An ultrasonic sensor

Abstract

The present invention relates to the technical field of ultrasonic sensors, and specifically relates to an ultrasonic sensor, which includes a sensor body, a mounting frame and a clamping mechanism. The sensor body is arranged inside the mounting frame, and clamping mechanisms are arranged at positions near the front and rear ends of the inner surface of the mounting frame. The clamping mechanism includes a bottom plate, a first threaded rod, a movable plate, teeth, a gear, a first slider, a second slider and a clamping plate. The bottom plate is arranged inside the mounting frame, and first chutes are opened at the joints between the two sides of the inner surface of the mounting frame and the bottom plate. In the present invention, by setting the clamping mechanism and the second threaded rod, the distance between the two clamping plates can be adjusted, so as to clamp and fix sensor bodies of different specifications. At the same time, the angle of the sensor body can be adjusted integrally by adjusting the two bottom plates, so that while facilitating the disassembly and installation of the sensor body, the installation range of the device is increased, and the stability of the sensor body is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic sensors, and specifically to an ultrasonic sensor. Background Art

[0002] Ultrasonic sensors are widely used, resulting in different shapes of sensors used in different fields. The ultrasonic sensor installed on a large vehicle for vehicle reverse is mainly used for anti-collision when the vehicle is reversing. Its ultrasonic sensor is usually installed at the rear end of the large vehicle by screws.

[0003] The existing patent (Publication No.: CN211477178U) is an ultrasonic sensor that is convenient to install, including an installation top plate. A mounting sleeve is fixed to the bottom of the installation top plate, and an ultrasonic sensor body is installed inside the mounting sleeve. Clamping components for clamping the ultrasonic sensor body are installed on the outer sides of the mounting sleeve, and a sorting member for wire storage is installed at the tail end of the mounting sleeve. For this ultrasonic sensor that is convenient to install, through the cooperation and adjustment of the clamping components on both sides of the lower end of the mounting sleeve, the ultrasonic sensor body inserted into the mounting sleeve can be clamped and positioned. After the installation top plate is fixed to the rear end of the large vehicle by screws, when the ultrasonic sensor is overhauled later, there is no need to additionally turn the screws. Just rotate the turntable to loosen the arc-shaped clamping plate, and the disassembly and installation of the ultrasonic sensor body can be achieved, and the overhaul is very convenient.

[0004] In the above patent, by setting the clamping components, while being able to achieve the disassembly and installation of the wave sensor, the convenience of overhaul is improved. However, in the specific use process, there are certain range regulations for the installation position of the sensor. At the same time, when the sensor is installed at the same position of different vehicles, its sensing range will deviate. It is impossible to clamp and fix different specifications of sensors while adjusting their angles, thus limiting the installation range of the ultrasonic sensor body.

[0005] Therefore, an ultrasonic sensor is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide an ultrasonic sensor. By setting a clamping mechanism and a second threaded rod, the distance between two clamping plates can be adjusted, so as to clamp and fix sensor bodies of different specifications. At the same time, the angle of the sensor body can be adjusted as a whole by adjusting two bottom plates, so that while being convenient for the disassembly and installation of the sensor body, the installation range of the device is increased, and the stability of the sensor body is ensured, so as to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: An ultrasonic sensor, comprising a sensor body, a mounting frame and a clamping mechanism, wherein the sensor body is disposed inside the mounting frame, and clamping mechanisms are disposed at positions near the front and rear ends of the inner surface of the mounting frame;

[0008] The clamping mechanism includes a bottom plate, a first threaded rod, a movable plate, teeth, a gear, a first slider, a second slider and a clamping plate. The bottom plate is disposed inside the mounting frame, and first chutes are opened at the joints between the two sides of the inner surface of the mounting frame and the bottom plate. A first slider is slidably connected inside the first chute, and the first slider is fixedly connected to the bottom plate. A second chute is opened at a position near the middle of the upper outer surface of the bottom plate, and second sliders are slidably connected to positions near the two sides of the inner surface of the second chute. A bearing is disposed on one side of the inner surface of the second chute, and a first threaded rod is fixedly connected inside the bearing. One end of the first threaded rod away from the bearing sequentially penetrates through two groups of second sliders and is threadedly connected thereto, and the thread directions of the first threaded rod near both ends of the outer surface are opposite. The clamping plates correspond to the second sliders one by one, and the clamping plates are connected to the upper outer surface of the second sliders through telescopic rods. One end of the outer surface of the first threaded rod away from the gear is fixedly connected with a spring coil, one end of the spring coil is fixedly connected to the first threaded rod, and the other end is fixedly connected with a steel wire rope. The sensor body is disposed between several groups of clamping plates;

