CN215894268U - Drop hammer type deflection measuring device for underwater transfer in south-to-north water - Google Patents
Drop hammer type deflection measuring device for underwater transfer in south-to-north water Download PDFInfo
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- CN215894268U CN215894268U CN202120367646.9U CN202120367646U CN215894268U CN 215894268 U CN215894268 U CN 215894268U CN 202120367646 U CN202120367646 U CN 202120367646U CN 215894268 U CN215894268 U CN 215894268U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02A90/30—Assessment of water resources
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Abstract
The utility model relates to a drop hammer type deflection measuring device for underwater transfer in south to north, which comprises a chassis, wherein a traveling mechanism and a drop hammer mechanism are arranged on the chassis, the drop hammer mechanism comprises a mechanism frame, a drop hammer and a drop hammer driving mechanism for driving the drop hammer to move upwards, the drop hammer mechanism also comprises a bearing surface for bearing the impact force of the drop hammer, a drop hammer water-proof cover communicated with the external atmosphere is covered on the chassis at the peripheries of the drop hammer and the bearing surface, the bottom of the drop hammer water-proof cover is fixedly connected with the chassis in a sealing manner, and the traveling mechanism is positioned on the outer side of the drop hammer water-proof cover. The utility model solves the technical problem that the drop hammer is easily influenced by fluid and can not be hammered by a normal drop when used underwater in the prior art.
Description
Technical Field
The utility model relates to a drop hammer type deflection measuring device for underwater transfer in south to north water in the deflection measuring field.
Background
The falling weight deflectometer (called FWD for short) is generated in the early 70 s of the last century, and simulates the instantaneous impact action of automobile load on the road surface to obtain the instantaneous deformation condition of the road surface, and the measuring result is relatively accurate and has large information quantity. Compared with the traditional Beckman beam force measurement deflection, the device has the characteristics of convenience, rapidness, safety, labor saving, simulation of actual condition application of dynamic load, and suitability for long-distance and continuous measurement.
The existing drop hammer type deflectometer comprises a chassis, a traveling mechanism, a drop hammer mechanism and a microcomputer control system, wherein the traveling mechanism comprises four traveling wheels which are rotatably assembled on the chassis, the drop hammer mechanism comprises a loading system and a displacement sensor, and the microcomputer control system comprises a control and data acquisition processing part. The working principle of the device is that a certain mass of a drop hammer is lifted to a certain height, when a walking mechanism runs to a specified position, a bearing plate is placed down, the bearing plate is in contact with the ground, the drop hammer freely falls, the force of the drop hammer is transmitted to the road surface through the bearing plate, so that pulse load is applied to the road surface, the surface of the road surface is instantaneously deformed, displacement sensors distributed at different distances from a measuring point detect the deformation of the road surface, and dynamic deflection and a basin generated under the action of dynamic load are obtained through calculation.
The existing drop weight deflection measuring device has the following problems: the falling weight of the free falling body impacts the road surface, so that the load of an automobile on the road surface is simulated, the free falling body movement of the falling weight is more important, and the existing falling weight deflection measuring device cannot be applied to an underwater environment, because the free falling body movement of the falling weight is influenced by fluid resistance, particularly fluid with flow velocity, under water, accurate and proper impact force values cannot be provided, and then the deflection value measurement requirement exists at the bottom of the existing canal adjusted in the south to north water; in addition, when carrying out deflection measurement to a highway section, need select a plurality of measuring points, just need transfer the loading board after falling weight deflectometer removes a section distance promptly, the impact that falls down, therefore the measurement efficiency of every measuring point is related to the measurement efficiency of whole highway section, and because all will transfer the loading board before impacting at every turn among the prior art, the process of transferring the loading board can influence detection efficiency, the loading board that reciprocates simultaneously also can lead to the structure of whole device more complicated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a drop hammer type deflection measuring device for underwater transfer in south to north water; the technical problem that in the prior art, when the underwater hydraulic hammer is used under water, the drop hammer is easily affected by fluid and cannot be hammered by a normal falling body is solved.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides a south-to-north water transfer is with weight formula deflection measuring device that falls under water, includes the chassis, is provided with running gear and hammer mechanism that falls on the chassis, and hammer mechanism that falls includes the mechanical structure, falls hammer and the hammer actuating mechanism that falls that the drive falls hammer rebound, and hammer mechanism that falls still including being used for bearing the loading end of the hammer impact force that falls, its characterized in that: and a drop hammer water-proof cover communicated with the external atmosphere is covered on the periphery of the drop hammer and the bearing surface on the chassis, the bottom of the drop hammer water-proof cover is fixedly connected with the chassis in a sealing way, and the travelling mechanism is positioned on the outer side of the drop hammer water-proof cover.
