A telescopic arm structure of an AGV fork truck

Abstract

The utility model relates to telescopic arm technical field, concretely relates to a telescopic arm structure of AGV fork truck, including base, prong assembly and telescopic arm mechanism, telescopic arm mechanism includes moving frame, drive component, two transmission components, two moving components and lifting module, and the drive component is started, and drive component drives two transmission components to rotate, and two transmission components drive two moving components to rotate, and two moving components drive prong assembly on moving frame to move to the side close to the stack board, until prong assembly contacts with stack board and moves to the preset position, after, lifting module works and drives prong assembly to lift to the side away from ground to the preset height, after, drive component reverse drive prong assembly drives stack board to move to the side close to base, after, lifting module resets, places stack board on base to solve the problem that the existing telescopic arm structure accumulates big clearance under long stroke and positioning accuracy decays with mileage.

Description

Technical Field

[0001] This utility model relates to the field of telescopic boom technology, and in particular to a telescopic boom structure for an AGV forklift. Background Technology

[0002] Current AGV forklift telescopic boom structures 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. Extension and retraction are achieved by a servo motor driving a sprocket-chain mechanism via a reducer. 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. Utility Model Content

[0004] The purpose of this invention is to provide a telescopic boom structure for AGV forklifts, which aims to solve the problem that existing telescopic boom structures have large cumulative gaps and decreased positioning accuracy with mileage during long strokes.

[0005] To achieve the above objectives, this utility model provides a telescopic boom structure for an AGV forklift, including a base, a fork tooth assembly, and a telescopic boom mechanism. The telescopic boom mechanism includes a moving frame, a drive assembly, two transmission assemblies, two moving assemblies, and a lifting module. The moving frame is mounted on the base, the lifting module is mounted on the moving frame, the drive assembly is mounted on the moving frame, the two transmission assemblies are respectively connected to the drive assembly and are both mounted on the moving frame, the two moving assemblies are respectively mounted on the two transmission assemblies, and the fork tooth 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 rotating 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] This utility model discloses a telescopic boom structure for an AGV forklift. The base provides the installation conditions for the telescopic boom mechanism. When needed, the drive assembly is activated, which drives two transmission assemblies to rotate. The two transmission assemblies drive two moving assemblies to rotate, and the two moving assemblies drive the fork tooth assembly on the moving frame to move towards the pallet until the fork tooth assembly contacts the pallet and moves to a preset position. Then, the lifting module drives the fork tooth assembly to lift it away from the ground to a preset height. After that, the drive assembly reverses and drives the fork tooth assembly to move the pallet towards the base. Then, the lifting module resets and places the pallet on the base. This solves the problem of large cumulative gaps and decreased positioning accuracy with mileage in existing telescopic boom structures over long strokes. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is a schematic diagram of the telescopic boom structure of an AGV forklift according to this utility model.

[0013] Figure 2 This is a cross-sectional view of the telescopic boom structure of an AGV forklift according to this utility model.

[0014] Figure 3 This is a side view of the telescopic boom structure display cylinder of an AGV forklift according to the present invention.

[0015] 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. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown 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 this utility model, and should not be construed as limiting this utility model.

[0017] Please see Figures 1-3 This utility model provides a telescopic boom structure for an AGV forklift, including a base 101, a fork tooth assembly 102, and a telescopic boom mechanism. The telescopic boom 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 tooth assembly 102 is mounted on the lifting module 104.

[0018] 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.

[0019] 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 rotating shaft 107 is connected to the reducer 106 and is rotatably connected to the movable frame 103.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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. A telescopic boom structure for an AGV forklift, comprising a base and a fork tooth 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 module.

2. The telescopic boom structure of 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 rotating shaft is connected to the reducer and rotatably connected to the movable frame.

3. The telescopic boom structure of 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 telescopic boom structure of 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 telescopic boom structure of 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.

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