Device for measuring Lieu fluidity of cast asphalt mixture

Abstract

The utility model discloses a device for measuring the Lieu fluidity of a cast asphalt mixture. The device comprises an external supporting structure, a constant-temperature barrel and a drop hammer, a plurality of sliding rails are arranged at the bottom of one side of the external supporting structure, a plurality of rolling wheels are installed at the bottom of the constant-temperature barrel and matched with the sliding rails, a lifting assembly is arranged on the external supporting structure and connected with one end of a stirring mechanism, and the other end of the stirring mechanism extends into the constant-temperature barrel. A plurality of heating pieces are arranged in an interlayer cavity between the outer wall and the inner wall of the constant-temperature barrel, the drop hammer is installed on an external supporting structure, the drop hammer and the stirring mechanism are located on the same side of the external supporting structure, and a heating piece is arranged in the drop hammer. According to the utility model, the convenience of stirring and moving is realized, the operation process is simplified, the experiment time is saved, the experiment efficiency is improved, and meanwhile, the accuracy of the Lieu fluidity test of the cast asphalt mixture is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bituminous mixture fluidity measurement technical field relates especially to a kind of device for determining Liu Eer fluidity of casting type bituminous mixture. BACKGROUND

[0002] With the vigorous development of infrastructure construction, the total mileage of expressway is continuously extended, which not only greatly promotes the economic exchange and personnel communication between regions, but also puts forward higher requirements for the quality and performance of pavement materials. Among them, casting type asphalt has been more and more widely used in expressway construction due to its good flexibility, durability and convenient construction. However, in the actual application process, how to accurately and efficiently evaluate the performance of casting type asphalt mixture, especially its Liu Eer fluidity, has become one of the key links to ensure the engineering quality. However, the traditional device for determining the Liu Eer fluidity of casting type asphalt mixture can meet the basic testing requirements to some extent, but there are some defects in actual operation. For example, these devices often cannot ensure that the sample can maintain a constant temperature within a given temperature range during the entire test process. In addition, the traditional device also has problems in controlling the temperature of the drop hammer, such as being unable to control the temperature of the drop hammer, and the temperature change of the drop hammer may affect its impact force on the sample, thereby affecting the accuracy of the test results.

[0003] Therefore, we urgently need a device for determining the Liu Eer fluidity of casting type asphalt mixture to improve the accuracy of the experiment. SUMMARY

[0004] The utility model aims at providing a kind of device for determining the Liu Eer fluidity of casting type asphalt mixture, to solve the problem of low accuracy of test results caused by insufficient temperature control of existing device.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A kind of device for determining the Liu Eer fluidity of casting type asphalt mixture, comprising an external support structure, a constant temperature barrel and a drop hammer;

[0007] A plurality of slide rails are provided on one side of the bottom of the external support structure, a plurality of rollers are installed on the bottom of the constant temperature barrel, and the plurality of rollers cooperate with the slide rails. A lifting assembly is provided on the external support structure, and one end of the lifting assembly is connected to the stirring mechanism. The other end of the stirring mechanism extends into the constant temperature barrel. A plurality of heating fins are provided in the interlayer cavity of the outer wall and the inner wall of the constant temperature barrel. The drop hammer is installed on the external support structure, and the drop hammer and the stirring mechanism are located on the same side of the external support structure. A heating element is provided inside the drop hammer.

[0008] Further, one side of the external support structure is provided with a control switch, the control switch is electrically connected with the lifting assembly and the stirring mechanism, and the control switch is electrically connected with the heating piece.

[0009] Further, the lifting assembly is provided with a plurality of air cylinders, cylinder bodies of the plurality of air cylinders are fixedly connected with the external support structure, the plurality of air cylinders are fixedly connected with the support plate through piston rods, and the stirring mechanism is fixedly installed at one end of the support plate.

[0010] Further, the motor in the stirring mechanism is fixedly installed inside the support plate, and the motor is connected with the blade through a rotating shaft.

[0011] Further, the roller is a brake wheel.

[0012] Further, one side of the constant-temperature barrel is provided with a handle.

[0013] Further, the top of the drop hammer is provided with a heating switch, and the heating switch is electrically connected with the heating piece.

[0014] Further, the drop hammer is installed on the external support structure through a support rod, and the drop hammer and the support rod are fastened through screws.

[0015] Further, one end of the drop hammer is provided with a sensor.

