Metal trestle convenient to disassemble and transport

Abstract

The utility model relates to the field of advertisement display and temporary shielding devices, in particular to a metal trestle convenient to disassemble and transport, which comprises a base and a trestle body, and is different from the prior art that the base comprises a bottom plate, the trestle body is formed by connecting pipe fittings and connecting pieces in an inserted mode, all the pipe fittings have the same section shape, and the connecting pieces are connected with the bottom plate in an inserted mode. All the connecting pieces are provided with inserting parts matched with the section shape of the pipe fitting, the inserting parts can be accurately inserted into the pipe fitting, and stable locking can be achieved after the inserting parts are inserted in place; when disassembly is needed, the inserting part can be conveniently unlocked and pulled out of the pipe fitting. Compared with the prior art, the disassembly convenience is obviously improved, the transportation convenience is enhanced, the damage risk of parts is reduced, the structure is stable and reliable, and the labor cost and the time cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of advertising display and temporary shielding devices, and in particular to a metal frame that is easy to disassemble and transport. Background Technology

[0002] Metal scaffolding is widely used in advertising displays and temporary screening scenarios. For example, at various exhibitions and promotional events, a large number of scaffolding are needed to hang advertising banners and display promotional information. Alternatively, at some construction sites and temporary construction areas, scaffolding is used to screen construction areas, protect pedestrian safety, and display relevant warning signs.

[0003] Traditional metal scaffolding systems typically employ complex connection methods. Like some existing similar devices, their structural design presents numerous inconveniences for disassembly. Some scaffolding frames are secured to the base with multiple screws, requiring workers to unscrew each screw individually when relocating or storing the equipment, consuming significant time and effort. Furthermore, in some complex connection areas, the limited space makes it difficult to use tools, further increasing the difficulty of disassembly.

[0004] Meanwhile, the connection between the support structure and crossbars of some scaffolding structures relies heavily on screws for fastening. This not only makes disassembly cumbersome but also easily leads to screw loss or thread damage during repeated disassembly and reassembly, affecting the reuse of the scaffolding. This inconvenient design severely restricts work efficiency in modern fast-paced event organization and venue change scenarios, increases labor and time costs, and fails to meet the needs of advertising displays and temporary occupancy businesses for rapid equipment deployment and relocation. Utility Model Content

[0005] The purpose of this utility model is to provide a metal frame that is easy to disassemble and transport, solving the problem of inconvenience in disassembling and transporting traditional metal frames. The technical solution adopted by this utility model is:

[0006] A metal frame that is easy to disassemble and transport includes a base and a frame. Unlike existing technologies, the base includes a bottom plate, and the frame is formed by inserting pipes and connectors. All the pipes have the same cross-sectional shape, and all the connectors are provided with insertion parts adapted to the cross-sectional shape of the pipes. These insertion parts can be accurately inserted into the pipes and can be securely locked after insertion. When disassembly is required, the insertion parts can be easily unlocked and pulled out from the pipes. The pipes include at least two short vertical pipes, two long vertical pipes, and two horizontal pipes. Two opposing first circles are respectively opened at the same distance from both ends of the short vertical pipes, long vertical pipes, and horizontal pipes. The fitting includes at least two straight sections, two tees, and two elbows. Each straight section has one insertion part, each elbow has two orthogonal insertion parts, and each tee has three T-shaped insertion parts. Each insertion part is an open tube. Two opposing second circular holes are opened at the same distance from the opening end of the insertion part to the first circular hole at the end of the fitting. A V-shaped spring is inserted into each insertion part. Both ends of the V-shaped spring pass through a retaining post and are bent so that the retaining post is fixed to the V-shaped spring and restricts the inner end of the post from passing through the second circular hole or the first circular hole. The two retaining posts are clearance-fitted with the second circular hole and the first circular hole.

[0007] Furthermore, the lower end of the straight section is fixedly connected to a first screw rod, which passes through the fourth circular hole in the middle of the base plate from top to bottom and is then screwed with a first nut. The plug-in part of the straight section is inserted into the lower end of the short riser. The plug-in part below the tee is inserted into the upper end of the short riser, the plug-in part above the tee is inserted into the lower end of the long riser, and the plug-in part in the middle of the tee is inserted into one end of the horizontal pipe. The plug-in part below the elbow is inserted into the upper end of the long riser, and the plug-in part inside the elbow is inserted into one end of the horizontal pipe.

