CN113804866B - Roadbed pavement deflection detection device - Google Patents
Roadbed pavement deflection detection device Download PDFInfo
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- CN113804866B CN113804866B CN202111080493.0A CN202111080493A CN113804866B CN 113804866 B CN113804866 B CN 113804866B CN 202111080493 A CN202111080493 A CN 202111080493A CN 113804866 B CN113804866 B CN 113804866B
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- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 230000001681 protective effect Effects 0.000 claims abstract description 50
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 239000000523 sample Substances 0.000 claims description 37
- 238000004804 winding Methods 0.000 claims description 14
- 230000003139 buffering effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 244000309464 bull Species 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/42—Road-making materials
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- General Health & Medical Sciences (AREA)
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Abstract
The invention belongs to the technical field of detection devices, and particularly relates to a roadbed pavement deflection detection device, which comprises: a case; the protective box is arranged in the box body and is used for protecting the detector; the detector is arranged in the protective box; the inside of the box body is also connected with a protection component for protecting the detector; the inside of the protective box is also provided with an out-of-mouth assembly which is used for extending the detector out of the protective box for detection; the guard assembly includes: and the protection plate is connected with the protection box. According to the invention, the suspension assembly is arranged, so that the detector can be suspended, the detector is prevented from being damaged due to vibration in movement, and in the embodiment, the detector is enabled to ensure the detection capability and simultaneously greatly improve the protection capability of the detector by combining the protection box, the protection assembly, the detection assembly and the suspension assembly, so that the detector can meet various use scenes.
Description
Technical Field
The invention belongs to the technical field of detection devices, and particularly relates to a roadbed and pavement deflection detection device.
Background
The deflection generally refers to a hundred total vertical deformation value or a vertical rebound deformation value generated by a wheel gap position of a roadbed or a pavement surface under the load action of a specified standard vehicle, the unit is 0.01mm, the deflection of the pavement reflects the integral rigidity and strength of a roadbed pavement structure, and has certain internal relation with the use state of the pavement, and the larger the deflection value is, the larger the plastic deformation of the pavement structure is, meanwhile, the fatigue resistance is poor, and the heavy traffic is difficult to bear; on the contrary, the pavement structure has good fatigue resistance and can bear heavy traffic.
When the existing roadbed pavement deflection detection device is used for detecting deflection of the roadbed pavement, the detection device cannot be protected, and the detection device is easily damaged due to the fact that part of roadbed pavement is complex in road conditions, and normal detection of the device is affected.
From the above, the existing roadbed and pavement deflection detection device cannot protect the detection device, and the service life of the detection device is affected.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a roadbed and pavement deflection detection device, so as to solve the above technical problems, where the roadbed and pavement deflection detection device includes: a case; and a protective box arranged in the box body; the detector is arranged in the protective box; the inside of the box body is also connected with a protection component for opening the protection box; the inside of the protective box is also provided with an out-of-mouth assembly which is used for extending the detector out of the protective box for detection; the guard assembly includes: the protection plate is rotationally connected with the protection box; the adjusting rod is rotationally connected with the protective box; the balancing weight is connected to one side of the adjusting rod; one side of the adjusting rod, which is far away from the balancing weight, is attached with a C-shaped clamping strip; the other side of the C-shaped clamping strip is fixedly connected with the protective box through a rotating shaft, and the C-shaped clamping strip is fixedly connected with the protective plate; and a driving piece is further arranged on one side of the adjusting rod and used for driving the adjusting rod to rotate.
Further, the driving member includes: a rotating rod connected with the adjusting rod; a rotating column fixedly connected with the rotating rod; and the protective power piece is arranged in the protective box and is used for providing power for the rotation of the rotary column.
Further, the probe assembly includes: the fixed plate is connected inside the protective box in a sliding way; and a groove formed on the fixing plate; the probe rod is connected in the groove in a sliding way; the probe rod is connected with the fixed plate through a spring hook; and one side of the probe rod is fixedly connected with an exploration connecting piece, and the exploration connecting piece is used for extending the detector through the probe rod.
