Height-adjustable cantilever structure assembly support device and assembly method

Abstract

The application provides a highly adjustable cantilever structure assembly support device and an assembly method, and belongs to the technical field of cantilever concrete structure construction; a plurality of upper chords and a plurality of lower chords are included, a plurality of combined telescopic rods are mounted between each group of the upper chords and the lower chords, and adjacent upper chords and adjacent lower chords are fixedly connected through splicing sleeves; the combined telescopic rod comprises a fixed sliding rod, a sliding rod sleeve, a threaded sleeve and a threaded connecting rod, and a plurality of limiting grooves are formed in the sliding rod sleeve. The application replaces the traditional cantilever H-shaped steel, has higher bearing capacity and anti-deformation capacity, can adjust the support span, copes with different construction site conditions, can adjust the support truss height, is suitable for large-weight cantilever structures, has wide universality, the support device can be split according to the component parts, the purpose of convenient transportation is achieved, the construction efficiency and safety are improved, and good economy and practicability are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cantilever concrete structure construction, in particular to a height-adjustable cantilever structure assembly support device and assembly method. BACKGROUND

[0002] In actual construction, the support system of common cantilever concrete structure is divided into landing support and cantilever support according to different force transmission modes. The landing support platform has the advantages of clear force transmission characteristics and simple design. However, for higher cantilever layers, the landing support scaffold formwork support system has the problems of large amount of steel pipe usage, small self-rigidity of the frame, poor stability of the frame, complicated installation and removal, high cost of the cantilever formwork structure, long construction time, small cantilever span, and ineffective guarantee of construction safety. In the cantilever support system, the load of the cantilever concrete structure is transmitted to the cantilever beam through the support frame, and then transmitted to the main structure by the fixing bolt. Compared with the landing support platform structure, there are great differences. The landing support platform only needs to consider the bearing capacity of the bottom force layer of the vertical rod. The bottom of the vertical rod of the pure cantilever support platform is supported on the cantilever beam. The load will cause deflection deformation of the cantilever beam. At the same time, the end of the pure cantilever support platform is not constrained, so the strength and rigidity of the cantilever beam are required to be higher, and the load bearing capacity of the support platform is smaller.

[0003] Although the existing cantilever support system solves the support problem of some cantilever concrete structure construction, the H-shaped steel of the pure cantilever support has small rigidity and weak bearing capacity, and the use scene is limited. When the height of the cantilever structure increases and the cantilever span (cantilever load) is large, the span and the height of the support truss cannot be adjusted, and it is difficult to adapt to the construction of cantilever structures with various spans and various conditions. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a height-adjustable cantilever structure assembly support device and assembly method to solve the problem that although the existing cantilever support system solves the support problem of some cantilever concrete structure construction, the H-shaped steel of the pure cantilever support has small rigidity and weak bearing capacity, and the use scene is limited. When the height of the cantilever structure increases and the cantilever span (cantilever load) is large, the span and the height of the support truss cannot be adjusted, and it is difficult to adapt to the construction of cantilever structures with various spans and various conditions.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] A height-adjustable cantilever structure assembly support device, comprising a plurality of upper chords and a plurality of lower chords, a plurality of combined telescopic rods are installed between each group of upper chords and lower chords, and adjacent upper chords and adjacent lower chords are fixedly connected through splicing sleeves.

[0007] The combined telescopic rod comprises a fixed slide rod, a slide rod sleeve, a threaded sleeve and a threaded connecting rod, a plurality of limiting grooves are formed in the slide rod sleeve, one end of the fixed slide rod is slidably connected in the interior of the slide rod sleeve and is fixedly connected with a limiting lug corresponding to the limiting grooves, an elastic limiting assembly is arranged in the limiting grooves, the elastic limiting assembly is used for limiting the limiting lug in the limiting grooves, the other end of the fixed slide rod is hingedly fixed with the upper chord rod through a first bolt, the threaded connecting rod is hingedly fixed with the lower chord rod through a second bolt, and the threaded sleeve is used for moving the slide rod sleeve and the threaded connecting rod close to or away from each other.

