A bolt and nut assembly for mechanical configuration

Abstract

The present invention discloses a bolt and nut assembly for mechanical configuration, comprising a screw head, a first dovetail block side wall fixedly connected to the side wall of a connecting plate vertical plate, a vertical rod is provided in a limit groove at the bottom end, the top end of the vertical rod passes through a plurality of inclined plates of the connecting plate in sequence and is inserted into the limit groove at the top end, the vertical rod is fixedly connected to the connecting plate, the vertical rod is slidably connected to the vertical plate, an L-shaped sliding rod is provided in the second groove, the L-shaped sliding rod cross bar passes through the vertical plate and extends to the outside, a reset spring is provided in the second dovetail groove, the inclined plate and the L-shaped plate are connected in a welding manner, the limit rod is made of alloy steel material, the wall thickness of the inclined plate is 3mm-5mm, and the fourth thread and the third thread can be moved to be staggered with the first thread for limit locking, thereby improving the stability of the connection between the bolt and the nut, playing an effective anti-slip effect, and also increasing the stability of the fourth thread and the third thread when working, thereby improving the stability of the device and meeting the use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical configuration, and in particular to a bolt and nut assembly for mechanical configuration. Background Art

[0002] Bolt: A mechanical part, a cylindrical threaded fastener equipped with a nut. It is a type of fastener consisting of a head and a screw (a cylinder with external threads). It needs to be matched with a nut and is used to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated. Therefore, the bolt connection is a detachable connection. Bolts are widely used in mechanical production and in most cases need to be used with nuts. After long-term use, the nuts of bolted connections are very easy to fall off due to various reasons, resulting in failure of the bolt connection, potential safety hazards, and failure to meet usage requirements. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a bolt and nut assembly for mechanical configuration.

[0004] The present invention is achieved through the following technical solutions:

