Quick-release steel pipe operating frame
By designing a quick-release disc-lock steel pipe operating frame, the disc-lock structure and wedge pins enable rapid connection, solving the problems of time-consuming assembly and disassembly, large errors, and poor adaptability to narrow spaces associated with traditional steel pipe operating frames. This provides a solution that offers rapid assembly and disassembly with high stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 浙江省三建建设集团有限公司
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-23
AI Technical Summary
The existing steel pipe operating frame is time-consuming and labor-intensive to assemble and disassemble, has large errors due to manual erection, and is poorly adaptable to narrow spaces. In addition, it requires the embedding of pre-embedded parts in the wall, which leads to inconvenience in construction and potential structural water seepage hazards.
The quick-release disc-lock steel pipe operating frame includes vertical poles, quick-release units, telescopic fasteners, and diagonal braces. It achieves rapid connection through disc-lock structure and wedge pins, and does not require pre-embedded parts in the wall. It is fastened to the building wall by telescopic fasteners to form a triangular stable support system.
It achieves rapid assembly and disassembly, precise positioning, and high stability, making it particularly suitable for narrow spaces. It avoids the use of embedded parts and improves construction efficiency and safety.
Smart Images

Figure CN224396016U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building technology and relates to a quick-release steel pipe operating frame, especially a quick-release steel pipe operating frame suitable for use in narrow spaces. Background Technology
[0002] Currently, on modern construction sites, scaffolding, composed of multiple interconnected steel pipes, is one of the main types of building structures. Steel pipes are characterized by high strength, light weight, and high rigidity, making them particularly suitable for constructing ultra-tall and ultra-heavy buildings. Furthermore, scaffolding is frequently erected during construction to provide workers with a means of movement when working at heights. When constructing a steel pipe scaffolding, multiple steel pipes are connected together using couplers to form the scaffolding. Traditional coupler-type steel pipe scaffolding, a commonly used temporary support system in construction, mainly consists of steel pipe members connected by right-angle couplers, swivel couplers, and butt couplers. Its core structural features include: the spacing between uprights is typically 1.2-1.5m, the step distance is 1.5-1.8m, and semi-rigid connections in the spatial frame structure are achieved through coupler nodes. This system suffers from three major technical defects: First, it is time-consuming and labor-intensive to assemble and disassemble: it requires several construction workers to spend a significant amount of time installing each node, resulting in low efficiency. Second, manual erection has significant errors: overlapping relies on manual judgment, leading to arbitrariness and uneven spacing between uprights and steps due to differences in worker experience, severely affecting overall stability. Third, it has poor adaptability to narrow spaces: when the height-to-width ratio exceeds 2, it requires pre-embedded wall ties to compensate for stability, making construction inconvenient and potentially causing structural water seepage. While the disc-lock scaffolding proposed in patent CN116335384A simplifies installation and avoids bolt fixing, and although there have been attempts to improve it, its rapid adaptability to narrow spaces still needs optimization. Pre-embedded parts still need to be installed within the wall during use, making it unsuitable for narrow spaces.
[0003] Therefore, there is an urgent need for a steel pipe operating frame that is suitable for narrow spaces, has efficient assembly and disassembly characteristics, is quick to assemble and disassemble, and does not require the installation of pre-embedded parts in the wall during use. Summary of the Invention
[0004] To overcome the shortcomings of the existing technology, a quick-release disc-lock steel pipe operating frame is designed that combines applicability to narrow spaces with efficient assembly and disassembly, rapid assembly and disassembly, and no need to embed pre-embedded parts in the wall during use.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] The quick-release fastener type steel pipe operating frame of this utility model includes multiple vertically arranged uprights, and the outer surface of each upright is provided with disc buckle structures at intervals along its axial direction. It also includes:
[0007] Multiple quick-release units, each unit including a crossbar and a telescopic fastener, wherein the crossbar has a first engaging portion at both ends, which forms a detachable snap-fit with the disc buckle structure; the telescopic fastener is positioned between the building wall and the nearest upright, and the telescopic fastener, together with the crossbar on the same floor, achieves relative fastening between the upright and the building wall; and
[0008] The diagonal brace is installed between any two adjacent quick-release units, with its upper and lower ends connected to the corresponding horizontal bar via a quick-connect mechanism. Together with the horizontal bar and the vertical bar, it forms a triangular stable support system.