[0008] Preferably, the upper chord rod and the lower chord rod each comprise a steel rod body, two T-shaped sliding grooves are formed in the steel rod body near one side of the combined telescopic rod, a plurality of first mounting holes are formed in the middle of the front surface of the steel rod body, two second mounting holes are formed in the left and right sides of the front surface of the steel rod body, and the first mounting holes and the second mounting holes penetrate through the back surface of the steel rod body.

[0009] Preferably, a plurality of the combined telescopic rods are staggered and arranged in front of and behind the two T-shaped sliding grooves.

[0010] Preferably, mounting grooves matched with the steel rod body are formed in the left and right sides of the splicing sleeve, third mounting holes corresponding to the second mounting holes are formed in the left and right sides of the front surface of the splicing sleeve, a third bolt is arranged in the third mounting hole, and the third bolt penetrates through the third mounting hole and the second mounting hole and is located on the back surface of the splicing sleeve.

[0011] Preferably, the limiting groove comprises a vertical hole and a clamping hole, a sliding groove is formed in the inner wall of the slide rod sleeve, the limiting lug is slidably connected in the interior of the sliding groove, and the vertical hole is in communication with the sliding groove.

[0012] Preferably, the elastic limiting assembly comprises a movable clamping tongue slidably connected in the vertical hole, an arc-shaped edge is arranged at one end of the movable clamping tongue close to the clamping hole, a positioning hole is formed at one end of the movable clamping tongue away from the clamping hole, a spring is arranged between the positioning hole and the inner wall of the vertical hole, the movable clamping tongue is in L-shaped structure and a push piece is arranged on the outer surface of the movable clamping tongue.

[0013] Preferably, a limiting sleeve is sleeved on the top end of the outer surface of the slide rod sleeve, the top end of the limiting sleeve is fixedly connected with the top end of the slide rod sleeve through a screw, an operation hole corresponding to the push piece is formed in the outer surface of the limiting sleeve, and the push piece is fixedly connected with the movable clamping tongue through a screw.

[0014] Preferably, the fixed slide rod is fixedly connected with a first mounting ring at one end away from the slide rod sleeve, the first mounting ring is slidingly connected in a T-shaped slide groove of the upper chord, the first bolt penetrates through the first mounting ring and a first mounting hole on the upper chord, the threaded connecting rod comprises a second screw rod and a second mounting ring fixedly connected, the second mounting ring is slidingly connected in a T-shaped slide groove of the lower chord, and the second bolt penetrates through the second mounting ring and a first mounting hole of the lower chord.

[0015] Preferably, left-handed thread holes and right-handed thread holes are formed in the upper and lower sides of the threaded sleeve respectively, the slide rod sleeve is fixedly connected with a first screw rod at one end away from the fixed slide rod, the first screw rod and the second screw rod are threadedly connected with the left-handed thread holes and the right-handed thread holes respectively, and a hexagonal body is fixedly connected to the outer surface of the threaded sleeve.

[0016] A method for assembling a height-adjustable cantilever structure assembly support device comprises the following steps:

[0017] Step one, according to the actual engineering needs, determine the actual required support device height and span, adjust the length of the combined telescopic rod;

[0018] Step two, insert the first mounting ring at the top end of the combined telescopic rod into the T-shaped slide groove on the rear side of the upper chord, and fix it with the first bolt, then fix the second mounting ring at the bottom end of the combined telescopic rod in the T-shaped slide groove on the front side of the lower chord with the second bolt, thereby connecting the upper and lower ends of the combined telescopic rod to the upper chord and the lower chord respectively and fixing them together.

[0019] Step three, by reserving a second mounting hole at the end of the steel rod body, insert the two steel rod bodies into the mounting grooves at the two ends of the splicing sleeve and fix them with the third bolt, and similarly, multiple standard steel rod bodies can be spliced to form a support truss, thereby realizing temporary adaptive adjustment of the cantilever span and adapting to a larger span.

[0020] Step four, remove the three first bolts at the fixed position of the upper chord with a wrench, so that the upper chord and the lower chord are in contact and completely folded, which is convenient for transportation or stacking through simple operation.

[0021] Compared with the prior art, the present application has at least the following beneficial effects:

[0022] In the above scheme, it is easy to disassemble, after the construction is completed, the bolts can be removed through simple operation, so that the entire support system is removed, the construction period and cost are reduced, and the support system replaces the traditional cantilever H-shaped steel, has higher bearing capacity and anti-deformation ability, and can adjust the height of the support truss to increase the stiffness and bearing capacity, and adapt to a larger span.

