CN219563623U - Mortar shrinkage test piece forming device - Google Patents
Mortar shrinkage test piece forming device Download PDFInfo
- Publication number
- CN219563623U CN219563623U CN202320613853.7U CN202320613853U CN219563623U CN 219563623 U CN219563623 U CN 219563623U CN 202320613853 U CN202320613853 U CN 202320613853U CN 219563623 U CN219563623 U CN 219563623U
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- China
- Prior art keywords
- test piece
- mortar
- side wall
- shrinkage test
- baffle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The utility model discloses a mortar shrinkage test piece forming device, which comprises a cement mortar test body, wherein the cement mortar test body comprises a fixed bottom plate, a left baffle is arranged on the left side of the top surface of the fixed bottom plate, a right baffle is arranged on the right side of the top surface of the fixed bottom plate, a plurality of separation plates are arranged between the left baffle and the right baffle, a plurality of mold cavities are formed by the left baffle, the right baffle and all the separation plates, insertion holes are formed in the inner side walls of the left baffle and the right baffle corresponding to each mold cavity, a mold connector of a shrinkage head is arranged in the insertion holes, and a screwed rod part of the shrinkage head is positioned in the mold cavity. The screw rod portion that it adopted has can guarantee firm in connection with between the test block, and it only need rotate the shrink head when dismantling moreover, can dismantle screw rod from the test block, and it is convenient to dismantle, moreover, is difficult to damage, long service life.
Description
Technical field:
the utility model relates to the technical field of building material test equipment, in particular to a test piece forming device for testing mortar shrinkage.
The background technology is as follows:
in the performance research of mortar, the shrinkage rate test is an important test item, and in the current shrinkage rate test method, especially in the self-shrinkage and dry shrinkage test, the test is completed by molding a test piece and then matching with a shrinkage tester. The molding device of the test piece consists of a cement mortar test body and a plurality of shrinkage heads.
The cement mortar test die body is generally provided with a die cavity, the plate bodies at the two ends of the die cavity are provided with insertion holes, the connecting parts of the shrinkage heads can be installed in the insertion holes, the metal connecting ends of the shrinkage heads are positioned in the die cavity, then mortar is filled into the die cavity, the metal connecting ends of the shrinkage heads are positioned in the mortar, after maintenance, the die is disassembled, at the moment, the two ends of the formed test block and the shrinkage heads are fixed, the formed test block and the shrinkage heads are put into a shrinkage tester for test, and the metal connecting ends of the existing shrinkage heads are of conical structures with small outer end diameters and large inner end diameters so as to ensure firm connection between the existing shrinkage heads and the formed test block.
The utility model comprises the following steps:
the utility model aims to overcome the defects of the prior art and provide a mortar shrinkage test piece forming device, wherein the adopted shrinkage head is provided with a screwed rod part which can ensure firm connection with a test block, and the screwed rod can be detached from the test block only by rotating the shrinkage head when the device is detached, so that the device is convenient to detach, is not easy to damage and has long service life.
The scheme for solving the technical problems is as follows:
the utility model provides a mortar shrinkage test piece forming device, includes cement mortar test die body, cement mortar test die body includes PMKD, and PMKD's top surface's left side is equipped with left baffle, and PMKD's top surface's right side is equipped with right baffle, is equipped with a plurality of division boards between left baffle and the right baffle, and left baffle, right baffle and all division boards form a plurality of die cavities, all the shaping has the jack on the inside wall of left baffle and right baffle that every die cavity corresponds, and the mould connector of shrink head is installed in the jack, and the spiro union pole portion of shrink head is in the die cavity.
The shrinkage head comprises a die connector and a screw rod part, a middle cylindrical section is formed between the die connector and the screw rod part, an extension part is formed at one end of the middle cylindrical section, the die connector is formed at the outer end of the extension part, and the screw rod part is formed at the other end of the middle cylindrical section.
The die connector is a sphere.
The inner end face of the jack is pressed against with a plastic protection sheet, an elastic sleeve body is clamped on the inner side wall of the jack, an annular limit ring is formed on the inner side wall of the middle of the elastic sleeve body, the middle cylindrical section and the die connector are inserted into the corresponding elastic sleeve body, and the outer side wall of the middle cylindrical section is tightly attached to the inner side wall of the elastic sleeve body.
The annular limiting ring is a conical ferrule part, and the inner side wall of the middle through hole is pressed against the outer side wall of one end, close to the middle cylindrical section, of the die connector.
An isolating layer is arranged on the outer surface of the screw rod part.
The isolating layer is a paraffin layer which is coated on the outer surface of the screw rod part.
The isolating layer is a demolding oil layer, and is coated on the outer surface of the screw rod part.
The isolating layer is a plastic film layer or a paper layer, and is coated on the outer surface of the screw rod part.
The utility model has the outstanding effects that:
the screw rod portion that the shrink head that it adopted has can guarantee firm in connection with between the test block, only need rotate when its dismantlement moreover, can dismantle screw rod from the test block, dismantles conveniently, moreover, is difficult to damage, long service life.