[0009] As a preferred embodiment of this application, the disc buckle is provided with at least two sets of positioning pin holes arranged in the circumferential direction.
[0010] As a preferred embodiment of this application, at least one diagonal brace is provided between each two adjacent layers of crossbars, and its two ends are respectively connected to the vertically offset ends of the two adjacent layers of crossbars through a quick-connect mechanism.
[0011] As a preferred embodiment of this application, the first engaging portion is provided with a first slot adapted to the disc buckle structure, and a coaxial first wedge-shaped hole is provided on the two groove walls of the first slot. The locking between the first engaging portion and the disc buckle structure is achieved by passing a wedge-shaped pin through the first wedge hole and the positioning pin hole.
[0012] As a preferred embodiment of this application, the first slot is a wedge-shaped slot, and the width of the slot opening is slightly smaller than the width of the slot bottom.
[0013] As a preferred embodiment of this application, the telescopic fastener comprises:
[0014] A screw, one end of which is fixed to a pressure plate that presses against the building surface, and the other end is provided with an external thread; and
[0015] A sleeve, the inner wall of which is provided with an internal thread that mates with the external thread, is sleeved on the outside of the screw rod by means of a threaded connection;
[0016] The second engaging part is located at the end of the sleeve away from the pressure plate, and its structure is configured to form a detachable snap-fit engagement with the disc buckle structure.
[0017] As a preferred embodiment of this application, the second engaging portion is provided with a second engaging groove adapted to the disc buckle structure, and the two groove walls of the second engaging groove are provided with coaxial second wedge holes. The locking between the second engaging portion and the disc buckle structure is achieved by passing a wedge pin through the second wedge hole and the positioning pin hole.
[0018] As a preferred embodiment of this application, the second slot is a wedge-shaped slot, and the slot opening width is slightly smaller than the slot bottom width.
[0019] As a preferred embodiment of this application, a reinforcing positioning plate is provided between the screw and the pressure plate, and the three form a vertical connection structure.
[0020] As a preferred embodiment of this application, the surface of the pressure plate facing the building wall is processed with anti-slip texture.
[0021] Alternatively, the surface of the pressure plate facing the building wall is adhered with an anti-slip pad.
[0022] As a preferred embodiment of this application, the quick-release fastener type steel pipe operating frame further includes a level detector for real-time display of the levelness of the crossbar and telescopic fastener.
[0023] As a preferred embodiment of this application, the horizontal detector comprises:
[0024] The base has a mounting groove at the top that matches the shape of the horizontal bubble tube, and a magnetic fixing surface at the bottom, in which a permanent magnet is embedded.
[0025] A columnar horizontal bubble tube is installed in the mounting groove. Inside the tube is a closed bubble chamber that extends axially. The bubble chamber is filled with liquid and a movable bubble that floats on the liquid to identify the levelness. A reference scale line is provided at the center of the top of the closed bubble chamber.
[0026] As a preferred embodiment of this application, the parallelism error between the axis of the horizontal bubble tube and the magnetic fixing surface is ≤0.5°. In use, simply attach the level detector to the top of the crossbar or telescopic fastener to be inspected, and the levelness can be quickly determined by the position of the movable bubble. Since both the first and second slots are wedge-shaped, the position of the crossbar or telescopic fastener can be finely adjusted, thereby ensuring the levelness of the crossbar or telescopic fastener, especially the telescopic fastener, thus preventing the telescopic fastener from bending due to uneven force and subsequent damage.
