CN202519792U - Butt joint part using axial cross insertion plate to enable steel tubes to be in butt joint - Google Patents

Abstract

The utility model discloses a butt fitting for butt jointing of steel pipes with an axial cross plate. Insert one end of the cross plate into the axial cross groove of the respective steel pipes at the butt joint ends of the two steel pipes, and connect the other ends of the cross plate not embedded in the axial cross grooves of the respective steel pipes into one body with angle steel; Or at least one intermediate steel pipe is connected in series at the butt ends of the two steel pipes. The two steel pipes of the utility model are rigidly connected by the butt joint type of the cross plate, which can effectively transmit various internal forces such as axial force, bending moment, shear force, torque, etc.; the construction is convenient and safe, and the on-site installation of the steel pipes adopts non-welded bolts The connection is not only convenient for construction and installation, but also gets rid of the dependence of the quality of the connection on the technical level of the welder, and the non-welding working method can avoid fire hazards; it has a wide range of applications, and the cross plate butt joint type can be used for the axial connection between the same type of multi-section steel pipes. It can also be used for axial connection between different types of steel pipes such as outer diameter, cross-sectional shape, and wall thickness.

Description

A butt joint for steel pipes with an axial cross plate

technical field

The utility model relates to a steel pipe connector, in particular to a butt joint for a steel pipe with an axial cross plate in a building structure.

Background technique

The usual types of axial connection between steel pipes are: (1) Welding type: first open a 35~45 ^° groove at the butt joint of the two steel pipes, and then weld; (2) Flange connection type: first weld the two steel pipes Weld a flange plate at the butt joints of the joints, and then connect them with high-strength bolts. The advantage of the welding type is that the structure is good, and the disadvantage is that the welding quality control is highly dependent on the technical level of the operator and there is a potential fire hazard. The advantage of the flange connection type is that it avoids the disadvantages of the welding type, but the disadvantage is that the diameter of the flange is larger than that of the steel pipe, and the formed larger-sized protruding edge will affect the layout of other rods and the appearance of the structure.

Contents of the invention

In order to solve the problems of fire hazards and oversized connection parts in the background technology, the purpose of this utility model is to provide a butt joint for steel pipes with an axial cross plate.

The technical solution adopted by the utility model to solve its technical problems is as follows:

Axial cross grooves are respectively opened at the butt ends of the first steel pipe and the second steel pipe. The other ends of the first steel pipe and the second steel pipe axial cross slots of the two cross inserting plates are respectively equipped with angle steels, which are connected into one body through the round holes of the insert plates and the round holes of the angle irons with bolts.

At least one intermediate steel pipe is connected in series at the butt ends of the first steel pipe and the second steel pipe, and the two ends of each intermediate steel pipe are respectively provided with axial cross grooves, and respectively insert one end of the cross plate into the The two ends of the middle steel pipe are fixed in the axial cross grooves; one end of a cross plate not embedded in the axial cross groove of the middle steel pipe and one end of the cross plate not embedded in the axial cross groove of the previous steel pipe are respectively equipped with angle steel , use bolts to connect through the round hole of the insert plate and the round hole of the angle steel; one end of the other cross insert plate that is not embedded in the axial cross groove of the middle steel pipe is connected with the cross insert that is not embedded in the axial cross groove of the next steel pipe One end of the plate is respectively equipped with angle steel, which is butted into one body through the round hole of the insert plate and the round hole of the angle steel with bolts.

The radial section of the steel pipe is circular, elliptical, rectangular or regular polygonal.

A method of butt-joining steel pipes with an axial cross plate:

At the butt joint ends of the two steel pipes, respectively insert one end of the cross plate into the axial cross groove of the respective steel pipes for fixed connection, and the other end of the cross plate not embedded in the axial cross groove of the respective steel pipes is butt-jointed with an angle steel to form a whole.

At least one intermediate steel pipe is connected in series at the butt ends of the two steel pipes, and the two ends of each intermediate steel pipe are respectively embedded with one end of the cross plate into the axial cross grooves at both ends of the intermediate steel pipe; One end of the cross plate embedded in the axial cross groove of the middle steel pipe and the end of the previous steel pipe not embedded in the axial cross groove are butted together with an angle steel; the other cross plate not embedded in the axial cross groove of the middle steel pipe is One end and the end of the latter steel pipe not embedded in the axial cross groove are butted into one body with angle steel.

