A type of agricultural machinery chassis auxiliary displacement device

Abstract

This utility model discloses an auxiliary displacement device for agricultural machinery chassis, belonging to the field of agricultural machinery technology. It is located at the bottom of the rear part of the vehicle frame and includes a mounting base, hydraulic cylinder I, hydraulic cylinder II, a main connecting rod, an auxiliary connecting rod, and a wheel assembly. A rotating shaft I is rotatably mounted on the upper part of the mounting base, and a rotating shaft II is rotatably mounted on the lower part of the mounting base. One end of hydraulic cylinder I is hinged to the mounting base, and the other end of hydraulic cylinder I is hinged to one end of the main connecting rod. The other end of the main connecting rod is fixedly connected to the rotating shaft II. Two connecting arms are fixedly mounted on the outer wall of the cylinder body of hydraulic cylinder II, one of which is fixedly connected to the rotating shaft II. The auxiliary connecting rod includes two hinged short connecting rods, one of which is hinged to the rotating shaft I, and the other short connecting rod is hinged to another connecting arm on hydraulic cylinder II. The wheel assembly is rotatably connected to the end of the hydraulic cylinder rod of hydraulic cylinder II. A hub motor is built into the wheel rim of the wheel assembly and is connected to an electronic control device. The upper end of the mounting base is connected to the vehicle frame.

Description

Technical Field

[0001] This utility model relates to an auxiliary displacement device for agricultural machinery chassis, mainly used to assist in parking, steering, and leaving the warehouse, and belongs to the field of agricultural machinery technology. Background Technology

[0002] Four-wheeled vehicles, such as agricultural machinery, often face difficulties when parking, turning, or exiting in confined spaces. This can be particularly challenging for drivers with limited skills or novice drivers, leading to multiple instances of improper parking and even minor collisions, resulting in unnecessary claims and repairs. Utility Model Content

[0003] In view of the above-mentioned defects in the existing technology, this utility model provides an agricultural machinery chassis auxiliary displacement device, which can assist in parking, steering, and exiting the vehicle, and can solve the problems of parking and steering in narrow spaces.

[0004] This utility model is achieved through the following technical solution: an auxiliary displacement device for agricultural machinery chassis, characterized in that: it is located at the bottom of the middle and rear part of the frame, and includes a mounting base, cylinder I, cylinder II, main connecting rod, auxiliary connecting rod, and wheel assembly. A rotating shaft I is rotatably mounted on the upper part of the mounting base, and a rotating shaft II is rotatably mounted on the lower part of the mounting base. One end of cylinder I is hinged to the mounting base, and the other end of cylinder I is hinged to one end of the main connecting rod. The other end of the main connecting rod is fixedly connected to the rotating shaft II. Two connecting arms are fixedly mounted on the outer wall of the cylinder body of cylinder II, one of which is fixedly connected to the rotating shaft II. The auxiliary connecting rod includes two short connecting rods that are hinged together. One of the short connecting rods is hinged to the rotating shaft I, and the other short connecting rod is hinged to another connecting arm on cylinder II. The wheel assembly is rotatably connected to the end of the cylinder rod of cylinder II. A hub motor is built into the wheel rim of the wheel assembly. The hub motor is connected to an electronic control device. The upper end of the mounting base is connected to the frame.

[0005] In this invention, when the cylinder rod of cylinder I extends or retracts, it can drive the rotating shaft II, cylinder II, auxiliary connecting rod, and rotating shaft I in a coordinated manner via the main connecting rod, causing cylinder II to rotate and fold up or down around rotating shaft II. Under normal conditions, cylinder II is in the folded-up state. When assisted parking is required, cylinder II rotates down, causing the wheels to touch the ground. Increased hydraulic pressure raises the rear of the vehicle, suspending the two rear tires in the air. The wheel hub motor rotates according to the command, and the rear of the vehicle parks according to the driver's intention. Moving the vehicle out of the parking space reverses the direction. When not in use, cylinder I rotates in the reverse direction, and cylinder II folds up, ensuring normal vehicle passage.

[0006] Furthermore, to ensure assisted parking under the actual distribution of the center of gravity, a slide rail is installed at the bottom of the frame, and the mounting base is movably connected to the frame via the slide rail. The auxiliary displacement device can be easily moved to a suitable position via the slide rail.

[0007] Furthermore, the mounting base includes a vertical plate and two side plates fixedly connected to one side of the vertical plate. Rotating shaft I and rotating shaft II are both connected between the two side plates and close to the vertical plate. The hinge point between hydraulic cylinder I and the mounting base is located at one end of one of the side plates away from the vertical plate.

