Magnetostrictive displacement telescopic sensor device

Abstract

The utility model discloses a magnetostrictive displacement telescopic sensor device, and relates to the magnetostrictive displacement sensor technology field, the magnetostrictive displacement telescopic sensor device comprises a magnetostrictive displacement sensor body, the magnetostrictive displacement sensor body comprises an electronic cabin, a screwed joint, an ear plate, a feeler lever and a sealing ring, one side of the electronic cabin is externally connected with the screwed joint, and the other side of the electronic cabin is externally connected with the ear plate. A lug plate is integrally fixed to the edge of the other side of the electronic bin, and a probe rod is externally connected to the rear end of the electronic bin. According to the magnetostrictive displacement sensor device provided by the invention, the lug plate is additionally arranged on the side surface of the electronic bin, when the electronic bin is inserted into the mounting groove in the side surface of the front end plate, the position of the lug plate is matched with the position of the counter bore in the side surface of the mounting groove, and the electronic bin is further fixed in the mounting groove through the screw; the magnetostrictive displacement sensor can be installed and fixed only through one screw, the operation is simple and convenient, the use of non-standard fasteners can be greatly reduced, and the assembly cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetostrictive displacement sensors, in particular to a magnetostrictive displacement telescopic sensor device. Background Art

[0002] The magnetostrictive displacement sensor uses internal non-contact measurement and control technology to accurately detect the absolute position of the active magnetic ring to measure the actual displacement value of the detected product. The high precision and high reliability of the sensor have been widely used in thousands of actual cases. Since the active magnetic ring used to determine the position has no direct contact with the sensitive element, the sensor can be used in extremely harsh industrial environments and is not easily affected by oil stains, solutions, dust or other pollution.

[0003] In the prior art, magnetostrictive displacement sensors are divided into two types according to the installation method: internal and external.

[0004] However, most external sensors are installed by clamps, fixtures and equipment, and the installation of sensors is also cumbersome. In addition, most clamps and fixtures are non-standard parts with high processing costs.

[0005] Therefore, in view of this, the shortcomings of the existing structure are studied and improved, and a magnetostrictive displacement telescopic sensor device is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a magnetostrictive displacement telescopic sensor device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetostrictive displacement telescopic sensor device, comprising a magnetostrictive displacement sensor body, wherein the magnetostrictive displacement sensor body comprises an electronic compartment, a threaded joint, an ear plate, a probe rod and a sealing ring, wherein one side of the electronic compartment is externally connected to a threaded joint, and an ear plate is integrally fixed to the edge of the other side of the electronic compartment, the rear end of the electronic compartment is externally connected to a probe rod, and a sealing ring is sleeved on the root of the probe rod.

[0008] Furthermore, the magnetostrictive displacement sensor body is plugged into the side of the slide rail, and a slider is slidably installed in the middle of the slide rail, and a magnetic steel is embedded in the slider.

[0009] Furthermore, end plates are fixed at both ends of the slide rail, and a mounting groove is provided on the side surface of the front end plate.

[0010] Furthermore, a stepped countersunk hole is provided on the side of the mounting groove, and the countersunk hole is fixed to the ear plate by screws.

[0011] Furthermore, a through hole is provided at the bottom end of the installation groove, and the through hole cooperates with a sealing ring to achieve sealing of the root of the probe rod.

[0012] Furthermore, a groove is formed through the side surface of the slide rail along the extension direction, and the front end of the groove is connected to the mounting groove through a through hole.

[0013] Furthermore, a plurality of ribs are fixed in the middle of the groove, and a horizontal guide hole is opened in the middle of the rib to match the clearance of the probe rod.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. When the utility model is in use, the magnetostrictive displacement sensor of the present application is installed with an ear plate on the side of the electronic compartment. When the ear plate is inserted into the mounting groove on the side of the front end plate, the position of the ear plate matches the position of the countersunk hole on the side of the mounting groove, and the electronic compartment is further fixed in the mounting groove by screws. The present application only needs one screw to realize the installation and fixation of the magnetostrictive displacement sensor, which is easy to operate and can greatly reduce the use of non-standard fasteners and reduce assembly costs.

