Temporary deflection control device for steel truss erection

Abstract

The utility model discloses a temporary deflection control device for steel net rack erection. The temporary deflection control device comprises a steel net rack deflection control mechanism, the steel net rack deflection control mechanism comprises a steel net rack mounting and jacking assembly, the steel net rack mounting and jacking assembly comprises transverse frames arranged on the two sides at intervals, the two sides of each transverse frame are fixedly connected with connecting beams correspondingly, and a plurality of net rack side abutting assemblies matched with one another are mounted on the connecting beams in a hinged mode; the net rack side abutting assembly comprises a side abutting wheel, the side abutting wheel is rotationally connected with a wheel frame, and the lower end of the wheel frame is hinged to the connecting beam; the lower ends of the wheel carriers on the two sides are pulled through pulling springs respectively. A supporting assembly is fixedly connected between the tops of the transverse frames and comprises a supporting frame, and supporting rollers are rotationally connected to the supporting frame. According to the structure, in the construction process, temporary control over deflection deformation of the steel mesh structure is greatly improved, and the technical defects that due to deflection, the mesh frame deforms, an accessory structure is not easy to fix and install, and the safety of the steel mesh frame is not high are overcome.

Description

Technical Field

[0001] This utility model belongs to the field of steel space frame deflection control technology, and in particular relates to a temporary control device for steel space frame erection deflection. Background Technology

[0002] A steel space frame is a space frame structure made of steel, often used for roofs in building structures, especially large ones. Using a steel space frame as the supporting framework for large roofs not only simplifies construction and reduces costs, but also ensures high stability. However, during steel space frame construction, the main structure (often composed of slender members) has a very large span. Given the large span of the metal space frame, the steel itself, under the influence of gravity, exhibits deflection, making it prone to downward deformation and resulting in significant downward deformation and poor stability.

[0003] Therefore, after the main structure of the space frame is erected, auxiliary structures need to be installed on the space frame to increase its structural stability and prevent excessive deformation caused by its deflection. Before the processing of the auxiliary steel frame, supports need to be installed at the bottom of the main structure of the space frame to increase construction safety, allowing the auxiliary structures to be installed or welded while the supports are in place.

[0004] However, in the current construction process, the operators temporarily support the bottom of the steel space frame with long support rods to resist the deflection deformation of the material. This allows them to install auxiliary structures at the support position while moving the support rods to the next installation position, repeating this process to continuously move the supports and install auxiliary structures during the processing of the steel space frame.

[0005] However, because the support rods tend to become stuck at the bottom of the space frame after being supported, it makes movement difficult. Furthermore, this method requires constantly unloading the support rods and moving them, making the installation of the space frame overly cumbersome and complex, resulting in very low construction efficiency. Utility Model Content

[0006] Based on the above background, the purpose of this utility model is to provide a temporary control device for the deflection of a steel grid frame.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A temporary control device for the deflection of a steel space frame includes a steel space frame deflection control mechanism;

[0009] The steel space frame deflection control mechanism includes a steel space frame mounting top assembly, which includes horizontal frames spaced apart on both sides. Connecting beams are fixedly connected to both sides of the horizontal frames, and several mutually cooperating space frame side abutment components are hinged on the connecting beams.

[0010] The space frame side abutment assembly includes a side abutment wheel, the side abutment wheel is rotatably connected to a wheel frame, and the lower end of the wheel frame is hinged to a connecting beam;

[0011] The lower ends of the two wheel frames are pulled by tension springs;

[0012] A support assembly is fixedly connected between the tops of the crossbeams. The support assembly includes a support frame, and support rollers are rotatably connected to the support frame.

[0013] Preferably, the wheel frame includes L-shaped wheel frame arm plates that are rotatably connected to the front and rear sides of the side abutment wheel respectively;

[0014] A connecting column is fixedly connected between the lower ends of the L-shaped wheel frame arm plates, and a convex arm plate is fixedly connected to the connecting column. The convex arm plate is rotatably connected to the connecting beam.

[0015] Preferably, a spring seat is fixedly connected to the bottom of the L-shaped wheel frame arm plate, and the two ends of the tension spring are respectively connected between the spring seats.

