CN222083415U - Adjustable wing-free wall transition guardrail - Google Patents
Adjustable wing-free wall transition guardrail Download PDFInfo
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- CN222083415U CN222083415U CN202420745938.5U CN202420745938U CN222083415U CN 222083415 U CN222083415 U CN 222083415U CN 202420745938 U CN202420745938 U CN 202420745938U CN 222083415 U CN222083415 U CN 222083415U
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Abstract
本申请涉及一种可调式免翼墙过渡护栏，其涉及公路护栏技术领域，其包括三波板和立柱，所述三波板一端通过角度调整装置与混凝土护栏连接，所述角度调整装置用于使所述三波板能够与具有不同表面坡度的混凝土护栏连接，所述三波板另一端通过三波‑双波连接板与公路护栏连接，所述立柱与所述三波板连接。本申请具有提高三波板与混凝土护栏连接的紧密性的效果。
The present application relates to an adjustable wing-wall-free transition guardrail, which relates to the technical field of highway guardrails, and comprises a three-wave plate and a column, wherein one end of the three-wave plate is connected to a concrete guardrail through an angle adjustment device, and the angle adjustment device is used to enable the three-wave plate to be connected to concrete guardrails with different surface slopes, and the other end of the three-wave plate is connected to a highway guardrail through a three-wave-double-wave connecting plate, and the column is connected to the three-wave plate. The present application has the effect of improving the tightness of the connection between the three-wave plate and the concrete guardrail.
Description
Technical Field
The application relates to the technical field of highway guardrails, in particular to an adjustable wing-free wall transition guardrail.
Background
At present, most of the concrete guardrails are connected with the conventional guardrails through wing walls, one end of each wing wall is fixed with the concrete guardrails, the other end of each wing wall is fixed with the conventional guardrails, and the casting mode of each wing wall is cast-in-situ.
Because the construction period of the wing wall cast in situ is longer, and the maintenance of the cast-in-situ wing wall is influenced by weather, the maintenance effect of the wing wall can be possibly influenced when the cast-in-situ wing wall encounters severe weather, so that the structural strength of the wing wall can not be ensured, and the existing multi-purpose adjustable wing-free wall transition guardrail is replaced.
The wing wall transition guardrail exempts from with adjustable it is current, is fixed three ripples boards on concrete guardrail usually through the transition guardrail, because concrete guardrail's structural style probably is different, when concrete guardrail's joint surface has certain slope relative to ground, because three ripples boards need perpendicular ground installation, lead to the connection between transition guardrail and the concrete guardrail not inseparable enough to make the bolt of connecting three ripples boards and concrete guardrail fracture easily, influence three ripples boards and concrete guardrail's joint strength relatively poor.
Disclosure of utility model
In order to improve the connection tightness of the three-wave plate and the concrete guardrail, the application provides an adjustable wing-free wall transition guardrail.
The application provides an adjustable wing-free wall transition guardrail which adopts the following technical scheme:
The utility model provides a wing wall transition guardrail exempts from with adjustable, includes three ripples boards and stand, three ripples boards are connected with the concrete guardrail through angle adjustment device, angle adjustment device is used for making three ripples boards can be connected with the concrete guardrail that has different surface gradients, three ripples board other end is connected with highway guardrail through three ripples-duplex wave connecting plate, the stand with three ripples boards are connected.
Through adopting above-mentioned technical scheme, when the concrete guardrail that has different surface gradients needs to be connected, through angle adjustment device with three ripples board and concrete guardrail zonulae occludens, avoid setting up perpendicularly because of three ripples board needs, when meeting the face of bumping at the concrete guardrail with three ripples board through bolt lug connection, three ripples board can't closely laminate on the concrete guardrail, influences the joint strength between the two to influence the protection effect of three ripples boards.
In a specific implementation manner, the angle adjusting device comprises a first connecting plate, a hinging block and a second connecting plate, wherein the first connecting plate is fixedly connected to the three-wave plate, the second connecting plate is fixedly connected to the collision face of the concrete guardrail, one end of the hinging block is hinged to the second connecting plate, and the other end of the hinging block is hinged to the second connecting plate.
