Five-axis steel pipe closed type rotating suite and frame connecting piece thereof

Abstract

The utility model discloses a five-axis steel pipe closed type rotating suite and a frame connecting piece thereof, and relates to the technical field of rigid pipe fitting connection. The problems that an existing steel pipe connector is complex in connection mode operation, insufficient in sealing and difficult in multi-direction connection are solved, the rotating kit is composed of a four-axis fixed pipe connector and a single-axis rotating connector, the four-axis fixed pipe connector comprises an X-axis port, a Y-axis port and a Z-axis port, the single-axis rotating connector can rotate by 360 degrees, and the four-axis fixed pipe connector and the single-axis rotating connector are connected with an annular sliding groove and a sliding ring in a matched mode through connecting pins. Sealing, dustproof and damping effects are achieved; beveled edges and threads are arranged at the ports, so that the steel pipe can be quickly assembled, and the connecting strength is improved by reinforcing ribs; the frame connecting piece is formed by assembling the rotating sleeve piece, a transverse rod, a vertical rod and a rotating rod, modular expansion can be carried out, and complex supporting requirements can be met. The problems that an existing suite is single in connection and prone to loosening and dust accumulation are solved, the suite is suitable for the fields of buildings, industrial equipment, traffic engineering and the like, and stability and flexibility are both considered.

Description

TECHNICAL FIELD

[0001] The utility model relates to rigid pipe fitting's connection technical field, concretely relates to a five -axis steel pipe closed -type rotating sleeve spare and frame connecting piece thereof. BACKGROUND

[0002] Pipe fitting support rotating fastener is a pipe fitting component for connecting pipe fittings, mainly used in pipe fitting support structures in the fields of building, industrial equipment, traffic engineering, etc., and its core function is to allow the pipe fitting to realize flexible rotation or angle adjustment at the connection point, thereby enhancing the adaptability and stability of the structure; it has good flexibility, can adjust any angle, adapts to complex structure requirements, and has high strength and durability, uses high-quality steel and anti-rust treatment and modular design, is convenient to install, reduces construction working hours and reduces labor costs.

[0003] Application status and existing problems of pipe fitting support rotating fastener.

[0004] In building engineering, rotating fasteners are mainly used for scaffold erection and formwork support systems, such as multi-angle connection of vertical rods 4-2 and horizontal rods 4-1, especially in complex terrain or structures, which can realize large-angle flexible turning and improve construction efficiency; in the field of general industrial equipment, rotating fasteners are mainly used for pipe fitting fixation of automatic production lines and assembly lines to meet the demand for high-precision mechanical connection; in addition, rotating fasteners are also widely used in transportation infrastructure construction, such as railways, bridges, wind power and photovoltaic engineering, for stable connection of support structures; and in some agricultural production scenarios, they are also used to build adjustable-angle plant supports, etc.

[0005] The market size of rotating fasteners is hundreds of billions of yuan, and is expected to continue to grow in the future, especially in the industrial field, and the application of new materials such as high-strength alloy steel and stainless steel has also improved the durability of the product; even so, the current rotating fasteners have some problems:

[0006] First of all, the application scenarios are relatively single, and the existing rotating fasteners can only install two pipe fittings, which are crossed with each other, and the included angle between them can be changed according to the demand to support supports of different widths and heights, which cannot meet the relatively complex support demand.

[0007] Secondly, the existing rotating fasteners have certain defects in structural design, and the rotating fasteners need to bear large alternating loads during use, especially the rotating fasteners of the existing structure basically include rotating seat, fixed cover plate, rivet, fixed bolt, nut, gasket, positioning device, adjusting device and other parts, the number of parts is large, the assembly is complex, and the fixed cover plate and the fixed bolt are connected and are prone to looseness under high-frequency vibration;

[0008] In addition, the two rotating seats are connected by rivets, but there are gaps between the rotating seats or between the rivets and the rotating seats, dust is easy to enter, causing fatigue peeling at the contact position, causing the raceway and the rolling body surface to peel off, causing vibration and noise.

[0009] Therefore, through the structural optimization improvement by technological upgrading, the safety and reliability of the rotating fastener can be further improved to meet the diversified needs of engineering construction. SUMMARY

[0010] In order to solve the problems of complex operation, insufficient sealing, and difficulty in multi-directional connection of the existing steel pipe connecting joint, the utility model provides a five-axis steel pipe closed rotary sleeve and a frame connecting piece, which combines a four-axis fixed seat with a rotary sleeve to realize fast assembly, reliable sealing, and multi-directional connection of the steel pipe, and improves the connection structure of the fixed seat and the rotary sleeve to greatly reduce the vibration of the rotary sleeve during work. At the same time, a dustproof structure is provided to prevent impurities and debris from entering the connection part, protect the contact part, and prolong the service life. On this basis, a frame connecting piece assembled using the above rotary sleeve is also provided to realize fast assembly and disassembly, ensure sufficient strength and stability, and provide a wide application prospect.

