CN109342559B

CN109342559B - Wall surface knocking sound wave detection device

Info

Publication number: CN109342559B
Application number: CN201810966810.0A
Authority: CN
Inventors: 周爱国; 杨思静; 刘备
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2018-08-23
Filing date: 2018-08-23
Publication date: 2021-05-11
Anticipated expiration: 2038-08-23
Also published as: CN109342559A

Abstract

The invention relates to a wall surface knocking sound wave detection device, which comprises a vehicle body, a knocking unit, a sensor unit and a controller, wherein: the knocking unit is arranged on the vehicle body and comprises a driving assembly, an elastic action assembly and a knocking block, wherein the driving assembly is connected in a transmission mode in sequence, the driving assembly is rotated to act on the elastic action assembly, the elastic action assembly is driven to act, the knocking block knocks a wall surface once in a work period and bounces, the sensor unit is arranged on the vehicle body and comprises a sound wave sensor and a sensor lifting assembly, the sensor lifting assembly drives the sound wave sensor to descend to be attached to the wall surface before the knocking block knocks the wall surface, and the sound wave sensor is driven to reset after knocking is completed. Compared with the prior art, the wall surface acoustic wave detection device has the advantages that the elastic action component is driven to act through the motor, the knocking block is driven to knock the wall surface, the knocking force is constant and adjustable each time, and the acoustic wave sensor is tightly attached to the wall surface to collect the detected acoustic waves, so that the detection is reliable and accurate.

Description

Wall surface knocking sound wave detection device

Technical Field

The invention relates to the field of wall surface detection, in particular to a wall surface knocking sound wave detection device.

Background

The building outer wall hollowing is a ubiquitous problem, and how to detect the hollowing condition of the existing building outer wall is more and more concerned. On the basis of deep analysis of the traditional knocking detection method, experimental verification is carried out under different exterior wall veneers and various working conditions, and results show that the hollowing condition of the wall surface can be judged by utilizing the wall surface knocking sound vibration characteristic. The building outer wall is protected by using the modes of facing bricks, mosaic or plastering and the like, and has beautiful effect. However, due to factors such as unqualified materials, improper construction process or unqualified construction quality in construction engineering and natural aging in normal use, the hollowing phenomenon of the exterior wall finishing material generally exists. For the problem of hollowing of the existing building outer wall veneer, a certain detection method is required to be adopted for detection, and repair is carried out according to the detection condition, so that the use safety is ensured. The traditional detection method is that an experienced engineer uses a hollowing hammer to knock the wall surface, and listens to knocking sound to distinguish whether the wall surface is hollowed. For example, chinese patent CN207472834U discloses a blank drum detection hammer, however, this manual detection method is inefficient, has a small application range and depends on the experience of engineers. In order to overcome the defects of manual knock detection, the invention designs a high-efficiency and reliable wall knock sound wave detection device.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a wall surface knocking sound wave detection device.

The purpose of the invention can be realized by the following technical scheme:

a wall strike acoustic detection device, comprising:

the vehicle body is used for moving on the wall surface,

the knocking unit is arranged on the vehicle body and comprises a driving component, an elastic action component and a knocking block which are sequentially connected in a transmission way, the driving component acts on the elastic action component through rotation to drive the elastic action component to act, so that the knocking block knocks a wall surface once in a working period and bounces,

the sensor unit is arranged on the vehicle body and comprises a sound wave sensor and a sensor lifting assembly, the sensor lifting assembly drives the sound wave sensor to descend to be attached to the wall surface before the knocking block knocks the wall surface and drives the sound wave sensor to reset after knocking is finished,

and the controller is used for controlling the actions of the knocking unit and the sensor unit.

As a preferred embodiment of the invention, the driving component is a spring leaf right-angle motor fixed on a vehicle body; the knocking block is a knocking block A; the elastic action component is a bar-shaped spring piece, one end of the bar-shaped spring piece is fixedly connected with a rotating shaft of a spring piece right-angle motor, so that the bar-shaped spring piece can swing in a plane vertical to the rotating shaft of the spring piece right-angle motor along with the rotation of the rotating shaft of the spring piece right-angle motor, and the other end of the bar-shaped spring piece is connected with the knocking block A; still be equipped with on the automobile body and strike travel switch A, when spring leaf right angle motor drove the bar spring leaf and swing to knocking piece A and strike the wall, bar spring leaf contacts with knocking travel switch A, and spring leaf right angle motor drives bar spring leaf reverse swing under the control of controller, makes and strikes piece A and breaks away from the wall to the preparation of knocking next time is done.

As a preferred embodiment of the invention, the strip-shaped spring piece consists of a fixed spring piece and a tail-end knocking spring piece which are detachably connected, the fixed spring piece is fixedly connected with a rotating shaft of a spring piece right-angle motor, and the knocking block a is arranged at the tail end of the tail-end knocking spring piece; when the spring piece right-angle motor drives the strip-shaped spring piece to swing to the knocking block A to knock the wall surface, the fixed spring piece is in contact with the knocking travel switch A.

As a preferred embodiment of the invention, the driving assembly comprises a driving lever right-angle motor and a driving plate driving lever mechanism, wherein the driving plate driving lever mechanism consists of a driving plate A connected with a rotating shaft of the driving lever right-angle motor and a plurality of driving levers uniformly distributed along the circumferential direction of the driving plate A; the knocking block is a knocking block B; the elastic action assembly comprises a knocking rod, a knocking rod swinging frame and a knocking spring, the knocking rod is movably connected to the knocking rod swinging frame and can swing around the knocking rod swinging frame, the knocking block B is connected to the knocking rod on one side of the knocking rod swinging frame, a shifting rod of the drive plate shifting rod mechanism acts on the end part of the knocking rod on the other side of the knocking rod swinging frame and is used for shifting the knocking rod and driving the knocking rod to swing around the knocking rod swinging frame so as to enable the knocking block B to be far away from the wall surface, the knocking spring is arranged above the knocking rod, and the joint of the knocking spring and the knocking rod is positioned between the knocking rod swinging frame and the drive plate shifting rod mechanism;

the driving plate and driving rod mechanism is driven by a driving rod right-angle motor to rotate, a driving rod on the driving plate A drives the knocking rod to swing around the knocking rod swing frame and enable the knocking block B to be far away from the wall surface, and the knocking spring extends when the driving rod drives the knocking rod and drives the knocking rod to reversely swing through contraction when the driving rod continues to rotate until the driving rod is separated from the knocking rod, so that the knocking block B knocks the wall surface; still be equipped with on the automobile body and strike travel switch B, when piece B strikes the wall, strike travel switch B and strike the pole contact, the controller control driving lever right angle motor time delay stall to before driving lever right angle motor stall, stir the pole of striking and drive and strike the pole swing to initial position through the adjacent driving lever that rotates in the direction, make and strike piece B and break away from the wall, and make the preparation of next strike.

As a preferred embodiment of the present invention, the position of the knocking block B in the length direction of the knocking rod is adjustable, and the knocking stroke switch B is located above the knocking rod.

