High-reliability anti-theft bolt connecting pair

Abstract

The utility model discloses a high-reliability anti-theft bolt connecting pair which comprises a screw rod and a nut, the bottom of the screw rod is sleeved with the nut in a threaded mode, a limiting groove is formed in the middle of the bottom end of the screw rod, a groove is formed in the inner side of the limiting groove in a surrounding mode, and an anti-loosening mechanism used for preventing the screw rod from loosening is arranged at the bottom of the nut. The anti-loosening mechanism comprises a round shell, a limiting column matched with the limiting groove is arranged on the side, close to the nut, of the round shell, and the outer wall of the limiting column is movably connected with a limiting block matched with the groove. And after installation is completed, the rotating handle is rotated to drive the limiting column to move and be inserted into the limiting groove, then the rotating ring is rotated to drive the multiple limiting blocks to synchronously move back to back into the groove, then the nut is prevented from rotating through the round shell, and loosening is better prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of antitheft bolt connection pair, specifically, relate to a high reliable antitheft bolt connection pair. BACKGROUND

[0002] Current steel structure is widely used in building, bridge and other engineering and wind power tower, power transmission tower and other large facilities, the key of steel structure high -efficient construction lies in the connection technology, and its assembly mainly adopts two ways of welding and bolt connection, because the welding of steel structure is high to the technical requirement of worker, and the labor intensity is big, the assembly efficiency is low, and the quality guarantee is difficult, therefore, bolt connection through the high reliable antitheft bolt connection pair structure becomes the main development direction of steel structure field assembly technology.

[0003] Such as existing patent CN202121936924.4 discloses a high -strength bolt connection pair structure, through the inside setting of split gasket limit slot, the limit slot and rectangular gasket are matched with each other, the volume of limit slot is greater than rectangular gasket, the number of limit slot is consistent with rectangular gasket, the design can prevent the rotation of washer under the state of bolt load, and the stability of washer is increased.

[0004] But the high -strength bolt connection pair structure of the above type still has certain insufficient when using, high -strength bolt connection pair structure can only reduce the loosening of bolt to a certain extent after installation, when the vibration occurs for a long time in working environment, there is the possibility of loosening even falling off, and it is not convenient to better prevent loosening.

[0005] For the problems in the related art, no effective solution has been proposed so far. UTILITY MODEL CONTENTS

[0006] In view of the problems in the related art, the utility model provides a high reliable antitheft bolt connection pair to overcome the above technical problems existing in the prior art.

[0007] Therefore, the utility model adopts the specific technical scheme as follows:

[0008] A high reliable antitheft bolt connection pair, comprising a screw rod and a nut, the bottom of the screw rod is sleeved with the nut, and a limit slot is formed in the middle of the bottom end of the screw rod, a recess is arranged around the inner side of the limit slot, and an anti-loosening mechanism is arranged at the bottom of the nut to prevent the screw rod from loosening.

[0009] The anti-loosening mechanism comprises a circular shell, a limit post matched with the limit slot is arranged on the side of the circular shell close to the nut, and a limit block matched with the recess is movably connected to the outer wall of the limit post.

[0010] As preferred, the limiting post is movably connected with a hollow screw rod penetrating through the circular shell on the side away from the nut, and both sides of the circular shell are provided with supporting rods connected with the nut.

[0011] As preferred, a stroke hole is formed in the outer surface of the limiting post for the movement of the limiting block, a guide rod penetrating through the limiting block is arranged in the stroke hole, and a reset spring for pressing the limiting block to reset is arranged on the guide rod.

[0012] As preferred, a through hole is formed in the middle part of the limiting post, and a tapered movable post is arranged in the through hole and abuts against the outer wall of the limiting block.

[0013] As preferred, a threaded rod penetrating through the hollow screw rod is movably connected with the bottom end of the tapered movable post, and a threaded hole matched with the threaded rod is formed in the limiting post.

[0014] As preferred, a swivel ring is arranged at the bottom end of the threaded rod, and a handle is arranged on one side of the hollow screw rod.

[0015] As preferred, a gasket is arranged on the top of the nut.

[0016] The beneficial effects of the utility model are as follows: after installation, the limiting post is moved and inserted into the limiting groove by rotating the handle, then the limiting blocks are synchronously moved back into the grooves by rotating the swivel ring, and then the nut is prevented from rotating by the circular shell, so that loosening is better prevented. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0018] Fig. 1 is a structural schematic view of a high-reliability anti-theft bolt connection pair according to an embodiment of the present utility model;

[0019] Fig. 2 is a structural schematic view of an anti-loosening mechanism in a high-reliability anti-theft bolt connection pair according to an embodiment of the present utility model;

[0020] Fig. 3 is a structural schematic view of a tapered movable post in a high-reliability anti-theft bolt connection pair according to an embodiment of the present utility model.

[0021] In the drawings:

[0022] 1, screw; 2, nut; 3, limiting groove; 4, groove; 5, round shell; 6, limiting column; 7, limiting block; 8, hollow screw rod; 9, support rod; 10, stroke hole; 11, guide rod; 12, through hole; 13, conical movable column; 14, threaded rod; 15, rotating ring; 16, handle; 17, gasket. DETAILED DESCRIPTION

[0023] To further illustrate the embodiments, the utility model provides the drawings, these drawings are part of the utility model disclosure, it mainly used to illustrate the embodiment, and can cooperate with the related description of the specification to explain the operating principle of the embodiment, cooperate with reference to these contents, the person skilled in the art should be able to understand other possible implementation ways and the advantages of the utility model, the components in the drawing are not drawn according to scale, and similar component symbols are usually used to represent similar components.

