Beam bottom formwork support frame steel pipe square fastener device

Abstract

This invention discloses a square fastener device for steel pipes in a beam bottom formwork support frame, relating to the field of workpiece assembly technology. It includes a square tube fixing mechanism, a round tube fixing mechanism, a sliding telescopic mechanism, and a tightening mechanism. The bottom component of the round tube fixing mechanism has an arc-shaped inner cavity, and a clamping assembly is rotatably connected to the side wall of the bottom component. The clamping assembly and the arc-shaped inner cavity form a circular receiving cavity to accommodate the round steel pipe. The rear side of the bottom component is connected to the sliding telescopic mechanism. When oil from the oil cavity inside the bottom component flows into the telescopic oil pipe, it pushes the piston inside the telescopic oil pipe towards the square tube, simultaneously causing the top plate of the tightening mechanism to move in the same direction, thus achieving tightening and pressing of the square steel pipe inside the square tube. This invention improves the stability and reliability of steel pipe connections, enabling better clamping and fixing of round and square steel pipes, and has wide applicability and versatility.

Description

Technical Field

[0001] This invention belongs to the field of assembly workpiece technology, specifically relating to a square fastener device for a steel pipe of a beam bottom formwork support frame. Background Technology

[0002] Couplers generally refer to intermediate connecting parts that connect two components. In construction engineering, they are mostly used to fix steel pipe scaffolding with an outer diameter of Φ48mm. Couplers are divided into right-angle couplers (cross couplers and directional couplers), swivel couplers (movable couplers and universal couplers), and butt couplers (straight couplers and direct couplers). Most couplers can only connect two cylindrical components that are joined together, such as two round steel pipes joined together in scaffolding. However, they cannot connect two steel pipes of different shapes, such as square steel pipes and round steel pipes.

[0003] Furthermore, when assembling two different types of steel pipes, the existing component structures may only be applicable to the connection of steel pipes of specific types or sizes, lacking versatility and flexibility. When connecting steel pipes with different structures, it is usually impossible to change the position and direction of the steel pipe connection; they can only be assembled along a fixed direction, and the required connection structure is relatively complex, which increases the complexity of installation. In addition, there is the problem that the connection is not firm after installation, and it is easy to loosen or fall off, thus affecting the safety of the construction site.

[0004] Based on this, the present invention proposes a method that can connect and assemble components of different structures together, in order to further reduce the workload of operators and improve assembly stability and safety. Summary of the Invention

[0005] In view of the defects and problems of traditional connecting components, such as poor versatility and flexibility, complex connection structure, unreliable fixing and complicated installation, the present invention provides a steel pipe square fastener device for beam bottom formwork support frame.

[0006] The solution adopted by this invention to solve its technical problem is: a square fastener device for steel pipes of a beam bottom formwork support frame, including a square tube fixing mechanism, a round tube fixing mechanism, a sliding telescopic mechanism, and a tightening mechanism. The round tube fixing mechanism includes a bottom member with an arc-shaped inner cavity, and a clamping component is rotatably connected to the side wall of the bottom member. The clamping component can form a circular receiving cavity with the arc-shaped inner cavity to accommodate the round steel pipe. The rear side of the bottom member is connected to the sliding telescopic mechanism, which includes a connecting member with an extension mechanism inside. The telescopic oil pipe is fitted inside the connector. One end of the oil pipe is connected to the oil cavity inside the bottom component, and the other end is connected to a tightening mechanism. The tightening mechanism is connected to the square tube fixing mechanism. The tightening mechanism includes a top plate, and the square tube fixing mechanism includes a square tube. The top plate extends into the inner cavity of the square tube. In its natural state, when the oil in the oil cavity inside the bottom component flows into the telescopic oil pipe, it can push the piston inside the telescopic oil pipe to move towards the square tube, and at the same time drive the top plate of the tightening mechanism to move in the same direction, thereby achieving the tightening and pressing of the square steel tube inside the square tube.

[0007] Furthermore, the clamping assembly includes an arc-shaped clamp and a connecting post. The clamp has an upper groove, and a top piece extends from the end of the clamp. A guide groove is opened in the top piece, and the internal size of the guide groove matches that of the connecting post.