As a preferred embodiment of the invention, the driving component comprises a dial block right-angle motor A and a dial block mechanism, wherein the dial block mechanism consists of a dial B connected with a rotating shaft of the dial block right-angle motor A and a plurality of dial blocks A uniformly distributed along the circumferential direction of the dial B; the knocking block is a knocking block C; the elastic action component comprises a two-section type knocking rod, a knocking rod swinging frame, a limiting gasket A and a compression spring A, the two-section type knocking rod consists of a rigid rod section and an elastic rod section which are connected in sequence, the rigid rod section is movably connected to the knocking rod swinging frame, and can swing around the knocking rod swing frame, the knocking block C is connected with the tail end of the elastic rod section, the shifting block A of the dial shifting block mechanism acts on the end part of the rigid rod section, used for shifting the two-section knocking rod and driving the two-section knocking rod to swing around the knocking rod swing frame and enable the knocking block C to knock the wall surface, the compression spring A is arranged above the rigid rod section, and the connection position of the compression spring A and the rigid rod section is positioned between the knocking rod swinging frame and the dial block mechanism, the limiting gasket A is arranged above the rigid rod section and is positioned between the elastic rod section and the knocking rod swinging frame;

the driver plate shifting block mechanism rotates under the driving of a shifting block right-angle motor, a shifting block A on a driver plate B shifts a rigid rod section, and drives a two-section type knocking rod to swing around a knocking rod swinging frame, a compression spring A contracts when the shifting block A shifts the rigid rod section, when the tail end of the rigid rod section is separated from the shifting block, the rigid rod section continuously swings under the action of inertia, and the knocking block C is thrown to a wall surface through an elastic rod section to realize knocking, after the knocking, the rigid rod section reversely swings under the action of the compression spring to enable the knocking block C to be separated from the wall surface, when the rigid rod section reversely swings to be in contact with a limiting gasket A, the two-section type knocking rod resets, and the preparation for next knocking is well made.

As a preferred embodiment of the invention, the driving component comprises a shifting block right-angle motor B and a dial shifting block mechanism; the dial and block shifting mechanism consists of a dial C connected with a rotating shaft of a block shifting right-angle motor B and a plurality of shifting blocks B uniformly distributed along the circumferential direction of the dial C; the knocking block is a knocking block D; the elastic action component comprises a sliding sleeve, an I-shaped piece, an elastic rod, a compression spring B, a limiting gasket B and a limiting spring piece, wherein the I-shaped piece consists of a waist part and baffle plates connected to two ends of the waist part, the waist part is vertically arranged, the compression spring B is arranged below the I-shaped piece and is positioned between the baffle plate at the bottom end of the I-shaped piece and a vehicle body, the limiting gasket B is arranged above the baffle plate at the top end of the I-shaped piece and is matched with the compression spring B to limit the I-shaped piece, the sliding sleeve is sleeved on the waist part of the I-shaped piece, the baffle plates at two ends of the I-shaped piece are used for driving the sliding sleeve to move up and down, the limiting spring piece acts on the sliding sleeve from the side surface to limit the sliding sleeve, a gap is formed between the sliding sleeve and the baffle plates at two ends of the I-shaped piece in a natural state, the elastic rod is horizontally connected to the, the I-shaped piece is used for being stirred to move downwards, the baffle plate at the top of the I-shaped piece drives the sliding sleeve to move downwards, and the limit of the limiting spring piece on the sliding sleeve is overcome;

the dial plate shifting block mechanism is driven by a dial block right-angle motor B to rotate, a dial block B on the dial plate C shifts the edge of a baffle plate at the top of the I-shaped piece, the I-shaped piece moves downwards and enables a compression spring B to contract, the baffle plate at the top of the I-shaped piece drives a sliding sleeve to move downwards after contacting the sliding sleeve and overcomes the limit of a limit spring piece on the sliding sleeve, at the moment, the edge of the I-shaped piece is separated from the dial block, the I-shaped piece and the sliding sleeve continue to move downwards under the action of inertia, a knocking block D is thrown to the wall surface through an elastic rod to realize knocking, after the knocking, the compression spring B pushes the I-shaped piece to ascend, the baffle plate at the bottom end of the I-shaped piece drives the sliding sleeve to ascend after contacting the sliding sleeve, the limit spring piece is enabled to restore to the limit of the sliding sleeve.

As a preferred embodiment of the present invention, the limiting spring plate includes a vertically arranged spring plate body and a triangular push block arranged on the spring plate body and facing the side surface of the sliding sleeve, and the sliding sleeve is provided with a triangular protrusion matching with the triangular push block.

As a preferred embodiment of the present invention, the sensor lifting assembly includes a sensor lifting fixing frame, a lifting right-angle motor, a slider-crank mechanism and a lifting travel switch, the sensor lifting fixing frame is disposed on the vehicle body, the lifting right-angle motor is fixed on the sensor lifting fixing frame, one end of the slider-crank mechanism is in transmission connection with the lifting right-angle motor, the other end of the slider-crank mechanism is connected with the acoustic wave sensor, when the acoustic wave sensor falls to be attached to the wall surface, the lifting travel switch contacts with the slider-crank mechanism, and the acoustic wave sensor stops falling.

As a preferred embodiment of the present invention, the crank-slider mechanism includes a crank, a connecting rod, and a slider, which are sequentially connected in a transmission manner, wherein the tail end of the crank is connected in a transmission manner with a rotating shaft of a lifting right-angle motor, the slider is vertically arranged and is connected with a sensor lifting fixing frame in a sliding manner in the vertical direction through a guide rail, and the acoustic sensor is arranged at the tail end of the slider; when the sound wave sensor descends to be attached to the wall surface, the lifting travel switch is in contact with the connecting part of the crank and the connecting rod.

Compared with the prior art, the invention has the following beneficial effects:

(1) the invention drives the elastic action component to act through the motor and drives the knocking block to knock the wall surface, and the knocking force is constant and adjustable each time:

when the spring piece is driven to swing by the motor, the spring piece can be quickly bounced after knocking each time, noise in the detected sound wave is reduced, knocking force can be adjusted by adjusting the rotating speed of the motor, and the knocking force can also be adjusted by replacing the spring piece;

stir elastic component through driving lever or shifting block to when elastic component used the spring, similar when using the spring leaf, can bounce fast after knocking the wall, reduce the noise in the detection sound wave. The wall surface is knocked under the action of the spring force, and the knocking force is constant every time. The knocking force can be adjusted by replacing springs with different rigidity, the position can be adjusted by adjusting the position of the knocking block, and the knocking force can also be adjusted.

(2) The invention collects the detection sound wave by clinging the sound wave sensor to the wall surface, so that the detection is reliable and accurate.

(3) The whole body can be made of aluminum materials so as to reduce the mass, improve the strength and be easy to process.

Drawings

Fig. 1 is a schematic structural view of a wall-knocking sound wave detection device according to embodiment 1 of the present invention.

