Guardrail repair truck with automatic material loading and unloading function
By installing a limit plate and an air circuit unit with an airbag on the guardrail repair vehicle, the problem of inertial displacement during guardrail loading and unloading is solved, achieving stable loading and unloading of guardrails and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING TUOFENG TECHNOLOGY CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-04
AI Technical Summary
During the loading and unloading process by emergency repair vehicles, the guardrails are prone to shifting due to inertia, which reduces their adhesion and poses a risk of falling off, resulting in low safety during the loading and unloading process.
The air circuit unit design, which combines a limiting plate and an airbag, uses air pressure boosting in the air groove to push the limiting plate and airbag to clamp the guardrail, thereby achieving stable limiting and buffering of the guardrail and preventing shaking.
It improves the stability and safety of the guardrail loading and unloading process, reduces the risk of guardrail falling off, and shortens the material loading and unloading time.
Smart Images

Figure CN224589004U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering vehicle technology, specifically to a guardrail repair vehicle with automatic material loading and unloading function. Background Technology
[0002] With the development of highways, guardrails are usually installed on both sides of the highway for guidance and protection in order to make highway driving safer and more orderly. Once the guardrails are damaged, they need to be repaired in time. Usually, guardrail repair vehicles are used to quickly load, unload and transport the guardrails to achieve rapid repair.
[0003] Because repair vehicles typically use vacuum suction to load and unload guardrails, the guardrails are prone to shifting due to inertia during the process, which reduces the suction force and may even cause them to fall off, resulting in low safety during loading and unloading. Utility Model Content
[0004] The purpose of this utility model is to provide a guardrail repair vehicle with automatic material loading and unloading function to solve the technical problem of guardrails easily falling off during loading and unloading.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a guardrail repair vehicle with automatic material loading and unloading function, comprising: Vehicle body; A loading and unloading mechanism that moves along the length of the vehicle body includes: The loading and unloading plate with lifting mechanism has suction cups arrayed at its bottom; Air slots are symmetrically opened on both sides of the loading and unloading plate, and pneumatic plates are slidably arranged inside them. A limit plate is provided at the bottom of the pneumatic plate. An airbag is installed on one side of the limiting plate and communicates with the inside of the air groove. The air groove is inflated and pressurized to push the pneumatic plate to move the limiting plate to both sides of the guardrail. A valve mechanism is installed between the air tank and the airbag communication channel. When the limit plate moves to both sides of the guardrail, the valve mechanism opens, so that the airbag inflates and deforms to clamp onto both sides of the guardrail. An air passage unit is connected between the suction cup and the air groove. It evacuates the suction cup to adsorb the guardrail plate and fills the air groove with the extracted gas to regulate and increase the air pressure inside the air groove.
[0006] Preferably, the air groove and the air bag are connected by an air passage, and the valve mechanism includes an elastic block that is elastically disposed in the air passage, and the elastic block has a through hole that corresponds to the air passage.
[0007] Preferably, the top surface of the loading and unloading plate is provided with an air box that communicates with the suction cup, the top of the air box is connected to an air cylinder, and the top of the air cylinder is equipped with a cylinder.
[0008] Preferably, the cylinder output end is fixedly provided with a piston located inside the cylinder, the cavity at the top of the piston is connected to the air groove through a connecting pipe, and the cavity at the bottom of the piston is connected to the air box.
[0009] Preferably, a mobile vehicle is symmetrically slidably arranged on the vehicle body, a hydraulic rod is installed on the top of the mobile vehicle, and a top plate is fixedly installed at the output end of the hydraulic rod.
[0010] Preferably, the top plate and the loading / unloading plate are connected by a lifting rod.
[0011] In the above technical solution, the guardrail repair vehicle with automatic material loading and unloading function provided by this utility model has the following beneficial effects: This invention utilizes a limiting plate and airbags. The pneumatic unit draws gas from the suction cup and fills symmetrically arranged air slots on the loading / unloading plate, thereby increasing the internal air pressure of the slots. This pressure boosts the pneumatic plate, causing it to move towards the guardrail, which in turn moves the limiting plate synchronously out of the slot. When the pneumatic plate reaches the bottom of the slot, the limiting plate is positioned on both sides of the guardrail. Simultaneously, the valve mechanism opens the communication channel between the slot and the airbag, allowing gas from the slot to fill the airbag. The airbag inflates and expands, clamping the guardrail on both sides, further limiting its position. The airbags also cushion the inertia of the guardrail during movement, preventing it from swaying and shifting due to inertia. This further prevents the suction cups from failing, making the loading and unloading of the guardrail more stable and improving safety during the process. Attached Figure Description
[0012] 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.
