Disc buckle type scaffold bolt anti-loosening device convenient to lock and disassemble

Abstract

The invention provides a disc buckle type scaffold plug pin anti-loosening device convenient to lock and disassemble. The disc buckle type scaffold plug pin anti-loosening device comprises a plug pin, a horizontal rod end buckling connector, a plug pin anti-loosening assembly and a screw. The horizontal rod end buckling head is clamped on a disc with a through hole on the scaffold; the bolt anti-loosening assembly is fixedly mounted at a position flush with the lower bottom surface of the horizontal rod end buckling head through a screw rod; a U-shaped bayonet is formed in the lower end of the bolt; the bolt anti-loosening assembly comprises a T-shaped lock pin; when the plug pin is sequentially inserted into the horizontal rod end buckling head, the disc and the plug pin anti-loosening assembly in a penetrating mode, a T-shaped lock pin of the plug pin anti-loosening assembly is clamped into a U-shaped bayonet, and locking of the device is achieved. And when the T-shaped lock pin is separated from the U-shaped bayonet under the action of the bolt anti-loosening assembly, the device can be detached. According to the device, the operation difficulty of constructors can be greatly reduced, the safety problem caused by misoperation is reduced, and meanwhile the construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of installation of socketed scaffolding, and specifically, to an anti-loosening device for socket pins of a socketed scaffolding that is convenient for locking and removal. Background Art

[0002] The socketed disk lock scaffolding is mainly composed of a connecting disk, a socket pin, a socket at the end of a horizontal bar, a horizontal bar, a diagonal bar, a socket at the end of a diagonal bar, and a vertical pole. In the prior art, it is found that when the socketed disk lock scaffolding is used and installed, according to the specification JGJ / T 231-2021 "Safety Technical Standard for Socketed Steel Pipe Scaffolding in Building Construction", after the socket at the end of the bar and the socket pin of the connecting disk are hammered and self-locked, they should not be pulled out. When erecting the scaffolding, it is advisable to use a hammer weighing not less than 0.5 kg to strike the top surface of the socket pin not less than 2 times until the socket pin is tightened. After tightening, it should be struck again, and the sinking amount of the socket pin should not be greater than 3 mm.

[0003] First of all, the force exerted by a hammer of the same weight varies from person to person; secondly, the concept of "tightening" is relatively vague, and although the sinking amount of the socket pin not being greater than 3 mm after tightening again has been quantified, it is not convenient to execute during a large amount of intensive work in actual implementation; finally, considering that when the scaffold is under a large external force, especially the horizontal load of the pump pipe, during long-term use, even if the socket pin that was originally "tightened" may become loose, resulting in insufficient joint stiffness and scaffold instability, there are major safety hazards. Summary of the Invention

[0004] The purpose of the present invention is to specifically solve the above problems existing in the prior art, and to propose an anti-loosening device for socket pins of a socketed scaffolding that is convenient for locking and removal, so that the socket pin is tightened without being restricted to a hammer of a specific weight, without being restricted by the force and the number of strikes of the operator, and without having to strike again after tightening and judge whether the sinking amount of the socket pin is greater than 3 mm. Instead, a U-shaped bayonet is set for the socket pin as the standard of the socket pin travel, and at the same time, the standard of this socket pin travel is consistent with the standard of socket pin tightening. Therefore, as long as the socket pin makes a sound of being caught by the U-shaped bayonet during normal operation, it indicates that the travel standard has been reached, which directly means that the tightening degree meets the specification standard, which is simple and clear without cumbersome judgment. At the same time, during use, the socket pin is in a locked state and there is absolutely no problem of possible loosening leading to scaffold instability, and it is also very convenient to unlock when dismantling the scaffold.

[0005] An anti-loosening device for socket pins of a socketed scaffolding that is convenient for locking and removal according to the present invention includes: a socket pin, a socket at the end of a horizontal bar, an anti-loosening assembly for the socket pin, and a screw;

[0006] The end buckle joint of the horizontal rod is clamped on a disc with a through hole on the scaffold, and the pin anti-loosening component is fixedly installed at a position flush with the lower bottom surface of the end buckle joint of the horizontal rod through a screw;

[0007] A U-shaped bayonet is opened at the lower end of the pin; the pin anti-loosening component includes a T-shaped locking pin;

[0008] When the pin is sequentially inserted through the end buckle joint of the horizontal rod, the disc, and the pin anti-loosening component, the T-shaped locking pin of the pin anti-loosening component is snapped into the U-shaped bayonet to realize the locking of the device; when the T-shaped locking pin is separated from the U-shaped bayonet under the action of the pin anti-loosening component, the disassembly of the device can be realized.

[0009] Further, the lower end of the end buckle joint of the horizontal rod is provided with a threaded hole for facilitating connection with the pin anti-loosening component.

[0010] Further, the pin anti-loosening component further includes a T-shaped locking pin extension, a rotating shaft, a C-shaped switching bushing, a positioning spring, a switching spring, and an anti-loosening tightening component;

[0011] The rotating shaft is sleeved into the C-shaped switching bushing, and the T-shaped locking pin is pushed horizontally along the C-shaped switching bushing into the rotating shaft so that one end of the T-shaped locking pin fits with the C-shaped switching bushing; the T-shaped locking pin extension is threadedly connected with the T-shaped locking pin, and the end of the T-shaped locking pin extension is connected to the anti-loosening tightening component; the positioning spring is sleeved outside the T-shaped locking pin extension, and the switching spring is sleeved outside the rotating shaft.

[0012] Further, the T-shaped locking pin includes a limiting cross bar and a connecting vertical bar;

[0013] One side of the limiting cross bar is a U-shaped arc surface that is inserted and clamped at the U-shaped bayonet opened on the pin, and the other side is a flat surface that is welded and fixed in the middle with the connecting vertical bar.

[0014] Further, the T-shaped locking pin extension includes a retaining ring, an extension rod, and a limiting tail rod; a first threaded section is opened at the tail end of the connecting vertical bar;

[0015] The retaining ring is an annular iron plate; a second threaded section is opened on the inner wall of one end of the extension rod, and it passes through the inner wall of the retaining ring and is welded and fixed with it in alignment and concentricity in the middle. The length of the second threaded section is the same as the length of the first threaded section at the tail end of the connecting vertical bar of the T-shaped locking pin and is threadedly connected with it. The other end of the extension rod is welded and fixed with the limiting tail rod;

[0016] One end of the limiting tail rod is flat and the other end is hemispherical. The flat end is centered and welded to the non-threaded end of the extension rod. A limiting slot is horizontally opened opposite near the hemispherical end. One of the internal corners of the limiting slot is rounded and the other is a right angle, which is used in conjunction with the anti-loosening and tightening component. When the T-shaped locking pin and the T-shaped locking pin extension are tightened in place by threading, the limiting cross bar is perpendicular to the corner line of the limiting slot.

[0017] Further, the shaft tube includes a thick-walled section and a thin-walled section; the rotating shaft includes an upper ear piece, a lower ear piece, and a shaft tube; the C-shaped switching shaft sleeve includes a C-shaped sleeve frame, a one-character limiting block A, a one-character limiting block B, a 7-shaped limiting block C, and a 7-shaped limiting block D;

[0018] The upper ear piece and the lower ear piece are iron blocks with one end being a flat end and the other end being an arc end. The flat ends of the upper ear piece and the lower ear piece are respectively welded to the outer wall of the thick-walled section of the shaft tube in a 180-degree opposite direction and are in line with the first long slideway, the second long slideway, the first short slideway, and the second short slideway provided inside the C-shaped switching shaft sleeve. The arc shape can reduce the frictional resistance of the contact surface and ensure smooth pushing and sliding;

[0019] The outer wall of the thick-walled section is welded to the flat ends of the upper ear piece and the lower ear piece, and the outer wall of the tail end of the thin-walled section is threaded and is threadedly connected to the anti-loosening and tightening component;

[0020] A circular countersunk hole is opened in the center of the C-shaped sleeve frame for installing the rotating shaft. The horizontal direction of the circular countersunk hole is opposite to the first long slideway and the second long slideway; the vertical direction of the circular countersunk hole is opposite to the first short slideway and the second short slideway;

[0021] Two semi-circular chutes are horizontally opened opposite inside the C-shaped sleeve frame, and the semi-circular chutes are used in conjunction with the semi-circular arc surfaces provided at both ends of the limiting cross bar of the T-shaped locking pin;

[0022] The one-character limiting block A is welded to the lower outside of the first long slideway of the circular countersunk hole and is flush with the lower groove surface of the first long slideway. The one-character limiting block B is welded to the upper outside of the second long slideway of the circular countersunk hole and is flush with the upper groove surface of the second long slideway. When the rotating shaft rotates, the one-character limiting block A and the one-character limiting block B play a limiting role, enabling the upper ear piece and the lower ear piece of the rotating shaft to smoothly enter the first long slideway and the second long slideway respectively;

[0023] The 7-shaped limiting block C is welded to the left outside of the second short slideway of the circular countersunk hole and is flush with the left groove surface of the second short slideway. The 7-shaped limiting block D is welded to the right outside of the first short slideway of the circular countersunk hole and is flush with the right groove surface of the first short slideway. When the rotating shaft is pushed and rotated, the 7-shaped limiting block C and the 7-shaped limiting block D play a limiting role, facilitating the switching of the slideways of the upper ear piece and the lower ear piece of the rotating shaft according to the needs of the working state.

