Explosion-proof air cylinder

Abstract

The utility model discloses an explosion-proof air cylinder which comprises an installation plate, an air cylinder body and a detection assembly, the air cylinder body and the detection assembly are arranged on the installation plate, the detection assembly is used for detecting the in-place movement condition of the air cylinder, and the detection assembly comprises a detection piece, an optical fiber fixing plate, an upper limiting optical fiber detection head and a lower limiting optical fiber detection head. The detection piece is arranged on a piston rod of the air cylinder body, the optical fiber fixing plate is arranged on the mounting plate and faces the detection piece, and the upper limiting optical fiber detection head and the lower limiting optical fiber detection head are both arranged on the side, facing the detection piece, of the optical fiber fixing plate. The detection piece slides between the upper limiting optical fiber detection head and the lower limiting optical fiber detection head along with the piston rod of the air cylinder body, and the upper limiting optical fiber detection head and the lower limiting optical fiber detection head are both in signal connection with an external material conveying system. According to the utility model, by using the optical fiber sensor and the detection mechanism, the functions of the original magnetic switch are realized, and the material conveying system is more stable and safer in an explosion-proof environment.

Description

Technical Field

[0001] The utility model relates to an explosion-proof cylinder and belongs to the technical field of cylinders. Background Art

[0002] Explosion-proof cylinders are usually used for lifting materials in explosion-proof environments. In the automation industry, it is a common technology to use magnetic switches to determine whether the cylinder has moved into place and to control the corresponding solenoid valve to complete the switching action. However, magnetic switches are greatly affected by external magnetic field interference and are prone to misoperation. At the same time, magnetic switches are prone to failure in harsh environments such as high temperature and high humidity, which leads to poor stability and safety of the material conveying system. There is room for improvement. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the magnetic switch is greatly affected by the interference of the external magnetic field and is prone to misoperation. At the same time, the magnetic switch is prone to malfunction in harsh environments such as high temperature and high humidity, which leads to the problem of poor stability and safety of using explosion-proof cylinders as lifting parts of material conveying systems.

[0004] In order to solve the above technical problems, the utility model provides an explosion-proof cylinder, which realizes the functions of the original magnetic switch and can meet the requirements of an explosion-proof environment, making the material conveying system more stable and safer.

[0005] In order to achieve the above technical objectives and the above technical effects, this application is implemented through the following technical solutions:

[0006] A kind of explosion-proof cylinder comprises a mounting plate, a cylinder body and a detection component, wherein the cylinder body and the detection component are both arranged on the mounting plate, the detection component is used to detect the movement of the cylinder into position, and the detection component is connected to the signal of an external material conveying system; the detection component comprises a detection piece, an optical fiber fixing plate, an upper limit optical fiber detection head and a lower limit optical fiber detection head, the detection piece is arranged on the piston rod of the cylinder body, the optical fiber fixing plate is arranged on the mounting plate and is arranged toward the detection piece, the upper limit optical fiber detection head and the lower limit optical fiber detection head are arranged at an interval of upper and lower on the side of the optical fiber fixing plate facing the detection piece, the detection piece is slidably arranged between the upper limit optical fiber detection head and the lower limit optical fiber detection head along with the piston rod of the cylinder body, and the upper limit optical fiber detection head and the lower limit optical fiber detection head are both connected to the signal of the external material conveying system.

[0007] Preferably, the detection sheet is detachably arranged on the piston rod of the cylinder body.

[0008] Preferably, the optical fiber fixing plate is an "L"-shaped plate, and the bent portion at the bottom end of the optical fiber fixing plate is detachably connected to the mounting plate.

[0009] Furthermore, the upper surface of the mounting plate is provided with a plurality of positioning screw holes, the inner threads of the positioning screw holes are connected with positioning bolts, and the bottom bending portion of the optical fiber fixing plate is penetrated with a plurality of fixing holes adapted to the positioning screw holes, and the positioning bolts pass through the fixing holes.

[0010] The utility model provides an explosion-proof cylinder, which has the following advantages:

[0011] When the utility model is used, the optical fiber sensor and the detection mechanism are used to realize the functions of the original magnetic switch, and at the same time, the explosion-proof environment can be met, so that the material conveying system is more stable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an axial schematic diagram of the overall structure of an explosion-proof cylinder mainly embodied in the utility model;

[0013] Figure 2 This is a schematic diagram of an explosion-proof cylinder structure that is mainly embodied in the utility model;

[0014] In the figure:

[0015] 1-mounting plate; 2-cylinder body; 3-detection assembly; 31-detection sheet; 32-optical fiber fixing plate; 33-upper limit optical fiber detection head; 34-lower limit optical fiber detection head; 4-positioning plate; 5-positioning screw hole; 6-positioning bolt; 7-fixing hole. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present utility model.

[0017] Reference Figure 1 and Figure 2 An explosion-proof cylinder includes a mounting plate 1, a cylinder body 2 and a detection component 3. The cylinder body 2 and the detection component 3 are both mounted on the upper surface of the mounting plate 1. The detection component 3 is used to detect the movement of the cylinder. The detection component 3 is connected to the signal of the external material conveying system, and then the detection signal is transmitted to the system in real time to ensure the stable conveying of the material.

