Protective device for rotating shaft speed measurement sensor

Abstract

The utility model provides a rotating shaft speed measurement sensor protection device, which comprises a sensor body, a base and a cover body, the base is provided with an accommodating cavity, a buffer pad is arranged in the accommodating cavity, a support frame is arranged on the buffer pad, the sensor body is arranged on the support frame, and a first through hole and a second through hole which are respectively communicated with the accommodating cavity are enclosed by the base and the cover body; a plurality of buffer assemblies are arranged on the cover body at intervals, each buffer assembly comprises a buffer seat, a buffer plate, a buffer spring and a damper, the buffer seats are fixedly connected with the cover body, the dampers are located between the buffer seats and the buffer plates, and the two ends of the dampers are matched with the buffer seats and the buffer plates correspondingly; the damper is sleeved with the buffer spring, the two opposite ends of the buffer spring in the telescopic direction abut against the buffer base and the buffer plates respectively, and all the buffer plates on the cover body define a square frame surrounding the cover body. The utility model has the technical effects of preventing the sensor from being influenced by external force to cause fault or damage and prolonging the service life of the sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of speed sensors, in particular to a rotating shaft speed sensor protection device. Background Art

[0002] A speed sensor is a sensor that measures the running speed of the object being measured and converts it into an output signal. It is widely used in industrial production machinery, special locomotives, wind power generation and other fields.

[0003] Chinese utility model patent publication number CN218885945U discloses a speed sensor with a protective structure, comprising a base, a lower case mounted on the top of the base, a sensor mounted on the inner side of the lower case, a set of support blocks mounted on the back of the lower case, placement slots on the left and right sides of the base, a spring sheet mounted on the inner side of the right placement slot, a limit block mounted on the bottom inner wall of the lower case, an upper case mounted on the outer side of the lower case, another limit block mounted on the top inner wall of the upper case, and the limit block located on the outer side of the sensor, a wire mounted on the back of the sensor, and a rubber ring mounted on the outer side of the wire, and a plurality of locking blocks mounted on the inner side of the bottom wall of the left placement slot. The speed sensor with a protective structure forms a closed space between the upper and lower cases to protect the sensor, preventing dust, mud, and water from entering the interior of the speed sensor, thereby increasing the service life of the speed sensor.

[0004] The speed sensor disclosed in the above utility model patent is installed in the working position through the fixing hole or spring sheet on the base, and its position remains fixed after the speed sensor is installed in the working position. When the speed sensor is used to measure the speed of the rotating shaft, the speed sensor may be hit by the rotating shaft due to the string movement or swing that may occur during the rotation of the rotating shaft. The speed sensor may be impacted by external force, which may cause damage to the upper box or even the sensor, affecting the normal operation of the speed sensor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a rotating shaft speed sensor protection device, which solves the problem in the prior art that the speed sensor is easily damaged by external impact.

[0006] According to an embodiment of the present utility model, a rotating shaft speed sensor protection device includes a sensor body, a base and a cover body detachably connected to the base, the base having a accommodating cavity and the cover body covering the opening of the accommodating cavity, a buffer pad being provided in the accommodating cavity and a support frame being provided on the buffer pad, the sensor body being arranged on the support frame, the base and the cover body forming a first through hole and a second through hole respectively connected to the accommodating cavity, and the first through hole and the second through hole being respectively located on opposite sides of the sensor body; a plurality of buffer components are arranged at intervals on the cover body, the buffer components including a buffer seat, a buffer plate, a buffer spring and a damper, the buffer seat being fixedly connected to the cover body, the damper being located between the buffer seat and the buffer plate, and the two ends of the damper respectively cooperate with the buffer seat and the buffer plate, the buffer spring being sleeved on the damper, and the opposite ends of the buffer spring in the extension and contraction direction respectively abut against the buffer seat and the buffer plate, and all the buffer plates on the cover body forming a square frame surrounding the cover body.

[0007] Furthermore, a bottom plate is provided on the base, and the bottom plate covers an end of the accommodating cavity away from the cover body, and a side of the buffer pad away from the support frame is in contact with the bottom plate.

[0008] Furthermore, the support frame is provided with a first arc-shaped groove, and the first arc-shaped groove is in contact with the outer peripheral wall of the sensor body.

[0009] Furthermore, a support portion is provided on the cover, and the support portion has a second arc-shaped groove, and the second arc-shaped groove is in contact with a side of the sensor body away from the first arc-shaped groove.

[0010] Furthermore, flexible pads are respectively provided in the first arc-shaped groove and the second arc-shaped groove, and the flexible pads are in contact with the outer peripheral wall of the sensor body.

