CN220704270U - Pavement strength testing device - Google Patents
Pavement strength testing device Download PDFInfo
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- CN220704270U CN220704270U CN202322136776.3U CN202322136776U CN220704270U CN 220704270 U CN220704270 U CN 220704270U CN 202322136776 U CN202322136776 U CN 202322136776U CN 220704270 U CN220704270 U CN 220704270U
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- 238000012360 testing method Methods 0.000 title claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 92
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model belongs to the technical field of pavement detection, and particularly discloses a pavement strength testing device which comprises a first detection part, a second detection part and a third detection part, wherein a first cavity and a second cavity are formed in the first detection part, and the second detection part and the third detection part are respectively connected with the first cavity and the second cavity in a sliding manner; the bottom of the second detection part is provided with a test rod; the top of the third detection part is detachably provided with a transmission rod, and the transmission rod is provided with a dial indicator which is used for displaying the test result of the test rod; the first detection portion is close to the one end both sides of third detection portion and all is provided with supporting part. The first cavity and the second cavity are arranged in the first detection part, the second detection part and the third detection part can be respectively contained in the first detection part, the contained length is only less than two meters for the Beckmann beam with the lever ratio of 1:2, the carrying and the transportation are convenient in the containing state, and the assembly procedure is simplified in the detection.
Description
Technical Field
The utility model belongs to the technical field of pavement detection, and particularly relates to a pavement strength testing device.
Background
When the road surface strength test is carried out, the measurement of a plurality of groups of parameters is needed, the roadbed and pavement deflection is one of important technical indexes for evaluating the road engineering quality condition, the road surface deflection measurement is generally carried out by adopting a Beckman beam method in the prior art, the test end of the Beckman beam with the length of 5.4 meters is placed at the rear wheel gap of a load-carrying vehicle with 4 wheels at the two sides of a rear axle, and the vehicle slowly advances and simultaneously reads the representation number of a percentage table, so as to calculate the deflection value, thereby determining the bearing capacity of the road surface.
Because the length of the Beckmann beam is longer, the Beckmann beam is inconvenient to carry when measuring pavement deflection, people use the Beckmann beam as a sectional design in the actual use process, assemble the Beckmann beam when reaching a measuring site, and generally connect a plurality of parts through bolts and nuts. Based on this, chinese patent publication No. CN218893928U discloses a highway deflection measuring device, through rotating the front lever and the back lever and connecting, when conveyer, can rotate the front lever backward lever, when using, also avoided loaded down with trivial details bolted connection, but can clearly see according to the record of this patent, this patent is mainly applicable to lever ratio 1:1, and for the beckmann beam with the lever ratio of 1:2, even if the front lever and the rear lever can be rotated, the rear lever has 3.6 meters, and the problem of difficult transportation still exists during transportation.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a pavement strength testing device.
The utility model provides a pavement strength testing device which comprises a first detection part, a second detection part and a third detection part, wherein a first cavity and a second cavity are formed in the first detection part, and the second detection part and the third detection part are respectively connected with the first cavity and the second cavity in a sliding manner;
a test rod is arranged at the bottom of one end of the second detection part far away from the first detection part;
a transmission rod is detachably arranged at the top of one end, far away from the first detection part, of the third detection part, a dial indicator is arranged on the transmission rod, and the dial indicator is used for displaying the test result of the test rod;
the first detection part, the second detection part and the third detection part form a Beckman beam;
the first detection portion is close to the one end both sides of third detection portion all are provided with supporting part, supporting part with the test lever is common will the back-up of back-up beam.
In a further aspect, the first cavity and the second cavity penetrate through the first detection portion, and are used for completely accommodating the second detection portion and the third detection portion inside the first detection portion.
In a further scheme, a baffle is arranged at one end, close to the first detection part, of the second detection part and the third detection part, and is used for preventing the second detection part and the third detection part from sliding out of the first detection part.