[0013] Figure 1 A front perspective view provided for an embodiment of this utility model; Figure 2 A rear perspective view provided for an embodiment of this utility model; Figure 3 This is a side sectional view of an embodiment of the present utility model. Figure 4 This is an enlarged structural diagram of point A provided in an embodiment of the present utility model; Figure 5 This is an enlarged structural diagram of section B provided in an embodiment of the present utility model.
[0014] Explanation of reference numerals in the attached figures: 1. Vehicle body; 2. Mobile vehicle; 3. Hydraulic rod; 4. Top plate; 5. Hoisting rod; 6. Cylinder; 7. Air cylinder; 8. Connecting pipe; 9. Air box; 10. Loading and unloading plate; 11. Piston; 12. Suction cup; 13. Pneumatic plate; 14. Limiting plate; 15. Airbag; 16. Elastic block; 17. Air passage; 18. Air groove. Detailed Implementation
[0015] 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.
[0016] like Figure 1-5 As shown, a guardrail repair vehicle with automatic material loading and unloading function includes: Vehicle body 1; A loading and unloading mechanism that moves along the length of the vehicle body 1 includes: The loading and unloading plate 10 with lifting and lowering is provided with suction cups 12 arranged in an array at its bottom; Air grooves 18 are symmetrically opened on both sides of the loading and unloading plate 10, and pneumatic plates 13 are slidably arranged inside them. A limit plate 14 is provided at the bottom of the pneumatic plate 13. An airbag 15 is installed on one side of the limiting plate 14 and communicates with the inside of the air groove 18. The air groove 18 is inflated and pressurized to push the pneumatic plate 13, which in turn moves the limiting plate 14 to both sides of the guardrail. A valve mechanism is provided between the air groove 18 and the airbag 15. When the limit plate 14 moves to both sides of the guardrail, the valve mechanism opens so that the airbag 15 inflates and deforms to clamp onto both sides of the guardrail. An air passage unit is connected between the suction cup 12 and the air groove 18. It evacuates the suction cup 12 to adsorb the guardrail plate and fills the air groove 18 with the extracted gas to adjust the internal air pressure of the air groove 18.
[0017] Specifically, when loading and unloading guardrails, repair vehicles typically use vacuum suction. During this process, the guardrails are prone to shifting due to inertia, leading to reduced suction force and even the risk of detachment. This results in low safety during loading and unloading. In contrast, when loading and unloading guardrail panels, the suction cups 12 arrayed at the bottom of the loading / unloading plate 10 are lowered to fit against the top surface of the guardrail. The air circuit unit creates a vacuum in the space between the suction cups 12 and the top of the guardrail, resulting in a negative pressure state between the suction cups 12 and the top of the guardrail. This allows for suction and movement of the guardrail. The entire process is automated, eliminating the need for manual handling and securing, and significantly reducing material loading and unloading time during repairs.
[0018] Furthermore, the pneumatic unit draws gas from the suction cup 12 and fills the symmetrically opened air grooves 18 on the loading and unloading plate 10, thereby adjusting and increasing the air pressure inside the air grooves 18 to push the pneumatic plate 13 towards the guardrail, thereby driving the limiting plate 14 to move synchronously and move out of the air groove 18. When the pneumatic plate 13 moves to the bottom of the air groove 18, the limiting plate 14 is just located on both sides of the guardrail. At the same time, the valve mechanism opens the communication channel between the air groove 18 and the airbag 15, thereby filling the airbag 15 with gas from the air groove 18. The airbag 15 inflates and deforms, clamping the guardrail on both sides, thereby further limiting the guardrail on both sides. The airbag 15 also buffers the inertia of the guardrail during movement, preventing the guardrail from shaking under inertia and causing positional deviation, thereby further preventing the suction cup 12 from failing, making the loading and unloading of the guardrail more stable, and thus improving the safety of the loading and unloading process.
[0019] As a further embodiment of the present invention, the air groove 18 and the air bag 15 are connected by an air passage 17, and the valve mechanism includes an elastic block 16 elastically disposed in the air passage 17, and the elastic block 16 is provided with a through hole corresponding to the air passage 17.
[0020] Specifically, when the pneumatic plate 13 moves to the bottom of the air groove 18, the inner wall of the outlet at the bottom of the air groove 18 squeezes the elastic block 16 to compress it elastically, so that the through hole opened on the elastic block 16 corresponds to the air passage 17, thereby opening the air passage 17 and connecting the air groove 18 and the airbag 15, so that the gas in the air groove 18 fills the airbag 15, and the airbag 15 inflates, deforms and expands to clamp the guardrail on both sides.
