Lightweight carbon fiber static magnetic grid sensor device

Abstract

The invention belongs to the technical field of displacement sensors, and particularly relates to a lightweight carbon fiber static magnetic grid sensor device which comprises a sleeve, a measuring rod assembly is slidably connected in the sleeve, a static magnetic grid ruler assembly is installed on the outer side of the sleeve, and the sleeve is installed on the outer side of an oil cylinder through a support assembly. The front end of the measuring rod assembly is fixedly installed on a piston rod hanging head of the oil cylinder through a front installation base, and when the piston rod hanging head of the oil cylinder stretches out, the measuring rod assembly is driven by the front installation base to slide forwards in the sleeve. The static magnetic railing ruler assembly generates induction signals according to displacement of the measuring rod assembly and displacement of a static magnetic railing source in the measuring rod assembly and outputs the induction signals outwards for further processing, the casing pipe and the measuring rod assembly are mainly made of carbon fiber composite materials, and compared with traditional stainless steel materials, the carbon fiber composite materials are light in weight and convenient to transport and install, and cost is low. And the measuring rod assembly made of the carbon fiber composite material is good in flexibility resistance, and the measuring rod assembly is not easy to bend after being pulled out of the sleeve, so that the measuring precision is high.

Description

Technical Field

[0001] This invention belongs to the field of displacement sensor technology, and particularly relates to a lightweight carbon fiber static magnetic grating sensor device. Background Technology

[0002] The existing static magnetic grating sensor devices are mainly made of stainless steel. Stainless steel is heavy, which is inconvenient to transport and install. In addition, stainless steel has poor flexibility. After the stainless steel measuring rod is pulled out of the sleeve, it is easy to bend under the action of gravity. The bent measuring rod will affect the measurement accuracy.

[0003] For example, patent application number CN202020973127.2 describes a magnetostrictive displacement sensor, which includes a clamping screw, an electronic compartment sleeve cap, a sensitive element assembly, an electronic compartment control chamber, a sealing ring, a retaining ring, a stainless steel measuring rod, and a movable magnetic ring. The outer periphery of the electronic compartment control chamber forms a clearance fit with the inner wall of the hydraulic cylinder. Two annular grooves are set outside the electronic compartment control chamber, and the hydraulic cylinder body is connected through the first annular groove with a threaded set screw to fix the sensor. However, the disadvantage of this technical solution is that the magnetostrictive displacement sensor uses a stainless steel measuring rod. Stainless steel is heavy, inconvenient to transport and install, and has poor flexibility, making it easy to bend and affecting the measurement accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a lightweight carbon fiber static magnetic grating sensor device to solve the problems in the prior art. The specific technical solution is as follows:

[0005] A lightweight carbon fiber static magnetic grating sensor device includes a sleeve, a measuring rod assembly slidably connected inside the sleeve, a static magnetic grating scale assembly installed on the outside of the sleeve, the sleeve being mounted on the outside of a hydraulic cylinder via a bracket assembly, and the front end of the measuring rod assembly being fixedly mounted to the piston rod of the hydraulic cylinder via a front mounting seat. The main materials of the sleeve and the measuring rod assembly are both carbon fiber composite materials.

[0006] Furthermore, the sleeve is equipped with a fully open proximity switch and a fully closed proximity switch.

[0007] Furthermore, the measuring rod assembly includes multiple carbon fiber tubes, with an aluminum tube inserted at the connection between two adjacent carbon fiber tubes. A measuring rod core is inserted inside the aluminum tube, and the ends of two adjacent carbon fiber tubes are fixed to the aluminum tube and the measuring rod core by locking screws.

[0008] Furthermore, the inner core of the measuring rod is rotatably connected to a front hook, which is fixedly installed to the piston rod of the hydraulic cylinder via a front mounting seat.

[0009] Furthermore, the static magnetic scale assembly includes a fixed plate and a movable plate. The fixed plate is fixed to the lower end of the sleeve, and the movable plate slides on the sliding column provided at the lower end of the sleeve. A scale is provided on the side of the sleeve. A support platform is provided between the fixed plate and the movable plate. The two ends of the support platform abut against the inner walls of the fixed plate and the movable plate, respectively. Static magnetic scales can be inserted into both the upper and lower sides of the support platform. Adjustment components are provided on both the fixed plate and the movable plate.

