Marshall height non-demolding measuring device after full-particle-size compaction molding

Abstract

The utility model discloses a Marshall height non-demoulding measuring device after full particle size compaction molding, which comprises a main scale, an inner measuring claw and an outer measuring claw, the inner measuring claw and the outer measuring claw are oppositely arranged on two sides of the main scale, the inner measuring claw comprises an inner fixed measuring claw and an inner movable measuring claw, and the outer measuring claw comprises an outer fixed measuring claw and an outer movable measuring claw. A measuring dial plate is slidably arranged on one end face, with scales, of the main ruler, so that the measuring dial plate, the inner movable measuring jaw and the outer movable measuring jaw move synchronously. The outer side of the inner fixed measuring jaw is provided with a paper shoveling knife, and the bottom end of the outer measuring jaw is oppositely provided with a hollow cup. According to the utility model, isolation paper on the surface of the test piece can be shoveled by using the paper shoveling knife, and then the height of the test piece is measured by using the hollow cup, so that not only can the test accuracy be ensured, but also the test efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of road material testing equipment, and in particular to a device for measuring the Marshall height after full-size compaction molding without demolding. Background Technology

[0002] During the Marshall molding process in the laboratory, the height of the specimens needs to be measured to assess whether they meet national standards. According to the standards, the height of the molded specimens should be controlled within 63.5 mm ± 1.3 mm. Newly molded Marshall specimens are not fully bonded together due to the high temperature, and their height cannot be measured directly after demolding. The Marshall mold height is 81 mm, resulting in a height difference compared to the national standard requirements. Before demolding, the specimen is completely embedded in the mold, making precise measurement with calipers impossible. Existing equipment uses a steel ruler; after molding the Marshall specimen, the depth on both sides of the mold is measured with the steel ruler, and the specimen height is obtained by subtracting this depth from the original mold height. However, this method often results in errors, leading to incorrect height judgments during testing and ultimately rendering the specimens unusable. Utility Model Content

[0003] To address the shortcomings mentioned above, this utility model provides a device for measuring the Marshall height after full-size compaction molding without demolding.

[0004] To achieve the above objectives, this utility model provides a device for measuring the Marshall height after full-size compaction molding without demolding, including a main scale and inner and outer measuring claws disposed opposite to each other on both sides of the main scale. The inner measuring claw includes an inner fixed measuring claw and an inner movable measuring claw, and the outer measuring claw includes an outer fixed measuring claw and an outer movable measuring claw. A measuring dial is slidably provided on one end face of the main scale with a scale, so that the measuring dial, the inner movable measuring claw, and the outer movable measuring claw move synchronously.

[0005] The inner fixed measuring claw is provided with a paper scraper on its outer side, and the bottom end of the outer measuring claw is provided with a hollow cup.

[0006] Preferably, the inner side of the outer measuring claw is provided with a linear slide rail, the linear slide rail is provided with a sliding base block, the sliding base block is provided with a connecting column, the bottom end of the connecting column is connected to an arc-shaped block, and the arc-shaped block is connected to the hollow cup.

[0007] Preferably, the measuring dial has a numerical display screen in the center and a control button below the numerical display screen.

[0008] Preferably, a roller is provided between the measuring dial and the main scale.

[0009] Preferably, the top of the measuring dial is connected to the internal movable jaw by a fastening screw.

[0010] Preferably, the height of the paper scraper is 2-3 cm.

[0011] Preferably, the hollow cup has a height of 2cm and a diameter of 3cm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention allows for the removal of the release paper from the surface of the specimen using a scraper knife, followed by the measurement of the specimen's height using a hollow cup. This not only ensures the accuracy of the experiment but also improves its efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the measuring device of this utility model;

[0015] Figure 2 This is a partial schematic diagram of the measuring claws in this utility model;

[0016] Figure 3 This is a partially enlarged view of the internal fixing claw in this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The following is in conjunction with the appendix Figure 1 The present invention will be described in further detail as follows:

[0021] Reference Figure 1 This utility model provides a device for measuring the Marshall height after full-size compaction molding without demolding, including a main scale 1, a depth gauge 5 located at the tail end of the main scale 1, and inner measuring claws 2 and outer measuring claws 13 located opposite each other on both sides of the main scale 1. The inner measuring claw 2 includes an inner fixed measuring claw and an inner movable measuring claw, and the outer measuring claw 13 includes an outer fixed measuring claw and an outer movable measuring claw. A measuring dial 3 is slidably provided on one end face of the main scale 1 with a scale, so that the measuring dial 3, the depth gauge 5, the inner movable measuring claw and the outer movable measuring claw move synchronously.

