U-shaped sleeve for door-shaped guardrail and door-shaped guardrail

Abstract

The invention relates to the field of road safety protection, in particular to a U-shaped sleeve for a door-shaped guardrail and the door-shaped guardrail, which comprises two longitudinal sleeves and two transverse sleeves for connecting guardrail upright posts, and two connecting sleeves for connecting the longitudinal sleeves and the transverse sleeves, the transverse casing pipe and the two longitudinal casing pipes are connected through the two connecting pipe sleeves to form the U-shaped casing pipe, the connecting pipe sleeves are provided with mounting cavities allowing the longitudinal casing pipes and the transverse casing pipe to be embedded, and the U-shaped casing pipe is divided into the longitudinal casing pipe, the transverse casing pipe and the connecting pipe sleeves connecting the longitudinal casing pipe and the transverse casing pipe in a split mode, so that single-side mounting of the door-shaped guardrail can be achieved; in the installation process, the assembly work on one side can be completed firstly, and then the assembly work on the other side is conducted, so that the influence of construction on traffic is reduced, and the problems that traffic is inconvenient and the accident risk is increased due to the fact that a traditional integrally-formed U-shaped sleeve needs to occupy overtaking lanes on the left side and the right side of an expressway at the same time in the installation process are solved.

Description

Technical Field

[0001] The invention relates to the field of highway safety protection, in particular to a U-shaped sleeve for a gate-type guardrail and the gate-type guardrail. Background Art

[0002] In the field of highway safety protection, gate-type guardrails are double-sided co-constructed guardrails, primarily used in median strips between two-way highways. They connect the circular guardrail columns on either side of the median strip via a U-shaped sleeve, forming a single unit. Guardrails are then attached to each side, ultimately creating a double-sided co-constructed guardrail. This guardrail can better absorb and disperse impact energy through the synergistic effect of the guardrails on both sides. For example, when a vehicle loses control and collides with the gate-type guardrail on the median strip, not only will the guardrail on the impact side deform to cushion the impact, but the guardrail on the other side will also be subject to a certain amount of force through the middle U-shaped sleeve, thereby sharing the impact force. This effectively reduces the risk of vehicles crossing the median strip into the oncoming lane, greatly improving the protection capabilities for vehicles on two-way highways.

[0003] The U-shaped sleeve of the gate-type guardrail on the market today is formed in one piece. When installing this gate-type guardrail, it is necessary to assemble and connect the U-shaped sleeve with the two guardrail posts at the same time. However, the guardrail posts on both sides are close to the overtaking lanes on the left and right sides. Therefore, in order to ensure the driving safety of construction workers and vehicles, it is necessary to close and occupy the overtaking lanes on both sides of the left and right sides of the expressway for construction, which will cause great inconvenience to traffic, seriously affect the normal traffic efficiency of the expressway, and increase the risk of traffic congestion and accidents. Therefore, it is necessary to develop a U-shaped sleeve and gate-type guardrail for gate-type guardrails to solve the problem that the U-shaped sleeve of the existing gate-type guardrail is formed in one piece, and the installation of the gate-type guardrail requires occupying the overtaking lanes on both sides for construction at the same time, which leads to inconvenience in traffic and increased risk of accidents. Summary of the Invention

[0004] In view of the above-mentioned problem that the installation of the existing gate-type guardrail requires occupying the overtaking lanes on both sides of the highway for construction, which causes traffic inconvenience, the technical solution adopted by the present invention to solve the technical problem is: A U-shaped sleeve for a door-type guardrail comprises a longitudinal sleeve for connecting a guardrail column, a transverse sleeve, and a connecting sleeve connecting the longitudinal sleeve and the transverse sleeve. Two longitudinal sleeves and two connecting sleeves are provided. The transverse sleeve and the two longitudinal sleeves are connected by the two connecting sleeves to form a U-shaped sleeve. The connecting sleeve is provided with an installation cavity for embedding the longitudinal sleeve and the transverse sleeve.

[0005] Furthermore, the connecting pipe sleeve is provided with a first connecting portion and a second connecting portion, the longitudinal sleeve is provided with a first mounting portion that cooperates with the first connecting portion, and the transverse sleeve is provided with a second mounting portion that cooperates with the second connecting portion.

[0006] Furthermore, the first connecting portion is provided with a first connecting hole, the first mounting portion is provided with a second connecting hole corresponding to the first connecting hole, the second connecting portion is provided with a third connecting hole, and the second mounting portion is provided with a fourth connecting hole corresponding to the third connecting hole, and the first connecting hole and the second connecting hole, and the third connecting hole and the fourth connecting hole are all connected by fasteners.

[0007] Furthermore, the first connection hole is in the shape of an elongated strip and extends in the horizontal direction, the second connection hole is in the shape of an elongated strip and its extension direction is perpendicular to the extension direction of the first connection hole, the third connection hole is in the shape of an elongated strip and extends in the horizontal direction, and the fourth connection hole is in the shape of an elongated strip and its extension direction is perpendicular to the extension direction of the third connection hole.

[0008] Furthermore, the connecting pipe sleeve is provided with an arc-shaped connecting portion connecting the first connecting portion and the second connecting portion, and the extending direction of the first connecting portion and the extending direction of the second connecting portion are perpendicular to each other.

[0009] Furthermore, a first extension portion connected to the first connecting portion and the second connecting portion is provided on the inner side of the corner of the connecting sleeve.

[0010] Furthermore, the cross-section of the transverse sleeve is U-shaped, the opening of the transverse sleeve faces downward, and a reinforcing rib extending along the length direction of the transverse sleeve is provided on the inner side of the transverse sleeve.

