Guardrail crossing device

Abstract

The utility model relates to a guardrail crossing device which is composed of an upper transition layer, a first-order locking mechanism, a second-order locking mechanism, a third-order locking mechanism, a fourth-order locking mechanism, a first-layer supporting leg, a second-layer supporting leg and a third-layer supporting leg. The upper transition layer is composed of a transition round pipe and a connecting round pipe. The first-order locking mechanism, the second-order locking mechanism, the third-order locking mechanism and the fourth-order locking mechanism are the same in structural form and comprise locking platforms, locking pin shafts and connecting plates. The first-layer supporting legs, the second-layer supporting legs and the third-layer supporting legs are the same in structural form and form a telescopic guardrail crossing device through cooperation and connection of all stages of locking mechanisms and all stages of supporting legs, and convenience and safety are provided for maintenance personnel to cross a guardrail.

Description

Technical Field

[0001] This utility model patent belongs to the technical field of highway maintenance equipment, specifically relating to a guardrail crossing device. Background Technology

[0002] With the increase in the mileage of expressways, the road network density has also increased year by year, benefiting more people's daily travel and the development of the warehousing and logistics industry. According to standards and specifications, the center height of a two-wave steel guardrail is generally no less than 60cm, while the height of a three-wave steel guardrail and reinforced guardrails is even higher. During the daily maintenance of expressways, it is necessary to frequently cross guardrails to inspect and maintain the roadbed, slopes, drainage channels, and bridges and culverts. Because the guardrail surface is smooth and wavy, it is not easy to step on or put weight on, posing a significant safety hazard to maintenance personnel when crossing. Therefore, a portable and foldable guardrail crossing device is designed to facilitate crossing guardrails for maintenance personnel during daily maintenance and improve the safety of the crossing process. Utility Model Content

[0003] The technical problem this utility model aims to solve is to improve the safety of maintenance personnel crossing guardrails and to provide convenience for them to do so.

[0004] The technical solution adopted by this utility model is: a guardrail crossing device, including an upper transition layer, a first-stage locking mechanism, a second-stage locking mechanism, a third-stage locking mechanism, a fourth-stage locking mechanism, a first-stage support leg, a second-stage support leg, and a third-stage support leg.

[0005] The upper transition layer is composed of a transition tube and a connecting tube. The transition tube and the connecting tube are designed as an integral unit. The connecting tube is threaded. The transition tube and the connecting tube together form the upper transition layer.

[0006] The first-stage, second-stage, third-stage, and fourth-stage locking mechanisms have the same structural form, including a locking platform, a locking pin, and a connecting plate. Each end of the locking platform has a longitudinal shaft tube with a transverse shaft hole on its side. The locking platform has transverse reinforcing ribs inside, with both ends connected to the shaft tubes. Each side of the horizontal end face of the locking platform has a sliding shaft hole and two locking holes. The locking pin consists of a horizontal shaft and a longitudinal shaft, with the cylindrical surfaces of the longitudinal and horizontal shafts connected. The connecting plate consists of a horizontal plate and a fixed shaft; the fixed shaft is connected to the upper part of the horizontal plate, and a shaft hole is opened at the lower part of the horizontal plate. The horizontal shaft of the locking pin engages with the horizontal shaft hole of the locking platform, the vertical shaft of the locking pin engages with the sliding shaft hole on the horizontal end face of the locking platform, the shaft hole below the horizontal plate of the connecting plate engages with the vertical shaft of the locking pin, and the fixed shaft above the connecting plate engages with the locking hole on the horizontal end face of the locking platform.

[0007] The first-layer support leg, the second-layer support leg, and the third-layer support leg have the same structural form, which is a circular tube configuration. Each of the upper and lower ends has a shaft hole. The first-layer support leg, the second-layer support leg, and the third-layer support leg only differ in the diameter of the cross-section. The third-layer support leg has a threaded section at its top.

