Piston rod displacement sensor fixing device

Abstract

The utility model discloses a piston rod displacement sensor fixing device, which comprises a displacement sensor, and is characterized by comprising a cylinder body, a piston rod, a magnetic ring and a sensor measuring rod, one end of the cylinder body is provided with a threaded hole, the displacement sensor is arranged on the cylinder body through the threaded hole, the sensor measuring rod is connected with the displacement sensor, and the piston rod is arranged on the cylinder body. The piston rod is arranged in the cylinder body, the magnetic ring is arranged on the piston rod, and the sensor measuring rod is arranged in the piston rod. According to the utility model, the problem of fixed installation of the built-in displacement sensor of the cylinder body is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a fixing device for a piston rod displacement sensor. Background Art

[0002] In modern industry, hydraulic cylinders, as key power actuators, are widely used in CNC machine tools, automated production lines, lifting equipment, construction machinery, and other applications. The displacement sensor for the hydraulic cylinder piston rod, the "eye" of this system, is an indispensable component for intelligent and automated production due to its high precision, high reliability, and powerful sensing capabilities. However, existing built-in piston rod displacement sensors are difficult to secure during installation.

[0003] Therefore, it is necessary to provide a piston rod displacement sensor fixing device to solve the above technical problems. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In order to solve the above technical problems, the present utility model provides the following technical solutions: a piston rod displacement sensor fixing device, including a displacement sensor, characterized in that it includes a cylinder body, a piston rod, a magnetic ring, and a sensor measuring rod, one end of the cylinder body is provided with a threaded hole, the displacement sensor is installed on the cylinder body through the threaded hole, the sensor measuring rod is connected to the sensor, the piston rod is arranged and installed in the cylinder body, the sensor measuring rod is connected to the piston, the magnetic ring is installed on the sensor measuring rod, and the sensor measuring rod is arranged inside the piston rod.

[0006] As a preferred solution of the piston rod displacement sensor fixing device of the present invention, the threaded hole is provided on the outer cylinder sleeve of the cylinder body.

[0007] As a preferred solution of the piston rod displacement sensor fixing device of the present invention, the displacement sensor is threadedly connected to the cylinder body.

[0008] As a preferred solution of the piston rod displacement sensor fixing device of the present invention, a mounting sealing ring is provided at the threaded connection between the displacement sensor and the cylinder body.

[0009] As a preferred solution of the piston rod displacement sensor fixing device of the present invention, a groove is provided on the piston, and a non-magnetic gasket is installed in the groove.

[0010] As a preferred solution of the piston rod displacement sensor fixing device of the present invention, the sensor measuring rod passes through the magnetic ring and is inserted into the hollow piston.

[0011] As a preferred solution of the fixing device for the piston rod displacement sensor of the present invention, the magnetic ring is concentric with the sensor measuring rod.

[0012] The beneficial effects of the present invention are as follows: by threading the displacement sensor with the cylinder body, it can be easily replaced when damaged; by machining a placement space for the magnetic ring and the non-magnetic gasket on the piston rod, the magnetic ring and the non-magnetic gasket are fixed by screws, and the sensor measuring rod is inserted through the magnetic ring into the inner cavity of the hollow piston. The sensor measuring rod can measure the position of the piston rod through the reciprocating motion of the piston rod. The present invention not only fixes the piston rod displacement sensor but also avoids the inconvenience of installing the displacement sensor on the piston rod, which is easy to cause damage and inaccurate measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0014] Figure 1 This is a schematic structural diagram of a fixing device for a piston rod displacement sensor according to an embodiment of the present invention;

[0015] Figure 2 This is an enlarged schematic diagram of the installation of the piston rod, magnetic ring and non-magnetic gasket of the piston rod displacement sensor fixing device according to an embodiment of the present invention.

[0016] Figure numerals: 100, displacement sensor; 101, cylinder body; 102, piston rod; 103, magnetic ring; 104, sensor rod; 105, threaded hole; 106, sealing ring; 107, non-magnetic gasket. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings in the specification. It is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without making any creative work should fall within the scope of protection of the present invention.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Example 1