[0011] Furthermore, the cross-sectional shape of the connecting sleeve is U-shaped, and the mounting cavity includes a first mounting cavity located at the first connecting part and a second mounting cavity located at the second connecting part. The depth of the first mounting cavity is greater than or equal to the cross-sectional diameter of the first mounting part, and the depth of the second mounting cavity is greater than or equal to the maximum cross-sectional length of the second mounting part.

[0012] The gate-type guardrail comprises the U-shaped sleeve and guardrail plates arranged on both sides of the U-shaped sleeve.

[0013] Furthermore, the guardrail plate includes a first guardrail plate connected to the connecting pipe sleeve and a second guardrail plate connected to the longitudinal sleeve. The first guardrail plate is located above the second guardrail plate and the second guardrail plate, the thickness of the second guardrail plate is greater than the thickness of the first guardrail plate, and the cross-sectional shape of the guardrail plate is corrugated.

[0014] The beneficial effects of the present invention are as follows: The present invention can realize single-sided installation of gate-type guardrail by dividing the U-shaped sleeve into a longitudinal sleeve, a transverse sleeve and a connecting sleeve connecting the two. During the installation process, the assembly work on one side can be completed first, and then the assembly on the other side can be carried out, thereby reducing the impact of construction on traffic and solving the problem that the traditional one-piece U-shaped sleeve needs to occupy the overtaking lanes on both sides of the left and right sides of the highway at the time of installation, causing traffic inconvenience and increased risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the U-shaped sleeve of the present invention.

[0016] Figure 2 1 is an exploded view of the U-shaped sleeve of the present invention.

[0017] Figure 3 It is a cross-sectional view of the U-shaped sleeve of the present invention.

[0018] Figure 4 It is a schematic diagram of the connection between the transverse sleeve and the connecting sleeve of the present invention.

[0019] Figure 5 It is a schematic diagram of the connection between the longitudinal sleeve and the connecting sleeve of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the door-type guardrail of the present invention.

[0021] Figure 7 It is a cross-sectional view of the door-type guardrail of the present invention.

[0022] Figure 8 It is a cross-sectional view of the door-type guardrail of the present invention.

[0023] Figure 9 It is a structural schematic diagram of the longitudinal sleeve of the present invention.

[0024] Figure 10 It is a structural schematic diagram of the connecting pipe sleeve of the present invention.

[0025] Figure 11 It is a structural schematic diagram of the transverse sleeve of the present invention. DETAILED DESCRIPTION

[0026] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. The embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship and movement status of various components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] See also Figures 1 to 11 The U-shaped sleeve for a gate-type guardrail shown in the figure includes a longitudinal sleeve 1 for connecting the guardrail column, a transverse sleeve 2, and a connecting pipe sleeve 3 connecting the longitudinal sleeve 1 and the transverse sleeve 2. There are two longitudinal sleeves 1 and two connecting pipe sleeves 3. The transverse sleeve 2 and the two longitudinal sleeves 1 are connected by the two connecting pipe sleeves 3 to form a U-shaped sleeve. The connecting pipe sleeve 3 is provided with an installation cavity 34 for the longitudinal sleeve 1 and the transverse sleeve 2 to be embedded.

[0030] In the present invention, the U-shaped sleeve is composed of a longitudinal sleeve, a transverse sleeve and a connecting sleeve, wherein two longitudinal sleeves and two connecting sleeves are each provided, the longitudinal sleeve is used to be connected to the guardrail column to provide a vertical support connection foundation for the gate-type guardrail, and the transverse sleeve is arranged horizontally, and is connected to the two longitudinal sleeves through the two connecting sleeves, thereby forming a U-shaped structure. This split structural design changes the pattern of the traditional one-piece U-shaped sleeve. Different from the traditional one-piece U-shaped sleeve that needs to occupy the overtaking lanes on both sides of the left and right sides of the highway for the installation of the gate-type guardrail, the split structure of the U-shaped sleeve of the present invention allows construction personnel to complete the installation operation on a single side of the highway. During the installation process, there is no need to close the opposite lane. The assembly work on one side can be completed first, and then the lane on the other side can be closed to carry out the assembly work on the other side. This greatly reduces the interference of the construction team with the normal traffic on the highway, significantly improves the traffic efficiency of the road during construction, reduces the risk of traffic congestion and the probability of accidents caused by construction, and also greatly reduces the construction difficulty and cost.

[0031] Specifically, when installing a door-type guardrail, the following steps are included: Step S1: Close the overtaking lane on one side of the highway, fix the guardrail post on one side into the preset guardrail post installation hole, then assemble and connect the longitudinal sleeve with the guardrail post, and then connect the connecting pipe sleeve with the longitudinal sleeve to complete the assembly connection of one side of the U-shaped sleeve.

[0032] Step S2: Connect the guardrail panel on one side to the U-shaped sleeve assembled on one side, complete the installation construction on one side of the gate-type guardrail, and release the closure construction of the overtaking lane on the highway on that side.

[0033] Step S3: Close the overtaking lane on the other side of the highway, fix the guardrail post on the other side into the preset guardrail mounting hole, then assemble and connect the longitudinal sleeve with the guardrail post, then connect the connecting pipe sleeve with the longitudinal sleeve, and finally assemble and connect the connecting pipe sleeves on both sides through the transverse sleeve, finally completing the overall assembly and connection of the U-shaped sleeve.

[0034] Step S4, installing and connecting the guardrail plate to the U-shaped sleeve that has completed the overall assembly connection, completing the installation construction of the entire gate-type guardrail, and lifting the closure construction of the overtaking lane of the highway.