[0023] In the above scheme, according to the actual situation, through pre-computation, the accessories can be selected in advance, the truss part is pre-installed and then hoisted, and then connected with the embedded part, so that the support of the cantilever structure can be quickly completed, the construction preparation time is shortened, the efficiency is improved, and the type steel part is good in transportation and can be connected through bolts without on-site welding, which is more environmentally friendly, safe and convenient for on-site construction.

[0024] In the above scheme, the accessories can be modularized, and according to the actual cantilever length, a corresponding number of materials can be selected in advance and recycled, so as to reduce material loss, and the assembly of the standard section truss support can adapt to cantilever structures of various spans, the height of the support truss can be adjusted, the cantilever structure of large weight can be adapted, the universality is wide, and the support device can be split according to the component parts to achieve the purpose of convenient transportation. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable a person skilled in the relevant art to implement and use the present disclosure.

[0026] Figure 1 The schematic view of the installation of the support device for the height-adjustable cantilever structure assembled on the structure of the main building;

[0027] Figure 2 The schematic view of the splicing structure of the top chord and the bottom chord of the support device for the height-adjustable cantilever structure assembled;

[0028] Figure 3 The schematic view of the connection structure of the top chord and the bottom chord of the support device for the height-adjustable cantilever structure assembled;

[0029] Figure 4 The schematic view of the sliding structure of the combined telescopic rod of the support device for the height-adjustable cantilever structure assembled;

[0030] Figure 5 The schematic view of the half-section structure of the combined telescopic rod of the support device for the height-adjustable cantilever structure assembled along the sliding groove;

[0031] Figure 6 The schematic view of the Figure 5 The enlarged structure schematic view of position A in the above;

[0032] Figure 7 The schematic view of the structure in which the limiting lug is located in the clamping hole of the support device for the height-adjustable cantilever structure assembled;

[0033] Figure 8 The schematic view of the structure in which the limiting lug slides along the sliding groove of the support device for the height-adjustable cantilever structure assembled;

[0034] Figure 9 Schematic diagram of the three-dimensional structure of the combined telescopic rod of the support device assembled for the height-adjustable cantilever structure;

[0035] Figure 10 Schematic diagram of the three-dimensional structure of the combined telescopic rod of the support device assembled for the height-adjustable cantilever structure; Figure 9 Schematic diagram of the three-dimensional structure of the combined telescopic rod of the support device assembled for the height-adjustable cantilever structure;

[0036] Figure 11 Schematic diagram of the three-dimensional structure of the combined telescopic rod of the support device assembled for the height-adjustable cantilever structure;

[0037] Figure 12 Schematic diagram of the three-dimensional structure of the combined telescopic rod of the support device assembled for the height-adjustable cantilever structure;

[0038] Figure 13 Schematic diagram of the three-dimensional structure of the combined telescopic rod of the support device assembled for the height-adjustable cantilever structure;

[0039] Figure 14 Schematic diagram of the three-dimensional structure of the combined telescopic rod of the support device assembled for the height-adjustable cantilever structure;

[0040] Figure 15 Schematic diagram of the three-dimensional structure of the combined telescopic rod of the support device assembled for the height-adjustable cantilever structure.

[0041] [Reference signs]

[0042] 1, upper chord; 2, lower chord; 3, combined telescopic rod; 4, splicing sleeve; 5, fixed sliding rod; 6, sliding rod sleeve; 7, threaded sleeve; 8, threaded connecting rod; 9, limiting groove; 10, limiting lug; 11, elastic limiting assembly; 12, first bolt; 13, second bolt; 101, steel rod body; 102, T-shaped sliding groove; 103, first mounting hole; 104, second mounting hole; 401, mounting groove; 402, third mounting hole; 403, third bolt; 601, limiting sleeve; 602, screw; 603, operation hole; 901, vertical hole; 902, clamping hole; 903, sliding groove; 1101, movable clamping tongue; 1102, arc-shaped edge; 1103, positioning hole; 1104, spring; 1105, push piece; 14, first mounting ring; 15, second screw rod; 16, second mounting ring; 17, first screw rod; 18, hexagonal body.