Description of the drawings:
FIG. 1 is a partial top view of the present utility model;
FIG. 2 is a partial side view of the present utility model;
FIG. 3 is an enlarged view of a portion of FIG. 1;
fig. 4 is a simplified schematic illustration of the spacer layer provided on the threaded rod portion of the shrink head of the present utility model.
The specific embodiment is as follows:
1-4, a mortar shrinkage test piece forming device comprises a cement mortar test body 10, wherein the cement mortar test body 10 comprises a fixed bottom plate 11, vertical plate parts 111 extending upwards are formed at the front part and the rear part of the left side wall of the fixed bottom plate 11, side vertical plate parts 112 are formed at the left part and the right part of the front side wall and the rear side wall of the fixed bottom plate 11, the left side wall of a left baffle 12 is pressed against the right side wall of the vertical plate part 111, the front wall and the rear wall of the left baffle 12 are tightly attached to the inner side walls of the corresponding two side vertical plate parts 112 on the left side, the front wall and the rear wall of a right baffle 13 are tightly attached to the inner side walls of the corresponding side vertical plate parts 112 on the right side, the bottom surfaces of the left baffle 12 and the right baffle 13 are pressed against the top surface of the fixed bottom plate 11, four clamping grooves are formed on the opposite wall surfaces of the left baffle 12 and the right baffle 13, four partition plates 14 are positioned between the left baffle plate 12 and the right baffle plate 13, the end parts of the partition plates 14 are inserted into corresponding inner end clamping grooves and clamped between the left baffle plate 12 and the right baffle plate 13, the bottom surface of the partition plates 14 is pressed against the top surface of the fixed bottom plate 10, the left baffle plate 12, the right baffle plate 13 and all the partition plates 14 form three mold cavities 1, the middle part of the right side wall of the fixed bottom plate 10 is formed with a right fixing plate extending upwards, the middle part of the right fixing plate is formed with a transverse screw through hole, an adjusting screw 16 is screw-connected in the transverse screw through hole, the left end of the adjusting screw 16 extends out of the left side wall of the right fixing plate and is pressed against the middle part of the right side wall of the right baffle plate 13, the right end of the adjusting screw 16 extends out of the right side wall of the right fixing plate and is fixed with a rotating handle, the left part of the adjusting screw 16 is screw-connected with a locking nut, the right side wall of the locking nut is pressed against the left side wall of the right fixing plate, a handle is fixed on the outer side wall of the lock nut. The side vertical plate part 112 can limit the left baffle plate 12 and the right baffle plate 13 at the side surface, so that the fixing position is ensured to be accurate and firm.
A plurality of side positioning posts are fixed on the front and rear parts of the top surface of the fixed bottom plate 11, and the outer wall surfaces of the partition plates 14 on the front and rear parts are clung to the corresponding inner end side positioning posts.
The inner side walls of the left baffle plate 12 and the right baffle plate 13 corresponding to each mold cavity 1 are respectively formed with an insertion hole 15, a mold connector 21 of the shrinkage head 20 is arranged in the insertion holes 15, and a screw connection rod 22 of the shrinkage head 20 is positioned in the mold cavity 1.
Further, the shrinkage head 20 includes a mold connector 21 and a screw rod portion 22, a middle cylindrical section 23 is formed between the mold connector 21 and the screw rod portion 22, an extension portion 231 is formed at one end of the middle cylindrical section 23, the mold connector 21 is formed at the outer end of the extension portion 231, and the screw rod portion 22 is formed at the other end of the middle cylindrical section 23.
Further, the mold connector 21 is a sphere.
Further, the inner end surface of the insertion hole 15 is pressed against the plastic protection sheet 16, the inner side wall of the insertion hole 15 is clamped with the elastic sleeve body 17, the middle inner side wall of the elastic sleeve body 17 is formed with the annular limit ring 171, the middle cylindrical section 23 and the die connector 21 are inserted into the corresponding elastic sleeve body 17, the end part of the die connector 21 is pressed against the wall surface of the corresponding plastic protection sheet 16, and the outer side wall of the middle cylindrical section 23 is tightly attached to the inner side wall of the elastic sleeve body 17.
Further, the annular retainer 171 is a tapered collar portion, and the inner side wall of the central through hole is pressed against the outer side wall of the end of the die attachment head 21 near the middle cylindrical section 23.
Further, an isolating layer 2 is provided on the outer surface of the screw rod portion 22.
Further, the isolating layer 2 is a paraffin layer, which is coated on the outer surface of the screw rod portion 22.
Further, the isolating layer 2 is a release oil layer, which is coated on the outer surface of the screw rod portion 22.
Further, the isolating layer 2 is a plastic film layer or a paper layer, which is coated on the outer surface of the screw rod portion 22.
The shrinkage head 20 of the present embodiment is a metal head.
