Adjustable connecting piece for assembly type turnover operation platform

Abstract

The utility model relates to the technical field of accessories for aerial work platforms, in particular to an adjustable connecting piece for an assembly type turnover work platform, which is characterized in that the top end of a fourth steel pipe is inserted into a third steel pipe, and the bottom end of the fourth steel pipe is inserted into a sixth steel pipe; the third steel pipe, the fourth steel pipe and the sixth steel pipe can move relative to each other, so that the height adjustability of the supporting frame is achieved, the flexibility of the supporting frame in the using process is improved, the sixth steel pipe and the fourth steel pipe are connected through third bolts, and the convenience of the mounting process is improved; and meanwhile, the fourth steel pipe and the third steel pipe are connected through the inner fastener, so that the flexibility and stability of connection are improved.

Description

[0001] This application is a divisional application. The application date of the original application is March 13, 2023. The patent application number of the original application is 202320466327.2. The application name of the original application is an assembled turnable working platform and adjustable connecting parts. Technical Field

[0002] The utility model relates to the technical field of accessories for aerial work platforms, in particular to an adjustable connecting piece for an assembled and rotatable work platform. Background Art

[0003] In the construction field, working at height is a common working method. For example, it is difficult to avoid high-altitude construction operations for outdoor decoration, indoor ceilings, or other decorative and renovation work on buildings. The high-altitude construction operation is carried out by building an operating platform for construction workers to carry out their work.

[0004] At present, the construction of high-altitude construction operation platforms is generally divided into two construction methods according to different indoor and outdoor applications: one is to use materials such as steel bars, steel pipes, wire mesh or steel plates, and form them through welding or bolting, which leads to poor flexibility in height adjustment of the construction operation platform and often poor stability, which increases the construction risk factor for construction operators. At the same time, the fixation between steel pipes or steel bars is poor, resulting in a loud friction sound caused by the shaking of the operation platform during the construction process, and the service life of the operation platform is short. The second is to build a scaffolding fixed on the outer wall, which requires drilling holes in the outer wall, and it is difficult to apply to the rapidly developing prefabricated buildings, such as: the technical problems faced by prefabricated buildings disclosed in the background technology section of patent No. 201922234410.3.

[0005] In view of this, construction workers carried out design and application research on the structure of aerial construction operation platforms based on the practical difficulties faced in the daily use of aerial operation platforms, and aimed at the construction method and height adjustment method of the construction operation platforms, combined with the stability, flexibility and ease of application of the construction operation platforms. While providing improvement solutions for aerial construction work platforms, it also provided new ideas for the construction of adjustable connector structures for aerial construction work platforms. Utility Model Content

[0006] In order to solve the above technical problems existing in the prior art, the utility model provides an adjustable connecting piece for an assembled turnable working platform.

[0007] This is achieved specifically through the following technical solutions:

[0008] An adjustable connecting piece for an assembled, revolving work platform comprises a third steel pipe and a fourth steel pipe, wherein the third steel pipe is welded to the lower surface of the second steel pipe; the top end of the fourth steel pipe is inserted into the third steel pipe, and the bottom end of the fourth steel pipe is inserted into the sixth steel pipe; a plurality of limiting holes are provided on the fourth steel pipe, and a fixing hole is provided near the top end of the sixth steel pipe; a third bolt is provided in the fixing hole, and the third bolt can pass through the limiting hole; the fourth steel pipe and the third steel pipe are connected by an internal fastener.

[0009] The top end of the fourth steel pipe is inserted into the third steel pipe, and the bottom end of the fourth steel pipe is inserted into the sixth steel pipe. The third steel pipe, the fourth steel pipe, and the sixth steel pipe can move relative to each other to achieve the adjustability of the support frame height, thereby improving the flexibility of the support frame during use. The sixth steel pipe and the fourth steel pipe are connected by a third bolt, thereby improving the convenience of the installation process. At the same time, the fourth steel pipe and the third steel pipe are connected by an internal fastener, thereby improving the flexibility and stability of the connection.

[0010] In order to simplify the connection construction and operation flexibility of the adjustable connecting piece, preferably, the fourth steel pipe is connected to the third steel pipe via a second bolt.

[0011] In order to enhance the stability and integrity after connection, preferably, a sealing end plate is welded to the top end of the third steel pipe, and a threaded hole is provided at the center of the sealing end plate, and the threaded hole can be threaded into the bottom end of the first bolt.

