A hydraulic cylinder displacement sensor device with multiple levels of protection

Abstract

The utility model discloses a kind of hydraulic cylinder displacement sensor devices with multistage protection, including hydraulic cylinder main body and displacement sensor main body, the displacement sensor main body outside is equipped with protective component, connecting component is equipped between the displacement sensor main body and hydraulic cylinder main body, the protective component includes with the fixed connection of displacement sensor main body outside fixed cylinder, the multiple protection grooves that are arranged in circumference and are opened in fixed cylinder outside and the protection pole being connected with protection groove, the utility model is by setting hydraulic cylinder main body, displacement sensor main body and protective component, solved the displacement sensor for current hydraulic cylinder when using, although it can detect the telescopic displacement of hydraulic cylinder piston rod in real time, but displacement sensor outside lacks protective structure, displacement sensor is collided by object, very easy to appear damage condition, and then it will affect the normal use of hydraulic cylinder, to lead to the problem of reduced practicability.

Description

Technical Field

[0001] This utility model relates to the field of displacement sensor technology, specifically to a hydraulic cylinder displacement sensor device with multi-level protection. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy to achieve linear reciprocating motion or oscillating motion. It is widely used in the hydraulic systems of various machines. A displacement sensor uses various components to detect the physical changes of an object and converts these changes into distance. The core of using a hydraulic cylinder and a displacement sensor is to detect the extension and retraction displacement of the hydraulic cylinder piston rod in real time (such as extension length, retraction position, etc.) through the sensor and feed the displacement signal back to the control system to achieve precise control of the hydraulic cylinder's position, speed, or stroke.

[0003] Existing patent CN217877527U discloses a displacement sensor, relating to the field of displacement measurement device technology. It includes a displacement sensor coil and a displacement sensor connecting rod. The displacement sensor coil has a through hole along its axial direction to accommodate the displacement sensor connecting rod, so that when the displacement sensor coil is fitted onto the surface of the displacement sensor connecting rod, the two generate relative motion through electromagnetic interaction. The surface of the displacement sensor connecting rod is provided with graduations to display the displacement amount. By providing graduations on the displacement sensor surface, the displacement change can be read intuitively. When the displacement sensor signal transmission is interrupted for various reasons, it does not affect the displacement sensor reading. Furthermore, by comparing the displacement value displayed on the graduations with the displacement value after the sensor signal transmission, the cause of the fault can be determined, facilitating the maintenance of the displacement sensor.

[0004] Current displacement sensors for hydraulic cylinders can detect the extension and retraction displacement of the piston rod in real time, but they lack protective structures on the outside. If the displacement sensor is hit by an object, it is very easy to be damaged, which will affect the normal use of the hydraulic cylinder and reduce its practicality. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic cylinder displacement sensor device with multi-level protection, in order to solve the problem mentioned in the background art that, although existing hydraulic cylinder displacement sensors can detect the extension and retraction displacement of the hydraulic cylinder piston rod in real time, the displacement sensor lacks a protective structure on the outside. If the displacement sensor is hit by an object, it is very easy to be damaged, which will affect the normal use of the hydraulic cylinder and reduce its practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder displacement sensor device with multi-level protection, comprising a hydraulic cylinder body and a displacement sensor body, wherein a protective component is provided on the outside of the displacement sensor body, and a connecting component is provided between the displacement sensor body and the hydraulic cylinder body; The protective component includes a fixed cylinder fixedly connected to the outside of the displacement sensor body, multiple protective grooves arranged circumferentially on the outside of the fixed cylinder, a protective rod connected to the protective grooves, a first spring sleeved on the outside of the protective rod, and a protective plate fixedly connected to one end of the protective rod. The protective rod is slidably connected to the protective grooves, and the protective plate is arc-shaped.

[0007] Preferably, the connecting component includes a connecting seat fixedly connected to the top of the displacement sensor body, a first bolt connected to the connecting seat, insertion holes respectively opened on both sides of the bottom of the hydraulic cylinder body, and insertion rods respectively fixedly connected to both sides of the top of the connecting seat. The insertion rods are inserted into the insertion holes, the first bolt is screwed to the connecting seat, and the first bolt is screwed to the hydraulic cylinder body.

[0008] Preferably, a limiting groove is formed on one side of the protective rod, and a limiting rod is fixedly connected to the inner wall of the protective groove, with the limiting rod slidably connected to the limiting groove.

[0009] Preferably, a first connecting ring is fixedly connected to one side of the fixed cylinder, a second connecting ring is provided on one side of the first connecting ring, and a second bolt is provided on both sides of the first connecting ring and the second connecting ring.

[0010] Preferably, a second spring is provided on one side of the limiting rod, and the two ends of the second spring are fixedly connected to the limiting rod and the inner wall of the limiting groove, respectively.

