Nested bolt fastener

Abstract

The utility model relates to the technical field of bolt structures, and provides a nested bolt fastener which comprises a screw and a fastening mechanism. The reinforcing ring is fixed by arranging the lower limiting clamp and the lower limiting groove and matching the lower limiting clamp and the lower limiting groove, so that the reinforcing ring can only rotate clockwise and is prevented from loosening during anticlockwise rotation, and the connecting part can only rotate clockwise and is firmly fixed by arranging the upper limiting clamp and the upper limiting groove and matching the upper limiting clamp and the upper limiting groove. According to the invention, the screw is connected with the fixing sleeve to prevent loosening after connection, the supporting pad is arranged and jacks up the screw after the screw is tightened, so that the screw and the fixing sleeve are attached more tightly, the friction force is improved, the screw is prevented from loosening, the fixing groove, the positioning rope, the positioning pin and the positioning hole are arranged, the positioning rope is placed in the fixing groove, and then the positioning pin is inserted into the positioning hole to be fixed, so that the positioning rope is prevented from falling off; the fixing pin is arranged and connected with the outside, so that the fixing sleeve can be prevented from transversely and horizontally rotating, and the stability of the fixing sleeve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt structures, and specifically relates to a nested bolt fastener. Background Technique

[0002] The nested bolt fastener is an innovative fastening solution composed of inner and outer bolts. Its unique feature is that the inner bolt is pre-installed on the component, and the outer bolt is fastened through the inner bolt. This structure simplifies the assembly process and improves production efficiency while ensuring the stability and reliability of the connection. It is widely used in various fields such as machinery, equipment, and construction. With its convenient installation method, excellent seismic performance, and anti-loosening characteristics, the nested bolt fastener has become a favorite in modern industrial connection technology. Compared with traditional bolts, the nested bolt fastener shows significant advantages in enhancing structural safety and reducing maintenance costs and is an indispensable fastening element in modern engineering fields.

[0003] According to the search, the Chinese utility model publication number: CN218882731U discloses a nested bolt fastener. 1. In the utility model, the installation groove and the anti-slip groove are provided to better increase the friction between the threaded sleeve and the external hole body, which is convenient for better limiting the threaded sleeve and preventing its self-rotation. The installation groove is convenient for better limiting the sliding cover; 2. In the utility model, the anti-detachment pull rope is provided to prevent the slider from detaching from the limit box, which is convenient for better limiting the sliding cover. The limit box and the slider are provided to better limit the sliding cover. The sliding cover is provided to better limit the anti-slip piece, which is convenient for better fixing the threaded sleeve on the wall and convenient for better using the fastener.

[0004] However, when implementing the above technical solutions, some problems need to be considered: First, the stud of the fastener uses anti-sliding blocks to prevent the stud from slipping off, but after multiple uses, the anti-sliding blocks will be worn, resulting in a decrease in the effect. Second, the installation groove and the anti-slip groove are provided to better increase the friction between the threaded sleeve and the external hole body, but if the clamping is not tight, it will loosen and slide outwards. Content of the Utility Model

[0005] The purpose of the content of the utility model is to provide a nested bolt fastener to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A nested bolt fastener includes a screw rod and a fastening mechanism. A fastening mechanism is arranged on the outer side of the screw rod. A fixing sleeve is arranged on the outer side of the screw rod. A connecting part is arranged at the top of the screw rod. A reinforcing ring is arranged above the fixing sleeve. A fastening pad is arranged inside the reinforcing ring. A support pad is arranged inside the fixing sleeve.

[0007] Preferably, the connecting part and the fixing sleeve are of matching sizes. A hexagonal head is provided at the top of the connecting part, and a fixing groove is formed at the top of the hexagonal head.

[0008] Preferably, a positioning rope is arranged inside the fixing groove. One end of the positioning rope is connected to the reinforcing ring, and the other end of the positioning rope is connected to the positioning pin. The positioning pin and the reinforcing ring form a movable structure through the positioning hole.

[0009] Preferably, a lower limit clamp is arranged on the outer surface of the fastening pad. The lower limit clamp and the lower limit groove are of matching sizes, and the lower limit clamp and the reinforcing ring form a fixed structure through the lower limit groove.

[0010] Preferably, an upper limit clamp is arranged at the top end of the fastening pad. The upper limit clamp and the upper limit groove are of matching sizes, and the upper limit clamp and the connecting part form a fixed structure through the upper limit groove.

[0011] Preferably, the supporting pad is closely attached to the fixing sleeve. The supporting pad and the screw rod are of matching sizes, and the supporting pad is made of rubber material.

[0012] Preferably, fixing pins are arranged on the outer side of the fixing sleeve. A plurality of groups of fixing pins are provided, and the fixing pins are evenly distributed at the bottom of the reinforcing ring.