[0043] As shown in the drawings, for the purpose of clearly implementing the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the present application in the specific structures, devices and environments, and the devices and environments can be adjusted or modified by those skilled in the art according to specific needs, and the adjustment or modification still includes in the scope of the appended claims. DETAILED DESCRIPTION

[0044] The highly adjustable cantilever structure assembly support device and the assembly method provided by the present application will be described in detail below in combination with the drawings and specific embodiments. It should be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and other alternative ways can also be used by those skilled in the art to implement some known technologies; and the drawings are only used to more specifically describe the embodiments, and are not intended to specifically limit the present application.

[0045] It should be noted that in the specification, "one embodiment", "an embodiment", "exemplary embodiment", "some embodiments" and the like indicate that the described embodiment can include a specific feature, structure or characteristic, but not necessarily every embodiment includes the specific feature, structure or characteristic. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it should be within the knowledge of those skilled in the related art to realize this feature, structure or characteristic in combination with other embodiments (whether or not explicitly described).

[0046] Generally, the terms can be understood at least in part from the context in which they are used. For example, depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular or can be used to describe combinations of features, structures, or characteristics, in the plural, without necessarily dictating whether any such feature, structure, or characteristic is required, desired, or even needed. In addition, the term "based on" can be understood as not necessarily of restricting a set of factors to express an embodiment, but instead can allow for existence of additional factors not expressly listed, again depending on the context.

[0047] It can be understood that the meanings of "on", "over", and "above" in the present disclosure should be interpreted in the broadest way, so that "on" not only means "directly on" something, but also includes the meaning of "on" something with intervening features or layers therebetween, and "over" or "above" not only means the meaning of "over" or "above" something, but also can include the meaning of "over" or "above" something without intervening features or layers therebetween.

[0048] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0049] like Figures 1-15 As shown, an embodiment of the present invention provides a height-adjustable cantilever structure assembly support device, including multiple upper chords 1 and multiple lower chords 2. Multiple combined telescopic rods 3 are installed between each group of upper chords 1 and lower chords 2. Adjacent upper chords 1 and adjacent lower chords 2 are fixedly connected by splicing sleeves 4.

[0050] The combined telescopic rod 3 includes a fixed slide rod 5, a slide rod sleeve 6, a threaded sleeve 7, and a threaded connecting rod 8. The slide rod sleeve 6 has multiple limiting grooves 9, with three limiting grooves 9 arranged along the length of the slide rod sleeve 6. One end of the fixed slide rod 5 is slidably connected to the inside of the slide rod sleeve 6 and is fixedly connected to a limiting ear 10 corresponding to the limiting groove 9. An elastic limiting component 11 is provided in the limiting groove 9, which is used to restrict the limiting ear 10 within the limiting groove 9.

[0051] The other end of the fixed slide rod 5 is hinged to the upper chord rod 1 by the first bolt 12, and the threaded connecting rod 8 is hinged to the lower chord rod 2 by the second bolt 13. The threaded sleeve 7 is used to bring the slide rod sleeve 6 and the threaded connecting rod 8 closer or further apart, thereby achieving the purpose of fine-tuning the length of the combined telescopic rod.

[0052] like Figures 1-4 As shown, in this embodiment, both the upper chord 1 and the lower chord 2 include a steel rod body 101. Two T-shaped grooves 102 are provided on the side of the steel rod body 101 near the combined telescopic rod 3. Multiple first mounting holes 103 are provided in the center of the front of the steel rod body 101. Two second mounting holes 104 are provided on the left and right sides of the front of the steel rod body 101. The first mounting holes 103 and the second mounting holes 104 penetrate the back of the steel rod body 101. Multiple combined telescopic rods 3 are staggered and located inside the front and rear T-shaped grooves 102 respectively. Mounting grooves 401 that are adapted to the steel rod body 101 are provided on the left and right sides of the splicing sleeve 4. Third mounting holes 402 corresponding to the second mounting holes 104 are provided on the left and right sides of the front of the splicing sleeve 4. A third bolt 403 is provided inside the third mounting hole 402. The third bolt 403 penetrates the third mounting hole 402 and the second mounting hole 104 and is located on the back of the splicing sleeve 4.

