High-precision anti-seismic bolt

Abstract

The utility model relates to the technical field of special elements on nuts or bolts or special shapes of nuts or bolts, and discloses a high-precision anti-seismic bolt which comprises a first workpiece, a second workpiece is arranged on the lower side of the first workpiece, a bolt groove is formed in the upper side of the first workpiece, a connecting groove is formed in the bottom wall of the bolt groove, and the second workpiece is connected with the connecting groove. The bottom wall of the connecting groove extends out of the first workpiece, a threaded groove is formed in the second workpiece, the top wall of the threaded groove extends out of the second workpiece, a bolt head is arranged in the bolt groove, the lower side of the bolt head is fixedly connected with a bolt rod, and the lower end of the bolt rod extends into the connecting groove and the threaded groove. According to the technical scheme, the limiting ring grooves are formed in the inner surfaces of the connecting grooves, the fixing mechanisms are arranged on the bolt head and the bolt rod, in this way, threaded connection looseness caused by vibration can be prevented, then the stability between two connecting pieces cannot be affected by vibration, and workpieces can be conveniently used in occasions with large vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of special components on nuts or bolts, or the special shapes of nuts or bolts, and specifically relates to a high-precision earthquake-resistant bolt. Background Technique

[0002] A bolt is a mechanical connecting piece with threads, usually consisting of two parts: a head and a rod. The bolt cooperates with a nut to fasten and connect two parts with through holes. This connection form belongs to detachable connection and is widely used in steel structure buildings.

[0003] However, in some occasions with large vibrations, due to vibrations, the bolts may become loose. Among them, the car bodies of railway vehicles and locomotives are in a vibrating state for a long time, and the bolts used are quite common to fall off. Therefore, when it is necessary to fix two connected parts, bolt connection is often used. However, when the connected parts vibrate due to external forces, the bolts often become loose, which in turn affects the stability between the two connectors. In view of this, we propose a high-precision earthquake-resistant bolt. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a high-precision earthquake-resistant bolt, which has the function of preventing the thread connection between the bolt and the bolt groove from loosening due to vibration, so that the stability between the two connectors will not be affected by vibration, and it is convenient to use workpieces in occasions with large vibrations.

[0006] (2) Technical Solutions

[0007] To achieve the above purpose, the utility model provides the following technical solutions: a high-precision earthquake-resistant bolt, including a first workpiece, a second workpiece is arranged on the lower side of the first workpiece, a bolt groove is opened on the upper side of the first workpiece, a connection groove is opened on the bottom wall of the bolt groove, and the bottom wall of the connection groove extends out of the first workpiece;

[0008] A thread groove is opened inside the second workpiece, the top wall of the thread groove extends out of the second workpiece, and a bolt head is arranged inside the bolt groove;

[0009] A bolt rod is fixedly connected to the lower side of the bolt head, and the lower end of the bolt rod extends into the connection groove and the thread groove respectively;

[0010] The bolt rod is threadedly connected to the thread groove, and a limiting ring groove is opened on the inner surface of the connection groove;

[0011] A fixing mechanism is arranged on the bolt head and the bolt rod. Through the fixing mechanism, the bolt rod can be clamped and fixed with the limiting ring groove, thereby preventing loosening due to vibration;

[0012] The fixing mechanism includes a sliding groove, two connection ports, two sliding blocks, two groups of first springs, two limiting blocks, a mounting groove, a top plate, a second spring, a plug rod, an annular groove, two disassembly and assembly grooves, two fixing blocks, and two fixing grooves.

[0013] Preferably, the sliding groove is formed inside the bolt rod, the two connection ports are respectively formed on the front wall and the rear wall of the sliding groove, and one wall of the two connection ports away from each other extends out of the bolt rod;

[0014] The two sliding blocks are both slidably connected inside the sliding groove, and the two groups of first springs are respectively fixedly connected to one side of the two sliding blocks away from each other.

[0015] Preferably, one ends of the two groups of first springs away from each other are respectively fixedly connected to the inner wall of the sliding groove, and the two limiting blocks are respectively fixedly connected to one side of the two sliding blocks away from each other;

[0016] The two limiting blocks respectively extend out of the bolt rod through the two connection ports, and the two limiting blocks can both be adapted to the limiting annular groove, and the mounting groove is formed inside the bolt rod.

