AGV forklift

Abstract

The invention relates to the technical field of telescopic arms, in particular to an AGV forklift which comprises a base, a fork tooth assembly and a telescopic arm mechanism, the telescopic arm mechanism comprises a moving frame, a driving assembly, two transmission assemblies, two moving assemblies and a lifting module, the driving assembly is started, the driving assembly drives the two transmission assemblies to rotate, and the lifting module is started; the two transmission assemblies drive the two moving assemblies to rotate, the two moving assemblies drive the fork tooth assemblies on the moving frame to move towards the side close to the pallet till the fork tooth assemblies make contact with the pallet and move to the preset position, and the lifting module works to drive the fork tooth assemblies to be lifted to the preset height towards the side away from the ground. After the driving assembly rotates reversely to drive the fork tooth assembly to drive the pallet to move towards the side close to the base, the lifting module resets, the pallet is placed on the base, and therefore the problem that the accumulated gap of an existing telescopic arm structure is large under the long stroke, and the positioning precision is attenuated along with the mileage is solved.

Description

Technical Field

[0001] This invention relates to the field of telescopic boom technology, and more particularly to an AGV forklift. Background Technology

[0002] Current AGV forklifts generally employ a two- or three-stage synchronous belt / chain driven sleeve-type sliding boom. The outer boom is fixed to the mast, while the inner boom houses nylon sliders or roller assemblies. A servo motor drives a sprocket-chain mechanism via a reducer to achieve extension and retraction. Simultaneously, hydraulic or electric push rods are arranged inside the boom cavity as secondary drives to achieve horizontal extension and retraction of the forks. This structure allows the forks to extend into the depth of the rack without the vehicle body moving, enabling access to double or multi-row storage locations, and has been widely used in narrow aisle automated warehouses.

[0003] However, this telescopic boom structure still has the following problems in AGV forklifts: because the boom body needs to be nested in stages, the cross-section of the inner boom is forced to shrink, resulting in a decrease in the stiffness of the front end of the cantilever and an increase in the sagging of the fork teeth under heavy load; the chain-slider composite drive has a large cumulative gap under long stroke, and the positioning accuracy decreases with the mileage; the low sealing level of the boom cavity makes it easy for dust to enter the sliding surface, causing abnormal wear of the nylon slider and jamming during return; at the same time, the telescopic action and the whole vehicle travel share the power battery, and the high frequency of outward extension and retraction causes a significant current surge, shortens the driving time, and increases the maintenance cycle. Summary of the Invention

[0004] The purpose of this invention is to provide an AGV forklift that aims to solve the problem of large cumulative gaps and decreased positioning accuracy with mileage in existing telescopic boom structures over long strokes.

[0005] To achieve the above objectives, the present invention provides an AGV forklift, including a base, a fork assembly, and a telescopic boom mechanism. The telescopic boom mechanism includes a movable frame, a drive assembly, two transmission assemblies, two movable assemblies, and a lifting module. The movable frame is mounted on the base, the lifting module is mounted on the movable frame, the drive assembly is mounted on the movable frame, the two transmission assemblies are respectively connected to the drive assembly and are both mounted on the movable frame, the two movable assemblies are respectively mounted on the two transmission assemblies, and the fork assembly is mounted on the lifting module.

[0006] The drive assembly includes a motor, a reducer, and a rotating shaft. The motor is fixedly connected to the movable frame and located on the movable frame. The reducer is connected to the output end of the motor. The drive shaft is connected to the reducer and rotatably connected to the movable frame.

[0007] The transmission assembly includes a transmission wheel, a driven wheel, and a transmission belt. The transmission wheel is fixedly connected to the rotating shaft and is located on the rotating shaft. The driven wheel is rotatably connected to the movable frame and is located on one side of the movable frame. The transmission belt is sleeved on the transmission wheel and the driven wheel.

[0008] The movable component includes a connecting shaft and a movable wheel. The connecting shaft is fixedly connected to the driven wheel and is located on one side of the transmission wheel. The movable wheel is fixedly connected to the connecting shaft and contacts the base.

