Special-shaped bolt fastener

Abstract

The utility model relates to the technical field of bolt fasteners, in particular to a special-shaped bolt fastener which comprises a fixing workpiece, a plug and an assisting assembly, the plug is installed inside the fixing workpiece, the surface of the plug is in threaded connection with a nut, a gasket is installed on the upper surface of the nut and makes contact with the lower surface of the fixing workpiece, and the assisting assembly is installed on the fixing workpiece. The assisting assembly is arranged on the inner wall of the plug; the assisting assembly comprises a binding unit, the binding unit comprises a force bearing plate, a mounting cavity is formed in the surface of the inserting bolt, the force bearing plate is slidably connected with the inner wall of the mounting cavity, a guide plate is fixedly connected to the surface of the force bearing plate, and a clamping pin is fixedly connected to the side surface of the force bearing plate. According to the fastening piece, the stability of the fastening piece in the locking state is improved through the arrangement of the assisting assembly, then the problem that the fastening piece is prone to loosening when the fastening piece is vibrated is solved, and the locking effect of the fastening piece is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt fasteners, in particular to a special-shaped bolt fastener. Background Art

[0002] Special-shaped bolts are bolt fasteners with special shapes. Compared with traditional standard bolts, special-shaped bolts have more unique shapes and are usually designed according to specific usage requirements and installation environments. They may have irregular head shapes, special thread structures or non-standard rod shapes. Special-shaped bolts play an important role in some special mechanical equipment, building structures or industrial fields, and can meet specific connection and fastening requirements. Due to their particularity, the production of special-shaped bolts usually requires more sophisticated processing technology and techniques to ensure their dimensional accuracy and quality stability. When using special-shaped bolts, it is necessary to select appropriate installation tools and methods according to their characteristics to ensure the firmness and reliability of the installation.

[0003] The prior art includes the utility model with publication number CN218235785U, which discloses a special-shaped bolt fastener. The patent adopts a to-be-fixed piece and a bolt body, the to-be-fixed piece is connected with the bolt body through an insertion, the bottom end of the bolt body is threadedly connected with a nut, the surface of the bolt body is provided with a groove, the groove is engaged with a rubber sleeve, the rubber sleeve is engaged with the through hole, and the top of the bolt body is interlaced with a washer; the utility model can shrink the arc rack by pulling the square rod by the protrusion, which is convenient for inserting the bolt body and will not hinder the installation activity of the bolt body; by tightening the nut on the external thread at the bottom end of the bolt body, the bolt body can be positioned, and the bolt body can fix the to-be-fixed piece on the high-speed railway track, solving the problem that the bolt can be reinforced by the clamping positioning piece and preventing the bolt main structure from loosening and shaking, but the clamping positioning piece needs to be clamped at the bottom of the bolt main structure, which occupies more space at the bottom of the bolt main structure. When the gap at the bottom end of the to-be-fixed piece is small, it is inconvenient to place the clamping positioning piece, and the operation is difficult.

[0004] In the process of fixing workpieces with the help of special-shaped bolt fasteners, there is a problem that most special-shaped bolt fasteners currently available on the market have a relatively simple structure and only rely on the cooperation of nuts and bolts to achieve the fastening effect. When the fasteners are used in structures under a vibrating environment, since the structure is in a vibrating state for a long time and the fasteners are in contact with the structure, the fasteners will become loose under the action of vibration, which will then lead to a reduction in the fixing effect of the fasteners. Summary of the Invention

[0005] The purpose of the utility model is to solve the shortcomings in the prior art that the structure is in a vibrating state for a long time and the fastener is in contact with the structure, so that the fastener will loosen under the action of vibration, which in turn leads to a reduction in the fixing effect of the fastener, and to propose a special-shaped bolt fastener.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: a special-shaped bolt fastener, comprising a fixed workpiece, a plug, and an assisting assembly, wherein the plug is installed inside the fixed workpiece, a nut is threadedly connected to the surface of the plug, a washer is installed on the upper surface of the nut, and the washer contacts the lower surface of the fixed workpiece, and the assisting assembly is arranged on the inner wall of the plug;

