CN117606903A - Quick drop hammer type deflection instrument - Google Patents
Quick drop hammer type deflection instrument Download PDFInfo
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- CN117606903A CN117606903A CN202311593189.5A CN202311593189A CN117606903A CN 117606903 A CN117606903 A CN 117606903A CN 202311593189 A CN202311593189 A CN 202311593189A CN 117606903 A CN117606903 A CN 117606903A
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- 238000001514 detection method Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 68
- 238000007599 discharging Methods 0.000 claims description 19
- 238000009826 distribution Methods 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 13
- 230000035939 shock Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 3
- 239000010720 hydraulic oil Substances 0.000 claims 2
- 239000004575 stone Substances 0.000 abstract description 19
- 239000002245 particle Substances 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
- E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
- E01C23/22—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ by spraying
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention belongs to the field of road settlement deformation detection, and provides a rapid drop hammer type deflection instrument which comprises a base and a base fixedly connected to the top end of the base, wherein the top end of the base is fixedly connected with a vertical frame, a movable seat which is driven to move up and down by a lifting control piece is arranged on the vertical frame, and a carrier plate structure is fixedly arranged at the bottom end of the movable seat; wherein, the bottom of movable seat is provided with lateral shifting mechanism, and lateral shifting mechanism's bottom fixedly connected with elastic connection spare, elastic connection spare's bottom fixedly connected with pushes away material structure, pushes away material structure height and is less than the carrier plate structure and is located one side of carrier plate structure. According to the invention, the large particle stones below the bearing plate can be automatically pushed away from the contact position of the bearing plate and the road surface, so that the condition that equipment is damaged due to the fact that the bearing plate is pressed on the large particle stones is effectively avoided, and meanwhile, the accuracy of a detection result is improved. The transverse moving mechanism is automatically controlled through a program, manual intervention is not needed, automatic cleaning of the detection position is achieved, and convenience and rapidness are achieved.
Description
Technical Field
The invention belongs to the field of road settlement deformation detection, and particularly relates to a rapid drop hammer type deflection meter.
Background
The drop hammer type deflection meter is a pulse power deflection meter, which can simulate the instantaneous impact of automobile load on the road surface to obtain the instantaneous deformation condition of the road surface. Drop hammer deflectometers are generally composed of a weight and a measuring rod. In the test process, the heavy hammer is released after being lifted to a certain height, and the heavy hammer freely falls and impacts the ground or a measuring rod on a test point. The road surface deformation can be calculated according to the corresponding displacement sensor. The stability of the foundation can be judged by measuring sedimentation or deformation, so that engineering design and construction process are guided;
the utility model discloses a high accuracy falls hammer deflection appearance in chinese patent of publication No. CN214309974U, including two connecting plates by hydro-cylinder drive and fixed connection in the spliced pole of connecting plate, the axial mounting hole has been seted up to the directional ground one end of spliced pole, the interior slip of mounting hole is provided with the installation axle, the directional ground one end of installation axle is provided with the loading board, be provided with compression spring in the mounting hole, compression spring one end and mounting hole keep away from ground one end inner wall butt, the other end and installation axle peg graft in the one end butt of mounting hole, be provided with the fixed subassembly that prevents the installation axle and drop in the spliced pole. The spring used for buffering is arranged between the bearing plate and the connecting column, so that the effect of reducing the pressure of the bearing plate to the ground before testing and improving the accuracy of a test result is achieved.
However, in many of the existing drop hammer deflectometers, the vehicle is moved to a predetermined position during the detection to start the deflectometer for road detection. Outdoor road conditions are complex, often some stones exist on the road, and smaller stones are negligible, but when the bearing plate at the junction with the ground is pressed on the larger stones, the impact of the drop hammer easily causes irreversible damage to the bearing plate. Meanwhile, the existence of the larger stones makes the part of the road surface excessively protrude, and when the drop hammer impacts the bearing plate, the uneven settlement of the road surface can be caused, so that the accuracy of the detection result of the position of the detection point is affected, and the existing drop hammer type deflection instrument does not have the function of automatically cleaning the large particle stones of the detection point.
Disclosure of Invention
In order to solve the technical problems, the invention provides a rapid drop hammer type deflectometer which aims to solve the problem that the prior art does not have the function of automatically cleaning large-particle stones at detection points.