[0011] One of the purposes of the present application is to adopt the following technical scheme:

[0012] A five-axis steel pipe closed rotary sleeve, characterized in that it comprises a four-axis fixed pipe joint 1 and a single-axis rotary joint 2.

[0013] The four-axis fixed pipe joint 1 comprises a main body structure, which is provided with four connection ports, one port along the positive and negative directions of the X-axis, one port along the positive direction of the Y-axis, and one port along the positive direction of the Z-axis, and the inside of each port is in communication with each other.

[0014] Among them, the X-axis and Y-axis ports in the same plane are provided with fastening bolt holes 1-1 and matched bolts, and the inner walls of each port are provided with internal threads for matched connection with the external threads of the steel pipe outer wall; the outer side of the port is provided with a bolt mounting hole, and the bolt can be screwed into and tightly abut against the steel pipe outer wall; an inner convex reinforcing rib is arranged at the contact position of the port and the steel pipe.

[0015] A fixed connection section 1-2 is arranged at the negative direction of the Y-axis of the four-axis fixed pipe joint 1, a fixed connection hole 1-3 is arranged at the inner center position of the fixed connection section 1-2, and a connecting pin 1-4 is arranged coaxially connected with the opposite single-axis rotary joint 2.

[0016] The center of the fixed connection section 1-2 is provided with a fixed connection hole 1-3 with three steps, which communicates the inside of the four-axis fixed pipe joint 1, and the inner wall surface of which is sequentially provided with an outer edge section, an inner edge section and a main body section from inside to outside, which constitute the entire fixed connection hole 1-3, and the height ratio of each section is outer edge section:inner edge section:main body section=1:3:3; in addition, the outer edge section, the inner edge section and the main body section are all cylindrical, and the diameter ratio of the three sections from inside to outside is 5:4:3;

[0017] On the outer end surface of the fixed connection section 1-2, an annular sliding groove 1-5 is provided, which has the same center as the fixed connection hole 1-3 and is concave as a whole, the concave depth of the annular sliding groove 1-5 is less than the overall thickness of the fixed connection section 1-2, the outer diameter of the annular sliding groove 1-5 is greater than the diameter of the outer edge section of the fixed connection hole 1-3 and less than the outer diameter of the fixed connection section 1-2, and the inner diameter of the annular sliding groove 1-5 is greater than the diameter of the inner edge section of the fixed connection hole 1-3 and less than the diameter of the outer edge section of the fixed connection hole 1-3;

[0018] The main body of the single-axis rotary joint 2 is a hollow cylindrical sleeve, one side of which in contact with the four-axis fixed pipe joint 1 is provided with a movable connection section 2-1, and the pipe body of the hollow cylindrical sleeve is provided with oppositely arranged hollow circular table locking holes 2-2, the inner wall of which is provided with threads matched with locking screws;

[0019] The movable connection section 2-1 is symmetrically arranged with the fixed connection section 1-2, and the same shape and size structure is symmetrically arranged, including three table stages sequentially distributed from the inner wall surface of the single-axis rotary joint 2 to the outside, which constitute a movable connection hole 2-3, the axis of the movable connection hole 2-3 coincides with the axis of the fixed connection hole 1-3, and the movable connection section 2-1 can rotate at any angle with the coincident axis as the center; the contact surface of the movable connection section 2-1 is provided with an annular sliding ring 2-4 matched with the annular sliding groove 1-5 on the outer end surface of the fixed connection section 1-2, the thickness of the annular sliding ring 2-4 matches the depth of the annular sliding groove 1-5, and the dimensions are consistent with the corresponding dimensions of the annular sliding groove 1-5;

[0020] A connecting pin 1-4 is arranged in the movable connection hole 2-3 and the fixed connection hole 1-3, which is thin in the middle and thick at both ends, and the middle part is slightly cylindrical, and both ends are provided with step structures with the same shape as the fixed connection hole 1-3 and the movable connection hole 2-3, and the height of both ends does not exceed the inner wall surface of the four-axis fixed pipe joint 1 and the single-axis rotary joint 2, and the connecting pin 1-4 and the corresponding parts of the fixed connection hole 1-3 and the movable connection hole 2-3 are matched by clearance.

