Nut anti-falling device

Abstract

The utility model relates to the technical field of connecting pieces, in particular to a nut anti-falling device which comprises a fixing box, a cover plate, a limiting plate and a clamping mechanism, the cover plate is arranged on the front face of the fixing box, the limiting plate is fixedly connected to the back face of the inner wall of the fixing box, a nut body is arranged in the fixing box, and the clamping mechanism is arranged on the nut body. The nut body is in threaded connection with a bolt body, and the clamping mechanism is arranged on the fixing box. The clamping mechanism comprises a clamping block, a first telescopic rod, a second telescopic rod, limiting sleeves and springs. The limiting sleeves are fixedly connected to the left side and the right side of the inner wall of the fixing box. The two clamping blocks are used for clamping and fixing the placed nut body under the action of the spring, then the cover plate is closed, the bolt body is screwed, at the moment, the nut body cannot rotate along with the bolt body, the nut body is fixed in the fixing box, the nut body is easier to hold, and the phenomena of slipping and falling are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting piece technical field, concretely is a nut anti -drop device. BACKGROUND

[0002] The nut is the nut, and is screwed together with the bolt or the screw rod to be used to the part of fastening, and the nut is connected with the bolt of same specification through the thread of inside, and realizes the operation of connecting fastener;

[0003] When the nut is used, first, the suitable bolt is adapted, then the bolt is inserted into the nut and rotated, so that the external thread of the bolt contacts with the internal thread of the nut, and then the operation of fixing the required fixed article or workpiece is realized, because the bolt and the nut are used in cooperation, the bolt is rotated into the nut, the bolt and the nut cooperate with each other, the nut will rotate together with the bolt, and the nut is not easy to be held, the nut is easy to slip and fall, which is not conducive to the use of the nut.

[0004] In conclusion, the utility model provides a nut anti -drop device to solve the above -mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a nut anti -drop device to solve the problems in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A nut anti -drop device, including: fixed box, cover plate, limit board and clamping mechanism, the cover plate is arranged at the front of fixed box, the limit board is fixedly connected at the back of the inner wall of fixed box, the inside of fixed box is provided with nut body, and the nut body is threadedly connected with bolt body, the clamping mechanism is arranged on the fixed box, the clamping mechanism includes clamping block, telescopic rod one, telescopic rod two, limit sleeve and spring, the limit sleeve is fixedly connected at the left and right sides of the inner wall of fixed box, the spring is arranged in the inside of limit sleeve, and the clamping block is fixedly connected at one end of telescopic rod one and telescopic rod two.

[0008] Preferably, the one end of telescopic rod one and telescopic rod two away from clamping block is slidably connected in the inside of limit sleeve, and the limit sleeve can make telescopic rod one and telescopic rod two keep horizontal movement.

[0009] Preferably, the right side of fixed box is slidably connected with movable rod, and the movable rod penetrates the right side of fixed box, the top of telescopic rod two is fixedly connected with one end of connecting rod, and the other end of connecting rod is fixedly connected with the bottom of movable rod, and the movable rod is arranged to move telescopic rod two through connecting rod.

[0010] Preferably, one end of the pull rope is fixedly connected to the top of the telescopic rod one, and the other end of the pull rope is fixedly connected to the outer wall of the connecting rod.

[0011] Preferably, the inner wall back of the fixed box is fixedly connected with a round roller, and the pull rope is movably connected with the round roller by penetrating the round roller, so that the direction of the pulling force of the pull rope is changed, and the front of the round roller is connected with a round piece to prevent the pull rope from being separated.

[0012] Preferably, the fixed box and the movable rod are provided with a limiting mechanism, the limiting mechanism comprises a round block, an L-shaped through hole, a rotating piece and a baffle one, the right end of the movable rod is provided with a circular groove, a rotating rod is movably connected in the circular groove through a bearing, the rotating piece is fixedly connected to the outer wall of the rotating rod, the L-shaped through hole is formed in the outer wall of the movable rod, and the rotating piece is movably connected with the L-shaped through hole by penetrating the L-shaped through hole, and the baffle one is fixedly connected to the inner wall back of the fixed box.

[0013] Preferably, the inner wall back of the fixed box is fixedly connected with a baffle two which is arranged on the left side of the baffle one, so that the baffle two can cooperate with the rotating piece to limit the movable rod after being pressed.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. By opening the cover plate and then pressing the movable rod, the movable rod drives the telescopic rod two to move left through the connecting rod, the connecting rod moves left to pull the telescopic rod one through the pull rope, so that the two clamping blocks move away from each other, the nut body is placed between the two limiting plates, the pressed movable rod is loosened, the two clamping blocks clamp and fix the nut body under the action of the spring, then the cover plate is closed and the bolt body is screwed, at this time, the nut body will not rotate with the bolt body, and the nut body is fixed in the fixed box, so that it is easier to hold and avoid slipping and falling.

