CN216199735U

CN216199735U - Saddle-shaped elastic washer for threaded connection

Info

Publication number: CN216199735U
Application number: CN202120919470.3U
Authority: CN
Inventors: 白科研; 李东升; 程楼; 罗钦; 杨艳玲
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-04-05
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a saddle-shaped elastic washer for threaded connection, which can deform and comprises an elastic main body and a small supporting piece, wherein the appearance structure of the saddle-shaped elastic washer is saddle-shaped, and the saddle-shaped elastic washer is different from the elastic washer in that: four end planes are processed on two sides of the saddle-shaped elastic main body, four cambered surfaces are additionally processed on the upper surface and the lower surface of the saddle-shaped concave part, and two grooves and two lead grooves are formed in the saddle-shaped elastic gasket structure. The utility model has the following advantages and effects: the four end planes processed on the two sides of the saddle-shaped elastic washer can increase the contact area with the connecting piece, thereby increasing the friction force and achieving a good anti-loosening effect; the lower concave surface of this saddle elastic main part can set up the sensor, and the sensor lead wire is drawn forth through the lead wire groove, transmits the groove, is connected with the miniature integrated circuit board that groove set up, senses the deformation signal of saddle elastic washer through wireless communication transmission high in the clouds to the sensor, makes things convenient for the staff real-time supervision screw thread coupling pretightning force's size to learn whether the screw thread coupling is not hard up or the fracture. After the saddle-shaped elastic gasket is additionally provided with the sensor and the micro integrated circuit board, the effect of a measuring device can be achieved, the structure and the function have the advantage of integration, and the saddle-shaped elastic gasket has a wide application prospect.

Description

Saddle-shaped elastic washer for threaded connection

The technical field is as follows:

the utility model relates to a saddle-shaped elastic washer for threaded connection, belonging to the technical field of bolted gasket connection in mechanical engineering.

Background art:

the bolt connection is applied to various industries and has the functions of strengthening connection, sealing and the like. In most cases, when the bolt connection is collided and impacted for a long time, the bolt can become loose or lose efficacy, and finally serious accidents such as separation and leakage of the connecting piece occur. Therefore, most of the bolts are connected by adding washers, and after the washers are pressed, a rebound force is generated to increase the friction force between the threads, so that the friction force effectively prevents the bolt from loosening. From this point of view, the skilled researchers thought to add sensors in the washers to monitor bolt loosening to predict the safety of the equipment. With the development of modern automation technology, the country pays more attention to the technology of unmanned safety monitoring, so that it is very important and meaningful to research and design an elastic washer capable of placing a sensor and monitoring the connection pretightening force of a bolt in real time.

The bolts must be tightened during use, and when tightened, are subjected to tensile loads and thus to axial tension, which is referred to as pretension. Starting from the fact that the pretension changes when the bolt becomes loose or fails, methods for monitoring the pretension and the torque of the bolt are mostly used in the prior art. Torque measurement method: when the bolt is tightened, a torque force exists, when the bolt is loosened, the torque changes, the bolt connection can be detected in a timing mode by adopting a torque meter, but the torque meter is inducted on a power head, the detection is unstable, a measurement error is generated, and an operator cannot monitor the bolt connection in real time; the sensor method comprises the following steps: as described above, a sensor is added in the gasket to sense the variation of the pretightening force of the bolt, but in the prior art, the structure in the gasket is too complex, the number of sensors is too large, the external circuit is complex, the manufacturing cost is high, and the fundamental problem cannot be solved.

The utility model has the following contents:

aiming at the defects of the problems, the utility model provides a saddle-shaped elastic washer for threaded connection, which is characterized in that four end planes are arranged on a structure similar to the saddle-shaped washer, a small supporting piece is embedded in the cambered surface of the lower recess of the washer, and the saddle-shaped elastic washer is also provided with two lead grooves and two grooves. Can set up the sensor at the lower concave surface of saddle elastic washer, transmit groove through the lead wire groove, groove can set up miniature integrated circuit board, the deformation signal that senses the sensor transmits the high in the clouds, makes things convenient for staff's real-time supervision through the wireless communication module on the miniature integrated circuit board. The gasket can achieve the purposes of monitoring the bolt pretightening force in real time and reducing the cost by considering factors such as convenience in sensor adhesion, induction sensitivity, structural appearance, simple manufacture, economic cost and the like.

In order to meet the requirements, the saddle-shaped elastic washer for bolt connection is characterized by comprising a saddle-shaped washer body similar to a saddle and eight small supporting pieces, wherein the washer structure is provided with four end planes, four arc surfaces, two lead grooves and two grooves, the eight small supporting pieces are embedded into the lower concave surface of the elastic washer, a sensor can be arranged on the lower concave surface of the four arc surfaces, the lead wires of the sensor are led out through the lead grooves and connected to a micro integrated circuit board at the groove, and the lead wires can be connected with a bridge circuit, an amplifier, an A/D conversion circuit and the like as the signals sensed by the sensor are weak, then are transmitted to the cloud end through a microprocessor and a connector and a wireless communication module, and then can be connected to a database for data transmission and real-time monitoring of workers.

Preferably, the washer body is shaped like a saddle.

Preferably, the saddle washer structure is provided with end planes, the number of planes being 4.

Preferably, the saddle-shaped gasket structure is provided with 4 cambered surfaces, two lower concave surfaces and two upper convex surfaces.

Preferably, the saddle-shaped elastic washer is symmetrically embedded with the same support members on two concave surfaces, and the number of the support members is 8.

