CN217670011U - Concrete air permeability coefficient measurement test piece mould - Google Patents
Concrete air permeability coefficient measurement test piece mould Download PDFInfo
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- CN217670011U CN217670011U CN202221665958.9U CN202221665958U CN217670011U CN 217670011 U CN217670011 U CN 217670011U CN 202221665958 U CN202221665958 U CN 202221665958U CN 217670011 U CN217670011 U CN 217670011U
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- die sleeve
- test piece
- sleeve
- air permeability
- end plate
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Abstract
The utility model provides a concrete air permeability coefficient survey test piece mould, including last die sleeve, lower die sleeve, support and a pair of end plate, go up die sleeve, lower die sleeve and support top-down and arrange in proper order, lower die sleeve links firmly with the support, go up die sleeve, lower die sleeve still respectively with the end plate links firmly, and go up die sleeve, lower die sleeve and end plate around forming confined die cavity. Adopt the technical scheme of the utility model, compare prior art, will go up the die sleeve, lower die sleeve and shelve in proper order with support top-down, make each fastener arrange in the die cavity left and right sides, when needs pack the test piece into the die cavity or take out from the die cavity, then need not make the test piece mould lift up unsettledly to the operator of being convenient for screws up or the operation of unscrewing each fastener.
Description
Technical Field
The utility model belongs to the technical field of the building materials test, especially, relate to a concrete air permeability coefficient survey test piece mould.
Background
When the air permeability coefficient of concrete is measured, firstly, a corresponding concrete test piece needs to be prepared, then, the test piece is clamped in a corresponding closed die cavity in a special test piece die, and then, compressed air is sent into the closed die cavity, so that the corresponding air permeability coefficient of concrete is obtained by measuring the gas parameter of the air outlet end, for example, the open number is as follows: the patent document of "CN206300876U" discloses a concrete permeability coefficient testing device, which comprises a testing cavity, a gas measuring device and a pressure reducing valve, wherein one end of the testing cavity is connected with the gas measuring device, and the other end of the testing cavity is connected with the pressure reducing valve; the test cavity is a cone, one end with a small diameter is connected with the gas measuring device, and the other end with a large diameter is connected with the pressure reducing valve. This patent technical scheme lets in test chamber with test gas through the relief pressure valve, and the steerable pressure that lets in test intracavity gas of relief pressure valve can conveniently test the coefficient of permeability under the different pressures, and during the gas of infiltration lets in the U type pipe, the audio-visual test result of reading in the accessible U type pipe. However, the existing test piece mold generally comprises a cover plate, a mold sleeve and a bottom plate, the cover plate, the mold sleeve and the bottom plate are sequentially arranged from top to bottom, the cover plate is connected with the bottom plate through fasteners such as screws and nuts, so that the mold sleeve is clamped between the cover plate and the bottom plate, the mold sleeve is in a cylindrical shape, the inner space of the mold sleeve is a mold cavity, each part in the existing test piece mold is generally made of steel, the test piece mold is very heavy, the test piece mold is moved and placed on a concrete air permeability coefficient tester, large physical power is consumed, the labor intensity is high, when the test piece is loaded into the mold cavity or taken out of the mold cavity, the test piece mold needs to be lifted and suspended, after the corresponding fastener nuts are screwed or unscrewed, the test piece can be loaded into the mold cavity or taken out of the mold cavity, the operation process is complicated, and the labor intensity is very high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a concrete air permeability coefficient survey test piece mould.
The utility model discloses a following technical scheme can realize.
The utility model provides a concrete air permeability coefficient survey test piece mould, including last die sleeve, lower die sleeve, support and a pair of end plate, go up die sleeve, lower die sleeve and support top-down and arrange in proper order, lower die sleeve links firmly with the support, go up die sleeve, lower die sleeve still respectively with the end plate links firmly, and go up die sleeve, lower die sleeve and end plate around forming confined die cavity.
