CN115325004A - But quick assembly disassembly's bolt and nut subassembly - Google Patents

Abstract

The invention discloses a bolt-nut assembly capable of being quickly disassembled and assembled, which comprises a nut head and a nut, wherein a guide rod is connected with a first cylinder in a sliding manner, the surface of a screw rod is provided with a plurality of first through grooves from bottom to top, the arc rod is in a sickle shape, one end of the arc rod is attached to the bottom surface of a second circular ring, the top end of a vertical rod penetrates through two cross rods and sequentially penetrates through an external thread pipe and the nut head to extend to the outside, the inner arc surface of an arc plate is a frosted surface, the elastic force of a reset spring is far greater than that of a second compression spring, the arc length of the second thread is equal to that of the first thread, the wall thickness of the first cylinder is 3mm-5mm, the arc length of the second thread is 1/8 circle, the quick disassembling and assembling of the first thread and the second thread can be realized, the disassembling and assembling of the screw rod and the nut are indirectly realized, the disassembling and the time and labor are saved, and the using requirements are met.

Description

Bolt and nut assembly capable of being rapidly disassembled and assembled

Technical Field

The invention relates to the technical field of fasteners, in particular to a bolt and nut assembly capable of being quickly disassembled and assembled.

Background

The bolt is used for fastening and connecting two parts with through holes, the bolt is required to be matched with the nut under most conditions, the length of the bolt cannot be accurately mastered, the bolt cannot be connected and fixed when being short, and a worker needs to waste a large amount of time to twist the nut to move a long distance to be attached and fixed with equipment when the bolt is long, so that time and labor are wasted, and the using requirement cannot be met.

Disclosure of Invention

In order to solve the existing problems, the invention provides a bolt and nut assembly capable of being quickly disassembled and assembled.

The invention is realized by the following technical scheme:

a bolt and nut assembly capable of being quickly disassembled and assembled comprises a nut head and a nut, wherein the nut head is hollow, a screw rod is fixedly connected to the bottom end of the nut head, the top end of the screw rod is of a hollow structure, a plurality of first threads are fixedly connected to the inner wall of the nut from bottom to top in an annular mode, the arc length of each first thread is 1/8 of a circle, the cross section of one end of each first thread is arc-shaped, a clamping block is fixedly connected between every two adjacent first threads in the vertical direction and is arranged on one side of the surface of each first thread, two pairs of sliding grooves are symmetrically formed in the inner wall of the screw rod, the cross section of each sliding groove is dovetail-shaped, a sliding block matched with the sliding grooves is arranged in the sliding grooves in a laminating and sliding mode, two first rings are arranged in the screw rod in a laminating and rotating mode from bottom to top, the first rings are arranged between every pair of sliding blocks and are fixedly connected with the sliding blocks, and the sliding grooves are arc-shaped, the first compression spring is attached and arranged in the sliding groove, the first barrel is arranged between the two first rings, the first barrel is not contacted with the first rings, the top surface of the first ring at the bottom end is fixedly connected with a plurality of guide rods in an annular manner, the cross section of each guide rod is square, the top end of each guide rod penetrates through the first barrel and is fixedly connected with the bottom surface of the first ring at the top end, the guide rods are slidably connected with the first barrel, the surface of the screw rod is provided with a plurality of first through grooves from bottom to top, the first through grooves are internally provided with connecting rods in a sliding manner, one end of each connecting rod penetrates through the first through groove and is fixedly connected with the outer wall of the first barrel, the outer wall of the screw rod is annularly attached and provided with a plurality of second threads from bottom to top, the other end of each connecting rod penetrates through the first through groove and extends to the outside and is fixedly connected with the inner arc surface of the second threads, the cross section of the second threads is arc-shaped, and the second threads are matched with the first threads, the cross section of one end of the second thread is arc-shaped, an internal thread cylinder is fixedly connected in the first cylinder, an external thread pipe matched with the internal thread cylinder is arranged in the internal thread cylinder, the top end of the external thread pipe penetrates through the first circular ring and penetrates out of the screw rod and penetrates into the screw head, the bottom end of the external thread pipe penetrates through the first circular ring at the bottom end, the external thread pipe is not in contact with the first circular ring, two first one-way bearings are fixedly sleeved on the external thread pipe, the first one-way bearing at the top end is fixedly embedded in the internal top surface of the screw head, the first one-way bearing at the bottom end is fixedly embedded in the internal bottom surface of the screw rod, a second one-way bearing is fixedly sleeved on the external thread pipe, the rotating direction of the second one-way bearing is opposite to that of the first one-way bearing, a brake ring is fixedly sleeved on the second one-way bearing, dovetail grooves are respectively formed in the internal bottom surface and the internal top surface of the screw head, and a dovetail block is arranged in the dovetail grooves in a fitting and sliding manner, the dovetail groove is internally provided with a reset spring which is a compression spring, an arc plate is fixedly connected between the two dovetail blocks, a brake pad is fixedly embedded into the inner arc surface of the arc plate, the inner arc surface of the brake pad is attached to the surface of a brake ring, only one side of the bottom surface of the arc plate is an inclined surface, a second barrel is sleeved on the external thread pipe, the second barrel is arranged in a screw head, the outer arc surface of the second barrel is attached to the inner wall of the screw head, the top surface of the second barrel is an inclined surface, the diameter of the top surface of the second barrel is gradually reduced from bottom to top, the top surface of the second barrel is attached to the inclined surface of the bottom surface of the arc plate, a second compression spring is sleeved on the external thread pipe, the second compression spring is arranged in the first barrel, the bottom end of the second compression spring is attached to the top surface of the internal thread barrel, and the top end of the second compression spring is attached to the bottom surface of the first ring at the top end, the utility model discloses a spring grinding device, including first barrel, first ring, U-shaped pole, first barrel inner wall fixedly connected with second ring, be equipped with a plurality of U-shaped poles under the second ring, U-shaped pole and external screw thread pipe fixed connection, swivelling joint has the arc pole on the U-shaped pole, arc pole one end and the laminating of second ring bottom surface, the arc pole other end passes the second ring, the cover has the third barrel on the external screw thread pipe, third barrel internal diameter reduces gradually from bottom to top, third barrel inner wall and arc pole surface laminating, be equipped with the montant in the external screw thread pipe, external screw thread pipe outer wall symmetry is opened has two pairs of second to lead to the groove, the laminating is slided and is equipped with two horizontal poles in the external screw thread pipe, and the horizontal pole both ends of bottom all wear out the second through groove and with third barrel inner wall fixed connection, the horizontal pole both ends on the montant top all wear out the second through groove and with second barrel inner wall fixed connection, the montant top passes external screw thread pipe and the nipple in proper order and stretches to the outside, the montant top is in the same plane with the top surface of screw rod, the rotatory spring grinding force of spring is greater than the arc spring thread, and the curved surface is big-shaped spring grinding force far away from the arc, and is equal.

Preferably, the wall thickness of the first cylinder is 3mm-5mm.

Preferably, the second thread has an arc length of 1/8 of a circle.

Preferably, the arc-shaped rod is sickle-shaped.

Compared with the prior art, the invention has the beneficial effects that: this device simple structure, the function is various, therefore, the clothes hanger is strong in practicability, through setting up the slider, first ring, first compression spring, first barrel, the guide bar, the connecting rod, the internal thread section of thick bamboo, the external screw thread pipe, first one-way bearing, the one-way bearing of second, the brake ring, the dovetail piece, reset spring, the arc, the brake block, the second barrel, second compression spring, the second ring, the U-shaped pole, the arc, the third barrel, montant and horizontal pole can realize the quick assembly disassembly between first screw thread and the second screw thread, the split between screw rod and the nut has been realized indirectly, dismouting process labour saving and time saving, satisfy the user demand.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a front view of the structure of the present invention;

FIG. 3 is a partial top view of the structure of the present invention;

FIG. 4 isbase:Sub>A cross-sectional view A-A of the structure of the present invention;

FIG. 5 is a sectional view taken along line B-B of the structure of the present invention and a partial enlarged view thereof;

FIG. 6 is a C-C cross-sectional view of the structure of the present invention;

FIG. 7 is an enlarged view of a portion of the structure of the present invention;

FIG. 8 is a schematic view of the installation of the structure of the present invention;

FIG. 9 is a schematic view of the installation of the structure of the present invention;

fig. 10 is a schematic exploded view of the structure of the present invention.

