A contamination-proof displacement sensor

Abstract

The utility model discloses a kind of anti-pollution displacement sensors, including connecting block, the side of the connecting block is provided with tension magnetic pole, the side edge of the connecting block is provided with outer shield, the outer wall of the tension magnetic pole is sleeved with magnetic head body, the outer wall of the magnetic head body is sleeved with magnetic head support, the side of the magnetic head support is fixedly connected with outgoing line support, the front end of the outgoing line support is fixedly connected with dismounting mechanism, the other side of the outgoing line support is fixedly connected with base, the outer wall of the base is detachably connected with mounting mechanism, the outer wall of the tension magnetic pole is sleeved with rubber shield, the dismounting mechanism of being set can make equipment can quickly complete the installation and disassembly of connecting line, effectively avoid the situation that connecting line and outgoing line support between falling loose occur;The mounting mechanism of being set can make equipment can be stably installed on hydraulic cylinder or other required position, enhance the overall stability and applicability of equipment, in addition, when installing, first snap ring is sleeved on the base outer sidewall.

Description

Technical Field

[0001] This utility model relates to the field of displacement sensor technology, specifically to a pollution-resistant displacement sensor. Background Technology

[0002] Currently, hydraulic cylinders with displacement sensors are widely used in various fields, bringing efficiency, intensification, and convenience to production and people's lives. Magnetostrictive displacement sensors are a common type of displacement sensor used in industrial production, offering advantages such as high accuracy, good stability, and long-distance measurement. The electronic head of this type of sensor is installed at the tail of the hydraulic cylinder and requires a protective cover to ensure it is not damaged and is waterproof, moisture-proof, and dustproof. Patent CN202860998U discloses a pollution-proof displacement sensor, including a displacement sensor housing fixedly connected to the hydraulic cylinder of a rolling mill AGC, a base disposed at the lower part of the displacement sensor housing, a magnetic head seat, a magnetic head, a magnetic scale, and a displacement sensor cable disposed in the displacement sensor cylinder body, a protective cylinder sleeve slidably connected to the displacement sensor housing, and a spring disposed in the displacement sensor housing and the protective cylinder sleeve. The feature is that a threaded vent hole is opened on the base, and this vent hole is connected to an external nitrogen pipeline.

[0003] In practical use, traditional anti-pollution displacement sensors have been found to be unable to meet the requirements of waterproofing and dustproofing, resulting in severe rusting, shortened service life, and poor fixation of the connecting wires, making them prone to detachment and loosening from the wire outlet bracket. Summary of the Invention

[0004] The purpose of this utility model is to provide a pollution-proof displacement sensor to solve the problem that, in actual use, common displacement sensors cannot meet the requirements of waterproof and dustproof, resulting in severe rusting, shortened service life, and poor fixing effect on the connecting wire, which makes it easy for the sensor to fall off and loosen from the wire outlet bracket.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pollution-proof displacement sensor, comprising a connecting block, a tension magnetic rod disposed on one side of the connecting block, an outer protective cover disposed on one side edge of the connecting block, a magnetic head body sleeved on the outer wall of the tension magnetic rod, a magnetic head bracket sleeved on the outer wall of the magnetic head body, a wire outlet bracket fixedly connected to one side of the magnetic head bracket, a disassembly and assembly mechanism fixedly connected to the front end of the wire outlet bracket, a base fixedly connected to the other side of the wire outlet bracket, an installation mechanism detachably connected to the outer wall of the base, and a rubber protective cover sleeved on the outer wall of the tension magnetic rod; The disassembly and assembly mechanism includes a fixed base, the rear end of which is fixedly connected to the front end of the cable outlet bracket. A sealing ring is provided on one side of the inner wall of the fixed base. A connecting tube is provided on the inner wall of the fixed base. A spring is sleeved on the outer wall of the fixed base. One end of the spring is in close contact with a slider. A sliding sleeve is fixedly connected to the outer wall of the slider. A limit ring is fixedly connected to one side of the outer wall of the fixed base. An internal thread is provided on the inner wall of the connecting tube. A fixing hole is provided on the outer wall of the fixed base. A ball is slidably connected to the inner wall of the fixing hole.

[0006] Preferably, one end of the tension magnetic rod is bolted to one side of the connecting block, and one side of the outer protective cover is fixed to one side edge of the connecting block.

[0007] Preferably, one side of the inner wall of the fixing seat is embedded and connected to the outer wall of the sealing ring, and the inner wall of the fixing seat is slidably connected to the outer wall of the connecting pipe.

[0008] Preferably, the sphere extends through the fixing hole to the outer wall of the connecting pipe.

