Ultrasonic household meter sensor structure

Abstract

The invention discloses an ultrasonic household meter sensor structure which comprises a fixing frame, the fixing frame is fixedly arranged on the outer side of a pipeline, sliding grooves are symmetrically formed in the upper side and the lower side of the fixing frame in the axial direction, sliding plates are arranged in the sliding grooves in a sliding mode, a connecting plate is fixedly connected between the two sliding plates, and a lead screw is rotationally arranged in the sliding groove close to the upper portion. The lead screw movably penetrates through the upper sliding plate, transverse plates are symmetrically arranged on the fixing frame relative to the two sides of the pipeline in the axial direction, a sensor is arranged on the outer side of the pipeline in an adhesion mode, limiting assemblies used for limiting the sensor are arranged on the transverse plates, and a driving assembly is arranged on one side of the sliding plate and is in transmission connection with the limiting assemblies. According to the ultrasonic user meter sensor structure, through cooperation of the lifting rod, the first spring and the limiting plate, the two sides of the sensor can be limited, and the stability of the sensor in the fixing process is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of sensors, in particular to an ultrasonic household meter sensor structure. Background Art

[0002] Ultrasonic household meter is a smart water meter that uses ultrasonic technology to measure water volume and transmit data remotely. It uses the difference in propagation time of ultrasonic signals in water flow to measure flow velocity and flow rate. It has the advantages of high precision, good stability, easy installation and maintenance, etc., so it has been widely used in water resource management. The sensors of ultrasonic household meter are divided into external clamp-on sensors, pipe segment sensors and insertion sensors. The external clamp-on sensors are directly installed on the outside of the pipe and transmit ultrasonic signals through the pipe wall. It does not require cutting the pipe or changing the original structure, and is easy to install.

[0003] The external clamp-on sensor includes the sensor body, a fixing structure, a connecting cable and other components. In the prior art, the fixing structure is usually a steel belt. During installation, it is necessary to first grind off the rust and other impurities in the sensor installation area of ​​the pipeline, then apply a coupling agent on one side of the sensor, and fit the side coated with the coupling agent to the polished area of ​​the pipeline. Subsequently, the steel belt is put on the outside of the sensor and gradually tightened so that the sensor and the pipeline can fit tightly together. However, in actual operation, the sensor and the pipeline are not firmly adhered during the tightening of the steel belt. The tightening of the steel belt may cause the sensor to move slightly, causing the orientation between the sensor and the pipeline to shift. If the installation orientation of the sensor is not parallel to the pipeline, it will affect the sensor's monitoring of the flow in the pipeline, resulting in inaccurate measurement data. Summary of the invention

[0004] The object of the present invention is to provide an ultrasonic household meter sensor structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultrasonic household meter sensor structure, comprising a fixing frame, the fixing frame is fixedly arranged on the outside of a pipe, the fixing frame is axially symmetrically provided with sliding grooves on the upper and lower sides, a sliding plate is slidably arranged in the sliding groove, a connecting plate is fixedly connected between the two sliding plates, a screw rod is rotatably arranged in the upper sliding groove, the screw rod movably penetrates the upper sliding plate, the fixing frame is axially symmetrically provided with cross plates on both sides relative to the pipe, a sensor is bonded to the outside of the pipe, a limiting assembly for limiting the sensor is arranged on the cross plate, a driving assembly is arranged on one side of the sliding plate, and the driving assembly is transmission-connected to the limiting assembly.

[0006] As a further solution of the present invention: the limit assembly includes a lifting rod, the lifting rod movably passes through the horizontal plate, the lifting rod is fixedly connected to a limit plate at one end close to the sensor, the width of the limit plate is smaller than the width of the sensor, the limit plate is movably abutted against the sensor, a first spring is fixedly arranged between the limit plate and the horizontal plate, and the first spring is movably sleeved on the outside of the lifting rod.

[0007] As a further solution of the present invention: the upper limit plate is axially symmetrically provided with movable grooves on both sides, an L-shaped plate is movably arranged in the movable groove, a reset spring is fixedly connected between one side of the L-shaped plate and the inner wall of the movable groove, and one side of the L-shaped plate is movably abutted against the sensor.