The quick drop hammer type deflection instrument comprises a base and a base fixedly connected to the top end of the base, wherein the top end of the base is fixedly connected with a vertical frame, a movable seat which is driven to move up and down by a lifting control piece is arranged on the vertical frame, and a carrier plate structure is fixedly arranged at the bottom end of the movable seat;
the bottom of the movable seat is provided with a transverse moving mechanism, the bottom of the transverse moving mechanism is fixedly connected with an elastic connecting piece, the bottom of the elastic connecting piece is fixedly connected with a pushing structure, the height of the pushing structure is lower than that of the carrier plate structure and is located on one side of the carrier plate structure, and a marking assembly for detecting the surface leveling condition of the measuring point is further arranged on the pushing structure.
Preferably, the top of movable seat is provided with the drop hammer that can reciprocate, the fixed hydraulic cylinder that is provided with in top of grudging post, hydraulic cylinder telescopic end fixed mounting has electromagnetic chuck to absorb the drop hammer and drive and drop the hammer and can reciprocate, the movable seat is close to the fixed a plurality of shock attenuation piece that is provided with on the face of drop hammer lower surface.
Preferably, the carrier plate structure includes fixed connection in the fixed column of movable seat bottom, the bottom fixed mounting of fixed column has the carrier plate, pushing away material structure height and being less than the lower surface of carrier plate and being located one side of carrier plate.
Preferably, the lateral shifting mechanism includes the mounting bracket of fixed connection in the movable seat bottom, transversely be provided with slide bar and pivoted threaded rod on the lateral wall of mounting bracket, the threaded rod is parallel to each other with the slide bar, the length of threaded rod and slide bar is greater than the diameter of loading board, install the motor that is used for driving threaded rod rotation on the lateral wall of mounting bracket, threaded connection has the thread bush on the lateral wall of threaded rod, the slip cap is equipped with the sliding sleeve on the lateral wall of slide bar, the equal fixedly connected with in bottom of thread bush and sliding sleeve elastic connection spare, two elastic connection spare's bottom downwardly extending, pushing away material structure fixed connection is between two elastic connection spare and is located elastic connection spare's bottom.
Preferably, the elastic connecting piece comprises an outer pipe body, an inner inserting shaft and a first spring, wherein the inner inserting shaft is inserted into the outer pipe body and is in sliding connection with the inner wall of the outer pipe body, and the first spring is fixedly connected between the top end of the inner inserting shaft and the inner top end of the outer pipe body.
Preferably, the pushing structure comprises a pushing plate fixedly connected between the two inner inserting shafts, the pushing plate is located at the bottom end of the inner inserting shafts, the height of the pushing plate is lower than the lower surface of the bearing plate, and the elastic connecting piece and the pushing plate are located on one side of the bearing plate.
Preferably, the lower surface of push plate upwards has seted up a plurality of smooth chambeies, and is a plurality of smooth chambeies are along the length direction linear arrangement of push plate, mark the subassembly including pegging graft at the inside floating detection structure of a plurality of smooth chambeies and the flowing back structure of fixed mounting in the push plate outside, the flowing back chamber has been seted up to the inside of floating detection structure, the inside of flowing back structure is linked together with the inside of flowing back chamber.
Preferably, the floating detection structure comprises a plurality of movable rods inserted into a plurality of sliding cavities respectively, each movable rod is fixedly provided with a circular arc seesaw at the bottom end of the movable rod and one side close to the bearing plate, each movable rod is in sliding connection with the inner wall of the corresponding sliding cavity and is tightly attached to the inner wall of the sliding cavity, a second spring is fixedly connected between the top end of the movable rod and the inner top end of the sliding cavity, each movable rod is internally provided with a liquid discharging cavity, the upper end and the lower end of the liquid discharging cavity are respectively provided with an upper inlet and a lower outlet, the upper inlet penetrates through the side wall of the movable rod and is attached to the inner side wall of the sliding cavity, the lower outlet penetrates through the bottom of the movable rod, and the liquid discharging structure is communicated with the upper inlet of the liquid discharging cavity inside each movable rod.
