CN117028378A

CN117028378A - Assembled square tube connecting piece

Info

Publication number: CN117028378A
Application number: CN202310997006.XA
Authority: CN
Inventors: 丁天武; 乐祥栋; 丁力; 杨凤; 夏争辉
Original assignee: Wuhan Chengyan Technology Co ltd
Current assignee: Wuhan Chengyan Technology Co ltd
Priority date: 2023-08-09
Filing date: 2023-08-09
Publication date: 2023-11-10

Abstract

The invention discloses an assembled square tube connecting piece. The pipe clamp comprises a pipe clamp structure formed by two L-shaped parts, a palm structure formed by two U-shaped parts and a pin shaft, wherein the L-shaped parts are used for fixing a square pipe hoop in a first direction through screws, the U-shaped parts are used for fixing the square pipe hoop in a second direction through screws, the L-shaped parts penetrate through the U-shaped parts in the second direction through the pin shaft, the L-shaped parts are connected with the square pipe together, and the first direction is perpendicular to the second direction. The invention realizes the combined connection of the square pipes with the structures of the same specification and different specifications, can also be used for assembling the structure frames with different shapes, can be prolonged according to the requirements, can be assembled by only two different parts, does not need welding or punching, and is convenient and quick to install and use.

Description

Assembled square tube connecting piece

Technical Field

The invention belongs to the technical field of steel structures and convenient non-welding assembly of square tubes, and particularly relates to an assembled square tube connecting piece.

Background

The square tube has the advantages of high strength and attractive shape, and is widely applied to the fields of industry, agriculture, military, and the like, such as equipment frames, frames in many scenes, trusses, industrial bearing frames and the like. These steel frames can use square tubes, and the connection mode between the square tubes usually adopts welding, and welding has many advantages, but also has some disadvantages: some environments severely disable fire; some circumstances require initiation of a firing sequence. The whole construction process from welding to coating is complex and is also limited by power supply voltage, power conditions and working sites. The implementation period is long, the professionality is strong, and due to the rapid development of economy, welding workers with good welding technology are fewer, and the welding quality is uneven. On-site welding also presents a noisy, environmental pollution and potential fire hazard. There are also flange connections that are installed off-site, with the connection being contemplated in advance and measured accurately. The manufacturing requirement is high, and the problems of long period and incapability of random installation exist.

Some common square pipe connectors in the market at present are small-size light-weight, are generally applied to places with low stress requirements, and are not suitable for being stressed independently but are stressed by a plurality of connectors in a combined way. The square pipe connecting piece is a product which is very demanding but not mature, and similar products and mature technologies are not seen in the market at present for a square pipe framework which is stressed in an industrial scene.

If patent CN26666145U provides a square pipe connecting piece and buckles, the jack catch is tightly buckled in the draw-in groove, and the junction has certain intensity bearing capacity, but the faying surface of jack catch and draw-in groove needs finish machining, and the contact is more and has the location suspicion. Because the square tubes of all manufacturers have different sizes, the assembly pretightening force is restrained asynchronously, the phenomenon of losing each other occurs, and the phenomenon that the restrained square tubes and the two connected anchor clamps cannot be locked simultaneously is shown. Even though local deformation is relied on to forcibly lock, there is no planar contact to obtain sufficient friction, only screw tightening. Therefore, the strength of the joint cannot be ensured, and the aim of reliable connection is not achieved. The scheme has higher cost, is not beneficial to mass production and is also not beneficial to wide popularization.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an assembled square pipe connecting piece. The existing welding and flange connection are overturned, and a third connection mode, namely an assembly type square pipe connection piece, is developed. The assembly of single group parts realizes reliable and stable connection, so that the joint has the strength bearing capacity matched with the square tube. The square tube can be suitable for various combination forms only by two different parts. And the assembly efficiency is high, the cost is low, the construction condition is not limited, the site assembly is convenient, and the installation of a technical threshold is avoided.

The technical scheme adopted by the invention is as follows: the utility model provides an assembled side's pipe connection spare, includes the palm structure and the round pin axle that two "L" shape parts are constituteed, two "U" shape parts are constituteed, "L" shape parts are used for passing through the screw with side's pipe staple bolt fixed in first direction, two "U" shape parts are used for passing through the screw with side's pipe staple bolt fixed in the second direction to pass "U" shape part, the "L" shape part is connected with side's pipe jointly through the round pin axle in the second direction, first direction is perpendicular with the second direction.

