CN214844482U - Woodwork character beam testing device with eight-point uniform distribution loading - Google Patents
Woodwork character beam testing device with eight-point uniform distribution loading Download PDFInfo
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- CN214844482U CN214844482U CN202121597559.9U CN202121597559U CN214844482U CN 214844482 U CN214844482 U CN 214844482U CN 202121597559 U CN202121597559 U CN 202121597559U CN 214844482 U CN214844482 U CN 214844482U
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- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 238000009827 uniform distribution Methods 0.000 title description 4
- 238000005452 bending Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000002023 wood Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a loaded carpenter word roof beam test device of eight some equipartitions, it belongs to panel processing field. The device mainly comprises a base, a supporting seat is arranged on the base, a pressurizing device is arranged above the base through a support and comprises a power mechanism, an upper beam, a middle beam and a lower beam, the power mechanism is connected with the upper beam, the upper beam is hinged with the middle beam through a rotating shaft device, the middle beam is hinged with the lower beam through a rotating shaft device, and a loading roller is arranged on the lower beam. The utility model discloses an add pivot device for carpenter's word roof beam can avoid the uneven problem of atress that leads to because of the roof beam body warp in the testing process, thereby realizes the accurate measurement of roof beam body bending resistance bearing moment and pressure-bearing capacity. The utility model discloses mainly used carpenter's word roof beam is experimental.
Description
Technical Field
The utility model belongs to the panel processing field, specifically speaking especially relates to an eight loaded carpenter word roof beam test devices of point equipartition.
Background
The wooden I-beam is used as a building component for replacing a solid wood beam, has the specific advantages of unlimited length, light weight, high strength-to-weight ratio and the like, and is a modern wooden building material with high-efficiency resource utilization. The wood structural I-beam needs to support a large load on a large span and is not easy to bend and sink, so that the bending resistance bearing moment and the bearing capacity of the wood structural I-beam need to be accurately measured to ensure the quality of the wood I-beam. According to national standard GB 31265-2014 Carpenter beam for concrete formworks, the bending resistance bearing moment and the pressure bearing capacity of the Carpenter beam are measured by eight-point uniform loading, and the loading positions are respectively shown in FIG. 1 (bending resistance bearing moment test) and FIG. 2 (pressure bearing capacity test).
At present, in the use process of a traditional clamp, because the central span of a bending-resistant bearing moment cushion block is 15 times of the nominal height of a sample, the central span of a bearing force cushion block is 7.5 times of the nominal height of the sample, and the bottom of the middle part of a test piece is not supported, the middle part of the test piece is easy to bend and deform first and a middle loading roller cannot contact the test piece in the loading process of the test piece, so that the eight-point uniform loading cannot be continued finally, and the detection result of a woodwork character beam is inaccurate.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the woodwork I-beam testing device with eight-point uniform distribution loading is provided, and the woodwork I-beam testing device is provided with the rotating shaft device, so that the problem of uneven stress caused by deformation of a beam body can be avoided in the detection process, and the accurate measurement of the bending resistance bearing moment and the bearing capacity of the beam body is realized.
The eight-point uniform distribution loading woodwork character beam test device comprises a base, wherein a supporting seat is arranged on the base, a pressurizing device is arranged above the base through a support, the pressurizing device comprises a power mechanism, an upper beam, a middle beam and a lower beam, the power mechanism is connected with the upper beam, the upper beam is hinged with the middle beam through a rotating shaft device, the middle beam is hinged with the lower beam through a rotating shaft device, and a loading roller is arranged on the lower beam.
Preferably, the rotating shaft device comprises a rotating shaft fixing seat and a rotating shaft connecting seat, the rotating shaft connecting seat is rotatably connected with the rotating shaft fixing seat through a pin shaft, a clamping groove is formed in the rotating shaft connecting seat, and a fastening bolt matched with the clamping groove is arranged at the top of the rotating shaft connecting seat.
Preferably, two middle beams are arranged below the upper beam, the two middle beams are respectively hinged with the upper beam through a rotating shaft device, two lower beams are respectively arranged below each middle beam, the four lower beams are respectively hinged with the middle beams through rotating shaft devices, loading rollers are respectively arranged below each lower beam, and the eight loading rollers are uniformly distributed.
Preferably, the supporting seat comprises a fixed seat, the fixed seat is fixedly connected with the base, and a swinging seat is hinged to the fixed seat through a shaft.
