Inductance type proximity switch for shipborne equipment

Abstract

An inductance type proximity switch for ship-borne equipment comprises an inductance type proximity switch main body, a mounting plate and an adjusting gasket which are integrally formed, the upper end of the inductance type proximity switch main body is a mounting flange, the lower end of the inductance type proximity switch main body is a detection part with a circular cross section, and the mounting flange of the inductance type proximity switch main body is arranged above the mounting plate. The installation flange is fixedly connected with the installation plate through a bolt, a detection part of the inductance type proximity switch main body penetrates through a via hole of the installation plate and extends out from the lower part of the installation plate, an adjusting gasket is arranged between the installation flange and the installation plate, and a cable of the inductance type proximity switch main body is led out from the installation flange.

Description

Technical Field

[0001] The utility model relates to the field of inductive proximity switches, in particular to an inductive proximity switch for shipborne equipment. Background Art

[0002] The principle of an inductive proximity switch is that high-frequency oscillations generated by an LC oscillating circuit radiate a high-frequency alternating magnetic field around an inductor L, which serves as the sensor's sensing surface and is placed in front of the sensor. When a conductive object enters the magnetic field, according to the law of induction, eddy currents are generated within the object. The magnetic field of these eddy currents reacts on the sensor's inductor L, weakening the LC oscillation energy and reducing its amplitude. This process is converted into a switching signal, thereby identifying the presence of approaching metal objects. This type of inductive proximity switch is widely used in shipboard equipment.

[0003] Because shipborne equipment is exposed to the marine environment for long periods of time, the detection end of conventional inductive proximity switches is made of plastic, which is prone to aging or corrosion, leading to damage to the shell and failure of the shipborne equipment. In addition, after the inductive proximity switch is placed in the inductive proximity switch mounting hole of the shipborne equipment, two nuts are respectively provided on either side of the mounting hole, which cooperate with the threads of the inductive proximity switch to fix the inductive proximity switch to the shipborne equipment. However, for some smaller proximity switches, the distance between the two nuts is not large. Using this fixing method can easily cause difficult-to-detect damage to the inductive proximity switch during the nut removal process, affecting the stable operation of the shipborne equipment. For example, when installing the inductive proximity switch, it is necessary to manually tighten the nuts on both sides of the mounting hole. However, if the staff fails to adequately control the force during the tightening process and applies excessive force to securely install the proximity switch, the middle of the proximity switch may be subjected to excessive force, causing damage that cannot be observed with the naked eye, affecting the life and reliability of the proximity switch, and even causing shipborne equipment equipped with such a proximity switch to become unstable during long-term use, resulting in difficult-to-troubleshoot faults. Summary of the Invention

[0004] To address the deficiencies of the prior art, the present invention provides an inductive proximity switch for shipborne equipment, comprising an integrally formed inductive proximity switch body. The integrally formed austenitic stainless steel shell has better sealing and corrosion resistance, and can prevent the marine environment from corroding the inductive proximity switch. The upper end of the inductive proximity switch body in the inductive proximity switch is a mounting flange, and the lower end is a detection portion with a circular cross-section. The mounting flange is fixedly connected to the mounting plate by bolts, which makes the installation method simpler and the installation effect more secure. An adjustment gasket is provided between the mounting flange and the mounting plate, and the sensing distance of the inductive proximity switch body is changed by changing the thickness of the adjustment gasket.

[0005] The technical solution of the present invention is achieved as follows:

[0006] An inductive proximity switch for shipborne equipment includes an integrally formed inductive proximity switch body, a mounting plate, and an adjustment gasket. The upper end of the inductive proximity switch body is a mounting flange, and the lower end is a detection portion with a circular cross-section. The mounting flange of the inductive proximity switch body is placed above the mounting plate, and the mounting flange is fixedly connected to the mounting plate by bolts. The detection portion of the inductive proximity switch body passes through a through hole in the mounting plate and extends from below the mounting plate. An adjustment gasket is provided between the mounting flange and the mounting plate. The cable of the inductive proximity switch body is led out from the mounting flange.

[0007] Preferably, the cross section of the mounting flange is in the shape of a major semicircle.

[0008] Preferably, three screw holes are evenly arranged on the circumference of the semicircular mounting flange of the major arc, and bolts pass through the screw holes to fix the mounting flange to the mounting plate.

[0009] Preferably, the shell of the inductive proximity switch body is made of austenitic stainless steel.

[0010] Preferably, the adjusting gasket and the mounting flange have the same cross-sectional shape.