[0008] The first-layer support leg engages with the shaft tube of the locking platform of the first-stage locking mechanism. The shaft hole at the lower end of the first-layer support leg and the transverse shaft hole on the side of the locking platform of the first-stage locking mechanism engage with the transverse shaft of the locking pin of the first-stage locking mechanism. Furthermore, the longitudinal shaft of the locking pin of the first-stage locking mechanism engages with the sliding shaft hole on the transverse end face of the locking platform of the first-stage locking mechanism, allowing the locking pin of the first-stage locking mechanism to move within the sliding shaft hole of the locking platform. When the locking pin of the first-stage locking mechanism moves to the inner side of the sliding shaft hole of the locking platform, the shaft hole below the transverse plate of the connecting plate of the first-stage locking mechanism engages with the first-stage locking mechanism. The locking pin of the mechanism engages with the longitudinal shaft, and the fixed shaft above the connecting plate of the first-stage locking mechanism engages with the locking hole on the inner side of the horizontal end face of the locking platform of the first-stage locking mechanism. At this time, the first-stage locking mechanism can move on the first-layer support leg. When the locking pin of the first-stage locking mechanism moves to the outside of the sliding shaft hole of the locking platform of the first-stage locking mechanism, the shaft hole below the horizontal plate of the connecting plate of the first-stage locking mechanism engages with the longitudinal shaft of the locking pin of the first-stage locking mechanism, and the fixed shaft above the connecting plate of the first-stage locking mechanism engages with the locking hole on the outer side of the horizontal end face of the locking platform of the first-stage locking mechanism. At this time, the first-stage locking mechanism and the first-layer support leg are in a locked state. The engagement of the remaining locking mechanisms with each layer support leg is exactly the same.

[0009] The first-stage locking mechanism is located below the first-layer support leg, and the second-stage locking mechanism is located above the first-layer support leg. The second-layer support leg is fitted inside the inner tube of the first-layer support leg, and the second-stage locking mechanism locks the second-layer support leg and the first-layer support leg together. The third-stage locking mechanism is located above the second-layer support leg, and the third-layer support leg is fitted inside the inner tube of the second-layer support leg, and the third-stage locking mechanism locks the second-layer support leg and the third-layer support leg together. The top of the third-layer support leg is threadedly connected to the connecting round tube of the upper transition layer. This completes the overall structure of a guardrail crossing device.

[0010] The specific usage is as follows: When the guardrail overpass device is not in use, the first-stage locking mechanism and the first-layer support leg are locked, the second-stage locking mechanism and the first-layer support leg are in a sliding state, the second-stage locking mechanism can move on the first-layer support leg, the second-layer support leg can freely extend and retract within the first-layer support leg, the third-stage locking mechanism and the second-layer support leg are in a sliding state, the third-stage locking mechanism can move on the second-layer support leg, the third-layer support leg can freely extend and retract within the second-layer support leg, thereby retracting the third-layer support leg into the second-layer support leg and retracting the second-layer support leg into the first-layer support leg, thus realizing the folding of the entire guardrail overpass device.

[0011] When the guardrail crossing device is needed, the first-stage locking mechanism engages with the shaft hole below the first-layer support leg and is locked. The second-stage locking mechanism is locked with the first-layer support leg, and the shaft hole below the second-layer support leg engages with the shaft hole above the first-layer support leg, thus fixing the second-layer support leg inside the first-layer support leg. The third-stage locking mechanism is locked with the second-layer support leg, and the shaft hole below the third-layer support leg engages with the shaft hole above the second-layer support leg, thus fixing the third-layer support leg inside the second-layer support leg. The fourth-stage locking mechanism engages with the shaft hole above the third-layer support leg and locks it in place. The entire device forms a four-step system, providing support for people crossing the guardrail. The overall telescopic length of the device is adjustable to accommodate guardrails of different heights. The upper transition layer is an arc-shaped transition, which can accommodate corrugated steel guardrails and composite steel guardrails with a wide range of widths.

