A detachable mounting structure of a high-pressure-resistant proximity switch for a hydraulic cylinder

Abstract

The utility model relates to the technical field of hydraulic transmission, especially relates to detachable mounting structure of high pressure -resisting proximity switch for hydraulic oil cylinder, include: oil cylinder body, one side sets up mounting hole, assembles the sleeve, installs in mounting hole, the center sets up through -hole, one side sets up the locating step along the through -hole axial direction, and the one end of assembling the sleeve extends and forms the fixed base along the circumference, proximity switch, extends into the through -hole, and contacts the locating step, the utility model discloses a larger size, precision is lower's mounting hole on the processing of oil cylinder body, has reduced the processing difficulty and precision requirement of oil cylinder body, through setting up simple assembling the sleeve and installing in mounting hole, has reduced the possibility of overall scrapping due to local processing or installation problem, when maintaining proximity switch, only needs to remove or replace assembling the sleeve, and the operation is more convenient, and the maintenance cost is low.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic transmission technology, and in particular to a detachable mounting structure for a high-pressure resistant proximity switch for hydraulic cylinders. Background Technology

[0002] Hydraulic cylinders are the core actuators in hydraulic transmission systems, used to convert hydraulic energy into mechanical energy to achieve linear or reciprocating motion. High-pressure proximity switches are sensors used to detect the piston position of hydraulic cylinders. They can operate stably in high-pressure hydraulic environments, ensuring the accuracy of system control. They need to be correctly installed on the cylinder to guarantee proper positioning, sealing, and maintainability.

[0003] Currently, the common method for installing high-pressure proximity switches on hydraulic cylinders is to directly machine a precision cavity, such as an end cap or cylinder body, into the cylinder body to accommodate the proximity switch. The cavity needs to maintain precise relative position and dimensional tolerances with the oil passages and sealing structures inside the cylinder. The machining process requires high-precision operation of the entire cylinder body. Since the cylinder body is usually a large and complex welded or forged part, directly machining the precision cavity places extremely high demands on the machine tools and operators, making the machining process very difficult. Once deviations or damage occur during the machining process, it often leads to the scrapping of the entire cylinder body parts, resulting in huge material waste and economic losses.

[0004] Therefore, there is a need for a detachable mounting structure for a high-pressure resistant proximity switch for hydraulic cylinders to optimize the installation and maintenance of the proximity switch.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] This utility model provides a detachable mounting structure for a high-pressure resistant proximity switch for hydraulic cylinders. By adding an independent mounting kit as an intermediate connector to connect the proximity switch and the cylinder body, the machining difficulty and precision of the cylinder body are reduced, making the maintenance of the proximity switch more convenient.

[0007] This utility model provides a detachable mounting structure for a high-pressure resistant proximity switch for hydraulic cylinders, including: The cylinder body has a mounting hole on one side; The assembly is installed in the mounting hole, with a through hole in the center and a positioning step along the axial direction of the through hole on one side. One end of the assembly extends circumferentially to form a fixing seat. The proximity switch extends into the through hole and contacts the positioning step.

[0008] Furthermore, a first sealing ring is provided on the side of the assembly near the mounting hole, and the first sealing ring abuts against the inner wall of the through hole.

[0009] Furthermore, the assembly has a first sealing groove on the side near the mounting hole, and the first sealing ring is disposed in the first sealing groove.

[0010] Furthermore, a second sealing ring is provided between the proximity switch and the positioning step.

[0011] Furthermore, it also includes a protective sleeve, which is disposed at the end of the assembly that is away from the cylinder body and is fitted onto the proximity switch.

[0012] Furthermore, fixing holes are provided on the mounting kit and the protective sleeve, and fixing members are provided in the fixing holes, with the fixing members extending into the cylinder body.

[0013] Furthermore, multiple fixing holes are evenly spaced along the circumference of the fixing seat, and the fixing member is provided corresponding to the fixing holes.

