Steel structure box type truss

Abstract

The utility model discloses a steel structure box type truss, which relates to the technical field of box type trusses and comprises a truss body, a pull frame is arranged at the top of the truss body, a bottom plate is fixedly connected to the bottom end of the pull frame, a spring is arranged at the top of the bottom plate, a vertical rod movably penetrates through the middle of the bottom plate, and cylinders are fixedly connected to four corners of the truss body. An inserting hole is formed in one end of the cylinder, a screw hole is formed in the other end of the cylinder, a torsion bar is arranged on one side of the screw hole, sealing plates are fixedly connected to the two end faces of the truss body, a clamping hole is formed in the middle of one sealing plate, and a connecting column is movably connected to the middle of the other sealing plate in a threaded and penetrating mode. By arranging a series of structures, the truss can keep better stability in the hoisting process, so that the hoisting operation on the truss is facilitated, meanwhile, the probability of larger displacement of a butt joint surface during butt joint assembly can be reduced, and the rapid butt joint assembly between the box type trusses is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of box-type trusses, in particular to a steel structure box-type truss. Background Art

[0002] A truss is a structure with an unchanged geometric shape composed of a triangular frame made up of straight rods. The connection points between the rods are nodes or nodes. According to the structure, it can be divided into plane trusses and space trusses. The external force on the box truss is not in the same plane as the axis of the rods, so it can be classified as a space truss, and the box truss has a higher strength.

[0003] However, the existing steel box trusses have a large deadweight and need to be hoisted by cranes and other structures. Since the surface of the box trusses is usually a flat steel plate surface, the ropes used for hoisting cannot be stably connected to the trusses, which is not conducive to the hoisting of the box trusses. In addition, when the existing box trusses are assembled and docked, since the docking surfaces of the box trusses are also flat and relatively smooth, when the trusses are fixed with bolts after docking, the docking surfaces are prone to large displacement due to mutual sliding, resulting in the box trusses being difficult to maintain a stable state during docking, which is not conducive to the rapid docking and assembly between the box trusses. Utility Model Content

[0004] The purpose of the utility model is to provide a steel structure box truss to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel structure box-type truss, comprising a truss body, a pull frame is provided on the top of the truss body, the bottom end of the pull frame is fixedly connected to a bottom plate, a spring is provided on the top of the bottom plate, a vertical rod is movably penetrated through the middle of the bottom plate, cylinders are fixedly connected at the four corners of the truss body, a socket is provided at one end of the cylinder, a screw hole is provided at the other end of the cylinder, a torsion rod is provided on one side of the screw hole, both end surfaces of the truss body are fixedly connected to closing plates, a clamping hole is provided in the middle of one of the closing plates, and a connecting column is movably penetrated through the middle of the other closing plate.

[0006] Preferably, the top end of the spring is fixedly connected to the truss body, and the bottom end of the spring is fixedly connected to the bottom plate.

[0007] Preferably, the top end of the vertical rod is fixedly connected to the truss body, and the spring is movably sleevedly connected to the vertical rod.

[0008] Preferably, ear blocks are fixedly connected to the middle parts of the four sides of the sealing plate, and circular holes are opened in the middle parts of the ear blocks.

[0009] Preferably, one end of the torsion rod is fixedly connected to a screw rod, the screw rod is movably threadedly connected to the screw hole, and the torsion rod is movably connected to the screw hole through the screw rod.

[0010] Preferably, a plurality of inclined plates are fixedly connected to the inner wall of the truss body, and a central column is fixedly connected to the intersection of the inclined plates.

[0011] Preferably, the bottom end of the vertical rod is fixedly connected to the central column, and the pull frame is movably connected to the truss body via a spring and the vertical rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. This steel structure box truss, through the pull frame, bottom plate, spring and vertical rod, makes the surface of the truss protrude a frame for the lifting rope, and the frame can press the rope to the surface of the truss, so that when the truss is lifted, it is not easy to swing left and right with the sliding of the rope, so as to maintain the stability of the truss when lifted, which is conducive to the lifting operation of the truss.

[0014] 2. The steel structure box truss uses the sockets, clamping holes, torsion rods and connecting columns so that the two butt joints of the box truss can be temporarily fixed by plugging before being fastened by bolts, so that when the bolts are tightened, the two butt joints can maintain a stable connection state, reducing the probability of large displacement of the butt joints during butt joint assembly, thereby facilitating the rapid butt joint assembly between box trusses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the torsion bar and the connecting column of the utility model;

[0017] Figure 3 This is a schematic diagram of the pull frame and spring structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the bottom plate and the clamping hole structure of the utility model.

