Test mold assembly for Marshall compaction test apparatus

Abstract

The utility model discloses a test mold assembly for a Marshall compaction test apparatus. The test mold assembly comprises a hard pier, a bottom plate; the bottom plate is assembled on the hard pier; a test mold barrel; the test mold barrel can be assembled at the top of the bottom plate; a fixing unit; and the fixing unit is used for fixedly assembling the test mold barrel on the bottom plate. The utility model has the beneficial effects that the technical scheme is simple and easy to assemble, the stability is high, the displacement of the test mold barrel in a long-time compaction test does not deviate, and meanwhile, the resonance phenomenon and abnormal sound do not occur.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt mixture testing, in particular to a test mold component for a Marshall compactor. Background Art

[0002] The Marshall Compactor is a specialized instrument for forming specimens in the Marshall stability test of asphalt mixtures. Its structure and performance fully comply with highway test regulations. The instrument is compact, easy to operate, and reliable, with features such as automatic operation, automatic compaction, and automatic shutdown, and the ability to pause operations during operation.

[0003] In the existing equipment technology, in order to ensure the stability of the test mold and prevent position displacement during the daily and monthly hitting, its fixed assembly is relatively complicated, which makes assembly difficult. Therefore, it is necessary to develop a test mold assembly for the Marshall compactor. After searching, no technical solution identical to the present invention was found. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a test mold component for a Marshall compactor, which solves one or more of the above-mentioned problems in the prior art.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: a test mold assembly for a Marshall compaction instrument, the innovation of which is: comprising

[0006] Hard pier;

[0007] Base plate; the base plate is assembled on the hard pier;

[0008] Trial mold bucket; the trial mold bucket can be assembled on the top of the bottom plate;

[0009] Fixing unit: The fixing unit is used to fix the trial mold barrel on the base plate.

[0010] In some embodiments, a limiting groove is provided on the top of the bottom plate for the lower edge of the trial mold barrel to be embedded.

[0011] In some embodiments, the fixing unit includes a fixing ring, and the side wall edge of the fixing ring is further provided with at least two fixing wings, the fixing wings are perpendicular to the surface of the fixing ring and extend downward, the length of the fixing wings is the same as the height of the trial mold barrel, and the bottom of the fixing wing is further provided with a fixing ear, the fixing ear is horizontally arranged, and a first locking hole is provided on the fixing ear.

[0012] In some embodiments, a locking groove is located on the bottom plate for the fixing ear to be embedded in, and a second locking hole is provided in the locking groove. When the fixing ear is assembled, the second locking hole is coaxially arranged with the first locking hole.

[0013] In some embodiments, a first slot is provided on the bottom surface of the fixing ring, and the first slot is concentrically arranged with the fixing ring; the fixing unit also includes a shock-absorbing pad, and the shock-absorbing pad includes an inserting portion embedded in the first slot and a pad portion located between the bottom surface of the fixing ring and the top upper edge of the trial mold barrel during assembly.

[0014] In some embodiments, a second slot is provided on the inner side wall of the fixed wing, and the second slot extends from the top of the fixed wing to the bottom of the fixed wing. The fixing unit also includes a compensation pad, the back of the compensation pad is embedded in the second slot, and the front of the compensation pad is in an arc shape convex outward, and the front of the compensation pad exposes the opening of the first slot.

[0015] The beneficial effects of the utility model are as follows: the technical solution is easy to assemble and easy to use, has high stability, and the displacement of the test mold barrel will not be offset during a long-term compaction test, and no resonance phenomenon or abnormal noise will occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 The utility model is a structural schematic diagram of a test mold component used for a Marshall compaction instrument.

[0018] Figure 2 The utility model is an axial view of a bottom plate of a test mold assembly for a Marshall compactor.

[0019] Figure 3 The utility model is a top view of a bottom plate of a test mold assembly for a Marshall compactor.

[0020] Figure 4 The utility model is a structural schematic diagram of a fixing unit of a test mold assembly used for a Marshall compaction instrument.

[0021] Figure 5 yes Figure 4 Cross-section view in the AA direction.

[0022] Figure 6 The utility model is a top view of a fixing unit of a test mold assembly for a Marshall compactor.

[0023] Figure 7 The utility model is an axial view of a fixing unit of a test mold assembly for a Marshall compactor.

[0024] Figure 8 The utility model is a structural schematic diagram of a shock-absorbing pad of a test mold assembly used for a Marshall compactor.

[0025] Figure 9 The utility model is a structural schematic diagram of a compensation pad of a test die assembly used for a Marshall compactor. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figures 1 to 9 As shown, the embodiment of the utility model includes:

[0028] A test mold assembly for a Marshall compaction instrument, comprising

[0029] Hard pier 100;

[0030] The bottom plate 200 is assembled on the hard pier 100;

[0031] The trial mold barrel 300 can be assembled on the top of the bottom plate 200;

[0032] Fixing unit 400: This fixing unit 400 is used to fix the trial mold barrel 300 to the bottom plate 200. In this embodiment, the top of the bottom plate 200 is provided with a limiting groove 201 for the bottom edge of the trial mold barrel 300 to be embedded. This technical solution is used to limit the bottom of the trial mold barrel 300 to prevent positional deviation during the compaction process. In this technical solution, the limiting groove 201 has a depth of 1-2mm and is only used to limit the position of the bottom of the trial mold barrel 300, while also facilitating positioning.