Preferably, the liquid discharging structure comprises a liquid distribution pipe fixedly arranged on the outer side wall of the pushing plate, a liquid storage tank filled with colored marking liquid is fixedly arranged on the base, a guide pipe used for discharging the colored marking liquid is arranged on the side wall of the liquid storage tank, one end of the guide pipe, which is far away from the liquid storage tank, is connected with the liquid distribution pipe through an electromagnetic valve, each guide pipe is communicated with the liquid distribution pipe, a lower through hole and an upper through hole are respectively arranged on the inner side wall of the sliding cavity in a penetrating mode, a notch with a size larger than that of the upper through hole is formed in the position, opposite to the upper through hole, of the inner side wall of the sliding cavity, an interval is arranged between the lower through hole and the notch, the top end of the notch is lower than the top end of an opposite movable rod, each upper through hole on the side wall of the sliding cavity is communicated with an upper branch pipe, and each lower through hole on the side wall of the sliding cavity is communicated with the inner part of the liquid distribution pipe.
Preferably, the stiffness coefficient of the second spring is smaller than the stiffness coefficient of the first spring.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the cooperation of the transverse moving mechanism, the elastic connecting piece and the pushing plate, before the bearing plate descends to be in contact with the road surface, the pushing plate connected to the bottom end of the elastic connecting piece is firstly close to the position close to the road surface, the threaded rod is driven by the motor to rotate, under the mutual cooperation of the sliding rod and the sliding sleeve, the pushing plate can transversely move along the axial direction of the threaded rod and pass through the lower part of the bearing plate, and the pushing plate can further automatically push large-particle stones below the bearing plate away from the contact position of the bearing plate and the road surface, so that the condition that equipment damage is caused by the fact that the bearing plate is pressed on the large stones is effectively avoided, and meanwhile, the accuracy of a detection result is improved. The transverse moving mechanism is automatically controlled through a program, manual intervention is not needed, automatic cleaning of the detection position is achieved, and convenience and rapidness are achieved.
2. According to the invention, through the cooperation of the transverse moving mechanism, the elastic connecting piece, the pushing plate, the floating detection structure and the liquid discharge structure, the bottom of the pushing plate is provided with a plurality of movable rods which can independently move up and down, and in the process of being matched with the pushing plate to clean stones, the movable rods are extruded and slide with the surface of the detection position, and the liquid discharge structure can be controlled to automatically mark the excessive concave or convex local positions according to the difference of the concave-convex degree of the surface of the detection position. The technician can rapidly judge whether the detection result of the corresponding detection position is preferable or not according to the marking condition, and the accuracy and the credibility of the detection result are ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the present invention;
FIG. 3 is a front elevational view of the structure of the present invention;
FIG. 4 is a schematic view of the bottom of a partial structure of the present invention;
FIG. 5 is a partial structural elevation view of the present invention;
FIG. 6 is a schematic diagram of a pushing structure and its connecting parts according to the present invention;
FIG. 7 is a partial side cross-sectional view of the floating detection structure and drain structure of the present invention.
In the figure: 1. a base; 2. a base; 3. a vertical frame; 4. a movable seat; 5. drop hammer; 6. a hydraulic cylinder; 7. a shock absorbing member; 8. fixing the column; 9. a carrying plate; 10. a mounting frame; 11. a threaded rod; 12. a slide bar; 13. a thread sleeve; 14. a sliding sleeve; 15. an elastic connection member; 15A, an outer tube; 15B, interpolation axis; 15C, a first spring; 16. a pushing plate; 17. a sliding cavity; 18. a movable rod; 19. a second spring; 20. arc seesaw; 21. a liquid discharge cavity; 22. a lower through hole; 23. an upper through hole; 24. a notch; 25. a liquid storage tank; 26. a conduit; 27. a liquid distribution pipe; 28A, upper branch pipes; 28B, lower branch; 29. an electromagnetic valve; 30. and lifting the control member.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 to 7:
embodiment one: the invention provides a rapid drop hammer type deflection instrument, which comprises a base 1 and a base 2 fixedly connected to the top end of the base 1, wherein the top end of the base 2 is fixedly connected with a vertical frame 3, a movable seat 4 which is driven to move up and down by a lifting control piece 30 is arranged on the vertical frame 3, a carrier plate structure is fixedly arranged at the bottom end of the movable seat 4, a drop hammer 5 which can move up and down is arranged above the movable seat 4, a hydraulic cylinder 6 is fixedly arranged at the top end of the vertical frame 3, an electromagnetic chuck is fixedly arranged at the telescopic end of the hydraulic cylinder 6 so as to absorb the drop hammer 5 and drive the drop hammer 5 to move up, and a plurality of shock absorbing pieces 7 are fixedly arranged on the surface of the movable seat 4, which is close to the lower surface of the drop hammer 5. The carrier plate structure includes fixed column 8 of fixed connection in movable seat 4 bottom, and the bottom fixed mounting of fixed column 8 has carrier plate 9, and the pushing structure height is less than the lower surface of carrier plate 9 and is located one side of carrier plate 9. The shock absorbing member 7 is provided to protect the striking position of the drop hammer 5 against the movable seat 4 (the above is a prior art composition, and the specific construction is not described too much).