[0016] 2. When the utility model is in use, when the probe rod at the rear end of the electronic warehouse passes through the through hole and extends into the strip groove, on the one hand, the sealing ring at the root of the probe rod cooperates with the through hole to achieve extrusion sealing, and on the other hand, by arranging ribs with horizontal guide holes in multiple places in the extension direction of the strip groove, while strengthening the structural strength of the slide rail, the installation position of the probe rod is always in a horizontal state, preventing errors in the measurement of the stroke due to the inclination of the probe rod. The present application transplants the magnetic ring that cooperates with the waveguide tube in the prior art into the interior of the slider, which is convenient for recording the stroke changes of the slider on the slide rail. At the same time, the magnetic steel has no contact with the probe rod, reducing friction loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the slide rail of the utility model;

[0019] Figure 3 The figure is a schematic diagram of the main structure of the magnetostrictive displacement sensor of the utility model.

[0020] In the figure: 1. magnetostrictive displacement sensor body; 101. electronic compartment; 102. threaded joint; 103. ear plate; 104. probe rod; 105. sealing ring; 2. slide rail; 3. slider; 4. magnet; 5. end plate; 6. mounting groove; 7. countersunk hole; 8. through hole; 9. strip groove; 10. rib; 11. horizontal guide hole. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] Embodiment 1

[0023] like Figures 1 to 3 As shown, a magnetostrictive displacement telescopic sensor device includes a magnetostrictive displacement sensor body 1, the magnetostrictive displacement sensor body 1 includes an electronic compartment 101, a threaded joint 102, an ear plate 103, a probe rod 104 and a sealing ring 105, one side of the electronic compartment 101 is externally connected with the threaded joint 102, and the edge of the other side of the electronic compartment 101 is integrally fixed with the ear plate 103, the rear end of the electronic compartment 101 is externally connected with the probe rod 104, and the root of the probe rod 104 is sleeved with a sealing ring 105;

[0024] Embodiment 2

[0025] like Figures 1 to 3 As shown, the magnetostrictive displacement sensor body 1 is plugged into the side of the slide rail 2, and a slider 3 is slidably installed in the middle of the slide rail 2, and a magnetic steel 4 is embedded in the slider 3, end plates 5 are fixed at both ends of the slide rail 2, and a mounting groove 6 is opened on the side of the front end plate 5, and a step-shaped countersunk hole 7 is opened on the side of the mounting groove 6, and the countersunk hole 7 is fixed to the ear plate 103 by screws. The magnetostrictive displacement sensor of the present application is installed by adding an ear plate 103 on the side of the electronic warehouse 101. When the ear plate 103 is inserted into the mounting groove 6 on the side of the front end plate 5, the position of the ear plate 103 is matched with the position of the countersunk hole 7 on the side of the mounting groove 6, and the electronic warehouse 101 is further fixed in the mounting groove 6 by screws. The present application only needs one screw to realize the installation and fixation of the magnetostrictive displacement sensor, which is easy to operate and can greatly reduce the use of non-standard fasteners, reduce assembly costs, and is safe. A through hole 8 is provided at the bottom of the mounting groove 6, and the through hole 8 cooperates with the sealing ring 105 to achieve sealing of the root of the probe rod 104. A strip groove 9 is provided along the extension direction of the side of the slide rail 2, and the front end of the strip groove 9 is connected with the mounting groove 6 through the through hole 8. Several ribs 10 are fixed in the middle of the strip groove 9, and a horizontal guide hole 11 that matches the clearance of the probe rod 104 is provided in the middle of the rib 10. When the probe rod 104 at the rear end of the electronic warehouse 101 passes through the through hole 8 and extends into the strip groove 9, on the one hand, the sealing ring 105 at the root of the probe rod 104 cooperates with the through hole 8 to achieve extrusion sealing. On the other hand, by arranging multiple ribs 10 with horizontal guide holes 11 in the extension direction of the strip groove 9, while strengthening the structural strength of the slide rail 2, the installation position of the probe rod 104 is always in a horizontal state, preventing the measurement of the stroke due to the inclination of the probe rod 104 from causing errors;