[0024] Further, the positioning spring includes a retaining ring E, a spring, and a retaining ring F; the retaining ring E and the retaining ring F are annular iron plates, and the inner diameter of the spring is the same as that of the retaining ring E and the retaining ring F; one side wall of the retaining ring E is concentrically welded to one end of the spring, and the other end of the spring is concentrically welded to one side wall of the retaining ring F. The positioning spring is sleeved outside the T-shaped lock pin extension, so that the non-welded side wall of the retaining ring E abuts against the side wall of the T-shaped lock pin extension. At this time, the positioning spring is in a relaxed state, and the elastic force is less than that of the switching spring.

[0025] Further, the switching spring includes a retaining ring G, a spring, and a retaining ring H;

[0026] The retaining ring G and the retaining ring H are annular iron plates, and the inner diameter of the spring is the same as that of the retaining ring G and the retaining ring H; one side wall of the retaining ring G is concentrically welded to one end of the spring, and the other end of the spring is concentrically welded to one side wall of the retaining ring H. The switching spring is sleeved outside the rotating shaft, so that the non-welded side wall of the retaining ring G abuts against the side wall of the C-shaped switching bushing. At this time, the switching spring is also in a relaxed state, and the elastic force is greater than that of the positioning spring.

[0027] Further, the anti-loosening and tightening assembly includes a sleeve, a spring, a tail clip, a tail cover, a tightening member, a torsion spring, and a torsion spring pin;

[0028] The sleeve includes a triple variable cross-section tube, a large arc-shaped steel plate, and a torsion spring base; the triple variable cross-section tube has wall segments with different thicknesses on the inner wall, including a thinner wall segment, a thick wall segment, and a relatively thick wall segment;

[0029] The spring is sleeved from the thin wall segment of the triple variable cross-section tube and onto the outside of the T-shaped lock pin extension, so that one side of the spring abuts tightly against one side wall of the thick wall of the triple variable cross-section tube near the thin wall segment;

[0030] The tail clip is connected to the other side of the spring, and the tail cover is screwed onto the external thread of the thin wall segment of the triple variable cross-section tube and is connected to the tail clip after being tightened;

[0031] The torsion spring is installed on both sides of the tightening member through the torsion spring pin; the tightening member acts on the top of the sleeve to play a role of limiting and tightening.

[0032] Further, the spring includes a large retaining ring, a spring, and a small retaining ring;

[0033] One side wall of the large retaining ring is concentrically welded and fixed to one end of the spring, and one side wall of the small retaining ring is concentrically welded and fixed to the other end of the spring.

[0034] Further, the tightening member includes a limit stop block and a tightening control pressure plate; the tail clip includes a clip frame; a V-shaped chuck; the clip frame includes a limit plate J, a limit plate K, a stiffening plate, and a connecting plate;

[0035] The top pressing control pressing plate includes a slope section and a horizontal section; a limiting stop block is arranged at the lower opening level of one end of the horizontal section, and the limiting stop block is inserted into a rectangular wall groove arranged in the thin wall section to play the role of limiting the top pressing part; an arc-shaped shaft hole is opened in the horizontal direction at the upper opening of the slope section for inserting a torsion spring; the lowest point of the lower opening of the slope section is slightly lower than the highest point of the surface of the tail card limiting plate, which is convenient for sliding into the tail card limiting plate to achieve the top pressing work;

[0036] The limiting plates J and K are small arc-shaped steel plates; a slope groove M is arranged on the upper surface of the limiting plate J to limit the displacement of the T-shaped locking pin by the top pressing part; the stiffening plate is a triangular steel plate for strengthening and fixing the limiting plates J and K and the connecting plate; the connecting plate is provided with a ring plate with holes, and the diameter of the holes in the ring plate is larger than the diameter of the limiting tail rod and smaller than the diameter of the extension rod, which is convenient for the limiting tail rod to pass through.

[0037] In summary, the technical principle of the present invention is as follows: 1. First, assemble the socket nodes of the vertical poles and horizontal poles of the existing disc and socket scaffolding according to the requirements of Article 3.0.2 of the Specification JGJ / T 231-2021 "Safety Technical Standards for the Construction of Socket-Type Disc and Socket Steel Pipe Scaffolds" of the existing technology, and make it meet the standards of this article: "After the pin connection between the rod end socket joint and the connection disc is hammered and self-locked, it should not be pulled off. When erecting the scaffolding, it is advisable to use a hammer weighing not less than 0.5 kg to strike the top surface of the pin no less than 2 times until the pin is tightened. After tightening, it should be struck again, and the sinking amount of the pin should not be greater than 3 mm.", and then make marks at the lower surface of the pin at the socket node of the assembled disc and socket, and then open a semi-circular U-shaped bayonet with a diameter of 5 mm downward from the marked point as the standard for the stroke caused by the installation and hammering of the pin, and at the same time, it is also the standard for the tightening caused by the installation and hammering of the pin;

[0038] 2. Open two threaded holes at the lower surface of the horizontal rod end socket joint of the existing technology, and then assemble the device of the present invention and the horizontal rod end socket joint with two additional threaded holes into a whole through two screw rods for use.

[0039] 3. For the socket joint of the disc and socket scaffold modified according to the technology of the present invention, as long as the pin moves downward under external force until the opened semi-circular U-shaped bayonet is blocked by this device, it can be directly determined that the tightening standard required by the specification is met, and it can be judged by hearing the blocking sound, which is very simple; during the use process, the pin is always in a locked state, so there is absolutely no problem of loosening that may cause the instability of the scaffold, thus eliminating the major safety hazard of the existing technology that the pin loosens during construction and causes the node to fail and the scaffold to collapse; when disassembling the scaffold, it is also very convenient to unlock this device.

[0040] Compared with the existing technology, the present invention has the following beneficial effects:

[0041] 1. The "tightening" judgment of the prior art is cumbersome and inefficient in implementation. Moreover, the total number of pins struck by each worker per shift is too large, so the work efficiency of the entire shift will be greatly affected. Therefore, it is simply impossible to truly implement it in actual operation, leaving potential safety hazards. However, this device has well solved this problem, greatly reducing the operation difficulty of construction workers, reducing safety problems caused by improper operation, and improving construction efficiency at the same time.

[0042] 2. This device can ensure that when the scaffolding bears a large external force for a long time, the tight connection between all components is still maintained, and the structure of the scaffold body is always kept stable, providing reliable support for construction operations such as high-altitude work.

[0043] 3. This device is not only convenient to install, but also the removal process is equally simple, reducing the time and labor costs required for the scaffold removal link and accelerating the turnover speed.

[0044] 4. It reduces the frequent inspection and maintenance requirements caused by pin loosening and reduces the corresponding labor input. At the same time, it improves construction efficiency, shortens the construction period, and reduces time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Other features, purposes, and advantages of the present invention will become more obvious by reading the detailed description of the non-restrictive embodiments with reference to the following drawings:

[0046] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0047] Figure 2 It is a schematic diagram of the structure of the end socket of the horizontal bar of the present invention;

[0048] Figure 3 It is a schematic diagram of the structure of the pin anti-loosening component of the present invention;

[0049] Figure 4 It is a schematic diagram of the structure of the T-shaped locking pin of the present invention;

[0050] Figure 5 It is a schematic diagram of the structure of the T-shaped locking pin extension of the present invention;

[0051] Figure 6 It is a schematic diagram of the structure of the limiting tail rod of the present invention;

[0052] Figure 7 It is a schematic diagram of the structure of the rotating shaft of the present invention;

[0053] Figure 8 It is a schematic diagram of the structure of the C-shaped switching bushing of the present invention;

[0054] Figure 9 It is a schematic diagram of the structure of the positioning spring of the present invention;

[0055] Figure 10 Schematic structural diagram of the switching spring of the present invention;

[0056] Figure 11 Schematic structural diagram of the anti-loosening and tightening component of the present invention;

[0057] Figure 12 Schematic structural diagram of the casing of the present invention;

[0058] Figure 13 Schematic structural diagram of the tightening member of the present invention;

[0059] Figure 14 Schematic structural diagram of the spring of the present invention;

[0060] Figure 15 Schematic structural diagram of the tail card of the present invention;

[0061] Figure 16 Schematic structural diagram of the V-shaped chuck of the present invention;