The inner wall of the die cavity is also attached with a sealing gasket, and the tail end of the sealing gasket extends out of the die cavity and is clamped and plugged between the upper die sleeve and the end plate so as to be clamped and plugged between the lower die sleeve and the end plate.
And the end plate is also provided with a vent hole which enables the interior of the die cavity to be communicated with the external environment.
The number of the vent holes is two, and the two vent holes are respectively arranged on the left side and the right side of the die cavity.
And an air pipe joint is also arranged at the air vent.
The die cavity is in a cylindrical shape or a truncated cone shape.
The support is integrally U-shaped.
The lower die sleeve and the support are integrally manufactured and formed.
The concrete permeability coefficient measurement test piece mold further comprises a connecting screw rod and a locking nut, the connecting screw rod is inserted into the upper mold sleeve and the lower mold sleeve, the connecting screw rod is further in threaded connection with the locking nut, the end plate is clamped between the locking nut and the upper mold sleeve, and the end plate is clamped between the locking nut and the lower mold sleeve.
The projection of the axial section of the connecting screw rod is U-shaped by the upper die sleeve and the lower die sleeve.
The beneficial effects of the utility model reside in that: adopt the technical scheme of the utility model, compare prior art, will go up the die sleeve, lower die sleeve and shelve in proper order with support top-down, make each fastener arrange in the die cavity left and right sides, when needs pack the test piece into the die cavity or take out from the die cavity, then need not make the test piece mould lift up unsettledly to the operator of being convenient for screws up or the operation of unscrewing each fastener.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a left side view of the present invention;
fig. 3 is a cross-sectional view of the present invention.
In the figure: 1-upper die sleeve, 2-lower die sleeve, 3-support, 4-end plate, 5-die cavity, 6-sealing gasket, 7-vent hole, 8-air pipe joint, 9-connecting screw rod, 10-locking nut and 11-test piece.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, fig. 2 and fig. 3, the utility model provides a concrete air permeability coefficient survey test piece mould, including last die sleeve 1, lower die sleeve 2, support 3 and a pair of end plate 4, go up die sleeve 1, lower die sleeve 2 and 3 top-down of support and arrange in proper order, lower die sleeve 2 links firmly with support 3, goes up die sleeve 1, lower die sleeve 2 and still links firmly with end plate 4 respectively to it centers on forming confined die cavity 5 to go up die sleeve 1, lower die sleeve 2 and end plate 4. Adopt the technical scheme of the utility model, compare prior art, will go up the die sleeve, lower die sleeve and support top-down shelves in proper order, makes each fastener arrange in the die cavity left and right sides, when needs pack the test piece into the die cavity or take out from the die cavity, then need not make the test piece mould lift up unsettledly to the operation of being convenient for the operator to screw up or unscrew each fastener.
Furthermore, a sealing gasket 6 is attached to the inner wall of the mold cavity 5, and the tail end of the sealing gasket 6 extends out of the mold cavity 5 and is clamped between the upper mold sleeve 1 and the end plate 4 and between the lower mold sleeve 2 and the end plate 4. The material of the gasket 6 is preferably rubber. Adopt the technical scheme of the utility model, seal 5 border each joints of die cavity through sealed 6 that fill up to when surveying concrete air permeability coefficient, avoid sending into the air of die cavity and leak from 5 border joints of die cavity, thereby guaranteed the accuracy and the reliability of the acquisition data result of measuring.
In addition, the end plate 4 is provided with a vent hole 7, and the vent hole 7 enables the interior of the mold cavity 5 to be communicated with the external environment. Preferably, the number of the vent holes 7 is two, and the two vent holes 7 are respectively arranged on the left side and the right side of the mold cavity 5. And a gas pipe joint 8 is also arranged at the vent hole 7. One of the two vent holes 7 serves as an air inlet, the other serves as an air outlet,
further, the cavity 5 has a cylindrical shape or a truncated cone shape. The upper die sleeve 1, the lower die sleeve 2 and the end plate 4 are made of acrylic. Therefore, the whole weight of the test piece mould is reduced, and the test piece mould is more convenient to move and place on a concrete permeability coefficient tester for testing. The support 3 is U-shaped as a whole. The lower die sleeve 2 and the support 3 are integrally manufactured.