The drop hammer water-proof cover comprises a sealing cover irradiating the periphery of the drop hammer mechanism, and the drop hammer water-proof cover also comprises a vent pipe which is connected with the sealing cover and communicated with the atmosphere.
Running gear is including controlling left side walking area and the right side walking area of interval arrangement, and left side walking area, right side walking area all include upside walking area and downside walking area, and the downside walking area upside of left side walking area and/or right side walking area is provided with biography power end, pass power end be used for with the downside walking area of left side walking area and/or right side walking area upper end rolling contact cooperation or sliding contact cooperation, the lower extreme of framework pass left side walking area, the clearance between the right side walking area with pass power end transmission and connect.
The force transmission end is in transmission connection with the mechanism frame through being fixed at the bottom of the mechanism frame, the chassis is provided with a mechanism frame driving mechanism for driving the mechanism frame to move up and down, and the mechanism frame is assembled on the chassis in a guiding and moving mode along the up-down direction.
The left side walking belt and the right side walking belt are caterpillar belts or toothed belts.
The walking mechanism further comprises a front side walking wheel and a rear side walking wheel which are respectively connected with the left side walking belt and the right side walking belt, the drop hammer type deflection measuring device further comprises a cross beam, the length of the cross beam extends along the left-right direction, the cross beam is located between the front side walking wheel and the rear side walking wheel, a cross beam driving mechanism for driving the cross beam to move up and down is arranged on the chassis, and a plurality of displacement sensors are arranged on the cross beam at intervals along the length direction of the cross beam.
The bottom of the machine frame comprises a front vertical beam and a rear vertical beam which are arranged in the front and at the back, the upper ends of the front vertical beam and the rear vertical beam are connected through a connecting longitudinal beam, the front vertical beam, the rear vertical beam and the connecting longitudinal beam form a portal frame, the cross beam penetrates through the portal frame, a displacement sensor perforation is arranged at the center of a force transmission end, and one displacement sensor is arranged in the displacement sensor perforation in a penetrating mode.
The utility model has the beneficial effects that: in the utility model, the outer sides of the drop hammer and the drop hammer bearing surface are covered with the drop hammer water-isolating cover which is communicated with the atmosphere and isolates the drop hammer and the bearing surface from the water environment, so that the working environment of the drop hammer and the drop hammer bearing surface is still the atmospheric environment communicated with the external atmosphere, and the dropping process of the drop hammer is not influenced by fluid, thereby being capable of hammering the drop hammer to the water bottom normally.
Drawings
FIG. 1 is a schematic structural view of a drop weight deflection measuring device for underwater transfer in south-to-north water;
FIG. 2 is a schematic view of the left side running belt of FIG. 1 in cooperation with the front side running wheels and the rear side running wheels;
FIG. 3 is a schematic view of the engagement of the frame and drive head of FIG. 1;
fig. 4 is a schematic view of fig. 1 with the drop weight water-proof cover removed.