[0009] Preferably, the mounting mechanism includes a retaining ring one, the inner wall of the retaining ring one being detachably connected to the outer wall of the base, the lower end of the retaining ring one having a through hole, the upper end of the retaining ring one having a retaining ring two, extension plates being fixedly connected to the top of both sides of the retaining ring one, a rotating block being rotatably connected to the inner wall of one end of the extension plate, a screw being fixedly connected to the upper end of the rotating block, a sleeve being threadedly connected to the outer wall of the screw, a rotating handle being welded to the upper end of the sleeve, and fixing ears being fixedly connected to the bottom of both sides of the retaining ring two.

[0010] Preferably, the lower end of the first retaining ring is connected through the outer wall of the through hole, and the upper end of the first retaining ring is in close contact with the lower end of the second retaining ring.

[0011] Preferably, the inner wall of the sleeve is provided with a threaded groove that matches the outer wall of the screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The designed disassembly and assembly mechanism allows for quick installation and removal of the connecting cable, effectively preventing the cable from becoming loose or detached from the cable outlet bracket. When installing the cable, it is inserted into the connecting tube and initially secured using the internal thread. Simultaneously, the slider, driven by a spring, pushes the sliding sleeve, causing the ball to pass through the fixing hole and secure the connecting tube, ensuring a stable connection. Disassembly is easy by simply reversing the operation, greatly improving maintenance efficiency and ease of use. Furthermore, the sealing ring in the disassembly and assembly mechanism effectively prevents dust and moisture from entering, further enhancing the equipment's anti-contamination capabilities. 2. The installation mechanism allows the equipment to be securely mounted on the hydraulic cylinder or other required locations, enhancing the overall stability and applicability of the equipment. During installation, the retaining ring is first placed on the outer wall of the base. By placing retaining ring two above retaining ring one, the fixing ear aligns with the extension plate. Then, rotating the handle drives the sleeve to rotate. Because the threaded groove on the inner wall of the sleeve matches the outer wall of the screw, the sleeve moves downwards along the screw, pushing the fixing ear and retaining ring two downwards, causing retaining ring one and retaining ring two to fit tightly together, firmly fixing the base within. This installation method is not only simple to operate but also provides reliable fixation, effectively preventing loosening or displacement of the equipment during use, thus ensuring the measurement accuracy and stability of the displacement sensor. Furthermore, the detachable design of the installation mechanism facilitates equipment maintenance and replacement, further improving the equipment's flexibility. Attached Figure Description

[0013] Figure 1 This is a side sectional view of the three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the disassembly and assembly mechanism of this utility model; Figure 3 This is a schematic diagram of the installation mechanism of this utility model; Figure 4 This is a three-dimensional structural diagram of the present invention.

[0014] In the diagram: 1. Connecting block; 2. Tension magnetic rod; 3. Outer cover; 4. Magnetic head body; 5. Magnetic head bracket; 6. Cable exit bracket; 7. Disassembly and assembly mechanism; 8. Base; 9. Installation mechanism; 10. Rubber cover; 71. Fixing seat; 72. Sealing ring; 73. Connecting pipe; 74. Spring; 75. Slider; 76. Sliding sleeve; 77. Limiting ring; 78. Internal thread; 79. Fixing hole; 710. Ball; 91. Snap ring one; 92. Through hole; 93. Snap ring two; 94. Extension plate; 95. Rotating block; 96. Screw; 97. Sleeve; 98. Rotating handle; 99. Fixing ear. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 and Figure 4This utility model provides a technical solution: a pollution-proof displacement sensor, including a connecting block 1, a tension magnetic rod 2 is provided on one side of the connecting block 1, an outer protective cover 3 is provided on one side edge of the connecting block 1, a magnetic head body 4 is sleeved on the outer wall of the tension magnetic rod 2, a magnetic head bracket 5 is sleeved on the outer wall of the magnetic head body 4, a wire outlet bracket 6 is fixedly connected to one side of the magnetic head bracket 5, a disassembly and assembly mechanism 7 is fixedly connected to the front end of the wire outlet bracket 6, a base 8 is fixedly connected to the other side of the wire outlet bracket 6, an installation mechanism 9 is detachably connected to the outer wall of the base 8, a rubber protective cover 10 is sleeved on the outer wall of the tension magnetic rod 2, one end of the tension magnetic rod 2 is bolted to one side of the connecting block 1, and one side of the outer protective cover 3 is fixedly connected to one side edge of the connecting block 1. A cylindrical tension magnetic rod 2 is vertically installed on the right side of the connecting block 1. An arc-shaped outer protective cover 3 is fixedly installed on the right edge of the connecting block 1. A magnetic head body 4 is sequentially fitted around the outside of the tension magnetic rod 2. The magnetic head body 4 is tightly fitted onto the outer wall of the tension magnetic rod 2. A magnetic head bracket 5 is fitted around the outside of the magnetic head body 4. A wire outlet bracket 6 is welded to the right side of the magnetic head bracket 5. The front end of the wire outlet bracket 6 is fixedly connected to a disassembly and assembly mechanism 7 for easy maintenance by bolts. A base 8 is firmly welded to the other side of the wire outlet bracket 6. An adjustable mounting mechanism 9 is connected to the periphery of the base 8 by a snap-fit ​​method. To enhance the protective performance, a rubber protective cover 10 is also fitted on the outer surface of the tension magnetic rod 2, which can effectively prevent dust and liquid from entering. The left end of the tension magnetic rod 2 is reliably connected to the right side of the connecting block 1 by threads, while the outer protective cover 3 is firmly connected to the right edge of the connecting block 1 by welding. This structural design not only ensures the measurement accuracy of the sensor, but also improves its protective performance and service life in harsh environments.