[0008] Furthermore, one end of the arc-shaped clamp that is rotatably connected to the movable seat on the bottom part is a screw seat with an irregular elliptical structure, and the bottom of the movable seat connected to the screw seat extends inward into the oil cavity inside the bottom part and is connected to a slider. The slider end is provided with a slider piston, and a slider spring is fixedly connected to the left side of the slider piston. The end of the slider spring is fixedly installed at the bottom of the oil cavity.

[0009] Furthermore, the connector includes a locking head and a locking seat fixed on the left side wall of the base piece. The locking seat and the locking head are connected by threads, and both have a hollow internal structure to match the telescopic oil pipe.

[0010] Furthermore, the tightening mechanism also includes a stud with external threads on its outer surface. The right end of the stud is connected to the internal thread hole on the telescopic oil pipe, and a top plate is fixedly installed on the left side.

[0011] Furthermore, a connecting block is fixedly installed on the outer wall of the square tube near the bottom component, the connecting block is provided with a connecting hole, and the side wall of the square tube is provided with a through hole corresponding to the connecting hole.

[0012] Furthermore, an inner top block channel is provided in the bottom part near the arc-shaped inner cavity. An inner top block piston is fitted in the inner top block channel. An inner top block is fixedly connected to the right side of the inner top block piston. The inner top block extends outward to the outside of the lower groove of the bottom part, and an arc-shaped surface is provided on the side of the inner top block that extends outward from the bottom part.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention provides a square fastener device for steel pipes of beam bottom formwork support frame. This product can fix square steel pipes and round steel pipes through the cooperation between square pipes, bottom parts and top parts. Compared with the prior art, which can only fix two adjacent round steel pipes, this invention can quickly fix two different shapes of square steel pipes and round steel pipes, solving the single fixation defect of the prior art.

[0015] This invention improves the stability and reliability of steel pipe connections. Through the design of round and square pipe fixing mechanisms, it ensures that the round and square steel pipes are firmly fixed to the support frame during the connection process, preventing loosening or detachment and ensuring the safety of the beam bottom formwork support frame. The connection process is also simpler and faster, reducing the workload of operators. The compression of the hydraulic fluid and the action of the top-pressing mechanism allow for better clamping and fixing of the round and square steel pipes, thereby enhancing the load-bearing capacity of the entire support frame. This invention has wide applicability and versatility. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a front view structural diagram of the present invention.

[0018] Figure 3 This is a top view of the structure of the present invention.

[0019] Figure 4 This is a front view structural diagram of the connector of the present invention.

[0020] Figure 5 This is a cross-sectional structural diagram of the base component of the present invention.

[0021] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle.

[0022] Figure 7 This is a cross-sectional structural diagram of Embodiment 2 of the present invention.

[0023] Figure 8 for Figure 7 A magnified structural diagram at point B in the middle.

[0024] Figure 9 This is a front view structural diagram of Embodiment 3 of the present invention.

[0025] In the diagram: 1-Square tube, 2-Connecting block, 3-Bottom piece, 4-Upper groove, 5-Connecting column, 6-Connecting piece, 7-Top plate, 8-Staple, 9-Telescopic oil pipe, 10-Lower groove, 11-Top piece, 12-Guide groove, 13-Washer, 14-Nut, 15-Modible seat, 16-Screw seat, 17-Inner top block, 18-Locking head, 19-Locking seat, 20-Locking inner cavity, 21-Oil cavity channel, 22-Oil pipe piston, 23-Oil inlet, 24-Outer sleeve 25-Main oil chamber, 26-Slider spring, 27-Slider piston, 28-Slider, 29-Inner top block channel, 30-Inner top block piston, 31-Insertion block, 32-Insertion block spring, 33-Insertion block oil passage, 34-Oil port a, 35-Oil port b, 36-Slot oil chamber, 37-Oil port c, 38-Oil port d, 39-Top spring, 40-Slot, 41-Locking inner cavity, 42-Inner threaded hole, 43-Stop, 44-Connecting shaft, 45-Baffle, 46-Connecting rod. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Please see Figure 1-9 This invention provides a technical solution for a square fastener device for a steel pipe of a beam bottom formwork support frame:

[0028] Example 1:

[0029] This embodiment provides a square fastener device for a beam bottom formwork support frame steel pipe, including a square tube fixing mechanism, a round tube fixing mechanism, a sliding telescopic mechanism, and a tightening mechanism. The square tube fixing mechanism includes a base component 3, which has an arc-shaped inner cavity, i.e., a lower groove 10. Figure 1-3 As shown, movable seats 15 are provided on the front and rear side walls of the base, and a connecting column 5 is rotatably connected to the front movable seat. The connecting column has a threaded section, a washer 13 is fitted on the threaded section, and a nut 14 is installed at the end of the connecting column.

[0030] An arc-shaped clamp is rotatably mounted on the movable seat at the rear of the bottom component. It is a detachable connection. The clamp has an upper groove 4. The end of the clamp extends into a top component 11. A guide groove 12 is opened in the top component 11. The internal dimensions of the guide groove match the connecting column 5, that is, the diameter of the connecting column is the same as the width of the guide groove 12.

[0031] By rotating the top piece 11, the connecting column can be slid into the guide groove 12. When the connecting column is slid into the guide groove, the top piece 11 and the connecting column are matched and connected. Tighten the nut 14 to fix the top piece and the connecting column. This makes the lower groove on the bottom piece and the upper groove of the clamp form a circular channel. The circular channel is used for matching and fitting the circular steel pipe, and the circular steel pipe is fixedly clamped inside the circular channel.

[0032] It should be noted that when the top piece is rotated, the upper and lower grooves will only form a circular channel that matches the round steel pipe under ideal conditions; in actual applications, an opening will be left between them, and the clamping position of the nut on the top piece can be adjusted to fix and clamp round steel pipes of different sizes.

[0033] Furthermore, such as Figure 3 As shown, one end of the arc-shaped clamp that is rotatably connected to the movable seat 15 on the base 3 is a screw seat 16 with an irregular elliptical structure. The bottom of the movable seat connected to the screw seat extends inward into the main oil cavity 25 inside the base and is connected to a slider 28. A slider piston 27 is provided at the end of the slider. A slider spring 26 is fixedly connected to the left side of the slider piston. The end of the slider spring is fixedly installed at the bottom of the oil cavity. The main oil cavity 25 is filled with oil.

[0034] With this setting, see Figure 3 When the arc-shaped clamp is rotated, the elliptical screw seat on the clamp will press down on the movable seat 15, pushing the movable seat 15 into the inner cavity of the bottom part. At the same time, it will drive the slider 28 and the slider piston to move to the left, compressing the slider spring 26. During the movement of the slider piston, the oil in the compressed oil chamber will be connected to the telescopic oil pipe of the sliding telescopic mechanism through the oil chamber channel, thereby driving the telescopic oil pipe to move horizontally. When the clamp is rotated again to return to its initial state, the slider 28 will also be reset under the action of the slider spring 26.

[0035] In addition, an inner top block channel 29 is provided in the bottom part near the lower groove. An inner top block piston 30 is fitted in the inner top block channel. An inner top block 17 is fixedly connected to the right side of the inner top block piston. The inner top block extends outward to the outside of the lower groove of the bottom part, and an arc-shaped surface is provided on the side of the inner top block that extends outward from the bottom part. This arc-shaped surface is used to match the circular steel pipe.

[0036] With this inner top block design, when the oil pressure in the oil chamber increases, the internal oil can push the inner top block piston 30 to the right through the inner top block channel 29, thereby driving the inner top block to move towards the lower groove, thus further pressing and clamping the circular steel pipe in the circular channel.

[0037] like Figure 4-6 As shown, the sliding telescopic mechanism includes a connector 6, which includes a locking head 18 and a locking seat 19 fixed on the left side wall of the bottom part. The locking seat and the locking head are connected by threads, and both have a hollow structure inside, which is used to match the telescopic oil pipe 9.