[0016] Further, a drop hammer fixer is slidably arranged on the drop hammer.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides a kind of device for determining Liu Er fluidity of casting asphalt mixture, by fusing constant temperature bucket and barrel, heating sheet is set in the interlayer chamber of constant temperature bucket outer wall and inner wall, reduce the problem that constant temperature bucket and barrel need to be fixed, reduce the operation that asphalt mixture is stirred and poured into barrel again into constant temperature bucket, reduce the influence of temperature change in transfer process on casting asphalt mixture and avoid the risk of scalding of experimenter in transfer process.Constant temperature bucket and barrel are fused into one, and heating and mixing are also facilitated, improving the accuracy of Liu Er fluidity test of casting asphalt mixture.At the same time, by being provided with lifting assembly on external support structure, one end of lifting assembly is connected with stirring mechanism, the other end of stirring mechanism is inserted into constant temperature bucket, when lifting assembly drives stirring mechanism to descend, asphalt mixture in barrel can be stirred, when lifting assembly drives stirring mechanism to ascend, the restriction to constant temperature bucket can be removed, so that movement can be carried out.In addition, drop hammer is arranged beside stirring mechanism, a plurality of slide rails are arranged on the bottom of one side of external support structure, a plurality of rollers are installed on the bottom of constant temperature bucket, a plurality of rollers cooperate with slide rail, so that asphalt mixture can be moved to the lower side of drop hammer through slide rail after stirring, and the next experiment can be carried out immediately, saving time, and heating element is arranged in drop hammer, avoiding the risk of scalding caused by experimenter transferring heated drop hammer.The utility model realizes the convenience of stirring and moving, simplifies the operation process, not only saves experimental time, improves experimental efficiency, but also significantly improves the accuracy of Liu Er fluidity test of casting asphalt mixture, provides more reliable material performance data support for highway construction, so as to further promote the high-quality development of infrastructure construction. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying creative labor, other related drawings can also be obtained according to these drawings.

[0020] Figure 1 It is the device structure schematic diagram of the utility model for determining Liu Er fluidity of casting asphalt mixture.

[0021] Figure 2 It is the drop hammer sectional view of the utility model.

[0022] Figure 3 It is the constant temperature bucket sectional view of the utility model.

[0023] Wherein: 1-control switch, 2-external support structure, 3-constant temperature barrel, 4-drop hammer, 5-stirring mechanism, 21-cylinder, 22-piston rod, 23-supporting plate, 31-roller, 32-slideway, 33-heating sheet, 34-handle, 41-sensor, 42-heating switch, 43-heating element, 44-screw, 45-drop hammer fixer, 51-rotating shaft, 52-blade, 53-motor. DETAILED DESCRIPTION

[0024] To make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will be a clear and complete description of the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0026] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0027] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "horizontal", "inner", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the embodiments of the utility model, still need explaining, unless another explicit provision and limitation, if appearing term "arrangement", "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the communication. For ordinary skilled in the art, the above-mentioned terms can be understood according to the specific meaning in the utility model.

[0030] The utility model will be further described in detail below in combination with the drawings:

[0031] Referring to Figure 1 The utility model provides a kind of device for determining Liu Eer fluidity of pouring asphalt mixture, including control switch 1, external support structure 2, constant temperature barrel 3, drop hammer 4, lifting assembly and stirring mechanism 5.Lifting assembly is set to the top of external support structure 2, one end of lifting assembly is connected with one end of stirring mechanism 5, another end of stirring mechanism 5 is in constant temperature barrel 3, can be used for stirring asphalt mixture in material cylinder, drop hammer 4 is fixed on external support structure 2, with stirring mechanism 5 on the same side of external support structure 2.

[0032] Lifting assembly includes several cylinders 21, piston rod 22 and support plate 23.Support plate 23 is set to the top of cylinder 21, the cylinder body of several cylinders 21 is fixedly connected with external support structure 2, cylinder 21 is fixedly connected with support plate 23 by piston rod 22, and stirring mechanism 5 is fixedly connected with support plate 23.Support plate 23 is abutted on the top of constant temperature barrel 3, stirring mechanism 5 can be made to stir in constant temperature barrel 3 by controlling lifting assembly, and the piston rod 22 of cylinder 21 is telescopic along vertical direction, for lifting or lowering the height of support plate 23, so that stirring mechanism 5 is raised or lowered relative to constant temperature barrel 3.