Fig. 2 is a flow chart of the operation of the present invention.

Fig. 3 is a schematic view of the operation principle of the knocking unit according to embodiment 1 of the present invention.

Fig. 4 is a schematic view of the vehicle body structure of the present invention.

Fig. 5 is a schematic structural view of a knocking unit according to embodiment 1 of the present invention.

Fig. 6 is a schematic structural view of an output shaft of the spring plate right-angle motor and a D-shaped hole of the spring plate fixing block in embodiment 1 of the invention.

Fig. 7 is a schematic structural diagram of a sensor unit of the present invention.

Fig. 8 is a schematic structural view of a slider of the sensor unit of the present invention.

Fig. 9 is a schematic view of the structure of the output shaft of the lifting right-angle motor and the D-shaped hole of the crank.

Fig. 10 is a schematic structural view of a wall-tapping sound wave detection device according to embodiment 2 of the present invention.

Fig. 11 is a schematic structural view of another view of the wall-strike acoustic wave detection apparatus according to embodiment 2 of the present invention.

Fig. 12 is a schematic view of the operation principle of the knocking unit according to embodiment 2 of the present invention.

Fig. 13 is a schematic structural view of a knocking block and a travel switch according to embodiment 2 of the present invention.

Fig. 14 is a schematic structural view of a knocking adjustment block and a knocking block in embodiment 2 of the present invention.

Fig. 15 is a schematic structural view of the dial lever mechanism according to embodiment 2 of the present invention.

Fig. 16 is a schematic view of the operation principle of the knocking unit according to embodiment 3 of the present invention.

Fig. 17 is a schematic view of the operation principle of the knocking unit according to embodiment 4 of the present invention.

In the drawings, 1 is a vehicle body, 2 is a knocking unit of

embodiment

1, 3 is a sensor unit, 4 is a knocking unit of embodiment 2, 5 is a knocking unit of embodiment 3, 6 is a knocking unit of

embodiment

4, 101 is a base, 102 is a wheel, 103 is a vehicle body bearing, 104 is an axle, 201 is a spring plate right-angle motor, 202 is a spring plate fixing block, 203 is a fixing spring plate, 204 is a tail end knocking spring plate, 205 is a knocking fixing frame, 206 is a knocking stroke switch a, 207 is a stroke switch a fixing frame, 301 is a lifting right-angle motor, 302 is a lifting right-angle motor fixing frame, 303 is a crank block mechanism, 304 is a sensor lifting fixing frame, 305 is a lifting stroke switch fixing frame, 306 is a lifting stroke switch, 401 is a knocking lever mechanism, 402 is a stroke switch fixing mechanism, 403 is a lever fixing mechanism, 501 is a dial block a, 502 is a dial B, 503 is a dial block right-angle motor a, 504 is compression spring A, 505 is rigid rod section, 506 is elastic rod section, 507 is knocking block C, 508 is limit washer A, 601 is shifting block B, 602 is dial C, 603 is shifting block right angle motor B, 604 is sliding sleeve, 605 is workpiece, 606 is compression spring B, 607 is limit washer B, 608 is limit spring leaf, 609 is elastic rod, 610 is knocking block D, 1011 is strengthening rib, 1012 is rectangular groove, 1013 is round hole, 2011 is spring leaf right angle motor D-shaped shaft, 2012 is spring leaf right angle motor threaded hole, 2021 is fixed block D-shaped hole, 2041 is knocking block A, 3011 is lifting right angle motor D-shaped shaft, 3012 is lifting right angle motor threaded hole, 3031 is crank, 3032 is connecting rod, 3033 is sliding block, 3034 is guide rail, 4011 is knocking rod, 4012 is knocking rod bearing, 4013 is shaft, 4014 is limit angle steel, 4015 is knocking block, 4016 is stroke switch B adjustment block B, 4021 is stroke switch B fixing frame, 4022 is a travel switch B fixing channel steel, 4023 is travel switch B fixing angle steel, 4024 is a knocking travel switch B, 4031 is a deflector rod fixing frame, 4032 is a deflector rod right-angle motor, 4033 is a coupler, 4034 is a bearing supporting seat, 4035 is a dial plate A, 4036 is a dial plate A bearing, 4037 is a transmission shaft, 4038 is a deflector rod, 5011 is a dial block A, 6011 is a dial block B, 30311 is a crank D-shaped hole, 30331 is a sliding block threaded hole, 40111 is a knocking spring, 40351 is a small round hole, 40352 is a large round hole, 40381 is a current deflector rod, and 40382 is a to-be-moved lever.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Example 1

A wall-knocking acoustic wave detection device, as shown in fig. 1, includes a vehicle body 1, a knocking unit 2, a sensor unit 3, and a controller (not shown), wherein: the vehicle body 1 is used for moving on a wall surface; the knocking unit is arranged on the vehicle body 1 and comprises a driving assembly, an elastic action assembly and a knocking block which are connected in a transmission mode in sequence, the driving assembly acts on the elastic action assembly through rotation to drive the elastic action assembly to act, and the knocking block knocks a wall surface once and bounces in a working period; the sensor unit 3 is arranged on the vehicle body 1 and comprises a sound wave sensor and a sensor lifting assembly, the sensor lifting assembly drives the sound wave sensor to descend to be attached to a wall surface before the knocking block knocks the wall surface, and drives the sound wave sensor to reset after knocking is finished; the controller is used for controlling the actions of the knocking unit and the sensor unit.

In this embodiment, as shown in fig. 4, the vehicle body 1 is used to support the respective mechanisms of the entire apparatus, maintain their fixed relative positions, and allow the apparatus to move smoothly on the wall surface. The vehicle body 1 includes a floor 101, a stainless steel wheel 102, a vehicle body bearing 103, and an axle 104. In order to increase the strength of the base plate 101, the edge of the base plate 101 may be bent to form a rib 1011 when the base plate is machined. The vehicle body 1 is simple in structure disassembly, stable and reliable, and has strong adaptability to severe working environments.

In this embodiment, the driving assembly is a spring plate right-angle motor 201 fixed on the vehicle body, the spring plate right-angle motor 201 is fixed on the vehicle body 1 through knocking the fixing frame 205, and in order to improve the strength of knocking the fixing frame 205 and ensure the convenience of installing other parts in the knocking unit 2, the knocking fixing frame 205 adopts a U-shaped bridge structure and is fixed on the bottom plate 101.

In this embodiment, the tapping block is a tapping block a 2041.

In this embodiment, as shown in fig. 5, the elastic action component is a bar-shaped spring piece, one end of the bar-shaped spring piece is fixedly connected with a rotating shaft of the spring piece right-angle motor 201, so that the bar-shaped spring piece can swing in a plane perpendicular to the rotating shaft of the spring piece right-angle motor 201 along with the rotation of the rotating shaft of the spring piece right-angle motor 201, and the other end of the bar-shaped spring piece is connected with the knocking block a 2041; still be equipped with on automobile body 1 and strike travel switch A206, when spring leaf right angle motor 201 drove the bar spring leaf and swing to strike block A2041 and strike the wall, bar spring leaf contacts with striking travel switch A206, and spring leaf right angle motor 201 drives bar spring leaf reverse swing under the control of controller, makes and strikes block A2041 and breaks away from the wall to the preparation of striking next time is well made.

