Fastener for constructional engineering steel structure

Abstract

The utility model relates to the technical field of fastener tools, in particular to a fastener for a constructional engineering steel structure. The fastener for the constructional engineering steel structure comprises a screw rod, the screw rod is sleeved with a fixing nut in threaded connection, and two arc-shaped mounting hollow seats distributed at 180 degrees are fixedly embedded in the fixing nut; an abutting arc plate in sliding connection is inserted into the arc-shaped mounting hollow base, two pressing arc strips distributed inside and outside are fixedly embedded in the lower surface of the abutting arc plate, and a plurality of evenly-distributed sawteeth are fixedly embedded in the bottoms of the pressing arc strips. According to the fastener for the constructional engineering steel structure, through the pressing arc strip and the sawtooth structure at the bottom of the abutting arc plate, the contact friction force between the fixing nut and a steel plate is remarkably increased, nut reverse rotation and looseness caused by vibration are effectively resisted, the pressing force is automatically adjusted in the sliding process of the abutting arc plate through the synergistic effect of the spring and the guide rod, and therefore the fixing effect is improved. Sawteeth are always attached to the steel surface, and the dynamic stability of connection is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener tool technical field especially relates to a fastener for building engineering steel structure. BACKGROUND

[0002] Steel structure is an important structure form in building engineering, plays a key role in many aspects of building engineering, and provides a stable support system for building. Its high strength and good mechanical properties can withstand the dead weight of the building, wind load, seismic load and other external forces. Whether it is a multi-storey building or a high-rise building, steel structure can effectively transfer the load to the foundation through reasonable design and arrangement, ensuring the safety and stability of the building; and fastener is a key component to ensure the safety and reliability of component connection.

[0003] Traditional fasteners (such as bolts and nuts) are prone to connection failure due to loosening under long-term vibration or dynamic load, which may cause structural safety hazards. In the prior art, spring washers or thread glue are often used to enhance the anti-loosening performance. However, the spring washer loses elasticity after long-term compression, and the anti-loosening effect decays; the thread glue has the problems of curing time limit and difficult disassembly.

[0004] Therefore, it is necessary to provide a new fastener for building engineering steel structure to solve the above technical problems. SUMMARY

[0005] To solve the above technical problems, the utility model provides a fastener for building engineering steel structure.

[0006] The fastener for building engineering steel structure provided by the utility model comprises a screw rod, a fixed nut in threaded connection is sleeved on the screw rod, and two arc-shaped mounting hollow seats distributed at 180° are fixedly embedded on the fixed nut;

[0007] Two arc-shaped bottom cavities coaxially arranged and distributed inside and outside are formed in the bottom of the arc-shaped mounting hollow seat, and the plate surface between the two arc-shaped bottom cavities constitutes an arc-shaped sliding strip;

[0008] A resisting arc plate in sliding connection is inserted into each arc-shaped mounting hollow seat, a guide arc cavity is formed in the resisting arc plate, two compression arc strips distributed inside and outside are fixedly embedded on the lower surface of the resisting arc plate, and a plurality of sawteeth uniformly distributed are fixedly embedded on the bottom of the compression arc strip;

[0009] A spring for compressing the resisting arc plate is installed in the arc-shaped mounting hollow seat.

[0010] Preferably, the end of the arc-shaped sliding strip is provided with an excessive downhill part and a horizontal part, and the horizontal part is fixedly installed with a guide rod fixedly connected with the top wall in the arc-shaped mounting hollow seat.

[0011] Preferably, the end of the lower surface of the abutting arc plate is provided with an excessive uphill part.

[0012] Preferably, the guide rod passes through the guide arc cavity and is in sliding connection with the guide arc cavity, and the two pressing arc strips correspond to the two arc-shaped bottom cavities respectively.

[0013] Preferably, the upper surface of the abutting arc plate is provided with two arc-shaped sliding grooves distributed inside and outside, and the arc-shaped sliding grooves are arranged on both sides of the guide arc cavity, the abutting arc plate is provided with a positioning arc piece, the positioning arc piece is provided with a through hole, and the bottom of the positioning arc piece is fixedly embedded with two arc-shaped sliding rails, and the two arc-shaped sliding rails are respectively inserted into the two arc-shaped sliding grooves and are in sliding connection with the arc-shaped sliding grooves.

[0014] Preferably, the guide rod passes through the through hole of the positioning arc piece, the spring is sleeved on the guide rod, one end of the spring is fixedly connected with the inner top wall of the arc-shaped mounting hollow seat, and the other end of the spring is fixedly connected with the upper surface of the positioning arc piece.

[0015] Preferably, the plate head of the abutting arc plate is fixedly provided with a pushing plate.

[0016] Preferably, the arc-shaped mounting hollow seat and the fixed nut are fixedly provided with a reinforcing rib.

