Steering control device for narrower vehicle body

Abstract

The utility model relates to a steering control device for a narrower vehicle body. The steering control device structurally comprises a steering wheel device, a steering wheel mounting frame and a transmission control mechanism which are arranged on the vehicle body, a first swing rod is arranged on one side of the steering wheel device; the steering wheel mounting frame is located on the front portion of the vehicle body, vertical steering sleeves are arranged on the two sides of the steering wheel mounting frame respectively, steering rods are connected into the steering sleeves in a penetrating mode, a second swing rod is arranged at the upper end of the steering rod on one side, and the lower ends of the steering rods on the two sides are used for being connected with steering wheels; the transmission control mechanism comprises a first connecting rod arranged on the vehicle body and located behind the steering wheel device, the middle of the first connecting rod is hinged to the vehicle body so that the first connecting rod can swing on the horizontal plane, one end of the first connecting rod is connected with a first swing rod through a second connecting rod, and the other end of the first connecting rod is connected with a second swing rod through a third connecting rod. And the two steering wheels are connected through a pull rod. The structure can be suitable for a narrow vehicle body, and the requirement for steering control of the narrow vehicle body is met.

Description

Technical Field

[0001] The utility model relates to a vehicle steering control device, in particular to a steering control device for a narrow vehicle body. Background Art

[0002] For crops such as sugarcane, it is necessary to remove leaves and weeds during their growth process. However, due to the small spacing between plant rows, generally less than 100 centimeters, traditional mechanical equipment cannot enter, and the corresponding work can only be done manually, which requires a lot of manpower and time.

[0003] When designing a mechanical device specifically for traveling in the furrows between plants, the overall width of the vehicle body should be less than the spacing between the rows of plants, so that the width of the vehicle body will be very narrow. At the same time, the vehicle body needs to be equipped with a traveling device and a steering control system for controlling the steering to achieve the necessary traveling and steering functions of the mechanical device. The traditional steering control system requires a long transverse transmission rod to be set on both sides of the steering gear of the steering shaft, and the overall width of the entire steering control device is large. When the width of the vehicle body is narrow, the space on the transverse width of the vehicle body is limited, and the transverse transmission rods installed on both sides of the steering wheel steering gear do not have sufficient space to move, resulting in a small swing range of the steering wheel, which cannot meet the steering requirements of the vehicle body, resulting in the inability of the traditional steering system to be applied to a vehicle body with a narrow width. Utility Model Content

[0004] The purpose of the utility model is to provide a steering control device for a narrow vehicle body, so as to solve the problem that the existing traditional steering system cannot be applied to a vehicle body with a narrow width.

[0005] The utility model is implemented as follows: a steering control device for a narrow vehicle body, comprising a steering wheel device, a steering wheel mounting frame and a transmission control mechanism arranged on the vehicle body;

[0006] A first swing rod driven by the steering wheel device to swing up and down is provided on one side of the steering wheel device;

[0007] The steering wheel mounting frame is located at the front of the vehicle body, and vertical steering sleeves are respectively arranged on both sides of the steering wheel mounting frame, and a steering rod is inserted into the steering sleeve, and a second swing rod is arranged at the upper end of the steering rod on one side, and the lower ends of the steering rods on both sides are used to connect the steering wheels;

[0008] The transmission control mechanism includes a first connecting rod arranged on the vehicle body and located behind the steering wheel device, the middle part of the first connecting rod is hinged on the vehicle body so that it can swing on the horizontal plane, one end of the first connecting rod is connected to the first swing rod through the second connecting rod, and the other end of the first connecting rod is connected to the second swing rod through the third connecting rod;

[0009] The two steering wheels are connected by a tie rod.

[0010] As a further improvement of the steering control device for a narrower vehicle body of the utility model, the steering wheel mounting frame includes two transverse rods arranged side by side up and down, the middle part of the transverse rod is hinged to the vehicle body, and the end part of the transverse rod is hinged to the steering sleeve.

[0011] As a further improvement of the steering control device for a narrow vehicle body of the utility model, one end or both ends of the second connecting rod and the third connecting rod are ball joints.

[0012] As a further improvement of the steering control device for a narrower vehicle body of the utility model, the steering wheel device includes a steering shaft, a steering wheel located at one end of the steering shaft, and a steering gear located at the other end of the steering shaft. The output shaft of the steering gear is arranged in the left and right horizontal directions, and the output shaft of the steering gear is connected to the first rocker arm.

[0013] As a further improvement of the steering control device for a narrow vehicle body of the utility model, the steering gear is a worm gear steering gear.

[0014] As a further improvement of the steering control device for a narrow vehicle body of the utility model, elongated holes are provided on the side walls on both sides of the vehicle body, and the first connecting rod passes through the elongated holes.