[0008] As a further solution of the present invention: the limiting plate is fixedly provided with a positioning plate on one side of the movable groove, a movable rod is movably provided on the positioning plate, a baffle is fixedly provided on the top of the movable rod, a second spring is fixedly provided between the baffle and the positioning plate, a transverse groove is opened on the L-shaped plate, a movable plate is movably provided in the transverse groove, and the movable plate is movably abutted against the baffle.

[0009] As a further solution of the present invention: a cross bar is movably arranged in the transverse groove, one end of the cross bar is fixedly connected to the movable plate, and one end of the cross bar away from the movable plate movably passes through the L-shaped plate, a third spring is fixedly arranged between the movable plate and the inner wall of the transverse groove, the third spring is movably sleeved on the outside of the cross bar, and notches are provided on one side of the baffle plate and the movable plate.

[0010] As a further solution of the present invention: the driving assembly includes a moving block, the moving block is provided with an inclined groove, the inclined groove is movably abutted against one end of the lifting rod away from the limiting plate, and the moving block is fixedly connected to the sliding plate.

[0011] As a further solution of the present invention: a limiting hole is provided on the top of the fixing frame, the limiting hole is communicated with the sliding groove, wherein a limiting ball is fixedly provided on one side of the upper sliding plate, and the limiting ball is movably engaged with the limiting hole.

[0012] As a further solution of the present invention: a fixing ring is fixedly arranged in the limiting hole, a push rod is movably arranged through the center of the fixing ring, one end of the push rod is movably abutted against the limiting ball, a circular ring is fixedly sleeved on the outer side of the push rod, and a fourth spring is fixedly arranged between the fixing ring and the circular ring.

[0013] As a further solution of the present invention: a strap is fixedly arranged between the two sliding plates, a square plate is axially symmetrically fixedly arranged on one side of the connecting plate, a rotating rod is movably arranged through the center of the square plate, a pressure plate is fixedly arranged at one end of the rotating rod, and the pressure plate is located on one side of the strap.

[0014] As a further solution of the present invention: a rotating plate is fixedly provided at one end of the rotating rod away from the pressure plate, a torsion spring is fixedly provided between the rotating rod and the square plate, a limiting rod is fixedly provided on one side of the fixing frame, and the limiting rod is movably abutted against the rotating plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The two sides of the sensor can be limited by the cooperation of the lifting rod, the first spring and the limit plate, ensuring the stability of the sensor during the fixing process; 2. Through the cooperation of the L-shaped plate, the return spring, the second spring, the moving plate and the positioning plate, the L-shaped plate can further limit the position of the sensor during the process of the limit plate limiting the position of the sensor; 3. Through the cooperation of the sliding plate, the limiting ball and the limiting hole, the sliding plate can no longer move after the limiting plate and the L-shaped plate limit the sensor, further ensuring the limiting effect of the sensor; 4. The pressure plate can press the straps together through the cooperation of the rotating plate, the limiting rod, the rotating rod and the pressure plate, so that the straps and the sensor are more closely connected, further ensuring the stability of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of part B in the middle.

[0019] Figure 4 It is a schematic diagram of the structure of the present invention from another perspective.

[0020] Figure 5 for Figure 4 Enlarged schematic diagram of part C in the middle.

[0021] Figure 6 It is a schematic diagram of the structure of the return spring in the present invention.

[0022] Figure 7 It is a schematic diagram of the positional relationship between the transverse groove and the transverse bar in the present invention.

[0023] Figure 8 It is a schematic diagram of the structure of the limiting ball in the present invention.

[0024] Fig. 9 It is a schematic structural diagram of the ejector rod in the present invention.

[0025] Fig.10 It is a schematic diagram of the structure of the torsion spring in the present invention.

