pulling the synchronous belt 62.

[0070] In one embodiment, the second driving assembly 6 further includes a first tension pulley 64, a second tension pulley 65 and a mounting bracket 66. The first tension pulley 64 and the second tension pulley 65 are rotatably connected to the mounting bracket 66. The first tension pulley 64 and the second tension pulley 65 are located on both sides of the synchronous pulley 63 in the first direction. The first tension pulley 64 and the second tension pulley 65 are used to press the synchronous belt 62. So that the movement of the synchronous belt is more stable and prevent the synchronous belt 62 from falling off the synchronous pulley 63.

[0071] In one embodiment, referring to Figure 3 , the enclosure 5 is in a C shape. A notch 54 is provided on the side of the enclosure 5 opposite to the holding surface 53. The notch 54 is located between the lower ends of the first track surface 51 and the second track surface 52. In this way, the contact member 33 is in a suspended state when passing through the notch 54. Preferably, the track surface is a cam surface, so that when the contact member 33 moves along the track surface, its movement track is a cam track. The shape of the cam track can be adjusted according to different movement requirements. Correspondingly, the cam track is disconnected at the notch 54.

[0072] However, the surrounding plate 5 can also be directly made into a ring shape, that is, the notch 54 is no longer provided. The overall top surface of the surrounding plate 5 is a track surface. The surface of the track surface between the lower end of the first track surface 51 and the lower end of the second track surface 52 is the third track surface, and the height of the third track surface is lower than the lower ends of the first track surface 51 and the second track surface 52.

[0073] According to the fork of the embodiment of the present application, the hook assembly 32 is driven by the first driving assembly 4 to reciprocate around the enclosure 5 (i.e., the hook assembly 32 can rotate clockwise or counterclockwise), so that the contact member 33 can move along the trajectory defined by the trajectory surface on the top surface of the enclosure 5. When the contact member 33 moves along the first trajectory surface 51 away from the second trajectory surface 52 to the higher end of the first trajectory surface 51, the hook assembly 32 slides upward relative to the base 31, and the hook assembly 32 can be caught in the first handle 71 provided on one side of the tray 7. When the contact member 33 continues to move along the holding surface 53 towards the second trajectory surface 52, the hook assembly 32 is linked with the tray 7 to drive the tray 7 to move away from the first trajectory surface 51 relative to the fork mounting plate 1 and extend out of the bottom plate 2. Then, the first driving assembly 4 stops working, and the second driving assembly 6 drives the fork mounting plate 1 to continue to move away from the first trajectory surface 51 relative to the bottom plate 2, so that the tray 7 completely extends out of the bottom plate 2 and enters the second shelf close to the second handle 72. Then, the contact member 33 enters the second trajectory surface 52 from the holding surface 53. Under the action of the return spring 324 and gravity, the hook assembly 32 slides downward relative to the base 31, and the hook assembly 32 disengages from the first handle 71 to store the tray 7 on the second shelf. The process of taking out the tray 7 on the second shelf is opposite to the storing process, thus realizing the access of the tray 7 on the second shelf. In addition, when the contact member 33 moves along the second trajectory surface 52 away from the first trajectory surface 51 to the higher end of the second trajectory surface 52, the hook assembly 32 slides upward relative to the base 31, and the hook assembly 32 can be caught in the second handle 72 provided on the other side of the tray 7. When the contact member 33 continues to move along the holding surface 53 towards the first trajectory surface 51, the hook assembly 32 is linked with the tray 7 to drive the tray 7 to move towards the first trajectory surface 51 relative to the fork mounting plate 1 and extend out of the bottom plate 2. Then, the first driving assembly 4 stops working, and the second driving assembly 6 drives the fork mounting plate 1 to continue to move away from the second trajectory surface 52 relative to the bottom plate 2, so that the tray 7 completely extends out of the bottom plate 2 and enters the first shelf close to the first handle 71. Then, the contact member 33 enters the first trajectory surface 51 from the holding surface 53. Under the action of the return spring 324 and gravity, the hook assembly 32 slides downward relative to the base 31, and the hook assembly 32 disengages from the second handle 72 to store the tray 7 on the first shelf. The process of taking out the tray 7 on the first shelf is opposite to the storing process, thus realizing the access of the tray 7 on the first shelf. In this way, a two-way access (accessing and storing trays) function is achieved through a first driving assembly 4 (including a first motor 41, a driving sprocket 42, a driven sprocket 43, and a chain 44). Compared with the existing two-way access system, one access mechanism is reduced, and the speed reducer is cancelled, reducing the number and weight of components, which can simplify the structure of the fork, reduce the weight of the fork, and lower the cost.