[0007] The assisting assembly includes a restraining unit, the restraining unit includes a force-carrying plate, a mounting cavity is formed on the surface of the plug, the force-carrying plate is slidably connected to the inner wall of the mounting cavity, a guide plate is fixedly connected to the surface of the force-carrying plate, a latch is fixedly connected to the side surface of the force-carrying plate, a compression spring is fixedly connected to the side of the force-carrying plate away from the latch, the compression spring is fixedly connected to the inner wall of the mounting cavity, a slot is formed on the inner wall of the fixed workpiece, and the latch is plugged into the inner wall of the slot;

[0008] The assist component also includes an auxiliary unit, which includes a pressure plate, a connecting cavity is provided on the upper surface of the plug, the pressure plate is installed inside the connecting cavity, a limiting hole is provided on the surface of the pressure plate, the inner wall of the pressure plate located in the limiting hole is threadedly connected with a fixing bolt, the inner wall of the plug located in the connecting cavity is provided with a threaded groove, the fixing bolt is threadedly connected to the inner wall of the threaded groove, a sealing ring is fixedly connected to the lower surface of the pressure plate, a connecting frame is fixedly connected to the lower surface of the pressure plate, a guide block is slidably connected to the inner wall of the connecting frame, a square column is fixedly connected to the outer circumference of the guide block, an arc groove is provided on the side surface of the square column, and the connecting frame contacts the inner wall of the arc groove.

[0009] Preferably, the guide plate is arranged at an angle relative to the load-bearing plate, and is slidingly connected to the inner wall of the mounting cavity. The guide plate can form a bend above the load-bearing plate, thereby facilitating the staff to adjust the state of the load-bearing plate when removing the fasteners.

[0010] Preferably, the bayonet passes through the surface of the plug, and there are two bayonet pins, which are symmetrically arranged with respect to the plug on the left and right. The number of the compression springs is two, and the two compression springs are symmetrically arranged with respect to the force-loading plate on the top and bottom. The bayonet pin can limit the position of the plug in the installed state under the constraint of the compression spring and the force-loading plate.

[0011] Preferably, the connecting cavity is connected to the inner wall of the installation cavity, the fixing bolt passes through the lower surface of the pressure plate, and the sealing ring contacts the inner wall of the connecting cavity. The sealing ring can increase the sealing between the pressure plate and the connecting cavity to reduce the probability of the medium penetrating into the connecting cavity.

[0012] Preferably, there are two connecting frames, which are symmetrically arranged about the pressure plate. The number of the guide blocks matches the connecting frames. The connecting frames and the square columns can be connected through the guide blocks, and the square columns can be rotated around the connecting frames.

[0013] Preferably, there are two square columns, which are symmetrically arranged about the pressure plate. The square columns are interference fit with the lower surface of the pressure plate, and the square columns are plugged into the inner wall of the connecting cavity. The lower end of the square column is located inside the installation cavity, and the square column is in contact with the surface of the guide plate. By adjusting the position of the square column, the square column can limit the position of the guide plate, or squeeze the guide plate under the operation of the staff.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] When the locking bolt is fully engaged, the locking pin is rotated clockwise, and the locking pin is gradually screwed into the threaded groove. When the locking pin is tightened, the position of the pressing plate can be locked, and the limiting operation of the position of the bolt can be completed. The nut and the washer are tightened to the surface of the plug. After the nut is tightened, the nut is welded under the fixed workpiece. When the plug needs to be disassembled, the fixing bolt is rotated counterclockwise to disengage the fixing bolt from the thread groove. When the pressure plate loses the lock of the fixing bolt, the fixing bolt is pulled, and the fixing bolt pulls the pressure plate. The pressure plate pulls the square column under the cooperation of the connecting frame and the guide block, and the square column is pulled out of the connecting cavity. Then, the square columns on both sides are rotated so that the inclined surfaces of the square columns on both sides are opposite. After the adjustment of the square columns is completed, the pressure plate is realigned with the connecting cavity, and the pressure plate is pushed. The pressure plate pushes the square column. The square column hits the surface of the guide plate during the movement and continues to squeeze the guide plate under the action of the pressure plate. The guide plate squeezes the load plate under the action of the square column. The load plate pulls the latch pin under force and squeezes the compression spring. The latch pin is pulled out of the slot, and the plug can be disassembled. By providing the auxiliary component, the stability of the fastener in the locked state is improved, thereby reducing the problem that the fastener is prone to loosening when the fastener is subjected to vibration, and further improving the locking effect of the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a three-dimensional structural diagram of a special-shaped bolt fastener;