[0012] The beneficial effects of this utility model are: the guardrail crossing device is telescopic and the overall height is adjustable, which can adapt to guardrails of different heights, providing convenience for maintenance personnel to cross the guardrail for inspection and maintenance work, and improving the safety of climbing over the guardrail. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the guardrail crossing device described in this utility model;

[0014] Figure 2 This is a schematic diagram of the locking mechanism of a guardrail crossing device according to the present invention;

[0015] Figure 3 This is a schematic diagram of the locking pin of the locking mechanism of the guardrail crossing device described in this utility model;

[0016] Figure 4 This is a schematic diagram of the connecting plate of the locking mechanism of the guardrail crossing device described in this utility model;

[0017] Figure 5This is a schematic diagram of the locking platform of the locking mechanism of the guardrail crossing device described in this utility model;

[0018] Figure 6 This is a schematic diagram of the support leg of the guardrail crossing device described in this utility model;

[0019] Figure 7 This is a schematic diagram of the upper transition layer of a guardrail crossing device according to the present invention;

[0020] In the diagram: 1. Upper transition layer; 2. Fourth-stage locking mechanism; 3. Third-stage support leg; 4. Third-stage locking mechanism; 5. Second-stage support leg; 6. Second-stage locking mechanism; 7. First-stage support leg; 8. First-stage locking mechanism; 9. Connecting plate; 10. Locking pin; 11. Locking platform; 12. Transition tube; 13. Connecting tube. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0022] See appendix Figures 1 to 7 A guardrail crossing device includes an upper transition layer, a first-stage locking mechanism, a second-stage locking mechanism, a third-stage locking mechanism, a fourth-stage locking mechanism, a first-stage support leg, a second-stage support leg, and a third-stage support leg.

[0023] The upper transition layer 1 is composed of a transition round tube 12 and a connecting round tube 13. The transition round tube 12 and the connecting round tube 13 are integrated into one piece. The connecting round tube 13 is threaded. The transition round tube 12 and the connecting round tube 13 together form the upper transition layer 1.

[0024] The first-stage locking mechanism 8, the second-stage locking mechanism 6, the third-stage locking mechanism 4, and the fourth-stage locking mechanism 2 have the same structural form, including a locking platform 11, a locking pin 10, and a connecting plate 9. Each end of the locking platform 11 has a longitudinal shaft tube with a transverse shaft hole on its side. The locking platform 11 has transverse reinforcing ribs inside, with both ends connected to the shaft tubes. Each side of the transverse end face of the locking platform 11 has a sliding shaft hole and two locking holes. The locking pin 10 consists of a transverse shaft and a longitudinal shaft, with the cylindrical surfaces of the longitudinal and transverse shafts connected. The connecting plate 9 consists of a horizontal plate and a fixed shaft, with the fixed shaft connected above the horizontal plate and a shaft hole below the horizontal plate. The horizontal shaft of the locking pin 10 engages with the horizontal shaft hole of the locking platform, the vertical shaft of the locking pin 10 engages with the sliding shaft hole on the horizontal end face of the locking platform 11, the shaft hole below the horizontal plate of the connecting plate 9 engages with the vertical shaft of the locking pin 10, and the fixed shaft above the connecting plate 9 engages with the locking hole on the horizontal end face of the locking platform 11.

[0025] The first-layer support leg 7, the second-layer support leg 5, and the third-layer support leg 3 have the same structural form, which is a circular tube configuration. Each of them has a shaft hole at both the top and bottom ends. The only difference between the first-layer support leg 7, the second-layer support leg 5, and the third-layer support leg 3 is the diameter of the cross-section. In addition, a thread is provided at the top of the third-layer support leg 3.