[0033] In this embodiment, the fixing unit 400 includes a fixing ring 401, and the side wall edge of the fixing ring 401 is also provided with at least two fixing wings 402, the fixing wings 402 are perpendicular to the surface of the fixing ring 401 and extend downward, the length of the fixing wings 402 is the same as the height of the test mold barrel 300, and the bottom of the fixing wings 402 is also provided with a fixing ear 403, the fixing ear 403 is horizontally arranged, and the fixing ear 403 is provided with a first locking hole 404. In this technical solution, the fixing ring 401 is used to press the upper edge of the test mold barrel 300 and stabilize its position, and the fixing wings 402 limit and slightly squeeze the side wall of the test mold barrel 300, so that the test mold barrel 300 is not easily deformed, and the fixing ears 403 are used to lock the position, so that the position of the test mold barrel 300 and the fixing unit 400 are locked after assembly to prevent displacement.

[0034] In this embodiment, a locking groove 202 is located on the base plate 200 for the fixing ear 403 to be embedded in, and a second locking hole 203 is provided in the locking groove 202. When the fixing ear 403 is assembled, the second locking hole 203 is coaxially arranged with the first locking hole 404; in this technical solution, the coordinated locking of the locking groove 202 and the fixing ear 403 can make the overall structure more stable.

[0035] In this embodiment, a first slot 4011 is provided on the bottom surface of the fixing ring 401, and the first slot 4011 is concentrically arranged with the fixing ring 401; the fixing unit 400 also includes a shock-absorbing pad, and the shock-absorbing pad includes an inserting portion 510 embedded in the first slot 4011 and a pad portion 520 located between the bottom surface of the fixing ring 401 and the top upper edge of the test mold barrel 300 during assembly. In this technical solution, the shock-absorbing pad is made of a harder material, which not only ensures the friction coefficient between it and the test mold barrel 300 so that the positions of the two are not offset, but also avoids the vibration phenomenon caused by the material being too soft and too elastic, reduces vibration and thus reduces the frequency of abnormal noise.

[0036] In this embodiment, a second slot 4021 is further provided on the inner wall of the fixed wing 402, and the second slot 4021 extends from the top of the fixed wing 402 to the bottom of the fixed wing 402. The fixed unit 400 also includes a compensation pad 600, and the back of the compensation pad 600 is embedded in the second slot 4021. The front of the compensation pad 600 is in an arc shape convex outward, and the front of the compensation pad 600 exposes the opening of the first slot 4011. The compensation point in this technical solution is used to compensate for the pressure of the fixed wing 402 on the side wall of the test mold barrel 300, preventing the test mold barrel 300 from stress deformation. At the same time, it ensures the friction coefficient between it and the test mold barrel 300 so that the positions of the two are not offset, and avoids the vibration phenomenon caused by the material being too soft and elastic, reducing vibration and thus reducing the frequency of abnormal noise.

[0037] The beneficial effects of the present invention are as follows: the technical solution is easy to assemble and has high stability; the displacement of the test mold barrel 300 will not deviate during a long-term compaction test; and no resonance or abnormal noise will occur.

[0038] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A test mold assembly for a Marshall compactor, characterized in that: include Hard pier (100); A bottom plate (200); the bottom plate (200) is assembled on the hard pier (100); A trial mold barrel (300); the trial mold barrel (300) can be assembled on the top of the bottom plate (200); A fixing unit (400); the fixing unit (400) is used to fix the trial mold barrel (300) on the bottom plate (200).

2. A test mold assembly for a Marshall compaction instrument according to claim 1, characterized in that: The top of the bottom plate (200) is provided with a limiting groove (201) for the lower edge of the trial mold barrel (300) to be embedded.

3. A test mold assembly for a Marshall compaction instrument according to claim 1, characterized in that: The fixing unit (400) comprises a fixing ring (401), and the side wall edge of the fixing ring (401) is further provided with at least two fixing wings (402), the fixing wings (402) are perpendicular to the surface of the fixing ring (401) and extend downward, the length of the fixing wings (402) is the same as the height of the trial mold barrel (300), and the bottom of the fixing wings (402) is further provided with a fixing ear (403), the fixing ear (403) is horizontally arranged, and the fixing ear (403) is provided with a first locking hole (404).

4. A test mold assembly for a Marshall compaction instrument according to claim 3, characterized in that: The bottom plate (200) has a locking groove (202) for the fixing ear (403) to be embedded therein, and a second locking hole (203) is provided in the locking groove (202). When the fixing ear (403) is assembled, the second locking hole (203) is coaxially arranged with the first locking hole (404).

5. The test mold assembly for a Marshall compaction instrument according to claim 3, characterized in that: The bottom surface of the fixing ring (401) is provided with a first slot (4011), and the first slot (4011) is arranged concentrically with the fixing ring (401); the fixing unit (400) further includes a shock-absorbing pad, and the shock-absorbing pad includes an inserting portion (510) embedded in the first slot (4011) and a pad portion (520) located between the bottom surface of the fixing ring (401) and the top upper edge of the trial mold barrel (300) during assembly.

6. A test mold assembly for a Marshall compaction apparatus according to claim 3, characterized in that: A second slot (4021) is further provided on the inner side wall of the fixed wing (402), and the second slot (4021) extends from the top of the fixed wing (402) to the bottom of the fixed wing (402). The fixed unit (400) further comprises a compensation pad (600), the back surface of the compensation pad (600) is embedded in the second slot (4021), and the front surface of the compensation pad (600) is in an arc shape convex outward, and the front surface of the compensation pad (600) is exposed to the opening of the first slot (4011).

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