[0027] As a preferred embodiment of this application, the two ends of the diagonal brace are respectively provided with U-shaped slots, and the end of the corresponding crossbar is provided with a protrusion that adapts to the U-shaped slot. The assembly between the diagonal brace and the corresponding crossbar is achieved by the insertion and cooperation of the protrusion and the slot.
[0028] As a preferred embodiment of this application, the wedge-shaped pin is a wedge-shaped sheet structure that is wider at the top and narrower at the bottom, comprising:
[0029] The first contact surface is set as a plane perpendicular to the axis of the pin.
[0030] The second contact surface is set as an inclined surface at a preset angle to the axis of the pin body;
[0031] The inclination angle of the second contact surface matches the slope of the hole walls of the first wedge hole and the second wedge hole, forming a surface contact locking structure.
[0032] As a preferred embodiment of this application, the upper end of the wedge pin is provided with a blocking surface, and the lower end of the wedge pin is provided with a circular hole.
[0033] As a preferred embodiment of this application, pressure sensors are embedded in at least part of the surface of the pressure plate facing the building wall, which can keep the two telescopic fasteners of the brace under consistent force and help maintain the stability of the operating frame.
[0034] The beneficial effects of this utility model are:
[0035] 1. The quick-release disc buckle steel pipe operating frame in this application adopts a socket-type disc buckle ground frame. The uprights are supported on both sides by telescopic fasteners. The telescopic fasteners are divided into two parts, which are inserted into the sleeve by screws. One end is threaded with the sleeve, and the other end is firmly pressed against the top of the building wall, effectively preventing the frame from tipping over.
[0036] 2. This application does not require the installation of embedded parts in the wall. It only requires adjusting the length of the telescopic fastener. It is easy to operate, has high disassembly and assembly efficiency, quick adjustment, and accurate positioning. It is especially suitable for use in narrow spaces.
[0037] 3. The pressure plate surface of this application is processed with anti-slip texture, which can effectively prevent the telescopic fastener from sliding during the use of the operating frame and affecting the stability of the operating frame.
[0038] 4. In this application, diagonal bracing is provided between any two adjacent quick-release units on the operating frame. The diagonal bracing, together with the horizontal bar and the vertical bar, forms a triangular stable support system, which increases the stability of the operating frame. Attached Figure Description
[0039] Figure 1 This is one of the structural schematic diagrams of a quick-release disc buckle steel pipe operating frame according to an embodiment of the present utility model.
[0040] Figure 2 This is the second structural schematic diagram of the quick-release disc buckle steel pipe operating frame in one embodiment of this utility model.
[0041] Figure 3 for Figure 2 Enlarged view of point A.
[0042] Figure 4 This is a schematic diagram of the crossbar structure of this utility model.
[0043] Figure 5 This is a schematic diagram of the installation of the crossbar and wedge pin of this utility model.
[0044] Figure 6This is an axial view of a telescopic fastener according to an embodiment of the present invention.
[0045] Figure 7 for Figure 6 BB-direction sectional view.
[0046] Figure 8 This is an axial view of a telescopic fastener according to another embodiment of the present invention.
[0047] Figure 9 This is a schematic diagram of the installation of the sleeve and wedge pin of this utility model.
[0048] Figure 10 This is a structural diagram of the wedge pin of this utility model.
[0049] Figure 11 This is a structural diagram of the horizontal detector of this utility model.
[0050] Among them, 1-upright pole; 11-disc buckle structure; 2-quick release unit; 21-crossbar; 211-quick connection mechanism; 212-first engaging part; 2121-first slot; 22-telescopic fastener; 221-screw; 2211-pressure plate; 2212-reinforced positioning plate; 222-sleeve; 223-second engaging part; 2231-second slot; 23-wedge pin; 231-first contact surface; 232-second contact surface; 233-round hole; 234-blocking surface; 24-level detector; 241-base; 2411-magnetic fixing surface; 2412-permanent magnet; 242-column-shaped horizontal bubble tube; 3-diagonal brace; 31-slot; 4-building wall. Detailed Implementation
[0051] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application.