[0008] Furthermore, the length of the locking post on the outer part of the V-shaped spring is greater than or equal to the sum of the thicknesses of the second circular hole and the first circular hole.

[0009] Furthermore, the outer end face of the retaining post is rounded.

[0010] Furthermore, the portion of the V-shaped spring that passes through the locking post is narrower to prevent the locking post from shifting.

[0011] Furthermore, third circular holes are respectively opened near both ends of the base plate, and the second screw on the swivel caster passes through the third circular hole from bottom to top and is screwed with the second nut.

[0012] Furthermore, the swivel caster is equipped with a braking device.

[0013] Furthermore, the braking device is a foot-operated braking structure, which achieves braking and unlocking through foot operation.

[0014] Furthermore, the cross-sectional shape of the pipe fitting is circular, square, regular hexagonal, regular octagonal, or petal-shaped.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] Significantly improved ease of disassembly: Traditional metal frames typically rely on a large number of screws to connect the components. Disassembly requires unscrewing each screw individually, which is cumbersome and time-consuming, especially when the space at the connection point is narrow and the tools are difficult to use. In contrast, the metal frame of this utility model adopts a plug-in method for pipes and connectors, and the plug-in part can be easily unlocked and pulled out, which greatly simplifies the disassembly operation, reduces the time and effort of manual operation, and improves the disassembly efficiency.

[0017] Enhanced transport convenience: Due to its easy disassembly, the metal frame can be broken down into multiple tubes and connectors. Compared with traditional one-piece or complexly connected frames, it occupies significantly less space, making it easier to store and transport. This helps reduce transportation costs and makes it more suitable for frequent relocation between different venues, meeting the needs of modern fast-paced event organization and venue changes.

[0018] Reduced risk of component damage: In traditional frame stands, screws are easily lost or the threads are damaged during repeated disassembly and assembly, affecting reuse. This utility model avoids the component damage problem caused by screws, improving the reusability and overall service life of the metal frame stand.

[0019] Stable and reliable structure: Although easy to disassemble, the well-designed plug-in parts can achieve a firm lock after being inserted into place, ensuring the structural stability of the frame during use and ensuring that it can be used normally in advertising display, temporary shielding and other scenarios, bearing the required weight and withstanding the corresponding external forces.

[0020] Reduced labor and time costs: The ability to quickly disassemble and assemble saves manpower and time. In scenarios such as large-scale exhibitions, promotional activities, and construction, it can effectively reduce the manpower and time costs spent on disassembling and assembling the scaffolding, improve overall work efficiency, and allow operators to focus more on the main business of the event, such as advertising setup or construction operations. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Example 1.

[0022] Figure 2 yes Figure 1 Partial diagram.

[0023] Figure 3-7 yes Figure 2 Enlarged views of points A, B, C, D, and E in the image.

[0024] Figure 8 This is a schematic diagram of the structure of Example 2. Detailed Implementation

[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "communication" 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example 1, such as Figure 1-7 The diagram shows a metal frame that is easy to disassemble and transport, comprising a base and a frame. The base includes a base plate 4. The frame is formed by inserting pipes and connectors. All the pipes have the same cross-sectional shape. All the connectors are provided with insertion parts 567 that are adapted to the cross-sectional shape of the pipes. The insertion parts can be accurately inserted into the pipes and can be securely locked after being inserted into place. When disassembly is required, the insertion parts can be easily unlocked and pulled out from the pipes.

[0029] Specifically, the pipe fitting includes two short risers 1, two long risers 2, and two horizontal pipes 3. Two opposing first circular holes 123 are respectively opened at equidistant points from both ends of each of the short risers 1, long risers 2, and horizontal pipes 3. The pipe fitting includes two straight sections 5, two tees 6, and two elbows 7. Each straight section 5 has one insertion part 567, each elbow 7 has two orthogonal insertion parts 567, and each tee 6 has three T-shaped insertion parts 567. Each insertion part 567 is an open tube. Two opposing second circular holes 5671 are opened at the same distance from the end of the pipe fitting as the first circular hole 123. A V-shaped spring piece 5672 is inserted into the insertion part 567. The two ends of the V-shaped spring piece 5672 pass through a locking post 5673 and are bent so that the locking post 5673 is fixed to the V-shaped spring piece 5672 and restricts the inner end of the post 5673 from passing through the second circular hole 5671 or the first circular hole 123. The two locking posts 5673 are in clearance fit with the second circular hole 5671 and the first circular hole 123.

