Protective cover of mining pressure transmitting sensor

Abstract

The utility model discloses a protective cover of a mining pressure transmitting sensor, which comprises a cover body which is of a hollow cylindrical structure, threaded grooves are formed in the inner walls of the upper top end and the lower top end of the cover body, and the threaded grooves in the top end of the cover body are in threaded connection with a sensor connector. And the threaded groove at the top end of the cover body is in threaded connection with the sensor output interface. According to the protective cover of the pressure transmitting sensor for the mine, the auxiliary mounting structure is arranged in the protective cover, and after an external sensor output connector and the cover body are detached, the four mounting limiting rods can directly reset and pop out of the top end of the cover body under the action of the reset springs; therefore, the purpose of facilitating the maintenance of the pressure sensitive element and the amplifying circuit by a worker is achieved, the pressure sensitive element and the amplifying circuit are not damaged during the whole maintenance, and the operation is very convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of mine pressure transmitter sensors, specifically a protective cover for a mine pressure transmitter sensor. Background Technology

[0002] Mining pressure transmitters are pressure monitoring devices used in harsh environments such as underground coal mines. They are widely used in fluid pressure detection, hydraulic support systems, pump station systems, and other scenarios in mines. The protective cover of the mining pressure transmitter is an important component used to protect the sensor from the harsh environment of the mine. It is designed as a hollow cylindrical structure, and the installation between the sensor connector and the sensor output interface is completed through the threaded mechanism at the top and bottom of the cylindrical structure.

[0003] However, existing protective covers on the market are simply hollow structures with a through-hole. When placing pressure-sensitive components and amplification circuits, to ensure their stable engagement inside, these components typically engage with the inside of the protective cover through friction. Consequently, when disassembling and repairing the pressure-sensitive components and amplification circuits, workers must manually pry them out from inside the protective cover. This process is cumbersome, and manual prying can damage the pressure-sensitive components and amplification circuits, increasing the cost of disassembly. Utility Model Content

[0004] The purpose of this utility model is to provide a protective cover for a mining pressure transmitter sensor, so as to solve the problem mentioned in the background art that the protective covers currently on the market do not have corresponding auxiliary installation structures inside, which makes it very inconvenient to install and disassemble the pressure sensitive element and amplification circuit.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a protective cover for a mine pressure transmitter sensor, comprising a cover body, which is a hollow cylindrical structure, and threaded grooves are provided on the inner walls of its upper and lower top ends. The threaded grooves at the top ends of the cover body are threadedly connected to the sensor connector, and the threaded grooves at the top ends of the cover body are threadedly connected to the sensor output interface.

[0006] The enclosure is equipped with an auxiliary installation structure for assisting in the installation of pressure-sensitive components and amplification circuits. The auxiliary installation structure moves up and down inside the enclosure, causing the pressure-sensitive components and amplification circuits to move upwards, thus facilitating installation and disassembly by personnel.

[0007] Preferably, the inner wall of the cover has four sets of reserved grooves distributed at equal angles, and the reserved grooves are engaged with the auxiliary installation structure.

[0008] Preferably, the auxiliary installation structure includes an installation block and an installation limiting rod, the installation block engages with the reserved groove, and the inner side of the installation block is also provided with a sliding groove.

[0009] Preferably, the cross-section of the mounting limiting rod is L-shaped, and a connecting slider is integrally mounted on its outer side, the connecting slider sliding in a groove inside the mounting block.

[0010] Preferably, a return spring is provided at both the upper and lower positions of the connecting slider, and the outer side of the return spring engages with the inner wall of the groove.

[0011] Preferably, the initial length of the return spring located below the slide groove is greater than two-thirds of the length of the reserved groove, and the initial length of the return spring located above the slide groove is less than one-third of the length of the reserved groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The protective cover of the mining pressure transmitter sensor has an auxiliary installation structure inside the cover. When the top of the cover is not threaded to the sensor output connector, the installation limit rods on the auxiliary installation structure are always in a position protruding from the top of the cover. Therefore, the operator can easily place the pressure sensitive element and the amplification circuit in the middle of the four installation limit rods for locking. It is also convenient for maintenance. When the external sensor output connector is disassembled from the cover, the four installation limit rods can be directly reset and popped out of the top of the cover under the action of the return spring. This achieves the purpose of facilitating the operator to maintain the pressure sensitive element and the amplification circuit without damaging the pressure sensitive element and the amplification circuit during the maintenance process. The operation is very convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the semi-sectional main view structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of this utility model from a half-section bottom view;

[0016] Figure 4 This is a schematic diagram of a half-section of the cover body of this utility model;

[0017] Figure 5 This is a partially enlarged schematic diagram of the auxiliary installation structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the disassembled connection structure between the installation limit rod and the installation block of this utility model.

[0019] In the diagram: 1. Cover; 11. Threaded groove; 12. Reserved groove; 2. Mounting block; 3. Mounting limit rod; 4. Return spring; 5. Connecting slider. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-6 This utility model provides a technical solution: a protective cover for a mine pressure transmitter sensor, including a cover body 1, which is a hollow cylindrical structure. Threaded grooves 11 are provided on the inner walls of its upper and lower top ends. The threaded grooves 11 at the top of the cover body 1 are threadedly connected to the sensor connector, and the threaded grooves 11 at the top of the cover body 1 are threadedly connected to the sensor output interface.