[0014] Furthermore, a third sealing ring is provided between the assembly and the protective sleeve.

[0015] Furthermore, a second sealing groove is formed on the side of the protective sleeve facing the assembly, and the third sealing ring is disposed in the second sealing groove.

[0016] The following technical effects can be achieved through the technical solution of this utility model: By adding an independent assembly as an intermediate connector to connect the proximity switch and the cylinder body, the machining difficulty and precision of the cylinder body are reduced. Precision issues arising from machining or use are transferred to the replacement of the assembly, reducing the overall scrap rate and cost. This facilitates the daily maintenance and replacement of the proximity switch. Moreover, the through holes of the assembly corresponding to the proximity switch are easier to machine, ensuring the installation accuracy and detection reliability of the proximity switch. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the detachable mounting structure of the high-pressure resistant proximity switch for hydraulic cylinders in this embodiment of the present invention. Figure 2This is an enlarged view of the mounting holes of a portion of the cylinder body in an embodiment of this utility model; Figure 3 This is a schematic diagram of the detachable installation structure in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the assembly structure in an embodiment of the present utility model; Figure 5 This is a structural schematic diagram of the equipment from another perspective in an embodiment of this utility model; Figure 6 This is a side view of the detachable mounting structure in an embodiment of the present utility model; Figure 7 for Figure 6 Sectional view at point AA; Figure 8 This is an exploded view of the detachable installation structure in an embodiment of this utility model.

[0019] Reference numerals in the attached drawings: 1. Cylinder body; 11. Mounting hole; 2. Assembly piece; 21. Through hole; 22. Positioning step; 23. Fixing seat; 24. First sealing ring; 25. First sealing groove; 3. Proximity switch; 4. Second sealing ring; 5. Protective sleeve; 51. Third sealing ring; 52. Second sealing groove; 6. Fixing hole; 61. Fixing component. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] This utility model provides a detachable mounting structure for a high-pressure resistant proximity switch for hydraulic cylinders, including: The cylinder body 1 has a mounting hole 11 on one side; Mounting accessory 2 is installed in mounting hole 11, with a through hole 21 in the center and a positioning step 22 along the axial direction of the through hole 21 on one side. One end of mounting accessory 2 extends circumferentially to form a fixing seat 23. The proximity switch 3 extends into the through hole 21 and contacts the positioning step 22.

[0023] On the hydraulic cylinder body 1, such as the end cap or cylinder body, a basic hole needs to be provided for the installation of the proximity switch 3. A basic mounting hole 11 with relatively low precision requirements is machined on the cylinder body 1. The dimensional tolerance can be relaxed and the machining requirements can be appropriately reduced to avoid the risk of the cylinder body 1 being scrapped due to precision issues. This greatly reduces the machining difficulty and facilitates the subsequent installation of the accessory 2.

[0024] The mounting assembly 2 can be made of high-strength, corrosion-resistant materials, such as stainless steel or alloy steel, according to the anti-corrosion and strength requirements of different projects. The shape of the mounting assembly 2 matches the mounting hole 11. It can be a conventional cylindrical shape. Preferably, external threads can be provided on the surface of the mounting assembly 2 so as to fix it by means of threaded connection. The specifications of the mounting assembly 2 can be set according to different models of hydraulic cylinder body 1 and proximity switch 3, so that the application scenarios are more extensive.

[0025] During assembly, the high-pressure resistant proximity switch 3 is first installed into the through hole 21 of the assembly 2 according to the specified torque and sealing requirements, until the proximity switch 3 abuts against the positioning step 22 inside the assembly 2. At this time, it is necessary to ensure the sealing between the proximity switch 3 and the assembly 2 to avoid leakage or other installation defects. A sealing ring or an appropriate amount of sealant can be used. Then, the assembled assembly 2 and proximity switch 3 are screwed into the mounting hole 11 of the hydraulic cylinder body 1 through a threaded or flanged connection, and it is ensured that they are tightened according to the specified torque. Then, the assembly 2 and the cylinder body 1 are further fixedly connected by the fixing seat 23. In the later maintenance process, the proximity switch 3 or assembly 2 can be quickly replaced and repaired, reducing downtime and maintenance costs.

