CN216558828U

CN216558828U - Sensor structure for monitoring relative displacement of bolt connection pair

Info

Publication number: CN216558828U
Application number: CN202122735949.4U
Authority: CN
Inventors: 张洪平; 龙勃; 李墨涵
Original assignee: Shenyang Zhihang Intelligent System Co ltd
Current assignee: Shenyang Zhihang Intelligent System Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-05-17
Anticipated expiration: 2031-11-10

Abstract

The utility model provides a sensor structure for monitoring relative displacement of a bolt connection pair, which comprises a bottom battery bin, a circuit core bin and a sealing bin, wherein the bottom battery bin is connected with the circuit core bin; the circuit core bin is arranged on the round external thread of the bottom battery bin; the sealing bin is arranged in a prefabricated internal thread on the circuit core bin to form the monitoring device; the monitoring device is arranged on the end face inside the bolt connection sub-assembly; the lithium battery is connected with a power end of a circuit board of the monitoring device through a pluggable connector; the circuit board is directly arranged on a boss of the circuit core bin and is directly pressed and fixed through the sealing bin; the wireless monitoring system is small and flexible in structure, convenient to install, capable of being repeatedly disassembled and used, and has the advantages of being continuous in monitoring, strong in expansibility, good in universality and the like, networking can be achieved in real time by utilizing a wireless communication technology, and the problems that other existing technologies are high in cost and discontinuous in monitoring are solved.

Description

Sensor structure for monitoring relative displacement of bolt connection pair

Technical Field

The utility model relates to the field of relative displacement monitoring of high-strength bolt connection pairs, in particular to a sensor structure for monitoring relative position change caused by looseness or deformation in the use process of nuts or bolts in the industrial field.

Background

The high-strength bolt connection pair is a mechanical part which is used for fastening connection and has wide application. The bolt connection pair is the most widely applied bolt connection pair in various industries such as railway bridges, aerospace, rail transit, automobile manufacturing, ship manufacturing, wind power nuclear power, water conservancy construction and the like, the relative displacement state of the bolt connection pair is directly related to the safe operation of facility equipment in the industry, and once the bolt connection pair falls off and fails, the effect caused by the bolt connection pair cannot be measured.

The bolt connecting pair can generate plastic deformation under the action of long-term load, so that the bolt connecting pair generates relative displacement around a mounting point, the bolt connecting pair can be caused to lose efficacy, and the conventional detection method for the bolt connecting pair has the functions of detecting the change of pretightening force, a piezoelectric gasket and the like. The methods can detect the change of the pretightening force of the bolt connecting pair, but the pretightening force detection scheme has high cost and cannot be applied in batch. Because the bolt connection pair is huge in use amount in an industrial environment and is influenced by a construction process, a construction environment and long-term load change, whether the bolt connection pair generates relative displacement change or not is difficult to be accurately mastered, and the bolt connection pair also needs to be ensured by a mode of manually and periodically carrying out routing inspection, thereby increasing the accident occurrence probability and a large amount of labor cost, especially in remote areas, often the detection period is too long, which increases the safety risk invisibly, if the bolt connection pair is monitored comprehensively in the service process, operation and maintenance personnel can completely master the historical state and the loosening time of the fastener and judge the loosening authenticity of the bolt connection pair, so that not only can safety accidents be avoided, but also the maintenance personnel can implement effective maintenance measures more pertinently, thereby eliminating accident potential, reducing accident risks and greatly reducing the manual maintenance cost.

The monitoring sensor development structure can monitor the relative displacement conditions of various types of bolt connection pairs and send the offset value of the relative displacement of the bolt connection pairs through a wireless communication transmission technology. The monitoring device is simple in structure, stable in performance, strong in reliability, convenient to install and capable of monitoring the state condition of the fastener in real time.

SUMMERY OF THE UTILITY MODEL

The technical problem that this patent will be solved is: in order to overcome the problems, the sensor structure for monitoring the relative displacement of the bolt connecting pair is provided, is reasonable in design, easy to install, capable of being repeatedly disassembled and used, low in cost, strong in expansibility, good in universality and the like, and can obviously improve the application range and the using effect of the displacement change monitoring technology of the bolt connecting pair.

The design principle that this patent adopted is: when the relative displacement between the components of the bolt connection pair changes, the displacement sensor can sense the change. The specification of the bolt connection pair is known, and the minimum plane dimension of the bolt connection pair is taken as a radius

Small variation of sensor perception

Calculated as the amount of relative displacement change

The calculation formula is as follows.

Wherein the content of the first and second substances,

Figure DEST_PATH_330029DEST_PATH_IMAGE002

is the minimum sensing variation of the displacement sensor.

Figure DEST_PATH_716011DEST_PATH_IMAGE003

Is the minimum output variation of the displacement sensor.

And r is the minimum inner diameter of the tested bolt connection sub assembly.

The technical scheme adopted by the patent for solving the technical problem is as follows:

a sensor structure for monitoring relative displacement of a bolt connection pair comprises a bottom battery bin, a circuit core bin and a sealing bin; the circuit core bin is arranged on the round external thread of the bottom battery bin; the sealing bin is arranged in a prefabricated internal thread on the circuit core bin to form the monitoring device; the monitoring device is arranged on the end face inside the bolt connection sub-assembly; the lithium battery is connected with a power end of a circuit board of the monitoring device through a pluggable connector; the circuit board is directly arranged on a boss of the circuit core bin and is directly pressed and fixed through the sealing bin;

the center of the bottom battery compartment is provided with an oval groove for placing the lithium battery, the outside of the bottom battery compartment is provided with a thread, the thread is arranged in the circuit core compartment, and then the lithium battery is pressed through the circuit core compartment; the bottom battery compartment for lithium cell assembly and fixed use realize simultaneously that sensor and bolted connection are vice pastes and provide fixed position, adopt the fixed lithium cell of crimping formula in the storehouse, adopt the screw thread mode with circuit core storehouse to install, make things convenient for follow-up change battery.