[0021] As a further embodiment of this utility model, the top surface of the loading and unloading plate 10 is provided with an air box 9 that is connected to the suction cup 12, the top of the air box 9 is connected to an air cylinder 7, and the top of the air cylinder 7 is equipped with an air cylinder 6.
[0022] As a further embodiment of this utility model, a piston 11 is fixedly installed at the output end of the cylinder 6 inside the air cylinder 7. The cavity at the top of the piston 11 is connected to the air groove 18 through a connecting pipe 8, and the cavity at the bottom of the piston 11 is connected to the air box 9.
[0023] Specifically, when vacuuming the cavity between the suction cup 12 and the top surface of the guardrail, the cylinder 6 at the top of the air cylinder 7 is activated, which drives the piston 11 to move upward inside the air cylinder 7, thereby evacuating the air from the air box 9 and adjusting the air box 9 to a negative pressure state, thus evacuating the air from inside the suction cup 12, so that the suction cup 12 is adsorbed onto the top surface of the guardrail. At the same time, the volume of the cavity at the top of the piston 11 decreases and the air pressure increases, thereby further introducing the gas into the air groove 18 through the connecting pipe 8.
[0024] As a further embodiment of this utility model, a mobile vehicle 2 is symmetrically slidably arranged on the vehicle body 1, a hydraulic rod 3 is installed on the top of the mobile vehicle 2, and a top plate 4 is fixedly installed at the output end of the hydraulic rod 3.
[0025] As a further embodiment of this utility model, the top plate 4 and the loading / unloading plate 10 are connected by a lifting rod 5.
[0026] Specifically, the mobile vehicle 2 can move the guardrail on the vehicle body 1, and the hydraulic rod 3 can lift and lower the loading and unloading plate 10, thereby realizing the automatic loading and unloading of the guardrail.
[0027] The above 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 guard rail repair vehicle with automatic material loading and unloading function, characterized in that, include: Vehicle body (1); A loading and unloading mechanism that moves along the length of the vehicle body (1) includes: The loading and unloading plate (10) with lifting mechanism has suction cups (12) arranged in an array at its bottom. Air grooves (18) are symmetrically opened on both sides of the loading and unloading plate (10), and pneumatic plates (13) are slidably arranged inside them. A limit plate (14) is provided at the bottom of the pneumatic plate (13). An airbag (15) is provided on one side surface of the limiting plate (14) and communicates with the inside of the air groove (18). The air groove (18) is inflated and pressurized to push the pneumatic plate (13) to move the limiting plate (14) to both sides of the guardrail. A valve mechanism is set between the air groove (18) and the airbag (15) connecting channel. When the limit plate (14) moves to both sides of the guardrail, the valve mechanism opens so that the airbag (15) inflates and deforms to clamp onto both sides of the guardrail. The air passage unit connected between the suction cup (12) and the air groove (18) evacuates the suction cup (12) to adsorb the guardrail plate and fills the air groove (18) with the extracted gas to adjust the air pressure inside the air groove (18).
2. The guardrail repair vehicle with automatic material handling function according to claim 1, characterized in that, The air groove (18) and the air bag (15) are connected by an air passage (17). The valve mechanism includes an elastic block (16) elastically disposed in the air passage (17). The elastic block (16) has a through hole corresponding to the air passage (17).
3. The guardrail repair vehicle with automatic material handling function according to claim 1, characterized in that, The top surface of the loading and unloading plate (10) is provided with an air box (9) that is connected to the suction cup (12), and an air cylinder (7) is connected to the top of the air box (9). A cylinder (6) is installed on the top of the air cylinder (7).
4. The guardrail repair truck with automatic material handling function according to claim 3, characterized in that, The cylinder (6) has a piston (11) fixedly installed at the output end inside the cylinder (7). The cavity at the top of the piston (11) is connected to the air groove (18) through a connecting pipe (8), and the cavity at the bottom of the piston (11) is connected to the air box (9).
5. The guardrail repair truck with automatic material handling function according to claim 1, characterized in that, A mobile vehicle (2) is symmetrically slidably mounted on the vehicle body (1). A hydraulic rod (3) is installed on the top of the mobile vehicle (2). A top plate (4) is fixedly mounted on the output end of the hydraulic rod (3).
6. The guardrail repair truck with automatic material handling function according to claim 5, characterized in that, The top plate (4) and the loading / unloading plate (10) are connected by a lifting rod (5).