Wherein, the bottom of movable seat 4 is provided with lateral shifting mechanism, and lateral shifting mechanism's bottom fixedly connected with elastic connection spare 15, elastic connection spare 15's bottom fixedly connected with pushing away material structure, pushing away material structure highly is less than the carrier plate structure and is located one side of carrier plate structure, pushing away material structure and still being provided with the mark subassembly that is used for detecting the measurement station surface and levels the condition. The marking component can detect whether the road surface flatness meets the detection requirement or not, and the accuracy of the detection result is ensured.
Further, lateral shifting mechanism includes the mounting bracket 10 of fixed connection in movable seat 4 bottom, transversely be provided with slide bar 12 and rotatable threaded rod 11 on the lateral wall of mounting bracket 10, threaded rod 11 is parallel to each other with slide bar 12, the length of threaded rod 11 and slide bar 12 is greater than the diameter of loading board 9, install the motor that is used for driving threaded rod 11 rotation on the lateral wall of mounting bracket 10, threaded connection has thread bush 13 on the lateral wall of threaded rod 11, the slip cap is equipped with sliding sleeve 14 on the lateral wall of slide bar 12, the equal fixedly connected with elastic connection spare 15 of bottom of thread bush 13 and sliding sleeve 14, the bottom downwardly extending of two elastic connection spare 15 pushes away material structure fixed connection and is located the bottom of elastic connection spare 15 between two elastic connection spare 15.
Further, the elastic connection member 15 includes an outer tube 15A, an inner insertion shaft 15B, and a first spring 15C, where the inner insertion shaft 15B is inserted into the outer tube 15A and slidably connected to an inner wall of the outer tube 15A, and the first spring 15C is fixedly connected between a top end of the inner insertion shaft 15B and an inner top end of the outer tube 15A.
As a preferred scheme, the pushing structure comprises a pushing plate 16 fixedly connected between two interpolation shafts 15B, the pushing plate 16 is located at the bottom end of the interpolation shaft 15B, the height of the pushing plate 16 is lower than the lower surface of the bearing plate 9, and the elastic connecting piece 15 and the pushing plate 16 are located at one side of the bearing plate 9.
Specifically, when the road settlement deformation is detected, the device is moved to a specified position, and the movable seat 4 is controlled to descend by a specified distance by the lifting control member 30. Before the carrier plate 9 descends to contact the road surface, the pushing plate 16 connected to the bottom end of the elastic connection member 15 approaches to a height close to the road surface (at this height, the bottom end of the pushing plate 16 is closer to the road surface, the interval between the bottom end of the pushing plate 16 and the road surface is insufficient to accommodate the passage of larger stones), and then the lifting control member 30 automatically controls the movable seat 4 to stop descending, and the carrier plate 9 is not in contact with the road surface.
