Mold for preparing asphalt oxygen index sample

Abstract

The utility model provides a mold for preparing an asphalt oxygen index sample. The mold comprises a bottom plate, a mold frame and a positioning extrusion mechanism, a positioning through groove is formed in one side of the bottom plate; the multiple mold frames are sequentially clamped in the positioning through groove in a sliding mode in the length direction of the positioning through groove, and each mold frame comprises two half mold frames which are symmetrically arranged to define a groove for containing an asphalt sample; the positioning extrusion mechanism can oppositely extrude the multiple mold frames in the length direction of the positioning through groove. According to the utility model, the plurality of mold frames are clamped in the positioning through grooves on the bottom plate, so that the mold frames are positioned in the length direction; the mold frames are filled with asphalt to be tested, and then the mold frames are extruded by the positioning extrusion mechanism, so that an asphalt sample with relatively high precision can be prepared, the asphalt does not need to be cut, and only the two half mold frames need to be split; and a plurality of prepared asphalt samples are relatively high in consistency and basically the same in quality.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt oxygen index specimen preparation, and specifically relates to a mold for preparing asphalt oxygen index specimens. Background Art

[0002] According to the standard for determining the combustion performance of asphalt, "Determination of the combustion performance of asphalt - Oxygen index method" NB / SH / T 0815 - 2010, regulations are made for the preparation of specimens, but the specimen - forming method is relatively simple and rough, the accuracy of the mold frame is poor, and the details are not paid attention to. Artificial trimming is required in the later stage, resulting in poor consistency and uneven quality of the formed specimens. Especially, the appearance forms are inconsistent, which may cause unstable results and poor repeatability during the detection process, undoubtedly bringing adverse effects to the smooth progress of the detection work of the test personnel. Content of the Utility Model

[0003] Aiming at the above - mentioned problems existing in the prior art, the technical problem to be solved by the utility model is that the specimen - forming method is relatively simple and rough, the accuracy of the mold frame is poor, the details are not paid attention to, and artificial trimming is required in the later stage, resulting in poor consistency and uneven quality of the formed specimens. Especially, the appearance forms are inconsistent, which may cause unstable results and poor repeatability during the detection process, undoubtedly bringing adverse effects to the smooth progress of the detection work of the test personnel.

[0004] To solve the above - mentioned technical problems, the utility model adopts the following technical scheme: A mold for preparing asphalt oxygen index specimens, comprising:

[0005] A bottom plate, on one side of which a positioning through - slot is opened;

[0006] A mold frame, a plurality of the mold frames are sequentially slidably clamped in the positioning through - slot along the length direction of the positioning through - slot. The mold frame includes: two symmetrically arranged half - mold frames, which enclose a groove for accommodating an asphalt specimen; and

[0007] A positioning and extrusion mechanism, which can squeeze a plurality of the mold frames towards each other along the length direction of the positioning through - slot.

[0008] Preferably, limiting slots are respectively opened on opposite sides in the length direction of the half - mold frame, and the limiting slots are arranged along the width direction of the half - mold frame; a limiting convex edge matched with the limiting slots is arranged in the positioning through - slot.

[0009] Preferably, the positioning and extrusion mechanism includes: a base, a threaded rod and an extrusion plate; the base is detachably installed on the bottom plate, sliding grooves for slidingly matching with the limiting convex edges are opened at both ends of the extrusion plate; the threaded rod is arranged along the length direction of the positioning through - slot, one end of the threaded rod is rotatably connected to the extrusion plate, and the other end of the threaded rod penetrates through the base and is threadedly connected to the base.

[0010] Preferably, a knob is fixedly installed on the threaded rod.

[0011] Preferably, the positioning and pressing mechanism further includes a bolt; a threaded hole is formed in the bottom plate, a jack is formed in the base, and the bolt passes through the jack and is threadedly connected to the threaded hole to detachably install the base on the bottom plate.

[0012] Preferably, a plurality of threaded holes are provided in the length direction of the positioning through groove.