[0011] Furthermore, it also includes a first end cover, the base and the cover body form a first cylinder surrounding the first through hole, the outer wall of the first cylinder is provided with a first threaded portion and the first end cover has a first threaded hole matching the first threaded portion.

[0012] Furthermore, it also includes a second end cover, the base and the cover body form a second cylinder that accommodates the second through hole, the outer wall of the second cylinder is provided with a second threaded portion and the second end cover has a second threaded hole that matches the second threaded portion.

[0013] Furthermore, the base is provided with a positioning hole, and the cover is provided with a positioning pin that matches the positioning hole.

[0014] Furthermore, a plurality of mounting holes are provided on the base at intervals, and the mounting holes are respectively provided close to the edge of the base.

[0015] Furthermore, two opposite sides of the base are rotatably connected with straps, one of the straps is provided with a first buckle and the other strap is provided with a second buckle that matches the first buckle.

[0016] Compared with the prior art, the present invention has the following beneficial effects: a support frame for placing the sensor body is provided in the accommodating cavity on the base, and a buffer pad is provided in the accommodating cavity to support the support frame, and after the sensor body is installed on the support frame, the cover body and the base are combined to close the opening of the accommodating cavity, so as to protect the sensor body in the space surrounded by the base and the cover body, and at the same time, the first through hole and the second through hole located at both ends of the sensor body respectively provide a head and a wire for extending out of the accommodating cavity, so that the sensor body can operate normally, and a plurality of buffer components are also provided on the cover body, and the buffer plates in the buffer components form a square shape surrounding the cover body, when the rotating shaft measured by the sensor body collides with the buffer plate, the buffer plate is moved relative to the buffer base by the action of the damper and the buffer spring to absorb the impact force generated by the collision, thereby avoiding damage to the cover body, and at the same time, the impact transmitted to the base is absorbed by the buffer pad to prevent the sensor body from being affected by external forces, which solves the technical problem that the speed sensor is easily damaged by external force impact, and produces the technical effect of preventing the sensor from being affected by external forces and causing failure or damage, and extending the service life of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a rotating shaft speed sensor protection device according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of a rotating shaft speed sensor protection device according to an embodiment of the present invention;

[0019] Figure 3 This is a partial exploded view of a rotating shaft speed sensor protection device according to an embodiment of the present invention;

[0020] Figure 4 This is a structural schematic diagram of a cover body in a rotating shaft speed sensor protection device according to an embodiment of the present invention.

[0021] In the above drawings: 1. base; 11. accommodating cavity; 12. first through hole; 12. second through hole; 13. bottom plate; 14. first cylinder; 15. first threaded portion; 16. second cylinder; 17. second threaded portion; 18. positioning hole; 19. mounting hole; 2. cover; 21. supporting portion; 22. second arc-shaped groove; 23. positioning pin; 3. buffer pad; 4. support frame; 41. first arc-shaped groove; 5. buffer assembly; 51. buffer seat; 52. buffer plate; 53. buffer spring; 54. damper; 6. first end cover; 61. first threaded hole; 7. second end cover; 71. second threaded hole; 8. strap; 100. sensor body; 101. head; 102. wire. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 4 As shown, an embodiment of the present invention provides a rotating shaft speed sensor protection device, comprising a sensor body 100, for protecting the sensor body 100 during the process of the sensor body 100 measuring the rotating shaft.

[0024] Please refer to Figure 1 、 Figure 2 and Figure 3The shaft speed sensor protection device also includes a base 1 and a cover 2, the base 1 has a receiving cavity 11, the cover 2 is detachably connected to the base 1 and covers the opening of the receiving cavity 11, a buffer pad 3 is provided in the receiving cavity 11 and a support frame 4 is provided on the buffer pad 3, the sensor body 100 is arranged on the support frame 4, the base 1 and the cover 2 are surrounded by a first through hole 12 and a second through hole 12 respectively connected to the receiving cavity 11, and the first through hole 12 and the second through hole 12 are respectively located on opposite sides of the sensor body 100, the first through hole 12 is for the head 101 of the sensor body 100 to extend out of the receiving cavity 11, and the second through hole 12 is for the wire 102 on the sensor body 100 to pass through; a plurality of buffer groups are provided at intervals on the cover 2. Part 5, the buffer assembly 5 includes a buffer seat 51, a buffer plate 52, a buffer spring 53 and a damper 54, the buffer seat 51 is fixedly connected to the cover body 2, the damper 54 is located between the buffer seat 51 and the buffer plate 52, and the two ends of the damper 54 are respectively matched with the buffer seat 51 and the buffer plate 52, the buffer spring 53 is sleeved on the damper 54, and the opposite ends of the buffer spring 53 in the expansion and contraction direction are respectively in contact with the buffer seat 51 and the buffer plate 52, when the buffer plate 52 is subjected to external force, the action of the damper 54 and the buffer spring 53 causes the buffer plate 52 to move relative to the buffer seat 51 and absorb the impact, and all the buffer plates 52 on the cover body 2 form a square frame surrounding the cover body 2 to protect the cover body 2.