[0017] Preferably, the mounting groove is formed at the center position of the bolt rod, the top wall of the mounting groove extends into the bolt head, the top wall of the mounting groove extends out of the bolt head, and the inside of the mounting groove is communicated with the inside of the sliding groove;

[0018] The top plate is slidably connected inside the mounting groove, the second spring is fixedly connected to the lower side of the top plate, and the lower end of the second spring is fixedly connected to the bottom wall of the mounting groove.

[0019] Preferably, the plug rod is inserted into the mounting groove, the lower end of the plug rod is conical, the annular groove is formed on the inner surface of the mounting groove, and the annular groove is arranged inside the bolt head;

[0020] The two disassembly and assembly grooves are both formed on the top wall of the annular groove, the top walls of the two disassembly and assembly grooves extend out of the bolt head, and the two disassembly and assembly grooves are symmetrically arranged front and back.

[0021] Preferably, the two fixing blocks are both fixedly connected to the outer surface of the plug rod, the two fixing blocks can be adapted to the two disassembly and assembly grooves, and the two fixing grooves are respectively formed on the top wall of the annular groove;

[0022] The two fixing grooves are symmetrically arranged left and right, the top walls of the two fixing grooves do not extend out of the bolt head, and the two fixing grooves can be adapted to the two fixing blocks.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the present utility model provides a high-precision earthquake-resistant bolt, which has the following beneficial effects:

[0025] (1) After the high-precision earthquake-resistant bolt fixes the first workpiece and the second workpiece, the insertion rod is inserted into the interior of the installation groove. After transmission, both limiting blocks will move into the interior of the limiting ring groove to form limiting fixation. Thus, during the working process, the two limiting blocks will always be inside the limiting ring groove. Since vibration cannot release the clamping and limiting state between the limiting block and the limiting ring groove, vibration cannot cause the bolt rod to move upward and become loose, thereby ensuring the stability of the connection during the working process. In this way, it is possible to prevent the loosening of the threaded connection due to vibration, so that the stability between the two connecting parts will not be affected by vibration, which facilitates the use of workpieces in occasions with large vibrations.

[0026] (2) When installing the insertion rod of the high-precision earthquake-resistant bolt, first move the two fixing blocks to the positions of the two disassembly and assembly grooves, then move the insertion rod downward. Then the two fixing blocks will enter the interior of the ring groove. After that, rotate the insertion rod, and the two fixing blocks will move to the positions of the two fixing grooves. Then the second spring returns from the compressed state. After transmission, the two fixing blocks are adapted to the two fixing grooves to form a clamping state. In this way, it is possible to prevent the fixing mechanism from being affected by vibration, thereby affecting the threaded connection between the bolt rod and the threaded groove, and ensuring the stability of the fixing mechanism during the working process. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of a high-precision earthquake-resistant bolt of the present invention;

[0028] Figure 2 is a schematic sectional connection structure diagram of the first workpiece and the second workpiece of the present invention;

[0029] Figure 3 is a schematic sectional connection structure diagram of the bolt rod of the present invention;

[0030] Figure 4 is a schematic sectional connection structure diagram of the bolt head and the left side of the bolt rod of the present invention;

[0031] Figure 5 is a schematic sectional connection structure diagram of the bolt head and the front side of the bolt rod of the present invention;

[0032] Figure 6 is Figure 5 an enlarged schematic view of part A of

[0033] In the figure: 1. First workpiece; 2. Second workpiece; 3. Bolt groove; 4. Connection groove; 5. Thread groove; 6. Bolt head; 7. Bolt rod; 8. Limiting ring groove; 9. Sliding groove; 10. Connection port; 11. Sliding block; 12. First spring; 13. Limiting block; 14. Installation groove; 15. Top plate; 16. Second spring; 17. Insertion rod; 18. Ring groove; 19. Disassembly and assembly groove; 20. Fixed block; 21. Fixed groove. Specific implementation manner

