Screw assembly with sensing device

Abstract

The utility model relates to the technical field of screw assemblies, in particular to a screw assembly with a sensing device, which comprises a screw head and a screw rod fixed at the top of the screw head, a first nut is sleeved on the screw rod, a second nut is coaxially arranged above the first nut, a plurality of arc-shaped heads are mounted at the bottom of the second nut, and an annular space is formed among the plurality of arc-shaped heads. The screw penetrates through the space, the inner surface of the arc-shaped head is in threaded connection with the screw, a containing groove is formed in the top of the first nut, when the first nut and the second nut are screwed tightly, the arc-shaped head extends into the containing groove, the screw is further sleeved with a pressure sensor, and the wiring end of the pressure sensor is connected with a controller through a wire. And a supporting ring is mounted at the bottom of the pressure sensor. Through cooperation of the containing groove and the arc-shaped head, the second nut can be tightened, then the friction force between the second nut and the screw rod is increased, the second nut is prevented from loosening, and the connecting effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw assembly technical field especially relates to a screw assembly with induction device. BACKGROUND

[0002] Screw is usually composed of three parts: head, thread, shank, and some screws also include nut, in use, the screw rod on the screw is passed through the equipment to be connected, and then the nut is tightened to complete the connection.

[0003] The existing screw assembly with induction device generally sets the sensor between the nut and the equipment, and the sensor is pressed when the nut is tightened, so that the loosening of the nut can be sensed in real time. However, since the sensor is directly in contact with the nut, the nut rotates relative to the sensor when being tightened, and the nut also rotates the sensor relative to the equipment when the nut is tightened to a certain extent, thereby wearing the surface of the sensor, and the use effect is poor. In addition, the screw assembly with induction device generally does not have an anti-loosening mechanism, so that the nut is prone to loosening during use. Although the loosening of the nut can be detected in time, the staff still needs to manually tighten it again, and the connection effect is poor. Therefore, we propose a screw assembly with induction device. SUMMARY

[0004] The utility model aims at solving the above-mentioned shortcomings existing in the prior art, and proposes a screw assembly with induction device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a screw assembly with induction device is designed, which comprises a screw head and a screw rod fixed on the top of the screw head, a first nut is sleeved on the screw rod, a second nut is coaxially arranged above the first nut, a plurality of arc heads are installed at the bottom of the second nut, a ring-shaped space is formed between the plurality of arc heads, the screw rod penetrates through the space, and the inner surface of the arc head is in threaded connection with the screw rod;

[0006] A containing groove is formed in the top of the first nut, and the arc head extends into the containing groove when the first nut and the second nut are tightened;

[0007] A pressure sensor is also sleeved on the screw rod, the wiring end of the pressure sensor is connected with the controller through the lead wire, and a support ring is installed at the bottom of the pressure sensor, and the bottom of the support ring is in contact with the equipment;

[0008] Two connecting rings are also sleeved on the screw rod, the two connecting rings are connected through an elastic sheet, and the two connecting rings are located between the first nut and the pressure sensor, wherein the top of the lower connecting ring is provided with a plurality of positioning grooves, and the top of each positioning block of the pressure sensor is penetrated through the corresponding positioning groove.

[0009] Preferably, there is a gap between two adjacent arc heads, and the accommodating groove is conical.

[0010] Preferably, one side of the second nut is provided with an open groove, and the open groove is closed when the arc head extends into the accommodating groove.

[0011] Preferably, the top of the second nut is coaxially provided with a limiting ring, and a limiting groove is formed in the top of the second nut, the limiting groove is annularly arranged when the limiting ring on the second nut is open, and the bottom of the limiting ring extends into the limiting groove and is gap-fitted with the inner wall of the limiting groove.

[0012] Preferably, the top of the limiting ring is provided with a convex ring, and the edge of the convex ring extends to the outside of the second nut.

[0013] Preferably, the elastic sheet is made of elastic metal material.

[0014] Preferably, the screw rod is made of alloy steel material.

[0015] The design scheme of the utility model has the beneficial effects in the application process:

[0016] Through the cooperation of the accommodating groove and the arc head, the second nut can be tightened, thereby increasing the friction between the second nut and the screw rod, preventing the second nut from loosening, and improving the connection effect.

