Stud screw with anti-loosening function

Abstract

The utility model discloses a double-end screw with an anti-loosening function, which comprises a double-end bolt main body and two mounting connecting columns, the two ends of the double-end bolt main body are provided with adaptive mounting grooves, the mounting connecting columns are fixedly mounted in the adaptive mounting grooves, and the mounting connecting columns are connected with the adaptive mounting grooves. An adaptive mounting square groove penetrating through the mounting connecting column is formed in the end of the mounting connecting column, limiting connecting sliding plates are symmetrically arranged on the two sides of the interior of the adaptive mounting square groove, and a plurality of anti-loosening limiting pins are fixedly connected to the sides, away from each other, of the two limiting connecting sliding plates at equal intervals; and the anti-loose limiting pin penetrates through the mounting connecting column and the stud main body. According to the anti-loosening double-end bolt, parts such as the multi-section thread transmission rod, the internal thread sliding connection base, the limiting connection sliding plate and the anti-loosening limiting pin are matched, threads and a workpiece are protected through the thread protection rubber column, the double-end bolt body and a nut or the corresponding workpiece are kept relatively stable, and the double-end bolt body is prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of stud bolts, in particular to a stud screw with an anti-loosening function. Background Art

[0002] In the prior art, stud bolts are also called double-headed screws or double-headed studs, which are used for the fixed connection function of connecting machinery. Stud bolts have threads on both ends, and the screw in the middle is thick or thin. They are generally used in mining machinery, bridges, automobiles, motorcycles, boiler steel structures, tower cranes, large-span steel structures and large buildings.

[0003] After searching, the Chinese patent application number 202021582817.1 discloses a stainless steel double-headed screw with anti-loosening function, including a device body, push rods are provided on both sides of the device body, and a wedge block is provided at the bottom end of the push rod, limiting blocks are provided on both sides of the inner wall of the device body, a movable rod is provided inside the limiting block, a movable block is provided on one side of the movable rod, and a traction rod is provided on the other side of the movable rod, movable grooves are opened on both sides of the device body, movable pins are provided at both ends of the movable grooves, a limiting plate is provided at one end of the movable pin, and a traction spring is provided between the two limiting plates.

[0004] The above patent has the following shortcomings: the double-headed screw can prevent the screw from loosening during installation, ensure the stability of the screw, make the connection of the screw more firm, and avoid the objects connected by the screw from detaching; however, in actual use, both ends of the double-headed bolt are provided with a large cavity, which will weaken the strength of the double-headed bolt itself to a certain extent. At the same time, if the bolt body is set to be one-piece and then a cavity is opened in the installation groove adapted for the movable pin, the processing difficulty of the double-headed bolt will be increased. If the bolt body is set to be assembled, the effectiveness of the movable pin itself will be reduced. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a double-head screw with an anti-loosening function.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-headed screw with an anti-loosening function comprises: a double-headed bolt body and two mounting connecting columns, both ends of the double-headed bolt body are provided with adapting mounting grooves, the mounting connecting column is fixedly installed inside the adapting mounting groove, and the end of the mounting connecting column is provided with an adapting mounting square groove that penetrates the mounting connecting column, and limiting connecting slides are symmetrically arranged on both sides of the adapting mounting square groove, and a plurality of anti-loosening limit pins are fixedly connected at equal distances on the sides of the two limiting connecting slides away from each other, the anti-loosening limit pins penetrate the mounting connecting column and the double-headed bolt body, and a thread protection rubber column is fixedly connected to the end of the anti-loosening limit pin away from the limiting connecting slide.

[0008] As a further solution of the utility model: the top inner wall and the bottom inner wall of the adapter installation square groove are both fixedly installed with positioning connection clamps, and a plurality of rotation limiting connection plates are fixedly connected at equal distances between the two positioning connection clamps.

[0009] As a further solution of the utility model: a multi-section threaded transmission rod is rotatably installed between the plurality of rotation limiting connecting plates, and the outer wall of the multi-section threaded transmission rod has a plurality of internal threaded sliding connection seats for thread transmission.

[0010] As a further solution of the utility model: two rotating connection push rods are rotatably connected to both sides of the internal thread sliding connection seat, and one end of multiple groups of rotating connection push rods are rotatably connected to a fixed connection seat.

[0011] As a further solution of the utility model: the two limiting connection slide plates are both clamped with a positioning connection push plate on one side close to each other, and the positioning connection push plate is fixedly connected to a plurality of fixed connection seats on one side close to the multi-section threaded transmission rod.

[0012] As a further solution of the utility model: one end of the multi-section threaded transmission rod passes through the positioning connection clamp plate and extends outward, and a rotation control head is fixedly installed on the extended end.

[0013] As a further solution of the utility model: the end of the positioning and connecting clamp is fixedly connected with a fixing ear plate 1, and the end of the fixing ear plate 1 is fixedly inserted with a fixing pin rod 1.