[0017] Figure 2 The utility model provides a cross-sectional structural diagram of a special-shaped bolt fastener;

[0018] Figure 3 This is a partial structural diagram of a special-shaped bolt fastener proposed by the utility model;

[0019] Figure 4 The utility model proposes a special-shaped bolt fastener Figure 3 Schematic diagram of the structure at A in the middle;

[0020] Figure 5 The utility model provides a schematic diagram of the auxiliary component structure of a special-shaped bolt fastener;

[0021] Figure 6 The utility model provides a partial structural diagram of an auxiliary component of a special-shaped bolt fastener;

[0022] Figure 7 The utility model provides a schematic structural diagram of a guide block of a special-shaped bolt fastener.

[0023] Legend:

[0024] 1. Fix the workpiece; 2. Plug; 3. Nut; 4. Gasket; 5. Auxiliary component; 51. Constraint unit; 511. Mounting cavity; 512. Load plate; 513. Guide plate; 514. Pin; 515. Compression spring; 516. Slot; 52. Auxiliary unit; 521. Connecting cavity; 522. Pressure plate; 523. Fixing bolt; 524. Sealing ring; 525. Connecting frame; 526. Guide block; 527. Square column. DETAILED DESCRIPTION

[0025] See also Figure 1-Figure 7 The utility model provides a technical solution: a special-shaped bolt fastener, including a fixed workpiece 1, a plug 2 and an auxiliary component 5, the plug 2 is installed inside the fixed workpiece 1, the surface of the plug 2 is threadedly connected with a nut 3, the upper surface of the nut 3 is installed with a gasket 4, the gasket 4 is in contact with the lower surface of the fixed workpiece 1, and the auxiliary component 5 is arranged on the inner wall of the plug 2.

[0026] In this embodiment, the assisting assembly 5 includes a restraining unit 51, which includes a force-carrying plate 512. A mounting cavity 511 is formed on the surface of the plug 2. The force-carrying plate 512 is slidably connected to the inner wall of the mounting cavity 511. A guide plate 513 is fixedly connected to the surface of the force-carrying plate 512. A latch 514 is fixedly connected to the side surface of the force-carrying plate 512. A compression spring 515 is fixedly connected to the side of the force-carrying plate 512 away from the latch 514. The compression spring 515 is fixedly connected to the inner wall of the mounting cavity 511. A slot 516 is formed on the inner wall of the fixed workpiece 1. The latch 514 is plugged into the inner wall of the slot 516.

[0027] The assisting assembly 5 also includes an auxiliary unit 52, which includes a pressure plate 522. A connecting cavity 521 is provided on the upper surface of the plug 2. The pressure plate 522 is installed inside the connecting cavity 521. A limiting hole is provided on the surface of the pressure plate 522. The pressure plate 522 is located on the inner wall of the limiting hole and is threadedly connected to a fixing bolt 523. The plug 2 is located on the inner wall of the connecting cavity 521 and is threadedly connected to the fixing bolt 523. A sealing ring 524 is fixedly connected to the lower surface of the pressure plate 522. A connecting frame 525 is fixedly connected to the lower surface of the pressure plate 522. A guide block 526 is slidably connected to the inner wall of the connecting frame 525. A square column 527 is fixedly connected to the outer circumference of the guide block 526. An arc groove is provided on the side surface of the square column 527. The connecting frame 525 contacts the inner wall of the arc groove.

[0028] Specifically, the guide plate 513 is inclined relative to the load-bearing plate 512, and the guide plate 513 is slidably connected to the inner wall of the installation cavity 511. The guide plate 513 can form a bend above the load-bearing plate 512, thereby facilitating the staff to adjust the state of the load-bearing plate 512 when removing the fasteners.

[0029] Specifically, the bayonet 514 passes through the surface of the plug 2 . There are two bayonet pins 514 , which are symmetrically arranged with respect to the plug 2 . There are two compression springs 515 , which are symmetrically arranged with respect to the load plate 512 .

