A scaffold for formwork support

Abstract

This application relates to the field of high-rise support formwork engineering technology, specifically disclosing a scaffold for formwork support. The scaffold includes multiple rods and multiple connecting rods. Each connecting rod includes a first fixing member, a second fixing member, an abutment member, and a ring assembly. The inner shaft of the second fixing member is inserted into the shaft sleeve of the first fixing member. The abutment member is installed in a through hole in the shaft sleeve wall. The ring assembly includes a housing, a first elastic member, and a pressure module. The housing is located outside the shaft sleeve. The first elastic member, a pressure chamber, and a relaxation chamber are installed between the housing and the shaft sleeve. When the relaxation chamber faces the abutment member, the distance between the first and second fixing members can be adjusted, at which point the first elastic member is compressed. The first elastic member can rebound and drive the housing, causing the pressure chamber to face the abutment member. The pressure module then drives the abutment member to press against the inner shaft, thus fixing the first and second fixing members together. This connecting rod can connect rods of different distances without bending the rods, resulting in a stable scaffold structure after assembly.

Description

Technical Field

[0001] This application relates to the field of high-rise support formwork engineering technology, and more specifically, to a scaffold for formwork support. Background Technology

[0002] In the construction industry, the application of high-support formwork engineering (referred to as "high formwork") to provide temporary support for cast-in-place concrete is becoming increasingly common, with a trend towards increasingly taller scaffolds, heavier upper loads, and larger casting spans. High formwork is distinguished from general formwork engineering mainly by the different forms of formwork supports; it refers to scaffolding heights exceeding 8m, spans exceeding 18m, and total construction loads exceeding 15kN / m². 2 and above, concentrated line load 20kN / m 2 High-rise formwork is used for formwork support projects of 100° and above. High-rise formwork is often used for cast-in-place concrete structures such as roofs and floors with high ceilings, transfer floor structures, large cantilevered and large cross-section concrete beams and slabs, cast-in-place concrete box girders for turning ramps in urban overpasses or highway bridges, and subway station floor slabs.

[0003] High-formwork scaffolding includes the formwork itself and the scaffolding supporting it. High-formwork scaffolding typically uses multiple steel pipes connected horizontally, vertically, and diagonally, with adjacent pipes secured using connecting rods. Current connecting rods generally consist of two interlocking clamps to connect adjacent or intersecting pipes. However, the length of these connecting rods (the distance between the two clamps) is generally not adjustable. Because the interlocking pipes form a multi-layered structure, a pipe requiring connection may or may not have interlayered pipes at another location, resulting in significant differences in the distance between the pipes. Connecting these pipes with larger distances typically involves bending the pipes to shorten the distance. However, long-term use can lead to uneven bending of the pipes, weakening the scaffolding's rigidity or stability, potentially causing cracking or bursting of concrete components, or even the collapse of the entire scaffolding. Summary of the Invention

[0004] Given that the length of existing scaffolding connectors is not adjustable, when connecting steel pipes with large distances, the distance is usually shortened by bending the steel pipes. Over time, this can lead to uneven bending of the steel pipes, which can easily cause the scaffolding to have weak rigidity or insufficient stability. This application proposes a scaffolding for formwork support that uses adjustable-length connectors to connect steel pipes of different distances, thereby improving the situation where steel pipes need to be bent to shorten the distance for connection. To this end, this application adopts the following technical solution.

[0005] A scaffold for formwork support, the scaffold comprising a plurality of cross-connected rods and a plurality of linkages for connecting the rods.

[0006] Each of the linkages includes a first fixing member, a second fixing member, an abutment member, and a ring assembly.

[0007] The first fixing member includes a shaft sleeve. The second fixing member includes an inner shaft. The inner shaft is inserted into the shaft sleeve.

[0008] The side wall of the shaft cylinder has a through hole. The abutment is installed in the through hole and extends out of the through hole on both sides.

[0009] The ring assembly includes a housing, a first elastic element, and a pressure application module. The housing is fitted around the outside of the shaft cylinder. The inner wall of the housing has an inward protrusion facing the shaft cylinder. The shaft cylinder has an outward protrusion facing the housing. The first elastic element rests between the inward and outward protrusions.