Further preferred structure, L shape part includes L shape pipe clamp skeleton, L shape pipe clamp skeleton up end and lower terminal surface are equipped with the connection boss respectively, offer a plurality of first round pin shaft holes on the connection boss, be connected with first docking flange about the connection boss both ends respectively, offer first screw via hole on the first docking flange, the L shape pipe clamp skeleton lateral surface that first docking flange corresponds offer with first screw via hole coaxial first hexagonal counter bore, two L shape pipe clamp skeleton is in the same place through first docking flange laminating and pass first hexagonal counter bore, first screw via hole and nut fixed connection through the screw and form rectangular frame structure.

In a further preferable structure, the edge of the first butt flange is provided with a flange reinforcing rib.

In a further preferred structure, the included angle between the plane of the first butt flange and the planes of the two parts of the L-shaped pipe clamp framework is 45 degrees.

In the technical scheme, the L-shaped part and the U-shaped part are symmetrical parts. The two L-shaped parts are symmetrically used to form a pipe clamp structure, and the two U-shaped parts are symmetrically used to form a palm structure. The pipe clamp structure hoop is installed on the square pipe to be connected through screws, the palm structure is installed on the end screw of the other section of square pipe, and the pipe clamp structure is connected with the palm structure through the pin shaft. In order to overcome the technical difficulty of the assembly tolerance precision of the palm structure and the pipe clamp structure and avoid the phenomenon of over-positioning, the joint of the palm structure and the two parts of the connecting pipe clamp structure adopts an avoidance method, so that the palm structure and the connecting pipe clamp structure do not need to be contacted, and only the first pin shaft hole is in clearance fit with the pin shaft. The pin shaft positioning technology is adopted to realize the shearing-resistant connection, so that the purpose of stable and reliable connection is achieved by overcoming shaking.

The flange reinforcing rib increases the strength of the connecting boss and the first butt flange, the connecting boss and the upper and lower first pin shaft holes of the L-shaped pipe clamping framework form a long pin shaft guide pipe, so that the pin shaft enhances the bending resistance of the pin shaft on the connecting boss, meanwhile, the tensile area is increased, the connecting strength of the connecting boss and the palm structure is finally improved, and the processing difficulty and the processing cost are reduced. Two L-shaped parts are symmetrically sleeved on the square tube. The screw passes through the first screw through hole and is locked and fixed with the nut in the first hexagonal counter bore, so that a group of pipe clamp structures are formed. The square tubes of different batches have certain difference in external dimensions, and the two symmetrical L-shaped parts are tightened by screws in the y direction until the external dimensions of certain specifications are different, so that the square tubes can be locked and restrained, and the square tubes are held tightly.

Further preferably, the U-shaped component comprises a connection supporting plate, a plurality of second pin shaft holes for being matched with the first pin shaft holes are formed on the connection supporting plate near one side face of the connection supporting plate, a second butt flange is connected to the other two symmetrical side faces of the connection supporting plate, a plurality of second hexagonal counter bores are formed in the second butt flange, second screw through holes along the plane direction of the second butt flange are formed in the second hexagonal counter bores, and at least one thread hole perpendicular to the plane of the second butt flange is formed in the second butt flange.

In a further preferable structure, a reinforcing rib is arranged on the connecting supporting plate close to the third side face, and the second pin shaft is positioned at the reinforcing rib.

In the technical scheme, two U-shaped parts are symmetrically sleeved at the end of the square tube, and screws penetrate through second screw through holes and are locked and fixed with nuts in second hexagonal counter bores, so that a palm structure is formed, different batches of square tubes have certain difference in external dimensions, and the square tubes need to be locked in y ₂ And the z direction has a certain adjustment amount, and can accommodate the accumulated errors of installation and production. A certain gap is reserved between the two symmetrical U-shaped parts after the two U-shaped parts are buckled, and the square pipe is locked by the screw along the z direction. y is ₂ A certain gap is arranged in the direction, a set screw is arranged in the thread hole, and the direction y is the ₂ The direction is locked, so that the square tube is restrained and held tightly. The problem that the assembly pre-tightening constraint is asynchronous, the constrained square pipe cannot be locked with two parts of the pipe clamp structure simultaneously is solved, the square pipe can be completely locked by a single-group connecting piece, the problem that the structural strength is affected due to the fact that clearance shake can not occur is solved, and the aim of reliably connecting the square pipes is achieved.

