Anti-rollover supporting leg for maintenance truck, maintenance truck and automatic leveling system of maintenance truck

Abstract

The utility model discloses an anti-rollover landing leg for a maintenance truck, the maintenance truck and an automatic leveling system of the maintenance truck in the field of vehicle rollover prevention, the anti-rollover landing leg comprises a telescopic frame and a telescopic landing leg, one end of the telescopic frame is installed on a truck body and forms an included angle of 30 degrees with the horizontal direction, and the other end of the telescopic frame is connected with one end of the telescopic landing leg. The other end of the telescopic supporting leg is provided with a double universal wheel, the double universal wheel is used for supporting the vehicle body and moves together with the vehicle body, and the double universal wheel is of a double-wheel structure. According to the anti-rollover supporting leg, the included angle between the telescopic frame and the horizontal direction is 30 degrees, when the telescopic supporting leg stretches out to be used for supporting a vehicle body, the force borne by the telescopic supporting leg can be reduced, impact damage to the telescopic supporting leg can be better prevented when the vehicle runs, the used double universal wheels are of a double-wheel structure, the contact area between the double universal wheels and the ground is increased, and the service life of the supporting leg is prolonged. And the supporting stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle anti-rollover, and in particular to an anti-rollover outrigger for a maintenance vehicle, a maintenance vehicle and its automatic leveling system. Background Technology

[0002] Maintenance vehicles, such as road maintenance vehicles and bridge maintenance vehicles, typically need to operate in various terrains and environments. These operations include pruning green belts on both sides of the vehicle; pruning median strips along highways at multiple angles (horizontal, vertical, etc.); pruning slopes below highway guardrails; pruning high branches in mountainous areas; and shredding, collecting, and storing fallen branches and leaves. They are primarily suitable for large-scale pruning projects in highways, municipal gardens, and urban greening. This equipment prevents the vehicle from tipping over due to a shift in the center of gravity caused by boom extension during pruning operations, thus expanding the pruning range for greening maintenance. Therefore, the design of automatic leveling outriggers and a crane is particularly important to ensure the maintenance vehicle remains stable on various terrains and to facilitate various maintenance operations.

[0003] However, existing outrigger structures suffer from poor stability and durability, which limits the performance, stability, and safety of maintenance vehicles. Utility Model Content

[0004] The purpose of this utility model is to provide a rollover prevention outrigger for maintenance vehicles, wherein the telescopic frame is set at a 30° angle with the horizontal direction to reduce the damage to the outrigger from the impact of the ground during movement.

[0005] To solve the above technical problems, the following technical solution is adopted:

[0006] In the first aspect, this utility model provides a rollover prevention outrigger for a maintenance vehicle, including a telescopic frame and a telescopic outrigger. One end of the telescopic frame is mounted on the vehicle body and forms a 30° angle with the horizontal direction, and the other end is connected to one end of the telescopic outrigger. The other end of the telescopic outrigger is provided with a double universal wheel. The double universal wheel is used to support the vehicle body and move together with the vehicle body. The double universal wheel is a double wheel structure.

[0007] Optionally, two telescopic frames and two telescopic outriggers are provided. The two telescopic frames are respectively installed on both sides of the slewing seat of the trimming boom on the vehicle body and located between the carriage and the front of the vehicle. The two telescopic outriggers are located on both sides of the vehicle body.

[0008] Optionally, the telescopic frame is provided with a first hydraulic cylinder, the telescopic end of which is connected to the telescopic outrigger for controlling the horizontal extension and retraction of the telescopic outrigger.

[0009] Optionally, the telescopic support leg comprises a telescopic support, an inner sleeve, an outer sleeve and a second oil cylinder, the second oil cylinder is arranged in the outer sleeve, and a telescopic end is connected with the inner sleeve for controlling the telescopic movement of the inner sleeve in the vertical direction.

[0010] Optionally, the telescopic support leg is provided with a mounting plate, and the double universal wheels are mounted on the mounting plate.

[0011] Optionally, the telescopic support is provided with an inclination sensor for collecting the inclination angle of the vehicle body.

[0012] Optionally, the double universal wheels are made of solid rubber, and the central hub is made of alloy steel.

[0013] In a second aspect, the utility model provides an automatic leveling system of a maintenance vehicle, the automatic leveling system comprises the anti-rollover support leg of any one of the first aspect, and further comprises an inclination sensor, a first oil cylinder, a second oil cylinder, a data processing module and a control output module.

[0014] The first oil cylinder is used for driving the telescopic movement of the telescopic support, the second oil cylinder is used for driving the telescopic movement of the telescopic support leg, and the inclination sensor is used for collecting inclination angle related data of the vehicle body; the data processing module is used for processing the collected data, calculating the length and action instruction that the telescopic support legs on both sides should be adjusted; and the control output module is used for converting the calculated length and action instruction into control signals, and driving the telescopic support legs on both sides to perform corresponding actions.