[0005] A bolt and nut assembly for mechanical configuration, comprising a screw head, the outer cross-section of the screw head is a regular polygon, the inner cross-section of the screw head is a circle, a screw is fixedly connected directly below the screw head, a nut is provided directly below the screw, a cover is fixedly connected to the inner wall of the screw head, the top surface of the cover and the top surface of the screw head are in the same plane, the top surface of the cover is threadedly connected to a limiting bolt, the bottom end of the limiting bolt penetrates into the screw head, the bottom surface of the screw is in an arc-shaped cross-section, one side of the screw is fixedly connected with a plurality of first threads from bottom to top, one side of the inner wall of the nut is fixedly connected with a plurality of second threads from bottom to top, the second threads match the first threads, the screw is a hollow structure, a first keyway is provided on one side wall of the screw head, a second keyway is provided on one side wall of the nut, and the second The keyway corresponds to the first keyway, and a bearing is fixedly embedded in the inner bottom surface of the screw, and an internal threaded barrel is fixedly connected to the inner ring of the bearing. A T-shaped threaded rod is rotatably fitted in the internal threaded barrel, and the cross-section of the T-shaped threaded rod is circular. The top end of the vertical rod of the T-shaped threaded rod passes through the internal threaded barrel and penetrates into the screw head and is fixedly connected with a rubber protrusion. The vertical rod of the T-shaped threaded rod is threadedly connected to the internal threaded barrel, and the T-shaped threaded rod is slidably connected to the screw head. The bottom surface of the rubber protrusion fits with the inner bottom surface of the screw head, and the top surface of the rubber protrusion fits with the bottom surface of the limit bolt. A first compression spring is provided in the internal threaded barrel, and a plurality of third threads are fitted from bottom to top on the other side of the screw, and both ends of the third thread fit and match with one end of the adjacent first thread, and the side wall of the screw is inclined from bottom to top. A plurality of first through grooves are provided, an inclined plate is slidably arranged in the first through groove, the cross section of the inclined plate is fan-shaped, one end of the inclined plate is fixedly connected to the inner arc surface of the third thread, the other end of the inclined plate is inserted into the screw rod and fits with the outer wall of the internal thread barrel, a second slide groove is provided on the side wall of the vertical rod of the T-shaped threaded rod, the cross section of the second slide groove is dovetail-shaped, a first slider is fitted and slidably arranged in the second slide groove, the cross section of the first slider is dovetail-shaped, two first rubber blocks are fitted and slidably arranged in the second slide groove, the two first rubber blocks are arranged at both ends of the first slider and are fixedly connected to it, an L-shaped plate is fixedly connected to the side wall of the first slider, the cross section of the L-shaped plate is arc-shaped, the bottom end of the vertical plate of the L-shaped plate passes through a plurality of inclined plates in sequence and is fixedly connected to it, and a plurality of pairs of pairs of L-shaped plates are provided on the outer wall of the internal thread barrel from bottom to top. The first slide groove is provided with a second sliding block which is slidably fitted in the first slide groove, the cross-section of the second sliding block is dovetail-shaped, a second compression spring is provided in the first slide groove, multiple pairs of first slide grooves correspond to multiple inclined plates one by one, the side wall of the second sliding block is fixedly connected to the limiting rod, the limiting rod at the top of each pair of limiting rods is fitted and arranged on the top surface of the corresponding inclined plate, the inner wall of the screw rod has multiple pairs of first grooves from bottom to top, the multiple pairs of first grooves correspond to and communicate with multiple first through grooves one by one, the side wall of the limiting rod at the bottom end of each pair of limiting rods is fitted with the corresponding side wall of the inclined plate, one end of the bottom limiting rod in each pair of limiting rods penetrates into the corresponding first groove, the top limiting rod in each pair of limiting rods is arranged in the first through groove, the inner wall of the nut has a second groove, and a vertical plate is provided in the second groove,The cross-section of the vertical plate is an arc surface, the inner arc surface of the vertical plate and the inner wall of the nut are on the same arc surface, and a plurality of fourth threads are fitted and matched at the other side of the inner wall of the nut from bottom to top, and the two ends of the fourth thread are fitted and matched with one end of an adjacent second thread, and the side wall of the vertical plate is provided with a plurality of second through grooves from bottom to top, and a connecting plate is provided in the second groove, and the connecting plate cross-section is U-shaped, and the connecting plate inclined plate passes through the second groove and is fixedly connected to the fourth threaded side wall. The inner wall of the nut is provided with a first dovetail groove, and a first dovetail block is fitted and slidably provided in the first dovetail groove, and a second rubber block is provided in the first dovetail groove, and the bottom end of the second rubber block is fixedly connected to the top surface of the first dovetail block, and the side wall of the first dovetail block is fixedly connected to the side wall of the vertical plate of the connecting plate, and the inner surface of the vertical plate is provided with two limiting grooves, and a vertical rod is provided in the bottom limiting groove, and the top of the vertical rod The ends of the two plates are sequentially passed through multiple inclined plates of the connecting plate and inserted into the limiting grooves at the top ends, the vertical rod is fixedly connected to the connecting plate, the vertical rod is slidably connected to the vertical plate, and a second groove is provided in the second groove, the L-shaped sliding rod is provided, the L-shaped sliding rod cross bar passes through the vertical plate and extends to the outside, the cross section of one end of the L-shaped sliding rod cross bar is an inclined surface, the top surface of the connecting plate inclined plate is provided with a through hole, the top end of the L-shaped sliding rod vertical rod sequentially passes through multiple through holes, and the side wall of the L-shaped sliding rod vertical plate is fixedly connected to multiple limit blocks from bottom to top, the cross section of the limit block is a right-angled triangle, the bottom surface of the limit block is affixed with the top surface of the inclined plate of the connecting plate, the inner bottom surface of the nut is provided with a second dovetail groove, and a second dovetail block is affixed and slidably provided in the second dovetail groove, the top surface of the second dovetail block is fixedly connected to the bottom surface of the L-shaped sliding rod cross bar, the L-shaped sliding rod cross bar is slidably connected to the vertical plate, and a return spring is provided in the second dovetail groove.

[0006] Preferably, the inclined plate and the L-shaped plate are connected by welding.

[0007] Preferably, the limiting rod is made of alloy steel.

[0008] Preferably, the wall thickness of the inclined plate is 3mm-5mm.

