Scaffold connection assembly and scaffold

Abstract

The present invention discloses a scaffolding connection assembly and a scaffolding, comprising a crossbar connecting head, a wedge block and a crank arm. The plug-in portion and the cantilever are extended into the insertion hole of the disc fastener, and an external force is applied to the wedge block to drive the crank arm to rotate along the inflection point. After the cantilever abuts against the insertion hole, the wedge block continuously generates a tensioning force on the cantilever and the plug-in portion, thereby realizing rapid and stable installation of the crossbar connecting head and the disc fastener. During the disassembly process, a reverse force is applied to the wedge block, and the crank arm can rotate in the reverse direction along the inflection point, thereby realizing rapid disassembly of the crossbar and the vertical pole, thereby improving the assembly and disassembly efficiency of the scaffolding.

Description

Technical Field

[0001] The invention relates to the technical field of construction, in particular to a scaffold connection component and a scaffold. Background Art

[0002] Scaffolding is a construction support built on the construction site for workers to operate and solve horizontal and vertical transportation. It uses several horizontal and vertical bars to build a construction support on the facade of the building, and the ends of the horizontal bars and the vertical bars are connected by connectors.

[0003] Commonly used connecting parts include cup-buckle scaffolding, steel pipe fasteners and straight-insert disc-buckle type; the cup-buckle scaffolding includes an upper bowl mouth and a lower cup buckle fixed to the vertical pole, a cross bar joint connected to the cross bar is installed between the lower cup buckle and the upper cup buckle, and then the upper cup buckle and the lower cup buckle are fixed by limit pins. The cross bar joint is easily worn after repeated use, which can easily lead to node instability and safety accidents, and the installation efficiency is low; the steel pipe fastener includes two interconnected pipe buckles to fix the cross bar and the vertical pole, and the cross bar and the vertical pole at the node position are eccentrically set, which reduces its bearing capacity, and requires an anti-slip structure to be installed under the steel pipe fastener, so the installation process is very cumbersome, and the steel pipe fastener is very easy to lose.

[0004] The straight-insert type disc buckle includes a circular connecting disc, a rod end joint and a pin. During installation, the rod end joint connected to the cross bar is inserted into the socket of the connecting disc, and then the pin is passed through the plug and the socket of the connecting disc. Finally, the pin is clamped in the socket of the circular connecting disc by hammering. In order to ensure the stability of the node, a large external force needs to be applied, which also causes the problem of difficulty in disassembly. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a scaffold connection assembly and a scaffold, which realize stable connection and rapid assembly and disassembly of the scaffold.

[0006] The present invention is achieved through the following technical solutions:

[0007] A scaffold connection assembly includes a crossbar connection head, a wedge block and a crank arm;

[0008] The crossbar connector is formed with a plug-in portion extending downward, and the crossbar connector is formed with a wedge hole for installing a wedge block;

[0009] The crank arm comprises two cantilevers arranged at an angle, a receiving cavity is arranged inside the crossbar connector, the crank arm is arranged in the receiving cavity and can rotate along the turning point, one cantilever extends out of the receiving cavity and is located at one side of the plug-in portion, and the wedge block is located between the plug-in portion and the crank arm;

[0010] When the insertion portion and the cantilever outside the accommodating cavity are located in the insertion hole of the disc fastener, when the wedge block moves along the first direction of the wedge hole, the cantilever is driven to rotate so that the cantilever is engaged with the insertion hole of the disc fastener.

[0011] Preferably, the crank arm includes a first cantilever and a second cantilever arranged at an angle, the first cantilever is located in the accommodating cavity of the crossbar connector, and the second cantilever is located on one side of the plug-in portion;

[0012] A wedge surface that slidably matches with the wedge block is arranged on one side of the second cantilever, and a locking surface that matches with the insertion hole is arranged on the other side of the second cantilever.

[0013] Preferably, a protruding snap-fitting portion is provided at the lower end of the locking surface, and when the cantilever is snap-fitted with the insertion hole of the disc fastener, the snap-fitting portion is located at the bottom of the disc fastener.

