阅读说明：本技术 一种可根据声音自动检测铁路轨道的装置 (Device capable of automatically detecting railway track according to sound ) 是由 豆俊路 于 2021-01-05 设计创作，主要内容包括：本发明涉及导轨相关领域,公开了一种可根据声音自动检测铁路轨道的装置,包括主箱体,主箱体内设有开口向下的导轨滑动腔,导轨滑动腔的上侧连通设有传动腔,导轨滑动腔的左侧连通设有检修锤腔,检修锤腔的上侧连通设有把手转动腔,把手转动腔的后侧设有锥齿轮腔,传动腔的右侧设有向后延伸至锥齿轮腔右侧的带轮腔,导轨滑动腔的右侧设有离心轮腔,通过将检修锤敲击铁轨的声音由声波转化成电信号,后再将电信号放大转化成电流,再将电流产生的电能大小转换成可以使离心轮转动快慢的机械能,实现了沿铁轨自动敲击检测,达到了更为精确的检测效果,同时可以根据不同材质的铁轨手动设置声波的正常波动范围,从而提高了装置的泛用性。(The invention relates to the field of guide rails, and discloses a device capable of automatically detecting a railway track according to sound, which comprises a main box body, wherein a guide rail sliding cavity with a downward opening is arranged in the main box body, the upper side of the guide rail sliding cavity is communicated with a transmission cavity, the left side of the guide rail sliding cavity is communicated with an overhauling hammer cavity, the upper side of the overhauling hammer cavity is communicated with a handle rotating cavity, the rear side of the handle rotating cavity is provided with a bevel gear cavity, the right side of the transmission cavity is provided with a belt wheel cavity extending backwards to the right side of the bevel gear cavity, the right side of the guide rail sliding cavity is provided with a centrifugal wheel cavity, the sound generated by the overhauling hammer knocking the rail is converted into an electric signal through sound waves, then the electric signal is amplified and converted into current, the electric energy generated by the current is converted into mechanical energy capable of enabling the centrifugal wheel to rotate slowly, the automatic knocking detection along the rail is realized, the more accurate detection effect is achieved, thereby improving the versatility of the device.)

1. The utility model provides a can be according to device of sound automated inspection railway rails, includes the main tank body, its characterized in that: a guide rail sliding cavity with a downward opening is arranged in the main box body, a transmission cavity is communicated with the upper side of the guide rail sliding cavity, an overhaul hammer cavity is communicated with the left side of the guide rail sliding cavity, a handle rotating cavity is communicated with the upper side of the overhaul hammer cavity, a bevel gear cavity is arranged on the rear side of the handle rotating cavity, a belt wheel cavity extending backwards to the right side of the bevel gear cavity is arranged on the right side of the transmission cavity, a centrifugal wheel cavity is arranged on the right side of the guide rail sliding cavity, a guide rail is connected in the guide rail sliding cavity in a sliding fit manner, a friction wheel shaft extending rightwards to the right end wall of the transmission cavity is connected in a rotating fit manner in the left end wall of the transmission cavity, a friction wheel capable of abutting against a semi-friction wheel is fixedly connected onto the friction wheel shaft, a rotation sensor is fixedly connected into the friction wheel shaft, a spray pen is fixedly connected onto the upper end wall, the front end wall of the handle rotating cavity is connected with a rear bevel gear shaft which extends backwards into the bevel gear cavity in a rotating matching way, the rear side bevel gear shaft is fixedly connected with an overhauling hammer handle which extends downwards into the overhauling hammer cavity, the tail end of the lower side of the maintenance hammer handle is fixedly connected with a maintenance hammer head, the left end wall of the transmission cavity is rotationally and cooperatively connected with a semi-gear shaft which extends rightwards into the belt wheel cavity, a semi-friction wheel which can be meshed with the friction wheel is fixedly connected on the semi-gear shaft and is positioned in the transmission cavity, the right end wall of the guide rail sliding cavity is internally and fixedly connected with an acoustoelectric transducer, the right end face of the acoustoelectric transducer is fixedly connected with an electric signal amplifier, the right side of the electric signal amplifier is provided with a small direct current motor, the electric signal amplifier is connected with the small direct current motor through an electric wire, the upper end face of the small direct current motor is fixedly connected with a centrifugal wheel shaft which extends upwards into the centrifugal wheel cavity.

