Anti-falling bolt and nut assembly connecting structure

Abstract

The utility model belongs to the technical field of machine manufacturing, and relates to an anti-falling bolt and nut assembly connecting structure. The device comprises an automatic bolt feeding and conveying component (A) and a bolt heating component (B), the automatic bolt feeding and conveying component (A) comprises a conveying channel (1) and a compressed air supply pipeline (2), the compressed air supply pipeline (2) is arranged at one end of a channel inlet (3) of the conveying channel (1), and the bolt heating component (B) is arranged at one end, close to a channel outlet (4), of the conveying channel (1). The anti-falling bolt and nut assembly connecting structure is simple in structure, automatic feeding and heating of bolts are achieved, pre-tightening force is achieved after bolt and nut assemblies are connected, and the anti-falling performance of nuts is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical manufacturing technology, and more specifically, it relates to a bolt and nut assembly connection structure that prevents loosening. Background Technology

[0002] Bolt and nut assemblies play a crucial role in mechanical equipment. Common methods for preventing loosening mainly fall into three categories: friction locking, mechanical locking, and permanent locking. 1. Friction Locking: Spring Washer Locking: The friction generated by a spring washer prevents the bolt from loosening. Alternating Nut Locking: The design of opposing nuts creates a locking force between them, preventing loosening. Self-Locking Nut Locking: The special construction of self-locking nuts allows them to lock themselves after tightening, preventing loosening. Elastic Ring Nut Locking: The elastic ring forms an elastic ring between the nut and bolt, increasing friction and preventing loosening. 2. Mechanical Locking: Grooved Nuts and Cotter Pin Locking: Grooves are cut into the nut, and a cotter pin is inserted through the groove to form a mechanical lock. Round Nuts and Locking Washers: Round nuts used with locking washers prevent the nut from rotating after tightening. Locking Washers: The design of locking washers prevents relative movement between the nut and bolt after tightening. 1. Series-connected steel wire anti-loosening: By passing multiple steel wires through multiple holes in the bolt in series, the difficulty of loosening is increased. 2. Permanent anti-loosening: 3. Edge punching anti-loosening: A special shape is punched into the bolt head or nut edge to change its geometry, thereby achieving permanent anti-loosening. 4. Adhesive anti-loosening: Special adhesives are used to bond the bolt and nut together to form a permanent connection. The above are common anti-loosening methods for bolts, each with its specific application scenarios and advantages. High-strength bolts are widely used, especially in pressure vessels, aerospace, and nuclear power fields, where they withstand high pressure, low temperature, and radiation, and have higher requirements. Compared with ordinary bolt connections, high-strength bolt connections are not only easier to construct and replaceable, but also have the advantages of good load-bearing performance, good vibration resistance, and high connection strength. However, high-strength bolts require loosening. If the bolts loosen, it will affect the reliability of the equipment, causing serious safety hazards or shortening the connection life. Current technologies for bolt feeding, conveying, and installation are also relatively complex and cannot effectively meet the requirements.

[0003] There is a prior art technology entitled "A Bolt Kit and its Connection Anti-Loosening Method" with publication (announcement) number "WO2021128574A1". This technology has a bolt kit and its connection anti-loosening method. The bolt (1) has a heating hole on the top for heating or reducing the temperature of the bolt (1), and the top of the bolt (1) is also provided with a cap (4) and an anti-loosening device (5). When using the bolt (1) kit, the bolt (1) and nut (2) are tightened by the principle of thermal expansion and contraction to prevent the connection from loosening. This solution ensures that the bolt (1) and nut (2) are subjected to uniform force and will not cause permanent damage. Disassembly also utilizes the principle of thermal expansion and contraction. Heating makes it expand for easy disassembly, which has the technical effect of easy installation and disassembly and uniform force distribution. This technology does not involve the technical solution of this application. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a bolt and nut assembly connection structure that is simple in structure, realizes automatic feeding and heating of bolts, realizes pre-tightening force after bolt and nut assembly connection, and effectively improves anti-loosening performance, in order to overcome the shortcomings of the existing technology.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model is a bolt and nut assembly connection structure for preventing detachment, including an automatic bolt feeding and conveying component and a bolt heating component. The automatic bolt feeding and conveying component includes a conveying channel and a compressed air supply pipeline. The compressed air supply pipeline is located at one end of the inlet of the conveying channel, and the bolt heating component is located at one end of the conveying channel near the outlet.

[0007] The bolt heating component includes a heating coil.

[0008] The heating coil is wound around the outer ring of the conveying channel.

[0009] The bolt and nut assembly includes a bolt and a nut.

[0010] The first component and the second component to be fastened are located near the outlet of the conveying channel.

[0011] The first component of the part to be fastened is provided with a first mounting hole, and the second component of the part to be fastened is provided with a second mounting hole.

