Plug-in type temporary stand

Abstract

The invention provides a plug-in type temporary stand which comprises primary trusses, secondary trusses and a plurality of rows of supporting rod sets arranged at intervals, each supporting rod set comprises a plurality of vertical stand columns arranged at intervals in the linear direction, every two adjacent primary trusses are connected through a plug-in structure, and each plug-in structure comprises a vertical plug-in mounting rod arranged at one end of the corresponding primary truss. An inserting column is arranged at the upper end of the vertical inserting rod, a first sleeve is arranged at the lower end of the vertical inserting rod, and the upper end of the vertical stand column is inserted into the first sleeve; a second sleeve matched with the inserting column is arranged on the side, away from the first sleeve, of the lower end of the main truss. The secondary truss is installed between the two primary trusses through a hanging lug structure, the hanging lug structure comprises hanging lugs symmetrically fixed to the two sides of the upper end of the secondary truss, square pipe openings are formed in the upper portions of vertical square pipes of the primary trusses, and the hanging lugs are hooked at the square pipe openings; the plug-in type temporary stand overcomes the defects that an existing temporary stand is low in assembling efficiency, complex in structure and complex in machining technology.

Description

Technical Field

[0001] The present invention relates to the technical field of temporary stands, in particular to a plug-in temporary stand. Background Art

[0002] Fixed stands are a common spectator facility used in various sporting events, theatrical performances, and large-scale gatherings. However, these structures often suffer from high construction costs and low utilization rates. Consequently, temporary stands, which can be assembled and disassembled, have emerged and are gaining widespread adoption.

[0003] For example, patent number CN213539853U discloses a modular temporary grandstand that is easy to assemble and disassemble. Two adjacent main trusses are fixedly connected by a connecting plate. The connecting plate has multiple connecting holes spaced evenly along a straight line. Beam pins pass through the connecting holes to securely connect the corresponding overlapping members and the connecting portion. The main trusses include a triangular frame and multiple supporting members. A stepped frame is provided on the inclined surface of the triangular frame. Secondary trusses are installed between two adjacent rows of corresponding main trusses. The main trusses are provided with slots, and the secondary trusses are provided with plug-in columns that mate with the slots. Railings are fixed around the support frame, and the bottom of the railings are fixedly connected to the main trusses and secondary trusses.

[0004] The above structure has the following defects: 1) The two adjacent main trusses are connected by connecting plates, which is inconvenient to install and affects the assembly efficiency; 2) The main truss adopts a ladder frame set on a triangular frame, which has a complex structure, a large amount of steel, and a high material cost; 3) The secondary truss and the main truss are connected by plug-in columns. On the one hand, due to the small slots, it is difficult to insert the plug-in columns into the slots during installation, which is inconvenient to install; on the other hand, during processing, it is necessary to first weld a slot seat on the side end of the main truss, and then drill a slot on the slot seat. The secondary truss needs to be punched first and then welded with the plug-in column. The structure and process are complex, the accuracy requirements of the slots are also high, and the processing is difficult; 4) The outer frame of the railing structure needs to be bent before welding, and the processing process is complicated. Summary of the Invention

[0005] (1) Technical issues to be resolved

[0006] In view of this, the present invention provides a plug-in temporary stand, which overcomes the defects of existing temporary stands such as low assembly efficiency, complex main truss structure and high material cost, and complex processing technology of main trusses, secondary trusses and railings.

[0007] (2) Technical solution

[0008] In order to solve the technical problem, the present invention provides a plug-in temporary stand, comprising a main truss, a secondary truss and a plurality of rows of spaced-apart support rod groups, the support rod group comprising a plurality of vertical columns spaced-apart along a straight line direction, and two adjacent main trusses are connected by a plug-in structure, the plug-in structure comprising a vertical plug-in rod arranged at one end of the main truss, the upper end of the vertical plug-in rod being provided with a plug-in column, the lower end of the vertical plug-in rod being provided with a first sleeve, the upper end of the vertical column being plugged into the first sleeve; the lower end of the main truss is provided with a second sleeve adapted to the plug-in column on the side away from the first sleeve; the secondary truss is installed between the two main trusses through a hanging ear structure, the hanging ear structure comprising hanging ears symmetrically fixed on both sides of the upper end of the secondary truss, the vertical square tube of the main truss having a square tube opening above, the hanging ear hook being hung at the square tube opening.

