CN220323205U - Hammering detection device - Google Patents

Abstract

The utility model relates to a hammering detection device, which comprises a device bracket provided with travelling wheels, wherein a hammering wheel capable of rotating when moving along with the device bracket and floating up and down is assembled on the device bracket in a guiding way, a hammering wheel reset spring used for keeping the hammering wheel in contact with a target surface is arranged on the device bracket, an intermittent driving mechanism driven by a power source is arranged on the device bracket, and the intermittent driving mechanism is provided with a hammering hammer used for impacting the hammering wheel in a gap. In the running process of the hammering detection device, the hammering wheel also runs along the target surface, the hammering wheel reset spring ensures that the hammering wheel always contacts with the target surface, the intermittent driving mechanism drives the hammering hammer to perform gap impact on the hammering wheel, the hammering wheel impacts the target surface under the impact of the hammering hammer, and the quality of the target surface is judged according to echoes generated by the target surface. According to the utility model, the impact bar is not required to be held manually to impact the target surface once, so that the labor intensity is saved, and the working efficiency is improved.

Description

Hammering detection device

Technical Field

The utility model relates to a defect detection device for the ground, a tunnel or a wall surface, in particular to a hammering detection device.

Background

The echoes reflected by a solid ground, tunnel or wall surface (also called a target surface) and a hollow ground, tunnel or wall surface are different, so that a knocking mode is generally adopted to judge whether the hollow space exists below the target surface, thereby judging the quality of the target surface.

For example, after finishing decoration, judging whether the lower part of the ceramic tile is empty, and carrying out knocking detection by an operator by taking a knocking hammer, for example, when the quality of a railway tunnel is detected, the operator can manually knock the wall of the tunnel by holding steel bars, and the defect of the tunnel is judged by listening to sound through experience.

The following problems exist in the way of judging the quality of the target surface by manual knocking: the manual knocking has the advantages that the labor intensity is high, the working efficiency is low, the knocking force of each time cannot be ensured to be consistent, and the technical problem of target surface damage can occur; the echo fed back by the target surface is different when the knocking force is different every time, and experienced personnel are required for subjective judgment, so that the problems of misdiagnosis, missed diagnosis and the like can be caused.

Disclosure of Invention

The utility model aims to provide a hammering detection device which solves the technical problems of high working strength and low working efficiency caused by manually knocking a target surface in the prior art.

In order to solve the technical problems, the technical scheme of the impact detection device in the utility model is as follows:

a hammering detection device comprises a device support provided with travelling wheels, wherein a hammering wheel capable of rotating when moving along with the device support and capable of floating up and down is assembled on the device support in a guiding manner, a hammering wheel reset spring used for keeping the hammering wheel in contact with a target surface is arranged on the device support, an intermittent driving mechanism driven by a power source is arranged on the device support, and the intermittent driving mechanism is provided with an impact hammer used for impacting the hammering wheel in a gap manner.

Further, the device bracket is provided with a sound receiving device for collecting sound of the target surface shot by the shooting wheel.

Further, the power source is an electric motor, a hydraulic motor or a pneumatic motor.

Further, the outer wheel surface of the striking wheel is a spherical surface, and the contact surface of the striking hammer, which is contacted and impacted with the striking wheel, is a spherical surface.

Further, a swing arm with an axis extending along the front-back direction is hinged on the device bracket, and the flicking wheel is rotatably assembled on the swing arm; or, the device bracket is provided with a guide structure with a guide direction extending along the up-down direction, and the flick wheel shaft of the flick wheel is assembled on the guide structure in a guide and movement way.