Through adopting above-mentioned technical scheme, articulated slab both ends articulate respectively on first connecting plate and second connecting plate, when concrete guardrail collided the face and have different slopes, rotate articulated slab relative first connecting plate and second connecting plate, until suitable and angle, with the stable fixing of three ripples boards on concrete guardrail to three ripples boards can adapt to different structural style's concrete guardrail.
In a specific implementation manner, the concrete guardrail further comprises a transition guardrail and a third connecting plate, one end of the transition guardrail is fixedly connected to the outer surface part of the three-wave plate, which is adjacent to one end of the concrete guardrail, one end part of the connecting plate is bent, one bent end of the third connecting plate is fixed to the three-wave plate, and the other end of the third connecting plate is fixedly connected to the concrete guardrail.
Through adopting above-mentioned technical scheme, be connected three ripples boards adjacent concrete guardrail one end and concrete guardrail through transition guardrail and third connecting plate, further improve three ripples boards and concrete guardrail's joint strength, the sharp-pointed end that three ripples boards are adjacent concrete guardrail can be lived to the parcel simultaneously to the transition guardrail, avoids vehicle and pedestrian to cut and scratch three ripples boards tip, causes personnel on hand or vehicle wearing and tearing.
In a specific implementation manner, a third connecting plate kidney-shaped hole is formed in the bending part of the connecting plate, a transition guardrail kidney-shaped hole is formed in the transition guardrail corresponding to the third connecting plate kidney-shaped hole, the transition guardrail is connected with the connecting plate through bolts penetrating through the third connecting plate kidney-shaped hole and the transition guardrail kidney-shaped hole, and one end of the connecting plate which is not bent is fixed on the concrete guardrail.
Through adopting above-mentioned technical scheme, the bolt passes the different positions in third connecting plate waist shape hole and transition guardrail waist shape hole, connects third connecting plate and transition guardrail to can adjust the third connecting plate and stretch out the distance, with the not unidimensional concrete guardrail of adaptation, guarantee the joint strength of three ripples boards and concrete guardrail.
In a specific embodiment, the transition guardrail is provided with a claw, and the claw is abutted in the wave groove of the three-wave plate.
Through adopting above-mentioned technical scheme, the jack catch joint is in the groove of dialling of three ripples boards, when avoiding three ripples boards to receive the ascending power of vertical, three ripples boards are in the relative transition guardrail removal of vertical orientation to destroy the relation of connection between the two.
In a specific embodiment, the columns are provided in a plurality, and the columns are connected at different positions of the tri-wave plate.
By adopting the technical scheme, the three-wave plate is supported by the plurality of upright posts, so that the anti-collision capability of the three-wave plate is improved.
In a specific implementation manner, the concrete pavement structure further comprises a friction beam, one end of the friction beam is bent, one end of the friction beam, which is not bent, is fixed on the concrete guardrail, the friction beam is connected with a plurality of upright posts, and one bent end of the friction beam is installed on the end face, away from the concrete guardrail, of the upright posts, and is located on the end face, away from a highway, of the upright posts.
Through adopting above-mentioned technical scheme, through the setting of friction beam, promoted the protective capacities of transition guardrail, can prevent the passenger train stumbling effectively.
In a specific implementation manner, the concrete guardrail further comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is fixedly connected to the upper end face of the concrete guardrail, a first kidney-shaped hole is formed in the first connecting piece along the vertical direction, a second kidney-shaped hole is formed in the second connecting piece corresponding to the first kidney-shaped hole, the first kidney-shaped hole and the second kidney-shaped hole are formed in the second connecting piece in a penetrating mode through bolts, so that the first connecting piece and the second connecting piece are connected, a third kidney-shaped hole is formed in the second connecting piece, and the third kidney-shaped hole is formed in the second connecting piece in a penetrating mode through bolts and is fixed to the three-wave plate, so that the three-wave plate is connected with the second connecting piece.
Through adopting above-mentioned technical scheme, be connected three ripples boards and concrete up end position through first connecting piece and second connecting piece, can further improve the joint strength between the two, improve three ripples board's guard strength, the bolt passes the different positions in first waist shape hole and second waist shape hole, connects first connecting piece and second connecting piece, can adjust the fixed position of first connecting piece from top to bottom to adapt to not unidimensional concrete guardrail, improve the application scope of first connecting piece and second connecting piece.