[0016] 2. By arranging the baffle one and the rotating piece, the movable rod can be prevented from moving left after clamping, the baffle one is separated from the baffle two by counterclockwise rotating the round block to drive the rotating piece to rotate counterclockwise through the rotating rod, so that the movable rod can be pressed, the rotating piece is rotated to the left side of the baffle two by clockwise rotating the round block after the movable rod is pressed to move a certain distance, so that the movable rod can be prevented from returning, and the nut body is convenient to take and place. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is fixed box internal structure schematic view of the utility model;

[0019] Figure 3 It is sectional view of the utility model;

[0020] Figure 4 It is fixed box internal structure schematic view of the utility model;

[0021] In the drawing: 1, fixed box;2, cover plate;3, limit plate;4, clamping mechanism;41, clamping block;42, telescopic rod one;43, telescopic rod two;44, limit sleeve;45, spring;46, connecting rod;47, movable rod;48, pull rope;49, round roller;5, limit mechanism;51, round block;52, L-shaped through hole;53, rotating piece;54, baffle one;55, baffle two. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0023] For example, as Figures 1-4As shown, a nut anti-falling device, including fixed box 1, cover plate 2, limiting plate 3 and clamping mechanism 4, cover plate 2 is arranged on the front of fixed box 1, cover plate 2 is connected with fixed box 1 through buckle, buckle is convenient to open and close, it is the common connection mode in prior art, not drawn in detail in the figure, limiting plate 3 is fixedly connected on the inner wall back of fixed box 1, the inside of fixed box 1 is provided with nut body, and the nut body is threadedly connected with bolt body, clamping mechanism 4 is arranged on fixed box 1;Clamping mechanism 4 includes clamping block 41, telescopic rod one 42, telescopic rod two 43, limiting sleeve 44 and spring 45, limiting sleeve 44 is fixedly connected on the inner wall left and right sides of fixed box 1, spring 45 is arranged in the inside of limiting sleeve 44, the both ends of spring 45 are fixedly connected with the end of telescopic rod one 42 or telescopic rod two 43 and the inner wall side of fixed box 1, clamping block 41 is fixedly connected on one end of telescopic rod one 42 and telescopic rod two 43, clamping block 41 adopts high-strength alloy steel material, after heat treatment process, the hardness reaches HRC45-50, to ensure sufficient strength and wear resistance, the side of clamping block 41 close to nut body is processed with V-shaped groove, V-shaped groove surface is embedded with rubber antiskid strip, rubber material has high friction coefficient (friction coefficient can reach 0.8-1.0), which can tightly fit the outer wall of nut and effectively prevent the nut surface from being scratched, improve the stability and reliability of clamping, the shape of telescopic rod one 42 and telescopic rod two 43 is consistent, and the fixed mode with clamping block 41 is welding, one end of telescopic rod one 42 and telescopic rod two 43 away from clamping block 41 is slidingly connected in the inside of limiting sleeve 44, limiting sleeve 44 can make telescopic rod one 42 and telescopic rod two 43 keep horizontal movement, the right side of fixed box 1 is slidingly connected with movable rod 47, and movable rod 47 penetrates through the right side of fixed box 1, one end of connecting rod 46 is fixedly connected with the top of telescopic rod two 43, and the other end of connecting rod 46 is fixedly connected with the bottom of movable rod 47, by setting movable rod 47, telescopic rod two 43 is driven to move through connecting rod 46, one end of pull rope 48 is fixedly connected with the top of telescopic rod one 42, and the other end of pull rope 48 is fixedly connected with the outer wall of connecting rod 46, by setting pull rope 48, when connecting rod 46 moves left, pull rope 48 pulls telescopic rod one 42 to retract into the corresponding limiting sleeve 44, the inner wall back of fixed box 1 is fixedly connected with round roller 49, pull rope 48 is movably connected with round roller 49 by penetrating through round roller 49, by setting round roller 49, the pulling direction of pull rope 48 is changed, the front of round roller 49 is connected with round piece to avoid pull rope 48 from separating, the surface of round roller 49 is smooth, which can reduce the friction between round roller 49 and pull rope 48.

[0024] Specifically, by opening the cover plate 2, pressing the movable rod 47 again, the movable rod 47 drives the telescopic rod two 43 to move left through the connecting rod 46, the connecting rod 46 pulls the telescopic rod one 42 through the pull rope 48 when moving left, so that the two clamping blocks 41 move away from each other, then place the nut body between the two limiting plates 3, loosen the pressed movable rod 47, and the two clamping blocks 41 clamp and fix the nut body under the action of the spring 45, then close the cover plate 2 and screw the bolt body, at this time the nut body will not rotate with the bolt body, and it is easier to hold the nut body inside the fixed box 1, avoiding the phenomenon of slipping and falling.

[0025] As shown in Figures 3-4 The fixed box 1 and the movable rod 47 are provided with a limiting mechanism 5, the limiting mechanism 5 includes a circular block 51, an L-shaped hole 52, a rotating piece 53 and a baffle one 54, the right end of the movable rod 47 is provided with a circular groove, the inside of the circular groove is rotatably connected with a rotating rod through a bearing, the rotating piece 53 is fixedly connected to the outer wall of the rotating rod, the L-shaped hole 52 is arranged on the outer wall of the movable rod 47, and the rotating piece 53 is rotatably connected with the L-shaped hole 52 through the L-shaped hole 52, the baffle one 54 is fixedly connected to the inner wall back of the fixed box 1, the L-shaped hole 52 can make the rotating piece 53 rotate within a certain range, so that it can be separated from the baffle one 54, the inner wall back of the fixed box 1 is fixedly connected with a baffle two 55, and the baffle two 55 is arranged on the left side of the baffle one 54, and the baffle two 55 can cooperate with the rotating piece 53 to limit the pressed movable rod 47.