Further, the intermittent driving mechanism comprises a lower rotating part, the rotating axis of which extends along the up-down direction, an upper actuating part, the upper actuating part can move along the up-down direction in a rotation stopping guide way, the lower rotating part is driven by the power source to rotate, a central hole is formed in the lower rotating part, the impact hammer is of a vertically arranged rod-shaped structure, the impact hammer penetrates through the central hole, the upper end of the impact hammer is fixedly connected with the upper actuating part, the lower end face of the impact hammer is used for impacting the impact wheel, the lower end of the lower rotating part is provided with a lower end face cam, the lower end of the upper actuating part is provided with an upper end face cam matched with the lower end face cam, in the circumferential direction, the lower end face cam is provided with an ascending driving section, the upper actuating part is driven to move upwards along with the rotation of the lower rotating part, and the lower end face cam is further provided with a descending section, which is separated from and supports the upper end face cam, at the tail end of the ascending driving section.

Further, an action piece reset spring for pressing down the upper action piece is arranged at the upper end of the upper action piece, and the compression amount of the action piece reset spring is adjustable.

Further, when the lower end of the impact hammer impacts the impact wheel, the upper end cam and the lower end cam are arranged at intervals, and the lower end cam contacts with the upper end cam along with the rotation of the lower rotating member.

Further, a rotating member gear is fixed on the periphery of the lower rotating member, and a power source gear meshed with the rotating member gear is arranged at the power output end of the power source.

The beneficial effects of the utility model are as follows: according to the utility model, the travelling wheels are arranged on the device support, so that the whole hammering detection device can walk along the target surface, the hammering wheel also walks along the target surface in the walking process of the hammering detection device, the hammering wheel reset spring ensures that the hammering wheel always contacts with the target surface, the intermittent driving mechanism drives the impact hammer to perform gap impact on the hammering wheel, the hammering wheel impacts the target surface under the impact of the impact hammer, and the quality of the target surface is judged according to the echo generated by the target surface. According to the utility model, the impact bar is not required to be held manually to impact the target surface once, so that the labor intensity is saved, and the working efficiency is improved.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to like or corresponding parts and in which:

fig. 1 is a schematic structural view of embodiment 1 of a hammer detection device;

fig. 2 is a schematic view showing a state in which the upper operating element is lifted in embodiment 1;

FIG. 3 is a schematic view showing a state in which the upper operating member is raised to the highest level in embodiment 1;

fig. 4 is a schematic structural view of embodiment 2 of a hammer detection device;

FIG. 5 is a schematic view of the intermittent drive mechanism of FIG. 4;

FIG. 6 is a top view of FIG. 4;

FIG. 7 is a schematic view showing a state in which the hooking bracket in example 2 is reversely rotated by the hooking mechanism with the impact hammer

FIG. 8 is a schematic view showing a state after the hooking mechanism is contacted with the unlocking trigger in embodiment 2;

fig. 9 is an enlarged view at a in fig. 5;

reference numerals illustrate: 1. a percussion hammer; 1-1, a hook matching part of an impact hammer; 2. a hooking mechanism; 2-1, a hook rod; 2-2, hooking; 3. a spring device; 3-1, a coil spring; 3-2, stop lever; 4. unlocking the triggering device; 5. a magnetic ring; 6. a magnetic encoder; 7. a driving motor; 8. a walking wheel; 9. a device holder; 10. a fixed shaft; 11. a hammer striking part; 12. the surface of the tested object; 13. a transmission shaft; 14. a hook bracket; 15. a hook reset spring; 16. pushing the push head; 17. a flick wheel; 18. a flick wheel axle; 19. a wheel axle return spring; 20. a power source; 21. a power source gear; 22. a rotating member gear; 23. a lower rotating member; 24. an upper side operating member; 25. an operation member return spring; 26. a spring pressing plate; 27. a spring adjustment nut; 28. a platen guide bar; 29. an upper end surface cam; 30. a lower end surface cam; 31. a lifting driving section; 32. a descent section; 33. swing arms; 34. and a spring return spring of the impact wheel.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

An embodiment 1 of an impact detection apparatus according to the present utility model is shown in fig. 1 to 3: the device comprises a device bracket 9 with travelling wheels arranged at the bottom, wherein the device bracket is of a shell structure, the device bracket is represented by oblique lines in the figure, and all the device brackets are not shown in the figure. The walking wheel 8 can have no power source, and when in use, a worker pushes the device bracket to move, or a walking wheel driving motor for driving the walking wheel is arranged, and the device bracket is driven to move by electric drive.

