A new type of latent lift AGV for automobile painting and repair area

Abstract

The utility model discloses a new type of latent lifting AGV for automobile painting minor repair area, including a vehicle body, a lifting mechanism and a lifting platform. The lifting platform is arranged above the vehicle body, the lifting mechanism is used to lift the load on the lifting platform, a camera is installed at the geometric center of the vehicle body, main caster assemblies are installed at the four corners above the vehicle body, and steering wheels are installed diagonally and symmetrically on the vehicle body. The latent lifting AGV includes three major parts: a vehicle body, a lifting mechanism and a lifting platform. The lifting mechanism is used to lift the load on the lifting platform, with low investment, convenient construction, high flexibility, convenient maintenance and low maintenance cost.

Description

Technical Field

[0001] The utility model relates to a latent lifting AGV, in particular to a novel latent lifting AGV used in a small repair area of ​​automobile painting. Background Art

[0002] The existing production line form is roller bed conveyor, which has the following disadvantages:

[0003] (1) The investment and on-site construction are large. Roller bed conveying is carried out through the docking and circulation between roller beds, which is cumbersome in terms of the cost of buffer storage space and circulation, and will increase the manpower and material costs on site.

[0004] (2) Low flexibility. Once the roller bed rail conveyor is installed and fixed, it has low flexibility and a relatively simple running route.

[0005] (3) Inconvenient maintenance. Once a problem occurs in the roller bed, it needs to be repaired and maintained. The entire production line will be shut down for repair. The entire production line can only be put into production after the problem is eliminated.

[0006] (4) High maintenance cost. The replacement of roller bed parts and maintenance requires the entire line to be shut down, which is troublesome and requires long downtime.

[0007] In view of the shortcomings of the above-mentioned conveying methods, it is urgent to provide a new type of latent lifting AGV for painting small repair areas. Summary of the invention

[0008] In order to solve the problem of large investment and low flexibility caused by the transportation form, the utility model provides a new type of latent lifting AGV for automobile painting small repair area. With jacking function, intelligent navigation and obstacle avoidance function, it meets the needs of flexible manufacturing of line length, and has the characteristics of low investment and convenient on-site construction.

[0009] The utility model provides the following technical solutions:

[0010] A new type of latent lifting AGV for automobile painting and minor repair areas includes a vehicle body, a lifting mechanism and a lifting platform. The lifting platform is arranged above the vehicle body, and the lifting mechanism is used to lift the load on the lifting platform. A camera is installed at the geometric center of the vehicle body, main caster assemblies are installed at the four corners above the vehicle body, and steering wheels are symmetrically installed diagonally on the vehicle body. The lifting mechanism includes multiple screw lifting modules, synchronous belts and rollers. A lifting rod is arranged in the middle of the screw lifting module, and a roller is installed at the bottom of the lifting rod. A synchronous belt is sleeved on the roller, and the synchronous belt is driven and pulled by a lifting servo motor.

[0011] Furthermore, a linear guide rail is arranged on the back of the screw lifting module, a pair of linear rollers are arranged on the linear guide rail, and a synchronous belt is wound around the sides of the two linear rollers.

[0012] Furthermore, a sheet metal shell is installed around the vehicle body, a battery for providing power to the AGV is installed on the vehicle body, and antennas are installed on the four corners of the vehicle body.

[0013] Furthermore, a touch screen button assembly is installed on the side of the sheet metal shell, emergency stop indicator lights are installed at the front and rear corners of the sheet metal shell, and a charging brush plate is installed on the front and rear sides of the sheet metal shell.

[0014] Furthermore, a safety laser is installed diagonally on the vehicle body.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the latent lifting AGV comprises three major parts: a vehicle body, a lifting mechanism and a lifting platform, and the lifting mechanism is used to lift the load on the lifting platform.

[0016] (1) Low investment and convenient construction: The utility model is designed as an independent vehicle body, and only WIFI and 5G network communications need to be provided on site.