[0016] Preferably, a bottom bracket is fixedly connected between the bottoms of the crossbeams;

[0017] A telescopic rod is fixedly connected to the bottom of the bottom bracket;

[0018] The bottom of the telescopic rod is fixedly connected to a bottom trolley;

[0019] The bottom trolley includes a frame, and several rolling wheels are rotatably connected to the front and rear ends of the frame.

[0020] Preferably, the top of the vehicle frame is equipped with a top mechanism for the top bottom bracket on both sides of the top.

[0021] Preferably, the upper lifting mechanism includes a lower screw tube fixedly connected to the top of the vehicle frame, and the lower screw tube is threadedly connected to an upper lifting rod;

[0022] The bottom of the upper push rod is fixedly connected to an upper elastic push ball.

[0023] Preferably, the temporary deflection control device for the steel grid frame also includes traction and movement structures on both sides.

[0024] Preferably, the traction and movement structure includes a motor, and a rope winding wheel is fixedly connected to the output shaft of the motor, with a steel wire rope wound on the rope winding wheel;

[0025] The outer end of the steel wire rope is fixedly connected to steel wire ropes that are respectively fixedly connected to the vehicle frame and the bottom bracket.

[0026] Preferably, the telescopic rod includes a lower sleeve fixedly connected to the center position of the top of the frame, and an upper movable rod slidably connected to the lower sleeve. The upper movable rod is fixedly connected to the center position of the bottom of the base bracket.

[0027] This utility model has the following beneficial effects:

[0028] 1. During operation, when the support rollers are supporting the bottom of the main steel space frame, the operation method is as follows: the steel space frame is raised to the height of the top-mounted installation component until the support rollers are supporting the bottom of the main steel space frame. The side abutment rollers distributed on both sides support the sides of the main steel space frame. Specifically, during the raising of the top-mounted installation component, the side abutment rollers on both sides touch the steel space frame. At this time, the L-shaped wheel frame arm plate flips to increase the spacing, and during the flipping process, the tension springs lengthen. Through the elastic clamping of the side abutment rollers on both sides, stable movement is maintained during subsequent movements. This allows for flexible movement to the next location after the installation of auxiliary structures on the main steel space frame. This significantly increases the protection of the steel space structure during construction, avoiding technical defects such as deformation of the space frame due to deflection, difficulty in fixing auxiliary structures, and low safety of the steel space frame.

[0029] 2. During operation, if the entire device needs to be moved to the rear, the front rope reel unwinds the wire rope, while the rear rope reel winds it up. This method allows for flexible adjustment of the support position during space frame construction, thereby enabling convenient, efficient, and flexible control over the deformation position of the space frame caused by deflection. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the steel space frame mounting top assembly in this embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the upper lifting mechanism in an embodiment of the present utility model;

[0034] Figure 4 This is a schematic diagram of the tension spring in an embodiment of the present invention;

[0035] Figure 5 This is a structural schematic diagram of the steel space frame mounting top assembly from another perspective in an embodiment of this utility model.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0040] Example 1

[0041] like Figure 1-5 As shown, a temporary deflection control device for steel space frame erection includes a steel space frame deflection control mechanism. This mechanism provides temporary support at the bottom of the steel space frame (main frame) during erection and installation, facilitating the installation of auxiliary structures. This bottom support also helps to mitigate the drawbacks of deflection deformation of the steel space frame, which can hinder the installation of auxiliary structures (space frame deformation) and compromise the safety of construction operations due to low stability of the steel space frame.

[0042] Specifically, the steel space frame deflection control mechanism includes a steel space frame mounting top assembly 4. The steel space frame mounting top assembly 4 includes horizontal frames 44 spaced apart on both the front and rear sides. Columnar connecting beams 41 are fixedly connected to the left and right sides of each horizontal frame 44. Several mutually cooperating space frame side abutment assemblies are hinged to the connecting beams 41. That is, the space frame side abutment assemblies are symmetrically distributed from left to right.