Through the rotation of the motor-driven threaded rod 11, under the mutual cooperation of the sliding rod 12 and the sliding sleeve 14 and the connection arrangement between the elastic connecting piece 15 and the pushing plate 16, the motor-driven threaded rod 11 rotates, so that the threaded sleeve 13 and the sliding sleeve 14 can synchronously and transversely move. The push plate 16 is then moved transversely in the axial direction of the threaded rod 11 and passes under the carrier plate 9 in the connected arrangement of the elastic connection 15. In the process that the pushing plate 16 passes below the bearing plate 9, the pushing plate 16 can automatically push out large granular stones below the bearing plate 9 from the subsequent contact position of the bearing plate 9 and the road surface until the pushing plate 16 completely moves to the other side of the bearing plate 9, and the motor automatically stops rotating. At this time, the lifting control member 30 automatically controls the movable seat 4 to continue to move downwards until the bearing plate 9 automatically stops when it abuts against the road surface detection position (the pushing plate 16 stops moving after moving to the other side of the bearing plate 9, and after the bearing plate 9 contacts with the road surface, the elastic connection member 15 is adaptively contracted due to the extrusion of the road surface to the pushing plate 16).
Thereupon, the hydraulic cylinder 6 automatically stretches out and draws back, and the drop hammer 5 above the movable seat 4 is grabbed by the electromagnetic chuck and lifted for a certain distance. The electromagnetic chuck is powered off again, the drop hammer 5 freely falls and impacts the upper part of the movable seat 4, so that the impact force generated by the falling of the drop hammer 5 is transmitted to the bearing plate 9 below the movable seat 4, the detection position generates adaptive sedimentation deformation, and data detection is performed through the corresponding sensor. After the detection is completed, the bearing plate 9 is lifted, and the motor drives the pushing plate 16 to reset automatically.
Through the design of above-mentioned scheme, before the loading board 9 supports on the road surface again, the big granule stone of loading board 9 below can be cleared up automatically to the promotion board 16, has effectively avoided follow-up loading board 9 oppression to cause the condition emergence of equipment damage on big stone, can not exist simultaneously and lead to the local excessively protruding uneven condition because of big granule stone's existence, has promoted the accuracy of testing result. The operation between the motor and the lifting control piece 30 is sequentially carried out through automatic control of a program, manual intervention is not needed, automatic cleaning of the detection position is achieved, and convenience and rapidness are achieved.
Embodiment two: the present embodiment is basically the same as the previous embodiment, except that the lower surface of the pushing plate 16 is provided with a plurality of sliding cavities 17, the sliding cavities 17 are linearly arranged along the length direction of the pushing plate 16, the marking assembly comprises a floating detection structure inserted in the sliding cavities 17 and a liquid discharging structure fixedly installed on the outer side of the pushing plate 16, the liquid discharging cavity 21 is provided in the floating detection structure, and the inside of the liquid discharging structure is communicated with the inside of the liquid discharging cavity 21.
As a preferred scheme, the floating detection structure comprises a plurality of movable rods 18 inserted into the sliding cavities 17 respectively, the bottom end of each movable rod 18 and one side close to the bearing plate 9 are fixedly provided with arc wanes 20, each movable rod 18 is in sliding connection with the inner wall of the corresponding sliding cavity 17 and is tightly attached to the inner wall of the sliding cavity 17, and the tightness of a gap between the movable rod 18 and the inner wall of the corresponding sliding cavity 17 is ensured (a corresponding sealing gasket can be additionally arranged to improve the tightness). A second spring 19 is fixedly connected between the top end of the movable rod 18 and the inner top end of the sliding cavity 17, and the stiffness coefficient of the second spring 19 is smaller than that of the first spring 15C. The inside of each movable rod 18 is provided with a liquid discharging cavity 21, the upper end and the lower end of the liquid discharging cavity 21 are respectively provided with an upper inlet and a lower outlet, the upper inlet penetrates through the side wall of the movable rod 18 and is attached to the inner side wall of the sliding cavity 17, the lower outlet penetrates through the bottom of the movable rod 18, and the liquid discharging structure is communicated with the upper inlet of the liquid discharging cavity 21 inside each movable rod 18. The arrangement of the arc seesaw 20 can enable the bottom end of the movable rod 18 to slide smoothly relatively between the road surfaces in the process of traversing along with the pushing plate 16, and the movable rod 18 can be lifted up and down adaptively along with the fluctuation of the road surfaces. Here, the length of the circular arc rocker 20 may be set to be relatively short, so that it is avoided that the road surface fluctuation of a small range cannot be detected due to overlong.