[0021] Reference Figure 1-2A piston rod displacement sensor fixing device includes a displacement sensor 100, which is characterized by comprising a cylinder body 101, a piston rod 102, a magnetic ring 103, and a sensor measuring rod 104. A threaded hole 105 is provided at one end of the cylinder body 101. The displacement sensor 100 is mounted on the cylinder body 101 through the threaded hole 105. The sensor measuring rod 104 is connected to the displacement sensor 100. The piston rod 102 is arranged and installed in the cylinder body 101. The magnetic ring 103 is installed on the piston rod 102. The sensor measuring rod 104 is arranged inside the piston rod 102. Specifically, the threaded hole 105 is provided on the outer cylinder sleeve of the cylinder body 101. The displacement sensor 100 is threadedly connected to the cylinder body 101. In order to improve the sealing between the displacement sensor 100 and the cylinder body 101, a sealing ring 106 is provided at the threaded connection between the displacement sensor 100 and the cylinder body 101. Displacement sensor 100 is secured to cylinder body 101 via a threaded connection. Because piston rod 102 is located within cylinder body 101, a groove is provided in piston rod 102 to facilitate accurate positioning of piston rod 102 by displacement sensor 100. This groove provides space for magnetic ring 103 and non-magnetic gasket 107. These two elements are secured in place with screws. Magnetic ring 103 is typically made of high-performance permanent magnetic material, such as neodymium iron boron (NdFeB), to ensure a sufficiently strong and stable magnetic field. Magnetic ring 103 corresponds to the measurement range of displacement sensor 100. The function of magnetic ring 103 is as follows: Magnetic ring 103 is a permanent magnet mounted on piston rod 102. The magnetic field changes it generates are detected by magnetostrictive displacement sensor 100, thereby enabling displacement measurement. Non-magnetic gasket 107 is used to isolate the magnetic ring 103 from the piston rod 102, preventing direct contact between the magnetic ring 103 and the piston rod 102. This prevents the magnetic ring 103 from magnetizing the piston rod 102 and affecting measurement accuracy. Non-magnetic gasket 107 is typically installed between the magnetic ring 103 and the piston rod 102, ensuring a certain gap between them. Non-magnetic gasket 107 is typically made of non-magnetic materials such as stainless steel, plastic, or ceramic. The magnetic ring 103 mounted on the piston rod 102 moves with the piston, transmitting displacement information to the sensor through changes in the magnetic field.

[0022] During use, the magnetic ring and piston: Magnetic ring 103 is mounted on piston rod 102 and moves with the piston's movement. The magnetic field changes generated by magnetic ring 103 are detected by a sensor, enabling displacement measurement. A non-magnetic gasket and magnetic ring: A non-magnetic gasket 107 is installed between magnetic ring 103 and piston rod 102, isolating the magnetic ring 103 from the piston rod 102 and preventing magnetization by magnetic ring 103, thereby ensuring measurement accuracy. The piston and non-magnetic gasket: The piston, through the piston rod 102, drives magnetic ring 103 and non-magnetic gasket 107 together, forming a complete measurement system. When installing the magnetic ring, install it in the groove of piston rod 102, ensuring that the central axis of magnetic ring 103 and piston rod 102 are aligned. Non-magnetic gasket 107 is then used to secure magnetic ring 103 to piston rod 102, ensuring a certain gap between magnetic ring 103 and piston rod 102. When installing the non-magnetic gasket, place it 107 between the magnetic ring 103 and the piston rod 102, ensuring that the magnetic ring 103 does not directly contact the piston rod 102. Secure the magnetic ring 103 and non-magnetic gasket 107 to the piston rod 102 with screws. When installing the sensor, install the magnetostrictive displacement sensor 100 in the appropriate position of the hydraulic cylinder or pneumatic cylinder, ensuring that the sensor and the motion trajectory of the piston rod 102 are aligned. Insert the sensor rod 104 through the magnetic ring 103 and into the inner cavity of the hollow piston rod 102, with the magnetic ring 103 and the sensor rod 104 concentric.

[0023] In summary, threaded hole 105 is provided on cylinder body 101 to secure displacement sensor 100 to cylinder body 101. The magnetic ring 103, piston rod 102, and non-magnetic gasket 107 together form a complete measurement system, ensuring that the magnetostrictive displacement sensor can accurately and reliably measure the displacement of piston rod 102. This solves the problem of inconvenient installation, fixation, replacement, and maintenance of displacement sensor 100.

[0024] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who consult this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0025] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0026] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A piston rod displacement sensor fixing device, comprising a displacement sensor (100), characterized in that: The invention comprises a cylinder body (101), a piston rod (102), a magnetic ring (103), and a sensor measuring rod (104); one end of the cylinder body (101) is provided with a threaded hole (105); a displacement sensor (100) is mounted on the cylinder body (101) through the threaded hole (105); the sensor measuring rod (104) is connected to the displacement sensor (100); the piston rod (102) is arranged and mounted in the cylinder body (101); the magnetic ring (103) is mounted on the piston rod (102); and the sensor measuring rod (104) is arranged inside the piston rod (102).

2. The piston rod displacement sensor fixing device according to claim 1, characterized in that The threaded hole (105) is provided on the outer cylinder sleeve of the cylinder body (101).

3. The piston rod displacement sensor fixing device according to claim 2, characterized in that The displacement sensor (100) is threadedly connected to the cylinder body (101).

4. The piston rod displacement sensor fixing device according to claim 1, characterized in that A mounting seal ring (106) is provided at the threaded connection between the displacement sensor (100) and the cylinder body (101).

5. The piston rod displacement sensor fixing device according to claim 1, characterized in that The piston rod (102) is provided with a groove, and a non-magnetic gasket (107) and a magnetic ring (103) are installed in the groove.

6. The piston rod displacement sensor fixing device according to claim 2, characterized in that The sensor measuring rod (104) passes through the magnetic ring (103) and is inserted into the hollow piston rod (102).

7. The piston rod displacement sensor fixing device according to claim 1, characterized in that The magnetic ring (103) is concentric with the sensor measuring rod (104).

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