[0026] Specifically, by setting the baffle one 54 and the rotating piece 53, the left movement of the movable rod 47 after clamping can be avoided, and the instability of clamping can be avoided, the circular block 51 is counterclockwise rotated to drive the rotating piece 53 to rotate counterclockwise through the rotating rod and separate from the baffle one 54, so that the movable rod 47 can be pressed, and after the movable rod 47 moves a certain distance, the circular block 51 is clockwise rotated to make the rotating piece 53 rotate to the left side of the baffle two 55, so that the movable rod 47 can be prevented from resetting, and the nut body is convenient to take and place.

[0027] The utility model discloses a working principle is as follows: through opening cover plate 2, press movable rod 47 again, make movable rod 47 drive telescopic rod two 43 left removal through connecting rod 46, connecting rod 46 left removal is through drawstring 48 and pulls telescopic rod one 42, to make two clamping blocks 41 away from each other, place the nut body between two limit plates 3 again, loosen the press movable rod 47, make two clamping blocks 41 under the action of spring 45 and clamp and fix the nut body, then close cover plate 2 and screw on bolt body, at this moment, the nut body will not follow bolt body and appear rotation together, and the nut body is fixed in the inside of fixed box 1 and is more easily held, avoid the phenomenon that slip and fall appears, through setting baffle one 54 and rotary piece 53, can avoid the left removal of movable rod 47 after clamping, and cause the instability of clamping, anticlockwise rotary round block 51 makes it through rotary rod and drive rotary piece 53 anticlockwise rotation and separate with baffle one 54, to press movable rod 47, press movable rod 47 and move a certain distance after, anticlockwise rotary round block 51 makes rotary piece 53 rotate to the left side of baffle two 55, to prevent movable rod 47 reset, and then the nut body is placed, rotary round block 51 makes rotary piece 53 separate with baffle two 55, and two clamping blocks 41 can automatically reset and clamp the nut body.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. The skilled person in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the utility model and are not intended to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A nut anti-drop device, characterized in that, Include: Fixed box (1), cover plate (2), limit plate (3) and clamping mechanism (4), the cover plate (2) is arranged in the front of fixed box (1), the limit plate (3) is fixedly connected to the inner wall back of fixed box (1), the inside of fixed box (1) is provided with nut body, and the nut body is threadedly connected with bolt body, the clamping mechanism (4) is arranged on fixed box (1); The clamping mechanism (4) includes clamping block (41), telescopic rod one (42), telescopic rod two (43), limit sleeve (44) and spring (45), the limit sleeve (44) is fixedly connected to the left and right sides of the inner wall of fixed box (1), the spring (45) is arranged in the inside of limit sleeve (44), the clamping block (41) is fixedly connected to one end of telescopic rod one (42) and telescopic rod two (43).

2. A nut fall-off prevention device according to claim 1, characterized in that: The one end of telescopic rod one (42) and telescopic rod two (43) away from clamping block (41) is slidably connected in the inside of limit sleeve (44).

3. A nut anti-drop device according to claim 2, characterized in that: The right side of fixed box (1) is slidably connected with movable rod (47), and the movable rod (47) penetrates the right side of fixed box (1), one end of connecting rod (46) is fixedly connected to the top of telescopic rod two (43), and the other end of connecting rod (46) is fixedly connected with the bottom of movable rod (47).

4. A nut anti-drop device according to claim 3, characterized in that: One end of pull rope (48) is fixedly connected to the top of telescopic rod one (42), and the other end of pull rope (48) is fixedly connected with the outer wall of connecting rod (46).

5. A nut anti-drop device according to claim 4, characterized in that: The back of the inner wall of fixed box (1) is fixedly connected with round roller (49), and pull rope (48) is movably connected with round roller (49) by penetrating round roller (49).

6. A nut fall-off prevention device according to claim 3, characterized in that: The fixed box (1) and movable rod (47) are provided with limit mechanism (5), the limit mechanism (5) includes round block (51), L-shaped hole (52), rotating piece (53) and baffle one (54), the right end of movable rod (47) is provided with circular groove, the inside of the circular groove is rotatably connected with rotating rod through bearing, the rotating piece (53) is fixedly connected to the outer wall of rotating rod, the L-shaped hole (52) is arranged in the outer wall of movable rod (47), and the rotating piece (53) is rotatably connected with the L-shaped hole (52) by penetrating the L-shaped hole (52), the baffle one (54) is fixedly connected to the inner wall back of fixed box (1).

7. A nut anti-drop device according to claim 6, characterized in that: The back of the inner wall of fixed box (1) is fixedly connected with baffle two (55), and the baffle two (55) is arranged on the left side of baffle one (54).

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