Further, the male connector includes: the servo motor is arranged at one side of the fixed plate; and a winding wheel connected with the servo motor; the winding wheel is connected with a connecting rope; and a steering wheel arranged at one side of the connecting rope.
Further, the roadbed and pavement deflection detection device further comprises: and the suspension assembly is connected with the fixed plate and is connected inside the box body and used for suspending and buffering the fixed plate.
Further, the suspension assembly includes: the hook is connected with the box body; and a sleeve connected to the hook; a buffer spring arranged inside the sleeve; and a buffer rod provided inside the buffer spring; one end of the buffer spring is connected with the buffer rod, and the other end of the buffer spring is connected with the sleeve; one side of the buffer rod is connected with a connecting block; the buffer rod sliding connection is in sheathed tube inside, the connecting block is connected with the fixed plate.
Further, the both sides of connecting block all are equipped with the bolster, one side and the protective housing of bolster are connected, and the opposite side is connected with the connecting block for the removal to the connecting block is buffered.
According to the roadbed pavement deflection detection device, the protection box is arranged, so that the detector can be stored in the protection box when not in use, the protection box is controlled through the protection assembly, the detection assembly is arranged, the detector extends out of the protection box when in use, and is retracted for protection after the detection assembly is used, so that the detection capability of the device on the roadbed pavement is guaranteed, meanwhile, the damage of the device is avoided, the detection capability and the service life are influenced, the suspension assembly is arranged, the device can suspend the detector, the detector is prevented from vibrating in movement to cause damage, and in the embodiment, the detection capability of the detector is guaranteed, meanwhile, the protection capability of the detector is greatly improved, and the detector is sufficient for meeting various use scenes through the combination of the protection box, the protection assembly, the detection assembly and the suspension assembly.
Drawings
Fig. 1 is a schematic structural diagram of a roadbed and pavement deflection detection device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an internal structure of a box body of a roadbed and pavement deflection detection device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing connection between a detection instrument and a detection component of a subgrade and pavement deflection detection device according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a protection component of a roadbed and pavement deflection detection device according to an embodiment of the present invention;
FIG. 5 is a side view of a protection assembly of a roadbed and pavement deflection detection device according to an embodiment of the present invention;
Fig. 6 is a schematic view of a construction of an extending component of a roadbed and pavement deflection detection device according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of connection between a connecting rope and a winding wheel of a roadbed and pavement deflection detection device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a suspension assembly of a roadbed and pavement deflection detection device according to an embodiment of the present invention.
In the accompanying drawings: 1. a case; 2. a protective box; 3. a detector; 4. a protective assembly; 5. a probe assembly; 6. a protection plate; 7. an adjusting rod; 8. balancing weight; 9. c-shaped clamping strips; 10. a rotating shaft; 11. a rotating rod; 12. a rotating column; 13. a forward and reverse rotation motor; 14. a fixing plate; 15. a groove; 16. a probe rod; 17. a spring hook; 18. a connecting rope; 19. a steering wheel; 20. a winding wheel; 21. a servo motor; 22. a hook; 23. a sleeve; 24. a buffer spring; 25. a buffer rod; 26. a connecting block; 27. a limit spring; 28. a telescopic rod.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Referring to fig. 1, 2 and 3, the roadbed and pavement deflection detection device provided in the embodiment of the present invention includes:
A case 1; and a protective case 2 provided inside the case 1;
a detector 3 provided inside the protection box 2;
the inside of the box body 1 is also connected with a protection component 4 for opening the protection box 2;
the inside of the protective box 2 is also provided with an out-of-mouth component 5 which is used for extending the detector 3 out of the protective box 2 for detection;
The guard assembly 4 comprises:
The protection plate 6 is rotationally connected with the protection box 2;
the adjusting rod 7 is rotationally connected with the protective box 2; and a balancing weight 8 connected to one side of the adjusting rod 7;
one side of the adjusting rod 7 far away from the balancing weight 8 is attached with a C-shaped clamping strip 9; the other side of the C-shaped clamping strip 9 is fixedly connected with the protective box 2 through a rotating shaft 10, and the C-shaped clamping strip 9 is fixedly connected with the protective plate 6;
A driving piece is further arranged on one side of the adjusting rod 7 and used for driving the adjusting rod to rotate.