The second pin shaft hole on the U-shaped component is aligned with the first pin shaft hole on the L-shaped component, the pin shaft passes through the second pin shaft hole and the first pin shaft hole at the same time, and the pin shaft is tightly locked in the pin shaft hole. The L-shaped component and the U-shaped component are connected together, the pin shaft at the joint is mainly subjected to shearing force in the x direction, the shearing resistance of the pin shaft is very strong, and the stress at the joint is uniformly dispersed to the periphery due to interference fit of the pin shaft and the pin shaft hole. The joint boss of the U-shaped part and the joint supporting plate of the L-shaped part are assembled and bordered by adopting an avoidance design. Mainly overcomes the excessive positioning of the assembly relation and the high requirements of the machining precision and the tolerance fit relation.

The invention relates to a connecting part for assembling a framework by square pipes. The structure combination connection of the square pipes with the same specification and different specifications is realized, and the connection of the structure frames with different purposes can also be realized. The assembled square pipe connecting piece is used for low-noise environment-friendly operation, welding and punching are not needed, blanking is carried out according to the structural size, a clamp structure and screws are only needed to be installed on a connected square pipe, a palm structure is installed on the end screw of the other section of square pipe, the clamp structure and the palm structure are connected through a pin shaft, and the palm structure can be connected in four directions of the pipe clamp structure on the square pipe.

The palm structure formed by locking the two U-shaped parts and the pipe clamp structure formed by locking the two L-shaped parts can be assembled and combined, and can be used for assembling structural frames with different shapes.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention, a cross-sectional view at A-A, and a partially enlarged schematic illustration;

FIG. 3 is a schematic diagram of the connection structure between the square tube and the invention;

FIG. 4 is a schematic view of a pipe clamp according to the present invention;

FIG. 5 is a schematic diagram of a palm structure of the present invention;

FIG. 6 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 7 is a schematic view of the structure of embodiment 3 of the present invention;

FIG. 8 is a schematic view of the structure of embodiment 4 of the present invention;

FIG. 9 is a schematic diagram of the structure of embodiment 5 of the present invention;

FIG. 10 is a schematic view of the structure of embodiment 6 of the present invention;

FIG. 11 is a schematic view of a structure of embodiment 7 of the present invention;

fig. 12 is a schematic structural diagram of embodiment 8 of the present invention.

In the figure, 1- "L" -shaped members; 11-connecting bosses; 12-L-shaped pipe clamp frameworks; 13-a first docking flange; 14-flange reinforcing ribs; 15-a first screw via; 16-a first pin bore; 17-a first hexagonal counterbore; 2- "U" -shaped parts; 21-connecting stay plates; 22-a second docking flange; 23-reinforcing ribs; 24-second screw vias; 25-a second pin bore; 26-thread holes; 27-a second hexagonal counter bore; 3-pipe clamp structure; 4-palm structure; 5-square tube; and 6, a pin shaft.

Detailed Description

The invention will now be described in further detail with reference to the drawings and specific examples, which are given for clarity of understanding and are not to be construed as limiting the invention.

As shown in fig. 1-3, the pipe clamp comprises a pipe clamp structure 3 formed by two 'L' -shaped parts 1, a palm structure 4 formed by two 'U' -shaped parts 2 and a pin shaft 6, wherein the two 'L' -shaped parts 1 are used for fixing a square pipe 5 in a first direction through screws, the two 'U' -shaped parts 2 are used for fixing the square pipe 5 in a second direction through screws, the pin shaft 6 passes through the 'U' -shaped parts in the second direction, the 'L' -shaped parts are connected with the square pipe 5 together, and the first direction is perpendicular to the second direction.

As shown in fig. 4, the "L" shaped component 1 includes an L-shaped pipe clamp frame 12, the upper end face and the lower end face of the L-shaped pipe clamp frame 12 are respectively provided with a connection boss 11, the connection boss 11 is provided with a plurality of first pin holes 16, the two ends of the connection boss 11 are respectively connected with a first butt flange 13 up and down, the first butt flange 13 is provided with a first screw via hole 15, the outer side face of the L-shaped pipe clamp frame 12 corresponding to the first butt flange 13 is provided with a first hexagonal counter bore 17 coaxial with the first screw via hole 15, and the two L-shaped pipe clamp frames 12 are attached together through the first butt flange 13 and pass through the first hexagonal counter bore 17, the first screw via hole 15 and the nut to be fixedly connected to form a rectangular frame structure.

The edge of the first butt flange 13 is provided with a flange reinforcing rib 14.

The plane of the first butt flange 13 forms an included angle of 45 degrees with the planes of the two parts of the L-shaped pipe clamp framework 12.

