CN114087265B

CN114087265B - Square tube joint

Info

Publication number: CN114087265B
Application number: CN202111495676.9A
Authority: CN
Inventors: 郭雅珑
Original assignee: Taitoh Machinery Shanghai Co ltd
Current assignee: Taitoh Machinery Shanghai Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2024-09-24
Anticipated expiration: 2041-12-09
Also published as: CN114087265A

Abstract

The invention belongs to the technical field of pipe connection and discloses a square pipe joint, which comprises a connecting piece and an adapter, wherein the connecting piece comprises a flat plate connecting part, the front end of the flat plate connecting part is provided with a U-shaped clamping groove with the opening direction perpendicular to the flat plate connecting part, the other end of the flat plate connecting part is provided with an extending part bent along the opening direction of the U-shaped clamping groove, the tail end of the extending part is inwards provided with a straight-line buckle parallel to the U-shaped clamping groove, the adapter comprises a plugging end and a flange end, the plugging end is symmetrically provided with two U-shaped opening grooves back to back, the inside of the flange end is symmetrically provided with a channel for the connecting piece to pass through, the tail end of the U-shaped opening groove is communicated with the channel, the outer wall of the channel is provided with a screw through hole, and the flat plate connecting part is provided with a screw hole corresponding to the U-shaped clamping groove, and the connecting piece is fixed with the adapter through a screw. The invention does not need welding in the assembly process, is environment-friendly and energy-saving, and is convenient to assemble and adjust; the square tubes can be combined and connected in multiple directions on the same plane in the middle, so that the connection strength is high; the parts are few, the standardization degree is high, and the method is suitable for batch processing.

Description

Square tube joint

Technical Field

The invention relates to the technical field of pipe fitting connection, in particular to a square pipe joint.

Background

Square tubes are widely used for building various skeletons due to the stability and installability of the structure. The existing square pipes are connected in a welding way, the high-strength requirement can be guaranteed by adopting the connecting way, but the welding and welding line treatment is time-consuming and labor-consuming, particularly, the surface treatment process is more complicated, the environment is not environment-friendly and energy-saving, and the subsequent integral assembly is not adjustable; for large frameworks to be disassembled, connecting pieces are welded at the connecting parts, screw holes are preset on the connecting pieces, through holes of bolts are preset on the square tube walls, and the connecting pieces are connected and fixed by the bolts, so that the connecting process is complicated, and the surface is abrupt and rough; the adapter is connected at the end part of the square tube in a plugging manner, and the adapter with multiple specifications is prefabricated according to different connection combinations, so that the adapter has more specifications and higher manufacturing cost, and meanwhile, the high-strength requirement is difficult to ensure; when the square pipes are required to be connected in the vertical direction at the middle part of the square pipe, the square pipes are also required to be connected by means of a connecting piece, and the square pipes cannot be connected in multiple directions at the same part.

To sum up: the technical problems existing in the existing square pipe connection are as follows:

1) The traditional welding connection has complex surface treatment process, rough surface, difficult guarantee of the whole assembly precision and inconvenient field operation;

2) The adapter is adopted for adapter connection, so that the adapter is more in specification, the manufacturing cost of parts is higher, the connection strength is not high, and the adapter cannot adapt to multidirectional connection square tubes at the same position in the middle.

Disclosure of Invention

The invention aims to solve the technical problems of the conventional square pipe connection, and provides a square pipe joint which does not need a welding procedure, has a neat and attractive surface of a skeleton after assembly, is suitable for high-precision assembly, can be used for connecting square pipes in a multi-direction combination manner at the same position in the middle, meets the requirement of high strength, has fewer parts and high standardization degree of parts, and is suitable for batch processing.

