A bolt assembly for a square tube integrated system

Abstract

The utility model discloses a bolt assembly for square tube integrated system, and the bolt assembly is composed of a bolt, a spring, a washer and a trapezoidal nut, the bolt passes through the washer, the spring and the trapezoidal nut in sequence, the trapezoidal nut has a threaded hole matched with the bolt and a square neck structure of non -circular, the bottom of trapezoidal nut is equipped with at least two antiskid teeth, the spring is sleeved on the bolt and is located between the washer and the trapezoidal nut, the utility model discloses the sustained pre -tightening force of spring can prevent the bolt from loosening due to vibration. Adopt the washer with teeth, and the triangular tooth can embed the square tube surface under the action of locking force, so that the square tube surface produces indentation or recess, produces huge friction and resistance, realizes double anti -loose.

Description

Technical Field

[0001] This utility model belongs to the field of fastener technology, specifically relating to a bolt assembly for a square tube integrated system. Background Technology

[0002] In the fields of construction, display stands, and shelving, square tube integrated systems are widely used due to their modular design and integrated installation advantages. This system uses square tubes as the main component and achieves rapid assembly through various connectors.

[0003] In existing technologies, the connection between square tubes and fittings mostly uses ordinary bolts and nuts. During installation, operators usually need to blindly operate inside the square tube to fix the nuts, or use two tools simultaneously on the outside of the square tube for tightening, making the installation process cumbersome and inefficient. In addition, when the system is subjected to vibration during operation, ordinary bolt connections are prone to loosening, affecting the stability and safety of the structure. Summary of the Invention

[0004] The purpose of this invention is to provide a bolt assembly for a square tube integrated system, which enables the system to have better stability and strength after installation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A bolt assembly for a square tube integrated system comprises a bolt, a spring, a washer, and a trapezoidal nut. The bolt passes sequentially through the washer, the spring, and the trapezoidal nut. The trapezoidal nut has a threaded hole that mates with the bolt and a non-circular square neck structure. The bottom of the trapezoidal nut has at least two anti-slip teeth. The spring is sleeved on the bolt and located between the washer and the trapezoidal nut.

[0006] Furthermore, the washer has at least two anti-slip teeth on the side that contacts the square tube.

[0007] Furthermore, the cross-section of the anti-slip teeth is triangular.

[0008] Furthermore, the inner ring of the washer is recessed for fitting a spring.

[0009] Furthermore, the cross-section of the square neck structure of the trapezoidal nut is rectangular or square.

[0010] The above technical solution can achieve the following beneficial effects: The continuous preload provided by the spring in this invention prevents bolts from loosening due to vibration. A toothed washer is used; its triangular teeth can embed into the surface of the square tube under the locking force, creating indentations or grooves on the surface of the square tube, generating significant friction and resistance, thus achieving double anti-loosening.

[0011] By replacing the toothed washer or the flat washer, it can be used in a variety of connection scenarios such as square tube to square tube fittings, square tube to C-shaped steel and steel fittings, and has strong versatility.

[0012] By using spring preload and the fit between the square neck of the trapezoidal nut and the square tube hole, initial fixation can be achieved with one hand, greatly improving installation efficiency. Attached Figure Description

[0013] Figure 1 This is the front view of Embodiment 1.

[0014] Figure 2 This is a side view of a trapezoidal nut.

[0015] Figure 3 This is a bottom view of a trapezoidal nut.

[0016] Figure 4 This is the front view of Example 2.

[0017] Figure 5 This is a side view of a toothed washer.

[0018] Figure 6 This is a top view of a toothed washer.

[0019] Figure 7 It uses a state diagram.

[0020] In the diagram: 1. Washer; 2. Trapezoidal nut; 3. Spring; 4. Bolt. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-6 As shown, a bolt assembly for a square tube integrated system is provided. The bolt assembly consists of a bolt 4, a spring 3, a washer 1, and a trapezoidal nut 2. The bolt passes through the washer, the spring, and the trapezoidal nut in sequence. The trapezoidal nut has a threaded hole that mates with the bolt and a non-circular square neck structure. The bottom of the trapezoidal nut is provided with at least two anti-slip teeth. The spring is sleeved on the bolt and located between the washer and the trapezoidal nut.

