Double-end stud with anti-loose nut

Abstract

The utility model discloses a double-end stud with an anti-loose nut, which relates to the field of double-end studs and comprises a supporting middle column, rotating end blocks are symmetrically butted at two ends of the supporting middle column, and a butting end disc is welded at one end, far away from the supporting middle column, of each rotating end block. A supporting gasket is horizontally connected to the side edge, away from the rotating end block, of the butt joint end disc in a butt joint mode, connecting screw rods are horizontally and symmetrically welded to the two ends of the supporting middle column, the outer side edges of the connecting screw rods are in threaded connection with matched screw blocks, and pressing blocks are symmetrically connected to the side edges of the matched screw blocks in a clamped mode; end annular grooves are symmetrically formed in the two ends of the supporting middle column, limiting gear rings are symmetrically and fixedly arranged at the two ends of the supporting middle column, limiting groove channels are evenly formed in the outer side edge of the connecting screw rod, and multiple tooth connection limiting structures are adopted so that the situation of rotation loosening can be effectively prevented; and meanwhile, the limiting stability is further improved through an overturning limiting structure.

Description

Technical Field

[0001] The utility model relates to the technical field of double-headed studs, in particular to a double-headed stud for preventing a nut from loosening. Background Art

[0002] Stud bolts are cylindrical fasteners with threads on both ends. They are widely used in electric power, chemical industry, oil refining, valves, railways, bridges, steel structures, auto parts, machinery, boiler steel structures, hanging towers, large-span steel structures and large buildings.

[0003] When the current double-ended studs are installed and used, since they are fixedly connected by a single screw thread at both ends, the vibration of the object after the connection will cause the thread to loosen, resulting in loosening and disengagement, making the installation unstable and unable to meet the current installation requirements. Utility Model Content

[0004] The utility model aims to provide a double-ended stud with a nut that prevents loosening, so as to solve the problem raised in the above-mentioned background technology that when the current double-ended stud is installed and used, since it is a single screw thread fixed connection at both ends, the vibration of the object after the connection will cause the thread to loosen, resulting in loosening and disengagement, making it impossible to install stably, and unable to meet the current installation and use requirements.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A double-headed stud for preventing a nut from loosening comprises a supporting middle column, wherein both ends of the supporting middle column are symmetrically butted with rotating end blocks, the rotating end block is welded with a butt end plate at one end away from the supporting middle column, and the butt end plate is horizontally butted with a supporting gasket at one side away from the rotating end block, connecting screws are horizontally and symmetrically welded at both ends of the supporting middle column, the outer side of the connecting screw is threadedly connected with a matching screw block, and the side of the matching screw block is symmetrically clamped with a pressing block, and end annular grooves are symmetrically opened at both ends of the supporting middle column, and limited tooth rings are symmetrically fixed at both ends of the supporting middle column, and limited grooves are evenly opened on the outer side of the connecting screw, and a horizontal opening is opened at the inner center position of the rotating end block. The rotatable end block is welded with an end clamping ring at the end away from the docking end plate, and a limiting tooth groove is provided at the end away from the docking end plate. A limiting tooth block is evenly fixed on the side of the docking end plate away from the rotating end block, and a positioning pin is evenly welded on one side of the support gasket, and a stabilizing tooth block is evenly fixed on the side away from the positioning pin. A fixing screw hole is horizontally provided at the center position of the mating screw block, and a flip block is symmetrically clamped on the inner side wall of the mating screw block. A supporting shaft rod is horizontally inserted on the side of the flip block, and support springs are symmetrically fixedly sleeved on both ends of the support shaft rod, and a clamping oblique block is fixedly welded on one side of the flip block.

[0007] As a preferred embodiment of the utility model: the supporting center column is set in the shape of a polygonal column, the number of rotating end blocks is two, and one end of the two rotating end blocks is butt-jointed and set at the open end of the end annular groove, and the rotating end blocks are sleeved on the outer side of the connecting screw through a through hole at the center position.

[0008] As a preferred embodiment of the utility model: the center position of one side edge of the docking end plate is fixedly set at one end position of the rotating end block, the docking end plate and the supporting gasket are correspondingly set at one end position of the docking end plate and the matching screw block, and one end of the connecting screw is horizontally fixedly set at the center position of one end of the supporting center column.

[0009] As a preferred embodiment of the utility model: the mating screw blocks are all threadedly connected to the outer side of the connecting screw through the fixed screw hole in the center position, and the mating screw blocks and the rotating end blocks are arranged parallel to each other, the pressing blocks are symmetrically inserted in the side groove position of the mating screw block, and the plug-in end is connected and arranged at one end of the side of the flip block, and the end annular groove is annularly arranged near the outer side of the connecting screw.