The technical problems solved by the invention can be realized by adopting the following technical scheme:

On the one hand, the invention provides a square pipe joint, which comprises a connecting piece, an adapter, a first square pipe and a second square pipe, wherein the connecting piece is two symmetrically arranged, the connecting piece comprises a flat plate connecting part, the front end of the flat plate connecting part is provided with a U-shaped clamping groove with an opening direction perpendicular to the flat plate connecting part, the other end of the flat plate connecting part is provided with an extending part bent along the opening direction of the U-shaped clamping groove, the tail end of the extending part is inwards provided with a first square pipe buckle parallel to the U-shaped clamping groove, the adapter comprises a plugging end and a flange end, the plugging end is symmetrically provided with two U-shaped opening grooves back to back, the inside of the flange end is symmetrically provided with a channel for the connecting piece to pass through, the tail end of the U-shaped opening grooves is communicated with the channel, the outer wall of the channel is provided with a screw through hole, the flat plate connecting part is provided with a corresponding screw hole, the first square pipe connecting wall is provided with a square pipe buckle capable of allowing the end of the U-shaped clamping groove to pass through, the second square pipe connecting buckle is inwards provided with a square pipe connecting buckle parallel to the U-shaped clamping groove, the square pipe connecting end is connected with the first square pipe connecting groove in a direction perpendicular to the first square pipe connecting groove, and the first square pipe connecting end is screwed with the first square pipe connecting end, and the second square pipe connecting end is connected with the first square pipe connecting groove in a direction perpendicular to the screw through the plug.

As a further limitation, the width of the notch of the U-shaped clamping groove is not smaller than the wall thickness of the first square tube.

As a further definition, the U-shaped open slot has a width that is not less than the width of the connector.

As a preferable scheme, the screw is a set screw, the set screw passes through the screw through hole and is matched with the screw hole, and the tail end of the set screw is propped against the inner wall of the channel.

As a preferable scheme, the width between the left side surface and the right side surface of the flange end is equal to the side length of the first square tube.

As a preferable scheme, an anti-skid groove is arranged on the inner wall of the channel and is matched with the back bulge of the connecting piece.

As a preferable scheme, a decorative cover is arranged in the screw through hole.

As a preferable scheme, a yielding groove is arranged at the joint of the flange end and the plug end.

As a preferable scheme, the outer edge of the top end of the U-shaped open groove is provided with a chamfer.

Compared with the prior art, the invention has the following beneficial technical effects due to the adoption of the technical scheme:

1) The welding process is not needed, the device is suitable for clean environment installation, is convenient to assemble and adjust, and meets the high-precision assembly requirement;

2) The square pipes can be connected in a multi-direction combined mode at the same position in the middle, the requirement of high strength is met, parts are fewer, the standardization degree of parts is high, and the square pipes are suitable for batch processing.

Drawings

FIG. 1 is a schematic cross-sectional view showing a connection state of a first square tube and a second square tube according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view showing a connection state of a first square tube and a second square tube according to a second embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view showing a state in which a first square tube and a second square tube are disconnected;

Fig. 4 is a schematic diagram showing an explosion state of a connection state of a first square pipe and a second square pipe according to a first embodiment of the present invention;

fig. 5 is a schematic diagram of a multi-directional square pipe connected on the same plane as a first square pipe according to the connection scheme of the first embodiment of the present invention.

The reference numerals include:

1. A connecting piece; 2. an adapter; 3. a first square tube; 4. a second square tube; 5. a screw; 6. a decorative cover; 7. a third square tube;

11. A flat plate connecting part; 12. an extension; 13. a protrusion;

21. a plug end; 22. a flange end; 23. an anti-skid groove; 24. a relief groove;

31. Square holes;

41. straight groove

111. A U-shaped clamping groove; 112. screw holes;

121. a straight buckle;

211. U-shaped open slot; 212. chamfering;

221. A channel; 222. screw via holes;

Detailed Description

In order that the manner in which the invention is accomplished, as well as the manner in which it is characterized and attained and its efficacy, a better understanding of the invention is obtained, a further description of the invention will be obtained when reference is made to the accompanying drawings and specific examples.