[0052] It should be noted that the process equipment or apparatus not specifically mentioned in the following embodiments are all conventional equipment or apparatus in the art.
[0053] Furthermore, it should be understood that the existence of other method steps before or after the combined steps, or the insertion of other method steps between these explicitly mentioned steps, does not preclude the existence of other method steps before or after the combined steps, or the insertion of other method steps between these explicitly mentioned steps, unless otherwise stated. It should also be understood that the combined connection relationship between one or more devices / apparatus mentioned in this application does not preclude the existence of other devices / apparatus before or after the combined devices / apparatus, or the insertion of other devices / apparatus between these explicitly mentioned devices / apparatus, unless otherwise stated. Moreover, unless otherwise stated, the numbering of each method step is merely a convenient tool for identifying each method step, and not for limiting the order of the method steps or limiting the scope of implementation of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this application.
[0054] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0055] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," "axial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0058] The present application will be further described below with reference to specific embodiments, but the scope of protection of the present application is not limited thereto.
[0059] like Figure 1 and Figure 2 As shown, the quick-release disc-lock steel pipe operating frame of this utility model includes multiple vertically arranged uprights 1, and disc-lock structures 11 are spaced apart along the axial direction on the outer surface of the uprights 1. The feature is that it further includes:
[0060] Multiple quick-release units 2, each quick-release unit 2 including a crossbar 21 and a telescopic fastener 22, the two ends of the crossbar 21 are provided with first engaging portions 212, the first engaging portions 212 and the disc buckle structure 11 form a detachable snap-fit engagement; the telescopic fastener 22 is disposed between the building wall 4 and the nearest upright 1, the adjustable telescopic fastener 22 and the crossbar 21 on the same floor together achieve relative fastening between the upright 1 and the building wall 4; and
[0061] The diagonal brace 3 is set between any two adjacent quick-release units 2, and its upper and lower ends are connected to the corresponding horizontal bar 21 through the quick connection mechanism 211, forming a triangular stable support system together with the horizontal bar 21 and the vertical bar 1.
[0062] like Figure 1 and Figure 2 As shown, at least one diagonal brace 3 is configured between each two adjacent layers of crossbars 21, and its two ends are respectively connected to the vertically offset ends of the two adjacent layers of crossbars 21 through a quick connection mechanism 211.
[0063] In some embodiments of this application, the disc buckle structure 11 is provided with at least two sets of positioning pin holes arranged in the circumferential direction.
[0064] like Figure 4 and Figure 5As shown, the first engaging part 212 is provided with a first slot 2121 adapted to the disc buckle structure 11. The two slot walls of the first slot 2121 are provided with coaxial first wedge holes. The locking between the first engaging part 212 and the disc buckle structure 11 is achieved by the wedge pin 23 passing through the first wedge hole and the positioning pin hole.
[0065] like Figure 4 As shown, the first slot is a wedge-shaped slot, and the width of the slot opening is slightly smaller than the width of the slot bottom.
[0066] like Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the telescopic fastener 22 includes:
[0067] Screw 221, one end of which is fixedly connected to a pressure plate 2211 that presses against the building surface, and the other end is provided with an external thread; and
[0068] The sleeve 222 has an internal thread on its inner wall that mates with the external thread, and the sleeve 222 is fitted onto the outside of the screw 221 by means of a threaded connection;
[0069] The second engaging part 223 is located at the end of the sleeve 222 away from the pressure plate 2211, and its structure is configured to form a detachable snap-fit engagement with the disc buckle structure 11.
[0070] like Figure 8 and Figure 9 As shown, the second engaging part 223 is provided with a second slot 2231 that is adapted to the disc buckle structure 11. The two slot walls of the second slot 2231 are provided with coaxial second wedge holes. The second engaging part 223 and the disc buckle structure 11 are locked by the wedge pin 23 passing through the second wedge hole and the positioning pin hole.