[0010] Furthermore, the adjustment assembly includes a snap-fit ​​plate with two slots. Two limiting posts are fixed on the fixed plate, and the two limiting posts slide in the two slots respectively. The two limiting posts are threadedly connected to two nuts respectively. A slider is slidably connected to the fixed plate. The side of the snap-fit ​​plate snaps into the side of the slider. A hexagonal knob is rotatably connected inside the slider. The hexagonal knob is fixedly connected to two plug rods. Both plug rods are slidably connected to a movable ring column. The movable ring column is rotatably connected to one end of each of the two rotating rods. The other ends of the two rotating rods rotate within the support platform.

[0011] Furthermore, the movable ring column is internally threaded with a screw rod, and a hexagonal knob one is fixed at the end of the screw rod. Hexagonal knob one is rotatably connected to hexagonal knob two. A hexagonal cylinder is slidably connected to the outside of hexagonal knob two. The slider is provided with a groove, and a magnet is fixed in the groove. The hexagonal cylinder made of metal is inserted into the groove and magnetically attracted and fixed to the magnet.

[0012] Furthermore, the support platform includes two left support platforms and two right support platforms. The two left support platforms are slidably connected to the two right support platforms respectively. A locking structure is provided at the slidable connection between the left and right support platforms. The screw includes a left screw and a right screw. The left screw and the right screw are slidably connected. The two left support platforms are equidistantly arranged on both sides of the left screw, and the two right support platforms are equidistantly arranged on both sides of the right screw. The left screw is rotatably connected to the movable ring column, and its two ends are rotatably connected to the two left support platforms respectively.

[0013] The locking structure includes a side rod, which is fixed on the left support platform. A second limiting post is fixed on the right support platform. The second limiting post slides inside the side rod, and a second nut is threadedly connected to the upper end of the second limiting post.

[0014] Furthermore, the support assembly includes a bent frame that wraps around the upper side of the sleeve. A base frame is provided at the lower end of the sleeve. The lower ends of two locking screws pass through the bent frame and the base frame and are threadedly fixed to the inner column. The inner column slides within the support frame, and a spring is provided between the inner column and the bottom of the support frame.

[0015] Furthermore, the support frame is fixedly connected to the upper strap, and the upper strap and the lower strap are fixed by locking screws. The hydraulic cylinder is fixed between the upper strap and the lower strap, and the ends of the upper strap and the lower strap are provided with reinforcing ribs.

[0016] Furthermore, a cleaning assembly is provided on the upper side of the sleeve. The cleaning assembly includes a bottom shell. One end of the bottom shell is fixedly connected to the front hook through a bracket plate, and the other end of the bottom shell is fixed to the cleaning bracket. An upper sliding cover is slidably connected to the bottom shell. One end of the upper sliding cover is fixed to the sleeve, and the other end of the upper sliding cover is slidably connected to an air intake valve column. The air intake valve column is provided with multiple elongated holes. A spring is provided between the end of the air intake valve column and the end of the upper sliding cover. Air outlet pipes are connected to both sides of the bottom shell, and the ends of the air outlet pipes are connected to telescopic elbows.

[0017] The cleaning bracket is slidably connected in a groove set on the outside of the sleeve. The cleaning bracket is rotatably connected to the upper roller brush. A gear is provided in the middle of the upper roller brush. The gear meshes with a rack for transmission. The rack is fixed at the upper end of the sleeve. The two ends of the upper roller brush mesh with two side roller brushes respectively through bevel gears. Both side roller brushes are rotatably connected to the cleaning bracket. Two air outlet pipes pass through the center of the two side roller brushes respectively.