Detailed Description
The embodiment of a drop weight deflection measuring device for underwater transfer in south to north water is shown in figures 1-4: the hydraulic hammer comprises a chassis 23, wherein a traveling mechanism and a hammer dropping mechanism are arranged on the chassis 23, the chassis is made of metal, the traveling mechanism comprises a left traveling belt 18 and a right traveling belt 19 which are arranged at intervals left and right, in the hydraulic hammer, the left traveling belt 18 and the right traveling belt 19 are composite toothed belts, each traveling belt comprises an upper traveling belt part 17 and a lower traveling belt part 14, the traveling mechanism further comprises a front traveling wheel 20 and a rear traveling wheel 21 which are respectively connected with the left traveling belt and the right traveling belt, the front traveling wheel 20 and the rear traveling wheel 21 are in meshing transmission with the corresponding traveling belts, and the front traveling wheel is a driving wheel driven by a power mechanism.
The drop hammer mechanism comprises a machine frame assembled on a chassis in a guiding and moving mode along the up-down direction, the machine frame comprises a vertical guide rod 3, a bearing tray 6 is fixed on the vertical guide rod, a driving tray 2 is fixed at the top of the vertical guide rod, a drop hammer 5 is assembled between the bearing tray and the driving tray in the guiding and moving mode on the vertical guide rod, and the upper disc surface of the bearing tray forms a bearing surface impacted by the drop hammer 5. Be provided with on the drive tray and be connected the hammer actuating mechanism that falls in order to promote the hammer that falls with the hammer transmission, in this embodiment, hammer actuating mechanism that falls includes reel 1, and the winding has the lifting rope 4 that links to each other with the hammer that falls on the reel.
Be provided with on the chassis and be used for driving the mechanism frame actuating mechanism that the framework reciprocated, be provided with the support tray 8 that is located the load tray downside on the chassis, mechanism frame actuating mechanism is cam drive mechanism, cam drive mechanism is including rotating the drive cam 7 of assembling on supporting the tray, drive cam is by the motor drive who corresponds, can go up and down to the mechanism frame of small amplitude through drive cam's rotation, rotary drive cam 7, drive cam can push up load tray and mechanism frame to high-order, drive cam overturns, the mechanism frame falls on the low level.
The machine frame further comprises a door-shaped frame 9 positioned at the bottom of the vertical guide rod, the door-shaped frame 9 comprises a front-side vertical beam 30, a rear-side vertical beam 31 and a connecting longitudinal beam 32 connected to the tops of the front-side vertical beam and the rear-side vertical beam, and the connecting longitudinal beam 32 is fixed at the bottom of the vertical guide rod 3. The bottom of the portal frame is fixed with a force transfer end 13, namely the force transfer end is fixed at the bottom of the front vertical beam and the bottom of the rear vertical beam, the force transfer end is of a plate-shaped structure, and the bottom of the force transfer end 13 is in sliding contact fit with the upper ends of the lower walking belt parts 14 of the left walking belt and the right walking belt. When the drop hammer freely falls to impact the bearing tray, the impact force applied to the bearing tray is transmitted to the force transmission end through the vertical guide rod and the door-shaped frame, and then is transmitted to the road surface through the lower walking belt part, so that the impact on the road surface is realized, and the road surface is deformed.
The drop hammer deflection measuring device further comprises a cross beam 11, the length of the cross beam extends along the left-right direction, the cross beam is located between the front side travelling wheel and the rear side travelling wheel, a cross beam driving mechanism for driving the cross beam to move up and down is arranged on the chassis, the cross beam driving mechanism comprises a cross beam driving motor and a lead screw nut mechanism, the cross beam driving motor is in transmission connection with a nut 15 in the lead screw nut mechanism, the bottom of a lead screw 16 in the lead screw nut mechanism is fixedly connected with the cross beam 11, and therefore when the nut rotates, the lead screw can move up and down, and the cross beam is driven to move up and down. A plurality of displacement sensors 10 are arranged on the cross beam along the length direction of the cross beam at intervals, one of the displacement sensors is a central displacement sensor 12, the central displacement sensor is located at the central position of the deflection basin, a displacement sensor through hole is formed in the center of the force transmission end 13, the central displacement sensor penetrates through the displacement sensor through hole, and the rest displacement sensors are symmetrically distributed on the left side and the right side of the cross beam.