[0010] The housing and the shaft sleeve enclose and form a communicating pressure chamber and a relaxation chamber. The pressure application module is installed in the housing sleeve, facing the pressure application chamber.

[0011] Moving the housing causes the relaxation chamber to face the abutment, allowing the inner shaft to slide relative to the cylinder, and compressing the first elastic element. The rebound force of the first elastic element drives the housing to move, causing the pressure chamber to face the abutment, and the pressure module can apply pressure to the abutment, causing the abutment to press against the inner shaft.

[0012] By employing the above technical solution, pulling the housing causes the inner convex portion of the housing to move closer to the outer convex portion of the shaft cylinder. This compresses the first elastic element, causing the relaxation chamber to face the abutment. Since the abutment is not under pressure, the second fixing element can be pulled, changing the depth of the inner shaft insertion into the shaft cylinder, thus adjusting the distance between the first and second fixing elements. Then, releasing the housing causes the first elastic element to rebound, moving the inner convex portion of the housing away from the outer convex portion of the shaft cylinder. This brings the pressure chamber to face the abutment. At this point, the pressure module applies pressure to the abutment, causing the abutment to press against the inner shaft, thus fixing the first and second fixing elements together. Through this method, the distance between the first and second fixing elements of the linkage can be adjusted, allowing connection of elements at different distances without bending the rods, resulting in a stable assembled scaffold structure.

[0013] As an improvement to the scaffolding used for formwork support, the inner wall of the shaft cylinder is provided with a sliding groove. The inner shaft has an outwardly flared portion. The outwardly flared portion is inserted into the sliding groove and can move along the sliding groove.

[0014] By adopting the above technical solution, the relative movement of the first fixing member and the second fixing member is restricted within the slide groove, preventing the first fixing member and the second fixing member from separating from each other.

[0015] As an improvement to the scaffolding used for formwork support, a plurality of equally spaced through holes are provided on the same circumference of the side wall of the shaft cylinder. The scaffolding includes a plurality of abutment members. The plurality of abutment members are installed one by one in the plurality of through holes.

[0016] By adopting the above technical solution, the multiple abutment parts arranged at equal intervals strengthen the abutment force on the inner shaft, making the first fixing part and the second fixing part more secure.

[0017] As an improvement to the scaffolding used for template support, each of the abutments is a fan-shaped ring, and the side of the abutment facing the inner shaft can fit against the outer wall of the inner shaft.

[0018] By adopting the above technical solution, the abutment can fit against the outer wall of the inner shaft, with a large contact surface. Under the same pressure, the friction is greater, making the first and second fixing parts more firmly connected.

[0019] As an improvement to the scaffolding used for template support, the shell has an internally arranged ejector cavity, mounting cavity, connecting cavity, and smoothing cavity that are connected in sequence. The ejector cavity is formed in the inner protrusion. The ejector cavity and the smoothing cavity are connected to the pressure cavity from two different directions.

[0020] The pressure application module includes a linkage component, a second elastic component, a pressure application component, and a third elastic component.

[0021] The linkage includes a main body, and an ejector portion and an insertion portion connected to the main body. The second elastic member is connected to the main body and is both disposed within the mounting cavity. The ejector portion passes through the ejector cavity.

[0022] The pressure-applying member and the third elastic member are connected and both are disposed within the smooth cavity. The pressure-applying member has an inclined groove. The insertion part has an inclined surface. The insertion part passes through the communicating cavity and is inserted into the inclined groove, such that the inclined surface fits against the inclined groove.

[0023] When the pressure chamber faces the abutment, the abutment presses against the ejector, the second elastic member is compressed, the insertion depth of the insertion part into the inclined groove becomes shallower, the third elastic member pushes the pressure member out of the smooth cavity and abuts against the abutment, and the abutment abuts against the inner shaft.

[0024] When the relaxation cavity is directed toward the abutment, the second elastic member extends, pushing the ejector into the pressure cavity, and the insertion part is inserted deeper into the inclined groove, pushing the pressure member back into the smooth cavity.