The device bracket 9 is provided with a flick wheel 17 capable of floating up and down and rotating along with the movement of the device bracket in a guiding and moving way, and the device bracket is provided with a flick wheel reset spring 34 for keeping the flick wheel in contact with a target surface, namely the surface 12 of the tested object. In this embodiment, the device bracket is hinged with a swing arm 33 with an axis extending in the front-rear direction, the swing arm 33 is an arc swing arm with an upward notch, and the flicking wheel is rotatably assembled at one end of the swing arm far away from the hinge axis. The impact wheel return spring 34 is a compression spring arranged between the upper end of the swing arm and the device bracket.

The device holder 9 is provided with an intermittent drive mechanism driven by a power source, the intermittent drive mechanism having an impact hammer 1 for gap-striking the impact wheel. In this embodiment, the power source is a motor, and the device bracket is provided with a sound receiving device for collecting sound of the target surface struck by the striking wheel.

The outer wheel surface of the striking wheel 17 is a spherical surface, the contact surface of the striking hammer 1, which contacts and strikes the striking wheel, is a spherical surface, the upper end of the striking hammer and the upper end of the striking wheel are in a point contact mode, and the contact of the striking wheel and the target surface is also in a point contact mode.

The intermittent drive mechanism includes a lower rotating member 23 whose rotation axis extends in the up-down direction, the lower rotating member being rotatably fitted to the apparatus bracket through a bearing, and an upper actuating member 24 mounted to the apparatus bracket in a guided movement in the up-down direction, the upper actuating member 24 being in rotation-preventing engagement with the apparatus bracket, the lower rotating member being driven to rotate by a power source.

The lower rotating member 23 is provided with a central hole, the impact hammer 1 is a rod-shaped structure vertically arranged penetrating through the central hole, the upper end of the impact hammer 1 is fixedly connected with the upper actuating member 24, and the lower end surface of the impact hammer forms a contact surface for impacting the impact wheel, namely an impact hammer impact part 11. The upper end of the lower rotating member is provided with a lower end cam 30, the lower end of the upper operating member is provided with an upper end cam 29 which is matched with the lower end cam, the lower end cam is provided with an ascending driving section 31 which rotates along with the lower rotating member to drive the upper operating member to move upwards in the circumferential direction, the lower end cam is also provided with a descending section 32 which is separated from and supports the upper end cam at the tail end of the ascending driving section, the descending section 32 is of a vertical face structure which is vertically arranged, and the circumferential side surface of the lowest position of the upper end cam is also a vertical face. That is, when the lower rotating member rotates, the ascending driving section first drives the upper operating member so that the upper operating member moves upward, as shown in fig. 2, and as the lower rotating member continues to rotate, the upper operating member ascends to the highest height, as shown in fig. 3, and when the lower rotating member continues to rotate, the ascending driving section will disengage from the upper end cam, i.e., the ascending driving section can not support the upper end cam any more, and under the combined action of the dead weight and the operating member return spring, the impact hammer moves downward rapidly to strike the striking wheel, and when the impact hammer contacts and strikes the striking wheel, the upper end cam and the lower end cam are disposed at an interval, so that the impact force can be prevented from being transmitted to the lower rotating member. When the lower rotating member continues to rotate, the lower end cam comes into contact with the upper end cam again with the rotation of the lower rotating member.