[0035] It can be seen from the installation steps of the above-mentioned gate-type guardrail that the present invention can realize the single-sided installation of the gate-type guardrail by splitting the U-shaped sleeve into a longitudinal sleeve, a transverse sleeve and a connecting pipe sleeve connecting the two. During the installation process, the assembly of one side can be completed first, and then the assembly of the other side can be carried out, thereby reducing the impact of construction on traffic and solving the problem that the traditional one-piece U-shaped sleeve needs to occupy the overtaking lanes on both sides of the left and right sides of the highway at the same time during installation, causing traffic inconvenience and increased risk of accidents.

[0036] Furthermore, the connecting sleeve 3 is provided with a first connecting portion 31 and a second connecting portion 32 , the longitudinal sleeve 1 is provided with a first mounting portion 11 that cooperates with the first connecting portion 31 , and the transverse sleeve 2 is provided with a second mounting portion 21 that cooperates with the second connecting portion 32 .

[0037] In the present invention, the connecting pipe sleeve serves as a key component for connecting the longitudinal sleeve and the transverse sleeve, and includes a first connecting part and a second connecting part, and the longitudinal sleeve is provided with a first mounting part that cooperates with the first connecting part. The first mounting part and the first mounting part are connected in cooperation, and the longitudinal sleeve and the connecting pipe sleeve are fixedly connected. Similarly, the transverse sleeve is provided with a second mounting part that cooperates with the second connecting part. The second mounting part and the second mounting part are connected in cooperation, and the transverse sleeve and the connecting pipe sleeve are fixedly connected. Therefore, the cooperation design of the first mounting part and the first connecting part, and the second mounting part and the second connecting part provides precise positioning for the installation of the longitudinal sleeve, the transverse sleeve and the connecting pipe sleeve. During the installation process, the construction personnel can quickly and accurately assemble the various components according to these specific cooperation structures. Furthermore, the first mounting part and the first connecting part, and the second mounting part and the second connecting part can be connected and fixed by welding, threaded connection, bolt connection and other connection methods.

[0038] Furthermore, the first connecting portion 31 is provided with a first connecting hole 311, the first mounting portion 11 is provided with a second connecting hole 111 corresponding to the first connecting hole 311, the second connecting portion 32 is provided with a third connecting hole 321, and the second mounting portion 21 is provided with a fourth connecting hole 211 corresponding to the third connecting hole 321, and the first connecting hole 311 and the second connecting hole 111, and the third connecting hole 321 and the fourth connecting hole 211 are all connected by fasteners.

[0039] In the present invention, the first connecting portion is specifically used to connect with the longitudinal sleeve, and a first connecting hole is provided at this portion. A second connecting hole corresponding to the first connecting hole is correspondingly provided on the longitudinal sleeve. Similarly, the second connecting portion is used to connect with the transverse sleeve, and a third connecting hole is provided. The transverse sleeve has a fourth connecting hole corresponding thereto. During actual installation, fasteners such as bolts and nuts are passed through the corresponding connecting holes to achieve a firm fixed connection between the longitudinal sleeve and the connecting pipe sleeve, and between the transverse sleeve and the connecting pipe sleeve, thereby forming a stable overall structure.

[0040] Based on the connection method of connecting holes and fasteners, during the installation process, construction workers only need to accurately align the connecting holes of the corresponding components, and then tighten the fasteners to complete the connection operation. The installation process is simple and convenient, which greatly improves the installation efficiency. In the later maintenance or component replacement, only the fasteners need to be loosened to easily disassemble the relevant components, which reduces the difficulty and cost of maintenance work and improves maintenance efficiency. In addition, the setting of multiple connecting holes and fasteners can increase the contact area and the number of fastening points between components. When the gate-type guardrail is subjected to external forces such as vehicle collisions, this connection method can evenly disperse the external force to each connection part, effectively avoiding stress concentration in a certain place and causing connection failure, thereby ensuring that the connection between the longitudinal sleeve, the transverse sleeve and the connecting pipe sleeve is firm and reliable, improving the stability and safety of the overall structure of the gate-type guardrail, and ensuring that it can perform its protective function normally under various working conditions.

[0041] Specifically, the first connecting holes are provided in plurality, and the second connecting holes are the same in number and correspond one-to-one with the first connecting holes. Similarly, the third connecting holes are provided in plurality, and the fourth connecting holes are the same in number and correspond one-to-one with the third connecting holes. Such a design can increase the contact area and fastening points between the longitudinal sleeve and the connecting pipe sleeve, and between the transverse sleeve and the connecting pipe sleeve. When the gate-type guardrail is subjected to external forces such as vehicle collision, multiple groups of connecting holes work together to evenly disperse the impact force to each connection part, avoiding stress concentration on a few connection points leading to connection failure. Compared with a single or a small number of connecting holes, this design greatly improves the tensile and shear resistance of the connection part, so that the U-shaped sleeve still maintains structural stability when subjected to external forces, effectively preventing components from loosening and falling off, and ensuring the overall safety and reliability of the gate-type guardrail.

[0042] Furthermore, as a preferred embodiment of the present invention but not a limitation, the number of the first connection holes is two groups, the number of the first connection holes in each group is two and the first connection holes are distributed in the vertical direction.

[0043] Compared with a single connection hole, the two first connection holes distributed in the vertical direction increase the connection points between the longitudinal sleeve and the connecting pipe sleeve, and increase the connection contact area. When the gate-type guardrail is subjected to external force, the double-hole connection can disperse the stress more evenly, avoiding loosening or damage of the connection due to excessive force on a single connection point, effectively improving the stability and reliability of the connection between the longitudinal sleeve and the connecting pipe sleeve, and ensuring the integrity of the overall structure of the gate-type guardrail under complex stress conditions.

[0044] Furthermore, as a preferred embodiment of the present invention but not limiting, the number of the third connection holes is three and they are respectively provided on three sides of the second connection portion.