[0012] In order to facilitate installation and erection, preferably, the second steel pipe is a square steel pipe with a side length of 60 mm and a wall thickness of 5 mm.

[0013] In order to simplify the convenience of the installation and connection of the inner fastener, and to improve the stability of the connection between the third steel pipe and the fourth steel pipe, and to improve the overall stability of the support frame, preferably, the inner fastener includes a through hole provided on the fourth steel pipe and an arc-shaped groove provided on the inner wall of the third steel pipe; a fixed ball is provided in the through hole, and a plurality of springs are provided between the outer wall of the fixed ball and the inner wall of the through hole, and the springs can balance and fix the fixed ball in the through hole; the fixed ball can be engaged in the arc-shaped groove. The fixing ball created by the present invention is selected from but not limited to iron balls, steel balls, etc.

[0014] In order to enable the first bolt to be twisted downward to press against the fixed ball, to increase the pressure on the fixed ball and to improve the stability of the connection between the third steel pipe and the fourth steel pipe, preferably, a sliding block is provided near the top of the fourth steel pipe, and the sliding block can be pushed by the first bolt and slide down to the position of the fixed ball. The sliding block created by the present invention is selected from but not limited to a structure made of wood material that fits the inner wall of the third steel pipe. In order to enhance the squeezing of the fixed ball more tightly, it is more preferred that a cone or a tetrahedron is provided at the bottom of the sliding block.

[0015] The present invention applies the above-mentioned assembled and rotatable working platform with adjustable connecting parts to the assembly of the rotatable working platform, forming an assembled and rotatable working platform, including a support frame and a steel plate installed on the top of the support frame; the support frame includes a plurality of sixth steel pipes, a plurality of first steel pipes, a plurality of second steel pipes and an adjustable connecting part connected between the lower surface of the second steel pipe and the top of the sixth steel pipe; a fifth steel pipe is provided near the bottom end of the sixth steel pipe and between two adjacent sixth steel pipes, and the fifth steel pipe and the sixth steel pipe are connected by a fourth bolt; the adjustable connecting part is fixedly connected to the lower surface of the second steel pipe, and the second steel pipe and the first steel pipe are perpendicular to each other; the first steel pipe and the second steel pipe are connected by a first bolt; a ladder is provided between the second steel pipe and the fifth steel pipe.

[0016] The working platform forms a support frame by interconnecting a plurality of fifth steel pipes, a plurality of first steel pipes, a plurality of second steel pipes, a sixth steel pipe, a fourth bolt, and a first bolt, thereby avoiding welding connection and realizing an assembled connection of the support frame, and an adjustable connecting piece is provided between the second steel pipe and the sixth steel pipe to adjust the distance between the second steel pipe and the sixth steel pipe to adjust the overall height of the support frame, and a steel plate is provided on the top of the support frame to realize the flexibility of the overall use of the support frame and improve the stability of the connection of the support frame; a ladder is provided to greatly facilitate construction workers to climb to the top of the working platform.

[0017] Compared with the prior art, the technical effects created by the present invention are embodied in:

[0018] The invention adopts a plurality of steel pipes connected by bolts or internal fasteners to form a support frame, and a steel plate is laid on the top of the support frame, so as to realize the assembled connection of the working platform, which is convenient for the dismantling and installation of the next turnover application. At the same time, the connection is tightened by bolts passing through the steel pipes, which improves the stability of the connection between the steel pipes, greatly reduces the mutual friction between the steel pipes and causes the service life of the steel pipe material used for the support frame to be reduced, and reduces the noise generated by friction during the use of the support frame, thereby enhancing the overall stability of the working platform.

[0019] The invention provides an adjustable connecting piece on the support frame, so that the support frame can be adjusted in the height direction. The adjustable connecting piece adopts the method of inserting the top end of the fourth steel pipe into the third steel pipe, and the bottom end of the fourth steel pipe into the sixth steel pipe, and bolts are used to fasten the fourth steel pipe and the third steel pipe, and the fourth steel pipe and the sixth steel pipe to each other, thereby enhancing the stability of the connection, and being able to be adjusted by twisting the bolts, thereby ensuring the flexibility of the support frame.