[0022] The enclosure 1 has an auxiliary installation structure inside, which is used to assist in the installation of pressure-sensitive components and amplification circuits. The auxiliary installation structure moves up and down inside the enclosure 1, causing the pressure-sensitive components and amplification circuits to move upward, so as to facilitate the installation and disassembly by the staff.

[0023] Four sets of reserved slots 12 are distributed at equal angles on the inner wall of the cover 1, and the reserved slots 12 and the auxiliary installation structure are engaged with each other. Through the reserved slots 12, after the cover 1 is produced, the auxiliary installation structure is directly engaged with the reserved slots 12, thereby facilitating the production and assembly of the cover 1 and improving the efficiency of subsequent production and processing.

[0024] The auxiliary installation structure includes an installation block 2 and an installation limit rod 3. The installation block 2 engages with the reserved groove 12, and a sliding groove is also provided on the inner side of the installation block 2.

[0025] The installation limit rod 3 has an "L" shaped cross section, and a connecting slider 5 is integrally installed on its outer side. The connecting slider 5 slides in the groove inside the installation block 2.

[0026] A return spring 4 is provided at both the upper and lower positions of the connecting slider 5, and the outer side of the return spring 4 engages with the inner wall of the slide groove.

[0027] The initial length of the return spring 4 located below the slide groove is greater than two-thirds of the length of the reserved groove 12, while the initial length of the return spring 4 located above the slide groove is less than one-third of the length of the reserved groove 12.

[0028] The auxiliary installation structure inside the four reserved slots 12 assists in the installation of the pressure-sensitive element and the amplification circuit. During the auxiliary installation, initially, the connecting slider 5 at the top of the mounting limit rod 3 is positioned slightly above the groove inside the mounting block 2. This causes the connecting slider 5 to move the mounting limit rod 3 to the top of the protruding cover 1. Therefore, the operator can then engage the pressure-sensitive element and the amplification circuit in the middle of the four mounting limit rods 3. Subsequently, when the operator installs the sensor's output connector, the top of the sensor's output connector will engage with the top of the mounting limit rod 3. The compression causes the connecting slider 5 inside the mounting limit rod 3 to descend under the action of the return spring 4 inside the slide groove until it is fully engaged inside the cover 1. Then, the sensor output connector and the threaded groove 11 at the top of the cover 1 are threaded together, thus completing the installation. Afterwards, when the sensor output connector is threadedly separated from the cover 1, the top of the mounting limit rod 3, without the limit of the sensor output connector, will move upward under the reset action of the return spring 4. Thus, the mounting limit rod 3 will cause the pressure sensitive element and the amplification circuit to protrude from the inside of the cover 1, which makes it easier for the staff to carry out inspection and maintenance work.

[0029] In this application, the pressure-sensitive element is the core component of the sensor, used to convert the pressure of the measured medium into an electrical signal. Common pressure-sensitive elements include piezoresistive, strain gauge, and capacitive types. The amplification circuit amplifies and processes the weak electrical signal output by the pressure-sensitive element, ultimately converting it into a standard output signal. Finally, the output signal is received by the sensor output connector and transmitted to external devices such as monitoring systems or PLCs for display. Content not described in detail in this specification constitutes prior art known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective cover for a mining pressure transmitter sensor, comprising: The cover (1) is a hollow cylindrical structure with threaded grooves (11) on the inner walls of its upper and lower top ends. The threaded grooves (11) at the top of the cover (1) are threadedly connected to the sensor connector, and the threaded grooves (11) at the top of the cover (1) are threadedly connected to the sensor output interface. Its features are, The enclosure (1) is equipped with an auxiliary installation structure for assisting in the installation of pressure-sensitive elements and amplification circuits. The auxiliary installation structure moves up and down inside the enclosure (1), causing the pressure-sensitive elements and amplification circuits to move upward, thus facilitating installation and disassembly by the staff.

2. The protective cover for a mine pressure transmitter sensor according to claim 1, characterized in that: The inner wall of the cover (1) has four sets of reserved grooves (12) distributed at equal angles, and the reserved grooves (12) and the auxiliary installation structure are interlocked.

3. The protective cover for a mine pressure transmitter sensor according to claim 1, characterized in that: The auxiliary installation structure includes an installation block (2) and an installation limiting rod (3). The installation block (2) engages with the reserved groove (12), and a sliding groove is also provided on the inner side of the installation block (2).

4. The protective cover for a mine pressure transmitter sensor according to claim 3, characterized in that: The installation limiting rod (3) has an "L" shaped cross section and a connecting slider (5) is integrally installed on its outer side. The connecting slider (5) slides in the groove inside the installation block (2).

5. The protective cover for a mine pressure transmitter sensor according to claim 4, characterized in that: The connecting slider (5) is provided with a return spring (4) at both the upper and lower positions, and the outer side of the return spring (4) engages with the inner wall of the groove.

6. The protective cover for a mine pressure transmitter sensor according to claim 5, characterized in that: The initial length of the return spring (4) located below the slide groove is greater than two-thirds of the length of the reserved groove (12), and the initial length of the return spring (4) located above the slide groove is less than one-third of the length of the reserved groove (12).

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