[0043] The space frame side abutment assembly includes a side abutment wheel 47, which is rotatably connected to a wheel frame. Specifically, the wheel frame includes L-shaped wheel frame arm plates 42 rotatably connected to the front and rear sides of the side abutment wheel 47. A connecting column is fixedly connected between the lower ends of the L-shaped wheel frame arm plates 42, and a protruding arm plate 421 is fixedly connected to the connecting column. The protruding arm plate 421 is rotatably connected to the connecting beam 41.

[0044] Meanwhile, the lower end of the wheel frame is pulled by tension springs 43; specifically, the bottom of the L-shaped wheel frame arm plate 42 is fixedly connected to a spring seat 431, and the two ends of the tension spring 43 are respectively connected between the spring seats 431.

[0045] Meanwhile, a support assembly is fixedly connected between the tops of the crossbeams 44. The support assembly includes a support frame 45 (the support frame 45 is an inverted U-shaped structure), and a support roller 46 is rotatably connected to the support frame 45.

[0046] During operation, when the support rollers 46 are supported at the bottom of the main steel space frame, the operation method is as follows: the steel space frame installation top assembly 4 is raised to the height where the support rollers 46 are supported at the bottom of the main steel space frame. Meanwhile, the side abutment rollers 47 distributed on both sides support the main steel space frame. Specifically, during the lifting of the steel space frame installation top assembly 4, the side abutment rollers 47 on both sides touch the steel space frame. At this time, the L-shaped wheel frame arm plate 42 flips to increase the spacing, and during the flipping process, the tension spring 43 is stretched. Through the elastic clamping of the side abutment rollers 47 on both sides, stable movement is maintained during subsequent movements. This allows for flexible movement to the next location after the installation of auxiliary structures on the main steel space frame, greatly increasing the protection of the steel space structure during construction and avoiding technical defects such as deformation of the space frame due to deflection, making it difficult to fix and install auxiliary structures, and compromising the safety of the steel space frame. The above method enables temporary control of the deflection of the steel space frame at the construction site. After the deformation of the space frame is effectively resolved with the installation of the auxiliary structures, it is moved to the next construction site for deflection control again.

[0047] The steel space frame can be supported on various steel space frames, most of which have a bottom span beam (the span beam bends under the weight of gravity and the weight of the space frame, and the span beam is welded with steel rods to form a space frame structure.

[0048] Example 2

[0049] like Figure 1-5 As shown, in this embodiment, based on the structure of embodiment 1, a support roller 5 is fixedly connected between the bottom of the cross frame 44; a telescopic rod 3 is fixedly connected to the bottom of the support roller 5; a bottom trolley is fixedly connected to the bottom of the telescopic rod 3; the bottom trolley includes a frame 2, and several rolling wheels 21 are rotatably connected to the front and rear ends of the frame 2 respectively.

[0050] Specifically, similar to the existing telescopic rod structure, the telescopic rod includes a lower sleeve fixedly connected to the center position of the top of the frame 2, and an upper movable rod slidably connected to the lower sleeve. The upper movable rod is fixedly connected to the center position of the bottom of the base bracket.

[0051] Meanwhile, upper support rollers 5 are installed on both sides of the top of the frame. The upper support mechanism includes a lower screw tube 62 fixedly connected to the top of the frame 2, and the lower screw tube 62 is threadedly connected to an upper push rod 61 (the lower end of the upper push rod 61 is fixedly connected to a ring handle 621); the bottom of the upper push rod 61 is fixedly connected to an upper elastic push ball 611 (rubber material, used to increase friction).

[0052] During operation, the operator rotates the ring handle 621 to drive the upper push rod 61 to rise and reach the upper elastic push ball 611 to support the roller 5. During this process, the telescopic rod is extended.

[0053] The upper support roller 5 increases the upper force of the steel space frame installation upper component 4, thereby increasing the upper force and ensuring that after the steel space frame is deformed due to deflection, it recovers its deformation under the action of the upper force, which facilitates the installation of auxiliary structures (mostly connecting steel frames) such as welding (while deflection deformation makes welding impossible).

[0054] Example 3

[0055] like Figure 1-5 As shown, this embodiment, based on the structure of embodiment 2, requires moving the device to the next location for continued support after installation at one position. The aforementioned temporary deflection control device for the steel grid frame also includes traction and movement structures on both the front and rear sides. This allows for the coordinated movement of the entire device along the steel grid frame as needed during construction.