[0026] In some embodiments of this utility model, a first sealing ring 24 is provided on the side of the assembly 2 near the mounting hole 11, and the first sealing ring 24 abuts against the inner wall of the through hole 21.

[0027] The first sealing ring 24 should be made of a material with high pressure resistance and corrosion resistance, such as rubber, fluororubber, or polytetrafluoroethylene, to ensure a good sealing effect. The size and shape of the first sealing ring 24 correspond to the contact surfaces of the fitting 2 and the mounting hole 11. When installing the sealing ring, first install the first sealing ring 24 on the side of the fitting 2 closest to the mounting hole 11 to ensure that the first sealing ring 24 is undamaged. Then install the fitting 2 into the mounting hole 11 of the hydraulic cylinder body 1 in the prescribed manner so that the first sealing ring 24 tightly abuts against the inner wall of the through hole 21, thereby achieving a sealing effect and preventing leakage caused by excessive pressure or mechanical friction caused by the proximity switch 3.

[0028] Based on the above embodiments, a first sealing groove 25 is opened on the side of the assembly 2 near the mounting hole 11, and a first sealing ring 24 is disposed in the first sealing groove 25. The first sealing groove 25 has an appropriate depth and width, which firmly fixes the first sealing ring 24 in the assembly 2, enhances the stability of the first sealing ring 24, prevents the first sealing ring 24 from shifting or deforming during installation, and significantly improves the sealing performance between the assembly 2 and the hydraulic cylinder body 1.

[0029] In some embodiments of this utility model, a second sealing ring 4 is provided between the proximity switch 3 and the positioning step 22 to effectively isolate the liquid contact surface between the proximity switch 3 and the mounting kit 2, ensuring that liquid leakage will not occur due to pressure fluctuations or temperature changes during the operation of the hydraulic cylinder, thereby improving the overall sealing performance.

[0030] In some embodiments of this utility model, a protective sleeve 5 is also included, disposed at the end of the assembly 2 away from the cylinder body 1, and sleeved on the proximity switch 3. The length of the protective sleeve 5 covers the main outer shell of the proximity switch 3, and the protective sleeve 5 has an opening inside to install the proximity switch 3 inside, without affecting the normal operation of the proximity switch 3, effectively extending the service life of the proximity switch 3.

[0031] Based on the above embodiments, fixing holes 6 are correspondingly provided on the mounting kit 2 and the protective sleeve 5. A fixing member 61 is installed in the fixing hole 6, and the fixing member 61 extends into the cylinder body 1. The fixing hole 6 meets the installation requirements of the proximity switch 3 and its protective sleeve 5. A circular hole can be selected, with its inner diameter matching the outer diameter of the fixing member 61. By selecting a fixing hole 6 of appropriate size and position, the fixing member 61 can pass smoothly through the fixing hole 6 and fix the mounting kit 2 and the protective sleeve 5 to the cylinder body 1, preventing unstable fixation due to external force or vibration.

[0032] The fastener 61 can be a bolt, screw, pin or other suitable fastener, the specific form of which is selected according to the actual use and connection requirements. The fastener 61 is made of a material with good corrosion resistance and strength, such as stainless steel or high-strength alloy material, to ensure reliability in high-pressure and corrosive environments.

[0033] Based on the above embodiment, multiple fixing holes 6 are evenly spaced along the circumference of the fixing seat 23, and fixing members 61 are provided corresponding to the fixing holes 6. The evenly spaced fixing holes 6 and fixing members 61 can evenly distribute pressure when the mounting kit 2 and protective sleeve 5 are connected to the hydraulic cylinder body 1. Under working conditions such as high pressure, vibration and impact, it can effectively avoid excessive stress on a certain fixing point, thereby improving the stability and reliability of the entire connection structure.