[0030] The lower end of the straight section 5 is fixedly connected to the first screw 51. The first screw 51 passes through the fourth circular hole 41 in the middle of the base plate 4 from top to bottom and is screwed to the first nut 52. The insertion part 567 of the straight section 5 is inserted into the lower end of the short riser 1. The insertion part 567 below the tee 6 is inserted into the upper end of the short riser 1. The insertion part 567 above the tee 6 is inserted into the lower end of the long riser 2. The insertion part 567 in the middle of the tee 6 is inserted into one end of the horizontal pipe 3. The insertion part 567 below the elbow 7 is inserted into the upper end of the long riser 2. The insertion part 567 inside the elbow 7 is inserted into one end of the horizontal pipe 3.

[0031] The assembly, disassembly, and transportation process in this embodiment is as follows:

[0032] I. Installation process:

[0033] 1. Connection between the base and the straight connector:

[0034] The first screw 51, which is fixed to the lower end of the straight tube 5, passes through the fourth circular hole 41 in the middle of the base plate 4 from top to bottom, and then the first nut 52 is screwed in, so that the straight tube 5 and the base plate 4 are initially connected. This connection forms a stable structure through the first nut 52 and the first screw 51, and there is no need to disassemble it later. It can be used as a whole in the use of the horse frame.

[0035] Insert the connector 567 of the straight pipe 5 into the lower end of the short riser 1 to lay the foundation for subsequent frame assembly.

[0036] 2. Assembly of the frame:

[0037] Insert the lower connector 567 of the tee 6 into the upper end of the short riser 1, insert the upper connector 567 of the tee 6 into the lower end of the long riser 2, and insert the middle connector 567 of the tee 6 into one end of the horizontal pipe 3.

[0038] Insert the plug part 567 below the elbow 7 into the upper end of the long riser 2, and insert the plug part 567 inside the upper part of the elbow 7 into one end of the horizontal pipe 3.

[0039] During the insertion process, the two ends of the V-shaped spring piece 5672 inside the insertion part 567 pass through the locking post 5673 and then bend, so that the locking post 5673 is fixed to the V-shaped spring piece 5672, and the inner end of the locking post 5673 is restricted from passing through the second round hole 5671 or the first round hole 123. At the same time, the locking post 5673 is in clearance fit with the second round hole 5671 and the first round hole 123. When the insertion part 567 is inserted into the corresponding position of the pipe fitting, the cooperation of the V-shaped spring piece 5672 and the locking post 5673 achieves a stable lock, thereby completing the assembly of the frame.

[0040] II. Disassembly process:

[0041] 1. Disassembly of the frame:

[0042] When disassembling the frame, press the locking pin 5673 to make the locking pin 5673 overcome the elastic force of the V-shaped spring piece 5672 and release the lock on the plug part 567.

[0043] When disassembling connectors such as tees 6 and elbows 7, the connector can remain on one of the connected pipes. For example, tees 6 can remain on horizontal pipes 3, or elbows 7 can remain on vertical pipes 2, without completely separating the connector from the pipes. In this way, by operating the locking post 5673, only the connector is pulled out from part of the pipe, achieving partial disassembly of the frame. This avoids the cumbersome complete separation operation of traditional metal frame systems and simplifies the disassembly process.

[0044] This operating method makes full use of the plug-in structure and locking mechanism of the pipes and connectors, ensuring both ease of disassembly and the integrity of the disassembled parts, which facilitates subsequent management and transportation.

[0045] 2. Base treatment:

[0046] Since the nuts and screws do not need to be disassembled, the base part remains connected to the straight section 5, and it can be separated from the disassembled frame part only.

[0047] III. Transportation Process:

[0048] After disassembly, the metal frame can be broken down into components such as base retaining nuts and screws, and partially connected parts, including pipe fittings with connectors such as the combination of a tee 6 and a horizontal pipe 3, an elbow 7 and a long riser 2, and other independent pipe fittings such as a short riser 1. These components are easy to store and transport. Compared to traditional metal frames, the overall transport volume is significantly reduced, facilitating storage and transportation, avoiding the risk of component damage due to complex structures, and improving transportation efficiency.

[0049] As demonstrated by the above assembly, disassembly, and transportation process, this metal scaffold utilizes a plug-in structure of pipes and connectors, along with a unique locking mechanism, to achieve simple installation and disassembly. By not removing the nuts and bolts and allowing the connectors to remain on some of the pipes, it effectively solves the problem of inconvenient disassembly and transportation of traditional metal scaffolds. This provides convenience for the frequent use of scaffolds in various application scenarios such as advertising displays and temporary coverings, reduces operating and time costs, and meets the needs of modern events with their fast pace and frequent site changes.