[0026] In the figure: 1, fixed frame; 101, sliding groove; 102, limiting hole; 2, sliding plate; 3, connecting plate; 4, screw rod; 5, cross plate; 6, sensor; 7, limiting assembly; 71, lifting rod; 72, limiting plate; 721, moving groove; 73, first spring; 8, driving assembly; 81, moving block; 82, inclined groove; 9, L-shaped plate; 91, cross groove; 10, reset spring; 11, positioning plate; 12, movable rod; 13, baffle; 14, second spring; 15, moving plate; 16, cross bar; 17, third spring; 18, notch; 19, limiting ball; 20, fixing ring; 21, push rod; 22, circular ring; 23, fourth spring; 24, binding strap; 25, square plate; 26, rotating rod; 27, pressure plate; 28, rotating plate; 29, torsion spring; 30, limiting rod. DETAILED DESCRIPTION

[0027] See also Figure 1-Figure 10In an embodiment of the present invention, an ultrasonic household meter sensor structure includes a fixing frame 1, wherein the fixing frame 1 is fixedly arranged on the outside of a pipeline, and sliding grooves 101 are axially symmetrically provided on the upper and lower sides of the fixing frame 1, and sliding plates 2 are slidably arranged in the sliding grooves 101, and a connecting plate 3 is fixedly connected between the two sliding plates 2, wherein a screw rod 4 is rotatably arranged in the upper sliding groove 101, and the screw rod 4 movably penetrates the upper sliding plate 2, and the fixing frame 1 is axially symmetrically provided with cross plates 5 on both sides relative to the pipeline, and a sensor 6 is adhered to the outside of the pipeline, and a limiting component 7 for limiting the sensor 6 is provided on the cross plate 5, and a driving component 8 is provided on one side of the sliding plate 2, and the driving component 8 is drivingly connected to the limiting component 7; two adjacent areas on the same side of the pipeline are polished to polish off impurities such as rust on the surface, and the area of ​​the polishing area is larger than the area of ​​the surface of the sensor 6, and the number of sensors 6 is set to 2, and the number of sensors 6 is set to 2. It is placed in front and behind the pipeline, and a magnet is provided on the side where the sensor 6 contacts the pipeline, so that the sensor 6 is convenient to be adsorbed on the outside of the pipeline. A coupling agent is applied to the magnet of the sensor 6 and the surface is adsorbed together with the pipeline. The coupling agent is used to fill the tiny gap between the sensor 6 and the pipeline wall to optimize the transmission efficiency of the ultrasonic wave. After the sensor 6 is attached to the pipeline, the fixing frame 1 is fixedly installed on the outside of the pipeline and then the screw 4 is rotated. The rotation of the screw 4 drives one of the sliding plates 2 to move along the sliding plate 2 toward the side close to the sensor 6. The movement of one sliding plate 2 will drive the connecting plate 3 and the other sliding plate 2 to move synchronously. The movement of the two sliding plates 2 drives the driving component 8 to move, thereby driving the limit component 7 to work. The limit component 7 can ensure that the sensor 6 is in a parallel state with the pipeline. When the sensor 6 is subsequently limited and fixed, the sensor 6 will not be offset, thereby ensuring the accuracy of the sensor 6 in monitoring the flow in the pipeline. The cross plate 5 and the fixing frame 1 provide support.

[0028] See also Figure 1-Figure 2As shown, in this embodiment, preferably, the limit assembly 7 includes a lifting rod 71, the lifting rod 71 movably passes through the cross plate 5, the lifting rod 71 is fixedly connected to the limit plate 72 at one end close to the sensor 6, the width of the limit plate 72 is smaller than the width of the sensor 6, the limit plate 72 is movably abutted against the sensor 6, a first spring 73 is fixedly arranged between the limit plate 72 and the cross plate 5, the first spring 73 is movably sleeved on the outside of the lifting rod 71; in the initial state, the first spring 73 is in a normal telescopic state, and when the sensor 6 needs to be fixed, the first spring 73 is moved toward the direction close to the sensor 6. The lifting rod 71 is moved, and the movement of the lifting rod 71 drives the limit plate 72 to move in the direction close to the sensor 6 until one end of the limit plate 72 abuts against the sensor 6. The two limit plates 72 clamp the sensor 6 in the middle. In addition to ensuring the stability of the sensor 6 during the fixing process, the limit plate 72 can also provide support for the sensor 6 during subsequent use. The limit plate 72 will stretch the first spring 73 during the movement toward the sensor 6. When it is necessary to release the fixation of the limit plate 72 to the sensor 6, the force applied to the lifting rod 71 is removed, and the lifting rod 71 and the limit plate 72 will be driven back to the initial position under the action of the first spring 73.