In a specific embodiment, a plurality of positioning holes are formed in the second connecting piece parts on the upper side and the lower side of the second kidney-shaped hole along the horizontal direction, and the first connecting piece and the second connecting piece can be connected by penetrating through the first kidney-shaped hole and different positioning holes through bolts.
Through adopting above-mentioned technical scheme, the bolt passes first kidney-shaped hole and different locating holes, connects first connecting piece and second connecting piece, can adjust the position of second connecting piece relative first connecting piece from beginning to end to adapt to not unidimensional concrete guardrail, further improves the application scope of first connecting piece and second connecting piece.
In a specific implementation mode, a first rib plate is welded on the first connecting piece, and a plurality of second rib plates are welded on the second connecting piece along the vertical direction.
Through adopting above-mentioned technical scheme, first gusset strengthens the intensity of first connecting piece, and second gusset strengthens the intensity of second connecting piece, avoids when connecting three ripples boards and concrete up end position through first connecting piece and second connecting piece, and first connecting piece and second connecting piece produce deformation, influence both normal use.
In summary, the present application includes at least one of the following beneficial technical effects:
1. When the concrete guardrails with different surface gradients are required to be connected, the three-wave plate is tightly connected with the concrete guardrails through the angle adjusting device, so that the situation that the three-wave plate is required to be vertically arranged and directly connected with the collision surface of the concrete guardrails through bolts is avoided, the three-wave plate cannot be tightly attached to the concrete guardrails, the connection strength between the three-wave plate and the concrete guardrails is affected, and the protection effect of the three-wave plate is affected;
2. two ends of the hinged plate are respectively hinged to the first connecting plate and the second connecting plate, when the collision face of the concrete guardrail has different slopes, the hinged plate is rotated relative to the first connecting plate and the second connecting plate until the angle is proper, and the three-wave plate is stably fixed on the concrete guardrail, so that the three-wave plate can adapt to the concrete guardrails with different structural forms;
3. The three-wave plate is connected with the upper end face of the concrete through the first connecting piece and the second connecting piece, the connection strength between the three-wave plate and the upper end face of the concrete can be further improved, the protection strength of the three-wave plate is improved, the bolts penetrate through different positions of the first kidney-shaped hole and the second kidney-shaped hole, the first connecting piece and the second connecting piece are connected, the fixing positions of the first connecting piece can be adjusted up and down, so that the concrete guardrail with different sizes is adapted, and the application range of the first connecting piece and the second connecting piece is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is a front view of an embodiment of the present application.
Fig. 3 is a broken cross-sectional view taken along A-A in fig. 2.
Fig. 4 is a schematic structural view of a transition guardrail and a third connecting plate according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of the first connecting member and the second connecting member according to an embodiment of the present application.
The reference numerals are 1, three wave plates, 2, upright posts, 3, an angle adjusting device, 31, a first connecting plate, 32, a hinging block, 33, a second connecting plate, 4, a concrete guardrail, 5, a highway guardrail, 6, three wave-double wave connecting plates, 7, a friction beam, 8, a transition guardrail, 81, a transition guardrail waist-shaped hole, 82, a claw, 9, a third connecting plate, 91, a third connecting plate waist-shaped hole, 10, a first connecting piece, 101, a first waist-shaped hole, 11, a second connecting piece, 111, a second waist-shaped hole, 112, a third waist-shaped hole, 113, a positioning hole, 12, a first rib plate, 13 and a second rib plate.
Detailed Description
In the description of the present application, unless explicitly stated and limited otherwise, the terms "disposed" and "connected" should be interpreted as broadly, for example, as being fixedly connected, detachably connected, or integrally connected, as being directly connected, indirectly connected through an intermediary, as being internal to two elements or as being an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In this specification, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and thus features defining "first," "second," or the like, may explicitly or implicitly include one or more of such features.
The embodiment of the application discloses an adjustable wing-free wall transition guardrail.
