Freight transport vehicle accurate positioning device

Abstract

The utility model discloses a freight transport vehicle accurate positioning device which comprises a fixed seat, a fixed frame and a movable frame are arranged on the side face of the fixed seat in parallel, climbing slopes are arranged on the front side of the fixed frame and the front side of the movable frame, and conveying belts are arranged on the fixed frame and the movable frame. And a conveying belt electric driving mechanism is arranged on the frame, a moving block is arranged at one end of the moving frame and movably clamped in the moving groove of the fixed seat, a lead screw is screwed in the moving block, and one end of the lead screw is connected with a motor. The device is scientific and reasonable in structural design, the movable block is driven by the lead screw and the motor to move in the movable groove, and the distance of the movable frame relative to the fixed frame is adjusted in cooperation with guiding of the guide rod; the conveying belts arranged on the fixed frame and the movable frame are driven by the electric driving mechanism and can actively drive the vehicle to finely adjust the position, manual intervention is reduced, and the positioning efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of freight vehicle positioning equipment, specifically a precise positioning device for freight transport vehicles. Background Technology

[0002] The prerequisite for using robotic arms on highly automated production lines is that items must be positioned precisely to avoid the robotic arm failing to grasp or grasping the wrong items. Currently, the common method is to use transport vehicles to deliver various items to the precise location, then manually calibrate the position and manually fix the transport vehicle in place. Existing freight vehicle positioning technology typically uses fixed positioning structures or manual adjustments, which has the following shortcomings:

[0003] Traditional positioning devices have fixed frame spacing, making them unsuitable for vehicles with different wheelbases. This necessitates multiple sets of equipment, resulting in high costs and cumbersome operation. Vehicle positioning relies on manual pushing or repeated starting and stopping of the vehicle for adjustment, leading to low efficiency and safety hazards. Furthermore, the lack of precise positioning aids means wheel position correction depends on experience, which can easily cause deviations and affect loading or inspection accuracy. Therefore, we propose a precise positioning device for freight transport vehicles. Utility Model Content

[0004] The purpose of this invention is to provide a precise positioning device for freight transport vehicles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precise positioning device for freight transport vehicles, including a fixed base, a fixed frame and a movable frame arranged parallel to each other on the side of the fixed base, a climbing ramp provided on the front side of the fixed frame and the movable frame, a conveyor belt provided on both the fixed frame and the movable frame, and an electric drive mechanism for the conveyor belt provided on the frame, a movable block provided at one end of the movable frame, the movable block being movably engaged in the movable groove of the fixed base, and a lead screw screwed into the movable block, one end of the lead screw being connected to an electric motor, a laser spotlight installed above both the fixed frame and the movable frame, and a lifting mechanism provided on the side of the fixed frame.

[0006] In the above scheme, the fixed frame is fixedly connected to the fixed seat by bolts.

[0007] In the above scheme, the climbing ramp is equipped with anti-slip steps, and the conveyor belt is equipped with detachable anti-slip blocks.

[0008] In the above scheme, the movable block is provided with a threaded hole and a guide hole, and a guide rod is movably inserted into the guide hole.

[0009] In the above scheme, the lifting mechanism includes a lifting plate mounted on a scissor hydraulic lifting mechanism, and the scissor hydraulic lifting mechanism is mounted on a movable base.

[0010] In the above scheme, a support column is provided at the bottom of the mobile frame, and casters are installed below the support column.

[0011] In the above scheme, the lead screw and the fixed seat are rotatably connected by bearings.

