Adjustable assembly type supporting truss

Abstract

The utility model belongs to the technical field of trusses, and discloses an adjustable assembly type supporting truss which comprises two truss units which are the same in structure and arranged in series, a fixing hole is formed in one end of each truss unit, and a plurality of adjusting holes are evenly formed in the other end of each truss unit at intervals in the length direction of the truss unit. The adjusting holes of the two truss units are assembled and connected through bolts. According to the utility model, the fixing holes in the two truss units are assembled and connected with the steel beam to serve as a temporary support for laying the truss floor support plate so as to replace a traditional full steel pipe support structure, so that the construction efficiency is high, and the technical requirements on constructors are low; according to the utility model, the two truss units are connected in series and spliced, and are assembled and connected by selecting different adjusting holes, so that the laying requirements of truss floor support plates with different spans within a certain length range can be met, the application range is wide, the practicability is strong, the trouble of storing steel pipes with different lengths is avoided, and the construction cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to truss technical field, concretely relates to an adjustable assembly type support truss. BACKGROUND

[0002] Steel is a green environmental protection material, and more and more building main bodies adopt steel structure design, for example, office building, teaching building, experiment building, factory building, residential building and the like.At present, after the construction of main structure of steel frame is completed, it is necessary to lay truss floor slab in a large area between two adjacent steel beams, and temporary support should be arranged when the conventional span exceeds three meters.The conventional erection method of the current temporary support is to use full-steel pipe support structure, and the specific method is as follows: one vertical steel pipe support is arranged every two meters in the length direction, and one horizontal steel pipe connection is made every three meters in the height direction, so as to ensure the installation of truss floor slab and the success of concrete pouring, and meet the requirement of deflection deformation.The above method has certain technical defects: 1, the amount of steel pipe used is large, and all are assembled and removed on site, so the construction progress is slow;2, professional construction teams are needed to erect, and the personnel skill requirement is high;3, there is no working construction surface during the period from erecting support to demolding upper concrete slab, which delays the progress of construction period;4, when laying truss floor slab with different spans or large span, different lengths of steel pipes need to be prepared in advance, which leads to a large increase in construction cost.In view of the above technical defects, it is urgent to provide a temporary support with high construction efficiency, simple assembly mode, low construction cost, and adaptive adjustment within a certain length range according to the span size of truss floor slab. CONTENT OF THE UTILITY MODEL

[0003] In view of the deficiencies in the background art, the utility model provides an adjustable assembly type support truss for temporary support for laying truss floor slab to replace the traditional full-steel pipe support structure, and the fixing holes opened at both ends of the truss facilitate quick assembly with steel beams, have high construction efficiency and low construction cost, can be adaptively adjusted within a certain length range according to the span size of truss floor slab, and do not affect the working surface of the lower floor after installation.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] An adjustable assembly type support truss comprises two truss units which are the same in structure and are connected in series, one end of each truss unit is provided with a fixing hole, the other end is uniformly spaced along the length direction and is provided with a plurality of adjusting holes, and the adjusting holes of the two truss units are connected by bolt assembly.

[0006] Preferably, the truss unit comprises upper chord steel, lower chord steel and reinforcing member, the upper chord steel and the lower chord steel are arranged in parallel, and the reinforcing member is connected between the upper chord steel and the lower chord steel.

[0007] Preferably, the length of the lower chord steel is less than that of the upper chord steel, and one end of the lower chord steel is flush with one end of the upper chord steel, and the flush end of the lower chord steel and the flush end of the upper chord steel are provided with a plurality of adjusting holes, and the fixing hole is arranged at the end of the upper chord steel away from the adjusting hole.

[0008] Preferably, the number of adjusting holes on the upper chord steel or the lower chord steel is 3-9.

[0009] Preferably, the reinforcing member comprises a plurality of vertical steels and a plurality of inclined web steels, and the plurality of vertical steels and the plurality of inclined web steels are alternately arranged in sequence.

[0010] Preferably, any one of the vertical steels and the adjacent inclined web steels and the upper chord steel or the lower chord steel form a triangular structure, and the vertical steels are perpendicular to the upper chord steel and the lower chord steel.

[0011] Preferably, the upper chord steel, the lower chord steel, the vertical steel and the inclined web steel are all angle steels.

[0012] Preferably, a support keel is penetrated in the fixing hole, the lower end of the support keel is provided with a support piece, the upper end of the support keel is threadedly connected with an adjusting nut, the truss unit is supported on the adjusting nut, and a fastener is supported on the upper side of the truss unit.

[0013] Preferably, the upper end of the support keel is threadedly connected with a locking nut, and the locking nut and the adjusting nut are located on the upper and lower sides of the fixing hole, respectively.

[0014] Compared with the prior art, the utility model has the beneficial effects as follows:

[0015] (1) The utility model utilizes the fixing holes on the two truss units to assemble and connect with the steel beam, and the fastener and the support piece are tightly abutted between the upper and lower side plates of the steel beam, respectively, so that the effective fixation of the truss unit is realized, and the truss floor is temporarily supported, so that the traditional full-dress steel pipe support structure is replaced, the construction efficiency is high, and the technical requirement for the construction personnel is low.