[0029] See also Figure 1 , Figure 3 and Figure 6 As shown, in the present embodiment, preferably, movable grooves 721 are axially symmetrically provided on both sides of the upper limit plate 72, an L-shaped plate 9 is movably arranged in the movable groove 721, a reset spring 10 is fixedly connected between one side of the L-shaped plate 9 and the inner wall of the movable groove 721, and one side of the L-shaped plate 9 is movably abutted against the sensor 6; when the limit plate 72 moves toward the direction close to the sensor 6, it will drive the L-shaped plate 9 to move together, and when the limit plate 72 abuts against the sensor 6, the L-shaped plate 9 also abuts against the side of the sensor 6, and under the action of the reset spring 10, the L-shaped plate 9 can further limit and fix the sensor 6, thereby ensuring the stability of the sensor 6.

[0030] See also Figure 1-Figure 3 and Figure 6-Figure 7As shown, in this embodiment, preferably, the limiting plate 72 is fixedly provided with a positioning plate 11 on one side of the movable groove 721, and a movable rod 12 is movably provided on the positioning plate 11, and a baffle 13 is fixedly provided on the top of the movable rod 12, and a second spring 14 is fixedly provided between the baffle 13 and the positioning plate 11, and a transverse groove 91 is opened on the L-shaped plate 9, and a movable plate 15 is movably provided in the transverse groove 91, and the movable plate 15 is movably abutted against the baffle 13; in the initial state, the baffle 13 is abutted against the movable plate 15, and the reset spring 10 is in a stretched state. The plate 72 drives the positioning plate 11, the movable rod 12 and the L-shaped plate 9 to move together in the direction close to the sensor 6 until the bottom of the movable rod 12 abuts against one side of the sensor 6, thereby driving the movable rod 12 to move along the positioning plate 11 in the direction away from the sensor 6. In this process, the second spring 14 is stretched, and the upward movement of the movable rod 12 will drive the baffle 13 to move upward, so that the movable plate 15 loses the abutment of the baffle 13. Under the action of the reset spring 10, the L-shaped plate 9 will be driven to move in the direction close to the sensor 6, so that one side of the L-shaped plate 9 abuts against the sensor 6 more tightly, thereby ensuring the stability of the sensor 6.

