Steel pipe fastener

Abstract

The utility model relates to the field of building equipment, and discloses a steel pipe fastener. The steel pipe fastener comprises a first clamping piece, a second clamping piece and a locking assembly, the first clamping piece is rotationally matched with the second clamping piece, the first clamping piece has a first state locked with the second clamping piece and a second state unlocked with the second clamping piece, in the first state, a steel pipe can be clamped by the first clamping piece and the second clamping piece, and in the second state, the steel pipe can be clamped by the second clamping piece. In the second state, the first clamping piece can rotate relative to the second clamping piece, and an opening for taking and placing the steel pipe is formed between the first clamping piece and the second clamping piece; the locking assembly comprises a locking groove and a locking piece, the locking groove is formed in the first clamping piece, the locking piece is movably arranged on the second clamping piece, in the first state, the locking piece is connected with the locking groove in a clamped mode, and in the second state, the locking piece is disengaged from the locking groove. According to the steel pipe fastener, the steps of mounting and dismounting the steel pipe are simplified, the steel pipe fastener is not prone to loosening after being connected with the steel pipe, and parts of the steel pipe fastener are not prone to being lost.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction equipment, and relates to, in particular to, a steel pipe fastener. Background Art

[0002] A fastener generally refers to an intermediate connecting part for connecting two components. In construction projects, it is mostly used for fixing steel pipe scaffolds and is an important connecting element in the construction field, with important application value. When connecting steel pipes with existing fasteners, the ends of two steel pipes are respectively clamped into both ends of the fastener, and then the bolts on the fastener are tightened to firmly connect the two steel pipes together.

[0003] When using existing fasteners to connect steel pipes, the process of tightening the bolts is cumbersome, increasing the installation and disassembly time of the fasteners. Moreover, during use, the bolts are prone to falling off the fasteners due to vibration, causing the connected steel pipes to become loose and posing a safety hazard. In addition, the bolts and the fasteners are of a split structure and are easy to lose.

[0004] Therefore, there is an urgent need for a steel pipe fastener to solve the above problems. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a steel pipe fastener, which simplifies the installation and disassembly steps of the steel pipe on the steel pipe fastener, and the steel pipe is not prone to looseness after being connected with the steel pipe fastener, and the components of the steel pipe fastener are not easy to lose.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A steel pipe fastener is provided, including:

[0008] A first clamping member and a second clamping member, the first clamping member is rotationally matched with the second clamping member. The first clamping member has a first state of locking with the second clamping member and a second state of unlocking from the second clamping member. In the first state, the first clamping member and the second clamping member enclose to form an installation hole through which a steel pipe can pass and be clamped by the first clamping member and the second clamping member. In the second state, the first clamping member can rotate relative to the second clamping member and form an opening for taking and placing the steel pipe with the second clamping member;

[0009] A locking assembly, including a locking groove and a locking member. The locking groove is arranged on the first clamping member, and the locking member is movably arranged on the second clamping member. In the first state, the locking member is clamped with the locking groove, and in the second state, the locking member disengages from the locking groove.

[0010] Optionally, the steel pipe fastener further includes a linkage member disposed on the second clamping member, and the linkage member can rotate around the extending direction of the steel pipe. The locking member is movably disposed on the linkage member along its extending direction and is rotatably connected to the linkage member. When the linkage member is driven to rotate, the linkage member can drive the locking member to rotate and move circumferentially along the steel pipe, so that the locking member is engaged or disengaged with the locking groove.

[0011] Optionally, the steel pipe fastener further includes an elastic limiting member disposed on the second clamping member. A movable pushing portion is provided on the elastic limiting member. The pushing portion has an avoiding position for avoiding the linkage member and a limiting position for engaging with the linkage member. When the linkage member rotates to contact the pushing portion, it can push the pushing portion to deform and move to the avoiding position. When the linkage member rotates to disengage from the pushing portion, the elastic limiting member can automatically move to the limiting position under the action of elastic force.