In addition, the concrete air permeability coefficient measurement test piece mold further comprises a connecting screw rod 9 and a locking nut 10, the connecting screw rod 9 is inserted into the upper mold sleeve 1 and the lower mold sleeve 2, the connecting screw rod 9 is further in threaded connection with the locking nut 10, the end plate 4 is clamped between the locking nut 10 and the upper mold sleeve 1, and the end plate 4 is clamped between the locking nut 10 and the lower mold sleeve 2. Preferably, the projections of the upper die sleeve 1 and the lower die sleeve 2 on the axial section of the connecting screw rod 9 are U-shaped. The number of the connecting screw rods 9 is not less than 6, and the outer diameter of the connecting screw rods 9 is not less than 10mm.
Claims (10)
1. The utility model provides a concrete air permeability coefficient survey test piece mould which characterized in that: including last die sleeve (1), lower die sleeve (2), support (3) and a pair of end plate (4), go up die sleeve (1), lower die sleeve (2) and support (3) top-down and arrange in proper order, lower die sleeve (2) links firmly with support (3), go up die sleeve (1), lower die sleeve (2) still respectively with end plate (4) link firmly, and go up die sleeve (1), lower die sleeve (2) and end plate (4) around forming confined die cavity (5).
2. The concrete air permeability test piece mold according to claim 1, wherein: and a sealing gasket (6) is further attached to the inner wall of the mold cavity (5), and the tail end of the sealing gasket (6) extends out of the mold cavity (5) and is clamped and plugged between the upper mold sleeve (1) and the end plate (4) and between the lower mold sleeve (2) and the end plate (4).
3. The concrete air permeability test piece mold according to claim 1 or 2, wherein: and the end plate (4) is also provided with a vent hole (7), and the vent hole (7) enables the interior of the die cavity (5) to be communicated with the external environment.
4. The concrete air permeability test piece mold according to claim 3, wherein: the number of the vent holes (7) is two, and the two vent holes (7) are respectively arranged on the left side and the right side of the die cavity (5).
5. The concrete air permeability test piece mold according to claim 3, wherein: and a gas pipe joint (8) is also arranged at the vent hole (7).
6. The concrete air permeability test piece mold according to any one of claims 1 to 4, wherein: the die cavity (5) is in a cylindrical shape or a circular truncated cone shape.
7. The concrete air permeability test piece mold according to claim 1, wherein: the support (3) is integrally U-shaped.
8. The concrete air permeability test piece mold according to claim 1, wherein: the lower die sleeve (2) and the support (3) are integrally manufactured and formed.
9. The concrete air permeability test piece mold according to claim 1, wherein: the concrete air permeability coefficient measurement test piece mold further comprises a connecting screw rod (9) and a locking nut (10), the connecting screw rod (9) is inserted into the upper mold sleeve (1) and the lower mold sleeve (2), the connecting screw rod (9) is further in threaded connection with the locking nut (10), and the end plate (4) is clamped between the locking nut (10) and the upper mold sleeve (1) and is clamped between the locking nut (10) and the lower mold sleeve (2).
10. The concrete air permeability test piece mold according to claim 9, wherein: the projections of the upper die sleeve (1) and the lower die sleeve (2) on the axial section of the connecting screw rod (9) are U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221665958.9U CN217670011U (en) | 2022-06-30 | 2022-06-30 | Concrete air permeability coefficient measurement test piece mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221665958.9U CN217670011U (en) | 2022-06-30 | 2022-06-30 | Concrete air permeability coefficient measurement test piece mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217670011U true CN217670011U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221665958.9U Active CN217670011U (en) | 2022-06-30 | 2022-06-30 | Concrete air permeability coefficient measurement test piece mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217670011U (en) |
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2022
- 2022-06-30 CN CN202221665958.9U patent/CN217670011U/en active Active
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