[0009] In some embodiments, the main truss includes a bottom cross bar and a plurality of vertical square tubes fixed on the bottom cross bar and with successively increasing heights. The vertical plug-in rod is passed through one end of the bottom cross bar, and the second sleeve is fixed to the other end of the bottom cross bar. A transverse support rod is fixed between two adjacent vertical square tubes, and the plurality of transverse support rods are arranged in a stepped manner.

[0010] In some embodiments, an oblique support rod is installed between two adjacent vertical square tubes, and a transverse support rod and an oblique support rod are installed between the vertical plug-in rod and the adjacent vertical square tube; and / or, a vertical support rod is installed between the transverse support rod and the bottom cross bar.

[0011] In some embodiments, the secondary truss includes a rectangular frame, and angle steel sheets are fixed on both sides of the upper end of the rectangular frame to form the hanging ears, and the hanging ears are L-shaped and bent downward; an intermediate support rod is provided in the middle of the rectangular frame, and angle steel rods are symmetrically arranged on both sides of the intermediate support rod, and the intermediate support rod and the angle steel rods are both located inside the rectangular frame.

[0012] In some embodiments, the main truss is in a stepped shape, and a fence is fixed on the stepped platform of the main truss; the fence includes a rectangular outer frame formed by splicing multiple square tubes, and connecting rods are symmetrically arranged at the bottom of the rectangular outer frame, and the connecting rods are connected to the main truss through multiple pins; the vertical plug-in rods and the vertical square tubes are provided with connecting seats for connecting to the connecting rods.

[0013] In some embodiments, a plurality of circular tubes are installed at intervals along a straight line in the rectangular outer frame, and the rectangular outer frame is provided with insertion holes for the circular tubes to be inserted; decorative cover plates are installed on both sides of the upper end of the rectangular outer frame.

[0014] In some embodiments, a first support plate is provided on one side of the upper end of the secondary truss, and a second support plate is provided on the other side of the lower end thereof, and the first support plate and the second support plate are used to support the table top; a U-shaped clamp is fixed on the stepped platform of the main truss, and the U-shaped clamp is used to clamp the table top.

[0015] In some embodiments, a horizontal pull rod and / or an oblique pull rod are installed between two adjacent vertical columns and between the vertical column and the vertical plug-in rod, and a chuck is installed on the vertical column and the vertical plug-in rod. The ends of the horizontal pull rod and the oblique pull rod are respectively hinged with a hinge block, and the hinge block is installed on the corresponding chuck through a wedge pin.

[0016] In some embodiments, the vertical column is a cylindrical steel pipe, and an adjustment foot for adjusting the height is installed at the lower end of the vertical column; the vertical column is inserted into the first sleeve and fixed by a first pin; the plug-in column is inserted into the corresponding second sleeve and fixed by a second pin.

[0017] In some embodiments, an end truss is further included, wherein a boss is provided on the upper side of one end of the end truss, a seat is fixed to one end of the boss, and a backrail is installed at the other end of the boss.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects:

[0020] 1) Adjacent main trusses are connected through a plug-in structure. The plug-in column at one end of the vertical plug-in rod is plugged into the second sleeve of the other main truss, and the vertical column is plugged into the first sleeve. Compared with the traditional connection method using connecting plates and beam pins, no additional components are required for connection. During installation, it can be directly plugged in and fixed with pins, which is simpler to operate and greatly improves assembly efficiency. The main truss uses a bottom cross bar and multiple vertical square tubes with increasing heights, connected into a stepped shape by horizontal support rods. Compared with the traditional triangular frame with a stepped frame structure, this simplifies the inclined beam structure of the triangular frame, optimizes the structure while meeting the usage specifications, reduces the use of steel, and reduces material costs.

[0021] 2) The secondary truss is installed between the two main trusses through a hanging ear structure. The hanging ear is L-shaped and hooked on the square tube opening above the vertical square tube of the main truss. This avoids the problem of inserting the plug-in column into the narrow slot, making the installation of the secondary truss more convenient and further improving the assembly speed. The main truss does not need to weld the slot seat and then drill the slot, and the secondary truss does not need to punch and weld the plug-in column, which reduces the processing difficulty and the requirements for slot accuracy. The overall processing technology is optimized, saving processing costs and time.