[0009] Compared with the existing technology, the beneficial effects of the present invention are: the present device has a simple structure, diverse functions and strong practicality. By arranging a bearing, an internal thread barrel, a T-shaped threaded rod, a rubber protrusion, a first compression spring, an inclined plate, a first slider, a first rubber block, an L-shaped plate, a limit rod, a second slider, a second compression spring, a vertical plate, a connecting plate, a first dovetail block, a second rubber block, a vertical rod, an L-shaped sliding rod, a limit block, a second dovetail block and a reset spring, the fourth thread and the third thread can be moved to be offset from the first thread for limit locking, thereby improving the stability of the connection between the bolt and the nut, playing an effective anti-slip effect, and also increasing the stability of the fourth thread and the third thread when working, thereby improving the stability of the device and meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the structural diagram of the present invention;

[0011] Figure 2 It is a front view of the structure of the present invention;

[0012] Figure 3 It is a right side view of the structure of the present invention;

[0013] Figure 4 is an AA cross-sectional view of the structure of the present invention;

[0014] Figure 5 is a BB cross-sectional view of the structure of the present invention;

[0015] Figure 6 It is a schematic diagram of the installation of the structure of the present invention;

[0016] Figure 7 The structure of the present invention Figure 6 The main view of

[0017] Figure 8 It is an assembly stereoscopic structural diagram of the structure described in the present invention.