[0014] Preferably, the weight of the first cantilever is greater than the weight of the second cantilever.

[0015] Preferably, a side of the wedge block close to the crank arm is formed with an inclined surface that matches the wedge surface.

[0016] Preferably, a stopper is provided at the lower end of the wedge block, and the stopper is located at the bottom of the cantilever.

[0017] Preferably, a rivet is provided at the lower end of the wedge.

[0018] Preferably, an elastic component is provided on the crank arm and is located in the accommodating cavity, and is used to drive the crank arm to rotate to separate the cantilever from the socket.

[0019] A method for using a scaffolding connection assembly, before installation, the crank arm uses the lever principle to position the wedge block at an initial position;

[0020] During installation, the plug-in portion and the cantilever are inserted into the socket of the disc fastener, the wedge block is moved along the first direction, the cantilever is driven to rotate and tension is applied to the cantilever and the plug-in portion, so that the cantilever is engaged with the socket of the disc fastener.

[0021] A scaffolding comprises a crossbar, a vertical bar, a disc fastener and the scaffolding connection assembly;

[0022] The disc fastener is fixedly sleeved on the vertical pole, the cross bar is fixedly connected to the end of the cross bar connector, and the plug-in portion and the cantilever outside the accommodating cavity are inserted into the insertion hole of the disc fastener and are locked.

[0023] Preferably, the disc fastener comprises a disc body and a vertical rod hole formed in the center thereof, and a plurality of insertion holes are evenly distributed on the circumference of the disc body, and the insertion holes are connected to the vertical rod hole.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] The invention discloses a scaffolding connection assembly, comprising a cross bar connecting head, a wedge block and a crank arm, wherein the wedge block is installed in the wedge hole of the cross bar connecting head, the crank arm is arranged in the cross bar connecting head and rotates along the inflection point, and the lever action formed by the rotation of the crank arm enables its end portion to be positioned at the initial position of the wedge block, so that the plug-in portion and the cantilever arm are extended into the insertion hole of the disc fastener, and the cross bar connecting head and the wedge block are synchronously installed, thereby improving the installation efficiency, and then an external force is applied to the wedge block to drive the crank arm to rotate along the inflection point. After the cantilever arm abuts against the insertion hole, the wedge block continuously generates a tensioning force on the cantilever arm and the plug-in portion, so that the cross bar connecting head and the disc fastener form a stable connection node, and during the disassembly process, a reverse force is applied to the wedge block, and the crank arm rotates in the reverse direction along the inflection point under the action of the elastic force. When the crank arm rotates, the wedge block is positioned by the lever action, and the locking state of the plug-in portion and the disc fastener is released, so that the cross bar and the vertical pole can be quickly disassembled, thereby improving the disassembly and assembly efficiency of the scaffolding.

[0026] Furthermore, a clamping portion is provided at the lower end of the locking surface, and the clamping portion and the disc fastener form a limit vertically to avoid the overall separation of the cross bar connector and the disc fastener under a strong external force, thereby improving the safety of the scaffolding.

[0027] Furthermore, the weight of the first cantilever is greater than that of the second cantilever. During the disassembly process, a reaction force is applied to the wedge block, and the crank arm is rotated in the opposite direction under the action of the elastic force and the wedge block's own gravity, so that the second cantilever is separated from the socket, and the engagement state between the cantilever and the socket is automatically released. At the same time, the lever action formed by the rotation of the crank arm positions the wedge block to prevent the wedge block from falling under the action of gravity and locking the plug-in part and the socket again.