[0018] The advantages of this invention are:

[0019] When the hydraulic cylinder is in operation, its piston rod head extends, driving the measuring rod assembly to slide forward within the sleeve via the front mounting seat. The static magnetic scale assembly generates an induction signal based on the displacement of the measuring rod assembly and its internal static magnetic grid source, which is then output for further processing. This allows the measurement to obtain the distance the piston rod head extends, offering the advantage of high measurement accuracy. The sleeve and measuring rod assembly are primarily made of carbon fiber composite material. Compared to traditional stainless steel, carbon fiber composite material is lightweight, facilitating transportation and installation. Furthermore, the carbon fiber composite measuring rod assembly exhibits good flexibility, preventing it from bending easily after being pulled out of the sleeve, thus ensuring high measurement accuracy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0022] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the overall structure of the present invention. Figure 3 ;

[0024] Figure 5 This is a schematic diagram of the overall structure of the present invention. Figure 4 ;

[0025] Figure 6 This is a schematic diagram of the measuring rod assembly structure of the present invention. Figure 1 ;

[0026] Figure 7 This is a schematic diagram of the measuring rod assembly structure of the present invention. Figure 2 ;

[0027] Figure 8 This is a schematic diagram of the support assembly structure of the present invention. Figure 1 ;

[0028] Figure 9 This is a schematic diagram of the support assembly structure of the present invention. Figure 2 ;

[0029] Figure 10 This is a schematic diagram of the static magnetic scale assembly structure of the present invention. Figure 1 ;

[0030] Figure 11 This is a schematic diagram of the static magnetic scale assembly structure of the present invention. Figure 2 ;

[0031] Figure 12 for Figure 11 Enlarged view of a section at point B in the middle;

[0032] Figure 13 This is a schematic diagram of the static magnetic scale assembly structure of the present invention. Figure 3 ;

[0033] Figure 14 for Figure 13 Enlarged view of a section at point C;

[0034] Figure 15 This is a schematic diagram of the static magnetic scale assembly structure of the present invention. Figure 4 ;

[0035] Figure 16 This is a schematic diagram of the cleaning component structure of the present invention. Figure 1 ;

[0036] Figure 17 for Figure 16 Enlarged view of a section at point D;

[0037] Figure 18 This is a schematic diagram of the cleaning component structure of the present invention. Figure 2 ;

[0038] Figure 19 for Figure 18 Enlarged view of a section at point E in the middle;

[0039] Figure 20 for Figure 18 Enlarged view of a section at point F in the middle;

[0040] Explanation of markings in the diagram:

[0041] 1. Hydraulic cylinder; 2. Sleeve; 3. Measuring rod assembly; 301. Carbon fiber tube; 302. Aluminum tube; 303. Measuring rod inner core; 304. Locking screw one; 305. Front hook; 4. Bracket assembly; 401. Bent frame; 402. Base frame; 403. Inner column; 404. Locking screw two; 405. Spring one; 406. Support frame; 407. Upper strap; 408. Lower strap; 409. Reinforcing rib; 410. Locking screw three; 5. Front mounting base; 6. Static magnetic scale assembly; 601. Fixed plate; 602. Moving plate; 603. Snap-fit ​​plate; 604. Limiting post; 605. Nut; 606. Slider; 607. Hexagonal knob one; 608. Left screw; 609. Moving ring post; 610. Rotating rod. Left support platform 611; Magnet 612; Hexagonal rotary drum 613; Hexagonal knob II 614; Connecting rod 615; Right support platform 616; Side rod 617; Limiting post II 618; Nut II 619; Right screw 620; Static magnetic scale 621; Fully open proximity switch 7; Fully closed proximity switch 8; Cleaning assembly 9; Bottom shell 901; Bracket plate 902; Upper sliding cover 903; Inlet valve column 904; Long slot 905; Spring II 906; Air outlet pipe 907; Telescopic elbow 908; Cleaning bracket 909; Side roller brush 910; Upper roller brush 911; Gear 912; Rack 913; Slide groove 10; Scale 11; Slide column 12. Detailed Implementation

[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Example 1

[0045] like Figures 1-20As shown, a lightweight carbon fiber static magnetic grating sensor device includes a sleeve 2, a measuring rod assembly 3 slidably connected inside the sleeve 2, a static magnetic grating scale assembly 6 installed on the outside of the sleeve 2, the sleeve 2 being installed on the outside of the cylinder 1 via a bracket assembly 4, and the front end of the measuring rod assembly 3 being fixedly installed to the piston rod head of the cylinder 1 via a front mounting seat 5. The main materials of the sleeve 2 and the measuring rod assembly 3 are both carbon fiber composite materials.