[0017] Preferably, the bottom of the arc-shaped mounting hollow seat is flush with the pressing surface of the fixed nut.

[0018] Compared with the related art, the fastener for building engineering steel structure has the following advantages

[0019] Beneficial effects:

[0020] The abutting arc plate, the spring and the guide rod cooperate to automatically adjust the pressing force during the sliding process of the abutting arc plate, ensure that the sawtooth is always close to the steel surface, and improve the dynamic stability of the connection. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure schematic view of a preferred embodiment of the fastener for building engineering steel structure is shown in the figure.

[0022] Figure 2 The structure schematic view of a preferred embodiment of the fastener for building engineering steel structure is shown in the figure. Figure 1 The partial structure schematic view of the arc-shaped mounting hollow seat of the fixed nut is shown in the figure.

[0023] Figure 3 The structure schematic view of a preferred embodiment of the fastener for building engineering steel structure is shown in the figure. Figure 2Structure diagram of the arc-shaped mounting hollow seat shown in the figure;

[0024] Figure 4 For Figure 2 Structure diagram of the abutting arc plate shown in the figure;

[0025] Figure 5 For Figure 2 Structure diagram of the positioning arc piece shown in the figure.

[0026] In the figure, 1 is a screw rod, 2 is a fixed nut, 2-3 is a reinforcing rib, 3 is an arc-shaped mounting hollow seat, 3a is an arc-shaped bottom cavity, 31 is an arc-shaped sliding strip, 311 is an excessive downhill part, 312 is a horizontal part, 4 is an abutting arc plate, 4a is a guide arc cavity, 4b is an arc-shaped sliding groove, 41 is an excessive uphill part, 42 is a pushing plate, 5 is a pressing arc strip, 51 is a sawtooth, 6 is a guide rod, 7 is a positioning arc piece, 7a is a through hole, 71 is an arc-shaped sliding rail, and 8 is a spring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model.

[0028] The specific implementation of the utility model is described in detail below in combination with specific examples.

[0029] Please refer to Figures 1 to 5 The utility model embodiment provides a fastener for building engineering steel structure, the fastener for building engineering steel structure includes screw rod 1 and fixed nut 2.

[0030] In the embodiment of the utility model, please refer to Figures 1 to 5 The fixed nut 2 is threadedly connected to the screw rod 1, two arc-shaped mounting hollow seats 3 are fixedly embedded on the fixed nut 2 and are distributed at 180 degrees, the bottom of the arc-shaped mounting hollow seat 3 is flush with the pressing surface of the fixed nut 2, two arc-shaped bottom cavities 3a are arranged coaxially and are distributed inside and outside on the bottom of the arc-shaped mounting hollow seat 3, the plate surface between the two arc-shaped bottom cavities 3a forms an arc-shaped sliding strip 31, an abutting arc plate 4 is slidably connected to each arc-shaped mounting hollow seat 3, a guide arc cavity 4a is formed in the abutting arc plate 4, two pressing arc strips 5 are fixedly embedded on the lower surface of the abutting arc plate 4 and are distributed inside and outside, sawteeth 51 are fixedly embedded on the bottom of the pressing arc strip 5 and are uniformly distributed, and a spring 8 is installed in the arc-shaped mounting hollow seat 3 and is used to press the abutting arc plate 4;

[0031] The end of the arc-shaped sliding strip 31 is provided with an excessive downhill portion 311 and a horizontal portion 312, and the horizontal portion 312 is fixedly installed with a guide rod 6 fixedly connected with the inner top wall of the arc-shaped installation hollow seat 3, and the end of the lower surface of the abutting arc plate 4 is provided with an excessive uphill portion 41.

[0032] In the present embodiment: since the arc-shaped sliding strip 31 is provided with the excessive downhill portion 311, and the lower surface of the abutting arc plate 4 is provided with the excessive uphill portion 41, when the abutting arc plate 4 slides in the arc-shaped installation hollow seat 3, the abutting arc plate 4 is smoothly slid on the arc-shaped sliding strip 31 by the excessive uphill portion 41 and the excessive downhill portion 311, so that the arc-shaped sliding strip 31 lifts the abutting arc plate 4, and the abutting arc strip 5 and the sawtooth 51 at the bottom of the abutting arc plate 4 slide into the arc-shaped installation hollow seat 3, at this time the spring 8 is compressed;

[0033] When the abutting arc plate 4 is slid out of the arc-shaped installation hollow seat 3, when the excessive uphill portion 41 provided on the lower surface of the abutting arc plate 4 slides to the excessive downhill portion 311, the abutting arc plate 4 is driven by the spring 8 to slide the abutting arc strip 5 and the sawtooth 51 at the bottom of the abutting arc plate 4 out of the arc-shaped bottom cavity 3a.