[0056] Specifically, the traction and movement structure includes a motor 1 (in the existing way, the motor 1 is fixedly installed on the working bracket, which is not shown in the figure). A rope winding wheel is fixedly connected to the output shaft of the motor 1, and a steel wire rope 11 is wound on the rope winding wheel. The outer end of the steel wire rope 11 is fixedly connected to a steel wire rope that is fixedly connected to the frame 2 and the support roller 5 respectively (the steel wire rope is V-shaped to achieve vertical fixation and increase the stability of movement).

[0057] During operation, if the entire device needs to be moved to the rear, the front rope reel unwinds the wire rope, while the rear rope reel winds it up. This method allows for flexible adjustment of the support position during space frame construction, thereby enabling convenient, efficient, and flexible control over the deformation position of the space frame caused by deflection.

[0058] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A steel truss erection deflection temporary control device, characterized in that, The steel net rack deflection control mechanism comprises a steel net rack installation upper jacking assembly, the steel net rack installation upper jacking assembly comprises transverse frames arranged at intervals on both sides, and connecting beams are fixedly connected to both sides of the transverse frames respectively, a plurality of mutually cooperating net rack side abutting assemblies are hingedly installed on the connecting beams; The net rack side abutting assembly comprises a side abutting wheel, a wheel frame is rotatably connected to the side abutting wheel, and the lower end of the wheel frame is hingedly connected to the connecting beam; The lower ends of the two wheel frames are respectively pulled by pulling springs; A supporting assembly is fixedly connected between the top portions of the transverse frames, the supporting assembly comprises a supporting frame, and supporting rollers are rotatably connected to the supporting frame. The wheel frame comprises L-shaped wheel frame arm plates rotatably connected to the front and rear sides of the side abutting wheel respectively; 2. The steel truss erection deflection temporary control device of claim 1, wherein, The lower ends of the L-shaped wheel frame arm plates are fixedly connected to a connecting column, a convex arm plate is fixedly connected to the connecting column, and the convex arm plate is rotatably connected to the connecting beam. The bottom of the L-shaped wheel frame arm plate is fixedly connected to a spring seat, and the two ends of the pulling spring are respectively connected between the spring seats.

3. The steel truss erection deflection temporary control device of claim 2, wherein, The bottom of the transverse frame is fixedly connected to a bottom bracket; 4. The steel truss erection deflection temporary control device of claim 1, wherein, The bottom of the bottom bracket is fixedly connected to an extension rod; The bottom of the extension rod is fixedly connected to a bottom trolley; The bottom trolley comprises a trolley frame, a plurality of rolling wheels are rotatably connected to the front and rear ends of the trolley frame respectively. The top portions of the trolley frame are respectively provided with upper jacking mechanisms for jacking the bottom bracket.

5. The steel truss erection deflection temporary control device of claim 4, wherein, The upper jacking mechanism comprises a lower screw pipe fixedly connected to the top portion of the trolley frame, and an upper jacking rod is threadedly connected to the lower screw pipe; 6. The steel truss erection deflection temporary control device of claim 5, wherein, The bottom of the upper jacking rod is fixedly connected to an upper elastic jacking ball. The steel net rack erection deflection temporary control device further comprises pulling and moving structures arranged on both sides.

7. The steel truss erection deflection temporary control device of claim 4, wherein, The pulling and moving structure comprises a motor, a wire winding wheel is fixedly connected to the output shaft of the motor, and a steel wire rope is wound around the wire winding wheel; 8. The steel truss erection deflection temporary control device of claim 7, wherein, The outer end of the steel wire rope is fixedly connected to a steel wire rope fixedly connected to the trolley frame and the bottom bracket. The extension rod comprises a lower sleeve fixedly connected to the top center position of the trolley frame, an upper movable rod is slidingly connected to the lower sleeve, and the upper movable rod is fixedly connected to the bottom center position of the bottom bracket.

9. The steel truss erection deflection temporary control device of claim 4, wherein, ​

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