[0012] Optionally, the steel pipe fastener further includes an adjusting member disposed on the linkage member. The adjusting member is sleeved on the locking member and is in threaded cooperation with the locking member.

[0013] Optionally, an anti-disengagement member is provided at the end of the locking member connected to the linkage member, and the anti-disengagement member is configured to prevent the locking member from disengaging from the linkage member.

[0014] Optionally, the steel pipe fastener further includes a connecting ear plate disposed on the second clamping member. A first rotating shaft is passed through the connecting ear plate, and the first rotating shaft is passed through the linkage member and is in rotational cooperation with the linkage member.

[0015] Optionally, the steel pipe fastener further includes a second rotating shaft disposed on the linkage member. A connecting member is sleeved on the second rotating shaft, and the connecting member is in rotational cooperation with the second rotating shaft. The first end of the locking member movably passes through the connecting member along its extending direction.

[0016] Optionally, the connecting member is provided with a first through hole and a second through hole. The first through hole penetrates the connecting member along the extending direction of the steel pipe, and the second through hole penetrates the connecting member along the extending direction of the locking member. The second rotating shaft passes through the first through hole and is in rotational cooperation with the first through hole, and the locking member passes through the second through hole and is in rotational cooperation with the second through hole.

[0017] Optionally, the steel pipe fastener further includes a first connecting plate, a second connecting plate and a third rotating shaft. The first connecting plate is fixedly connected to the first clamping member, the second connecting plate is fixedly connected to the second clamping member, and both the first connecting plate and the second connecting plate are in rotational cooperation with the third rotating shaft.

[0018] Optionally, the first connecting plate is provided with a first rotating groove extending along the axial direction of the third rotating shaft, and the second connecting plate is provided with a second rotating groove extending along the axial direction of the third rotating shaft. The third rotating shaft sequentially passes through the first rotating groove and the second rotating groove and is in rotational cooperation with the first rotating groove and the second rotating groove.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] The present utility model provides a steel pipe fastener. The locking member can lock the first clamping member and the second clamping member in the first state by being clamped with the locking groove, so that the steel pipe passing through the mounting hole can be in close contact with the first clamping member and the second clamping member. That is, the locked first clamping member and the second clamping member can clamp the steel pipe, preventing the steel pipe from moving relative to the steel pipe fastener, which is convenient for connecting the steel pipe to other structures. When the locking member moves to disengage from the locking groove, the first clamping member and the second clamping member are unlocked. The first clamping member can rotate relative to the second clamping member to form an opening, which not only releases the clamping force on the steel pipe but also allows the steel pipe to be installed on or removed from the steel pipe fastener through the opening. Compared with the existing fasteners, the steel pipe fastener provided by the present utility model can lock and unlock the first clamping ring and the second clamping ring by moving the locking member to clamp or separate the locking member from the locking groove, so as to install or disassemble the steel pipe on the steel pipe fastener. The operation is convenient and fast, improving the efficiency of steel pipe connection and fixation. Moreover, the locking groove and the locking member will not fall off the first clamping member or the second clamping member, and the locking member is not likely to loosen after being clamped with the locking groove, improving the practicality of the steel pipe fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the steel pipe fastener provided by the present utility model;

[0022] Figure 2 is an exploded view of the locking assembly of the steel pipe fastener provided by the present utility model;

[0023] Figure 3 is a schematic structural diagram of the connecting member and the second rotating shaft of the steel pipe fastener provided by the present utility model.

[0024] Wherein:

[0025] 1. First clamping member;

[0026] 2. Second clamping member; 21. Connecting ear plate; 22. First rotating shaft; 23. Extension plate;

[0027] 3. Locking assembly; 31. Locking member; 311. Locking ring; 312. Screw part; 32. Locking plate; 321. Locking groove; 33. Linking member; 34. Elastic limiting member; 341. Pushing part; 342. Limiting groove; 35. Adjusting member; 36. Anti-detachment member; 37. Second rotating shaft; 38. Connecting member; 381. Second through hole;

[0028] 4. Mounting plate;

[0029] 51. First connecting plate; 52. Second connecting plate; 53. Third rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] It should be understood that in the description of the present utility model, the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0031] It should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "set", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0032] The technical solution of the present utility model will be further described below with reference to the drawings and through specific embodiments.