As shown in fig. 1 and 2, the adjustable wing-free wall transition guardrail comprises a three-wave plate 1, upright posts 2, an angle adjusting device 3, a concrete guardrail 4, a highway guardrail 5 and a three-wave-double-wave connecting plate 6, wherein one end of the three-wave plate 1 is connected with the highway guardrail 5 through the three-wave-double-wave connecting plate 6, the other end of the three-wave plate 1 is adjacent to the face part of the concrete guardrail 4 and is connected with the collision face part of the concrete guardrail 4 through the angle adjusting device 3, the upright posts 2 are provided with a plurality of upright posts, one ends of the upright posts 2 are fixed on the ground, the other ends of the upright posts 2 are fixed at different parts of the three-wave plate 1 through bolts, and the upright posts 2 are vertically arranged.
In the embodiment of the application, the bridge further comprises a friction beam 7, one end of the friction beam 7 is bent, one end of the friction beam 7, which is not bent, is fixed on the concrete guardrail 4 through an expansion bolt, one bent end of the friction beam 7 is fixedly connected on the end face, away from the highway, of the upright post 2 of the concrete guardrail 4 through a bolt, the body part of the friction beam 7 is fixedly connected with other upright posts 2 through bolts, and the protective capability of the transition guardrail 8 is improved through the arrangement of the friction beam 7, so that the blocking of a passenger car can be effectively prevented.
As shown in fig. 3, the angle adjusting device 3 includes a first connecting plate 31, a hinge block 32 and a second connecting plate 33, the first connecting plate 31 is fixedly mounted on the side surface of the triple-wave plate 1 adjacent to the concrete guardrail 4 through bolts, a plurality of second connecting plate kidney-shaped holes are formed in the second connecting plate 33, the second connecting plate 33 is vertically arranged, the second connecting plate 33 is mounted on the impact surface of the concrete guardrail 4 through expansion bolts penetrating through different parts of the kidney-shaped holes of the second connecting plate, the arrangement of the kidney-shaped holes of the second connecting plate is convenient for adjusting the mounting height of the second connecting plate 33 compared with the mounting height of the first connecting plate 31, one end of the hinge block 32 is hinged on the first connecting plate 31, and the other end of the hinge block 32 is hinged on the second connecting plate 33, so that the triple-wave plate 1 is connected with the concrete guardrail 4.
As shown in fig. 3 and 4, in the embodiment of the application, the application further comprises a transition guardrail 8 and a third connecting plate 9, one end of the transition guardrail 8 is fixed on the outer surface part of the three-wave plate 1 adjacent to one end of the concrete guardrail 4 through bolts, the outer surface refers to the side surface of the three-wave plate 1 facing away from the collision surface of the concrete guardrail 4, two parallel transition guardrail waist-shaped holes 81 in the vertical direction are arranged at the other end of the transition guardrail 8, one end part of the third connecting plate 9 is bent, two third connecting plate waist-shaped holes 91 are arranged at one bent end part of the third connecting plate 9 corresponding to the transition guardrail waist-shaped holes 81 in the horizontal direction, the bolts penetrate through the transition guardrail waist-shaped holes 81 and the third connecting plate waist-shaped holes 91 to connect the transition guardrail 8 with the third connecting plate 9, one end of the third connecting plate 9, which is not bent, is fixed on an impact surface of the concrete guardrail 4 through a plurality of expansion bolts, and passes through different parts of the waist-shaped holes 81 and 91 of the transition guardrail through adjusting bolts, so that the extending distance of the third connecting plate 9 is adjusted to adapt to the concrete guardrail 4 with different sizes, the transition guardrail 8 is respectively connected with the three-wave plate 1 and the concrete guardrail 4, two clamping claws 82 are integrally formed on the end surface of one end, connected with the three-wave plate 1, of the second connecting plate 33 along the vertical direction, and the two clamping claws 82 are respectively abutted to the inner side walls of two wave grooves of the three-wave plate 1, so that the connection strength of the three-wave plate 1 and the transition guardrail 8 is further improved.