In the embodiment of the invention, the size and shape of the box body 1 are not limited, the box body 1 can be cabinet-shaped or box-shaped, the specific shape of the box body can be determined according to the size and shape of the detectors 3 in the box body 1, and meanwhile, a plurality of groups of detectors 3 can be arranged in the box body 1, so that the device can detect more performances of a road base pavement while detecting deflection of the road base pavement, the protective component 4 is arranged in the box body 1, the protective box 2 is arranged above the protective component 4, the protruding component 5 is arranged in the protective box 2, and the detectors 3 are fixedly connected below the protruding component 5.
During in-service use, detector 3 accomodates in the inside of protective housing 2, and when needs are examined road bed road surface, protective component 4 opens protective housing 2, and the subassembly 5 that stretches out detector 3 to the protective housing 2 outside, after detecting, detector 3 withdraws, and protective housing 2 closes.
In an embodiment of the present invention, the driving member includes: a rotating rod 11 connected with the adjusting rod 7;
a rotating post 12 fixedly connected with the rotating rod;
and a protective power member connected to one side of the rotary column 12 for providing power for rotation of the rotary column 12.
In this embodiment, guard plate 6 rotates through pivot 10 to be connected on the bottom of protective housing 2, the middle part of adjusting lever 7 rotates with protective housing 2 to be connected, one side fixedly connected with balancing weight 8 of adjusting lever 7, the opposite side laminating of adjusting lever 7 has C type card strip 9, the below and the guard plate 6 fixed connection of C type card strip 9, the middle part of adjusting lever 7 still laminating has bull stick 11, the opposite side fixedly connected with revolving post 12 of bull stick 11, one side of revolving post 12 still fixedly connected with protection power piece, wherein protection power piece is positive and negative rotation motor 13.
In this embodiment, when the protection plate 6 needs to be opened, the forward and reverse rotation motor 13 is started to rotate the rotary column 12 and drive the rotary rod 11 to rotate simultaneously, when the rotary rod 11 rotates, the rotary rod 11 presses the adjusting rod 7, and the adjusting rod 7 also presses the inner side of the C-shaped clamping strip 9, when the adjusting rod 7 rotates, the C-shaped clamping strip 9 is not pressed any more, the C-shaped clamping strip 9 is pressed from the upper end to the lower end, the lower part of the C-shaped clamping strip 9 rotates when the upper end is pressed, the protection box 2 is closed, when the contact point moves to the middle part, the C-shaped clamping strip 9 rotates when the middle part of the C-shaped clamping strip 9 is pressed, the protection box 2 can be opened, the upper end of the C-shaped clamping strip 9 cannot bear force according to the lever principle, the guard plate 6 of below takes place to rotate, guard plate 6 uses pivot 10 as the fulcrum this moment, but need set up (guard plate 6 left side quality is greater than right side quality), lead to C type card strip 9 unable to hold up guard plate 6, thereby make guard plate 6 rotate and open, when needs are closed guard plate 6, reverse start positive and negative rotation motor, make the steering column 12 rotate, and drive bull stick 11 to the opposite direction rotation, no longer extrude regulation pole 7 downwards, and the balancing weight 8 of regulation pole 7 opposite side is under self gravity effect, the opposite side perk of regulation pole 7, extrude C type card strip 9, lead to C type card strip 9 to reset, and drive guard plate 6 and close protective housing 2.
In addition to the above technical solution, the protection assembly 4 may further include:
a protection plate 6 connected with the protection box 2; and a hydraulic telescopic rod connected with the protection plate 6.
In this embodiment, one side of the hydraulic telescopic rod is rotatably connected with the protection plate 6, and the other side of the hydraulic telescopic rod is slidably connected to the case 1, and when the hydraulic telescopic rod is started, the protection plate 6 is rotated, so that the device can control the protection case 2.
In an embodiment of the present invention, referring to fig. 4 and 5, one side of the rotating rod 11 is attached to the adjusting rod 7, and one side of the adjusting rod 7 away from the balancing weight 8 is attached to the C-shaped clamping bar 9.