[0018] In the figure: screw head 1, screw rod 2, nut 3, cover plate 4, limit bolt 5, first thread 6, second thread 7, bearing 8, internal thread barrel 9, T-shaped thread rod 10, rubber protrusion 11, first compression spring 12, third thread 13, inclined plate 14, first slider 15, first rubber block 16, L-shaped plate 17, limit rod 18, second slider 19, second compression spring 20, vertical plate 21, fourth thread 22, connecting plate 23, first Dovetail block 24, second rubber block 25, vertical rod 26, L-shaped sliding rod 27, limit block 28, second dovetail block 29, return spring 30, first keyway 1-1, first through groove 2-1, first groove 2-2, second keyway 3-1, second groove 3-2, first dovetail groove 3-3, second dovetail groove 3-4, first slide groove 9-1, second slide groove 10-1, second through groove 21-1, limit groove 21-2, through hole 23-1. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0020] like Figure 1-Figure 8As shown, a bolt and nut assembly for mechanical configuration includes a screw head 1, the outer cross-section of the screw head 1 is a regular polygon, the inner cross-section of the screw head 1 is a circle, a screw rod 2 is fixedly connected directly below the screw head 1, a nut 3 is provided directly below the screw 2, a cover plate 4 is fixedly connected to the inner wall of the screw head 1, the top surface of the cover plate 4 and the top surface of the screw head 1 are in the same plane, a limiting bolt 5 is threadedly connected to the top surface of the cover plate 4, the bottom end of the limiting bolt 5 penetrates into the screw head 1, the bottom cross-section of the screw rod 2 is an arc, a plurality of first threads 6 are fixedly connected to one side of the screw rod 2 from bottom to top, a plurality of second threads 7 are fixedly connected to one side of the inner wall of the nut 3 from bottom to top, the second threads 7 match the first threads 6, the screw 2 is a hollow structure, and the screw head 1 A first key groove 1-1 is formed on one side wall, and a second key groove 3-1 is formed on one side wall of the nut 3, and the second key groove 3-1 corresponds to the first key groove 1-1. A bearing 8 is fixedly embedded in the inner bottom surface of the screw rod 2, and an internal thread barrel 9 is fixedly connected to the inner ring of the bearing 8. A T-shaped threaded rod 10 is fitted and rotated inside the internal thread barrel 9. The cross-section of the T-shaped threaded rod 10 is circular, and the top end of the vertical rod of the T-shaped threaded rod 10 passes through the internal thread barrel 9 and penetrates into the screw head 1 and is fixedly connected with a rubber protrusion 11. The vertical rod of the T-shaped threaded rod 10 is threadedly connected with the internal thread barrel 9, and the T-shaped threaded rod 10 is slidably connected with the screw head 1. The bottom surface of the rubber protrusion 11 fits with the inner bottom surface of the screw head 1, and the top surface of the rubber protrusion 11 fits with the bottom surface of the limit bolt 5. A first compression spring 12 is provided in the barrel 9, and a plurality of third threads 13 are fitted from bottom to top on the other side of the screw rod 2, and both ends of the third threads 13 fit and match with one end of the adjacent first threads 6, and a plurality of first through grooves 2-1 are tilted from bottom to top on the side wall of the screw rod 2, and an inclined plate 14 is slidably provided in the first through groove 2-1, and the cross section of the inclined plate 14 is fan-shaped, and one end of the inclined plate 14 is fixedly connected to the inner arc surface of the third thread 13, and the other end of the inclined plate 14 penetrates into the screw rod 2 and fits with the outer wall of the internal thread barrel 9, and a second slide groove 10-1 is provided on the side wall of the vertical rod of the T-shaped threaded rod 10, and the cross section of the second slide groove 10-1 is dovetail-shaped, and a first slider 15 is fitted and slidably provided in the second slide groove 10-1, and the cross section of the first slider 15 is The surface is dovetail-shaped, and two first rubber blocks 16 are fitted and slidably arranged in the second slide groove 10-1. The two first rubber blocks 16 are arranged at both ends of the first slider 15 and are fixedly connected thereto. The side wall of the first slider 15 is fixedly connected with an L-shaped plate 17, and the cross-section of the L-shaped plate 17 is arc-shaped. The bottom end of the vertical plate of the L-shaped plate 17 passes