[0017] Please see Figure 2 To quickly disassemble or install the connecting wires inside the cable outlet bracket 6, the disassembly and assembly mechanism 7 includes a fixed base 71. The rear end of the fixed base 71 is fixedly connected to the front end of the cable outlet bracket 6. A sealing ring 72 is provided on one side of the inner wall of the fixed base 71. A connecting tube 73 is provided on the inner wall of the fixed base 71. A spring 74 is sleeved on the outer wall of the fixed base 71. One end of the spring 74 is tightly attached to a slider 75. A sliding sleeve 76 is fixedly connected to the outer wall of the slider 75. A limit ring 77 is fixedly connected to one side of the outer wall of the fixed base 71. An internal thread 78 is provided on the inner wall of the connecting tube 73. A fixing hole 79 is provided on the outer wall of the fixed base 71. A ball 710 is slidably connected to the inner wall of the fixing hole 79. One side of the inner wall of the fixed base 71 is embedded and connected to the outer wall of the sealing ring 72. The inner wall of the fixed base 71 is slidably connected to the outer wall of the connecting tube 73. The ball 710 extends to the outer wall of the connecting tube 73 through the fixing hole 79. To facilitate efficient and convenient disassembly and installation of the internal connecting wires of the cable outlet bracket 6, the fixing base 71 is made of high-strength material with reliable mechanical properties. The rear end of the fixing base 71 is firmly fixed to the front end of the cable outlet bracket 6 via welding or bolt connection, ensuring the stability of the overall structure. A sealing ring 72, made of oil-resistant rubber, is precisely installed on one side of the inner wall of the fixing base 71 to effectively prevent the intrusion of external dust and moisture. A connecting pipe 73 is also provided on the inner wall of the fixing base 71, and the two are connected by a sliding fit, ensuring assembly accuracy and facilitating maintenance. Furthermore, a high-strength spring 74 is sleeved on the outer wall of the fixing base 71, with one end of the spring 74 tightly fitted to the slider 75, providing the necessary preload force to the entire mechanism through elastic force. The outer wall of the slider 75... The fixed seat 71 is reliably fixed to the sliding sleeve 76 through machining to ensure stability during movement. A limit ring 77 is also welded to one side of the outer wall of the fixed seat 71 to control the movement stroke of the mechanism. The inner wall of the connecting tube 73 is machined with a precision internal thread 78 to facilitate connection with other components. The outer wall of the fixed seat 71 has multiple fixing holes 79. These holes are precision machined so that their inner walls form a sliding fit with the ball 710. Then, one side of the inner wall of the fixed seat 71 is embedded in the outer wall of the sealing ring 72, which ensures both sealing and easy replacement. The inner wall of the fixed seat 71 and the outer wall of the connecting tube 73 are slidably connected through precision machining to ensure smooth movement. The ball 710 extends to the outer wall of the connecting tube 73 through the fixing holes 79, which can achieve precise positioning and reliable fixation during operation.