Compared with background technology, the beneficial effect that the utility model has is:

1. The mechanical performance of the joint of the steel pipe is good. The two steel pipes form a rigid connection through the butt joint of the cross plate, which can effectively transmit various internal forces such as axial force, bending moment, shear force, and torque.

2. The construction is convenient and safe, and the connection quality is easy to control. The on-site installation of the steel pipe adopts the non-welding bolt connection method, which is not only convenient for construction and installation, but also gets rid of the dependence of the connection quality on the technical level of the welding workers. At the same time, the non-welding working method can avoid fire hazards.

3. Wide application range. The cross plate butt joint type can be applied not only to the axial connection between the same type of multi-section steel pipes, but also to the axial connection between different types of steel pipes such as outer diameter, cross-sectional shape, and wall thickness.

Description of drawings

Figure 1 is a side elevation view and a sectional view of the cross board.

Fig. 2 is a side elevation view and a sectional view of the elliptical steel pipe after being grooved.

Fig. 3 is a side elevation view and a section view of the grooved side of the oval steel pipe and the cross plate welded.

Fig. 4 is a side elevation view and a sectional view of the drilled angle steel.

Fig. 5 is a side elevation view and a section view of two elliptical steel pipes axially butt-jointed by a cross plate.

Fig. 6 is a side elevation view of three elliptical steel pipes axially butt-jointed by a cross plate.

In the figure: 1. Cross plate, 2. Hole of plate, 3. First steel pipe, 4. Cross groove, 5. Weld seam, 6. Angle steel, 7. Round hole of angle steel, 8. Second steel pipe, 9, bolts, 10, middle steel pipe.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, and Fig. 5, an axial cross groove 4 is formed at the butt end of the first steel pipe 3, and one end of the cross plate 1 is embedded in the axial direction of the first steel pipe 3. Fixed connection in the cross groove 4 (welding is generally used, and 5 is the weld seam); the connection method and steps of the second steel pipe 8 and its corresponding cross plate and the connection method and steps of the first steel pipe 3 and its corresponding cross plate The same; the other end of the cross plate that is not embedded in the axial cross groove of the first steel pipe 3 and the second steel pipe 8 is respectively equipped with angle steel 6, and bolts 9 (high-strength bolts are used, the same below) pass through the plate holes 2 and Angle steel circular holes 7 are butted into one body.

As shown in Figure 6, at least one intermediate steel pipe 10 is connected in series at the butt ends of the first steel pipe 3 and the second steel pipe 8, and the two ends of each intermediate steel pipe 10 are respectively provided with axial cross Insert one end of the cross plate into the axial cross grooves at both ends of the middle steel pipe 10 and fix it respectively; one end of the cross plate not embedded in the axial cross groove of the middle steel pipe 10 is connected to the axial cross groove of the previous steel pipe that is not embedded. One end of the cross plate in the groove is respectively equipped with angle steel 6, and the bolt 9 passes through the hole 2 of the plate and the round hole 7 of the angle steel to butt into one; the other cross plate is not embedded in the axial cross groove of the middle steel pipe 10 Angle steel 6 is respectively housed with one end of the cross plate that is not embedded in the axial cross groove of the back steel pipe, and is integrated with bolt 9 through the plate hole 2 and the angle steel hole 7.

The radial section of the steel pipe is circular, elliptical, rectangular or regular polygonal.

Embodiment 1: The method and steps for butt jointing of two steel pipes with elliptical cross-sections with an axial cross plate.

1. As shown in Figure 1a and Figure 1b, one end of each steel plate on the cross plate 1 is processed with several plate holes 2 for connecting high-strength bolts;

2. As shown in Figure 2a and Figure 2b, the butt end of the first steel pipe 3 is cut and processed to open a cross groove 4, the width of the slot is equivalent to the thickness of the cross plate 1, and can accommodate the insertion of the cross plate 1 along the axial direction of the steel pipe 3 ;

3. As shown in Figure 3a and Figure 3b, after one end of the unprocessed round hole 2 of the cross plate 1 is inserted into the end of the first steel pipe 3 with the cross groove 4, the cross plate 1 and the first steel pipe 3 The connection is welded to form a weld 5;

4. The connection method and steps of the second steel pipe 8 and its corresponding cross plate are the same as those of the first steel pipe 3 and its corresponding cross plate;

5. As shown in Figure 4a and Figure 4b, the two ends of the angle steel 6 connecting the two cross boards 1 are drilled with angle steel round holes 7, and the diameter and number of the angle steel round holes 7 at one end are the same as those of the cross board 1 The hole 2 is the same;

6. As shown in Figure 5a and Figure 5b, pass the high-strength bolt 9 through the angle steel 6 and the angle steel round hole 7 on the cross plate 1 and the plate hole 2, and after tightening, two steel pipes are realized, that is, the first steel pipe 3 and the axial connection between the second steel pipe 8.