[0046] The working principle of the above technical solution is as follows: When the hydraulic cylinder 1 is in working condition, its piston rod head extends out and drives the measuring rod assembly 3 to slide forward in the sleeve 2 through the front mounting seat 5. The static magnetic scale assembly 6 will generate an induction signal based on the displacement of the measuring rod assembly 3 and its internal static magnetic grid source and output it to the outside for further processing, thereby obtaining the distance of the piston rod head of the hydraulic cylinder 1. The measurement accuracy is high. The main materials of the sleeve 2 and the measuring rod assembly 3 are carbon fiber composite materials.

[0047] The sleeve 2 and measuring rod assembly 3 of the traditional static magnetic grid sensor are mainly made of stainless steel. For the same size and specifications, the carbon fiber composite measuring rod assembly 3 weighs 0.4 times that of the stainless steel measuring rod assembly 3. The lightweight measuring rod assembly 3 has the advantages of convenient transportation and installation.

[0048] For measuring rod assemblies 3 of the same size and specifications, the stainless steel measuring rod assembly 3 has a deflection of 10mm, while the carbon fiber composite measuring rod assembly 3 has a deflection of 3mm. After the measuring rod is pulled out of the sleeve, the lightweight measuring rod assembly 3 is not easy to bend and has high measurement accuracy.

[0049] Carbon fiber components have much higher tensile strength and stiffness than stainless steel.

[0050] Carbon fiber composites typically exhibit a much longer fatigue life under repeated loading than most metals, including stainless steel. They also demonstrate greater resistance to the initiation and propagation of fatigue cracks.

[0051] Carbon fiber composites (especially unidirectional or specific layup designs) have a very low coefficient of thermal expansion, which can even be negative (along the fiber direction), much lower than that of stainless steel.

[0052] Carbon fiber composite materials can maintain excellent dimensional stability under varying temperature conditions, reducing thermal stress and helping to ensure the accuracy of sensors.

[0053] Carbon fiber itself is inert, and the corrosion resistance of its composites mainly depends on the matrix resin (such as epoxy resin). By selecting a suitable resin system, carbon fiber composites have excellent corrosion resistance in most environments (such as humidity, salt spray, and various chemicals), and will not rust. They are generally superior to stainless steel in terms of corrosion resistance requirements, and can be used in occasions that require long-term resistance to corrosion, thus reducing maintenance costs.

[0054] Example 2

[0055] like Figures 1-20 As shown, the sleeve 2 is equipped with a fully open proximity switch 7 and a fully closed proximity switch 8;

[0056] The working principle of the above technical solution is as follows: the fully open proximity switch 7 and the fully closed proximity switch 8 can detect the maximum extension distance and retraction distance of the measuring rod assembly 3 respectively, and control the hydraulic cylinder 1 to extend or retract excessively, so as to prevent the measuring rod assembly 3 from extending or retracting excessively and causing damage to the equipment.

[0057] Example 3

[0058] like Figures 1-10 As shown, the measuring rod assembly 3 includes multiple carbon fiber tubes 301, with an aluminum tube 302 inserted at the connection between two adjacent carbon fiber tubes 301. A measuring rod core 303 is inserted into the aluminum tube 302, and the ends of two adjacent carbon fiber tubes 301 are fixed to the aluminum tube 302 and the measuring rod core 303 by locking screws 304.

[0059] The end of the inner core 303 of the measuring rod is rotatably connected to a front hook 305, and the front hook 305 is fixedly installed to the piston rod head of the oil cylinder 1 through the front mounting seat 5.

[0060] The working principle of the above technical solution is as follows: by replacing the stainless steel structure with carbon fiber tube 301 made of carbon fiber composite material, the weight of the overall measuring rod assembly 3 is reduced.

[0061] The two adjacent carbon fiber tubes 301 are fixed to the aluminum tube 302 by locking screw 304. Locking screw 304 passes through carbon fiber tube 301, aluminum tube 302 and measuring rod inner core 303, and fastens carbon fiber tube 301, aluminum tube 302 and measuring rod inner core 303 together. There is no need to customize the length of carbon fiber tube 301. It can be spliced ​​according to the original factory stock length, which makes production convenient and quick.