[0033] As Figures 1 to 3 shown, this embodiment provides a steel pipe fastener, which simplifies the installation and disassembly steps of the steel pipe on the steel pipe fastener, and it is not easy to loosen after the steel pipe fastener is connected to the steel pipe, and the parts of the steel pipe fastener are not easy to be lost.

[0034] Referring to Figure 1 and Figure 2 , the steel pipe fastener includes a first clamping member 1, a second clamping member 2 and a locking assembly 3. The first clamping member 1 is rotationally matched with the second clamping member 2. The first clamping member 1 has a first state of locking with the second clamping member 2 and a second state of unlocking with the second clamping member 2. In the first state, the first clamping member 1 and the second clamping member 2 enclose to form an installation hole through which the steel pipe can pass and be clamped by the first clamping member 1 and the second clamping member 2. In the second state, the first clamping member 1 can rotate relative to the second clamping member 2 and form an opening for taking and placing the steel pipe between it and the second clamping member 2. The locking assembly 3 includes a locking groove 321 and a locking member 31. The locking groove 321 is provided on the first clamping member 1, and the locking member 31 is movably arranged on the second clamping member 2. In the first state, the locking member 31 is engaged with the locking groove 321, and in the second state, the locking member 31 disengages from the locking groove 321.

[0035] The steel pipe fastener provided in this embodiment can lock the first clamping member 1 and the second clamping member 2 in the first state by the locking member 31 being clamped with the locking groove 321, so that the steel pipe passing through the mounting hole can be in close contact with the first clamping member 1 and the second clamping member 2. That is, the locked first clamping member 1 and the second clamping member 2 can clamp the steel pipe, preventing relative movement between the steel pipe and the steel pipe fastener, which facilitates the connection of the steel pipe to other structures. When the locking member 31 moves away from the locking groove 321, the first clamping member 1 and the second clamping member 2 are unlocked. The first clamping member 1 can rotate relative to the second clamping member 2 to form an opening, which not only releases the clamping of the steel pipe but also allows the steel pipe to be installed on or removed from the steel pipe fastener through the opening. Compared with existing fasteners, the steel pipe fastener provided by the present utility model can lock and unlock the first clamping ring and the second clamping ring by moving the locking member 31 to engage or disengage the locking member 31 with the locking groove 321, so as to install or disassemble the steel pipe on the steel pipe fastener. The operation is convenient and fast, improving the efficiency of steel pipe connection and fixation. Moreover, the locking groove 321 and the locking member 31 will not fall off the first clamping member 1 or the second clamping member 2, and it is not easy to loosen after the locking member 31 is clamped with the locking groove 321, improving the practicability of the steel pipe fastener.

[0036] Specifically, referring to Figure 1 and Figure 2 , separate the locking member 31 from the locking groove 321, drive the first clamping member 1 and / or the second clamping member 2 to rotate away from each other to form an opening, and place the steel pipe between the first clamping member 1 and the second clamping member 2 through the opening. Subsequently, drive the first clamping member 1 and / or the second clamping member 2 to rotate away from each other until the opening is closed, then drive the locking member 31 to move until the locking member 31 is clamped with the locking groove 321, locking the first clamping member 1 and the second clamping member 2. The first clamping member 1 cannot rotate relative to the second clamping member 2 and can cooperate to clamp the steel pipe. At this time, there is no relative movement between the steel pipe fastener and the steel pipe, and the steel pipe fastener can stably connect the steel pipe to other structures.