[0071] like Figure 8 and Figure 9 As shown, the second slot is a wedge-shaped slot, and the width of the slot opening is slightly smaller than the width of the slot bottom.
[0072] like Figure 7 As shown, a reinforcing positioning plate 2212 is provided between the screw 221 and the pressure plate 2211, and the three form a vertical connection structure.
[0073] In some embodiments of this application, the surface of the pressure plate 2211 facing the building wall is adhered with an anti-slip pad.
[0074] like Figure 1 and Figure 2As shown, the two ends of the diagonal brace 3 are respectively provided with slots 31. The quick connection mechanism 211 is a protrusion provided at the end of the crossbar 21 and adapted to the slots 31. The assembly between the diagonal brace 3 and the corresponding crossbar 21 is realized through the insertion and cooperation of the protrusion and the slot.
[0075] like Figure 11 As shown, the quick-release fastener type steel pipe operating frame also includes a level detector 24 for real-time display of the levelness of the crossbar and telescopic fastener.
[0076] like Figure 11 As shown, the horizontal detector 24 includes:
[0077] The base 241 has a mounting groove at the top that matches the shape of the horizontal bubble tube, and a magnetic fixing surface 2411 at the bottom, in which a permanent magnet 2412 is embedded.
[0078] A columnar horizontal bubble tube 242 is installed in the mounting groove. It has a closed bubble chamber extending axially inside. The bubble chamber is filled with liquid and a movable bubble floating on the liquid for identifying the levelness. A reference scale line is provided at the top center of the closed bubble chamber.
[0079] like Figure 11 As shown, the parallelism error between the axis of the horizontal bubble tube and the magnetic fixing surface is ≤0.5°. In use, simply attach the level detector to the top of the crossbar or telescopic fastener to be inspected, and the levelness can be quickly determined by the position of the movable bubble. Since both the first and second slots are wedge-shaped, the position of the crossbar or telescopic fastener can be finely adjusted, thereby ensuring the levelness of the crossbar or telescopic fastener, especially the telescopic fastener, thus preventing the telescopic fastener from bending due to uneven force and subsequent damage.
[0080] like Figure 10 As shown, the wedge-shaped pin 23 is a wedge-shaped sheet structure that is wider at the top and narrower at the bottom, comprising:
[0081] The first contact surface 231 is set as a plane perpendicular to the axis of the wedge pin 23;
[0082] The second contact surface 232 is configured as an inclined surface at an acute angle to the axis of the wedge pin 23;
[0083] The tilt angle of the second contact surface 232 matches the slope of the hole walls of the first wedge hole and the second wedge hole, forming a surface contact locking structure.
[0084] like Figure 10As shown, the upper end of the wedge pin 23 is provided with a blocking surface 234, and the lower end of the wedge pin 23 is provided with a circular hole 233. After the operating frame is removed, a rope can be threaded through the circular hole 233 to prevent the wedge pin from being lost.
[0085] In some embodiments of this application, pressure sensors are embedded in at least part of the surface of the pressure plate facing the building wall. This can keep the two telescopic fasteners of the support under equal force, which helps to maintain the stability of the operating frame and prevents the telescopic fasteners from bending due to uneven force, thus preventing damage.
[0086] The above embodiments are for illustrating the implementation schemes disclosed in this invention and should not be construed as limiting the invention. Furthermore, various modifications listed herein, as well as variations in the methods and compositions of the invention, will be apparent to those skilled in the art without departing from the scope and spirit of the invention. Although the invention has been specifically described in conjunction with various specific preferred embodiments, it should be understood that the invention should not be limited to these specific embodiments. In fact, various modifications as described above that are obvious to those skilled in the art to obtain the invention should be included within the scope of this invention.