[0025] By adopting the above technical solution, when the pressure chamber faces the abutting member, the pressure member extends out of the smooth cavity and abuts against the abutting member, and the abutting member abuts against the inner shaft, thus achieving mutual fixation between the first fixing member and the second fixing member. When the relaxation chamber faces the abutting member, due to the squeezing action of the linkage member and the second elastic member on the pressure member, under the structure of the inclined surface conforming to the inclined groove, the pressure member is pushed back into the smooth cavity, so that during the process of repositioning the abutting member relative to the pressure chamber, the pressure member will not obstruct the abutting member from returning to the position facing the pressure chamber.

[0026] As an improvement to the scaffolding used for template support, the connecting cavity is adapted to the shape of the insertion part, and / or the ejection cavity is adapted to the shape of the ejection part, so that the insertion part only moves in and out relative to the inclined groove.

[0027] By adopting the above technical solution, the insertion part only moves in and out relative to the inclined groove, which makes the pushing of the linkage component to the pressure component highly reliable, fast in response, and accurate in pushing distance.

[0028] As an improvement to the scaffolding used for template support, the pressure-applying member is adapted to the shape of the smooth cavity, so that the pressure-applying member moves back and forth in a straight line only along the smooth cavity.

[0029] By adopting the above technical solution, the pressure-applying component moves back and forth in a straight line only along the smooth cavity, so that the position of the pressure-applying component contacting the abutment component is consistent each time. The pressure-applying component can accurately push on the abutment component, with large pressure and precise direction, making the first fixing component and the second fixing component more firmly connected.

[0030] As an improvement to the scaffolding used for template support, the end of the insertion part is provided with an inclined surface to form a tip with an inner angle of 30~45°.

[0031] By adopting the above technical solution, the inclined surface conforms to the inclined groove. The 30-45° inclined surface can effectively allow the insertion part to penetrate deep into the inclined groove, and can effectively push the pressure member to move along the smooth cavity. If the angle is too large, the horizontal component force on the pressure member is small, and it is not easy to push the pressure member. If the angle is too small, the pushing distance of the pressure member is small, and it is not easy to press the pressure member back into the smooth cavity.

[0032] As an improvement to the scaffolding used for template support, when the pressure chamber is facing the abutment, the inclined surface is completely located within the inclined groove.

[0033] By adopting the above technical solution, the linkage will not slip out of the inclined groove of the pressure member during the movement, and can continuously push the pressure member to retract into the smooth cavity or reduce the insertion depth of the pressure member, so that the pressure member extends out of the smooth cavity under the push of the third elastic member to apply pressure to the abutment member.

[0034] As an improvement to the scaffolding used for template support, the width of the pressure chamber is less than the width of the relaxation chamber, which is less than the width of the abutment.

[0035] By adopting the above technical solution, when the abutment faces the pressure chamber, it is pressed and fixed. When the abutment faces the relaxation chamber, it has a large range of motion and is not under pressure, thus eliminating the pressure on the inner shaft and allowing the inner shaft to move relative to the shaft cylinder, i.e., adjusting the distance between the first and second fixing members. The width of the abutment is greater than the width of the relaxation chamber, ensuring that the abutment will not slip out of the through hole in the side wall of the shaft cylinder during movement, allowing the inner shaft, shaft cylinder, and housing to continuously and effectively move back and forth relative to each other.

[0036] In summary, the scaffolding for formwork support described in this application has the following beneficial effects:

[0037] The distance between the first and second fixing parts of the linkage is adjustable, allowing connection of members at different distances without bending them, while maintaining a good straight shape. Scaffolding constructed using this linkage exhibits high rigidity and stability. Tall support formwork erected using this scaffolding provides structural stability and securely supports concrete components. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of one implementation structure of scaffolding.

[0039] Figure 2 for Figure 1 A schematic diagram of the linkage structure in scaffolding.

[0040] Figure 3 for Figure 2 A frontal cross-sectional view of the connecting rod.

[0041] Figure 4 for Figure 3 A cross-sectional schematic diagram of the ring assembly in the connector.

[0042] Figure 5 for Figure 3 The connector is shown in an exploded view after the mating parts are hidden.