[0017] (2) High degree of flexibility: The AGV is equipped with a safety laser device to achieve navigation and obstacle avoidance. It automatically navigates to each workstation according to the dispatch model and automatically switches to QR code navigation when entering a location that requires precise positioning.

[0018] (3) Convenient maintenance and low maintenance cost: The utility model adopts an independent modular design of the vehicle body, which can be maintained offline. During offline maintenance, only the response module needs to be replaced to quickly put it into use. At the same time, some AGVs can be equipped as backup and can be quickly put into use when the AGV is offline for maintenance. The modular design allows the response module and components to be replaced by removing the maintenance sheet metal during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is the appearance diagram of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the jacking platform of the utility model.

[0022] Figure 4 It is a structural schematic diagram of the jacking mechanism of the utility model.

[0023] Figure 5 It is a structural schematic diagram of the vehicle body of the utility model.

[0024] Figure 6 It is a structural schematic diagram of the bottom surface of the vehicle body of the utility model.

[0025] Figure 7 This is a schematic diagram of the working principle of the AGV of the present utility model.

[0026] In the figure:

[0027] 1. Lifting platform; 2. Rubber pad on table; 3. Charging brush plate; 4. Battery; 5. Sheet metal shell; 6. Vehicle body; 7. Antenna; 8. Steering wheel; 9. Main caster assembly; 10. Emergency stop indicator light; 11. Touch screen button assembly; 12. Safety laser; 13. Camera; 14. Lifting mechanism;

[0028] 141. Screw lifting module, 142. Synchronous belt, 143. Roller, 144. Lifting rod, 145. Lifting servo motor, 146. Linear guide rail, 147. Linear roller. Implementation

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1 , 2 , 3, 5, the utility model is a new type of latent lifting AGV for automobile painting and minor repair areas, including a vehicle body 6, a lifting mechanism 14 and a lifting platform 1, the lifting platform 1 is arranged above the vehicle body 6, the lifting mechanism 14 is used to lift the load on the lifting platform 1, a camera 13 is installed at the geometric center of the vehicle body 6, main caster assemblies 9 are installed at the four corners above the vehicle body 6, and steering wheels 8 are installed diagonally symmetrically on the vehicle body 6.

[0031] Figure 4 As shown, the lifting mechanism 14 includes multiple screw lifting modules 141, synchronous belts 142 and rollers 143. A lifting rod 144 is arranged in the middle of the screw lifting module 141, and a roller 143 is installed at the bottom of the lifting rod 144. A synchronous belt 142 is sleeved on the roller 143, and the synchronous belt 142 is driven by a lifting servo motor 145.

[0032] A linear guide rail 146 is disposed on the back of the screw lifting module 141 , a pair of linear rollers 147 are disposed on the linear guide rail 146 , and the synchronous belt 142 is wound around the sides of the two linear rollers 147 .

[0033] The lifting mechanism 14 adopts multiple self-made screw lifting modules 141, and the lifting rod 144 is arranged in a straight line in the center. The lifting rod 144 is a spiral screw, which is driven by a synchronous belt 142 and a roller 143 to achieve synchronous lifting. The lifting servo motor 145 provides sufficient driving force for the lifting mechanism to achieve the lifting and lowering functions. The back linear guide 146 provides the lifting mechanism with the ability to resist off-center load.

[0034] The body 6 is made of high-strength steel Q345B welded and tempered to relieve stress, and the body serves as the load-bearing body of the entire AGV.

[0035] The main caster assemblies 9 are installed at the four corners above the vehicle body 6, and the steering wheels 8 are installed diagonally and symmetrically on the vehicle body 6 ( Figure 6 As shown), the main caster assembly 9 and the steering wheel 8 play the main load-bearing function, bearing the vehicle body weight of 1.1 tons and the load of 1.2 tons, with a total load of 2.3 tons; a sheet metal shell 5 is installed around the vehicle body 6.