[0017] By installing a supporting ring at the bottom of the pressure sensor and connecting the connecting ring through the cooperation of the positioning block and the positioning groove at the top of the pressure sensor, the surface of the pressure sensor will not be abraded when the first nut is tightened, thereby improving the use effect. DETAILED DESCRIPTION

[0018] Figure 1 The utility model discloses a structure schematic view;

[0019] Figure 2 The utility model discloses a structure side view;

[0020] Figure 3 The utility model discloses a pressure sensor and connecting ring structure schematic view;

[0021] Figure 4 The utility model discloses a first nut and second nut connecting structure schematic view.

[0022] In the drawing: 1, screw head; 2, pressure sensor; 3, positioning block; 4, supporting ring; 5, connecting ring; 6, accommodating groove; 7, first nut; 8, limiting groove; 9, second nut; 10, convex ring; 11, screw rod; 12, elastic sheet; 13, arc head; 14, limiting ring; 15, positioning groove; 16, open groove. DETAILED DESCRIPTION

[0023] 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.

[0024] Referring to Figures 1-4 A screw assembly with an induction device comprises a screw head 1 and a screw rod 11 fixed on the top of the screw head 1, and a first nut 7 sleeved on the screw rod 11. In actual use, the screw rod 11 is inserted into the mounting hole of the equipment to be installed, and then the first nut 7 is tightened, so that the fixing is completed.

[0025] As shown in Figure 1 and Figure 4 , a second nut 9 is coaxially arranged above the first nut 7, a plurality of arc heads 13 are arranged on the bottom of the second nut 9, an annular space is formed between the plurality of arc heads 13, the screw rod 11 penetrates through the space, the inner surface of the arc head 13 is threadedly connected with the screw rod 11, and a receiving groove 6 is formed on the top of the first nut 7. When the first nut 7 and the second nut 9 are tightened, the arc head 13 extends into the receiving groove 6. In actual use, after the first nut 7 is tightened, the second nut 9 is tightened, so that the bottom of the second nut 9 is stacked on the top of the first nut 7, and at the same time, the arc head 13 is inserted into the receiving groove 6, thereby avoiding loosening of the first nut 7.

[0026] It should be noted that there is a spacing between the adjacent two arc heads 13, and the receiving groove 6 is conically arranged. When the arc head 13 extends into the receiving groove 6, the arc head 13 is extruded by the side wall of the receiving groove 6, thereby increasing the friction between the arc head 13 and the screw thread on the screw rod 11, and improving the anti-loosening effect.

[0027] It should be noted that an open slot 16 is formed on one side of the second nut 9. When the arc head 13 extends into the receiving groove 6, the open slot 16 is closed. When the arc head 13 is extruded by the side wall of the receiving groove 6, the second nut 9 is contracted, so that the second nut 9 tightly holds the screw rod 11, the friction between the second nut 9 and the screw rod 11 is increased, and the installation stability is improved.

[0028] As shown in Figure 4 , a limiting ring 14 is coaxially arranged on the top of the second nut 9, and a limiting groove 8 is formed on the top of the second nut 9. When the open slot 16 of the limiting ring 14 on the second nut 9 is closed, the limiting groove 8 is annularly arranged, the bottom of the limiting ring 14 extends into the limiting groove 8 and is in gap cooperation with the inner wall of the limiting groove 8. In actual use, after the limiting ring 14 is moved into the limiting groove 8, the second nut 9 is limited, so that the second nut 9 is prevented from being opened, and the installation stability is improved.

[0029] AsFigure 1 And Figure 2 As shown in

[0030] As shown in Figure 1 The support ring 4 is installed at the bottom of the pressure sensor 2, and the surface of the pressure sensor 2 is protected under the action of the support ring 4. When the first nut 7 is tightened, the pressure sensor 2 will rotate with the first nut 7, and the surface of the pressure sensor 2 can be prevented from being worn under the action of the support ring 4.

[0031] As shown in Figure 1 And Figure 3 Two connecting rings 5 are further sleeved on the screw rod 11, and the two connecting rings 5 are connected through an elastic sheet 12. The elastic sheet 12 is made of elastic metal material, and the two connecting rings 5 are located between the first nut 7 and the pressure sensor 2. In actual use, the first nut 7 will extrude the elastic sheet 12 when tightened, and the elastic force of the elastic sheet 12 can increase the friction between the first nut 7 and the screw rod 11, thereby preventing the first nut 7 from loosening.

