A cross-connection mechanism for a steel pipe scaffolding

Abstract

The present invention discloses an intersection connection mechanism for a steel pipe scaffolding, mainly to solve the problems of easy slipping caused by fixing with fasteners in the existing steel pipe scaffolding and easy fracture when over-tightened. It includes: a buckle plate, the middle of the buckle plate is provided with a through hole through which the vertical pipe body passes, and the buckle plate has insertion holes, and the insertion holes are paired and evenly distributed on the buckle plate; a locking fastener, the locking fastener is located at the edge end of the buckle plate, the locking fastener has a fastening end, and the fastening end is located on both sides of the top of the locking fastener; a guiding end, the guiding end is triangular and is located at the middle position of the locking fastener; a lifting part, the lifting part is located at the lower end of the locking fastener, the lifting part is hook-shaped and can lift the transverse pipe body and the longitudinal pipe body, and the guiding end and the lifting part are inclined at a 45° direction. The present invention has the beneficial effects of stable steel pipe fixation, convenient disassembly, replacement and maintenance.

Description

Technical Field

[0001] The present invention relates to the field of steel pipes, and particularly to an intersecting connection mechanism for a steel pipe scaffold. Background Art

[0002] A scaffold refers to various supports erected at a construction site for workers to operate and solve vertical and horizontal transportation problems. Currently, the most commonly used scaffold on the market is the fastener-type steel pipe scaffold, which has various advantages such as simple maintenance, long service life, and low input cost. The fastener-type steel pipe scaffold uses fasteners to connect the vertical steel pipes and the horizontal steel pipes. The bolt threads of the fasteners are easily damaged by bumps, rust, or being wrapped by concrete, affecting the firmness of the scaffold. Moreover, the fastening force of the vertical pipe fasteners depends on friction, which is determined by the degree to which the worker tightens the bolts. If not tightened, the friction is too small, and the vertical pipe fasteners are prone to slipping, posing a safety hazard. If tightened too much, the bolts are prone to breakage. Therefore, it is very important to have a mechanism that does not rely on squeezing the fasteners for fixation. Summary of the Invention

[0003] The purpose of the present invention is to provide an intersecting connection mechanism for a steel pipe scaffold to solve the problems of easy slipping and easy breakage when tightened too much caused by using fasteners in the existing steel pipe scaffolds.

[0004] To achieve the above object, the embodiments of the present invention adopt the following solutions:

[0005] An intersecting connection mechanism for a steel pipe scaffold, which includes:

[0006] A buckle plate, the middle of the buckle plate is provided with a through hole, through which the vertical pipe body passes. The buckle plate has insertion holes, the insertion holes are paired and evenly distributed on the buckle plate, and each pair of insertion holes is two mutually communicating through holes and are symmetrically arranged with each other;

[0007] A locking fastener, the locking fastener is located at the edge end of the buckle plate, and the locking fastener has

[0008] A fastening end, the fastening end is located on both sides of the top of the locking fastener, the fastening end is vertically downward and passes through the insertion hole;

[0009] A guiding end, the guiding end is triangular and is located at the middle position of the locking fastener;

[0010] A lifting part, the lifting part is located at the lower end of the locking fastener, the lifting part is hook-shaped and can lift the horizontal pipe body and the longitudinal pipe body, and the guiding end and the lifting part are inclined at a 45° angle;

[0011] A fixing cylinder, the fixing cylinder is fixed on the vertical pipe body;

[0012] The towing cylinder, the top end of the towing cylinder is attached to the bottom end of the buckle plate, the towing cylinder is used to support the buckle plate, and the towing cylinder is sleeved on the fixed cylinder.

[0013] Through the lifting part and the guiding end inclined at a 45° angle under the buckle plate, after the transverse pipe body and the longitudinal steel pipe body are loaded, they can only be loaded and unloaded at a 45° angle of inclination, maintaining the stability of the transverse pipe body and the longitudinal steel pipe body in the horizontal and vertical directions. Rely on the fastening end on the locking part to be buckled into the jack on the buckle plate to be fixed, stabilizing the locking part, so that the transverse pipe body and the longitudinal steel pipe body are cross-fixed.

[0014] Preferably, the buckle plate is provided with a first slot, the first slot is square and is located between the jacks.