Preferably, the saddle washer body is provided with two lead grooves.

Preferably, the saddle washer body is provided with two recesses.

Compared with the prior art, the utility model has the following beneficial effects:

1. the saddle-shaped elastic washer is simple in appearance structure, easy to process and produce in batches, convenient to paste and sensitive in sensing;

2. the lower concave surface of the saddle-shaped elastic washer is embedded with 8 small supporting pieces, and when the elastic washer is used for bolt connection and is pressed flat, the small supporting pieces play a role in protecting the sensor from being extruded;

3. the saddle-shaped gasket main body is provided with four cambered surfaces, two lower concave surfaces of the four cambered surfaces can be provided with two same sensors, when the pretightening force applied to the gasket main body is changed, the sensors sense a signal which causes the deformation of the gasket main body due to the connection and vibration of the bolt, and the signals are transmitted, processed and controlled through the lead wire groove and the groove and wirelessly communicated, so that the long-distance real-time monitoring of workers is facilitated;

4. through considering factors such as convenient pasting of sensor, response sensitivity, structure appearance and simple manufacturing, can reach the purpose of real-time supervision bolt pretightning force behind the increase sensor, make structure and function have the characteristics of integration, have wide application prospect, in addition this packing ring is the same with ordinary saddle shape packing ring material to can reach the practicality and strong, with low costs purpose, can regard as intelligent packing ring long-term use behind sensor and the miniature integrated circuit board.

Description of the drawings:

to more clearly illustrate the prior art solution of the present invention, the following briefly introduces the drawings that are needed in the description of the present invention and the prior art.

FIG. 1 is a schematic structural view of a saddle-shaped elastic washer for threaded coupling according to the present invention;

FIG. 2 is a front view of the saddle shaped elastomeric washer body;

FIG. 3 is a top view of the saddle shaped elastomeric washer body;

FIG. 4 is an opposite side view of a top view of the saddle shaped elastomeric washer body;

fig. 5 is a schematic view of the working state of the present invention.

The specific implementation mode is as follows:

the present invention relates to a saddle-shaped elastic washer for screw coupling, and a detailed description will be given below of an embodiment of the present invention with reference to the accompanying drawings.

A saddle-shaped elastic washer for threaded connection is disclosed, referring to fig. 1, and comprises a washer main body (1) and a small support member (6), wherein two ends of the elastic main body (6) are provided with four end planes which are respectively a first end plane (2), a second end plane (3), a third end plane (4) and a fourth end plane (5), a concave part of the elastic main body (1) is provided with four arc surfaces, the four arc surfaces can be divided into two lower concave surfaces and two upper convex surfaces, and the elastic washer main body is provided with two lead grooves and two grooves.

Referring to fig. 1 and 2, the number of the small supporting pieces is 8, the small supporting pieces are symmetrically embedded in two cambered surfaces of the lower concave surface of the elastic gasket main body (1), and the outer diameter D of the gasket main body (1) is 1.5-6.5 times of the thickness h of the gasket main body.

Referring to fig. 3 and 4, two lower concave surfaces of four arc surfaces of the elastic gasket main body are respectively a first lower concave surface (9) and a second lower concave surface (10), two upper convex surfaces are respectively a first upper convex surface (13) and a second upper convex surface (14), two lead grooves are respectively a first lead groove (11) and a second lead groove (12), and two grooves are respectively a first groove (7) and a second groove (8).

Referring to fig. 5, when the saddle-shaped elastic washer is applied to a bolt connection position, a bolt sequentially penetrates through a connecting plate (16), a leather washer (15), a saddle-shaped elastic washer body (1) and a nut (17), and the nut (17) is screwed, at the moment, the elastic washer body (1) is pressed, and if sensors are arranged on a first concave surface (9) and a second concave surface (10) of the saddle-shaped elastic washer, at the moment, the small supporting piece can well protect the sensors from being damaged, and the sensors can monitor the pretightening force of bolt connection in real time.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention belong to the technical scope of the present invention.

Claims

1. The saddle-shaped elastic gasket for threaded connection is characterized by comprising an elastic main body (1) and a small supporting piece (6), wherein four end planes, namely a first end plane (2), a second end plane (3), a third end plane (4) and a fourth end plane (5), are arranged at two ends of the elastic main body (1), four arc surfaces are arranged at a concave part of the elastic main body (1), the four arc surfaces can be divided into two lower concave surfaces and two upper convex surfaces, namely a first lower concave surface (9), a second lower concave surface (10), a first upper convex surface (13) and a second upper convex surface (14), the elastic main body (1) looks like a circular gasket from a top view, and the appearance structure of the elastic main body is saddle-shaped.

2. A saddle-shaped elastic washer for threaded coupling according to claim 1, wherein: two lead grooves, namely a lead groove I (11) and a lead groove II (12), are arranged in the structure of the elastic main body (1).

3. A saddle-shaped elastic washer for threaded coupling according to claim 1, wherein: two grooves, namely a groove I (7) and a groove II (8), are arranged in the structure of the elastic main body (1).

4. A saddle-shaped elastic washer for threaded coupling according to claim 1, wherein: the lower concave surface of the elastic main body (1) is embedded with 8 small supporting pieces (6) which are symmetrically stuck.

5. A saddle-shaped elastic washer for threaded coupling according to claim 1, wherein: the outer diameter of the elastic main body (1) is 1.5-6.5 times of the thickness of the gasket main body.