[0053] The second mounting hole 104 is reserved at the end of the steel rod body 101, the two ends of the steel rod body 101 are inserted into the mounting groove 401 at the two ends of the splicing sleeve 4, and are fixed by the third bolt 403. Similarly, a plurality of standard steel rod bodies 101 can be spliced to form a support truss, so as to realize adaptive adjustment of the temporary overhang span and adapt to a larger span.

[0054] As Figures 5-10 shown, in the present embodiment, the limiting groove 9 includes a vertical hole 901 and a clamping hole 902, the inner wall of the sliding rod sleeve 6 is provided with a sliding groove 903, the limiting lug 10 is slidingly connected in the inside of the sliding groove 903, the vertical hole 901 is in communication with the sliding groove 903, the elastic limiting assembly 11 includes a movable clamping tongue 1101 slidingly connected in the inside of the vertical hole 901, the end of the movable clamping tongue 1101 close to the clamping hole 902 is provided with an arc-shaped edge 1102, the end of the movable clamping tongue 1101 away from the clamping hole 902 is provided with a positioning hole 1103, the spring 1104 is installed between the positioning hole 1103 and the inner wall of the vertical hole 901, the movable clamping tongue 1101 is in L-shaped structure and is provided with a push piece 1105 on the outer surface, the top end of the sliding rod sleeve 6 is sleeved with a limiting sleeve 601, the top end of the limiting sleeve 601 is fixedly connected with the top end of the sliding rod sleeve 6 through the screw 602, the outer surface of the limiting sleeve 601 is provided with an operation hole 603 corresponding to the push piece 1105, and the push piece 1105 is fixedly connected with the movable clamping tongue 1101 through the screw. It should be noted that the top end of the sliding rod sleeve 6 is provided with a screw hole matched with the screw 602.

[0055] Specifically, one end of the fixed sliding rod 5 located in the inside of the sliding rod sleeve 6 has a pair of protruding parts, which are called limiting lugs 10. The fixed sliding rod 5 can slide along the sliding groove 903 in the inside of the sliding rod sleeve 6,

[0056] The movable clamping tongue 1101 is arranged at the connection between the clamping hole 902 and the sliding groove 903, and is arranged along the length direction of the sliding groove 903. The inside of the movable clamping tongue 1101 is connected with the vertical hole 901 by the spring 1104 to adjust the expansion and contraction. One side of the movable clamping tongue 1101 at the clamping hole 902 is the arc-shaped edge 1102, and the other side is a straight edge. The limiting sleeve 601 is sleeved on the outer surface of the sliding rod sleeve 6 to limit the movable clamping tongue 1101, so that the movable clamping tongue 1101 can freely slide in the vertical hole 901 and will not fall off. It should be noted that the performance of the spring 1104 selected in the present technology can only expand and contract along the length direction of the spring 1104 when being pressed by the movable clamping tongue 1101, and will not deviate.

[0057] As Figure 4 and Figure 5As shown, in this embodiment, a first mounting ring 14 is fixedly connected to the end of the fixed slide rod 5 away from the slide rod sleeve 6. The first mounting ring 14 is slidably connected in the T-shaped slide groove 102 of the upper chord rod 1. The first bolt 12 passes through the first mounting ring 14 and the first mounting hole 103 on the upper chord rod 1. The threaded connecting rod 8 includes a second lead screw 15 and a fixedly connected second mounting ring 16. The second mounting ring 16 is slidably connected in the T-shaped slide groove 102 of the lower chord rod 2. The second bolt 13 passes through the second mounting ring 16 and the first mounting hole 103 of the lower chord rod 2. The first mounting ring 14 and the second mounting ring 16 slide in the T-shaped slide groove 102 and will not shake after being locked by the bolt.

[0058] This allows the first mounting ring 14 at the top of the combined telescopic rod 3 to be inserted into the T-shaped groove 102 on the rear side of the upper chord 1 and hinged and fixed with the first bolt 12. Then, the second mounting ring 16 at the bottom of the combined telescopic rod 3 is hinged and fixed in the T-shaped groove 102 on the front side of the lower chord 2 with the second bolt 13, thereby connecting the upper and lower ends of the combined telescopic rod 3 to the upper chord 1 and the lower chord 2 respectively and hinged and fixed together.