Preferably, the guide mechanism further comprises a guide post and a guide plate, the bottom of the guide post is fixedly connected with the base, the upper end of the guide post is fixedly connected with a support, the power mechanism is installed in the support, the guide post is provided with the guide plate capable of sliding up and down, the guide plate is fixedly connected with the upper beam, and the output end of the power mechanism is matched with the guide plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the pressure device of the utility model adds the swinging rotating shaft device between the upper beam and the middle beam and between the middle beam and the lower beam, so that the middle beam and the lower beam can swing synchronously along with the deformation of the wood character beam in the pressure process, and the loading roller is always in contact with the wood character beam and can continuously pressurize, thereby ensuring that eight loading rollers can be evenly loaded;
2. the rotating shaft device is simple in structure, convenient to use, low in production cost and high in reliability, and greatly improves the testing precision of the woodwork H-beam.
Drawings
FIG. 1 is a schematic view of a bending moment test of a carpentry beam;
FIG. 2 is a schematic view of a bearing capacity test of a carpentry I-beam;
FIG. 3 is a schematic structural view of the present invention;
fig. 4 is a schematic structural view of the spindle device.
In the figure, 1, a base; 2. a fixed seat; 3. a swing seat; 4. a woodwork character beam; 5. a base plate; 6. a loading roller; 7. a lower beam; 8. a rotating shaft fixing seat; 9. a rotating shaft connecting seat; 10. a center sill; 11. an upper beam; 12. a guide post; 13. a support; 14. a guide plate; 15. a power mechanism; 16. a card slot; 17. fastening a bolt; 18. and a rotating shaft cover.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and embodiments:
the first embodiment is as follows: the woodwork I-beam testing device with eight-point uniform loading comprises a base 1, wherein a supporting seat is arranged on the base 1, the supporting seat comprises a fixed seat 2, the fixed seat 2 is fixedly connected with the base 1 through a fastener, the fixed seat 2 can also be directly welded on the base 1, a swinging seat 3 is hinged on the fixed seat 2 through a shaft, and the swinging seat 3 is used for placing a woodwork I-beam 4 to be tested; a pressurizing device is arranged above the base 1 through a support 13 and comprises a power mechanism 15, an upper beam 11, a middle beam 10 and a lower beam 7, the power mechanism 15 is installed on the support 13, a power output shaft of the power mechanism 15 is connected with the upper beam 11, the upper beam 11 is hinged with the middle beam 10 through a rotating shaft device, the middle beam 10 is hinged with the lower beam 7 through the rotating shaft device, and a loading roller 6 is arranged on the lower beam 7.
As shown in fig. 4, the rotating shaft device includes a rotating shaft fixing seat 8 and a rotating shaft connecting seat 9, the rotating shaft connecting seat 9 is rotatably connected with the rotating shaft fixing seat 8 through a pin shaft, a rotating shaft cover 18 is arranged at both ends of the pin shaft, a clamping groove 16 is arranged on the rotating shaft connecting seat 9, and a fastening bolt 17 matched with the clamping groove is arranged at the top of the rotating shaft connecting seat 9. During installation, in the rotating shaft device between the upper beam 11 and the middle beam 10, the rotating shaft fixing seat 8 is fixedly connected with the top of the middle beam 10, and the bottom of the upper beam 11 is screwed and fixed through the clamping groove 16 and the fastening bolt 17; in the rotating shaft device between the middle beam 10 and the lower beam 7, the rotating shaft fixing seat 8 is fixedly connected with the top of the lower beam 7, and the bottom of the middle beam 10 is screwed and fixed through the clamping groove 16 and the fastening bolt 17.
Example two: as shown in fig. 3, two middle beams 10 are arranged below the upper beam 11, the two middle beams 10 are respectively hinged with the upper beam 11 through a rotating shaft device, two lower beams 7 are respectively arranged below each middle beam 10, the four lower beams 7 are respectively hinged with the middle beams 10 through rotating shaft devices, loading rollers 6 are respectively arranged below each lower beam 7, and the eight loading rollers 6 are uniformly distributed; a guide mechanism is further arranged between the power mechanism 15 and the upper beam 11, the guide mechanism comprises a guide post 12 and a guide plate 14, the bottom of the guide post 12 is fixedly connected with the base 1, the upper end of the guide post 12 is fixedly connected with a support 13, the power mechanism 15 is installed in the support 13, the guide post 12 is provided with the guide plate 14 capable of sliding up and down, the guide plate 14 is fixedly connected with the upper beam 11, and the output end of the power mechanism 15 is matched with the guide plate 14; the rest is the same as the first embodiment.