[0062] Figure 17 Schematic structural diagram of the tail cover of the present invention;

[0063] Figure 18 Schematic structural diagram of the torsion spring of the present invention;

[0064] Figure 19 Schematic structural diagram of the torsion spring plug of the present invention;

[0065] Figure 20 Schematic structural diagram of the installation state of step 1 in the scaffolding installation steps of the present invention;

[0066] Figure 21 Schematic structural diagram of the installation state of step 2 in the scaffolding installation steps of the present invention;

[0067] Figure 22 Schematic structural diagram of the installation state of step 3 in the scaffolding installation steps of the present invention;

[0068] Figure 23 Schematic structural diagram of the installation state of step 4 in the scaffolding installation steps of the present invention;

[0069] Figure 24 Schematic structural diagram of the installation state of step 5 in the scaffolding installation steps of the present invention;

[0070] Figure 25 Schematic structural diagram of the installation state of step 6 in the scaffolding installation steps of the present invention;

[0071] Figure 26 Schematic structural diagram of the installation state of step 7 in the scaffolding installation steps of the present invention;

[0072] Figure 27 It is a schematic structural diagram of the installation state in step 8 of the scaffolding installation steps of the present invention;

[0073] Figure 28 It is a schematic structural diagram of the installation state in step 9 of the scaffolding installation steps of the present invention;

[0074] Figure 29 It is a schematic structural diagram of the installation state in step 10 of the scaffolding installation steps of the present invention;

[0075] Figure 30 It is a schematic structural diagram of the installation state in step 11 of the scaffolding installation steps of the present invention;

[0076] Figure 31 It is a schematic diagram of the working state change after the scaffolding of the present invention is installed;

[0077] Figure 32 It is a schematic diagram of the state change of the scaffolding dismantling steps of the present invention. Specific embodiments

[0078] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0079] As Figure 1 shown, the present invention provides a plug anti-loosening device for a disc buckle type scaffolding that is convenient for locking and dismantling, including: a plug 1, a horizontal rod end buckle joint 2, a plug anti-loosening assembly 3, and a screw rod 4.

[0080] The plug 1 is a wedge-shaped plug, and a U-shaped bayonet 1-1 is opened at a position flush with the lower bottom surface of the horizontal rod end buckle joint when it is in place and inserted tightly during work.

[0081] As Figure 2 shown, for the horizontal rod end buckle joint 2, a threaded hole 2-1 is opened at the lower end, which is convenient for connecting with the plug anti-loosening assembly 3.

[0082] As Figure 3 shown, the plug anti-loosening assembly 3 includes a T-shaped locking pin 3-1, a T-shaped locking pin extension 3-2, a rotating shaft 3-3, a C-shaped switching bushing 3-4, a positioning spring 3-5, a switching spring 3-6, and an anti-loosening tightening assembly 3-7.

[0083] As Figure 4As shown in the figure, the T-shaped locking pin 3-1 includes a limiting cross bar 3-1-1 and a connecting vertical bar 3-1-2. One side of the limiting cross bar 3-1-1 is a U-shaped arc surface which is inserted into the U-shaped bayonet 1-1 opened on the bolt, and the other side is a flat surface which is welded and fixed in the middle with the connecting vertical bar 3-1-2. The two ends are semi-circular arc surfaces 3-1-1-1 which are used in conjunction with the semi-circular arc surface chute 3-4-1-6 of the C-shaped sleeve 3-4-1; the connecting vertical bar 3-1-2 is a rod with a circular cross-section, and a first threaded section 3-1-2-1 is opened at the tail end.

[0084] As Figure 5 - 6 As shown in the figure, the T-shaped locking pin extension 3-2 includes a retaining ring 3-2-1, an extension rod 3-2-2, and a limiting tail rod 3-2-3. The retaining ring 3-2-1 is an annular iron plate. A second threaded section 3-2-2-1 is opened on the inner wall of one end of the extension rod 3-2-2, and it passes through the inner wall of the retaining ring 3-2-1 and is welded and fixed in the middle with it in an aligned and concentric manner. The length of the second threaded section 3-2-2-1 is the same as that of the first threaded section 3-1-2-1 at the tail end of the connecting vertical bar 3-1-2 of the T-shaped locking pin 3-1 and is threadedly connected with it. The other end of the extension rod 3-2-2 is welded and fixed with the limiting tail rod 3-2-3; one end of the limiting tail rod 3-2-3 is a flat mouth shape 3-2-3-2, and the other end is a hemispherical shape 3-2-3-3. The flat mouth shape 3-2-3-2 end is welded and fixed in the middle with the non-threaded end of the extension rod 3-2-2. A limiting slot 3-2-3-1 is horizontally and oppositely opened near the hemispherical shape 3-2-3-3 end. One inner corner of the limiting slot 3-2-3-1 is set as an arc 3-2-3-1-1, and the other inner corner is a right angle 3-2-3-1-2, which is used in conjunction with the V-shaped bayonet 3-7-3-2. When the T-shaped locking pin 3-1 and the T-shaped locking pin extension 3-2 are screwed tightly in place, the limiting cross bar 3-1-1 is perpendicular to the inner corner line of the limiting slot 3-2-3-1.

[0085] As Figure 7As shown, the rotating shaft 3-3 includes an upper ear piece 3-3-1, a lower ear piece 3-3-2, and a shaft tube 3-3-3. The upper ear piece 3-3-1 and the lower ear piece 3-3-2 are iron blocks with a flat end and a circular arc end. The flat ends of the upper ear piece 3-3-1 and the lower ear piece 3-3-2 are respectively welded and fixed to the outer wall of the thick-walled section 3-3-3-1 of the shaft tube 3-3-3 at 180-degree opposite sides. The circular arc ends are used in conjunction with the first long slideway 3-4-1-3, the second long slideway 3-4-1-4, the first short slideway 3-4-1-1, and the second short slideway 3-4-1-2 of the C-shaped switching bushing 3-4. The arc shape can reduce the frictional resistance of the contact surface and ensure smooth pushing and sliding. The shaft tube 3-3-3 includes a thick-walled section 3-3-3-1 and a thin-walled section 3-3-3-2. The outer diameter is slightly smaller than the circular counterbore 3-4-1-7 for easy insertion and installation. The outer wall of the thick-walled section 3-3-3-1 is welded and fixed to the flat ends of the upper ear piece 3-3-1 and the lower ear piece 3-3-2. The inner diameter is slightly larger than the diameter of the connecting vertical rod 3-1-2 and smaller than the outer diameter of the retaining ring 3-2-1. The outer wall of the tail end of the thin-walled section 3-3-3-2 is provided with a thread 3-3-3-2-1, which is threadedly connected to the anti-loosening and tightening assembly 3-7. The inner diameter is slightly larger than the outer diameter of the retaining ring 3-2-1.

[0086] As Figure 8As shown in the figure, the C-shaped switching bushing 3-4 includes a C-shaped bushing frame 3-4-1; a linear limit block A 3-4-4; a linear limit block B 3-4-5; a 7-shaped limit block C 3-4-2; and a 7-shaped limit block D 3-4-3. A circular counterbore 3-4-1-7 is provided at the center of the C-shaped bushing frame 3-4-1 for installing the rotating shaft 3-3. Two first long sliding grooves 3-4-1-3 and a second long sliding groove 3-4-1-4 are provided horizontally and oppositely in the circular counterbore 3-4-1-7, and the bottom of the sliding groove is not perforated; when rotated 90 degrees, a first short sliding groove 3-4-1-1 and a second short sliding groove 3-4-1-2 are provided vertically and oppositely, and the bottom of the sliding groove is not perforated. Two semi-circular sliding grooves 3-4-1-6 are provided horizontally and oppositely inside the C-shaped bushing frame 3-4-1, and the semi-circular sliding grooves 3-4-1-6 are used in conjunction with the semi-circular arc surfaces 3-1-1-1 at both ends of the limit cross bar 3-1-1 of the T-shaped locking pin 3-1. Two bolt holes 3-4-1-5 are provided vertically and oppositely in the C-shaped bushing frame 3-4-1 to facilitate the insertion of the screw 4 and the threaded connection and fixation with the threaded hole 2-1 on the threaded end joint 2 of the horizontal rod. The linear limit block A 3-4-4 is welded to the outer lower side of the first long sliding groove 3-4-1-3 of the circular counterbore 3-4-1-7 and is flush with the lower groove surface of the first long sliding groove 3-4-1-3. The linear limit block B 3-4-5 is welded to the outer upper side of the second long sliding groove 3-4-1-4 of the circular counterbore 3-4-1-7 and is flush with the upper groove surface of the second long sliding groove 3-4-1-4. When the rotating shaft 3-3 rotates, the linear limit blocks A 3-4-4 and B 3-4-5 play a limiting role, enabling the upper earpiece 3-3-1 and the lower earpiece 3-3-2 of the rotating shaft to smoothly enter the first long sliding groove 3-4-1-3 and the second long sliding groove 3-4-1-4 respectively. The 7-shaped limit block C 3-4-2 is welded to the outer left side of the second short sliding groove 3-4-1-2 of the circular counterbore 3-4-1-7 and is flush with the left groove surface of the second short sliding groove 3-4-1-2. The 7-shaped limit block D 3-4-3 is welded to the outer right side of the first short sliding groove 3-4-1-1 of the circular counterbore 3-4-1-7 and is flush with the right groove surface of the first short sliding groove 3-4-1-1. When the rotating shaft 3-3 is pushed and rotated, the 7-shaped limit blocks C 3-4-2 and D 3-4-3 play a limiting role, facilitating the switching of the sliding grooves of the upper earpiece 3-3-1 and the lower earpiece 3-3-2 of the rotating shaft 3-3 according to the needs of the working state.