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 to 6 , the present invention provides a new technical solution: a high-precision earthquake-resistant bolt, including a first workpiece 1, a second workpiece 2 is arranged below the first workpiece 1, a bolt groove 3 is opened on the upper side of the first workpiece 1, a connection groove 4 is opened on the bottom wall of the bolt groove 3, the bottom wall of the connection groove 4 extends out of the first workpiece 1, a thread groove 5 is opened inside the second workpiece 2, the top wall of the thread groove 5 extends out of the second workpiece 2, the positions of the connection groove 4 and the thread groove 5 correspond to each other, a bolt head 6 is arranged inside the bolt groove 3, a bolt rod 7 is fixedly connected to the lower side of the bolt head 6, the lower end of the bolt rod 7 respectively extends into the connection groove 4 and the thread groove 5, and the bolt rod 7 is threadedly connected to the thread groove 5, so that the first workpiece 1 and the second workpiece 2 are fixedly connected together. A limiting ring groove 8 is opened on the inner surface of the connection groove 4, and a fixing mechanism is arranged on the bolt head 6 and the bolt rod 7. Through the fixing mechanism, the bolt rod 7 can be clamped and fixed with the limiting ring groove 8, thereby preventing loosening due to vibration. The fixing mechanism includes a sliding groove 9, two connection ports 10, two sliding blocks 11, two groups of first springs 12, two limiting blocks 13, an installation groove 14, a top plate 15, a second spring 16, an insertion rod 17, a ring groove 18, two disassembly and assembly grooves 19, two fixed blocks 20 and two fixed grooves 21.

[0036] Further, a sliding groove 9 is formed inside the bolt rod 7. Two connection ports 10 are respectively formed on the front wall and the rear wall of the sliding groove 9. One wall of the two connection ports 10 away from each other extends out of the bolt rod 7. Two sliding blocks 11 are both slidably connected inside the sliding groove 9. Two groups of first springs 12 are respectively fixedly connected to the sides of the two sliding blocks 11 away from each other. One ends of the two groups of first springs 12 away from each other are respectively fixedly connected to the inner wall of the sliding groove 9. Two limiting blocks 13 are respectively fixedly connected to the sides of the two sliding blocks 11 away from each other. The two limiting blocks 13 respectively extend out of the bolt rod 7 through the two connection ports 10. The two limiting blocks 13 can both be adapted to the limiting ring groove 8. An installation groove 14 is formed inside the bolt rod 7. The installation groove 14 is formed at the center position of the bolt rod 7. The top wall of the installation groove 14 extends into the bolt head 6. The top wall of the installation groove 14 extends out of the bolt head 6. The inside of the installation groove 14 is communicated with the inside of the sliding groove 9. A top plate 15 is slidably connected inside the installation groove 14. A second spring 16 is fixedly connected to the lower side of the top plate 15. The lower end of the second spring 16 is fixedly connected to the bottom wall of the installation groove 14.

[0037] Further, an insertion rod 17 is inserted into the installation groove 14. The lower end of the insertion rod 17 is conical. An annular groove 18 is formed on the inner surface of the installation groove 14. The annular groove 18 is arranged inside the bolt head 6. Two disassembly and assembly grooves 19 are both formed on the top wall of the annular groove 18. The top walls of the two disassembly and assembly grooves 19 extend out of the bolt head 6. The two disassembly and assembly grooves 19 are arranged symmetrically front and back. Two fixing blocks 20 are both fixedly connected to the outer surface of the insertion rod 17. The two fixing blocks 20 can be adapted to the two disassembly and assembly grooves 19. Two fixing grooves 21 are respectively formed on the top wall of the annular groove 18. The two fixing grooves 21 are arranged symmetrically left and right. The top walls of the two fixing grooves 21 do not extend out of the bolt head 6. The two fixing grooves 21 can be adapted to the two fixing blocks 20.

[0038] When starting work, first align the bolt rod 7 with the connecting groove 4 and insert it. Then rotate the bolt head 6. The bolt head 6 drives the bolt rod 7 to rotate. Then the bolt rod 7 will be threadedly connected with the threaded groove 5. Then the first workpiece 1 and the second workpiece 2 are fixedly connected. At this time, the bolt head 6 is inside the bolt groove 3. After the fixation of the first workpiece 1 and the second workpiece 2 is completed, insert the insertion rod 17 into the installation groove 14. Then the lower end of the insertion rod 17 will move between the two sliding blocks 11. Then the insertion rod 17 will push the two sliding blocks 11 away from each other. Then the two sliding blocks 11 push the two limiting blocks 13 to move synchronously. Then the two limiting blocks 13 will both move into the limiting ring groove 8 to form a limiting fixation. At this time, the limiting blocks 13 begin to be in a stretched state. Then during the working process, the two limiting blocks 13 will always be inside the limiting ring groove 8. Because the vibration cannot release the clamped and limited state between the limiting blocks 13 and the limiting ring groove 8, the vibration cannot cause the bolt rod 7 to move upward and become loose. Then the stability of the connection during the working process is ensured. In this way, it is possible to prevent the threaded connection from becoming loose due to vibration, so that the stability between the two connecting parts will not be affected by vibration, which facilitates the use of workpieces in occasions with large vibrations.