In the present embodiment, the base plate 101 and the tapping stroke switch a206 are connected by a stroke switch a holder 207. The tap travel switch a206 is used to detect whether the tap is complete. The bar-shaped spring piece passes through spring piece fixed block 202 and is connected with the spring piece right angle motor, and is less owing to strike the mountable space in the mount 205, considers the convenience of installation and processing, and spring piece right angle motor 201 and spring piece fixed block 202 adopt spring piece right angle motor D type axle 2011 and fixed block D type hole 2021 to carry out circumference fixed, adopt screw and spring piece right angle motor screw hole 2012 to connect and carry out axial fixity, as shown in fig. 6.

In order to reduce the noise in the detected sound wave, each knocking action is rapid and accurate, and the knocking object bounces immediately, so the invention adopts a flexible strip-shaped spring piece as a knocking object. In the working process, the strip-shaped spring piece needs to be replaced according to the detection requirement, therefore, the strip-shaped spring piece is preferably composed of a fixed spring piece 203 and a tail end knocking spring piece 204 which are detachably connected, the fixed spring piece 203 is fixedly connected with a rotating shaft of a spring piece right-angle motor 201 through a spring piece fixed block 202, a knocking block A2041 is arranged at the tail end of the tail end knocking spring piece 204, and the diameter of the knocking block A2041 can be 6 mm; when the spring piece right-angle motor 201 drives the strip-shaped spring piece to swing to the knocking block A2041 to knock the wall surface, the fixed spring piece 203 is in contact with the knocking travel switch A206. The replaceable tip strikes the spring plate 204 to meet the sensing requirements as the operating environment changes. The bottom plate 101 of the embodiment can be further provided with a rectangular groove 1012 for the tail end to knock the spring piece 204 to swing, so that the length of the device is effectively shortened, the structure is more compact, and the arrangement of components is more reasonable.

As shown in fig. 7 to 9, the sensor lifting assembly in this embodiment includes a sensor lifting fixing frame 304, a lifting right-angle motor 301, a slider-crank mechanism 303 and a lifting travel switch 306, the sensor lifting fixing frame 304 is disposed on the vehicle body 1, in order to enhance the strength of the sensor lifting fixing frame 304 and ensure the convenience of installing other parts in the sensor unit 3, the sensor lifting fixing frame 304 adopts a U-shaped bridge structure, the lifting right-angle motor 301 is fixed on the sensor lifting fixing frame 304 through the lifting right-angle motor fixing frame 302, one end of the slider-crank mechanism 303 is connected with the lifting right-angle motor 301 in a transmission manner, the other end is connected with the acoustic wave sensor, when the acoustic wave sensor is lowered to be attached to a wall surface, the lifting travel switch 306 is connected with the sensor lifting fixing frame 304 through the lifting travel switch fixing frame 305, and, the acoustic wave sensor stops descending. In order to ensure that the sensor descends reliably and stably, the sensor ascends and descends in a linear motion mode, therefore, the sensor ascends and descends by the aid of the crank slider mechanism 303, the crank slider mechanism 303 in the embodiment comprises a crank 3031, a connecting rod 3032 and a slider 3033 which are sequentially connected in a transmission mode, the tail end of the crank 3031 is connected with a rotating shaft of the ascending and descending right-angle motor 301 in a transmission mode, the slider 3033 is vertically arranged and is connected with the sensor ascending and descending fixing frame 304 in a sliding mode in the vertical direction through a guide rail 3034, the tail end of the slider penetrates through a round hole 1013 arranged on the bottom plate 101, a threaded hole 30331 is formed in the tail end of the slider 3033 and used for mounting a; when the acoustic wave sensor is lowered to engage the wall surface, the lift travel switch 306 contacts the connection of the crank 3031 and the connecting rod 3032. Because the mountable space in sensor lift mount 304 is less, considering the convenience of installation and processing, lift right angle motor 306 and crank 3031 adopt lift right angle motor D type axle 3011 and crank D type hole 30311 to carry out circumference fixed, and the screw is connected with lift right angle motor screw hole 3012 and is carried out axial fixity. As shown in fig. 9.

In order to reduce the weight of the device, ensure the strength of the device and facilitate the processing, the invention adopts aluminum materials.

The device workflow is shown in fig. 2. When the device starts to work, the main power supply is firstly switched on, so that the device enters a standby working state. Pressing a start button (not shown) may cause the device to enter a duty cycle. In a working period, the lifting right-angle motor 301 rotates positively to drive the slide block 3033 in the crank slide block mechanism 303 to descend, and the sensor fixed on the slide block 3033 descends along with the descending. When the connecting rod 3032 triggers the lifting travel switch 306, the lifting right-angle motor 301 stops rotating, and the sensor is tightly attached to the wall surface. Thereafter, the first knocking mechanism is operated as shown in fig. 3. The knocking right-angle motor 201 rotates forward to drive the spring piece fixing block 202, the fixed spring piece 203 and the tail end knocking spring piece 204 to knock the wall surface. When the tail end knocking spring piece 204 contacts the wall surface, the fixed spring piece 203 triggers the knocking travel switch A206, so that the spring piece right-angle motor 201 rapidly rotates reversely and returns to the initial position. Finally, the lifting right-angle motor 301 rotates reversely to drive the slider 3033 in the crank-slider mechanism 303 to ascend, and the sensor fixed on the slider 3033 also ascends along with the ascending to return to the initial position. And finishing one working cycle, and waiting for pressing the starting button again to enter a new working cycle.

Example 2

As shown in fig. 10 and 12, the wall-tapping sound wave detection apparatus of the present embodiment includes a vehicle body 1, a tapping unit 4, a sensor unit 3, and an electronic control module.

The vehicle body 1, the knocking unit 4, the sensor unit 3, and the electronic control module of the present embodiment are substantially the same as those of embodiment 1. The difference lies in that:

in this embodiment, the driving assembly includes a right-angle motor 4032 and a dial-and-stick mechanism, and the dial-and-stick mechanism is composed of a dial a4035 connected to a rotating shaft of the right-angle motor 4032, and a plurality of sticks 4038 (4 sticks 4038 in this embodiment, a central angle corresponding to two adjacent sticks 4038 is 90 °) uniformly distributed along the circumference of the dial a4035

In this embodiment, the tap block is a tap block B4016.