[0087] As Figure 9As shown, the positioning spring 3-5 includes a retaining ring E3-5-1; a spring 3-5-2; and a retaining ring F3-5-3. The retaining ring E3-5-1 and the retaining ring F3-5-3 are annular iron plates, and the inner diameter of the spring 3-5-2 is the same as that of the retaining ring E3-5-1 and the retaining ring F3-5-3. One side wall of the retaining ring E3-5-1 is concentrically welded to one end of the spring 3-5-2, and the other end of the spring 3-5-2 is concentrically welded to one side wall of the retaining ring F3-5-3. The positioning spring 3-5 is sleeved outside the T-shaped lock pin extension 3-2, such that the non-welded side wall of the retaining ring E3-5-1 abuts against the side wall of the retaining ring 3-2-1 of the T-shaped lock pin extension 3-2. At this time, the positioning spring 3-5 is in a relaxed state, and the elastic force is less than that of the switching spring 3-6.

[0088] As Figure 10 shown, the switching spring 3-6 includes a retaining ring G3-6-1; a spring 3-6-2; and a retaining ring H3-6-3. The retaining ring G3-6-1 and the retaining ring H3-6-3 are annular iron plates, and the inner diameter of the spring 3-6-2 is the same as that of the retaining ring G3-6-1 and the retaining ring H3-6-3. One side wall of the retaining ring G3-6-1 is concentrically welded to one end of the spring 3-6-2, and the other end of the spring 3-6-2 is concentrically welded to one side wall of the retaining ring H3-6-3. The switching spring 3-6 is sleeved outside the rotating shaft 3-3, such that the non-welded side wall of the retaining ring G3-6-1 abuts against the side wall of the C-shaped switching bushing 3-4. At this time, the switching spring 3-6 is also in a relaxed state, and the elastic force is greater than that of the positioning spring 3-5.

[0089] As Figure 11 - 12As shown, the anti-loosening and tightening component 3-7 includes a sleeve 3-7-1; a spring 3-7-2; a tail clamp 3-7-3; a tail cover 3-7-4; a tightening member 3-7-5; a torsion spring 3-7-6; and a torsion spring pin 3-7-7. The sleeve 3-7-1 includes a triple variable cross-section pipe 3-7-1-1, a large arc-shaped steel plate 3-7-1-2, and a torsion spring base 3-7-1-3. The triple variable cross-section pipe 3-7-1-1 is an iron pipe with a triple variable cross-section inner wall and an outer diameter slightly larger than the outer diameter of the retaining ring H3-6-3. It includes a relatively thin wall section 3-7-1-1-1, a thick wall section 3-7-1-1-2, and a relatively thick wall section 3-7-1-1-3.The inner wall of the thicker wall section 3-7-1-1-3 is provided with threads and is threadedly connected to the threaded end of the rotating shaft 3-3; the inner wall diameter of the middle thicker wall section 3-7-1-1-2 is slightly larger than the outer diameter of the extension rod 3-2-2 and smaller than the outer diameter of the large retaining ring 3-7-2-1; the outer wall of the tail end of the thin wall section 3-7-1-1-1 is provided with threads and is threadedly connected to the tail end cover 3-7-4; the large arc-shaped steel plate 3-7-1-2 is an arc-shaped steel plate with an outer diameter equal to the inner diameter of the thin wall section 3-7-1-1-1. The arc length of the cross-section of the arc-shaped steel plate is less than the 180-degree arc length of the inner diameter of the cross-section of the thin wall section 3-7-1-1-1. The large arc-shaped steel plates 3-7-1-2 are fixed in a horizontally arranged group in opposite directions on the inner wall of the thin wall section 3-7-1-1-1. The spacing between the two large arc-shaped steel plates 3-7-1-2 forms an upper slideway N and a lower slideway P. The vertical distance between the two slideways is slightly larger than the vertical distance between the tail card limit plates 3-7-3-1-2 and 3-7-3-1-3, ensuring that the tail card limit plates 3-7-3-1-2 and 3-7-3-1-3 are pushed into the upper slideway N and the lower slideway P without rotation; a rectangular window 3-7-1-1-1-1 is opened above the upper slideway N of the large arc-shaped steel plate 3-7-1-2 of the thin wall section 3-7-1-1-1 of the three-variable cross-section pipe 3-7-1-1; the torsion spring base is an annular sleeve 3-7-1-3, which is welded to both sides of one end of the rectangular window 3-7-1-1-1-1 for fixing the torsion spring 3-7-6, the pressing member 3-7-5, and the torsion spring pin 3-7-5; a torsion spring support platform 3-7-1-1-1-3 is arranged on the right side of the rectangular window 3-7-1-1-1-1 near the torsion spring base for installing the torsion spring 3-7-6; a rectangular wall groove 3-7-1-1-1-2 is opened on the inner wall on the right side of the rectangular window 3-7-1-1-1-1 perpendicular to and adjacent to the torsion spring support surface for supporting the pressing member 3-7-5; with the rectangular window 3-7-1-1-1-1 in the middle of the outer circumference of the thin wall section 3-7-1-1-1 of the three-variable cross-section pipe 3-7-1-1 as a reference, three rows of welding holes 3-7-1-1-1-4 are respectively opened on both sides of it. Two welding holes 3-7-1-1-1-4 are arranged in each row. The center points of the two holes in each row are located in the same circular cross-section of the three-variable cross-section pipe 3-7-1-1 and on the same outer circumference. The central angles formed by the center lines connecting the center points of the two holes in each row and the center of the circular cross-section are 60 degrees. The diameter of each hole is 3 mm. After the two large arc-shaped steel plates 3-7-1-2 are fixed in position as shown in the figure, the two large arc-shaped steel plates 3-7-1-2 and the three-variable cross-section pipe 3-7-1-1 are welded and fixed from each welding hole 3-7-1-1-1-4 by laser welding technology to form the upper slideway N and the lower slideway P.

[0090] As Figure 13As shown, the tightening member 3-7-5 includes a limit stop 3-7-5-1 and a tightening control pressing plate 3-7-5-2. The tightening control pressing plate 3-7-5-2 includes a ramp section 3-7-5-2-1 and a horizontal section 3-7-5-2-2. A limit stop 3-7-5-1 is provided at the lower mouth flush position at one end of the horizontal section 3-7-5-2-2. The limit stop 3-7-5-1 is inserted into the rectangular wall groove 3-7-1-1-1-2 to play a role in limiting the tightening member 3-7-5. An arc-shaped shaft hole 3-7-5-2-3 is opened in the horizontal direction at the upper mouth of the ramp section 3-7-5-2-1 for inserting the torsion spring 3-7-6. The lowest point of the lower mouth of the ramp section 3-7-5-2-1 is slightly lower than the highest point of the surface of the tail card limit plate 3-7-3-1-2, which is convenient for sliding into the upper slope groove M of the tail card limit plate 3-7-3-1-2 for tightening work.

[0091] As Figure 14 shown, the spring 3-7-2 includes a large retaining ring 3-7-2-1; a spring body 3-7-2-2; and a small retaining ring 3-7-2-3. The large retaining ring 3-7-2-1 is an annular iron plate with an inner diameter the same as that of the spring body 3-7-2-2, and an outer diameter larger than the inner diameter of the thick-walled section 3-7-1-1-2 of the three-variable cross-section pipe 3-7-1-1 and smaller than the inner diameter of the two large arc-shaped plates fixedly arranged horizontally opposite to each other on the inner wall of the thin-walled section 3-7-1-1-1 of the three-variable cross-section pipe 3-7-1-1. The small retaining ring 3-7-2-3 is an annular iron plate with an inner diameter the same as that of the spring body 3-7-2-2 and slightly larger than the outer diameter of the extension rod 3-2-2. The extension rod 3-2-2 can pass through the work, and the outer diameter is slightly smaller than the shortest vertical straight-line distance between the two stiffening plates 3-7-3-1-4. During work, it can lean against the "middle" belly side of the connecting plate 3-7-3-1-1.