2. The apparatus for automatically detecting a railroad track according to sound of claim 1, wherein: the rear end of the rear side bevel gear shaft is fixedly connected with a rear side bevel gear in the bevel gear cavity, a transmission motor is fixedly connected with the right side of the main box body, which is positioned above the belt wheel cavity, the left end surface of the transmission motor is fixedly connected with a right bevel gear shaft which extends leftwards and penetrates through the belt wheel cavity to the bevel gear cavity, the left end of the right bevel gear shaft is in spline fit connection with a bevel gear shaft sleeve, the outer end face of the bevel gear shaft sleeve is fixedly connected with a right bevel gear which can be meshed with the rear bevel gear, the right end of the bevel gear shaft sleeve is connected with a base magnet in a rotating fit manner, a bevel gear spring is fixedly connected between the right end surface of the base magnet and the right end wall of the bevel gear cavity, and a built-in electromagnet which can correspond to the base magnet is fixedly connected in the right end wall of the bevel gear cavity.

3. The apparatus for automatically detecting a railroad track according to sound of claim 2, wherein: the belt wheel structure is characterized in that an upper side belt wheel is fixedly connected to the right side bevel gear shaft and located in a belt wheel cavity, a lower side belt wheel is fixedly connected to the right side end of the half gear shaft, a conveying belt is connected between the upper side belt wheel and the lower side belt wheel in a power fit mode, a sliding cavity is formed in the right side of the belt wheel cavity in a communicated mode, a tightening block capable of tightening the conveying belt is connected in the sliding cavity in a sliding fit mode, and a connecting spring is fixedly connected between the right end face of the tightening block and the right end wall of the sliding.

4. The apparatus for automatically detecting a railroad track according to sound of claim 1, wherein: the centrifugal wheel is fixedly connected with the end of the upper side of the centrifugal wheel shaft, two swinging cavities with outward openings and bilateral symmetry are arranged in the centrifugal wheel, a swinging block is connected in a sliding fit mode in the swinging cavities, the end face of the swinging block, which is close to the centrifugal wheel shaft, and the end wall of the swinging cavity, which is close to the centrifugal wheel shaft, are fixedly connected with swinging block springs, a butt plate is connected in the centrifugal wheel cavities in a sliding fit mode, a butt plate spring is fixedly connected between the left end face of the butt plate and the left end wall of the centrifugal wheel cavity, and a corresponding trigger electromagnet is fixedly connected in the left end wall of the magnetic butt plate.

5. A4-device according to claim 4, characterized in that: the left end wall normal running fit in centrifugal wheel chamber is connected with and extends to run through right centrifugal wheel chamber to external regulation pole, the fixed commentaries on classics piece of the terminal fixedly connected with in right side of regulation pole, sliding fit is connected with sliding base, left side on the lower extreme wall in centrifugal wheel chamber sliding base's upside fixedly connected with left side trigger button, right side sliding base's upside fixedly connected with right side trigger button, left side trigger button with about being equipped with in the right side trigger button the screw-thread fit chamber that link up, forward screw-thread fit is connected with left side trigger button on the regulation pole, reverse screw-thread fit is connected with right side trigger button on the regulation pole, the left end face of butt joint plate with fixedly connected with control stay cord between the right-hand member face of tight piece.

Technical Field

The invention relates to the field of guide rails, in particular to a device capable of automatically detecting a railway track according to sound.

Background

The railway track is exposed to the natural environment after long-term working, and the rail is gradually abraded along with the increase of the running time under the action of the power of the train, so that the railway track must be periodically and periodically maintained and maintained in order to ensure daily running, a maintenance worker uses a maintenance hammer to knock the rail to judge the condition of the rail by sound, so that the common content in maintenance is realized, a large amount of experience accumulation is needed by sound judgment, errors are easily caused, and meanwhile, the maintenance of a section of a long line of the rail is time-consuming and labor-consuming.