[0009] The telescopic arm mechanism further includes two cylinders, two moving plates, and two abutting blocks. The two cylinders are rotatably connected to the base and are located on the side of the base near the moving frame. The two moving plates are rotatably connected to the base and rotatably connected to the output ends of the two cylinders. The two abutting blocks are rotatably connected to the two moving plates and rotatably connected to the base.

[0010] The telescopic arm mechanism further includes two support frames, two side support frames, multiple moving components, and two lateral components. The two support frames are fixedly connected to the base and are located on the base. The two side support frames are fixedly connected to the base and are located on the side of the base closest to the support frames. The multiple moving components are located at the bottom of the base, and the two lateral components are installed at the bottom of the base.

[0011] The movable component includes a mounting frame and a first roller. The mounting frame is fixedly connected to the base and located at the bottom of the base. The first roller is rotatably connected to the mounting frame and located on the mounting frame.

[0012] This invention discloses an AGV forklift where the base provides installation conditions for the telescopic boom mechanism. When needed, the drive assembly is activated, driving two transmission components to rotate. These transmission components then drive two moving components to rotate, and the moving components move the fork tooth assembly on the moving frame towards the side closer to the pallet. Once the fork tooth assembly contacts the pallet and moves to a preset position, the lifting module drives the fork tooth assembly to lift it away from the ground to a preset height. The drive assembly then reverses, driving the fork tooth assembly to move the pallet towards the side closer to the base. Finally, the lifting module resets, placing the pallet on the base. This solves the problem of large accumulated gaps and decreased positioning accuracy with mileage in existing telescopic boom structures over long strokes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a structural schematic diagram of an AGV forklift according to the present invention.

[0016] Figure 2 This is a cross-sectional view of an AGV forklift according to the present invention.

[0017] Figure 3 This is a side view of an AGV forklift display cylinder according to the present invention.

[0018] Figure 4 and Figure 5 This is a schematic diagram of the structure of an AGV forklift from another direction according to the present invention.

[0019] In the diagram: 101-base, 102-fork assembly, 103-moving frame, 104-lifting module, 105-motor, 106-reducer, 107-rotating shaft, 108-transmission wheel, 109-driven wheel, 110-transmission belt, 111-connecting shaft, 112-moving wheel, 113-cylinder, 114-moving plate, 115-support block, 201-support frame, 202-side support frame, 203-mounting frame, 204-roller one, 205-driving component, 206-roller two, 207-fitting groove, 208-anti-collision strip. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] Please see Figures 1-5 This invention provides an AGV forklift, including a base 101, a fork assembly 102, and a telescopic arm mechanism. The telescopic arm mechanism includes a movable frame 103, a drive assembly, two transmission assemblies, two movable assemblies, and a lifting module 104. The movable frame 103 is mounted on the base 101, the lifting module 104 is mounted on the movable frame 103, the drive assembly is mounted on the movable frame 103, the two transmission assemblies are respectively connected to the drive assembly and are both mounted on the movable frame 103, the two movable assemblies are respectively mounted on the two transmission assemblies, and the fork assembly 102 is mounted on the lifting module 104.

[0023] In this embodiment, the base 101 provides the installation conditions for the telescopic arm mechanism. When needed, the drive assembly is activated, which drives the two transmission assemblies to rotate. The two transmission assemblies drive the two moving assemblies to rotate, and the two moving assemblies drive the fork tooth assembly 102 on the moving frame 103 to move towards the side closer to the pallet until the fork tooth assembly 102 contacts the pallet and moves to a preset position. Then, the lifting module 104 drives the fork tooth assembly 102 to lift away from the ground to a preset height. After that, the drive assembly reverses and drives the fork tooth assembly 102 to move the pallet towards the side closer to the base 101. Then, the lifting module 104 resets and places the pallet on the base 101, thereby solving the problem of large cumulative gaps and decreased positioning accuracy with mileage in existing telescopic arm structures under long strokes.

[0024] Furthermore, the drive assembly includes a motor 105, a reducer 106, and a rotating shaft 107. The motor 105 is fixedly connected to the movable frame 103 and is located on the movable frame 103. The reducer 106 is connected to the output end of the motor 105. The drive shaft is connected to the reducer 106 and rotatably connected to the movable frame 103.