[0015] In a third aspect, the utility model provides a maintenance vehicle, comprising a vehicle body, and the automatic leveling system of the maintenance vehicle in the second aspect is arranged on the vehicle body.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] 1、 the anti-rollover support leg provided by the utility model has the advantages that: the telescopic support is arranged at an angle of 30 degrees with the horizontal direction, so that the force borne by the telescopic support leg can be reduced when the telescopic support leg is extended to support the vehicle body, and the impact damage of the telescopic support leg during vehicle driving can be better prevented; the double universal wheels are of a double-wheel structure, so that the contact area with the ground is increased, and the stability of support is improved.

[0018] 2、 the leveling system of the maintenance vehicle provided by the utility model has the advantages that: the extension amount of the first oil cylinder and the second oil cylinder is adjusted according to the inclination angle of the vehicle body collected by the inclination sensor, so that the vehicle body is leveled, and the first oil cylinder can be controlled to extend the telescopic support leg to the outside of the vehicle body, and then the second oil cylinder is controlled to extend, so that the vehicle body can be better leveled and righted. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structure schematic view of the maintenance vehicle anti-rollover support leg installed on the vehicle body according to the present application;

[0020] Figure 2 is a structure schematic view of the maintenance vehicle anti-rollover support leg installed on the vehicle body according to the present application;

[0021] Figure 3 is a structure schematic view of the maintenance vehicle anti-rollover support leg installed on the vehicle body according to the present application;

[0022] Figure 4 is a structure schematic view of the maintenance vehicle anti-rollover support leg according to the present application;

[0023] Figure 5 is a structure schematic view of the maintenance vehicle anti-rollover support leg according to the present application.

[0024] Explanation of reference signs:

[0025] 1, vehicle body; 2, telescopic frame; 201, first oil cylinder; 3, telescopic support leg; 301, support leg inner sleeve; 302, support leg outer sleeve; 303, double universal wheel; 304, second oil cylinder; 305, mounting plate; 4, inclination sensor; 5, pruning arm frame. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, rather than any limitation on the present application and its application or use.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1

[0029] This embodiment provides a rollover prevention outrigger for a maintenance vehicle, including a telescopic frame 2 and a telescopic outrigger 3. One end of the telescopic frame 2 is mounted on the vehicle body 1, and the other end is connected to one end of the telescopic outrigger 3. The other end of the telescopic outrigger 3 is connected to a double swivel wheel 303. The telescopic frame 2 forms a 30° angle with the horizontal direction. The telescopic outrigger 3 is installed vertically, forming a 60° angle with the telescopic frame 2. The double swivel wheel 303 has a double-wheel structure.

[0030] like Figure 1 , Figure 2 At any time, the double swivel casters 303 serve as support and move together with the vehicle body 1, supporting the vehicle body 1 to prevent it from tilting or tipping over. The double swivel casters 303 with their double wheel structure increase the contact area with the ground, improving the stability of the outriggers.

[0031] The telescopic frame 2 is at a 30° angle to the horizontal direction. When the vehicle body 1 is prone to overturning, the force acting on the telescopic frame 2 is better transferred to the telescopic outrigger 3 and diffused to the ground from the double universal wheel 303. This avoids stress concentration at the connection between the telescopic frame 2 and the telescopic outrigger 3, and also avoids impact damage to the telescopic outrigger 3 when the vehicle body 1 is moving, thus improving the durability of the anti-rollover outrigger.

[0032] Example 2

[0033] The embodiment is based on the maintenance vehicle of the anti-rollover outrigger of the embodiment 1, and the difference is that:

[0034] As shown in Figure 3 , Figure 4 , the telescopic frame 2 and the telescopic outrigger 3 are both provided with two, one end of the two telescopic frames 2 is installed on both sides of the rotary seat of the trimming arm frame 5, the rotary seat of the trimming arm frame 5 is arranged between the carriage and the vehicle head, the other end of the telescopic frame 2 is extended from the side of the vehicle body 1 and connected with the vertically arranged telescopic outrigger 3, since the telescopic frame 2 is arranged obliquely, when the trimming arm frame 5 is located on one side for trimming work, the vehicle body 1 will tilt to that side, the corresponding telescopic outrigger 3 on that side has greater pressure on the ground, and the obliquely arranged telescopic frame 2 can bear part of the pressure from the vehicle body 1, thereby improving the durability of the telescopic frame 2 and the telescopic outrigger 3.