[0045] Three third connection holes, located on three sides of the second connecting portion, secure the transverse sleeve to the connecting sleeve from multiple directions, forming a more stable triangular or nearly triangular connection structure. When the gate guardrail is subjected to external forces such as vehicle collisions, this multi-angle connection method can more evenly and effectively disperse stress, avoiding loosening or failure of the connection due to localized force concentration. This significantly improves the stability of the connection between the transverse sleeve and the connecting sleeve, thereby enhancing the structural strength and reliability of the entire gate guardrail and effectively resisting external impacts. In addition, because the three third connection holes constrain the transverse sleeve from different sides, when the transverse sleeve is subjected to external forces, the connection holes work together to better limit the deformation tendency of the transverse sleeve. Whether affected by lateral impact forces or vibrations generated by long-term use, the multi-angle connection structure can ensure that the transverse sleeve maintains a stable shape and position, reducing the possibility of deformation, ensuring that the gate guardrail maintains good protective performance under various operating conditions and extending its service life.

[0046] Furthermore, the first connection hole 311 is in the shape of an elongated strip and extends in the horizontal direction, the second connection hole 111 is in the shape of an elongated strip and its extension direction is perpendicular to the extension direction of the first connection hole 311, the third connection hole 321 is in the shape of an elongated strip and extends in the horizontal direction, and the fourth connection hole 211 is in the shape of an elongated strip and its extension direction is perpendicular to the extension direction of the third connection hole 321.

[0047] In the present invention, the first connecting hole is in the shape of an elongated strip and extends in the horizontal direction, and the second connecting hole is also in the shape of an elongated strip, but its extension direction is perpendicular to the first connecting hole. Such a design allows for a certain amount of adjustment space in both the horizontal and vertical directions when connecting the longitudinal sleeve and the first connecting portion of the connecting sleeve.

[0048] Before installing the guardrail posts, it is necessary to design and produce U-shaped sleeves according to the size of the median strip of the highway. However, during the construction process, the U-shaped sleeve is an integrated structure, resulting in a small assembly gap between it and the guardrail post, and very high requirements for the installation accuracy of the guardrail post. However, during the construction process, manual drilling of the guardrail post mounting holes and installation of the guardrail posts are carried out. Especially during highway construction, it is impossible to effectively control errors such as the spacing between the two guardrail posts, the verticality of the guardrail posts, and the parallelism between the two guardrail posts. Due to the designed inclination of the road surface, when the errors such as the spacing, verticality and parallelism of the two guardrail posts are large, the U-shaped sleeve cannot be effectively assembled and connected with the guardrail post, and the actual construction is extremely difficult.

[0049] Therefore, the design of the first connecting hole being an elongated strip extending in the horizontal direction and the second connecting hole being an elongated strip extending in the vertical direction can allow the staff to fine-tune the relative position of the longitudinal sleeve and the connecting pipe sleeve within a certain range. Specifically, when the installation of the guardrail post is tilted, the first connecting hole being an elongated strip extending in the horizontal direction can overcome the horizontal error caused by the tilt of the guardrail post in the horizontal direction, so that the first connecting hole and the second connecting hole can still be passed through by the fastener, thereby realizing the assembly connection between the connecting pipe sleeve and the longitudinal sleeve, avoiding the problem of the connecting pipe sleeve and the longitudinal sleeve being unable to be connected due to construction errors, reducing the requirements and difficulty for construction accuracy, and effectively improving the installation convenience and reliability of the gate-type guardrail. Similarly, when there is a height error in the installation of the two guardrail posts, the second connecting hole being an elongated strip extending in the vertical direction can overcome the height error of the two guardrail posts in the vertical direction, so that the fastener can still pass through the first connecting hole and the second connecting hole, thereby realizing the connection between the connecting pipe sleeve and the first connecting part, effectively reducing the installation accuracy requirements of the gate-type guardrail.

[0050] Furthermore, the design of the third connecting hole in the form of an elongated strip extending in the horizontal direction can allow staff to fine-tune the relative position of the transverse sleeve and the connecting pipe sleeve within a certain range. When there is an error in the spacing between the two guardrail posts, the third connecting hole in the form of an elongated strip extending in the horizontal direction can overcome the spacing error between the two guardrail posts by adjusting the relative position between the two in the horizontal direction, so that the fastener can still pass through the third connecting hole and the fourth connecting hole when the spacing between the two guardrail posts is smaller or larger, thereby realizing the connection between the connecting pipe sleeve and the second connecting part, reducing the installation accuracy requirements and difficulty of the gate-type guardrail, and effectively improving the convenience and practicality of installation. Specifically, during the installation of the transverse sleeve, construction personnel can use the elongated and mutually perpendicular connecting holes to flexibly adjust the relative position of the transverse sleeve and the connecting pipe sleeve in the horizontal and vertical directions according to the actual installation situation, so that the fastener can pass through the corresponding connecting hole to realize the connection between the two components, thereby improving the convenience and flexibility of installation, reducing the requirements for the drilling accuracy of the guardrail posts, and effectively reducing the difficulty of construction.

[0051] In addition, when the gate-type guardrail is subjected to a lateral impact force, the mutually perpendicular long connecting holes can transfer the impact force on the lateral sleeve more evenly to the connecting pipe sleeve and the entire U-shaped sleeve structure. By reasonably dispersing the stress, the connection between the lateral sleeve and the connecting pipe sleeve is avoided from being damaged due to excessive local force, thereby enhancing the lateral protection performance of the gate-type guardrail and improving its ability to resist lateral vehicle impact.