[0028] Furthermore, a stop platform is provided at the lower end of the wedge block and is located at the bottom of the cantilever. The cantilever is arranged on the moving path of the stop platform to limit the wedge block to avoid separation from the wedge block under the action of external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of the scaffold assembly of the present invention;

[0030] Figure 2 is an internal structural diagram of the connection assembly of the present invention;

[0031] Figure 3 This is an internal structural diagram of the connection assembly of the present invention in a locked state;

[0032] Figure 4 It is a structural schematic diagram of the disc fastener of the present invention;

[0033] Figure 5 It is a structural schematic diagram of the crossbar connector of the present invention;

[0034] Figure 6 It is a structural schematic diagram of the abutment position of the cross bar connector and the disc fastener of the present invention;

[0035] Figure 7 A three-dimensional diagram of a crank arm of the present invention;

[0036] Figure 8 It is a structural diagram of the abutment area between the crank arm and the disc fastener of the present invention;

[0037] Fig. 9 It is a structural diagram of the wedge block of the present invention;

[0038] Fig.10 The state diagram of the crank arm when the wedge block is replaced in the present invention.

[0039] In the figure: 1, vertical pole; 2, cross bar; 3, wedge; 4, cross bar connector; 5, disc fastener; 6, crank arm; 7, elastic component;

[0040] 30. Retaining portion; 31. Riveting hole; 32. Retaining platform; 33. First inclined surface; 34. Arc transition surface; 35. Second inclined surface; 36. Anti-slip portion;

[0041] 40, end joint; 41, wedge hole; 42, fitting portion; 43, plug-in portion; 44, pin hole; 46, positioning surface;

[0042] 51. Pole hole; 52. Insertion hole; 53. Locking wall;

[0043] 61. fixing portion; 62. first cantilever; 63. axial hole; 64. second cantilever; 65. blocking surface; 66. wedge surface; 67. limiting surface; 68. locking surface; 69. clamping portion. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the embodiments of the present application, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0048] In the description of the embodiments of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0051] See also Figure 1 A scaffolding connection assembly includes a crossbar connection head 4, a wedge block 3 and a crank arm 6.

[0052] One end of the crossbar connector 4 is used to connect with the end of the crossbar, and the other end of the crossbar connector 4 is formed with a plug-in portion 43 extending downward, and the crossbar connector 4 is formed with a wedge hole 41 for installing the wedge block 3;

[0053] The crank arm 6 includes two cantilevers set at an angle, and a accommodating cavity is set inside the cross bar connector 4. The crank arm 6 is set in the accommodating cavity and can rotate along the inflection point. One cantilever extends out of the accommodating cavity and is located on one side of the plug-in portion 43. The wedge block 3 is located between the plug-in portion 43 and the crank arm. When the wedge block moves along the first direction of the wedge hole, the cantilever is driven to rotate so that the cantilever is clamped with the disc fastener 5.

[0054] The above-mentioned scaffolding connection assembly uses the expansion principle to apply tension to the plug-in part and the socket of the disc fastener, so that the two form a stable connection node. At the same time, the crank arm can rotate around the turning point to form a lever effect, and the lever effect is used to locate the position of the wedge block to achieve rapid assembly and disassembly of the connection node.

[0055] When installing the scaffolding connection assembly, the plug-in portion 43 and the cantilever outside the accommodating cavity are extended into the socket of the disc fastener 5, and an external force is applied to the wedge block 3 to make it move in a first direction, that is, the direction in which the wedge block moves downward along the wedge hole. The movement of the wedge block 3 along the wedge hole drives the crank arm to rotate along the inflection point, and generates a tensioning force on the cantilever and the plug-in portion located in the socket, so that the cantilever is engaged with the socket of the disc fastener, thereby realizing rapid installation of the crossbar and the vertical pole. During the disassembly process, a reverse force is applied to the wedge block to make it move in the opposite direction of the first direction (upward), the tensioning force in the slot area disappears, and the crank arm can rotate in the opposite direction along the inflection point, thereby realizing rapid assembly and disassembly of the crossbar and the vertical pole.

[0056] See also Figure 7 and 8 The above-mentioned crank arm 6 includes a first cantilever 62 and a second cantilever 64 arranged in an L shape. The first cantilever is located in the accommodating cavity of the cross bar connector 4, and the second cantilever 64 is located on one side of the plug-in portion. The connecting end of the first cantilever 62 and the second cantilever 64 is an inflection point. An axial hole 63 is provided at the inflection point of the crank arm, and a rotating shaft is installed in the axial hole. The crank arm 6 is rotatably connected to the cross bar connector 4 through the rotating shaft.