The utility model discloses when the preparation, the supporting seat is two, and power unit 15 adopts the pressurization motor. When in use, the woodwork I-beam 4 to be tested is placed on the supporting seat, in order to prevent the loading roller 6 from damaging the woodwork I-beam 4, a wooden base plate 5 is arranged between the loading roller 6 and the woodwork I-beam 4, two ends of the woodwork I-beam 4 to be tested are supported by the swinging seat 3 on the supporting seat, the power mechanism 15 is started, the output end of the power mechanism 15 drives the guide plate 14 and the upper beam 11 to press downwards for loading, the middle beam 10 sinks and deforms gradually under the increase of the load, at the moment, through the pin shaft on the rotating shaft device, the middle beam 10 starts to drive the rotating shaft fixing seat 8 to rotate, so that the position of the middle beam 10 close to the middle part of the woodwork character beam 4 becomes lower, the position far away from the middle part of the woodwork character beam 4 becomes higher, meanwhile, the rotating shaft device on the lower beam 7 also rotates, so that the loading roller 6 is loaded on the woodwork beam 4 all the time until the woodwork beam 4 is damaged, and the accurate measurement of the bending resistance bearing moment and the bearing capacity of the woodwork beam is completed.
Claims (5)
1. The utility model provides an eight loaded carpenter word roof beam test device of some equipartitions, includes base (1), is equipped with supporting seat, its characterized in that on base (1): the device is characterized in that a pressurizing device is arranged above the base (1) through a support (13), the pressurizing device comprises a power mechanism (15), an upper beam (11), a middle beam (10) and a lower beam (7), the power mechanism (15) is connected with the upper beam (11), the upper beam (11) is hinged with the middle beam (10) through a rotating shaft device, the middle beam (10) is hinged with the lower beam (7) through a rotating shaft device, and a loading roller (6) is arranged on the lower beam (7).
2. The eight-point equipartition loaded woodwork I-beam test device of claim 1, characterized in that: the rotating shaft device comprises a rotating shaft fixing seat (8) and a rotating shaft connecting seat (9), the rotating shaft connecting seat (9) is rotatably connected with the rotating shaft fixing seat (8) through a pin shaft, a clamping groove (16) is formed in the rotating shaft connecting seat (9), and a fastening bolt (17) matched with the clamping groove is arranged at the top of the rotating shaft connecting seat (9).
3. The eight-point equipartition loaded woodwork I-beam test device of claim 1 or 2, characterized in that: two middle beams (10) are arranged below the upper beam (11), the two middle beams (10) are respectively hinged with the upper beam (11) through a rotating shaft device, two lower beams (7) are respectively arranged below each middle beam (10), the four lower beams (7) are respectively hinged with the middle beams (10) through rotating shaft devices, loading rollers (6) are respectively arranged below each lower beam (7), and the eight loading rollers (6) are uniformly distributed.
4. The eight-point equipartition loaded carpenter's character beam test device of claim 3, characterized in that: the supporting seat comprises a fixing seat (2), the fixing seat (2) is fixedly connected with the base (1), and the fixing seat (2) is hinged with a swing seat (3) through a shaft.
5. The eight-point equipartition loaded carpenter's character beam test device of claim 4, characterized in that: still include guiding mechanism, guiding mechanism includes guide post (12) and deflector (14), guide post (12) bottom and base (1) fixed connection, guide post (12) upper end fixedly connected with support (13), power unit (15) are installed in support (13), be equipped with gliding deflector (14) from top to bottom on guide post (12), deflector (14) and upper beam (11) fixed connection, the output and the deflector (14) cooperation of power unit (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121597559.9U CN214844482U (en) | 2021-07-14 | 2021-07-14 | Woodwork character beam testing device with eight-point uniform distribution loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121597559.9U CN214844482U (en) | 2021-07-14 | 2021-07-14 | Woodwork character beam testing device with eight-point uniform distribution loading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214844482U true CN214844482U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121597559.9U Active CN214844482U (en) | 2021-07-14 | 2021-07-14 | Woodwork character beam testing device with eight-point uniform distribution loading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214844482U (en) |
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2021
- 2021-07-14 CN CN202121597559.9U patent/CN214844482U/en active Active
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