[0015] The utility model discloses a steering control device specially used for a narrow vehicle body. The torsional force of a steering wheel is output to one side through a steering gear, then converted into a pulling force through a first swing rod, and the pulling force is transmitted backward to a first connecting rod in a lever structure through a second pulling rod, the pulling force is transmitted to the other side of the vehicle body through the lever structure of the first connecting rod, the pulling force is transmitted to the second swing rod through a third pulling rod, the second swing rod converts the pulling force into a torsional force acting on a steering rod, thereby steering the steering wheel on this side, and the two steering wheels are connected by a pulling rod, thereby realizing synchronous steering of the two steering wheels.

[0016] At the same time, the two transverse rods of the steering wheel mounting frame are hinged to the steering sleeve to form a parallelogram structure. When the left and right sides of the ground are inconsistent, the two steering wheels can move up and down accordingly to adapt to the road surface, but can still remain in a vertical state while moving up and down, thereby avoiding the tilt of the vehicle body due to the ups and downs of the road surface.

[0017] The utility model adopts a connecting rod along the length direction of the vehicle body to replace the original connecting rod arranged along the width direction of the vehicle body, and utilizes the relatively spare space in the length direction of the vehicle body to transmit the force output from one side of the steering wheel steering gear to the other side through multiple connecting rods, thereby realizing control of the steering wheel. The utility model can realize control of the steering wheel of a narrow vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view principle diagram of the utility model.

[0019] Figure 2 It is a front view of the utility model.

[0020] Figure 3 It is a structural diagram of a steering wheel device of the present utility model.

[0021] In the figure: 1, vehicle body; 2, steering wheel; 3, steering wheel; 4, steering shaft; 5, steering gear; 6, first rocker arm; 7, first connecting rod; 8, second connecting rod; 9, third connecting rod; 10, second rocker arm; 11, steering wheel mounting frame; 12, steering sleeve; 13, steering rod; 14, long hole; 11-1, transverse rod. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is described below in conjunction with the accompanying drawings.

[0023] like Figure 1 , Figure 2 as well as Figure 3 As shown, the utility model is a steering control device for a narrow vehicle body 1, which mainly comprises a steering wheel 3 device arranged on the vehicle body 1, a steering wheel mounting frame 11 and a transmission control mechanism.

[0024] The steering wheel 3 device is arranged at the front of the vehicle body 1 and is located behind the steering wheel mounting frame 11. A first swing rod 6 driven by the steering wheel 3 device is arranged on one side of the steering wheel 3 device. The first swing rod 6 swings up and down around the swing axis.

[0025] The steering wheel mounting frame 11 is located at the front of the vehicle body 1. Vertical steering sleeves 12 are respectively arranged on both sides of the steering wheel mounting frame 11. A steering rod 13 is inserted in the steering sleeve 12. The steering rod 13 can rotate in the steering sleeve 12. The lower ends of the two steering rods 13 on both sides are connected to the steering wheel 2. When the steering rod 13 rotates in the steering sleeve 12, it can drive the steering wheel 2 to swing together. A second swing rod 10 is arranged at the upper end of the steering rod 13 on one side, and the second swing rod 10 and the first swing rod 6 are respectively located on different sides of the vehicle body 1. The second swing rod 10 drives the steering rod 13 on this side to rotate, thereby directly driving the steering wheel 2 on this side to steer.

[0026] The two steering wheels 2 on both sides are connected by a pull rod (not shown in the figure), so that when the steering wheel 2 on the side with the second swing rod 10 swings, the other steering wheel 2 also swings together to ensure the synchronization of the two steering wheels 2.

[0027] The transmission between the first swing arm 6 and the second swing arm 10 is realized through a transmission control mechanism, which includes a first link 7, a second link 8 and a third link 9. The first link 7 is located at a certain distance behind the steering wheel 3 device, and the first link 7 spans the width direction of the vehicle body 1. The two ends of the first link 7 are respectively located on both sides of the vehicle body 1. The middle part of the first link 7 is hinged on the vehicle body 1 so that it can swing on the horizontal plane around the hinge point. The first swing arm 6 located on one side of the vehicle body 1 is connected to one end of the first link 7 through the second link 8, and the second swing arm 10 located on the other side of the vehicle body 1 is connected to the other end of the first link 7 through the third link 9.

[0028] Since the first swing rod 6, the second swing rod 10 and the first connecting rod 7 are not in the same plane, a ball joint is provided at one end or both ends of the first connecting rod 7 and the second connecting rod 8 so that a stable connection can be maintained between the swing rod and the connecting rod.

[0029] In order to install the first connecting rod 7 , elongated holes 14 are opened on the side walls of both sides of the vehicle body 1 , and the first connecting rod 7 passes through the elongated holes 14 . The elongated holes 14 have a certain length to accommodate the swing of the first connecting rod 7 .