[0020] The present invention is more excellent in that the top end of the fourth steel pipe is inserted into the third steel pipe, and the fourth steel pipe and the third steel pipe are connected by internal fasteners, thereby improving the stability and convenience of the connection between the fourth steel pipe and the third steel pipe.

[0021] The invention is particularly useful for internal fasteners. The fourth steel tube is provided with a through hole, the inner wall of the third steel tube is provided with an arc-shaped groove, a fixed ball is provided in the through hole, and a plurality of springs are provided between the outer wall and the inner part of the fixed ball. The springs balance and fix the fixed ball in the through hole, so that when the outer wall of one side of the fixed ball is squeezed by pressure, the fixed ball protrudes to the other side until it slides into the arc-shaped groove, so that the outer wall of the fourth steel tube and the inner wall of the third steel tube are clamped and fixed by the fixed ball, thereby improving the overall stability of the connection and making the installation between the fourth steel tube and the third steel tube more convenient. Even better is that a sliding block is provided near the top of the fourth steel tube, and the sliding block can be pushed by the first bolt and slide down to the position of the fixed ball, so that when the first bolt is tightened to fix the first steel tube, the second steel tube and the third steel tube, the fixed ball is tightly fixed, thereby enhancing the overall stability of the connection and preventing the fixed ball from deviating inward due to the pressure increase at the top, thereby causing the adjustable connector to slide down and affecting the application safety.

[0022] The invention has a simple structure, is easy to disassemble and install, and improves the flexibility of turnover application. In particular, a movable part that can be locked and fixed is arranged at the bottom of the support frame, which greatly improves the flexibility of use of the working platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Create an overall structural diagram for the present invention.

[0024] Figure 2 for Figure 1 Right view structural diagram.

[0025] Figure 3 for Figure 1 Schematic diagram of the structure viewed from above.

[0026] Figure 4 for Figure 1 Part I is an enlarged cross-sectional view of the structure.

[0027] Figure 5 for Figure 4 Another schematic diagram of the structure of the embodiment.

[0028] Figure 6 for Figure 4 Another schematic diagram of the structure of the embodiment.

[0029] Figure 7 for Figure 4 Another schematic diagram of the structure of the embodiment.

[0030] Figure 8 for Figure 4 Another schematic diagram of the structure of the embodiment.

[0031] 1-steel plate 2-first steel pipe 3-second steel pipe 4-first bolt 5-third steel pipe 6-second bolt 7-fourth steel pipe 8-limiting hole 9-fifth steel pipe 10-third bolt 11-fourth bolt 12-sixth steel pipe 13-moving part 14-ladder 15-sealing end plate 16-arc groove 17-fixed ball 18-sliding block. DETAILED DESCRIPTION

[0032] The technical solution created by the present invention is further defined below in conjunction with the accompanying drawings and specific implementation methods, but the scope of protection required is not limited to the description.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the assembled rotatable working platform includes a support frame and a steel plate 1 installed on the top of the support frame; the support frame includes a plurality of sixth steel pipes 12, a plurality of first steel pipes 2, a plurality of second steel pipes 3 and an adjustable connecting piece connected between the lower surface of the second steel pipe 3 and the top of the sixth steel pipe 12, so that the support frame is connected in an assembled manner, the flexibility of the support frame installation is improved, and an adjustable connecting piece is provided between the lower surface of the second steel pipe and the top of the sixth steel pipe, so that the support frame is flexible and adjustable in the height direction, and the convenience is improved; a fifth steel pipe 9 is provided near the bottom end of the sixth steel pipe 12 and between two adjacent sixth steel pipes 12, and the fifth steel pipe 9 and the sixth steel pipe The fourth bolt 11 is used to connect the tubes 12, which ensures the stability of the bottom end of the support frame and the flexibility of installation and detachable installation of the bottom end of the support frame; the adjustable connector is fixedly connected to the lower surface of the second steel tube 3, and the second steel tube 3 and the first steel tube 2 are perpendicular to each other; the first steel tube 2 and the second steel tube 3 are connected by the first bolt 4, so that the first steel tube 2, the second steel tube 3 and the adjustable connector are connected to each other as a whole, which improves the stability of the top of the support frame and the convenience and flexibility of disassembly and installation; a ladder 14 is provided between the second steel tube 3 and the fifth steel tube 9, which is convenient for construction personnel to climb to the top of the working platform to realize construction operations. The steel plate 1 is provided with a through hole for the first bolt 4 to pass through, so that after the steel plate 1 is laid on the top of the support frame, it can be fastened with the first bolt 4 to improve the overall stability of the steel plate 1 on the support frame.