In the figure: the device comprises a screw head 1, a screw rod 2, a nut 3, a first thread 4, a clamping block 5, a sliding block 6, a first circular ring 7, a first compression spring 8, a first cylinder 9, a guide rod 10, a connecting rod 11, a second thread 12, an internal thread cylinder 13, an external thread pipe 14, a first one-way bearing 15, a second one-way bearing 16, a brake ring 17, a dovetail block 18, a return spring 19, an arc-shaped plate 20, a brake pad 21, a second cylinder 22, a second compression spring 23, a second circular ring 24, a U-shaped rod 25, an arc-shaped rod 26, a third cylinder 27, a vertical rod 28, a cross rod 29, a dovetail groove 1-1, a sliding groove 2-1, a first through groove 2-2 and a second through groove 14-1.

Detailed Description

The invention is described in further detail below with reference to the following figures and embodiments:

as shown in fig. 1-10, a bolt-nut assembly capable of being rapidly disassembled and assembled comprises a screw head 1 and a nut 3, wherein the screw head 1 is hollow, a screw rod 2 is fixedly connected to the bottom end of the screw head 1, the top end of the screw rod 2 is of a hollow structure, a plurality of first threads 4 are fixedly connected to the inner wall of the nut 3 from bottom to top in an annular manner, the arc length of each first thread 4 is 1/8 circle, the cross section of one end of each first thread 4 is arc-shaped, a clamping block 5 is fixedly connected between every two adjacent first threads 4 in the vertical direction, the clamping block 5 is arranged on one side of the surface of each first thread 4, two pairs of sliding grooves 2-1 are symmetrically arranged on the inner wall of the screw rod 2, the cross section of each sliding groove 2-1 is dovetail-shaped, a sliding block 6 matched with the sliding grooves 2-1 is arranged in a laminating manner in a sliding manner, two first rings 7 are rotationally arranged in the screw rod 2 from bottom to top in a laminating manner, the first rings 7 are arranged between every pair of sliding blocks 6, the sliding blocks 6 are fixedly connected with the first rings 7, a connecting rod 7 is arranged in a sliding manner, a first ring 7 is arranged in a sliding manner, a first sliding groove 2-1, a first ring 7 is arranged in a first ring 7, a first ring connecting rod 10, a first guiding rod 10 is arranged on the top end of a first guiding cylinder, a first guiding rod, a first guiding cylinder 2, a connecting rod 10 is arranged on the top end of the sliding groove 10, a first cylinder 7, a connecting rod, a first guiding cylinder 7, a connecting rod 10 is connected with a first guiding cylinder, a first guiding cylinder 7, a first guiding rod 10, a first guiding cylinder 10 is arranged on the top of the first guiding cylinder, a connecting rod, a first cylinder 7, a first guiding cylinder 7, a connecting rod 10, a connecting rod is arranged on the first guiding cylinder 7, a connecting rod 10, the outer wall of the screw rod 2 is annularly provided with a plurality of second threads 12 in a laminating manner from bottom to top, the other end of the connecting rod 11 penetrates out of the first through groove 2-2 and extends to the outside and is fixedly connected with the inner arc surface of the second thread 12, the section of the second thread 12 is arc-shaped, the second thread 12 is matched with the first thread 4, the section of one end of the second thread 12 is arc-shaped, the first cylinder 9 is internally and fixedly connected with an internal thread cylinder 13, an external thread pipe 14 matched with the internal thread cylinder 13 is arranged in the internal thread cylinder 13, the top end of the external thread pipe 14 penetrates through the first circular ring 7 and penetrates through the screw rod 2 and penetrates into the screw head 1, the bottom end of the external thread pipe 14 penetrates through the first circular ring 7 at the bottom end, the