[0038] like Figure 6As shown, the telescopic oil pipe 9 includes an outer sleeve 24, inside which is an oil pipe piston 22. A locking head 18 extends outward from the left side of the oil pipe piston, and an internal threaded hole 42 is provided at the end for threaded connection with the stud 8. The oil in the oil chamber enters the inner sleeve through the oil inlet 23 through the oil chamber channel to exert pressure on the oil pipe piston.

[0039] Furthermore, the locking head 18 is also provided with a baffle 43. The telescopic oil pipe is fitted inside the locking head. When the locking head 18 is threadedly connected and fixed to the locking seat 19, the telescopic oil pipe inside the locking head is also fitted inside the locking seat. The oil inlet on the outer tube of the telescopic oil pipe is connected to the Y-oil cavity channel. The left side of the outer tube is secured by the baffle 43, thereby fixing the outer tube in the inner cavity of the locking head and the locking seat.

[0040] When the oil pressure in the oil chamber increases, the oil enters the telescopic oil pipe through the oil inlet. As the amount of oil entering increases, the pressure inside the telescopic oil pipe increases, thus starting to push the oil pipe piston to the left, causing the oil pipe piston to extend to the left. At the same time, it drives the stud on the left side of the oil pipe piston and the top plate fixed on the stud to move to the left, thereby realizing the pressing and fixing of the square steel pipe inside the square pipe fixing mechanism by the top plate.

[0041] like Figure 1-3 As shown, the square tube fixing mechanism includes a square tube 1, which has a hollow internal structure for fixing the square steel tube. A connecting block 2 is fixedly installed on the outer wall of the square tube near the bottom component. The connecting block 2 has a connecting hole for the telescopic oil pipe on the telescopic sleeve to pass through. The side wall of the square tube has a through hole corresponding to the connecting hole for the stud to pass through.

[0042] The tightening mechanism includes a stud 8 and a top plate 7. The stud 8 has external threads on its outer surface. The right end of the stud connects to the internal threaded hole on the telescopic oil pipe, and the top plate 7 is fixedly installed on the left side. Furthermore, the right end of the stud is detachably threaded to the telescopic oil pipe, and the left end extends through the side wall of the square pipe into the inner cavity of the square pipe 1, where it is connected to the top plate 7. By controlling the left and right movement of the telescopic oil pipe, the top plate on the stud moves left and right within the square pipe, thereby achieving the pressing and loosening of square steel pipes of different sizes inside the square pipe.

[0043] It should be noted that, depending on the actual application, the actual feed amount that the piston in the oil pipe causes the top plate 7 to move is only 1-2mm. With this setting, on the one hand, the detachable structure of the stud and the telescopic oil pipe can be used to fix and clamp square tubes of different sizes. On the other hand, the feed amount of the top plate can be controlled to further lock and fix the square steel tube. Furthermore, the stud structure of different lengths can be replaced at any time to further expand the scope of application.

[0044] The present invention provides a square fastener device for steel pipes of beam bottom formwork support frame. In specific use, when it is necessary to connect the square steel pipe on the beam bottom formwork support frame with the circular steel pipe underground, the operator needs to first insert the square steel pipe into the square pipe 1, and then fit the circular steel pipe into the lower groove 10 of the bottom part 3. Then, rotate the top part 11 so that the lower groove abuts against the outer circumference of the circular steel pipe, and match the guide groove with the connecting column 5 so that the circular channel formed by the upper groove and the lower groove clamps the circular steel pipe. Tighten the nut so that the washer clamps and fixes the top part to the bottom part, thus completing the fixing and clamping of the circular steel pipe.

[0045] Simultaneously, as the top piece 11 rotates, the stud on the left side of the upper groove presses against the movable seat 15, causing the slider and slider piston inside the bottom piece to extend into the oil chamber, compressing the slider spring 26 and the oil in the oil chamber. On one hand, the oil presses outward against the inner top block piston 30 inside the bottom piece, and drives the inner top block 17 on the lower groove to extend outward, enhancing the clamping effect on the circular steel pipe in the circular channel. On the other hand, the oil flows into the telescopic oil pipe from the oil inlet 23 through the oil chamber channel, and as the pressure inside the telescopic oil pipe increases, it presses against the oil pipe piston to the left, causing the piston oil pipe to move to the left, and simultaneously driving the stud, i.e., the top plate, which is threaded to it, to move to the left, thereby achieving pressure on the square steel pipe inside the square tube, further enhancing the clamping force on the square tube. Thus, the circular steel pipe and the square steel pipe are tightly and securely assembled together.