[0011] Preferably, a protective pad is provided on one side of the protective plate, and the protective pad is adhered to the protective plate.

[0012] Preferably, mounting holes are provided around the top of the hydraulic cylinder body.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a hydraulic cylinder body, a displacement sensor body, and protective components, the protective plate can block splashing objects. After being hit, the protective plate will move, which in turn can drive the protective rod to move. The protective rod can deform the first spring, which can initially buffer the impact. Due to the existence of the limit rod, the second spring will also deform, which can buffer the impact a second time. Thus, multi-level protection of the displacement sensor body can be achieved, which can protect it from damage, thereby increasing its service life and greatly improving the practicality of the device. 2. By providing connecting components, the first bolt can be screwed to the bottom of the hydraulic cylinder body, thereby stably fixing the connecting seat to the hydraulic cylinder body and fixing the displacement sensor body to the hydraulic cylinder body. The first connecting ring and the second connecting ring can contact the cylinder barrel and be connected and fixed by the second bolt, thereby improving the fixing effect of the displacement sensor body and preventing it from detaching from the hydraulic cylinder body, thus further improving its practicality. Attached Figure Description

[0014] Figure 1 A three-dimensional structural schematic diagram provided for this utility model; Figure 2 The left view provided for this utility model; Figure 3 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA; Figure 4 Provided by this utility model Figure 3 Enlarged view of point B in the middle; Figure 5 Provided by this utility model Figure 3 A magnified view of point C in the middle.

[0015] In the diagram: 1. Hydraulic cylinder body; 11. Displacement sensor body; 21. Fixing cylinder; 22. Protective groove; 23. Protective rod; 24. First spring; 25. Protective plate; 31. Connecting seat; 32. First bolt; 33. Insertion hole; 34. Insertion rod; 41. Limiting groove; 42. Limiting rod; 51. First connecting ring; 52. Second connecting ring; 53. Second bolt; 61. Second spring; 71. Protective pad; 81. Mounting hole. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4This utility model provides a technical solution: a hydraulic cylinder displacement sensor device with multi-level protection, including a hydraulic cylinder body 1 and a displacement sensor body 11. A protective component is provided on the outside of the displacement sensor body 11, and a connecting component is provided between the displacement sensor body 11 and the hydraulic cylinder body 1. The protective component includes a fixed cylinder 21 fixedly connected to the outside of the displacement sensor body 11, multiple protective grooves 22 arranged circumferentially on the outside of the fixed cylinder 21, a protective rod 23 connected to the protective grooves 22, a first spring 24 sleeved on the outside of the protective rod 23, and a protective plate 25 fixedly connected to one end of the protective rod 23. The protective rod 23 is slidably connected to the protective grooves 22. The protective plate 25 is arc-shaped. Both ends of the first spring 24 are fixedly connected to the protective plate 25 and the fixed cylinder 21, respectively. The protective plate 25 can block external collisions, and the protective plate 25 can cause the first spring 24 to deform. The protective rod 23 can support the first spring 24 to prevent it from deforming and tilting. The first spring 24 can buffer impacts, thereby protecting the displacement sensor body 11. A limiting groove 41 is formed on one side of the protective rod 23. A limiting rod 42 is fixedly connected to the inner wall of the protective groove 22. The limiting rod 42 is slidably connected to the limiting groove 41. The movement of the protective rod 23 allows the limiting rod 42 to slide within the limiting groove 41, thus limiting the movement distance of the protective rod 23 and preventing excessive deformation of the first spring 24, thereby protecting the first spring 24. A second spring 61 is provided on one side of the limiting rod 42. The two ends of the second spring 61 are fixedly connected to the limiting rod 42 and the inner wall of the limiting groove 41, respectively. The limiting rod 42 is slidably connected to the limiting groove 41. When sliding inward, the second spring 61 can be squeezed to deform it. The elasticity of the second spring 61 can improve the protection performance of the displacement sensor body 11. A protective pad 71 is provided on one side of the protective plate 25. The protective pad 71 is adhered to the protective plate 25. The protective pad 71 can provide a certain degree of protection for the protective plate 25, avoid direct contact and collision of the protective plate 25, and improve the service life of the protective plate 25. Mounting holes 81 are opened around the top of the hydraulic cylinder body 1. The mounting holes 81 can be used to facilitate the installation and fixation of the hydraulic cylinder body 1.