[0033] Constant temperature barrel 3 bottom is equipped with several rollers 31, and the bottom of one side of external support structure 2 is provided with several slide rails 32, and several rollers 31 are matched with slide rails 32, so that the purpose of transporting constant temperature barrel 3 to drop hammer 4 below for asphalt fluidity experiment can be realized.Roller 31 adopts the form of brake wheel, which can be used to fix constant temperature barrel 3.Through slide rail 32, mixed material can be easily dragged to drop hammer 4 below, so that the risk of scalding caused by experimenters transferring mixed material to material cylinder can be reduced, and the safety of experimenters is ensured.Constant temperature barrel 3 is provided with handle 34 on one side, so that experimenters can move constant temperature barrel 3 without being scalded.

[0034] As Figure 3As shown, the outer wall and the inner wall of the constant-temperature barrel 3 are provided with a sandwich cavity, and a plurality of heating plates 33 are arranged in the sandwich cavity. The plurality of heating plates 33 are fixedly connected to the inside of the constant-temperature barrel 3, and the plurality of heating plates 33 are electrically connected to the control switch 1. The experimenter can adjust the temperature of the heating plates 33 through the control switch 1, so as to achieve the purpose of heating the inside of the constant-temperature barrel 3, thereby continuously heating the cast asphalt mixture, so that the cast asphalt mixture has good fluidity and self-compacting performance, and the stirring mechanism 5 can be conveniently stirred.

[0035] The stirring mechanism 5 comprises a motor 53, a rotating shaft 51 and a blade 52. The shell of the motor 53 is mounted in the inside of the support plate 23, the rotating shaft 51 of the motor is rotatably connected to the top support plate 23, and the motor 53 is fixedly connected to the blade 52 through the rotating shaft 51. The blade 52 is stretched into the inside of the constant-temperature barrel 3 through the lifting assembly for stirring.

[0036] The outer support structure 2 is provided with a support rod outwardly extending for fixing the drop hammer 4, and the support rod can move up and down to adjust the position of the drop hammer 4. The drop hammer 4 is fastened to the support rod through screws 44, and a heating mechanism is mounted on the drop hammer 4. The heating mechanism comprises a heating piece 43, a sensor 41 and a heating switch 42. The heating switch 42 is electrically connected to the heating piece 43 for adjusting the temperature of the heating piece 43. The heating piece 43 is used for heating the drop hammer 4. The sensor 41 is mounted on one end of the drop hammer 4 for detecting the temperature of the drop hammer 4. A drop hammer fixer 45 is slidably arranged on the drop hammer 4, and the drop hammer fixer 45 is placed on the constant-temperature barrel 3 to prevent the drop hammer 4 from shaking during falling.

[0037] A control switch 1 is arranged on one side of the outer support structure 2. The control switch 1 is electrically connected to the lifting assembly and the stirring mechanism 5. The control switch 1 can control the air cylinder to drive the stirring mechanism 5 to ascend or descend, so as to stir the asphalt mixture in the constant-temperature barrel 3. In addition, the stirring time can be set on the control switch 1, and the stirring is automatically stopped and the stirring mechanism 5 is lifted after the time. The control switch 1 is electrically connected to the heating plate 33. The heating plate 33 can be controlled by controlling the switch of the heating plate 33 to heat the constant-temperature barrel 3, so that the asphalt mixture reaches the set temperature.

[0038] In a specific embodiment of the present application, the number of guide rails 32 is two groups, and the number of rollers 31 is four. Two rollers 31 are connected to one guide rail 32. The constant-temperature barrel 3 can be transported through the guide rail 32.

[0039] The use method of the device for measuring the Liu Er fluidity of cast asphalt mixture of the present application is as follows:

[0040] When the asphalt fluidity test is carried out, the constant temperature barrel 3 is first fixed at the stirring mechanism 5 on one side of the external support structure 2. The constant temperature barrel 3 is heated by the heating sheet 33, and when the constant temperature reaches the set temperature, the asphalt mixture to be stirred is poured, the control switch 1 is controlled to make the air cylinder 21 drive the stirring mechanism 5 to descend into the constant temperature barrel 3, the motor 53 drives the rotating shaft 51 to rotate, so that the internal mixture reaches the predetermined temperature to be stirred, so as to achieve the purpose of mixing the asphalt mixture, so that the asphalt mixture is uniformly heated, and the temperature of the test sample caused by the transfer of the asphalt mixture is avoided. The experimenter can control the control switch 1 to heat the inside of the constant temperature barrel 3 to reach the specified temperature, and after the specified temperature is reached, the experimenter can turn off the heating sheet 33, and if the temperature is obviously decreased due to weather influence, the experimenter can turn on the heating sheet 33 again, so that the temperature of the mixture is always in the required interval of the experiment, facilitating the mixing of the asphalt mixture.