[0012] The conveying channel is equipped with a bolt loading port at one end near the channel inlet.

[0013] The first mounting hole is aligned with the second mounting hole.

[0014] The outlet of the conveying channel is configured to align with the first mounting hole and the second mounting hole.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] The anti-loosening bolt and nut assembly connection structure of this utility model includes an automatic bolt feeding and conveying component and a bolt heating component. The automatic bolt feeding and conveying component feeds and conveys the bolts to be connected, sending them into the conveying channel. A compressed air supply line is located at the inlet of the conveying channel, applying a thrust to the bolt as it enters the channel. The bolt moves along the conveying channel from the inlet to the outlet, eventually being fed into the mounting hole of the component to be fastened. This achieves automatic bolt feeding, eliminating the need for manual feeding and improving feeding convenience. The bolt heating component is located near the outlet of the conveying channel. During the conveying process, the bolt passes through the bolt heating component, which heats it. After heating, the bolt lengthens before being fed into the mounting hole of the component to be fastened. The thickness of the component remains unchanged, while the increased bolt length facilitates the tightening of the nut. As the bolt cools, it shortens, ensuring a reliable connection between the bolt and nut. This achieves high preload in the bolt and nut assembly, thus preventing the nut from falling off. Attached Figure Description

[0017] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0018] Figure 1 This is a schematic diagram of the anti-loosening bolt and nut assembly connection structure of the present invention;

[0019] The labels in the attached diagram are as follows: A, Automatic bolt feeding and conveying component; B, Bolt heating component; 1, Conveying channel; 2, Compressed air supply pipeline; 3, Channel inlet; 4, Channel outlet; 5, Heating coil; 6, Bolt; 7, Nut; 8, First assembly of component to be fastened; 9, Second assembly of component to be fastened; 10, First mounting hole; 11, Second mounting hole; 12, Bolt feeding port. Detailed Implementation

[0020] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0021] As attached Figure 1As shown, this utility model is a bolt and nut assembly connection structure to prevent detachment, including an automatic bolt feeding and conveying component A and a bolt heating component B. The automatic bolt feeding and conveying component A includes a conveying channel 1 and a compressed air supply pipeline 2. The compressed air supply pipeline 2 is located at one end of the channel inlet 3 of the conveying channel 1, and the bolt heating component B is located at one end of the conveying channel 1 near the channel outlet 4. To address the shortcomings of the prior art, an improved technical solution is proposed. In this structure, the automatic bolt feeding and conveying component A and the bolt heating component B are respectively set. The automatic bolt feeding and conveying component A is used for feeding and conveying the bolts to be connected. During feeding, the bolts are sent into the conveying channel 1. The compressed air supply pipeline 2 is located at the channel inlet 3 of the conveying channel. Through the supply of compressed air, a thrust is applied to the bolts 6 sent into the conveying channel 1. The bolts 6 move along the conveying channel 1 from one end of the channel inlet 3 towards the channel outlet 4, and can then be fed into the mounting hole of the component to be fastened, realizing automatic bolt feeding without manual feeding and improving feeding convenience. Bolt heating component B is located at one end of the conveying channel 1 near the channel outlet 4. During the conveying process, the bolt passes through bolt heating component B, which heats the bolt. After heating, the bolt lengthens and is then fed into the mounting hole of the component to be fastened. The thickness of the component to be fastened remains unchanged. The increased length of the bolt 6 facilitates the tightening of the nut 7. After cooling, the bolt 6 shortens, ensuring a reliable connection between the bolt 6 and the nut 7. This achieves a high preload on the bolt-nut assembly, thus preventing the nut 7 from falling off. The anti-loosening bolt-nut assembly connection structure described in this invention is simple in structure, automatically feeds and heats the bolt, achieves the preload after the bolt-nut assembly is connected, and effectively improves the nut's anti-loosening performance.

[0022] The bolt heating component B includes a heating coil 5. In this structure, the heating coil 5 extends a certain distance along the outer ring of the conveying channel 1, which can heat the bolt 6 passing through the inner ring of the conveying channel 1, and ensure high-efficiency heating, thereby achieving bolt heating and lengthening.

[0023] The heating coil 5 is wound around the outer ring of the conveying channel 1. In this structure, the winding and extension distance of the heating coil 5 can be set according to actual needs, and the heating coil 5 can be connected to a power source. A switch is also provided to control the on / off state of the heating coil 5, thus enabling the use and control of the heating coil 5.

[0024] The bolt and nut assembly includes a bolt 6 and a nut 7. In the above structure, the bolt 6 and nut 7 of the same bolt and nut assembly are used together to achieve a reliable combined connection.

