Stable double-end bolt

Abstract

The utility model relates to the technical field of studs, and discloses a stable stud which comprises a stud body, threaded sections are arranged at the two ends of the stud body, guide grooves are oppositely formed in the two ends of the stud body, connecting rod pieces are arranged in the middles of the guide grooves, and reset springs are movably connected to the connecting rod pieces in a sleeved mode. A hexagonal notch is formed in the outer side of the guide groove in a communicating mode, and a reinforcing assembly is arranged in the hexagonal notch. The reinforcing assembly comprises a hexagonal clamping piece, the hexagonal clamping piece is connected to the connecting rod piece in a sleeving mode, a countersunk groove is formed in the outer side face of the hexagonal clamping piece, a limiting nut is arranged in the countersunk groove and connected to the connecting rod piece through threads, and a limiting clamping strip is arranged on the outer side of the hexagonal clamping piece in a clamped mode. According to the stud mounting and dismounting device, mounting and dismounting of the stud can be facilitated, and the mounting and dismounting efficiency of the stud is improved; and through the elastic action of the reset spring, vibration of the stud in the using process can be reduced, the using stability of the stud is further improved, and the stud is worthy of application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of double-headed bolts, in particular to a stable double-headed bolt. Background Technique

[0002] A double-headed bolt, also called a double-headed screw or a double-headed stud. It is used for the fixed connection function of machinery. Both ends of the double-headed bolt have threads, and the middle screw rod can be thick or thin. It is generally used in mining machinery, bridges, automobiles, motorcycles, boiler steel structures, tower cranes, large-span steel structures and large buildings, and also in speed reducers, etc.

[0003] For the existing double-headed bolt, since threaded surfaces are provided at both ends thereof, it is necessary to connect two workpieces or both ends of a workpiece. However, during the use of the double-headed bolt, if the supporting surface is uneven, the nut of the double-headed bolt will be inclined, resulting in a decrease in the stability after the nut is connected; and when installing or disassembling the double-headed bolt, a hexagonal nut needs to be used for assistance, and the hexagonal nut is threadedly connected to the double-headed bolt, increasing the installation and disassembly steps, which is not conducive to the installation and disassembly requirements of the double-headed bolt. In view of this, we propose a stable double-headed bolt. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a stable double-headed bolt to solve the problems raised in the above background technique that during the use of the double-headed bolt, if the supporting surface is uneven, the nut of the double-headed bolt will be inclined, resulting in a decrease in the stability after the nut is connected; and when installing or disassembling the double-headed bolt, a hexagonal nut needs to be used for assistance, and the hexagonal nut is threadedly connected to the double-headed bolt, increasing the installation and disassembly steps, which is not conducive to the installation and disassembly requirements of the double-headed bolt.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A stable double-headed bolt, including a bolt body, threaded segments are provided at both ends of the bolt body, guiding grooves are provided oppositely at both ends of the bolt body, a connecting rod member is provided in the middle of the guiding grooves, a return spring is movably sleeved on the connecting rod member, hexagonal notches are communicated and opened outside the guiding grooves, and a reinforcing component is provided inside the hexagonal notches;

[0006] The reinforcing component includes a hexagonal card member, the hexagonal card member is sleeved on the connecting rod member, a countersunk head groove is opened on the outer side surface of the hexagonal card member, a limit nut is provided inside the countersunk head groove, the limit nut is threadedly connected to the connecting rod member, a limit card strip is clamped on the outside of the hexagonal card member, and a guiding inclined surface is provided on the limit card strip.

[0007] Preferably, the centers of the bolt body and the connecting rod member are collinear, and the connecting rod member protrudes from the end of the bolt body on the corresponding side.

[0008] Preferably, the depth of the hexagonal notch is longer than the length of the hexagonal card.

[0009] Preferably, the return spring is arranged inside the guiding groove and on the inner side of the hexagonal card.

[0010] Preferably, the hexagonal card protrudes from the corresponding end of the bolt body.

[0011] Preferably, the length of the limiting strip is less than 1 / 2 of the length of the hexagonal card, and the limiting strip is arranged on the side of the hexagonal card.