[0022] 3) The connecting rods arranged symmetrically at the bottom of the rectangular outer frame of the fence are connected to the main truss through multiple pins. The pin connection method is simple to operate and is conducive to improving the assembly efficiency of the temporary stand module; the fence uses square tubes to weld to form a rectangular outer frame. Compared with the complex process of traditional railing outer frames that require bending and then welding, the square tube welding process is simpler and more direct, without the need for a bending process, and punching on the square tube is also simpler and more convenient. The process is simple and the difficulty is low, which improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic structural diagram of a plug-in temporary stand according to the present invention;

[0025] Figure 2 This is a schematic structural diagram of the connection between two adjacent main trusses in a plug-in temporary stand of the present invention;

[0026] Figure 3 This is a schematic structural diagram of the connection between the main truss and the vertical columns in a plug-in temporary stand of the present invention;

[0027] Figure 4 It is a three-dimensional diagram of the connection between the main truss, secondary truss, vertical columns and fences in a plug-in temporary stand of the present invention;

[0028] Figure 5 This is an exploded view of the main truss, secondary truss, vertical columns and fences in a plug-in temporary stand of the present invention;

[0029] Figure 6 This is a three-dimensional diagram of a hanging ear structure in a plug-in temporary stand of the present invention;

[0030] Figure 7 It is a three-dimensional diagram of the main truss of a plug-in temporary stand of the present invention;

[0031] Figure 8 It is a three-dimensional diagram of a secondary truss in a plug-in temporary stand according to the present invention;

[0032] Figure 9 It is a three-dimensional diagram of the connection between the main truss and the fence in a plug-in temporary stand of the present invention;

[0033] Figure 10 It is a three-dimensional diagram of a fence in a plug-in temporary stand of the present invention;

[0034] Figure 11 This is a schematic structural diagram of the connection between the main truss, secondary truss and table top in a plug-in temporary stand of the present invention;

[0035] Figure 12 It is a three-dimensional diagram of the connection between the chuck, the horizontal pull rod and the oblique pull rod in a plug-in temporary stand of the present invention;

[0036] Figure 13 This is a structural diagram of a plug-in temporary stand end truss of the present invention;

[0037] The names of the components corresponding to the reference numerals in the figure are: 1. main truss; 11. vertical plug-in rod; 111. plug-in column; 112. first sleeve; 12. second sleeve; 13. vertical square tube; 131. square tube mouth; 14. bottom cross bar; 15. horizontal support rod; 16. oblique support rod; 17. vertical support rod; 18. connecting seat; 19. U shaped clip; 2. Secondary truss; 21. Hanging ear; 22. Rectangular frame; 23. Intermediate support rod; 24. Angle steel rod; 25. First support plate; 26. Second support plate; 3. Vertical column; 31. Horizontal pull rod; 32. Diagonal pull rod; 33. Chuck; 34. Hinge block; 4. Fence; 41. Rectangular outer frame; 42. Connecting rod; 43. Round tube; 44. Jack; 45. Decorative cover; 5. Tabletop; 6. Adjustable foot; 7. End truss; 71. Boss. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0039] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0040] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0041] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0042] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0043] Combine Figures 1-13 As shown, the present invention provides a plug-in temporary stand, including multiple main trusses 1, multiple secondary trusses 2 and multiple rows of spaced support rod groups, the support rod groups including multiple vertical columns 3 spaced apart in a straight direction.

[0044] See Figures 1 to 3Two adjacent main trusses 1 are connected via a plug-in structure, which includes a vertical plug-in rod 11 provided at one end of the main truss 1. The upper end of the vertical plug-in rod 11 is provided with a plug-in column 111, and the lower end of the vertical plug-in rod 11 is provided with a first sleeve 112. The upper end of the vertical column 3 is plugged into the first sleeve 112, and the upper end of the vertical column 3 is provided with a plug-in column that adapts to the first sleeve 112. The lower end of the main truss 1 is provided with a second sleeve 12 that adapts to the plug-in column 111 on the side away from the first sleeve 112. In two adjacent main trusses 1, the plug-in column 111 of one main truss 1 can be plugged into the second sleeve 12 of the other main truss 1. To ensure the stability of the connection, the vertical column 3 is inserted into the first sleeve 112 and then fixed with a first pin. The plug-in column 111 is inserted into the corresponding second sleeve 12 and then fixed with a second pin. This prevents the plug-in column and sleeve from separating, and ensures a stable and reliable connection. In this structure, adjacent main trusses are connected through a plug-in structure. The plug-in column at one end of the vertical plug-in rod plugs into the second sleeve of the other main truss, and the vertical column plugs into the first sleeve. Compared with the traditional connection method using connecting plates and beam pins, no additional components are required for connection. During installation, it can be directly plugged in and fixed with pins, which is simpler to operate and greatly improves assembly efficiency.

