Detection device for piston magnetic ring and piston position detection switch in cylinder body

Abstract

The utility model discloses a detection device for a piston magnetic ring and a piston position detection switch in a cylinder body, which comprises a detection main body as a sensing element of the piston position detection switch; the detection fixing part is provided with a mounting part for fixing the detection main body and a belt-shaped structure extending out of the two sides of the mounting part, magnetic connecting pieces are fixed to the two ends, away from the mounting part, of the belt-shaped structure according to the peripheral size of the air cylinder body, and the detection main body is fixed outside a piston position detection switch of the air cylinder body to be detected through the two magnetic connecting pieces; and the detection of the piston magnetic ring and the piston position detection switch in the cylinder body is realized. According to the utility model, the piston position detection switch detects the reason that the signal judgment system does not receive the signal, and the cylinder body does not need to be maintained and detected after being disassembled by using the detection device, so that the debugging of the cylinder body and the complicated maintenance process of the piston position detection switch are avoided, and the detection and maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder detection, in particular to a detection device for a piston magnetic ring and a piston position detection switch in a cylinder body. Background Art

[0002] Cylinders are frequently used in modern automated control systems. They are pneumatic actuators that convert the pressure energy of compressed gas into mechanical energy in pneumatic transmission. They are connected to other mechanical structures through the linear motion of the piston rod to achieve mechanical movements such as flap door opening and closing and cutter up and down control. In automated control systems, a piston magnet is provided on the piston rod in the cylinder body, and the piston magnet moves synchronously with the piston rod. A piston position detection switch is usually installed outside the cylinder body to detect the position of the piston magnet, thereby feeding back the travel position of the piston rod so that the control system can perform the next action.

[0003] During use, the cylinder may not move into place due to factors such as piston position detection switch failure, insufficient air pressure, and poor cylinder movement. Maintenance personnel are required to investigate the cause and perform maintenance. During equipment maintenance and commissioning, it is sometimes necessary to manually give a magnetic switch signal when the cylinder is not actually in place, so as to complete the maintenance and commissioning of related equipment. In previous maintenance work, it was necessary to replace the piston position detection switch or force the cylinder piston to move to the extreme position to detect whether the function of the piston position detection switch was intact. The switch signal was manually given by connecting a short-circuit wire and forcing the program. This method is complex, has many restrictions, and is inefficient.

[0004] Furthermore, when the piston position detection switch or the piston magnetic ring is damaged, it is necessary to disassemble them separately and then detect them, and it is impossible to quickly detect and confirm the damaged parts. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, the purpose of the utility model is to provide a detection device for a piston magnetic ring and a piston position detection switch in a cylinder body.

[0006] The utility model solves the above problems through the following technical solutions:

[0007] A detection device for a piston magnetic ring and a piston position detection switch in a cylinder body, comprising:

[0008] The detection body serves as a sensing element for the piston position detection switch;

[0009] The detection fixing component comprises a mounting portion for fixing a detection body, and a strip structure extending from both sides of the mounting portion. Two ends of the strip structure away from the mounting portion are respectively fixed with magnetic connecting pieces according to the outer circumference size of the cylinder body. The detection body is fixed outside the piston position detection switch of the cylinder body to be detected by two magnetic connecting pieces, so as to realize the detection of the piston magnetic ring and the piston position detection switch in the cylinder body.

[0010] As a further improvement of the present invention, the detection body is a cylindrical permanent magnet, and the mounting portion is annular.

[0011] As a further improvement of the present invention, the inner diameter of the mounting portion is 1 mm smaller than the outer diameter of the cylindrical permanent magnet.

[0012] As a further improvement of the utility model, the two strip structures are connected by a magnetic connecting sheet to fix the detection body outside the piston position detection switch.

[0013] As a further improvement of the present invention, the strip structure away from the mounting portion is connected to a fixed position of the cylinder body to fix the detection body outside the piston position detection switch.

[0014] As a further improvement of the present invention, the magnetic connecting sheet is bonded to the belt-shaped structure.

[0015] As a further improvement of the present invention, the detection fixing component is made of PVC material, and the detection body and the detection fixing component are integrally formed.

[0016] As a further improvement of the present invention, the mounting portion of the detection fixing component is interference fit with the detection body.

[0017] As a further improvement of the present invention, the upper and lower ports of the mounting portion are both formed with inwardly protruding lips so that the detection body can be fixed by the upper and lower lips.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0019] The utility model fixes a detection body by a detection fixing component, uses a cylindrical permanent magnet as the detection body, adjusts the length of the strip structure of the detection fixing component so that the detection body is tightly connected to the position of the piston position detection switch, and judges whether the piston position detection switch detects a signal and whether the reason why the system does not receive the signal is that the piston magnetic ring or the piston position detection switch is damaged. When using the detection device, there is no need to disassemble the cylinder body for maintenance and detection, thus avoiding the complicated maintenance process of the cylinder body debugging and the piston position detection switch, and improving the efficiency of detection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural schematic diagram of the detection device of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the detection device of the utility model and the cylinder body;

[0022] Figure 3 This is a cross-sectional view of the installation of the detection device of the utility model and the cylinder body.