[0022] Example 1: The bolt assembly consists of a bolt 4, a spring 3, a washer 1, and a trapezoidal nut 2. The bolt passes through the washer, spring, and trapezoidal nut in sequence. The trapezoidal nut has a threaded hole that mates with the bolt and a non-circular square neck structure. The square neck structure below the trapezoidal nut has a square cross-section and anti-slip teeth on both sides. The inner ring of the washer 1 is recessed for fitting the spring. The spring is fitted onto the bolt and is located between the washer and the trapezoidal nut.

[0023] Example 2: The bolt assembly consists of a bolt 4, a spring 3, a washer 1, and a trapezoidal nut 2. The bolt passes through the washer, spring, and trapezoidal nut in sequence. The trapezoidal nut has a threaded hole that mates with the bolt and a non-circular square neck structure. The square neck structure below the trapezoidal nut has a square cross-section and anti-slip teeth on both sides. The washer 1 has a recessed inner ring below and a square neck structure above. The square neck structure has a square cross-section and anti-slip teeth around its perimeter. The recessed inner ring is used to fit the spring. The spring is fitted onto the bolt and is located between the washer and the trapezoidal nut.

[0024] Figure 7 As shown: Square tubing is the main component, with rectangular holes pre-machined to standard on all four surfaces. Square tubing fittings are modularly designed according to structure and function, and are integrated with the square tubing for seamless installation. The bolt assembly is ready as per the technical specifications. Figure 7 As shown, the trapezoidal nut is tightened flat or slightly above the bolt head. During connection, the bolt assembly is inserted into the pre-machined bolt holes in the square tube and fittings. The bolt is pressed down by hand or a tool to compress the spring, as shown in the diagram. Figure 7 As shown on the left. Rotate the bolt 90 degrees so that the trapezoidal nut and the square tube bolt hole are at a 90-degree angle. Loosen the bolt. Under the spring tension, the square neck of the trapezoidal nut engages with the square tube bolt hole, maintaining a certain preload to prevent the entire bolt assembly from shifting. Figure 7 As shown on the right, tighten the bolts according to the specified torque requirements. Before final tightening, the bolts can be initially tightened by hand to increase efficiency.

[0025] The main function of the triangular anti-slip teeth is to prevent loosening. During the operation of the system, due to vibration and other reasons, the locked bolts and nuts may loosen or fall off. Under the action of locking force, the triangular teeth will get into the surface of the square tube and create grooves, generating a lot of friction and effectively preventing loosening.

[0026] The above descriptions are all preferred embodiments of this utility model. For those skilled in the art, any modifications to this utility model in various equivalent forms without departing from the principle of this utility model shall fall within the protection scope of the appended claims.

Claims

1. A bolt assembly for a square tube integrated system, characterized in that: The bolt assembly consists of a bolt, a spring, a washer, and a trapezoidal nut. The bolt passes through the washer, the spring, and the trapezoidal nut in sequence. The trapezoidal nut has a threaded hole that mates with the bolt and a non-circular square neck structure. The bottom of the trapezoidal nut has at least two anti-slip teeth. The spring is sleeved on the bolt and located between the washer and the trapezoidal nut.

2. A bolt assembly for a square tube integrated system according to claim 1, characterized in that: The washer has at least two anti-slip teeth on the side that contacts the square tube.

3. A bolt assembly for a square tube integrated system according to claim 1 or 2, characterized in that: The anti-slip teeth have a triangular tooth-shaped cross section.

4. A bolt assembly for a square tube integrated system according to claim 1 or 2, characterized in that: The inner ring of the washer is recessed for fitting a spring.

5. A bolt assembly for a square tube integrated system according to claim 1, characterized in that: The cross-section of the square neck structure of the trapezoidal nut is rectangular or square.

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