An actuating element return spring 25 for pressing down the upper actuating element is arranged at the upper end of the upper actuating element, and the compression amount of the actuating element return spring 25 is adjustable. Specifically, a vertically arranged pressing plate guide rod 28 is fixed on the device support, a spring pressing plate 26 for pressing down the return spring of the action member is movably arranged on the pressing plate guide rod 28 in a guiding manner, a spring adjusting nut 27 is connected to the upper side of the spring pressing plate on the pressing plate guide rod in a threaded manner, and the compression amount of the return spring 25 of the action member can be adjusted by adjusting the height of the spring adjusting nut 27, and the impact force of the impact wheel on the target surface is determined by the compression amount.

The periphery of the lower rotating member is fixed with a rotating member gear 22, and a power source gear 21 meshed with the rotating member gear is arranged on a motor shaft of a power output end machine motor of the power source 20.

When the device is used, the travelling wheel moves along the surface 12 of the tested object, the impact wheel is also in contact with the surface 12 of the tested object, the impact wheel rotates in a follow-up way under the action of friction force, the power source drives the lower rotating part to rotate, the impact hammer moves upwards along with the upper acting part and then moves downwards to impact the impact wheel once every time when the lower rotating part rotates one circle, the impact wheel impacts the surface of the tested object, and whether the lower side of the surface of the tested object is empty or not is judged according to impact sound. In this embodiment, the sound of the impact wheel striking the surface of the tested object is recorded by the sound-receiving device, and then the quality of the surface of the tested object is automatically judged.

In other embodiments of the present utility model, the floating of the striking wheel may be achieved by, for example, providing a guiding hole extending in the up-down direction on the device support, guiding and moving a striking wheel axle of the striking wheel to fit in the guiding hole, connecting a bearing to the striking wheel axle, and propping up a striking wheel return spring between the upper end of the bearing and the device support; the intermittent drive mechanism may also be of other forms, such as a motor with an eccentric fixed to the motor shaft that produces a downward impact upon each revolution of the motor shaft.

Embodiment 2 of a hammering detection device is shown in fig. 4 to 9: embodiment 2 is different from embodiment 1 in that in this embodiment, the form of the intermittent drive mechanism in embodiment 2 is different from that in embodiment 1.

In this embodiment:

the intermittent driving mechanism comprises a fixed shaft 10 fixed on the device bracket, the axis of the fixed shaft extends along the front-back direction, the impact hammer 1 is coaxially and rotatably sleeved on the fixed shaft 10, external impact is realized when the impact hammer 1 rotates positively, and the gravity center of the impact hammer 1 is positioned on the rotating axis of the impact hammer, so that gravity in the impact hammer does not apply work in the reciprocating swing process of the impact hammer. The hammer has a hammer striking part 11 for the upper end surface of the striking wheel, and the hammer striking part 11 has a ball head structure, so that the hammer striking part is in point contact with the striking wheel. The forward direction and the reverse direction in the present utility model are relative terms, that is, when the impact hammer rotates, the rotation in more than one direction is the forward direction, and the rotation in the other direction is the reverse direction, and in this embodiment, the counterclockwise rotation is the forward direction and the clockwise rotation is the reverse direction from the view point of fig. 4.

The front end of the fixed shaft is also coaxially and rotatably sleeved with a hook bracket 14, a transmission shaft 13 is fixed on the hook bracket 14, the transmission shaft 13 is sleeved with the front end of the fixed shaft, the transmission shaft forms a bracket torque input structure for inputting torque to drive the hook bracket to rotate, and in the embodiment, a driving motor 7 for driving the transmission shaft to rotate is arranged on the device bracket.

The hook support is a rod-shaped structure with the length extending along the radial direction of the fixed shaft, the two ends of the hook support are respectively provided with a hook mechanism 2, the impact hammer 1 is provided with an impact hammer hook matching part 1-1 used for being matched with a hook of the hook mechanism, the hook matching part comprises a hook matching groove, the hook matching groove is positioned at the front side of the impact hammer, the hook mechanism 2 is positioned at the front side of the impact hammer 1, the hook mechanism comprises a hook rod 2-1 which is rotationally arranged on the hook support and extends along the front and rear direction, one end of the hook rod 2-1 is provided with a hook 2-2 used for being matched with a hook matched grass hook, the other end of the hook rod is provided with a push head 16, and a hook reset spring 15 is arranged between the push head 16 and the hook support 14 and is used for exerting force on the push head so that the hook rod has a clockwise rotating trend.