[0036] The camera 13 is installed at the geometric center of the AGV to recognize the ground QR code and realize QR code navigation and precise positioning.

[0037] There are two sets of steering wheels 8, which are easy to control and flexible to rotate. The steering wheels can be used to directly carry the vehicle body and also provide driving force for the AGV to travel.

[0038] The vehicle body 6 is provided with a battery 4, which is a low voltage 48V battery and can provide electric energy for the AGV. The vehicle body 6 is provided with an antenna 7 at the four corners.

[0039] A touch screen button assembly 11 is installed on the side of the sheet metal housing 5, emergency stop indicator lights 10 are installed at the front and rear corners of the sheet metal housing 5, and a charging brush plate 3 is installed on the front and rear sides of the sheet metal housing. The charging brush plate 3 cooperates with the on-site charger to automatically charge the AGV.

[0040] The safety laser device 12 is installed diagonally on the vehicle body. A single laser can achieve a 275° scan. A diagonal installation can achieve a 360° full-range scan. The scanning area can be customized through software to achieve navigation and obstacle avoidance.

[0041] A safety touch edge is installed at the bottom of the vehicle body. When the safety touch edge touches an object, a signal is triggered and the AGV immediately slows down and stops.

[0042] The main body of the lifting platform 1 is made of thick-walled rectangular tubes. The square tubes are low-alloy high-strength steel Q345B. After welding, they are tempered to relieve stress. All processing and assembly surfaces are processed after welding. The platform is reserved with threaded holes for lifting. The table rubber pad 2 of the lifting platform 1 is made of polyurethane. There is an RFID on the lifting platform to read the information of the sled, and 4 limit blocks guide and limit the sled.

[0043] Principle description:

[0044] This AGV consists of two main parts: mechanical and electrical. The mechanical part includes the body, sheet metal, lifting mechanism, lifting platform and other mechanical devices. The electrical part includes PLC main control, servo motor, emergency stop indicator light, antenna peripheral accessories. It is a mechatronics product that also includes software scheduling applications.

[0045] AGV drives in each workstation according to the instructions of the dispatching system and the actual production situation on site. When driving, the safety laser instrument scans the fixed scene on site in advance. The software can plan the route and area range according to the actual requirements. Laser SLAM navigation can be used for the flow between workstations. Precise positioning is required when entering and exiting the workstation. The camera at the bottom recognizes the ground QR code and automatically switches the navigation mode to a more accurate QR code navigation. The PLC main control program has a built-in AGV body program, which can automatically move forward, backward, turn, and move sideways, automatically navigate with laser, automatically navigate with QR code, and automatically lift and lower. According to the current operation situation, it automatically switches to display the three-color light status and is accompanied by sound and light prompts or alarms. The PLC controls the servo driver and sends a signal to the servo driver. The servo driver issues the final command to the servo motor, and the mechanical transmission mechanism is used to send the lifting screw to realize the lifting and walking operations. The above communication methods are all through on-site WIFI or 5G signal communication.

[0046] Figure 7 As shown, the AGV automatically navigates to the exit station. When entering, the lifting platform is in a descending state. After entering the station and recognizing the ground QR code for precise positioning, the AGV performs the lifting action. At this time, the lifting platform lifts the on-site skid and the car above and leaves the station; according to the dispatching instructions, the AGV automatically runs to the storage area or directly transports it to the spot repair or masking repair paint. It uses laser SLAM navigation to navigate between stations. After entering the station, it automatically switches to QR code navigation to achieve precise positioning; the AGV will also deliver the repaired car body to the exit station according to the dispatching instructions. According to the actual production needs on site, the transportation is flexible, and multiple storage stations are provided without occupying a large space.