Claims
1. A quick-release steel pipe operating frame, comprising multiple vertically arranged uprights (1), wherein the outer surface of the uprights (1) is provided with disc buckle structures (11) spaced apart along its axial direction, characterized in that, Also includes: Multiple quick-release units (2), each quick-release unit (2) includes a crossbar (21) and a telescopic fastener (22). The two ends of the crossbar (21) are provided with first engaging parts (212), which form a detachable snap-fit with the disc buckle structure (11). The telescopic fastener (22) is located between the building wall (4) and the nearest upright (1). The telescopic fastener (22) and the crossbar (21) on the same floor together achieve relative fastening between the upright (1) and the building wall (4). The diagonal brace (3) is set between any two adjacent quick-release units (2), and its upper and lower ends are connected to the corresponding horizontal bar (21) through the quick connection mechanism (211), forming a triangular stable support system together with the horizontal bar (21) and the vertical bar (1).
2. The quick-release steel pipe operating frame according to claim 1, characterized in that: At least one diagonal brace (3) is provided between each two adjacent horizontal bars (21), and its two ends are respectively connected to the vertically offset ends of the two adjacent horizontal bars (21) through a quick connection mechanism (211).
3. The quick-release steel pipe operating frame according to claim 1, characterized in that: The disc buckle structure (11) has at least two sets of positioning pin holes arranged in the circumferential direction.
4. The quick-release steel pipe operating frame according to claim 3, characterized in that: The first engaging part (212) is provided with a first slot (2121) adapted to the disc buckle structure (11). The two slot walls of the first slot (2121) are provided with coaxial first wedge holes. The locking between the first engaging part (212) and the disc buckle structure (11) is achieved by passing through the first wedge hole and the positioning pin hole with a wedge pin (23).
5. The quick-release steel pipe operating frame according to claim 4, characterized in that, The telescopic fastener (22) includes: A screw (221), one end of which is fixed to a pressure plate (2211) that presses against the building surface, and the other end is provided with an external thread; and The sleeve (222) has an internal thread on its inner wall that mates with the external thread, and the sleeve (222) is fitted onto the outside of the screw (221) by means of a threaded connection; The second engaging part (223) is located at the end of the sleeve (222) away from the pressure plate (2211), and its structure is configured to form a detachable engaging engagement with the disc buckle structure (11).
6. The quick-release steel pipe operating frame according to claim 5, characterized in that: The second engaging part (223) is provided with a second slot (2231) adapted to the disc buckle structure (11). The two groove walls of the second slot (2231) are provided with coaxial second wedge holes. The second engaging part (223) and the disc buckle structure (11) are locked by passing through the second wedge hole and the positioning pin hole with a wedge pin (23).
7. The quick-release steel pipe operating frame according to claim 5, characterized in that: A reinforcing positioning plate (2212) is provided between the screw (221) and the pressure plate (2211), and the three form a vertical connection structure.
8. The quick-release steel pipe operating frame according to claim 1, characterized in that: The two ends of the diagonal brace (3) are respectively provided with slots (31). The quick connection mechanism (211) is a protrusion provided at the end of the crossbar (21) and adapted to the slot (31). The assembly between the diagonal brace (3) and the corresponding crossbar (21) is realized through the insertion and cooperation of the protrusion and the slot.
9. The quick-release steel pipe operating frame according to claim 6, characterized in that, The wedge-shaped pin (23) is a wedge-shaped sheet structure that is wider at the top and narrower at the bottom, including: The first contact surface (231) is set as a plane perpendicular to the axis of the wedge pin (23); The second contact surface (232) is set as an inclined surface at an acute angle to the axis of the wedge pin (23); The tilt angle of the second contact surface (232) matches the slope of the hole walls of the first wedge hole and the second wedge hole, forming a surface contact locking structure.
10. The quick-release steel pipe operating frame according to claim 9, characterized in that, The upper end of the wedge pin (23) is provided with a blocking surface, and the lower end of the wedge pin (23) is provided with a round hole (233).