[0059] like Figure 5 and Figure 9 As shown, in this embodiment, the upper and lower sides of the threaded sleeve 7 are respectively provided with left-hand threaded holes and right-hand threaded holes. The end of the sliding sleeve 6 away from the fixed sliding rod 5 is fixedly connected to the first lead screw 17. The first lead screw 17 and the second lead screw 15 are respectively threadedly connected to the left-hand threaded hole and the right-hand threaded hole. A hexagonal body 18 is fixedly connected to the middle of the outer surface of the threaded sleeve 7.

[0060] Specifically, the threaded sleeve 7 has reverse threads at both ends to connect the sliding sleeve 6 and the threaded connecting rod 8. The threaded sleeve 7 has circular cross-sections at both ends and a regular hexagonal cube 18 in the middle to facilitate the turning of the wrench.

[0061] The assembly method of the height-adjustable cantilever structure assembly support device provided by the present invention is as follows:

[0062] Step one, according to the actual engineering needs, determine the actual required support device height and span, adjust the length of the combined telescopic rod 3, because the fixed slide bar 5 on the limit ear 10 can slide along the sliding groove 903 in the slide bar sleeve 6, when the height between the upper chord 1 and the lower chord 2 needs to be increased, according to the required height, select the corresponding card hole 902, then pull the fixed slide bar 5 up to slide, increase the height between the fixed slide bar 5 and the slide bar sleeve 6, when the limit ear 10 moves to the middle card hole 902 along the sliding groove 903, rotate the slide bar sleeve 6, at this time the limit ear 10 extrudes the arc edge 1102 and compresses the compression spring 1104, until the movable clamping tongue 1101 completely enters the inside of the card hole 902, then the movable clamping tongue 1101 resets under the action of the spring 1104, locks the limit ear 10 of the fixed slide bar 5, and then restricts the movement of the fixed slide bar 5, completes the increase of the height of the combined telescopic rod 3;

[0063] When the height is reduced, the limit ear 10 of the fixed slide bar 5 needs to be moved out of the sliding groove 903, but the limit ear 10 of the fixed slide bar 5 is locked by the straight edge of the movable clamping tongue 1101, at this time the movable clamping tongue 1101 is moved upward by pushing the push piece 1105 from the operation hole 603, then the fixed slide bar 5 remains stationary, reverses the rotation of the slide bar sleeve 6, so that the limit ear 10 on the fixed slide bar 5 enters the sliding groove 903 from the card hole 902, then move the limit ear 10 to the lower card hole 902;

[0064] The limit ear 10 of the fixed slide bar 5 can be locked in the three card holes 902 in the slide bar sleeve 6, that is, corresponding to the three lengths of the combined telescopic rod 3, when the approximate length of the structure is determined, the corresponding part of the card hole 902 can be selected to limit the fixed slide bar 5, and then the hexagonal body 18 on the outer surface of the threaded sleeve 7 is twisted by using a wrench, because the threads inside the two ends of the threaded sleeve 7 are opposite, so that the combined telescopic rod 3 is elongated or shortened when the threaded sleeve 7 is twisted, so as to further adjust the length of the combined telescopic rod 3 in a small range;

[0065] Step two, insert the first mounting ring 14 at the top end of the combined telescopic rod 3 into the T-shaped sliding groove 102 on the rear side of the upper chord 1, at this time the first mounting ring 14 can slide along the T-shaped sliding groove 102, until the through hole on the first mounting ring 14 is aligned with the rightmost first mounting hole 103, then the first bolt 12 is inserted through the first mounting hole 103 and the first mounting ring 14 to be hingedly fixed with the upper chord 1, then the second mounting ring 16 at the bottom end of the combined telescopic rod 3 is hingedly fixed with the second bolt 13 in the T-shaped sliding groove 102 on the front side of the lower chord 2 by the same method, until a plurality of combined telescopic rods 3 are hingedly fixed in sequence, the two combined telescopic rods 3 in the middle are fixed by a bolt, so that the upper and lower ends of the combined telescopic rod 3 are respectively connected with the upper chord 1 and the lower chord 2 and hingedly fixed together;