As shown in fig. 5, the "U" shaped member 2 includes a connection supporting plate 21, a plurality of second pin holes 25 for matching with the first pin holes 16 are formed on a side surface of the connection supporting plate 21, the other two symmetrical side surfaces of the connection supporting plate 21 are connected with a second butt flange 22, a plurality of second hexagonal counter bores 27 are formed on the second butt flange 22, a second screw through hole 24 along the plane direction of the second butt flange 22 is formed in the second hexagonal counter bore 27, and at least one screw thread hole 26 perpendicular to the plane of the second butt flange 22 is formed on the second butt flange 22.

The connecting stay plate 21 is provided with a reinforcing rib 23 near the third side surface, and the second pin shaft hole 25 is positioned at the reinforcing rib 23.

The "L" shaped part 1 and the "U" shaped part 2 of the present invention are symmetrical pieces. Two "L" shaped members are used symmetrically to form the tube clamp structure 3 and two "U" shaped members are used symmetrically to form the palm structure 4.

According to the invention, the pipe clamp structure 3 is installed on the square pipe 5 to be connected by using the screw, the palm structure 4 is installed on the end screw of the other section of square pipe 5, and the pipe clamp structure 3 is connected with the palm structure 4 through the pin shaft 6. In order to overcome the technical difficulty of the assembly tolerance precision of the palm structure 4 and the pipe clamp structure 3 and avoid the phenomenon of over-positioning, the joint of the palm structure 4 and the two parts of the connecting pipe clamp structure 3 adopts an avoiding method to avoid contact, and only the first pin shaft hole 16 is in clearance fit with the pin shaft 6. The pin shaft positioning technology is adopted to realize the shearing-resistant connection, so that the purpose of stable and reliable connection is achieved by overcoming shaking.

The flange reinforcing ribs 14 increase the strength of the connecting boss 11 and the first butt flange 13, the connecting boss 11 and the upper and lower first pin shaft holes 16 of the L-shaped pipe clamp frame 12 form a long pin shaft guide pipe, so that the pin shaft 6 enhances the bending resistance of the pin shaft 6 on the connecting boss, meanwhile, the tensile area is increased, the connection strength of the connecting boss 11 and the palm structure 4 is finally improved, and the processing difficulty and the processing cost are reduced. Two L-shaped parts 1 are symmetrically sleeved on a square pipe 5. The screws pass through the first screw through holes 15 and are locked and fixed with nuts in the first hexagonal counter bores 17, so that a group of pipe clamp structures 3 is formed. The square tubes of different batches have certain difference in external dimensions, and two symmetrical L-shaped parts are tightened by screws in the y direction (shown in figure 3) until the certain specification external dimensions can be locked and restrained, so that the square tubes 5 are held tightly.

Two U-shaped parts 2 are symmetrically sleeved at the end of a square tube 5, and screws penetrate through second screw through holes 24 and are locked and fixed with nuts in second hexagonal counter bores 27, so that a palm structure 4 is formed, the square tubes in different batches have certain difference in external dimensions, and the square tubes need to be locked in y ₂ There is some amount of adjustment in the z direction (shown in fig. 3) to accommodate the cumulative errors of installation and production. A certain gap is reserved between the two symmetrical U-shaped parts 2 after being buckled, and a screw locks the square tube along the z direction. y is ₂ With a certain clearance in direction passing through the thread holes 26Installing a set screw in the direction y ₂ The direction is locked, so that the square tube 5 is restrained and held tightly. The problem that the assembly pre-tightening constraint is asynchronous, the constrained square pipe 5 and two parts of the pipe clamp structure 4 cannot be locked simultaneously is solved, the square pipe can be completely locked by a single-group connecting piece, the problem that the structural strength is affected due to the fact that clearance shake can not occur is solved, and the aim of reliably connecting the square pipes is achieved.

The second pin hole 25 on the "U" shaped member 2 is aligned with the first pin hole 16 on the "L" shaped member 1, the pin passing through both the second pin hole 25 and the first pin hole 16, the pin being tightly locked in the pin hole. The L-shaped part 1 and the U-shaped part 2 are connected together, the pin shaft 6 at the joint mainly bears shearing force in the x direction, the shearing resistance of the pin shaft 6 is very strong, and the stress at the joint is uniformly dispersed to the periphery due to interference fit of the pin shaft and the pin shaft hole. The joint boss 11 of the U-shaped part 2 and the joint supporting plate 21 of the L-shaped part 1 are assembled and bordered by adopting an avoidance design as shown in figure 2. Mainly overcomes the excessive positioning of the assembly relation and the high requirements of the machining precision and the tolerance fit relation.