[0050] Example 2, as Figure 8 As shown, the configuration is basically the same as in Example 1, except that one horizontal pipe 3, two long vertical pipes 2, and two tees 6 are added. The two lower long vertical pipes 2 are not connected to the horizontal pipe 3 via two elbows 7, but are instead connected to the two long vertical pipes 2 via two tees 6. The two upper long vertical pipes 2 are connected to one horizontal pipe 3 via two elbows 7. By adding components such as horizontal pipes, long vertical pipes, and tees, the connection structure is changed, allowing the overall height of the frame to be increased. In advertising display scenarios, a taller frame can increase the display area and visual impact, making the advertising content more easily noticed by viewers at a distance. In temporary shielding applications, a higher height can expand the shielding range, enhance the protective effect, and better meet the diverse height requirements of different scenarios. Although components have been added and the connection method changed, the use of pipe and connector insertion and a stable locking structure maintains good structural stability while increasing the height. This design ensures that the increased height of the frame allows it to safely and reliably support advertising banners, warning signs, and other items, preventing tipping or other safety issues due to structural instability during use and guaranteeing its proper functioning. This structural change provides users with more options; they can flexibly choose either Embodiment 1 or Embodiment 2 based on the actual space size and specific display or shading requirements of the application environment. This improves the adaptability of the metal frame in different application scenarios and better meets diverse market demands.

[0051] In another preferred embodiment, the length of the locking post 5673 on the outer portion of the V-shaped spring piece 5672 is greater than or equal to the sum of the thicknesses of the second circular hole 5671 and the first circular hole 123. This design ensures that the outer portion of the locking post can effectively hold the pipe in the locked state, providing a more stable locking effect. When the connector is inserted into the pipe, the locking post can fully extend, preventing the connector from accidentally coming out of the pipe due to external force or vibration. This enhances the stability and reliability of the overall frame structure during use, ensures the safety of the metal frame under load, and avoids safety hazards or structural damage caused by loose connections.

[0052] In another preferred embodiment, the outer end face of the retaining post 5673 is rounded. The rounded outer end face prevents sharp collisions between the retaining post and other components during assembly and disassembly, reducing friction and scratches between components. This not only protects the surface of the components and extends their service life, but also makes operation smoother, improving the user's experience during installation and disassembly, reducing operational difficulty, minimizing mechanical wear between components, and enhancing the overall structural durability.

[0053] In another preferred embodiment, the portion of the V-shaped spring clip 5672 passing through the locking post 5673 is narrower to prevent the locking post 5673 from shifting. By making the portion of the V-shaped spring clip passing through the locking post narrower, the position of the locking post can be precisely restricted, effectively preventing shifting during use. This helps maintain the stability of the locking post in the locked or unlocked position, ensuring that the locking post is always in the correct working position, avoiding the instability of the locking post position from affecting the connection between the connector and the pipe, thereby ensuring the structural stability and reliability of the frame during normal use and repeated disassembly and assembly.

[0054] In another preferred embodiment, third circular holes 42 are respectively opened near both ends of the base plate 4. The second screw 81 on the swivel caster 8 passes through the third circular holes 42 from bottom to top and is screwed with a second nut 82. This design facilitates the installation of the swivel caster, gives the metal frame a movable function, and allows for flexible movement and transfer when used in different positions. The connection method of screw and nut ensures a stable connection between the swivel caster and the base, while also facilitating later maintenance and replacement.

[0055] In another preferred embodiment, the omnidirectional caster 8 is equipped with a braking device, which is a foot-operated braking structure, enabling braking and unlocking via foot pedal operation. The braking device ensures the horse stand is stably fixed in the desired position during use, preventing safety hazards caused by accidental movement. For example, in advertising displays or temporary obstruction scenarios, it prevents the horse stand from shifting due to external forces, affecting its usability or causing accidents. The foot-operated braking structure is convenient and ergonomic, requiring no additional tools. Users can brake and unlock at any time via foot pedal operation, making the operation simple and intuitive, improving the convenience and flexibility of the horse stand, and meeting the needs of switching between moving and stationary states in different usage scenarios.