[0011] Preferably, the thickness of the adjustment gasket is adjusted according to the sensing distance requirement of the inductive proximity switch body.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The inductive proximity switch adopts an integrally formed austenitic stainless steel housing, which has better sealing and corrosion resistance, can prevent the marine environment from corroding the inductive proximity switch and increase the durability of the inductive proximity switch;

[0014] Three screw holes are evenly spaced around the semicircular mounting flange, through which bolts pass to securely connect the mounting flange of the inductive proximity switch to the mounting plate. It is noteworthy that during the production of this proximity switch, all bolts are inserted through the corresponding screw holes and tightened using an automatic bolt tightening device. The tightening torque and angle, among other parameters, are monitored in real time to ensure that the bolt tightening meets the specified requirements, securing the mounting flange of the inductive proximity switch to the mounting plate. This prevents damage to the proximity switch during the bolt tightening process by personnel.

[0015] The inductive proximity switch body has a mounting flange at its upper end (or, in other words, a mounting flange is provided at its upper end for mounting and fixing the inductive proximity switch), and a detection portion with a circular cross-section at its lower end (the detection portion is generally cylindrical, i.e., the detection portion has a circular cross-section). The mounting flange is fixedly connected to a mounting plate with bolts, and the mounting plate is then fixedly connected to the shipborne equipment with bolts. This installation method is not only simple to install, but also completely avoids damage to the proximity switch body caused by traditional installation methods, greatly improving the service life of the proximity switch and the operational reliability of the shipborne equipment equipped with such a proximity switch.

[0016] An adjustment gasket is provided between the mounting flange and the mounting plate. By changing the thickness of the adjustment gasket, the sensing distance of the proximity switch body can be changed.

[0017] The reliability of inductive proximity switches used in shipborne equipment has been improved. Each inductive proximity switch can reduce the cost of replacing wearing parts and labor costs by 200 yuan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 yes Figure 1 A-direction view. DETAILED DESCRIPTION

[0020] See also Figures 1 to 2 An inductive proximity switch for shipborne equipment includes an integrally formed inductive proximity switch body 1, a mounting plate 2, and an adjustment gasket 3. The shell of the inductive proximity switch body 1 is made of austenitic stainless steel, specifically 316L stainless steel. The upper end of the inductive proximity switch body 1 is a mounting flange 4, the cross-section of the mounting flange 4 is a semicircular arc, and the lower end is a detection portion 5 with a circular cross-section. The mounting flange 4 of the inductive proximity switch body 1 is placed above the mounting plate 2. Three screw holes are evenly arranged on the circumference of the semicircular arc mounting flange 4. Bolts pass through the screw holes to fix the mounting flange 4 to the mounting plate 2. Then, the detection part 5 of the inductive proximity switch body 1 passes through the through hole of the mounting plate 2 and extends from the bottom of the mounting plate 2. An adjustment gasket 3 is provided between the mounting flange 4 and the mounting plate 2. The adjustment gasket 3 and the mounting flange 4 have the same cross-sectional shape. The thickness of the adjustment gasket 3 is adjusted according to the sensing distance requirement of the inductive proximity switch body 1. The greater the thickness of the adjustment gasket 3, the smaller the sensing distance of the inductive proximity switch body 1, and the thinner the thickness of the adjustment gasket 3, the greater the sensing distance of the inductive proximity switch body 1. The cable 6 of the inductive proximity switch body 1 is led out from the center of the upper end surface of the mounting flange 4.

[0021] During installation, the mounting plate 2 can be installed on the shipboard equipment by means of bolt fixing or the like through the bolt holes provided around the mounting plate 2 .

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An inductive proximity switch for shipborne equipment, characterized in that: The invention comprises an inductive proximity switch body (1) and a mounting plate (2) formed in one piece, wherein the upper end of the inductive proximity switch body (1) is a mounting flange (4), and the lower end is a detection portion (5) with a circular cross section, the mounting flange (4) of the inductive proximity switch body (1) is placed above the mounting plate (2), the mounting flange (4) and the mounting plate (2) are fixedly connected by bolts, the detection portion (5) of the inductive proximity switch body (1) passes through a through hole of the mounting plate (2) and extends from the bottom of the mounting plate (2), an adjustment gasket (3) is provided between the mounting flange (4) and the mounting plate (2), and the cable (6) of the inductive proximity switch body (1) is led out from the mounting flange (4).

2. The inductive proximity switch for shipborne equipment according to claim 1, wherein: The cross section of the mounting flange (4) is in the shape of a major arc semicircle.

3. The inductive proximity switch for shipborne equipment according to claim 2, wherein: Three screw holes are evenly arranged on the circumference of the semicircular mounting flange (4), and bolts pass through the screw holes to fix the mounting flange (4) to the mounting plate (2).

4. The inductive proximity switch for shipborne equipment according to claim 1, wherein: The shell of the inductive proximity switch body (1) is made of austenitic stainless steel.

5. The inductive proximity switch for shipborne equipment according to claim 1, wherein: The adjusting gasket (3) and the mounting flange (4) have the same cross-sectional shape.

6. The inductive proximity switch for shipborne equipment according to claim 1, wherein: The thickness of the adjustment gasket (3) is adjusted according to the sensing distance requirement of the inductive proximity switch body (1).

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