[0057] An elastic component 7 is provided at the free end of the first cantilever and is located in the accommodating cavity of the cross bar connector 4. The bottom surface of the first cantilever is a positioning surface 67, and the inner wall of the second cantilever 64 is a locking surface 68. The positioning surface 67 and the locking surface 68 are located on the same side of the crank arm and are connected by an arc transition surface. The outer wall of the second cantilever 64 is a wedge surface 66, and the wedge surface 66 cooperates with the wedge block. When the wedge block moves, the driving force generated is applied to the wedge surface, causing the crank arm to rotate around the inflection point, and the second cantilever rotates toward the edge of the disc fastener. During the rotation process, the elastic component 7 is compressed until the locking surface 68 of the second cantilever abuts against the side wall of the socket of the disc fastener, thereby realizing the clamping connection between the crank arm and the disc fastener. When disassembling, the wedge block moves in the opposite direction. Under the action of the elastic component and the gravity of the wedge block itself, the crank arm rotates in the opposite direction, thereby realizing the rapid separation of the plug-in part and the disc fastener.

[0058] The elastic component 7 is a spring, which is vertically arranged at the free end of the first cantilever. The upper end of the spring is higher than the top surface of the first cantilever. The upper end of the spring abuts against the inner top surface of the accommodating cavity and is in a pre-stressed state. When the second cantilever is engaged with the socket of the disc fastener, the spring is compressed. When the wedge block moves in the opposite direction, the spring resets and drives the crank arm to move in the opposite direction. When the positioning surface 46 of the first cantilever contacts the bottom surface of the accommodating cavity, the crank arm stops rotating, releasing the locking state of the second cantilever and the socket, thereby realizing the rapid disassembly of the quick cross bar connector 4 and the disc fastener.

[0059] A fixing portion 61 is provided at the end of the first cantilever, a positioning rod is provided on the fixing portion, the spring is sleeved on the positioning rod, the positioning rod guides the compression state of the spring, and in this embodiment, the fixing portion is a rectangular structure.

[0060] In another embodiment, a spring hole is provided in the fixing portion, and the lower end of the spring is fixedly connected in the spring hole. The spring and the spring hole are fixedly connected by welding, riveting or interference fitting.

[0061] The elastic component should be understood as any elastic force-applying body, such as elastic rubber.

[0062] In another embodiment, the weight of the first cantilever is greater than that of the second cantilever. When the wedge block moves in the reverse direction, due to the greater weight of the first cantilever, the crank arm is driven to move in the reverse direction under the action of gravity, thereby releasing the locking state of the plug-in part and the socket, and realizing the rapid disassembly of the cross bar connector 4 and the disc fastener.

[0063] The lower end of the locking surface 68 is provided with a snap-on portion 69 protruding toward one side of the cross bar. When the second cantilever rotates and makes the locking surface 68 abut against the side wall of the socket, the snap-on portion 69 is located on the bottom surface of the disc fastener and forms an upper and lower positioning effect with the disc fastener, thereby preventing the scaffolding connection assembly from being separated from the disc fastener as a whole, thereby improving the stability of the scaffolding connection.

[0064] See also Figure 5 and 6 The crossbar connector 4 includes an end joint 40 and a plug-in portion 43. One end of the end joint is an open structure, and its open end is fixedly connected to the end of the crossbar. The plug-in portion 43 is located at the lower part of the other end of the end joint. An end of the plug-in portion away from the crossbar is formed with a fitting portion 42 that cooperates with the vertical rod, and an arc-shaped fitting surface that cooperates with the vertical rod is formed on the fitting portion. The wedge hole 41 vertically penetrates the end joint and the plug-in portion 43, and forms a receiving groove with an opening on one side of the plug-in portion 43, and the receiving groove is connected to the receiving cavity. A coaxial pin hole 44 is formed on the side wall of the end joint, and the shaft hole 63 of the crank arm and the pin hole 44 are connected by a rotating shaft. The first cantilever is located in the receiving cavity, and the second cantilever is located on the open side of the receiving groove. The wedge block is mounted in the wedge hole, and the lower end of the wedge block is located in the receiving groove. When the wedge block moves downward along the receiving groove, it can achieve a push effect on the wedge surface 66 of the second cantilever, so that it rotates along the rotating shaft, thereby realizing the clamping of the plug-in portion and the socket.