In use, the present embodiment selects an insulation layer 2 to process the threaded rod portion 22 of the shrinkage head 20, wherein the following processing methods may be adopted: coating a paraffin layer as an isolation layer 2, coating a demolding oil layer as the isolation layer 2, wrapping a plastic film layer as the isolation layer 2 or wrapping a paper layer as the isolation layer 2, then inserting the middle cylindrical section 23 and the mold connector 21 into the corresponding elastic sleeve body 17, pressing the end part of the mold connector 21 against the wall surface of the corresponding plastic protection sheet 16, and simultaneously, penetrating the mold connector 21 through the middle through hole of the annular limiting ring 171, so that the inner side wall of the middle through hole is pressed against the outer side wall of one end, close to the middle cylindrical section 23, of the mold connector 21, thereby realizing clamping fixation and preventing the shrinkage head 20 from falling out;
then, the screw rod portion 22 is placed in the corresponding mold cavity 1, a mold release agent is coated on the place where the whole equipment can be contacted with the mortar, the stirred mortar is filled into the three mold cavities 1, the mold is disassembled after curing according to the specified curing conditions, the test block is taken out, when the test block is taken out, the mold connector 21 can be pulled out of the annular limiting ring 171 only by pulling with force, the disassembly is realized, then the shrinkage rate of the test block is tested, after the shrinkage rate test is finished, the shrinkage head 20 can be rotated, the shrinkage head 20 can be screwed out of the test block and can be reused, the shrinkage head 20 is basically free from damage, the test block is not required to be broken, and the operation is convenient.
The utility model can recover the shrinkage head 20 in the mortar test piece more easily without changing the existing mortar shrinkage rate testing means, and does not need the subsequent cleaning and other treatments, thereby saving manpower and time and improving the utilization rate of the shrinkage head.
Claims (9)
1. The utility model provides a mortar shrinkage test piece forming device, includes cement mortar examination mould body (10), its characterized in that: cement mortar test body (10) are including PMKD (11), the left side of the top surface of PMKD (11) is equipped with left baffle (12), the right side of the top surface of PMKD (11) is equipped with right baffle (13), be equipped with a plurality of division boards (14) between left baffle (12) and right baffle (13), left baffle (12), right baffle (13) and all division boards (14) form a plurality of die cavities (1), all the shaping has jack (15) on the inside wall of left baffle (12) and right baffle (13) that every die cavity (1) corresponds, mould connector (21) of shrink head (20) are installed in jack (15), spiro union pole portion (22) of shrink head (20) are in die cavity (1).
2. The mortar shrinkage test piece molding device according to claim 1, wherein: the shrinkage head (20) comprises a die connector (21) and a screw connection rod portion (22), a middle cylindrical section (23) is formed between the die connector (21) and the screw connection rod portion (22), an extension portion (231) is formed at one end of the middle cylindrical section (23), the die connector (21) is formed at the outer end of the extension portion (231), and the screw connection rod portion (22) is formed at the other end of the middle cylindrical section (23).
3. The mortar shrinkage test piece molding device according to claim 2, wherein: the die connector (21) is a sphere.
4. The mortar shrinkage test piece molding device according to claim 1, wherein: the inner end face of the jack (15) is pressed against a plastic protection sheet (16), an elastic sleeve body (17) is clamped on the inner side wall of the jack (15), an annular limit ring (171) is formed on the inner side wall of the middle of the elastic sleeve body (17), the middle cylindrical section (23) and the die connector (21) are inserted into the corresponding elastic sleeve body (17), and the outer side wall of the middle cylindrical section (23) is tightly attached to the inner side wall of the elastic sleeve body (17).
5. The mortar shrinkage test piece molding device according to claim 4, wherein: the annular limiting ring (171) is a conical ferrule part, and the inner side wall of the middle through hole is pressed against the outer side wall of one end, close to the middle cylindrical section (23), of the die connector (21).
6. The mortar shrinkage test piece molding device according to claim 1, wherein: an isolating layer (2) is arranged on the outer surface of the screw rod part (22).
7. The mortar shrinkage test piece molding device according to claim 6, wherein: the isolating layer (2) is a paraffin layer which is coated on the outer surface of the screw rod part (22).
8. The mortar shrinkage test piece molding device according to claim 6, wherein: the isolating layer (2) is a demolding oil layer, and is coated on the outer surface of the screw rod part (22).
9. The mortar shrinkage test piece molding device according to claim 6, wherein: the isolating layer (2) is a plastic film layer or a paper layer, and is coated on the outer surface of the screw rod part (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320613853.7U CN219563623U (en) | 2023-03-27 | 2023-03-27 | Mortar shrinkage test piece forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320613853.7U CN219563623U (en) | 2023-03-27 | 2023-03-27 | Mortar shrinkage test piece forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219563623U true CN219563623U (en) | 2023-08-22 |
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ID=87662497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320613853.7U Active CN219563623U (en) | 2023-03-27 | 2023-03-27 | Mortar shrinkage test piece forming device |
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| CN (1) | CN219563623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118163228A (en) * | 2024-05-14 | 2024-06-11 | 西南交通大学 | Vertical fixing device and method for pin connecting piece |
-
2023
- 2023-03-27 CN CN202320613853.7U patent/CN219563623U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118163228A (en) * | 2024-05-14 | 2024-06-11 | 西南交通大学 | Vertical fixing device and method for pin connecting piece |
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