[0031] See also Figure 6 and Figure 7As shown, in this embodiment, preferably, a cross bar 16 is movably provided in the transverse groove 91, one end of the cross bar 16 is fixedly connected to the movable plate 15, and the end of the cross bar 16 away from the movable plate 15 movably penetrates the L-shaped plate 9, and a third spring 17 is fixedly provided between the movable plate 15 and the inner wall of the transverse groove 91, and the third spring 17 is movably sleeved on the outer side of the cross bar 16, and a notch 18 is provided on one side of the baffle plate 13 and the movable plate 15; in the initial state, the baffle plate 13 and the movable plate 15 are abutted against each other on one side without the notch 18, so that the movable plate 15 can be ensured. The stability of the sensor 6 is improved. As the limit plate 72 moves in the direction close to the sensor 6, it can fit with one side of the sensor 6. When the movable rod 12 abuts against one side of the sensor 6, it will drive the positioning plate 11 to move in the direction away from the sensor 6. At this time, the reset spring 10 will drive the L-shaped plate 9 to abut against the sensor 6 more closely. When the abutment against the sensor 6 needs to be released, the L-shaped plate 9 is pulled outward along the moving groove 721 to the initial position, and then the limit plate 72 is moved in the direction away from the sensor 6. The movable rod 12 and the positioning plate 11 move to the initial position under the action of the second spring 14. At this time, the baffle 13 and the movable rod 12 are moved to the initial position. The side of the movable plate 15 without the notch 18 is in contact with each other, or the force provided by the reset spring 10 only drives the L-shaped plate 9 to abut against one side of the sensor 6, providing a support and limiting effect for the sensor 6. When the L-shaped plate 9 abuts against the sensor 6, it can move with the movement of the limiting plate 72, and the limiting plate 72 will drive the L-shaped plate 9 to move synchronously in the direction away from the sensor 6. The movement of the limiting plate 72 in the direction away from the sensor 6 will cause the movable rod 12 to lose the abutting force, and under the action of the second spring 14, the baffle 13 will be pulled to the initial position. At this time, the baffle 13 and the movable plate 15 have a notch 18. One side of the notch 18 is in a position close to each other, and the L-shaped plate 9 is moved outward along the movable groove 721. The movement of the L-shaped plate 9 will drive the movable plate 15 to move outward so that the notch 18 of the movable plate 15 and the notch 18 of the baffle 13 abut against each other. During the abutting movement, the movable plate 15 drives the cross bar 16 to move along the cross groove 91 into the L-shaped plate 9, thereby compressing the third spring 17. When the movable plate 15 moves to no longer abut against the baffle 13, the third spring 17 will push the movable plate 15 to move to the initial position, so that the baffle 13 and the side of the movable plate 15 without the notch 18 abut against each other again.

[0032] See also Figure 1As shown, in the present embodiment, preferably, the driving assembly 8 comprises a moving block 81, the moving block 81 is provided with an inclined groove 82, the inclined groove 82 is movably abutted against one end of the lifting rod 71 away from the limit plate 72, and the moving block 81 is fixedly connected to the sliding plate 2; the rotation of the screw rod 4 drives the two sliding plates 2 to move synchronously, the movement of the sliding plate 2 drives the moving block 81 to move toward the direction close to the sensor 6, and the movement of the moving block 81 drives the lifting rod 71 to move relative to the inclined groove 82, moving from the lower part of the inclined groove 82 to the higher part. In this process, the lifting rod 71 is driven to move toward the direction close to the sensor 6 so that the limit plate 72 abuts against the sensor 6, thereby ensuring the stability of the sensor 6.

[0033] See also Figure 1 and Figure 8 As shown, in the present embodiment, preferably, a limiting hole 102 is provided on the top of the fixing frame 1, and the limiting hole 102 is communicated with the sliding groove 101, wherein a limiting ball 19 is fixedly provided on one side of the upper sliding plate 2, and the limiting ball 19 is movably engaged with the limiting hole 102; in the process of the sliding plate 2 moving along the sliding groove 101 toward the sensor 6, it will drive the limiting plate 72 to limit and fix the sensor 6, and the limiting ball 19 moves along with the movement of the sliding plate 2 during this process, and the limiting ball 19 is made of elastic material, and when the limiting ball 19 moves to the position of the limiting hole 102 along with the movement of the sliding plate 2, the limiting ball 19 will engage with the limiting hole 102, and at this time the sliding plate 2 cannot continue to move, thereby ensuring the limiting effect of the limiting plate 72 and the L-shaped plate 9 on the sensor 6.

[0034] See also Fig. 9 As shown, in the present embodiment, preferably, a fixing ring 20 is fixedly provided in the limiting hole 102, a push rod 21 is movably provided at the center of the fixing ring 20, one end of the push rod 21 is movably abutted against the limiting ball 19, a circular ring 22 is fixedly sleeved on the outer side of the push rod 21, and a fourth spring 23 is fixedly provided between the fixing ring 20 and the circular ring 22; when it is necessary to release the engagement between the limiting ball 19 and the limiting hole 102, the push rod 21 is pushed into the limiting hole 102, one end of the push rod 21 will drive the limiting ball 19 to release the engagement with the limiting hole 102, at this time, the reverse movement of the sliding plate 2 can be realized by rotating the screw rod 4 in the reverse direction, and the circular ring 22 will be driven to move together during the movement of the push rod into the limiting hole 102, thereby compressing the fourth spring 23, and the fixing ring 20 provides support for the fourth spring 23.

