Bolt and nut fastener with loosening alarm function

Abstract

The bolt and nut fastener comprises a bolt, the outer surface of the bolt is connected with an anti-loosening sleeve through threads, a nut is movably installed above the anti-loosening sleeve, a clamping sleeve is fixedly installed on the surface of the bottom end of the nut, six upper pressing rods are evenly distributed at the top end of the nut, and the upper pressing rods are connected with the anti-loosening sleeve through threads. Six pressing rods are evenly distributed at the bottom end of the clamping sleeve, and an alarm is arranged in the nut. Through cooperation of the anti-loose sleeve and the clamping groove, when the device is used for installing the nut, the anti-loose sleeve can be installed on the surface of the bolt firstly, then the nut is installed, the clamping sleeve at the bottom end of the nut is inserted into the clamping groove, and then the nut is fastened by the anti-loose sleeve, so that the fastening performance of the nut and the bolt can be improved, and the situation that the nut is loosened is reduced; and through cooperation of a laser receiving block and a laser emitting ring, bolt looseness is detected, and a worker is warned through an alarm.

Description

Technical Field

[0001] The utility model relates to the technical field of nut fasteners, in particular to a bolt and nut fastener with loosening alarm. Background Technique

[0002] Bolt and nut fasteners are used in all walks of life and are the most widely used connecting fasteners in machinery. In many applications, it is required that bolts and nuts have anti-loosening measures to prevent nuts from loosening and causing safety accidents.

[0003] When the existing bolt and nut fasteners are in use, when the bolts and nuts become loose, it is difficult for the staff to detect, which is likely to cause safety accidents. Therefore, it does not meet the existing requirements, and for this reason, we propose a bolt and nut fastener with loosening alarm. Content of the Utility Model

[0004] The purpose of the utility model is to provide a bolt and nut fastener with loosening alarm to solve the problems in the above background technique that when the bolt and nut fasteners are in use, when the bolts and nuts become loose, it is difficult for the staff to detect, which is likely to cause safety accidents.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a bolt and nut fastener with loosening alarm, including a bolt, an anti-loosening sleeve is connected to the outer surface of the bolt by threads, a nut is movably installed above the anti-loosening sleeve, a clamping sleeve is fixedly installed on the bottom surface of the nut, six upper pressing rods are evenly distributed on the top of the nut, six lower pressing rods are evenly distributed on the bottom of the clamping sleeve, and an alarm is arranged inside the nut.

[0006] Preferably, six lifting grooves are arranged inside the nut, laser receiving blocks are slidably installed inside the lifting grooves, the bottom ends of the upper pressing rods are fixedly connected to the top ends of the laser receiving blocks, and the top ends of the lower pressing rods are fixedly connected to the bottom ends of the laser receiving blocks.

[0007] Preferably, a laser emitting ring is arranged at the center inside the lifting groove, a laser emitter is arranged on the inner surface of the inner ring of the laser emitting ring, a laser receiver is arranged on the outer surface of the laser receiving block, compression springs are movably installed between the top and bottom ends of the laser receiving block and the inside of the lifting groove, and the laser receiving blocks are electrically connected to the alarm.

[0008] Preferably, a clamping groove is arranged on the top surface of the anti-loosening sleeve, and the clamping sleeve is movably inserted into the inside of the clamping groove.

[0009] Preferably, thread grooves are arranged on the inner side surfaces of the anti-loosening sleeve, the nut and the clamping sleeve, and the anti-loosening sleeve, the nut and the clamping sleeve are all connected to the bolt by threads through the thread grooves.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. Through the cooperation of the laser receiving block and the laser emitting ring, when the device is in use, when the nut is installed on the outer surface of the bolt for fastening, the outer end of the upper pressure rod or the lower pressure rod will fit against the surface of the object connected to the bolt and be subjected to an inward pressing force applied by the object, causing the upper pressure rod or the lower pressure rod to move inward into the lifting groove. At this time, the laser receiving block will be pushed by the upper pressure rod or the lower pressure rod and slide upward or downward inside the lifting groove. When the laser receiving block moves out of the middle of the laser emitting ring, the laser receiving block no longer receives the laser emitted by the laser emitting ring, indicating that the nut is fastened to the object. At this time, the alarm does not work. When the bolt becomes loose, the nut will also become loose on the surface of the bolt. At this time, a gap is generated between the nut and the object, resulting in a decrease in the squeezing force exerted by the object on the upper pressure rod and the lower pressure rod, causing the laser receiving block to move towards the laser emitting ring, and then the laser receiving block receives the laser emitted by the laser emitting ring, thereby activating the alarm inside the nut to give an alarm, reminding the staff to further fasten the bolt and the nut.

