A steering device and a steering method for a slotted vehicle

Abstract

The invention discloses a steering device and a steering method for a slotting vehicle, which relate to the field of highway ditch construction. The device comprises a vehicle frame, a slewing mechanism and a traveling mechanism. The slewing mechanism comprises a steering arm arranged on the vehicle frame, a connecting rod connected to the steering arm and a slewing bearing arranged on the connecting rod. An end of the steering arm away from the connecting rod is connected to a driving member for driving the steering arm to rotate horizontally. The steering arm drives the connecting rod to perform horizontal circular motion with the center of the slewing bearing as the center of the circle. The connecting rod is connected to the traveling mechanism and drives the traveling mechanism to rotate horizontally. The steering device has a simple structure and is flexible and convenient to steer.

Description

Technical Field

[0001] The invention relates to the technical field of slotting vehicles, in particular to a steering device of a slotting vehicle. Background Art

[0002] Highway side ditch is an important structure necessary for timely drainage and protection of roadbed. At present, highway side ditch is grooved by using excavator. Excavator is generally composed of working device, steering device and walking device. The steering device of the equipment is the key component to control the forward direction of the excavator.

[0003] The steering device of the existing excavator is a base bracket directly connected to the walking mechanism mounting frame. The pressure oil output by the oil pump enters the steering cylinder through the central swivel joint, pushing the left steering knuckle arm to rotate around the steering knuckle kingpin, and driving the right steering knuckle arm through the steering tie rod to make the steering wheels on both sides deflect at the same time, thereby realizing steering. This steering method is laborious and not flexible and light enough. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a steering device for a slotting vehicle and a steering method thereof, which can solve the problem that the steering of an excavator is not flexible enough.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a steering device of a slotting vehicle and a steering method thereof, comprising a vehicle frame, a slewing mechanism and a traveling mechanism, wherein the slewing mechanism comprises a steering arm arranged on the vehicle frame, a connecting rod connected to the steering arm and a slewing bearing arranged on the connecting rod, wherein one end of the steering arm away from the connecting rod is connected to a driving member for driving the steering arm to rotate horizontally, and the steering arm drives the connecting rod to perform horizontal circular motion with the center of the slewing bearing as the center of the circle;

[0006] The connecting rod is connected to the walking mechanism and drives the walking mechanism to rotate horizontally.

[0007] By adopting the above technical solution, the extension and retraction of the driving part drives the steering arm to make horizontal rotation movement, the steering arm drives the connecting rod to make horizontal rotation movement, and the connecting rod drives the walking mechanism to make horizontal rotation movement to realize steering movement. The steering device has a simple structure and is flexible and light in steering.

[0008] Preferably, the slewing bearing comprises a slewing bearing inner ring and a slewing bearing outer ring, rolling balls are arranged between the slewing bearing inner ring and the slewing bearing outer ring, the slewing bearing inner ring is connected to a connecting rod, and the slewing bearing outer ring is connected to a frame.

[0009] By adopting the above technical solution, the frame and the connecting rod are connected through the slewing bearing outer ring and the slewing bearing inner ring of the slewing bearing, and the rotation of the connecting rod can be realized.

[0010] Preferably, the driving member is configured as a hydraulic cylinder.

[0011] By adopting the above technical solution, the hydraulic cylinder has light weight, small inertia, fast response, the hydraulic device is easy to start quickly, and the control and adjustment of the hydraulic cylinder transmission device is relatively simple.

[0012] Preferably, it also includes a driving assembly for driving the hydraulic cylinder to extend and retract, wherein two hydraulic cylinders are provided, and the hydraulic cylinders include an oil inlet and an oil outlet; the driving assembly includes a hydraulic oil pipe, a synchronization valve and a hydraulic source arranged on the frame, and the hydraulic source is connected to the synchronization valve through a hydraulic oil pipe; the synchronization valve includes an oil inlet pipe and an oil outlet pipe, the oil inlet pipe of the synchronization valve is connected to the oil inlets of the two hydraulic cylinders through the hydraulic oil pipe, and the oil outlet pipe of the synchronization valve is connected to the oil outlets of the two hydraulic cylinders through the hydraulic oil pipe.