[0019] In the figure: 1. cylinder; 2. truss body; 3. pull frame; 4. socket; 5. clamping hole; 6. sealing plate; 7. ear block; 8. torsion bar; 9. screw; 10. connecting column; 11. screw hole; 12. inclined plate; 13. center column; 14. spring; 15. bottom plate; 16. vertical rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figures 1 to 4 As shown, the steel structure box-type truss of this embodiment includes a truss body 2, a pull frame 3 is provided on the top of the truss body 2, a bottom end of the pull frame 3 is fixedly connected to a bottom plate 15, a spring 14 is provided on the top of the bottom plate 15, a vertical rod 16 is movably penetrated through the middle of the bottom plate 15, a cylinder 1 is fixedly connected to the four corners of the truss body 2, a socket 4 is provided at one end of the cylinder 1, a screw hole 11 is provided at the other end of the cylinder 1, a torsion rod 8 is provided on one side of the screw hole 11, and a closing plate 6 is fixedly connected to the two end surfaces of the truss body 2, a clamping hole 5 is provided in the middle of one of the closing plates 6, and a connecting column 10 is movably penetrated through the middle of the other closing plate 6 through a thread.

[0024] Specifically, the truss body 2 is welded by four steel plates and four steel cylinders 1, and its appearance is similar to a box, and its interior is hollowed out to reduce the deadweight of the truss itself. The cross-section of the pull frame 3 is "rectangular". In the initial state, due to its own gravity and the force of the spring 14, the top frame of the pull frame 3 will fit the top of the truss body 2, so that the pull frame 3 can be retracted into the truss, increasing the protection of the pull frame 3 and preventing the pull frame 3 from deforming. The bottom plate 15 is a rectangular plate, so that after the pull frame 3 is pulled out of the truss, the bottom frame can have a better contact surface with the spring 14, so that the force of the spring 14 can act on the pull frame 3 through the bottom plate 15, thereby realizing the clamping and fixing of the pull frame 3 to the lifting rope. The vertical rod 16 is a round rod-shaped structure, which can limit the range of movement of the pull frame 3, so that the pull frame 3 maintains better stability when sliding up and down, thereby It is convenient to connect the pull frame 3 with the lifting rope. The interior of the cylinder 1 is a solid structure, which can transform the obtuse angle of the box-type truss body 2 into a soft arc surface, making the structural appearance look softer. At the same time, it can increase the contact surface of the four corners of the truss body 2, making the truss body 2 easier to dock. The inner diameter of the socket 4 is adapted to the outer diameter of the torsion bar 8. When the two truss bodies 2 are docked, the stability of the truss body 2 when fixed by bolts can be improved by the prior docking of the torsion bar 8 with the socket 4, which is beneficial to the rapid docking and assembly of the truss body 2. The surface of the sealing plate 6 is flat, and magnetic material is embedded in the sealing plate 6. When the two sealing plates 6 are in contact, they can be attracted to each other by magnetic force. The outer diameter of the connecting column 10 is adapted to the inner diameter of the card hole 5, which is more conducive to the docking of the torsion bar 8 and the socket 4, as well as the connecting column 10 and the card hole 5.

[0025] Furthermore, the top end of the spring 14 is fixedly connected to the truss body 2, and the bottom end of the spring 14 is fixedly connected to the bottom plate 15. The spring 14 can act on the bottom frame of the pull frame 3 through its own deformation, so that the pull frame 3 can clamp the flat rope for lifting, thereby facilitating the lifting of the truss body 2.

[0026] Furthermore, the top end of the vertical rod 16 is fixedly connected to the truss body 2, and the spring 14 is movably connected to the vertical rod 16. The vertical rod 16 can maintain the stability of the spring 14 during deformation, so that the deformation of the spring 14 is limited to the vertical direction, thereby preventing the spring 14 from causing side effects on the force of the pull frame 3 due to excessive twisting.

[0027] Furthermore, ear blocks 7 are fixedly connected to the middle of the four sides of the sealing plate 6, and circular holes are opened in the middle of the ear blocks 7. The function of the ear blocks 7 is to pass bolts so that the two end surfaces of the truss body 2 can be butt-jointed and assembled after the bolts pass through the circular holes and the nuts are engaged.

[0028] Furthermore, one end of the torsion rod 8 is fixedly connected to a screw rod 9, which is movably threadedly connected to a screw hole 11. The torsion rod 8 is movably connected to the screw hole 11 through the screw rod 9. The screw rod 9 allows the torsion rod 8 to be removed from one end of the cylinder 1, thereby improving the flexibility of the torsion rod 8 when in use.