[0018] Please see Figure 3 To quickly fix the first retaining ring 91 and the second retaining ring 93 onto the base 8, the mounting mechanism 9 includes the first retaining ring 91, the inner wall of the first retaining ring 91 is detachably connected to the outer wall of the base 8, the lower end of the first retaining ring 91 is provided with a through hole 92, the upper end of the first retaining ring 91 is provided with the second retaining ring 93, the top of both sides of the first retaining ring 91 are fixedly connected with extension plates 94, the inner wall of one end of the extension plate 94 is rotatably connected with a rotating block 95, the upper end of the rotating block 95 is fixedly connected with a screw 96, the outer wall of the screw 96 is threadedly connected with a sleeve 97, the upper end of the sleeve 97 is welded with a handle 98, the bottom of both sides of the second retaining ring 93 are fixedly connected with fixing ears 99, the lower end of the first retaining ring 91 is connected through the outer wall of the through hole 92, the upper end of the first retaining ring 91 is in close contact with the lower end of the second retaining ring 93, and the inner wall of the sleeve 97 is provided with a threaded groove that matches the outer wall of the screw 96. To efficiently and conveniently securely fix snap ring 1 91 and snap ring 2 93 to the base 8, the inner wall of snap ring 1 91 is detachably connected to the outer wall of the base 8 to ensure stable installation. A through hole 92 is provided at the lower end of snap ring 1 91, which facilitates installation and positioning and reduces overall weight. The upper end of snap ring 1 91 is designed as a connecting surface to snap ring 2 93. The two snap rings are stacked vertically to achieve a tight fit. Extension plates 94 are fixedly connected to the top of both sides of snap ring 1 91. These extension plates 94 serve as support structures, and their inner walls are rotatably connected to rotating block 95 via precision-machined bearings. A screw 96 is firmly welded to the upper end of rotating block 95. The screw 96 is made of high-quality... Made of steel with precision threads, the screw 96 has a perfectly matched threaded groove on its outer wall and the sleeve 97 has a perfectly matched threaded groove on its inner wall, forming a reliable threaded connection. The upper end of the sleeve 97 is fixed with a handle 98 by welding, which is convenient for the operator to apply force to rotate. At the same time, the bottom of the two sides of the retaining ring 93 is symmetrically provided with fixing ears 99. These fixing ears 99 correspond to the extension plate 94 of the retaining ring 91. During installation, the lower end of the retaining ring 91 is connected to the outer wall of the base 8 through the through hole 92. The upper end of the retaining ring 91 and the lower end of the retaining ring 93 are made to fit seamlessly through precision machined surface contact. The threaded groove on the inner wall of the sleeve 97 is perfectly matched with the thread on the outer wall of the screw 96, which ensures the smoothness and reliability of rotation adjustment and achieves a fast and stable assembly effect.