[0013] By adopting the above technical solution, the hydraulic source provides the power source, and the oil is distributed equally to the two hydraulic cylinders through the synchronization valve.

[0014] Preferably, the connecting rod includes an inner leg and an outer slide sleeved on the inner leg, and the connecting rod also includes a built-in hydraulic cylinder, which is used to drive the inner leg and the outer slide to slide up and down; a control console is provided on the frame, and a first rotary switch button is provided on the control console, and the first rotary switch button is used to control the opening and closing of the built-in hydraulic cylinder.

[0015] By adopting the above technical solution, under the telescopic action of the built-in hydraulic cylinder, the inner leg and the outer slide of the connecting rod are driven to slide up and down, and the connecting rod can be telescoped.

[0016] Preferably, a second rotary switch button is also provided on the console, the hydraulic source includes a motor and a hydraulic pump, the motor is connected to the hydraulic pump, one end of the hydraulic pump is connected to the oil tank, and the other end of the hydraulic pump is connected to the synchronization valve, the second rotary switch button is used to control the opening and closing of the hydraulic cylinder, and the hydraulic pump is driven by the motor.

[0017] By adopting the above technical solution, the second rotary switch button turns the motor on and off, the motor drives the hydraulic pump to work, the oil tank flows to the synchronization valve through the hydraulic oil pipe, and the synchronization valve supplies oil to the hydraulic cylinder in equal amounts, thereby providing power for steering.

[0018] Preferably, the walking mechanism is configured as a walking track.

[0019] By adopting the above technical solution, the walking track has good anti-rollover performance and strong stability on the sliding slope.

[0020] A method for rotating a steering device of a slotting vehicle, characterized in that it comprises the following steps:

[0021] Step 1: Turn off the first rotary switch button and turn on the second rotary switch button;

[0022] Step 2: The hydraulic source starts to provide the energy required for the hydraulic cylinder to extend and retract, and the hydraulic cylinder retracts and retracts;

[0023] Step 3: The hydraulic cylinder extends and retracts to drive the steering arm to perform horizontal rotational motion, and the steering arm drives the connecting rod to perform horizontal circular motion with the slewing bearing center as the center of the circle, and the connecting rod drives the walking mechanism to turn synchronously to realize walking turning, thereby realizing the steering movement of the highway ditch slotting vehicle.

[0024] The steering resistance in the steering method of the present invention is small. Under the action of the synchronization valve, the hydraulic cylinders move synchronously, so that the connecting rods steer synchronously. During steering, the connecting rods contract under the action of the built-in hydraulic cylinders, reducing the resistance during steering. The steering method is fast and flexible, and helps to solve the problems of time-consuming and labor-intensive steering and lack of flexibility and portability.

[0025] Preferably, the second rotary switch button controls the opening and closing of the motor via an electrical signal.

[0026] By adopting the above technical solution, the electric signal-controlled driving element can be operated sensitively and efficiently.

[0027] Preferably, the synchronization valve is used to control the synchronous movement of two hydraulic cylinders.

[0028] By adopting the above technical solution, the synchronization valve can realize the expansion and contraction of the two cylinders at the same frequency, thereby assisting the connecting rod to turn synchronously.

[0029] The present invention provides a steering device for a slotting vehicle, which has the following beneficial effects:

[0030] 1. The telescopic drive member in the steering device of the present invention drives the steering arm to perform horizontal rotational motion, and the steering arm drives the connecting rod to perform horizontal circular motion with the slewing bearing center as the center of the circle, thereby realizing the steering of the slotting machine. The steering device has a simple structure and is flexible and convenient to steer;

[0031] 2. The steering method described in the present invention has small steering resistance. Under the action of the synchronization valve, the hydraulic cylinders move synchronously, so that the connecting rods steer synchronously. When steering, the connecting rods contract under the action of the built-in hydraulic cylinders, reducing the resistance during steering. The steering method is fast and flexible, which helps to solve the problems of time-consuming and labor-intensive steering and lack of flexibility and portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The present invention is a bottom view of a steering device of a slotting vehicle according to an embodiment of the present invention.