In this embodiment, the elastic action subassembly includes strikeing pole 4011, strikeing pole swing frame and strikeing spring 40111, strikeing pole 4011 swing joint is on strikeing the pole swing frame, and can swing around strikeing the pole swing frame, it connects on the strikeing pole 4011 that is located strikeing pole swing frame one side to strike block B4016, driver 4038 of driver plate lever mechanism acts on the tip of strikeing pole 4011 of strikeing pole swing frame opposite side, be used for stirring strikeing pole 4011 and drive to strikeing pole 4011 and swing around strikeing pole swing frame, make and strike block B4016 keep away from the wall, strikeing spring 40111 sets up in strikeing pole 4011 top, and strikeing spring 40111 and strikeing the junction of pole 4011 and be located between strikeing pole swing frame and the. The dial plate and dial rod mechanism is driven by a dial rod right-angle motor 4032 to rotate, a dial rod 4038 on the dial plate A4035 dials the knocking rod 4011 and drives the knocking rod 4011 to swing around the knocking rod swing frame and enable the knocking block B4016 to be far away from the wall surface, the knocking spring 4011 extends when the knocking rod 4011 is dialed by the dial rod 4038, and the knocking rod 4011 is driven to reversely swing through contraction when the dial rod 4038 continuously rotates to be separated from the knocking rod 4011 and enable the knocking block B4016 to knock the wall surface; the automobile body 1 is further provided with a knocking travel switch B4024, the knocking travel switch B4024 is located above the knocking rod, when the knocking block B4016 knocks the wall surface, the knocking travel switch B4024 is in contact with the knocking rod 4011, the controller controls the deflector rod right-angle motor 4032 to stop rotating in a delayed mode, before the deflector rod right-angle motor 4032 stops rotating, the knocking rod 4011 is poked through the adjacent deflector rod 4038 in the rotating direction and drives the knocking rod 4011 to swing to the initial position, the knocking block B4016 is separated from the wall surface, and preparation for next knocking is well made.

The tapping rod 4011 in this embodiment is connected to the vehicle body through a tapping rod mechanism 401, and the tapping rod mechanism 401 includes a tapping rod bearing 4012, a shaft 4013, a limit angle 4014, and a tapping adjustment block 4015, as shown in fig. 13. The tapping rod bearing 4012 and the spacing angle 4014 are connected to the base plate 101. The limiting angle steel 4014 has a limiting effect on the knocking rod 4011 and prevents the knocking rod from shaking left and right. The shaft 4013 is connected to a tapping rod 4011 and a tapping rod bearing 4012. The tapping rod 4011 can freely rotate around the tapping rod bearing 4012 to realize tapping. In order to adjust the knocking force, the position of the knocking block B4016 in the length direction of the knocking lever 4011 is adjustable, and as shown in fig. 14, three sets of bolts and nuts clamp the knocking adjustment block 4015. The tail ends of the two bolts are connected with threaded holes in the knocking rod 4011, and the knocking rod 4011 can stretch and retract so as to adjust the position of the knocking adjusting block 4015. The other bolt end is connected with a threaded hole on the knocking block B4016, so that the knocking block B4016 and the knocking adjusting block 4015 are kept in fixed relative positions.

The tapping travel switch B4024 in the present embodiment is fixed to the base plate 101 by the travel switch fixing mechanism 402, as shown in fig. 13. Travel switch fixing mechanism 402 includes travel switch B fixing bracket 4021, travel switch B fixing channel steel 4022, and travel switch B fixing angle steel 4023. Travel switch B mount 4021 is fixed on bottom plate 101, and in order to improve the strength of travel switch B mount 4021 and ensure the convenience of installation of other parts in travel switch fixing mechanism 402, travel switch B mount 4021 adopts a U-shaped bridge structure. The travel switch B fixing bracket 4021 is connected with the base plate 101 and a travel switch B fixing channel 4022 through bolts and nuts. Travel switch B fixes channel-section steel 4022 and is connected with travel switch B fixes angle steel 4023. When the position of the knocking adjusting block 4015 is changed, the position of the knocking rod 4011 for knocking the wall surface at each time is changed, and the position of the knocking travel switch B4024 is also changed correspondingly, so that a U-shaped groove is formed in the fixed channel steel 4022 of the travel switch B, and the fixed angle steel 4023 of the travel switch B can move. And the knocking travel switch B4024 is connected with a travel switch B fixing angle steel 4023 and is used for detecting whether knocking is finished or not.

As shown in fig. 15, the dial and toggle mechanism is connected to the vehicle body 1 through a toggle fixing mechanism 403, the toggle fixing mechanism 403 includes a toggle fixing bracket 4031, a coupling 4033, a bearing support 4034, a dial a bearing 4036 and a transmission shaft 4037, and in order to improve the strength of the toggle fixing bracket 4031 and ensure the convenience of mounting other parts in the toggle fixing mechanism 403, the toggle fixing bracket 4031 adopts a U-shaped bridge structure. The shift lever fixing bracket 4031 and the bearing support bracket 4034 are fixed on the bottom plate 101. The dial right-angle motor 4032 is connected with the dial holder 4031 and is used for rotating the dial 4038 and the dial 4035. And the coupling 4033 is connected with an output shaft of the deflector rod right-angle motor 4032 and a transmission shaft 4037. And the inner ring and the outer ring of the dial A bearing 4036 are respectively connected with the transmission shaft 4037 and the bearing support 4034 through interference fit. And 4 small round holes 40351 are uniformly distributed on the circumference of the inner ring of the dial 4035 and are connected with the transmission shaft 4037 through bolts and nuts. The outer ring of the dial 4035 is uniformly distributed with 4 large round holes 40352 on the circumference, and is connected with another dial 4035 through bolts and nuts, and sleeves are sleeved on the bolts to form a shift lever 4038 for shifting the knocking rod 4011.

And small round holes are formed in the knocking rod 4011 and the travel switch B fixing frame 4021 and used for installing a knocking spring 40111.

The device workflow is shown in fig. 2. When the device starts to work, the main power supply is firstly switched on, so that the device enters a standby working state. Pressing a start button (not shown) may cause the device to enter a duty cycle. In a working period, the lifting right-angle motor 301 rotates positively to drive the slide block 3033 in the crank slide block mechanism 303 to descend, and the sensor fixed on the slide block 3033 descends along with the descending. When the connecting rod 3032 triggers the lifting travel switch 306, the lifting right-angle motor 301 stops rotating, and the sensor is tightly attached to the wall surface. After that, the knocking unit 4 operates. As shown in fig. 11 and 12, the stick right-angle motor 4032 rotates, and the tapping rod 4011 is pushed forward by the current stick 40381, and the tapping spring 40111 is stretched. When the knocking rod 4011 is separated from the current shift lever 40381, the knocking rod is quickly reversed under the action of spring tension force, the knocking block B4016 knocks the wall surface, and meanwhile, the knocking travel switch B4024 is triggered, so that the shift lever right-angle motor 4032 stops rotating after a certain delay. Before the dial right-angle motor 4032 stops rotating, the tapping rod 4011 is moved back to the initial position by the dial 40382, and the tapping block B4016 is moved away from the wall surface. Finally, the lifting right-angle motor 301 rotates reversely to drive the slider 3033 in the crank-slider mechanism 303 to ascend, and the sensor fixed on the slider 3033 also ascends along with the ascending to return to the initial position. And finishing one working cycle, and waiting for pressing the starting button again to enter a new working cycle.