[0010] As a preferred embodiment of the utility model: the limiting tooth ring is fixedly arranged in a ring shape at both ends of the supporting center column near the edge position, and the side edge of the limiting tooth ring extends to the inner side edge of the limiting tooth groove for tooth connection, the limiting grooves are all opened on the side edge of the outer thread of the connecting screw, one side edge of the end clamping ring is clamped on the inner side edge of the end annular groove, and the limiting tooth blocks are arranged in a ring shape and equidistantly arranged on the side edge of the docking end plate near the edge position.

[0011] As a preferred embodiment of the present utility model: the stabilizing tooth block and the limiting tooth block are tooth-connected with each other, the flip block is symmetrically clamped on the inner wall diameter of the matching screw block close to the grooves at both ends, the two ends of the supporting shaft rod are plugged on the inner wall of the matching screw block, one end of the clamping bevel block extends to the inner side edge of the fixing screw hole, and the extended end is clamped on the inner side edge of the limiting groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model sets the supporting center column horizontally at the position between the objects, allows the connecting screws at both ends to be horizontally inserted and set inside the installation hole, and then the matching screw block is threadedly connected and set at the outer end position of the connecting screw through the fixed screw hole at the center position, and after the matching screw block is rotated, the material is squeezed and moved in the direction of the rotating end block, so that the butt end plates and supporting gaskets on both sides of the material are squeezed and set at the side positions, and the side positioning pins are inserted and set at the side positions of the material to form a positioning operation, and after the stabilizing tooth block and the limiting tooth block are toothed with each other, the rotation operation between the butt end plate and the supporting gasket is effectively prevented, and the matching screw block is set through a specific workpiece sleeve. The outer edge allows the flip block to flip over after the pressing block is pressed, and after the engaging bevel block at one end is away from the limiting groove, the matching screw block can be rotated. After being fastened to the specified position, the flip block is flipped under the support of the support spring, so that one end of the engaging bevel block at one end extends and is engaged with the internal limit of the limiting groove, so that the matching screw block is limited and cannot rotate. Under the extrusion effect, the limiting tooth ring extends to the internal tooth connection of the limiting tooth groove, further limiting the rotation of the rotating end block. The use of multiple tooth connection limiting structures can effectively prevent the occurrence of rotation looseness. At the same time, the flip limiting structure further improves the limiting stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a stud bolt for preventing a nut from loosening;

[0016] Figure 2 It is a structural schematic diagram of the front view cross-sectional connection details of a supporting center column of a stud with a nut to prevent loosening;

[0017] Figure 3 It is a structural schematic diagram of the front view cross-sectional connection details of a rotating end block of a stud bolt for preventing a nut from loosening;

[0018] Figure 4 It is a structural schematic diagram of the front view cross-sectional connection details of a support gasket of a stud bolt for preventing a nut from loosening;

[0019] Figure 5 The present invention is a structural schematic diagram of the side view cross-sectional connection details of a mating screw block of a stud bolt for preventing a nut from loosening.

[0020] In the figure: 1. Supporting center column; 2. Rotating end block; 3. Docking end plate; 4. Supporting gasket; 5. Connecting screw; 6. Matching screw block; 7. Pressing block; 8. End annular groove; 9. Limiting tooth ring; 10. Limiting groove; 11. Through hole; 12. End clamping ring; 13. Limiting tooth groove; 14. Limiting tooth block; 15. Positioning pin; 16. Stabilizing tooth block; 17. Fixing screw hole; 18. Flipping block; 19. Supporting shaft; 20. Supporting spring; 21. Snap-on oblique block. DETAILED DESCRIPTION