[0030] Among them, Figure 2 As shown, the steering wheel mounting frame 11 includes two transverse rods 11-1 arranged side by side in the upper and lower parts. The ends of the transverse rods 11-1 are connected to the steering sleeve 12, and the middle part of the transverse rods 11-1 is hinged to the vehicle body. The cross section of the steering sleeve 12 is specifically rectangular, and a hole for inserting a vertical steering rod 13 is opened along the length direction of the steering sleeve 12. The steering rod 13 passes through the steering sleeve 12 and can rotate around its own axis in the steering sleeve 12. The ends of the transverse rod 11-1 are two extended connecting ears, and the steering sleeve 12 is located between the two connecting ears. The steering sleeve 12 is connected to the connecting ears by a pin shaft, and the steering sleeve 12 can rotate around the pin shaft at a certain angle in the space between the two connecting ears.

[0031] In this way, the two transverse rods 11-1 and the two steering sleeves 12 form a parallelogram structure. When the two transverse rods 11-1 swing around the hinge shaft in the middle, the two steering sleeves 12 are always in a vertical state. When the two sides of the road are uneven, the two steering wheels 2 move up and down at different heights. Through the above-mentioned parallelogram structure, the two transverse rods 11-1 swing to make the two steering wheels 2 adapt to the different uneven road conditions on both sides, but the two steering sleeves 12 are always in a vertical state, thereby avoiding the tilting of the vehicle body 1 due to the uneven road conditions on both sides, and preventing the vehicle body 1 from tipping over.

[0032] The steering wheel 3 device includes a steering shaft 4, a steering wheel 3 located at one end of the steering shaft 4, and a steering gear 5 located at the other end of the steering shaft 4. The output shaft of the steering gear 5 is arranged in the horizontal direction of the vehicle body 1, and the output shaft of the steering gear 5 is connected to the first swing arm 6. The steering shaft 4 can be driven to rotate by rotating the steering wheel 3, and the steering gear 5 converts the direction of the power into rotation around the axis of the vehicle body 1 in the horizontal direction.

[0033] Among them, the steering gear 5 can be a worm gear steering gear 5, which increases the output of the steering force through the transmission ratio of the worm gear. At the same time, since the worm gear mechanism has a self-locking function, the swing of the steering wheel 2 is only controlled by the steering wheel 3 and will not be affected by external forces.

[0034] The utility model changes the steering force of the traditional steering control device to be output to both sides through the two-side tie rods, and changes it to be output from one side of the vehicle body 1, and then goes around to the other side of the vehicle body 1 through the connecting rod, first directly acts on a steering wheel 2 on the other side of the vehicle body 1, and then acts on the steering wheel 2 on the steering force output side through the tie rod, so as to achieve the synchronous swing of the two steering wheels 2. The structure of the utility model has a low space requirement in the width direction of the vehicle body 1, and can be applied to a vehicle body 1 with a very narrow width, meeting the steering control requirements of a narrow vehicle body 1.

Claims

1. A steering control device for a narrow vehicle body, characterized in that: It includes a steering wheel device, a steering wheel mounting frame and a transmission control mechanism arranged on the vehicle body; A first swing rod driven by the steering wheel device to swing up and down is provided on one side of the steering wheel device; The steering wheel mounting frame is located at the front of the vehicle body, and vertical steering sleeves are respectively arranged on both sides of the steering wheel mounting frame, and a steering rod is inserted into the steering sleeve, and a second swing rod is arranged at the upper end of the steering rod on one side, and the lower ends of the steering rods on both sides are used to connect the steering wheels; The transmission control mechanism includes a first connecting rod arranged on the vehicle body and located behind the steering wheel device, the middle part of the first connecting rod is hinged on the vehicle body so that it can swing on the horizontal plane, one end of the first connecting rod is connected to the first swing rod through the second connecting rod, and the other end of the first connecting rod is connected to the second swing rod through the third connecting rod; The two steering wheels are connected by a tie rod.

2. The steering control device for a narrow vehicle body according to claim 1, characterized in that: The steering wheel mounting frame comprises two transverse rods arranged side by side up and down, the middle part of the transverse rod is hinged to the vehicle body, and the end part of the transverse rod is hinged to the steering sleeve.

3. The steering control device for a narrow vehicle body according to claim 1, characterized in that: One end or both ends of the second connecting rod and the third connecting rod are ball joints.

4. The steering control device for a narrow vehicle body according to claim 1, characterized in that: The steering wheel device includes a steering shaft, a steering wheel located at one end of the steering shaft, and a steering gear located at the other end of the steering shaft. The output shaft of the steering gear is arranged in the left and right horizontal directions, and the output shaft of the steering gear is connected to the first swing arm.

5. The steering control device for a narrow vehicle body according to claim 4, characterized in that: The steering gear is a worm gear steering gear.

6. The steering control device for a narrow vehicle body according to claim 1, characterized in that: Long holes are provided on the side walls on both sides of the vehicle body, and the first connecting rod passes through the long holes.

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