[0033] Figure 2This is a schematic diagram of the connection between a connecting rod and a slewing bearing of a steering device of a slotting vehicle according to an embodiment of the present invention.

[0034] Figure 3 for Figure 2 Enlarged view of part A.

[0035] Figure 4 The present invention is a schematic structural diagram of a slewing bearing of a steering device of a slotting vehicle according to an embodiment of the present invention.

[0036] Figure 5 This is a schematic diagram of the connection between a connecting rod and a steering arm of a steering device of a slotting vehicle according to an embodiment of the present invention.

[0037] Explanation of the accompanying drawings: 1. frame; 2. connecting rod; 3. walking mechanism; 4. hydraulic cylinder; 5. drive assembly; 6. steering arm; 7. slewing bearing; 8. slewing bearing inner ring; 9. slewing bearing outer ring; 10. hydraulic oil pipe; 11. synchronization valve; 12. hydraulic source; 13. control console; 14. first rotary switch button; 15. inner leg; 16. outer slide; 17. second rotary switch button; 18. rolling ball. DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0040] like Figure 1-Figure 2 As shown, an embodiment of the present invention provides a steering device for a slotting vehicle, including a frame 1, a slewing mechanism and a walking mechanism 3, wherein the walking mechanism 3 is configured as a walking track, and the slewing mechanism is used to drive the walking mechanism 3 to perform horizontal rotational motion to achieve walking steering.

[0041] Combination Figure 3-Figure 4 Specifically, the slewing mechanism includes a steering arm 6 disposed on the frame 1, a connecting rod 2 connected to the steering arm 6, and a slewing bearing 7 disposed on the connecting rod 2. The end of the steering arm 6 away from the connecting rod 2 is connected with a driving member for driving the steering arm 6 to rotate horizontally. Specifically, the driving member is configured as a hydraulic cylinder 4; the steering arm 6 is hinged to one end of the driving member, and the other end of the driving member is hinged to the frame 1. The hydraulic cylinder 4 is telescopic and used to drive the steering arm 6 to perform horizontal rotational motion. The steering arm 6 drives the connecting rod 2 to perform horizontal circumferential motion with the center of the slewing bearing 7 as the center. The connecting rod 2 is connected to the traveling mechanism 3 and drives the traveling mechanism 3 to perform horizontal rotational motion.

[0042] In addition, the slewing bearing 7 includes a slewing bearing inner ring 8 and a slewing bearing outer ring 9, the slewing bearing inner ring 8 is connected to the connecting rod 2, and the slewing bearing outer ring 9 is connected to the frame 1 by bolts; and rolling balls 18 are arranged between the slewing bearing inner ring 8 and the slewing bearing outer ring 9 to reduce the static friction between the slewing bearing inner ring 8 and the slewing bearing outer ring 9.

[0043] It should be noted that the steering device also includes a driving component 5 for driving the hydraulic cylinder 4 to open and close. The driving component 5 includes a hydraulic oil pipe 10, a synchronization valve 11 and a hydraulic source 12 arranged on the frame 1, and the hydraulic source 12 is connected to the synchronization valve 11 through the hydraulic oil pipe 10; specifically, the hydraulic source 12 includes a motor, a hydraulic pump and an oil tank, one end of the hydraulic pump is connected to the oil tank through the hydraulic oil pipe 10, and the other end is connected to the synchronization valve 11 through the hydraulic oil pipe 10, and the motor is used to drive the opening and closing of the hydraulic pump; preferably, two hydraulic cylinders 4 are provided, which are distributed at both ends of the frame 1, and the hydraulic cylinder 4 includes an oil inlet and an oil outlet; the synchronization valve 11 includes an oil inlet pipe and an oil outlet pipe, the oil inlet pipe of the synchronization valve 11 is connected to the oil inlets of the two hydraulic cylinders 4 through the hydraulic oil pipe 10, and the oil outlet pipe of the synchronization valve 11 is connected to the oil outlets of the two hydraulic cylinders 4 through the hydraulic oil pipe 10, and the oil is distributed to the two hydraulic cylinders 4 in equal amounts through the synchronization valve 11, so that the two hydraulic cylinders 4 move synchronously.

