Two-point buffering suspension device of oil pressure damper and AGV (Automatic Guided Vehicle) heavy-load vehicle
Through the oil pressure damper two-point buffer suspension device, the problem of dispersed buffer performance and inconvenient maintenance of the McNum wheel suspension device is solved, and the effect of stable shock absorption and convenient maintenance is achieved.
Patent Information
- Application Number
- CN202423280064.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In the prior art, the buffer suspension device of the McNum wheel uses spring and rubber components, and the buffering performance is dispersed, multiple buffering components are required, and maintenance is inconvenient, which affects the stability of the vehicle when a single component fails.
The two-point buffer suspension device of the oil pressure damper is used to connect the McNum wheel through the bracket plate, rotation shaft and damper to limit the rotation angle and reduce the stress point. A single damper is used to achieve concentrated stress. The structure is simple and easy to maintain.
It realizes stable shock absorption of McNum wheels, reduces the space occupied by the suspension device, concentrates stress, is convenient to maintain, and improves the stability and maintenance efficiency of the vehicle.
Smart Images
Figure CN223266568U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle suspension, in particular to a two-point buffer suspension device with an oil pressure damper and an AGV heavy-load vehicle. Background Art
[0002] Mecanum wheels are often used in the chassis design of AGVs, enabling flexible operation and movement in confined spaces. This capability is particularly important for robots that must perform precise operations in environments such as production lines and warehouses. Mecanum wheels are frequently subjected to strong impacts and variable loads in their operating environments, requiring a buffer suspension to maintain vehicle stability. Traditional buffer suspension systems often use simple springs and rubber-based cushioning elements.
[0003] Current technologies have limited cushioning performance of springs and rubber components, resulting in dispersed buffering. Furthermore, heavy-duty AGVs require at least six Mecanum wheels, each equipped with at least two buffer components. When a single buffer component fails, the corresponding Mecanum wheel's cushioning capacity decreases, deteriorating vehicle stability and making repair and maintenance extremely troublesome. Utility Model Content
[0004] In order to make up for the above shortcomings, the utility model provides an AGV heavy-duty vehicle with a two-point buffer suspension device using a hydraulic damper. The device adopts a two-point support to fix the Mecanum wheel, which has a simple structure and is easy to repair and maintain.
[0005] To achieve the above objectives, the present invention provides the following technical solutions:
[0006] A two-point buffer suspension device with a hydraulic damper includes a bracket plate, a motor and a reducer are provided in the middle of the bracket plate, the output shaft of the reducer is connected to the Mecanum wheel, a rotating shaft is fixed to one end of the bracket plate in the horizontal direction, the rotating shaft is connected to the shaft sleeve on the frame, a fixed shaft seat is provided at the other end of the bracket plate in the horizontal direction, the fixed shaft seat is connected to the damper, and an adjustable shaft seat is provided at the other end of the damper, and the adjustable shaft seat is fixed to the frame.
[0007] Furthermore: a limiting protrusion is provided at the bottom of the bracket plate below the rotating shaft, and a lower limiting block is provided on the vehicle frame corresponding to the limiting protrusion.
[0008] Furthermore: an adjusting screw is provided on the lower limit block, and the adjusting screw is locked on the lower limit block through a positioning nut.
[0009] Further: the adjustable shaft connection seat includes a fixed guide block and a movable guide block, a guide groove is provided at the bottom of the fixed guide block, the movable guide block is arranged in the guide groove, the movable guide block is connected to the damper shaft, a bolt assembly is provided between the fixed guide block and the movable guide block, and the fixed guide block is fixed on the frame.
[0010] Further: the bolt assembly includes a fixing bolt and an abutting bolt, the fixing bolt passes through the fixed guide block and is threadedly connected to the movable guide block, a locking nut is provided on the fixing bolt, and the abutting bolt is threadedly connected to the fixed guide block and is used to abut the movable guide block.
[0011] Furthermore: a shaft connecting groove is provided at the bottom of the movable guide block.