[0015] Preferably, the locking part also has

[0016] A second slot, the second slot is located between the fastening ends, and the second slot is arranged in alignment with the first slot;

[0017] A tightening end, the tightening end is located at the front between the fastening ends, and the tightening end abuts against the vertical pipe body for fixing the locking part.

[0018] Preferably, the locking part is provided with a plug, and the plug has

[0019] A plug handle, the plug handle is attached to the top surface of the locking part, and the length of the plug handle is longer than the lengths of the first slot and the second slot;

[0020] A plug strip, the plug strip is strip-shaped, is arranged under the plug handle, the plug strip passes through the first slot and the second slot, the bottom end surface of the plug strip is used to abut against the transverse pipe body and the longitudinal pipe body, and a pin shaft passes through the plug strip, and the pin shaft is attached to the bottom of the top surface of the towing cylinder.

[0021] Preferably, a plug rod is provided at the rear of the locking part, the plug rod passes through the locking part and can be inserted into the transverse pipe body and the longitudinal pipe body to fix the transverse pipe body and the longitudinal pipe body.

[0022] Preferably, a resisting rod is also provided at the rear of the locking part, the resisting rod passes through the locking part, a resisting sleeve is provided at the front end of the resisting rod, a hollow part is provided inside the locking part, and the resisting sleeve can move in the hollow part.

[0023] Preferably, both the resisting rod and the plug rod are threaded rods, and the plug rod is arranged in the resisting rod and the length can be adjusted by twisting. The resisting sleeve can be attached to the surfaces of the transverse pipe body and the longitudinal pipe body for abutting against the transverse pipe body and the longitudinal pipe body.

[0024] Preferably, a pressing block is provided in the fixed cylinder. The pressing block is triangular in shape. A rubber ring is provided between the pressing block and the vertical pipe body. The outer surface of the towing cylinder is provided with a warping block. The lower part of the warping block is a long strip-shaped slot. The pressing block passes through this slot and fits under the warping block.

[0025] Preferably, the outer surface of the lower part of the fixed cylinder is threaded, and a rotating cylinder is sleeved on the outer surface. The rotating cylinder is located below the towing cylinder. The rotating cylinder can rotate and lift at the lower part of the fixed cylinder. The lifting of the rotating cylinder can resist the lifting of the towing cylinder, and can adjust the horizontal position of the horizontal pipe body and the longitudinal steel pipe body faster, and maintain the horizontal stability during work.

[0026] A using method of a cross-connection mechanism of a steel pipe scaffold includes:

[0027] Put the fixed cylinder on the vertical pipe body, then weld and fix it on the vertical pipe body, then install the rotating cylinder under the fixed cylinder, and finally put the towing cylinder down from directly above the fixed cylinder sleeve. When putting it in, align the slot directly below the warping block with the pressing block, and can quickly insert it so that the warping block squeezes and fits against the pressing block;

[0028] Insert the horizontal pipe body and the longitudinal steel pipe body into the lifting parts of the two locking fasteners respectively, then put the buckle plate on the vertical pipe body, make the buckle plate stick to the top surface of the towing cylinder, then keep the two locking fasteners horizontal first, and then make the pressing ends on the two locking fasteners press against the outer surface of the vertical pipe body, and the pressing ends are located above the buckle plate first, keep a small distance, and make the horizontal pipe body and the longitudinal steel pipe body be below the buckle plate. Finally, put down the two locking fasteners, make the fastening ends on both sides of the locking fasteners insert into the jacks on the buckle plate, and make the lifting ends at the lower part of the locking fasteners fit against the outer surface of the towing cylinder, so that the locking fasteners are fixed, and keep the horizontal pipe body and the longitudinal steel pipe body in the cross direction position;

[0029] Insert the two plugs down from directly above the first slots in two directions in the buckle plate respectively, make the inserting strips under the plugs pass through the first slots and the second slots on the locking fasteners, make the inserting handles on the plugs stick to the top end surfaces of the locking fasteners, and make the bottom end surfaces of the inserting strips under the two plugs press against the horizontal pipe body and the longitudinal steel pipe body respectively. Finally, pass the pin in the direction perpendicular to the inserting strip, so that the plug cannot be pulled out, and fix the horizontal pipe body and the longitudinal steel pipe body in the vertical direction;

[0030] Screw the resisting rod into the rear part of the locking fastener, and then screw the inserting rod into the resisting rod, so that the front end of the inserting rod inserts into the horizontal pipe body and the longitudinal steel pipe body, keep the horizontal pipe body and the longitudinal steel pipe body fixed, and finally rotate the resisting rod, so that the resisting sleeve at the front end of the resisting rod presses against the horizontal pipe body and the longitudinal steel pipe body, and stabilize and keep the horizontal pipe body and the longitudinal steel pipe body.