external thread pipe 14 is not in contact with the first circular ring 7, the external thread pipe 14 is fixedly provided with two first one-way bearings 15, the first one-way bearing 15 at the top end is fixedly embedded into the inner top surface of the screw head 1, the first one-way bearing 15 at the bottom end is fixedly embedded into the inner bottom surface of the screw rod 2, the dovetail groove 14 is fixedly provided with a second one-way bearing 16, the inner dovetail groove 16, the one-way bearing 17 is arranged on one-way compression spring, the inner dovetail groove 17, the inner dovetail groove 16 is arranged on one-way compression spring, the inner dovetail groove 17, the inner dovetail groove is arranged on one-way bearing 17, the brake spring is arranged on one-way bearing 17, the inner dovetail groove 1 side of the brake arc-1 side of the brake spring, the brake spring is arranged on the brake spring 17, the inner dovetail groove, the brake spring 17, the inner dovetail groove 17, the brake spring 17, the inner dovetail groove is arranged on the brake spring 17, the brake spring is arranged on the brake spring, the inner dovetail groove 1, the inner dovetail groove 17, the inner side of the brake spring is arranged on the brake spring 17, the extrados of second barrel 22 laminates with spiral shell head 1 inner wall, second barrel 22 top surface is the inclined plane, second barrel 22 top surface diameter reduces gradually from bottom to top, the laminating of second barrel 22 top surface and 20 bottom surfaces inclined planes of arc, the cover has second compression spring 23 on the external screw pipe 14, second compression spring 23 sets up in first barrel 9, the laminating of second compression spring 23 bottom and internal thread section of thick bamboo 13 top surface, the laminating of second compression spring 23 top and the first ring 7 bottom surface on top, first barrel 9 inner wall fixedly connected with second ring 24, be equipped with a plurality of U-shaped poles 25 under the second ring 24, U-shaped pole 25 and external screw pipe 14 fixed connection, the rotatory arc pole 26 that is connected on U-shaped pole 25, arc pole 26 one end laminates with second ring 24 bottom surfaces, the other end of the arc-shaped rod 26 passes through the second ring 24, the outer threaded pipe 14 is sleeved with a third barrel 27, the inner diameter of the third barrel 27 is gradually reduced from bottom to top, the inner wall of the third barrel 27 is attached to the surface of the arc-shaped rod 26, a vertical rod 28 is arranged in the outer threaded pipe 14, the outer wall of the outer threaded pipe 14 is symmetrically provided with two pairs of second through grooves 14-1, two transverse rods 29 are arranged in the outer threaded pipe 14 in a sliding manner, the two ends of the transverse rod 29 at the bottom end penetrate through the second through grooves 14-1 and are fixedly connected with the inner wall of the third barrel 27, the two ends of the transverse rod 29 at the top end penetrate through the second through grooves 14-1 and are fixedly connected with the inner wall of the second barrel 22, the top end of the vertical rod 28 passes through the two transverse rods 29 and sequentially passes through the outer threaded pipe 14 and the screw head 1 to extend to the outside, the top end of the vertical rod 28 and the top surface of the screw head 1 are positioned on the same plane, the cross section of the vertical rod 28 is circular, the vertical rod 28 is fixedly connected with the transverse rods 29, the screw rod 2 is worn out to the montant 28 bottom and is stretched to the outside, montant 28 respectively with spiral shell head 1, screw rod 2 swivelling joint, the cambered surface is the frosting in the arc 20, reset spring 19 elasticity dynamics is greater than second compression spring 23 elasticity dynamics far away, second screw thread 12 equals with first screw thread 4 arc length.