[0035] The telescopic frame 2 is internally provided with a first oil cylinder 201 for controlling the extension and retraction of the telescopic outrigger 3 in the horizontal direction, when the trimming arm frame 5 is not working, i.e. the trimming arm frame 5 is located at the central position above the carriage, the telescopic outrigger 3 is retracted into the vehicle body 1, avoiding collision with objects on the road during the rapid walking of the vehicle body 1.

[0036] The telescopic outrigger 3 comprises an outrigger inner sleeve 301, an outrigger outer sleeve 302 and a second oil cylinder 304, the outrigger outer sleeve 302 is movably connected with the outrigger outer sleeve 302, the second oil cylinder 304 is arranged inside the outrigger outer sleeve 302, the telescopic end is connected with one end of the outrigger inner sleeve 301, through the second oil cylinder 304, the outrigger inner sleeve 301 is realized in the vertical direction, when retracted, the outrigger inner sleeve 301 is retracted into the outrigger outer sleeve 302, avoiding collision with objects on the ground during the rapid walking of the vehicle body 1.

[0037] The end of the outrigger inner sleeve 301 is provided with a mounting plate 305, the double universal wheels 303 are bolted on the lower surface of the mounting plate 305, the double universal wheels 303 can adaptively adjust the position according to the advancing direction of the vehicle body 1 to adapt to the walking road conditions of the vehicle body 1, which has the property of universal, so it can slide when the vehicle body 1 advances or retreats, without human intervention to adjust the advancing direction of the wheels. And the double universal wheels 303 are adopted to strengthen the balance, so that the vehicle body 1 runs more stably, and the impact damage to the outrigger is reduced.

[0038] The double universal wheels 303 are made of solid rubber material, and the center hub is made of alloy steel material.

[0039] As shown in Figure 3 , Figure 5As shown, the tilt sensor 4 is installed on the telescopic frame 2 on one side to sense the tilt angle of the vehicle body 1, and the first oil cylinder 201 and the second oil cylinder 304 make telescopic response according to the tilt angle of the vehicle body 1 collected by the tilt sensor 4.

[0040] When the vehicle body 1 tilts to one side, the tilt angle of the vehicle body 1 is collected by the tilt sensor 4, the extension of the first oil cylinder 201 is controlled, the telescopic leg 3 is translated to the outside of the vehicle body 1, the output of the second oil cylinder 304 is controlled, and the double universal wheels 303 at the bottom support the ground to support and right the tilted vehicle body 1 upward, the tilt angle of the vehicle body 1 is controlled by controlling the extension amount of the first oil cylinder 201 and the second oil cylinder 304, and the movement of the vehicle body 1 is avoided.

[0041] The embodiment is provided with two telescopic structures in different directions, when the tilt angle of the vehicle body 1 is large, the extension of the first oil cylinder 201 is adjusted, the telescopic leg 3 is moved to the outside of the vehicle body 1, so that the telescopic leg 3 bears smaller force when supporting the tilted vehicle body 1, and the tilt of the vehicle body 1 is adjusted by adjusting the extension of the second oil cylinder 304.

[0042] Embodiment three

[0043] The embodiment provides an automatic leveling system of the anti-rollover support leg, which comprises the anti-rollover support leg provided in the embodiment two, and further comprises a data processing module, a control output module, a controller and an electromagnetic valve for controlling the extension of the oil cylinder, the electromagnetic valve is controlled by the controller to realize the extension control of the oil cylinder, the controller can be selected from a Siemens S7-1200 series PLC, the oil cylinder can be selected from an RTA-50 model, and the electromagnetic valve can be selected from an SY3120 model.

[0044] During the leveling process, the vehicle body 1 tilts, the tilt sensor 4 collects the tilt angle of the vehicle body 1, the control output module converts the processing result into a control signal, automatically adjusts the extension electromagnetic valve or the retraction electromagnetic valve corresponding to the oil cylinder on the two sides, and drives the oil cylinder to perform corresponding actions.

[0045] The specific logic is that when the controller accepts that the tilt sensor 4 detects that the vehicle body is inclined, the corresponding extension solenoid valve and retraction solenoid valve of the two sides are automatically adjusted. Specifically, when the vehicle body 1 is inclined to the left or right, the left extension solenoid valve PWM output or the right extension solenoid valve PWM output. The controller detects the current inclination angle of the vehicle body 1 collected by the inclination sensor 4 every "angle change scanning period t". If the inclination angle does not change, the current of the solenoid valve is "working current", and the double universal wheels 303 at the bottom of the telescopic leg 3 move together with the vehicle body 1; if the inclination angle changes (the difference is greater than "automatic leveling standard"), the output current of the solenoid valve is controlled according to the current inclination angle, thereby controlling the extension and retraction of the corresponding oil cylinder. The specific leveling process is that when the actual inclination angle is greater than or equal to "first-order inclination angle", the current of the solenoid valve is "working current" x initial deceleration point (percentage) for adjustment; when the actual inclination angle is less than "first-order inclination angle" and greater than or equal to "second-order inclination angle", the current of the solenoid valve is "working current" x first-order deceleration point (percentage) for adjustment; when the actual inclination angle is less than "second-order inclination angle" and greater than or equal to "third-order inclination angle", the current of the solenoid valve is "working current" x second-order deceleration point (percentage) for adjustment; when the actual inclination angle is less than "third-order inclination angle", the current of the solenoid valve is "working current" x third-order deceleration point (percentage) for adjustment, until the inclination angle is equal to "± leveling standard", and the adjustment is stopped.