[0013] Compared with the prior art, the utility model has at least the following advantages:

[0014] 1. In the utility model, a plurality of mold frames are clamped in the positioning through grooves on the bottom plate to position the mold frames in the length direction; then, the mold frames are filled with asphalt to be tested, and then the positioning and pressing mechanism is used to press the plurality of mold frames to position the plurality of mold frames in the width direction and simultaneously press the asphalt to be tested. In this way, asphalt specimens with high precision can be prepared without cutting the asphalt, and only the two half mold frames need to be disassembled; and the plurality of prepared asphalt specimens have high consistency and basically the same quality.

[0015] 2. In the utility model, the threaded rod is rotated, and the threaded rod pushes the pressing plate to move under the action of the thread. The pressing plate abuts against the half mold frame at the edge and applies a thrust to the half mold frame; through the thrusts on both opposite sides, the plurality of mold frames can be clamped, so that the two symmetrically arranged half mold frames are tightened, the gap between the two half mold frames is reduced, and the precision of the asphalt specimen is improved, and asphalt specimens with high precision can be prepared.

[0016] 3. In the utility model, by providing a plurality of threaded holes, the bolt can be selectively threadedly connected to one of the threaded holes, so as to change the distance between the two bases and realize the increase or decrease of the number of different mold frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the utility model, the drawings required for the specific embodiments will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 A perspective view of a mold for preparing an asphalt oxygen index specimen provided for an embodiment.

[0019] Figure 2 A perspective view of the bottom plate provided for an embodiment.

[0020] Figure 3 A perspective view of the mold frame provided for an embodiment.

[0021] Figure 4 Stereogram of the positioning and extrusion mechanism provided for the embodiment.

[0022] Reference numerals: 1 - bottom plate, 11 - positioning through groove, 12 - limiting convex edge, 13 - threaded hole, 2 - mold frame, 21 - half mold frame, 22 - groove, 23 - limiting groove, 3 - positioning and extrusion mechanism, 31 - base, 32 - threaded rod, 33 - extrusion plate, 34 - chute, 35 - knob, 36 - bolt, 37 - jack. Detailed implementation manners

[0023] The embodiments of the technical solution of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present utility model more clearly, so they are only examples and cannot be used to limit the protection scope of the present utility model.

[0024] In the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0025] In the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] See Figures 1-4 , the embodiment provided by the present utility model: a mold for preparing asphalt oxygen index specimens, including: a bottom plate 1, a mold frame 2 and a positioning and extrusion mechanism 3; a positioning through groove 11 is opened on one side of the bottom plate 1; a plurality of mold frames 2 are sequentially slidably clamped in the positioning through groove 11 along the length direction of the positioning through groove 11. The mold frame 2 includes: two symmetrically arranged half mold frames 21 to enclose a groove 22 for accommodating asphalt specimens; the positioning and extrusion mechanism 3 can oppositely extrude a plurality of mold frames 2 along the length direction of the positioning through groove 11.

[0027] During specific implementation, a plurality of mold frames 2 are clamped in the positioning through grooves 11 on the bottom plate 1 to position the mold frames 2 in the length direction. Then, the grooves 22 of the mold frames 2 are filled with the asphalt to be tested, and then the positioning and extrusion mechanism 3 is used to extrude the plurality of mold frames 2 to position the plurality of mold frames 2 in the width direction, and at the same time, the asphalt to be tested is extruded. In this way, asphalt specimens with higher precision can be prepared, and there is no need to cut the asphalt. Just split the two half mold frames 21. Moreover, the plurality of prepared asphalt specimens have high consistency and basically the same quality.

[0028] See Figures 1-4 , in other embodiments, limiting grooves 23 are respectively formed on opposite sides in the length direction of the half mold frame 21, and the limiting grooves 23 are arranged along the width direction of the half mold frame 21; a limiting convex edge 12 matched with the limiting grooves 23 is arranged in the positioning through groove 11. During specific implementation, the limiting convex edge 12 is slidably clamped into the limiting groove 23, so that the half mold frame 21 can be limited in the height direction to improve the installation stability of the half mold frame 21.