[0052] In addition, when the gate-type guardrail is subjected to external force, these mutually perpendicular long strip-shaped connecting holes can make the stress transfer between the longitudinal sleeve and the connecting pipe sleeve more evenly. Compared with ordinary circular connecting holes, it avoids excessive concentration of stress in a certain direction, so that the connection part can more reasonably withstand and disperse external force, enhance the fatigue resistance and structural stability of the connection part, and effectively extend the service life of the U-shaped sleeve and the safety and reliability of the gate-type guardrail.

[0053] Furthermore, the connecting sleeve 3 is provided with an arc-shaped connecting portion 33 connecting the first connecting portion 31 and the second connecting portion 32 , and the extending direction of the first connecting portion 31 and the extending direction of the second connecting portion 32 are perpendicular to each other.

[0054] In the present invention, the connecting pipe sleeve is provided with an arc-shaped connecting portion connecting the first connecting portion and the second connecting portion, wherein the extension directions of the first connecting portion and the second connecting portion are perpendicular to each other, and the arc-shaped connecting portion connects the first connecting portion and the second connecting portion with a smooth arc, so that the overall structure of the connecting pipe sleeve is smoother and more natural. In addition, when a vehicle hits the door-type guardrail, the arc-shaped connecting portion can change the stress transmission path, so that the stress gradually diffuses along the arc direction, avoiding stress concentration at the corners of the connecting pipe sleeve. This smooth transition design effectively reduces the risk of damage to the connecting pipe sleeve caused by stress concentration, so that the connecting pipe sleeve can disperse stress more evenly when subjected to force, thereby improving its structural strength and durability, and ensuring the stability and reliability of the overall structure of the door-type guardrail.

[0055] Furthermore, as a preferred embodiment of the present invention but not a limitation, the connecting pipe sleeve is integrally formed by a stretching process, which means that the first connecting part, the second connecting part and the arc-shaped connecting part are all integrally formed by a stretching process. There are no splicing gaps and welds between the first connecting part and the arc-shaped connecting part, and between the arc-shaped connecting part and the second connecting part, thereby avoiding the problems of stress concentration and weak structure caused by splicing or welding. The structure of the connecting pipe sleeve is more continuous and complete, and when subjected to external forces such as vehicle collisions, it can transfer and disperse stress more evenly, thereby enhancing the strength and stability of the connection part of the gate-type guardrail, and improving the impact resistance and reliability of the entire gate-type guardrail.

[0056] Furthermore, a first extension portion connected to the first connecting portion 31 and the second connecting portion 32 is provided on the inner side of the corner of the connecting sleeve 3 .

[0057] In the present invention, a first extension portion connected to the first connection portion and the second connection portion is provided on the inner side of the corner of the connecting pipe sleeve. The first extension portion extends out from the inner side of the corner, increasing the structural thickness and connection area of ​​the connecting pipe sleeve at the corner, thereby strengthening the structural strength of the corner. Specifically, when the door-type guardrail is subjected to external force impact, the corner is often a key part where stress is concentrated, which is prone to transverse deformation or damage. The corner of the connecting pipe sleeve is increased in structural thickness and connection area by adding the first extension portion, which can effectively disperse the stress at the corner, improve the ability of the connecting pipe sleeve to resist external force deformation and damage, and ensure the integrity and stability of the overall structure of the U-shaped sleeve.

[0058] Furthermore, the cross-section of the transverse sleeve 2 is U-shaped, the opening of the transverse sleeve 2 faces downward, and a reinforcing rib 22 extending along the length direction of the transverse sleeve 2 is provided on the inner side of the transverse sleeve 2 .

[0059] In the present invention, the cross-sectional shape of the transverse sleeve is designed to be U-shaped, and the opening is downward. On the inner side of the transverse sleeve, there are reinforcing ribs extending along its length direction. The U-shaped cross-sectional structure provides a basic load-bearing frame for the transverse sleeve. Since the U-shaped cross-section has good structural strength and load-bearing capacity, it can resist deformation caused by external forces to a certain extent. The reinforcing ribs extending along the length direction on the inner side further enhance the structural strength and rigidity of the transverse sleeve, so that it can better maintain its shape and structural integrity when subjected to external forces such as vehicle impact force, effectively resist bending and deformation, and improve the stability and load-bearing capacity of the entire U-shaped sleeve and gate-type guardrail. In addition, the design of the transverse sleeve opening facing downward makes it difficult for debris such as leaves, garbage, and rainwater to accumulate in the transverse sleeve. In the use environment of the highway, the accumulation of debris can easily cause damage such as corrosion to the transverse sleeve, increasing maintenance cost and frequency. Therefore, the design of the transverse sleeve opening facing downward can effectively avoid the problem of debris accumulation, reduce the risk of damage caused by debris, reduce maintenance workload and cost, and extend the service life of the transverse sleeve and gate-type guardrail.

[0060] Furthermore, the cross-sectional shape of the connecting sleeve 3 is U-shaped, and the mounting cavity 34 includes a first mounting cavity 341 located at the first connecting portion 31 and a second mounting cavity 342 located at the second connecting portion 32. The depth of the first mounting cavity 341 is greater than or equal to the cross-sectional diameter of the first mounting portion 11, and the depth of the second mounting cavity 342 is greater than or equal to the maximum cross-sectional length of the second mounting portion 21.