[0037] In this embodiment, the steel pipe is a square steel pipe, and the cross-sectional shapes of the first clamping member 1 and the second clamping member 2 are both C-shaped with right angles. In other embodiments, the steel pipe is a round steel pipe, and the cross-sectional shapes of the first clamping member 1 and the second clamping member 2 are both semi-circular.

[0038] Further, referring to Figure 1 and Figure 2 , a locking ring 311 is provided at one end of the locking member 31 connected to the locking groove 321. The locking ring 311 can be embedded in the locking groove 321 and hook the groove wall of the locking groove 321, thereby realizing the clamping of the locking member 31 with the locking groove 321.

[0039] Further, referring to Figure 1, a mounting plate 4 is provided on the first clamping member 1 and / or the second clamping member 2, and a connection hole is provided on the mounting plate 4 to connect the steel pipe fastener to other structures such as steel cables.

[0040] In this embodiment, referring to Figure 1 and Figure 2 , the locking assembly 3 further includes a locking plate 32 fixedly connected to the first clamping member 1. One end of the locking plate 32 is bent to form a locking groove 321, and the locking groove 321 is recessed in the direction close to the second clamping member 2.

[0041] Optionally, referring to Figure 1 and Figure 2 , the steel pipe fastener further includes a linkage member 33 provided on the second clamping member 2, and the linkage member 33 can rotate around the extension direction of the steel pipe ( Figure 1 the vertical direction in

[0042] Specifically, referring to Figure 1 and Figure 2When locking the first clamping member 1 and the second clamping member 2, when the first clamping member 1 and the second clamping member 2 are rotated to close the opening, the linkage member 33 is driven to rotate forward, and the linkage member 33 drives the locking member 31 to move along the circumference of the steel pipe toward the locking groove 321 until the locking ring 311 of the first locking groove 321 is embedded in the locking groove 321; then, the linkage member 33 is driven to rotate reversely, and the linkage member 33 drives the locking member 31 to move along the circumference of the steel pipe toward the direction away from the locking groove 321, and the locking member 31 embedded in the locking groove 321 gradually contacts the locking groove 321 and pushes against each other, completing the clamping connection between the locking member 31 and the locking groove 321. At the same time, the locking member 31 can rotate relative to the linkage member 33 under the action of the thrust, so that the locking member 31 can always be located in the locking groove 321 when the linkage member 33 rotates reversely. When the first clamping member 1 and the second clamping member 2 need to be unlocked, the linkage member 33 is driven to rotate forward, and the locking ring 311 gradually loosens its contact with the locking groove 321 and is separated from the locking groove 321 .

[0043] Exemplarily, the linkage member 33 is a U-shaped structure, one end of the locking member 31 is located in the U-shaped linkage member 33 , and the other end extends out of the linkage member 33 , and the locking ring 311 is disposed at the other end of the locking member 31 .

[0044] Optionally, see Figure 1 and Figure 2 The steel pipe fastener also includes an elastic limiting member 34 arranged on the second clamping member 2, and a movable pushing portion 341 is arranged on the elastic limiting member 34. The pushing portion 341 has an avoidance position for avoiding the linkage member 33 and a limiting position abutting against the linkage member 33. When the linkage member 33 rotates to contact the pushing portion 341, it can push the pushing portion 341 to deform and move to the avoidance position. When the linkage member 33 rotates to disengage from the pushing portion 341, the pushing portion 341 can automatically move to the limiting position under the action of elastic force. The abutment between the push portion 341 and the linkage member 33 can prevent the staff from accidentally touching the linkage member 33 and causing the linkage member 33 to rotate, thereby affecting the clamping effect of the locking member 31 and the locking groove 321; the push portion 341 is elastic, so that the push portion 341 can automatically move from the avoidance position to the limit position, and when the linkage member 33 is driven to rotate, the linkage member 33 can more easily push the push portion 341 in a direction to move away from the push portion 341 and release the limit.