[0009] A notch is opened at a position near one side of the front outer surface of the mounting frame, and first mounting grooves are opened at positions near the front and rear ends of the bottom end of the inner surface of the notch. A first mounting block is slidably connected inside the first mounting groove, and a movable plate is fixedly connected between the two groups of first mounting blocks. Several groups of teeth are fixedly connected to the upper outer surface of the movable plate, and gears are meshed with the upper outer surface of the teeth near the positions of the two groups of clamping mechanisms. A rectangular hole is opened at the joint between the bottom end of the inner surface of the mounting frame and the gear, and a movable rod is movably connected inside the inner surface of the rectangular hole. The gear is fixedly connected to the outer surface of the movable rod. One end of the steel wire rope is fixedly connected to the spring coil, and the other end is fixedly connected to the movable rod. A limiting plate is fixedly connected to the front outer surface of the movable plate, and first threaded holes are opened at positions near the two sides of the front outer surface of the limiting plate. Bolts are threadedly connected inside the first threaded holes.

[0010] By adopting the above technical solution, by setting two sets of clamping mechanisms, the stability of the sensor body can be effectively ensured. At the same time, the distance between the clamping plates of the two sets of clamping mechanisms can be adjusted, so as to fix the sensor bodies of different specifications. During the installation process, the installer places the sensor body between the two clamping plates, and then pulls the limiting plate to drive the movable plate and the teeth on its surface to move inside the notch. Since the first teeth are meshed with the gear, during the movement of the movable plate, the gear drives the movable rod to rotate forward, and at the same time, the steel wire rope on its surface is wound up, driving the first threaded rod to rotate forward. Since the first threaded rod is threadedly connected with the second slider and the thread directions at the positions near both ends of the outer surface of the first threaded rod are opposite, the two corresponding second sliders drive their corresponding clamping plates to move closer to each other, so as to fix the sensor body. Then, bolts are used to penetrate the first threaded holes to fix the position of the movable plate, so as to ensure the stability of the clamping plate during the clamping process.

[0011] Preferably, on one side of the front outer surface of the two bottom plates away from the limiting plate, second threaded holes are opened, and a second threaded rod is threadedly connected inside the second threaded holes. The second threaded rod is threadedly connected with both bottom plates and is rotatably connected with the installation frame.

[0012] By adopting the above technical solution, during the installation process, the installer rotates the second threaded rod forward. Since the second threaded rod is threadedly connected with both bottom plates, during the forward rotation of the second threaded rod, the two bottom plates drive the first slider to move in the same direction along the first chute, so that the positions of the two bottom plates inside the installation frame can be adjusted, improving the application range of the device.

[0013] Preferably, a fixed shaft is fixedly connected to one end of the outer surface of the clamping plate away from the sensor body, and one end of the outer surface of the fixed shaft away from the clamping plate penetrates into the installation frame and is movably connected thereto. A limiting ring is fixedly connected to one end of the outer surface of the fixed shaft away from the clamping plate. A rotating groove is opened at the connection between the inner surface of the installation frame and the fixed shaft, and a limiting groove is opened at the connection between the inner surface of the rotating groove and the limiting ring. The cross-sectional area of the second slider is smaller than the cross-sectional area of the second chute.

[0014] By adopting the above technical solution, during use, the installer adjusts the distance between the two clamping plates by pulling the movable plate, so as to fix the sensor body of different specifications. At the same time, by setting the second threaded rod, the fixed shaft and the limiting ring to cooperate with the first threaded rod and the second slider, it is possible to adjust the angle of the sensor body as a whole by adjusting the two bottom plates while clamping and fixing the sensor body of different specifications, so as to facilitate the disassembly and installation of the sensor body while increasing the installation range of the device. During the forward rotation of the second threaded rod, the two bottom plates drive the first slider to move in the same direction along the first chute. At the same time, since the position of the fixed shaft is relatively fixed, it cannot move along the direction of the first chute. Therefore, during the movement of the bottom plate driving the first slider, the clamping plate drives the fixed shaft and the limiting ring to rotate, so as to adjust the overall angle of the sensor body while ensuring the stability of the sensor body. At the same time, during this process, the cross-sectional area of the second slider is smaller than the cross-sectional area of the second chute, so a certain rotation range is provided for the second slider, enabling the second slider to rotate forward around the first threaded rod inside the second chute and move towards each other to clamp the sensor body. And when adjusting the distance between the two clamping plates, the installer holds the clamping plate by hand to prevent it from rotating synchronously with the second threaded rod.