[0044] A control console 13 is provided on the frame 1. A first rotary switch button 14 and a second rotary switch button 17 are provided on the control console 13. The second rotary switch button 17 is used to control the opening and closing of the motor. When the second rotary switch button 17 is turned on, the motor starts to work, and the motor drives the hydraulic pump. The hydraulic pump continuously draws and presses oil from the oil tank, and delivers oil to the two hydraulic cylinders 4 through the hydraulic oil pipe 10, so as to realize the synchronous extension and retraction of the two hydraulic cylinders 4, thereby helping to drive the connecting rod 2 to perform horizontal rotation movement.

[0045] Combination Figure 5 The connecting rod 2 includes an inner leg 15 and an outer slide 16 sleeved on the inner leg 15. The connecting rod 2 is also provided with a built-in hydraulic cylinder, which is used to drive the inner leg 15 and the outer slide 16 to slide up and down. The opening and closing of the built-in hydraulic cylinder is controlled by the first rotary switch button 14. Under the telescopic action of the built-in hydraulic cylinder, the connecting rod 2 can be telescoped; in order to better complete the steering, the first rotary switch button 14 is closed during the steering, the built-in hydraulic cylinder is retracted, and the connecting rod 2 is in a retracted state. After the steering is completed, the first rotary switch button 14 is opened, and the connecting rod 2 is extended under the tightening action of the built-in hydraulic cylinder, so that the walking track contacts the ground to support the slotting vehicle.

[0046] The embodiment of the present invention also discloses a steering method for a slotting vehicle, which specifically includes the following operating steps:

[0047] Step 1: Close the first rotary switch button 14 and open the second rotary switch button 17; the second rotary switch button 17 is used to control the on and off of the electrical signal. After the second rotary switch button 17 is turned on, power is turned on, and the electrical signal controls the solenoid valve to open.

[0048] Step 2: The hydraulic source 12 starts to provide the energy required for the extension and retraction of the hydraulic cylinder 4, and the hydraulic cylinder 4 retracts and retracts; the synchronous valve 11 connected to the hydraulic source 12 is divided into two paths after the oil is taken in, and is transmitted to the hydraulic cylinder 4 through the hydraulic oil pipe 10. The two hydraulic cylinders 4 act synchronously, and the hydraulic cylinder 4 starts to work and retract after obtaining the energy.