[0021] In order to improve the convenience of sleeving pipes, a whole-circle outwardly-inclined bevel is arranged on the inside of each port of the four-axis fixed pipe joint 1 and the single-axis rotary joint 2, the diameter of the port is increased, and the outwardly-inclined angle is 0°≤outwardly-inclined angle≤20°.

[0022] Another object of the present application is to provide a frame connector based on the above-mentioned five-axis steel pipe closed rotary sleeve assembly, characterized in that the frame connector comprises at least one frame unit, each frame unit comprising a rotary sleeve assembly 3, and a matched fixed rod and rotary rod 4-3; wherein the fixed rod comprises a horizontal rod 4-1 and a vertical rod 4-2 sleeved on the four-axis fixed pipe joint 1 in the rotary sleeve assembly 3; the horizontal rod 4-1 comprises two pipe fittings sleeved on the X-axis positive and negative port of the four-axis fixed pipe joint 1, and one pipe fitting sleeved on the Y-axis positive port; the vertical rod 4-2 is one pipe fitting sleeved on the Z-axis positive port; and the rotary rod 4-3 is one pipe fitting sleeved in the single-axis rotary joint 2.

[0023] Preferably, the rotary sleeve assembly 3 is added to assemble the frame unit into a frame connector; the extended horizontal rod 4-1 is connected at the X-axis port, the supported horizontal rod 4-1 is connected through the Y-axis port, and the vertical rod 4-2 is stacked through the Z-axis port to form a multi-layer structure. Beneficial effects

[0024] The five-axis steel pipe closed rotary sleeve assembly described in the present application has the characteristics of flexible and adjustable structure, the single-axis rotary joint 2 can rotate at any angle, and can adapt to the connection requirements of pipe fittings with different crossing angles; the four-axis fixed pipe joint 1 has high connection strength and stability; the single-axis rotary joint 2 and the four-axis fixed pipe joint 1 are easy to assemble, the bevel design on the inner side of the port increases the diameter, facilitates the quick insertion of the pipe, and improves the smoothness of the assembly; the connection pin 1-4 and the connection hole adopt clearance fit, which can reduce the entry of external impurities and prolong the service life; the frame structure unit described in the present application adopts a dynamic and static combined connection mode, which enhances the stability and adaptability of the frame structure, and has modularity and expansibility; a plurality of frame structure units can be quickly assembled into a rectangular frame, supporting flexible expansion, the crossing angle of the rotary rod 4-3 assembly can be adjusted, and it is suitable for building complex support structures; the mechanical properties of the frame structure unit are excellent, the rotary rod 4-3 can be adjusted according to the stress requirement, effectively dispersing the load and enhancing the overall stability; the rectangular layout of the horizontal rod 4-1 and the vertical rod 4-2 forms a rigid structure, improving the bending and torsional resistance of the frame. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a perspective structure of the rotary sleeve assembly.

[0026] Figure 2 is a schematic view of the internal structure of the rotary sleeve assembly.

[0027] Figure 3 is a perspective structure of the four-axis fixed pipe joint.

[0028] Figure 4is a perspective view of the single-axis rotary joint.

[0029] Figure 5 is a schematic view of the internal structure of the four-axis fixed pipe joint.

[0030] Figure 6 is a schematic view of the internal structure of the single-axis rotary joint.

[0031] Figure 7 is a schematic view of the structure of the frame unit.

[0032] Figure 8 is a schematic view of the structure of the frame connecting piece.

[0033] In the figure: four-axis fixed pipe joint 1, fastening bolt hole 1-1, fixed connecting section 1-2, fixed connecting hole 1-3, connecting pin 1-4, annular sliding groove 1-5, single-axis rotary joint 2, movable connecting section 2-1, locking hole 2-2, movable connecting hole 2-3, annular sliding ring 2-4, rotary sleeve 3, horizontal rod 4-1, vertical rod 4-2, rotating rod 4-3. DETAILED DESCRIPTION

[0034] The utility model is further described below in combination with the drawings and examples. EXAMPLE

[0035] As Figures 1-7 shown, the five-axis steel pipe closed rotary sleeve of the embodiment includes a four-axis fixed pipe joint 11 and a single-axis rotary joint 22, and the specific structure is as follows:

[0036] The four-axis fixed pipe joint 1 is provided with four connecting ports: X-axis positive and negative direction ports, Y-axis positive direction port, and Z-axis positive direction port, and the inside of each port is in communication with each other; the inner wall of the port is provided with an M20x1.5 internal thread, which is connected with the external thread of the steel pipe, the outer side of the port is provided with a φ12 bolt mounting hole, which is matched with an M10x25 fastening bolt; the contact part of the port and the steel pipe is provided with an internal convex reinforcing rib with a height of 2mm; the Y-axis negative direction port is provided with a fixed connecting section 1-2, which is internally provided with a fixed connecting hole 1-3, the hole depth is 30mm, the diameter is φ30mm, the fixed connecting hole 1-3 adopts a three-stage stepped structure: the outer edge section is φ25x5mm, the inner edge section is φ20x15mm, and the main body section is φ15x15mm; the outer end surface of the fixed connecting section 1-2 is provided with an annular sliding groove 1-5, the groove depth is 3mm, the outer edge diameter is φ40mm, and the inner edge diameter is φ35mm.

[0037] The main body of the single-axis rotary joint 2 is a hollow cylindrical sleeve with an outer diameter of φ50mm and a wall thickness of 3mm. The moving connection section 2-1 is provided with a three-stage stepped moving connection hole 2-3 that is symmetrical to the fixed connection section 1-2, and the size matches the fixed connection hole 1-3. The end face of the moving connection section 2-1 is provided with an annular slip ring 2-4 with a thickness of 3mm, an outer diameter of φ38mm, and an inner diameter of φ33mm. Two pairs of symmetrically distributed hollow frustum locking holes 2-222 are provided in the middle of the sleeve, with a hole diameter of φ8mm and a thread specification of M6×1.

[0038] Connecting pins 1-4 are made of Φ25mm×40mm carbon steel shafts, with stepped structures at both ends that match the fixed connecting holes 1-3 and the moving connecting holes 2-3, and the Φ20mm cylindrical section in the middle maintains a 0.05mm clearance fit with the hole wall.

[0039] In addition, a 15° outward bevel is provided on the inner side of each port, with a bevel depth of 2mm. Example

[0040] like Figures 1-8 As shown, this embodiment uses the frame unit to assemble the frame connector.

[0041] Basic frame unit: The X-axis port of the four-axis fixed pipe joint 1 connects to two horizontal steel pipes with a length of 1.5m; the Y-axis port connects to a longitudinal steel pipe with a length of 2m; the Z-axis port connects to a vertical steel pipe with a length of 3m; and the single-axis rotary joint 2 connects to an inclined support rod with a length of 2.5m.

[0042] Extended structure: By adding a rotating kit, it can be assembled into a three-dimensional frame structure; lateral extension, through the X-axis port to connect the extension steel pipe; longitudinal extension, through the Y-axis port to connect the support component; height extension, through the Z-axis port to stack multiple layers of structure; the rotating rod 4-3 can be adjusted in angle through a rotating joint, with a maximum rotation range of 360°.

[0043] step:

[0044] ① Pipe pretreatment: Machining M20×1.5 external threads with a length of 15mm on the ends of the steel pipe;

[0045] ② Assemble the four-axis fixed pipe joint 1: Screw the steel pipes into the corresponding ports to a depth of 12mm and tighten the M10 bolts;

[0046] ③ Connect the rotary joint: Insert the connecting pin 1-4 into the fixed connecting hole 1-3, align it with the stepped structure of the moving connecting section 2-1, and lock it in place; rotate the single-axis joint to the required angle and tighten the locking screw 22;

[0047] ④ Frame construction: Connect other pipes through the port extension, and adjust the angle of the rotating rod 4-3 from 0° to 180°.