Disclosure of Invention

The invention aims to provide a device capable of automatically detecting a railway track according to sound, which can overcome the defects of the prior art and improve the practicability of equipment.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a device capable of automatically detecting railway tracks according to sound, which comprises a main box body, wherein a guide rail sliding cavity with a downward opening is arranged in the main box body, the upper side of the guide rail sliding cavity is communicated with a transmission cavity, the left side of the guide rail sliding cavity is communicated with an overhauling hammer cavity, the upper side of the overhauling hammer cavity is communicated with a handle rotating cavity, the rear side of the handle rotating cavity is provided with a bevel gear cavity, the right side of the transmission cavity is provided with a belt wheel cavity extending backwards to the right side of the bevel gear cavity, the right side of the guide rail sliding cavity is provided with a centrifugal wheel cavity, the guide rail sliding cavity is connected with a guide rail in a sliding fit manner, the left end wall of the transmission cavity is connected with a friction wheel shaft extending rightwards to the right end wall of the transmission cavity in a rotating fit manner, the friction wheel shaft is fixedly connected with a friction wheel capable of abutting against the, the upper end wall of the guide rail sliding cavity is fixedly connected with a spray pen, a spray pen sensor is fixedly connected in the spray pen, the front end wall of the handle rotating cavity is connected with a rear bevel gear shaft which extends backwards into the bevel gear cavity in a rotating fit mode, the rear bevel gear shaft is fixedly connected with an overhauling hammer handle which extends downwards into the overhauling hammer cavity, the lower end of the overhauling hammer handle is fixedly connected with an overhauling hammer head, the left end wall of the transmission cavity is connected with a half gear shaft which extends rightwards into the belt wheel cavity in a rotating fit mode, the half gear shaft is fixedly connected with a half friction wheel which can be meshed with the friction wheel and is positioned in the transmission cavity, the right end wall of the guide rail sliding cavity is fixedly connected with an acoustic-electric converter, the right end face of the acoustic-electric converter is fixedly connected with an electric signal amplifier, and the right side of the electric signal amplifier is provided with a, the electric signal amplifier is connected with the small direct current motor through an electric wire, and the upper end face of the small direct current motor is fixedly connected with a centrifugal wheel shaft which extends upwards into the centrifugal wheel cavity.

On the basis of the technical scheme, the rear end of the rear bevel gear shaft, which is positioned in the bevel gear cavity, is fixedly connected with a rear bevel gear, a transmission motor is fixedly connected with the right side of the main box body, which is positioned above the belt wheel cavity, the left end surface of the transmission motor is fixedly connected with a right bevel gear shaft which extends leftwards and penetrates through the belt wheel cavity to the bevel gear cavity, the left end of the right bevel gear shaft is in spline fit connection with a bevel gear shaft sleeve, the outer end face of the bevel gear shaft sleeve is fixedly connected with a right bevel gear which can be meshed with the rear bevel gear, the right end of the bevel gear shaft sleeve is connected with a base magnet in a rotating fit manner, a bevel gear spring is fixedly connected between the right end surface of the base magnet and the right end wall of the bevel gear cavity, and a built-in electromagnet which can correspond to the base magnet is fixedly connected in the right end wall of the bevel gear cavity.

On the basis of the technical scheme, the right bevel gear shaft is fixedly connected with an upper belt pulley in the belt pulley cavity, the right end of the half gear shaft is fixedly connected with a lower belt pulley, the upper belt pulley and the lower belt pulley are connected with a conveying belt in a power fit mode, the right side of the belt pulley cavity is communicated with a sliding cavity, a tightening block capable of tightening the conveying belt is connected in the sliding cavity in a sliding fit mode, and a connecting spring is fixedly connected between the right end face of the tightening block and the right end wall of the sliding cavity.

On the basis of the technical scheme, a centrifugal wheel is fixedly connected to the tail end of the upper side of the centrifugal wheel shaft, two swinging cavities with outward openings and bilateral symmetry are arranged in the centrifugal wheel, a swinging block is connected in a sliding fit mode in the swinging cavities, a swinging block spring is fixedly connected between the end face, close to the centrifugal wheel shaft, of the swinging block and the end wall, close to the centrifugal wheel shaft, of the swinging cavity, a butt plate is connected in the centrifugal wheel cavity in a sliding fit mode, a butt plate spring is fixedly connected between the left end face of the butt plate and the left end wall of the centrifugal wheel cavity, and a corresponding trigger electromagnet is fixedly connected in the left end wall of the magnetic butt plate.

On the basis of the technical scheme, the left end wall normal running fit in centrifugal wheel chamber is connected with and extends to the right and runs through centrifugal wheel chamber to external regulation pole, the fixed commentaries on classics piece of the terminal fixedly connected with in right side of regulation pole, sliding fit is connected with sliding bottom on the lower terminal wall in centrifugal wheel chamber, left side sliding bottom's upside fixedly connected with left side trigger button, right side sliding bottom's upside fixedly connected with right side trigger button, left side trigger button with the screw-thread fit chamber that link up about being equipped with in the right side trigger button, forward screw-thread fit is connected with left side trigger button on the regulation pole, reverse screw-thread fit is connected with right side trigger button on the regulation pole, the left end face of butt joint board with fixedly connected with control stay cord between the right-hand member face of tight.