[0062] The inner core 303 of the measuring rod is a single piece, which does not need to be cut off, making assembly simple while ensuring measurement accuracy.

[0063] Example 4

[0064] like Figures 1-20As shown, the static magnetic scale assembly 6 includes a fixed plate 601 and a movable plate 602. The fixed plate 601 is fixed to the lower end of the sleeve 2, and the movable plate 602 slides on the sliding post 12 provided at the lower end of the sleeve 2. A scale 11 is provided on the side of the sleeve 2. A support platform is provided between the fixed plate 601 and the movable plate 602. The two ends of the support platform abut against the inner walls of the fixed plate 601 and the movable plate 602 respectively. Static magnetic scales 621 can be inserted into both the upper and lower sides of the support platform. Adjustment components are provided on both the fixed plate 601 and the movable plate 602.

[0065] The two adjustment components have the same structure. On one side of the fixed plate 601, the adjustment component includes a snap-fit ​​plate 603 with two slots. The fixed plate 601 has two limiting posts 604 fixed on it. The two limiting posts 604 slide in the two slots respectively and are threadedly connected to two nuts 605 respectively. A slider 606 is slidably connected to the fixed plate 601. The side of the snap-fit ​​plate 603 snaps into the side of the slider 606. A hexagonal knob 614 is rotatably connected inside the slider 606. The hexagonal knob 614 is fixedly connected to two plug rods 615. Both plug rods 615 are slidably connected to a moving ring post 609. The moving ring post 609 is rotatably connected to one end of two rotating rods 610. The other ends of the two rotating rods 610 are rotatably connected within the support platform.

[0066] The movable ring column 609 is internally threaded with a screw rod, and a hexagonal knob 607 is fixed at the end of the screw rod. The hexagonal knob 607 is rotatably connected to the hexagonal knob 614. A hexagonal cylinder 613 is slidably connected to the outside of the hexagonal knob 614. The slider 606 is provided with a groove, and a magnet 612 is fixed in the groove. The metal hexagonal cylinder 613 is inserted into the groove and magnetically attracted to the magnet 612.

[0067] The working principle of the above technical solution is as follows: Rotate the two nuts 605, and the two nuts 605 will rotate with the two limit posts 604 respectively, so that the two nuts 605 move outward, and move the snap-fit ​​plate 603 away from the slider 606. The snap-fit ​​plate 603 separates from the slider 606, pulls the support platform downward, and drives the two sliders 606 to move downward in the fixed plate 601 and the moving plate 602 respectively. When the lower end of the support platform is lower than the lower edge of the fixed plate 601, the static magnetic scale 621 can be inserted into the lower end of the support platform.

[0068] Pull the hexagonal rotating cylinder 613 backward to separate it from the magnet 612. A portion of the hexagonal rotating cylinder 613 is fitted onto the second hexagonal knob 614, and the other portion is fitted onto the first hexagonal knob 607. Rotating the hexagonal rotating cylinder 613 180 degrees causes the first hexagonal knob 607 and the second hexagonal knob 614 to rotate 180 degrees simultaneously, causing the screw and support platform to rotate 180 degrees. This rotates the static magnetic scale 621 to its upper position, pushing the support platform upward and causing the two sliders 606 to move upward within the fixed plate 601 and the movable plate 602 respectively. This moves the static magnetic scale 621 upward, adjusting it to its optimal position. At the preset position of the distance measuring rod assembly 3, the moving locking plate 603 is moved so that the locking plate 603 and the slider 606 are re-engaged. The nut 605 is tightened so that the nut 605 is pressed against the locking plate 603 to prevent the locking plate 603 from moving at will, thereby fixing the position of the support platform and the static magnetic scale 621. The two ends of the static magnetic scale 621 abut against the fixed plate 601 and the moving plate 602 respectively, which can prevent the static magnetic scale 621 from sliding at will on the support platform. The slider 606 can be engaged at different positions on the locking plate 603, thereby changing the height of the support platform and the static magnetic scale 621, and thus adjusting the distance between the static magnetic scale 621 and the measuring rod assembly 3.