The wall thickness of the first cylinder 9 is 3mm-5mm.

The arc length of the second thread 12 is 1/8 of a circle.

The curved bars 26 are sickle-shaped.

The working principle is as follows: when the equipment needs to be fixed, the device replaces the traditional bolt and nut for fixing, firstly, the nut 3 is attached to the surface of the equipment, then the screw head 1 is moved, the screw head 1 drives the screw rod 2 to move through the reserved hole of the equipment, the screw head 1 drives the screw rod 2 to move through the nut 3, the screw rod 2 drives the first one-way bearing 15 to move, the first one-way bearing 15 drives the external thread pipe 14 to move, the external thread pipe 14 drives the internal thread pipe 13 to move and extrude the second compression spring 23 to generate elastic deformation, the internal thread pipe 13 drives the first cylinder 9 to move, the first cylinder 9 drives the connecting rod 11 to move, the connecting rod 11 drives the second thread 12 to move and pass through between two adjacent first threads 4 of the nut 3, when the bottom surface of the screw head 1 is attached to the surface of the equipment, the movement is stopped due to the different thicknesses of the equipment, the second thread 1 can not be matched with the first threads 4, if the second thread 12 is not matched with the first thread 4, the first thread 4 can block the second thread 12 to make the second thread 12 unable to rotate, at this time, the worker twists the screw head 1 to rotate, the screw head 1 drives the screw rod 2 to rotate and extrude the first compression spring 8 to deform, the screw head 1 drives the first one-way bearing 15 to rotate, at this time, the outer ring of the first one-way bearing 15 drives the inner ring thereof to rotate, the inner ring of the first one-way bearing 15 drives the outer threaded pipe 14 to rotate, the outer threaded pipe 14 drives the inner ring of the second one-way bearing 16 to rotate, the outer threaded pipe 14 rotates and drives the inner threaded pipe 13 to move, the inner threaded pipe 13 drives the first cylinder 9 to move, the first cylinder 9 drives the connecting rod 11 to move, the connecting rod 11 drives the second thread 12 to move upwards to be staggered with the first thread 4, when the second thread 12 moves to be staggered with the first thread 4, the first thread 4 can no longer limit the second thread 12, enabling second thread 12 to rotate, enabling screw 2 to drive first compression spring 8 to rotate, enabling first compression spring 8 to push sliding block 6 to rotate, enabling sliding block 6 to drive first circular ring 7 to rotate, enabling first circular ring 7 to drive guide rod 10 to rotate, enabling guide rod 10 to drive first cylinder 9 to rotate, enabling first cylinder 9 to indirectly drive second thread 12 to rotate and be clamped between two vertically adjacent first threads 4, enabling clamping block 5 to limit second thread 12, preventing second thread 12 from separating from first thread 4 when in screwing, enabling first thread 4 to limit second thread 12 when second thread 12 is clamped between two adjacent first threads 4, enabling second thread 12 to be incapable of moving longitudinally, disabling second thread 12 to move, disabling connecting rod 11 to move, disabling first cylinder 9 to move, enabling first cylinder 9 to move so that female thread cylinder 13 cannot move, enabling threaded pipe 14 to be fixed with screw head 1 and screw 2 through first one-way bearing 15, disabling female thread 14 to move so that male thread 14 cannot move when second thread 12 is clamped between two adjacent first and adjacent first threads 4, enabling one-way bearing 14 to be connected with screw 2 to enable one-way bearing 14 to move indirectly, enabling one-way bearing 14 to enable one-way nut 14 to be connected with screw 2 to enable one-way bearing 14 to be connected with screw 2, thus enabling one-way bearing 14 to enable one-way bearing 14 to move to enable one-way bearing to enable one-way rotation of screw to enable screw to only, the vertical rod 28 drives the cross rod 29 to move, the cross rod 29 drives the second cylinder 22 to move, the second cylinder 22 moves to push the arc plate 20 to move transversely, the arc plate 20 drives the dovetail block 18 to move to extrude the return spring 19 to deform, the arc plate 20 drives the brake pad 21 to move to separate from the brake ring 17, so that the brake ring 17 can rotate, the brake ring 17 can rotate to enable the outer ring of the second one-way bearing 16 to rotate, at the moment, the second compression spring 23 has a tendency of pushing the internal thread cylinder 13 to move downwards, so that the external thread pipe 14 has a tendency of rotating, the external thread pipe 14 indirectly drives the second thread 12 to move downwards to be tightly clamped on the first thread 4, the stability between the second thread 12 and the first thread 4 is ensured, the second thread 12 and the first thread 4 are prevented from loosening, as shown in fig. 8, when the first thread 4 is matched with the second thread 