The further scheme is that the bottom of the second detection part is provided with a groove, one end of the test rod is connected with the groove through a rotating shaft, and the rotating angle range of the test rod along the rotating shaft is 0-90 degrees.
The support part comprises a support body, wherein the support body is of a rectangular hollow structure;
the top of the supporting body is provided with a through hole, the through hole is provided with a bearing, a rotating shaft is arranged in the bearing, the rotating shaft is in interference fit connection with the inner ring of the bearing, and the outer ring of the bearing is in interference fit connection with the through hole;
the support body is internally provided with a transmission block, a threaded hole is formed in the center of the transmission block, threads are formed on the rotating shaft in a threading mode, and the bottom of the rotating shaft is screwed into the threaded hole;
the top of the rotating shaft is provided with a handle, and the transmission block slides up and down in the rectangular hollow structure by rotating the handle;
the bottom of the transmission block is provided with a universal wheel set.
The further scheme is that the lateral part of transmission piece is provided with spacing boss, spacing boss with when supporting the bottom butt of body, universal wheelset extends to supporting the body outside.
The further scheme is that the bottom of the supporting body is provided with leveling bases, the leveling bases are four, and the leveling bases are uniformly arranged at four corners of the bottom of the supporting body.
The further scheme is that the first detection part is far away from one end top of the supporting part and is provided with an armrest for pushing the first detection part.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The first detection part is internally provided with the first cavity and the second cavity, the second detection part and the third detection part can be respectively contained in the first detection part, the contained length is only less than two meters for the Beckman beam with the lever ratio of 1:2, the Beckman beam is convenient to carry and transport in a contained state, and the second detection part and the third detection part only need to slide out of the cavity when in use, so that the detection device is convenient to operate, and compared with the traditional detection device fixed through bolts and nuts, the assembly procedure is simplified.
(2) The support part of the utility model adopts a fixed support and sliding movement mode, specifically, when the measurement is needed, the rotating shaft can be driven to rotate by the rotating handle, so that the transmission block drives the universal wheel set to move upwards until the universal wheel set is contracted in the support body, the leveling support is carried out by the leveling base arranged at the bottom of the support body, when the test device needs to be moved, the universal wheel set extends out of the support body and contacts with the ground by rotating the handle in the opposite direction, the movement of the test device can be realized by pulling the handrail, and the labor is saved when the test device is moved manually in a short distance.
Drawings
The following drawings are illustrative of the utility model and are not intended to limit the scope of the utility model, in which:
fig. 1: the structure of the utility model is schematically shown;
fig. 2: another view angle schematic diagram of the present utility model;
fig. 3: the utility model is a schematic diagram of the storage state;
fig. 4: a first detection section cross-sectional view;
fig. 5: schematic diagram of the internal structure of the supporting part;
in the figure: 1. a first detection unit; 2. a second detection unit; 3. a third detection unit; 4. a transmission rod; 5. a support part; 6. a level bar; 7. a test rod; 8. a groove; 9. leveling the base; 10. an armrest; 11. a first cavity; 12. a second cavity; 13. a support body; 14. a bearing; 15. a rotating shaft; 16. a handle; 17. a transmission block; 18. and a universal wheel.
Detailed Description
The present utility model will be further described in detail with reference to the following specific examples, which are given by way of illustration, in order to make the objects, technical solutions, design methods and advantages of the present utility model 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 utility model.