[0034] Specifically, during the manufacturing process, the technicians in this field selected a 3mm thick steel plate, and the first steel pipe 2, the second steel pipe 3, the sixth steel pipe 12, and the fifth steel pipe 9 all selected a square steel pipe with a side length of 60mm, and the wall thickness of the square steel pipe was 5mm; according to the overall structure of the support frame, the square steel pipe was cut and threaded, and then the steel pipe was cut according to the following steps: Figure 1 , Figure 2 , Figure 3 and Figure 4 The structure shown in the figure uses the first bolt 4 and the fourth bolt 11 to match and connect with the corresponding threaded holes to form a support frame, and the surface of the steel plate 1 is perforated with holes corresponding to the first bolt 4, so that the first bolt 4 can tighten and connect the first steel pipe 2, the second steel pipe 3 and the adjustable connector, and fix the steel plate 1 on the top of the support frame to improve the overall stability. Compared with the traditional scaffolding erection and welding, the invention adopts the bolt directly through the steel pipe connection method, so that the steel pipe is stressed on several bolt structures, thereby enhancing the overall stability of the support frame and reducing the friction noise and wear between the steel pipes, which helps to extend the overall service life of the support frame.

[0035] like Figure 1 , Figure 2 , Figure 4, Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the adjustable connector includes a third steel tube 5 and a fourth steel tube 7, the third steel tube 5 is welded to the lower surface of the second steel tube 3; the top end of the fourth steel tube 7 is inserted into the third steel tube 5, and the bottom end of the fourth steel tube 7 is inserted into the sixth steel tube 12; the fourth steel tube 7 is provided with a plurality of limiting holes 8, and the sixth steel tube 12 is provided with a fixing hole near the top end; the fixing hole is provided with a third bolt 10, and the third bolt 10 can pass through the limiting hole 8. The relative position between the fourth steel tube 7 and the sixth steel tube 12 is fully avoided, so as to facilitate the adjustment of the height of the support frame and improve the stability. The fourth steel tube 7 is directly inserted into the third steel tube 5 at the top end, and the third steel tube 5 is welded to the lower surface of the second steel tube 3, so as to realize the insertion of the fourth steel tube 7 into the third steel tube 5, thereby ensuring the stability of the connection. During production, the third steel tube 5 is a square steel tube with a side length of 60 mm and a wall thickness of 5 mm; the fourth steel tube 7 is a square steel tube with a side length of 50 mm and a wall thickness of 5 mm, and the fourth steel tube 7 can be inserted into the third steel tube 5.

[0036] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the fourth steel pipe 7 is connected to the third steel pipe 5 by a second bolt 6, thereby enhancing the connection stability.

[0037] like Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the fourth steel pipe 7 is connected to the third steel pipe 5 by an internal fastener. In some embodiments, the internal fastener is a sealed end plate 15 welded to the top of the third steel pipe 5, and a threaded hole is provided in the center of the sealed end plate 15, and the threaded hole can be screwed into the bottom end of the first bolt 4. When the first bolt 4 is screwed into the first steel pipe 2, the second steel pipe 3, and the steel plate 1, it can be screwed into the threaded hole in the center of the sealed end plate 15, so that the third steel pipe 5 is connected to the first steel pipe 2, the second steel pipe 3, and the steel plate 1 as a whole, which improves the overall stability of the connection.

[0038] like Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in some embodiments, the fourth steel tube 7 is connected to the third steel tube 5 by an internal fastener. The internal fastener includes a through hole provided on the fourth steel tube 7 and an arc-shaped groove 16 provided on the inner wall of the third steel tube 5; a fixed ball 17 is provided in the through hole, and a plurality of springs are provided between the outer wall of the fixed ball 17 and the inner wall of the through hole, and the springs can balance and fix the fixed ball 17 in the through hole; the fixed ball 17 can be engaged in the arc-shaped groove 16. When the fourth steel tube 17 is inserted into the third steel tube 5, the fixed ball 17 is squeezed by the inner wall of the third steel tube 5 and deviates into the fourth steel tube 7, and is pulled into the through hole by the action of the spring, so that when the fourth steel tube 7 is inserted into the position of the arc-shaped groove 16 in the third steel tube 5, the fixed ball 17 is pulled back by the action of the spring and engaged in the arc-shaped groove 16, so as to achieve a stable connection between the fourth steel tube 17 and the third steel tube 5.