[0034] In some embodiments of this utility model, a third sealing ring 51 is provided between the mounting kit 2 and the protective sleeve 5. The third sealing ring 51 fits the contact surface of the mounting kit 2 and the protective sleeve 5, which can prevent external seawater from seeping in, protect the sensor electronic compartment from corrosion and damage, significantly improve the sealing effect, and ensure the stable operation of the system.

[0035] Based on the above embodiment, a second sealing groove 52 is formed on the side of the protective sleeve 5 facing the mounting kit 2, and a third sealing ring 51 is disposed in the second sealing groove 52. The second sealing groove 52 provides a stable installation position for the third sealing ring 51, ensuring that the third sealing ring 51 can be evenly stressed for sealing and is not prone to displacement or deformation.

[0036] In some embodiments of this utility model, the cylinder body 1 includes the body of products such as engineering hydraulic cylinders, relays, and hydraulic gate openers, as well as the installation structure of other detection devices involved in these products, such as displacement sensors, pressure sensors, and temperature sensors. All of these can use the assembly 2 in the above embodiments to make similar settings and connections, forming an adaptive installation structure as the product changes.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A detachable mounting structure for a high-pressure resistant proximity switch for a hydraulic cylinder, characterized in that, include: The cylinder body (1) has a mounting hole (11) on one side; The mounting kit (2) is installed in the mounting hole (11), with a through hole (21) in the center and a positioning step (22) on one side along the axial direction of the through hole (21). One end of the mounting kit (2) extends circumferentially to form a fixing seat (23). The proximity switch (3) extends into the through hole (21) and contacts the positioning step (22).

2. The detachable mounting structure of the high-pressure resistant proximity switch (3) for hydraulic cylinders according to claim 1, characterized in that, The assembly (2) has a first sealing ring (24) on the side near the mounting hole (11), and the first sealing ring (24) abuts against the inner wall of the through hole (21).

3. The detachable mounting structure of the high-pressure resistant proximity switch (3) for hydraulic cylinders according to claim 2, characterized in that, The assembly (2) has a first sealing groove (25) on the side near the mounting hole (11), and the first sealing ring (24) is disposed in the first sealing groove (25).

4. The detachable mounting structure of the high-pressure resistant proximity switch (3) for hydraulic cylinders according to claim 1, characterized in that, A second sealing ring (4) is provided between the proximity switch (3) and the positioning step (22).

5. The detachable mounting structure of the high-pressure resistant proximity switch (3) for hydraulic cylinders according to claim 1, characterized in that, It also includes a protective sleeve (5), which is located at the end of the assembly (2) away from the cylinder body (1) and is fitted onto the proximity switch (3).

6. The detachable mounting structure of the high-pressure resistant proximity switch (3) for hydraulic cylinders according to claim 5, characterized in that, Fixing holes (6) are provided on the mounting (2) and the protective sleeve (5), and fixing members (61) are provided in the fixing holes (6), and the fixing members (61) extend into the cylinder body (1).

7. The detachable mounting structure of the high-pressure resistant proximity switch (3) for hydraulic cylinders according to claim 6, characterized in that, The fixing holes (6) are evenly spaced along the circumference of the fixing seat (23), and the fixing member (61) is provided corresponding to the fixing holes (6).

8. The detachable mounting structure of the high-pressure resistant proximity switch (3) for hydraulic cylinders according to claim 5, characterized in that, A third sealing ring (51) is provided between the assembly (2) and the protective sleeve (5).

9. The detachable mounting structure of the high-pressure resistant proximity switch (3) for hydraulic cylinders according to claim 8, characterized in that, The protective sleeve (5) has a second sealing groove (52) on the side facing the assembly (2), and the third sealing ring (51) is disposed in the second sealing groove (52).

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