In this embodiment, when the bull stick 11 drives the one side that adjusts pole 7 and keep away from balancing weight 8 and move downwards, can lead to C type card strip 9 to take place to rotate, opens guard plate 6, when bull stick 11 no longer extrudees the regulating block, can make regulating block extrusion C type card strip 9, and C type card strip 9 takes place to rotate, closes guard plate 6.
In one embodiment of the present invention, referring to fig. 6, the probe assembly 5 includes:
A fixed plate 14 slidably connected inside the protection box 2; and a groove 15 formed on the fixing plate 14;
a probe rod 16 slidably connected to the inside of the recess 15; the probe rod 16 is connected with the fixed plate 14 through a spring hook 17;
One side of the probe rod 16 is fixedly connected with a probe connecting piece, and the probe connecting piece is used for stretching out the detector 3 through the probe rod 16.
In this embodiment, the fixing plate 14 is slidably connected inside the protection box 2, and the sliding direction is up and down sliding, the fixing plate 14 is fixedly connected below the suspension assembly, the probe rod 16 is fixedly connected with the detector, the other side of the probe rod 16 is slidably connected inside the groove 15, and the upper side of the probe rod 16 is fixedly connected with the protruding connecting piece.
In addition to the above technical solution, the projecting assembly 5 may further include:
The hydraulic telescopic rod is arranged in the protective box 2; and a feeler lever 16 connected to the hydraulic telescopic lever;
In this embodiment, the hydraulic telescopic link fixed connection is in the inside of protective housing 2, and the below one side fixedly connected with probe rod 16 of hydraulic telescopic link, the below and the detector 3 fixed connection of probe rod 16 in actual use, when needs use detector 3, start hydraulic telescopic link for detector 3 can stretch out, thereby accomplish the receive and release to detector 3.
In one embodiment of the present invention, referring to fig. 6 and 7, the male connector includes:
a servo motor 21 provided on one side of the fixed plate 14; and a take-up reel 20 connected to the servo motor 21;
the winding wheel 20 is connected with a connecting rope 18; and a steering wheel 19 provided on one side of the connecting rope 18.
In the embodiment of the invention, the extending connecting piece comprises a connecting rope 18, steering wheels 19, a winding wheel 20 and a servo motor 21, wherein the connecting rope 18 is fixedly connected above the probe rod 16, the steering wheels 19 are attached to the connecting rope 18, the number of the steering wheels 19 is two, the two same steering wheels 19 are both rotationally connected to the fixed plate 14, the winding wheel 20 is fixedly connected to the leftmost side of the connecting rope 18, the servo motor 21 is fixedly connected to one side of the winding wheel 20, the extending connecting piece can also be a hydraulic telescopic rod, the extending and the retracting of the detector 3 are controlled by controlling the hydraulic telescopic rod, and the fixed plate 14 and the probe rod 16 are also connected with the spring hook 17.
In actual use, the servo motor 21 is started to enable the winding wheel 20 to rotate and wind under the help of the steering wheel 19, the connecting rope 18 pulls the probe rod 16 to move upwards, when the probe rod 16 moves upwards, the detector 3 below the probe rod 16 also moves upwards along with the probe rod, so that the detector 3 is folded, when the detector 3 needs to be released, the servo motor 21 is started to enable the winding wheel 20 to rotate reversely, so that the probe rod 16 and the detector 3 move downwards under the action of gravity, and the spring hook 17 can support and limit the probe rod 16 and the detector 3 to avoid rapid lifting of the detector 3.
In one embodiment of the present invention, referring to fig. 6, the roadbed and pavement deflection detection device further includes:
And a suspension assembly connected to the fixing plate 14 for suspending and buffering the fixing plate 14.
In this embodiment, the suspension assembly is arranged, so that the device can suspend and support the detector 3, and the detector 3 can avoid collision with the outside or the protective box 2 when not in use, thereby further improving the protection capability of the device to the detector 3.