[0025] Specifically, when the shaft speed sensor protection device provided in this embodiment collides with the shaft, the buffer plate 52 directly contacts the shaft. At this time, the damper 54 and the buffer spring 53 cause the buffer plate 52 to move relative to the buffer base 1 to absorb the impact force generated by the collision between the buffer plate 52 and the shaft, thereby preventing damage to the cover 2. Simultaneously, the impact transmitted into the base 1 is absorbed by the buffer pad 3, thereby reducing the impact on the sensor body 100 and preventing damage to the sensor body 100. The shaft speed sensor protection device provided in this embodiment can prevent the sensor body 100 from being affected by external forces, resulting in malfunction or damage, ensuring that the sensor body 100 can operate stably for a long time, thereby extending the service life of the sensor body 100.

[0026] like Figure 2As shown, the base 1 is further provided with a bottom plate 13, which covers the end of the accommodating cavity 11 away from the cover body 2, and the side of the buffer pad 3 away from the support frame 4 is in contact with the bottom plate 13. The bottom plate 13 is used to close the opening at the bottom of the accommodating cavity 11. By removing the bottom plate 13, the support frame 4 and the buffer pad 3 can be easily installed in the accommodating cavity 11, making it easy to assemble the rotating shaft speed sensor protection device. After the bottom plate 13 is installed on the base 1, it supports the buffer pad 3 to ensure that the position of the buffer pad 3 and the support frame 4 in the accommodating cavity 11 remains stable.

[0027] In this embodiment, the buffer pad 3 is made of elastic materials such as silica gel and foam, so that the buffer pad 3 has a good ability to absorb impact and effectively protect the sensor body 100 installed on the support frame 4.

[0028] Please combine Figure 2 、 Figure 3 and Figure 4 The support frame 4 is provided with a first arcuate groove 41, which is in contact with the outer peripheral wall of the sensor body 100. The first arcuate groove 41 provided on the support frame 4 is used to position the sensor body 100, so as to facilitate installation of the sensor body 100 in the accommodating cavity 11 and maintain a stable position of the sensor body 100 on the support frame 4.

[0029] Specifically, the cover 2 is provided with a support portion 21 having a second arcuate groove 22. The second arcuate groove 22 is aligned with the side of the sensor body 100 away from the first arcuate groove 41. After the cover 2 is mounted on the base 1, the second arcuate groove 22 is aligned with the sensor body 100, thereby clamping the sensor body 100 between the support frame 4 and the support portion 21. This improves the stability of the sensor body 100 within the accommodating cavity 11 and prevents the sensor body 100 from falling off the support frame 4 when the shaft speed sensor protection device is subjected to external forces.

[0030] like Figure 3 and Figure 4 As shown, in this embodiment, flexible pads are respectively provided in the first arcuate groove 41 and the second arcuate groove 22, and the flexible pads are in contact with the outer peripheral wall of the sensor body 100. The flexible pads are respectively provided in the first arcuate groove 41 and the second arcuate groove 22 to cover the contact surface of the support frame 4 and the sensor body 100 and the contact surface of the support portion 21 and the sensor body 100, thereby preventing the sensor body 100 from colliding with the support frame 4 and / or the support portion 21 and causing damage to the sensor body 100.

[0031] Please refer to Figure 2 and Figure 3 The shaft speed sensor protection device further includes a first end cap 6. The base 1 and the cover 2 form a first cylindrical body 14 surrounding the first through hole 12. A first threaded portion 15 is provided on the outer peripheral wall of the first cylindrical body 14, and the first end cap 6 has a first threaded hole 61 that cooperates with the first threaded portion 15. After the cover 2 and the base 1 are assembled, the base 1 and the cover 2 form the first cylindrical body 14. At this time, the first threaded hole 61 cooperates with the first threaded portion 15 to allow the first end cap 6 to be installed on the base 1 and the cover 2. The first end cap 6 locks the cover 2 in position on the base 1. The first cylindrical body 14 surrounds the first through hole 12 to protect the head 101 of the sensor body 100, thereby further improving the protective effect of the shaft speed sensor protection device.

