Wear-resistant linear displacement sensor

Abstract

The utility model provides a wear-resistant linear displacement sensor, and relates to the field of linear displacement sensors, the wear-resistant linear displacement sensor comprises a linear displacement sensor housing, a slip sheet and a lubrication box, the two side walls of the linear displacement sensor housing are provided with guide rails, and the upper and lower ends of the inner sides of the guide rails are provided with guide grooves; the sliding piece is slidably connected to the upper surface of the linear displacement sensor shell and comprises a sliding block with the two ends connected, the sliding block is slidably connected into the guide rails, the upper end and the lower end of the sliding block are provided with an upper sliding head and a lower sliding head which are slidably connected respectively, and the upper sliding head and the lower sliding head are slidably connected into the guide grooves respectively. The lubricating box is arranged on the upper surface of the sliding piece, the outer side of the lubricating box is connected with a flow guide pipe, and the flow guide pipe is inserted into a flow guide hole formed in the sliding piece. The linear displacement sensor solves the problems that an existing linear displacement sensor is abraded in the using process, and the inner side of the guide rail on the shell is prone to being polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of linear displacement sensors, in particular to a wear-resistant linear displacement sensor. Background Art

[0002] Displacement sensor, also known as linear sensor, is a linear device belonging to metal induction. The function of the sensor is to convert various measured physical quantities into electrical quantities. Displacement is a quantity related to the movement of the position of an object during movement. The range of displacement measurement methods involved is quite wide. Small displacements are usually detected by strain, inductance, differential transformer, eddy current, and Hall sensors. Large displacements are often measured by induction synchronizers, gratings, capacitive gratings, magnetic gratings and other sensing technologies. After searching, the prior art (publication number: CN214951216U) records "a miniature sliding rod type linear displacement sensor, including a shell, a sensor body, and a shell cover, wherein one end of the sensor body is located in the shell, an adjustment mechanism is provided inside the shell, and an anti-collision mechanism is provided outside the shell; the anti-collision mechanism includes a rubber sleeve, an arc-shaped spring, a first buffer spring, and a rubber ring. The utility model is convenient for cleaning dust on the surface of the sensor body by providing bristles, and when the top of the shell encounters a collision with a foreign object, the rubber sleeve can be deformed to produce a buffering effect, and the arc-shaped spring can be deformed by the deformation of the rubber sleeve, and the first buffer spring can produce a buffering effect at the same time, and the arc-shaped spring can be deformed by the deformation of the rubber sleeve, and the rubber ring can be deformed by the deformation of the rubber ring, and the L-shaped rod can be moved by the deformation of the rubber ring, and the second buffer spring can be squeezed by the movement of the L-shaped rod, so that the second buffer spring produces a buffering effect, and finally the damage caused by the collision of foreign objects with the shell can be reduced."

[0003] Although the micro-slide bar linear displacement sensor in the prior art has achieved the shell protection effect of the linear displacement sensor, there are still some shortcomings: the slide involved in the existing linear displacement sensor will wear between the shell guide rails after long-term use, which will lead to inaccurate measurement after wear, and the dust and impurities entering the inside of the shell guide rails are not easy to clean, which will lead to aggravated wear. Utility Model Content

[0004] In order to overcome the defects of the prior art, a wear-resistant linear displacement sensor is provided to solve the problems that the existing linear displacement sensors have wear during use and the inner side of the guide rail on the shell is easily contaminated.

[0005] To achieve the above-mentioned purpose, a wear-resistant linear displacement sensor is provided, comprising: a linear displacement sensor housing, a slide and a lubrication box, guide rails are provided on both side walls of the linear displacement sensor housing, and guide grooves are provided at the inner upper and lower ends of the guide rails, the slide is slidably connected to the upper surface of the linear displacement sensor housing, and the slide comprises a slider connected at both ends, and the slider is slidably connected in the guide rail, an upper slider and a lower slider are respectively provided at the upper and lower ends of the slider, and the upper slider and the lower slider are respectively slidably connected in the guide groove, the lubrication box is provided on the upper surface of the slide, and a guide pipe is connected to the outer side of the lubrication box, and the guide pipe is inserted into the guide hole opened inside the slide.

[0006] Furthermore, the guide rail is configured as a groove structure provided on the surface of the housing of the linear displacement sensor, and the guide groove and the guide rail form a cross groove structure.

[0007] Furthermore, a sliding hole is provided inside the sliding block, a spring is provided inside the sliding hole, and opposite ends of the upper sliding head and the lower sliding head are both connected to the sliding hole.

[0008] Furthermore, the inner end of the sliding block is set as an inner sliding end, and the sliding end surfaces of the inner sliding end, the upper sliding head and the lower sliding head are all installed with balls.

[0009] Furthermore, the upper surface of the slide is connected to a communication terminal, and one side end surface of the communication terminal is connected to a wiring port.

[0010] Furthermore, a through hole is provided on the upper side of the guide groove, and the guide hole corresponds to the position of the through hole in the vertical direction.