[0029] Furthermore, the inner wall of the truss body 2 is fixedly connected with a plurality of inclined plates 12, and the intersection of the inclined plates 12 is fixedly connected with a central column 13. The inclined plates 12 can increase the stress inside the truss body 2, making the inside of the truss body 2 more stable, thereby increasing the overall stability of the box-type truss.

[0030] Furthermore, the bottom end of the vertical rod 16 is fixedly connected to the central column 13, and the pull frame 3 is movably connected to the truss body 2 through the spring 14 and the vertical rod 16, so that the vertical rod 16 can maintain good stability inside the truss body 2, thereby ensuring the limiting effect of the vertical rod 16 on the pull frame 3 and the spring 14.

[0031] The method of using this embodiment is as follows: when hoisting the steel structure box-type truss, it is necessary to first pull the pull frame 3 upwards so that the top frame of the pull frame 3 is separated from the top surface of the truss body 2, so that a notch appears between the pull frame 3 and the top surface of the truss body 2. At this time, the bottom plate 15 on the bottom frame of the pull frame 3 will compress the spring 14, so that the spring 14 produces a downward force, and then the flat rope used for hoisting is passed through the notch, and then the pull frame 3 is released, so that the pull frame 3 is subjected to the downward force of the spring 14 and moves toward the top surface of the truss body 2, so that the rope can be clamped between the pull frame 3 and the truss body 2. When the truss body 2 is lifted off the ground, the force generated by the spring 14 is sufficient to offset the gravity of the truss body 2 on the pull frame 3, so that the pull frame 3 can always be close to the surface of the truss body 2, so that the rope is always when the truss body 2 is hoisted. It is clamped on the top surface of the pull frame 3 and the truss body 2. When the truss body 2 is connected, the torsion bar 8 and the connecting column 10 on one of the truss bodies 2 can be inserted into the socket 4 and the clamping hole 5 on the other truss body 2, so that the closing plates 6 of the two trusses are temporarily connected and connected. Then the bolts can be passed through the round holes on the ear blocks 7, and the ends of the bolts are locked with nuts, so that the end surfaces of the closing plates 6 of the two trusses are locked and fixed. In this way, the connection assembly of the two trusses is completed. When the torsion bar 8 is not needed, the torsion bar 8 can be twisted along the cylinder 1 so that the screw 9 at the end of the torsion bar 8 is screwed out along the screw hole 11, so that the torsion bar 8 is removed from the cylinder 1, and then the connecting column 10 can be removed from the middle of the closing plate 6 in the same way, so that the side of the closing plate 6 at one end of the truss body 2 remains flat, which is beneficial to the connection between the truss body 2 and the vertical base column.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A steel structure box truss, comprising a truss body (2), characterized in that: A pull frame (3) is provided at the top of the truss body (2), and the bottom end of the pull frame (3) is fixedly connected to a bottom plate (15), a spring (14) is provided at the top of the bottom plate (15), and a vertical rod (16) is movably penetrated through the middle of the bottom plate (15). The four corners of the truss body (2) are fixedly connected to a cylinder (1), one end of the cylinder (1) is provided with a socket (4), the other end of the cylinder (1) is provided with a screw hole (11), and a torsion rod (8) is provided on one side of the screw hole (11). Both end surfaces of the truss body (2) are fixedly connected to a sealing plate (6), one of the sealing plates (6) is provided with a clamping hole (5) in the middle, and the other sealing plate (6) is movably threaded through the middle to be connected to a connecting column (10).

2. A steel structure box truss according to claim 1, characterized in that: The top end of the spring (14) is fixedly connected to the truss body (2), and the bottom end of the spring (14) is fixedly connected to the bottom plate (15).

3. A steel structure box truss according to claim 1, characterized in that: The top end of the vertical rod (16) is fixedly connected to the truss body (2), and the spring (14) is movably sleeve-connected to the vertical rod (16).

4. The steel structure box truss according to claim 1, characterized in that: The middle parts of the four sides of the sealing plate (6) are fixedly connected with ear blocks (7), and the middle parts of the ear blocks (7) are each provided with a circular hole.

5. The steel structure box truss according to claim 1, characterized in that: One end of the torsion rod (8) is fixedly connected to a screw rod (9), and the screw rod (9) is movably threadedly connected to the screw hole (11). The torsion rod (8) is movably connected to the screw hole (11) via the screw rod (9).

6. The steel structure box truss according to claim 1, characterized in that: A plurality of inclined plates (12) are fixedly connected to the inner wall of the truss body (2), and a central column (13) is fixedly connected to the intersection of the inclined plates (12).

7. A steel structure box truss according to claim 6, characterized in that: The bottom end of the vertical rod (16) is fixedly connected to the central column (13), and the pull frame (3) is movably connected to the truss body (2) via a spring (14) and the vertical rod (16).

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