[0012] Furthermore: an avoidance hole is provided on the vehicle frame corresponding to the motor.
[0013] An AGV heavy-load vehicle adopts any one of the suspension devices described above.
[0014] The utility model has the following beneficial effects:
[0015] In the utility model, a bracket plate is used as a central force-bearing component, and a rotating shaft and a damper are used at both ends to connect with the frame. During use, the rotating shaft can ensure that the bracket plate can only rotate along the R-axis direction. Furthermore, the rotation angle is limited by the damper to achieve the limitation and shock absorption of the Mecanum wheel. The utility model has few parts connected to the frame, and the assembly is convenient and reliable. The size of the device along the axial direction of the Mecanum wheel is small, the force is concentrated, and the shock absorption can be completed by a single damper, which is easy to repair and maintain. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of the suspension device of the present utility model;
[0017] Figure 2 This is a schematic diagram of the installation of the utility model on a vehicle frame;
[0018] Figure 3 This is a schematic diagram of the suspension structure of the utility model;
[0019] Figure 4 This is a schematic diagram of the lower limit structure of the suspension of the utility model;
[0020] Figure 5 This is a schematic diagram of the entire vehicle structure of the present utility model. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] Reference Figures 1-4 , the utility model provides an embodiment: an AGV heavy-duty vehicle with a two-point buffer suspension device of a hydraulic damper, comprising a bracket plate 112, a motor 1 and a reducer 2 are arranged in the middle of the bracket plate, the output shaft of the reducer is connected to the Mecanum wheel 3, the motor and the reducer cooperate to drive the Mecanum wheel to rotate, a rotating shaft 4 is fixed on one end of the bracket plate in the horizontal direction, the rotating shaft is connected to the shaft sleeve 5 on the frame 113, and the axial position of the rotating shaft is limited by a retaining spring, so that the rotating shaft can only rotate on its own, the bracket plate is initially limited to the frame, a fixed shaft connection seat 6 is provided at the other end of the bracket plate in the horizontal direction, the fixed shaft connection seat is connected to the damper 7, and an adjustable shaft connection seat 8 is provided at the other end of the damper, which is fixed to the frame, and the damper can effectively limit the rotation angle of the rotating shaft. The setting position of the damper between the frame and the Mecanum wheel can be adjusted through the adjustable shaft connection seat to adjust the ground clearance of the frame.
[0023] During use, the weight of the frame is applied to the rotating shaft and damper. The rotating shaft cannot deform, and its weight is transferred to the damper through the bracket plate. The Mecanum wheel in the middle of the bracket plate acts as a fulcrum, a seesaw principle. The damper is compressed, and during this process, the bracket plate rotates along the rotating shaft's R axis until the damper is balanced. This process provides a clear force direction, ensuring stability and reliability, a simple structure, and ease of maintenance. Since only one damper is required, it takes up less space in the entire suspension, effectively reducing the suspension's axial size along the motor axis and resulting in a compact structure.
[0024] For the adjustable shaft connection, after the suspension device is installed, it can adjust the compression amount of the damper, that is, adjust the position of the damper between the bracket plate and the frame. The adjustable shaft connection includes a fixed guide block 13 and a movable guide block 14. A guide groove 15 is provided at the bottom of the fixed guide block. The movable guide block is arranged in the guide groove. The movable guide block is connected to the damper shaft. A bolt assembly is provided between the fixed guide block and the movable guide block. The fixed guide block is fixed on the frame. It has a simple structure, convenient operation, and a fine-tuning effect.
[0025] Specifically, the above-mentioned bolt assembly includes a fixing bolt 16 and an abutting bolt 17. The fixing bolt passes through the fixed guide block and is threadedly connected to the movable guide block. A locking nut 18 is provided on the fixing bolt. The abutting bolt is threadedly connected to the fixed guide block and is used to abut the movable guide block. Through the cooperation of the fixing bolt and the abutting bolt, the position between the fixed guide block and the movable guide block can be effectively fixed. The fixing bolt provides an upward force to the movable guide block, and the abutting bolt provides a downward force to the movable guide block. The two offset each other to achieve clamping and fixation.