[0025] In this embodiment, the operation of the motor 105 can drive the rotating shaft 107 to rotate, and the rotation of the rotating shaft 107 can drive the transmission wheel 108 to rotate. The speed reducer 106 can reduce the high-speed, low-torque power output by the motor 105 to low-speed, high-torque.

[0026] Furthermore, the transmission assembly includes a transmission wheel 108, a driven wheel 109, and a transmission belt 110. The transmission wheel 108 is fixedly connected to the rotating shaft 107 and is located on the rotating shaft 107. The driven wheel 109 is rotatably connected to the movable frame 103 and is located on one side of the movable frame 103. The transmission belt 110 is sleeved on the transmission wheel 108 and the driven wheel 109.

[0027] In this embodiment, the rotation of the transmission wheel 108 can cooperate with the transmission belt 110 to drive the driven wheel 109 to rotate, and the rotation of the driven wheel 109 can drive the connecting shaft 111 to rotate.

[0028] Furthermore, the movable component includes a connecting shaft 111 and a moving wheel 112. The connecting shaft 111 is fixedly connected to the driven wheel 109 and is located on one side of the transmission wheel 108. The moving wheel 112 is fixedly connected to the connecting shaft 111 and contacts the base 101.

[0029] In this embodiment, the rotation of the connecting shaft 111 can drive the rotating wheel 112 to rotate, and the rotation of the rotating wheel 112 can drive the moving frame 103 to move on the base 101.

[0030] Furthermore, the telescopic arm mechanism also includes two cylinders 113, two moving plates 114, and two abutting blocks 115. The two cylinders 113 are rotatably connected to the base 101 and are located on the side of the base 101 near the moving frame 103. The two moving plates 114 are rotatably connected to the base 101 and rotatably connected to the output ends of the two cylinders 113. The two abutting blocks 115 are rotatably connected to the two moving plates 114 and rotatably connected to the base 101.

[0031] In this embodiment, the operation of the two cylinders 113 can drive the movable plate 114 to rotate on the base 101. The rotation of the movable plate 114 can cause the two abutting blocks 115 to disengage from the movable frame 103, or move to a side away from the movable frame 103. The two abutting blocks 115 can limit the movement of the movable frame 103.

[0032] Furthermore, the telescopic arm mechanism also includes two support frames 201, two side support frames 202, multiple moving components, and two lateral components; the two support frames 201 are respectively fixedly connected to the base 101 and are both located on the base 101; the two side support frames 202 are respectively fixedly connected to the base 101 and are respectively located on the side of the base 101 near the support frames 201; the multiple moving components are all disposed at the bottom of the base 101; and the two lateral components are both installed at the bottom of the base 101.

[0033] In this embodiment, two support frames 201 and two side support frames 202 can hold crisscross-shaped and grid-shaped pallets. Multiple moving components can move the pallets on the base 101, and two lateral components can adjust the base 101 laterally. After the pallet is moved to the target position, the lifting component 202 lowers to release the goods, and the lateral components return to zero, completing one adaptation forklift cycle. Throughout the process, the moving components and lateral components are in a semi-enclosed space, reducing the amount of sawdust and dust entering by 90% and extending the maintenance cycle to 1000 hours, achieving high-speed pallet adaptation for narrow vehicle bodies, thin fork arms, and maintenance-free operation.

[0034] Furthermore, the movable component includes a mounting bracket 203 and a roller 204. The mounting bracket 203 is fixedly connected to the base 101 and located at the bottom of the base 101. The roller 204 is rotatably connected to the mounting bracket 203 and located on the mounting bracket 203.

[0035] In this embodiment, the mounting bracket 203 provides mounting conditions for the roller 204, and the roller 204 can drive the base 101 to move.

[0036] Furthermore, the lateral component includes a drive member 205 and a second roller 206. The drive member 205 is fixedly connected to the base 101 and located at the bottom of the base 101. The second roller 206 is fixedly connected to the output end of the drive member 205.

[0037] In this embodiment, the driving component 205 can drive the second roller 206 to rotate, and the rotation of the second roller 206 can drive the base 101 to perform lateral adjustment.

[0038] Furthermore, the two support frames 201 respectively form two mating grooves 207 with the base 101.

[0039] In this embodiment, the two fitting grooves 207 can fit the pallet together, improving the stability and adaptability of the pallet placement.

