Road roller steering angle feedback device
Patent Information
- Application Number
- CN202522321059.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-31
AI Technical Summary
目前压路机的转向角度多采用机械限位，如利用油缸自身行程和车架安装挡块，无法精确控制转向角度，并且最大转向角度时机械限位会产生一定冲击，影响油缸的使用寿命
[0012]本实用新型提供一种压路机转向角度反馈装置，此装置是基于连杆机构与角度传感器组成的，能够实现压路机精准控制转向角度，提高施工效果，并且可以避免最大转向角度时由机械限位引起的冲击对油缸的损伤，能延长油缸的使用寿命。
Smart Images
Figure CN224782096U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of steering control technology, and in particular to a steering angle feedback device for a road roller. Background Technology
[0002] With the rapid development of the construction industry, road construction requires strict control over technical indicators and construction processes, leading to a continuous increase in the use of road rollers. During construction, the steering of the road roller frame is unavoidable, and the construction effect is affected by its precision. Currently, the steering angle of road rollers mostly uses mechanical limits, such as those based on the cylinder's own stroke and frame-mounted stops. However, this method cannot precisely control the steering angle, and at the maximum steering angle, the mechanical limit will generate a certain impact, affecting the service life of the cylinder. Utility Model Content
[0003] The purpose of this application is to provide a road roller steering angle feedback device to achieve precise control of the steering angle.
[0004] To achieve the above objectives, this application employs the following technical solution: This utility model provides a road roller steering angle feedback device, including a fixed bracket, a connecting rod, a movable rod, a bracket, an angle sensor, and a hydraulic cylinder; One end of the connecting rod is connected to the fixed bracket, and the other end is connected to one end of the movable rod. The other end of the movable rod is connected to an angle sensor; The angle sensor is fixedly mounted on the bracket; The bracket is provided with a first connecting part for connecting to a first external structure; The fixed bracket is provided with a second connecting part for connecting to the second external structure; The hydraulic cylinder is equipped with a sensor.
[0005] Optionally, the first connecting part is a frame articulation seat.
[0006] Optionally, the second connecting part is a vehicle frame.
[0007] Optionally, the fixed bracket includes a positioning hole and a connecting rod mounting hole. The positioning hole is used to fix the fixed bracket to the vehicle frame with fasteners. The connecting rod mounting hole is fixedly connected to the connecting rod. The distance between the connecting rod mounting hole and the center of the vehicle frame hinge seat is a fixed value.
[0008] Optionally, the connecting rod includes a first stud and a second stud, the first stud being connected to a fixed bracket and the second stud being connected to the movable rod.
[0009] Optionally, the length of the movable rod is equal to the distance between the connecting rod mounting hole and the center of the frame hinge seat, and the movable rod is connected to the angle sensor via a pin.
[0010] Optionally, the bracket is an L-shaped bent plate, including a vertical end and a horizontal end. The horizontal end is used to install an angle sensor, and the vertical end is welded to the frame hinge seat. The center of the angle sensor coincides with the rotation center axis of the frame hinge seat.
[0011] Optionally, the hydraulic cylinder with sensors controls the frame steering and provides travel information, and the angle sensor is used to provide steering information. Beneficial effects
[0012] This utility model provides a steering angle feedback device for a road roller. This device is based on a linkage mechanism and an angle sensor, which can enable precise control of the steering angle of the road roller, improve the construction effect, and avoid damage to the hydraulic cylinder caused by the impact of mechanical limit at the maximum steering angle, thus extending the service life of the hydraulic cylinder. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the assembly structure of the steering angle feedback device for a road roller. Figure 2 This is a schematic diagram of the fixed support structure; Figure 3 This is a schematic diagram of the connecting rod structure; Reference numerals in the attached drawings: 1. Fixed bracket, 1-1. Positioning hole, 1-2. Connecting rod mounting hole, 2. Connecting rod, 2-1. First stud, 2-2. Second stud, 3. Movable rod, 4. Angle sensor, 5. Bracket, 6. Hydraulic cylinder, 7. Frame hinge seat, 8. Frame. Detailed Implementation
[0014] The present invention will be further described below with reference to specific embodiments. Example 1
[0015] like Figure 1 As shown, this embodiment provides a road roller steering angle feedback device, including a fixed bracket 1, a connecting rod 2, a movable rod 3, a bracket 5, an angle sensor 4, and a hydraulic cylinder 6; one end of the connecting rod 2 is connected to the fixed bracket 1, and the other end is connected to one end of the movable rod 3; the other end of the movable rod 3 is connected to the angle sensor 4; the angle sensor 4 is fixedly installed on the bracket 5; the bracket 5 is connected to the road roller frame hinge seat 7; the other end of the fixed bracket 1 is connected to the frame 8; the hydraulic cylinder 6 is equipped with a sensor to provide the stroke information of the hydraulic cylinder 6, and the steering control of the frame 8 is realized through a corresponding control system.