[0045] See Figures 4 to 6 The secondary truss 2 is installed between the two main trusses 1 through a hanging ear structure. The hanging ear structure includes hanging ears 21 symmetrically fixed on both sides of the upper end of the secondary truss 2. The vertical square tube 13 of the main truss 1 has a square tube opening 131 above, and the hanging ears 21 are hooked at the square tube opening 131. In this structure, the secondary truss is installed between the two main trusses through the hanging ear structure. The hanging ear is L-shaped and hooked at the square tube opening above the vertical square tube of the main truss, avoiding the problem of inserting the plug-in column into a narrow slot, making the installation of the secondary truss more convenient and further improving the assembly speed. By connecting the square tube opening 131 of the main truss's own components and the hanging ears 21, there is no need to weld the slot seat on the main truss first and then drill the slot, and there is no need to drill holes and then weld the plug-in column on the secondary truss, which reduces the processing difficulty and the requirements for slot accuracy. The overall processing technology is optimized, saving processing cost and time.

[0046] In some embodiments, as Figure 7As shown, the main truss 1 includes a bottom crossbar 14 and a plurality of vertical square tubes 13 fixed to the bottom crossbar 14 and of increasing height. A vertical insertion rod 11 is inserted through one end of the bottom crossbar 14, and a second sleeve 12 is fixed to the other end of the bottom crossbar 14. A transverse support rod 15 is fixed between two adjacent vertical square tubes 13, and multiple transverse support rods 15 are arranged in a stepped manner. A diagonal support rod 16 is installed between two adjacent vertical square tubes 13, and a transverse support rod 15 and a diagonal support rod 16 are installed between the vertical insertion rod 11 and the adjacent vertical square tube 13. And / or, a vertical support rod 17 is installed between the transverse support rod 15 and the bottom crossbar 14. In this structure, the main truss adopts a bottom cross bar and multiple vertical square tubes with increasing heights, which are connected into a stepped shape through horizontal support rods. Compared with the traditional triangular frame with a stepped frame structure, the inclined beam structure of the triangular frame is simplified, the structure is optimized while meeting the usage specifications, the use of steel is reduced, and the material cost is reduced.

[0047] In this embodiment, there are three vertical square tubes and three transverse support rods. An oblique support rod is installed between the second vertical square tube (counted from right to left) and the third vertical square tube, an oblique support rod is installed between the third vertical square tube and the vertical plug-in rod, and a vertical support rod is installed between the first transverse support rod (the lowest in height) and the bottom transverse rod. Through the cooperation of the oblique support rods and the transverse support rods, the main truss can form a stable support system, thereby enhancing the overall bearing capacity of the temporary stand.

[0048] In some embodiments, as Figure 8 As shown, the secondary truss 2 includes a rectangular frame 22 formed by welding multiple square tubes. Angle steel sheets are fixed to each side of the upper end of the rectangular frame 22 to form hanging ears 21. The hanging ears 21 are L-shaped and bent downward. They are formed by welding angle steel sheets, which is convenient for processing. An intermediate support rod 23 is provided in the middle of the rectangular frame 22. Angle steel rods 24 are symmetrically arranged on both sides of the intermediate support rod 23. Both the intermediate support rod 23 and the angle steel rods 24 are located inside the rectangular frame 22. The cooperation between the intermediate support rod 23 and the angle steel rods 24 effectively enhances the overall strength and stability of the secondary truss, ensuring that it is not easily deformed or damaged when bearing the weight of the audience or other external forces.