[0061] In the present invention, the cross-sectional shape of the connecting pipe sleeve is also U-shaped, and is provided with a mounting cavity specifically for embedding the longitudinal sleeve and the transverse sleeve, the mounting cavity comprising a first mounting cavity located at the first connecting portion and a second mounting cavity located at the second connecting portion, wherein the depth of the first mounting cavity is designed to be greater than or equal to the cross-sectional diameter of the first mounting portion, and the depth of the second mounting cavity is greater than or equal to the maximum cross-sectional strength of the second mounting portion, to ensure that the first mounting portion and the second mounting portion can be firmly embedded in the mounting cavity. In summary, the mounting cavity with a U-shaped cross-sectional area provides a precise mounting and positioning structure for the longitudinal sleeve and the transverse sleeve. During the installation process, the construction personnel can accurately embed the longitudinal sleeve and the transverse sleeve into the corresponding In the installation cavity, the depth design of the first installation cavity and the second installation cavity ensures the tightness and stability of the embedding, reduces the installation error, enables the components to fit closely together, forms a stable and reliable overall structure, and effectively improves the installation quality and stability of the gate-type guardrail. In addition, the installation cavity makes the longitudinal sleeve, the transverse sleeve and the connecting pipe sleeve fit tightly, increases the contact area between the components, and when the gate-type guardrail is subjected to external force, this confidential connection method can more effectively transmit and disperse stress, avoid damage to the connection part due to uneven force, and enhance the reliability and durability of the U-shaped sleeve by optimizing the stress distribution, thereby improving the protective performance and service life of the gate-type guardrail during long-term use.

[0062] The gate-type guardrail comprises the U-shaped sleeve and guardrail plates 4 arranged on both sides of the U-shaped sleeve.

[0063] In the present invention, the gate-type guardrail adopts the U-shaped sleeve described above, so that the installation of the gate-type guardrail can be achieved on one side, reducing traffic interference, and the design of the long strip connecting hole reduces the requirements of the gate-type guardrail on assembly accuracy, thereby improving the convenience of installing the gate-type guardrail.

[0064] Furthermore, the guardrail plate 4 includes a first guardrail plate 41 connected to the connecting pipe sleeve 3 and a second guardrail plate 42 connected to the longitudinal sleeve 1. The first guardrail plate 41 is located on the upper side of the second guardrail plate 42 and the thickness of the second guardrail plate 42 is greater than the thickness of the first guardrail plate 41. The cross-sectional shape of the guardrail plate 4 is corrugated.

[0065] In the present invention, the guardrail plate is divided into a first guardrail plate connected to the connecting pipe sleeve and a second guardrail plate connected to the longitudinal sleeve, wherein the first guardrail plate is located on the upper side of the second guardrail plate, and the thickness of the second guardrail plate is greater than that of the first guardrail plate. Since the impact force on the lower part is usually greater when a vehicle collides with a gate-type guardrail, the thicker design of the second guardrail plate enables it to better withstand the greater impact force on the lower part, effectively absorb and disperse the impact energy of the lower part, and prevent the lower part of the vehicle from breaking through the guardrail, while the impact force on the upper part is relatively smaller than that on the lower part. According to the force difference of different parts of the guardrail plate, different thicknesses are designed. On the premise of ensuring the protective performance of the gate-type guardrail, thicker materials are used for the lower second guardrail plate that is subjected to greater force, and thinner materials are used for the upper first guardrail plate that is subjected to relatively less force, thereby avoiding unnecessary material waste and effectively controlling production costs.

[0066] Furthermore, the cross-sectional shape of the guardrail is corrugated. When a vehicle collides with a gate-type guardrail, the corrugated guardrail can utilize its own corrugated structure to produce a large degree of deformation. During the deformation process, the guardrail absorbs a large amount of vehicle kinetic energy, effectively cushions the impact force of the vehicle, reduces the vehicle's driving speed, and reduces the degree of damage to the vehicle caused by the collision. At the same time, it can also significantly reduce the damage to the driver and passengers. By efficiently absorbing the impact energy, it effectively prevents vehicles from crossing the isolation belt and entering the opposite lane, greatly improving the protection capability of the gate-type guardrail against vehicles on two-way highways. In addition, compared with traditional flat guardrails, the corrugated design makes the appearance of the gate-type guardrail more beautiful and layered. At the same time, when the vehicle is driving at high speed, the corrugated guardrail can optimize air flow, reduce air resistance and turbulence, reduce the force of wind on the gate-type guardrail, reduce vibration and wear caused by wind load, help to extend the service life of the gate-type guardrail, and improve its stability in high-speed airflow environments.

[0067] Furthermore, the first guardrail plate 41 is provided with a fifth connecting hole 411, the connecting pipe sleeve 3 is provided with a sixth connecting hole 35 on the side close to the guardrail plate 4, and the longitudinal sleeve 1 is provided with a seventh connecting hole 12 running through both sides thereof, and the fastener passes through the fifth connecting hole 411, the sixth connecting hole 35 and the seventh connecting hole 12, so that the first guardrail plate 41 is firmly connected to the connecting pipe sleeve 3 and the longitudinal sleeve 1. Similarly, the second guardrail plate 42 is provided with an eighth connecting hole 421, and the longitudinal sleeve 1 is provided with a ninth connecting hole 13 running through both sides thereof, and the fastener passes through the eighth connecting hole 421 and the ninth connecting hole 13 to firmly connect the second guardrail plate 42 to the longitudinal sleeve 1.

[0068] Specifically, the fifth connection hole 411, the sixth connection hole 35, the seventh connection hole 12, the eighth connection hole 421 and the ninth connection hole 13 are all arranged in a long strip shape, wherein the fifth connection hole 411, the seventh connection hole 12 and the eighth connection hole 421 extend in the horizontal direction, while the sixth connection hole 35 and the ninth connection hole 13 extend in the vertical direction. Such a design means that the length direction of the fifth connection hole 411 and the length direction of the sixth connection hole 35 are perpendicular to each other, and the length direction of the eighth connection hole 421 and the length direction of the ninth connection hole 13 are perpendicular to each other.