[0066] Step three, splice standard section support truss, through the second installation hole 104 reserved at the end of the steel rod body 101, insert the end of two steel rod bodies 101 into the installation slot 401 at both ends of the splicing sleeve 4, align the second installation hole 104 at the end of the steel rod body 101 with the third installation hole 402 in the splicing sleeve 4, then insert the third bolt 403 into the aligned installation hole and tighten, at this time the two standard steel rod bodies 101 are assembled, and a plurality of standard steel rod bodies 101 can be spliced in the same way, so as to realize the adaptive adjustment of the temporary cantilever span;

[0067] At this time, the plurality of upper chords 1 and lower chords 2 composed of steel rod bodies 101 are spliced into one body by the splicing sleeve 4 and a plurality of third bolts 403 to form a support truss, so as to realize the purpose of adjustable span according to actual construction requirements, the inner end of the assembled upper chord 1 and lower chord 2 is fixed to the floor through the U-shaped anchor ring embedded in the building, and the adjacent two rows of support trusses are reinforced by diagonal bracing to prevent overturning, so as to adapt to a larger span, increase the stiffness and reduce the vertical deflection.

[0068] Step four, remove the three first bolts 12 that fix the position of the upper chord 1 with a wrench, at this time the first installation ring 14 fixed at the end of the fixed slide rod 5 can slide arbitrarily in the T-shaped sliding groove 102, at this time the two fixed slide rods 5 ends originally fixed by the same first bolt 12 slide relatively along the T-shaped sliding groove 102, as the fixed slide rod 5 end slides relatively, from the front, the combined telescopic rod 3 intersects each other, the height of the upper chord 1 and the lower chord 2 is gradually reduced, when the upper chord 1 and the lower chord 2 contact, at this time the entire combined telescopic rod 3 is embedded in the inside of the T-shaped sliding groove, realizing complete folding, through simple operation, it can be folded when not in use, so as to facilitate transportation or stacking.