As shown in fig. 3 and 5, in the embodiment of the present application, the concrete guardrail further comprises a first connecting member 10 and a second connecting member 11, the first connecting member 10 and the second connecting member 11 are configured as L-shaped plates with different sizes, the first connecting member 10 is smaller in size, the first connecting member 10 is fixedly connected to the upper end surface of the concrete guardrail 4 through a side plate passing through a bolt, two first kidney-shaped holes 101 are formed in the other side plate of the first connecting plate 31 along the vertical direction, a third kidney-shaped hole 112 is formed in one side plate surface of the second connecting member 11, the second connecting member 11 is fixed on the three-wave plate 1 through the third kidney-shaped holes 112 by the bolt, the position of the third kidney-shaped holes 112 can be adjusted in the vertical direction, the other side plate of the second connecting piece 11 is provided with two second kidney-shaped holes 111 corresponding to the first kidney-shaped holes 101, the upper side and the lower side of the second kidney-shaped holes 111 are symmetrically provided with a plurality of positioning holes 113 corresponding to the second kidney-shaped holes 111, bolts pass through the first kidney-shaped holes 101 arranged on the first connecting piece 10 and the second kidney-shaped holes 111 or the positioning holes 113 arranged on the second connecting piece 11 to fixedly connect the first connecting piece 10 and the second connecting piece 11, and the positions of the second connecting piece 11 in the horizontal direction and the vertical direction of the first connecting piece 10 can be adjusted by adjusting the different positions or the different positioning holes 113 passing through the second kidney-shaped holes 111 so as to adapt to concrete guardrails 4 with different sizes, and the three-wave plate 1 is tightly connected with the upper end face of the concrete guardrails 4, so that the connection strength of the three-wave plate 1 and the concrete guardrails 4 is further improved.
The first rib plate 12 is welded on the first connecting piece 10, the first rib plate 12 is used for connecting two side plates of the first connecting piece 10, the second connecting piece 11 is welded with three second rib plates 13, the second rib plates 13 are used for connecting two side plates of the second connecting piece 11, and the first rib plate 12 and the second rib plates 13 are respectively used for improving the self strength of the first connecting piece 10 and the second connecting piece 11.
The implementation principle of the adjustable wing-free wall transition guardrail is that a plate body of a three-wave plate 1 is fixedly connected to a plurality of upright posts 2, one end of the three-wave plate 1 is fixedly connected to a highway guardrail 5 through a three-wave-double-wave connecting plate 6, the other end of the three-wave plate 1 is adjacent to the side surface of the concrete guardrail 4, which is opposite to the collision surface, the three-wave plate 1 is connected with the concrete guardrail 4 through a first connecting plate 31, a second connecting plate 33 and a hinge block 32, the three-wave plate 1 can be tightly connected with the concrete guardrail 4 with different sizes, the connection strength of the three-wave plate 1 and the concrete guardrail 4 is improved, the side surface of the three-wave plate 1 adjacent to the highway side surface is connected with the side surface of the concrete guardrail 4 through a transition guardrail 8 and a third connecting plate 9, therefore the connection strength of the three-wave plate 1 and the concrete guardrail 4 is further improved, the sharp part at one end of the three-wave plate 1 is wrapped, the probability of causing injury and vehicle cut-off is reduced, the plate body of the three-wave plate 1 is connected with the upper end surface of the concrete guardrail 4 through a first connecting piece 10 and a second connecting piece 11, and the second connecting piece 11 can be adjusted to the opposite to the first connecting piece 11, and the concrete guardrail 4 is mounted with different sizes, and the three-wave plate 1 is further adapted to the concrete guardrail 4.
The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.
Claims (10)
1. The adjustable wing-free wall transition guardrail is characterized by comprising a three-wave plate (1) and an upright post (2), wherein one end of the three-wave plate (1) is connected with a concrete guardrail (4) through an angle adjusting device (3), the angle adjusting device (3) is used for enabling the three-wave plate (1) to be connected with the concrete guardrail (4) with different surface gradients, the other end of the three-wave plate (1) is connected with a highway guardrail (5) through a three-wave-double-wave connecting plate (6), and the upright post (2) is connected with the three-wave plate (1).
