Liftable structure for AGV

Abstract

A lifting structure for an AGV comprises a mounting frame mounted on the AGV and a lifting frame arranged above the mounting frame, a lifting motor, a rotating shaft, a bearing seat and a lifting mechanism are arranged on the lifting frame, the rotating shaft is arranged on the bearing seat in a penetrating mode, the lifting motor can drive the rotating shaft to rotate, and the lifting mechanism comprises a gear, a rack, a linear guide rail and a mounting seat. The lower portion of the rack is installed on the installation frame, the upper portion of the rack penetrates through the lifting frame, the gear is meshed with the rack, a track of the linear guide rail is connected with the rack, a sliding block of the linear guide rail is connected with the installation base, the installation base is connected with the lifting frame, and the RFID sensor and the magnetic navigation sensor are installed on the lifting frame. According to the utility model, the RFID sensor and the magnetic navigation sensor are lifted, so that the distance between the RFID sensor and the magnetic navigation sensor and the magnetic stripe on the ground ranges from 30mm to 40mm, thereby ensuring that the stability of the magnetic navigation magnetic field is not influenced by the fluctuation of the road surface in the operation process of the AGV.

Description

Technical Field

[0001] The utility model belongs to the technical field of AGV, and in particular relates to a liftable structure for AGV. Background Art

[0002] At present, the navigation methods of AGV include magnetic navigation, laser navigation, QR code navigation, fiber optic inertial navigation, etc. Among them, magnetic navigation is the most commonly used navigation method for AGVs operating indoors.

[0003] Magnetic navigation mainly obtains the position deviation between the vehicle itself and the target tracking path by measuring the magnetic field signal on the path, thereby realizing the control and navigation of the vehicle. Magnetic navigation has high measurement accuracy and good repeatability, and is not easily affected by light changes. During operation, the magnetic sensing system has high reliability.

[0004] The AGV runs stably and efficiently on a well-planned route. Once the magnetic strips are laid, the maintenance cost is low, the service life is long, and it is easy to add or change routes. It can even be applied to some outdoor environments.

[0005] However, the installation height of the magnetic navigation sensor and the RFID sensor needs to be between 30-40mm from the magnetic stripe on the ground. If it is too close, it is easy to collide with the ground, and if it is too far, the magnetic field cannot be sensed. If the ground slope exceeds 2°, it is easy to fail to sense the magnetic stripe when passing the bottom of the slope. The lower plane of the sensor at the top of the slope will rub and collide with the ground, causing losses. Utility Model Content

[0006] In order to overcome the deficiencies of the above-mentioned technology, the purpose of the utility model is to provide a liftable structure for AGV.

[0007] The technical solution adopted by the utility model is: a lifting structure for AGV, including a mounting frame installed on the AGV and a lifting frame arranged above the mounting frame, the lifting frame is provided with a lifting motor, a rotating shaft, a bearing seat and a lifting mechanism, the rotating shaft is penetrated through the bearing seat, the lifting motor can drive the rotating shaft to rotate, the lifting mechanism includes a gear, a rack, a linear guide and a mounting seat, the lower part of the rack is installed on the mounting frame, the upper part of the rack is arranged through the lifting frame, the gear is meshed with the rack, the track of the linear guide is connected to the rack, the slider of the linear guide is connected to the mounting seat, the mounting seat is connected to the lifting frame, and an RFID sensor and a magnetic navigation sensor are installed on the lifting frame.

[0008] Furthermore, the lifting frame is provided with a first reinforcing rib and a second reinforcing rib.

[0009] Furthermore, a motor mounting plate is fixedly mounted on the lifting frame, and the lifting motor is fixedly mounted on the motor mounting plate.

[0010] The beneficial effects of the utility model are as follows: the utility model drives the RFID sensor and the magnetic navigation sensor to rise and fall, so that the distance between the RFID sensor and the magnetic navigation sensor and the magnetic strip on the ground is between 30-40 mm, thereby ensuring that the undulation of the road surface during the operation of the AGV has no effect on the stability of the magnetic navigation magnetic field. By using the utility model, the AGV can adapt to a ground slope of up to 4°. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure in which the lifting frame, the rotating shaft and the lifting motor cooperate;

[0013] Figure 3 It is a structural diagram of the lifting mechanism;

[0014] Figure 4 It is an enlarged schematic diagram of the lifting mechanism. DETAILED DESCRIPTION