Embodiment 2: A method and steps for butt jointing of three or more steel pipes with elliptical cross-sections using an axial cross plate.

1. As shown in Figure 1a and Figure 1b, one end of each steel plate on the cross plate 1 is processed with several plate holes 2 for connecting high-strength bolts;

2. As shown in Figure 2a and Figure 2b, the butt end of the steel pipe 3 is cut and processed to form a cross groove 4, the width of which is equivalent to the thickness of the cross plate 1, and can accommodate the insertion of the cross plate 1 along the axial direction of the steel pipe 3;

3. As shown in Figure 3a and Figure 3b, after inserting one end of the unprocessed round hole 2 of the cross plate 1 into the end of the first steel pipe 3 with the cross groove 4, the cross plate 1 and the first steel pipe 3 The connection is welded to form a weld 5;

4. The connection method and steps of the second steel pipe 8 and its corresponding cross plate are the same as those of the first steel pipe 3 and its corresponding cross plate;

5. As shown in Figure 4a and Figure 4b, the two ends of the angle steel 6 connecting the two cross boards 1 are drilled with angle steel round holes 7, and the diameter and number of the angle steel round holes 7 at one end are the same as those of the cross board 1 The hole 2 is the same;

6. As shown in Figure 5a, Figure 5b, and Figure 6, pass the high-strength bolt 9 through the angle steel 6 and the angle steel round hole 7 on the cross plate 1 and the plate hole 2, and after tightening, two steel pipes are realized, that is, the first Axial butt joint between a steel pipe 3 and an intermediate steel pipe 10;

7. As shown in Figure 6, use the same steps above to complete the axial butt joint of the middle steel pipe 10 and the second steel pipe 8, thereby realizing the three steel pipes, namely the first steel pipe 3, the middle steel pipe 10, and the second steel pipe 8. Axial docking;

8. By analogy, the same method and steps above can be used to realize the axial butt joint of multiple steel pipes.

The above-mentioned specific embodiments are used to explain the utility model, rather than to limit the utility model. Within the spirit of the utility model and the scope of protection of the claims, any modifications and changes made to the utility model fall into the scope of the utility model. scope of protection.

Claims (3)

1. A butt joint for steel pipes with an axial cross plate, characterized in that: there are axial cross grooves at the butt joint ends of the first steel pipe (3) and the second steel pipe (8), respectively, and the two cross One end of the inserting plate is respectively embedded in the axial cross grooves of the first steel pipe (3) and the second steel pipe (8), and is not embedded in the axial cross grooves of the first steel pipe (3) and the second steel pipe (8). The other ends of the two cross boards of the groove are respectively equipped with angle steels, which are butted into one body through the round holes of the boards and the round holes of the angle steels with bolts. 2. A butt fitting for butt jointing steel pipes with an axial cross plate according to claim 1, characterized in that: at least There is an intermediate steel pipe connected in series, and the two ends of each intermediate steel pipe are respectively provided with axial cross grooves, and one end of the cross plate is respectively embedded in the axial cross grooves at both ends of the intermediate steel pipe; one piece is not embedded in the intermediate steel pipe One end of the cross plate in the axial cross groove and one end of the cross plate not embedded in the axial cross groove of the previous steel pipe are respectively equipped with angle steel, and are connected into one body through the round hole of the plate and the round hole of the angle steel with bolts; One end of another cross plate not embedded in the axial cross groove of the middle steel pipe and one end of the cross plate not embedded in the axial cross groove of the next steel pipe are respectively equipped with angle steel, and the bolts pass through the round hole of the plate and the angle steel The round holes are butted into one. 3. A butt fitting for butt steel pipes with an axial cross plate according to claim 1 or 2, characterized in that: the radial section of the steel pipe is circular, elliptical, rectangular or regular polygonal.

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