[0018] Reference Figure 1 and Figure 2In a further embodiment, the detection assembly 3 includes a detection piece 31, an optical fiber fixing plate 32, an upper limit optical fiber detection head 33 and a lower limit optical fiber detection head 34. The detection piece 31 is detachably mounted on the piston rod of the cylinder body 2 through the positioning plate 4. In this embodiment, the positioning plate 4 is an inverted "L" shape, and the top bent extension end of the positioning plate 4 is detachably mounted and fixed on the piston rod of the cylinder body 2 by bolts. The vertical end of the positioning plate 4 is arranged toward the mounting plate 1 and can slide up and down under the drive of the piston rod of the cylinder body 2. The detection piece 31 is welded and fixed to the top end surface of the vertical end of the positioning plate 4; the optical fiber fixing plate 32 is detachably mounted The upper limit optical fiber detection head 33 and the lower limit optical fiber detection head 34 are installed on the mounting plate 1 and facing the detection piece 31, and the upper limit optical fiber detection head 33 and the lower limit optical fiber detection head 34 are inserted and installed at intervals on the side of the optical fiber fixing plate 32 facing the detection piece 31. The detection piece 31 is slidably arranged between the upper limit optical fiber detection head 33 and the lower limit optical fiber detection head 34 along with the piston rod of the cylinder body 2. The upper limit optical fiber detection head 33 and the lower limit optical fiber detection head 34 are both connected to the external material conveying system signal. In this embodiment, the upper limit optical fiber detection head 33, the lower limit optical fiber detection head 34, the material conveying system and its signal transmission method are all existing technologies and will not be described in detail.

[0019] Reference Figure 1 and Figure 2 In a further embodiment, the optical fiber fixing plate 32 is an "L"-shaped plate, and the bent extension section at the bottom of the optical fiber fixing plate 32 is detachably connected to the mounting plate 1. In a feasible implementation manner, the optical fiber fixing plate 32 and the mounting plate 1 can be fixed by plugging or by bolt connection. In this embodiment, the optical fiber fixing plate 32 and the mounting plate 1 are preferably fixed by bolts.

[0020] Furthermore, a plurality of positioning screw holes 5 are provided on the upper surface of the mounting plate 1, and a positioning bolt 6 is connected to the inner thread of the positioning screw hole 5. A plurality of fixing holes 7 matching the positioning screw holes 5 are penetrated through the bent portion at the bottom of the optical fiber fixing plate 32, and the positioning bolt 6 passes through the fixing hole 7. When installing the optical fiber fixing plate 32, the fixing holes 7 on the optical fiber fixing plate 32 are first aligned with the positioning screw holes 5 on the mounting plate 1 in sequence, and then the positioning bolt 6 is threadedly connected through the fixing hole 7 into the positioning screw hole 5, thereby achieving the fixation of the optical fiber fixing plate 32 and the mounting plate 1.

[0021] The method of using the explosion-proof cylinder of the utility model is as follows:

[0022] When the cylinder moves upward, the detection piece 31 moves upward accordingly, and the detection piece 31 approaches the upper limit optical fiber detection head 33. The system receives an optical signal, which proves that the cylinder has reached the upper limit. When the cylinder moves downward, the detection piece 31 moves downward accordingly, and the detection piece 31 approaches the lower limit optical fiber detection head 34. The system receives an optical signal, which proves that the cylinder has reached the lower limit.

[0023] The above is only a preferred embodiment of the utility model, and is not any formal or substantial limitation of the utility model. It should be pointed out that ordinary technicians in this technical field can make some improvements and supplements without departing from the utility model, and these improvements and supplements should also be regarded as the protection scope of the utility model. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the utility model, which are all equivalent embodiments of the utility model; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. An explosion-proof cylinder, characterized in that: It comprises a mounting plate (1), a cylinder body (2) and a detection assembly (3), wherein the cylinder body (2) and the detection assembly (3) are both arranged on the mounting plate (1), the detection assembly (3) is used to detect the movement status of the cylinder, and the detection assembly (3) is connected to the signal of an external material conveying system; The detection assembly (3) comprises a detection piece (31), an optical fiber fixing plate (32), an upper limit optical fiber detection head (33) and a lower limit optical fiber detection head (34); the detection piece (31) is arranged on the piston rod of the cylinder body (2); the optical fiber fixing plate (32) is arranged on the mounting plate (1) and is arranged toward the detection piece (31); the upper limit optical fiber detection head (33) and the lower limit optical fiber detection head (34) are arranged at intervals on a side of the optical fiber fixing plate (32) facing the detection piece (31); the detection piece (31) is slidably arranged with the piston rod of the cylinder body (2) between the upper limit optical fiber detection head (33) and the lower limit optical fiber detection head (34); the upper limit optical fiber detection head (33) and the lower limit optical fiber detection head (34) are both connected to the external material conveying system signal.

2. An explosion-proof cylinder as claimed in claim 1, characterized in that: The detection sheet (31) is detachably arranged on the piston rod of the cylinder body (2).

3. An explosion-proof cylinder as claimed in claim 1, characterized in that: The optical fiber fixing plate (32) is an "L"-shaped plate, and the bent portion at the bottom end of the optical fiber fixing plate (32) is detachably connected to the mounting plate (1).

4. An explosion-proof cylinder as claimed in claim 3, characterized in that: The upper surface of the mounting plate (1) is provided with a plurality of positioning screw holes (5), the internal threads of the positioning screw holes (5) are connected with positioning bolts (6), the bottom bending portion of the optical fiber fixing plate (32) is provided with a plurality of fixing holes (7) that are compatible with the positioning screw holes (5), and the positioning bolts (6) are passed through the fixing holes (7).

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