[0045] In this embodiment, refer to Figure 1 and Figure 2 The elastic limiting member 34 is also provided with a limiting groove 342 . When in the limiting position, the linkage member 33 is clamped in the limiting groove 342 .

[0046] Exemplarily, the elastic limiting member 34 is made of an elastic steel sheet, and the pushing portion 341 is a pushing inclined surface inclined in a direction approaching the second clamping member 2 .

[0047] Optionally, seeFigure 1 and Figure 2 The steel pipe fastener further includes an adjusting member 35 disposed on the linkage member 33. The adjusting member 35 is sleeved on the locking member 31 and is in threaded cooperation with the locking member 31 to adjust the position of the locking member 31 on the linkage member 33. Moreover, the adjusting member 35 and the locking member 31 are threadedly connected, which is more convenient for precisely controlling the position of the locking member 31 to accurately ensure the tightness of the connection between the locking member 31 and the locking groove 321.

[0048] In this embodiment, referring to Figure 1 and Figure 2 the locking member 31 includes a screw rod portion 312 provided with threads, and the adjusting member 35 is provided with a threaded hole. The screw rod portion 312 passes through the threaded hole and is in threaded cooperation with the threaded hole.

[0049] Exemplarily, the adjusting member 35 is a nut.

[0050] Optionally, referring to Figure 1 and Figure 2 a retaining member 36 is provided at an end of the locking member 31 connected to the linkage member 33. The retaining member 36 is configured to prevent the locking member 31 from detaching from the linkage member 33, effectively avoiding the loss of the locking member 31.

[0051] In this embodiment, referring to Figure 1 and Figure 2 the retaining member 36 is located on a side of the adjusting member 35 away from the locking ring 311. When the locking member 31 moves along its extending direction, the retaining member 36 can abut against the adjusting member 35 to prevent the locking member 31 from detaching from the linkage member 33.

[0052] Exemplarily, the retaining member 36 is a ring with a cross-sectional dimension larger than that of the screw rod portion 312 and the threaded hole, so that when the locking member 31 moves, the retaining member 36 cannot pass through the threaded ring and detach from the adjusting member 35.

[0053] Optionally, referring to Figure 1 and Figure 2 the steel pipe fastener further includes a connecting ear plate 21 provided on the second clamping member 2. A first rotating shaft 22 is passed through the connecting ear plate 21, and the first rotating shaft 22 passes through the linkage member 33 and is in rotational cooperation with the linkage member 33, so that the linkage member 33 can rotate relative to the second clamping member 2.

[0054] In this embodiment, referring to Figure 1 and Figure 2 the linkage member 33 is of a U-shaped structure, and two connecting ear plates 21 are provided on the second clamping member 2. The two connecting ear plates 21 are respectively connected to the two ends of the U-shaped linkage member 33 in a one-to-one correspondence to ensure the stability of the installation of the linkage member 33 on the second clamping member 2, and at the same time, it can also avoid affecting the movement and rotation of the locking member 31.

[0055] Optionally, refer to Figure 2 and Figure 3 , the steel pipe fastener further includes a second rotating shaft 37 provided on the linkage 33. A connecting member 38 is sleeved on the second rotating shaft 37. The connecting member 38 is rotationally matched with the second rotating shaft 37. The locking member 31 movably penetrates through the connecting member 38 along its extending direction. The setting of the connecting member 38 enables the locking member 31 to rotate relative to the linkage 33. Moreover, the connecting member 38 does not affect the adjustment of the distance between the locking member 31 and the locking groove 321.

