CN103790904B - The guardrail that facial canal is connected with column swelling - Google Patents

Abstract

The invention discloses a guardrail for the expansion connection of a surface tube and a column, which comprises a surface tube, a column and an expansion joint. The bottom of the surface tube is provided with a groove, and one end of the expansion joint is inserted in the column and passed through the top wire and the column. Connection, the expansion joint is sleeved in the groove at the part protruding from the column. When the top screw is tightened, the expansion joint expands and connects with the inner wall of the column and the inner wall of the groove at the same time. The end of the column is located in the groove External and butt-connected with the bottom of the surface tube. The assembled guardrail has the advantages of simple structure, good stability, and the ability to realize post-installation of surface tubes.

Description

Guardrails with expansion joints between surface pipes and uprights

technical field

The invention mainly relates to pipe material connection technology, in particular to a guardrail for expansion-tight connection of surface pipes and upright posts.

Background technique

In fields such as guardrails and protective windows, the connection between the surface pipe and the column needs to be realized through a connecting piece. In the prior art, fasteners are generally used to pass through the outer wall of the surface tube and then directly threaded with the connector. At the same time, the connector is also connected to the column through the fastener. When this structure is used for connection, the surface tube and the column are evenly connected. It needs to be drilled and tapped. Too many holes on the surface tube will affect its mechanical strength. The connection between the surface tube and the column needs to be accurately positioned to achieve installation. There is no adjustable space, which greatly affects the installation efficiency. The stress is mainly concentrated on the fasteners, and the stress points of the fasteners are prone to shear force and fracture failure, which also leads to shortened service life of guardrails and protective windows.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a guardrail with simple structure, good stability, and the expansion-tight connection between the surface tube and the upright post which can be installed after the surface tube.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A guardrail for the expansion connection of surface pipes and uprights, including surface pipes, uprights and expansion joints, the bottom of the surface pipes is provided with a groove, and the expansion joints are inserted into the uprights at one end and passed through the top wire and the uprights The expansion joint is sleeved in the groove at the part protruding from the column. The end of the column is located outside the groove and is connected to the bottom of the surface tube. When the top wire is tightened, the expansion The joint expands and simultaneously expands and connects with the inner wall of the column and the inner wall of the groove.

As a further improvement of the above technical solution:

The expansion joint includes a bottom plate, side support plates are bent on both sides of the bottom plate, two side support plates are bent inward to form side plates, and the ends of the side plates are bent to the outside with a first Expansion plate, the top wire is threadedly connected with one side plate, and is opposed to the other side plate. When the top wire is tightened, the side plate expands to both sides and drives the side support plate to expand and connect with the inner wall of the column. An expansion plate expands to both sides and is tightly connected with the inner wall of the groove.

Both sides of the side plate are bent inwardly with reinforcing ribs.

The side support plates are closely attached to the inner wall of the column, and a positioning hole is opened on one of the side support plates.

The expansion joint is bent inwardly with a second expansion plate on both sides of a side plate, and an inwardly inclined jacking plate is bent at the end of the second expansion plate. The jacking wire and the side plate The boards are threaded and pass through the jacking board to offset against the other side board. When the jacking screw is tightened, the jacking board expands to both sides and drives the two second expansion boards to expand and connect with the inner wall of the column. .

A positioning plate is provided on the side of the second expansion plate close to the surface tube, and the end of the positioning plate is bent outwards to form a hooking edge.

The jacking wire includes a first pushing part and a second pushing part, the end of the first pushing part is against the side plate, the second pushing part is screwed to the other side plate, and the second The end of the pushing part is against the lifting plate.

The butt joint between the surface pipe and the column is sandwiched with a decorative shell for covering the end of the column, and the decorative shell is provided with a rib.

The expansion joint is a stamped sheet metal product.

Compared with the prior art, the present invention has the advantages of:

In the guardrail of the present invention, where the surface tube and the column are connected by expansion, the bottom of the surface tube is provided with a groove, which has a simple structure and is easy to install. The joint is connected to the column to realize the pre-installation of the expansion joint and the column, and then the part of the expansion joint protruding from the column is sleeved in the groove. The inner wall and the inner wall of the groove are tightened and connected, so as to realize the installation of the surface pipe and the column. Compared with the traditional direct screw connection, the guardrail is a plug-in structure. The inside of the groove is expanded, and the expansion of the two parts can realize the expansion and tight connection of the surface pipe and the column, without opening holes in the surface pipe, which improves the bearing strength of the surface pipe, and the connection mode of the expansion joint, the surface pipe and the column All are expansion-tight connections, that is, there will be no phenomenon that the force at the joint is concentrated on the fasteners, making the connection more stable and reliable. Moreover, the expansion joints are expanded with the column, and then expanded with the surface tube socket. On the one hand, it can realize the post-installation function of the surface tube, on the other hand, the connection position of the surface tube and the column can be adjusted by sliding along the groove, which greatly improves the installation efficiency, and the end of the column is located outside the groove and connected to the bottom of the surface tube Butt connection, that is, the width of the groove is smaller than the cross-sectional width of the end of the column, and the end of the column overlaps the outside of the groove. This small groove structure further improves the strength of the surface tube.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of Embodiment 1 of the present invention.