[0015] Preferably, a cavity is formed inside the clamping plate, and a number of buffer mechanisms are arranged inside the cavity. The number of buffer mechanisms are evenly distributed in a ring with the center of the clamping plate as the center of the circle. The buffer mechanism includes a fixed rod, a first spring and a connecting cylinder. One end of the fixed rod is fixedly connected to the cavity, and the other end penetrates into the inside of the connecting cylinder. The connecting cylinder is movably connected to the inside of the clamping plate, and a first spring is arranged inside the connecting cylinder. One end of the first spring is fixedly connected to the connecting cylinder, and the other end is fixedly connected to the fixed rod. The cross-section of the fixed rod is T-shaped. An arc-shaped plate is fixedly connected to the outer surface of the connecting cylinder away from the fixed rod, and a rubber pad is arranged on the side of the outer surface of the arc-shaped plate away from the connecting cylinder.

[0016] By adopting the above technical solution, during use, by setting the second threaded rod, fixed shaft, and limit ring to cooperate with the first threaded rod and the second slider, it is possible to clamp and fix sensor bodies of different specifications, and at the same time, adjust the angle of the sensor body as a whole by adjusting the two groups of bottom plates. However, the propagation of ultrasonic waves is directional. During the detection process of the sensor body, only the vibration in front of the reflection end is required. When the vehicle is driving, the body will shake, which is likely to affect the accuracy during the use of the sensor body. At the same time, affected by the surrounding vibration, the sensor body will collide with other components, causing wear on its surface and even affecting its normal use. Therefore, by setting the arc plate, the first spring, and the connecting cylinder to cooperate with the clamping plate, it is possible to effectively fix the sensor body by using the clamping plate, reduce the influence of external vibration on the stability of the sensor body, and reduce the probability of hard collision with external components, ensuring the service life of the device. During use, when external vibration occurs, the sensor body squeezes the arc plate, which pushes the connecting cylinder to squeeze the first spring, and the high elasticity of the first spring effectively reduces the influence of external vibration on the sensor body.

[0017] Preferably, a buffer assembly is provided between two adjacent groups of the connecting cylinders. The buffer assembly includes a second spring, an airbag, and a connecting plate. Each group of the connecting cylinders corresponds to two connecting plates. The two connecting plates are respectively hinged to one side of the outer surface of the connecting cylinder close to the fixed rod, and the other end of the connecting plate is fixedly connected to the second spring.

[0018] By adopting the above technical solution, during use, the high elasticity of the first spring effectively reduces the influence of external vibration on the sensor body. At the same time, by setting the buffer assembly to cooperate with the first spring, the buffering effect of the device is effectively improved. Since the connecting plate is hinged to the connecting cylinder, during the process of the first connecting cylinder squeezing the first spring along the fixed rod, the connecting cylinder pushes the connecting plate to squeeze the second spring, thereby using the cooperation of the first spring and the second spring to strengthen the buffering effect of the device.

[0019] Preferably, the outer surface of the second spring is wrapped with an airbag, and a connecting pipe is provided on the inner surface and the outer surface of the airbag near the middle. One end of the connecting pipe penetrates into the interior of the airbag, and the other end penetrates into the outer surface of the clamping plate.

[0020] By adopting the above technical solution, during use, when the first connecting cylinder squeezes the first spring along the fixed rod, the connecting cylinder pushes the connecting plate to squeeze the second spring, thereby using the first spring and the second spring to cooperate with each other to enhance the buffering effect of the device. At the same time, by setting the airbag and the connecting pipe, during the process of the connecting plate squeezing the second spring, the airbag is repeatedly stretched and squeezed at the same time, thereby driving the air flow inside the airbag to blow the dust on the surface of the sensor body through the connecting pipe, so as to ensure the cleanliness of the surface of the sensor body, reduce the probability of the corrosive substances contained in the dust corroding the surface of the sensor body, and at the same time avoid the dust on its surface contaminating the hands of the installation personnel during the maintenance process of the device, which has an impact on the health of the installation personnel.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] By setting the clamping mechanism and the second threaded rod, the distance between the two clamping plates can be adjusted, so as to clamp and fix the sensor body of different specifications. At the same time, the angle of the sensor body can be adjusted as a whole by adjusting the two bottom plates, so that while facilitating the disassembly and installation of the sensor body, the installation range of the device is improved, and the stability of the sensor body is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural schematic diagram of the present invention;