[0012] 2. Through the cooperation of the anti-loosening sleeve and the clamping groove, when installing the nut on the device, the anti-loosening sleeve can be first installed on the surface of the bolt, and then the nut is installed, so that the clamping sleeve at the bottom of the nut is inserted into the clamping groove, and thus the nut is fastened by the anti-loosening sleeve, which can improve the fastening between the nut and the bolt and reduce the situation of nut loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0014] Figure 2 is a front sectional view of the whole of the present utility model;

[0015] Figure 3 is a top sectional view of the whole of the present utility model;

[0016] Figure 4 is of the present utility model Figure 2 is a partial structural schematic diagram of part A in the present utility model.

[0017] In the figure: 1. Bolt; 2. Anti-loosening sleeve; 3. Clamping groove; 4. Thread groove; 5. Nut; 6. Clamping sleeve; 7. Upper pressure rod; 8. Lower pressure rod; 9. Lifting groove; 10. Laser receiving block; 11. Laser emitting ring; 12. Compression spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0019] Please refer to Figures 1 to 4 For an embodiment provided by the present utility model: A bolt and nut fastener with loosening alarm, including bolt 1, an anti-loosening sleeve 2 is threadedly connected to the outer surface of bolt 1, a nut 5 is movably installed above the anti-loosening sleeve 2, a clamping sleeve 6 is fixedly installed on the bottom end surface of nut 5, six upper pressing rods 7 are evenly distributed on the top end of nut 5, six lower pressing rods 8 are evenly distributed on the bottom end of clamping sleeve 6, and an alarm is provided inside nut 5.

[0020] Through the cooperation of the anti-loosening sleeve 2 and the clamping groove 3, when installing the nut 5 on the device, the anti-loosening sleeve 2 can be first installed on the surface of bolt 1, and then the nut 5 is installed, so that the clamping sleeve 6 at the bottom end of nut 5 is inserted into the inside of the clamping groove 3, thereby enabling the nut 5 to be fastened by the anti-loosening sleeve 2, thus improving the fastening between the nut 5 and the bolt 1 and reducing the loosening of the nut 5.

[0021] Six lifting grooves 9 are provided inside the nut 5, a laser receiving block 10 is slidably installed inside each of the lifting grooves 9, the bottom ends of the upper pressing rods 7 are fixedly connected to the top ends of the laser receiving blocks 10, and the top ends of the lower pressing rods 8 are fixedly connected to the bottom ends of the laser receiving blocks 10.

[0022] A laser emitting ring 11 is provided at the center inside the lifting groove 9, a laser emitter is provided on the inner ring surface of the laser emitting ring 11, a laser receiver is provided on the outer surface of the laser receiving block 10, compression springs 12 are movably installed between the top and bottom ends of the laser receiving block 10 and the inside of the lifting groove 9, and the laser receiving blocks 10 are electrically connected to the alarm.

[0023] Through the cooperation of the laser receiving block 10 and the laser emitting ring 11, when the device is in use, when the nut 5 is installed on the outer surface of the bolt 1 for fastening, the outer ends of the upper pressing rod 7 or the lower pressing rod 8 will be in contact with the surface of the object connected to the bolt 1 and be subjected to an inward pressing force applied by the object, causing the upper pressing rod 7 or the lower pressing rod 8 to move inward into the lifting groove 9. At this time, the laser receiving block 10 will be pushed by the upper pressing rod 7 or the lower pressing rod 8 and slide upward or downward inside the lifting groove 9. When the laser receiving block 10 moves out of the middle of the laser emitting ring 11, at this time the laser receiving block 10 no longer receives the laser emitted by the laser emitting ring 11, indicating that the nut 5 is fastened to the object, and at this time the alarm does not work. When the bolt 1 loosens, the nut 5 will also loosen on the surface of the bolt 1. At this time, a gap is generated between the nut 5 and the object, resulting in a decrease in the squeezing force applied by the object to the upper pressing rod 7 and the lower pressing rod 8, causing the laser receiving block 10 to move towards the laser emitting ring 11, and then enabling the laser receiving block 10 to receive the laser emitted by the laser emitting ring 11, thereby activating the alarm inside the nut 5 to give an alarm, reminding the staff to further fasten the bolt 1 and the nut 5.