[0024] According to the embodiment of the utility model, a high-reliability anti-theft bolt connection pair is provided.

[0025] Embodiment one:

[0026] As shown in Figs. 1-3 , according to the high-reliability anti-theft bolt connection pair of the utility model embodiment, including screw 1 and nut 2, the bottom of the screw 1 is threadedly sleeved with the nut 2, and the middle of the bottom end of the screw 1 is provided with a limiting groove 3, the inner side of the limiting groove 3 is provided with a groove 4, and the bottom of the nut 2 is provided with an anti-loosening mechanism for preventing the screw 1 from loosening.

[0027] The anti-loosening mechanism includes a round shell 5, one side of the round shell 5 close to the nut 2 is provided with a limiting column 6 matched with the limiting groove 3, and the outer wall of the limiting column 6 is movably connected with a limiting block 7 matched with the groove 4.

[0028] Embodiment two:

[0029] As shown in Figs. 1-3 , the side of the limiting column 6 away from the nut 2 is movably connected with a hollow screw rod 8 penetrating through the round shell 5, the two sides of the round shell 5 are provided with support rods 9 connected with the nut 2, the outer surface of the limiting column 6 is provided with a stroke hole 10 for the movement of the limiting block 7, the stroke hole 10 is provided with a guide rod 11 penetrating through the limiting block 7, the guide rod 11 is provided with a reset spring for extruding the limiting block 7 to reset, the middle part of the limiting column 6 is provided with a through hole 12, and the through hole 12 is provided with a conical movable column 13 abutting against the outer wall of the limiting block 7.

[0030] Embodiment three:

[0031] As shown in Figs. 1-3As shown, the bottom end of the conical movable column 13 is movably connected with a threaded rod 14 penetrating the hollow screw rod 8, a threaded hole matched with the threaded rod 14 is formed on the limiting column 6, the bottom end of the threaded rod 14 is provided with a swivel ring 15, one side of the hollow screw rod 8 is provided with a handle 16, and the top of the nut 2 is provided with a gasket 17.

[0032] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process will be described in detail.

[0033] In actual application, first, the anti-theft bolt connecting auxiliary structure is placed in the corresponding working position, then whether each part of the high-strength bolt connecting auxiliary structure is normal is checked, after the checking is completed, the anti-theft bolt connecting auxiliary structure can be used, when using, the nut 2 is rotated and disassembled, the screw rod 1 is inserted into the connecting holes of the two connecting pieces, then the nut 2 is rotated and installed at the bottom of the screw rod 1, after the installation is completed, the handle 16 is rotated to drive the hollow screw rod 8 to rotate, the hollow screw rod 8 drives the circular shell 5 and the limiting column 6 at the top of the circular shell 5 to move upwards, and the threaded rod 14 also moves upwards in the hollow screw rod 8 along with the upward movement of the limiting column 6, until the limiting column 6 moves into the limiting groove 3, then the swivel ring 15 is rotated to drive the threaded rod 14 to rotate, the threaded rod 14 drives the conical movable column 13 to move upwards, in the upward movement process of the conical movable column 13, the diameter of the conical movable column 13 changes to press the limiting block 7, so that the limiting block 7 moves along the guide rod 11 and presses the return spring to move backward, moves outward from the stroke hole 10 and moves into the recess 4, and then the circular shell 5 prevents the nut 2 from rotating, so that the loosening is better prevented.

[0034] In summary, according to the above technical scheme of the utility model, after the installation is completed, the limiting column 6 is moved and inserted into the limiting groove 3 by rotating the handle 16, then the swivel ring 15 is rotated to drive the plurality of limiting blocks 7 to move backward synchronously into the recess 4, and then the circular shell 5 prevents the nut 2 from rotating, so that the loosening is better prevented.

[0035] The above only describes preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A highly reliable anti-theft bolt connection pair, characterized in that, The utility model provides a screw rod (1) and nut (2) including, the bottom threaded sleeve of screw rod (1) is equipped with nut (2), and the bottom end middle part of screw rod (1) is equipped with limiting slot (3), the inner side of limiting slot (3) is equipped with recess (4) around, and the bottom of nut (2) is equipped with anti-loosening mechanism for preventing screw rod (1) loosening; The anti-loosening mechanism includes a circular shell (5) having a limiting post (6) on one side thereof that matches the limiting slot (3), the limiting post (6) has a limiting block (7) movably connected to the outer wall thereof that matches the recess (4), the limiting post (6) has a hollow screw rod (8) movably connected to the side thereof away from the nut (2) that penetrates the circular shell (5), the circular shell (5) has a support rod (9) connected to the nut (2) on both sides thereof, the limiting post (6) has a stroke hole (10) on the outer surface thereof for the movement of the limiting block (7), the stroke hole (10) has a guide rod (11) penetrating the limiting block (7) disposed therein, the guide rod (11) has a return spring disposed thereon for pressing the limiting block (7) to return, the limiting post (6) has a through hole (12) in the middle thereof, and the through hole (12) has a tapered movable post (13) in contact with the outer wall of the limiting block (7).

2. The high-reliability theft-proof bolted connection pair according to claim 1, characterized in that, The tapered movable post (13) has a threaded rod (14) movably connected to the bottom end thereof that penetrates the hollow screw rod (8), and the limiting post (6) has a threaded hole matching the threaded rod (14) disposed therein.

3. A high-reliability theft-proof bolted joint pair according to claim 2, wherein The threaded rod (14) has a swivel ring (15) disposed at the bottom end thereof, and the hollow screw rod (8) has a handle (16) disposed on one side thereof.

4. The high-reliability theft-preventing bolted joint pair according to claim 1, wherein The nut (2) has a gasket (17) disposed on the top thereof.

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