[0013] Preferably, a placing groove is arranged below the fixing pin, and a reinforcing rod is arranged inside the placing groove. The reinforcing rods are evenly distributed on the surface of the fixing sleeve.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] By arranging the lower limit clamp and the lower limit groove, the lower limit clamp and the lower limit groove cooperate to fix the reinforcing ring, enabling it to rotate only clockwise and preventing loosening when rotating counterclockwise. By arranging the upper limit clamp and the upper limit groove, the upper limit clamp and the upper limit groove cooperate to enable the connecting part to rotate only clockwise, firmly fixing the connecting part and preventing loosening after connection. By arranging the supporting pad, after tightening the screw rod, the supporting pad jacks up the screw rod, making the screw rod fit more closely with the fixing sleeve, increasing the friction force and preventing the screw rod from loosening. By arranging the fixing groove, the positioning rope, the positioning pin and the positioning hole, the positioning rope is placed in the fixing groove, and then the positioning pin is inserted into the positioning hole for fixation to prevent the positioning rope from falling off;

[0016] By arranging the fixing pins, the fixing pins are connected to the outside, which can prevent the fixing sleeve from rotating horizontally, improving the stability of the fixing sleeve. By arranging the placing groove and the reinforcing rods, when installing the fixing sleeve, the reinforcing rods are tightened into the placing groove under force, and when the fixing sleeve moves outwards, the reinforcing rods expand outwards to improve the stability. Description of the Drawings

[0017] Figure 1 This is a schematic diagram of the external structure of the present utility model.

[0018] Figure 2 This is a schematic diagram of the cooperation of the screw, connecting part and upper limit groove of the present utility model.

[0019] Figure 3 This is a schematic diagram of the cooperation of the fixing sleeve, reinforcing ring, fixing pin, placement groove and reinforcing rod of the present utility model.

[0020] Figure 4 This is a schematic diagram of the cooperation of the fastening pad, lower limit card and upper limit card of the present utility model.

[0021] Figure 5 This is a schematic diagram of the cooperation of the reinforcing ring, positioning hole, lower limit groove and support pad of the present utility model.

[0022] In the figure: 1, screw; 2, fastening mechanism; 201, fixing sleeve; 202, reinforcing ring; 203, connecting part; 204, hexagonal head; 205, fixing groove; 206, positioning rope; 207, positioning pin; 208, positioning hole; 209, fastening pad; 210, lower limit card; 211, lower limit groove; 212, upper limit card; 213, upper limit groove; 214, support pad; 215, fixing pin; 216, placement groove; 217, reinforcing rod. Specific embodiments

[0023] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0027] Please refer to Figures 1-5 , an embodiment provided by the present utility model: a nested bolt fastener, including a screw rod 1 and a fastening mechanism 2. The fastening mechanism 2 is arranged on the outer side of the screw rod 1. A fixing sleeve 201 is arranged on the outer side of the screw rod 1. A connecting portion 203 is arranged at the top of the screw rod 1. A reinforcing ring 202 is arranged above the fixing sleeve 201. A fastening pad 209 is arranged inside the reinforcing ring 202. A support pad 214 is arranged inside the fixing sleeve 201.

[0028] Specifically, the connecting portion 203 and the fixing sleeve 201 are of matching dimensions. A hexagonal head 204 is arranged at the top of the connecting portion 203. A fixing groove 205 is opened at the top of the hexagonal head 204. The wrench holds the hexagonal head 204 to install the screw rod 1 into the fixing sleeve 201.

[0029] Specifically, a positioning rope 206 is arranged inside the fixing groove 205. One end of the positioning rope 206 is connected to the reinforcing ring 202, and the other end of the positioning rope 206 is connected to a positioning pin 207. The positioning pin 207 and the reinforcing ring 202 form a movable structure through a positioning hole 208. Place the positioning rope 206 in the fixing groove 205, and then insert the positioning pin 207 into the positioning hole 208 for fixation to prevent the positioning rope 206 from falling off.

[0030] Specifically, a lower limit clamp 210 is arranged on the outer surface of the fastening pad 209. The lower limit clamp 210 and a lower limit groove 211 are of matching dimensions. The lower limit clamp 210 and the reinforcing ring 202 form a fixed structure through the lower limit groove 211. The lower limit clamp 210 and the lower limit groove 211 cooperate to fix the reinforcing ring 202 so that it can only rotate clockwise to prevent loosening when rotating counterclockwise.

[0031] Specifically, an upper limit card 212 is provided at the top of the fastening pad 209. The upper limit card 212 matches the size of the upper limit groove 213. The upper limit card 212 and the connecting part 203 form a fixed structure through the upper limit groove 213. The upper limit card 212 and the upper limit groove 213 cooperate to enable the connecting part 203 to rotate only clockwise, firmly fixing the connecting part 203 and preventing loosening after connection.