12, at the moment, the first thread 4 can not limit the second thread 12, so that the second thread 12 can rotate, the screw head 1 indirectly drives the second thread 12 to rotate and clamp to fix the equipment, then the vertical rod 28 is pushed, the vertical rod 28 indirectly drives the brake pad 21 to separate from the brake ring 17, as shown in fig. 9, so that the second thread 12 indirectly moves downwards to be tightly clamped on the first thread 4, the stability between the second thread 12 and the first thread 4 is ensured, because the elastic force of the return spring 19 is far greater than that of the second compression spring 23, the second cylinder 22 is prevented from separating from the arc-shaped plate 20, when the equipment needs to be disassembled, the nut 3 is screwed, the nut 3 drives the first thread 4 to rotate and gradually separate from the second thread 12, and after the first thread 4 is separated from the second thread 12, the first thread 4 cancels the limit of the second thread 12, the second compression spring 23 pushes the internal thread cylinder 13 to move downwards, the internal thread cylinder 13 drives the first cylinder 9 to move, the first cylinder 9 indirectly drives the second thread 12 to move downwards, when the first cylinder 9 is attached to the top surface of the first ring 7 at the bottom end, the movement is stopped, as shown in fig. 10, then the vertical rod 28 is pressed, the vertical rod 28 drives the cross rod 29 to move, the cross rod 29 drives the second cylinder 22 to move and separate from the arc-shaped plate 20, at the moment, the extruded return spring 19 pushes the dovetail block 18 to move, the dovetail block 18 drives the arc-shaped plate 20 to move, the arc-shaped plate 20 drives the brake pad 21 to move and attach to the surface of the brake ring 17, so that the brake ring 17 cannot rotate, the other cross rod 29 pushes the third cylinder 27 to move, the third cylinder 27 drives the arc-shaped rod 26 to rotate, the arc-shaped rod 26 rotates to push the second ring 24 to move, the second ring 24 drives the first cylinder 9 to move, the first cylinder 9 indirectly drives the second thread 12 to move for resetting, as shown in fig. 1, at this time, the second compression spring 23 has a tendency of pushing the internal thread cylinder 13 to move downwards, so that the external thread pipe 14 can have a tendency of rotating, due to the arrangement of the second one-way bearing 16, the external thread pipe 14 at this time cannot drive the second one-way bearing 16 to rotate internally, so that resetting of the second thread 12 is realized, the second thread 12 is prevented from moving again, and reuse is facilitated, the arrangement of the first one-way bearing 15 and the second one-way bearing 16 ensures one-way rotation of parts of the device, the arrangement of the first compression spring 8, the return spring 19 and the second compression spring 23 plays an effective resetting role, so as to ensure normal operation of the device, and the arrangement of the plurality of guide rods 10 plays a role of guiding the movement of the first cylinder 9, so as to ensure normal operation of the device.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. The utility model provides a but quick assembly disassembly's bolt and nut subassembly, includes spiral shell head (1) and nut (3), spiral shell head (1) is cavity, spiral shell head (1) bottom fixedly connected with screw rod (2), screw rod (2) top is hollow structure, a plurality of first screw threads (4) of nut (3) inner wall annular fixedly connected with from bottom to top, first screw thread (4) arc length is 1/8 circle, first screw thread (4) one end cross-section is the arc, fixedly connected with fixture block (5) between two adjacent first screw threads (4) of vertical direction, fixture block (5) set up in one side on first screw thread (4) surface, its characterized in that: screw rod (2) inner wall symmetry is opened there are two pairs of spout (2-1), spout (2-1) cross-section is the dovetail form, laminating slip is equipped with assorted slider (6) with it in spout (2-1), laminating rotation is equipped with two first ring (7) from bottom to top in screw rod (2), first ring (7) set up to every between slider (6), slider (6) and first ring (7) fixed connection, spout (2-1) shape is the arc, laminating is equipped with first compression spring (8) in spout (2-1), is equipped with first barrel (9) between two first ring (7), first barrel (9) do not contact with first ring (7), bottom first ring (7) top surface annular fixed connection has a plurality of guide bars (10), guide bar (10) cross-section is square, guide bar (10) top is passed first barrel (9) and top and is worn out with first ring (7) fixed connection pole (10) in first barrel (9) and first ring (7), and first barrel (11) outer wall connection of connecting rod (11) are connected first through groove (11) and first barrel (11) are passed from bottom to top first barrel (2-1), first barrel (11) are connected first through groove (11), first barrel (9) and first barrel (11) are