It should be noted that, since the stiffness coefficient of the second spring 19 is smaller than that of the first spring 15C, the movable rod 18 will be compressed correspondingly during the process of pressing the movable rod in contact with the road surface, but the first spring 15C will not be compressed significantly, so that the movement interference between the movable rod and the carrier plate 9 when the top end of the pushing plate 16 is lifted up to cause lateral movement is avoided.
As a preferred scheme, the liquid discharging structure comprises a liquid distributing pipe 27 fixedly arranged on the outer side wall of the pushing plate 16, a liquid storage tank 25 filled with colored marking liquid is fixedly arranged on the base 1, a conduit 26 used for discharging the colored marking liquid is arranged on the side wall of the liquid storage tank 25, one end of the conduit 26, far away from the liquid storage tank 25, is connected with the liquid distributing pipe 27, the conduit 26 is communicated with the liquid distributing pipe 27 through an electromagnetic valve 29, a lower through hole 22 and an upper through hole 23 are respectively arranged on the inner side wall of each sliding cavity 17 in a penetrating manner, a notch 24 with a size larger than that of the upper through hole 23 is formed in a position, opposite to the upper through hole 23, of the inner side wall of each sliding cavity 17, a gap is arranged between the lower through hole 22 and the notch 24, the top end of the notch 24 is lower than the top end of an opposite movable rod 18, the upper through hole 23 on the side wall of each sliding cavity 17 is communicated with an upper branch pipe 28A, the lower through hole 22 on the side wall of each sliding cavity 17 is communicated with a lower branch pipe 28B, and the upper branch pipe 28A is communicated with the inside of the liquid distributing pipe 27.
The corresponding pump body is disposed inside the liquid storage tank 25 to convey the colored marking liquid in the liquid storage tank 25 into the conduit 26. Normally the liquid distribution pipe 27 is not opened, and the liquid distribution pipe 27 is opened only in the process of transversely moving the pushing plate 16 to clean stones. When the opening and closing time of the liquid distribution pipe 27 is set, and the pushing plate 16 moves to the other side of the bearing plate 9, the liquid distribution pipe 27 can be automatically closed.
In particular, the uneven test point position may cause errors to the measurement result of the drop hammer deflectometer, and this situation should be avoided as much as possible when selecting the test point. For this purpose, the pusher plate 16 is lowered to a prescribed height so as to clean the large particles Dan Zishi under the carrier plate 9, and the movable bars 18 at the bottom of the pusher plate 16 are brought into contact with and pressed against each other prior to the road surface. Since the movable rod 18 can slide up and down in the slide chamber 17 inside the push plate 16, the movable rod 18 slides up inside the slide chamber 17 after being pressed against the road surface. Under the condition of flat road surface, the upper inlet of the liquid discharging cavity 21 in the movable rod 18 can relatively slide between the lower through hole 22 and the notch 24, at the moment, the pushing plate 16 stops to continuously descend, and the movable rod 18 cannot continuously slide upwards relative to the sliding cavity 17.
When the pushing plate 16 moves transversely to clean the stones, the bottom ends of the movable rods 18 slide relative to the road surface, and the stones are pushed to move out of the lower part of the bearing plate 9 together under the cooperation of the pushing plate 16. Since each movable rod 18 can move up and down independently, when the lower part of a certain movable rod 18 excessively concavities or bulges during the traversing process of the movable rod 18, the road surface of the point can force the upper inlet of the liquid draining cavity 21 in the movable rod 18 to slide out between the lower through hole 22 and the notch 24. If this point is excessively convex, the upper inlet of the drainage chamber 21 will be opposite to the notch 24 (the notch 24 has a certain length, and in a certain range of the road surface convex degree at this point, the upper inlet of the drainage chamber 21 can be opposite to the notch 24); if this point is excessively depressed, the upper inlet of the drainage chamber 21 is again opposed to the lower through hole 22. The inside of the drainage chamber 21 can communicate with the inside of the liquid distribution pipe 27 regardless of whether the upper inlet of the drainage chamber 21 is opposite to the notch 24 or opposite to the lower through hole 22. The electromagnetic valve 29 is in an open state, the colored marking liquid in the liquid storage tank 25 is led into the liquid distribution pipe 27 through the guide pipe 26, then led into the upper through hole 23 or the lower through hole 22 through the upper branch pipe 28A or the lower branch pipe 28B, further can enter the liquid discharge cavity 21 from the upper inlet of the liquid discharge cavity 21, and finally is automatically discharged from the lower outlet of the liquid discharge cavity 21. The discharged colored marking liquid may strike in an excessively concave or excessively convex position.