[0039] Furthermore, when installing the insertion rod 17, first move the two fixing blocks 20 to the positions of the two disassembly and assembly grooves 19. Then move the insertion rod 17 downward. The insertion rod 17 drives the two fixing blocks 20 to move downward. Then the two fixing blocks 20 will pass through the two disassembly and assembly grooves 19 and enter the inside of the ring groove 18. At this time, the lower end of the insertion rod 17 drives the top plate 15 to move downward. Then the second spring 16 begins to be in a compressed state. After that, rotate the insertion rod 17. Then the insertion rod 17 drives the two fixing blocks 20 to rotate inside the ring groove 18. Stop when the two fixing blocks 20 move to the positions of the two fixing grooves 21. Then release the insertion rod 17. At this time, the second spring 16 returns from the compressed state, pushing the top plate 15 to reset. The top plate 15 pushes the insertion rod 17 to move upward. Then the insertion rod 17 drives the two fixing blocks 20 to move upward. Then the two fixing blocks 20 will move into the two fixing grooves 21. Then the two fixing blocks 20 are adapted to the two fixing grooves 21 to form a clamped state. Then it is possible to ensure the stability of the position of the insertion rod 17 during use. As can be seen from the above, when disassembling, it is necessary to first move the insertion rod 17 downward and then rotate it so that the fixing block 20 moves to the position of the disassembly and assembly groove 19 before it can be taken out. In this way, it is avoided that the fixing mechanism is affected due to vibration, which in turn affects the threaded connection between the bolt rod 7 and the threaded groove 5, and the stability of the fixing mechanism during the working process is ensured.

[0040] Working principle: When starting to work, first align the bolt rod 7 with the connection groove 4 and insert it. Then rotate the bolt head 6. The bolt head 6 drives the bolt rod 7 to rotate. Then the bolt rod 7 will be threadedly connected with the thread groove 5. Thus, the first workpiece 1 and the second workpiece 2 are fixedly connected. At this time, the bolt head 6 is inside the bolt groove 3. After the fixation of the first workpiece 1 and the second workpiece 2 is completed, insert the insertion rod 17 into the installation groove 14. Then the lower end of the insertion rod 17 will move between the two sliding blocks 11. Then the insertion rod 17 will push the two sliding blocks 11 away from each other. Then the two sliding blocks 11 push the two limiting blocks 13 to move synchronously. Then the two limiting blocks 13 will both move into the limiting ring groove 8 to form a limiting fixation. At this time, the limiting blocks 13 start to be in a stretched state. Then during the working process, the two limiting blocks 13 will always be inside the limiting ring groove 8. Because the vibration cannot release the clamped and limited state between the limiting blocks 13 and the limiting ring groove 8, the vibration cannot cause the bolt rod 7 to move upward and become loose. Thus, the stability of the connection during the working process is ensured.

[0041] Furthermore, when installing the insertion rod 17, first move the two fixing blocks 20 to the positions of the two disassembly and assembly grooves 19. Then move the insertion rod 17 downward. The insertion rod 17 drives the two fixing blocks 20 to move downward. Then the two fixing blocks 20 will pass through the two disassembly and assembly grooves 19 and enter the inside of the ring groove 18. At this time, the lower end of the insertion rod 17 drives the top plate 15 to move downward. Then the second spring 16 starts to be in a compressed state. After that, rotate the insertion rod 17. Then the insertion rod 17 drives the two fixing blocks 20 to rotate inside the ring groove 18. Stop when the two fixing blocks 20 move to the positions of the two fixing grooves 21. Then release the insertion rod 17. At this time, the second spring 16 returns from the compressed state, pushing the top plate 15 to reset. The top plate 15 pushes the insertion rod 17 to move upward. Then the insertion rod 17 drives the two fixing blocks 20 to move upward. Then the two fixing blocks 20 will move into the two fixing grooves 21. Then the two fixing blocks 20 are adapted to the two fixing grooves 21 to form a clamped state. Thus, the stability of the position of the insertion rod 17 during use can be ensured. As can be seen from the above, when disassembling, it is necessary to first move the insertion rod 17 downward and then rotate it so that the fixing blocks 20 move to the positions of the disassembly and assembly grooves 19 before it can be taken out.