[0024] Figure 2 is a cross-sectional view of the front view of the present invention;

[0025] Figure 3 is of the present invention Figure 2 enlarged view of A;

[0026] Figure 4 is of the present invention Figure 2 enlarged view of B;

[0027] Figure 5 is a cross-sectional view of the side view of the present invention;

[0028] Figure 6 is of the present invention Figure 5 enlarged view of C;

[0029] Figure 7 is of the present invention Figure 5 enlarged view of D;

[0030] Figure 8 is a structural view of the second slider and the second sliding groove of the present invention.

[0031] In the figure: 1. Sensor body; 2. Mounting frame; 21. First chute; 22. Notch; 23. First mounting groove; 24. First mounting block; 25. Rectangular hole; 26. Movable rod; 3. Clamping mechanism; 31. Base plate; 311. Second chute; 312. Bearing; 32. First threaded rod; 321. Spring coil; 322. Steel wire rope; 33. Movable plate; 331. Limiting plate; 332. Second threaded hole; 333. Second threaded rod; 34. Teeth; 35. Gear; 36. First slider; 37. Second slider; 38. Clamping plate; 381. Fixed shaft; 382. Limiting ring; 383. Rotating groove; 384. Cavity; 39. Buffer mechanism; 391. Fixed rod; 392. Connecting cylinder; 393. First spring; 394. Arc-shaped plate; 395. Rubber pad; 4. Buffer assembly; 41. Second spring; 42. Airbag; 43. Connecting plate; 44. Connecting pipe. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 to 8 , the present invention provides a technical solution:

[0034] An ultrasonic sensor, as Figures 1 to 7 shown, includes a sensor body 1, a mounting frame 2 and a clamping mechanism 3. The sensor body 1 is arranged inside the mounting frame 2, and clamping mechanisms 3 are arranged at positions on the inner surface of the mounting frame 2 near the front and rear ends.

[0035] The clamping mechanism 3 includes a bottom plate 31, a first threaded rod 32, a movable plate 33, teeth 34, a gear 35, a first slider 36, a second slider 37, and a clamping plate 38. The bottom plate 31 is disposed inside the mounting frame 2, and first chutes 21 are formed at the joints between both sides of the inner surface of the mounting frame 2 and the bottom plate 31. A first slider 36 is slidably connected inside the first chute 21, and the first slider 36 is fixedly connected to the bottom plate 31. A second chute 311 is formed at a position near the middle on the upper outer surface of the bottom plate 31, and second sliders 37 are slidably connected to positions near both sides of the inner surface of the second chute 311. A bearing 312 is disposed on one side of the inner surface of the second chute 311, and a first threaded rod 32 is fixedly connected inside the bearing 312. One end of the first threaded rod 32 away from the bearing 312 sequentially penetrates through the two groups of second sliders 37 and is threadedly connected thereto, and the thread directions of the first threaded rod 32 near both ends of the outer surface are opposite. The clamping plates 38 correspond to the second sliders 37 one by one, and the clamping plates 38 are connected to the upper outer surface of the second sliders 37 through telescopic rods. One end of the outer surface of the first threaded rod 32 away from the gear 35 is fixedly connected with a spring coil 321, one end of the spring coil 321 is fixedly connected to the first threaded rod 32, and the other end is fixedly connected with a steel wire rope 322. The sensor body 1 is disposed between several groups of clamping plates 38;

[0036] A notch 22 is formed at a position near one side on the front outer surface of the mounting frame 2, and first mounting grooves 23 are formed at positions near the front and rear ends of the bottom end of the inner surface of the notch 22. A first mounting block 24 is slidably connected inside the first mounting groove 23, and a movable plate 33 is fixedly connected between the two groups of first mounting blocks 24. Several groups of teeth 34 are fixedly connected to the upper outer surface of the movable plate 33, and gears 35 are engaged with the upper outer surface of the teeth 34 near the positions of the two groups of clamping mechanisms 3. A rectangular hole 25 is formed at the joint between the bottom end of the inner surface of the mounting frame 2 and the gear 35, and a movable rod 26 is movably connected inside the inner surface of the rectangular hole 25. The gear 35 is fixedly connected to the outer surface of the movable rod 26. One end of the steel wire rope 322 is fixedly connected to the spring coil 321, and the other end is fixedly connected to the movable rod 26. A limiting plate 331 is fixedly connected to the front outer surface of the movable plate 33, and first threaded holes are formed at positions near both sides of the front outer surface of the limiting plate 331, and bolts are threadedly connected inside the first threaded holes.