[0043] Figure 6 for Figure 4 A schematic diagram of the combined structure of the pressure application module.

[0044] Figure 7 This is a cross-sectional view of the shell from one side.

[0045] Figure 8 To Figure 3 The diagram shows the state of the connecting rod when it pulls the housing and the second fixing member, causing the relaxation cavity to face the abutment member.

[0046] Figure 9 This is a schematic diagram of the structure where four abutment parts are pressed onto the inner shaft.

[0047] Figure 10 This is an enlarged structural diagram of the linkage component.

[0048] Figure 11 This is an enlarged structural schematic diagram of the pressure-applying component.

[0049] Reference numerals: 1. Rod; 2. Connector; 21. First fixing member; 22. Second fixing member; 3. Abutment member; 4. Ring assembly; 211. Shaft cylinder; 221. Inner shaft; 2111. Slide groove; 2111. Outer expansion; 2211. Penetrating hole; 2112. Shell; 41. First elastic member; 42. Pressure module; 43. Inner protrusion; 4101. Outer protrusion; 2113. Pressure chamber; 44. Relaxation chamber; 45. First annular surface; 4102. Second annular surface; 4103. Inclined annular surface; 4104. Upper protruding ring; 4105. Lower protruding ring; 4106. Ejection chamber; 4107. Mounting chamber; 4108. Connecting chamber; 4109. Smooth chamber; 4110. Linkage member; 431. Second elastic member; 432. Pressure member; 433. Third elastic member; 434. Main body; 4311. Ejection part; 4312. Insertion part; 4313. Inclined groove; 4331. Inclined surface; 4314. Detailed Implementation

[0050] The following describes in detail some embodiments of the scaffolding for formwork support according to the present application, with reference to the accompanying drawings.

[0051] like Figure 1 A type of scaffold for formwork support, comprising multiple intersecting members 1, including horizontal, longitudinal, vertical, and diagonal members 1, which may be steel pipes. The scaffold also includes multiple connecting rods 2 for connecting the intersecting, parallel members 1.

[0052] Because the steel pipes of the scaffolding are fixed in a staggered manner longitudinally, laterally, and diagonally, the distances between the connecting rods 1 at different locations are also different. Therefore, the connecting rod 2 is designed as a structure that can change the distance, as detailed below.

[0053] like Figure 2 The linkage 2 includes a first fixing member 21 and a second fixing member 22.

[0054] like Figure 3 The linkage 2 also includes an abutment member 3.

[0055] like Figure 4 The linkage 2 also includes a ring assembly 4.

[0056] The first fixing member 21 and the second fixing member 22 can be clamps that are perpendicular to each other and can be rotated to be parallel, each of which can clamp a steel pipe to achieve relative fixation of the two steel pipes.

[0057] like Figure 2 and Figure 3 The connection method of the first fixing member 21 and the second fixing member 22 can be that the first fixing member 21 includes a shaft sleeve 211 and the second fixing member 22 includes an inner shaft 221, with the inner shaft 221 inserted into the shaft sleeve 211.

[0058] In one optional embodiment, a cylindrical groove 2111 is formed on the inner wall of the shaft cylinder 211. The inner shaft 221 has an annular flared portion 2211. The flared portion 2211 is inserted into the groove 2111 and can move along the groove 2111. The relative movement distance of the first fixing member 21 and the second fixing member 22 is limited by the length of the groove 2111 to prevent the first fixing member 21 and the second fixing member 22 from disengaging from each other. The inner shaft 221 can rotate relative to the shaft cylinder 211, so that the first fixing member 21 and the second fixing member 22 rotate from being perpendicular to each other to being parallel to each other, so as to fix intersecting or parallel steel pipes. In some embodiments, the groove 2111 may also be strip-shaped, and the flared portion 2211 may be rod-shaped.

[0059] like Figure 5 The side wall of the shaft cylinder 211 has a through hole 2112. The abutment 3 is installed in the through hole 2112 and extends out of the through hole 2112 on both sides.

[0060] like Figure 4 and Figure 6 The ring assembly 4 includes a housing 41, a first elastic element 42, and a pressure application module 43. The first elastic element 42 may be a spring. The housing 41 is ring-fitted outside the shaft cylinder 211.