[0042] 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 high-precision anti-seismic bolt, comprising a first workpiece (1), a second workpiece (2) being arranged on the lower side of the first workpiece (1), a bolt groove (3) being provided on the upper side of the first workpiece (1), a connecting groove (4) being provided on the bottom wall of the bolt groove (3), and the bottom wall of the connecting groove (4) extending out of the first workpiece (1); A thread groove (5) is provided inside the second workpiece (2), a top wall of the thread groove (5) extends out of the second workpiece (2), and a bolt head (6) is provided inside the bolt groove (3); A bolt rod (7) is fixedly connected to the lower side of the bolt head (6), and the lower end of the bolt rod (7) extends into the interior of the connecting groove (4) and the thread groove (5) respectively; The bolt rod (7) is threadedly connected to the thread groove (5), and is characterized in that: The inner surface of the connecting groove (4) is provided with a limiting annular groove (8); A fixing mechanism is provided on the bolt head (6) and the bolt rod (7), and the bolt rod (7) can be clamped and fixed together with the limiting ring groove (8) through the fixing mechanism, thereby preventing loosening due to vibration; The fixing mechanism comprises a sliding groove (9), two connecting ports (10), two sliding blocks (11), two groups of first springs (12), two limit blocks (13), a mounting groove (14), a top plate (15), a second spring (16), an insert rod (17), an annular groove (18), two disassembly grooves (19), two fixing blocks (20) and two fixing grooves (21).

2. A high-precision earthquake-resistant bolt according to claim 1, characterized in that: The sliding groove (9) is formed inside the bolt rod (7), and the two connecting openings (10) are respectively formed on the front wall and the rear wall of the sliding groove (9), and the bolt rod (7) is extended from one wall of the two connecting openings (10) away from each other; The two sliding blocks (11) are both slidably connected inside the sliding groove (9), and the two groups of first springs (12) are respectively fixedly connected to the sides of the two sliding blocks (11) that are away from each other.

3. A high-precision earthquake-resistant bolt according to claim 2, characterized in that: The ends of the two groups of the first springs (12) that are away from each other are respectively fixedly connected to the inner wall of the sliding groove (9), and the two limit blocks (13) are respectively fixedly connected to the sides of the two sliding blocks (11) that are away from each other; The two limit blocks (13) extend out of the bolt rod (7) through the two connection ports (10) respectively. The two limit blocks (13) can be matched with the limit ring groove (8). The installation groove (14) is arranged inside the bolt rod (7).

4. A high-precision earthquake-resistant bolt according to claim 3, characterized in that: The mounting groove (14) is formed at the center of the bolt rod (7), the top wall of the mounting groove (14) extends into the interior of the bolt head (6), the top wall of the mounting groove (14) extends out of the bolt head (6), and the interior of the mounting groove (14) is connected to the interior of the sliding groove (9); The top plate (15) is slidably connected to the inside of the mounting groove (14), the second spring (16) is fixedly connected to the lower side of the top plate (15), and the lower end of the second spring (16) is fixedly connected to the bottom wall of the mounting groove (14).

5. The high-precision earthquake-resistant bolt according to claim 1, characterized in that: The insert rod (17) is inserted into the interior of the installation groove (14), the lower end of the insert rod (17) is conical, the annular groove (18) is opened on the inner surface of the installation groove (14), and the annular groove (18) is arranged inside the bolt head (6); The two disassembly and assembly grooves (19) are both arranged on the top wall of the annular groove (18), the bolt heads (6) extend from the top walls of the two disassembly and assembly grooves (19), and the two disassembly and assembly grooves (19) are symmetrically arranged front and back.

6. The high-precision earthquake-resistant bolt according to claim 1, characterized in that: The two fixing blocks (20) are both fixedly connected to the outer surface of the insertion rod (17), the two fixing blocks (20) can be matched with the two disassembly grooves (19), and the two fixing grooves (21) are respectively opened on the top wall of the annular groove (18); The two fixing grooves (21) are arranged symmetrically on both sides, the top walls of the two fixing grooves (21) do not extend beyond the bolt heads (6), and the two fixing grooves (21) can be matched with the two fixing blocks (20).

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