[0074] Of course, the fork of the present application can also be used for one-way access to goods.

[0075] In other embodiments, the contact member 33 can also have other forms. For example, the contact between the contact member and the top surface of the enclosure 5 can be a sliding contact or a rolling contact. The bearing 332 can also be replaced by a roller or a slider, etc.

[0076] In other embodiments, the first drive assembly 4 can also be a belt drive mechanism.

[0077] In other embodiments, the first track surface 51 can also be an arc surface or an inclined surface, and the second track surface 52 can also be an arc surface or an inclined surface. The holding surface 53 is a plane, and the heights at various positions of the holding surface 53 are the same.

[0078] In other embodiments, the track surface can also be a groove surface or a convex surface.

[0079] In other embodiments, the second drive assembly 6 can also be a gear, a rack and bar drive mechanism, a worm and worm gear drive mechanism, etc.

[0080] On the other hand, referring to Figures 7 to 11 , the embodiment of the present application further provides an access device, including a tray 7 and the above-mentioned fork. A first handle 71 is provided on one side of the tray 7, and a second handle 72 is provided on the other side of the tray 7. The hook assembly 32 can be snapped into the first handle 71 or the second handle 72.

[0081] In one embodiment, referring to Figure 1 and Figure 9 , the access device further includes a first roller bracket 91, a second roller bracket 92, a plurality of first rollers 93 and a plurality of second rollers 94. The first roller bracket 91 is fixed on one side in the width direction of the fork mounting plate 1. The plurality of first rollers 93 are rotatably connected to the side of the first roller bracket 91 facing the second roller bracket 92. The plurality of first rollers 93 are arranged in a straight line. The second roller bracket 92 is fixed on the other side in the width direction of the fork mounting plate 1. The plurality of second rollers 94 are rotatably connected to the side of the second roller bracket 92 facing the first roller bracket 91. The plurality of second rollers 94 are arranged in a straight line; the tray 7 is placed on the plurality of first rollers 93 and the plurality of second rollers 94. In this way, the tray 7 can move flexibly on the fork.

[0082] In one embodiment, referring to Figure 7 and Figure 9Above the first roller bracket 91, a first guide plate 911 is formed by bending. Above the second roller bracket 92, a second guide plate 921 is formed by bending. The first guide plate 911 has a first guide groove 912 opening towards the second guide plate 921, and the second guide plate 921 has a second guide groove 922 opening towards the first guide plate 911. A flanging 73 is provided at the top edge of the tray 7, and the flanging 73 extends into the first guide groove 912 and the second guide groove 922 to limit the up-and-down movement of the tray 7 and prevent the tray 7 from tipping over.

[0083] In one embodiment, referring to Figure 11 A first card slot 711 is provided on the first handle 71, and a second card slot 721 is provided on the second handle 72.

[0084] When the contact member 33 slides to the first preset position on the first track surface 51, the hook assembly 32 can be engaged with the first card slot 711 of the first handle 71.

[0085] When the contact member 33 slides to the second preset position on the second track surface 52, the hook assembly 32 can be engaged with the second card slot 721 of the second handle 72.

[0086] The working principle of the access device according to the embodiment of the present application is as follows:

[0087] When the tray 7 is placed on the forklift forks, the forklift fork mounting plate 1 is in the middle position. The rotation of the first motor 41 can drive the driving sprocket 42 to rotate, and then drive the chain 44 to rotate. The chain 44 drives the hook assembly 32 and the tray 7 to move back and forth, and the bearing 332 of the contact member 33 is in close contact with the track surface of the surrounding plate 5.