[0092] One side wall of the large retaining ring 3-7-2-1 is concentrically welded and fixed to one end of the spring body 3-7-2-2, and one side wall of the small retaining ring 3-7-2-3 is concentrically welded and fixed to the other end of the spring body 3-7-2-2. The spring 3-7-2 is sleeved on the tail end of the T-shaped lock pin extension 3-2 and is located inside the thin-walled section 3-7-1-1-1 of the three-variable cross-section pipe 3-7-1-1, and its elastic force is less than that of the positioning spring 3-5 and less than that of the switching spring 3-6.

[0093] As Figure 15 - 16As shown, the tail card 3-7-3 includes a card frame 3-7-3-1, a V-shaped card head 3-7-3-2, a card frame including a limit plate J3-7-3-1-2, a limit plate K3-7-3-1-3, a stiffening plate 3-7-3-1-4, and a connecting plate 3-7-3-1-1. The limit plate J3-7-3-1-2 and the limit plate K3-7-3-1-3 are small arc-shaped steel plates, and their width is slightly smaller than the spacing width of the two oppositely arranged large arc-shaped steel plates 3-7-1-2 of the thin-walled section 3-7-1-1-1 of the casing 3-7-1, which is convenient for placement and sliding. The upper surface of the limit plate J3-7-3-1-2 is provided with a slope groove M, which is used for the tightening piece 3-7-5 to tighten the tail clamp 3-7-3 and limit the displacement of the T-shaped lock pin 3-1. The stiffening plate 3-7-3-1-4 is a triangular steel plate, which is used to strengthen and fix the limit plate J3-7-3-1-2, the limit plate K3-7-3-1-3 and the connecting plate 3-7-3-1-1. The connecting plate 3-7-3-1-1 is a middle ring plate connecting the upper and lower two vertical plates, like The diameter of the hole in the ring plate is slightly larger than that of the limit tail rod 3-2-3 and smaller than that of the extension rod 3-2-2, which is convenient for the limit tail rod 3-2-3 to pass through. Flat ends are arranged horizontally opposite each other at 180 degrees on both sides of the "Zhong" belly, and are welded and fixed with V-shaped clamps 3-7-3-2. The V-shaped clamps 3-7-3-2 are made of spring steel and are horizontally opposite to each other and welded and fixed with the flat ends on both sides of the "Zhong" belly. The inward part of the clamp end of the V-shaped clamp 3-7-3-2 is set as a rounded corner 3-7-3-2-1 to reduce friction with the spherical end of the limit tail rod 3-2-3, which is convenient for positioning the limit slot 3-2-3-1. The outward part is set as a right angle 3-7-3-2-1 to increase resistance and prevent it from falling out of the slot after being positioned with the limit slot 3-2-3-1.

[0094] like Figure 17 As shown, the tail seal 3-7-4 includes a threaded cap 3-7-4-1 and a positioning block 3-7-4-2. The positioning block 3-7-4-2 is welded and fixed in the center of the inner side of the threaded cap 3-7-4-1. The threaded cap 3-7-4-1 is threadedly connected to the outer wall of the thin-walled section 3-7-1-1-1 of the sleeve 3-7-1. When the positioning block 3-7-4-2 is in place, the spring 3-7-2 in the sleeve 3-7-1 is relaxed, and the positioning block 3-7-4-2 lightly contacts the V-shaped clamping head 3-7-3-2 of the tail clamp.

[0095] like Figure 18 As shown, the torsion spring 3-7-6 is a conventional torsion spring, and its strength is smaller than that of the positioning spring 3-5.

[0096] like Figure 19 As shown, the torsion spring latch 3-7-7 includes an insert rod 3-7-7-1 and a nut 3-7-7-2, and the insert rod 3-7-7-1 is a screw rod with a thread at the tail end.

[0097] Specific operation implementation

[0098] The scaffolding installation steps are as follows:

[0099] 1. As shown in Figure 20 , position the tightening piece 3-7-5 at the rectangular window 3-7-1-1-1-1 of the sleeve 3-7-1, so that the limiting block 3-7-5-1 of the tightening piece is inserted into the rectangular wall groove 3-7-1-1-1-2 of the triple variable cross-section pipe 3-7-1-1. At this time, insert the rod 3-7-7-1 of the torsion spring pin 3-7-7 successively through the base 3-7-1-3 of the torsion spring pin, the torsion spring 3-7-6, and the shaft hole of the tightening piece 3-7-5 to fix the tightening piece 3-7-5, and tighten and fix the nut 3-7-7-2 with the rod 3-7-7-1.

[0100] 2. As shown in Figure 21 , with the upper ear 3-3-1 and the lower ear 3-3-2 of the rotating shaft 3-3 taking the vertical 180 degrees as a reference, rotate the rotating shaft 3-3 counterclockwise by less than 45 degrees and fit it into the C-shaped switching bushing 3-4. The upper ear 3-3-1 and the lower ear 3-3-2 are in contact with the countersunk hole 3-4-1-7 surface of the C-shaped switching bushing 3-4. Rotate the rotating shaft 3-3 back to make the upper ear 3-3-1 and the lower ear 3-3-2 in the vertical 180-degree state. At this time, the upper ear 3-3-1 and the lower ear 3-3-2 of the rotating shaft are transferred into the 7-shaped limiting blocks 3-4-2 and 3-4-3 of the C-shaped switching bushing 3-4, and the rotating shaft 3-3 is positioned in front of the first short slideway 3-4-1-1 and the second short slideway 3-4-1-2 of the C-shaped switching bushing 3-4. At this time, push the rotating shaft 3-3 into the first short slideway 3-4-1-1 and the second short slideway 3-4-1-2 of the C-shaped switching bushing 3-4.

[0101] 3. As shown in Figure 22 , push the T-shaped locking pin 3-1 into the rotating shaft 3-3 along the two semicircular sliding grooves 3-4-1-6 in the horizontal direction of the C-shaped switching bushing 3-4, so that the flat end of the limiting cross bar 3-1-1 is in contact with the C-shaped switching bushing 3-4.

[0102] 4. As shown in Figure 23 , thread the T-shaped locking pin extension 3-2 onto the T-shaped locking pin 3-1 until the first threaded section 3-1-2-1 of the T-shaped locking pin is completely screwed into the internal threaded section of the T-shaped locking pin extension 3-2. At this time, the internal right-angled line in the limiting card slot on the limiting tail rod 3-2-3 of the T-shaped locking pin extension is perpendicular to the limiting cross bar 3-1-1 of the T-shaped locking pin.

[0103] 5. As shown in Figure 24 , fit the positioning spring 3-5 over the T-shaped locking pin extension 3-2, so that the retaining ring E 3-5-1 is in contact with the outer wall of the retaining ring 3-2-1 of the T-shaped locking pin extension. At this time, the positioning spring 3-5 is in a relaxed state.

[0104] 6. As shown in Figure 25As shown, the switching spring 3-6 is sleeved outside the rotating shaft 3-3, and the retaining ring G3-6-1 abuts against the side wall of the C-shaped switching bushing 3-4. At this time, the switching spring 3-6 is in a relaxed state.

[0105] 7. As Figure 26 shown, the internal thread of the thicker wall section 3-7-1-1-3 of the triple variable cross-section pipe 3-7-1-1 is screwed and fixed to the external thread 3-3-3-2-1 of the thin wall section 3-3-3-2 of the shaft pipe 3-3. The T-shaped locking pin extension 3-2 passes through the thicker wall section 3-7-1-1-3 and the thick wall section 3-7-1-1-2 of the triple variable cross-section pipe 3-7-1-1 and enters the thin wall section 3-7-1-1-1. At this time, the rectangular window 3-7-1-1-1-1 of the triple variable cross-section pipe 3-7-1-1 faces vertically upward. At this time, the switching spring 3-6 is compressed, the retaining ring G3-6-1 abuts tightly against the side wall of the C-shaped switching bushing 3-4, the retaining ring H3-6-3 abuts tightly against the outer side wall of the thicker wall section 3-7-1-1-3 of the triple variable cross-section pipe 3-7-1-1, and the switching spring is in a compressed state. When releasing the elastic force, it will generate a reverse thrust on the triple variable cross-section pipe 3-7-1-1 and the C-shaped switching bushing 3-4. At this time, the rotating shaft 3-3 is integrally connected with the triple variable cross-section pipe 3-7-1-1 by thread connection and receives the same force. In this way, the upper ear 3-3-1 and the lower ear 3-3-2 of the rotating shaft 3-4 are in a tension static state in the first short slideway 3-4-1-1 and the second short slideway 3-4-1-2 of the C-shaped switching bushing 3-4.