[0026] The first-layer support leg 7 engages with the shaft tube of the locking platform 11 of the first-stage locking mechanism 8. The shaft hole at the lower end of the first-layer support leg 7 and the transverse shaft hole on the side of the locking platform 11 of the first-stage locking mechanism 8 engage with the transverse shaft of the locking pin 10 of the first-stage locking mechanism 8. Furthermore, the longitudinal shaft of the locking pin 10 of the first-stage locking mechanism engages with the sliding shaft hole on the transverse end face of the locking platform 11 of the first-stage locking mechanism 8, allowing the locking pin 10 of the first-stage locking mechanism 8 to move within the sliding shaft hole of the locking platform 11 of the first-stage locking mechanism 8. When the locking pin 10 of the first-stage locking mechanism 8 moves to the inner side of the sliding shaft hole of the locking platform 11 of the first-stage locking mechanism 8, the shaft hole below the transverse plate of the connecting plate 9 of the first-stage locking mechanism 8 engages with the transverse shaft of the locking platform 11 of the first-stage locking mechanism 8. The locking pin 10 of the locking mechanism 8 engages with the longitudinal shaft, and the fixed shaft above the connecting plate 9 of the first-stage locking mechanism 8 engages with the locking hole on the inner side of the horizontal end face of the locking platform 11 of the first-stage locking mechanism 8. At this time, the first-stage locking mechanism 8 can move on the first-layer support leg 7. When the locking pin 10 of the first-stage locking mechanism 8 moves to the outside of the sliding shaft hole of the locking platform 11 of the first-stage locking mechanism, the shaft hole below the horizontal plate of the connecting plate 9 of the first-stage locking mechanism 8 engages with the longitudinal shaft of the locking pin 10 of the first-stage locking mechanism 8, and the fixed shaft above the connecting plate 9 of the first-stage locking mechanism 8 engages with the locking hole on the outer side of the horizontal end face of the locking platform 11 of the first-stage locking mechanism 8. At this time, the first-stage locking mechanism 8 and the first-layer support leg 7 are in a locked state. The engagement of the remaining locking mechanisms with each layer support leg is exactly the same.

[0027] The first-stage locking mechanism 8 is located below the first-layer support leg 7, and the second-stage locking mechanism 6 is located above the first-layer support leg 7. The second-layer support leg 5 is fitted inside the inner tube of the first-layer support leg 7, and the second-stage locking mechanism 6 locks the second-layer support leg 5 and the first-layer support leg 7 together. The third-stage locking mechanism 4 is located above the second-layer support leg 5, and the third-layer support leg 3 is fitted inside the inner tube of the second-layer support leg 5, and the third-stage locking mechanism 4 locks the second-layer support leg 5 and the third-layer support leg 3 together. The top of the third-layer support leg 3 is threadedly connected to the connecting round tube 13 of the upper transition layer 1. This forms the overall structure of a guardrail crossing device.

[0028] The specific usage is as follows: When the guardrail overpass device is not in use, the first-stage locking mechanism 8 and the first-layer support leg 7 are locked, the second-stage locking mechanism 6 and the first-layer support leg 7 are in a sliding state, the second-stage locking mechanism 6 can move on the first-layer support leg 7, the second-layer support leg 5 can freely extend and retract within the first-layer support leg 7, the third-stage locking mechanism 4 and the second-layer support leg 5 are in a sliding state, the third-stage locking mechanism 4 can move on the second-layer support leg 5, and the third-layer support leg 3 can freely extend and retract within the second-layer support leg 5, thereby retracting the third-layer support leg 3 into the second-layer support leg 5 and retracting the second-layer support leg 5 into the first-layer support leg 7, thus realizing the folding of the entire guardrail overpass device.

[0029] When the guardrail crossing device is needed, the first-stage locking mechanism 8 engages with the shaft hole below the first-layer support leg 7 and is locked; the second-stage locking mechanism 6 engages with the first-layer support leg 7; the shaft hole below the second-layer support leg 5 engages with the shaft hole above the first-layer support leg 7; the second-stage locking mechanism 6 fixes the second-layer support leg 5 inside the first-layer support leg 7; the third-stage locking mechanism 4 engages with the second-layer support leg 5; the shaft hole below the third-layer support leg 3 engages with the shaft hole above the second-layer support leg 5; the third-stage locking mechanism 4 fixes the third-layer support leg 3 inside the second-layer support leg 5; the fourth-stage locking mechanism 2 engages with the shaft hole above the third-layer support leg 3 and locks it in place. The entire device forms a four-step system, providing support for people crossing the guardrail. The overall telescopic length of the device is adjustable to accommodate guardrails of different heights. The upper transition layer is an arc-shaped transition, which can accommodate corrugated steel guardrails and composite steel guardrails of varying widths.