[0035] See also Figure 4-Figure 5 and Fig.10As shown, in this embodiment, preferably, a strap 24 is fixedly arranged between the two sliding plates 2, a square plate 25 is axially symmetrically fixedly arranged on one side of the connecting plate 3, a rotating rod 26 is movably arranged through the center of the square plate 25, and a pressing plate 27 is fixedly arranged at one end of the rotating rod 26, and the pressing plate 27 is located on one side of the strap 24; the movement of the two sliding plates 2 in the direction close to the sensor 6 will drive the strap 24 to move synchronously, and the movement of the sliding plate 2 will first drive the moving block 81 to move so that the lifting rod 71 moves in the direction close to the sensor 6 so that the limit plate 72 and the L-shaped plate 9 limit and fix the sensor 6, and then the sliding plate 2 continues to move in the same direction so that the oblique groove 82 of the moving block 81 continues to contact the lifting rod 71 at a high position, the limit plate 72 and the L-shaped plate 9 remain stationary, and the movement of the sliding plate 2 The movement will drive the strap 24 to move synchronously. After the L-shaped plate 9 and the limit plate 72 limit and fix the sensor 6, the strap 24 abuts against one side of the sensor 6. The contact position between the strap 24 and the sensor 6 is located between the two L-shaped plates 9. After the strap 24 abuts against one side of the sensor 6, the sliding plate 2 will continue to move a short distance in the same direction, so that the abutment between the strap 24 and the sensor 6 is tighter. The movement of the sliding plate 2 will also drive the connecting plate 3, the square plate 25, the rotating rod 26 and the pressure plate 27 to move synchronously. When the strap 24 contacts one side of the sensor 6, the rotating rod 26 is rotated. The rotation of the rotating rod 26 will drive the pressure plate 27 to rotate, so that the pressure plate 27 can press the strap 24 on one side, so that the abutment between the strap 24 and the sensor 6 is tighter, further ensuring the stability of the sensor 6.

[0036] See also Fig.10 As shown, in the present embodiment, preferably, a rotating plate 28 is fixedly provided at one end of the rotating rod 26 away from the pressing plate 27, a torsion spring 29 is fixedly provided between the rotating rod 26 and the square plate 25, and a limiting rod 30 is fixedly provided on one side of the fixing frame 1, and the limiting rod 30 is movably abutted against the rotating plate 28; when the strap 24 contacts one side of the sensor 6, the rotating plate 28 abuts against the limiting rod 30, and the sliding plate 2 continues to move in the same direction, and the rotating plate 28 is driven to rotate under the action of the limiting rod 30, and the rotation of the rotating plate 28 drives the rotating rod 26 and the pressing plate 27 to rotate, thereby pressing the strap 24, so that the abutment between the strap 24 and the sensor 6 is tighter. In this process, the torsion spring 29 is twisted, and when it is necessary to release the abutment limit of the sensor 6, the sliding plate 2 is moved in the opposite direction, so that the limiting rod 30 and the rotating plate 28 are released from abutment, and the rotating plate 28, the rotating rod 26 and the pressing plate 27 are driven to return to the initial state under the action of the torsion spring 29.