[0069] The above only describes the preferred embodiments of the present application, it should be noted that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A height adjustable overhang assembly support apparatus, characterized by, The utility model relates to a kind of combined telescopic poles, including multiple upper chords (1) and multiple lower chords (2), and multiple combination telescopic poles (3) are installed between each group of upper chord (1) and lower chord (2), and adjacent upper chord (1) and adjacent lower chord (2) are fixedly connected by splicing sleeve (4) respectively. The combination telescopic pole (3) includes a fixed slide rod (5), a slide rod sleeve (6), a threaded sleeve (7) and a threaded connecting rod (8), a plurality of limiting grooves (9) are formed in the slide rod sleeve (6), one end of the fixed slide rod (5) is slidably connected inside the slide rod sleeve (6) and fixedly connected with a limiting lug (10) corresponding to the limiting groove (9), an elastic limiting assembly (11) is arranged in the limiting groove (9), the elastic limiting assembly (11) is used to limit the limiting lug (10) in the limiting groove (9), the other end of the fixed slide rod (5) is hingedly fixed to the upper chord (1) by a first bolt (12), the threaded connecting rod (8) is hingedly fixed to the lower chord (2) by a second bolt (13), and the threaded sleeve (7) is used to move the slide rod sleeve (6) and the threaded connecting rod (8) away from or close to each other. The upper chord (1) and the lower chord (2) each include a steel pole body (101), two T-shaped sliding grooves (102) are formed on one side of the steel pole body (101) close to the combination telescopic pole (3), a plurality of first mounting holes (103) are formed in the front middle part of the steel pole body (101), two second mounting holes (104) are formed on the left and right sides of the front of the steel pole body (101), and the first mounting hole (103) and the second mounting hole (104) penetrate the back of the steel pole body (101); a plurality of combination telescopic poles (3) are arranged in front of and behind each other and located inside the front and rear two T-shaped sliding grooves (102). The splicing sleeve (4) is provided with a mounting groove (401) on the left and right sides, which is matched with the steel pole body (101), a third mounting hole (402) corresponding to the second mounting hole (104) is formed on the left and right sides of the front of the splicing sleeve (4), a third bolt (403) is arranged in the third mounting hole (402), and the third bolt (403) penetrates the third mounting hole (402) and the second mounting hole (104); the limiting groove (9) includes a vertical hole (901) and a clamping hole (902), a sliding groove (903) is formed in the inner wall of the slide rod sleeve (6), the limiting lug (10) is slidably connected inside the sliding groove (903), and the vertical hole (901) is communicated with the sliding groove (903). The elastic limiting component (11) comprises a movable clamping tongue (1101) slidably connected in a vertical hole (901), one end of the movable clamping tongue (1101) close to a clamping hole (902) is provided with an arc-shaped edge (1102), one end of the movable clamping tongue (1101) away from the clamping hole (902) is provided with a positioning hole (1103), a spring (1104) is arranged between the positioning hole (1103) and the inner wall of the vertical hole (901), the movable clamping tongue (1101) is in L-shaped structure and the outer surface is provided with a pushing piece (1105); the top end of the sliding rod sleeve (6) is provided with a limiting sleeve (601) on the outer surface, the top end of the limiting sleeve (601) is fixedly connected with the top end of the sliding rod sleeve (6) through a screw (602), the outer surface of the limiting sleeve (601) is provided with an operation hole (603) corresponding to the pushing piece (1105), and the pushing piece (1105) is fixedly connected with the movable clamping tongue (1101) through a screw; The fixed sliding rod (5) is fixedly connected with a first mounting ring (14) at one end away from the sliding rod sleeve (6), the first mounting ring (14) is slidably connected in a T-shaped sliding groove (102) of the upper chord (1), the first bolt (12) penetrates the first mounting ring (14) and the first mounting hole (103) in the upper chord (1), the threaded connecting rod (8) comprises a second screw rod (15) and a second mounting ring (16) fixedly connected with the second screw rod (15), the second mounting ring (16) is slidably connected in a T-shaped sliding groove (102) of the lower chord (2), and the second bolt (13) penetrates the second mounting ring (16) and the first mounting hole (103) in the lower chord (2); The threaded sleeve (7) is provided with a left-hand thread hole and a right-hand thread hole on the upper side and the lower side respectively, one end of the sliding rod sleeve (6) away from the fixed sliding rod (5) is fixedly connected with a first screw rod (17), the first screw rod (17) and the second screw rod (15) are respectively screwed with the left-hand thread hole and the right-hand thread hole, and the outer surface of the threaded sleeve (7) is fixedly connected with a hexagonal body (18) in the middle.

2. A method of assembling a height adjustable overhang assembly support apparatus as claimed in claim 1, wherein, The method comprises the following steps: Step one, according to the actual engineering needs, the height and span of the support device actually needed are determined, and the length of the combined telescopic rod (3) is adjusted. Step two, the first mounting ring (14) at the top end of the combined telescopic rod (3) is inserted into the T-shaped sliding groove (102) at the rear side of the upper chord (1), at this time the first mounting ring (14) can slide along the T-shaped sliding groove (102), until the through hole on the first mounting ring (14) is aligned with the rightmost first mounting hole (103), then the first bolt (12) is inserted through the first mounting hole (103) and the first mounting ring (14) to be hingedly fixed with the upper chord (1), then the second mounting ring (16) at the bottom end of the other combined telescopic rod (3) is hingedly fixed in the T-shaped sliding groove (102) at the front side of the lower chord (2) by the second bolt (13) in the same way, until the multiple combined telescopic rods (3) are hingedly fixed in sequence, the two combined telescopic rods (3) in the front and rear two T-shaped sliding grooves (102) are fixed by a bolt, so that the upper and lower ends of the combined telescopic rod (3) are connected with the upper chord (1) and the lower chord (2) respectively and are hingedly fixed together; Step three, by reserving a second mounting hole (104) at the end of the steel rod body (101), the two steel rod bodies (101) are inserted into the mounting groove (401) at both ends of the splicing sleeve (4) and are fixed by the third bolt (403), and multiple standard steel rod bodies (101) can be spliced to form a support truss, so as to realize temporary adaptive adjustment of the cantilever span and adapt to larger spans; Step four, use a wrench to remove the three first bolts (12) at the fixed position of the upper chord (1), so that the upper chord (1) and the lower chord (2) are in contact and completely folded, which is convenient for transportation or stacking by simple operation.

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