[0061] like Figure 5 The inner wall of the housing 41 has an inward protrusion 4101 facing the shaft cylinder 211. The shaft cylinder 211 has an outward protrusion 2113 facing the housing 41. The inner wall of the housing 41, the outer wall of the shaft cylinder 211, the inward protrusion 4101, and the outward protrusion 2113 form a cavity. The first elastic member 42 is disposed in the cavity, with its two ends abutting against the inward protrusion 4101 and the outward protrusion 2113, respectively.

[0062] like Figure 5The inner protrusion 4101 of the housing 41 divides the space between the housing 41 and the shaft cylinder 211 into two spaces, upper and lower. The end near the clamping structure of the second fixing member 22 is the aforementioned cavity, and at the other end, the housing 41 and the shaft cylinder 211 enclose and form a connected pressure chamber 44 and relaxation chamber 45.

[0063] like Figure 7 The pressure chamber 44 and relaxation chamber 45 can be formed by the shell 41 having a first annular surface 4102 and a second annular surface 4103 parallel to the inner cylinder, the diameter of the second annular surface 4103 being larger than that of the first annular surface 4102. The first annular surface 4102 and the second annular surface 4103 are connected by an oblique annular surface 4104. The pressure chamber 44 is formed between the first annular surface 4102 and the inner cylinder. The relaxation chamber 45 is formed between the second annular surface 4103 and the inner cylinder.

[0064] Please refer to Figure 5 The pressure module 43 is installed in the housing 41, facing the pressure chamber 44. Moving the housing 41 causes the relaxation chamber 45 to face (directly towards) the abutment 3, compressing the first elastic element 42, which can pull the inner shaft 221 to slide relative to the shaft cylinder 211, thereby adjusting the distance between the first fixing element 21 and the second fixing element 22. After moving the housing 41 and pulling the inner shaft 221, releasing the housing 41 allows the rebound force of the first elastic element 42 to drive the housing 41 to move, causing the pressure chamber 44 to face the abutment 3, and the pressure module 43 to apply pressure to the abutment 3, causing the abutment 3 to press against the inner shaft 221.

[0065] like Figure 7 The two ends of the housing 41 can also be respectively provided with an upper convex ring 4105 convex towards the shaft cylinder 211 and a lower convex ring 4106 convex towards the inner shaft 221. The upper convex ring 4105 closes the relaxation cavity 45. Figure 5 The lower convex ring 4106 is adjacent to the outer convex portion 2113 of the shaft cylinder 211 and is located outside the outer convex portion 2113.

[0066] like Figure 8 Specifically, pulling the housing 41 causes the inner protrusion 4101 of the housing 41 to move towards the outer protrusion 2113 of the shaft cylinder 211. The first elastic member 42 is compressed, causing the relaxation cavity 45 to face the abutment 3. The abutment 3 is not compressed, thus allowing the second fixing member 22 to be pulled, changing the depth of the inner shaft 221 inserted into the shaft cylinder 211, i.e., adjusting the distance between the first fixing member 21 and the second fixing member 22. Figure 3Then, the housing 41 is released, and the first elastic element 42 rebounds, causing the inner protrusion 4101 of the housing 41 to move away from the outer protrusion 2113 of the shaft cylinder 211, so that the pressure chamber 44 faces the abutment 3. At this time, the pressure module 43 applies pressure to the abutment 3, so that the abutment 3 presses against the inner shaft 221, and the first fixing element 21 and the second fixing element 22 are fixed to each other. In this way, the distance between the first fixing element 21 and the second fixing element 22 of the connecting rod 2 can be adjusted, and rods 1 at different distances can be connected without bending the rod 1.

[0067] In an optional embodiment, a plurality of equally spaced through holes 2112, for example, four through holes 2112, are formed on the same circumference of the sidewall of the shaft cylinder 211. Figure 9 The scaffolding includes four abutment members 3, each installed in one of the four through holes 2112. The multiple abutment members 3, spaced equidistantly, strengthen the resistance against the inner shaft 221, improving the stability of the first fixing member 21 and the second fixing member 22. The abutment members 3 can be block-shaped, etc. Four cavities separate the housing 41 and the shaft cylinder 211, each cavity housing a first elastic member 42.