[0012] Compared with existing technologies, the advantages of this utility model are as follows: This precise positioning device for freight transport vehicles has a simple and reasonable structural design and strong practicality. It uses a lead screw and motor to drive a moving block to move within a movable slot, guided by a guide rod, to adjust the distance between the moving frame and the fixed frame. Support columns and casters allow for flexible displacement of the moving frame, enabling the device to adapt to freight vehicles with different wheelbases, significantly improving versatility. The conveyor belts on the fixed and moving frames are driven by an electric drive mechanism, actively adjusting the vehicle's position, reducing manual intervention and improving positioning efficiency. Laser spotlights are installed above the fixed and moving frames, projecting light to mark the theoretical positions of the wheels, assisting workers in quickly judging and correcting deviations, thus improving positioning accuracy. The lifting mechanism adjusts the height of the lifting plate through a scissor-type hydraulic lifting mechanism, working with the moving base to achieve dual calibration of the vehicle's height and horizontal position. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a side view of the present invention.

[0015] In the diagram: 1. Fixed base; 11. Fixed frame; 12. Moving frame; 13. Climbing ramp; 14. Anti-slip step; 15. Conveyor belt; 16. Detachable anti-slip block; 17. Conveyor belt electric drive mechanism; 18. Moving block; 19. Movable groove; 2. Screw; 21. Guide rod; 22. Motor; 23. Laser spotlight; 24. Lifting plate; 25. Scissor hydraulic lifting mechanism; 26. Moving base; 27. Support column; 28. Casters. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-2 This utility model provides a technical solution: a precise positioning device for freight transport vehicles, including a fixed base 1, a fixed frame 11 and a movable frame 12 arranged parallel to each other on the side of the fixed base 1, a climbing ramp 13 arranged on the front side of the fixed frame 11 and the movable frame 12, a conveyor belt 15 arranged on both the fixed frame 11 and the movable frame 12, and a conveyor belt electric drive mechanism 17 arranged on the frame, a movable block 18 arranged at one end of the movable frame 12, the movable block 18 being movably engaged in the movable groove 19 of the fixed base 1, and a lead screw 2 screwed into the movable block 18, one end of the lead screw 2 being connected to a motor 22, a laser spotlight 23 installed above both the fixed frame 11 and the movable frame 12, and a lifting mechanism arranged on the side of the fixed frame 11.

[0018] The fixed base 1 serves as the device base, and the fixed frame 11 is fixed by bolts to ensure the stability of the reference. The movable frame 12 is moved by the linkage between the lead screw 2 and the motor 22, and forms a guide limit with the movable groove 19 and the guide rod 21 to prevent the frame from deviating. The electric drive mechanism 17 of the conveyor belt drives the conveyor belt 15 to rotate in both directions, and the wheel can be finely adjusted by the detachable anti-slip block 16. The laser spotlight 23 projects a vertical beam to the ground to mark the theoretical stopping position of the wheel and assist in visual positioning.

[0019] In the above scheme, the fixed frame 11 is fixedly connected to the fixed base 1 by bolts. The bolt connection method facilitates on-site disassembly and maintenance, while ensuring a rigid connection between the fixed frame 11 and the fixed base 1, providing a reference for the adjustment of the movable frame 12.

[0020] In the above scheme, the climbing ramp 13 is equipped with anti-slip steps 14, and the conveyor belt 15 is equipped with detachable anti-slip blocks 16. The anti-slip steps 14 (such as raised corrugated steel plates) increase the friction between the wheels and the ramp, preventing the vehicle from slipping when climbing;

[0021] The detachable anti-slip block 16 (such as a rubber module + bolt fixing) can be replaced or the spacing adjusted according to the wheel size, which enhances the gripping force of the conveyor belt 15 on the wheel and prevents it from spinning idly.

[0022] In the above scheme, the movable block 18 is provided with a threaded hole and a guide hole, and a guide rod 21 is movably inserted into the guide hole. The threaded hole engages with the lead screw 2, converting the rotational motion of the motor 22 into the linear displacement of the movable block 18; the guide hole cooperates with the guide rod 21 to eliminate radial offset in the lead screw transmission and ensure that the movable frame 12 moves in parallel.