Example 3

As shown in fig. 16, the wall-knocking sound wave detecting device of the present embodiment includes a vehicle body 1, a knocking unit 5, a sensor unit 3, and an electronic control module.

The vehicle body 1, the knocking unit 5, the sensor unit 3, and the electronic control module of the present embodiment are substantially the same as those of embodiment 1. The difference lies in that:

in this embodiment, the driving component includes a dial block right-angle motor a503 and a dial block mechanism, and the dial block mechanism is composed of a dial B502 connected to a rotating shaft of the dial block right-angle motor a503 and a plurality of dial blocks a501 uniformly distributed along the circumferential direction of the dial B502 (in this embodiment, 4 dial blocks a501, and the central angle corresponding to two adjacent dial blocks a501 is 90 °).

The tapping block in this embodiment is a tapping block C507.

The elastic action component in the embodiment comprises a two-section knocking rod, a knocking rod swinging frame, a limiting gasket A508 and a compression spring A504, wherein the two-section knocking rod consists of a rigid rod section 505 and an elastic rod section 506 which are sequentially connected, the rigid rod section 505 is movably connected on the knocking rod swinging frame, and can swing around the knocking rod swing frame, the knocking block C is connected with the tail end of the elastic rod section 506, the shifting block A501 of the dial-shifting block mechanism acts on the end part of the rigid rod section 505, used for shifting the two-section knocking rod and driving the two-section knocking rod to swing around the knocking rod swing frame and enable the knocking block C507 to knock the wall surface, the compression spring A504 is arranged above the rigid rod section 505, and the connection of compression spring a504 to rigid rod section 505 is between the rapping rod swing frame and the dial-block mechanism, and a spacing washer a508 is disposed above rigid rod section 505 and between resilient rod section 506 and the rapping rod swing frame.

The dial block shifting mechanism is driven by a block shifting right-angle motor to rotate, a shifting block A501 on a dial B502 shifts a rigid rod section 505 and drives a two-section knocking rod to swing around a knocking rod swinging frame, a compression spring A504 contracts when the shifting block A501 shifts the rigid rod section 505, when the tail end of the rigid rod section 505 is separated from the shifting block A501, the rigid rod section 505 continuously swings under the inertia effect, and a knocking block C507 is thrown to the wall surface through an elastic rod section 506 to realize knocking, after the knocking, the rigid rod section 505 reversely swings under the effect of the compression spring 504 to make the knocking block C507 separated from the wall surface, when the rigid rod section 505 reversely swings to be in contact with a limit gasket A508, the two-section knocking rod resets, and the preparation for next knocking is made.

In the initial state of the present embodiment, the compression spring a504 is in a compressed state, and the limiting effect of the limiting pad a508 prevents the rigid rod segment 505 from rotating. In each working cycle, the dial A503 drives the dial B502 and the dial A501 to rotate 1/4 circles clockwise. Toggle block a5011 first toggles the end of rigid pole section 505 so that it rotates counterclockwise and compression spring a504 is compressed. When the tail end of the rigid rod section 505 is separated from the toggle block A5011, the rigid rod section 505 continues to rotate anticlockwise under the action of inertia, and meanwhile, the knocking block C507 is thrown to the wall surface by the elasticity of the elastic rod section 506, so that knocking is realized. After the knocking is finished, the rigid rod section 505 rapidly rotates clockwise under the pressure of the compression spring A504, and the knocking block C507 is separated from the wall surface. The rigid pole segment 505 eventually contacts a spacing washer a 508. The cushioning effect of the toggle block a508 stabilizes the rigid rod segment 505 in the initial position awaiting the next stroke.

Example 4

As shown in fig. 17, the wall-surface-hitting sound wave detection apparatus of the present embodiment includes a vehicle body 1, a hitting unit 6, a sensor unit 3, and an electronic control module.

The vehicle body 1, the knocking unit 6, the sensor unit 3, and the electronic control module of the present embodiment are substantially the same as those of embodiment 1. The difference lies in that:

in this embodiment, the driving assembly includes a dial right-angle motor B603 and a dial mechanism; the dial-block shifting mechanism is composed of a dial C602 connected with the rotating shaft of a block-shifting right-angle motor B603 and a plurality of shifting blocks B601 uniformly distributed along the circumference of the dial C602 (4 shifting blocks B601 in the embodiment, and the central angle corresponding to two adjacent shifting blocks B601 is 90 °).

The tap block in this embodiment is a tap block D610.

The elastic action assembly in the embodiment comprises a sliding sleeve 604, an I-shaped member 605, an elastic rod 609, a compression spring B606, a limit gasket B607 and a limit spring piece 608, wherein the I-shaped member 605 consists of a waist part and baffles connected to two ends of the waist part, the waist part is vertically arranged, the compression spring B606 is arranged below the I-shaped member 605 and is positioned between the baffles at the bottom end of the I-shaped member 605 and the vehicle body 1, the limit gasket B607 is arranged above the baffles at the top end of the I-shaped member 605 and is matched with the compression spring B606 to limit the I-shaped member 605, the sliding sleeve 604 is sleeved on the waist part of the I-shaped member 605, the baffles at two ends of the I-shaped member 605 are used for driving the sliding sleeve 604 to move up and down, the limit spring piece 608 laterally acts on the sliding sleeve 604 and is used for limiting the sliding sleeve 604 and enabling a gap to be separated from the baffles at two ends, the knocking block D610 is arranged at the tail end of the elastic rod 609, and the shifting block B601 of the dial shifting block mechanism acts on the edge of a baffle at the top end of the I-shaped part 605 and is used for shifting the I-shaped part 605 to enable the I-shaped part 605 to move downwards, and the baffle at the top of the I-shaped part 605 drives the sliding sleeve 604 to move downwards to overcome the limit of the limit spring piece 608 on the sliding sleeve 604.

The dial block shifting mechanism is driven by a block right-angle motor B603 to rotate, one block B601 on the dial C602 shifts the edge of the baffle plate at the top of the I-shaped part 605, the I-shaped part 605 moves downwards and enables a compression spring B606 to contract, the baffle plate at the top of the I-shaped part 605 drives a sliding sleeve 604 to move downwards after contacting the sliding sleeve 604, and overcomes the limit of the limit spring piece 608 to the sliding sleeve 604, at this time, the edge of the I-shaped piece 605 is separated from the shifting block 601, the I-shaped piece 605 and the sliding sleeve 604 continue to move downwards under the inertia effect, the knocking block D610 is thrown to the wall surface through the elastic rod 609 to realize knocking, after knocking, the compression spring B606 pushes the I-shaped piece 605 to ascend, the baffle plate at the bottom end of the I-shaped piece 605 drives the sliding sleeve 604 to ascend after contacting the sliding sleeve 604, and the limiting spring piece 608 is enabled to restore the limiting to the sliding sleeve 604, and the I-shaped piece 605 resets when the baffle at the top end of the I-shaped piece 605 contacts the limiting gasket B607 and is ready for the next knocking.