[0041] By setting the stirring time on the control switch 1, the stirring lifting assembly automatically stops after the time, and the stirring mechanism 5 is lifted up. At this time, the constant temperature barrel 3 is moved to the other side along the slide rail 32 through the handle 34 on the constant temperature barrel 3, and is transferred to the drop hammer 4.

[0042] The position of the drop hammer 4 is fixed, and the heating mechanism in the drop hammer 4 can be preheated during the stirring of the mixture. The heating switch 42 is turned on to make the heating piece 43 work, and the heating piece 43 heats the drop hammer 4. After the stirring is finished, the constant temperature barrel 3 is moved to the lower side of the drop hammer 4 through the slide rail 32, the drop hammer fixing device 45 is placed on the constant temperature barrel 3, and the fluidity test work can be carried out. When the sensor 41 detects that the temperature of the drop hammer 4 is consistent with the temperature of the asphalt mixture, the heating is stopped, the fastening screw 44 of the drop hammer 4 is loosened, and the drop hammer 4 is freely dropped. The experimenter records the time between the two scale lines.

[0043] The above is only a preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An apparatus for determining the Liu-Er flow of a cast asphalt mixture, characterized in that, Including external support structure (2), constant temperature barrel (3) and drop hammer (4); The bottom of one side of the external support structure (2) is provided with a plurality of slide rails (32), the bottom of the constant temperature barrel (3) is provided with a plurality of rollers (31), the plurality of rollers (31) are matched with the slide rails (32), the external support structure (2) is provided with a lifting assembly, one end of the lifting assembly is connected with the stirring mechanism (5), the other end of the stirring mechanism (5) extends into the constant temperature barrel (3), a plurality of heating fins (33) are arranged in the interlayer cavity of the outer wall and the inner wall of the constant temperature barrel (3), the drop hammer (4) is installed on the external support structure (2), the drop hammer (4) and the stirring mechanism (5) are located on the same side of the external support structure (2), and the drop hammer (4) is internally provided with a heating element (43).

2. A device for determining the Lauwerier flowability of a cast asphalt mixture according to claim 1, characterized in that The control switch (1) is arranged on one side of the external support structure (2), and the control switch (1) is electrically connected with the lifting assembly and the stirring mechanism (5), and the control switch (1) is electrically connected with the heating fin (33).

3. A device for determining the Lauwerier flowability of a cast asphalt mixture according to claim 1, characterized in that A plurality of air cylinders (21) are arranged in the lifting assembly, the cylinder bodies of the plurality of air cylinders (21) are fixedly connected with the external support structure (2), and the plurality of air cylinders (21) are fixedly connected with the support plate (23) through the piston rods (22).

4. A device for determining the Lauwerier flowability of a cast asphalt mixture according to claim 3, characterized in that The motor (53) in the stirring mechanism (5) is fixedly installed in the inside of the support plate (23), and the motor (53) is connected with the blade (52) through the rotating shaft (51).

5. A device for determining the Lauwerier flowability of a cast asphalt mixture according to claim 1, characterized in that The roller (31) is a brake wheel.

6. A device for determining the Lauwerier flowability of a cast asphalt mixture according to claim 1, characterized in that A handle (34) is installed on one side of the constant temperature barrel (3).

7. A device for determining the Lauwerier flowability of a cast asphalt mixture according to claim 1, characterized in that The top of the drop hammer (4) is provided with a heating switch (42), and the heating switch (42) is electrically connected with the heating element (43).

8. The apparatus for determining the LauEr flowability of a cast asphalt mixture as defined in claim 1 wherein, The drop hammer (4) is installed on the external support structure (2) through a support rod, and the drop hammer (4) and the support rod are fastened through screws (44).

9. The apparatus for determining the LauEr flowability of a cast asphalt mixture as defined in claim 1, wherein, A sensor (41) is installed at one end of the drop hammer (4).

10. The apparatus for determining the LauEr flowability of a cast asphalt mixture as defined in claim 1, wherein, A drop hammer fixer (45) is sleeved on the drop hammer (4) in a sliding mode.

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