[0046] The square fastener device for steel pipes of the beam bottom formwork support frame provided by this invention improves the stability and reliability of steel pipe connections, ensures the safety of the beam bottom formwork support frame, and enables round and square steel pipes to be better clamped and fixed, thereby enhancing the load-bearing capacity of the entire support frame.

[0047] Example 2:

[0048] Based on Embodiment 1, the similarities between this embodiment and Embodiment 1 will not be repeated here. The differences are as follows: Figure 7 and Figure 8 As shown, the connector 6 has a self-sealing structure to prevent oil leakage from the oil cavity inside the bottom part 3 when changing locking heads of different lengths. Specifically, it includes a locking base with external threads on the outer surface and symmetrically arranged insert oil channels 33 inside. The right side of the insert oil channel is connected to the oil cavity inside the bottom part. Insert blocks 31 are telescopically fitted between the insert oil channels through insert springs. Oil ports b35 are symmetrically arranged on the side wall of the insert block 31. Similarly, oil ports a34 are symmetrically arranged in the insert oil channel near the insert block.

[0049] With this design, under normal conditions, the insert block protrudes outward under the action of the insert block spring, and oil port a and oil port b are not connected, remaining in a naturally closed state. When the protrusion is subjected to pressure and moves to the right, pressing against the insert block spring 32, oil port b moves to the right to connect with oil port a, thereby allowing the oil in the oil passage of the insert block to enter the inner cavity of the insert block through the connected oil port.

[0050] like Figure 7 As shown, the locking head 18 has an internal thread in its locking cavity 41, and symmetrical slot oil cavities 36 are also provided inside. Slots 40 are slidably connected between the slot oil cavities via top springs 39. An oil port d38 is provided on the side wall of the slot, and an oil port c is provided on the side wall of the adjacent slot oil passage. In its natural state, under the action of the top spring, the slot naturally pushes outwards, and oil ports c and d do not align, keeping the slot oil cavities in a self-sealing state. Furthermore, the ports of the insert and the slot have matching beveled structures, facilitating their docking and fixing.

[0051] This design not only allows for the replacement of locking heads of different lengths to achieve docking with the locking base, but also effectively reduces oil leakage in the oil cavity of the bottom component 3 when changing locking heads of different lengths. It also allows for the fixed assembly of round and square steel pipes with different inclination states.

[0052] In practical use, the locking head and locking base are connected by threads. During the tightening process, the insert on the locking base fits into the inner cavity of the slot 40. The slot pushes the groove to the left, compressing the top spring. Simultaneously, the spring on the insert is compressed in the opposite direction. At the same time, the oil port c on the slot's oil cavity connects with the oil port d on the slot, and the oil port a on the insert's oil passage connects with the oil port b on the insert. Once the slot's oil cavity on the locking head and the end face of the insert's oil passage are in tight contact, the locking head and locking base are connected, and the oil port b on the insert is connected with the oil port d on the slot. During this process, oil enters the inner cavity of the insert from the oil passage on the insert, and then enters the inner cavity of the slot along the oil passage on the slot. It then flows to the slot's oil cavity 36 through the connecting oil port. The left side of the slot's oil cavity connects to the telescopic oil pipe, thereby extending the telescopic oil pipe.

[0053] Example 3:

[0054] Based on Embodiment 1, the similarities between this embodiment and Embodiment 1 will not be repeated. The difference lies in that, in order to reduce manufacturing costs and expand the scope of application, the base component and the square tube are rotatably connected. Specifically, as shown... Figure 9As shown, a connecting shaft 44 is fixedly installed on the left side wall of the base 3. The left end of the connecting shaft passes through the connecting hole on the connecting block and extends into the interior of the connecting block. A baffle 45 is connected to the end of the shaft, and the baffle 45 is located in the inner cavity of the connecting block. A connecting rod 46 is also fixedly connected to the left side of the baffle along the transverse direction. The connecting rod 46 passes through the side wall of the square tube to the left into its inner cavity and is fixedly connected to the top plate 7.