As shown in fig. 1, 2, 3, 4 and 5: the square pipe joint comprises a connecting piece 1, an adapter 2, a first square pipe 3 and a second square pipe 4, wherein the connecting piece 1 is symmetrically arranged in two, the connecting piece 1 comprises a flat plate connecting part 11, the front end of the flat plate connecting part 11 is provided with a U-shaped clamping groove 111 with the opening direction perpendicular to the flat plate connecting part 11, the notch width of the U-shaped clamping groove 111 is not smaller than the wall thickness of the first square pipe 3, the other end of the flat plate connecting part 11 is provided with an extending part 12 bent along the opening direction of the U-shaped clamping groove 111, the tail end of the extending part 12 is inwardly provided with a straight-line buckle 121 parallel to the U-shaped clamping groove 111, the adapter 2 comprises an inserting end 21 and a flange end 22, the inserting end 21 is symmetrically provided with two U-shaped opening grooves 211 back to back, the width of the U-shaped opening groove 211 is not smaller than the width of the connecting piece 1, the flange end 22 is internally symmetrically provided with a channel 221 for the connecting piece 1 to pass through, the tail end of the U-shaped open slot 211 is communicated with the channel 221, a screw through hole 222 is arranged on the outer wall of the channel 221, a corresponding screw hole 112 is arranged on the flat plate connecting part 11, a square hole 31 which can enable the end part of the U-shaped clamping slot 111 to pass through is arranged on the connecting wall of the first square tube 3, a straight slot 41 which is matched with the straight buckle 121 is arranged on the connecting wall of the second square tube 4, the inserting end 21 is inserted into the end part of the second square tube 4, the outer edge of the vertical wall of the U-shaped open slot 211 is tightly pressed on the inner side wall of the second square tube 4, one end of the second square tube 4 is pressed on one end face of the flange end 22, the other end of the flange end 22 is pressed on the connecting wall of the first square tube 3, the flat plate connecting part 11 is pre-connected with the flange end 22 through the channel 221 by a screw 5, the end of the U-shaped clamping groove 111 passes through the square hole 31, the screw 5 is screwed to pull the connecting piece 1, so that a side wall of the square hole 31 is clamped into the U-shaped clamping groove 111, a side plane of the flat plate connecting portion 11 is attached to an inner side plane of the channel 221, the screw hole 112 coincides with an axis of the screw through hole 222, the straight buckle 121 is clamped into the straight groove 41, the first square pipe 3 and the second square pipe 4 are connected in a vertical direction, and after the perpendicularity correction of the two square pipes is completed, the connecting piece 1 is connected and fixed with the adapter 2 through the screw 5. When the connection of the screw 5 is required to be detached, the connection of the two square pipes can be released at this time by loosening the connection of the screw 5 and pushing the connecting piece 1 inwards through the screw through hole 222 to enable the connecting piece 1 to be separated from the first square pipe 3 and the second square pipe 4.

Therefore, the square tube joint provided by the invention does not need a welding procedure, is suitable for clean environment installation, is convenient to assemble and adjust, is convenient to correct and adjust, and meets the high-precision assembly requirement; because when connecting two square pipes, all relation of connection and effort only relate to one side of first square pipe 3, can not receive the interference when other three side of square pipe need connect square pipe completely, so can connect square pipe in the multi-direction combination of middle same position, square pipe joint part quantity is less, and the standardization level of part is high, is suitable for adopting the mould to carry out batch processing.

As shown in fig. 1: as a preferred embodiment, the screw 5 is a set screw, the set screw 5 passes through the screw through hole 222 and is matched with the screw hole 112, the tail end of the set screw 5 is pressed against the inner wall of the channel 221, and the connecting piece 1 and the adapter 2 are connected and fixed by the reaction force of the inner wall of the channel 221 to the set screw 5.

Of course, the connection and fixation manner of the connector 1 and the adapter 2 is not limited to this, and as a second embodiment, as shown in fig. 2: one end of the screw 5 is provided with a screw head for limiting, the outer dimension of the screw head is larger than the outer diameter of the screw rod, the screw rod of the screw 5 passes through the screw through hole 222 to be matched with the screw hole 112, and one end of the screw head of the screw 5 is pressed on the outer wall of the channel 221 to connect and fix the connecting piece 1 with the adapter 2.

As shown in fig. 1,2, 3, 4 and 5: as a preferable scheme, the width between the left side surface and the right side surface of the flange end 22 is equal to the side length of the first square tube 3, so that the strength requirement is ensured, and the integral feeling after the pipe fitting is connected is stronger.

