Double-layer vertical telescopic rotary pallet fork

Abstract

The utility model discloses a double-layer vertical telescopic rotary pallet fork which comprises a lifting beam, the lower end of the lifting beam is connected with a fixed arm through a rotary bearing, one side of the fixed arm is provided with a fixed seat, the side face of the fixed seat is in sliding fit with a first lifting plate, and the side face of the first lifting plate is in sliding fit with a second lifting plate. Two fork arms are symmetrically arranged on the lower portion of the side face of the second lifting plate. The fixed arm is provided with a speed reducer, the fixed seat is provided with a lead screw nut kinematic pair, the lead screw nut kinematic pair is connected with the first lifting plate, and the speed reducer drives the first lifting plate to ascend and descend through a bevel gear transmission pair and the lead screw nut kinematic pair; the first lifting plate is rotationally connected with a guide chain wheel, and the guide chain wheel is matched with a chain. According to the utility model, the requirements of spatial multi-angle and multi-azimuth loading point positions can be met, the loading is more flexible, the labor intensity of workers is reduced, the loading efficiency is improved, the requirements of vehicle types with different heights are met, and the loading process is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting forks, in particular to a double-layer vertical telescopic rotary fork. Background Art

[0002] Space truss robots, also called gantry robots, are rectangular coordinate robots and are widely used industrial equipment in automated production. They are usually used for loading and unloading of machine tools, material handling, and palletizing. Space truss robots are equipped with forks, which are used to lift and lower the forks to complete material handling. However, the existing fork device cannot be extended or retracted, cannot meet the loading requirements of vehicles of different heights, and cannot rotate. It is not flexible enough when aligning and placing material vehicles, and cannot ensure the fast, accurate, and reliable delivery of material vehicles in the process of automated logistics transportation. This needs to be improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a double-layer vertical telescopic rotary fork that can meet the requirements of multi-angle and multi-directional loading points in space, make loading more flexible, reduce labor intensity, improve loading efficiency, meet the needs of vehicle models of different heights, make the loading process safe and reliable, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-layer vertical telescopic rotary fork, comprising a lifting beam, the lower end of the lifting beam is connected to a fixed arm through a rotary bearing, a fixed seat is provided on one side of the fixed arm, a lifting plate 1 is slidably matched on the side of the fixed seat, a lifting plate 2 is slidably matched on the side of the lifting plate 1, and two fork arms are symmetrically provided on the lower part of the side of the lifting plate 2;

[0005] The fixed arm is provided with a reducer, and the fixed seat is provided with a screw-nut moving pair, the screw-nut moving pair is connected to the lifting plate one, and the reducer drives the lifting plate one to rise and fall through the bevel gear transmission pair and the screw-nut moving pair; the lifting plate one is rotatably connected to a guide sprocket, and the guide sprocket is adapted to be equipped with a chain, one end of the chain is connected to the lower part of the lifting plate two, and the other end of the chain is connected to the fixed seat, and when the lifting plate one is raised or lowered, the lifting plate two is driven to rise and fall through the guide sprocket and the chain.

[0006] Preferably, a motor for driving the slewing bearing to rotate is also provided at the lower end of the lifting beam, and the lifting beam is driven to rise and fall by an external lifting mechanism.

[0007] Preferably, the guide sprockets and chains are each provided with two groups, and one end of the chain is connected to the second lifting plate through a weighing sensor.

[0008] Preferably, a proximity switch for detecting materials is also provided on the side of the second lifting plate.

[0009] Preferably, the fixing seat is provided with a slide rail, and the lifting plate 1 is provided with a slider adapted to the slide rail; the lifting plate 1 is provided with a slide rail, and the lifting plate 2 is provided with a slider adapted to the slide rail.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the reducer drives the lifting plate one to rise and fall along the fixed seat through the bevel gear transmission pair and the screw nut motion pair; when the lifting plate one is raised and lowered, the lifting plate two is driven to rise and fall along the lifting plate one through the guide sprocket and the chain, thereby driving the fork arm to rise and fall; it has a double-layer lifting function and can meet the requirements of a larger operating space; the chain and the lifting plate two are connected through a weighing sensor, and the overload protection function is realized by measuring the change in the chain force; when loading, the fork arm is driven to rotate through the slewing bearing and the motor, which can meet the requirements of multi-angle and multi-directional loading points in space; loading is more flexible, reduces manual labor intensity, improves loading efficiency, meets the requirements of different height models, and makes the loading process safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0013] Figure 3 It is a schematic diagram of the local structure of the utility model.