Fig. 2 is a three-dimensional structural diagram of Embodiment 1 of the present invention.

Fig. 3 is a schematic front view of the expansion joint in Embodiment 1 of the present invention.

Fig. 4 is a schematic diagram of the three-dimensional structure of the expansion joint in Embodiment 1 of the present invention.

Fig. 5 is a schematic perspective view of the three-dimensional structure of the decorative case in Embodiment 1 of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of Embodiment 2 of the present invention.

Fig. 7 is a schematic front view of the expansion joint in Embodiment 2 of the present invention.

Fig. 8 is a schematic perspective view of the expansion joint in Embodiment 2 of the present invention.

Fig. 9 is a schematic diagram of the three-dimensional structure of the top wire in Example 2 of the present invention.

Each label in the figure means:

1, surface pipe; 11, groove; 2, column; 3, expansion joint; 31, bottom plate; 32, side support plate; 321, positioning hole; 33, side plate; 331, first expansion plate; 332, Reinforcing rib; 333, second expansion plate; 334, jacking plate; 335, positioning plate; 3351, articulated edge; 4, jacking wire; 41, first pushing part; 42, second pushing part; 5 , Decorative shell; 51, Rib.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1:

Figures 1 to 5 show the first embodiment of the guardrail in which the surface pipe and the column are tightened and connected according to the present invention. The assembled guardrail includes a surface pipe 1, a column 2 and an expansion joint 3, and the bottom of the surface pipe 1 is provided with a groove 11. Its structure is simple and easy to install. When assembling, first insert one end of the expansion joint 3 into the column 2, and connect the expansion joint 3 to the column 2 with the top wire 4, so as to realize the expansion joint 3 and the column 2 Then the part of the expansion joint 3 protruding from the column 2 is sleeved in the groove 11, and when the top screw 4 is further tightened, the expansion joint 3 expands and simultaneously contacts with the inner wall of the column 2 and the inner wall of the groove 11. Expansion connection, so as to realize the installation of the surface pipe 1 and the column 2. Compared with the traditional direct screw connection, the guardrail is a plug-in structure, and the expansion joint 3 is only inside the column 2 and the concave The inside of the groove 11 is expanded, and the surface pipe 1 and the column 2 are connected by expansion through the expansion of the two parts. There is no need to open holes on the surface pipe 1, which improves the bearing strength of the surface pipe 1, and the expansion joint 3 and the surface The connection methods of pipe 1 and column 2 are both expansion and tight connection, that is, there will be no phenomenon that the force at the connection is concentrated on the fastener, making the connection more stable and reliable. Moreover, the expansion joint 3 and the column 2 expand On the one hand, the post-installation function of the surface tube 1 can be realized; on the other hand, the connection position of the surface tube 1 and the column 2 can be adjusted by sliding along the groove 11, which greatly improves the installation efficiency , and the end of the column 2 is located outside the groove 11 and connected to the bottom of the surface pipe 1, that is, the width of the groove 11 is smaller than the cross-sectional width of the end of the column 2, and the end of the column 2 overlaps the outside of the groove 11. This small groove structure further improves the strength of the surface pipe 1.

In this embodiment, the expansion joint 3 includes a bottom plate 31, side support plates 32 are bent on both sides of the bottom plate 31, two side support plates 32 are bent inwardly to form a side plate 33, and the ends of the side plate 33 are bent outward. The first expansion plate 331 is folded, and its structure is simple and easy. When assembling, the top wire 4 is screwed to the side plate 33, and the other side plate 33 is offset. The side expands and drives the side support plate 32 to expand and connect with the inner wall of the column 2, and the first expansion plate 331 expands to both sides and expands to connect with the inner wall of the groove 11, which improves the stability and reliability of the connection.

In this embodiment, both sides of the side plate 33 are further bent inwards with reinforcing ribs 332. On the one hand, the reinforcing ribs 332 can support the inner wall of the column 2, and on the other hand, they can prevent the side plate 33 from bending during the jacking process. Deformation improves the stability of the connection.

In this embodiment, the side support plate 32 is closely attached to the inner wall of the column 2, and one of the side support plates 32 is provided with a positioning hole 321, which is threaded with the positioning hole 321 after passing through the tube wall of the column 2 with a fastener, so as to facilitate It is convenient to realize the pre-installation and positioning of the expansion joint 3 and the column 2, and effectively improves the installation efficiency and installation stability.

In this embodiment, the joint between the surface pipe 1 and the column 2 is sandwiched with a decorative shell 5 for coating the end of the column 2, and the decorative shell 5 is coated on the end of the column 2, which improves the visual effect and makes The whole shape is more beautiful and durable, and the decorative shell 5 is provided with a rib 51, which facilitates the positioning of the column 2 on the one hand, making the installation more convenient and fast; on the other hand, the rib 51 is located Between the surface pipe 1 and the column 2, the surface tube 1 and the column 2 can be used to compress the entire decorative shell 5, which improves the connection stability of the decorative shell 5.