[0034] It should be noted that: when the steel structure is butt jointed and fixed, the screw rod 1 is inserted through the butt joint holes of the two groups of steel structures, the fixed nut 2 is sleeved on the screw rod 1 and is threadedly fixed so that the pressing surface of the fixed nut 2 is tightly pressed on the steel surface;

[0035] Then the abutting arc plate 4 is slid out of the arc-shaped installation hollow seat 3 until the excessive uphill portion 41 slides to the excessive downhill portion 311, and the abutting arc plate 4 is driven by the spring 8 to slide the abutting arc strip 5 and the sawtooth 51 at the bottom of the abutting arc plate 4 out of the arc-shaped bottom cavity 3a, so that the abutting arc strip 5 and the sawtooth 51 are pressed on the contact surface of the steel plate, greatly improving the friction force between the fixed nut 2 and the contact surface of the steel plate, reducing the risk that the fixed nut 2 is reversed due to vibration of the steel structure, greatly improving the firmness of the connection between the screw rod 1 and the fixed nut 2 and the steel structure;

[0036] When the abutting arc plate 4 is slid into the arc-shaped installation hollow seat 3, the arc-shaped sliding strip 31 lifts the abutting arc plate 4 and makes the abutting arc strip 5 and the sawtooth 51 slide into the arc-shaped installation hollow seat 3, and then the fixed nut 2 is removed from the screw rod 1 by reversing it.

[0037] In the present application, the abutting arc strip 5 and the sawtooth 51 at the bottom of the abutting arc plate 4 significantly increase the contact friction force between the fixed nut 2 and the steel plate, effectively resist the loosening of the nut 2 caused by vibration, and the cooperation of the spring 8 and the guide rod 6 automatically adjusts the pressing force during the sliding process of the abutting arc plate 4, ensures that the sawtooth 51 is always tightly attached to the steel surface, and improves the dynamic stability of the connection.

[0038] The plate head of the abutting arc plate 4 is fixedly provided with a pushing plate 42, which facilitates sliding of the abutting arc plate 4 into or out of the arc-shaped mounting hollow seat 3.

[0039] The arc-shaped mounting hollow seat 3 and the fixed nut 2 are fixedly provided with a reinforcing rib 2-3, thereby improving the firmness of the connection between the arc-shaped mounting hollow seat 3 and the fixed nut 2.

[0040] In the embodiment of the utility model, please refer to Figures 1 to 5 The guiding rod 6 passes through the guiding arc cavity 4a and is in sliding connection with the guiding arc cavity 4a, the two pressing arc strips 5 correspond to the two arc-shaped bottom cavities 3a respectively, the upper surface of the abutting arc plate 4 is provided with two arc-shaped sliding grooves 4b distributed inside and outside, and the arc-shaped sliding grooves 4b are arranged on the two sides of the guiding arc cavity 4a, the abutting arc plate 4 is provided with a positioning arc piece 7, the positioning arc piece 7 is provided with a through hole 7a, the bottom of the positioning arc piece 7 is fixedly embedded with two arc-shaped sliding rails 71, the two arc-shaped sliding rails 71 are respectively inserted into the two arc-shaped sliding grooves 4b and are in sliding connection with the arc-shaped sliding grooves 4b, the guiding rod 6 passes through the through hole 7a of the positioning arc piece 7, a spring 8 is sleeved on the guiding rod 6, one end of the spring 8 is fixedly connected with the inner top wall of the arc-shaped mounting hollow seat 3, and the other end of the spring 8 is fixedly connected with the upper surface of the positioning arc piece 7.

[0041] It should be noted that the positioning arc piece 7 improves the stability of the spring 8, so that the spring 8 can effectively apply elastic force to the abutting arc plate 4, specifically, when the abutting arc plate 4 slides out of the arc-shaped mounting hollow seat 3, the abutting arc plate 4 slides out along the positioning arc piece 7 due to the limitation of the guiding rod 6, and at this time, the spring 8 presses and abuts the abutting arc plate 4 through the positioning arc piece 7.

[0042] In the embodiment, the positioning arc piece 7 passes through the guiding arc cavity 4a of the abutting arc plate 4, and the two arc-shaped sliding rails 71 at the bottom of the positioning arc piece 7 are respectively inserted into the two arc-shaped sliding grooves 4b of the abutting arc plate 4, thereby further improving the stability of the abutting arc plate 4 when sliding along the arc-shaped mounting hollow seat 3.

[0043] The spring 8 is made of high fatigue strength alloy spring steel material, thereby improving the service life of the spring 8.