[0039] like Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the fourth steel tube 7 is connected to the third steel tube 5 by an internal fastener. The internal fastener includes a through hole provided on the fourth steel tube 7 and an arc-shaped groove 16 provided on the inner wall of the third steel tube 5; a fixed ball 17 is provided in the through hole, and a plurality of springs are provided between the outer wall of the fixed ball 17 and the inner wall of the through hole, and the springs can balance and fix the fixed ball 17 in the through hole; the fixed ball 17 can be engaged in the arc-shaped groove 16. When the fourth steel tube 17 is inserted into the third steel tube 5, the fixed ball 17 is squeezed by the inner wall of the third steel tube 5 and deviates into the fourth steel tube 7, and is pulled into the through hole by the action of the spring, so that when the fourth steel tube 7 is inserted into the position of the arc-shaped groove 16 in the third steel tube 5, the fixed ball 17 is pulled back by the action of the spring and engaged in the arc-shaped groove 16, so as to achieve a stable connection between the fourth steel tube 17 and the third steel tube 5. The top of the third steel tube 5 is welded with a sealing end plate 15, and the center of the sealing end plate 15 is provided with a threaded hole, and the threaded hole can be screwed into the bottom end of the first bolt 4. After the fourth steel tube 7 is inserted into the third steel tube 5, and then the first bolt 4 is screwed into the threaded hole, the sealing end plate 15 tightens the fourth steel tube 7, and a stable connection is achieved under the interaction between the fixed ball 17 and the arc groove 16, and the sealing end plate 15 and the first bolt 4, while improving the stability and flexibility of the connection.

[0040] like Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in some embodiments, the fourth steel tube 7 is connected to the third steel tube 5 by an internal fastener. The internal fastener includes a through hole provided on the fourth steel tube 7 and an arc-shaped groove 16 provided on the inner wall of the third steel tube 5; a fixed ball 17 is provided in the through hole, and a plurality of springs are provided between the outer wall of the fixed ball 17 and the inner wall of the through hole, and the springs can balance and fix the fixed ball 17 in the through hole; the fixed ball 17 can be engaged in the arc-shaped groove 16. When the fourth steel tube 17 is inserted into the third steel tube 5, the fixed ball 17 is squeezed by the inner wall of the third steel tube 5 and deviates into the fourth steel tube 7, and is pulled into the through hole by the action of the spring, so that when the fourth steel tube 7 is inserted into the position of the arc-shaped groove 16 in the third steel tube 5, the fixed ball 17 is pulled back by the action of the spring and engaged in the arc-shaped groove 16, so as to achieve a stable connection between the fourth steel tube 17 and the third steel tube 5. The fourth steel tube 7 is provided with a sliding block 18 near the top, and the sliding block 18 can be pushed by the first bolt 4 to slide down to the position of the fixing ball 17. The sliding block 18 slides downward to press against the fixing ball 17, so that the fixing ball 17 forms a force to press against the inner wall of the arc-shaped groove 16 on the third steel tube 5, thereby enhancing the stability of the connection of the fixing ball 17.

[0041] like Figure 8 As shown, in some embodiments, a cone or tetrahedron is provided at the bottom of the sliding block 18. When the sliding block 18 is pushed downward, the fixing ball 17 is subjected to an outward extrusion force under the action of the cone or tetrahedron, thereby improving the stability of the connection and the convenience of the installation and disassembly process. The fixing ball 17 used in the invention is an iron ball, a steel ball, etc.

[0042] like Figure 1 and Figure 2 As shown, in some embodiments, a moving part 13 is provided at the bottom of the support frame. The movable operation of the working platform is realized. Specifically, a locking assembly is provided on the moving part 13, which can realize that after the working platform is moved, the locking assembly is locked, so that the moving part 13 is fixed and the overall stability of the working platform is enhanced. Specifically, the researchers who created the present invention selected universal wheels with clamping and locking components in the actual production and application process.