[0014] As a further solution of the utility model: the top and the bottom of the front side of the mounting connection column are fixedly connected with a second fixing ear plate, and the front side of the second fixing ear plate is fixedly plugged with a second fixing pin rod.

[0015] Compared with the prior art, the utility model provides a double-headed screw with an anti-loosening function, which has the following beneficial effects:

[0016] 1. The stud screw with anti-loosening function, through the cooperation of parts such as a multi-section threaded transmission rod, an internal threaded sliding connection seat, a limit connection slide plate and an anti-loosening limit pin, cooperates with the thread protection rubber column to protect the thread and the workpiece, so that the stud bolt body and the nut or the corresponding workpiece remain relatively stable, preventing the stud bolt body from loosening.

[0017] 2. The stud screw with anti-loosening function strengthens the stud bolt body by installing a connecting column, reduces the impact of the stud bolt body having an adapting installation groove, and ensures the safety of the overall device.

[0018] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall assembly of the utility model;

[0020] Figure 2 It is a partial cross-sectional structural schematic diagram of the overall assembly of the utility model;

[0021] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0023] In the figure: 1. stud bolt body; 2. adaptor mounting groove; 3. mounting connection column; 4. adaptor mounting square groove; 5. positioning connection card plate; 6. rotation limit connection plate; 7. multi-section threaded transmission rod; 8. limit connection slide plate; 9. positioning connection push plate; 10. fixed connection seat; 11. rotation connection push rod; 12. internal thread sliding connection seat; 13. anti-loosening limit pin; 14. thread protection rubber column; 15. adaptor tooth socket; 16. fixed ear plate one; 17. fixed pin rod one; 18. rotation control head; 19. fixed ear plate two; 20. fixed pin rod two; 21. limit connection block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] A double-headed screw with anti-loosening function, such as Figures 1 to 4As shown, it comprises: a stud bolt body 1 and two installation connection columns 3. Both ends of the stud bolt body 1 are provided with an adapting installation groove 2, and the installation connection columns 3 are fixedly installed inside the adapting installation groove 2.

[0026] The top and bottom of the front side of the installation connecting column 3 are integrally formed with a fixing ear plate 21, and the front side of the fixing ear plate 19 is fixedly inserted with a fixing pin rod 20, and the tail end of the fixing pin rod 20 is fixedly inserted into the inside of the stud bolt body 1; both sides of the installation connecting column 3 are integrally formed with a limiting connection block 21, and the limiting connection block 21 is clamped in the side wall of the adapter installation groove 2.

[0027] An adapting installation square groove 4 which penetrates the installation connecting column 3 is provided at the end of the installation connecting column 3, and limiting connecting slide plates 8 are symmetrically arranged on both sides inside the adapting installation square groove 4. A plurality of anti-loosening limit pins 13 are equidistantly welded on the sides of the two limiting connecting slide plates 8 which are away from each other, and an adapting tooth groove 15 is provided on the threaded part of the stud bolt body 1 corresponding to the two groups of anti-loosening limit pins 13.

[0028] The anti-loosening limit pin 13 passes through the installation connection column 3 and the stud bolt body 1, and the end of the anti-loosening limit pin 13 away from the limiting connection slide plate 8 is fixedly connected with a thread protection rubber column 14. When the limiting connection slide plate 8 is in contact with the inner wall of the adapter installation square groove 4, the end of the thread protection rubber column 14 extends out of the stud bolt body 1, squeezing the nut installed outside the stud bolt body 1 and the adjacent workpiece, so that the stud bolt body 1 and the nut and the adjacent workpiece are fully stabilized to prevent the stud bolt body 1 from loosening.

[0029] The top inner wall and the bottom inner wall of the adapter installation square groove 4 are fixedly installed with a positioning connection card plate 5, and the end of the positioning connection card plate 5 is welded with a fixing ear plate 16, and the end of the fixing ear plate 16 is fixedly inserted with a fixing pin rod 17, and the tail end of the fixing pin rod 17 is fixedly inserted into the inside of the installation connection column 3.

[0030] A plurality of rotation limiting connecting plates 6 are welded equidistantly between the two positioning connecting clamps 5 , a multi-section threaded transmission rod 7 is rotatably installed between the plurality of rotation limiting connecting plates 6 , and a plurality of internal threaded sliding connecting seats 12 are threadedly transmitted on the outer wall of the multi-section threaded transmission rod 7 .

[0031] The outer wall of the multi-section threaded transmission rod 7 is provided with multiple pairs of threads at equal intervals, each pair of threads is arranged as a left-handed thread and a right-handed thread, and the outer wall of the multi-section threaded transmission rod 7 corresponding to each section of the thread is provided with a matching internally threaded sliding connection seat 12; when the multi-section threaded transmission rod 7 rotates clockwise, the two internally threaded sliding connection seats 12 corresponding to each pair of threads move away from each other.