connected to first barrel (11) outer wall (11) are connected Fixed connection, screw rod (2) outer wall annular from bottom to top the laminating be equipped with a plurality of second screw thread (12), first logical groove (2-2) are worn out to the connecting rod (11) other end and are stretched to the outside and with second screw thread (12) inner arc face fixed connection, second screw thread (12) cross-section is the arc, second screw thread (12) and first screw thread (4) phase-match, second screw thread (12) one end cross-section is the arc, fixed connection has interior screw thread section (13) in first barrel (9), be equipped with in interior screw thread section (13) with it assorted external screw thread pipe (14), first ring (7) are passed on external screw thread pipe (14) top and are worn out screw rod (2) and penetrate in spiral shell head (1), first ring (7) of bottom are passed to external screw thread pipe (14) bottom, external screw thread pipe (14) and first ring (7) contactless, fixed cover has two first one-way first one-way bearings (15) on screw thread pipe (14), first ring (15) top is fixed at first external screw thread pipe (15) fixed in one-way bearing (16) top surface (16) opposite direction, second screw thread (16) fixed bearing (15) on one-way, the fixed cover has brake ring (17) on one-way bearing of second (16), dovetail (1-1) has been opened respectively to bottom surface and interior top surface in spiral shell head (1), the laminating slides in dovetail (1-1) and is equipped with dovetail (18), be equipped with reset spring (19) in dovetail (1-1), reset spring (19) are compression spring, fixedly connected with arc (20) between two dovetail (18), arc (20) intrados is fixed to be embedded in has brake block (21), brake block (21) intrados and brake ring (17) surface laminating, arc (20) bottom surface only one side is the inclined plane, the cover has second barrel (22) on external screw thread pipe (14), second barrel (22) sets up in spiral shell head (1), the laminating of second barrel (22) extrados and spiral shell head (1) inner wall, second barrel (22) top surface is the inclined plane, second barrel (22) top surface diameter reduces gradually from bottom to top, second barrel (22) and second barrel (23) top surface laminating are in external screw thread pipe (23) compression spring bottom surface compression spring (13), second barrel (23) compression spring bottom surface compression spring (23) is on second barrel (13), the top end of the second compression spring (23) is attached to the bottom surface of the first circular ring (7) at the top end, the inner wall of the first cylinder (9) is fixedly connected with a second circular ring (24), a plurality of U-shaped rods (25) are arranged under the second circular ring (24), the U-shaped rods (25) are fixedly connected with the outer threaded pipe (14), the U-shaped rods (25) are rotatably connected with arc-shaped rods (26), one end of each arc-shaped rod (26) is attached to the bottom surface of the second circular ring (24), the other end of each arc-shaped rod (26) penetrates through the second circular ring (24), the outer threaded pipe (14) is sleeved with a third cylinder (27), and the inner diameter of the third cylinder (27) is gradually reduced from bottom to top, third barrel (27) inner wall and arc pole (26) surface laminating, be equipped with montant (28) in external screw thread pipe (14), external screw thread pipe (14) outer wall symmetry is opened there are two pairs of second through-slots (14-1), the laminating slides and is equipped with two horizontal poles (29) in external screw thread pipe (14), and second through-slot (14-1) and with third barrel (27) inner wall fixed connection are all worn out at horizontal pole (29) both ends of bottom, and second through-slot (14-1) and with second barrel (22) inner wall fixed connection are all worn out at horizontal pole (29) both ends on top, montant (28) top is passed two horizontal poles (29) and is passed external screw thread pipe (14) and spiral shell head in proper order (14) and spiral shell head (26) 1) stretches to the outside, montant (28) top and spiral shell head (1) top surface are in the coplanar, montant (28) cross-section is circular, montant (28) and horizontal pole (29) fixed connection, screw rod (2) are worn out to montant (28) bottom and are stretched to the outside, montant (28) respectively with spiral shell head (1), screw rod (2) swivelling joint, arc (20) intrados is the frosting, reset spring (19) elasticity dynamics is greater than second compression spring (23) elasticity dynamics far away, second screw thread (12) are equal with first screw thread (4) arc length.

2. The quick disconnect bolt-and-nut assembly of claim 1, wherein: the wall thickness of the first cylinder (9) is 3mm-5mm.

3. The quick disconnect bolt-and-nut assembly of claim 1, wherein: the arc length of the second thread (12) is 1/8 of a circle.

4. The quick disconnect bolt-and-nut assembly of claim 1, wherein: the arc-shaped rods (26) are sickle-shaped.

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