[0106] Meanwhile, the positioning spring 3-5 sleeved outside the T-shaped lock pin extension 3-2 is also compressed. The retaining ring E 3-5-1 abuts against the outer wall of the retaining ring 3-2-1 of the T-shaped lock pin extension 3-2, and the retaining ring F 3-5-3 abuts against one side wall of the thick-wall section 3-7-1-1-2 of the triple variable cross-section pipe 3-7-1-1 close to the thicker-wall section 3-7-1-1-3. The positioning spring 3-5 is in a compressed state. When releasing the elastic force, it will generate a reverse thrust on the T-shaped lock pin extension 3-2 and the sleeve 3-7-1. Since the elastic force of the positioning spring 3-5 is less than that of the switching spring 3-6, and the triple variable cross-section pipe 3-7-1-1 is stationary due to being threadedly connected to the rotating shaft 3-3, the reverse thrust of the positioning spring 3-5 acts on the T-shaped lock pin extension 3-2 at this time, pushing it to make the retaining ring 3-2-1 of the T-shaped lock pin extension 3-2 closely adhere to the variable cross-section inside the rotating shaft 3-3. At this time, since the T-shaped lock pin 3-1 and the T-shaped lock pin extension 3-2 have been fixed by threaded connection, the limit crossbar 3-1-1 of the T-shaped lock pin also generates the same displacement along the two semi-circular chutes 3-4-1-6 in the horizontal direction of the C-shaped switching bushing 3-4. Since the elastic force of the positioning spring 3-5 is less than that of the switching spring 3-6, when the retaining ring 3-2-1 of the T-shaped lock pin extension 3-2 closely adheres to the variable cross-section inside the rotating shaft 3-3, the T-shaped lock pin extension 3-2 is stationary due to the stationary rotating shaft 3-3, and then the T-shaped lock pin 3-1 will also be in the in-place stationary state.

[0107] 8. As Figure 27 shown, the spring 3-7-2 is sleeved from the thin-wall section 3-7-1-1-1 of the triple variable cross-section pipe 3-7-1-1 onto the outside of the T-shaped lock pin extension 3-2, so that the wall of the large retaining ring 3-7-2-1 of the spring 3-7-2 abuts against one side wall of the thick-wall section of the triple variable cross-section pipe 3-7-1-1 close to the thin-wall section.

[0108] 9. As Figure 28 shown, the limiting plate J 3-7-3-1-2 and the limiting plate K 3-7-3-1-3 of the tail card 3-7-3 are aligned with the slideway N and the slideway P formed between the two large arc steel plates 3-7-1-2 in the thin-wall section 3-7-1-1-1 of the triple variable cross-section pipe 3-7-1-1, and then the tail card 3-7-3 is pushed inward so that the tail card connecting plate 3-7-3-1-1 gently touches the small retaining ring 3-7-2-3 of the spring.

[0109] 10. As Figure 29As shown, screw the tail cover 3-7-4 into the external thread of the thin-wall section 3-7-1-1-1 of the triple variable cross-section pipe 3-7-1-1. After tightening, the position control block 3-7-4-2 is in place and gently touches the V-shaped chuck 3-7-3-2 of the tail clamp 3-7-3. The tail clamp connecting plate 3-7-3-1-1 gently adheres to the small retaining ring 3-7-2-3 of the spring 3-7-2. At this time, the spring 3-7-2 in the sleeve 3-7-1 is in a relaxed state. Thus, the pin anti-loosening assembly 3 is assembled.

[0110] 11. As Figure 30 shown, horizontally place the assembled pin anti-loosening assembly 3 under the end socket joint 2 of the horizontal rod. Align the bolt holes 3-4-1-5 opened vertically on both sides of the C-shaped switching bushing 3-4 with the threaded holes 2-1 opened on the lower surface of the end socket joint 2 of the horizontal rod, and then connect and fix them with the screw 4. At this time, the position of the T-shaped locking pin 3-1 should be the position where the pin 1 is locked and in place and located in the U-shaped bayonet 1-1 of the pin.

[0111] 12. As Figure 31As shown, the horizontal rod end buckle joint 2 is inserted into the disc, and the pin 1 is inserted vertically from the top of the horizontal rod end buckle joint 2 (state one). As the pin 1 is inserted and gradually widens, the T-shaped lock pin 3-1 is squeezed backward. At this time, the positioning spring 3-5 receives the squeezing force, and the T-shaped lock pin 3-1 and the T-shaped lock pin extension 3-2 are displaced backward synchronously. At this time, the limiting tail rod 3-2-3 moves backward along with it, passes through the circular hole in the middle of the tail card connecting plate 3-7-3-1, and continues to contact the clamping head 3-7-3-2 of the tail card 3-7-3. Since the inner angle of the clamping head 3-7-3-2 is rounded, the tail end of the limiting tail rod 3-2-3 is a spherical surface, so that the limiting tail rod 3-2-3 can easily slide into the clamping head 3-7-3-2 of the tail card, so that the tail card clamping head 3-7-3-2 is located in the limiting clamping slot of the limiting tail rod 3-2-3 (state two). As the latch 1 is tightened into place, the T-shaped lock pin 3-1 and the T-shaped lock pin extension 3-2 are pushed in the opposite direction by the positioning spring 3-5, pushing the T-shaped lock pin 3-1 and the T-shaped lock pin extension 3-2 to their original static position. At this time, although the tail card 3-7-3 and the limiting tail rod 3-2-3 are stuck, since the elastic force of the spring 3-7-2 is less than the elastic force of the positioning spring 3-5, the tail card 3-7-3 will be carried by the T-shaped lock pin extension 3-2 to slide forward along the slide formed between the large arc-shaped steel plates 3-7-1-2 in the sleeve 3-7-1. Since the highest point on the upper surface of the limiting plate J3-7-3-1-2 of the tail card 3-7-3 is higher than the lowest point on the lower surface of the tightening piece 3-7-5 after assembly, the limiting plate J3-7-3-1-2 will hit the tightening piece 3-7-5 when the tail card 3-7-3 slides forward. Since the elastic force of the positioning spring 3-5 is greater than the pressure of the torsion spring 3-7-6, the positioning spring 3-5 pushes the T-shaped lock pin extension 3-2 and drives the tail card 3-7-3 to move forward when the reverse thrust works, which will break through the pressure of the torsion spring 3-7-6, forcing the tensioning member 3-7-5 to rise, and the tail card 3-7-3 continues to move forward until the limiting cross bar 3-1-1 of the T-shaped lock pin 3-1 is located at the U-shaped bayonet 1-1 of the latch 1, and the tensioning member 3-7-5 is just located in the slope groove M on the upper surface of the tail card limiting plate J3-7-3-1-2. At this time, the tensioning member 3-7-5 is tightened in place, and the reverse thrust of the spring 3-7-2 also acts on the tail card 3-7-3, so that the tail card 3-7-3 and the tensioning member 3-7-5 are tightened (state three). In this way, a disc-type scaffolding latch anti-loosening device that is easy to lock and dismantle is installed.

[0112] If significant vibration occurs during construction, the T-shaped locking pin 3-1 and the T-shaped locking pin extension 3-2 will move backward due to the vibration. However, the limiting tail rod 3-2-3 on the T-shaped locking pin extension 3-2 is locked by the tail clamp 3-7-3, and the tail clamp 3-7-3 is supported by the tensioning member 3-7-5, preventing it from moving. Therefore, the movement of the T-shaped locking pin 3-1 and the T-shaped locking pin extension 3-2 is also restricted, thus ensuring that the latch 1 will not loosen, thereby ensuring the stability of the scaffolding and ensuring construction safety.

[0113] Scaffolding removal steps:

[0114] 1. If Figure 32 As shown, press the horizontal section 3-7-5-2-2 of the top clamp 3-7-5, and lift the tail end of the slope section 3-7-5-2-1 of the top clamp 3-7-5 through the lever principle, so that the top clamp 3-7-5 is separated from the groove M of the limit plate J3-7-3-1-2 of the tail clamp. (State 4 (Press))

[0115] 2. Push the assembly of shaft 3-3 and anti-loosening and tightening assembly 3-7 forward. Shaft 3-3 is then pushed out of the first and second short slideways 3-4-1-1 and 3-4-1-2 of the C-shaped shaft 3-4 to engage with the 7-shaped blocks 3-4-2 and 3-4-3. At this point, switching spring 3-6 remains compressed. (State 5 (Push))

[0116] 3. Continue to push forward and rotate the shaft 3-3 and the anti-loosening and tightening component 3-7 assembly to the right 90 degrees until it cannot be rotated anymore. At this time, the upper ear 3-3-1 and the lower ear 3-3-2 of the shaft fit in with the straight-line block A3-4-4 and the straight-line block B3-4-5 of the C-shaped shaft 3-4 and are located at the front end of the first long slide 3-4-1-3 and the second long slide 3-4-1-4 of the C-shaped shaft 3-4. At the same time, the tail card 3-7-3 in the anti-loosening and tightening component 3-7 is restricted by the slideway formed between the large arc-shaped steel plates and rotates in the same direction, and the tail rod 3-2-3 cannot rotate because the T-shaped locking pin 3-1 is locked in the horizontal direction. Therefore, at this time, the tail card 3-7-3 is passively disengaged from the tail card limiting slot due to rotation. When disengaging, the diameter of the limiting tail rod 3-2-3 is larger than the distance between the tail card bayonet 3-7-3-2, which prompts the tail card bayonet 3-7-3-2 to expand outward. When the tail card bayonet 3-7-3-2 is passively disengaged from the tail card limiting slot due to rotation 90 degrees, the tail card 3-7-3 receives the reverse thrust of the spring 3-7-2 and is no longer constrained by the limiting slot, thereby leaving the limiting tail rod 3-2-3 and becoming the initial state. At this time, the spring 3-7-2 is in a relaxed state.