[0065] In this embodiment, the end joint is welded to the cross bar 2 as a whole. In other embodiments, the end joint can be connected to the cross bar 2 in other ways, such as by bolts, or by pinning to form a fixed connection.

[0066] See also Fig. 9The wedge block can be vertically movably arranged in the wedge hole 41. A first inclined surface 33 and a second inclined surface 35 are formed on the side wall of the wedge block close to the cross bar. The second inclined surface 35 is located at the upper part of the first inclined surface 33. The first inclined surface 33 and the second inclined surface 35 have the same angle with the vertical direction. The first inclined surface 33 and the second inclined surface 35 are in different planes. The upper end of the first inclined surface 33 and the lower end of the second inclined surface 35 are connected by a circular arc transition surface 34. The first inclined surface 33 and the wedge surface 66 are slidably matched.

[0067] When the wedge block 3 moves vertically downward in the wedge hole 41, the first inclined surface 33 pushes the wedge surface 66, driving the second cantilever of the crank arm to rotate toward the edge of the disc fastener. The tensioning force generated on the cantilever and the plug-in part during the movement of the wedge block causes the second cantilever to be clamped in the plug hole of the disc fastener.

[0068] The lower end of the wedge block has a stopper 30, and the stopper 30 and the lower end of the first inclined surface form a stopper 32. The stopper 32 is located below the second cantilever. The stopper 32 is used to limit the moving position of the wedge block when the cross bar connector and the disc fastener are separated, so as to prevent the wedge block from being separated from the wedge hole. Specifically, during the disassembly operation, an upward force is applied to the wedge block to move it upward. During its movement, the crank arm rotates counterclockwise under the action of gravity and elastic force, and the wedge surface of the crank arm always maintains sliding contact with the first inclined surface. When the stopper surface 65 at the lower end of the second cantilever contacts the stopper 32, the crank arm stops rotating. At the same time, the stopper surface 65 limits the moving direction of the wedge block through the stopper 32, so as to prevent the wedge block from being separated from the upper end of the wedge hole due to misoperation. It should be noted that the structural size of the resisting part 30 is smaller than the size of the wedge hole to avoid the problem of being unable to assemble. A rivet hole 31 is provided on the resisting part 30, and a rivet is provided in the rivet hole 31 to avoid the wedge falling off from the cross bar connector due to human interference.

[0069] The upper end of the wedge block is provided with a stopper 36, the size of which is larger than the upper end size of the wedge hole, to avoid excessive external force applied to the wedge block during installation, causing the wedge block to deform and fall off from the lower end of the wedge hole.

[0070] In this embodiment, the two sides of the anti-slip part are flush with the two sides of the wedge block, and the side of the anti-slip part close to the cross bar extends horizontally, so that the horizontal width of the anti-slip part is greater than the size of the wedge hole in the corresponding direction. When the external force is too large, the wedge block moves downward, and the anti-slip part is stuck at the mouth of the wedge hole to prevent the wedge block from entering the wedge hole as a whole under the action of the external force. A convex structure can also be provided on both sides of the wedge block, so that the thickness of the anti-slip part is greater than the width of the wedge hole, thereby preventing the wedge block from falling off from the lower end of the wedge hole.