[0037] The working principle of the present invention is: two adjacent areas on the same side of the pipeline are polished to polish off impurities such as rust on the surface. The area of ​​the polished area should be larger than the area of ​​the surface of the sensor 6. The number of sensors 6 is set to 2, which are set at the front and back positions of the pipeline. A magnet is set on the side of the sensor 6 that contacts the pipeline, which makes it easy for the sensor 6 to be adsorbed on the outside of the pipeline. A coupling agent is applied to the magnet of the sensor 6 and the surface is adsorbed together with the pipeline. The coupling agent is used to fill the tiny gap between the sensor 6 and the pipeline wall to optimize the transmission efficiency of the ultrasonic wave. After the sensor 6 is attached to the pipeline, the screw rod 4 is rotated. The rotation of the screw rod 4 drives one of the sliding plates 2 to move along the sliding plate 2 to the side close to the sensor 6. The movement of one sliding plate 2 will bring The movable connecting plate 3 and the other sliding plate 2 move synchronously together, and the movement of the two sliding plates 2 drives the moving block 81 to move in the direction close to the sensor 6. The movement of the moving block 81 drives the lifting rod 71 to move relative to the inclined slot 82, and moves from the lower part of the inclined slot 82 to the higher part. In this process, the lifting rod 71 will be driven to move in the direction close to the sensor 6. The movement of the lifting rod 71 drives the limiting plate 72 to move in the direction close to the sensor 6 until one end of the limiting plate 72 abuts against the sensor 6. In the initial state, the baffle 13 is in contact with the movable plate 15, and the reset spring 10 is in a stretched state. The limiting plate 72 drives the positioning plate 11, the movable rod 12 and the L-shaped plate 9 to move together in the direction close to the sensor 6 until the bottom of the movable rod 12 abuts against the sensor 6 abut against each other, thereby driving the movable rod 12 to move along the positioning plate 11 in the direction away from the sensor 6. In this process, the second spring 14 is stretched, and the upward movement of the movable rod 12 will drive the baffle 13 to move upward, so that the movable plate 15 loses the abutment of the baffle 13. Under the action of the reset spring 10, the L-shaped plate 9 will be driven to move in the direction close to the sensor 6, so that one side of the L-shaped plate 9 and the sensor 6 abut more closely, which can ensure the stability of the sensor 6. At the same time, the movement of the two sliding plates 2 in the direction close to the sensor 6 will drive the binding belt 24 to move synchronously. When the binding belt 24 contacts one side of the sensor 6, the rotating plate 28 abuts against the limiting rod 30, and the sliding plate 2 continues to move in the same direction. Under the action of the limiting rod 30, the rotating plate 28 will be driven The rotation of the rotating plate 28 drives the rotating rod 26 and the pressing plate 27 to rotate, thereby pressing the strap 24, making the strap 24 and the sensor 6 more tightly abutted. During this process, the torsion spring 29 is twisted. When it is necessary to release the abutment limit of the sensor 6, the sliding plate 2 is moved in the opposite direction, so that the limiting rod 30 and the rotating plate 28 are released from the abutment. Under the action of the torsion spring 29, the rotating plate 28, the rotating rod 26 and the pressing plate 27 are driven to return to the initial state. In addition, when the sliding plate 2 moves along the sliding groove 101 toward the sensor 6, the limiting plate 72 is driven to limit and fix the sensor 6. During this process, the limiting ball 19 moves along with the movement of the sliding plate 2. The limiting ball 19 is made of elastic material.When the limiting ball 19 moves to the position of the limiting hole 102 along with the movement of the sliding plate 2, the limiting ball 19 will be engaged with the limiting hole 102, and the sliding plate 2 cannot move further, thus ensuring the limiting effect of the limiting plate 72 and the L-shaped plate 9 on the sensor 6.

Claims

1. An ultrasonic household meter sensor structure, comprising a fixing frame (1), characterized in that: The fixing frame (1) is fixedly arranged on the outside of the pipeline, and the fixing frame (1) is provided with sliding grooves (101) axially symmetrically on the upper and lower sides, and a sliding plate (2) is slidably arranged in the sliding groove (101), and a connecting plate (3) is fixedly connected between the two sliding plates (2), wherein a screw rod (4) is rotatably arranged in the upper sliding groove (101), and the screw rod (4) movably penetrates the upper sliding plate (2), and the fixing frame (1) is provided with transverse plates (5) axially symmetrically on both sides relative to the pipeline, and a sensor (6) is bonded to the outside of the pipeline, and a limiting component (7) for limiting the sensor (6) is arranged on the transverse plate (5), and a driving component (8) is arranged on one side of the sliding plate (2), and the driving component (8) is connected to the limiting component (7) in a transmission manner.