[0021] See also Figure 1 In the embodiment of the utility model, a double-headed stud for preventing a nut from loosening comprises a supporting middle column 1, and a rotating end block 2 is symmetrically connected at both ends of the supporting middle column 1. The supporting middle column 1 is arranged in a polygonal column shape. There are two rotating end blocks 2, and one end of the two rotating end blocks 2 is connected to the open end of the end annular groove 8. The rotating end block 2 is sleeved on the outer side of the connecting screw 5 through a through hole 11 at the center position. The rotating end block 2 is welded with a docking end plate 3 at the end away from the supporting middle column 1. The docking end plate 3 is horizontally connected with a supporting gasket 4 at one side away from the rotating end block 2. The connecting screws 5 are horizontally symmetrically welded at both ends of the supporting middle column 1. The center of one side of the docking end plate 3 is The position is fixedly set at one end of the rotating end block 2, the docking end plate 3 and the supporting gasket 4 are correspondingly set at one end of the docking end plate 3 and the matching screw block 6, one end of the connecting screw rod 5 is horizontally fixedly set at the center position of one end of the supporting middle column 1, the outer side of the connecting screw rod 5 is threadedly connected with the matching screw block 6, and the side of the matching screw block 6 is symmetrically clamped with a pressing block 7, and the matching screw blocks 6 are all threadedly connected to the outer side of the connecting screw rod 5 through the fixed screw hole 17 at the center position, and the matching screw block 6 and the rotating end block 2 are arranged parallel to each other, and the pressing block 7 is symmetrically inserted in the side groove position of the matching screw block 6, and the plug-in end is connected and set at one end of the side of the flip block 18;

[0022] See also Figure 2-5In the embodiment of the utility model, a double-headed stud for preventing a nut from loosening is provided, wherein end annular grooves 8 are symmetrically provided at both ends of the supporting middle column 1, and the end annular grooves 8 are annularly arranged near the outer side of the connecting screw 5, and limited tooth rings 9 are symmetrically fixedly provided at both ends of the supporting middle column 1, and limited grooves 10 are evenly provided on the outer side of the connecting screw 5, and a through hole 11 is horizontally provided at the inner center position of the rotating end block 2, and an end clamping ring 12 is welded at the end of the rotating end block 2 away from the docking end disk 3, and a limited tooth groove 13 is provided at the end of the rotating end block 2 away from the docking end disk 3, and a limited tooth block 14 is evenly fixedly provided on a side of the docking end disk 3 away from the rotating end block 2, and the limited tooth ring 9 is annularly fixedly provided at both ends of the supporting middle column 1 near the edge position, and the side edge of the limited tooth ring 9 extends to the inner side edge of the limited tooth groove 13 for tooth connection, and the limited grooves 10 are all provided at the side edge position of the outer thread of the connecting screw 5, and one side edge of the end clamping ring 12 is clamped and provided in the end annular groove 8 The inner side of the mating end plate 3 is arranged in a ring-shaped and equidistant manner on the side of the mating end plate 3 near the edge. A positioning pin 15 is evenly welded on one side of the support gasket 4. A stabilizing tooth block 16 is evenly fixed on the side away from the positioning pin 15. A fixing screw hole 17 is horizontally opened at the center of the mating screw block 6. A flip block 18 is symmetrically connected to the inner side wall of the mating screw block 6. A support shaft 19 is horizontally inserted on the side of the flip block 18. The two ends of the support shaft 19 A support spring 20 is symmetrically fixedly sleeved on the end, a snap-on bevel block 21 is fixedly welded on one side of the flip block 18, the stabilizing tooth block 16 and the limiting tooth block 14 are tooth-connected with each other, the flip block 18 is symmetrically snap-connected on the inner wall diameter of the matching screw block 6 close to the groove positions at both ends, the two ends of the support shaft 19 are plugged into the inner wall of the matching screw block 6, one end of the snap-on bevel block 21 extends to the inner side edge of the fixing screw hole 17, and the extended end is snap-connected on the inner side edge of the limiting groove 10.

[0023] The working principle of the utility model is:

[0024] The supporting center column 1 is horizontally set between the objects, and the connecting screws 5 at both ends are horizontally inserted and set inside the mounting holes, and then the matching screw block 6 is threadedly connected to the outer end of the connecting screw 5 through the fixing screw hole 17 at the center position. After the matching screw block 6 is rotated, the extruded material moves in the direction of the rotating end block 2, so that the docking end plates 3 and the supporting gaskets 4 on both sides of the material are extruded and set at the side positions, and the side positioning pins 15 are inserted and set at the side positions of the material to form a positioning operation, and after the stabilizing tooth block 16 and the limiting tooth block 14 are toothed with each other, the rotation operation between the docking end plate 3 and the supporting gasket 4 is effectively prevented. The mating screw block 6 is operated by a specific workpiece sleeve arranged on the outer side of the mating screw block 6, so that after the pressing block 7 is pressed, the flip block 18 is flipped, and after the clamping bevel block 21 at one end is away from the limiting groove 10, the mating screw block 6 can be rotated, and after being fastened to the specified position, the flip block 18 is flipped under the support of the support spring 20, so that one end of the clamping bevel block 21 at one end extends and is clamped in the internal limit of the limiting groove 10, so that the mating screw block 6 is limited and cannot rotate, and under the extrusion effect, the limiting tooth ring 9 extends to the internal tooth connection of the limiting tooth groove 13, further limiting the rotation of the rotating end block 2.