[0016] like Figure 2As shown, the fixed bracket 1 includes two positioning round holes 1-1 and a connecting rod mounting hole 1-2. The positioning round holes 1-1 fix the fixed bracket 1 to the vehicle frame 8 with fasteners. The connecting rod mounting hole 1-2 is fixedly connected to the connecting rod 2. The distance between the connecting rod mounting hole 1-2 and the center of the vehicle frame hinge seat 7 is a fixed value, serving as a driving rod of the linkage mechanism.
[0017] like Figure 3 As shown, the connecting rod 2 includes a first stud 2-1 and a second stud 2-2. The first stud 2-1 is connected to the fixed bracket 1, and the second stud 2-2 is connected to the movable rod 3. Both are locked together by fasteners.
[0018] The length of the movable rod 3 is equal to the distance between the center of the connecting rod mounting hole 1-2 and the center of the frame hinge seat 7. The movable rod 3 is connected to the angle sensor 4 through a pin and serves as a driven rod of the linkage mechanism.
[0019] The bracket 5 is an L-shaped bent plate, including a vertical end and a horizontal end. The horizontal end is used to mount the angle sensor 4, and the vertical end is welded to the frame hinge seat 7. The center of the angle sensor 4 coincides with the rotation center axis of the frame hinge seat 7, serving as the frame rod of the linkage mechanism. The hydraulic cylinder 6 with the sensor controls the steering of the frame 8 and provides stroke information, while the angle sensor 4 is used to provide steering information. Example 2
[0020] This embodiment provides a specific operating mode of a road roller steering angle feedback device: When a road roller equipped with this steering angle feedback device is in operation, the fixed bracket is rigidly connected to the frame. When the frame turns, the distance between the connecting rod mounting hole on the fixed bracket and the center of the frame hinge seat acts as a driving rod in the linkage mechanism, driving the connecting rod and the movable rod. The movable rod drives the rotating shaft of the angle sensor to rotate. The angle sensor provides steering information, and the stroke information provided by the hydraulic cylinder with the sensor is fed back to the control system to achieve frame steering control. This improves construction efficiency and avoids damage to the hydraulic cylinder caused by the impact of mechanical limit at the maximum steering angle, thus extending the service life of the hydraulic cylinder.
[0021] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A road roller steering angle feedback device, characterized in that, Includes fixed brackets, connecting rods, movable rods, supports, angle sensors, and hydraulic cylinders; One end of the connecting rod is connected to the fixed bracket, and the other end is connected to one end of the movable rod. The other end of the movable rod is connected to an angle sensor; The angle sensor is fixedly mounted on the bracket; The bracket is provided with a first connecting part for connecting to a first external structure; The fixed bracket is provided with a second connecting part for connecting to the second external structure; The hydraulic cylinder is equipped with a sensor.
2. The roller steering angle feedback device according to claim 1, characterized in that, The first connecting part is a frame hinge seat.
3. The roller steering angle feedback device according to claim 2, characterized in that, The second connecting part is the vehicle frame.
4. The roller steering angle feedback device according to claim 3, characterized in that, The fixed bracket includes a positioning hole and a connecting rod mounting hole. The positioning hole is used to fix the fixed bracket to the vehicle frame with fasteners. The connecting rod mounting hole is fixedly connected to the connecting rod. The distance between the connecting rod mounting hole and the center of the vehicle frame hinge seat is a fixed value.
5. The roller steering angle feedback device according to claim 1, characterized in that, The connecting rod includes a first stud and a second stud, the first stud being connected to a fixed bracket and the second stud being connected to the movable rod.
6. The roller steering angle feedback device according to claim 4, characterized in that, The length of the movable rod is equal to the distance between the connecting rod mounting hole and the center of the frame hinge seat, and the movable rod is connected to the angle sensor through a pin.
7. The roller steering angle feedback device according to claim 2, characterized in that, The bracket is an L-shaped bent plate, including a vertical end and a horizontal end. The horizontal end is used to install an angle sensor, and the vertical end is welded to the frame hinge seat. The center of the angle sensor coincides with the rotation center axis of the frame hinge seat.
8. The roller steering angle feedback device according to claim 1, characterized in that, The hydraulic cylinder controls the steering of the chassis and provides travel information, while the angle sensor provides steering information.