[0023] Reference numerals:

[0024] 1. Cylindrical permanent magnet; 2. Strip structure; 3. Magnetic connecting piece; 4. Cylinder body; 5. Piston rod; 6. Piston magnetic ring; 7. Piston position detection switch. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0026] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0030] The following will be combined Figure 1-3 , a detection device for a piston magnetic ring in a cylinder body and a piston position detection switch involved in an embodiment of the present application is described in detail. It is worth noting that the following embodiments are only used to explain the present application and do not constitute a limitation on the present application.

[0031] Example

[0032] Combined with Figure 1-3 As shown, a detection device for a piston magnetic ring and a piston position detection switch in a cylinder body comprises:

[0033] The detection body is a cylindrical permanent magnet 1 which serves as a sensing element of a piston position detection switch;

[0034] The detection fixing component comprises an annular mounting portion for fixing the detection subject, and a strip structure 2 extending from both sides of the annular mounting portion, magnetic connecting sheets are respectively fixed at both ends of the strip structure, and the two strip structures far away from the annular mounting portion are connected to fix the detection subject outside the piston position detection switch of the cylinder body to be detected, so as to complete the cylinder magnetic switch detection and related equipment maintenance operations.

[0035] Optionally, a magnetic connecting sheet 3 is fixed to one end of the belt structure away from the annular mounting portion, and the two belt structures are connected by the magnetic connecting sheet 3. In this embodiment, the magnetic connecting sheet is bonded and fixed to the belt structure, and the bonding position of the magnetic connecting sheet can be adjusted according to the size of the cylinder body.

[0036] Preferably, the detection fixing component is made of PVC material, which has a certain shrinkage, and the detection body and the detection fixing component are integrally formed, so that the annular mounting portion of the detection fixing component has a certain shrinkage amount to achieve interference fit with the cylindrical permanent magnet 1, thereby achieving installation of the cylindrical permanent magnet 1. In this embodiment, the inner diameter of the annular mounting portion is 1 mm smaller than the outer diameter of the cylindrical permanent magnet.

[0037] In an optional embodiment, the upper and lower ports of the annular mounting portion are both formed with inwardly protruding lips, so that the cylindrical permanent magnet can be fixed by the upper and lower lips.

[0038] In another optional embodiment, two strip structures away from the annular mounting portion are connected to the fixed position of the cylinder body to fix the detection body outside the piston position detection switch of the cylinder body to be detected, thereby realizing the piston position detection switch detection and related equipment maintenance work.

[0039] In a specific embodiment, during normal production, the outer diameter of the cylindrical permanent magnet of the detection device is 22 mm, the thickness is 15 mm, the inner diameter of the annular mounting portion is 21 mm, the inner diameter of the lower lip is 5 mm, and the inner diameter of the upper lip is 21 mm. Figure 2 , Figure 3 As shown, the piston rod 5 moves in the cylinder body 4. When it reaches the position, the piston position detection switch 7 detects the position of the piston magnetic ring 6 set at one end of the piston rod 5, and then transmits the signal to the system. But sometimes, no matter how the piston rod 5 moves in the cylinder body 4, the piston position detection switch 7 can never detect the signal. At this time, the maintenance personnel cannot quickly determine whether the fault occurs because the piston magnetic ring 6 is not in place or because the piston position detection switch 7 is damaged. If this happens, the detection device of the utility model can be fixed to the cylinder body 4. When the cylindrical permanent magnet 1 is close to the piston position detection switch 7, if the piston position detection switch 7 detects a signal, it can be determined that the fault occurs because the piston magnetic ring 6 is not in place. When the cylindrical permanent magnet 1 is close to the piston position detection switch 7, if the piston position detection switch 7 still does not detect a signal, it can be determined that the piston position detection switch 7 is damaged.

[0040] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A detection device for a piston magnetic ring and a piston position detection switch in a cylinder body, characterized in that: include: The detection body serves as a sensing element for the piston position detection switch; The detection fixing component comprises a mounting portion for fixing a detection body, and a strip structure extending from both sides of the mounting portion. Two ends of the strip structure away from the mounting portion are respectively fixed with magnetic connecting pieces according to the outer circumference size of the cylinder body. The detection body is fixed outside the piston position detection switch of the cylinder body to be detected by two magnetic connecting pieces, so as to realize the detection of the piston magnetic ring and the piston position detection switch in the cylinder body.

2. The detection device according to claim 1, characterized in that: The detection body is a cylindrical permanent magnet, and the mounting portion is annular.

3. The detection device according to claim 2, characterized in that: The inner diameter of the mounting portion is 1 mm smaller than the outer diameter of the cylindrical permanent magnet.

4. The detection device according to claim 1, characterized in that: The two strip-shaped structures are connected via a magnetic connecting sheet to fix the detection body outside the piston position detection switch.

5. The detection device according to claim 1, characterized in that: The strip structure away from the mounting portion is connected to a fixed position of the cylinder body to fix the detection body outside the piston position detection switch.

6. The detection device according to claim 1, characterized in that: The magnetic connecting sheet is bonded to the belt-shaped structure.

7. The detection device according to claim 1, characterized in that: The detection fixing component is made of PVC material, and the detection body and the detection fixing component are integrally formed.

8. The detection device according to claim 1, characterized in that: The mounting portion of the detection fixing component is interference-fitted with the detection body.

9. The detection device according to any one of claims 1 to 8, characterized in that: The upper and lower ports of the mounting portion are both formed with inwardly protruding lips so that the detection body can be fixed through the upper and lower lips.

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