[0068] like Figure 9 In an improved embodiment, each abutment 3 is a fan-shaped ring, and the side of the abutment 3 facing the inner shaft 221 can fit against the outer wall surface of the inner shaft 221. That is, the abutment 3 can fit against the outer wall surface of the inner shaft 221, with a large contact surface. Under the same pressure, the friction is greater, making the first fixing member 21 and the second fixing member 22 more firmly connected.

[0069] like Figure 7 In a preferred embodiment of the pressure application module 43, to facilitate its installation, a sequentially connected ejection cavity 4107, mounting cavity 4108, connecting cavity 4109, and smoothing cavity 4110 are first formed inside the housing 41. The ejection cavity 4107 is formed on the inner protrusion 4101 of the housing 41. The ejection cavity 4107 and the smoothing cavity 4110 are respectively connected to the pressure application cavity 44 vertically and laterally. Figure 6 The pressure application module 43 includes a linkage component 431, a second elastic component 432, a pressure application component 433, and a third elastic component 434. Both the second elastic component 432 and the third elastic component 434 can be springs.

[0070] like Figure 10 The linkage 431 includes a main body 4311, and an ejector portion 4312 and an insertion portion 4313 connected to the main body 4311. The components are generally U-shaped, and preferably the insertion portion 4313 is longer than the ejector portion 4312. A second elastic member 432 is connected to the main body 4311 and is also located within the mounting cavity 4108. The ejector portion 4312 passes through the ejection cavity 4107.

[0071] The pressure-applying element 433 and the third elastic element 434 are connected and both are disposed within the smooth cavity 4110. For example... Figure 11 The pressure-applying member 433 has a slanted groove 4331. The end of the insertion part 4313 has an inclined surface 4314. The insertion part 4313 passes through the communicating cavity 4109 and is inserted into the slanted groove 4331, such that the inclined surface 4314 fits against the slanted groove 4331.

[0072] Please refer to Figure 3 When the pressure chamber 44 faces the abutment 3, the abutment 3 presses the ejector part 4312, the second elastic member 432 is compressed, the insertion part 4313 is inserted into the inclined groove 4331 to a shallower depth, the third elastic member 434 pushes the pressure member 433 out of the smooth cavity 4110 and abuts against the abutment 3, and the abutment 3 abuts against the inner shaft 221.

[0073] Please refer to Figure 8 When the relaxation chamber 45 faces the abutment 3, the second elastic member 432 extends, pushing the ejector part 4312 into the pressure chamber 44, and the insertion part 4313 is inserted into the inclined groove 4331 to a deeper depth, pushing the pressure member 433 back into the smooth chamber 4110.

[0074] In the above embodiments, when the pressure chamber 44 faces the abutment 3, the pressure member 433 extends out of the smooth cavity 4110 and abuts against the abutment 3, which in turn abuts against the inner shaft 221, thus achieving mutual fixation between the first fixing member 21 and the second fixing member 22. When the relaxation chamber 45 faces the abutment 3, due to the squeezing action of the linkage member 431 and the second elastic member 432 on the pressure member 433, and with the inclined surface 4314 conforming to the inclined groove 4331, the pressure member 433 is pushed back into the smooth cavity 4110, so that during the process of repositioning the abutment 3 relative to the pressure chamber 44, the pressure member 433 will not obstruct the abutment 3 from returning to the position facing the pressure chamber 44.

[0075] The elastic coefficient of the first elastic element is preferably greater than that of the second elastic element, which is greater than that of the third elastic element, in order to better match the pushing action of the above components.

[0076] In a preferred embodiment, the connecting cavity 4109 is shaped to the insertion part 4313, and / or the ejection cavity 4107 is shaped to the ejection part 4312, so that the insertion part 4313 only moves in and out relative to the inclined groove 4331, making the pushing of the linkage 431 to the pressure member 433 highly reliable, fast in response, and accurate in pushing distance.