[0037] By adopting the above technical solution, by setting two sets of clamping mechanisms 3, the stability of the sensor body 1 can be effectively ensured, and at the same time, the distance between the clamping plates 38 of the two sets of clamping mechanisms 3 can be adjusted, so as to fix the sensor bodies 1 of different specifications. During the installation process, the installer places the sensor body 1 between the two clamping plates 38, and then pulls the limiting plate 331 to drive the movable plate 33 and the teeth 34 on its surface to move inside the notch 22. Since the first teeth 34 are meshed with the gear 35, during the movement of the movable plate 33, the gear 35 drives the movable rod 26 to rotate forward, and at the same time, the steel wire rope 322 on its surface is wound up, driving the first threaded rod 32 to rotate forward. Since the first threaded rod 32 is threadedly connected with the second slider 37, and the thread directions of the outer surface of the first threaded rod 32 near both ends are opposite, the two corresponding second sliders 37 drive their corresponding clamping plates 38 to move closer to each other, so as to fix the sensor body 1, and then use bolts to penetrate the first threaded hole to fix the position of the movable plate 33, so as to ensure the stability of the clamping plate 38 during the clamping process.

[0038] As an embodiment of the present invention, as Figure 1 With Figure 2 shown, on the outer surface of the front ends of the two sets of bottom plates 31, a second threaded hole 332 is opened on the side far from the limiting plate 331, and a second threaded rod 333 is threadedly connected inside the second threaded hole 332. The second threaded rod 333 is threadedly connected with both sets of bottom plates 31, and the second threaded rod 333 is rotationally connected with the installation frame 2.

[0039] By adopting the above technical solution, during the installation process, the installer rotates the second threaded rod 333 forward. Since the second threaded rod 333 is threadedly connected with both sets of bottom plates 31, during the forward rotation of the second threaded rod 333, the two sets of bottom plates 31 drive the first slider 36 to move in the same direction along the first chute 21, so as to be able to adjust the positions of the two sets of bottom plates 31 inside the installation frame 2 and improve the application range of the device.

[0040] As an embodiment of the present invention, as Figure 2 With Figure 8 shown, a fixed shaft 381 is fixedly connected to the outer surface of the end of the clamping plate 38 far from the sensor body 1, and the end of the outer surface of the fixed shaft 381 far from the clamping plate 38 penetrates into the installation frame 2 and is movably connected thereto. A limiting ring 382 is fixedly connected to the end of the outer surface of the fixed shaft 381 far from the clamping plate 38. A rotating groove 383 is opened at the connection between the inner surface of the installation frame 2 and the fixed shaft 381, and a limiting groove is opened at the connection between the inner surface of the rotating groove 383 and the limiting ring 382. The cross-sectional area of the second slider 37 is smaller than the cross-sectional area of the second chute 311.

[0041] By adopting the above technical solution, during use, the installer adjusts the distance between the two sets of clamping plates 38 by pulling the movable plate 33, thereby fixing the sensor bodies 1 of different specifications. At the same time, by setting the second threaded rod 333, the fixed shaft 381, and the limiting ring 382 to cooperate with the first threaded rod 32 and the second slider 37, it is possible to adjust the angle of the sensor body 1 as a whole by adjusting the two sets of bottom plates 31 while clamping and fixing the sensor bodies 1 of different specifications. Thus, while facilitating the disassembly and installation of the sensor body 1, the installation range of the device is increased. During the forward rotation of the second threaded rod 333, the two sets of bottom plates 31 drive the first slider 36 to move in the same direction along the first chute 21. At the same time, since the position of the fixed shaft 381 is relatively fixed, it cannot move along the direction of the first chute 21. Therefore, during the movement of the bottom plate 31 driving the first slider 36, the clamping plate 38 drives the fixed shaft 381 and the limiting ring 382 to rotate, thereby adjusting the overall angle of the sensor body 1 while ensuring the stability of the sensor body 1. At the same time, during this process, the cross-sectional area of the second slider 37 is smaller than the cross-sectional area of the second chute 311. Therefore, a certain rotation range is provided for the second slider 37, enabling the second slider 37 to rotate forward around the first threaded rod 32 and move towards each other inside the second chute 311 to clamp the sensor body 1. And when adjusting the distance between the two sets of clamping plates 38, the installer holds the clamping plate 38 by hand to prevent it from rotating synchronously with the second threaded rod 32.