[0012] Preferably, the guiding inclined surfaces are arranged in a circular shape in the same direction, and the longitudinal section of the limiting strip is a right trapezoid.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. For this stable double-headed bolt, by setting the reinforcement component, when installing the double-headed bolt, the hexagonal wrench is sleeved on the hexagonal card. At this time, through the structure of the hexagonal card and the bolt body itself and the limitation of the limiting strip, the rotational force of the wrench on the hexagonal card can be completely transferred to the bolt body, thereby facilitating the installation of the double-headed bolt. Similarly, it is convenient to disassemble the double-headed bolt.

[0015] 2. For this stable double-headed bolt, during the use of the double-headed bolt, when it is shaken, at this time, when the hexagonal card retracts into the hexagonal notch due to the shaking, it will compress the return spring. Through the elastic force of the return spring, the shaking during the use of the double-headed bolt can be reduced, and the use stability of the double-headed bolt is further improved, which is worthy of popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the utility model;

[0017] Figure 2 is a schematic semi-sectional structural diagram of the utility model;

[0018] Figure 3 is a schematic structural diagram of the reinforcement component of the utility model;

[0019] Figure 4 is the Figure 3 magnified schematic diagram at the M position of the utility model.

[0020] In the figure: 1. Bolt body; 2. Thread section; 3. Reinforcement component; 31. Hexagonal card; 32. Limiting strip; 33. Countersunk head groove; 34. Guiding inclined surface; 4. Guiding groove; 41. Hexagonal notch; 5. Connecting rod member; 6. Limiting nut; 7. Return spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment: Please refer to Figures 1 - 4 , the present utility model provides a technical solution: a stable double-headed bolt, mainly aiming at the problem that when the supporting surface is uneven during the use of the double-headed bolt, the nut of the double-headed bolt will tilt, resulting in a decrease in the stability after the nut is connected; and when installing or disassembling the double-headed bolt, a hexagonal nut needs to be used for assistance, and the hexagonal nut is threadedly connected to the double-headed bolt, which increases the installation and disassembly steps and is not conducive to the installation and disassembly requirements of the double-headed bolt. The specific solution is as follows: It includes a bolt body 1, threaded segments 2 are provided at both ends of the bolt body 1, guiding grooves 4 are oppositely arranged at both ends of the bolt body 1, a connecting rod member 5 is arranged in the middle of the guiding groove 4, a return spring 7 is movably sleeved on the connecting rod member 5, the return spring 7 is arranged inside the guiding groove 4, and the return spring 7 is arranged inside the hexagonal clamping member 31. The return spring 7 can facilitate improving the seismic effect of the double-headed bolt, making the installation and disassembly of the double-headed bolt more convenient and with higher efficiency.

[0023] Please refer to Figure 1 and Figure 2 , wherein, a hexagonal slot 41 is communicated and opened on the outer side of the guiding groove 4, and a reinforcing component 3 is arranged inside the hexagonal slot 41; the opening of the hexagonal slot 41 can prevent the reinforcing component 3 from rotating relative to the bolt body 1.

[0024] Please refer to Figures 2 - 4 , wherein, the reinforcing component 3 includes a hexagonal clamping member 31, and the hexagonal clamping member 31 protrudes from the corresponding end of the bolt body 1. The groove depth of the hexagonal slot 41 is longer than the length of the hexagonal clamping member 31. By making the depth of the hexagonal slot 41 longer than that of the hexagonal clamping member 31, it is convenient for the movement of the hexagonal clamping member 31. Through the sliding of the hexagonal clamping member 31, it is convenient to squeeze the return spring 7. Through the elastic action of the return spring 7, the seismic effect of the double-headed bolt is significantly improved.

[0025] Furthermore, the hexagonal clamping member 31 is sleeved on the connecting rod member 5, a countersunk head groove 33 is opened on the outer side surface of the hexagonal clamping member 31, and a limiting nut 6 is arranged inside the countersunk head groove 33. The limiting nut 6 is threadedly connected to the connecting rod member 5. The countersunk head groove 33 can facilitate the placement of the limiting nut 6 and prevent the limiting nut 6 from protruding from the hexagonal clamping member 31, which is not convenient for operation when the wrench is clamped on the hexagonal clamping member 31.