As shown in fig. 1, 2,3 and 4: as a preferred solution, an anti-slip groove 23 is provided on the inner wall of the channel 221, and the anti-slip groove 23 is adapted to the back protrusion 13 of the connector 1, so as to prevent the connector 1 from sliding out of the channel 221 during assembly.

As shown in fig. 1, 4 and 5: as a preferred solution, the decorative cover 6 is disposed in the screw via hole 222, and after the assembly is completed, the decorative cover 6 seals the screw via hole 222, so as to ensure the cleanliness of the pipe fitting and the square pipe joint.

In this connection, when the second embodiment is used for connection fixation, the decorative cover 6 may be provided in the screw hole 222 when the screw head of the screw 5 is sunk into the screw hole 222.

As shown in fig. 1, 2, 3 and 4: as a preferable scheme, a relief groove 24 is arranged at the joint of the flange end 22 and the plug end 21, so that the flange end 22 and the second square tube 4 can be tightly attached when being connected.

As shown in fig. 1,2, 3 and 4: as a preferable solution, the outer edge of the top end of the U-shaped open slot 211 is provided with a chamfer 212, so that the insertion end 21 is more convenient to be inserted into the second square tube 4.

The above can be seen in the following: the square pipe joint provided by the invention does not need a welding procedure, avoids a complicated surface treatment procedure, is environment-friendly and energy-saving, is suitable for clean environment installation, is convenient to assemble and adjust, and meets the requirement of high-precision assembly; the square pipes can be connected in a multi-direction combined mode at the same position in the middle, the requirement of high strength is met, parts are fewer, the standardization degree of parts is high, and the square pipes are suitable for batch processing.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A square tube joint, characterized in that: including connecting piece, adapter, first side pipe, second side pipe, the connecting piece is two that the symmetry set up, the connecting piece includes dull and stereotyped connecting portion, the front end of dull and stereotyped connecting portion be equipped with the opening direction with dull and stereotyped connecting portion vertically U type draw-in groove, the other end of dull and stereotyped connecting portion is equipped with along U type draw-in groove opening direction bending's extension, the end of extension inwards be equipped with a word buckle of U type draw-in groove parallel, the adapter includes grafting end, flange end, grafting end symmetry is equipped with two back-to-back's U type open slot, the inside symmetry of flange end is equipped with can supply the passageway that the connecting piece passed through, the end of U type open slot with passageway UNICOM is equipped with the screw via hole on the outer wall of passageway, be equipped with the screw hole corresponding to it on the dull and stereotyped connecting portion, set up on the first side pipe connecting wall can supply U type draw-in groove tip passes through the square hole, set up on the second side pipe connecting wall with a word buckle looks adaptation one side of U type draw-in groove, flange end and square pipe connecting piece pass through the square pipe connecting portion, the square pipe connecting piece passes through a square pipe connecting portion, the side of joint groove and the perpendicular side of the side of joint groove.

2. The square tube fitting of claim 1, wherein: the width of the notch of the U-shaped clamping groove is not smaller than the wall thickness of the first square tube.

3. The square tube fitting of claim 1, wherein: the width of the U-shaped open slot is not smaller than the width of the connecting piece.

4. The square tube fitting of claim 1, wherein: the screw is a set screw, the set screw passes through the screw through hole and is matched with the screw hole, and the tail end of the set screw is propped against the inner wall of the channel.

5. The square tube fitting of claim 1, wherein: the width between the left side surface and the right side surface of the flange end is equal to the side length of the first square tube.

6. The square tube fitting of claim 1, wherein: the inner wall of the channel is provided with an anti-skid groove which is matched with the bulge at the back of the connecting piece.

7. The square tube fitting of claim 1, wherein: and a decorative cover is arranged in the screw through hole.

8. The square tube fitting of claim 1, wherein: and a yielding groove is formed at the joint of the flange end and the plug end.

9. The square tube fitting of claim 1, wherein: the outer fringe on U type open slot top is equipped with the chamfer.