through multiple inclined plates 14 in sequence and is fixedly connected thereto. The outer wall of the internally threaded barrel 9 is provided with multiple pairs of first slide grooves 9-1 from bottom to top, and a second slider 19 is fitted and slidably arranged in the first slide groove 9-1. The cross-section of the second slider 19 is dovetail-shaped, and a second compression spring 20 is arranged in the first slide groove 9-1. Multiple pairs of first slide grooves 9-1 correspond one-to-one to multiple inclined plates 14, and the side wall of the second slider 19 is fixedly connected with a limiting rod 18.The top limiting rod 18 of each pair of limiting rods 18 is fitted and arranged on the top surface of the corresponding inclined plate 14, and the inner wall of the screw rod 2 is opened with multiple pairs of first grooves 2-2 from bottom to top, and the multiple pairs of first grooves 2-2 correspond to and communicate with multiple first through grooves 2-1 one by one, and the side wall of the limiting rod 18 at the bottom end of each pair of limiting rods 18 is fitted with the corresponding side wall of the inclined plate 14, and one end of the bottom limiting rod 18 of each pair of limiting rods 18 is inserted into the corresponding first groove 2-2, and the top limiting rod 18 of each pair of limiting rods 18 is arranged in the first through groove 2-1, and the inner wall of the nut 3 is opened with a second groove 3-2, and the second groove 3-2 is provided with a vertical plate 21, and the cross section of the vertical plate 21 is an arc surface. The inner arc surface of the vertical plate 21 is on the same arc surface as the inner wall of the nut 3, and a plurality of fourth threads 22 are fitted and matched with each other on the other side of the inner wall of the nut 3 from bottom to top, and the two ends of the fourth threads 22 are fitted and matched with one end of the adjacent second threads 7, and a plurality of second through grooves 21-1 are opened from bottom to top on the side wall of the vertical plate 21, and a connecting plate 23 is provided in the second groove 3-2, and the cross-section of the connecting plate 23 is U-shaped, and the inclined plate of the connecting plate 23 passes through the second groove 3-2 and is fixedly connected to the side wall of the fourth thread 22, and a first dovetail groove 3-3 is opened on the inner wall of the nut 3, and a first dovetail block 24 is fitted and slidably provided in the first dovetail groove 3-3, and a first dovetail block 24 is provided in the first dovetail groove 3-3 The second rubber block 25, the bottom end of the second rubber block 25 is fixedly connected to the top surface of the first dovetail block 24, the side wall of the first dovetail block 24 is fixedly connected to the side wall of the vertical plate of the connecting plate 23, the inner surface of the vertical plate 21 is provided with two limiting grooves 21-2, a vertical rod 26 is arranged in the limiting groove 21-2 at the bottom end, the top end of the vertical rod 26 passes through a plurality of inclined plates of the connecting plate 23 in sequence and is inserted into the limiting groove 21-2 at the top end, the vertical rod 26 is fixedly connected to the connecting plate 23, the vertical rod 26 is slidably connected to the vertical plate 21, an L-shaped sliding rod 27 is arranged in the second groove 3-2, the cross bar of the L-shaped sliding rod 27 passes through the vertical plate 21 and extends to the outside, and the cross bar of the L-shaped sliding rod 27 has an inclined cross section at one end The top surface of the connecting plate 23 inclined plate is provided with a through hole 23-1, and the top of the vertical rod of the L-shaped slide bar 27 passes through multiple through holes 23-1 in sequence. The side wall of the vertical plate of the L-shaped slide bar 27 is fixedly connected with multiple limit blocks 28 from bottom to top. The cross section of the limit block 28 is a right triangle. The bottom surface of the limit block 28 fits with the top surface of the inclined plate of the connecting plate 23. The inner bottom surface of the nut 3 is provided with a second dovetail groove 3-4. The second dovetail block 29 is fitted and slidably arranged in the second dovetail groove 3-4. The top surface of the second dovetail block 29 is fixedly connected with the bottom surface of the cross bar of the L-shaped slide bar 27. The cross bar of the L-shaped slide bar 27 is slidably connected with the vertical plate 21. The second dovetail groove 3-4 is provided with a reset spring 30.