[0047] The utility model has the following characteristics:

[0048] (1) High degree of automation and flexibility. AGV adopts an independent integrated body design. You only need to set up WIFI and 5G signal sources on site to realize communication operations with AGV. AGV has built-in 360° navigation and obstacle avoidance functions. It can plan maps and routes according to site requirements and realize automatic navigation. Where precise positioning is required, you only need to stick a ribbon or QR code on the bottom. AGV will automatically switch the navigation mode for precise positioning.

[0049] (2) The initial planning requires little investment and has low risk. The initial planning only requires leaving space for the car and the supporting skid. The AGV can be customized and developed according to the requirements and will not take up most of the space. The initial planning only requires planning based on the size of the car and the supporting skid to realize the circulation of the car body on site.

[0050] (3) Easy maintenance. AGV adopts an independent integrated body design, which can be repaired and maintained offline. Some AGVs are reserved on site as buffer stations. If the AGV on the line needs maintenance, the buffer AGV can be added immediately without stopping the entire line for maintenance. AGV adopts a modular design and has fault self-detection. It only needs to replace components and mechanical parts according to requirements.

[0051] (4) Easy debugging. After the communication and scheduling are established during on-site debugging, and after the stand-alone machine is debugged, each AGV program can be configured with the same parameters. At the workstation where precision is required, the color ribbon and QR code tape can be pasted on the bottom surface. The method of pasting the color ribbon and QR code tape is also very convenient. Use a laser level to mark the line on the bottom surface and the reference plates on both sides of the workstation to paste the color ribbon and code tape symmetrically. The left and right accuracy of the AGV is adjusted according to the pasting accuracy of the color ribbon and QR code tape. The front and rear accuracy can automatically identify the QR code tape to obtain the current position and adjust the parameters.

[0052] (5) High degree of intelligence. During operation, the AGV will automatically identify obstacles and provide safety protection. When encountering an obstacle, it will automatically stop and issue an audible and visual alarm to inform on-site personnel.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of latent lifting AGV for automobile painting and repair area, characterized by: The invention comprises a vehicle body (6), a lifting mechanism (14) and a lifting platform (1). The lifting platform (1) is arranged above the vehicle body (6). The lifting mechanism (14) is used to lift the load on the lifting platform (1). A camera (13) is installed at the geometric center of the vehicle body (6). Main caster assemblies (9) are installed at four corners above the vehicle body (6). A steering wheel (8) is installed diagonally and symmetrically on the vehicle body (6). The lifting mechanism (14) comprises a plurality of screw lifting modules (141), a synchronous belt (142) and a roller (143). A lifting rod (144) is arranged in the middle of the screw lifting module (141). A roller (143) is installed at the bottom of the lifting rod (144). A synchronous belt (142) is sleeved on the roller (143). The synchronous belt (142) is driven and pulled by a lifting servo motor (145).

2. According to claim 1, a new type of latent lifting AGV for automobile painting and repair area is characterized in that: A linear guide rail (146) is arranged on the back of the screw rod lifting module (141), a pair of linear rollers (147) are arranged on the linear guide rail (146), and the synchronous belt (142) is wound around the sides of the two linear rollers (147).

3. According to claim 1, a new type of latent lifting AGV for automobile painting and repair area is characterized in that: A sheet metal shell (5) is installed around the vehicle body (6), a battery (4) for providing electric energy to the AGV is installed on the vehicle body (6), and antennas (7) are installed on the four corners of the vehicle body (6).

4. The novel latent lifting AGV for automobile painting and minor repair area according to claim 3 is characterized in that: A touch screen button assembly (11) is installed on the side of the sheet metal housing (5), emergency stop indicator lights (10) are installed at the front and rear corners of the sheet metal housing (5), and a charging brush plate (3) is installed on the front and rear sides of the sheet metal housing (5).

5. According to claim 1, a new type of latent lifting AGV for automobile painting and repair area is characterized in that: A safety laser device (12) is installed diagonally on the vehicle body (6).

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