[0056] In this embodiment, refer to Figure 2 and Figure 3 , the connecting member 38 is provided with a first through hole and a second through hole 381. The first through hole of the locking groove 321 penetrates through the connecting member 38 of the locking groove 321 along the extending direction of the steel pipe of the locking groove 321. The second through hole 381 of the locking groove 321 penetrates through the connecting member 38 of the locking groove 321 along the extending direction of the locking member 31 of the locking groove 321. The second rotating shaft 37 of the locking groove 321 passes through the first through hole of the locking groove 321 and is rotationally matched with the first through hole of the locking groove 321. The locking member 31 of the locking groove 321 passes through the second through hole 381 of the locking groove 321 and is rotationally matched with the second through hole 381 of the locking groove 321. With such a setting, the connecting member 38 can drive the locking member 31 to rotate relative to the second rotating shaft 37.

[0057] Exemplarily, the connecting member 38 is a connecting plate, the linkage 33 is a U-shaped structure, and the two ends of the second rotating shaft 37 are respectively connected to the two ends of the U-shaped linkage 33 in a one-to-one correspondence.

[0058] Optionally, refer to Figure 1 , the steel pipe fastener further includes a first connecting plate 51, a second connecting plate 52 and a third rotating shaft 53. The first connecting plate 51 is fixedly connected to the first clamping member 1, the second connecting plate 52 is fixedly connected to the second clamping member 2, and both the first connecting plate 51 and the second connecting plate 52 are rotationally matched with the third rotating shaft 53. When the first connecting plate 51 rotates relative to the second connecting plate 52 through the third rotating shaft 53, the first connecting plate 51 can drive the first clamping member 1 to rotate relative to the second clamping member 2 fixedly connected to the second connecting plate 52, that is, the first clamping member 1 and the second clamping member 2 are rotationally connected through the first connecting plate 51, the third rotating shaft 53 and the second connecting plate 52.

[0059] Specifically, the first connecting plate 51 is provided with a first rotating groove extending along the axial direction of the third rotating shaft 53, the second connecting plate 52 is provided with a second rotating groove extending along the axial direction of the third rotating shaft 53, and the third rotating shaft 53 sequentially passes through the first rotating groove and the second rotating groove and is rotationally matched with the first rotating groove and the second rotating groove. With such a setting, both the first connecting plate 51 and the second connecting plate 52 can rotate around the axial direction of the third rotating shaft 53.

[0060] Further, circular limit members are provided at both ends of the third rotating shaft 53. The cross-sectional dimension of the circular limit member is larger than the cross-sectional dimensions of the first rotating groove and the second rotating groove, so that the third rotating shaft 53 will not disengage from the first rotating groove and the second rotating groove.

[0061] Exemplarily, the first clamping member 1 and the second clamping member 2 are rotatably connected by a hinge. The first connecting plate 51 and the second connecting plate 52 are the blades of the hinge, and the third rotating shaft 53 is the pin of the hinge.

[0062] In this embodiment, the first connecting plate 51 is fixedly connected to the first clamping member 1 by bolts or screws, and the second connecting plate 52 is fixedly connected to the second clamping member 2 by bolts or screws.

[0063] Optionally, refer to Figure 1 , an extension plate 23 is fixed on the second clamping member 2, and the connecting ear plate 21 and the elastic limit member 34 are both fixed on the side of the extension plate 23 away from the second clamping member 2, so as to facilitate the installation of the linkage member 33 on the second clamping member 2.

[0064] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by any person skilled in the art within the technical scope disclosed by the present invention fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A steel pipe fastener, characterized in that: include: A first clamping member (1) and a second clamping member (2), wherein the first clamping member (1) and the second clamping member (2) are rotatably matched, and the first clamping member (1) has a first state in which it is locked with the second clamping member (2) and a second state in which it is unlocked with the second clamping member (2). In the first state, the first clamping member (1) and the second clamping member (2) are surrounded by a mounting hole to form a steel pipe, and the steel pipe can pass through the mounting hole and be clamped by the first clamping member (1) and the second clamping member (2). In the second state, the first clamping member (1) can rotate relative to the second clamping member (2) and an opening for taking in and placing the steel pipe is formed between the first clamping member (1) and the second clamping member (2); The locking assembly (3) comprises a locking groove (321) and a locking member (31), wherein the locking groove (321) is arranged on the first clamping member (1), and the locking member (31) is movably arranged on the second clamping member (2); in the first state, the locking member (31) is engaged with the locking groove (321), and in the second state, the locking member (31) is disengaged from the locking groove (321).