[0088] The first motor 41 rotates forward (forward rotation and reverse rotation are relative concepts. For example, if forward rotation is clockwise, then reverse rotation is counterclockwise). When the bearing 332 of the contact member 33 moves along the first track surface 51 in a direction away from the second track surface 52 to the higher end of the first track surface 51, the hook assembly 32 slides upward relative to the base 31, and the hook post 321 of the hook assembly 32 is caught in the first handle 70 provided on one side of the tray 7. When the bearing 332 of the contact member 33 continues to move along the holding surface 53 towards the second track surface 52, the hook assembly 32 is linked with the tray 7 to drive the tray 7 to move relative to the fork mounting plate 1 in a direction away from the first track surface 51 and extend out of the bottom plate 2. Then, the first motor 41 stops working, and the second motor 61 drives the synchronous pulley 63 to rotate, and then drives the fork mounting plate 1 to slide relative to the bottom plate 2 in the first direction towards the second shelf, so that the tray 7 completely extends out of the bottom plate 2 and enters the second shelf close to the second handle 72. Then, the bearing 332 of the contact member 33 enters the second track surface 52 from the holding surface 53. Under the action of the return spring 324 and gravity, the hook assembly 32 slides downward relative to the base 31, and the hook post 321 of the hook assembly 32 disengages from the first handle 71 to store the tray 7 on the second shelf. The process of taking out the tray 7 on the second shelf is opposite to the storage process, thus realizing the access of the tray 7 on the second shelf.

[0089] Similarly, when the first motor 41 rotates in reverse, when the bearing 332 of the contact member 33 moves along the second track surface 52 in a direction away from the first track surface 51 to the higher end of the second track surface 52, the hook assembly 32 slides upward relative to the base 31, and the hook post 321 of the hook assembly 32 can be caught in the second handle 72 provided on the other side of the tray 7. When the bearing 332 of the contact member 33 continues to move along the holding surface 53 towards the first track surface 51, the hook assembly 32 is linked with the tray 7 to drive the tray 7 to move relative to the fork mounting plate 1 in a direction towards the first track surface 51 and extend out of the bottom plate 2. Then, the first motor 41 stops working, and the second motor 61 drives the synchronous pulley 63 to rotate, and then drives the fork mounting plate 1 to slide relative to the bottom plate 2 in the first direction towards the first shelf, so that the tray 7 completely extends out of the bottom plate 2 and enters the first shelf close to the first handle 71. Then, the bearing 332 of the contact member 33 enters the first track surface 51 from the holding surface 53. Under the action of the return spring 324 and gravity, the hook assembly 32 slides downward relative to the base 31, and the hook post 321 of the hook assembly 32 disengages from the second handle 72 to store the tray 7 on the first shelf. The process of taking out the tray 7 on the first shelf is opposite to the storage process, thus realizing the access of the tray 7 on the first shelf.

[0090] On the other hand, an embodiment of the present application provides a storage and retrieval system, including a first shelf, a second shelf, and the above-mentioned storage and retrieval device. The first shelf and the second shelf are located on both sides of the storage and retrieval device in a first direction. The first shelf is close to the first track surface 51, and the second shelf is close to the second track surface 52.

[0091] When the tray 7 moves relative to the fork mounting plate 1 in a direction away from the first track surface 51 and extends out of the bottom plate 2, the second driving assembly 6 drives the fork mounting plate 1 to slide relative to the bottom plate 2 in a direction away from the first track surface 51, so that the tray 7 completely extends out of the bottom plate 2 and is stored in the second shelf.

[0092] When the tray 7 moves relative to the fork mounting plate 1 in a direction away from the second track surface 52 and extends out of the bottom plate 2, the second driving assembly 6 drives the fork mounting plate 1 to slide relative to the bottom plate 2 in a direction away from the second track surface 52, so that the tray 7 completely extends out of the bottom plate 2 and is stored in the first shelf.

[0093] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A forklift fork, characterized in that, It includes a fork mounting plate, a bottom plate, a tray pushing component, a first driving component, a fence and a second driving component. The tray pushing component, the first driving component and the fence are arranged on the fork mounting plate, and the fork mounting plate is slidably arranged on the bottom plate along a first direction; the second driving component is arranged on the bottom plate; the tray pushing component includes a base, a hook component and a contact member. The base is connected to the first driving component, the hook component is slidably connected to the base in the vertical direction, and the contact member is connected to the hook component; The top surface of the fence includes a track surface, and the track surface includes a first track surface, a second track surface and a holding surface. The first track surface and the second track surface are located at both ends of the fence in the first direction. The height of the first track surface gradually increases in the direction away from the second track surface, and the height of the second track surface gradually increases in the direction away from the first track surface. The holding surface is connected between the higher end of the first track surface and the higher end of the second track surface, and the contact member contacts the track surface; The first driving component is used to drive the hook component to move cyclically around the fence, so that the contact member can move along the track surface. When the contact member moves along the holding surface, the hook component is linked with the tray placed on the fork, so as to drive the tray to move reciprocally along the first direction; when the contact member leaves the holding surface, the hook component disengages from the tray; The second driving component is used to drive the fork mounting plate to slide relative to the bottom plate along the first direction.