[0019] Working Principle: First, the entire displacement sensor is securely installed on the equipment or structure to be measured using the mounting mechanism 9. During operation, the inner wall of the retaining ring 91 is detachably connected to the outer wall of the base 8. After adjusting the position, the extension plate 94, rotating block 95, screw 96, sleeve 97, and handle 98 work together to rotate the handle 98, causing the sleeve 97 to rotate. Since the inner wall of the sleeve 97 has a threaded groove that matches the outer wall of the screw 96, as the sleeve 97 rotates, the screw 96 drives the rotating block 95 to rotate on the inner wall of the extension plate 94, thereby bringing the retaining ring 91 and retaining ring 93 closer together and tightly against the base 8, achieving a stable installation. At the same time, the fixing ears 99 on both sides of the bottom of the retaining ring 93 also play an auxiliary role in fixing and positioning. After installation, the displacement sensor starts to work. The tension magnetic rod 2 will produce a corresponding displacement change under the action of external force, and the magnetic head body 4 moves with the tension magnetic rod 2. The magnetic head bracket 5 slides inside, and its position change is converted into an electrical signal and transmitted through the connecting wire in the output bracket 6. During the transmission process, the disassembly and assembly mechanism 7 plays a key role. When it is necessary to disassemble or install the connecting wire in the output bracket 6, it can be achieved by operating the components in the disassembly and assembly mechanism 7. The sliding sleeve 76 drives the slider 75 to compress or release the spring 74, so that the connecting tube 73 is fixed or in contact with the inner wall of the fixed seat 71. At the same time, the ball 710 slides in the fixed hole 79 and plays a role in positioning and fixing. The sealing ring 72 can effectively prevent external dust and moisture from entering the interior of the output bracket 6, protecting the connecting wire from contamination and damage. In addition, the rubber cover 10 is fitted on the outer wall of the tension magnetic rod 2, which can further block the intrusion of dust and liquid, protect the tension magnetic rod 2 and the internal magnetic head body 4 and other components, and ensure that the displacement sensor can work normally in harsh environments, improving its service life and measurement accuracy. Then, the disassembly and assembly mechanism 7 allows for quick disassembly and installation of the connecting wires inside the cable outlet bracket 6. During operation, simply slide the sliding sleeve 76, which drives the slider 75 to move, thereby compressing or releasing the spring 74, allowing the connecting tube 73 to slide smoothly on the inner wall of the fixing seat 71. During this process, the ball 710 slides precisely within the fixing hole 79, serving to position and fix the connecting tube 73, ensuring stability during cable installation or disassembly. At the same time, the sealing ring 72 fits tightly against the inner wall of the fixing seat 71, effectively preventing external dust and moisture from entering the cable outlet bracket 6, thus avoiding contamination and damage to the connecting wires that could affect the normal operation of the displacement sensor. When it is necessary to replace or maintain the connecting wires, simply reverse the steps. This design makes the replacement and maintenance of the connecting wires very convenient, greatly improving work efficiency. Throughout the entire operation, the rubber cover 10 is always fitted on the outer wall of the tension magnetic rod 2, forming a reliable protective barrier that effectively prevents dust and liquid from entering the tension magnetic rod 2 and key components such as the internal magnetic head body 4. Even in harsh working environments, it ensures the normal operation of the displacement sensor and prevents measurement errors or malfunctions due to external contamination, thereby improving the service life and measurement accuracy of the displacement sensor and providing a strong guarantee for the stable operation of the equipment. The above is the working process of the entire device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pollution-resistant displacement sensor, comprising a connecting block (1), characterized in that: A tension magnetic rod (2) is provided on one side of the connecting block (1), and an outer protective cover (3) is provided on one side edge of the connecting block (1). A magnetic head body (4) is sleeved on the outer wall of the tension magnetic rod (2), and a magnetic head bracket (5) is sleeved on the outer wall of the magnetic head body (4). A wire outlet bracket (6) is fixedly connected to one side of the magnetic head bracket (5), and a disassembly and assembly mechanism (7) is fixedly connected to the front end of the wire outlet bracket (6). A base (8) is fixedly connected to the other side of the wire outlet bracket (6), and an installation mechanism (9) is detachably connected to the outer wall of the base (8). A rubber protective cover (10) is sleeved on the outer wall of the tension magnetic rod (2). The disassembly and assembly mechanism (7) includes a fixed seat (71), the rear end of which is fixedly connected to the front end of the cable outlet bracket (6). A sealing ring (72) is provided on one side of the inner wall of the fixed seat (71). A connecting pipe (73) is provided on the inner wall of the fixed seat (71). A spring (74) is sleeved on the outer wall of the fixed seat (71). One end of the spring (74) is tightly attached to a slider (75). A sliding sleeve (76) is fixedly connected to the outer wall of the slider (75). A limit ring (77) is fixedly connected to one side of the outer wall of the fixed seat (71). An internal thread (78) is provided on the inner wall of the connecting pipe (73). A fixing hole (79) is provided on the outer wall of the fixed seat (71). A ball (710) is slidably connected to the inner wall of the fixing hole (79).

2. The anti-pollution displacement sensor according to claim 1, characterized in that: One end of the tension magnetic rod (2) is bolted to one side of the connecting block (1), and one side of the outer cover (3) is fixed to one side edge of the connecting block (1).

3. The anti-pollution displacement sensor according to claim 1, characterized in that: The inner wall of the fixing seat (71) is embedded and connected to the outer wall of the sealing ring (72), and the inner wall of the fixing seat (71) is slidably connected to the outer wall of the connecting pipe (73).

4. A pollution-resistant displacement sensor according to claim 3, characterized in that: The sphere (710) extends through the fixing hole (79) to the outer wall of the connecting pipe (73).

5. A pollution-resistant displacement sensor according to claim 1, characterized in that: The installation mechanism (9) includes a retaining ring one (91), the inner side wall of the retaining ring one (91) is detachably connected to the outer side wall of the base (8), the lower end of the retaining ring one (91) is provided with a through hole (92), the upper end of the retaining ring one (91) is provided with a retaining ring two (93), the top of both sides of the retaining ring one (91) is fixedly connected with an extension plate (94), the inner wall of one end of the extension plate (94) is rotatably connected with a rotating block (95), the upper end of the rotating block (95) is fixedly connected with a screw (96), the outer wall of the screw (96) is threadedly connected with a sleeve (97), the upper end of the sleeve (97) is welded with a rotating handle (98), and the bottom of both sides of the retaining ring two (93) is fixedly connected with a fixing ear (99).

6. A pollution-resistant displacement sensor according to claim 5, characterized in that: The lower end of the first retaining ring (91) is connected through the outer wall of the through hole (92), and the upper end of the first retaining ring (91) is in close contact with the lower end of the second retaining ring (93).

7. A pollution-resistant displacement sensor according to claim 5, characterized in that: The inner wall of the sleeve (97) is provided with a threaded groove that matches the outer wall of the screw (96).

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