As shown in fig. 1 and 4, the present utility model provides a pavement strength testing device, which includes a first testing portion 1, a second testing portion 2 and a third testing portion 3, wherein a first cavity 11 and a second cavity 12 are formed inside the first testing portion 1, the first cavity 11 and the second cavity 12 penetrate through the first testing portion 1, the length of the first testing portion 1 is slightly longer than that of the second testing portion 2 and the third testing portion 3, in this embodiment, the lengths of the second testing portion 2 and the third testing portion 3 are the same and are slightly greater than 1.8 meters, and the length of the first testing portion 1 is slightly greater than that of the second testing portion 2 and the third testing portion 3, and because a baffle is disposed at one end, close to the first testing portion 1, of the second testing portion 2 and the third testing portion 3, the second testing portion 2 and the third testing portion 3 can be prevented from sliding out of the first testing portion 1; the second detecting portion 2 and the third detecting portion 3 are slidably connected to the first cavity 11 and the second cavity 12, respectively, and the second detecting portion 2 and the third detecting portion 3 can be slid into the first detecting portion 1. For the Beckman beam with the lever ratio of 1:2, the length after storage is only less than two meters, so that the Beckman beam is convenient to carry and transport in a storage state, and when in use, the second detection part 2 and the third detection part 3 only need to slide out of the hollow cavity, so that the Beckman beam is convenient to operate, and compared with the traditional Beckman beam fixed through bolts and nuts, the Beckman beam is simple in assembly procedure.
A test rod 7 is arranged at the bottom of one end of the second detection part 2, which is far away from the first detection part 1; a transmission rod 4 is detachably arranged at the top of one end, far away from the first detection part 1, of the third detection part 3, a dial indicator is arranged on the transmission rod 4, and the dial indicator is used for displaying the test result of the test rod 7; when the third detection unit 3 is stored, the transmission rod 4 needs to be detached, and in this embodiment, the transmission rod 4 and the third detection unit 3 can be screwed together. The first detecting part 1, the second detecting part 2 and the third detecting part 3 form a Beckman beam; the first detection portion 1 is close to the both sides of one end of the third detection portion 3 and is provided with supporting portions 5, and the supporting portions 5 and the test rod 7 jointly prop up the beckmann beam.
As shown in fig. 2, a groove 8 is formed in the bottom of the second detecting portion 2, one end of the test rod 7 is connected with the groove 8 through a rotating shaft, the rotating angle range of the test rod 7 along the rotating shaft is 0-90 °, and when the second detecting portion 2 needs to be stored, the test rod needs to be rotated 90 ° along the rotating shaft, so that the test rod is stored in the groove 8.
In the above, as shown in fig. 1 and 5, the supporting portion 5 includes a supporting body 13, and the supporting body 13 has a rectangular hollow structure; the top of the supporting body 13 is provided with a through hole, the through hole is provided with a bearing 14, a rotating shaft 15 is arranged in the bearing 14, the rotating shaft 15 is in interference fit connection with the inner ring of the bearing 14, and the outer ring of the bearing 14 is in interference fit connection with the through hole; a transmission block 17 is further arranged in the support body 13, a threaded hole is formed in the center of the transmission block 17, threads are formed on the rotating shaft 15 in a threading mode, and the bottom of the rotating shaft 15 is screwed into the threaded hole; a handle 16 is arranged at the top of the rotating shaft 15, and the transmission block 17 slides up and down in the rectangular hollow structure by rotating the handle 16; the bottom of the transmission block 17 is provided with a universal wheel set 18.
In the above, the side portion of the transmission block 17 is provided with a limiting boss, and when the limiting boss abuts against the bottom of the support body 13, the universal wheel set 18 extends to the outside of the support body 13. The first detecting part 1 is provided with an armrest 10 at a top of one end far away from the supporting part 5 for pushing the first detecting part 1. When needs are measured, accessible rotary handle 16 drives pivot 15 and rotates for transmission piece 17 drives universal wheelset 18 upward movement until universal wheelset 18 shrink inside supporting body 13, when needs remove testing arrangement, through the rotatory handle of opposite direction, make universal wheelset stretch out supporting body and with ground contact, can realize testing arrangement's removal through the pulling handrail, more laborsaving when short distance manual movement.
