Non-contact real-time displacement sensor

Abstract

The utility model relates to the technical field of displacement sensors, and discloses a non-contact real-time displacement sensor, which comprises a sleeve and a hammer rod, reflective strips are arranged on the upper part of the hammer rod at equal intervals, a photoelectric switch is arranged on one side of the exterior of the sleeve, one end of the photoelectric switch penetrates and extends into the sleeve, and the other end of the photoelectric switch is connected with the hammer rod. One end of the photoelectric switch in the sleeve is close to the reflective strip; the air cylinder is arranged at the upper end of the sleeve, and the output end of the air cylinder is fixedly connected with the hammer rod. The reflective strip is arranged on the upper portion of the hammer rod and matched with non-contact components such as the photoelectric switch, displacement of the hammer rod is accurately detected, and accuracy and environmental adaptability are improved.

Description

Technical Field

[0001] This utility model relates to the field of displacement sensor technology, specifically a non-contact real-time displacement sensor. Background Technology

[0002] In the automated production process of aluminum electrolysis cells, the displacement sensors of the shell-breaking cylinders often suffer from the problems of broken ropes or bent rods due to harsh environmental factors such as high temperature, strong magnetic field, and large dust, as well as the problem of broken ropes or bent rods caused by the high-speed movement of the hammer. This affects the accuracy and reliability of displacement measurement.

[0003] Traditional contact displacement sensors have short lifespans and high maintenance costs in such environments, so a non-contact real-time displacement sensor is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, this utility model provides a non-contact real-time displacement sensor to solve the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a non-contact real-time displacement sensor, comprising:

[0008] A sleeve and a hammer rod, wherein reflective strips are installed at equal intervals on the upper part of the hammer rod, and a photoelectric switch is installed on the outer side of the sleeve, one end of the photoelectric switch penetrating and extending into the interior of the sleeve, and the photoelectric switch is located at one end inside the sleeve near the reflective strips;

[0009] A cylinder is located at the upper end of the sleeve. The output end of the cylinder is fixedly connected to the hammer rod. A cylinder control cabinet is installed outside the cylinder.

[0010] The control board, located inside the cylinder control cabinet, can calculate the hammer displacement and set the shelling depth in real time through the cylinder control cabinet.

[0011] Preferably, the reflective strips are installed at equal intervals on the outside of the hammer rod, with the upper part of the reflective strips spaced 1cm apart and the lower part spaced 10cm apart.

[0012] Preferably, the cylinder control cabinet can output a control signal for the operation of the cylinder solenoid valve. When the solenoid valve opens the upper chamber of the cylinder to allow air in, it pushes the piston downward and causes the hammer head to move downward. When the solenoid valve closes the lower chamber of the cylinder to allow air in, it pushes the piston upward and causes the hammer head to move upward.

[0013] Preferably, as the hammer moves up and down, the photoelectric switch will open when it encounters the reflective strip and close when it does not. The cylinder control cabinet can receive the reflective and non-reflective signals returned by the photoelectric switch and calculate the hammer displacement based on the changing patterns of the reflective and non-reflective signals.

[0014] Preferably, the cylinder control cabinet can measure the number and duration of reflections and non-reflections, and encode the reflections and non-reflections. As the hammer descends, the number of reflections corresponds to the hammer displacement, and the ratio of reflection to non-reflection duration corresponds to whether the hammer is on top or bottom. When the hammer is on top, the ratio of reflection duration to non-reflection duration is close to 1:9, and when the hammer is on bottom, the ratio of reflection duration to non-reflection duration is close to 1:1.

[0015] Preferably, the cylinder control cabinet is equipped with a human-machine interactive touch screen. The operator can set the shell-breaking depth on the touch screen. When the cylinder control cabinet receives a shell-breaking command issued manually or triggered by a timer, it starts to send a shell-breaking signal to control the solenoid valve to open and the hammer head to move downward. When the hammer head displacement is detected to exceed the set depth, a hammer head return signal is immediately given, the solenoid valve closes, and the hammer head returns.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a non-contact real-time displacement sensor, which has the following advantages:

[0018] This invention achieves non-contact, precise detection of hammer displacement by installing a reflective strip on the upper part of the hammer rod and cooperating with a photoelectric switch on the outside of the sleeve. The cylinder drives the hammer rod to move, and the control board receives the high and low level signals from the photoelectric switch to accurately calculate the hammer head's stroke and real-time position. This not only improves the accuracy and environmental adaptability of displacement detection but also avoids the problem of easy wear of traditional contact sensors, extends service life, reduces maintenance costs, and provides a strong guarantee for the efficient operation of industrial automation equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0021] In the diagram: 1. Sleeve; 2. Hammer rod; 3. Reflective strip; 4. Photoelectric switch; 5. Cylinder. Detailed Implementation

[0022] 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.