[0040] Furthermore, the side support 202 has a collision protection strip 208, which is fixedly connected to the side support 202 and located on one side of the side support 202.

[0041] In this embodiment, when the AGV accidentally enters a narrow passage or the pallet sways, the anti-collision strip 208421 first contacts the pallet or shelf to absorb the impact energy.

[0042] When needed, the two cylinders 113 are activated, driving the two movable plates 114 to rotate. The two movable plates 114 then move the two supporting blocks 115 away from the movable frame 103, releasing the limiting effect on the movable frame 103. The motor 105 is then activated, driving the rotating shaft 107 to rotate. The rotating shaft 107 drives the two transmission wheels 108 to rotate. The two transmission wheels 108, in conjunction with the two transmission belts 110, drive the two driven wheels 109 to rotate. The two driven wheels 109 drive the two connecting shafts 111 to rotate. The two connecting shafts 111 drive the two movable wheels 112 to rotate. 12 drives the fork assembly 102 on the moving frame 103 to move towards the side closer to the pallet until the fork assembly 102 contacts the pallet and moves to a preset position. Then, the lifting module 104 drives the fork assembly 102 to lift the pallet away from the ground. After the motor 105 reverses and drives the moving frame 103 to reset, the two cylinders 113 drive the two abutment blocks 115 on the two moving plates 114 to reset and fix the moving frame 103. The lifting module 104 resets and drives the fork assembly 102 to place the pallet on the base 101, thereby solving the problem of large cumulative gap and decreased positioning accuracy with mileage in the existing telescopic arm structure under long stroke.

[0043] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An AGV forklift, comprising a base and a fork assembly, characterized in that, It also includes a telescopic boom mechanism, which comprises a movable frame, a drive assembly, two transmission assemblies, two moving assemblies, and a lifting module; The movable frame is mounted on the base, the lifting module is mounted on the movable frame, the drive assembly is mounted on the movable frame, the two transmission assemblies are respectively connected to the drive assembly and are both mounted on the movable frame, the two movable assemblies are respectively mounted on the two transmission assemblies, and the fork assembly is mounted on the lifting membrane assembly.

2. The AGV forklift as described in claim 1, characterized in that, The drive assembly includes a motor, a reducer, and a rotating shaft. The motor is fixedly connected to the movable frame and located on the movable frame. The reducer is connected to the output end of the motor. The drive shaft is connected to the reducer and rotatably connected to the movable frame.

3. The AGV forklift as described in claim 2, characterized in that, The transmission assembly includes a transmission wheel, a driven wheel, and a transmission belt. The transmission wheel is fixedly connected to the rotating shaft and is located on the rotating shaft. The driven wheel is rotatably connected to the movable frame and is located on one side of the movable frame. The transmission belt is sleeved on the transmission wheel and the driven wheel.

4. The AGV forklift as described in claim 3, characterized in that, The moving component includes a connecting shaft and a moving wheel. The connecting shaft is fixedly connected to the driven wheel and is located on one side of the transmission wheel. The moving wheel is fixedly connected to the connecting shaft and contacts the base.

5. The AGV forklift as described in claim 1, characterized in that, The telescopic arm mechanism also includes two cylinders, two movable plates, and two abutment blocks. The two cylinders are rotatably connected to the base and are located on the side of the base near the movable frame. The two movable plates are rotatably connected to the base and rotatably connected to the output ends of the two cylinders. The two abutment blocks are rotatably connected to the two movable plates and rotatably connected to the base.

6. The AGV forklift as described in claim 1, characterized in that, The telescopic arm mechanism further includes two support frames, two side support frames, multiple moving components, and two lateral components; the two support frames are respectively fixedly connected to the base and are both located on the base; the two side support frames are respectively fixedly connected to the base and are respectively located on the side of the base near the support frames; the multiple moving components are all disposed at the bottom of the base; and the two lateral components are both installed at the bottom of the base.

7. The AGV forklift as described in claim 6, characterized in that, The movable component includes a mounting frame and a first roller. The mounting frame is fixedly connected to the base and located at the bottom of the base. The first roller is rotatably connected to the mounting frame and located on the mounting frame.

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