[0015] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] like Figures 1 to 4 As shown, a liftable structure for AGV includes a mounting frame 4 installed on the AGV and a lifting frame 11 arranged above the mounting frame 4, a lifting motor 14, a rotating shaft 16, a bearing seat 17 and a lifting mechanism are arranged on the lifting frame 11, the rotating shaft 16 is penetrated on the bearing seat 17, the lifting motor 14 can drive the rotating shaft 16 to rotate, the lifting mechanism includes a gear 21, a rack 210, a linear guide 22 and a mounting seat 23, the lower part of the rack 210 is installed on the mounting frame 4, the upper part of the rack 210 is arranged through the lifting frame 11, the gear 21 is meshed with the rack 210, the track of the linear guide 22 is connected to the rack 210, the slider of the linear guide 22 is connected to the mounting seat 23, the mounting seat 23 is connected to the lifting frame 11, and an RFID sensor 31 and a magnetic navigation sensor 28 are installed on the lifting frame 11.

[0017] When the lifting motor 14 is started, the gear 21 and the rack 210 move relative to each other, so that the lifting frame 11 can be lifted and lowered.

[0018] The lifting frame 11 is provided with a first reinforcing rib 12 and a second reinforcing rib 13, so that the lifting frame 11 is more solid and durable.

[0019] A motor mounting plate 15 is fixedly mounted on the lifting frame 11 , and the lifting motor 14 is fixedly mounted on the motor mounting plate 15 .

[0020] The lifting frame 11 is provided with a first drag chain connection seat 18 and a second drag chain connection seat 27, a drag chain 25 is provided between the first drag chain connection seat 18 and the second drag chain connection seat 27, and both ends of the drag chain 25 are respectively connected to the first drag chain connection seat 18 and the second drag chain connection seat 27. Frequent ascent and descent may cause damage to the wires in the structure, so a drag chain is used for protection, and a spring wire may also be used for a small stroke.

[0021] The bottom surface of the lifting frame 11 is threadedly connected with a plurality of leveling screws 19 , and the bottom surface of the lifting frame 11 is leveled by adjusting the extension length of the leveling screws 19 .

[0022] A tightening screw 24 is threadedly connected to the lifting frame 11, and the tightening screw 24 tightens the mounting seat 23 to prevent the gear rack from loosening.

[0023] Two connecting rod long axes 29 are symmetrically arranged on both sides of the lifting frame 11 . The two connecting rod long axes 29 are connected by a plurality of long axis clamping plates 26 , and a magnetic navigation sensor 28 is arranged on each long axis clamping plate 26 .

[0024] Working principle of the utility model: by driving the RFID sensor 31 and the magnetic navigation sensor 28 to rise and fall, the distance between the RFID sensor 31 and the magnetic navigation sensor 28 and the magnetic strip on the ground is between 30-40mm, so as to ensure that the undulation of the road surface during the operation of the AGV has no effect on the stability of the magnetic navigation magnetic field. By using the utility model, the AGV can adapt to the ground slope up to 4°.

[0025] The above embodiments are based on the technical solution of the present utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the present utility model is not limited to the above embodiments.

Claims

1. A lifting structure for AGV, characterized in that: The invention comprises a mounting frame (4) mounted on an AGV and a lifting frame (11) arranged above the mounting frame (4); a lifting motor (14), a rotating shaft (16), a bearing seat (17) and a lifting mechanism are arranged on the lifting frame (11); the rotating shaft (16) is passed through the bearing seat (17); the lifting motor (14) can drive the rotating shaft (16) to rotate; the lifting mechanism comprises a gear (21), a rack (210), a linear guide rail (22) and a mounting seat (23); the gear The lower part of the rack (210) is installed on the mounting frame (4), the upper part of the rack (210) is arranged through the lifting frame (11), the gear (21) is meshed with the rack (210), the track of the linear guide rail (22) is connected to the rack (210), the slider of the linear guide rail (22) is connected to the mounting seat (23), the mounting seat (23) is connected to the lifting frame (11), and the lifting frame (11) is installed with an RFID sensor (31) and a magnetic navigation sensor (28).

2. The AGV liftable structure according to claim 1, characterized in that: The lifting frame (11) is provided with a first reinforcing rib (12) and a second reinforcing rib (13).

3. The AGV liftable structure according to claim 1, characterized in that: A motor mounting plate (15) is fixedly mounted on the lifting frame (11), and the lifting motor (14) is fixedly mounted on the motor mounting plate (15).

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