[0043] The invention provides an adjustable connector on the assembled and rotatable work platform and studies the structure of the adjustable connector to ensure the overall assembled connection mode of the work platform, improve the flexibility of the connection, and ensure the stability of the overall structure of the work platform support frame. Figure 7As shown, the specific adjustable connecting part includes a third steel tube 5 and a fourth steel tube 7, the third steel tube 5 is welded to the lower surface of the second steel tube 3; the top end of the fourth steel tube 7 is inserted into the third steel tube 5, and the bottom end of the fourth steel tube 7 is inserted into the sixth steel tube 12; a plurality of limiting holes 8 are provided on the fourth steel tube 7, and a fixing hole is provided near the top of the sixth steel tube 12; a third bolt 10 is provided in the fixing hole, and the third bolt 10 can pass through the limiting hole 8; the fourth steel tube 7 and the third steel tube 5 are connected by an internal fastener. After the fourth steel tube 7 and the sixth steel tube 12 are fixedly connected, the second steel tube 3 can be directly connected to the top of the fourth steel tube 7 through the action of the third steel tube 5, and the fourth steel tube 7 and the third steel tube 5 can be stably connected under the action of the inner fastener. The specific connection process is that when the top of the fourth steel tube 7 is inserted from the bottom of the third steel tube 5, as the fourth steel tube 7 continuously enters the third steel tube 5, the inner fastener is squeezed by the inner wall of the third steel tube 5 and enters the third steel tube 5, and is engaged in the third steel tube 5 to achieve a stable connection; and when disassembly is required, the third steel tube 5 and the fourth steel tube 7 are pulled apart by interaction, so that the inner fastener is squeezed and deformed, and then the purpose of separating the third steel tube 5 from the fourth steel tube 7 is achieved. Figure 8 As shown, the fourth steel pipe 7 is provided with a sliding block 18 near the top, and the sliding block 18 can be pushed by the first bolt 4 and slide down to the position of the inner fastener. In this way, the inner fastener can be tightened and fixed under the force of the first bolt 4.

[0044] Other matters not covered by the present invention may be implemented by referring to the prior art or common knowledge and conventional technical means known to those skilled in the art.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable connector for an assembled, turnable working platform, It is characterized in that It comprises a third steel pipe (5) and a fourth steel pipe (7), wherein the third steel pipe (5) is welded to the lower surface of the second steel pipe (3); the top end of the fourth steel pipe (7) is inserted into the third steel pipe (5), and the bottom end of the fourth steel pipe (7) is inserted into the sixth steel pipe (12); the fourth steel pipe (7) is provided with a plurality of limiting holes (8), and the sixth steel pipe (12) is provided with a fixing hole near the top end; a third bolt (10) is provided in the fixing hole, and the third bolt (10) can pass through the limiting hole (8); the fourth steel pipe (7) and the third steel pipe (5) are connected by an internal fastener.

2. The adjustable connector for the assembled turnable working platform according to claim 1, It is characterized in that The fourth steel pipe (7) is connected to the third steel pipe (5) via a second bolt (6).

3. The adjustable connector for the assembled turnable working platform according to claim 1, It is characterized in that A sealing end plate (15) is welded to the top end of the third steel pipe (5), and a threaded hole is provided at the center of the sealing end plate (15), wherein the bottom end of the first bolt (4) can be screwed into the threaded hole.

4. The adjustable connector for the assembled turnable working platform according to claim 1, It is characterized in that The second steel pipe (3) is a square steel pipe with a side length of 60 mm and a wall thickness of 5 mm.

5. The adjustable connector for the assembled turnable working platform according to claim 1, It is characterized in that The inner fastener comprises a through hole provided on the fourth steel tube (7) and an arc-shaped groove (16) provided on the inner wall of the third steel tube (5); a fixing ball (17) is provided in the through hole, a plurality of springs are provided between the outer wall of the fixing ball (17) and the inner wall of the through hole, and the springs can balance and fix the fixing ball (17) in the through hole; the fixing ball (17) can be engaged in the arc-shaped groove (16).

6. The adjustable connector for the assembled turnable working platform as claimed in claim 5, It is characterized in that The fourth steel pipe (7) is provided with a sliding block (18) near the top end, and the sliding block (18) can be pushed by the first bolt (4) to slide down to the position of the fixed ball (17).

7. The adjustable connector for the assembled turnable working platform as claimed in claim 6, It is characterized in that The bottom end of the sliding block (18) is provided with a cone or a tetrahedron.

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