[0077] In a preferred embodiment, the pressure-applying member 433 is adapted to the shape of the smooth cavity 4110, so that the pressure-applying member 433 moves back and forth in a straight line only along the smooth cavity 4110, so that the position of the pressure-applying member 433 contacting the abutment member 3 is uniform each time, and the pressure-applying member 433 can accurately push on the abutment member 3, with large pressure and precise direction, so that the first fixing member 21 and the second fixing member 22 are more firmly combined.

[0078] like Figure 10 In a preferred embodiment, the insertion part 4313 is rod-shaped, with its end formed by an inclined surface 4314, creating a pointed end angle θ of 30~45°. Since the inclined surface 4314 conforms to the inclined groove 4331, the 30~45° angle of the inclined surface 4314 effectively allows the insertion part 4313 to penetrate deeply into the inclined groove 4331, effectively pushing the pressure member 433 along the smooth cavity 4110. If the angle is too large, the horizontal component of the force on the pressure member 433 is small, making it difficult to push the pressure member 433. If the angle is too small, the pushing distance of the pressure member 433 is small, making it difficult to press the pressure member 433 back into the smooth cavity 4110.

[0079] In a preferred embodiment, when the pressure chamber 44 faces the abutment 3, the inclined surface 4314 is completely located in the inclined groove 4331. Then, the linkage 431 will not slide out of the inclined groove 4331 of the pressure member 433 during the movement, and can continuously push the pressure member 433 to retract into the smooth cavity 4110 or reduce the insertion depth of the pressure member 433, so that the pressure member 433 extends out of the smooth cavity 4110 under the push of the third elastic member 434 to apply pressure to the abutment 3.

[0080] In a preferred embodiment, the width of the pressure chamber 44 is less than the width of the relaxation chamber 45, which is less than the width of the abutment 3. When the abutment 3 faces the pressure chamber 44, it is pressed and fixed. When the abutment 3 faces the relaxation chamber 45, it has a larger range of motion and is not pressed, thus eliminating the pressure on the inner shaft 221 and allowing the inner shaft 221 to move relative to the shaft cylinder 211, i.e., adjusting the distance between the first fixing member 21 and the second fixing member 22. The width of the abutment 3 is greater than the width of the relaxation chamber 45, ensuring that the abutment 3 will not slip out of the through hole 2112 on the side wall of the shaft cylinder 211 during movement, allowing the inner shaft 221, the shaft cylinder 211, and the housing 41 to continuously and effectively move back and forth relative to each other.

[0081] The above embodiments all incorporate adjustable-length connecting rods 2. These connecting rods 2 can accommodate two steel pipes with different connection distances and relative angles. They allow for the connection of steel pipes at different distances without bending the pipes to adjust the distance. Scaffolding constructed using these connecting rods exhibits high structural rigidity and a long service life for the steel pipes. The high-support formwork structure constructed using this scaffolding is stable and can meet the needs of buildings with large spans, large cross-sections, and high ceilings.

[0082] The above are merely some embodiments of this application. The scope of protection of this application is not limited to the above embodiments. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the inventive design of this application should also fall within the scope of protection of this application.

