CN216006770U - Steel pipe end of prestressed movable guardrail - Google Patents
Steel pipe end of prestressed movable guardrail Download PDFInfo
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- CN216006770U CN216006770U CN202121684871.1U CN202121684871U CN216006770U CN 216006770 U CN216006770 U CN 216006770U CN 202121684871 U CN202121684871 U CN 202121684871U CN 216006770 U CN216006770 U CN 216006770U
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- connecting piece
- connecting plate
- steel pipe
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Abstract
The utility model discloses a steel pipe end of a prestressed movable guardrail, which comprises a first connecting piece and a second connecting piece, wherein the first connecting piece and the second connecting piece are processed by Q345B steel; the second connecting piece is inserted into the second through hole of the first connecting piece, the cylindrical part of the second connecting piece is used for inserting the guardrail steel pipe, and the conical through hole of the second connecting piece is used for fixing the steel strand; the first through hole of the first connecting piece is used for inserting the pin shaft. The end of the steel pipe consists of two connecting pieces, and a single connecting piece is simple in structure and low in manufacturing cost and can be formed by machining; and, adopt the integrated design of two connecting pieces, avoid stress concentration, the end is at first cracked when preventing to receive the striking to the whole crashproof performance of movable guardrail has been promoted.
Description
Technical Field
The utility model relates to the technical field of movable guardrails, in particular to a steel pipe end head of a prestressed movable guardrail.
Background
The highway central separation zone is required to be provided with an emergency movable opening every 2 kilometers, a movable guardrail is arranged at the movable opening to isolate left and right lanes together with a central separation zone guardrail at normal time, the movable guardrail is required to have higher anti-collision performance, the movable opening is started when emergency or highway maintenance construction is required, and the movable guardrail is required to be quickly and flexibly removed when being started. The movable guardrail is generally formed by connecting fixed trusses at two ends with a plurality of movable truss units, the existing movable guardrail is various, the anti-collision capacity of the prestressed movable guardrail is high, the movable guardrail is convenient and quick to open, and the movable guardrail has multiple applications in the existing road construction. The prestressed movable guardrail has the advantages that the steel stranded wires for applying prestress penetrate through the cross beam steel pipes of the truss units, so that the tensile strength and the deformation resistance of the truss steel pipes are improved, the anti-collision capacity of the movable guardrail is improved, the steel stranded wires are fixed at the ends of the cross beam steel pipes, and the ends of the cross beam steel pipes are connected with the adjacent truss units, and therefore, the design of the cross beam steel pipe ends with reasonable structures is of great significance to technicians in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a steel pipe end of a prestressed movable guardrail.
The technical scheme adopted by the utility model is as follows:
the steel pipe end of the prestressed movable guardrail comprises a first connecting piece and a second connecting piece which are made of Q345B steel;
the first connecting piece comprises a first connecting plate and a second connecting plate which are arranged in parallel and have the same structure, and a third connecting plate which is vertically connected to one side of the first connecting plate and one side of the second connecting plate, the other side of the first connecting plate and the other side of the second connecting plate are correspondingly provided with first through holes, the first through holes are used for inserting pin shafts, and the third connecting plate is provided with second through holes;
the second connecting piece is a cylinder with a conical through hole in the center, and the cylinder at the large end of the conical through hole protrudes outwards in the radial direction to form a truncated cone-shaped blocking part;
the second connecting piece is inserted into the second through hole of the first connecting piece, the blocking part of the second connecting piece is abutted against the inner side face of the third connecting plate of the first connecting piece, the cylindrical part of the second connecting piece is used for inserting the guardrail steel pipe, and the conical through hole of the second connecting piece is used for fixing the steel strand.
Furthermore, the first connecting plate, the second connecting plate and the third connecting plate are connected into a U shape through welding.
Furthermore, the ends of the first connecting plate and the second connecting plate, which are provided with the first through holes, are arc-shaped, and the centers of the arc-shaped and the first through holes coincide.
Furthermore, the truncated cone-shaped blocking part is provided with two parallel clamping surfaces.
The utility model has the beneficial effects that: the end of the steel pipe consists of two connecting pieces, and a single connecting piece is simple in structure and can be formed by machining, so that the manufacturing cost is greatly reduced compared with the existing integrally cast connecting hinge; in addition, the existing connecting hinge formed by casting has poor toughness and is easy to break, and particularly, the connecting part of the anchor part and the connecting part is easy to break when being impacted by external force due to stress concentration and thin wall thickness, so that the overall anti-collision performance of the movable guardrail is reduced; this application has avoided stress concentration's appearance through the integrated design who adopts two connecting pieces to through adopting Q345B low alloy material to guarantee the bulk strength and the toughness of connecting piece, thereby further promoted movable guardrail's whole crashproof ability.