[0046] The automatic leveling system provided in the embodiment can continuously perform dynamic adjustment according to the road surface condition and the vehicle body dynamics, and always ensure that the vehicle body 1 maintains a good driving posture and stability.

[0047] Embodiment Four

[0048] The embodiment provides a maintenance vehicle, which comprises a vehicle body 1, and the vehicle body 1 is provided with the anti-rollover leg automatic leveling system provided in the embodiment three.

[0049] When the trimming arm on the vehicle body 1 is working, it needs to be turned to one side for trimming work. When the trimming arm is working on one side, the vehicle body 1 may be inclined to the side due to movement or uneven road surface, and the anti-rollover leg in the automatic leveling system can support the vehicle body 1 and level the vehicle body 1 through the oil cylinder. This ensures the safe and efficient operation of the maintenance vehicle under different working conditions, and provides solid and reliable technical support and protection.

[0050] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection range of the present application.

Claims

1. A roll-over prevention outrigger for a maintenance vehicle, characterized in that The application relates to a maintenance vehicle, which comprises telescopic frames (2) and telescopic legs (3), one end of the telescopic frame (2) is installed on a vehicle body (1) and forms a 30-degree angle with the horizontal direction, the other end is connected with one end of the telescopic leg (3), the other end of the telescopic leg (3) is provided with double universal wheels (303), the double universal wheels (303) are used for supporting the vehicle body (1) and moving together with the vehicle body (1), and the double universal wheels (303) are double-wheel structures.

2. The roll-over prevention kick leg for a maintenance vehicle of claim 1, wherein The telescopic frame (2) and the telescopic leg (3) are both provided with two, the two telescopic frames (2) are respectively installed on both sides of a rotary seat of a trimming arm frame (5) on the vehicle body (1) and are located between a carriage and a vehicle head, and the two telescopic legs (3) are located on both sides of the vehicle body (1).

3. The roll-over prevention kick-out leg for a maintenance vehicle as set forth in claim 1, wherein The telescopic frame (2) is internally provided with a first oil cylinder (201), the telescopic end of the first oil cylinder (201) is connected with the telescopic leg (3) and is used for controlling the telescopic leg (3) to telescopically extend in the horizontal direction.

4. The roll-over preventing support leg for a maintenance vehicle according to claim 1, characterized by The telescopic leg (3) comprises a leg inner sleeve (301), a leg outer sleeve (302) and a second oil cylinder (304), the second oil cylinder (304) is arranged in the leg outer sleeve (302), the telescopic end is connected with the leg inner sleeve (301) and is used for controlling the leg inner sleeve (301) to telescopically extend in the vertical direction.

5. The roll-over preventing support leg for a maintenance vehicle according to claim 1, wherein The telescopic leg (3) is provided with a mounting plate (305) at the end, and the double universal wheels (303) are mounted on the mounting plate (305).

6. The roll-over preventing support leg for a maintenance vehicle according to claim 1, wherein The telescopic frame (2) is provided with an inclination sensor (4) for collecting the inclination angle of the vehicle body (1).

7. The roll-over preventing support leg for a maintenance vehicle according to claim 1, wherein The double universal wheels (303) are made of solid rubber, and the center hub is made of alloy steel.

8. An automatic leveling system for a maintenance vehicle, comprising: The application further discloses a maintenance vehicle with the anti-rollover leg, and the maintenance vehicle further comprises an inclination sensor (4), a first oil cylinder (201), a second oil cylinder (304), a data processing module and a control output module. The first oil cylinder (201) is used for driving the telescopic frame (2) to telescopically extend, the second oil cylinder (304) is used for driving the telescopic leg (3) to telescopically extend, the inclination sensor (4) is used for collecting the inclination angle of the vehicle body, the data processing module is used for processing the collected data and calculating the length and action instruction of the two telescopic legs (3) to be adjusted, and the control output module is used for converting the calculated length and action instruction into control signals and driving the two telescopic legs (3) to perform corresponding actions.

9. A maintenance vehicle comprising a vehicle body, characterized in that The vehicle body is provided with the automatic leveling system of the maintenance vehicle.

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