[0032] Specifically, the shaft speed sensor protection device further includes a second end cap 7. The base 1 and the cover 2 form a second cylindrical body 16 that surrounds the second through hole 12. The outer peripheral wall of the second cylindrical body 16 is provided with a second threaded portion 17, and the second end cap 7 has a second threaded hole 71 that cooperates with the second threaded portion 17. The second cylindrical body 16 formed by the cover 2 and the base 1 guides the wire 102 of the sensor body 100 out of the accommodating cavity 11. The second threaded hole 71 cooperates with the second threaded portion 17 to secure the relative position of the cover 2 and the base 1, ensuring a secure connection between the cover 2 and the base 1, thereby improving the structural stability of the shaft speed sensor protection device.

[0033] like Figure 3 and Figure 4 As shown, the base 1 is provided with a positioning hole 18, and the cover 2 is provided with a positioning pin 23 that cooperates with the positioning hole 18. When the cover 2 is mounted on the base 1, the positioning pin 23 is inserted into the positioning hole 18 to align the cover 2 with the base 1, so that the cover 2 closes the opening of the accommodating cavity 11 while ensuring that the cover 2 and the base 1 form a complete first cylindrical body 14 and second cylindrical body 16.

[0034] Please refer to Figure 1 and Figure 3The base 1 is provided with a plurality of mounting holes 19 at intervals, each of which is located near an edge of the base 1. The base 1 can be fixed in its working position by inserting screws or other fasteners into the mounting holes 19, thereby facilitating installation of the shaft speed sensor protection device and ensuring that the shaft speed sensor protection device remains stable in its working position.

[0035] In detail, straps 8 are rotatably connected to opposite sides of the base 1, one of which is provided with a first buckle and the other is provided with a second buckle that cooperates with the first buckle. By tying the straps 8 to the working position, the shaft speed sensor protection device can be installed on an uneven working position such as a curved surface. The first buckle and the second buckle cooperate to fix the shaft speed sensor protection device to prevent it from falling from the working position. The first buckle and the second buckle can be equipped with matching Velcro to facilitate installation or removal of the shaft speed sensor protection device to the working position.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A shaft speed sensor protection device, comprising a sensor body, characterized in that: The cam is secured to a position 56° with respect to the first and second ends of the cam, and the cam is secured to a position 56° with respect to the first and second ends of the cam.

2. The rotating shaft speed sensor protection device according to claim 1, characterized in that: The base is further provided with a bottom plate, which covers an end of the accommodating cavity away from the cover body, and a side of the buffer pad away from the support frame is in contact with the bottom plate.

3. The rotating shaft speed sensor protection device according to claim 1, characterized in that: The support frame is provided with a first arc-shaped groove, and the first arc-shaped groove is in contact with the outer peripheral wall of the sensor body.

4. A rotating shaft speed sensor protection device according to claim 3, characterized in that: The cover body is provided with a supporting portion, the supporting portion has a second arc-shaped groove, and the second arc-shaped groove is in contact with a side of the sensor body away from the first arc-shaped groove.

5. The rotating shaft speed sensor protection device according to claim 4, characterized in that: Flexible pads are respectively provided in the first arc-shaped groove and the second arc-shaped groove, and the flexible pads are in contact with the outer peripheral wall of the sensor body.

6. The rotating shaft speed sensor protection device according to claim 1, characterized in that: It also includes a first end cover, the base and the cover body form a first cylinder surrounding the first through hole, a first threaded portion is provided on the outer peripheral wall of the first cylinder, and the first end cover has a first threaded hole matching the first threaded portion.

7. The rotating shaft speed sensor protection device according to claim 1, characterized in that: It also includes a second end cover, the base and the cover body form a second cylinder body surrounding the second through hole, a second threaded portion is provided on the outer peripheral wall of the second cylinder body, and the second end cover has a second threaded hole matching the second threaded portion.

8. The rotating shaft speed sensor protection device according to claim 1, characterized in that: The base is provided with a positioning hole, and the cover is provided with a positioning pin matched with the positioning hole.

9. The rotating shaft speed sensor protection device according to claim 1, characterized in that: A plurality of mounting holes are arranged at intervals on the base, and the mounting holes are respectively arranged close to the edge of the base.

10. The rotating shaft speed sensor protection device according to claim 1, characterized in that: Two opposite sides of the base are rotatably connected with straps, one of the straps is provided with a first buckle and the other strap is provided with a second buckle that matches the first buckle.

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