Furthermore, in this embodiment, the limiting spring piece 608 includes a vertically disposed spring piece body and a triangular pushing block disposed on the spring piece body and facing the side of the sliding sleeve, and the sliding sleeve 604 is provided with a triangular protrusion matching with the triangular pushing block. Not only can play a limiting role, but also can play a pushing role.

In the initial state, the compression spring B6606 is in a compressed state, the limiting function of the limiting gasket B607 prevents the I-shaped member 605 from moving, and the limiting function of the limiting spring piece 608 prevents the sliding sleeve 604 from moving. In each working cycle, the dial block right-angle motor B603 drives the dial C602 and the dial block B601 to rotate 1/4 circles counterclockwise. Toggle block 6011 first contacts the top of the tooling member 604 causing it to move downward and compression spring B606 is compressed. When the top stop of the profile 605 contacts the sliding sleeve 604, the sliding sleeve 604 also descends with it and the limiting spring leaf 608 deforms to the left. When the point a on the sliding sleeve 604 goes over the point b on the limiting spring piece 608 from the top to the bottom, the toggle block 6011 is disengaged from the profile piece 605, and the limiting spring piece 608 returns to the right and pushes the sliding sleeve 604 to descend further. Under the action of inertia, the workpiece 605 and the sliding sleeve 604 continue to descend, and meanwhile, the knocking block 610 is thrown to the wall surface by the elasticity of the elastic rod 609, so that knocking is realized. After the strike is complete, the pressure of the spring 606 quickly raises the form 605. When the baffle at the bottom of the profile 605 contacts the sliding sleeve 604, the sliding sleeve 604 also rises. Finally, the point a on the sliding sleeve 604 goes over the point b on the limiting spring piece 608 from bottom to top, and is kept stable under the limiting action of the limiting spring piece 608; the top of the form 605 is in contact with the washer 607, and the cushioning effect of the washer 607 stabilizes the form 605 in the initial position awaiting the next tap.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The utility model provides a wall strikes sound wave detection device which characterized in that includes:

a vehicle body (1) for moving on a wall surface,

the knocking unit is arranged on the vehicle body (1) and comprises a driving component, an elastic action component and a knocking block which are sequentially connected in a transmission manner, the driving component acts on the elastic action component through rotation to drive the elastic action component to act, so that the knocking block knocks a wall surface once in a working period and bounces,

the sensor unit (3) is arranged on the vehicle body (1) and comprises a sound wave sensor and a sensor lifting assembly, the sensor lifting assembly drives the sound wave sensor to descend to be attached to the wall surface before the knocking block knocks the wall surface and drives the sound wave sensor to reset after knocking is finished,

the controller is used for controlling the actions of the knocking unit and the sensor unit;

sensor lifting unit include sensor lift mount (304), lift right angle motor (301), slider-crank mechanism (303) and lift travel switch (306), sensor lift mount (304) set up on automobile body (1), lift right angle motor (301) are fixed in on sensor lift mount (304), slider-crank mechanism (303) one end is connected with lift right angle motor (301) transmission, the other end is connected with the sound wave sensor, when the sound wave sensor descends to laminating with the wall, lift travel switch (306) contact with slider-crank mechanism (303), the sound wave sensor stops to descend.

2. A wall-striking sound wave detecting device according to claim 1, wherein said driving unit is a spring plate right-angle motor (201) fixed on the vehicle body; the knocking block is a knocking block A (2041); the elastic action component is a strip-shaped spring piece, one end of the strip-shaped spring piece is fixedly connected with a rotating shaft of the spring piece right-angle motor (201), so that the strip-shaped spring piece can swing in a plane vertical to the rotating shaft of the spring piece right-angle motor (201) along with the rotation of the rotating shaft of the spring piece right-angle motor (201), and the other end of the strip-shaped spring piece is connected with the knocking block A (2041); still be equipped with on automobile body (1) and strike travel switch A (206), when spring leaf right angle motor (201) drive the bar spring leaf and swing to strike piece A (2041) and strike the wall face, bar spring leaf contacts with striking travel switch A (206), and spring leaf right angle motor (201) drives bar spring leaf reverse swing under the control of controller, makes and strikes piece A (2041) and breaks away from the wall to the preparation of striking next time is well done.

3. The wall surface knocking sound wave detection device according to claim 2, wherein the strip-shaped spring piece is composed of a fixed spring piece (203) and a tail end knocking spring piece (204) which are detachably connected, the fixed spring piece (203) is fixedly connected with a rotating shaft of a spring piece right-angle motor (201), and the knocking block A (2041) is arranged at the tail end of the tail end knocking spring piece (204); when the spring piece right-angle motor (201) drives the strip-shaped spring piece to swing to the knocking block A (2041) to knock the wall surface, the fixed spring piece (203) is in contact with the knocking travel switch A (206).

4. The wall surface knocking sound wave detection device according to claim 1, wherein the driving assembly comprises a dial right-angle motor (4032) and a dial-and-lever mechanism, the dial-and-lever mechanism is composed of a dial A (4035) connected with a rotating shaft of the dial right-angle motor (4032) and a plurality of dials (4038) uniformly distributed along the circumferential direction of the dial A (4035); the knocking block is a knocking block B (4016); the elastic action assembly comprises a knocking rod (4011), a knocking rod swinging frame and a knocking spring (40111), the knocking rod (4011) is movably connected to the knocking rod swinging frame and can swing around the knocking rod swinging frame, the knocking block B (4016) is connected to the knocking rod (4011) on one side of the knocking rod swinging frame, a shifting rod (4038) of the dial plate shifting rod mechanism acts on the end portion of the knocking rod (4011) on the other side of the knocking rod swinging frame and is used for shifting the knocking rod (4011) and driving the knocking rod (4011) to swing around the knocking rod swinging frame, so that the knocking block B (4016) is far away from the wall surface, the knocking spring (40111) is arranged above the knocking rod (4011), and the joint of the knocking spring (40111) and the knocking rod (4011) is located between the knocking rod swinging frame and the dial plate shifting mechanism;

the dial plate and dial rod mechanism is driven by a dial rod right-angle motor (4032) to rotate, a dial rod (4038) on the dial plate A (4035) dials the knocking rod (4011), and drives the knocking rod (4011) to swing around the knocking rod swing frame and enable the knocking block B (4016) to be far away from the wall surface, the knocking spring (40111) extends when the dial rod (4038) dials the knocking rod (4011), and the knocking rod (4011) is driven to reversely swing through contraction when the dial rod (4038) continues to rotate until the dial rod (4038) is separated from the knocking rod (4011), and the knocking block B (4016) is made to knock the wall surface; still be equipped with on automobile body (1) and strike travel switch B (4024), when the piece B (4016) of strikeing strikes the wall, strike travel switch B (4024) and strike pole (4011) contact, the time delay stall of controller control driving lever right angle motor (4032) to before driving lever right angle motor (4032) stall, stir through adjacent driving lever (4038) in the direction of rotation and strike pole (4011) and drive and strike pole (4011) and swing to initial position, make and strike piece B (4016) break away from the wall, and the preparation of striking next time.