A drop hammer water-proof cover is fixed on the chassis and comprises a sealing cover 40 covering the drop hammer and the periphery of the bearing surface, a vent pipe 41 is connected to the upper end of the sealing cover, the upper end of the vent pipe 41 is communicated with the atmosphere, so that the internal air pressure of the drop hammer water-proof cover is the same as the external atmospheric pressure, and the working environment of the drop hammer is the same as that of the drop hammer on the road surface. Specifically, the bottom of the sealing cover is fixed on a chassis on the lower side of the supporting tray in a sealing mode, and the travelling mechanism is located on the outer side of the drop hammer water insulation cover. When the device is used, the travelling mechanism and the sealing cover 40 are positioned below the water surface, the sealing cover is communicated with the external atmosphere through the vent pipe 41, the working environment of the drop hammer 5 is still an air environment, the drop hammer 5 is free to drop without being influenced by the water resistance, the normal impact can be met, and the impact force is transmitted to the water bottom through the mechanism frame, the force transmission end head and the corresponding travelling belt so as to measure the deflection of the water bottom surface. The drop hammer type deflection measuring device in the embodiment can be applied to the deflection measurement of the water bottom surface of the south-to-north water diversion.
When the vehicle does not run to the water bottom to be detected, the beam driving mechanism lifts the height of the beam, so that the influence of the displacement sensor on the running of the running mechanism is avoided; the driving mechanism of the mechanical frame drives the mechanical frame to be in a high position, and at the moment, the force transmission end head is not contacted with the upper ends of the lower side walking belt parts of the left side walking belt and the right side walking belt, so that the force transmission end head cannot be abraded. When the vehicle runs to the bottom to be detected, the drop hammer driving mechanism lifts the drop hammer to a high position, a driving cam of the mechanism frame driving mechanism overturns, the mechanism frame falls to a low position, a force transmission end is in contact with and in sliding fit with a lower side travelling belt part of a left side travelling belt and a lower side travelling belt part of a right side travelling belt, the drop hammer drops to impact a machine frame, the machine frame transmits impact force to the force transmission end, the impact force is transmitted to a road surface through the lower side travelling belt parts of the left side travelling belt and the right side travelling belt, so that the road surface forms a bent basin, a central displacement sensor can measure the bent basin value at the center of the impacted position, displacement sensors at other positions can detect the road surface sinking amount at the corresponding position and judge whether the road surface at the corresponding position has the danger of sinking, and the displayed bent basin data can be changed very dynamically after the road surface is impacted when the road surface has the risk of sinking, in short, if the road surface at a position has a collapse risk, the looseness of the roadbed at the lower side of the road surface at the position has a problem, and after the road surface at the position is impacted, large deflection deformation can be generated, for example, the normal deflection deformation is the maximum deflection amount of the center position of a deflection basin, and the deflection amount is smaller and smaller along with the distance from the center position. At a check point, after the deflection measurement, promote the drop hammer to the high position again, the height of framework need not adjust, pass power end remain throughout with the left side walking area, the contact of the downside walking belt part of right side walking area and sliding fit, when drop hammer deflection measuring device removed next measuring point, the drop hammer can directly fall and carry out the deflection measurement, pass power end and the walking belt that corresponds and has constituted the loading board among the prior art together, the process of transferring the loading board has been saved, the deflection measurement efficiency in highway section has been improved greatly.
In other embodiments of the present invention, the bottom of the force transmission end may further have a rolling element, such as a rolling bearing, and the force transmission end may be in rolling contact with the upper end of the lower running belt portion of the left and right running belts; the left walking belt and the right walking belt can also be crawler belts; the running mechanism can also be a follow-up running mechanism, and the drop hammer type deflection measuring device is driven to move by a trailer when in use; the force transmission end head can also be provided with a hydraulic force transducer.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a south-to-north water transfer is with weight formula of falling deflection measuring device under water, includes the chassis, is provided with running gear and hammer mechanism that falls on the chassis, and hammer mechanism that falls includes the mechanical structure, falls hammer and the hammer actuating mechanism that falls that the drive falls hammer rebound, and hammer mechanism that falls still includes the loading end that is used for bearing the hammer impact force that falls, its characterized in that: and a drop hammer water-proof cover communicated with the external atmosphere is covered on the periphery of the drop hammer and the bearing surface on the chassis, the bottom of the drop hammer water-proof cover is fixedly connected with the chassis in a sealing way, and the travelling mechanism is positioned on the outer side of the drop hammer water-proof cover.