2. The adjustable wing-free wall transition guardrail according to claim 1, wherein the angle adjusting device (3) comprises a first connecting plate (31), a hinge block (32) and a second connecting plate (33), the first connecting plate (31) is fixedly connected to the three-wave plate (1), the second connecting plate (33) is fixedly connected to an impact surface of the concrete guardrail (4), one end of the hinge block (32) is hinged to the second connecting plate (33), and the other end of the hinge block (32) is hinged to the second connecting plate (33).
3. The adjustable wing-free wall transition guardrail according to claim 1, further comprising a transition guardrail (8) and a third connecting plate (9), wherein one end of the transition guardrail (8) is fixedly connected to the outer surface part of the three-wave plate (1) adjacent to one end of the concrete guardrail (4), one end part of the third connecting plate (9) is bent, one bent end of the third connecting plate (9) is fixed to the three-wave plate (1), and the other end of the third connecting plate (9) is fixedly connected to the concrete guardrail (4).
4. The adjustable wing-free wall transition guardrail according to claim 3, wherein a third connecting plate kidney-shaped hole (91) is formed in a bending part of the third connecting plate (9), a transition guardrail kidney-shaped hole (81) is formed in the transition guardrail (8) corresponding to the third connecting plate kidney-shaped hole (91), the transition guardrail (8) is connected with the third connecting plate (9) through bolts penetrating through the third connecting plate kidney-shaped hole (91) and the transition guardrail kidney-shaped hole (81), and one unbent end of the third connecting plate (9) is fixed on the concrete guardrail (4).
5. The adjustable wing-free wall transition guardrail according to claim 3, wherein the transition guardrail (8) is provided with a claw (82), and the claw (82) is abutted in the wave groove of the three-wave plate (1).
6. The adjustable wing-free wall transition guardrail according to claim 1, wherein a plurality of upright posts (2) are arranged, and the plurality of upright posts (2) are connected at different positions of the three-wave plate (1).
7. The adjustable wing-free wall transition guardrail according to claim 6, further comprising a friction beam (7), wherein one end of the friction beam (7) is bent, one unbent end of the friction beam (7) is fixed on the concrete guardrail (4), the friction beam (7) is connected with a plurality of upright posts (2), and one bent end of the friction beam (7) is arranged on the end surface, away from the concrete guardrail (4), of the upright posts (2) facing away from a highway.
8. The adjustable wing-free wall transition guardrail according to claim 1, further comprising a first connecting piece (10) and a second connecting piece (11), wherein the first connecting piece (10) is fixedly connected to the upper end face of the concrete guardrail (4), a first kidney-shaped hole (101) is formed in the first connecting piece (10) along the vertical direction, a second kidney-shaped hole (111) is formed in the second connecting piece (11) corresponding to the first kidney-shaped hole (101), the first connecting piece (10) and the second connecting piece (11) are connected through bolts, a third kidney-shaped hole (112) is formed in the second connecting piece (11), and the third kidney-shaped hole (112) is fixedly arranged on the three-wave plate (1) through bolts, so that the three-wave plate (1) is connected with the second connecting piece (11).
9. The adjustable wing-free wall transition guardrail according to claim 8, wherein a plurality of positioning holes (113) are formed in the upper side and the lower side of the second kidney-shaped hole (111) at the positions of the second connecting piece (11) along the horizontal direction, and the first connecting piece (10) and the second connecting piece (11) can be connected by penetrating through the first kidney-shaped hole (101) and different positioning holes (113) through bolts.
10. The adjustable wing-free wall transition guardrail according to claim 8, wherein the first connecting piece (10) is welded with a first rib plate (12), and the second connecting piece (11) is welded with a plurality of second rib plates (13) along the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420745938.5U CN222083415U (en) | 2024-04-10 | 2024-04-10 | Adjustable wing-free wall transition guardrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420745938.5U CN222083415U (en) | 2024-04-10 | 2024-04-10 | Adjustable wing-free wall transition guardrail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222083415U true CN222083415U (en) | 2024-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420745938.5U Active CN222083415U (en) | 2024-04-10 | 2024-04-10 | Adjustable wing-free wall transition guardrail |
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| Country | Link |
|---|---|
| CN (1) | CN222083415U (en) |
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2024
- 2024-04-10 CN CN202420745938.5U patent/CN222083415U/en active Active
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