[0021] The inclined plate 14 and the L-shaped plate 17 are connected by welding.

[0022] The limiting rod 18 is made of alloy steel.

[0023] The wall thickness of the inclined plate 14 is 3 mm to 5 mm.

[0024] Working principle: When mechanical equipment needs to be fixed by bolts, this device is used instead of traditional bolts for tightening and fixing. First, the screw head 1 is moved, and the screw head 1 drives the screw rod 2 to move and gradually pass through the reserved hole of the mechanical equipment. The screw rod 2 drives the first thread 6 to move, and the screw rod 2 drives the bearing 8 to move, and the bearing 8 drives the internal thread barrel 9 to move, and the internal thread barrel 9 drives the second slider 19 to move, and the second slider 19 drives the limiting rod 18 to move, and the limiting rod 18 drives the inclined plate 14 to move, and the inclined plate 14 drives the third thread 13 to move and gradually pass through the reserved hole. At this time, the top limiting rod 18 in each pair of limiting rods 18 limits the inclined plate 14, so that the inclined plate 14 cannot move up and down, and the inability of the inclined plate 14 to move makes the third thread 13 unable to move, thereby improving the third The stability of the thread 13 prevents the third thread 13 from shaking and ensures the normal operation of the third thread 13. Then, the nut 3 is moved to the bottom of the screw rod 2 and the nut 3 is rotated. The nut 3 drives the second thread 7 to rotate and move. The nut 3 drives the first dovetail block 24 to move and rotate. The first dovetail block 24 drives the connecting plate 23 to move. The connecting plate 23 drives the fourth thread 22 to rotate and move. The second thread 7 and the fourth thread 22 rotate and move gradually to engage with the first thread 6 and the third thread 13. The nut 3 drives the second dovetail block 29 to move. The second dovetail block 29 drives the L-shaped slide bar 27 to gradually move and fit with the bottom end of the screw rod 2. The screw rod 2 pushes the L-shaped slide bar 27 to move. The L-shaped slide bar 27 drives the second dovetail block 29 to move and squeeze the reset spring 30. The L-shaped slide bar 27 drives the limit block 28 to move and gradually separate from the top surface of the connecting plate 23. The limit block 28 separates from the connecting plate 23 and cancels the limit on the connecting plate 23, so that the connecting plate 23 can move. The nut 3 gradually moves upward and fits with the surface of the equipment and then stops moving, thereby achieving the fixation of the mechanical equipment. Then, the limit bolt 5 is unscrewed, and the limit bolt 5 gradually rotates and moves out of the screw head 1. The limit bolt 5 rotates out and cancels the limit on the rubber protrusion 11, so that the rubber protrusion 11 can move. At this time, the first compression spring 12 pushes the T-shaped threaded rod 10 to move. The top surface of the cross bar of the T-shaped threaded rod 10 fits with the inner top surface of the internal threaded barrel 9 and then stops moving. The T-shaped threaded rod 10 drives the rubber protrusion 11 to move, and the T-shaped threaded rod 10 drives the second A rubber block 16 moves, the first rubber block 16 pushes the first slider 15 to move, the first slider 15 drives the L-shaped plate 17 to move, the L-shaped plate 17 drives the inclined plate 14 to move, the inclined plate 14 drives the third thread 13 to move, and the limiting rod 18 at the top limits the inclined plate 14, so that the inclined plate 14 cannot move, thereby making the third thread 13 unable to move, and the T-shaped threaded rod 10 at this time continues to move upward to squeeze the first rubber block 16 to deform, the internal thread barrel 9 drives the second slider 19 to rotate, and the second slider 19 drives the limiting rod 18 to rotate, and the limiting rod 18 at the top of each pair of limiting rods 18 gradually rotates and separates from the top surface of the inclined plate 14, and the limiting rod 18 at the top of each pair of limiting rods 18 gradually rotates into the corresponding first groove 2-2,The limiting rod 18 at the bottom end of each pair of limiting rods 18 is fitted with the side wall of the inclined plate 14 and cannot move. The limiting rod 18 at the bottom end cannot move, so that the corresponding second slider 19 cannot move. The internal thread barrel 9 rotates to squeeze the corresponding second compression spring 20. When the limiting rod 18 at the top rotates and separates from the top surface of the inclined plate 14, the squeezed first rubber block 16 pushes the first slider 15 to move, the first slider 15 drives the L-shaped plate 17 to move, the L-shaped plate 17 drives the inclined plate 14 to move, and the inclined plate 14 drives the third thread 13 to move and gradually stagger with the first thread 6, gradually move and gradually separate from the side wall of the limiting rod 18 at the bottom, and the squeezed second compression spring 20 pushes the corresponding The second slider 19 moves, and the second slider 19 drives the limit rod 18 to move and gradually slide to the corresponding bottom surface of the inclined plate 14 to support the inclined plate 14, preventing the inclined plate 14 from moving downward, thereby increasing the stability of the inclined plate 14, and the third thread 13 drives the fourth thread 22 to move, and the fourth thread 22 drives the connecting plate 23 to move, and the connecting plate 23 drives the vertical rod 26 to move. The setting of the vertical rod 26 plays a guiding and supporting role in the movement of the connecting plate 23, thereby increasing the stability of the connecting plate 23, thereby indirectly increasing the strength of the fourth thread 22, and the connecting plate 23 drives the first dovetail block 24 to move and squeeze the second rubber block 25 to deform, and the fourth thread 22 gradually moves to stagger with the second thread 7, such as, Figure 6 , 7As shown, the third thread 13 and the fourth