[0071] When the cross bar connector and the disc fastener are separated, an upward force is applied to the wedge block, and the wedge block moves upward along the wedge hole. At this time, the spring of the first cantilever is reset, and under the action of the spring force, the second cantilever rotates toward the wedge block, and the clamping action between the second cantilever and the jack is released. At the same time, the wedge surface of the second cantilever always remains in contact under the action of the spring force. When the wedge block continues to move upward, the stop platform 32 abuts against the lower end of the second cantilever, forming a limit for the wedge block to prevent it from continuing to move and separating from the wedge hole. A stop surface 65 is provided at the lower end of the second cantilever, and the stop surface 65 contacts the stop platform 32 to form a vertical positioning for the wedge block.

[0072] The disc fastener 5 includes a disc body and a vertical rod hole 51 formed in the center thereof. A plurality of insertion holes are evenly distributed on the circumference of the disc body. The insertion hole 52 is connected with the vertical rod hole 51. The vertical rod 1 is passed through the vertical rod hole 51 and welded to the disc body 31. The side wall of the insertion hole close to the edge of the disc body is a locking wall 53 that cooperates with the locking surface of the second cantilever. When the wedge block moves downward along the wedge hole, the first inclined surface 33 drives the inclined surface 66 of the crank arm to rotate the second cantilever. When the locking surface 68 contacts and abuts the locking wall 53, the cross bar connector 4 is clamped with the disc fastener.

[0073] In this embodiment, four sockets are provided on the disc body, and the four sockets and the vertical pole holes form a cross hole. The four sockets 52 can match and connect four scaffolding connection components to achieve four cross bars 2 set up around the vertical pole 10 with the vertical pole 10 as the reference line.

[0074] The following is a detailed description of the quick assembly and disassembly process of the scaffolding connection assembly provided by the present invention and the replacement process of the wedge block.

[0075] See also Figure 2 The end of the cross bar connector is fixedly connected to the end of the cross bar, the wedge block is installed in the wedge hole of the cross bar connector, the crank arm is set in the cross bar connector and rotates along the inflection point to form a lever effect. The crank arm uses the lever effect to position the wedge surface at its end to the initial position of the wedge block. At this time, the wedge block is in a stable state. The initial position of the wedge block is the position of the wedge block in the wedge hole when the abutment surface 65 of the crank arm is in contact with the wedge abutment platform.

[0076] When assembling the scaffolding, the end of the crossbar connector is fixedly connected to the end of the crossbar, and the plug-in portion 43 of the crossbar connector and the second cantilever are inserted into the socket 52 of the disc fastener. At the same time, the wedge block is also in a predetermined installation position to achieve preliminary positioning. At this time, the spring is in a pre-stressed state, the limiting surface 67 of the first cantilever contacts the bottom surface of the accommodating cavity of the end joint 40, and the wedge surface 66 of the second cantilever contacts the first inclined surface 33 of the wedge block. Compared with the existing straight-insert disc buckle method of first installing the rod end joint and then installing the pin, the scaffolding connection assembly of the present invention has a wedge block located in the wedge hole so that the two form an integral structure. The wedge block can be pre-installed during the process of inserting the end joint into the disc buckle, thereby improving the installation efficiency. Moreover, the scaffolding connection assembly of the present invention can be operated by one person, while the existing straight-insert disc buckle requires two people to cooperate in installation to improve safety, or a single person needs to hold the crossbar with one hand and move the pin with the other hand for installation. This installation method greatly increases the risk of high-altitude installation and also reduces the installation efficiency. Therefore, the scaffolding connection assembly of the present invention reduces the difficulty of installation and reduces labor costs.

[0077] participate Figure 3 After the cross bar connector is connected to the disc fastener, a downward external force is applied to the upper end of the wedge block 3 by hammering or mechanical pressure, so that the wedge block moves downward along the wedge hole. During the movement of the wedge block, the first inclined surface 33 slides along the wedge surface and drives the second cantilever 64 to move toward the locking wall 53 side of the socket. When the locking surface 68 of the second cantilever 64 abuts against the locking wall 53 of the socket, the locking between the disc fastener 5 and the cross bar 2 is completed, so that the cross bar 2 and the vertical pole 1 have a stable connection relationship, solving the problem of safety hazards.