[0011] Furthermore, a box cover is provided on the upper side of the lubrication box, and lubricating oil and a pumping pump are provided inside the lubrication box, and the output end of the pumping pump is connected to the guide pipe through a built-in pipe, and an electromagnetic valve is provided in the pipeline of the guide pipe.

[0012] The beneficial effects of the utility model are:

[0013] 1. The guide rails and guide grooves provided in the housing of the linear displacement sensor are used to make the sliders at both ends of the slide slide and engage in the guide rails and guide grooves to achieve a stable sliding connection. At the same time, the balls installed at the sliding ends of the upper slider, the lower slider and the inner slider are used to achieve the effect of reducing the friction force by rolling friction. At the same time, through the sliding holes and springs, after the balls are worn out, they can still be connected to the guide rails through the structure of the slider itself, thereby achieving the effect of compensating for the wear surface of the slider and improving the wear resistance.

[0014] 2. Utilize the lubricating oil and pumping pump inside the lubrication box to deliver the internal lubricating oil to the guide hole through the built-in tube and the guide tube. In actual use, by setting the position of the sliding plate movement, when the guide hole and the through hole opened at the upper end of the guide groove correspond to each other in the upper and lower positions, open the electromagnetic valve at this time, so that the lubricating oil enters the guide groove through the guide hole and the through hole, and then diffuses into the entire guide rail, so that the dust and impurities on the inner side of the guide rail are moistened and taken out of the guide rail during movement, and at the same time, it has a lubricating effect between the slider and the guide rail, further reducing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the overall appearance structure of an embodiment of the utility model.

[0016] Figure 2 The figure is a schematic diagram of the side cross-sectional structure of the sliding plate according to the embodiment of the utility model.

[0017] Figure 3 For the utility model embodiment Figure 2 Schematic diagram of the structure at point A in the middle.

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the lubrication box according to an embodiment of the utility model.

[0019] In the figure: 1. Linear displacement sensor housing; 11. Guide rail; 12. Guide groove; 2. Slide; 21. Communication terminal; 22. Guide hole; 23. Slider; 24. Upper slider; 25. Lower slider; 26. Sliding hole; 27. Spring; 28. Inner slider; 29. ​​Ball; 3. Lubrication box; 31. Guide pipe; 32. Box cover; 33. Pumping pump; 34. Internal pipe. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 4 As shown, the utility model provides a wear-resistant linear displacement sensor, comprising: a linear displacement sensor housing 1, a slide 2 and a lubrication box 3, guide rails 11 are provided on both side walls of the linear displacement sensor housing 1, and guide grooves 12 are provided at the upper and lower ends of the inner side of the guide rails 11, the slide 2 is slidably connected to the upper surface of the linear displacement sensor housing 1, and the slide 2 comprises a slider 23 connected at both ends, and the slider 23 is slidably connected in the guide rail 11, and the upper and lower ends of the slider 23 are respectively provided with an upper slider 24 and a lower slider 24 connected in a sliding manner. The upper slider 24 and the lower slider 25 are respectively slidably connected in the guide groove 12, the lubrication box 3 is arranged on the upper surface of the slide 2, and the outer side of the lubrication box 3 is connected with a guide pipe 31, and the guide pipe 31 is inserted into the guide hole 22 opened inside the slide 2, a box cover 32 is arranged on the upper side of the lubrication box 3, and the interior of the lubrication box 3 is provided with lubricating oil and a pumping pump 33, and the output end of the pumping pump 33 is connected with the guide pipe 31 through a built-in pipe 34, and an electromagnetic valve is arranged in the pipeline of the guide pipe 31.

[0021] In this embodiment, the linear displacement sensor housing 1, the slide 2 and the lubrication box 3 constitute the main structure of the wear-resistant linear displacement sensor involved in this application, wherein the movement of the slide 2 and the electrical components inside the linear displacement sensor housing 1 generate a displacement signal to realize the measurement principle of the straight-line distance, which is consistent with the linear displacement sensor under the prior art.

[0022] Specifically, the slider 23 is configured as an L-shaped structure as a whole, and the end surface areas of the upper slider 24 and the lower slider 25 are smaller than the transverse end surface area of ​​the slider 23 , and the upper slider 24 and the lower slider 25 and the slider 23 itself form a cross block structure.

[0023] Specifically, the lubrication box 3 moves synchronously with the slide 2 , and in the set position, when the guide hole 22 coincides with the through hole, the pumping pump 33 is started and the electromagnetic valve is opened, so that the lubricating oil can be delivered to the guide rail 11 .

[0024] It should be noted that a plurality of through holes may be provided in the upper shell of the guide rail 11 , and the provision of the through holes does not involve the electrical components inside the housing 1 of the linear displacement sensor, so lubricating oil will not penetrate into the interior of the sensor.