[0016] (2) The utility model is composed of two truss units connected in series, and the connection part of the two truss units is assembled and connected through the cooperation of the bolts and the plurality of adjusting holes. By selecting different adjusting holes for assembly and connection, the laying requirement of the truss floor with different span sizes in a certain length range can be met, the application range is wide, the practicality is strong, the trouble of reserving steel pipes with different lengths is avoided, and the construction cost is reduced.

[0017] (3) The truss unit structure is firm, has good stability performance and small deflection change, can be prefabricated in a factory according to construction drawing sizes, greatly saves the on-site construction erection time compared with a traditional full-steel-pipe supporting structure, does not affect the working surface of the lower floor after installation, saves the time of erection, removal and concrete stripping of the conventional steel pipe support, is beneficial to the construction period, and when the construction is completed, the supporting truss can be removed and recycled, which is economic and environmentally friendly. BRIEF DESCRIPTION OF DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings.

[0019] Figure 1 It is a schematic diagram of the truss unit structure of the present application;

[0020] Figure 2 It is a schematic diagram of the two truss unit series connection structure of the present application;

[0021] Figure 3 It is a schematic diagram of the connection structure between the supporting furring, supporting member, adjusting nut and locking nut of the present application;

[0022] Figure 4 It is a schematic diagram of the use state structure of the present application;

[0023] In the figure: 1, upper chord steel, 2, lower chord steel, 3, fixing hole, 4, adjusting hole, 5, vertical steel, 6, inclined web steel, 7, steel beam, 701, wing plate, 702, web plate, 8, supporting furring, 9, supporting member, 10, adjusting nut, 11, fastener, 12, locking nut, 13, bolt. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0025] In the description of the present application, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0026] In the utility model, unless another definite provision and limitation, the terms "arrange", "install", "connect", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, can be mechanical connection, can be direct connection, also can be indirectly connected through intermediate medium. For ordinary skilled in the art, the above terms can be understood according to the specific meaning in the utility model.

[0027] As Figure 1 And Figure 2 Adjustable assembly type support truss, including two identical and series connection truss unit, one end of each truss unit is equipped with fixed hole 3, the other end is uniformly spaced along its length direction and is equipped with a plurality of adjusting holes 4, the adjusting hole between two truss units is assembled and connected using bolt 13, one of the truss unit is rotated 180° along the horizontal plane and spliced with another truss unit, by selecting different adjusting hole assembly connection, the overall length of support truss can be adjusted within a certain range to meet the laying requirement of truss floor of different span size. Figure 3 And Figure 4 As shown in the utility model, the fixed hole on the truss unit can be quickly assembled with the corresponding side steel beam, bolt assembly connection can be used, support furring 8 can also be penetrated in the fixed hole, the lower end of support furring is equipped with support piece 9, the upper end of support furring is threadedly connected with adjusting nut 10, the truss unit is supported on adjusting nut 10, and the upper side is supported with fastener 11, the fastener and support piece are respectively abutted with the upper and lower side flange plate of steel beam, the fastener is clamped between the upper side flange plate of truss unit and steel beam, the height is accurately adjusted using adjusting nut, the upper end of support furring 8 is threadedly connected with locking nut 12, locking nut 12 and adjusting nut 10 are respectively located on the upper and lower sides of fixed hole 3, the locking nut is additionally arranged to strengthen the fixing effect of truss unit, so that the assembly of truss unit is fixed, and is used as the temporary support for laying truss floor, to replace the traditional full-dress steel pipe support structure. In the embodiment, the support piece uses angle steel, and the fastener uses building batten.

[0028] As Figure 1 And Figure 2As shown, the truss unit includes an upper chord steel 1, a lower chord steel 2, and a reinforcing member. The upper chord steel 1 and the lower chord steel 2 are arranged parallel to each other vertically. The reinforcing member connects the upper chord steel 1 and the lower chord steel 2. The length of the lower chord steel 2 is shorter than the length of the upper chord steel 1 to facilitate installation and avoid the lower chord steel from contacting the steel beam. One end of the lower chord steel 2 is flush with one end of the upper chord steel 1. Both the flush ends of the lower chord steel 2 and the upper chord steel 1 are provided with multiple adjustment holes 4. Fixing holes 3 are located at the end of the upper chord steel 1 away from the adjustment holes 4. The center of the fixing holes is 30mm from the edge to facilitate assembly and connection with the steel beam. To increase the length adjustment range, the number of adjustment holes on the upper or lower chord steel is 3-9. In this embodiment, the number of adjustment holes is 7. The reinforcing components include multiple vertical steels 5 and multiple diagonal web steels 6, which are alternately distributed. Any vertical steel 5 forms a triangular structure with the adjacent diagonal web steel 6 and the upper chord steel 1 or lower chord steel 2. The vertical steel 5 is perpendicular to the upper chord steel 1 and the lower chord steel 2, improving the structural stability of the truss unit. In this embodiment, the reinforcing components of each truss unit include three vertical steels and three diagonal web steels, which are alternately arranged. The three vertical steels are evenly spaced, and the distance between two adjacent vertical steels is 500mm. The upper chord steel 1, lower chord steel 2, vertical steel 5, and diagonal web steel 6 are all angle steel, which is easy to handle. The truss unit can be prefabricated in the factory by welding according to the dimensions of the drawings, saving the on-site construction workers' erection time. The truss unit has good structural stability and small deflection changes.