The device support is further provided with an unlocking trigger device 4 which is in pushing fit with the hook mechanism to unlock the hook fitting part of the hook mechanism and the impact hammer, in this embodiment, the unlocking trigger device is a fixed block fixed on the device support, when the hook support rotates clockwise, the pushing head touches the unlocking trigger device, the hook rod rotates anticlockwise, the hook 2-2 can be separated from the hook fitting groove, and meanwhile, as the hook support 14 continues to rotate clockwise, the pushing head 16 can cross the unlocking trigger device, so that the hook support only needs to maintain clockwise unidirectional rotation, each hook mechanism 2 can be matched with the hook fitting part in sequence, the hook support does not need to rotate back and forth, and the control is simpler. The circumferential position of the fixed block is adjustable, and the compression degree of the spring device can be adjusted by adjusting the circumferential position of the fixed block, so that the impact force of the impact hammer on the impact wheel can be adjusted.

The device bracket is also provided with a spring device 3, the spring device 3 is provided with a potential energy triggering part which is pushed by the impact hammer to realize energy storage when the hook mechanism drives the impact hammer to reversely rotate, the spring device and the impact hammer are independently arranged, and the impact hammer and the potential energy triggering part are arranged at intervals when the impact hammer impacts outwards.

The spring device 3 comprises a coil spring 3-1, the inner end of which is fixed on a fixed shaft, the outer end of which is connected with a stop lever 3-2, the stop lever 3-2 forms a potential energy triggering part, the length of the stop lever extends along the front-back direction, the axis of the coil spring and the rotation axis of the impact hammer are coaxially arranged, the coil spring 3-1 is positioned between the impact hammer 1 and the hook bracket 14, and the stop lever is positioned on the upper side of the impact hammer.

When the spring device is used, in an initial state, as shown in fig. 6, the impact part of the impact hammer is contacted with the surface of the impact wheel, the hook of the hook mechanism is hooked and matched with the hook matching part of the impact hammer on the impact hammer, the coil spring of the spring device is in a free state (zero potential energy state), and the impact hammer and the stop lever of the spring device are arranged at intervals in the circumferential direction; the driving motor drives the hook bracket to rotate clockwise, the hook bracket drives the impact hammer to rotate clockwise through the hook mechanism, when the impact hammer contacts with the stop lever, as shown in fig. 7, the coil spring of the spring device starts to store energy, as the hook bracket and the impact hammer continue to rotate clockwise, the push head of the hook mechanism contacts with the unlocking triggering device on the device bracket, the hook rod of the hook mechanism rotates anticlockwise, the hook of the hook mechanism is separated from the hook matching part of the impact hammer, the coil spring starts to release energy, the impact hammer rotates anticlockwise, namely forward under the action of the coil spring, when the impact hammer is separated from the stop lever, the impact part of the impact hammer does not contact with the surface of the impact wheel, and as the impact hammer continues to rotate anticlockwise, the impact hammer is separated from the spring device, and at the moment of impact, the spring device does not act on the impact hammer, so that the potential energy of the impact hammer can be completely converted, and the impact energy of the impact hammer can be accurately set.

When continuous impact test is needed, the hook bracket continues to rotate clockwise, and the other hook mechanism is matched with the hook matching part of the impact hammer.

In other embodiments of the utility model: only one hook mechanism can be provided, and at the moment, the hook bracket can swing back and forth to realize multiple impacts on the impact wheel; the spring device can also be a spiral spring, and the spiral spring can be arc-shaped or linear, so long as the spiral spring can be compressed to store energy in the reverse rotation process of the pendulum bob.