[0008] The beneficial effects of this utility model are as follows: This utility model has a simple structure and can assist in parking, steering, and exiting parking spaces, effectively solving the problem of difficulty in parking, steering, and exiting parking spaces for agricultural machinery vehicles in limited spaces. By adopting a design using hydraulic cylinders and mechanical linkages, the wheel assembly can be easily folded up or down. After folding, the bottom space of the frame is large, ensuring normal vehicle passage. Furthermore, the auxiliary displacement device has a simple structural design and is reliable in use. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 yes Figure 1 A schematic diagram of the axonal structure of the auxiliary displacement device for agricultural machinery chassis;

[0011] Figure 3 This is a schematic diagram of the hydraulic cylinder II and wheel assembly of the agricultural machinery chassis auxiliary displacement device when they are retracted.

[0012] Figure 4 This is a schematic diagram of the hydraulic cylinder II and wheel assembly of the agricultural machinery chassis auxiliary displacement device when they are partially deployed.

[0013] Figure 5 This is a diagram showing the state of the vehicle before parking using the assisted parking system of this utility model;

[0014] Figure 6 This is a diagram showing the state of the vehicle after it has been parked correctly during the assisted parking process of this utility model;

[0015] In the diagram, 10 is the chassis, and 20 is the agricultural machinery chassis auxiliary displacement device.

[0016] 201. Mounting base; 202. Auxiliary connecting rod; 203. Rotating shaft I; 204. Rotating shaft II; 205. Hydraulic cylinder I; 206. Main connecting rod; 207. Housing assembly; 208. Motor controller; 209. Wheel; 210. Wheel hub motor; 211. Wheel axle; 212. U-shaped bracket; 213. Hemispherical rotating pair; 214. Hydraulic cylinder II;

[0017] 2011, Vertical panel; 2012, Side panel I; 2013, Side panel II;

[0018] 2021, Short Link I; 2022, Short Link II;

[0019] 2141. Connecting arm I; 2142. Connecting arm II. Detailed Implementation

[0020] The present invention will be further described below through non-limiting embodiments and in conjunction with the accompanying drawings:

[0021] As attached Figures 1-4 As shown, an auxiliary shifting device 20 for agricultural machinery chassis is located at the bottom of the rear part of the frame 10. It includes a mounting base 201, hydraulic cylinder I 205, hydraulic cylinder II 214, a main connecting rod 206, an auxiliary connecting rod 202, and a wheel assembly. A rotating shaft I 203 is rotatably mounted on the upper part of the mounting base 201, and a rotating shaft II 204 is rotatably mounted on the lower part of the mounting base 201. One end of hydraulic cylinder I 205 is hinged to the mounting base 201, and the other end of hydraulic cylinder I 205 is hinged to one end of the main connecting rod 206. The other end of the main connecting rod 206 is fixedly connected to the rotating shaft II 204. Connecting arms I 2141 and II 2140 are fixedly mounted on the outer wall of the cylinder body of hydraulic cylinder II 214, with connecting arm I 2141 fixedly connected to the rotating shaft II 204. The auxiliary connecting rod 202 includes two hinged short connecting rods: short connecting rod I 2021 and short connecting rod II 2022. The other end of short connecting rod I 2021 is hinged to the rotating shaft I 203, and the other end of short connecting rod II 2022 is hinged to the connecting arm II 2142 on the hydraulic cylinder II 214. The wheel assembly is rotatably connected to the end of the cylinder rod of the hydraulic cylinder II 214. The wheel assembly includes a U-shaped bracket 212, an axle 211, a wheel 209, and a hub motor 210 built into the rim of the wheel 209. The wheel 209 is rotatably connected to the U-shaped bracket 212 via the axle 211. A hemispherical rotating joint 213 is connected to the top of the U-shaped bracket 212. The wheel assembly is rotatably connected to the receiving assembly 207 located at the end of the cylinder rod of the hydraulic cylinder II 214 via the hemispherical rotating joint 213. The hub motor 210 is connected to a motor controller 208. The upper end of the mounting base 201 is connected to the frame 10.

[0022] Considering the simplicity and reliability of the structural design, the mounting base 201 in this utility model adopts the following structure: The mounting base 201 includes a vertical plate 2011 and two side plates fixedly connected to one side of the vertical plate 2011: side plate I 2012 and side plate II 2013. Rotating shaft I 203 and rotating shaft II 204 are both connected between the two side plates and close to the vertical plate 2011. One end of the oil cylinder I 205 is hinged to the end of side plate II 2013 away from the vertical plate.