[0026] In this embodiment, a limiting card strip 32 is clamped and arranged outside the hexagonal card member 31. The length of the limiting card strip 32 is less than 1 / 2 of the length of the hexagonal card member 31, and the limiting card strip 32 is arranged on the side surface of the hexagonal card member 31. Among them, the material of the limiting card strip 32 is silicone rubber. Through the setting of the silicone rubber, the relative rotation of the hexagonal card member 31 and the bolt body 1 can be further restricted.

[0027] Furthermore, a guiding inclined surface 34 is arranged on the limiting card strip 32. The guiding inclined surfaces 34 are arranged in a circular shape in the same direction, and the longitudinal section of the limiting card strip 32 is a right trapezoid. The centers of the bolt body 1 and the connecting rod member 5 are collinear, and the connecting rod member 5 protrudes from the end of the bolt body 1 on the corresponding side. Due to the setting of the guiding inclined surface 34, during the forward rotation operation of the bolt, through the restriction of the structures of the hexagonal card member 31 and the bolt body 1 itself and the limiting card strip 32, the rotational force of the wrench on the hexagonal card member 31 can be completely transferred to the bolt body 1. Therefore, when the bolt is fixedly installed and disassembled, there is no need to install other components on the double-headed bolt, and it can be easily operated.

[0028] Working principle: When installing this stable double-headed bolt, by sleeving a hexagonal wrench on the hexagonal card member 31, at this time, through the restriction of the structures of the hexagonal card member 31 and the bolt body 1 itself and the limiting card strip 32, the rotational force of the wrench on the hexagonal card member 31 can be completely transferred to the bolt body 1, thus facilitating the installation of the double-headed bolt; similarly, by operating in the reverse direction, the disassembly of the double-headed bolt can be facilitated; during the use of the double-headed bolt (applied in a speed reducer), when the vibration causes the hexagonal card member 31 to retract into the hexagonal notch 41, it will compress the return spring 7. Through the elastic force of the return spring 7, the vibration during the use of the double-headed bolt can be reduced, and the use stability of the double-headed bolt is further improved, which is worthy of popularization and use.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable stud bolt, comprising a bolt body (1), and threaded sections (2) are provided at both ends of the bolt body (1), characterized in that: The two ends of the bolt body (1) are provided with guiding grooves (4) facing each other. A connecting rod member (5) is arranged in the middle of the guiding groove (4). A return spring (7) is movably sleeved on the connecting rod member (5). A hexagonal notch (41) is communicated and opened outside the guiding groove (4). A reinforcement component (3) is arranged inside the hexagonal notch (41). The reinforcement component (3) includes a hexagonal clamping member (31). The hexagonal clamping member (31) is sleeved on the connecting rod member (5). A countersunk head groove (33) is formed on the outer side surface of the hexagonal clamping member (31). A limit nut (6) is arranged inside the countersunk head groove (33). The limit nut (6) is threadedly connected to the connecting rod member (5). A limit clamping strip (32) is clamped and arranged on the outer side of the hexagonal clamping member (31). A guiding inclined surface (34) is arranged on the limit clamping strip (32).

2. The stable double-headed bolt according to claim 1, characterized in that: The centers of the bolt body (1) and the connecting rod member (5) are collinear, and the connecting rod member (5) protrudes from the end of the corresponding side of the bolt body (1).

3. A stable double-headed bolt according to claim 1, characterized in that: The groove depth of the hexagonal notch (41) is longer than the length of the hexagonal clamping member (31).

4. A stable double-headed bolt according to claim 1, characterized in that: The return spring (7) is arranged inside the guiding groove (4), and the return spring (7) is arranged inside the hexagonal clamping member (31).

5. A stable double-headed bolt according to claim 1, characterized in that: The hexagonal clamping member (31) protrudes from the corresponding end of the bolt body (1).

6. A stable double-headed bolt according to claim 1, characterized in that: The length of the limit clamping strip (32) is less than 1 / 2 of the length of the hexagonal clamping member (31), and the limit clamping strip (32) is arranged on the side surface of the hexagonal clamping member (31).

7. A stable double-headed bolt according to claim 1, characterized in that: The guiding inclined surfaces (34) are annularly arranged in the same direction, and the longitudinal section of the limit clamping strip (32) is a right trapezoid.

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