[0014] In the figure: 1 lifting beam, 2 slewing bearing, 3 motor, 4 fixed seat, 5 fixed arm, 6 lifting plate 1, 7 lifting plate 2, 8 reducer, 9 fork arm, 10 screw nut kinematic pair, 11 guide sprocket, 12 weighing sensor, 13 bevel gear transmission pair, 14 chain. DETAILED DESCRIPTION

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0016] See also Figure 1-3 The utility model provides a technical solution: a double-layer vertical telescopic rotary fork, including a lifting beam 1, the lower end of the lifting beam 1 is connected to a fixed arm 5 through a rotary bearing 2, a fixed seat 4 is provided on one side of the fixed arm 5, a lifting plate 1 6 is slidably matched on the side of the fixed seat 4, a lifting plate 2 7 is slidably matched on the side of the lifting plate 1 6, and two fork arms 9 are symmetrically provided on the lower part of the side of the lifting plate 2 7;

[0017] The fixed arm 5 is provided with a reducer 8, and the fixed seat 4 is provided with a screw nut kinematic pair 10, which is connected to the lifting plate 16. The reducer 8 drives the lifting plate 16 to rise and fall through the bevel gear transmission pair 13 and the screw nut kinematic pair 10; the lifting plate 16 is rotatably connected with a guide sprocket 11, and the guide sprocket 11 is adapted to be equipped with a chain 14, one end of the chain 14 is connected to the lower part of the lifting plate 2 7, and the other end of the chain 14 is connected to the fixed seat 4. When the lifting plate 16 is raised and lowered, the guide sprocket 11 and the chain 14 drive the lifting plate 2 7 to rise and fall;

[0018] It can be understood that the reducer 8 drives the lifting plate 16 to rise and fall along the fixed seat 4 through the bevel gear transmission pair 13 and the screw nut motion pair 10. When the lifting plate 16 is lifted and lowered, the lifting plate 2 7 is driven to rise and fall along the lifting plate 16 through the guide sprocket 11 and the chain 14, thereby driving the fork arm 9 to rise and fall. When the lifting plate 16 is lifted and lowered, the lifting plate 2 7 is also lifted and lowered accordingly. It has a double-layer lifting function and can meet the requirements of a larger operating space. In addition, the fixed arm 5 can rotate through the slewing bearing 2, which can meet the requirements of multi-angle and multi-directional loading points in space, and the loading is more flexible.

[0019] Furthermore, a motor 3 for driving the slewing bearing 2 to rotate is further provided at the lower end of the lifting beam 1. The lifting beam 1 is driven to rise and fall by an external lifting mechanism and is driven to rotate by the motor 3, which is convenient for operation.

[0020] Furthermore, the guide sprocket 11 and the chain 14 are respectively provided with two groups, one end of the chain 14 is connected to the lifting plate 2 7 through the weighing sensor 12, and the chain 14 is connected to the lifting plate 2 7 through the weighing sensor 12, and the overload protection function is realized by measuring the change of the chain force;

[0021] In addition, a proximity switch for detecting materials is provided on the side of the lifting plate 2 7; the fixed seat 4 is provided with a slide rail, and the lifting plate 1 6 is provided with a slider adapted to the slide rail; the lifting plate 1 6 is provided with a slide rail, and the lifting plate 2 7 is provided with a slider adapted to the slide rail, ensuring that the lifting plate 1 6 and the lifting plate 2 7 are lifted vertically.

[0022] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended to include all changes that fall within the meaning and scope of equivalent elements in the content of the present invention.

Claims

1. A double-layer vertical telescopic rotary fork, characterized in that: It comprises a lifting beam (1), the lower end of the lifting beam (1) is connected to a fixed arm (5) via a slewing bearing (2), a fixed seat (4) is provided on one side of the fixed arm (5), a lifting plate 1 (6) is slidably matched on the side of the fixed seat (4), a lifting plate 2 (7) is slidably matched on the side of the lifting plate 1 (6), and two fork arms (9) are symmetrically provided on the lower part of the side of the lifting plate 2 (7); The fixed arm (5) is provided with a reducer (8), and the fixed seat (4) is provided with a screw nut kinematic pair (10). The screw nut kinematic pair (10) is connected to the lifting plate one (6). The reducer (8) drives the lifting plate one (6) to rise and fall through the bevel gear transmission pair (13) and the screw nut kinematic pair (10). The lifting plate one (6) is rotatably connected to a guide sprocket (11). The guide sprocket (11) is adapted to be equipped with a chain (14). One end of the chain (14) is connected to the lower part of the lifting plate two (7), and the other end of the chain (14) is connected to the fixed seat (4). When the lifting plate one (6) is raised or lowered, the guide sprocket (11) and the chain (14) drive the lifting plate two (7) to rise or fall.

2. A double-layer vertical telescopic rotary fork according to claim 1, characterized in that: The lower end of the lifting beam (1) is also provided with a motor (3) for driving the slewing bearing (2) to rotate, and the lifting beam (1) is driven to rise and fall by an external lifting mechanism.

3. The double-layer vertical telescopic rotary fork according to claim 1, characterized in that: The guide sprocket (11) and the chain (14) are each provided with two sets, and one end of the chain (14) is connected to the second lifting plate (7) via a weighing sensor (12).

4. The double-layer vertical telescopic rotary fork according to claim 1, characterized in that: The side of the second lifting plate (7) is also provided with a proximity switch for detecting materials.

5. The double-layer vertical telescopic rotary fork according to claim 1, characterized in that: The fixing seat (4) is provided with a slide rail, and the lifting plate (6) is provided with a slider adapted to the slide rail; the lifting plate (6) is provided with a slide rail, and the lifting plate (7) is provided with a slider adapted to the slide rail.

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