2. The forklift tine according to claim 1, characterized in that, When the contact member moves along the first track surface in the direction away from the second track surface to the higher end of the first track surface, the hook component slides upward relative to the base, and the hook component can be caught in a first handle provided on one side of the tray. When the contact member continues to move along the holding surface towards the second track surface, the hook component is linked with the tray to drive the tray to move away from the first track surface relative to the fork mounting plate and extend out of the bottom plate. When the contact member enters the second track surface from the holding surface, the hook component slides downward relative to the base, and the hook component disengages from the first handle.

3. The forklift tine according to claim 2, wherein, The hook component includes a hook post, a floating plate, a guide rod and a return spring. The hook post is vertically connected to the top surface of the floating plate, and the guide rod is vertically connected to the bottom surface of the floating plate; The base includes a first auxiliary block, a second auxiliary block and a guide sleeve connected between the first auxiliary block and the second auxiliary block. A guide hole is provided in the guide sleeve, and the guide rod and the return spring are arranged in the guide hole. The return spring is sleeved on the guide rod. The upper end of the return spring is connected to the floating plate, and the lower end of the return spring is connected to the guide sleeve; When the contact member moves along the first track surface in the direction away from the second track surface to the higher end of the first track surface, the hook post can be caught in a first handle provided on one side of the tray. When the contact member enters the second track surface from the holding surface, the hook post disengages from the first handle.

4. The forklift tine according to claim 2, characterized in that, When the contact member moves along the second track surface in a direction away from the first track surface to the higher end of the second track surface, the hook assembly slides upward relative to the base, and the hook assembly can be engaged with a second handle provided on the other side of the tray. When the contact member continues to move along the holding surface towards the first track surface, the hook assembly is linked with the tray to drive the tray to move relative to the fork mounting plate in a direction close to the first track surface and extend out of the bottom plate. When the contact member enters the first track surface from the holding surface, the hook assembly slides downward relative to the base, and the hook assembly disengages from the second handle.

5. The forklift tine according to claim 4, characterized in that, The hook assembly includes a hook post, a floating plate, a guide rod and a return spring. The hook post is vertically connected to the top surface of the floating plate, and the guide rod is vertically connected to the bottom surface of the floating plate. The base includes a first auxiliary block, a second auxiliary block and a guide sleeve connected between the first auxiliary block and the second auxiliary block. A guide hole is provided in the guide sleeve. The guide rod and the return spring are arranged in the guide hole. The return spring is sleeved on the guide rod. The upper end of the return spring is connected to the floating plate, and the lower end of the return spring is connected to the guide sleeve. When the contact member moves along the second track surface in a direction away from the first track surface to the higher end of the second track surface, the hook post can be engaged with a second handle provided on the other side of the tray. When the contact member enters the first track surface from the holding surface, the hook post disengages from the second handle.

6. The forklift tine according to claim 3 or 5, characterized in that, The contact member includes a mounting plate and a bearing. The mounting plate is vertically connected to the bottom surface of the floating plate. A mounting shaft is provided on the mounting plate. The inner ring of the bearing is mounted on the mounting shaft, and the outer ring of the bearing is in contact with the track surface.

7. The forklift tine according to claim 1, wherein, The first driving assembly includes a first motor, a driving sprocket, a driven sprocket and a chain. The housing of the first motor is fixed below the fork mounting plate. An avoidance groove is provided on the bottom plate for avoiding the first motor when the fork mounting plate moves. The driving sprocket and the driven sprocket are rotatably supported above the fork mounting plate. The motor shaft of the first motor passes through the bottom plate and is connected to the driving sprocket. The chain is wound around the driving sprocket and the driven sprocket. The base is fixed on the side of the chain. The motor shaft of the first motor extends in the vertical direction. The first motor is used to drive the driving sprocket to rotate, thereby driving the chain and the hook assembly on the chain to move.

8. The forklift tine according to claim 7, characterized in that, The chain includes a chain body and chain side plates connected to the upper and lower sides of the chain body. The base is fixed on the chain side plates.

9. The forklift tine according to claim 8, characterized in that, The fork further includes a chain guide plate. The chain guide plate is fixed above the fork mounting plate and located inside the chain. A guide groove is provided on the chain guide plate. The chain body passes through the guide groove, and the chain side plates are located outside the chain guide plate.