[0023] In the above solution, the lifting mechanism includes a lifting plate 24 mounted on a scissor-type hydraulic lifting mechanism 25, and the scissor-type hydraulic lifting mechanism 25 is mounted on a movable base 26. The scissor-type hydraulic lifting mechanism 25 provides a stable vertical lifting force as an existing mechanism, and the height of the lifting plate 24 can be adjusted to accommodate vehicles with different chassis heights; the movable base 26 allows the lifting mechanism to be flexibly moved to the side of the vehicle, expanding the operating coverage area.

[0024] In the above scheme, a support column 27 is provided at the bottom of the movable frame 12, and a caster 28 is installed below the support column 27. The combination of the support column 27 and the caster 28 ensures the flexibility of the movable frame 12 when moving, and provides stable support by locking the caster after positioning.

[0025] In the above scheme, the lead screw 2 and the fixed seat 1 are rotatably connected by bearings.

[0026] Working principle:

[0027] The working process of this precise positioning device for freight transport vehicles is as follows:

[0028] Frame spacing adjustment: Start the motor 22 to drive the lead screw 2 to rotate, causing the moving frame 12 to move closer to or further away from the fixed frame 11, and the light projected by the laser spotlight 23 marks the target wheel spacing position;

[0029] Vehicle guidance phase: Freight vehicles drive up the ramp 13 into the space between the fixed frame 11 and the movable frame 12, and the anti-slip steps 14 prevent the wheels from slipping.

[0030] Wheel position correction: The electric drive mechanism 17 drives the conveyor belt 15 to rotate, moving the wheel to the laser marking area. The detachable anti-slip block 16 prevents the wheel from slipping.

[0031] Lifting Assist Positioning: The movable base 26 moves the lifting mechanism to the side of the vehicle, and the scissor hydraulic lifting mechanism 25 lifts the lifting plate 24 to the predetermined height to assist in adjusting the vehicle's level posture;

[0032] Reset and maintenance: After positioning is completed, the moving frame 12 is reset, the casters 28 are unlocked to move the device, and the detachable anti-slip block 16 can be replaced or cleaned.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision positioning device for freight transport vehicles, comprising a fixed seat (1), characterized in that: The side of the fixed seat (1) is provided with a fixed frame (11) and a moving frame (12) in parallel, the front side of the fixed frame (11) and the moving frame (12) is provided with a climbing slope (13), the fixed frame (11) and the moving frame (12) are provided with a conveyor belt (15), and the frame is provided with a conveyor belt electric drive mechanism (17), one end of the moving frame (12) is provided with a moving block (18), the moving block (18) is movably clamped in the movable groove (19) of the fixed seat (1), and the moving block (18) is screwed with a lead screw (2), one end of the lead screw (2) is connected with a motor (22), the top of the fixed frame (11) and the moving frame (12) is provided with a laser spotlight (23), and the side of the fixed frame (11) is provided with a lifting mechanism.

2. A precision positioning device for a freight transport vehicle as claimed in claim 1, characterized in that: The fixed frame (11) is fixedly connected with the fixed seat (1) through bolts.

3. A precision positioning device for a freight transport vehicle as claimed in claim 1, characterized in that: The climbing slope (13) is provided with anti-skid steps (14), and the conveyor belt (15) is provided with detachable anti-skid blocks (16).

4. A precision positioning device for a freight transport vehicle as claimed in claim 1, characterized in that: The moving block (18) is provided with a threaded hole and a guide hole, and a guide rod (21) is movably inserted into the guide hole.

5. A precision positioning device for a freight transport vehicle as claimed in claim 1, characterized in that: The lifting mechanism comprises a lifting plate (24) installed on a shear type hydraulic lifting mechanism (25), and the shear type hydraulic lifting mechanism (25) is installed on a movable moving base (26).

6. A precision positioning device for a freight transport vehicle as claimed in claim 1, characterized in that: The bottom of the moving frame (12) is provided with a supporting column (27), and the supporting column (27) is installed with a castor (28) below.

7. A precision positioning device for a freight transport vehicle as claimed in claim 1, characterized in that: The lead screw (2) is rotatably connected with the fixed seat (1) through a bearing.

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