In one embodiment of the present invention, referring to fig. 8, the suspension assembly includes:
a hook 22 connected with the box body 1; and a sleeve 23 connected to the hanger 22;
A buffer spring 24 provided inside the sleeve 23; and a buffer rod 25 provided inside the buffer spring 24;
One end of the buffer spring 24 is connected with the buffer rod 25, and the other end is connected with the sleeve 23;
A connecting block 26 is connected to one side of the buffer rod 25;
The buffer rod 25 is slidably coupled to the inside of the sleeve 23, and the connection block 26 is coupled to the fixing plate 14.
In this embodiment, the hanger 22 is hung in the box 1, the sleeve 23 is fixedly connected in the hanger 22, the buffer rod 25 is slidably connected in the sleeve 23, the buffer spring 24 is further arranged on the outer side of the buffer rod 25, one side of the buffer spring 24 is connected with the buffer rod 25, the other side of the buffer spring 24 is connected with the sleeve 23, the buffer rod 25 penetrates through the sleeve 23 and is fixedly connected with the connecting block 26 below the buffer rod 25, the lower part of the connecting block 26 is connected with the fixed plate 14, two sides of the connecting block 26 are respectively and rotatably connected with a buffer piece, one side of each buffer piece is rotatably connected with the inner side wall of the protection box 2, the fixed plate 14 is slidably connected in the protection box 2, the sliding direction is in the vertical direction, the other side is connected with the connecting block 26, the buffer pieces are a limiting spring 27 and a telescopic rod 28, one side of the connecting block 26 is fixedly connected with the telescopic rod 28, the other side of the telescopic rod 28 is rotatably connected with the protection box 2, the outer side of the telescopic rod 28 is provided with the limiting spring 27, the number of the buffer pieces is two, the two identical buffer pieces are symmetrically distributed on two sides of the connecting block 26, wherein the buffer pieces can replace one side of the rubber rod to be connected with the protection box 2.
In actual use, when the detector 3 vibrates, the buffer rod 25 can be made to press the buffer spring 24, and meanwhile, the limiting springs 27 on two sides can limit the movement of the detector 3, so that the detector 3 is ensured to be stable in movement to the greatest extent, and shake and impact of the detector 3 are avoided.
In addition to the above technical solution, the suspension assembly according to the embodiment of the present invention may further include:
The damping shock absorber is connected with the fixed plate 14 on one side and the protective box 2 on the other side.
In this embodiment, the damping shock absorber is arranged to stabilize the detector 3, so as to avoid the detector 3 from shaking or being impacted.
In an embodiment of the present invention, referring to fig. 8, two sides of the connection block 26 are provided with a buffer, one side of the buffer is connected to the protection box 2, and the other side of the buffer is connected to the connection block 26, so as to buffer the movement of the connection block 26.
In this embodiment, the buffer rod 25 is slidable inside the sleeve 23, and dampens the vibration of the fixed plate 14 and the detector 3 by the buffer spring 24.
In actual use, the forward and reverse rotation motor is started to rotate the rotary column 12 and drive the rotary rod 11 to rotate simultaneously, when the rotary rod 11 rotates, the adjusting rod 7 is pressed downwards to be close to one side of the C-shaped clamping strip 9, when the adjusting rod 7 rotates, the C-shaped clamping strip 9 is not extruded any more, the upper end of the C-shaped clamping strip 9 cannot be stressed, according to the lever principle, the lower protection plate 6 rotates, at the moment, the protection plate 6 takes the rotary shaft 10 as a lever fulcrum, but the arrangement is needed (the left side mass of the protection plate 6 is larger than the right side mass), the C-shaped clamping strip 9 cannot lift the protection plate 6, so that the protection plate 6 rotates to be opened, when the protection plate 6 needs to be closed, the forward and reverse rotation motor is started reversely, the rotary column 12 rotates and drives the rotary rod 11 to rotate in the opposite direction, the adjusting rod 7 is not pressed downwards any more, the balancing weight 8 on the other side of the adjusting rod 7 moves downwards under the action of self gravity, the other side of the adjusting rod 7 tilts, the C-shaped clamping strip 9 is extruded, the C-shaped clamping strip 9 is reset, the protection plate 6 is driven to close the protection box 2, the servo motor 21 is started, the winding wheel 20 rotates, the probe rod 16 and the detector 3 move downwards under the action of gravity, the detector 3 is released, the spring hook 17 can support and limit the probe rod 16 and the detector 3, the detector 3 is prevented from ascending and descending rapidly, the winding wheel 20 rotates reversely and winds under the help of the steering wheel 19, the connecting rope 18 pulls the probe rod 16 to move upwards, and when the probe rod 16 moves upwards, the detector 3 is driven to move upwards by the probe rod 16, so that the detector 3 is completed to be retracted.