The invention has the beneficial effects that: the sound of knocking the rail by the overhauling hammer is converted into an electric signal through sound waves, then the electric signal is amplified and converted into current, the electric energy generated by the current is converted into mechanical energy capable of enabling the centrifugal wheel to rotate fast and slowly, automatic knocking detection along the rail is achieved, more accurate detection effects are achieved, meanwhile, the normal fluctuation range of the sound waves can be set manually according to rails made of different materials, and therefore the universality of the device is improved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view showing the overall structure of an apparatus for automatically detecting a railway track according to sound according to the present invention.

Fig. 2 is a schematic sectional view of a-a in fig. 1.

Fig. 3 is an enlarged schematic view of the structure at B in fig. 1.

Fig. 4 is a schematic sectional structure view of C-C in fig. 2.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The device capable of automatically detecting railway tracks according to sound, which is described with reference to fig. 1-4, comprises a main box body 10, a guide rail sliding cavity 15 with a downward opening is arranged in the main box body 10, a transmission cavity 11 is communicated with the upper side of the guide rail sliding cavity 15, an inspection hammer cavity 14 is communicated with the left side of the guide rail sliding cavity 15, a handle rotating cavity 13 is communicated with the upper side of the inspection hammer cavity 14, a bevel gear cavity 29 is arranged on the rear side of the handle rotating cavity 13, a belt wheel cavity 39 extending backwards to the right side of the bevel gear cavity 29 is arranged on the right side of the transmission cavity 11, a centrifugal wheel cavity 56 is arranged on the right side of the guide rail sliding cavity 15, a guide rail 17 is connected in a sliding fit manner in the guide rail sliding cavity 15, a friction wheel shaft 22 extending rightwards to the right end wall of the transmission cavity 11 is connected in a rotating fit manner in the left end wall of the transmission cavity 11, and a friction wheel 20 capable of, the inner part of the friction wheel shaft 22 is fixedly connected with a rotation sensor 21, the upper end wall of the guide rail sliding cavity 15 is fixedly connected with a spray pen 55, the inner part of the spray pen 55 is fixedly connected with a spray pen sensor 23, the front end wall of the handle rotating cavity 13 is connected with a rear bevel gear shaft 31 which extends backwards into the bevel gear cavity 29, the rear bevel gear shaft 31 is fixedly connected with an overhaul hammer handle 12 which extends downwards into an overhaul hammer cavity 14, the lower end of the overhaul hammer handle 12 is fixedly connected with an overhaul hammer head 16, the left end wall of the transmission cavity 11 is connected with a half gear shaft 19 which extends rightwards into the belt wheel cavity 39 in a rotating and matching way, the half gear shaft 19 is fixedly connected with a half friction wheel 18 which can be meshed with the friction wheel 20 and is positioned in the transmission cavity 11, and the right end wall of the guide rail sliding cavity 15 is fixedly connected with an acoustic-electric converter 27, an electric signal amplifier 26 is fixedly connected to the right end face of the sound-electricity converter 27, a small direct current motor 25 is arranged on the right side of the electric signal amplifier 26, the electric signal amplifier 26 is connected with the small direct current motor 25 through an electric wire, and a centrifugal wheel shaft 24 extending upwards into the centrifugal wheel cavity 56 is fixedly connected to the upper end face of the small direct current motor 25.

In addition, in one embodiment, a rear bevel gear 28 is fixedly connected to a rear end of the rear bevel gear shaft 31 and located in the bevel gear cavity 29, a transmission motor 37 is fixedly connected to a right side of the main housing 10 and located above the pulley cavity 39, a left end surface of the transmission motor 37 is fixedly connected to a right bevel gear shaft 36 extending through the pulley cavity 39 to the bevel gear cavity 29 leftward, a left end of the right bevel gear shaft 36 is connected to a bevel gear sleeve 32 in a spline fit manner, a right bevel gear 30 capable of meshing with the rear bevel gear 28 is fixedly connected to an outer end surface of the bevel gear sleeve 32, a base magnet 33 is rotatably connected to a right end of the bevel gear sleeve 32 in a rotation fit manner, a bevel gear spring 34 is fixedly connected between a right end surface of the base magnet 33 and a right end wall of the bevel gear cavity 29, and a built-in electromagnetic coil spring capable of corresponding to the base magnet 33 is fixedly connected to the right end wall of the bevel gear cavity 29 Iron 35.