The assembled square pipe connecting piece can realize various connecting modes of the square pipe 5:

example 1: when a pipe clamp structure 3 and a bottom plate are selected for matching and assembling, a square pipe 5 is fixed, and a column fixing structure is formed.

Example 2: when a pipe clamp structure 3 and a palm structure 4 are selected for matching and assembling, two square pipes 5 are assembled as shown in fig. 6 to form a two-way structure.

Example 3: when a pipe clamp structure 3 and a palm structure 4 are selected for matching and assembling, two square pipes 5 are assembled as shown in fig. 7 to form a plane tee structure.

Example 4: when two opposite side palm structures 4 and one pipe clamp structure 3 are selected for matching and assembling, three square pipes 5 are assembled as shown in fig. 8 to form a planar four-way structure.

Example 5: when two adjacent palm structures 4 are selected to be matched and assembled with one pipe clamp structure 3, three square pipes are assembled as shown in fig. 9, so that a three-dimensional tee structure is formed.

Example 6: when two adjacent palm structures 4 and one pipe clamp structure 3 are selected for matching and assembling, three square pipes 5 are assembled as shown in fig. 10, so that a three-dimensional four-way structure is formed.

Example 7: when three adjacent palm structures 4 are selected to be assembled with one pipe clamp structure 3, four square pipes 5 are assembled as shown in fig. 11 to form a three-dimensional five-way structure.

Example 8: when four palm structures 4 are selected to be assembled with one pipe clamp structure 3, five square pipes 5 are assembled as shown in fig. 12, so that a three-dimensional six-way structure is formed.

What is not described in detail in this specification is prior art known to those skilled in the art.

Claims

1. An assembled side's pipe connection spare, its characterized in that: the pipe clamp comprises a pipe clamp structure (3) formed by two L-shaped components (1), a palm structure (4) formed by two U-shaped components (2) and a pin shaft (6), wherein two L-shaped components (1) are used for fixing square pipes (5) in a first direction through screws, two U-shaped components (2) are used for fixing the square pipes (5) in a second direction through screws, the pin shaft (6) penetrates through the U-shaped components in the second direction, the L-shaped components are connected with the square pipes (5) together, and the first direction is perpendicular to the second direction.

2. The fabricated square tube connection of claim 1, wherein: the L-shaped component (1) comprises an L-shaped pipe clamping framework (12), connecting bosses (11) are respectively arranged on the upper end face and the lower end face of the L-shaped pipe clamping framework (12), a plurality of first pin shaft holes (16) are formed in the connecting bosses (11), first butt joint flanges (13) are respectively connected to the two ends of the connecting bosses (11) up and down, first screw through holes (15) are formed in the first butt joint flanges (13), first hexagonal counter bores (17) coaxial with the first screw through holes (15) are formed in the outer side face of the L-shaped pipe clamping framework (12) corresponding to the first butt joint flanges (13), and the two L-shaped pipe clamping frameworks (12) are attached together through the first butt joint flanges (13) and penetrate through the first hexagonal counter bores (17), the first screw through holes (15) and nuts to be fixedly connected to form a rectangular frame structure.

3. The fabricated square tube connection of claim 2, wherein: the edge of the first butt flange (13) is provided with a flange reinforcing rib (14).

4. The fabricated square tube connection of claim 2, wherein: the included angle between the plane of the first butt flange (13) and the planes of the two parts of the L-shaped pipe clamp framework (12) is 45 degrees.

5. The fabricated square tube connection of claim 2, wherein: the U-shaped component (2) comprises a connecting supporting plate (21), a plurality of second pin shaft holes (25) which are used for being matched with the first pin shaft holes (16) are formed on one side surface of the connecting supporting plate (21), a second butt joint flange (22) is connected to the other two symmetrical side surfaces of the connecting supporting plate (21), a plurality of second hexagonal counter bores (27) are formed in the second butt joint flange (22), second screw through holes (24) which are along the direction of the plane where the second butt joint flange (22) is located are formed in the second hexagonal counter bores (27), and at least one thread hole (26) which is perpendicular to the plane where the second butt joint flange (22) is located is formed in the second butt joint flange (22).

6. The fabricated square tube connection of claim 5, wherein: a reinforcing rib (23) is arranged on the connecting supporting plate (21) close to one side face of the connecting supporting plate, and the second pin shaft hole (25) is located at the reinforcing rib (23).