[0042] As an embodiment of the present invention, as Figures 2 to 5 shown, a cavity 384 is formed inside the clamping plate 38, and several sets of buffer mechanisms 39 are arranged inside the cavity 384. The several sets of buffer mechanisms 39 are annularly and equidistantly distributed with the center of the clamping plate 38 as the center of the circle. The buffer mechanism 39 includes a fixed rod 391, a first spring 393, and a connecting cylinder 392. One end of the fixed rod 391 is fixedly connected to the cavity 384, and the other end penetrates into the inside of the connecting cylinder 392. The connecting cylinder 392 is movably connected inside the clamping plate 38, and a first spring 393 is arranged inside the connecting cylinder 392. One end of the first spring 393 is fixedly connected to the connecting cylinder 392, and the other end is fixedly connected to the fixed rod 391. And the cross-section of the fixed rod 391 is in a T shape. An arc-shaped plate 394 is fixedly connected to the outer surface of the connecting cylinder 392 away from the fixed rod 391, and a rubber pad 395 is arranged on the side of the outer surface of the arc-shaped plate 394 away from the connecting cylinder 392.

[0043] By adopting the above technical solution, during use, by setting the second threaded rod 333, the fixed shaft 381, and the limit ring 382 to cooperate with the first threaded rod 32 and the second slider 37, it is possible to clamp and fix the sensor body 1 of different specifications while adjusting the angle of the sensor body 1 as a whole by adjusting the two groups of bottom plates 31. However, the propagation of ultrasonic waves is directional. During the detection process of the sensor body 1, only the vibration in front of the reflection end is required. During the driving process of the vehicle, the body will shake, which is likely to affect the accuracy of the sensor body 1 during use. At the same time, affected by the surrounding vibration, the sensor body 1 will collide with other components, resulting in wear on its surface and even affecting its normal use. Therefore, by setting the arc plate 394, the first spring 393, and the connecting cylinder 392 to cooperate with the clamping plate 38, it is possible to effectively fix the sensor body 1 by using the clamping plate 38 while reducing the influence of external vibration on the stability of the sensor body 1 and reducing the probability of hard collision with external components, ensuring the service life of the device. During use, when external vibration occurs, the sensor body 1 presses the arc plate 394 to push the connecting cylinder 392 to press the first spring 393, and the high elasticity of the first spring 393 effectively reduces the influence of external vibration on the sensor body 1.

[0044] As an embodiment of the present invention, as Figures 2 to 5 shown, a buffer assembly 4 is provided between two adjacent groups of the connecting cylinders 392, and the buffer assembly 4 includes a second spring 41, an airbag 42, and a connecting plate 43. Each group of the connecting cylinders 392 corresponds to two connecting plates 43. The two connecting plates 43 are respectively hinged to one side of the outer surface of the connecting cylinder 392 close to the fixed rod 391, and the other end of the connecting plate 43 is fixedly connected to the second spring 41.

[0045] By adopting the above technical solution, during use, the high elasticity of the first spring 393 effectively reduces the influence of external vibration on the sensor body 1. At the same time, by setting the buffer assembly 4 to cooperate with the first spring 393, the buffering effect of the device is effectively improved. Since the connecting plate 43 is hinged to the connecting cylinder 392, during the process of the first connecting cylinder 392 pressing the first spring 393 along the fixed rod 391, the connecting cylinder 392 pushes the connecting plate 43 to press the second spring 41, thereby using the cooperation of the first spring 393 and the second spring 41 to enhance the buffering effect of the device.

[0046] As an embodiment of the present invention, as Figure 4 shown, the outer surface of the second spring 41 is wrapped with an airbag 42, and a connecting pipe 44 is provided on the inner surface of the airbag 42 near the middle. One end of the connecting pipe 44 penetrates into the interior of the airbag 42, and the other end penetrates to the outer surface of the clamping plate 38.