Claims

1. A five-axis steel tube closed-type rotary sleeve assembly, characterized by, It comprises a four-axis fixed pipe joint (1) and a single-axis rotary joint (2); The four-axis fixed pipe joint (1) comprises a main body structure, which is provided with four connecting ports, one port along the positive direction of the X-axis and one port along the negative direction of the X-axis, one port along the positive direction of the Y-axis, and one port along the positive direction of the Z-axis, and the interiors of the ports are in communication with each other; The X-axis and Y-axis ports in the same plane are provided with fastening bolt holes (1-1) and matched bolts, and the inner walls of the ports are provided with internal threads for matched connection with the external threads of the outer wall of the steel pipe; the outer side of the port is provided with a bolt mounting hole, and the bolt can be screwed into and abut against the outer wall of the steel pipe; the inner convex reinforcing ribs are arranged at the contact part of the port and the steel pipe; A fixed connecting section (1-2) is arranged at the negative direction of the Y-axis of the four-axis fixed pipe joint (1), a fixed connecting hole (1-3) is arranged at the inner center position of the fixed connecting section (1-2), and a connecting pin (1-4) is arranged coaxially to connect the opposite single-axis rotary joint (2); The fixed connecting hole (1-3) arranged at the center of the fixed connecting section (1-2) has three steps, the fixed connecting hole (1-3) is in communication with the interior of the four-axis fixed pipe joint (1), and the outer edge section, the inner edge section and the main body section of the fixed connecting hole (1-3) are arranged in sequence from the inner wall surface to the outer wall surface, the three sections constitute the entire fixed connecting hole (1-3), and the height ratio of the sections is outer edge section:inner edge section:main body section=1:3:3; in addition, the outer edge section, the inner edge section and the main body section are all cylindrical, and the diameter ratio of the three sections from the inner to the outer is 5:4:3; An annular sliding groove (1-5) with the same center as the fixed connecting hole (1-3) and being entirely concave is arranged on the outer end surface of the fixed connecting section (1-2), the concave depth of the annular sliding groove (1-5) is less than the overall thickness of the fixed connecting section (1-2), the outer diameter of the annular sliding groove (1-5) is greater than the diameter of the outer edge section of the fixed connecting hole (1-3) and less than the outer diameter of the fixed connecting section (1-2), and the inner diameter of the annular sliding groove (1-5) is greater than the diameter of the inner edge section of the fixed connecting hole (1-3) and less than the outer edge section of the fixed connecting hole (1-3); The main body of the single-axis rotary joint (2) is a hollow cylindrical sleeve, and a dynamic connecting section (2-1) is arranged on the side in contact with the four-axis fixed pipe joint (1), and a hollow circular table locking hole (2-2) is arranged on the pipe body of the hollow cylindrical sleeve in opposite arrangement, and the inner wall is provided with threads matched with locking screws. The dynamic connection section (2-1) is symmetrical to the position of the fixed connection section (1-2), and symmetrical structures of the same shape and size are arranged, including three stages distributed in turn from the inner wall surface of the single-axis rotary joint (2) to the outside, and the three-stage structure forms a dynamic connection hole (2-3), the axis of the dynamic connection hole (2-3) coincides with the axis of the fixed connection hole (1-3), and the dynamic connection section (2-1) can rotate at any angle with the coincident axis as the center; An annular slip ring (2-4) matched with the annular slip groove (1-5) on the outer end surface of the fixed connection section (1-2) is arranged on the contact surface of the dynamic connection section (2-1) and the fixed connection section (1-2), the thickness of the annular slip ring (2-4) matches the depth of the annular slip groove (1-5), and the dimensions are consistent with the corresponding dimensions of the annular slip groove (1-5); An integrated connecting pin (1-4) is arranged in the dynamic connection hole (2-3) and the fixed connection hole (1-3), which is thick at both ends and thin in the middle, and the middle part is slightly cylindrical, both ends are provided with a stepped structure with the same shape as the fixed connection hole (1-3) and the dynamic connection hole (2-3), and the height of both ends does not exceed the inner wall surface of the four-axis fixed pipe joint (1) and the single-axis rotary joint (2), and the connecting pin (1-4) and the corresponding parts of the fixed connection hole (1-3) and the dynamic connection hole (2-3) are matched by clearance.

2. A closed rotational system for five-axis steel tube according to claim 1, characterized in that, A whole-circle outwardly-inclined bevel is arranged inside each port of the four-axis fixed pipe joint (1) and the single-axis rotary joint (2), the diameter of the port is increased, and the outwardly-inclined angle is 0°≤outwardly-inclined angle≤20°.

3. A frame connector assembled based on the five-axis steel tube closed rotary sleeve kit of claim 1 or 2, characterized in that, The frame connecting piece comprises at least one frame unit, each frame unit comprises a rotating sleeve (3), and a matched fixed rod and rotating rod (4-3); wherein the fixed rod comprises a horizontal rod (4-1) and a vertical rod (4-2) sleeved on the four-axis fixed pipe joint (1) in the rotating sleeve (3); the horizontal rod (4-1) comprises two pipe fittings sleeved on the X-axis positive and negative ports of the four-axis fixed pipe joint (1), and one pipe fitting sleeved on the Y-axis positive port; the vertical rod (4-2) is a pipe fitting sleeved on the Z-axis positive port; and the rotating rod (4-3) is a pipe fitting sleeved in the single-axis rotary joint (2).

4. The frame connection of claim 3, wherein, The rotating sleeve (3) is added, and the frame units are assembled into the frame connecting piece; the extended horizontal rod (4-1) is connected through the X-axis port, the supporting horizontal rod (4-1) is connected through the Y-axis port, and the vertical rod (4-2) is stacked through the Z-axis port to form a multi-layer structure.

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