[0069] Example 5

[0070] like Figures 1-20 As shown, the support platform includes two left support platforms 611 and two right support platforms 616. The two left support platforms 611 are slidably connected to the two right support platforms 616 respectively. A locking structure is provided at the slidable connection between the left support platform 611 and the right support platform 616. The screw includes a left screw 608 and a right screw 620. The left screw 608 and the right screw 620 are slidably connected. The two left support platforms 611 are equidistantly arranged on both sides of the left screw 608, and the two right support platforms 616 are equidistantly arranged on both sides of the right screw 620. The left screw 608 is rotatably connected to the movable ring column 609, and its two ends are rotatably connected to the two left support platforms 611 respectively.

[0071] The locking structure includes a side rod 617, which is fixed on the left support platform 611. A second limit post 618 is fixed on the right support platform 616. The second limit post 618 slides inside the side rod 617. A second nut 619 is threadedly connected to the upper end of the second limit post 618.

[0072] The working principle of the above technical solution is as follows: The hexagonal rotating cylinder 613 is pushed towards the slider 606, causing the hexagonal rotating cylinder 613 to re-magnetically adhere to the magnet 612. The hexagonal rotating cylinder 613 separates from the hexagonal knob 607. Rotating the hexagonal knob 607 causes the left screw 608 to rotate. Because the hexagonal rotating cylinder 613 is partially engaged within the slider 606, the hexagonal rotating cylinder 613 prevents the hexagonal knob 614 from rotating, thus preventing the insertion rod 615 from rotating. The left screw 608... The screw rotates with the movable ring 609, causing the movable ring 609 to slide with the plug rod 615, which in turn causes the two rotating rods 610 to rotate, causing the two left support platforms 611 to move away from or towards each other, thereby changing the distance between the two left support platforms 611. The rotation of the left screw 608 causes the right screw 620 to rotate, and the two right support platforms 616 move away from or towards each other synchronously with the two left support platforms 611, thus adapting to static magnetic scales 621 of different widths.

[0073] Loosen nut 619, move right support platform 616 and moving plate 602 to the right. Moving plate 602 slides with sliding column 12, and left screw 608 slides with right screw 620. Sleeve 2 has a scale 11 on its side. Fixed plate 601 corresponds to the zero mark position of scale 11. According to the length of static magnetic scale 621, move moving plate 602 to the corresponding position of scale 11. Tighten nut 619 on limit post 618. Nut 619 presses against side rod 617, thereby fixing left support platform 611 and right support platform 616. Through the above adjustment, static magnetic scale 621 of different lengths can be adapted.

[0074] Example 6

[0075] like Figures 1-20 As shown, the bracket assembly 4 includes a bent frame 401, which wraps around the upper side of the sleeve 2. The lower end of the sleeve 2 is provided with a base frame 402. The lower end of the locking screw 404 passes through the bent frame 401 and the base frame 402 and is threadedly fixed to the inner column 403. The inner column 403 slides in the support frame 406. A spring 405 is provided between the inner column 403 and the bottom of the support frame 406.

[0076] The support frame 406 is fixedly connected to the upper strap 407. The upper strap 407 and the lower strap 408 are fixed by locking screws 410. The hydraulic cylinder 1 is fixed between the upper strap 407 and the lower strap 408. The ends of the upper strap 407 and the lower strap 408 are provided with reinforcing ribs 409.

[0077] The working principle of the above technical solution is as follows: the lower end of the locking screw 404 passes through the bent frame 401 and the base frame 402, and is threaded to the inner column 403, thereby fixing the bent frame 401, the base frame 402 and the inner column 403 together. The sleeve 2 is fixed between the bent frame 401 and the base frame 402. The oil cylinder 1 is fixed between the upper strap 407 and the lower strap 408. The reinforcing rib 409 increases the strength of the ends of the upper strap 407 and the lower strap 408. The spring 405 set between the inner column 403 and the bottom of the support frame 406 has a certain shock absorption and buffer function to prevent the carbon fiber static magnetic grid sensor device from being damaged by strong vibration.