[0078] When disassembling the crossbar and the vertical bar, an upward thrust is applied to the lower end of the wedge block by hammering or mechanical pressure, so that the wedge block 3 moves upward to cancel the tension between the second cantilever and the plug-in part. The wedge block 3 moves upward and the spring is reset. Under the action of the elastic force, the crank arm rotates in the opposite direction, and the locking surface 68 of the second cantilever 64 is separated from the locking wall 53 of the socket, thereby creating a space between the two, so that the second cantilever can withdraw from the socket of the disc fastener. At the same time, the second cantilever is always in sliding contact with the first inclined surface of the wedge block during the rotation process. When the abutting surface at the lower end of the second cantilever and the abutting platform of the wedge block are in contact with each other, under the action of the elastic force, the crank arm forms a lever to position the wedge block, thereby preventing the wedge block from falling under the action of gravity and locking the plug-in part and the socket again, thereby realizing the scaffolding connection assembly. Quick detachment from the disc fastener 5; secondly, the abutment surface of the second cantilever forms a vertical positioning for the wedge block, avoiding the separation of the wedge block and the cross bar connector during the disassembly process, solving the problem of the easy loss of the pin of the existing straight-insertion type disc buckle; in addition, compared with the single-person disassembly method of the existing straight-insertion type disc buckle, it is necessary to hold the cross bar with one hand and hammer the pin with the other hand. Since the scaffolding installation and disassembly belongs to high-altitude work, safety accidents are very likely to occur when working with both hands and the disassembly efficiency is low, and the pin is very likely to fall from a high altitude under the action of gravity hammering, which also poses a safety hazard to the staff below. The crank arm of the scaffolding connection assembly of the present invention positions the wedge block through the lever action, which well solves the problem of the wedge block falling off during the disassembly process, while improving the disassembly efficiency and the safety of scaffolding disassembly, and reducing the disassembly cost.

[0079] See also Fig.10 Because the first inclined surface of the wedge block is worn out during repeated use and cannot exert effective thrust on the second cantilever, it needs to be replaced. During replacement, the crank arm is rotated manually and the spring is compressed until the wedge surface is in a vertical state and the abutment surface 65 is misaligned with the abutment platform in the horizontal direction. At this time, the abutment surface 65 is misaligned with the abutment platform in the vertical direction. The wedge block is disassembled from the upper end of the wedge hole and separated from the cross bar connector, and a new wedge block is installed to complete the replacement of the wedge block.

[0080] The present invention also protects a scaffolding, comprising uprights 1, cross bars 2, disc fasteners 5 and scaffolding connection components, wherein the disc fasteners 5 are fixedly sleeved on the uprights 1, and the ends of the cross bars are connected to the scaffolding connection components. When the scaffolding is spliced, the plug-in portion of the scaffolding connection components is inserted into the disc fasteners 5 and locked.