[0049] In some embodiments, as Figure 9 and Figure 10As shown, the main truss 1 is stepped, with a fence 4 fixed to the stepped platform. The fence 4 comprises a rectangular outer frame 41 formed by splicing multiple square tubes. Connecting rods 42 are symmetrically arranged at the bottom of the rectangular outer frame 41 and connected to the main truss 1 via multiple pins. Connecting sockets 18 for connecting with the connecting rods 42 are provided on the vertical insertion rods 11 and vertical square tubes 13. Multiple circular tubes 43 are installed at intervals along a straight line within the rectangular outer frame 41. Rectangular outer frame 41 is provided with insertion holes 44 for the circular tubes 43 to be inserted into. Decorative cover plates 45 are installed on both sides of the upper end of the rectangular outer frame 41. In this structure, the connecting rods symmetrically arranged at the bottom of the rectangular outer frame of the fence are connected to the main truss through multiple pins. The pin connection method is simple to operate and is conducive to improving the assembly efficiency of the temporary stand module. The fence uses square tubes to weld to form a rectangular outer frame. Compared with the traditional railing outer frame using a complex process of bending and then welding round tubes, the square tube welding process is simpler and more direct, without the need for bending process, the process is simple, and the processing difficulty is low.

[0050] In this embodiment, three rails are mounted on the main truss 1, each connecting rod connected to the main truss via two pins. Because the first transverse support rod (counted from right to left) is spaced relatively close to the bottom crossbar, the connecting rod is connected to both the bottom crossbar and the transverse support rod. The other two transverse support rods, spaced further apart from the bottom crossbar, require additional connecting brackets, which are then connected to the transverse support rods and the brackets.

[0051] In some embodiments, as Figure 4 、 Figure 7 、 Figure 8 and Figure 11 As shown, a first support plate 25 is provided on one side of the upper end of the secondary truss 2, and a second support plate 26 is provided on the other side of the lower end. These first and second support plates 25, 26 are used to support the tabletop 5. When the tabletop is installed, it is supported between the main truss, the first support plate 25 of the current secondary truss, and the second support plate of the subsequent secondary truss. A U-shaped clip 19 is fixed to the stepped platform of the main truss 1. The U-shaped clip 19 is used to clip the tabletop 5. The U-shaped clip 19 is used to clip the frame of the limited tabletop to prevent displacement and ensure structural stability.

[0052] In some embodiments, as Figure 1 、 Figure 4 and Figure 12As shown, the vertical columns 3 are cylindrical steel tubes, and the lower ends of the vertical columns 3 are installed with adjusting feet 6 for adjusting the height. Horizontal pull rods 31 and / or diagonal pull rods 32 are installed between adjacent vertical columns 3 and between the vertical columns 3 and the vertical plug-in rods 11. Chucks 33 are installed on the vertical columns 3 and the vertical plug-in rods 11. The ends of the horizontal pull rods 31 and the diagonal pull rods 32 are respectively hinged with hinge blocks 34, which are installed on the corresponding chucks 33 via wedge pins. This structure, in which adjacent vertical columns and the vertical plug-in rods 11 are connected via horizontal pull rods and / or diagonal pull rods, and the hinge blocks are installed via chucks and wedge pins, ensures both the convenience of assembly and disassembly and the stability of the entire temporary stand structure.

[0053] In some embodiments, as Figure 1 、 Figure 4 and Figure 13 As shown, the structure of the end truss 7 is similar to that of the main truss 1. The end truss 7 comprises a vertical insertion rod 11, a first sleeve 112, a second sleeve 12, a vertical square tube 13, a bottom crossbar 14, and a transverse support rod 15. Because the end truss 7 is located at the end, no insertion column is required at the upper end of the vertical insertion rod 11. Furthermore, a boss 71 is provided on the upper side of one end of the end truss 7. A seat is fixed to one end of the boss 71 (the dotted ellipse in the figure), and a backrail is mounted to the other end (the dotted rectangular line in the figure). In this structure, the end truss 7 has bosses 71. A secondary truss can be installed between two adjacent rows of corresponding bosses 71. The backrail is mounted on the secondary truss, facilitating installation and ensuring safety. Furthermore, the presence of bosses 71 allows for an additional row of seats, accommodating more spectators and providing a better experience.

[0054] In this specification, the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments described later, the description is relatively simple, and the relevant parts can be referred to the partial description of the previous embodiments.

[0055] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A plug-in temporary stand, comprising a main truss (1), a secondary truss (2), and a plurality of rows of spaced-apart support rods, wherein the support rods comprise a plurality of vertical columns (3) spaced-apart along a straight line, characterized in that: Two adjacent main trusses (1) are connected via a plug-in structure, wherein the plug-in structure comprises a vertical plug-in rod (11) arranged at one end of the main truss (1), wherein the upper end of the vertical plug-in rod (11) is provided with a plug-in column (111), and the lower end thereof is provided with a first sleeve (112), and the upper end of the vertical column (3) is plugged into the first sleeve (112); the lower end of the main truss (1) is provided with a second sleeve (12) adapted to the plug-in column (111) on a side away from the first sleeve (112); the secondary truss (2) is installed between the two main trusses (1) via a hanging ear structure, wherein the hanging ear structure comprises hanging ears (21) symmetrically fixed on both sides of the upper end of the secondary truss (2); a square tube opening (131) is provided above the vertical square tube (13) of the main truss (1), and the hanging ear (21) is hooked at the square tube opening (131).