[0078] Example 7

[0079] like Figures 1-20 As shown, the upper side of the sleeve 2 is provided with a cleaning component 9. The cleaning component 9 includes a bottom shell 901. One end of the bottom shell 901 is fixedly connected to the front hook 305 through the bracket plate 902. The other end of the bottom shell 901 is fixed on the cleaning bracket 909. An upper sliding cover 903 is slidably connected to the bottom shell 901. One end of the upper sliding cover 903 is fixed to the sleeve 2. The other end of the upper sliding cover 903 is slidably connected to an air intake valve 904. The air intake valve 904 is provided with multiple elongated holes 905. A spring 906 is provided between the end of the air intake valve 904 and the end of the upper sliding cover 903. Air outlet pipes 907 are connected to both sides of the bottom shell 901. The end of the air outlet pipe 907 is connected to a telescopic elbow 908.

[0080] The cleaning bracket 909 is slidably connected in the groove 10 provided on the outside of the sleeve 2. The cleaning bracket 909 is rotatably connected to the upper roller brush 911. The upper roller brush 911 has a gear 912 in the middle. The gear 912 meshes with the rack 913 for transmission. The rack 913 is fixed at the upper end of the sleeve 2. The two ends of the upper roller brush 911 are respectively meshed with two side roller brushes 910 through bevel gears. Both side roller brushes 910 are rotatably connected to the cleaning bracket 909. Two air outlet pipes 907 pass through the center of the two side roller brushes 910 respectively.

[0081] The working principle of the above technical solution is as follows: When the piston rod of the hydraulic cylinder 1 extends forward, it drives the front hook 305 to move forward through the front mounting seat 5, drives the bottom shell 901 to move forward through the bracket plate 902, drives the cleaning bracket 909 to move forward, and drives the two side roller brushes 910 and one upper roller brush 911 to move forward.

[0082] As the bottom shell 901 slides between the upper sliding cover 903, the volume of the chamber between the bottom shell 901 and the upper sliding cover 903 becomes smaller. The air in the chamber is compressed and ejected at high speed from the two thinner air outlet pipes 907. The air is then sprayed through the telescopic elbow 908 towards the static magnetic scale assembly 6 at the bottom of the sleeve 2, blowing away the dust on the static magnetic scale assembly 6.

[0083] In addition, during the forward movement of the upper roller brush 911, the upper roller brush 911 meshes with the rack 913, causing the upper roller brush 911 to rotate and move forward at the same time. The upper roller brush 911 cleans the upper surface of the sleeve 2 with roller brush. The upper roller brush 911 drives the two side roller brushes 910 to rotate and move forward at the same time. The two side roller brushes 910 clean the two sides of the sleeve 2 with roller brush respectively.

[0084] When the piston rod of cylinder 1 retracts backward, it drives the front hook 305 to move backward via the front mounting seat 5, and drives the bottom shell 901 to move backward via the bracket plate 902. The volume of the chamber between the bottom shell 901 and the upper sliding cover 903 increases. Under the action of external atmospheric pressure, the intake valve column 904 is squeezed to slide into the chamber, which drives the second spring 906 to be compressed. The elongated hole 905 on the intake valve column 904 moves into the chamber, and the outside air quickly enters the chamber through the elongated hole 905 to balance the air pressure in the chamber.

[0085] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A lightweight carbon fiber static magnetic grating sensor device, characterized in that, Includes a sleeve (2), a measuring rod assembly (3) is slidably connected inside the sleeve (2), a static magnetic scale assembly (6) is installed on the outside of the sleeve (2), the sleeve (2) is installed on the outside of the oil cylinder (1) through a bracket assembly (4), and the front end of the measuring rod assembly (3) is fixedly installed to the piston rod of the oil cylinder (1) through a front mounting seat (5). The main materials of the sleeve (2) and the measuring rod assembly (3) are both carbon fiber composite materials.

2. The lightweight carbon fiber static magnetic grating sensor device according to claim 1, characterized in that, The sleeve (2) is equipped with a fully open proximity switch (7) and a fully closed proximity switch (8).

3. The lightweight carbon fiber static magnetic grating sensor device according to claim 1, characterized in that, The measuring rod assembly (3) includes multiple carbon fiber tubes (301), with an aluminum tube (302) inserted at the connection between two adjacent carbon fiber tubes (301). A measuring rod core (303) is inserted inside the aluminum tube (302), and the ends of two adjacent carbon fiber tubes (301) are fixed to the aluminum tube (302) and the measuring rod core (303) by a locking screw (304).