[0023] To ensure assisted parking under the actual distribution of the center of gravity, the agricultural machinery chassis auxiliary displacement device 20 can be configured to be position-adjustable. A slide rail can be installed at the bottom of the frame 10, and the mounting base 201 is connected to the frame 10 via the slide rail. The agricultural machinery chassis auxiliary displacement device 20 can be easily moved to a suitable position via the slide rail.

[0024] In this invention, when the cylinder rod of cylinder I 205 extends or retracts, it can drive the rotating shaft II 204, cylinder II 214, auxiliary connecting rod 202, and rotating shaft I 203 in a coordinated manner via the main connecting rod 206. This causes cylinder II 214 to drive the wheel assembly to rotate and fold around the rotating shaft II 204, allowing it to be raised or lowered. Under normal conditions, cylinder II and the wheel assembly are in a folded-up state to ensure normal vehicle passage. Lowering process: The cylinder rod of cylinder I 205 retracts, driving the rotating shaft II 204, cylinder II 214, auxiliary connecting rod 202, and rotating shaft I 203 in a coordinated manner. Cylinder II 214 and the wheel assembly rotate together around the rotating shaft II 204 and lower until they are nearly perpendicular to the ground. Then, the cylinder rod of cylinder II 214 extends, and under the reaction force with the ground, it suspends the two tires of the agricultural machinery that were originally on the ground. Driven by the hub motor 210, the wheel assembly rotates omnidirectionally around the receiving component 7 for movement and steering. Retraction process: The cylinder rod of cylinder I 205 extends, driving the rotating shaft II 204, cylinder II 214, auxiliary connecting rod 202, and rotating shaft I 203 to work together. Cylinder II 214 and the wheel assembly rotate together around rotating shaft II 204 to the folded state, and the two previously suspended tires of the agricultural machine touch the ground, resuming normal operation.

[0025] The working principle of this utility model is as follows: When the vehicle is driving normally and enters a limited space parking space, the front wheels can be basically in place, but the rear wheels cannot be parked correctly. A command is given to the hydraulic cylinder, and the action of hydraulic cylinder I 205 drives hydraulic cylinder II 214 and the wheel assembly to rotate and lower together. The cylinder rod of hydraulic cylinder II 214 extends so that the wheel assembly touches the ground and the two rear tires of the agricultural machinery that were originally on the ground are suspended in the air. At this time, a steering command is given to the hub motor, and the rear of the vehicle parks according to the driver's intention. Moving out of the parking space is the opposite.

[0026] The other parts in this embodiment are all existing technologies and will not be described in detail here.

Claims

1. An auxiliary displacement device for agricultural machinery chassis, characterized in that: Located at the bottom of the rear section of the frame, it includes a mounting base, hydraulic cylinder I, hydraulic cylinder II, main connecting rod, auxiliary connecting rod, and wheel assembly. A rotating shaft I is rotatably mounted on the upper part of the mounting base, and a rotating shaft II is rotatably mounted on the lower part of the mounting base. One end of hydraulic cylinder I is hinged to the mounting base, and the other end of hydraulic cylinder I is hinged to one end of the main connecting rod. The other end of the main connecting rod is fixedly connected to the rotating shaft II. Two connecting arms are fixedly mounted on the outer wall of the cylinder body of hydraulic cylinder II, one of which is fixedly connected to the rotating shaft II. The auxiliary connecting rod includes two hinged short connecting rods, one of which is hinged to the rotating shaft I, and the other short connecting rod is hinged to another connecting arm on hydraulic cylinder II. The wheel assembly is rotatably connected to the end of the cylinder rod of hydraulic cylinder II. A hub motor is built into the wheel rim of the wheel assembly and is connected to an electronic control device. The upper end of the mounting base is connected to the frame.

2. The agricultural machinery chassis auxiliary shifting device according to claim 1, characterized in that: The bottom of the frame is equipped with a slide rail, and the mounting base can be movably connected to the frame via the slide rail.

3. The agricultural machinery chassis auxiliary shifting device according to claim 1 or 2, characterized in that: The mounting base includes a vertical plate and two side plates fixedly connected to one side of the vertical plate. Rotating shaft I and rotating shaft II are both connected between the two side plates and close to the vertical plate. The hinge point between hydraulic cylinder I and the mounting base is located at the end of one of the side plates away from the vertical plate.

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