[0031] Beneficial effects of the present invention:

[0032] The present invention relates to a cross-connection mechanism for a steel pipe scaffold. The cross-connection mechanism is configured to fix the cross-connection mechanism and the longitudinal cross-connection mechanism by inserting the cross-connection mechanism and the longitudinal cross-connection mechanism into a supporting portion under a locking member and fixing the cross-connection mechanism on a buckle plate. The cross-connection mechanism and the longitudinal cross-connection mechanism are configured to fix the cross-connection mechanism and the longitudinal cross-connection mechanism ... BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0034] Figure 2 It is a side view of the present invention.

[0035] Figure 3 It is a disassembled schematic diagram of the locking component and other matching components in the present invention.

[0036] Figure 4 It is a schematic diagram of the disassembly of the components of the lower half of the present invention.

[0037] Figure 5 It is a side sectional view of the present invention.

[0038] Figure 6 It is a front cross-sectional view of the present invention.

[0039] 1. Vertical pipe body 2. Horizontal pipe body 3. Longitudinal pipe body

[0040] 4. buckle plate 41, jack 42, first slot

[0041] 5. Locking member 51, guide end 52, lifting part

[0042] 53, abutting end 54, buckling end 55, second slot

[0043] 56, hollow part 6, plug-in 61, plug-in handle

[0044] 62, insert 7, stopper 71, stopper sleeve

[0045] 8. Insert rod 9. Drag tube 91. Warp block

[0046] 10. Fixed cylinder 101, tightening block 102, rubber ring

[0047] 11. Rotating drum 12. Pin shaft DETAILED DESCRIPTION

[0048] In order to clearly and completely describe the objectives and technical solutions of the present invention, and make the advantages more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some but not all of the embodiments of the present invention, and are only used to explain the embodiments of the present invention, rather than limiting the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation of the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" 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 invention can be understood according to specific situations.

[0051] For the sake of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily obscuring these embodiments. Additionally, all embodiments can be used in combination with each other.

[0052] Such as Figure 1As shown in the figure, the present invention is a cross-connection mechanism for a steel pipe scaffolding, which includes: a buckle plate 4, the middle of the buckle plate 4 is provided with a through hole, through which the vertical pipe body 1 passes. The buckle plate 4 has insertion holes 41, the insertion holes 41 are paired and evenly distributed on the buckle plate 4, and each pair of insertion holes 41 is composed of two through holes that communicate with each other and are symmetrically arranged; a locking fastener 5, the locking fastener 5 is located at the edge end of the buckle plate 4, the locking fastener 5 has a fastening end 54, the fastening end 54 is located on both sides of the top of the locking fastener 5, the fastening end 54 is vertically downward and passes through the insertion hole 41; a guiding end 51, the guiding end 51 is triangular and is located at the middle position of the locking fastener 5; a lifting part 52, the lifting part 52 is located at the lower end of the locking fastener 5, the lifting part 52 is hook-shaped and can lift the transverse pipe body 2 and the longitudinal pipe body 3, and the guiding end 51 and the lifting part 52 are inclined at a 45° angle; a fixing cylinder 10, the fixing cylinder 10 is fixed on the vertical pipe body 1; a towing cylinder 9, the top end of the towing cylinder 9 is attached to the bottom end of the buckle plate 4, and the towing cylinder 9 is used to lift the buckle plate 4, and the towing cylinder 9 is sleeved on the fixing cylinder 10.

[0053] Through the lifting part 52 and the guiding end 51 that are inclined at a 45° angle under the buckle plate 4, after the transverse pipe body 2 and the longitudinal steel pipe body are loaded, they can only be loaded and unloaded at a 45° angle, maintaining the stability of the transverse pipe body 2 and the longitudinal steel pipe body in the horizontal and vertical directions. Relying on the fastening end 54 on the locking fastener 5 to be buckled in the insertion hole 41 on the buckle plate 4 to be fixed, the locking fastener 5 is stabilized, so that the transverse pipe body 2 and the longitudinal steel pipe body are kept cross-fixed.