5. The wall surface knocking sound wave detection device according to claim 4, wherein the position of the knocking block B (4016) in the length direction of the knocking rod (4011) is adjustable, and the knocking travel switch B (4024) is located above the knocking rod.

6. The wall surface knocking sound wave detection device as claimed in claim 1, wherein the driving assembly comprises a dial block right-angle motor A (503) and a dial block mechanism, the dial block mechanism is composed of a dial B (502) connected with a rotating shaft of the dial block right-angle motor A (503) and a plurality of dial blocks A (501) uniformly distributed along the circumferential direction of the dial B (502); the knocking block is a knocking block C (507); the elastic action component comprises a two-section type knocking rod, a knocking rod swinging frame, a limiting gasket A (508) and a compression spring A (504), the two-section type knocking rod consists of a rigid rod section (505) and an elastic rod section (506) which are sequentially connected, the rigid rod section (505) is movably connected to the knocking rod swinging frame and can swing around the knocking rod swinging frame, a knocking block C is connected to the tail end of the elastic rod section (506), a shifting block A (501) of a dial plate shifting block mechanism acts on the end part of the rigid rod section (505) and is used for shifting the two-section type knocking rod and driving the two-section type knocking rod to swing around the knocking rod swinging frame and enable the knocking block C (507) to knock a wall surface, the compression spring A (504) is arranged above the rigid rod section (505), and the connection part of the compression spring A (504) and the rigid rod section (505) is positioned between the knocking rod swinging frame and the dial plate shifting block mechanism, the limiting gasket A (508) is arranged above the rigid rod section (505) and is positioned between the elastic rod section (506) and the knocking rod swinging frame;

the dial block shifting mechanism is driven by a block shifting right-angle motor to rotate, a shifting block A (501) on a dial B (502) shifts a rigid rod section (505) and drives a two-section knocking rod to swing around a knocking rod swinging frame, a compression spring A (504) contracts when the shifting block A (501) shifts the rigid rod section (505), when the tail end of the rigid rod section (505) is separated from the shifting block A (501), the rigid rod section (505) continuously swings under the action of inertia, a knocking block C (507) is thrown to a wall surface through an elastic rod section (506) to realize knocking, after knocking, the rigid rod section (505) reversely swings under the action of the compression spring A (504) to enable the knocking block C (507) to be separated from the wall surface, when the rigid rod section (505) reversely swings to be in contact with a limiting gasket A (508), the two-section knocking rod resets, and preparation for next knocking is well made.

7. The wall surface knocking sound wave detection device as claimed in claim 1, wherein the driving assembly comprises a dial right-angle motor B (603) and a dial mechanism; the dial and dial block mechanism consists of a dial C (602) connected with a rotating shaft of a dial block right-angle motor B (603) and a plurality of dial blocks B (601) uniformly distributed along the circumferential direction of the dial C (602); the knocking block is a knocking block D (610); the elastic action assembly comprises a sliding sleeve (604), an I-shaped piece (605), an elastic rod (609), a compression spring B (606), a limiting gasket B (607) and a limiting spring piece (608), the I-shaped piece (605) consists of a waist part and baffle plates connected to two ends of the waist part, the waist part is vertically arranged, the compression spring B (606) is arranged below the I-shaped piece (605) and between the baffle plate at the bottom end of the I-shaped piece (605) and the vehicle body (1), the limiting gasket B (607) is arranged above the baffle plate at the top end of the I-shaped piece (605) and is matched with the compression spring B (606) to limit the I-shaped piece (605), the sliding sleeve (604) is sleeved on the waist part of the I-shaped piece (605), the baffle plates at two ends of the I-shaped piece (605) are used for driving the sliding sleeve (604) to move up and down, the limiting spring piece (608) acts on the sliding sleeve (, a gap is formed between the sliding sleeve (604) and the baffles at the two ends of the I-shaped piece (605) in a natural state, the elastic rod (609) is horizontally connected to the side surface of the sliding sleeve (604), the knocking block D (610) is arranged at the tail end of the elastic rod (609), the shifting block B (601) of the dial shifting block mechanism acts on the edge of the baffle at the top end of the I-shaped piece (605) and is used for shifting the I-shaped piece (605) to enable the I-shaped piece (605) to move downwards, the baffle at the top of the I-shaped piece (605) drives the sliding sleeve (604) to move downwards, and the limit of the limiting spring piece (608) on the sliding sleeve (604) is overcome;

the dial block shifting mechanism is driven by a block shifting right-angle motor B (603) to rotate, a block shifting B (601) on a dial plate C (602) shifts the edge of a baffle plate at the top of a workpiece (605), the workpiece (605) moves downwards and enables a compression spring B (606) to contract, the baffle plate at the top of the workpiece (605) drives a sliding sleeve (604) to move downwards after contacting the sliding sleeve (604), the limit of a limit spring leaf (608) on the sliding sleeve (604) is overcome, the edge of the workpiece (605) is separated from the block shifting B (601), the workpiece (605) and the sliding sleeve (604) continue to move downwards under the inertia effect, a knocking block D (610) is thrown to the wall surface through an elastic rod (609) to realize knocking, after the knocking, the compression spring B (606) pushes the workpiece (605) to rise, the baffle plate at the bottom end of the workpiece (605) drives the sliding sleeve (604) to rise after contacting the sliding sleeve (604), and the limiting spring piece (608) is enabled to restore the limiting to the sliding sleeve (604), and the H-shaped piece (605) resets when the baffle at the top end of the H-shaped piece (605) contacts the limiting gasket B (607), and the next knocking preparation is ready.

8. The wall surface knocking sound wave detection device according to claim 7, wherein the limiting spring piece (608) comprises a vertically arranged spring piece body and a triangular push block arranged on the spring piece body and facing the side surface of the sliding sleeve, and a triangular protrusion matched with the triangular push block is arranged on the sliding sleeve (604).

9. The wall surface knocking sound wave detection device is characterized in that the crank-slider mechanism (303) comprises a crank (3031), a connecting rod (3032) and a slider (3033) which are sequentially connected in a transmission manner, the tail end of the crank (3031) is connected with a rotating shaft of a lifting right-angle motor (301) in a transmission manner, the slider (3033) is vertically arranged and is connected with a sensor lifting fixing frame (304) in a sliding manner in the vertical direction through a guide rail (3034), and the sound wave sensor is arranged at the tail end of the slider (3033); when the sound wave sensor descends to be attached to the wall surface, the lifting travel switch (306) is in contact with the connecting position of the crank (3031) and the connecting rod (3032).