In the foregoing description of the present specification, the terms "fixed," "mounted," "connected," or "connected" are to be construed broadly, unless explicitly stated or limited otherwise. For example, in terms of the term "coupled," it may be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other. Therefore, unless otherwise specifically defined in the specification, a person skilled in the art can understand the specific meaning of the above terms in the present utility model according to the specific circumstances.

Those skilled in the art will also appreciate from the foregoing description that terms such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise" and the like are used herein for the purpose of facilitating description and simplifying the description of the present utility model, and thus do not necessarily have to have, configure, or operate in, the specific orientations, and thus are not to be construed or construed as limiting the present utility model.

In addition, the terms "first" or "second" and the like used in the present specification to refer to the numbers or ordinal numbers are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present specification, the meaning of "plurality" means at least two, for example, two, three or more, etc., unless explicitly defined otherwise.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (9)

1. A hammering detection device, its characterized in that: the device comprises a device bracket provided with travelling wheels, wherein the device bracket is provided with a flick wheel capable of floating up and down and rotating along with the movement of the device bracket in a guiding movement manner, the device bracket is provided with a flick wheel reset spring used for keeping the flick wheel in contact with a target surface, the device bracket is provided with an intermittent driving mechanism driven by a power source, and the intermittent driving mechanism is provided with an impact hammer used for impacting the flick wheel in a gap manner.

2. The hammering detection device according to claim 1, wherein: the device bracket is provided with a sound receiving device for collecting sound of the target surface struck by the striking wheel.

3. The hammering detection device according to claim 1, wherein: the power source is an electric motor, a hydraulic motor or a pneumatic motor.

4. The hammering detection device according to claim 1, wherein: the outer wheel surface of the striking wheel is a spherical surface, and the contact surface of the striking hammer, which is contacted and impacted with the striking wheel, is a spherical surface.

5. The hammering detection device according to claim 1, wherein: a swing arm with an axis extending along the front-back direction is hinged on the device bracket, and the flicking wheel is rotatably assembled on the swing arm; or, the device bracket is provided with a guide structure with a guide direction extending along the up-down direction, and the flick wheel shaft of the flick wheel is assembled on the guide structure in a guide and movement way.

6. The hammering detection device according to any one of claims 1 to 5, characterized in that: the intermittent driving mechanism comprises a lower rotating part, the rotating axis of which extends along the up-down direction, an upper actuating part and a lower actuating part, the upper actuating part can move along the up-down direction in a rotation stopping direction, the lower rotating part is driven by a power source to rotate, a central hole is formed in the lower rotating part, an impact hammer is of a vertically arranged rod-shaped structure, the impact hammer penetrates through the central hole, the upper end of the impact hammer is fixedly connected with the upper actuating part, the lower end face of the impact hammer is used for impacting a flicking wheel, the lower end of the lower rotating part is provided with a lower end face cam, the lower end of the upper actuating part is provided with an upper end face cam matched with the lower end face cam, in the circumferential direction, the lower end face cam is provided with an ascending driving section which drives the upper actuating part to move upwards along with the rotation of the lower rotating part, and the lower end face cam is further provided with a descending section which is separated from and supported on the tail end of the ascending driving section.

7. The hammering detection device according to claim 6, wherein: the upper end of the upper operating member is provided with an operating member return spring for pressing down the upper operating member, and the compression amount of the operating member return spring is adjustable.

8. The hammering detection device according to claim 6, wherein: when the lower end of the impact hammer impacts the impact wheel, the upper end face cam and the lower end face cam are arranged at intervals, and the lower end face cam contacts with the upper end face cam along with the rotation of the lower rotating piece.

9. The hammering detection device according to claim 6, wherein: the periphery of the lower rotating piece is fixed with a rotating piece gear, and a power output end of the power source is provided with a power source gear meshed with the rotating piece gear.