[0030] In this embodiment, the position of the plug 2 in the installed state can be restricted by the locking pin 514 under the restraint of the compression spring 515 and the load-bearing plate 512 .

[0031] Specifically, the connecting cavity 521 is connected to the inner wall of the installation cavity 511, the fixing bolt 523 passes through the lower surface of the pressure plate 522, and the sealing ring 524 contacts the inner wall of the connecting cavity 521. The sealing ring 524 can increase the sealing between the pressure plate 522 and the connecting cavity 521 to reduce the probability of the medium penetrating into the connecting cavity 521.

[0032] In this embodiment, there are two connecting frames 525 , which are symmetrically arranged with respect to the pressing plate 522 , and the number of the guide blocks 526 matches that of the connecting frames 525 .

[0033] In this embodiment, the connecting frame 525 and the square column 527 can be connected by the guide block 526 , and the square column 527 can be rotated around the connecting frame 525 .

[0034] Specifically, there are two square columns 527, and the two square columns 527 are symmetrically arranged about the pressure plate 522. The square columns 527 are interference fit with the lower surface of the pressure plate 522, and the square columns 527 are plugged into the inner wall of the connecting cavity 521. The lower end of the square column 527 is located inside the installation cavity 511, and the square column 527 is in contact with the surface of the guide plate 513. By adjusting the position state of the square column 527, the square column 527 can limit the position of the guide plate 513, or squeeze the guide plate 513 under the operation of the staff.

[0035] Working principle: When the workpiece 1 is locked with the help of a fastener, the latch pins 514 on both sides of the plug 2 are immediately aligned with the slots 516, the plug 2 is pushed, and the workpiece is inserted. At the same time, the latch pins 514 are pushed into the fixed workpiece 1 by the plug 2. When the latch pins 514 enter the fixed workpiece 1, they cooperate with the load plate 512 to squeeze the compression spring 515. The compression spring 515 is squeezed and deformed. When the latch pins 514 coincide with the slots 516, the latch pins 514 lose the constraint on the fixed workpiece 1 and lose the pressure applied to the load plate 512. At the same time, the compression spring 515 loses the pressure applied by the load plate 512. The compression spring 515 loses the pressure and rebounds, and cooperates with the load plate 512 to push the latch pins 514 into the slots 516. When the latch pins 514 When the latch 516 is inserted, the position of the plug 2 can be limited. Then, ensure that the inclined surfaces of the square columns 527 on both sides are facing outward, align the pressure plate 522 with the connecting cavity 521, and push the pressure plate 522. The pressure plate 522 pushes the square columns 527 into the connecting cavity 521. When the pressure plate 522 is completely pressed into the connecting cavity 521, the sealing ring 524 enters the connecting cavity 521. Then, rotate the fixing bolt 523 clockwise. The fixing bolt 523 is gradually screwed into the thread groove. When the fixing bolt 523 is tightened, the position of the pressure plate 522 can be locked. Then, the operation of limiting the position of the pin is completed. Then, tighten the nut 3 and the washer 4 to the surface of the plug 2. After the nut 3 is tightened, weld the nut 3 to the bottom of the fixed workpiece 1.

[0036] When the bolt 2 needs to be disassembled, the fixing bolt 523 is rotated counterclockwise so that the fixing bolt 523 is disengaged from the thread groove. When the pressure plate 522 loses the lock of the fixing bolt 523, the fixing bolt 523 is pulled, and the fixing bolt 523 pulls the pressure plate 522. The pressure plate 522 pulls the square column 527 under the cooperation of the connecting frame 525 and the guide block 526. The square column 527 is pulled out of the connecting cavity 521. Then the square columns 527 on both sides are rotated so that the inclined surfaces of the square columns 527 on both sides are opposite to each other. After the adjustment of the square columns 527 is completed, the pressure plate 522 is aligned with the connecting cavity 521 again, and the pressure plate 522 is pushed. The pressure plate 522 pushes the square columns 527, the square column 527 reaches the surface of the guide plate 513 during the movement, and continues to squeeze the guide plate 513 under the action of the pressure plate 522. The guide plate 513 squeezes the load-bearing plate 512 under the action of the square column 527. The load-bearing plate 512 pulls the latch 514 under force and squeezes the compression spring 515. The latch 514 is pulled out of the slot 516, and the bolt 2 can be disassembled immediately. By providing the auxiliary component 5, the stability of the fastener in the locked state is improved, thereby reducing the problem of the fastener being easily loosened when the fastener is subjected to vibration, and further improving the locking effect of the fastener.

