Telescopic barrier recovery vehicle with large-span working arm

Abstract

The utility model discloses a telescopic guardrail repair truck with large-span operation arm belongs to engineering vehicle technical field, and it is including: the support cylinder of setting in the hydraulic telescopic rod and telescopic axle junction, its inner wall near telescopic axle is uniformly arranged with arc air groove around, the arc air groove notch is provided with the elastic plate that is arc setting, and the sealed cavity is formed between the elastic plate and arc air groove. The utility model discloses through setting the elastic plate, can make telescopic axle in the extension process, always with hydraulic telescopic rod coaxial arrangement, thereby improves the stability of junction, through the radial extrusion of elastic plate, further supports the junction of hydraulic telescopic rod and telescopic axle, improves the support intensity of junction, effectively improves the service life of hydraulic telescopic rod and telescopic axle.

Description

Technical Field

[0001] This utility model relates to the field of engineering vehicle technology, specifically to a telescopic guardrail repair vehicle with a large-span working arm. Background Technology

[0002] The median barriers on highways and urban expressways are crucial traffic safety facilities. After a traffic accident or natural damage, rapid repair of the barriers is essential for restoring traffic flow and preventing secondary accidents. Due to the width of highways, telescopic booms are used to achieve large-span operations during emergency repairs.

[0003] When existing guardrails are used for large spans, the longer the telescopic shaft extends, the weaker the support at the connection between the telescopic shaft and the hydraulic telescopic rod becomes. This causes the connection to wobble and rub when the guardrail moves, resulting in unstable movement and affecting the service life of the hydraulic telescopic rod and the telescopic shaft. Utility Model Content

[0004] The purpose of this utility model is to provide a telescopic guardrail repair vehicle with a large-span working arm, which solves the technical problem in the prior art where, when the guardrail is deployed over a large span, the longer the telescopic shaft extends, the weaker the support at the connection between the telescopic shaft and the hydraulic telescopic rod becomes. This leads to swaying and friction at the connection when the guardrail moves, resulting in unstable movement and affecting the service life of the hydraulic telescopic rod and the telescopic shaft.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a telescopic guardrail repair vehicle with a large-span working arm, comprising: The vehicle body and the rotating platform mounted on the vehicle body; A support base is fixedly mounted on a rotating platform, and a hydraulic telescopic rod is hinged to its top end. The output end of the hydraulic telescopic rod is provided with a telescopic shaft. The support cylinder fitted at the connection between the hydraulic telescopic rod and the telescopic shaft has arc-shaped air grooves evenly distributed around its inner wall near the telescopic shaft. An arc-shaped elastic plate is provided at the opening of the arc-shaped air groove, and a sealed cavity is formed between the elastic plate and the arc-shaped air groove. A pneumatic unit is installed on the inner wall of the support cylinder near the hydraulic telescopic rod. The pneumatic unit adjusts the air pressure inside the sealing cavity to increase the pressure, pushing the elastic plate to bulge and deform towards the outer wall of the telescopic shaft, so as to provide radial compression support for the telescopic shaft.

[0006] Preferably, the pneumatic unit includes circumferentially distributed electric actuators and air cylinders, and a piston that is fixedly connected to the output end of the electric actuator is slidably disposed inside the air cylinder.

[0007] Preferably, the air cylinder and the sealing cavity are connected by an air passage.

[0008] Preferably, a rubber layer is provided at the connection between the elastic plate and the arc-shaped air groove.

[0009] Preferably, a supporting hydraulic rod is provided between the hydraulic telescopic rod and the rotary table.