In this embodiment, the expansion joint 3 is a stamped and formed sheet metal part, which can ensure good connection strength while being convenient for manufacturing and forming.

Example 2:

Figures 6 to 9 show a second embodiment of a guardrail in which the surface pipe and the upright are expanded and tightened in accordance with the present invention. The assembled guardrail is basically the same as that of Embodiment 1, the only difference being that the expansion joint 3 is on a side plate The two sides of 33 are bent inwardly with a second expansion plate 333, and the end of the second expansion plate 333 is bent with an inwardly inclined jacking plate 334, and the jacking wire 4 is threadedly connected with the side plate 33 and passes through the top After the lifting plate 334 is offset against the other side plate 33, its structure is simple and easy to operate. When the jacking screw 4 is tightened, the lifting plate 334 expands to both sides and drives the two second expansion plates 333 to expand and the column 2 Inner wall expansion connection, in this structure, the side plate 33, the first expansion plate 331 and the second expansion plate 333 realize three-stage expansion, which strengthens the expansion effect and greatly improves the stability and reliability of the connection.

In this embodiment, the second expansion plate 333 is provided with a positioning plate 335 on the side close to the surface tube 1, and the end of the positioning plate 335 is bent outwards to have a hooking edge 3351. The structure is simple and easy, and the positioning plate 335 is supported on The inner wall of the column 2 can prevent the column 2 from swinging during the installation process, making the installation more convenient and fast, and the articulated side 3351 is hung on the end of the column 2 to facilitate the pre-installation of the expansion joint 3 and the column 2.

In this embodiment, the jacking wire 4 includes a first pushing portion 41 and a second pushing portion 42, the end of the first pushing portion 41 is against the side plate 33, and the second pushing portion 42 is against the other side plate 33. Threaded connection, and the end of the second pushing part 42 is offset against the lifting plate 334, that is, the jacking wire 4 has a stepped structure, which can realize two-stage jacking effect, and its structure is simple and easy to implement, which improves the tightening effect.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent implementation of equivalent changes example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims (6)

1. A guardrail in which the surface tube and the column are tightened and connected, it is characterized in that: it includes the surface tube (1), the column (2) and the expansion joint (3), and the bottom of the surface tube (1) is provided with a groove ( 11), the expansion joint (3) is inserted into the column (2) at one end and connected with the column (2) through the top wire (4), and the expansion joint (3) is extended to the column (2) ) is sleeved in the groove (11), and the end of the column (2) is located outside the groove (11) and connected to the bottom of the surface tube (1). When the top screw (4) is tightened, The expansion joint (3) is expanded and connected with the inner wall of the column (2) and the inner wall of the groove (11) at the same time, and the expansion joint (3) includes a bottom plate (31), and the bottom plate (31) There are side support plates (32) bent on both sides, side plates (33) are bent inwards from the two side support plates (32), the ends of the side plates (33) are bent outwards with a second An expansion plate (331), the jacking wire (4) is threadedly connected with one side plate (33) and offset against the other side plate (33), when the jacking wire (4) is tightened, the side plate (33) ) expands to both sides, and drives the side support plate (32) to expand and connect with the inner wall of the column (2), and the first expansion plate (331) expands to both sides to expand and connect with the inner wall of the groove (11), so The expansion joint (3) is bent inwardly with a second expansion plate (333) on both sides of a side plate (33), and the end of the second expansion plate (333) is bent with an inwardly inclined Lifting plate (334), the jacking wire (4) is threadedly connected with the side plate (33) and passes through the jacking plate (334) to resist the other side plate (33), tighten the jacking wire (4) At this time, the lifting plate (334) expands to both sides and drives the two second expansion plates (333) to expand and connect with the inner wall of the column (2). 2. The guardrail according to claim 1, wherein the surface tube and the column are connected by expansion, characterized in that: the second expansion plate (333) is provided with a positioning plate (335) on the side close to the surface tube (1). The end of the positioning plate (335) is bent outwards to have a hooking edge (3351). 3. The guardrail according to claim 2, wherein the surface tube and the column are connected by expansion, characterized in that: the jacking wire (4) includes a first pushing part (41) and a second pushing part (42), so The end of the first pushing part (41) is against the side plate (33), the second pushing part (42) is screwed to the other side plate (33), and the second pushing part (42) The end and jacking plate (334) offset. 4. The guardrail according to any one of claims 1 to 3, characterized in that: the butt joint of the surface tube (1) and the column (2) is provided with a covering The decorative shell (5) at the end of the upright column (2), the decorative shell (5) is provided with a rib (51). 5. The guardrail with the expansion joint between the surface pipe and the column according to any one of claims 1 to 3, characterized in that: the expansion joint (3) is a stamped and formed sheet metal part. 6. The guardrail in which the surface pipe and the column are connected by expansion according to claim 4, characterized in that: the expansion joint (3) is a stamped and formed sheet metal part.