In addition, in one embodiment, an upper pulley 38 is fixedly connected to the right bevel gear shaft 36 and located in the pulley cavity 39, a lower pulley 42 is fixedly connected to the right end of the half gear shaft 19, a conveyor belt 41 is connected between the upper pulley 38 and the lower pulley 42 in a power fit manner, a sliding cavity 43 is communicated with the right side of the pulley cavity 39, a tightening block 40 capable of tightening the conveyor belt 41 is connected in the sliding cavity 43 in a sliding fit manner, and a connecting spring 45 is fixedly connected between the right end face of the tightening block 40 and the right end wall of the sliding cavity 43.

In addition, in one embodiment, a centrifugal wheel 47 is fixedly connected to the upper end of the centrifugal wheel shaft 24, two swinging cavities 46 with outward openings and left-right symmetry are formed in the centrifugal wheel 47, a swinging block 58 is connected in a sliding fit manner in the swinging cavity 46, a swinging block spring 57 is fixedly connected between the end surface of the swinging block 58 close to the centrifugal wheel shaft 24 and the end wall of the swinging cavity 46 close to the centrifugal wheel shaft 24, a magnetic abutting plate 54 is connected in the centrifugal wheel cavity 56 in a sliding fit manner, an abutting plate spring 53 is fixedly connected between the left end surface of the magnetic abutting plate 54 and the left end wall of the centrifugal wheel cavity 56, and a trigger electromagnet 61 corresponding to the magnetic abutting plate 54 is fixedly connected in the left end wall of the magnetic abutting plate 54.

In addition, in one embodiment, the left end wall of the centrifugal wheel chamber 56 is rotatably connected with an adjusting rod 49 extending through the centrifugal wheel chamber 56 to the outside in a right-handed manner, the right end of the adjusting rod 49 is fixedly connected with a fixed rotating block 48, the lower end wall of the centrifugal wheel cavity 56 is connected with a sliding base 60 in a sliding fit manner, the upper side of the sliding base 60 on the left side is fixedly connected with a left side trigger button 52, the upper side of the sliding base 60 on the right side is fixedly connected with a right side trigger button 50, a left-right through thread matching cavity 51 is arranged in the left-side trigger button 52 and the right-side trigger button 50, a left trigger button 52 is connected on the adjusting rod 49 in a positive thread fit way, a right trigger button 50 is connected on the adjusting rod 49 in a reverse thread fit way, a control pull rope 44 is fixedly connected between the left end face of the magnetic abutting plate 54 and the right end face of the tightening block 40.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

As shown in fig. 1 to 4, when the apparatus of the present invention is in an initial state, the inspection hammer handle 12 and the inspection hammer 16 are in a state of being perpendicular to the ground, the rotation sensor 21 and the pen sensor 23 are not triggered, the small dc motor 25 is in an inactive state, the right bevel gear 30 and the rear bevel gear 28 are in an unengaged state, the internal electromagnet 35 is in an inactive state, the tightening block 40 is in a state of tightening the conveyor belt 41, the abutting plate spring 53 is in a relaxed state, and the triggering electromagnet 61 is in an inactive state;

sequence of mechanical actions of the whole device:

when the main box body 10 starts to work, the guide rail sliding cavity 15 in the main box body 10 is aligned to the upper side of the guide rail 17 and is stably placed, the transmission motor 37 starts to start, the transmission motor 37 starts to drive the right bevel gear shaft 36 to start rotating, so as to drive the right bevel gear 30 and the upper belt wheel 38 to start rotating, the upper belt wheel 38 rotates to drive the conveyor belt 41 to start moving, so as to drive the lower belt wheel 42 to start rotating, the lower belt wheel 42 rotates to drive the half gear shaft 19 to rotate, the half gear shaft 19 rotates to drive the half friction wheel 18 to start rotating, so as to drive the friction wheel 20 to start intermittent motion, and the friction wheel 20 rotates to drive the whole main box body 10 to move forwards along the guide rail 17 by a certain distance;