[0047] By adopting the above technical solution, during use, when the first connecting cylinder 392 squeezes the first spring 393 along the fixed rod 391, the connecting cylinder 392 pushes the connecting plate 43 to squeeze the second spring 41, thereby using the mutual cooperation of the first spring 393 and the second spring 41 to enhance the buffering effect of the device. At the same time, by setting the airbag 42 and the connecting pipe 44, during the process of the connecting plate 43 squeezing the second spring 41, the airbag 42 is repeatedly stretched and squeezed at the same time, thereby driving the airflow inside the airbag 42 to blow the dust on the surface of the sensor body 1 through the connecting pipe 44, so as to ensure the cleanliness of the surface of the sensor body 1, reduce the probability of the corrosive substances contained in the dust corroding the surface of the sensor body 1, and at the same time avoid the dust on its surface contaminating the hands of the installation personnel during the maintenance process of the device, which may affect the health of the installation personnel.

[0048] Working principle: During the installation process, the installer places the sensor body 1 between two groups of clamping plates 38, and then pulls the limit plate 331 to drive the movable plate 33 and the teeth 34 on its surface to move inside the notch 22. Since the first teeth 34 are meshed with the gear 35, during the movement of the movable plate 33, the gear 35 drives the movable rod 26 to rotate forward, and at the same time, the steel wire rope 322 on its surface is wound up, driving the first threaded rod 32 to rotate forward. Since the first threaded rod 32 is threadedly connected to the second slider 37 and the thread directions at the positions near both ends of the outer surface of the first threaded rod 32 are opposite, the two corresponding second sliders 37 drive their corresponding clamping plates 38 to move towards each other, thereby fixing the sensor body 1. Then, bolts are used to penetrate the first threaded holes to fix the position of the movable plate 33, thereby ensuring the stability of the clamping plate 38 during the clamping process. The installer rotates the second threaded rod 333 forward. Since the second threaded rod 333 is threadedly connected to both groups of bottom plates 31, during the forward rotation of the second threaded rod 333, the two groups of bottom plates 31 drive the first slider 36 to move in the same direction along the first chute 21. During the forward rotation of the second threaded rod 333, the two groups of bottom plates 31 drive the first slider 36 to move in the same direction along the first chute 21. At the same time, since the position of the fixed shaft 381 is relatively fixed and cannot move along the direction of the first chute 21, during the movement of the bottom plate 31 driving the first slider 36, the clamping plate 38 drives the fixed shaft 381 and the limit ring 382 to rotate, thereby adjusting the overall angle of the sensor body 1 while ensuring the stability of the sensor body 1. At the same time, during this process, the cross-sectional area of the second slider 37 is smaller than the cross-sectional area of the second chute 311, so a certain rotation range is provided for the second slider 37, enabling the second slider 37 to rotate forward around the first threaded rod 32 and move towards each other inside the second chute 311 to clamp the sensor body 1. And when adjusting the distance between the two groups of clamping plates 38, the installer holds the clamping plate 38 by hand to prevent it from rotating synchronously with the second threaded rod 32.