[0069] Since the fifth connecting hole 411 and the seventh connecting hole 12 are both long and arranged in the horizontal direction, the relative position of the first guardrail plate 41 and the U-shaped sleeve can be fine-tuned in the horizontal direction when connected, so that the fastener can pass through the fifth connecting hole 411 and the seventh connecting hole 12 to realize the connection between the first guardrail plate 41 and the U-shaped sleeve, avoiding the problem of misalignment of the connecting holes due to differences in processing dimensions, and reducing the construction difficulty of the gate-type guardrail. Similarly, the eighth connecting hole 421 is arranged in the horizontal direction and the ninth connecting hole 13 is arranged in the vertical direction. The second guardrail plate 42 and the U-shaped sleeve can be fine-tuned in the vertical and horizontal directions relative to each other, which also avoids the problem of misalignment of the connecting holes due to processing dimensions, and effectively reduces the assembly accuracy requirements and construction difficulty of the gate-type guardrail.

[0070] Example 1 A U-shaped sleeve for a gate-type guardrail comprises a longitudinal sleeve 1 for connecting a guardrail column, a transverse sleeve 2, and a connecting pipe sleeve 3 connecting the longitudinal sleeve 1 and the transverse sleeve 2. Two longitudinal sleeves 1 and two connecting pipe sleeves 3 are provided. The transverse sleeve 2 and the two longitudinal sleeves 1 are connected through the two connecting pipe sleeves 3 to form a U-shaped sleeve. The connecting pipe sleeve 3 is provided with an installation cavity 34 for embedding the longitudinal sleeve 1 and the transverse sleeve 2.

[0071] Example 2 Example 2 is based on Example 1 and further has the following implementation methods: The connecting sleeve 3 is provided with a first connecting portion 31 and a second connecting portion 32 , the longitudinal sleeve 1 is provided with a first mounting portion 11 that cooperates with the first connecting portion 31 , and the transverse sleeve 2 is provided with a second mounting portion 21 that cooperates with the second connecting portion 32 .

[0072] Example 3 Example 3, based on Example 2, further has the following implementation methods: The first connecting portion 31 is provided with a first connecting hole 311, the first mounting portion 11 is provided with a second connecting hole 111 corresponding to the first connecting hole 311, the second connecting portion 32 is provided with a third connecting hole 321, and the second mounting portion 21 is provided with a fourth connecting hole 211 corresponding to the third connecting hole 321. The first connecting hole 311 and the second connecting hole 111, and the third connecting hole 321 and the fourth connecting hole 211 are all connected by fasteners.

[0073] Example 4 Example 4 is based on Example 3 and further has the following implementation methods: The first connection hole 311 is in the shape of an elongated strip and extends in the horizontal direction, the second connection hole 111 is in the shape of an elongated strip and extends in the vertical direction, the third connection hole 321 is in the shape of an elongated strip and extends in the horizontal direction, and the fourth connection hole 211 is in the shape of an elongated strip and its extension direction is perpendicular to the extension direction of the third connection hole 321.

[0074] Example 5 Example 5 is based on Example 2 and further has the following implementation methods: The connecting sleeve 3 is provided with an arc-shaped connecting portion 33 connecting the first connecting portion 31 and the second connecting portion 32 . The extending direction of the first connecting portion 31 and the extending direction of the second connecting portion 32 are perpendicular to each other.

[0075] Example 6 Example 6, based on Example 2, further has the following implementation methods: A first extending portion 35 connected to the first connecting portion 31 and the second connecting portion 32 is provided at the inner side of the corner of the connecting sleeve 3 .

[0076] Example 7 Example 7, based on Example 2, further has the following implementation methods: The cross-section of the transverse sleeve 2 is U-shaped, the opening of the transverse sleeve 2 faces downward, and a reinforcing rib 22 extending along the length direction of the transverse sleeve 2 is provided on the inner side of the transverse sleeve 2 .

[0077] Example 8 Example 8, based on Example 2, further has the following implementation methods: The cross-sectional shape of the connecting sleeve 3 is U-shaped, and the mounting cavity 34 includes a first mounting cavity 341 located at the first connecting portion 31 and a second mounting cavity 342 located at the second connecting portion 32. The depth of the first mounting cavity 341 is greater than the cross-sectional diameter of the first mounting portion 11, and the depth of the second mounting cavity 342 is greater than the maximum cross-sectional length of the second mounting portion 21.

[0078] Example 9 The gate-type guardrail comprises the U-shaped sleeve and guardrail plates 4 arranged on both sides of the U-shaped sleeve.

[0079] Example 10 Example 10, based on Example 9, further has the following implementation methods: The guardrail plate 4 includes a first guardrail plate 41 connected to the connecting pipe sleeve 3 and a second guardrail plate 42 connected to the longitudinal sleeve 1. The first guardrail plate 41 is located on the upper side of the second guardrail plate 42 and the thickness of the second guardrail plate 42 is greater than the thickness of the first guardrail plate 41. The cross-sectional shape of the guardrail plate 4 is corrugated.

[0080] Example 11 Example 11, based on Example 2, further has the following implementation methods: The number of the first connection holes is two groups, and the number of the first connection holes in each group is two and they are distributed in a vertical direction.

[0081] Example 12 Example 12 is based on Example 2 and further has the following implementation methods: The number of the third connection holes is three and they are respectively arranged on three sides of the second connection portion.