Claims

1. A scaffold for formwork support, characterized in that, The scaffolding includes multiple cross-connected rods (1) and multiple linkages (2) for connecting the rods (1). Each of the linkages (2) includes a first fixing member (21), a second fixing member (22), an abutment member (3), and a ring assembly (4); The first fixing member (21) includes a shaft sleeve (211); the second fixing member (22) includes an inner shaft (221); the inner shaft (221) is inserted into the shaft sleeve (211); The side wall of the shaft cylinder (211) is provided with a through hole (2112); the abutment (3) is installed in the through hole (2112) and extends out of the through hole (2112) on both sides. The ring assembly (4) includes a shell (41), a first elastic element (42), and a pressure module (43); the shell (41) is ringed around the shaft cylinder (211); the inner wall of the shell (41) has an inward protrusion (4101) facing the shaft cylinder (211); the shaft cylinder (211) has an outward protrusion (2113) facing the shell (41); the first elastic element (42) abuts between the inward protrusion (4101) and the outward protrusion (2113); The housing (41) and the shaft (211) enclose each other to form a pressure chamber (44) and a relaxation chamber (45); the pressure module (43) is installed in the housing (41) and faces the pressure chamber (44). Moving the housing (41) causes the relaxation chamber (45) to face the abutment (3), allowing the inner shaft (221) to slide relative to the shaft cylinder (211), and compressing the first elastic element (42); the rebound force of the first elastic element (42) can drive the housing (41) to move, causing the pressure chamber (44) to face the abutment (3), and the pressure module (43) can apply pressure to the abutment (3), causing the abutment (3) to press against the inner shaft (221); The housing (41) has an ejection cavity (4107), an installation cavity (4108), a connecting cavity (4109), and a smooth cavity (4110) connected in sequence inside; the inner protrusion (4101) opens the ejection cavity (4107); the ejection cavity (4107) and the smooth cavity (4110) are connected to the pressure chamber (44) from two directions respectively. The pressure module (43) includes a linkage (431), a second elastic element (432), a pressure element (433), and a third elastic element (434). The linkage (431) includes a main body (4311), and an ejector (4312) and an insertion (4313) connected to the main body (4311); the second elastic member (432) is connected to the main body (4311) and is disposed in the mounting cavity (4108); the ejector (4312) passes through the ejector cavity (4107). The pressure-applying member (433) and the third elastic member (434) are connected and both are disposed in the smooth cavity (4110); the pressure-applying member (433) has an inclined groove (4331); the insertion part (4313) has an inclined surface (4314); the insertion part (4313) passes through the communicating cavity (4109) and is inserted into the inclined groove (4331), such that the inclined surface (4314) fits against the inclined groove (4331); When the pressure chamber (44) faces the abutment (3), the abutment (3) presses the ejector (4312), the second elastic member (432) is compressed, the insertion part (4313) is inserted into the inclined groove (4331) to a shallower depth, the third elastic member (434) pushes the pressure member (433) out of the smooth cavity (4110) and abuts against the abutment (3), and the abutment (3) abuts against the inner shaft (221); When the relaxation chamber (45) faces the abutment (3), the second elastic member (432) extends, pushing the ejector (4312) into the pressure chamber (44), and the insertion part (4313) is inserted into the inclined groove (4331) to a deeper depth, pushing the pressure member (433) back into the smooth chamber (4110).

2. The scaffolding for formwork support according to claim 1, characterized in that, The inner wall of the shaft cylinder (211) is provided with a sliding groove (2111); the inner shaft (221) has an outward expansion portion (2211); the outward expansion portion (2211) is inserted into the sliding groove (2111) and can move along the sliding groove (2111).

3. The scaffolding for formwork support according to claim 1, characterized in that, The sidewall of the shaft cylinder (211) has a plurality of equally spaced through holes (2112); the scaffold includes a plurality of abutment members (3); the plurality of abutment members (3) are installed one by one in the plurality of through holes (2112).

4. The scaffolding for formwork support according to claim 1, characterized in that, Each of the abutments (3) is a fan-shaped ring, and the side of the abutment (3) facing the inner shaft (221) can fit against the outer wall surface of the inner shaft (221).

5. The scaffolding for formwork support according to claim 1, characterized in that, The connecting cavity (4109) is adapted to the shape of the insertion part (4313), and / or the ejection cavity (4107) is adapted to the shape of the ejection part (4312), so that the insertion part (4313) moves in and out only relative to the inclined groove (4331).

6. The scaffolding for formwork support according to claim 1, characterized in that, The pressure-applying member (433) is adapted to the shape of the smooth cavity (4110) so that the pressure-applying member (433) moves back and forth in a straight line only along the smooth cavity (4110).

7. The scaffolding for formwork support according to claim 1, characterized in that, The end of the insertion part (4313) is provided with the inclined surface (4314) to form a tip with an inner angle of 30~45°.

8. The scaffolding for formwork support according to claim 7, characterized in that, When the pressure chamber (44) is facing the abutment (3), the inclined surface (4314) is completely located in the inclined groove (4331).

9. The scaffolding for formwork support according to claim 1, characterized in that, The width of the pressure chamber (44) is less than the width of the relaxation chamber (45) and less than the width of the abutment (3).

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