[0044] The working principle of the fastener for building engineering steel structure is as follows:

[0045] When the butt joint of the steel structure is fixed, the screw rod 1 is inserted through the butt joint holes of the two groups of steel structures, then the fixing nut 2 is sleeved on the screw rod 1 and is fixed by screwing so that the pressing surface of the fixing nut 2 is pressed on the steel surface; then the abutting arc plate 4 is slid out along the arc-shaped mounting hollow seat 3 until the excessive upslope part 41 slides to the excessive downslope part 311, the pressing arc strip 5 and the sawtooth 51 at the bottom of the abutting arc plate 4 are driven to slide out from the arc-shaped bottom cavity 3a under the action of the spring 8, so that the pressing arc strip 5 and the sawtooth 51 are pressed on the contact surface of the steel plate, the friction force between the fixing nut 2 and the contact surface of the steel plate is greatly improved, the hidden danger that the screw rod 1 is loosened due to the reverse rotation of the fixing nut 2 caused by the vibration of the steel structure is reduced, and the firmness of the connection between the screw rod 1 and the fixing nut 2 to the steel structure is greatly improved.

[0046] When the abutting arc plate 4 slides into the arc-shaped mounting hollow seat 3, the arc-shaped sliding strip 31 lifts the abutting arc plate 4 and makes the pressing arc strip 5 and the sawtooth 51 slide into the arc-shaped mounting hollow seat 3, then the reverse rotation of the fixing nut 2 is performed to take the fixing nut 2 off the screw rod 1, so the operation is simple and convenient.

[0047] The above is only the embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation according to the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A fastener for steel structures in building construction, characterized in that, Includes a screw (1), on which a threaded fixing nut (2) is fitted, and two arc-shaped mounting hollow seats (3) distributed at 180° are fixedly fitted on the fixing nut (2); The bottom of the arc-shaped hollow mounting base (3) is provided with two coaxially arranged and inner and outer arc-shaped bottom cavities (3a), and the plate surface between the two arc-shaped bottom cavities (3a) forms an arc-shaped slide (31). Each of the arc-shaped mounting hollow seats (3) is fitted with a slidingly connected abutting arc plate (4), and a guide arc cavity (4a) is opened on the abutting arc plate (4). Two inner and outer distributed pressing arc strips (5) are fixedly fitted on the lower surface of the abutting arc plate (4), and several evenly distributed serrations (51) are fixedly fitted at the bottom of the pressing arc strips (5). The hollow seat (3) of the arc-shaped installation is equipped with a spring (8) for pressing and abutting the arc plate (4).

2. The fastener for steel structures in building engineering according to claim 1, characterized in that, The end of the arc-shaped slide bar (31) is provided with a transition slope (311) and a horizontal part (312), and the horizontal part (312) is fixedly installed with a guide rod (6) that is fixedly connected to the inner top wall of the arc-shaped mounting hollow seat (3).

3. The fastener for steel structures in building engineering according to claim 2, characterized in that, The lower surface of the abutting arc plate (4) is provided with a transition uphill section (41).

4. The fastener for steel structures in building engineering according to claim 3, characterized in that, The guide rod (6) passes through the guide arc cavity (4a) and is slidably connected to the guide arc cavity (4a). The two pressing arc strips (5) correspond to the two arc-shaped bottom cavities (3a) respectively.

5. The fastener for steel structures in building engineering according to claim 3, characterized in that, The upper surface of the abutting arc plate (4) is provided with two arc-shaped grooves (4b) distributed inside and outside, and the arc-shaped grooves (4b) are provided on both sides of the guide arc cavity (4a). The abutting arc plate (4) is equipped with a positioning arc piece (7), the positioning arc piece (7) is provided with a through hole (7a), and the bottom of the positioning arc piece (7) is fixedly fitted with two arc-shaped slide rails (71). The two arc-shaped slide rails (71) are respectively inserted into the two arc-shaped grooves (4b) and slidably connected to the arc-shaped grooves (4b).

6. The fastener for steel structures in building engineering according to claim 5, characterized in that, The guide rod (6) passes through the through hole (7a) of the positioning arc plate (7), and the spring (8) is sleeved on the guide rod (6). One end of the spring (8) is fixedly connected to the inner top wall of the arc-shaped mounting hollow seat (3), and the other end of the spring (8) is fixedly connected to the upper surface of the positioning arc plate (7).

7. The fastener for steel structures in building engineering according to claim 1, characterized in that, A pusher plate (42) is fixedly installed on the head of the abutting arc plate (4).

8. The fastener for steel structures in building engineering according to claim 1, characterized in that, A reinforcing rib (2-3) is fixedly installed between the arc-shaped hollow mounting base (3) and the fixing nut (2).

9. The fastener for steel structures in building engineering according to claim 1, characterized in that, The bottom of the arc-shaped hollow seat (3) is flush with the pressing surface of the fixing nut (2).

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