[0082] Example 13 Example 13, based on Example 8, further has the following implementation methods: The first guardrail plate 41 is provided with a fifth connecting hole 411, the connecting pipe sleeve 3 is provided with a sixth connecting hole 35 on the side close to the guardrail plate 4, the longitudinal sleeve 1 is provided with a seventh connecting hole 12 running through both sides thereof, and the fastener passes through the fifth connecting hole 411, the sixth connecting hole 35 and the seventh connecting hole 12, so that the first guardrail plate 41 is firmly connected to the connecting pipe sleeve 3 and the longitudinal sleeve 1, the second guardrail plate 42 is provided with an eighth connecting hole 421, and the longitudinal sleeve 1 is provided with a ninth connecting hole 13 running through both sides thereof, and the fastener passes through the eighth connecting hole 421 and the ninth connecting hole 13 to firmly connect the second guardrail plate 42 to the longitudinal sleeve 1.

[0083] Example 14 Example 14, based on Example 10, further has the following implementation methods: The thickness of the first guardrail plate 41 is 3 mm, and the thickness of the second guardrail plate 42 is 4 mm.

[0084] Example 15 The difference between Example 15 and Example 8 is that the depth of the first mounting cavity 341 is equal to the cross-sectional diameter of the first mounting portion 11 , and the depth of the second mounting cavity 342 is equal to the maximum cross-sectional length of the second mounting portion 21 .

[0085] Example 16 Example 16, based on Example 2, further has the following implementation methods: The first mounting portion and the first connecting portion, as well as the second mounting portion and the second connecting portion are connected and fixed by welding.

[0086] Example 17 Example 17, based on Example 2, further has the following implementation methods: The first mounting portion and the first connecting portion, as well as the second mounting portion and the second connecting portion are connected and fixed by means of threaded connections.

[0087] The above examples are merely provided to further illustrate the technical content of the present invention for easier understanding by the reader, but do not limit the embodiments of the present invention to these examples. Any extension or re-creation of the technology based on the present invention is protected by the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. A U-shaped sleeve for a door-type guardrail, characterized in that: The invention comprises a longitudinal sleeve (1) for connecting a guardrail column, a transverse sleeve (2), and a connecting sleeve (3) connecting the longitudinal sleeve (1) and the transverse sleeve (2), wherein two longitudinal sleeves (1) and two connecting sleeves (3) are provided, the transverse sleeve (2) and the two longitudinal sleeves (1) are connected via the two connecting sleeves (3) to form a U-shaped sleeve, and the connecting sleeve (3) is provided with an installation cavity (34) for embedding the longitudinal sleeve (1) and the transverse sleeve (2).

2. The U-shaped sleeve for door-type guardrail according to claim 1, characterized in that: The connecting sleeve (3) is provided with a first connecting portion (31) and a second connecting portion (32); the longitudinal sleeve (1) is provided with a first mounting portion (11) that is connected to the first connecting portion (31); and the transverse sleeve (2) is provided with a second mounting portion (21) that is connected to the second connecting portion (32).

3. The U-shaped sleeve for door-type guardrail according to claim 2, characterized in that: The first connecting portion (31) is provided with a first connecting hole (311), the first mounting portion (11) is provided with a second connecting hole (111) corresponding to the first connecting hole (311), the second connecting portion (32) is provided with a third connecting hole (321), and the second mounting portion (21) is provided with a fourth connecting hole (211) corresponding to the third connecting hole (321), and the first connecting hole (311) and the second connecting hole (111), as well as the third connecting hole (321) and the fourth connecting hole (211), are connected via fasteners.

4. The U-shaped sleeve for door-type guardrail according to claim 3, characterized in that: The first connection hole (311) is in the shape of an elongated strip and extends in the horizontal direction, the second connection hole (111) is in the shape of an elongated strip and extends in the vertical direction, the third connection hole (321) is in the shape of an elongated strip and extends in the horizontal direction, and the fourth connection hole (211) is in the shape of an elongated strip and its extension direction is perpendicular to the extension direction of the third connection hole (321).

5. The U-shaped sleeve for door-type guardrail according to claim 2, characterized in that: The connecting sleeve (3) is provided with an arc-shaped connecting portion (33) connecting the first connecting portion (31) and the second connecting portion (32), and the extending direction of the first connecting portion (31) and the extending direction of the second connecting portion (32) are perpendicular to each other.

6. The U-shaped sleeve for door-type guardrail according to claim 2, characterized in that: A first extension portion (35) connected to the first connecting portion (31) and the second connecting portion (32) is provided on the inner side of the corner of the connecting sleeve (3).

7. The U-shaped sleeve for door-type guardrail according to claim 2, characterized in that: The cross-section of the transverse sleeve (2) is U-shaped, the opening of the transverse sleeve (2) faces downward, and a reinforcing rib (22) extending along the length direction of the transverse sleeve (2) is provided on the inner side of the transverse sleeve (2).

8. The U-shaped sleeve for door-type guardrail according to claim 2, characterized in that: The cross-section of the connecting sleeve (3) is U-shaped, and the mounting cavity (34) comprises a first mounting cavity (341) located at the first connecting portion (31) and a second mounting cavity (342) located at the second connecting portion (32). The depth of the first mounting cavity (341) is greater than or equal to the cross-sectional diameter of the first mounting portion (11), and the depth of the second mounting cavity (342) is greater than or equal to the maximum cross-sectional length of the second mounting portion (21).

9. Door type guardrail, characterized in that, It comprises the U-shaped sleeve according to any one of claims 1 to 8, and guardrail plates (4) arranged on both sides of the U-shaped sleeve.

10. The gate-type guardrail according to claim 9, characterized in that: The guardrail plate (4) comprises a first guardrail plate (41) connected to the connecting pipe sleeve (3) and a second guardrail plate (42) connected to the longitudinal sleeve (1); the first guardrail plate (41) is located on the upper side of the second guardrail plate (42) and the thickness of the second guardrail plate (42) is greater than the thickness of the first guardrail plate (41); and the cross-sectional shape of the guardrail plate (4) is corrugated.

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