[0081] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A scaffolding connection assembly, characterized in that: It comprises a crossbar connector (4), a wedge (3) and a crank arm (6); The crossbar connector (4) is formed with a plug-in portion (43) extending downward, and the crossbar connector (4) is formed with a wedge hole (41) for installing a wedge block (3); The crank arm (6) comprises two cantilevers arranged at an angle, a receiving cavity is arranged inside the crossbar connector (4), the crank arm (6) is arranged in the receiving cavity and can rotate along the turning point, one cantilever extends out of the receiving cavity and is located on one side of the plug-in portion (43), and the wedge block (3) is located between the plug-in portion (43) and the crank arm (6); When the plug-in portion (43) and the cantilever outside the accommodating cavity are located in the insertion hole of the disc fastener, the wedge block (3) moves along the first direction of the wedge hole (41), driving the cantilever to rotate so that the cantilever is engaged with the insertion hole (52) of the disc fastener (5); The crank arm (6) comprises a first cantilever (62) and a second cantilever (64) which are arranged at an angle, the first cantilever (62) being located in the accommodating cavity of the crossbar connector (4), and the second cantilever (64) being located on one side of the plug-in portion (43); the connecting end of the first cantilever (62) and the second cantilever (64) being a turning point, an axis hole (63) being provided at the turning point of the crank arm (6), a rotating shaft being installed in the axis hole (63), and the crank arm (6) being rotatably connected to the crossbar connector (4) via the rotating shaft; A wedge surface (66) that slidably cooperates with the wedge block (3) is provided on one side of the second cantilever (64), and a locking surface (68) that cooperates with the insertion hole (52) is provided on the other side of the second cantilever (64); the weight of the first cantilever (62) is greater than the weight of the second cantilever (64), and when the wedge block (3) moves in the reverse direction, the first cantilever (62) is heavier and, under the action of gravity, drives the crank arm (6) to rotate in the reverse direction; A protruding clamping portion (69) is provided at the lower end of the locking surface (68); when the second cantilever (64) is clamped with the insertion hole (52) of the disc fastener (5), the clamping portion (69) is located at the bottom of the disc fastener (5); The free end of the first cantilever (62) is provided with an elastic component (7) and is located in the accommodating cavity of the crossbar connector (4); the bottom surface of the first cantilever (62) is a limiting surface (67); the inner wall of the second cantilever (64) is a locking surface (68); the limiting surface (67) and the locking surface (68) are located on the same side of the crank arm (6) and are connected by an arc transition surface; the outer wall of the second cantilever (64) is a wedge surface (66); the wedge surface (66) cooperates with the wedge block (3); when the wedge block (3) moves, the driving force generated is applied to the wedge surface (66), so that the crank arm (6) rotates around the inflection point, and at the same time, the second cantilever (64) rotates toward the edge of the disc fastener (5); the elastic component The component (7) is a spring, which is vertically arranged at the free end of the first cantilever (62). The upper end of the spring is higher than the top surface of the first cantilever (62). The upper end of the spring abuts against the inner top surface of the accommodating cavity and is in a pre-stressed state. When the second cantilever (64) is engaged with the insertion hole (52) of the disc fastener (5), the spring is compressed. When the wedge block (3) moves in the reverse direction, the spring is reset and drives the crank arm (6) to rotate in the reverse direction. When the limiting surface (67) of the first cantilever (62) contacts the bottom surface of the accommodating cavity, the crank arm (6) stops rotating, and the locking state between the second cantilever (64) and the insertion hole (52) is released, thereby realizing the rapid disassembly of the rapid cross bar connector (4) and the disc fastener (5). A blocking portion (30) is provided at the lower end of the wedge block (3), and the blocking portion (30) is located at the bottom of the second cantilever (64); The method for using the scaffolding connection assembly is as follows: before installation, the crank arm (6) uses the lever principle to position the wedge block (3) at an initial position; During installation, the plug-in portion (43) and the second cantilever (64) are inserted into the insertion hole (52) of the disc fastener (5), the wedge block (3) is moved along the first direction, the second cantilever (64) is driven to rotate and a tensioning force is applied to the second cantilever (64) and the plug-in portion (43), so that the second cantilever (64) is engaged with the insertion hole (52) of the disc fastener (5).

2. A scaffolding connection assembly according to claim 1, characterized in that: A side of the wedge block (3) close to the crank arm (6) is formed with an inclined surface that matches the wedge surface (66).

3. A scaffolding connection assembly according to claim 1, characterized in that: The lower end of the wedge block (3) is provided with a rivet.

4. A scaffold, characterized in that: It comprises a cross bar, a vertical bar, a disc fastener and a scaffold connection assembly according to any one of claims 1 to 3; The disc fastener (5) is fixedly sleeved on the vertical pole (1), the cross bar (2) is fixedly connected to the end of the cross bar connector (4), and the plug-in portion (43) and the second cantilever (64) outside the accommodating cavity are inserted into the insertion hole (52) of the disc fastener (5) and are locked.

Images