[0054] Specifically, as Figure 3 shown, the buckle plate 4 is provided with a first slot 42, the first slot 42 is square and is located between the insertion holes 41.

[0055] Specifically, the locking fastener 5 further has a second slot 55, the second slot 55 is located between the fastening ends 54, and the second slot 55 is aligned with the first slot 42; a pressing end 53, the pressing end 53 is located at the front part between the fastening ends 54, and the pressing end 53 presses against the vertical pipe body 1 to fix the locking fastener 5.

[0056] Specifically, as Figure 3As shown, a plug-in member 6 is provided on the locking member 5. The plug-in member 6 has a plug handle 61 which is attached to the top surface of the locking member 5, and the length of the plug handle 61 is longer than the lengths of the first slot 42 and the second slot 55; a plug strip 62 which is strip-shaped and is arranged below the plug handle 61. The plug strip 62 passes through the first slot 42 and the second slot 55, and the bottom end surface of the plug strip 62 is used to abut against the transverse pipe body 2 and the longitudinal pipe body 3. A pin shaft 12 passes through the plug strip 62, and the pin shaft 12 is attached under the top surface of the towing cylinder 9. The plug-in member 6 is fixed by a plug pin and cannot be pulled out, so that the locking member 5 is firmly fixed on the buckle plate 4, reducing the shaking of the transverse pipe body 2 and the longitudinal pipe body 3.

[0057] Specifically, a plug rod 8 is provided at the rear of the locking member 5. The plug rod 8 passes through the locking member 5 and can be inserted into the transverse pipe body 2 and the longitudinal pipe body 3 to fix the transverse pipe body 2 and the longitudinal pipe body 3.

[0058] Specifically, as Figure 5 shown, a resisting rod 7 is also provided at the rear of the locking member 5. The resisting rod 7 passes through the locking member 5. A resisting sleeve 71 is provided at the front end of the resisting rod 7. A hollow part 56 is provided inside the locking member 5, and the resisting sleeve 71 can move in the hollow part 56.

[0059] Specifically, both the resisting rod 7 and the plug rod 8 are threaded rods, and the plug rod 8 is arranged in the resisting rod 7 and its length can be adjusted by twisting. The resisting sleeve 71 can be attached to the surfaces of the transverse pipe body 2 and the longitudinal pipe body 3 to resist the transverse pipe body 2 and the longitudinal pipe body 3.

[0060] Specifically, as Figure 4 shown, a resisting block 101 is provided in the fixing cylinder 10. The resisting block 101 is triangular. A rubber ring 102 is provided between the contact of the resisting block 101 and the vertical pipe body 1. A warping block 91 is provided on the outer surface of the towing cylinder 9. The lower part of the warping block 91 is a long strip-shaped long groove, and the resisting block 101 passes through this long groove and is attached under the warping block 91.

[0061] Specifically, the outer surface of the lower part of the fixing cylinder 10 is threaded, and a rotating cylinder 11 is sleeved on the outer surface. The rotating cylinder 11 is located below the towing cylinder 9. The rotating cylinder 11 can rotate and lift on the lower part of the fixing cylinder 10. The lifting of the rotating cylinder 11 can resist the lifting of the towing cylinder 9, more quickly adjusting the horizontal position of the transverse pipe body 2 and the longitudinal steel pipe body and maintaining the horizontal stability during work.

[0062] A using method of a cross-connection mechanism for a steel pipe scaffold includes:

[0063] Put the fixed cylinder 10 on the vertical pipe body 1, then weld and fix it on the vertical pipe body 1. Next, install the rotating cylinder 11 under the fixed cylinder 10. Finally, put the towing cylinder 9 down from directly above the fixed cylinder 10. When putting it on, align the long groove directly below the warping block 91 with the abutting block 101, and it can be quickly inserted so that the warping block 91 squeezes and fits against the abutting block 101;