thread 22 move and stagger with the first thread 6 and the second thread 7 to realize mutual restriction and play a limiting role, so as to effectively prevent the screw 2 and the nut 3 from separating, increase the stability between the screw 2 and the nut 3, and realize the fixation of the device. After the device is fixed, it is necessary to ensure that the first keyway 1-1 corresponds to the second keyway 3-1, and the first keyway 1-1 corresponds to the second keyway 3-1 to ensure that the fourth thread 22 corresponds to the third thread 13. The elastic potential energy of the first compression spring 12 is sufficient to push the first rubber The rubber block 16 and the second rubber block 25 are deformed. When the equipment needs to be disassembled, the limiting bolt 5 is first screwed into the screw head 1, and the limiting bolt 5 pushes the rubber protrusion 11 to move, and the rubber protrusion 11 drives the T-shaped threaded rod 10 to move, and the T-shaped threaded rod 10 indirectly drives the inclined plate 14 to move. At this time, the limiting rod 18 at the bottom end of each pair of limiting rods 18 limits the inclined plate 14, so that the inclined plate 14 cannot move, and the movement of the T-shaped threaded rod 10 gradually drives the internal thread barrel 9 to rotate, and the internal thread barrel 9 indirectly drives the limiting rod 18 at the bottom end of each pair of limiting rods 18 to rotate. The first rubber block 16 is squeezed into the first groove 2-2, the limiting rod 18 at the bottom is separated from the corresponding inclined plate 14 to cancel the limit thereof, the squeezed first rubber block 16 indirectly pushes the inclined plate 14 to move, the internal thread barrel 9 indirectly drives the limiting rod 18 at the top of each pair of limiting rods 18 to rotate and move to the top surface of the inclined plate 14 to limit it, the squeezed first rubber block 16 and the second rubber block 25 indirectly push the third thread 13 and the fourth thread 22 to move and reset, and then the nut 3 is screwed, the nut 3 indirectly drives the second thread 7 and the fourth thread 22 to rotate and gradually separate from the first thread 7 and the fourth thread 22. The thread 6 and the third thread 13 are separated, and the nut 3 indirectly slides out of the screw rod 2. At this time, the squeezed return spring 30 indirectly pushes the limit block 28 to move to limit the connecting plate 23, so that the connecting plate 23 cannot move, thereby indirectly making the four threads 22 unable to move, increasing the stability of the four threads 22, facilitating reuse, and realizing the disassembly of the mechanical equipment. The setting of the first compression spring 12, the first rubber block 16, the second compression spring 20, the second rubber block 25 and the return spring 30 plays an effective resetting role to ensure the normal operation of the device.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bolt and nut assembly for mechanical configuration, comprising a screw head (1), wherein the outer cross-section of the screw head (1) is a regular polygon, the inner cross-section of the screw head (1) is a circle, a screw rod (2) is fixedly connected directly below the screw head (1), a nut (3) is provided directly below the screw rod (2), a cover plate (4) is fixedly connected to the inner wall of the screw head (1), the top surface of the cover plate (4) and the top surface of the screw head (1) are in the same plane, a limit bolt (5) is threadedly connected to the top surface of the cover plate (4), the bottom end of the limit bolt (5) penetrates into the screw head (1), and the The bottom surface cross-section of the screw rod (2) is arc-shaped, a plurality of first threads (6) are fixedly connected from bottom to top on one side of the screw rod (2), a plurality of second threads (7) are fixedly connected from bottom to top on one side of the inner wall of the nut (3), the second threads (7) match the first threads (6), the screw rod (2) is a hollow structure, a first keyway (1-1) is formed on one side wall of the screw head (1), a second keyway (3-1) is formed on one side wall of the nut (3), the second keyway (3-1) corresponds to the first keyway (1-1), and is characterized in that: A bearing (8) is fixedly embedded in the inner bottom surface of the screw rod (2); an inner ring of the bearing (8) is fixedly connected to an internal thread barrel (9); a T-shaped threaded rod (10) is fitted and rotated inside the internal thread barrel (9); the cross section of the T-shaped threaded rod (10) is circular; the top end of the vertical rod of the T-shaped threaded rod (10) passes through the internal thread barrel (9) and penetrates into the screw head (1) and is fixedly connected to a rubber protrusion (11); the vertical rod of the T-shaped threaded rod (10) is threadedly connected to the internal thread barrel (9); the T-shaped threaded rod (10) is slidably connected to the screw head (1); the bottom surface of the rubber protrusion (11) is fitted with the inner bottom surface of the screw head (1); the top surface of the rubber protrusion (11) is fitted with the bottom surface of the limit bolt (5); a first compression spring is provided inside the internal thread barrel (9). (12), the other side of the screw rod (2) is fitted with a plurality of third threads (13) from bottom to top, and the two ends of the third threads (13) are fitted and matched with one end of the adjacent first threads (6), and the side wall of the screw rod (2) is inclined from bottom to top with a plurality of first through grooves (2-1), and a slanted plate (14) is slidably arranged in the first through groove (2-1), and the cross section of the slanted plate (14) is fan-shaped, and one end of the slanted plate (14) is fixedly connected to the inner arc surface of the third threads (13), and the other end of the slanted plate (14) is inserted into the screw rod (2) and fits with the outer wall of the internal thread barrel (9), and the side wall of the vertical rod of the T-shaped threaded