[0029] The working principle of this utility model is as follows:

[0030] like Figures 1 to 3 As shown, this utility model uses angle steel welded into two structurally stable truss units. Based on the span of the truss floor decking at the construction site, the two truss units are assembled and connected via bolts 13 to the corresponding adjustment holes 4, achieving a series splicing of the two truss units. The spliced ​​supporting truss is then assembled and fixed between two steel beams 7 as a temporary support, replacing the conventional full-span steel pipe support structure. This significantly reduces the amount of steel pipe used, provides good stability, and minimizes deflection. Furthermore, installation is simple and convenient, requiring no professional scaffolders. After installation, it does not affect the work surface of the lower floors, saving time on the erection, dismantling, and concrete demolding of conventional steel pipe supports, thus benefiting the construction period. After construction is completed, the fasteners 11 can be removed, and the supporting truss can be disassembled from the two steel beams 1 for reuse, saving energy and protecting the environment.

[0031] Combination Figures 1 to 3 As shown, the construction steps for installing the adjustable prefabricated support truss of this utility model are as follows:

[0032] (1) two truss units (prefabricated according to the actual requirements of the construction site) are selected and connected by bolts 13 through suitable adjusting holes 4, so that the overall length meets the span requirements of the truss floor laying of the construction site;

[0033] (2) the assembled support truss is placed on the lower floor, and a dedicated person is responsible for installation (one person on each side, synchronous operation);

[0034] (3) the upper end of the support keel 8 is passed through the fixing hole 3 at the end of the upper chord steel 1 from bottom to top;

[0035] (4) the support piece 9 at the bottom of the support keel 8 is placed on the wing plate 701 on the lower side of the steel beam 7, the adjusting nut 10 is rotated to the appropriate height, the upper chord steel 1 is pressed on the adjusting nut 10, and then the locking nut 12 is rotated to lock and fix;

[0036] (5) the fastener (building batten) 11 is inserted between the upper side wing plate 701 of the steel beam 7 and the upper chord steel 1, and is tightened by using a wrench or hammer, so as to be clamped, so that the upper and lower ends of the detachable temporary support truss are tightly embedded between the upper and lower side wing plates 701 of the steel beam 7.

[0037] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. An adjustable prefabricated support truss, characterized in that: It includes two identical truss units arranged in series. Each truss unit has a fixing hole at one end and multiple adjusting holes evenly spaced along its length at the other end. The adjusting holes of the two truss units are connected by bolts.

2. The adjustable prefabricated support truss as described in claim 1, characterized in that: The truss unit includes an upper chord, a lower chord, and a reinforcing member. The upper chord and the lower chord are arranged parallel to each other, and the reinforcing member is connected between the upper chord and the lower chord.

3. An adjustable prefabricated support truss as described in claim 2, characterized in that: The length of the lower chord steel is less than the length of the upper chord steel, and one end of the lower chord steel is flush with one end of the upper chord steel. Both the lower chord steel and the upper chord steel have multiple adjustment holes at their flush ends. The fixing hole is located at the end of the upper chord steel away from the adjustment hole.

4. An adjustable prefabricated support truss as described in claim 3, characterized in that: The number of adjustment holes on the upper or lower chord steel is 3-9.

5. An adjustable prefabricated support truss as described in claim 2, characterized in that: The reinforcing member includes multiple vertical steel bars and multiple diagonal web steel bars, which are distributed alternately in sequence.

6. An adjustable prefabricated support truss as described in claim 5, characterized in that: Any of the vertical steel bars forms a triangular structure with the adjacent diagonal web steel bars, and the upper chord steel bars or the lower chord steel bars, and the vertical steel bars are perpendicular to the upper chord steel bars and the lower chord steel bars.

7. An adjustable prefabricated support truss as described in claim 5, characterized in that: The upper chord steel, lower chord steel, vertical steel, and diagonal web steel are all angle steel.

8. An adjustable prefabricated support truss as described in claim 1, characterized in that: A supporting keel passes through the fixing hole. A support member is provided at the lower end of the supporting keel, and an adjusting nut is threadedly connected to the upper end of the supporting keel. The truss unit is pressed on the adjusting nut, and a fastener is pressed on its upper side.

9. An adjustable prefabricated support truss as described in claim 8, characterized in that: The upper end of the supporting keel is threaded with a locking nut, and the locking nut and adjusting nut are located on the upper and lower sides of the fixing hole, respectively.

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