2. The south-to-north water diversion underwater drop weight deflection measuring device of claim 1, wherein: the drop hammer water-proof cover comprises a sealing cover irradiating the periphery of the drop hammer mechanism, and the drop hammer water-proof cover also comprises a vent pipe which is connected with the sealing cover and communicated with the atmosphere.
3. The north-south water diversion underwater drop weight deflection measuring apparatus according to claim 1 or 2, wherein: running gear is including controlling left side walking area and the right side walking area of interval arrangement, and left side walking area, right side walking area all include upside walking area and downside walking area, and the downside walking area upside of left side walking area and/or right side walking area is provided with biography power end, pass power end be used for with the downside walking area of left side walking area and/or right side walking area upper end rolling contact cooperation or sliding contact cooperation, the lower extreme of framework pass left side walking area, the clearance between the right side walking area with pass power end transmission and connect.
4. The south-to-north water diversion underwater drop weight deflection measuring apparatus of claim 3, wherein: the force transmission end is in transmission connection with the mechanism frame through being fixed at the bottom of the mechanism frame, the chassis is provided with a mechanism frame driving mechanism for driving the mechanism frame to move up and down, and the mechanism frame is assembled on the chassis in a guiding and moving mode along the up-down direction.
5. The south-to-north water diversion underwater drop weight deflection measuring apparatus of claim 3, wherein: the walking mechanism further comprises a front side walking wheel and a rear side walking wheel which are respectively connected with the left side walking belt and the right side walking belt, the drop hammer type deflection measuring device further comprises a cross beam, the length of the cross beam extends along the left-right direction, the cross beam is located between the front side walking wheel and the rear side walking wheel, a cross beam driving mechanism for driving the cross beam to move up and down is arranged on the chassis, and a plurality of displacement sensors are arranged on the cross beam at intervals along the length direction of the cross beam.
6. The south-to-north water diversion underwater drop weight deflection measuring apparatus of claim 5, wherein: the bottom of the machine frame comprises a front vertical beam and a rear vertical beam which are arranged in the front and at the back, the upper ends of the front vertical beam and the rear vertical beam are connected through a connecting longitudinal beam, the front vertical beam, the rear vertical beam and the connecting longitudinal beam form a portal frame, the cross beam penetrates through the portal frame, a displacement sensor perforation is arranged at the center of a force transmission end, and one displacement sensor is arranged in the displacement sensor perforation in a penetrating mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120367646.9U CN215894268U (en) | 2021-02-10 | 2021-02-10 | Drop hammer type deflection measuring device for underwater transfer in south-to-north water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120367646.9U CN215894268U (en) | 2021-02-10 | 2021-02-10 | Drop hammer type deflection measuring device for underwater transfer in south-to-north water |
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| CN215894268U true CN215894268U (en) | 2022-02-22 |
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| CN202120367646.9U Active CN215894268U (en) | 2021-02-10 | 2021-02-10 | Drop hammer type deflection measuring device for underwater transfer in south-to-north water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029827A (en) * | 2021-02-10 | 2021-06-25 | 郑州东辰科技有限公司 | South-to-north water transfer is underwater with weight formula deflection measuring device that falls |
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2021
- 2021-02-10 CN CN202120367646.9U patent/CN215894268U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029827A (en) * | 2021-02-10 | 2021-06-25 | 郑州东辰科技有限公司 | South-to-north water transfer is underwater with weight formula deflection measuring device that falls |
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