[0056] In this embodiment, the cross-sectional shape of the pipe fitting is petal-shaped. In other preferred embodiments, the cross-sectional shape of the pipe fitting can be circular, square, regular hexagonal, or regular octagonal. Providing a variety of cross-sectional shape options can meet different design and usage requirements. Different cross-sectional shapes will bring different mechanical properties. For example, circular pipe fittings have good load-bearing capacity and isotropy, and the stress is uniform; square pipe fittings are easy to process and assemble, and it is easy to connect and position them with other components; regular hexagonal and regular octagonal shapes can bring a unique appearance to the frame while ensuring structural stability; petal-shaped shapes may have certain advantages in terms of aesthetics and structural stability, providing users with more choices. At the same time, the appropriate cross-sectional shape can be selected according to the specific application scenario to improve the overall adaptability and aesthetics of the frame.

[0057] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0058] Any aspects of this utility model not described in detail are existing technology or common knowledge in the field.

Claims

1. A metal equestrian frame that is easy to disassemble and transport, comprising a base and a frame, characterized in that, The base includes a base plate (4), and the frame is formed by inserting pipes and connectors. All the pipes have the same cross-sectional shape, and all the connectors are provided with a plug-in part (567) that matches the cross-sectional shape of the pipe. The plug-in part can be accurately inserted into the pipe and can be firmly locked after being inserted into place. When disassembly is required, the plug-in part can be easily unlocked and pulled out from the pipe. The pipe includes at least two short risers (1), two long risers (2), and two horizontal pipes (3). Two opposite first circular holes (123) are opened at the same distance from the two ends of the short risers (1), long risers (2), and horizontal pipes (3). The pipe includes at least two straight sections (5), two tees (6), and two elbows (7). The straight section (5) has one plug-in part (567), and the elbow (7) has one plug-in part (567). The tee (6) has three T-shaped plugs (567). Each plug (567) is an open tube. Two opposing second round holes (5671) are opened at the same distance from the opening end of the plug (567) and the first round hole (123) from the end of the pipe. A V-shaped spring (5672) is inserted into the plug (567). The two ends of the V-shaped spring (5672) pass through a locking post (5673) and are bent so that the locking post (5673) is fixed to the V-shaped spring (5672) and restricts the inner end of the post (5673) from passing through the second round hole (5671) or the first round hole (123). The two locking posts (5673) are in clearance fit with the second round hole (5671) and the first round hole (123).

2. The metal frame for easy disassembly and transportation according to claim 1, characterized in that, The lower end of the straight section (5) is fixed to the first screw (51). The first screw (51) passes through the fourth round hole (41) in the middle of the base plate (4) from top to bottom and is screwed to the first nut (52). The plug part (567) of the straight section (5) is plugged into the lower end of the short riser (1). The plug part (567) below the tee (6) is plugged into the upper end of the short riser (1). The plug part (567) above the tee (6) is plugged into the lower end of the long riser (2). The plug part (567) in the middle of the tee (6) is plugged into one end of the horizontal pipe (3). The plug part (567) below the elbow (7) is plugged into the upper end of the long riser (2). The plug part (567) inside the elbow (7) is plugged into one end of the horizontal pipe (3).

3. The metal frame for easy disassembly and transportation according to claim 1, characterized in that, The length of the portion of the locking pin (5673) outside the V-shaped spring (5672) is greater than or equal to the sum of the thicknesses of the second circular hole (5671) and the first circular hole (123).

4. A metal frame for easy disassembly and transportation according to claim 1, characterized in that, The outer end face of the locking post (5673) is rounded.

5. A metal frame for easy disassembly and transportation according to claim 1, characterized in that, The portion of the V-shaped spring clip (5672) that passes through the locking post (5673) is narrower to prevent the locking post (5673) from shifting.

6. A metal frame for easy disassembly and transportation according to claim 1, characterized in that, A third round hole (42) is opened at each end near the bottom plate (4). The second screw (81) on the universal caster (8) passes through the third round hole (42) from bottom to top and is screwed with the second nut (82).

7. A metal frame for easy disassembly and transportation according to claim 6, characterized in that, The omnidirectional caster (8) is equipped with a braking device.

8. A metal frame for easy disassembly and transportation according to claim 7, characterized in that, The braking device is a foot-operated braking structure, which achieves braking and unlocking through foot operation.

9. A metal frame for easy disassembly and transportation according to claim 1, characterized in that, The cross-sectional shape of the pipe fitting is circular, square, regular hexagonal, regular octagonal, or petal-shaped.

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