[0018] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 5The connecting components include a connecting seat 31 fixedly connected to the top of the displacement sensor body 11, a first bolt 32 connected to the connecting seat 31, insertion holes 33 respectively opened on both sides of the bottom of the hydraulic cylinder body 1, and insertion rods 34 respectively fixedly connected to both sides of the top of the connecting seat 31. The insertion rods 34 are inserted into the insertion holes 33, and the first bolts 32 are screwed into the connecting seat 31 and the hydraulic cylinder body 1. The insertion rods 34 can be inserted into the insertion holes 33, which facilitates the screwing of the first bolts 32 into the hydraulic cylinder body 1. Tightening the first bolts 32 can connect and fix the connecting seat 31 to the top of the hydraulic cylinder body 1, thereby controlling the displacement. The sensor body 11 is quickly connected and fixed to the hydraulic rod body, which facilitates stroke detection of the hydraulic cylinder body 1. A first connecting ring 51 is fixedly connected to one side of the fixed cylinder 21, and a second connecting ring 52 is provided on one side of the first connecting ring 51. Second bolts 53 are provided on both sides of the first connecting ring 51 and the second connecting ring 52. The first connecting ring 51 and the second connecting ring 52 can contact the cylinder of the hydraulic cylinder body 1. The first connecting ring 51 and the second connecting ring 52 can be fixed by the second bolts 53, thereby improving the connection stability of the displacement sensor body 11 and preventing it from detaching from the hydraulic cylinder body 1.

[0019] Working principle: During operation, insert rod 34 into insertion hole 33, then screw first bolt 32 onto top of hydraulic cylinder body 1 to initially fix displacement sensor body 11. At this time, first connecting ring 51 is in contact with cylinder barrel of hydraulic cylinder body 1. Then, second connecting ring 52 is attached to first connecting ring 51, and second bolt 53 is tightened to improve the fixing stability of displacement sensor body 11. When an object splashes, the object contacts protective pad 71 and pushes protective pad 71 to deform, causing it to push protective plate 25 to move. The movement of protective plate 25 can drive first spring 24 to deform, and at the same time drive protective rod 23 to move. The movement of protective rod 23 can make limiting rod 42 slide in limiting groove 41. The sliding of limiting rod 42 can squeeze second spring 61 to deform. The first spring 24 and second spring 61 can provide multi-level protection and buffer against impact, thereby protecting displacement sensor body 11 and improving its service life. The above is the working process of the entire device. 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 hydraulic cylinder displacement sensor device with multi-level protection, comprising a hydraulic cylinder body (1) and a displacement sensor body (11), characterized in that: The displacement sensor body (11) is provided with a protective component on the outside, and a connecting component is provided between the displacement sensor body (11) and the hydraulic cylinder body (1); The protective component includes a fixed cylinder (21) fixedly connected to the outside of the displacement sensor body (11), a plurality of protective grooves (22) arranged in a circle on the outside of the fixed cylinder (21), a protective rod (23) connected to the protective grooves (22), a first spring (24) sleeved on the outside of the protective rod (23), and a protective plate (25) fixedly connected to one end of the protective rod (23). The protective rod (23) is slidably connected to the protective grooves (22), and the protective plate (25) is arc-shaped.

2. The hydraulic cylinder displacement sensor device with multi-level protection according to claim 1, characterized in that: The connecting component includes a connecting seat (31) fixedly connected to the top of the displacement sensor body (11), a first bolt (32) connected to the connecting seat (31), insertion holes (33) respectively opened on both sides of the bottom of the hydraulic cylinder body (1), and insertion rods (34) fixedly connected to both sides of the top of the connecting seat (31). The insertion rods (34) are inserted into the insertion holes (33), the first bolts (32) are screwed into the connecting seat (31), and the first bolts (32) are screwed into the hydraulic cylinder body (1).

3. The hydraulic cylinder displacement sensor device with multi-level protection according to claim 1, characterized in that: A limiting groove (41) is provided on one side of the protective rod (23), and a limiting rod (42) is fixedly connected to the inner wall of the protective groove (22). The limiting rod (42) is slidably connected to the limiting groove (41).

4. The hydraulic cylinder displacement sensor device with multi-level protection according to claim 1, characterized in that: A first connecting ring (51) is fixedly connected to one side of the fixed cylinder (21), and a second connecting ring (52) is provided on one side of the first connecting ring (51). A second bolt (53) is provided on both sides of the first connecting ring (51) and the second connecting ring (52).

5. A hydraulic cylinder displacement sensor device with multi-level protection according to claim 3, characterized in that: A second spring (61) is provided on one side of the limiting rod (42), and the two ends of the second spring (61) are fixedly connected to the inner wall of the limiting rod (42) and the limiting groove (41), respectively.

6. A hydraulic cylinder displacement sensor device with multi-level protection according to claim 1, characterized in that: A protective pad (71) is provided on one side of the protective plate (25), and the protective pad (71) is adhered to the protective plate (25).

7. A hydraulic cylinder displacement sensor device with multi-level protection according to claim 1, characterized in that: The hydraulic cylinder body (1) has mounting holes (81) on all four sides of its top.

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