[0010] In the above technical solution, the telescopic guardrail repair vehicle with a large-span working arm provided by this utility model has the following beneficial effects: This invention utilizes an elastic plate. When the telescopic shaft extends to a preset length, a pneumatic unit adjusts the air pressure inside the sealed cavity between the elastic plate and the arc-shaped air groove. The increased air pressure inside the sealed cavity causes the arc-shaped elastic plate to radially deform and bulge, thus contacting and pressing against the outer wall of the telescopic shaft. This generates radial compressive force on the telescopic shaft, providing radial support. This ensures that the telescopic shaft remains coaxial with the hydraulic telescopic rod during extension, improving the stability of the connection. The radial compression of the elastic plate further supports the connection between the hydraulic telescopic rod and the telescopic shaft, increasing the support strength of the connection and effectively extending the service life of both the hydraulic telescopic rod and the telescopic shaft. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0012] Figure 1 This is a left-view stereoscopic structural diagram provided for an embodiment of the present utility model; Figure 2 This is a right-view stereoscopic structural diagram provided for an embodiment of the present utility model; Figure 3 A cross-sectional structural schematic diagram of the hydraulic telescopic rod provided in an embodiment of this utility model; Figure 4 for Figure 3 Enlarged view of part A in the image.

[0013] Explanation of reference numerals in the attached figures: 1. Vehicle body; 2. Rotary table; 3. Support base; 4. Hydraulic telescopic rod; 5. Telescopic shaft; 6. Support cylinder; 7. Electric actuator; 8. Air cylinder; 9. Piston; 10. Air passage; 11. Arc-shaped air groove; 12. Elastic plate. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0015] like Figure 1-4 As shown, a telescopic guardrail repair vehicle with a long-span boom includes: Vehicle body 1 and rotating platform 2 rotatably mounted on vehicle body 1; A support base 3 is fixedly installed on the rotary table 2, and a hydraulic telescopic rod 4 is hinged at its top. A telescopic shaft 5 is installed at the output end of the hydraulic telescopic rod 4. The support cylinder 6, which is sleeved at the connection between the hydraulic telescopic rod 4 and the telescopic shaft 5, has arc-shaped air grooves 11 evenly distributed around its inner wall near the telescopic shaft 5. An arc-shaped elastic plate 12 is provided at the opening of the arc-shaped air groove 11, and a sealed cavity is formed between the elastic plate 12 and the arc-shaped air groove 11. A pneumatic unit is installed on the inner wall of the support cylinder 6 near the hydraulic telescopic rod 4. The pneumatic unit adjusts the air pressure inside the sealing cavity to increase the pressure, pushing the elastic plate 12 to bulge and deform towards the outer wall of the telescopic shaft 5, so as to radially compress and support the telescopic shaft 5.

[0016] Specifically, in use, the entire device is moved to the location of the guardrail repair via vehicle body 1. The drive motor rotates the lead screw inside the symmetrically arranged slide rails on vehicle body 1, thereby moving the nut block threaded on the lead screw within the slide rail. This, in turn, moves the fixed seat fixedly connected to the nut block. The rotary motor drives the rotary table 2, which is rotatably mounted on the fixed seat, to rotate, thereby causing the support seat 3, which is fixedly mounted on top of the rotary table 2, to rotate synchronously. This enables multi-directional movement of the guardrail. The hydraulic telescopic rod 4 and telescopic shaft 5, which are hinged on the top of the support seat 3, allow for large-span movement of the guardrail through the extension and retraction of the telescopic shaft 5.

[0017] Furthermore, when the guardrail is moved over a large span, the longer the telescopic shaft 5 extends, the weaker the support at the connection between the telescopic shaft 5 and the hydraulic telescopic rod 4 becomes. This causes the connection to wobble and rub when the guardrail moves, resulting in unstable movement and affecting the service life of the hydraulic telescopic rod 4 and the telescopic shaft 5. By installing the support cylinder 6 at the connection between the telescopic shaft 5 and the hydraulic telescopic rod 4, the support at the connection between the telescopic shaft 5 and the hydraulic telescopic rod 4 can be strengthened, thereby improving the stability of the connection between the telescopic shaft 5 and the hydraulic telescopic rod 4.