[0032] Specifically, the support pad 214 is closely attached to the fixed sleeve 201. The support pad 214 matches the size of the screw 1. The support pad 214 is made of rubber material. After tightening the screw 1, the support pad 214 jacks up the screw 1, making the screw 1 fit more closely with the fixed sleeve 201, increasing the friction and preventing the screw 1 from loosening.

[0033] Specifically, fixing pins 215 are provided on the outer side of the fixed sleeve 201. Multiple groups of fixing pins 215 are provided and are evenly distributed at the bottom of the reinforcing ring 202. The fixing pins 215 are connected to the outside world, which can prevent the fixed sleeve 201 from rotating horizontally and improve the stability of the fixed sleeve 201.

[0034] Specifically, a placement groove 216 is provided below the fixing pin 215. A reinforcing rod 217 is provided inside the placement groove 216. The reinforcing rods 217 are evenly distributed on the surface of the fixed sleeve 201. When installing the fixed sleeve 201, the reinforcing rods 217 are tightened into the placement groove 216 under force. When the fixed sleeve 201 moves outwards, the reinforcing rods 217 expand outwards to improve stability.

[0035] Working principle: First, install the fixed sleeve 201. When installing the fixed sleeve 201, the reinforcing rods 217 are tightened into the placement groove 216 under force. When the fixed sleeve 201 moves outwards, the reinforcing rods 217 expand outwards to improve stability. At the same time, the fixing pins 215 are connected to the outside world, which can prevent the fixed sleeve 201 from rotating horizontally and improve the stability of the fixed sleeve 201. Then, use a wrench to hold the hexagonal head 204 and install the screw 1 into the fixed sleeve 201. The support pad 214 jacks up the screw 1, making the screw 1 fit more closely with the fixed sleeve 201, increasing the friction and preventing the screw 1 from loosening. At the same time, the lower limit card 210 and the lower limit groove 211 cooperate to fix the reinforcing ring 202, enabling it to rotate only clockwise and preventing loosening when rotating counterclockwise. The upper limit card 212 and the upper limit groove 213 cooperate to enable the connecting part 203 to rotate only clockwise, firmly fixing the connecting part 203 and preventing loosening after connection. Finally, place the positioning rope 206 in the fixed groove 205, and then insert the positioning pin 207 into the positioning hole 208 to fix it, preventing the positioning rope 206 from falling off.

[0036] The above are only embodiments of the present utility model, and common knowledge such as specific structures and characteristics known in the solution is not described in detail herein. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A nested bolt fastener, comprising a screw rod (1) and a fastening mechanism (2), characterized in that: A fastening mechanism (2) is arranged on the outside of the screw rod (1), a fixing sleeve (201) is arranged on the outside of the screw rod (1), a connecting portion (203) is arranged on the top of the screw rod (1), a reinforcement ring (202) is arranged above the fixing sleeve (201), a fastening pad (209) is arranged inside the reinforcement ring (202), and a support pad (214) is arranged inside the fixing sleeve (201).

2. A nested bolt fastener according to claim 1, characterized in that: The connection portion (203) matches the size of the fixing sleeve (201); a hexagonal head (204) is provided on the top of the connection portion (203); and a fixing groove (205) is provided on the top of the hexagonal head (204).

3. A nested bolt fastener according to claim 2, characterized in that: A positioning rope (206) is provided inside the fixing groove (205); one end of the positioning rope (206) is connected to the reinforcement ring (202); the other end of the positioning rope (206) is connected to a positioning pin (207); and the positioning pin (207) forms a movable structure with the reinforcement ring (202) via a positioning hole (208).

4. A nested bolt fastener according to claim 1, characterized in that: The outer surface of the fastening pad (209) is provided with a lower limit card (210), the size of the lower limit card (210) matches the lower limit slot (211), and the lower limit card (210) forms a fixed structure with the reinforcement ring (202) through the lower limit slot (211).

5. The nested bolt fastener according to claim 1, characterized in that: An upper limit card (212) is provided at the top end of the fastening pad (209); the upper limit card (212) matches the size of the upper limit slot (213); and the upper limit card (212) forms a fixed structure with the connecting portion (203) via the upper limit slot (213).

6. A nested bolt fastener according to claim 1, characterized in that: The support pad (214) is tightly fitted with the fixing sleeve (201), the size of the support pad (214) matches that of the screw rod (1), and the support pad (214) is made of rubber.

7. The nested bolt fastener according to claim 1, characterized in that: The outer side of the fixing sleeve (201) is provided with fixing pins (215), and the fixing pins (215) are provided in multiple groups, and the fixing pins (215) are evenly distributed at the bottom of the reinforcement ring (202).

8. A nested bolt fastener according to claim 7, characterized in that: A placement groove (216) is provided below the fixing pin (215), and a reinforcing rod (217) is provided inside the placement groove (216). The reinforcing rod (217) is evenly distributed on the surface of the fixing sleeve (201).

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