[0049] Step 3: The hydraulic cylinder 4 is telescoped to drive the steering arm 6 to make horizontal rotational movement, the steering arm 6 drives the connecting rod 2 to make horizontal circular movement with the center of the slewing bearing 7 as the center, and the connecting rod 2 drives the walking mechanism 3 to make horizontal rotational movement to realize walking steering, thereby realizing the steering movement of the highway ditch slotting vehicle; when turning, first turn on the first rotary switch button 14 to control the built-in hydraulic cylinder to make the connecting rod 2 shrink, and after the turning is completed, turn off the first rotary switch button 14 to make the connecting rod 2 extend until it firmly contacts the ground.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steering device for a slotting vehicle, characterized in that: The invention comprises a vehicle frame (1), a slewing mechanism and a walking mechanism (3), wherein the slewing mechanism comprises a steering arm (6) arranged on the vehicle frame, a connecting rod (2) connected to the steering arm (6) and a slewing bearing (7) arranged on the connecting rod (2), wherein one end of the steering arm (6) away from the connecting rod (2) is connected to a driving member for driving the steering arm (6) to rotate horizontally, and the steering arm (6) drives the connecting rod (2) to perform horizontal circular motion with the center of the slewing bearing (7) as the center of the circle; The connecting rod (2) is connected to the walking mechanism (3) and drives the walking mechanism (3) to perform horizontal rotational movement; The slewing bearing (7) comprises a slewing bearing inner ring (8) and a slewing bearing outer ring (9), a rolling ball (18) is arranged between the slewing bearing inner ring (8) and the slewing bearing outer ring (9), the slewing bearing inner ring (8) is connected to a connecting rod (2), and the slewing bearing outer ring (9) is connected to a vehicle frame (1); the driving member is arranged as a hydraulic cylinder (4); The vehicle also comprises a driving assembly (5) for driving the hydraulic cylinder (4) to extend and retract, wherein two hydraulic cylinders (4) are provided, and the hydraulic cylinder (4) comprises an oil inlet and an oil outlet; the driving assembly (5) comprises a hydraulic oil pipe (10), a synchronization valve (11) and a hydraulic source (12) provided on the vehicle frame (1), wherein the hydraulic source (12) is connected to the synchronization valve (11) via the hydraulic oil pipe (10); the synchronization valve (11) comprises an oil inlet pipe and an oil outlet pipe, wherein the oil inlet pipe of the synchronization valve (11) is connected to the oil inlets of the two hydraulic cylinders (4) via the hydraulic oil pipe (10), and the oil outlet pipe of the synchronization valve (11) is connected to the oil outlets of the two hydraulic cylinders (4) via the hydraulic oil pipe (10).

2. A steering device for a slotting vehicle according to claim 1, characterized in that: The connecting rod (2) comprises an inner leg (15) and an outer slideway (16) sleeved on the inner leg (15); the connecting rod (2) further comprises a built-in hydraulic cylinder, the built-in hydraulic cylinder is used to drive the inner leg (15) and the outer slideway (16) to slide up and down; the frame (1) is provided with a control console (13), the control console (13) is provided with a first rotary switch button (14), the first rotary switch button (14) is used to control the opening and closing of the built-in hydraulic cylinder.

3. A steering device for a slotting vehicle according to claim 2, characterized in that: The console (13) is also provided with a second rotary switch button (17); the hydraulic source (12) comprises a motor, a hydraulic pump and an oil tank; the motor is connected to the hydraulic pump; one end of the hydraulic pump is connected to the oil tank; the other end of the hydraulic pump is connected to the synchronization valve (11); the second rotary switch button (17) is used to control the opening and closing of the motor; the hydraulic pump is driven by the motor.

4. A steering device for a slotting vehicle according to claim 3, characterized in that: The walking mechanism (3) is configured as a walking crawler.

5. A steering method for a steering device of a slotting vehicle according to claim 4, characterized in that: The following steps are involved: Step 1: turn off the first rotary switch button (14) and turn on the second rotary switch button (17); Step 2: The hydraulic source (12) starts to provide the energy required for the hydraulic cylinder (4) to extend and retract, and the hydraulic cylinder (4) extends and retracts; Step 3: The hydraulic cylinder (4) is extended and retracted to drive the steering arm (6) to perform horizontal rotational movement. The steering arm (6) drives the connecting rod (2) to perform horizontal circular movement with the center of the slewing bearing (7) as the center. The connecting rod (2) drives the walking mechanism (3) to turn synchronously to realize walking turning, thereby realizing the turning movement of the highway ditch slotting vehicle.

6. The steering method of a steering device of a slotting vehicle according to claim 5, characterized in that: The first rotary switch button (14) controls the opening and closing of the motor through an electrical signal.

7. The steering method of a steering device of a slotting vehicle according to claim 5, characterized in that: The synchronization valve (11) is used to control the synchronous movement of the two hydraulic cylinders (4).

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