[0025] A first component assembly 8 and a second component assembly 9 to be fastened are positioned near the channel outlet 4 of the conveying channel 1. The first component assembly 8 has a first mounting hole 10, and the second component assembly 9 has a second mounting hole 11. In this structure, the first component assembly 8 and the second component assembly 9 represent components that need to be connected by a bolt and nut assembly. When connecting the components using the bolt and nut assembly, the bolt 6 passes sequentially through the first mounting hole 10 on the first component assembly 8 and the second mounting hole 11 on the second component assembly 9, and then the nut 7 is screwed onto the other end of the bolt to complete the connection.

[0026] The conveying channel 1 is provided with a bolt feeding port 12 near the channel inlet 3. With the above structure, as long as the bolts 6 fall from the bolt feeding port 12 at a set frequency, the compressed air can generate thrust, pushing the bolts 6 to move along the conveying channel, thereby realizing automatic bolt conveying.

[0027] The first mounting hole 10 is aligned with the second mounting hole 11. The channel outlet 4 of the conveying channel 1 is configured to align with the first mounting hole 10 and the second mounting hole 11. With this configuration, after the bolt 6 exits from the channel outlet 4, it can be manually removed and fed into the first mounting hole 10 and the second mounting hole 11, followed by manual tightening of the nut 7 to complete the connection of the bolt and nut assembly to the fastening component. Alternatively, under the thrust of compressed air, the bolt 6 is automatically fed from the channel outlet 4 at a set angle into the first mounting hole 10 and the second mounting hole 11, achieving automatic installation. Then, a robotic arm or other components automatically tighten the nut 7. The installed fastening component is transferred to the next stage by a conveyor belt or other components, and then the feeding, conveying, heating, and installation of another bolt with a fastening component begins, improving the level of automation.

[0028] The bolt and nut assembly connection structure for preventing detachment described in this utility model includes an automatic bolt feeding and conveying component A and a bolt heating component B. The automatic bolt feeding and conveying component A is used for feeding and conveying the bolts to be connected. During feeding, the bolts are sent into the conveying channel 1. The compressed air supply line 2 is located at the channel inlet 3 of the conveying channel. Through the supply of compressed air, a thrust is applied to the bolts 6 fed into the conveying channel 1. The bolts 6 move along the conveying channel 1 from one end of the channel inlet 3 towards the channel outlet 4, and are then fed into the mounting hole of the component to be fastened. This achieves automatic bolt feeding, eliminating the need for manual feeding and improving feeding convenience. The bolt heating component B is located at the end of the conveying channel 1 near the channel outlet 4. During the conveying process within the conveying channel, the bolts pass through the bolt heating component B, which heats the bolts. After the bolt is heated, its length increases, and it is then inserted into the mounting hole of the part to be fastened. The thickness of the part to be fastened does not change. When the bolt 6 becomes longer, it is easier to tighten and install the nut 7. After the bolt 6 cools down, it will shorten, so that the bolt 6 and the nut 7 are reliably connected, achieving a high preload of the bolt and nut assembly, thereby preventing the nut 7 from falling off.

[0029] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A non-loosening bolt-nut assembly connection structure characterized by: It includes an automatic bolt feeding and conveying component (A) and a bolt heating component (B). The automatic bolt feeding and conveying component (A) includes a conveying channel (1) and a compressed air supply pipeline (2). The compressed air supply pipeline (2) is located at one end of the channel inlet (3) of the conveying channel (1), and the bolt heating component (B) is located at one end of the conveying channel (1) near the channel outlet (4).

2. The anti-loosening bolt-nut assembly connection structure according to claim 1, characterized by: The bolt heating component (B) includes a heating coil (5).

3. The anti-loosening bolt-nut assembly connection structure according to claim 2, characterized by: The heating coil (5) is wound around the outer ring of the conveying channel (1).

4. The anti-loosening bolt-nut assembly connection structure according to claim 1 or 2, characterized by: The bolt and nut assembly includes a bolt (6) and a nut (7).

5. The anti-loosening bolt and nut assembly connection structure according to claim 1 or 2, characterized in that: The first component (8) and the second component (9) to be fastened are set at the channel outlet (4) near the conveying channel (1).

6. The anti-loosening bolt-nut assembly connection structure according to claim 5, characterized by: The first component (8) to be fastened is provided with a first mounting hole (10), and the second component (9) to be fastened is provided with a second mounting hole (11).

7. The anti-loosening bolt-nut assembly connection structure according to claim 1 or 2, characterized by: The conveying channel (1) is provided with a bolt loading port (12) at one end near the channel inlet (3).

8. The anti-loosening bolt-nut assembly connection structure according to claim 6, characterized by: The first mounting hole (10) is aligned with the second mounting hole (11).

9. The anti-loosening bolt-nut assembly connection structure according to claim 6, characterized by: The channel outlet (4) of the conveying channel (1) is configured to be aligned with the first mounting hole (10) and the second mounting hole (11).

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