[0023] This utility model provides a technical solution: a non-contact real-time displacement sensor. Please refer to [link / reference]. Figure 1 , Figure 2 ,include:

[0024] Sleeve 1 and hammer rod 2, reflective strips 3 are installed at equal intervals on the upper part of hammer rod 2, photoelectric switch 4 is installed on the outer side of sleeve 1, one end of photoelectric switch 4 penetrates and extends into the interior of sleeve 1, and the photoelectric switch 4 is located inside sleeve 1 near reflective strip 3.

[0025] Cylinder 5 is located at the upper end of sleeve 1. The output end of cylinder 5 is fixedly connected to hammer rod 2. A cylinder control cabinet is installed outside cylinder 5.

[0026] The control board, located inside the cylinder control cabinet, can calculate the hammer displacement and set the shelling depth in real time through the cylinder control cabinet.

[0027] The reflective strips 3 are installed at equal intervals on the outside of the hammer rod 2. The upper part of the reflective strips 3 is spaced 1cm apart, and the lower part is spaced 10cm apart.

[0028] The cylinder control cabinet can output control signals for the operation of the cylinder solenoid valve. When the solenoid valve opens the upper chamber of cylinder 5, it pushes the piston downward and causes the hammer head to move downward. When the solenoid valve closes the lower chamber of cylinder 5, it pushes the piston upward and causes the hammer head to move upward.

[0029] As the hammer moves up and down, the photoelectric switch 4 will open when it encounters the reflective strip 3 and close when it does not. The cylinder control cabinet can receive the reflective and non-reflective signals returned by the photoelectric switch 4 and calculate the hammer displacement based on the changing patterns of the reflective and non-reflective signals.

[0030] This solution can calculate the hammer displacement in real time through the cylinder control cabinet and calculate the hammer displacement based on the change law of the reflective signal. Specifically, the cylinder control cabinet can measure the number and duration of reflective and non-reflective events, and encode them by reflective and non-reflective events. As the hammer descends, the number of reflective events corresponds to the hammer displacement, and the ratio of reflective and non-reflective event durations corresponds to whether the hammer is on top or bottom. When the hammer is on top, the ratio of reflective event duration to non-reflective event duration is close to 1:9, and when the hammer is on bottom, the ratio of reflective event duration to non-reflective event duration is close to 1:1.

[0031] The cylinder control cabinet is equipped with a human-machine interactive touch screen. The operator can set the shell-breaking depth on the touch screen. When the cylinder control cabinet receives a shell-breaking command issued manually or triggered by a timer, it starts to send a shell-breaking signal to control the solenoid valve to open and the hammer head to move downward. When the hammer head displacement exceeds the set depth, it immediately sends a hammer head return signal, the solenoid valve closes, and the hammer head returns.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-contact real-time displacement sensor, characterized in that, include: A sleeve (1) and a hammer rod (2), wherein reflective strips (3) are installed at equal intervals on the upper part of the hammer rod (2), and a photoelectric switch (4) is installed on the outer side of the sleeve (1). One end of the photoelectric switch (4) penetrates and extends into the interior of the sleeve (1), and the photoelectric switch (4) is located inside the sleeve (1) near the reflective strips (3). A cylinder (5) is located at the upper end of the sleeve (1). The output end of the cylinder (5) is fixedly connected to the hammer rod (2). A cylinder control cabinet is provided outside the cylinder (5). The control panel is located inside the cylinder control cabinet.

2. A non-contact real-time displacement sensor according to claim 1, wherein: The reflective strips (3) are installed at equal intervals on the outside of the hammer rod (2). The upper part of the reflective strips (3) is spaced 1 cm apart, and the lower part is spaced 10 cm apart.

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