when the half-friction wheel 18 rotates until no gear is meshed with the friction wheel 20, the friction wheel 20 starts to stop rotating, the rotation sensor 21 sends a signal to trigger the built-in electromagnet 35 to start, the base magnet 33 moves leftwards under the action of the repulsive force of the built-in electromagnet 35 and the elastic force of the bevel gear spring 34, meanwhile, the bevel gear shaft sleeve 32 and the right bevel gear 30 are driven to move leftwards until the right bevel gear 30 is meshed with the rear bevel gear 28, at the moment, the right bevel gear 30 rotates to drive the rear bevel gear 28 to start rotating, the rear bevel gear 28 rotates to drive the rear bevel gear shaft 31 to start rotating, and the rear bevel gear shaft 31 rotates to drive the maintenance hammer handle 12 and the maintenance hammer 16 to start rotating anticlockwise around the rear bevel gear shaft 31;

when the overhauling hammer 16 knocks the guide rail 17, the emitted sound is converted into an electric signal through the sound-electricity converter 27, the electric signal amplifier 26 can amplify the electric signal converted from the sound and then transmit the electric signal to the small-sized direct current motor 25, the electromagnet 61 is triggered to start, the magnetic abutting plate 54 starts to move towards the right under the action of the repulsive force of the electromagnet 61, the small-sized direct current motor 25 can adjust the self rotating speed according to the received electric signal, so that the centrifugal wheel shaft 24 is driven to rotate, the centrifugal wheel shaft 24 rotates to drive the centrifugal wheel 47 to rotate, so that the throwing block 58 is driven to overcome the elastic force of the throwing block spring 57 and be thrown out, and the thrown throwing block 58 pushes the magnetic abutting plate 54 to slide in the centrifugal wheel cavity 56;

if the sound produced by the service hammer 16 striking the guide rail 17 is in the normal range, the magnetic abutment plate 54 will slide between the right trigger button 50 and the left trigger button 52, if the sound generated by the overhauling hammer 16 knocking the guide rail 17 is abnormal sound, two conditions can occur, when the sound is too loud, the mechanical energy generated by the small direct current motor 25 can drive the centrifugal wheel shaft 24 to rotate faster, so that the magnetic abutting plate 54 contacts the left trigger button 52 under the pushing force of the swinging block 58, one end of the control pull rope 44 is loosened, the tensioning block 40 moves leftwards under the elastic force of the connecting spring 45 to loosen the transmission belt 41, thus, the main box 10 stops moving, and after the left trigger button 52 is triggered, the pen sensor 23 is activated, and the pen 55 sprays a tearable paint on the rail 17 to remind the maintainer that a problem may occur on the rail at the position;

when the sound is too small, the mechanical energy generated by the small direct current motor 25 can drive the centrifugal wheel shaft 24 to rotate slowly, so that the magnetic abutting plate 54 contacts the right-side trigger button 50 under the action of the repulsive force of the trigger electromagnet 61, at the moment, one end of the control pull rope 44 is tensioned, the tensioning block 40 moves rightwards under the action of the tensile force of the control pull rope 44 to loosen the conveyor belt 41, so that the main box body 10 stops moving, meanwhile, after the right-side trigger button 50 is triggered, the spray pen sensor 23 is started, and the spray pen 55 sprays a tearable pigment on the guide rail 17 to remind a maintainer that problems possibly occur on the rail at the position;

when the knocking is finished, the sound disappears, the small direct current motor 25 is turned off, the swinging block 58 is retracted under the elastic force of the swinging block spring 57, the magnetic abutting plate 54 is reset under the elastic force of the abutting plate spring 53, the tightening block 40 is reset under the tensile force of the control pull rope 44 at the moment, the half friction wheel 18 rotates to a position with a gear to be meshed with the friction wheel 20, the friction wheel 20 starts to rotate, the rotation sensor 21 is turned off at the moment, the built-in electromagnet 35 is turned off at the same time, the base magnet 33 moves rightwards under the elastic force of the bevel gear spring 34, the bevel gear shaft sleeve 32 and the right bevel gear 30 are driven to move rightwards until the right bevel gear 30 is disengaged from the rear bevel gear 28, and the rear bevel gear shaft 31 rotates under the gravity to drive the overhaul hammer handle 12 and the overhaul hammer 16 to start to reset around the rear bevel gear shaft 31.

The invention has the beneficial effects that: the sound of knocking the rail by the overhauling hammer is converted into an electric signal through sound waves, then the electric signal is amplified and converted into current, the electric energy generated by the current is converted into mechanical energy capable of enabling the centrifugal wheel to rotate fast and slowly, automatic knocking detection along the rail is achieved, more accurate detection effects are achieved, meanwhile, the normal fluctuation range of the sound waves can be set manually according to rails made of different materials, and therefore the universality of the device is improved.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.