[0064] Insert the transverse pipe body 2 and the longitudinal steel pipe body into the lifting parts 52 of the two locking fasteners 5 respectively. Then, put the buckling plate 4 on the vertical pipe body 1 so that the buckling plate 4 is attached to the top surface of the towing cylinder 9. Then, keep these two locking fasteners 5 horizontal first, and then make the abutting ends 53 on these two locking fasteners 5 abut against the outer surface of the vertical pipe body 1. And the abutting ends 53 are located above the buckling plate 4 first and keep a short distance. Make the transverse pipe body 2 and the longitudinal steel pipe body be located below the buckling plate 4. Finally, lower these two locking fasteners 5 so that the fastening ends 54 on both sides of the locking fasteners 5 are inserted into the jacks 41 on the buckling plate 4, and the lifting ends at the lower part of the locking fasteners 5 are attached to the outer surface of the towing cylinder 9 to fix the locking fasteners 5 and keep the transverse pipe body 2 and the longitudinal steel pipe body in a cross-directional position;

[0065] Insert the two inserts 6 down from directly above the first slots 42 in two directions in the buckling plate 4 respectively, so that the insertion bars 62 under the inserts 6 pass through the first slots 42 and the second slots 55 on the locking fasteners 5. The insertion handles 61 on the inserts 6 are attached to the top end surfaces of the locking fasteners 5, and the bottom end surfaces of the insertion bars 62 under these two inserts 6 abut against the transverse pipe body 2 and the longitudinal steel pipe body respectively. Finally, insert pins in the direction perpendicular to the insertion bars 62 to make the inserts 6 fixed and unable to be pulled out, and fix the transverse pipe body 2 and the longitudinal steel pipe body in the vertical direction;

[0066] Screw the resisting rod 7 into the rear part of the locking fastener 5, and then screw the inserting rod 8 into the resisting rod 7 so that the front end of the inserting rod 8 is inserted into the transverse pipe body 2 and the longitudinal steel pipe body to keep the transverse pipe body 2 and the longitudinal steel pipe body fixed. Finally, rotate the resisting rod 7 so that the resisting sleeve 71 at the front end of the resisting rod 7 abuts against the transverse pipe body 2 and the longitudinal steel pipe body to stabilize and keep the transverse pipe body 2 and the longitudinal steel pipe body.

[0067] The present invention is a cross-connection mechanism for a steel pipe scaffold. By loading the transverse pipe body 2 and the longitudinal steel pipe body onto the lifting parts 52 under the locking fasteners 5 and fixing the locking fasteners 5 on the buckling plate 4, the transverse pipe body 2 and the longitudinal steel pipe body can be fixed. And by using the detachable function of the locking fasteners 5 and the buckling plate 4, it is convenient for replacement and maintenance; the present invention has achieved the beneficial effects of stable steel pipe fixation, convenient disassembly, replacement and maintenance.

[0068] Although the above description of the illustrative embodiments of the present invention is provided to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, all inventions made using the concept of the present invention are within the scope of protection.

Claims

1. A cross-connection mechanism for a steel pipe scaffolding, wherein, Comprising: A buckle plate, with a through hole provided in the middle of the buckle plate, through which the vertical pipe body passes. The buckle plate has jack holes, which are paired and evenly distributed on the buckle plate. Each pair of jack holes is composed of two through holes that communicate with each other and are symmetrically arranged; A locking fastener, which is located at the edge end of the buckle plate. The locking fastener has a fastening end, which is located on both sides of the top of the locking fastener. The fastening end is vertically downward and passes through the jack hole; a guiding end, which is triangular and located at the middle position of the locking fastener; a lifting part, which is located at the lower end of the locking fastener. The lifting part is hook-shaped and can lift the transverse pipe body and the longitudinal pipe body. The guiding end and the lifting part are inclined at a 45° angle; a fixing cylinder, which is fixed on the vertical pipe body; a towing cylinder, the top end of which fits under the bottom end of the buckle plate. The towing cylinder is used to lift the buckle plate, and the towing cylinder is sleeved on the fixing cylinder.

2. The cross-connection mechanism for a steel pipe scaffolding according to claim 1, wherein, The buckle plate is provided with a first slot, which is square and located between the jack holes.

3. The cross-connection mechanism for a steel pipe scaffolding according to claim 2, wherein, The locking fastener also has a second slot, which is located between the fastening ends, and the second slot is aligned with the first slot; a tightening end, which is located at the front between the fastening ends. The tightening end abuts against the vertical pipe body to fix the locking fastener.