[0032] As shown in Figure 3 As shown in

[0033] Specifically, in use, the worker passes the screw rod 11 through the mounting hole on the equipment to be connected, so that the screw head 1 abuts against the surface of one of the equipment, then the worker puts the pressure sensor 2 on the screw rod 11, so that the bottom supporting ring 4 of the pressure sensor 2 is in contact with the surface of the other equipment, then the worker puts the two connecting rings 5 on the screw rod 11, so that the positioning groove 15 on one of the connecting rings 5 is sleeved on the positioning block 3 on the top of the pressure sensor 2, then the worker puts the first nut 7 on the screw rod 11 and tightens, in the tightening process, the first nut 7 drives the connecting ring 5 to rotate, the elastic sheet 12 is compressed, and the pressure sensor 2 is driven to rotate under the cooperation of the positioning block 3 and the positioning groove 15, so that the pressure sensor 2 remains relatively stationary between the connecting ring 5 and the supporting ring 4, so that the surface of the pressure sensor 2 is not abraded, then the worker puts the second nut 9 on the screw rod 11 and tightens, so that the arc-shaped head 13 is inserted into the accommodating groove 6 on the first nut 7, under the extrusion of the accommodating groove 6, the arc-shaped head 13 is contracted and drives the second nut 9 to contract, increasing the friction between the arc-shaped head 13, the second nut 9 and the screw rod 11, after the opening groove 16 on the second nut 9 is closed, the worker can move the limiting ring 14 into the limiting groove 8 to limit the second nut 9, avoiding the second nut 9 from opening, thereby avoiding the second nut 9 from loosening, and completing the installation.

[0034] Further, as shown in Figure 4 The top of the limiting ring 14 is provided with a convex ring 10, the edge of the convex ring 10 extends to the outside of the second nut 9, so that the worker can conveniently move the limiting ring 14 out of the limiting groove 8, thereby conveniently dismounting the second nut 9.

[0035] Further, the screw rod 11 is made of alloy steel material or high-strength material such as carbon steel, so that the screw rod 11 is not easily deformed under stress in the connection process.

[0036] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A screw assembly with a sensing device, comprising a screw head (1) and a screw rod (11) fixed to the top of the screw head (1), characterized in that: A first nut (7) is fitted on the screw (11), and a second nut (9) is coaxially provided above the first nut (7). Several arc-shaped heads (13) are installed at the bottom of the second nut (9), and an annular space is formed between the several arc-shaped heads (13). The screw (11) passes through the space, and the inner surface of the arc-shaped head (13) is threadedly connected to the screw (11). A receiving groove (6) is provided on the top of the first nut (7). When the first nut (7) and the second nut (9) are tightened, the arc-shaped head (13) extends into the receiving groove (6). A pressure sensor (2) is also fitted on the screw (11). The wiring terminal of the pressure sensor (2) is connected to the controller through a wire. A support ring (4) is installed at the bottom of the pressure sensor (2). The bottom of the support ring (4) is in contact with the equipment. Two connecting rings (5) are also fitted on the screw (11). The two connecting rings (5) are connected by an elastic sheet (12). Both connecting rings (5) are located between the first nut (7) and the pressure sensor (2). The top of the connecting ring (5) located below is provided with several positioning grooves (15). Several positioning blocks (3) are installed on the top of the pressure sensor (2). The top of each positioning block (3) passes through the corresponding positioning groove (15).

2. A screw assembly with a sensing device according to claim 1, characterized in that: There is a gap between two adjacent arc-shaped heads (13), and the receiving groove (6) is tapered.

3. A screw assembly with a sensing device according to claim 2, characterized in that: The second nut (9) has an opening groove (16) on one side. When the arc head (13) extends into the receiving groove (6), the opening groove (16) closes.

4. A screw assembly with a sensing device according to claim 3, characterized in that: The top of the second nut (9) is coaxially provided with a limiting ring (14), and a limiting groove (8) is opened on the top of the second nut (9). When the opening groove (16) of the limiting ring (14) on the second nut (9) is closed, the limiting groove (8) is arranged in a ring shape, and the bottom of the limiting ring (14) extends into the limiting groove (8) and is in clearance fit with the inner wall of the limiting groove (8).

5. A screw assembly with a sensing device according to claim 4, characterized in that: The top of the limiting ring (14) is fitted with a protruding ring (10), the edge of which extends to the outside of the second nut (9).

6. A screw assembly with a sensing device according to claim 1, characterized in that: The elastic sheet (12) is made of elastic metal material.

7. A screw assembly with a sensing device according to claim 1, characterized in that: The screw (11) is made of alloy steel.

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