Drawings
FIG. 1 is a schematic view showing the structure of a steel pipe end of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic structural view of the first connecting member of the present invention.
Fig. 4 is a schematic structural view of a second connecting member of the present invention.
Fig. 5 is a side view of fig. 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings and a preferred embodiment.
Embodiment mode 1
Referring to fig. 1 to 5, the embodiment provides a steel pipe end of a prestressed movable guardrail, which comprises a first connecting member 10 and a second connecting member 20 machined from Q345B steel.
The first connecting piece 10 comprises a first connecting plate 11, a second connecting plate 12 and a third connecting plate 13, the first connecting plate 11 and the second connecting plate 12 are identical in structure and are arranged in parallel, and the third connecting plate 13 is vertically connected to the left sides of the first connecting plate 11 and the second connecting plate 12. First connecting plate 11 and second connecting plate 12 are that one end is curved rectangle flat board, and third connecting plate 13 is the rectangle flat board, and first connecting plate 11, second connecting plate 12 and third connecting plate 13 are the U-shaped of opening towards the right side through welded connection, and the U-shaped opening is used for holding the connecting block, articulates the steel pipe end of two guardrail units through connecting block and round pin axle and connects. The arc-shaped ends of the first connecting plate 11 and the second connecting plate 12 are correspondingly provided with a first through hole 110, and the center of the first through hole 110 coincides with the arc-shaped center. The first through hole 110 is used for inserting a pin, and a second through hole 130 is formed in the center of the third connecting plate 13.
The second connecting piece 20 comprises a cylindrical connecting piece body 21, the outer side wall of one end of the cylindrical connecting piece body 21 protrudes outwards in the radial direction to form a circular truncated cone-shaped blocking portion 22, and two parallel planes 220 are arranged on the outer circumferential surface of the circular truncated cone-shaped blocking portion 22 and are convenient for clamping tools during installation. The outer diameter of the cylindrical connector body 21 is smaller than the inner diameter of the second through hole 130, and the distance between the two flat surfaces 220 is larger than the inner diameter of the second through hole 130. The center of the cylindrical connecting piece body 21 is provided with a tapered through hole 23, and the large end of the tapered through hole 23 extends to the truncated cone-shaped blocking part 22.
The second connecting piece 20 is inserted into the second through hole 130 of the first connecting piece 10, the cylindrical connecting piece body 21 extends in the direction far away from the first connecting piece 10 and is used for connecting a beam steel pipe, the circular truncated cone-shaped blocking portion 22 abuts against the inner side face of the third connecting plate 13, and the conical through hole 23 is used for being matched with a clamp to fix a steel strand.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.
Claims (4)
1. The steel pipe end of the prestressed movable guardrail is characterized by comprising a first connecting piece and a second connecting piece which are machined from Q345B steel;
the first connecting piece comprises a first connecting plate and a second connecting plate which are arranged in parallel and have the same structure, and a third connecting plate which is vertically connected to one side of the first connecting plate and one side of the second connecting plate, the other side of the first connecting plate and the other side of the second connecting plate are correspondingly provided with first through holes, the first through holes are used for inserting pin shafts, and the third connecting plate is provided with second through holes;
the second connecting piece is a cylinder with a conical through hole in the center, and the cylinder at the large end of the conical through hole protrudes outwards in the radial direction to form a truncated cone-shaped blocking part;
the second connecting piece is inserted into the second through hole of the first connecting piece, the blocking part of the second connecting piece is abutted against the inner side face of the third connecting plate of the first connecting piece, the cylindrical part of the second connecting piece is used for inserting the guardrail steel pipe, and the conical through hole of the second connecting piece is used for fixing the steel strand.
2. The steel pipe end of a prestressed movable fence according to claim 1, wherein the first connecting plate, the second connecting plate and the third connecting plate are connected into a U-shape by welding.
3. The steel pipe end of a prestressed movable fence as set forth in claim 2, wherein the ends of the first and second connecting plates, at which the first through-holes are formed, are curved, and the center of the curve coincides with the center of the first through-hole.
4. The steel pipe end of a prestressed movable fence as set forth in claim 1, wherein said circular truncated cone-shaped block portion is provided with two parallel clamping surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121684871.1U CN216006770U (en) | 2021-07-22 | 2021-07-22 | Steel pipe end of prestressed movable guardrail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121684871.1U CN216006770U (en) | 2021-07-22 | 2021-07-22 | Steel pipe end of prestressed movable guardrail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216006770U true CN216006770U (en) | 2022-03-11 |
Family
ID=80527971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121684871.1U Active CN216006770U (en) | 2021-07-22 | 2021-07-22 | Steel pipe end of prestressed movable guardrail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216006770U (en) |
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2021
- 2021-07-22 CN CN202121684871.1U patent/CN216006770U/en active Active
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