[0026] The following is a supplementary explanation of the working principle of the magnetostrictive displacement telescopic sensor of the present application: when the sensor is working, the pulse current generated by the hardware circuit module in the electronic compartment 101 propagates along the probe rod 104. When the pulse current flows through the waveguide wire position corresponding to the built-in magnet 4 in the slider 3, it is recorded as a "starting pulse". The circumferential magnetic field generated by the pulse current and the axial magnetic field generated by the magnet 4 synthesize a spiral magnetic field. Based on the Widmann effect of the magnetic material, the waveguide wire undergoes local instantaneous deformation and generates a torsion wave. After the torsion wave is generated, it propagates in two opposite directions at a certain speed. The torsion wave propagates to the waveguide wire covered by the detection coil. Due to the inverse effect of magnetostriction, the magnetic induction intensity in the waveguide wire changes. At this time, an induced voltage is generated at both ends of the detection coil, recorded as an "ending pulse". By calculating the time difference between the two, the displacement can be accurately measured.

[0027] In actual use, the magnetostrictive displacement sensor of the present application is installed with an ear plate 103 on the side of the electronic compartment 101. When the ear plate 103 is inserted into the mounting groove 6 on the side of the front end plate 5, the position of the ear plate 103 matches the position of the countersunk hole 7 on the side of the mounting groove 6, and the electronic compartment 101 is further fixed in the mounting groove 6 by screws. The present application only needs one screw to realize the installation and fixation of the magnetostrictive displacement sensor, which is easy to operate and can greatly reduce the use of non-standard fasteners and reduce assembly costs. In the process of the probe rod 104 at the rear end of the electronic compartment 101 passing through the through hole 8 and extending into the strip groove 9 On the one hand, the sealing ring 105 at the root of the probe rod 104 cooperates with the through hole 8 to achieve extrusion sealing. On the other hand, by arranging multiple ribs 10 with horizontal guide holes 11 in the extension direction of the groove 9, while strengthening the structural strength of the slide rail 2, the installation position of the probe rod 104 is always in a horizontal state to prevent errors in the measurement of the stroke due to the inclination of the probe rod 104. The present application transplants the magnetic ring that cooperates with the waveguide in the prior art into the inside of the slider 3, which is convenient for recording the stroke changes of the slider 3 on the slide rail 2. At the same time, the magnetic steel 4 has no contact with the probe rod 104, reducing friction loss.

[0028] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A magnetostrictive displacement telescopic sensor device, characterized in that: The invention comprises a magnetostrictive displacement sensor body (1), wherein the magnetostrictive displacement sensor body (1) comprises an electronic compartment (101), a threaded joint (102), an ear plate (103), a probe rod (104) and a sealing ring (105); one side of the electronic compartment (101) is externally connected to the threaded joint (102), and the other side edge of the electronic compartment (101) is integrally fixed with the ear plate (103); the rear end of the electronic compartment (101) is externally connected to the probe rod (104), and the root of the probe rod (104) is sleeved with a sealing ring (105).

2. A magnetostrictive displacement telescopic sensor device according to claim 1, characterized in that: The magnetostrictive displacement sensor body (1) is plugged into the side of the slide rail (2), a slide block (3) is slidably mounted in the middle of the slide rail (2), and a magnetic steel (4) is embedded in the interior of the slide rail (3).

3. The magnetostrictive displacement telescopic sensor device according to claim 2, characterized in that: End plates (5) are fixed at both ends of the slide rail (2), and a mounting groove (6) is provided on the side surface of the front end plate (5).

4. The magnetostrictive displacement telescopic sensor device according to claim 3, characterized in that: A step-shaped countersunk hole (7) is provided on the side of the installation groove (6), and the countersunk hole (7) is fixed to the ear plate (103) by means of screws.

5. The magnetostrictive displacement telescopic sensor device according to claim 3, characterized in that: A through hole (8) is provided at the bottom end of the installation groove (6), and the through hole (8) cooperates with the sealing ring (105) to achieve sealing of the root of the probe rod (104).

6. The magnetostrictive displacement telescopic sensor device according to claim 2, characterized in that: A strip groove (9) is provided on the side surface of the slide rail (2) along the extension direction, and the front end of the strip groove (9) is connected to the installation groove (6) through a through hole (8).

7. The magnetostrictive displacement telescopic sensor device according to claim 6, characterized in that: A plurality of ribs (10) are fixed in the middle of the groove (9), and a horizontal guide hole (11) is provided in the middle of the rib (10) to be gap-matched with the probe rod (104).

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