10. The forklift fork according to claim 1, characterized in that, The second driving assembly includes a second motor, a synchronous belt and a synchronous pulley. The housing of the second motor is fixed below the base plate. The second motor is located at the middle position of the base plate in the first direction. The synchronous pulley is connected to the motor shaft of the second motor. The synchronous belt is wound around the synchronous pulley. The synchronous belt extends in the first direction. A through hole is provided on the base plate. Both ends of the synchronous belt penetrate into the through hole. The first end of the synchronous belt is fixed to one side of the bottom surface of the fork mounting plate, and the second end of the synchronous belt is fixed to the other side of the bottom surface of the fork mounting plate. The part of the synchronous belt between the first end and the second end can be engaged with the synchronous pulley; The second motor is used to drive the synchronous pulley to rotate, and further drive the fork mounting plate to slide relative to the base plate in the first direction by pulling the synchronous belt.

11. The forklift tine according to claim 10, characterized in that, The second driving assembly further includes a first tension pulley, a second tension pulley and a mounting bracket. The first tension pulley and the second tension pulley are rotatably connected to the mounting bracket. The first tension pulley and the second tension pulley are located on both sides of the synchronous pulley in the first direction. The first tension pulley and the second tension pulley are used to press the synchronous belt.

12. The forklift tine according to claim 1, characterized in that, The enclosure is C-shaped. A notch is provided on the side of the enclosure opposite to the holding surface. The notch is located between the lower end of the first track surface and the lower end of the second track surface.

13. The forklift tine according to claim 1, characterized in that, The first track surface is an arc surface or an inclined surface, the second track surface is an arc surface or an inclined surface, the holding surface is a plane, and the height at each part of the holding surface is the same.

14. The forklift tine according to claim 1, characterized in that, The track surface is a cam surface, so that when the contact member moves along the track surface, its movement track is a cam track.

15. An access device, characterized in that, It includes a tray and the fork according to any one of claims 1-14. A first handle is provided on one side of the tray, and a second handle is provided on the other side of the tray. The hook assembly can be snapped into the first handle or the second handle.

16. The access device according to claim 15, wherein, The access device further includes a first roller bracket, a second roller bracket, a plurality of first rollers and a plurality of second rollers. The first roller bracket is fixed to one side in the width direction of the fork mounting plate. A plurality of the first rollers are rotatably connected to the side of the first roller bracket facing the second roller bracket. The plurality of first rollers are arranged in a straight line. The second roller bracket is fixed to the other side in the width direction of the fork mounting plate. A plurality of the second rollers are rotatably connected to the side of the second roller bracket facing the first roller bracket. The plurality of second rollers are arranged in a straight line; The tray is placed on the plurality of first rollers and the plurality of second rollers.

17. The access device according to claim 16, wherein A first guide plate is formed by bending upward above the first roller bracket, and a second guide plate is formed by bending upward above the second roller bracket. The first guide plate has a first guide groove opening towards the second guide plate, and the second guide plate has a second guide groove opening towards the first guide plate; A flange is provided at the top edge of the tray. The flange extends into the first guide groove and the second guide groove to limit the up and down movement of the tray.

18. The access device according to claim 16, characterized in that, A first card slot is provided on the first handle, and a second card slot is provided on the second handle; When the contact member moves along the first track surface in a direction away from the second track surface to the higher end of the first track surface, the hook assembly can be engaged in the first card slot of the first handle. When the contact member enters the second track surface from the holding surface, the hook assembly disengages from the first card slot of the first handle; and / or when the contact member moves along the second track surface in a direction away from the first track surface to the higher end of the second track surface, the hook assembly can be engaged in the second card slot of the second handle. When the contact member enters the first track surface from the holding surface, the hook assembly disengages from the second card slot of the second handle.

19. An access and storage system, characterized in that, Comprising a first shelf, a second shelf and the access device according to any one of claims 15-18, the first shelf and the second shelf are located on both sides of the access device in a first direction, the first shelf is close to the first track surface, and the second shelf is close to the second track surface; When the tray moves relative to the fork mounting plate in a direction away from the first track surface and extends out of the bottom plate, the second drive assembly drives the fork mounting plate to slide relative to the bottom plate in a direction away from the first track surface, so that the tray completely extends out of the bottom plate and is stored in the second shelf; when the tray moves relative to the fork mounting plate in a direction away from the second track surface and extends out of the bottom plate, the second drive assembly drives the fork mounting plate to slide relative to the bottom plate in a direction away from the second track surface, so that the tray completely extends out of the bottom plate and is stored in the first shelf.

Images