[0025] What is described above 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-ended stud for preventing a nut from loosening, comprising a supporting center column (1), characterized in that: The two ends of the supporting center column (1) are symmetrically butted with rotating end blocks (2); the rotating end block (2) is welded with a butt end plate (3) at one end away from the supporting center column (1); the butt end plate (3) is horizontally butt-jointed with a supporting gasket (4) at one side away from the rotating end block (2); the two ends of the supporting center column (1) are horizontally butt-jointed with connecting screws (5); the outer side of the connecting screws (5) is threadedly connected with a matching screw block (6); the side of the matching screw block (6) is symmetrically clamped with a pressing block (7); the two ends of the supporting center column (1) are symmetrically provided with end annular grooves (8); the two ends of the supporting center column (1) are symmetrically fixed with limited tooth rings (9); the outer side of the connecting screw (5) is evenly provided with limited grooves (10); the inner center position of the rotating end block (2) is horizontally provided with a through hole (11); the rotating end block (2) is at a position away from the rotating end block (2). An end clamp ring (12) is welded to one end of the connecting end plate (3); a limiting tooth groove (13) is provided at the end of the rotating end block (2) away from the connecting end plate (3); a limiting tooth block (14) is evenly fixedly provided on the side of the connecting end plate (3) away from the rotating end block (2); a positioning pin (15) is evenly welded to one side of the supporting gasket (4); a stabilizing tooth block (16) is evenly fixedly provided on the side of the supporting gasket (4) away from the positioning pin (15); a fixing screw hole (17) is horizontally provided at the center of the matching screw block (6); a flip block (18) is symmetrically clamped to the inner side wall of the matching screw block (6); a supporting shaft rod (19) is horizontally inserted into the side of the flip block (18); support springs (20) are symmetrically fixedly sleeved at both ends of the supporting shaft rod (19); and a clamping inclined block (21) is fixedly welded to one side of the flip block (18).

2. A stud bolt for preventing a nut from loosening according to claim 1, characterized in that: The supporting center column (1) is arranged in the shape of a polygonal column, the number of the rotating end blocks (2) is two, and one end of the two rotating end blocks (2) is butt-jointedly arranged at the open end of the end annular groove (8), and the rotating end blocks (2) are sleeved and arranged on the outer side of the connecting screw rod (5) through a through hole (11) at the center position.

3. A stud bolt for preventing a nut from loosening according to claim 1, characterized in that: The center position of one side edge of the butt end plate (3) is fixedly arranged at one end position of the rotating end block (2), the butt end plate (3) and the supporting gasket (4) are both correspondingly arranged at one end position of the butt end plate (3) and the matching screw block (6), and one end of the connecting screw rod (5) is horizontally fixedly arranged at the center position of one end of the supporting center column (1).

4. A stud bolt for preventing a nut from loosening according to claim 1, characterized in that: The matching screw blocks (6) are all threadedly connected to the outer side of the connecting screw rod (5) through the fixing screw hole (17) at the center position, and the matching screw blocks (6) and the rotating end blocks (2) are arranged in parallel with each other. The pressing blocks (7) are symmetrically inserted in the side groove positions of the matching screw blocks (6), and the insertion end is connected and arranged at one end of the side of the flip block (18). The end annular groove (8) is annularly arranged near the outer side of the connecting screw rod (5).

5. A stud bolt for preventing a nut from loosening according to claim 1, characterized in that: The limiting tooth ring (9) is fixedly arranged in an annular shape at both ends of the supporting center column (1) near the edge position, and the side edge of the limiting tooth ring (9) extends to the inner side edge of the limiting tooth groove (13) for tooth connection, and the limiting groove (10) is opened on the outer side edge position of the connecting screw (5), and one side edge of the end clamping ring (12) is clamped and arranged on the inner side edge of the end annular groove (8), and the limiting tooth blocks (14) are arranged in an annular shape and equidistantly at the side edge of the docking end plate (3) near the edge position.

6. A stud bolt for preventing a nut from loosening according to claim 1, characterized in that: The stabilizing tooth block (16) and the limiting tooth block (14) are tooth-connected with each other, the flip block (18) is symmetrically clamped on the inner wall diameter of the matching screw block (6) close to the grooves at both ends, the two ends of the supporting shaft rod (19) are inserted into the inner wall of the matching screw block (6), one end of the clamping inclined block (21) extends to the inner side edge of the fixing screw hole (17), and the extended end is clamped on the inner side edge of the limiting groove (10).

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