Claims

1. A special-shaped bolt fastener, comprising a fixing workpiece (1), a plug (2) and an assisting component (5), characterized in that: The plug (2) is installed inside the fixed workpiece (1), a nut (3) is threadedly connected to the surface of the plug (2), a gasket (4) is installed on the upper surface of the nut (3), the gasket (4) is in contact with the lower surface of the fixed workpiece (1), and the assisting component (5) is arranged on the inner wall of the plug (2); The assisting assembly (5) includes a restraining unit (51), the restraining unit (51) includes a force-carrying plate (512), a mounting cavity (511) is provided on the surface of the plug (2), the force-carrying plate (512) is slidably connected to the inner wall of the mounting cavity (511), a guide plate (513) is fixedly connected to the surface of the force-carrying plate (512), a latch (514) is fixedly connected to the side surface of the force-carrying plate (512), a compression spring (515) is fixedly connected to the side of the force-carrying plate (512) away from the latch (514), the compression spring (515) is fixedly connected to the inner wall of the mounting cavity (511), a slot (516) is provided on the inner wall of the fixed workpiece (1), and the latch (514) is plugged into the inner wall of the slot (516); The assisting assembly (5) further comprises an auxiliary unit (52), the auxiliary unit (52) comprising a pressing plate (522), a connecting cavity (521) being provided on the upper surface of the plug (2), the pressing plate (522) being mounted inside the connecting cavity (521), a limiting hole being provided on the surface of the pressing plate (522), a fixing bolt (523) being threadedly connected to the inner wall of the limiting hole of the pressing plate (522), a threaded groove being provided on the inner wall of the connecting cavity (521), the fixing bolt (523) being threadedly connected to the inner wall of the plug (2) The fixed bolt (523) is threadedly connected to the inner wall of the threaded groove, the lower surface of the pressure plate (522) is fixedly connected to a sealing ring (524), the lower surface of the pressure plate (522) is fixedly connected to a connecting frame (525), the inner wall of the connecting frame (525) is slidably connected to a guide block (526), the outer circumference of the guide block (526) is fixedly connected to a square column (527), the side surface of the square column (527) is provided with an arc groove, and the connecting frame (525) is in contact with the inner wall of the arc groove.

2. The special-shaped bolt fastener according to claim 1, characterized in that: The guide plate (513) is arranged obliquely with respect to the force-carrying plate (512), and the guide plate (513) is slidably connected to the inner wall of the installation cavity (511).

3. The special-shaped bolt fastener according to claim 1, characterized in that: The latch (514) penetrates the surface of the plug (2). There are two latches (514) and the two latches (514) are symmetrically arranged with respect to the plug (2). There are two compression springs (515) and the two compression springs (515) are symmetrically arranged with respect to the load plate (512).

4. The special-shaped bolt fastener according to claim 1, characterized in that: The connecting cavity (521) is connected to the inner wall of the installation cavity (511), the fixing bolt (523) passes through the lower surface of the pressure plate (522), and the sealing ring (524) contacts the inner wall of the connecting cavity (521).

5. The special-shaped bolt fastener according to claim 1, characterized in that: The number of the connecting frames (525) is two, and the two connecting frames (525) are arranged in a left-right symmetrical manner with respect to the pressing plate (522). The number of the guide blocks (526) matches that of the connecting frames (525).

6. The special-shaped bolt fastener according to claim 1, characterized in that: There are two square columns (527), and the two square columns (527) are symmetrically arranged with respect to the pressure plate (522). The square columns (527) are interference-fitted with the lower surface of the pressure plate (522). The square columns (527) are plugged into the inner wall of the connecting cavity (521). The lower end of the square column (527) is located inside the installation cavity (511), and the square column (527) is in contact with the surface of the guide plate (513).

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