[0117] 4. Release the forward thrust. When the switching spring 3-5 is compressed and releases its elastic force, it generates an opposite thrust on the C-shaped rotating shaft 3-4 and the anti-loosening and tightening assembly 3-7. Since the C-shaped switching bushing 3-4 is fixed to the end buckle joint 2 of the horizontal rod and is in a static state, the end of the switching spring 3-6 in contact with the side wall of the C-shaped switching bushing 3-4 is also in a static state. Therefore, at this time, the anti-loosening and tightening assembly 3-7 is pushed by the switching spring 3-6 to generate a backward displacement. Since the anti-loosening and tightening assembly 3-7 is threadedly connected and fixed to the rotating shaft 3-3, the rotating shaft 3-3 is driven by the anti-loosening and tightening assembly 3-7 to generate a backward displacement. At this time, the upper ear 3-3-1 and the lower ear 3-3-2 of the rotating shaft enter the first long slideway 3-4-1-3 and the second long slideway 3-4-1-4 of the C-shaped switching bushing 3-4. Due to the retaining ring 3-2-1 of the T-shaped lock pin extension 3-2 being acted on by the reverse thrust of the positioning spring 3-5 and being closely attached to the variable cross-section part of the inner wall of the rotating shaft 3-3, as the rotating shaft 3-3 moves backward, the T-shaped lock pin extension 3-2 also generates a backward displacement at the same time. Since the T-shaped lock pin extension 3-2 is threadedly connected and fixed to the T-shaped lock pin 3-1, the T-shaped lock pin 3-1 also generates a backward displacement at the same time. At this time, the limiting crossbar 3-1-1 of the T-shaped lock pin 3-1 disengages from the U-shaped bayonet 1-1 of the bolt 1. (State six (rotation, loosening))

[0118] 5. Remove the bolt 1 from above the end buckle joint 2 of the horizontal rod to complete the dismantling work of the scaffolding.

[0119] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "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 application 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 to the present application.

[0120] Those skilled in the art know that in addition to implementing the system and its various devices, modules, and units provided by the present invention in the form of pure computer-readable program code, the method steps can be logically programmed to enable the system and its various devices, modules, and units provided by the present invention to be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers, etc. to achieve the same functions. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a kind of hardware component, and the devices, modules, and units included therein for implementing various functions can also be regarded as the structures within the hardware component; the devices, modules, and units for implementing various functions can also be regarded as both software modules for implementing the method and structures within the hardware component.

[0121] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined arbitrarily with each other.

Claims

1. A locking and demolition - convenient anti - loosening device for the socket pin of a button - locked scaffolding, characterized in that, Comprising: A bolt (1), a horizontal rod end snap joint (2), a bolt anti-loosening component (3), and a screw (4); The horizontal rod end snap joint (2) is clamped on a disc with a through hole on the scaffold, and the bolt anti-loosening component (3) is fixedly installed at a position flush with the lower bottom surface of the horizontal rod end snap joint (2) through the screw (4); A U-shaped bayonet (1-1) is provided at the lower end of the bolt (1); the bolt anti-loosening component (3) includes a T-shaped locking pin (3-1); When the bolt (1) is inserted through and sequentially inserted into the horizontal rod end snap joint (2), the disc, and the bolt anti-loosening component (3), the T-shaped locking pin (3-1) of the bolt anti-loosening component (3) is snapped into the U-shaped bayonet (1-1) to realize the locking of the device; when the T-shaped locking pin (3-1) is separated from the U-shaped bayonet (1-1) under the action of the bolt anti-loosening component (3), the disassembly of the device can be realized.

2. The anti-loosening device for the socket of the button-lock type scaffolding according to claim 1, wherein, The bolt anti-loosening component (3) further includes a T-shaped locking pin extension (3-2), a rotating shaft (3-3), a C-shaped switching bushing (3-4), a positioning spring (3-5), a switching spring (3-6), and an anti-loosening tightening component (3-7); The rotating shaft (3-3) is sleeved into the C-shaped switching bushing (3-4), and the T-shaped locking pin (3-1) is pushed horizontally along the C-shaped switching bushing (3-4) into the rotating shaft (3-3) so that one end of the T-shaped locking pin (3-1) fits with the C-shaped switching bushing (3-4); the T-shaped locking pin extension (3-2) is threadedly connected to the T-shaped locking pin (3-1), and the end of the T-shaped locking pin extension (3-2) is connected to the anti-loosening tightening component (3-7); the positioning spring (3-5) is sleeved outside the T-shaped locking pin extension (3-2), and the switching spring (3-6) is sleeved outside the rotating shaft (3-3).

3. The anti-loosening device for the socket pin of the button-lock scaffolding according to claim 2, characterized in that, The T-shaped locking pin (3-1) includes a limiting cross bar (3-1-1) and a connecting vertical bar (3-1-2); One side of the limiting cross bar (3-1-1) is a U-shaped arc surface for inserting and clamping with the U-shaped bayonet (1-1) provided on the bolt, and the other side is a flat surface, which is welded and fixed in the middle with the connecting vertical bar (3-1-2).

4. The anti-loosening device for the socket pin of the button-lock type scaffolding according to claim 3, wherein, The T-shaped locking pin extension (3-2) includes a retaining ring (3-2-1), an extension rod (3-2-2), and a limiting tail rod (3-2-3); a first threaded section (3-1-2-1) is provided at the tail end of the connecting vertical bar (3-1-2); The retaining ring (3-2-1) is an annular iron plate; a second threaded section (3-2-2-1) is provided on the inner wall of one end of the extension rod (3-2-2), and it passes through the inner wall of the retaining ring (3-2-1) and is welded and fixed in alignment and concentricity in the middle. The length of the second threaded section (3-2-2-1) is the same as the length of the first threaded section (3-1-2-1) at the tail end of the connecting vertical bar (3-1-2) of the T-shaped locking pin (3-1) and is threadedly connected thereto. The other end of the extension rod (3-2-2) is welded and fixed to the limiting tail rod (3-2-3); One end of the limiting tail rod (3-2-3) is flat-mouthed (3-2-3-2), and the other end is hemispherical (3-2-3-3). The flat-mouthed (3-2-3-2) end is centered and welded and fixed to the non-threaded end of the extension rod (3-2-2). A limiting slot (3-2-3-1) is horizontally opened opposite to the hemispherical (3-2-3-3) end. One inner corner of the limiting slot (3-2-3-1) is set as an arc (3-2-3-1-1), and one inner corner is a right angle (3-2-3-1-2), which is used in combination with the anti-loosening and tightening component (3-7). When the T-shaped locking pin (3-1) and the T-shaped locking pin extension (3-2) are screwed tightly in place, the limiting cross bar (3-1-1) is perpendicular to the corner line of the limiting slot (3-2-3-1).