[0024] The top surface of the anti-loosening sleeve 2 is provided with a clamping groove 3, and the clamping sleeve 6 is movably inserted into the inside of the clamping groove 3.

[0025] Thread grooves 4 are provided on the inner surfaces of the anti-loosening sleeve 2, the nut 5 and the clamping sleeve 6, and the anti-loosening sleeve 2, the nut 5 and the clamping sleeve 6 are all threadedly connected to the bolt 1 through the thread grooves 4.

[0026] When the bolt-nut fastener with loosening alarm is in use, first install the bolt 1 on the surface of the object to be fastened. When the reserved length of the bolt 1 is sufficient, the anti-loosening sleeve 2 can be installed on the surface of the bolt 1 first, and then the nut 5 is installed, so that the clamping sleeve 6 at the bottom end of the nut 5 is inserted into the inside of the clamping groove 3, so that the nut 5 is fastened by the anti-loosening sleeve 2, thereby improving the fastening between the nut 5 and the bolt 1 and reducing the loosening of the nut 5;

[0027] When the reserved length of the bolt 1 is insufficient, the nut 5 can be directly installed to reinforce the bolt 1;

[0028] When the nut 5 is installed on the outer surface of the bolt 1 for fastening, the outer end of the upper pressure rod 7 or the lower pressure rod 8 will fit against the surface of the object connected to the bolt 1 and be subjected to an inward pressing force applied by the object, causing the upper pressure rod 7 or the lower pressure rod 8 to move into the inside of the lifting groove 9. At this time, the laser receiving block 10 will be pushed by the upper pressure rod 7 or the lower pressure rod 8 to slide up or down inside the lifting groove 9. When the laser receiving block 10 moves out of the middle of the laser emitting ring 11, at this time the laser receiving block 10 no longer receives the laser emitted by the laser emitting ring 11, indicating that the nut 5 is fastened to the object, and at this time the alarm does not work. When the bolt 1 loosens, the nut 5 will also loosen on the surface of the bolt 1. At this time, a gap is generated between the nut 5 and the object, which causes the extrusion force on the upper pressure rod 7 and the lower pressure rod 8 by the object to become smaller, causing the laser receiving block 10 to move towards the laser emitting ring 11, so that the laser receiving block 10 receives the laser emitted by the laser emitting ring 11, thereby activating the alarm inside the nut 5 to give an alarm, reminding the staff to further fasten the bolt 1 and the nut 5.

[0029] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A bolt and nut fastener with a loosening alarm, comprising a bolt (1), characterized in that: The outer surface of the bolt (1) is connected to an anti-loosening sleeve (2) through a thread, a nut (5) is movably installed on the top of the anti-loosening sleeve (2), a clamping sleeve (6) is fixedly installed on the bottom surface of the nut (5), six upper pressure rods (7) are evenly distributed on the top of the nut (5), six lower pressure rods (8) are evenly distributed on the bottom of the clamping sleeve (6), and an alarm is provided inside the nut (5).

2. A bolt and nut fastener with loosening alarm according to claim 1, characterized in that: The nut (5) is provided with six lifting grooves (9) inside, and a laser receiving block (10) is slidably installed inside each of the lifting grooves (9). The bottom end of the upper pressure rod (7) is fixedly connected to the top end of the laser receiving block (10), and the top end of the lower pressure rod (8) is fixedly connected to the bottom end of the laser receiving block (10).

3. A bolt and nut fastener with loosening alarm according to claim 2, characterized in that: A laser emitting ring (11) is provided at the center of the lifting groove (9), a laser emitter is provided on the inner ring surface of the laser emitting ring (11), a laser receiver is provided on the outer surface of the laser receiving block (10), compression springs (12) are movably installed between the top and bottom ends of the laser receiving block (10) and the inside of the lifting groove (9), and the laser receiving block (10) is electrically connected to the alarm.

4. The bolt and nut fastener with loosening alarm according to claim 1, characterized in that: The top surface of the anti-loosening sleeve (2) is provided with a clamping groove (3), and the clamping sleeve (6) is movably inserted into the inside of the clamping groove (3).

5. The bolt and nut fastener with loosening alarm according to claim 1, characterized in that: The inner surfaces of the anti-loosening sleeve (2), the nut (5) and the clamping sleeve (6) are all provided with thread grooves (4), and the anti-loosening sleeve (2), the nut (5) and the clamping sleeve (6) are all threadedly connected to the bolt (1) via the thread grooves (4).

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