2. The plug-in temporary stand according to claim 1, characterized in that: The main truss (1) comprises a bottom cross bar (14) and a plurality of vertical square tubes (13) fixed on the bottom cross bar (14) and having successively increasing heights; the vertical insertion rod (11) is passed through one end of the bottom cross bar (14); and the second sleeve (12) is fixed to the other end of the bottom cross bar (14); a transverse support rod (15) is fixed between two adjacent vertical square tubes (13); and the plurality of transverse support rods (15) are arranged in a stepped manner.

3. The plug-in temporary stand according to claim 2, characterized in that: An oblique support rod (16) is installed between two adjacent vertical square tubes (13); a transverse support rod (15) and an oblique support rod (16) are installed between the vertical insertion rod (11) and the adjacent vertical square tube (13); and / or a vertical support rod (17) is installed between the transverse support rod (15) and the bottom cross bar (14).

4. The plug-in temporary stand according to claim 1, characterized in that: The secondary truss (2) comprises a rectangular frame (22), angle steel sheets are fixed on both sides of the upper end of the rectangular frame (22) to form the hanging ears (21), and the hanging ears (21) are L-shaped and bent downward; an intermediate support rod (23) is provided in the middle of the rectangular frame (22), angle steel rods (24) are symmetrically arranged on both sides of the intermediate support rod (23), and the intermediate support rod (23) and the angle steel rods (24) are both located inside the rectangular frame (22).

5. The plug-in temporary stand according to claim 1, characterized in that: The main truss (1) is in a stepped shape, and a fence (4) is fixed on the stepped platform of the main truss (1); the fence (4) includes a rectangular outer frame (41) formed by splicing a plurality of square tubes, and connecting rods (42) are symmetrically arranged at the bottom of the rectangular outer frame (41), and the connecting rods (42) are connected to the main truss (1) through a plurality of pins; and a connecting seat (18) for connecting to the connecting rod (42) is provided on the vertical plug-in rod (11) and the vertical square tube (13).

6. The plug-in temporary stand according to claim 5, characterized in that: A plurality of circular tubes (43) are installed at intervals along a straight line in the rectangular outer frame (41), and insertion holes (44) for inserting the circular tubes (43) are provided on the rectangular outer frame (41); decorative cover plates (45) are installed on both sides of the upper end of the rectangular outer frame (41).

7. The plug-in temporary stand according to claim 1, characterized in that: A first support plate (25) is provided on one side of the upper end of the secondary truss (2), and a second support plate (26) is provided on the other side of the lower end thereof, the first support plate (25) and the second support plate (26) being used to support the table top (5); a U-shaped clamping piece (19) is fixed on the stepped platform of the main truss (1), and the U-shaped clamping piece (19) is used to clamp the table top (5).

8. The plug-in temporary stand according to claim 1, characterized in that: A horizontal pull rod (31) and / or an oblique pull rod (32) are installed between two adjacent vertical columns (3) and between the vertical columns (3) and the vertical plug-in rod (11). A chuck (33) is installed on the vertical column (3) and the vertical plug-in rod (11). The ends of the horizontal pull rod (31) and the oblique pull rod (32) are respectively hinged with a hinge block (34). The hinge block (34) is installed on the corresponding chuck (33) through a wedge pin.

9. The plug-in temporary stand according to claim 1, characterized in that: The vertical column (3) is a cylindrical steel pipe, and an adjusting foot (6) for adjusting the height is installed at the lower end of the vertical column (3); the vertical column (3) is inserted into the first sleeve (112) and fixed by a first pin; the plug-in column (111) is inserted into the corresponding second sleeve (12) and fixed by a second pin.

10. The plug-in temporary stand according to claim 1, characterized in that: It also includes an end truss (7), wherein a boss (71) is provided on the upper side of one end of the end truss (7), a seat is fixed to one end of the boss (71), and a backrest is installed at the other end thereof.

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