[0032] Two rotating connecting push rods 11 are rotatably connected to both sides of the internal thread sliding connecting seat 12 through a rotating pin. The two rotating connecting push rods 11 are respectively arranged at the top and bottom of the side of the internal thread sliding connecting seat 12, and one end of multiple groups of rotating connecting push rods 11 are rotatably connected to a fixed connecting seat 10.

[0033] The two limit connecting slides 8 are each clamped with a positioning connecting push plate 9 on one side close to each other. The positioning connecting push plate 9 is fixedly connected to multiple fixed connecting seats 10 on one side close to the multi-section threaded transmission rod 7. When the multi-section threaded transmission rod 7 rotates clockwise, the rotating connecting push rod 11 pushes the two limit connecting slides 8 away from each other through the positioning connecting push plate 9.

[0034] One end of the multi-section threaded transmission rod 7 passes through the positioning connection clamp plate 5 and extends outwards, and a rotation control head 18 is fixedly installed on the extended end. The rotation control head 18 is used to control the rotation of the multi-section threaded transmission rod 7.

[0035] Working principle:

[0036] Please refer to Figures 1 to 4 , assemble the device as shown in the figure;

[0037] When the device is in use, first, according to the needs of use, the stud bolt body 1 is installed on the corresponding workpiece through the nut; then the multi-section threaded transmission rod 7 is rotated clockwise by rotating the control head 18, and the internal threaded sliding connection seats 12 corresponding to the multiple pairs of threads on the outer wall of the multi-section threaded transmission rod 7 move away from each other, thereby driving the corresponding rotating connection push rod 11 to move, and the rotating connection push rod 11 pushes the two limiting connection slide plates 8 away from each other through the positioning connection push plate 9, and the limiting connection slide plate 8 pushes the anti-loosening limiting pin 13 out of the stud bolt body 1, and then squeezes the thread of the nut or the installation hole of the corresponding workpiece through the thread protection rubber column 14, so that the stud bolt body 1 and the nut or the corresponding workpiece remain relatively stable, and prevents the stud bolt body 1 from loosening.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-head screw with anti-loosening function, characterized in that: include: A stud bolt body (1) and two mounting connection columns (3), both ends of the stud bolt body (1) are provided with an adapting mounting groove (2), the mounting connection column (3) is fixedly installed inside the adapting mounting groove (2), and the end of the mounting connection column (3) is provided with an adapting mounting square groove (4) penetrating the mounting connection column (3), and the two sides of the adapting mounting square groove (4) are symmetrically provided with limiting connection slide plates (8), and the sides of the two limiting connection slide plates (8) away from each other are fixedly connected with a plurality of anti-loosening limit pins (13) at equal distances, and the anti-loosening limit pins (13) penetrate the mounting connection column (3) and the stud bolt body (1), and the end of the anti-loosening limit pin (13) away from the limiting connection slide plate (8) is fixedly connected with a thread protection rubber column (14).

2. The stud screw with anti-loosening function according to claim 1, characterized in that: Positioning connection clamps (5) are fixedly mounted on the top inner wall and the bottom inner wall of the adapting installation square groove (4), and a plurality of rotation limiting connection plates (6) are fixedly connected at equal distances between two positioning connection clamps (5).

3. The stud screw with anti-loosening function according to claim 2, characterized in that: A multi-section threaded transmission rod (7) is rotatably mounted between the plurality of rotation limiting connection plates (6), and the outer wall of the multi-section threaded transmission rod (7) is threadedly provided with a plurality of internal threaded sliding connection seats (12).

4. The stud screw with anti-loosening function according to claim 3, characterized in that: Two rotating connection push rods (11) are rotatably connected to both sides of the internal thread sliding connection seat (12), and one end of multiple groups of rotating connection push rods (11) are rotatably connected to a fixed connection seat (10).

5. The stud screw with anti-loosening function according to claim 4, characterized in that: The two limit connection slide plates (8) are both clamped with a positioning connection push plate (9) on the sides close to each other, and the positioning connection push plate (9) is fixedly connected to a plurality of fixed connection seats (10) on the side close to the multi-section threaded transmission rod (7).

6. The stud screw with anti-loosening function according to claim 3, characterized in that: One end of the multi-section threaded transmission rod (7) passes through the positioning connection clamping plate (5) and extends outward, and a rotation control head (18) is fixedly mounted on the extended end.

7. The stud screw with anti-loosening function according to claim 2, characterized in that: The end of the positioning connection card plate (5) is fixedly connected to a fixing ear plate (16), and the end of the fixing ear plate (16) is fixedly plugged with a fixing pin rod (17).

8. The stud screw with anti-loosening function according to claim 1, characterized in that: The top and bottom of the front side of the installation connection column (3) are both fixedly connected with a second fixing ear plate (19), and the front side of the second fixing ear plate (19) is fixedly plugged with a second fixing pin rod (20).

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