In the embodiment, the level bar 6 is further arranged at the top center position of the first detection part 1, the leveling bases 9 are arranged at the bottom of the supporting body 13, and the leveling bases 9 are four and are uniformly arranged at four corners of the bottom of the supporting body 13. The leveling base 9 is in threaded connection with the supporting body 13, and the whole Beckman beam is in a horizontal state by adjusting the position of the leveling base 9, so that the leveling base is suitable for different roads.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (8)
1. The pavement strength testing device is characterized by comprising a first detection part (1), a second detection part (2) and a third detection part (3), wherein a first cavity (11) and a second cavity (12) are formed in the first detection part (1), and the second detection part (2) and the third detection part (3) are respectively connected with the first cavity (11) and the second cavity (12) in a sliding mode;
a test rod (7) is arranged at the bottom of one end of the second detection part (2) far away from the first detection part (1);
a transmission rod (4) is detachably arranged at the top of one end, far away from the first detection part (1), of the third detection part (3), a dial indicator is arranged on the transmission rod (4), and the dial indicator is used for displaying the test result of the test rod (7);
the first detection part (1), the second detection part (2) and the third detection part (3) form a Beckman beam;
the first detection part (1) is close to one end both sides of the third detection part (3) and all is provided with supporting part (5), supporting part (5) with test rod (7) are together with the back-up of beckmann roof beam.
2. The pavement strength testing apparatus according to claim 1, wherein said first and second cavities (11, 12) each penetrate said first detection portion (1) for completely receiving said second and third detection portions (2, 3) inside said first detection portion (1).
3. A pavement intensity testing apparatus according to claim 2, wherein the second detection portion (2) and the third detection portion (3) are provided with a baffle at one end thereof close to the first detection portion (1) for preventing the second detection portion (2) and the third detection portion (3) from slipping out of the first detection portion (1).
4. The pavement strength testing device according to claim 1, wherein the bottom of the second detecting portion (2) is provided with a groove (8), one end of the testing rod (7) is connected with the groove (8) through a rotating shaft, and the rotation angle range of the testing rod (7) along the rotating shaft is 0-90 °.
5. A pavement strength testing apparatus according to claim 1, wherein said support portion (5) comprises a support body (13), said support body (13) being of rectangular hollow construction;
the top of the supporting body (13) is provided with a through hole, the through hole is provided with a bearing (14), a rotating shaft (15) is arranged in the bearing (14), the rotating shaft (15) is in interference fit connection with the inner ring of the bearing (14), and the outer ring of the bearing (14) is in interference fit connection with the through hole;
a transmission block (17) is further arranged in the support body (13), a threaded hole is formed in the center of the transmission block (17), threading is carried out on the rotating shaft (15), and the bottom of the rotating shaft (15) is screwed into the threaded hole;
a handle (16) is arranged at the top of the rotating shaft (15), and the transmission block (17) slides up and down in the rectangular hollow structure by rotating the handle (16);
the bottom of the transmission block (17) is provided with a universal wheel set (18).
6. The pavement strength testing apparatus according to claim 5, wherein the side portion of the transmission block (17) is provided with a limiting boss, and the universal wheel set (18) extends to the outside of the supporting body (13) when the limiting boss abuts against the bottom of the supporting body (13).
7. The pavement strength testing apparatus according to claim 6, wherein the bottom of the supporting body (13) is provided with leveling bases (9), the leveling bases (9) are provided with four, and are uniformly arranged at four corners of the bottom of the supporting body (13).
8. The pavement intensity testing apparatus according to claim 7, wherein the first detecting portion (1) is provided with a handrail (10) at a top portion of an end thereof remote from the supporting portion (5) for pushing the first detecting portion (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322136776.3U CN220704270U (en) | 2023-08-09 | 2023-08-09 | Pavement strength testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322136776.3U CN220704270U (en) | 2023-08-09 | 2023-08-09 | Pavement strength testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220704270U true CN220704270U (en) | 2024-04-02 |
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ID=90436335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322136776.3U Active CN220704270U (en) | 2023-08-09 | 2023-08-09 | Pavement strength testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220704270U (en) |
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2023
- 2023-08-09 CN CN202322136776.3U patent/CN220704270U/en active Active
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