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic sensor, comprising a sensor body (1), a mounting frame (2) and a clamping mechanism (3), characterized in that: the sensor body (1) is arranged inside the mounting frame (2), and clamping mechanisms (3) are arranged at positions on the inner surface of the mounting frame (2) close to the front and rear ends; the clamping mechanism (3) includes a bottom plate (31), a first threaded rod (32), a movable plate (33), teeth (34), a gear (35), a first slider (36), a second slider (37) and a clamping plate (38). The bottom plate (31) is arranged inside the mounting frame (2), and first chutes (21) are opened at the joints between the two sides of the inner surface of the mounting frame (2) and the bottom plate (31). The first slider (36) is slidably connected inside the first chute (21), and the first slider (36) is fixedly connected to the bottom plate (31). A second chute (311) is opened at a position close to the middle on the upper outer surface of the bottom plate (31), and second sliders (37) are slidably connected to positions on the inner surface of the second chute (311) close to both sides. A bearing (312) is arranged on one side of the inner surface of the second chute (311), and a first threaded rod (32) is fixedly connected inside the bearing (312). One end of the first threaded rod (32) far from the bearing (312) sequentially penetrates through two groups of second sliders (37) and is threadedly connected thereto, and the thread directions of the first threaded rod (32) on the outer surface close to both ends are opposite. The clamping plates (38) correspond to the second sliders (37) one by one, and the clamping plates (38) are fixedly connected to the upper outer surfaces of the second sliders (37). One end of the first threaded rod (32) far from the gear (35) is fixedly connected with a spring coil (321), one end of the spring coil (321) is fixedly connected to the first threaded rod (32), and the other end is fixedly connected with a steel wire rope (322). The sensor body (1) is arranged between several groups of clamping plates (38); A notch (22) is provided at a position near one side of the front outer surface of the mounting frame (2), and first mounting grooves (23) are provided at positions near the front and rear ends of the bottom end of the inner surface of the notch (22). A first mounting block (24) is slidably connected to the inner surface of the first mounting groove (23), and a movable plate (33) is fixedly connected between the two groups of first mounting blocks (24). A plurality of groups of teeth (34) are fixedly connected to the upper outer surface of the movable plate (33), and gears (35) are engaged with the upper outer surface of the teeth (34) near the positions of the two clamping mechanisms (3). A rectangular hole (25) is provided at the connection position between the bottom end of the inner surface of the mounting frame (2) and the gear (35), and a movable rod (26) is movably connected to the inner surface of the rectangular hole (25). The gear (35) is fixedly connected to the outer surface of the movable rod (26). One end of the steel wire rope (322) is fixedly connected to the spring coil (321), and the other end is fixedly connected to the movable rod (26). A limiting plate (331) is fixedly connected to the front outer surface of the movable plate (33), and first threaded holes are provided near both sides of the front outer surface of the limiting plate (331). Bolts are threadedly connected to the interiors of the first threaded holes; Second threaded holes (332) are provided on the front outer surfaces of the two groups of bottom plates (31) on the side away from the limiting plate (331), and second threaded rods (333) are threadedly connected to the interiors of the second threaded holes (332). The second threaded rods (333) are threadedly connected to both groups of bottom plates (31), and the second threaded rods (333) are rotatably connected to the mounting frame (2); A fixed shaft (381) is fixedly connected to the end of the outer surface of the clamping plate (38) away from the sensor body (1), and the end of the outer surface of the fixed shaft (381) away from the clamping plate (38) penetrates into the interior of the mounting frame (2) and is movably connected thereto. A limiting ring (382) is fixedly connected to the end of the outer surface of the fixed shaft (381) away from the clamping plate (38). A rotating groove (383) is provided at the connection position between the inner surface of the mounting frame (2) and the fixed shaft (381), and a limiting groove is provided at the connection position between the inner surface of the rotating groove (383) and the limiting ring (382). The cross-sectional area of the second slider (37) is smaller than the cross-sectional area of the second chute (311).

2. An ultrasonic sensor according to claim 1, characterized in that: A cavity (384) is formed inside the clamping plate (38), and a number of buffer mechanisms (39) are arranged inside the cavity (384). The buffer mechanisms (39) are evenly distributed in a ring with the center of the clamping plate (38) as the center of the circle. The buffer mechanism (39) includes a fixed rod (391), a first spring (393) and a connecting cylinder (392). One end of the fixed rod (391) is fixedly connected to the cavity (384), and the other end penetrates into the inside of the connecting cylinder (392). The connecting cylinder (392) is movably connected to the inside of the clamping plate (38), and a first spring (393) is arranged inside the connecting cylinder (392). One end of the first spring (393) is fixedly connected to the connecting cylinder (392), and the other end is fixedly connected to the fixed rod (391). The cross-section of the fixed rod (391) is T-shaped. An arc-shaped plate (394) is fixedly connected to the outer surface of the connecting cylinder (392) away from the fixed rod (391), and a rubber pad (395) is arranged on the outer surface of the arc-shaped plate (394) away from the connecting cylinder (392).

3. An ultrasonic sensor according to claim 2, characterized in that: A buffer assembly (4) is arranged between two adjacent connecting cylinders (392). The buffer assembly (4) includes a second spring (41), an airbag (42) and a connecting plate (43). Each connecting cylinder (392) corresponds to two connecting plates (43). The two connecting plates (43) are respectively hinged to the outer surface of the connecting cylinder (392) close to one side of the fixed rod (391), and the other end of the connecting plate (43) is fixedly connected to the second spring (41).

4. An ultrasonic sensor according to claim 3, characterized in that: The outer surface of the second spring (41) is wrapped with an airbag (42). A connecting pipe (44) is arranged on the inner surface and the outer surface of the airbag (42) close to the middle. One end of the connecting pipe (44) penetrates into the inside of the airbag (42), and the other end penetrates into the outer surface of the clamping plate (38).

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