After moving or finishing using, the detector 3 vibrates, so that the buffer rod 25 extrudes the buffer spring 24, and meanwhile, the limiting springs 27 on two sides can limit the movement of the detector 3, thereby maximally ensuring that the detector 3 is kept stable in moving and avoiding shaking and impact of the detector 3.
Claims (4)
1. Roadbed pavement deflection detection device, its characterized in that, roadbed pavement deflection detection device includes:
A case; and a protective box arranged in the box body;
The detector is arranged in the protective box;
The inside of the box body is also connected with a protection component for opening the protection box;
The inside of the protective box is also provided with an out-of-mouth assembly which is used for extending the detector out of the protective box for detection;
The guard assembly includes:
the protection plate is rotationally connected with the protection box;
the adjusting rod is rotationally connected with the protective box; the balancing weight is connected to one side of the adjusting rod;
One side of the adjusting rod, which is far away from the balancing weight, is attached with a C-shaped clamping strip; the other side of the C-shaped clamping strip is fixedly connected with the protective box through a rotating shaft, and the C-shaped clamping strip is fixedly connected with the protective plate;
a driving piece is arranged on one side of the adjusting rod and used for driving the adjusting rod to rotate;
the driving member includes:
a rotating rod connected with the adjusting rod;
A rotating column fixedly connected with the rotating rod;
The protective power piece is connected to one side of the rotary column and used for providing power for rotation of the rotary column;
The probe assembly includes:
The fixed plate is connected inside the protective box in a sliding way; and a groove formed on the fixing plate;
the probe rod is connected in the groove in a sliding way; the probe rod is connected with the fixed plate through a spring hook;
one side of the probe rod is fixedly connected with an extension connecting piece, and the extension connecting piece is used for extending the detector through the probe rod;
the male connector includes:
the servo motor is arranged at one side of the fixed plate; and a winding wheel connected with the servo motor;
the winding wheel is connected with a connecting rope; and a steering wheel arranged at one side of the connecting rope.
2. The subgrade and road surface deflection detection device according to claim 1, further comprising:
And the suspension assembly is connected with the fixed plate and is connected inside the box body and used for suspending and buffering the fixed plate.
3. The subgrade and pavement deflection detection device of claim 2, wherein said suspension assembly comprises:
The hook is connected with the box body; and a sleeve connected to the hook;
A buffer spring arranged inside the sleeve; and a buffer rod provided inside the buffer spring;
one end of the buffer spring is connected with the buffer rod, and the other end of the buffer spring is connected with the sleeve;
One side of the buffer rod is connected with a connecting block;
The buffer rod sliding connection is in sheathed tube inside, the connecting block is connected with the fixed plate.
4. The subgrade and pavement deflection detection device according to claim 3, wherein two sides of the connecting block are respectively provided with a buffer piece, one side of each buffer piece is connected with the protective box, and the other side of each buffer piece is connected with the connecting block for buffering movement of the connecting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111080493.0A CN113804866B (en) | 2021-09-15 | 2021-09-15 | Roadbed pavement deflection detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111080493.0A CN113804866B (en) | 2021-09-15 | 2021-09-15 | Roadbed pavement deflection detection device |
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| CN113804866A CN113804866A (en) | 2021-12-17 |
| CN113804866B true CN113804866B (en) | 2024-05-07 |
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| CN114814183B (en) * | 2022-05-27 | 2023-09-12 | 江苏新越沥青产业研发有限公司 | Rapid nondestructive testing device for compactness of asphalt pavement |
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