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Low-temperature breaking test device by freezing for bituminous mixture

A technology of asphalt mixture and test device, which is applied in the direction of material inspection products, etc., can solve the problems of easy-to-deform gear transmission accuracy and low accuracy of the frame, and achieve the effects of high positioning accuracy, elimination of influence, and stable transmission

Inactive Publication Date: 2009-03-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-temperature freeze-break test device for asphalt mixture in order to solve the problems that the frame of the existing asphalt mixture test device is easily deformed and the gear transmission accuracy is not high

Method used

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  • Low-temperature breaking test device by freezing for bituminous mixture
  • Low-temperature breaking test device by freezing for bituminous mixture
  • Low-temperature breaking test device by freezing for bituminous mixture

Examples

Experimental program
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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 and image 3 Describe this embodiment, this embodiment includes four guide rails 1, a first fixed seat 2, a first slide plate 3, two pillars 4, a ball screw 5, a first flange 7, a motor 10, and two specimen fixtures 11 , the second fixed seat 12, the second slide 13, the connecting rod 14 and the load cell 15, the first slide 3 is provided with the first vertical dovetail groove 3-1, the second slide 13 is provided with the second vertical dovetail Groove 13-1, one end of each specimen fixture 11 is provided with dovetail 11-2, and the first sliding plate 3 and the second sliding plate 13 are arranged oppositely, and the first vertical dovetail groove 3-1 and the second vertical dovetail groove 13- 1. Set up facing, use the test piece centering device to place the upper and lower ends of the test piece 19 in the grooves 11-1 of the two test piece fixtures 11, and glue the test piece 19 and the test piece fixture 11 fir...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination figure 1 Describe this embodiment, the difference between this embodiment and specific embodiment 1 is: it also adds a coupling 6, one end of the coupling 6 is connected with the output shaft of the motor 10, and the other end is connected with the ball screw 5. Such design makes the present invention easy to assemble and disassemble. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0009] Specific implementation mode three: combination figure 1 This embodiment is described. The difference between this embodiment and the first embodiment is that it also adds a second flange 8, which is arranged between the coupling 6 and the first flange 7 and is sleeved on the Two struts on 4. This design makes the motor 10 work more stably. Other components and connections are the same as those in the first embodiment.

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Abstract

The invention discloses a low-temperature freeze-fracturing test device for an asphalt mixture, and relates to a test device for the asphalt mixture. The device aims to solve problems that a frame for the asphalt mixture is easy to distort and gears have low accuracy in the prior test device. Two test piece fixtures are arranged in a first vertical dovetail groove and a second vertical dovetail groove respectively, a first sliding plate and a second sliding plate are sleeved on four guide rails, one end of a nut is connected with the second sliding plate through a connecting piece, a first fixed base and a second fixed base are fixed at both ends of the four guide rails respectively, one end of a connecting rod is fixedly connected with the end surface of the first sliding plate, while the other end of the connecting rod passes through a first central hole on the first fixed base and is connected with a force measurement sensor, one end of each of two supporting columns is fixedly connected with the second fixed base respectively, while the other end of each of two supporting columns is fixedly connected with a first flange, a motor is fixed on the first flange, and an output end of the motor is connected with a ball screw. The device can perform real-time displacement compensation for the deformation of test pieces, and eliminate the influence of a measurement system on the test result along with the deformation of the test pieces when the temperature is reduced.

Description

technical field [0001] The invention relates to an asphalt mixture test device. Background technique [0002] At present, most of the racks of the existing asphalt mixture test devices are made of special materials (indium steel), which are expensive, and will shrink and deform to a certain extent as the temperature decreases, which will have a certain impact on the test results; now The transmission of the asphalt mixture test device mostly adopts gear transmission, and the precision is not high. Contents of the invention [0003] The object of the present invention is to provide a low-temperature freeze-break test device for asphalt mixture to solve the problems of easy deformation of the frame and low gear transmission precision of the existing asphalt mixture test device. [0004] The present invention includes four guide rails, a first fixed seat, a first slide plate, two pillars, a ball screw, a first flange, a motor, two test piece fixtures, a second fixed seat, a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/42
Inventor 谭忆秋薛忠军张磊程小亮韩超欧阳剑
Owner HARBIN INST OF TECH
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