2. The steel pipe fastener according to claim 1, characterized in that: The steel pipe fastener also includes a linkage member (33) arranged on the second clamping member (2), and the linkage member (33) can rotate around the extension direction of the steel pipe. The locking member (31) is movably arranged on the linkage member (33) along its extension direction and is rotationally connected to the linkage member (33). When the linkage member (33) is driven to rotate, the linkage member (33) can drive the locking member (31) to rotate and move along the circumferential direction of the steel pipe, so that the locking member (31) is engaged with or separated from the locking groove (321).

3. The steel pipe fastener according to claim 2, characterized in that: The steel pipe fastener also includes an elastic limiting member (34) arranged on the second clamping member (2), and a movable pushing portion (341) is arranged on the elastic limiting member (34), and the pushing portion (341) has an avoidance position for avoiding the linkage member (33) and a limiting position for abutting against the linkage member (33). When the linkage member (33) rotates to contact the pushing portion (341), it can push the pushing portion (341) to deform and move to the avoidance position. When the linkage member (33) rotates to be separated from the pushing portion (341), the pushing portion (341) can automatically move to the limiting position under the action of elastic force.

4. The steel pipe fastener according to claim 2, characterized in that: The steel pipe fastener also includes an adjusting member (35) arranged on the linkage member (33); the adjusting member (35) is sleeved on the locking member (31) and threadedly matched with the locking member (31).

5. The steel pipe fastener according to claim 2, characterized in that: An anti-slip piece (36) is provided at the end of the locking piece (31) connected to the linkage piece (33), and the anti-slip piece (36) is configured to prevent the locking piece (31) from being detached from the linkage piece (33).

6. The steel pipe fastener according to claim 2, characterized in that: The steel pipe fastener also includes a connecting ear plate (21) arranged on the second clamping member (2), a first rotating shaft (22) is passed through the connecting ear plate (21), and the first rotating shaft (22) is passed through the linkage member (33) and rotatably cooperates with the linkage member (33).

7. The steel pipe fastener according to claim 2, characterized in that: The steel pipe fastener also includes a second rotating shaft (37) arranged on the linkage member (33), a connecting member (38) is sleeved on the second rotating shaft (37), the connecting member (38) is rotatably matched with the second rotating shaft (37), and the first end of the locking member (31) is movably inserted into the connecting member (38) along its extension direction.

8. The steel pipe fastener according to claim 7, characterized in that: The connecting member (38) is provided with a first through hole and a second through hole (381), the first through hole penetrates the connecting member (38) along the extension direction of the steel pipe, the second through hole (381) penetrates the connecting member (38) along the extension direction of the locking member (31), the second rotating shaft (37) passes through the first through hole and is rotatably matched with the first through hole, and the locking member (31) passes through the second through hole (381) and is rotatably matched with the second through hole (381).

9. The steel pipe fastener according to any one of claims 1 to 8, characterized in that: The steel pipe fastener further comprises a first connecting plate (51), a second connecting plate (52) and a third rotating shaft (53); the first connecting plate (51) is fixedly connected to the first clamping member (1); the second connecting plate (52) is fixedly connected to the second clamping member (2); and the first connecting plate (51) and the second connecting plate (52) are both rotatably matched with the third rotating shaft (53).

10. The steel pipe fastener according to claim 9, characterized in that: The first connecting plate (51) is provided with a first rotating groove extending along the axial direction of the third rotating shaft (53), and the second connecting plate (52) is provided with a second rotating groove extending along the axial direction of the third rotating shaft (53). The third rotating shaft (53) passes through the first rotating groove and the second rotating groove in sequence and rotates in cooperation with the first rotating groove and the second rotating groove.

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