[0018] Furthermore, when the telescopic shaft 5 extends to a preset length, the air pressure inside the sealing cavity between the elastic plate 12 and the arc-shaped air groove 11 is adjusted by the pneumatic unit. The air pressure inside the sealing cavity increases, thereby pushing the arc-shaped elastic plate 12 to deform radially and bulge, thus contacting and squeezing the outer wall of the telescopic shaft 5, thereby generating radial extrusion force on the telescopic shaft 5, thus providing radial support for the telescopic shaft 5. This ensures that the telescopic shaft 5 is always coaxially set with the hydraulic telescopic rod 4 during the extension process, thereby improving the stability of the connection. Through the radial extrusion of the elastic plate 12, the connection between the hydraulic telescopic rod 4 and the telescopic shaft 5 is further supported, improving the support strength of the connection and effectively increasing the service life of the hydraulic telescopic rod 4 and the telescopic shaft 5.

[0019] As a further embodiment of the present invention, the pneumatic unit includes an electric actuator 7 and an air cylinder 8 evenly distributed in the circumference, and a piston 9 that is fixedly connected to the output end of the electric actuator 7 is slidably disposed inside the air cylinder 8.

[0020] Specifically, when the telescopic shaft 5 extends to a preset length, the drive electric actuator 7 drives the piston 9 to move inside the air cylinder 8, thereby driving the piston 9 to compress the air pressure inside the air cylinder 8, thus increasing the air pressure.

[0021] As a further embodiment of this utility model, the air cylinder 8 and the sealing cavity are connected by an air passage 10.

[0022] Specifically, the piston 9 compresses the internal air pressure of the air cylinder 8, thereby increasing the air pressure. This forces the gas in the air cylinder 8 into the sealed cavity through the air passage 10, thereby increasing the internal air pressure of the sealed cavity and causing the elastic plate 12 to deform radially.

[0023] As a further embodiment of this utility model, a rubber layer is provided at the connection between the elastic plate 12 and the arc-shaped air groove 11.

[0024] Specifically, the rubber layer further improves the sealing between the elastic plate 12 and the arc-shaped air groove 11. At the same time, the elastic plate 12 can smoothly bulge and dent due to the compression deformation of the rubber layer.

[0025] As a further embodiment of this utility model, a supporting hydraulic rod is provided between the hydraulic telescopic rod 4 and the rotary table 2.

[0026] Specifically, the angle of the hydraulic telescopic rod 4 can be adjusted by supporting the hydraulic rod.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A telescopic guardrail repair vehicle with a large-span working arm, characterized in that, include: The vehicle body (1) and the rotating platform (2) rotatably mounted on the vehicle body (1); A support base (3) is fixedly installed on a rotating table (2), and a hydraulic telescopic rod (4) is hinged at its top. The output end of the hydraulic telescopic rod (4) is provided with a telescopic shaft (5). The support cylinder (6) sleeved at the connection between the hydraulic telescopic rod (4) and the telescopic shaft (5) has arc-shaped air grooves (11) evenly distributed around its inner wall near the telescopic shaft (5). An arc-shaped elastic plate (12) is provided at the opening of the arc-shaped air groove (11), and a sealed cavity is formed between the elastic plate (12) and the arc-shaped air groove (11). The support cylinder (6) is provided with a pneumatic unit on the inner wall near the hydraulic telescopic rod (4). The pneumatic unit adjusts the air pressure inside the sealing cavity to increase the pressure and push the elastic plate (12) to bulge and deform towards the outer wall of the telescopic shaft (5) to provide radial compression support for the telescopic shaft (5).

2. The telescopic guardrail repair vehicle with a large-span working arm according to claim 1, characterized in that, The pneumatic unit includes an electric actuator (7) and an air cylinder (8) arranged circumferentially. A piston (9) is slidably arranged inside the air cylinder (8) and is fixedly connected to the output end of the electric actuator (7).

3. The telescopic guardrail repair vehicle with a large-span working arm according to claim 2, characterized in that, The air cylinder (8) is connected to the sealing cavity through an air passage (10).

4. The telescopic guardrail repair vehicle with a large-span working arm according to claim 1, characterized in that, A rubber layer is provided at the connection between the elastic plate (12) and the arc-shaped air groove (11).

5. The telescopic guardrail repair vehicle with a large-span working arm according to claim 1, characterized in that, A supporting hydraulic rod is provided between the hydraulic telescopic rod (4) and the rotary table (2).

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