5. The anti-loosening device for the socket pin of the button-lock type scaffolding according to claim 3, wherein, The shaft tube (3-3-3) includes a thick-walled section (3-3-3-1) and a thin-walled section (3-3-3-2); the rotating shaft (3-3) includes an upper ear piece (3-3-1), a lower ear piece (3-3-2), and a shaft tube (3-3-3); the C-shaped switching shaft sleeve (3-4) includes a C-shaped sleeve frame (3-4-1), a linear limiting block A (3-4-4), a linear limiting block B (3-4-5), a 7-shaped limiting block C (3-4-2), and a 7-shaped limiting block D (3-4-3); The upper ear piece (3-3-1) and the lower ear piece (3-3-2) are iron blocks with one end being a flat end and the other end being an arc end. The flat ends of the upper ear piece (3-3-1) and the lower ear piece (3-3-2) are respectively welded and fixed to the outer wall of the thick-walled section (3-3-3-1) of the shaft tube (3-3-3) in a 180-degree opposite direction, and the arc ends are used in combination with the first long slideway (3-4-1-3), the second long slideway (3-4-1-4), the first short slideway (3-4-1-1), and the second short slideway (3-4-1-2) arranged inside the C-shaped switching shaft sleeve (3-4). The arc shape can reduce the frictional resistance of the contact surface and ensure smooth pushing and sliding; The outer wall of the thick-walled section (3-3-3-1) is welded and fixed to the flat ends of the upper ear piece (3-3-1) and the lower ear piece (3-3-2). The outer wall of the tail end of the thin-walled section (3-3-3-2) is provided with a thread (3-3-3-2-1), which is threadedly connected to the anti-loosening and tightening component (3-7); A circular counterbore (3-4-1-7) is opened at the center of the C-shaped sleeve frame (3-4-1) for installing the rotating shaft (3-3). The horizontal direction of the circular counterbore (3-4-1-7) is opposite to the first long slideway (3-4-1-3) and the second long slideway (3-4-1-4); the vertical direction of the circular counterbore (3-4-1-7) is opposite to the first short slideway (3-4-1-1) and the second short slideway (3-4-1-2); Two semi-circular chutes (3-4-1-6) are horizontally opened opposite to each other inside the C-shaped sleeve frame (3-4-1), and the semi-circular chutes (3-4-1-6) are used in combination with the semi-circular arc surfaces (3-1-1-1) provided at both ends of the limiting cross bar (3-1-1) of the T-shaped locking pin (3-1); The linear limit block A (3-4-4) is welded to the lower outer side of the first long slideway (3-4-1-3) of the circular countersunk hole (3-4-1-7), flush with the lower groove surface of the first long slideway (3-4-1-3). The linear limit block B (3-4-5) is welded to the upper outer side of the second long slideway (3-4-1-4) of the circular countersunk hole (3-4-1-7), flush with the upper groove surface of the second long slideway (3-4-1-4). When the rotating shaft (3-3) rotates, the linear limit block A (3-4-4) and the linear limit block B (3-4-5) play a limiting role, enabling the upper earpiece (3-3-1) and the lower earpiece (3-3-2) of the rotating shaft to smoothly enter the first long slideway (3-4-1-3) and the second long slideway (3-4-1-4) respectively. The 7-shaped limit block C (3-4-2) is welded to the left outer side of the second short slideway (3-4-1-2) of the circular countersunk hole (3-4-1-7), flush with the left groove surface of the second short slideway (3-4-1-2). The 7-shaped limit block D (3-4-3) is welded to the right outer side of the first short slideway (3-4-1-1) of the circular countersunk hole (3-4-1-7), flush with the right groove surface of the first short slideway (3-4-1-1). When the rotating shaft (3-3) is pushed and rotates, the 7-shaped limit block C (3-4-2) and the 7-shaped limit block D (3-4-3) play a limiting role, facilitating the switching of the slideways by the upper earpiece (3-3-1) and the lower earpiece (3-3-2) of the rotating shaft (3-3) according to the working state requirements.

6. The anti-loosening device for the socket of the socket-and-button scaffolding according to claim 2, characterized in that, The positioning spring (3-5) includes a retaining ring E (3-5-1), a spring (3-5-2), and a retaining ring F (3-5-3). The retaining ring E (3-5-1) and the retaining ring F (3-5-3) are annular iron plates, and the inner diameter of the spring (3-5-2) is the same as that of the retaining ring E (3-5-1) and the retaining ring F (3-5-3). One side wall of the retaining ring E (3-5-1) is concentrically welded to one end of the spring (3-5-2), and the other end of the spring (3-5-2) is concentrically welded to one side wall of the retaining ring F (3-5-3). The positioning spring (3-5) is sleeved outside the T-shaped lock pin extension (3-2), making the non-welded side wall of the retaining ring E (3-5-1) abut against the side wall of the T-shaped lock pin extension (3-2). At this time, the positioning spring (3-5) is in a relaxed state, and its elastic force is less than that of the switching spring (3-6).

7. The anti-loosening device for the socket pin of the button-connected scaffolding according to claim 2, wherein, The switching spring (3-6) includes a retaining ring G (3-6-1), a spring (3-6-2), and a retaining ring H (3-6-3). The retaining ring G (3-6-1) and the retaining ring H (3-6-3) are annular iron plates, and the inner diameter of the spring (3-6-2) is the same as that of the retaining ring G (3-6-1) and the retaining ring H (3-6-3); one side wall of the retaining ring G (3-6-1) is concentrically welded to one end of the spring (3-6-2), and the other end of the spring (3-6-2) is concentrically welded to one side wall of the retaining ring H (3-6-3). The switching spring (3-6) is sleeved outside the rotating shaft (3-3) so that the non-welded side wall of the retaining ring G (3-6-1) abuts against the side wall of the C-shaped switching bushing (3-4). At this time, the switching spring (3-6) is also in a relaxed state, and its elastic force is greater than that of the positioning spring (3-5).

8. The anti-loosening device for the socket pin of the button-lock type scaffolding according to claim 2, wherein The anti-loosening and tightening assembly (3-7) includes a sleeve (3-7-1), a spring (3-7-2), a tail clip (3-7-3), a tail cover (3-7-4), a tightening member (3-7-5), a torsion spring (3-7-6), and a torsion spring pin (3-7-7); The sleeve (3-7-1) includes a three-variable cross-section pipe (3-7-1-1), a large arc-shaped steel plate (3-7-1-2), and a torsion spring base (3-7-1-3); the three-variable cross-section pipe (3-7-1-1) has wall segments with different thicknesses on the inner wall, including a thinner wall segment (3-7-1-1-1), a thick wall segment (3-7-1-1-2), and a relatively thick wall segment (3-7-1-1-3); The spring (3-7-2) is sleeved from the thin wall segment (3-7-1-1-1) of the three-variable cross-section pipe (3-7-1-1) onto the outside of the T-shaped locking pin extension (3-2) so that one side of the spring (3-7-2) abuts against one side wall of the thick wall of the three-variable cross-section pipe (3-7-1-1) near the thin wall segment; The tail clip (3-7-3) is connected to the other side of the spring (3-7-2), and the tail cover (3-7-4) is screwed onto the external thread of the thin wall segment (3-7-1-1-1) of the three-variable cross-section pipe (3-7-1-1). After tightening, it is connected to the tail clip (3-7-3); The torsion spring (3-7-6) is installed on both sides of the tightening member (3-7-5) through the torsion spring pin (3-7-7); the tightening member (3-7-5) acts on the top of the sleeve (3-7-1) to play a role of limiting and tightening.

9. The anti-loosening device for the socket of the button-lock scaffolding according to claim 8, characterized in that, The spring (3-7-2) includes a large retaining ring (3-7-2-1), a spring (3-7-2-2), and a small retaining ring (3-7-2-3); One side wall of the large retaining ring (3-7-2-1) is concentrically welded and fixed to one end of the spring (3-7-2-2), and one side wall of the small retaining ring (3-7-2-3) is concentrically welded and fixed to the other end of the spring (3-7-2-2).

10. The anti-loosening device for the socket pin of the button-lock type scaffolding according to claim 8, characterized in that, The tightening member (3-7-5) includes a limit stop block (3-7-5-1) and a tightening control pressure plate (3-7-5-2); the tail clip (3-7-3) includes a clip frame (3-7-3-1); a V-shaped chuck (3-7-3-2); the clip frame includes a limit plate J (3-7-3-1-2), a limit plate K (3-7-3-1-3), a stiffening plate (3-7-3-1-4), and a connecting plate (3-7-3-1-1); The top pressing control pressing plate (3-7-5-2) includes a slope section (3-7-5-2-1) and a horizontal section (3-7-5-2-2); a limit stop block (3-7-5-1) is arranged at the lower mouth flush with one end of the horizontal section (3-7-5-2-2), and the limit stop block (3-7-5-1) is inserted into a rectangular wall groove (3-7-1-1-1-2) arranged in the thin wall section (3-7-1-1-1), playing the role of a limit top pressing member (3-7-5); an arc-shaped shaft hole (3-7-5-2-3) is opened in the horizontal direction at the upper mouth of the slope section (3-7-5-2-1) for inserting a torsion spring (3-7-6); the lowest point of the lower mouth of the slope section (3-7-5-2-1) is slightly lower than the highest point of the surface of the tail card limit plate (3-7-3-1-2), facilitating sliding into the tail card limit plate (3-7-3-1-2) to achieve the top pressing work. The limit plate J (3-7-3-1-2) and the limit plate K (3-7-3-1-3) are small arc-shaped steel plates; a slope groove M is arranged on the upper surface of the limit plate J (3-7-3-1-2) for restricting the displacement of the T-shaped locking pin (3-1) by the top pressing member (3-7-5); the stiffening plate (3-7-3-1-4) is a triangular steel plate for strengthening the fixation of the limit plate J (3-7-3-1-2), the limit plate K (3-7-3-1-3) and the connecting plate (3-7-3-1-1); the connecting plate (3-7-3-1-1) is provided with a ring plate with holes, and the diameter of the holes in the ring plate is larger than the diameter of the limit tail rod (3-2-3) and smaller than the diameter of the extension rod (3-2-2), facilitating the passing of the limit tail rod (3-2-3).

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