[0022] Reference Figure 2 The inner side of the outer measuring claw 13 is provided with a linear slide rail 11, a sliding base block 12 is provided on the linear slide rail 11, a connecting post 9 is provided on the sliding base block 12, and an arc-shaped block is connected to the bottom end of the connecting post 9. The arc-shaped block is connected to the hollow cup 10.

[0023] Reference Figure 3 The outer side of the internal fixed measuring claw is equipped with a paper scraper 15.

[0024] Preferably, the measuring dial 3 has a numerical display screen 4 in the middle, a control button 7 below the numerical display screen 4, two control buttons 7 below the numerical display screen 4, a battery compartment cover on the right side of the numerical display screen 4, and a dial fastener 8 on the lower side of the measuring dial 3.

[0025] In this embodiment, a roller 6 is provided between the measuring dial 3 and the main scale 1. The top of the measuring dial 3 is connected to the inner movable measuring jaw by a fastening screw 15. The paper scraper is 2-3 cm high. The hollow cup 10 is 2 cm high and 3 cm in diameter.

[0026] This utility model provides an operating scheme:

[0027] Case 1: Measuring the height of a normal Marshall specimen;

[0028] Step 1: Before conducting the experiment, first connect the external measuring claw 13 and the hollow cup 10.

[0029] Step 2: According to the "Test Procedure for Asphalt and Asphalt Mixtures in Highway Engineering" (T 0702—2011 Method for Making Asphalt Mixture Specimens (Compaction Method)), the mixture is compacted on both sides 75 times to form a Marshall specimen.

[0030] Step 3: Remove the newly formed Marshall specimen from the Marshall compactor and remove the release paper from the surface of the specimen using a scraper knife 15.

[0031] Step 4: Click “zero” and press the switch button to turn on the device and start the measurement from zero.

[0032] Step 5: Open the device until it exceeds the height of the specimen, and clamp the specimen with the hollow cup 10. It is important to ensure that the scale of the device is parallel to the specimen to prevent the device from tilting and causing measurement errors. When measuring the specimen, use the hollow cup 10 to measure it three times at the same time to prevent uneven compaction from causing data errors.

[0033] Step 6: Read the data after the reading on the numerical display screen 4 has stabilized.

[0034] Step 7: Based on the height of the previous specimen, adjust the amount of mixture to be added to each specimen in real time, ensuring the height is controlled within 63.5mm ± 1.3mm.

[0035] Step 8: After the measurement is completed, close the instrument together, turn it off, and put it into the storage box.

[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for measuring the Marshall height after full-size compaction molding without demolding, characterized in that, It includes a main scale and inner measuring jaws and outer measuring jaws disposed on opposite sides of the main scale. The inner measuring jaw includes an inner fixed measuring jaw and an inner movable measuring jaw. The outer measuring jaw includes an outer fixed measuring jaw and an outer movable measuring jaw. A measuring dial is slidably provided on one end face of the main scale with a scale, so that the measuring dial, the inner movable measuring jaw and the outer movable measuring jaw move synchronously. The inner fixed measuring claw is provided with a paper scraper on its outer side, and the bottom end of the outer measuring claw is provided with a hollow cup.

2. The device for measuring the Marshall height after full-size compaction molding without demolding as described in claim 1, characterized in that, The inner side of the outer measuring claw is provided with a linear slide rail, the linear slide rail is provided with a sliding base block, the sliding base block is provided with a connecting column, the bottom end of the connecting column is connected to an arc-shaped block, and the arc-shaped block is connected to the hollow cup.

3. The device for measuring the Marshall height after full-size compaction molding without demolding as described in claim 2, characterized in that, The measuring dial has a numerical display screen in the center, and control buttons are located below the numerical display screen.

4. The device for measuring the Marshall height after full-size compaction molding without demolding as described in claim 3, characterized in that, A roller is provided between the measuring dial and the main scale.

5. The device for measuring the Marshall height after full-size compaction molding without demolding as described in claim 4, characterized in that, The top of the measuring dial is connected to the internal movable jaw by a fastening screw.

6. The device for measuring the Marshall height after full-size compaction molding without demolding as described in claim 5, characterized in that, The paper scraper blade is 2-3 cm high.

7. The device for measuring the Marshall height after full-size compaction molding without demolding as described in claim 6, characterized in that, The hollow cup has a height of 2cm and a diameter of 3cm.

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