[0029] See Figures 1-4 , in other embodiments, the positioning and extrusion mechanism 3 includes: a base 31, a threaded rod 32 and an extrusion plate 33; the base 31 is detachably installed on the bottom plate 1, and sliding grooves 34 matched with the sliding of the limiting convex edge 12 are formed at both ends of the extrusion plate 33; the threaded rod 32 is arranged along the length direction of the positioning through groove 11, one end of the threaded rod 32 is rotatably connected to the extrusion plate 33, and the other end of the threaded rod 32 penetrates through the base 31 and is threadedly connected to the base 31; further, a knob 35 is fixedly installed on the threaded rod 32, so that the threaded rod 32 can be rotated more conveniently through the knob 35.

[0030] During specific implementation, after the plurality of mold frames 2 are installed, the base 31 is installed on the bottom plate 1, and the sliding grooves 34 on the extrusion plate 33 are slidably clamped on the limiting convex edge 12; then the threaded rod 32 is rotated through the knob 35, and the threaded rod 32 pushes the extrusion plate 33 to move under the action of the thread. The extrusion plate 33 abuts against the half mold frame 21 at the edge and applies a thrust to the half mold frame 21. Through the thrusts on the opposite sides, the plurality of mold frames 2 can be clamped, so that the two symmetrically arranged half mold frames 21 are tightened, the gap between the two half mold frames 21 is reduced, and the precision of the asphalt specimen is improved. In this way, asphalt specimens with higher precision can be prepared.

[0031] See Figures 1-4, in other embodiments, the positioning and pressing mechanism 3 further includes a bolt 36; a threaded hole 13 is formed on the bottom plate 1, and a jack 37 is formed on the base 31. The bolt 36 passes through the jack 37 and is threadedly connected to the threaded hole 13 to detachably mount the base 31 on the bottom plate 1. In this way, the base 31 can be detachably mounted on the bottom plate 1 through the cooperation of the bolt 36 and the threaded hole 13. Further, a plurality of threaded holes 13 are provided in the length direction of the positioning through groove 11; by providing a plurality of threaded holes 13, the bolt 36 can be selectively threadedly connected to one of the threaded holes 13, so as to change the distance between the two bases 31 and realize the increase or decrease of different numbers of mold frames 2.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A mold for preparing asphalt oxygen index samples, characterized in that: include: A bottom plate, one side of which is provided with a positioning slot; A mold frame, wherein a plurality of mold frames are sequentially slidably engaged in the positioning slot along the length direction of the positioning slot, and the mold frame comprises: two symmetrically arranged half mold frames to enclose a groove for accommodating the asphalt sample; and The positioning extrusion mechanism can extrude the plurality of mold frames in opposite directions along the length direction of the positioning through slot.

2. A mold for preparing asphalt oxygen index samples according to claim 1, characterized in that: The half mold frame is provided with limiting grooves on opposite sides in the length direction, and the limiting grooves are arranged along the width of the half mold frame; the positioning groove is provided with a limiting convex edge that cooperates with the limiting groove.

3. A mold for preparing asphalt oxygen index samples according to claim 2, characterized in that: The positioning and extrusion mechanism includes: a base, a threaded rod and an extrusion plate; the base is detachably mounted on the bottom plate, and both ends of the extrusion plate are provided with sliding grooves that slide with the limiting convex edge; the threaded rod is arranged along the length direction of the positioning groove, and one end of the threaded rod is rotatably connected to the extrusion plate, and the other end of the threaded rod passes through the base and is threadedly connected to the base.

4. A mold for preparing asphalt oxygen index samples according to claim 3, characterized in that: A knob is fixedly mounted on the threaded rod.

5. The mold for preparing asphalt oxygen index specimen according to claim 3, characterized in that: The positioning and extrusion mechanism also includes a bolt; a threaded hole is provided on the bottom plate, and an insertion hole is provided on the base. The bolt passes through the insertion hole and is threadedly connected with the threaded hole to detachably mount the base on the bottom plate.

6. A mold for preparing asphalt oxygen index samples according to claim 5, characterized in that: A plurality of threaded holes are arranged in the length direction of the positioning slot.

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