[0025] like Figures 1 to 3 As shown, the guide rail 11 is configured as a groove structure provided on the surface of the linear displacement sensor housing 1, and the guide groove 12 and the guide rail 11 form a cross groove structure, a sliding hole 26 is provided inside the slider 23, and a spring 27 is provided inside the sliding hole 26, and the opposite ends of the upper slider 24 and the lower slider 25 are both connected to the sliding hole 26, the inner end of the slider 23 is configured as an inner sliding end 28, and the sliding end surfaces of the inner sliding end 28, the upper slider 24 and the lower slider 25 are all installed with balls 29, the upper surface of the slide 2 is connected to the communication terminal 21, and one side end surface of the communication terminal 21 is connected to the wiring port, a through hole is provided on the upper side of the guide groove 12, and the guide hole 22 corresponds to the position of the through hole in the vertical direction.

[0026] As a preferred embodiment, when the ball 29 wears to the end surfaces of the sliding ends of the upper slider 24 and the lower slider 25, the sliding end surfaces are automatically compensated by the spring 27 inside the sliding hole 26, thereby extending the sliding wear life.

[0027] As a preferred embodiment, by providing through holes, it is easy for the lubricating oil to penetrate downward into the entire guide rail 11 by gravity, thereby further reducing wear.

[0028] When in use, the guide rails and guide grooves opened in the housing of the linear displacement sensor are used to make the sliders at both ends of the slider slide and engage in the guide rails and guide grooves to achieve a stable sliding connection. At the same time, the balls installed at the sliding ends of the upper slider, the lower slider and the inner slider are used to achieve the effect of reducing the friction force through rolling friction. At the same time, through the sliding hole and the spring, after the ball is worn and consumed, it can still be connected to the guide rail through the structure of the slider itself, so as to achieve the compensation effect on the worn surface of the slider, thereby improving the wear resistance effect. The lubricating oil and the pumping pump inside the lubrication box are used to transport the internal lubricating oil to the guide hole through the built-in pipe and the guide pipe. In actual use, by setting the position of the slider movement, when the upper and lower positions of the through hole opened at the upper end of the guide groove correspond to each other, the electromagnetic valve is opened at this time, so that the lubricating oil enters the guide groove through the guide hole and the through hole, and then diffuses into the entire guide rail, so that the dust and impurities on the inner side of the guide rail are moistened and then taken out of the guide rail during the movement, thereby avoiding the accumulation of impurities and dust.

[0029] The wear-resistant linear displacement sensor of the utility model can effectively solve the problems of wear during use of the existing linear displacement sensors and the problem that the inner side of the guide rail on the shell is easily contaminated. It reduces the wear of the linear displacement sensor during use on the basis of the existing wear-resistant linear displacement sensor technology, prolongs the service life, and facilitates the processing of impurities and dust in the guide rail.

Claims

1. A wear-resistant linear displacement sensor, comprising: A linear displacement sensor housing (1), a slide (2) and a lubrication box (3), characterized in that: guide rails (11) are provided on both side walls of the linear displacement sensor housing (1), and guide grooves (12) are provided at the inner upper and lower ends of the guide rails (11); the slide (2) is slidably connected to the upper surface of the linear displacement sensor housing (1), and the slide (2) includes a slider (23) connected at both ends, and the slider (23) is slidably connected in the guide rail (11); the upper and lower ends of the slider (23) are respectively provided with an upper slider (24) and a lower slider (25) slidably connected, and the upper slider (24) and the lower slider (25) are respectively slidably connected in the guide groove (12); the lubrication box (3) is provided on the upper surface of the slide (2), and a guide pipe (31) is connected to the outer side of the lubrication box (3), and the guide pipe (31) is inserted into a guide hole (22) provided inside the slide (2).

2. The wear-resistant linear displacement sensor according to claim 1, characterized in that: The guide rail (11) is configured as a groove structure provided on the surface of the linear displacement sensor housing (1), and the guide groove (12) and the guide rail (11) form a cross groove structure.

3. The wear-resistant linear displacement sensor according to claim 1, characterized in that: The sliding block (23) is provided with a sliding hole (26) inside which a spring (27) is provided. The opposite ends of the upper sliding head (24) and the lower sliding head (25) are both connected to the sliding hole (26).

4. The wear-resistant linear displacement sensor according to claim 1, characterized in that: The inner end of the slider (23) is set as an inner sliding end (28), and the sliding end surfaces of the inner sliding end (28), the upper sliding head (24) and the lower sliding head (25) are all installed with balls (29).

5. The wear-resistant linear displacement sensor according to claim 1, characterized in that: The upper surface of the slide (2) is connected to a communication terminal (21), and one side end surface of the communication terminal (21) is connected to a wiring port.

6. The wear-resistant linear displacement sensor according to claim 1, characterized in that: A through hole is provided on the upper side of the guide groove (12), and the guide hole (22) corresponds to the position of the through hole in the vertical direction.

7. The wear-resistant linear displacement sensor according to claim 1, characterized in that: The upper side of the lubrication box (3) is provided with a box cover (32), and the interior of the lubrication box (3) is provided with lubricating oil and a pumping pump (33), and the output end of the pumping pump (33) is connected to the guide pipe (31) through a built-in pipe (34), and an electromagnetic valve is provided in the pipeline of the guide pipe (31).

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