4. The lightweight carbon fiber static magnetic grating sensor device according to claim 3, characterized in that, The measuring rod inner core (303) is rotatably connected to a front hook (305), which is fixedly installed to the piston rod of the oil cylinder (1) via a front mounting seat (5).

5. The lightweight carbon fiber static magnetic grating sensor device according to claim 1, characterized in that, The static magnetic scale assembly (6) includes a fixed plate (601) and a movable plate (602). The fixed plate (601) is fixed to the lower end of the sleeve (2), and the movable plate (602) slides on the sliding column (12) provided at the lower end of the sleeve (2). A scale (11) is provided on the side of the sleeve (2). A support platform is provided between the fixed plate (601) and the movable plate (602). The two ends of the support platform abut against the inner walls of the fixed plate (601) and the movable plate (602) respectively. Static magnetic scales (621) can be inserted into both the upper and lower sides of the support platform. Adjustment components are provided on both the fixed plate (601) and the movable plate (602).

6. The lightweight carbon fiber static magnetic grating sensor device according to claim 5, characterized in that, The adjustment assembly includes a snap-fit ​​plate (603) with two slots. Two limiting posts (604) are fixed on a fixed plate (601). The two limiting posts (604) slide in the two slots respectively. The two limiting posts (604) are threadedly connected to two nuts (605) respectively. A slider (606) is slidably connected on the fixed plate (601). The side of the snap-fit ​​plate (603) snaps into the side of the slider (606). A hexagonal knob (614) is rotatably connected inside the slider (606). The hexagonal knob (614) is fixedly connected to two plug rods (615). Both plug rods (615) are slidably connected to a movable ring column (609). The movable ring column (609) is rotatably connected to one end of two rotating rods (610). The other ends of the two rotating rods (610) rotate within the support platform.

7. A lightweight carbon fiber static magnetic grating sensor device according to claim 6, characterized in that, The movable ring column (609) is internally threaded with a screw rod, and a hexagonal knob one (607) is fixed at the end of the screw rod. The hexagonal knob one (607) is rotatably connected to the hexagonal knob two (614). A hexagonal cylinder (613) is slidably connected to the outside of the hexagonal knob two (614). The slider (606) is provided with a groove, and a magnet (612) is fixed in the groove. The hexagonal cylinder (613) made of metal is inserted into the groove and magnetically attracted and fixed to the magnet (612).

8. The lightweight carbon fiber static magnetic grating sensor device according to claim 7, characterized in that, The support platform includes two left support platforms (611) and two right support platforms (616). The two left support platforms (611) are slidably connected to the two right support platforms (616) respectively. A locking structure is provided at the slidable connection between the left support platform (611) and the right support platform (616). The screw includes a left screw (608) and a right screw (620). The left screw (608) and the right screw (620) are slidably connected. The two left support platforms (611) are equidistantly arranged on both sides of the left screw (608). The two right support platforms (616) are equidistantly arranged on both sides of the right screw (620). The left screw (608) is rotatably connected to the movable ring column (609). The two ends are rotatably connected to the two left support platforms (611) respectively.

9. A lightweight carbon fiber static magnetic grating sensor device according to claim 1, characterized in that, The bracket assembly (4) includes a bent frame (401), which wraps around the upper side of the sleeve (2). The lower end of the sleeve (2) is provided with a base frame (402). The lower end of the locking screw (404) passes through the bent frame (401) and the base frame (402) and is threaded to the inner column (403). The inner column (403) slides in the support frame (406). A spring (405) is provided between the inner column (403) and the bottom of the support frame (406).

10. A lightweight carbon fiber static magnetic grating sensor device according to claim 9, characterized in that, The support frame (406) is fixedly connected to the upper strap (407), and the upper strap (407) and the lower strap (408) are fixed by locking screws (410). The oil cylinder (1) is fixed between the upper strap (407) and the lower strap (408). The ends of the upper strap (407) and the lower strap (408) are provided with reinforcing ribs (409).

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