Claims

1. A guardrail crossing device, characterized in that: It includes an upper transition layer, a first-stage locking mechanism, a second-stage locking mechanism, a third-stage locking mechanism, a fourth-stage locking mechanism, a first-stage support leg, a second-stage support leg, and a third-stage support leg; the upper transition layer (1) is composed of a transition round tube (12) and a connecting round tube (13), the transition round tube (12) and the connecting round tube (13) are integrated, and the connecting round tube (13) is threaded; the first-stage locking mechanism (8), the second-stage locking mechanism (6), and the third-stage locking mechanism (4) The four-stage locking mechanism (2) has the same structure, including a locking platform (11), a locking pin (10), and a connecting plate (9). The locking platform (11) has a longitudinal shaft tube at each end, and a transverse shaft hole is opened on the side of the shaft tube. The locking platform (11) has a transverse reinforcing rib inside, and the two ends of the transverse reinforcing rib are respectively connected to the shaft tube. The locking platform (11) has a sliding shaft hole and two locking holes on each side of the transverse end face. The locking pin (10) is formed by a transverse shaft tube. The connecting plate (9) consists of a shaft and a longitudinal shaft, with the cylindrical surfaces of the longitudinal shaft and the transverse shaft connected together. The connecting plate (9) is composed of a transverse plate and a fixed shaft. The fixed shaft is connected above the transverse plate, and a shaft hole is opened below the transverse plate. The transverse shaft of the locking pin (10) is engaged with the transverse shaft hole of the locking platform. The longitudinal shaft of the locking pin (10) is engaged with the sliding shaft hole on the transverse end face of the locking platform (11). The shaft hole below the transverse plate of the connecting plate (9) is engaged with the longitudinal shaft of the locking pin (10). In conjunction with each other, the fixed shaft above the connecting plate (9) engages with the locking hole on the horizontal end face of the locking platform (11); the first-layer support leg (7), the second-layer support leg (5), and the third-layer support leg (3) have the same structural form, which is a circular tube configuration, with a shaft hole at each of the upper and lower ends. The first-layer support leg (7), the second-layer support leg (5), and the third-layer support leg (3) differ only in the diameter of the cross-section. In addition, a thread is provided at the top of the third-layer support leg (3).

2. The guardrail crossing device as described in claim 1, characterized in that: The upper transition layer (1) is connected to the upper part of the three-layer support leg (3) by the pipe thread of the connecting round tube (13), and the connection is tight. The transition round tube (12) of the upper transition layer (1) is arc-shaped, which can adapt to the guardrail with a large width range.

3. The guardrail crossing device as described in claim 1, characterized in that: The locking platform (11) has a longitudinal shaft tube at each end, and a transverse shaft hole is opened on the side of the shaft tube. The locking platform (11) has a transverse reinforcing rib inside, and the two ends of the transverse reinforcing rib are respectively connected to the shaft tube. The locking platform (11) has a sliding shaft hole and two locking holes on each side of the transverse end face. The locking pin (10) is composed of a transverse shaft rod and a longitudinal shaft rod, and the cylindrical surfaces of the longitudinal shaft rod and the transverse shaft rod are connected. The connecting plate (9) is composed of a transverse plate and a fixed shaft. A fixed shaft is connected at the top, and a shaft hole is opened below the horizontal plate. The horizontal shaft of the locking pin (10) is engaged with the horizontal shaft hole of the locking platform (11). The vertical shaft of the locking pin (10) is engaged with the sliding shaft hole on the horizontal end face of the locking platform (11). The shaft hole below the horizontal plate of the connecting plate (9) is engaged with the vertical shaft of the locking pin (10). The fixed shaft above the connecting plate (9) is engaged with the locking hole on the horizontal end face of the locking platform (11).

Images