[0026] To adjust the pre-compression of the damper, a limiting protrusion 9 and a lower limiting block 10 are provided. The limiting protrusion is located at the bottom of the bracket plate below the rotating shaft, and the lower limiting block is located on the vehicle frame corresponding to the limiting protrusion. During the rotation of the rotating shaft, the limiting protrusion of the bracket plate contacts the lower limiting block to achieve the lower limit. Adjustment of the bolt assembly can compress or release the damper, thereby adjusting the damper.
[0027] In order to provide a larger adjustment range, an adjusting screw 11 is provided on the lower limit block, and the adjusting screw is locked on the lower limit block by a positioning nut 12. The extension or retraction of the adjusting screw can make the limiting protrusion move away from or close to the lower limit block, so that the rotation angle range of the bracket plate can be reduced or increased. The change in angle makes the damper stroke adjustable.
[0028] The bottom of the movable guide block is provided with a shaft connection groove 19, the end of the damper is located in the shaft connection groove and is connected to the movable guide block, effectively reducing the size of the structure. The frame corresponding to the motor is provided with an avoidance hole to avoid the installation of the motor.
[0029] The utility model also discloses an AGV heavy-duty vehicle, referring to Figure 5 As shown, the above-mentioned suspension device 111 is adopted, and three suspension devices are respectively provided on both sides of the frame, which are supported in pairs. Although there are many suspension devices, the number of dampers used is small, and the structure is compact and the force is stable, which is suitable for use on heavy-loaded vehicles.
[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A two-point buffer suspension device with a hydraulic damper, characterized by: It includes a bracket plate, a motor and a reducer are provided in the middle of the bracket plate, the output shaft of the reducer is connected to the Mecanum wheel, a rotating shaft is fixed on one end of the bracket plate in the horizontal direction, the rotating shaft is connected to the shaft sleeve on the frame, a fixed shaft seat is provided at the other end of the bracket plate in the horizontal direction, the fixed shaft seat is connected to the damper, and an adjustable shaft seat is provided at the other end of the damper, and the adjustable shaft seat is fixed to the frame.
2. The two-point buffer suspension device with a hydraulic damper according to claim 1, characterized in that: A limiting convex portion is provided at the bottom of the bracket plate below the rotating shaft, and a lower limiting block is provided on the vehicle frame corresponding to the limiting convex portion.
3. The two-point buffer suspension device with a hydraulic damper according to claim 2, characterized in that: The lower limit block is provided with an adjusting screw, and the adjusting screw is locked on the lower limit block through a positioning nut.
4. The oil damper two-point buffer suspension device according to claim 1, characterized in that: The adjustable shaft connection seat includes a fixed guide block and a movable guide block. A guide groove is provided at the bottom of the fixed guide block. The movable guide block is arranged in the guide groove. The movable guide block is connected to the damper shaft. A bolt assembly is provided between the fixed guide block and the movable guide block. The fixed guide block is fixed on the vehicle frame.
5. The oil damper two-point buffer suspension device according to claim 4, characterized in that: The bolt assembly includes a fixing bolt and an abutting bolt. The fixing bolt passes through the fixed guide block and is threadedly connected to the movable guide block. A locking nut is provided on the fixing bolt. The abutting bolt is threadedly connected to the fixed guide block and is used to abut the movable guide block.
6. The oil damper two-point buffer suspension device according to claim 4, characterized in that: A shaft connecting groove is provided at the bottom of the movable guide block.
7. The oil damper two-point buffer suspension device according to claim 1, characterized in that: An avoidance hole is provided on the vehicle frame corresponding to the motor.
8. An AGV heavy-duty vehicle, characterized by: A suspension device according to any one of claims 1 to 7 is used.