The circuit core bin is provided with a circular through hole at the center and is used for penetrating through a pluggable joint of the lithium battery, a boss is arranged on the periphery of the inner wall of the circuit core bin and is used for supporting a fixed circuit board, and the inner wall of the upper half part of the circuit core bin is provided with threads and is used for connecting a sealed bin; the circuit core bin is used for installing and fixing the circuit board, is connected with the bottom battery bin and the sealing bin simultaneously, and supports the circuit board in a boss mode in the bin, so that the circuit board cannot shift, and the measurement accuracy of the offset value of the relative displacement of the fastener is guaranteed.

The sealing bin is provided with a countersunk head thread, is directly connected to the circuit core bin, is pressed on the circuit board, and is simultaneously sealed in a waterproof way by a sealing ring. The sealed cabin is used for sealing and compacting the circuit board to meet the sealing requirement of the sensor, the sponge is used for filling the cabin, electronic components on the circuit board are protected, and meanwhile, the wireless communication antenna is installed to ensure the stability of wireless networking.

The advantages and the characteristics of the utility model are as follows:

the sensor development structure scheme has the advantages of being small and exquisite in structure, flexible, convenient to install, capable of being repeatedly disassembled and used, capable of achieving continuous monitoring, strong in expansibility, good in universality and the like, capable of achieving real-time networking by utilizing a wireless communication technology, and capable of solving the problems that other existing technologies are high in cost and monitoring is not continuous.

Drawings

The foregoing is merely an overview of the technical solutions of the present patent, and in order to make the patent more clearly understood, the following detailed description of the patent is given with reference to the accompanying drawings and the detailed description.

The scores in the figures are as follows: 1. bottom battery compartment, 2, circuit core storehouse, 3, sealed storehouse, 4, circuit board, 5, lithium cell.

FIG. 1 is a schematic diagram of a sensor for monitoring relative displacement of a bolted joint according to the present invention;

FIG. 2 is a schematic view of the bottom battery compartment of the present invention;

FIG. 3 is a schematic diagram of a core bin of the circuit of the present invention;

fig. 4 is a schematic view of a capsule according to the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The parts not described in the present invention are all the prior art or standard products, and are not described again.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. And therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected through an intermediate medium, and communicate between two elements. The specific meaning of the above terms in the present invention can be specifically understood by those of ordinary skill in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Fig. 1 is a schematic structural diagram of a sensor for monitoring relative displacement of a bolted connection pair, which includes a bottom battery compartment 1, a circuit core compartment 2, and a sealing compartment 3. The circuit core bin 2 is arranged on the round external thread of the battery bin 1 at the bottom. The sealing bin 3 is arranged in a prefabricated internal thread on the circuit core bin 2 to form the monitoring device. The monitoring device is arranged on the end face inside the bolt connection sub-assembly. The lithium battery 5 is connected with the power end of the circuit board of the monitoring device through the pluggable connector. The circuit board 4 is directly installed on the boss of the circuit core bin 2 and is directly pressed and fixed through the sealing bin 1.

Fig. 2 is a schematic structural diagram of the bottom battery compartment 1, in which the center is an oval groove for placing the lithium battery 4, and the exterior of the bottom battery compartment 1 is a screw thread which is installed in the circuit core compartment 2 and then presses the lithium battery 5 through the circuit core compartment 2.

Fig. 3 shows the circuit core bin 2, the center of which is a circular through hole for passing through the pluggable connector of the lithium battery 5, a boss is arranged on the periphery of the inner wall of the circuit core bin 2 for supporting a fixed circuit board, and the inner wall of the upper half part of the circuit core bin 2 is provided with threads for connecting the sealed bin 1.

Fig. 4 shows the sealing chamber 3, a countersunk screw thread is processed on the sealing chamber 3, the sealing chamber is directly connected to the circuit core chamber 2, and the sealing chamber is pressed on the circuit board, and the periphery of the circuit core chamber is sealed by a sealing ring in a waterproof manner.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should, without their teaching, appreciate that they can readily devise similar arrangements and embodiments without departing from the spirit and scope of the utility model.

Claims

1. A sensor structure for monitoring relative displacement of a bolt connection pair comprises a bottom battery bin, a circuit core bin, a sealing bin and a lithium battery; the method is characterized in that: the circuit core bin is arranged on the round external thread of the bottom battery bin; the sealing bin is arranged in a prefabricated internal thread on the circuit core bin to form a monitoring device; the monitoring device is arranged on the end face inside the bolt connection sub-assembly; the lithium battery is connected with a power end of a circuit board of the monitoring device through a pluggable connector; the circuit board is directly arranged on a boss of the circuit core bin and is directly pressed and fixed through the sealing bin;

the center of the bottom battery compartment is provided with an oval groove for placing the lithium battery, the outside of the bottom battery compartment is provided with a thread, the thread is arranged in the circuit core compartment, and then the lithium battery is pressed through the circuit core compartment;

the center of the circuit core bin is provided with a circular through hole for penetrating through a pluggable connector of a lithium battery, the periphery of the inner wall of the circuit core bin is provided with a boss for supporting a fixed circuit board, and the inner wall of the upper half part of the circuit core bin is provided with threads for connecting a sealing bin;

the sealing bin is provided with a countersunk head thread, is directly connected to the circuit core bin, is pressed on the circuit board, and is simultaneously sealed in a waterproof way by a sealing ring.