Therefore, in the traversing process of the movable rods 18, different movable rods 18 can be independently marked, the area, which needs to be contacted with the road surface, below the bearing plate 9 can be automatically marked, and a technician can quickly judge whether the corresponding detection position can be detected or whether the detection result is preferable or not according to the marking condition, so that the accuracy and the credibility of the detection result are ensured.
Embodiment III: this embodiment is basically the same as the previous embodiment except that the top end of each sliding chamber 17 is perforated with air holes for balancing air pressure (as shown in fig. 6).
Specifically, in the process that the movable rod 18 moves up and down relative to the sliding cavity 17, in order to avoid the influence of the air pressure of the cavity in the sliding cavity 17 on the movement of the movable rod 18, an air hole for balancing the air pressure is formed in the top end of the sliding cavity 17, so that the air pressure between the cavity in the sliding cavity 17 and the outside can be balanced, and the movable rod 18 can slide effectively.
While embodiments of the present invention have been shown and described above for purposes of illustration and description, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. The utility model provides a quick drop hammer formula deflection appearance which characterized in that: the lifting device comprises a base (1) and a base (2) fixedly connected to the top end of the base (1), wherein the top end of the base (2) is fixedly connected with a vertical frame (3), a movable seat (4) which is driven to move up and down by a lifting control piece (30) is arranged on the vertical frame (3), and a carrier plate structure is fixedly arranged at the bottom end of the movable seat (4);
the bottom of movable seat (4) is provided with transverse movement mechanism, transverse movement mechanism's bottom fixedly connected with elastic connection spare (15), the bottom fixedly connected with of elastic connection spare (15) pushes away the material structure, it is highly less than the carrier plate structure and is located one side of carrier plate structure to push away the material structure, it still is provided with the mark subassembly that is used for detecting the measurement station surface leveling condition to push away the material structure.
2. A rapid drop hammer deflectometer as defined in claim 1, wherein: the hydraulic lifting device is characterized in that a drop hammer (5) capable of moving up and down is arranged above the movable seat (4), a hydraulic oil cylinder (6) is fixedly arranged at the top end of the vertical frame (3), an electromagnetic chuck is fixedly arranged at the telescopic end of the hydraulic oil cylinder (6) so as to absorb the drop hammer (5) and drive the drop hammer (5) to move up, and a plurality of shock absorbing pieces (7) are fixedly arranged on the surface, close to the lower surface of the drop hammer (5), of the movable seat (4).
3. A rapid drop hammer deflectometer as defined in claim 2, wherein: the carrier plate structure comprises a fixed column (8) fixedly connected to the bottom end of the movable seat (4), a carrier plate (9) is fixedly arranged at the bottom end of the fixed column (8), and the height of the pushing structure is lower than the lower surface of the carrier plate (9) and is located on one side of the carrier plate (9).
4. A rapid drop hammer deflectometer as defined in claim 3, wherein: the utility model provides a transverse moving mechanism includes mounting bracket (10) of fixed connection in movable seat (4) bottom, transversely be provided with slide bar (12) and pivoted threaded rod (11) on the lateral wall of mounting bracket (10), threaded rod (11) are parallel to each other with slide bar (12), the length of threaded rod (11) and slide bar (12) is greater than the diameter of loading board (9), install the motor that is used for driving threaded rod (11) rotation on the lateral wall of mounting bracket (10), threaded connection has thread bush (13) on the lateral wall of threaded rod (11), the slip cap is equipped with sliding sleeve (14) on the lateral wall of slide bar (12), the equal fixedly connected with of bottom of thread bush (13) and sliding sleeve (14) elastic connection spare (15), two the bottom downwardly extending of elastic connection spare (15), pushing away material structure fixed connection just is located the bottom of elastic connection spare (15) between two elastic connection spare (15).