[0055] This configuration allows the bottom component 3 to be rotatably connected to the connecting block via the connecting shaft 44 and the baffle 45. In other words, the bottom component 3 can rotate axially on the connecting block, so that the circular channel formed by the top component and the bottom component can be perpendicular to the channel inside the square tube 1 or parallel to the channel inside the square tube 1. The included angle between the two channels can be varied as needed, thereby increasing the angle of the steel pipe that this product can connect to.

[0056] It should be noted that when a round steel pipe needs to be fixedly assembled with multiple square steel pipes on the construction site, the use of the structure in this embodiment can be selectively increased, while the structures described in Embodiment 1 and Embodiment 2 can be reduced accordingly, which can further reduce costs.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A square fastener device for a beam bottom formwork support frame, comprising a square tube fixing mechanism, a round tube fixing mechanism, and a sliding telescopic mechanism, characterized in that: It also includes a clamping mechanism. The circular tube fixing mechanism includes a base piece with an arc-shaped inner cavity. A clamping assembly is rotatably connected to the side wall of the base piece. The clamping assembly and the arc-shaped inner cavity can form a circular receiving cavity to accommodate the circular steel tube. Movable seats are respectively provided on the front and rear side walls of the base piece. A connecting column is rotatably connected to the front movable seat, and an arc-shaped clamp is rotatably installed on the rear movable seat. The rear side of the base piece is connected to a sliding telescopic mechanism. The sliding telescopic mechanism includes a connecting member, and the connecting member contains telescopic oil. The telescopic oil pipe is fitted inside the connector. One end of the oil pipe is connected to the oil cavity inside the bottom component, and the other end is connected to a clamping mechanism. The clamping mechanism is connected to the square tube fixing mechanism. The clamping mechanism includes a top plate, and the square tube fixing mechanism includes a square tube. The top plate extends into the inner cavity of the square tube. In its natural state, when the oil in the oil cavity inside the bottom component flows into the telescopic oil pipe, it can push the piston inside the telescopic oil pipe to move towards the square tube, and at the same time drive the top plate of the clamping mechanism to move in the same direction, thereby achieving clamping and pressing of the square steel tube inside the square tube. The clamping assembly includes an arc-shaped clamp and a connecting post. The clamp has an upper groove, and a top piece extends from the end of the clamp. A guide groove is opened in the top piece, and the internal size of the guide groove matches the connecting post. One end of the arc-shaped clamp is rotatably connected to the movable seat on the bottom part. It is a screw seat with an irregular elliptical structure. The bottom of the movable seat connected to the screw seat extends inward into the oil cavity inside the bottom part and is connected to a slider. The slider end is provided with a slider piston. A slider spring is fixedly connected to the left side of the slider piston. The end of the slider spring is fixedly installed at the bottom of the oil cavity.

2. The square fastener device for the steel pipe of the beam bottom formwork support frame according to claim 1, characterized in that: The connector includes a locking head and a locking seat fixed on the left side wall of the base. The locking seat and the locking head are connected by threads, and both have a hollow internal structure to match the telescopic oil pipe.

3. The square fastener device for the steel pipe of the beam bottom formwork support frame according to claim 1, characterized in that: The tightening mechanism also includes a stud with external threads on its outer surface. The right end of the stud is connected to the internal thread hole on the telescopic oil pipe, and a top plate is fixedly installed on the left side.

4. The square fastener device for the steel pipe of the beam bottom formwork support frame according to claim 1, characterized in that: A connecting block is fixedly installed on the outer wall of the square tube near the bottom component. The connecting block has a connecting hole, and the side wall of the square tube has a through hole corresponding to the connecting hole.

5. The square fastener device for the steel pipe of the beam bottom formwork support frame according to claim 1, characterized in that: An inner top block channel is provided in the bottom part near the arc-shaped inner cavity. An inner top block piston is fitted in the inner top block channel. An inner top block is fixedly connected to the right side of the inner top block piston. The inner top block extends outward to the outside of the lower groove of the bottom part, and the side of the inner top block extending outward from the bottom part has an arc-shaped surface.

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