2. The ultrasonic household meter sensor structure according to claim 1, characterized in that: The limit assembly (7) comprises a lifting rod (71), the lifting rod (71) movably passes through the transverse plate (5), one end of the lifting rod (71) close to the sensor (6) is fixedly connected to a limit plate (72), the width of the limit plate (72) is smaller than the width of the sensor (6), the limit plate (72) movably abuts against the sensor (6), a first spring (73) is fixedly arranged between the limit plate (72) and the transverse plate (5), and the first spring (73) is movably sleeved on the outside of the lifting rod (71).

3. The ultrasonic household meter sensor structure according to claim 2, characterized in that: The upper limit plate (72) has movable grooves (721) axially symmetrically provided on both sides, an L-shaped plate (9) is movably arranged in the movable groove (721), a return spring (10) is fixedly connected between one side of the L-shaped plate (9) and the inner wall of the movable groove (721), and one side of the L-shaped plate (9) is movably abutted against the sensor (6).

4. The ultrasonic household meter sensor structure according to claim 3, characterized in that: The limiting plate (72) is fixedly provided with a positioning plate (11) on one side of the movable groove (721); a movable rod (12) is movably provided on the positioning plate (11) and penetrates therethrough; a baffle (13) is fixedly provided on the top of the movable rod (12); a second spring (14) is fixedly provided between the baffle (13) and the positioning plate (11); a transverse groove (91) is provided on the L-shaped plate (9); a movable plate (15) is movably provided in the transverse groove (91); and the movable plate (15) is movably abutted against the baffle (13).

5. The ultrasonic household meter sensor structure according to claim 4, characterized in that: A cross bar (16) is movably arranged in the transverse groove (91), one end of the cross bar (16) is fixedly connected to the movable plate (15), one end of the cross bar (16) away from the movable plate (15) movably penetrates the L-shaped plate (9), a third spring (17) is fixedly arranged between the movable plate (15) and the inner wall of the transverse groove (91), the third spring (17) is movably sleeved on the outer side of the cross bar (16), and a notch (18) is provided on one side of the baffle plate (13) and the movable plate (15).

6. The ultrasonic household meter sensor structure according to claim 2, characterized in that: The driving assembly (8) comprises a moving block (81), the moving block (81) is provided with an inclined groove (82), the inclined groove (82) is movably abutted against one end of the lifting rod (71) away from the limiting plate (72), and the moving block (81) is fixedly connected to the sliding plate (2).

7. The ultrasonic household meter sensor structure according to claim 1, characterized in that: A limiting hole (102) is provided on the top of the fixing frame (1), and the limiting hole (102) is communicated with the sliding groove (101), wherein a limiting ball (19) is fixedly provided on one side of the upper sliding plate (2), and the limiting ball (19) is movably engaged with the limiting hole (102).

8. The ultrasonic household meter sensor structure according to claim 7, characterized in that: A fixing ring (20) is fixedly arranged in the limiting hole (102), a push rod (21) is movably arranged through the center of the fixing ring (20), one end of the push rod (21) is movably abutted against the limiting ball (19), a circular ring (22) is fixedly sleeved on the outer side of the push rod (21), and a fourth spring (23) is fixedly arranged between the fixing ring (20) and the circular ring (22).

9. The ultrasonic household meter sensor structure according to claim 1, characterized in that: A binding belt (24) is fixedly arranged between the two sliding plates (2), a square plate (25) is fixedly arranged axially symmetrically on one side of the connecting plate (3), a rotating rod (26) is movably arranged through the center of the square plate (25), a pressing plate (27) is fixedly arranged at one end of the rotating rod (26), and the pressing plate (27) is located on one side of the binding belt (24).

10. The ultrasonic household meter sensor structure according to claim 9, characterized in that: A rotating plate (28) is fixedly provided at one end of the rotating rod (26) away from the pressing plate (27), a torsion spring (29) is fixedly provided between the rotating rod (26) and the square plate (25), and a limiting rod (30) is fixedly provided on one side of the fixing frame (1), and the limiting rod (30) is movably abutted against the rotating plate (28).

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