rod (10) is provided with a second slide groove (10-1), and the cross section of the second slide groove (10-1) is dovetail-shaped, and the second slide groove ( A first sliding block (15) is provided in the second sliding groove (10-1) for sliding fit, and the cross section of the first sliding block (15) is dovetail-shaped. Two first rubber blocks (16) are provided in the second sliding groove (10-1) for sliding fit, and the two first rubber blocks (16) are arranged at both ends of the first sliding block (15) and are fixedly connected thereto. An L-shaped plate (17) is fixedly connected to the side wall of the first sliding block (15), and the cross section of the L-shaped plate (17) is arc-shaped. The bottom end of the vertical plate of the L-shaped plate (17) passes through a plurality of inclined plates (14) in sequence and is fixedly connected thereto. A plurality of pairs of first sliding grooves (9-1) are provided on the outer wall of the internally threaded barrel (9) from bottom to top. A second sliding block (19) is provided in the first sliding groove (9-1) for sliding fit, and the cross section of the second sliding block (19) is dovetail-shaped. A second compression spring (20) is provided in the first slide groove (9-1), and a plurality of pairs of first slide grooves (9-1) correspond one-to-one to a plurality of inclined plates (14). The side wall of the second sliding block (19) is fixedly connected to a limiting rod (18), and the limiting rod (18) at the top end of each pair of limiting rods (18) is arranged on the top surface of the corresponding inclined plate (14). The inner wall of the screw rod (2) is provided with a plurality of pairs of first grooves (2-2) from bottom to top, and the plurality of pairs of first grooves (2-2) correspond one-to-one to and communicate with the plurality of first through grooves (2-1). The side wall of the limiting rod (18) at the bottom end of each pair of limiting rods (18) is fitted with the side wall of the corresponding inclined plate (14), and one end of the limiting rod (18) at the bottom end of each pair of limiting rods (18) is inserted into the corresponding first groove (2-2).The top limiting rod (18) of each pair of limiting rods (18) is arranged in the first through groove (2-1); the inner wall of the nut (3) is provided with a second groove (3-2); a vertical plate (21) is arranged in the second groove (3-2); the cross section of the vertical plate (21) is an arc surface; the inner arc surface of the vertical plate (21) and the inner wall of the nut (3) are on the same arc surface; a plurality of fourth threads (22) are fitted from bottom to top on the other side of the inner wall of the nut (3); two ends of the fourth threads (22) fit and match with one end of an adjacent second thread (7); a plurality of second through grooves (21-1) are arranged on the side wall of the vertical plate (21) from bottom to top; the second grooves (3-2 ) is provided with a connecting plate (23), the cross section of the connecting plate (23) is U-shaped, the inclined plate of the connecting plate (23) passes through the second groove (3-2) and is fixedly connected to the side wall of the fourth thread (22), the inner side wall of the nut (3) is provided with a first dovetail groove (3-3), a first dovetail block (24) is slidably fitted in the first dovetail groove (3-3), a second rubber block (25) is provided in the first dovetail groove (3-3), the bottom end of the second rubber block (25) is fixedly connected to the top surface of the first dovetail block (24), the side wall of the first dovetail block (24) is fixedly connected to the side wall of the vertical plate of the connecting plate (23), and the inner surface of the vertical plate (21) is provided with two limit grooves (21-2), a vertical rod (26) is provided in the bottom limiting groove (21-2), the top end of the vertical rod (26) passes through the multiple inclined plates of the connecting plate (23) in sequence and is inserted into the limiting groove (21-2) at the top end, the vertical rod (26) is fixedly connected to the connecting plate (23), the vertical rod (26) is slidably connected to the vertical plate (21), an L-shaped sliding rod (27) is provided in the second groove (3-2), the cross bar of the L-shaped sliding rod (27) passes through the vertical plate (21) and extends to the outside, one end of the cross bar of the L-shaped sliding rod (27) is an inclined surface, the top surface of the inclined plate of the connecting plate (23) is provided with a through hole (23-1), the top end of the vertical rod of the L-shaped sliding rod (27) is arranged according to the The nut (3) passes through a plurality of through holes (23-1) at a time, and the side wall of the vertical plate of the L-shaped slide bar (27) is fixedly connected to a plurality of limit blocks (28) from bottom to top. The cross section of the limit block (28) is a right triangle. The bottom surface of the limit block (28) fits with the top surface of the inclined plate of the connecting plate (23). The inner bottom surface of the nut (3) is provided with a second dovetail groove (3-4). A second dovetail block (29) is slidably fitted in the second dovetail groove (3-4). The top surface of the second dovetail block (29) is fixedly connected to the bottom surface of the cross bar of the L-shaped slide bar (27). The cross bar of the L-shaped slide bar (27) is slidably connected to the vertical plate (21). A return spring (30) is provided in the second dovetail groove (3-4).

2. A bolt and nut assembly for mechanical configuration according to claim 1, characterized in that: The inclined plate (14) and the L-shaped plate (17) are connected by welding.

3. The bolt and nut assembly for mechanical configuration according to claim 1, characterized in that: The limiting rod (18) is made of alloy steel material.

4. The bolt and nut assembly for mechanical configuration according to claim 1, characterized in that: The wall thickness of the inclined plate (14) is 3 mm to 5 mm.

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