5. A rapid drop hammer deflectometer as defined in claim 4, wherein: the elastic connecting piece (15) comprises an outer pipe body (15A), an inner inserting shaft (15B) and a first spring (15C), wherein the inner inserting shaft (15B) is inserted into the outer pipe body (15A) and is in sliding connection with the inner wall of the outer pipe body (15A), and the first spring (15C) is fixedly connected between the top end of the inner inserting shaft (15B) and the inner top end of the outer pipe body (15A).
6. A rapid drop hammer deflectometer as defined in claim 5, wherein: the pushing structure comprises pushing plates (16) fixedly connected between the two interpolation shafts (15B), the pushing plates (16) are located at the bottom ends of the interpolation shafts (15B), the height of each pushing plate (16) is lower than the lower surface of the corresponding bearing plate (9), and the elastic connecting pieces (15) and the pushing plates (16) are located on one side of the corresponding bearing plate (9).
7. A rapid drop hammer deflectometer as defined in claim 6, wherein: the utility model discloses a liquid discharge device, including pushing board (16), a plurality of smooth chamber (17) have been seted up upwards to the lower surface of pushing board (16), a plurality of smooth chamber (17) are along the length direction linear arrangement of pushing board (16), mark the subassembly including pegging graft at the inside floating detection structure and the liquid discharge structure of fixed mounting in pushing board (16) outside of a plurality of smooth chamber (17), liquid discharge chamber (21) have been seted up to the inside of floating detection structure, liquid discharge structure's inside is linked together with the inside of liquid discharge chamber (21).
8. A rapid drop hammer deflectometer as defined in claim 7, wherein: the utility model provides a floating detection structure is including pegging graft respectively in a plurality of movable rods (18) of a plurality of smooth chambeies (17) inside, every the bottom of movable rod (18) just is close to the circular arc wane (20) that one side of loading board (9) all is fixed to be provided with, every movable rod (18) and the inner wall sliding connection of relative smooth chambeies (17) and closely laminate with the inner wall of smooth chambeies (17), fixedly connected with second spring (19) between the top of movable rod (18) and the interior top of smooth chambeies (17), every the inside of movable rod (18) has all been seted up flowing back chamber (21), the upper and lower both ends of flowing back chamber (21) are established respectively and are gone up import and export down, go up the lateral wall that the import link up movable rod (18) and laminate with the inside wall of smooth chambeies (17), export link up the bottom of movable rod (18), the flowing back structure is linked together with the last import of the inside flowing back chamber (21) of every movable rod (18).
9. A rapid drop hammer deflectometer as defined in claim 8, wherein: the liquid discharging structure comprises a liquid distribution pipe (27) fixedly mounted on the outer side wall of a pushing plate (16), a liquid storage tank (25) filled with colored marking liquid is fixedly arranged on a base (1), a guide pipe (26) used for discharging the colored marking liquid is arranged on the side wall of the liquid storage tank (25), one end, far away from the liquid storage tank (25), of the guide pipe (26) is connected with the liquid distribution pipe (27), the guide pipe (26) is communicated with the liquid distribution pipe (27) through an electromagnetic valve (29), each upper branch pipe (23) on the side wall of a sliding cavity (17) is provided with a lower through hole (22) and an upper through hole (23) in a penetrating mode, a notch (24) with a size larger than that of the upper through hole (23) is formed in the position, a space is arranged between the lower through hole (22) and the notch (24), the top end of the notch (24) is lower than the top end of an opposite movable rod (18), each upper branch pipe (23) on the side wall of the sliding cavity (17) is communicated with each lower branch pipe (28) on the side wall of the sliding cavity (17).
10. A rapid drop hammer deflectometer as defined in claim 8, wherein: the stiffness coefficient of the second spring (19) is smaller than the stiffness coefficient of the first spring (15C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311593189.5A CN117606903A (en) | 2023-11-27 | 2023-11-27 | Quick drop hammer type deflection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311593189.5A CN117606903A (en) | 2023-11-27 | 2023-11-27 | Quick drop hammer type deflection instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117606903A true CN117606903A (en) | 2024-02-27 |
Family
ID=89943827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311593189.5A Withdrawn CN117606903A (en) | 2023-11-27 | 2023-11-27 | Quick drop hammer type deflection instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117606903A (en) |
-
2023
- 2023-11-27 CN CN202311593189.5A patent/CN117606903A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20240227 |
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| WW01 | Invention patent application withdrawn after publication |