4. The cross-connection mechanism for a steel pipe scaffolding according to claim 3, wherein, The locking fastener is provided with a plug, and the plug has a plug handle, which fits on the top surface of the locking fastener. The length of the plug handle is longer than the lengths of the first slot and the second slot; a plug strip, which is strip-shaped and is arranged under the plug handle. The plug strip passes through the first slot and the second slot. The bottom end surface of the plug strip is used to abut against the transverse pipe body and the longitudinal pipe body. A pin shaft passes through the plug strip, and the pin shaft fits under the top surface of the towing cylinder.

5. The cross-connection mechanism for a steel pipe scaffolding according to claim 1, wherein, At the rear of the locking fastener, there is a plug rod, which passes through the locking fastener and can be inserted into the transverse pipe body and the longitudinal pipe body to fix the transverse pipe body and the longitudinal pipe body.

6. The cross-connection mechanism for a steel pipe scaffolding according to claim 5, wherein, At the rear of the locking fastener, there is also a resisting rod, which passes through the locking fastener. A resisting sleeve is provided at the front end of the resisting rod. A hollow part is provided inside the locking fastener, and the resisting sleeve can move in the hollow part.

7. The cross-connection mechanism for a steel pipe scaffolding according to claim 6, wherein, Both the resisting rod and the plug rod are threaded rods, and the plug rod is arranged inside the resisting rod and its length can be adjusted by twisting. The resisting sleeve can fit on the surfaces of the transverse pipe body and the longitudinal pipe body to abut against the transverse pipe body and the longitudinal pipe body.

8. The cross-connection mechanism for a steel pipe scaffolding according to claim 1, wherein, A tightening block is provided in the fixing cylinder. The tightening block is triangular. A rubber ring is provided between the fitting of the tightening block and the vertical pipe body. A warping block is provided on the outer surface of the towing cylinder. The lower part of the warping block is a long strip-shaped long groove. The tightening block passes through this long groove and fits under the warping block.

9. The cross-connection mechanism for a steel pipe scaffolding according to claim 8, wherein, The outer surface of the lower part of the fixing cylinder is threaded, and a rotating cylinder is sleeved on the outer surface. The rotating cylinder is located below the towing cylinder, and the rotating cylinder can rotate and lift on the lower part of the fixing cylinder.

10. A method for using the cross-connection mechanism of a steel pipe scaffolding, comprising: Put the fixed cylinder on the vertical pipe body, then weld and fix it on the vertical pipe body. Next, install the rotating cylinder under the fixed cylinder. Finally, put the towing cylinder down from directly above the fixed cylinder sleeve. When putting it on, align the long groove directly below the lifting block with the abutting block, and it can be quickly inserted so that the lifting block squeezes and fits against the abutting block. Insert the transverse pipe body and the longitudinal steel pipe body into the lifting parts of the two locking parts respectively. Then, put the buckling disc on the vertical pipe body so that the buckling disc is attached to the top surface of the towing cylinder. Then, keep these two locking parts horizontal first, and then make the abutting ends on these two locking parts abut against the outer surface of the vertical pipe body. And the abutting ends are located above the buckling disc first, maintaining a short distance, and make the transverse pipe body and the longitudinal steel pipe body located below the buckling disc. Finally, lower these two locking parts so that the fastening ends on both sides of the locking parts are inserted into the jacks on the buckling disc, and the lifting ends at the lower part of the locking parts are attached to the outer surface of the towing cylinder to fix the locking parts and keep the transverse pipe body and the longitudinal steel pipe body in a crosswise position. Insert the two plugs down from the positions directly above the first slots in two directions in the buckling disc, so that the insertion bars under the plugs pass through the first slots and the second slots on the locking parts. The insertion handles on the plugs are attached to the top end surfaces of the locking parts, and make the bottom end surfaces of the insertion bars under these two plugs abut against the transverse pipe body and the longitudinal steel pipe body respectively. Finally, insert the pins in the direction perpendicular to the insertion bars to make the plugs unable to be pulled out and fix the transverse pipe body and the longitudinal steel pipe body in the vertical direction. Screw the abutting rod into the rear part of the locking part, and then screw the insertion rod into the abutting rod so that the front end of the insertion rod is inserted into the transverse pipe body and the longitudinal steel pipe body to keep the transverse pipe body and the longitudinal steel pipe body fixed. Finally, rotate the abutting rod so that the abutting sleeve at the front end of the abutting rod abuts against the transverse pipe body and the longitudinal steel pipe body to stabilize and hold the transverse pipe body and the longitudinal steel pipe body.

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