Digital rock point load display

Digital rock point load displayIntroduction: XH-DH seriesRock point load testerEquipped with LCD display, force accuracy up to 0.01kN, ultra long standby, and fast charging battery, it is convenient to operate anytime and anywhere!

Measurable sample status: any sample
Measurement range: 0mm-120mm
Scope of application: Rock pressure test

1Digital rock point load displayPurpose:
The rock point load tester is a testing instrument used for rock point load testing and determining the strength index of rock point load. According to the rock point load strength index, the uniaxial compressive strength of the rock can be calculated and determined, the anisotropy of the rock can be determined (i.e. the ratio of the maximum and minimum values of different point load strengths), the weathering zone can be determined, the rock drilling speed can be estimated, and the rock can be classified, etc.
The rock point load tester is a testing instrument suitable for use on construction sites. The point load test has low requirements for the preparation of rock samples, which can be rock core samples for engineering exploration or irregular samples with slight adjustments. Sample preparation does not require specialized mechanical processing. Compared with conventional testing, it has the characteristics of fast testing speed, short testing cycle, simple method, and low cost. It can be widely used in on-site testing of construction projects such as geology, mining, hydropower, railways, and transportation. The rock point load test was officially listed as one of the methods for determining rock strength by the Test Methods Committee of the Society of Rock Mechanics in 1972, and was revised by the Test Methods Committee of the Society of Rock Mechanics in 1985. The point load strength of rocks has been widely applied in China's standards and many departmental specifications.
IITechnical performance parameters
1. Maximum output of jack: 50KN (5T) 100kN (10T)
2. Rated load capacity of sensor: 50KN or 100kN
3. Piston diameter: Φ 32mm
4. Piston maximum stroke: 140mm
5. Loading point maximum spacing: 90mm
6. Allow maximum sample width: 90mm
7. Allow the smallest length of the specimen along the loading direction: 40mm
8. Reading method: LCD display, electronic peak memory
9. Force measurement error: ≤ 1% F.S
10. Working temperature: -20~45 ℃
11. Power supply: rechargeable battery
12. Geometric dimensions (L × W × H): 280mm × 250mm × 640mm
13. Net weight: 29kg
IIIStructure and Characteristics
1. Adopting a horizontal structure, it is convenient to apply force and has good stability.
2. The reaction frame adopts a cylindrical structure, which has good neutrality, no eccentricity, a sturdy and compact structure, and can meet the testing requirements of high-strength and large rock core samples.
3. The jack is installed on the cylindrical outer shell, processed with high-quality and high-strength materials, with a compact and reasonable structure, beautiful appearance, light weight, and easy portability.
4. The loading cone is made of hard alloy material, which has high strength and durability.
5. The independent electronic force measurement system is composed of strain sensors and liquid crystal display instruments, which have the characteristics of high resolution, high testing accuracy, and convenient reading.
6. Powered by rechargeable lithium batteries, convenient for outdoor use.
4、 Instructions for use
1. Prepare for rock testing according to the requirements of the rock testing regulations.
2. Check whether the tester is placed smoothly, whether the jack is loaded and unloaded normally, and whether the ball seat between the jack and the pressure frame is aligned.
3. Adjust the middle screw of the jack according to the height of the sample, so that the bottom plate of the lower pressure head rises (or falls) to the appropriate height, and tighten the bottom screw of the jack with the pressure rod of the jack.
4. Place the sample between the upper and lower pressure heads, select the location of the pressure point, and apply load to the jack to make the sample and pressure head make contact.
5. Load the jack according to the speed at which the sample is sheared in 10-20 seconds until the sample is damaged.
6. The vertical displacement scale on the pull rod can read the vertical displacement changes before and after the test.
7. Specific test requirements and calculations can be found in the corresponding test procedures.
8. At the end of the experiment, loosen the screw at the bottom of the jack (using a force rod), and press the upper end of the jack screw with your hand to reset the jack. Clean up the gravel between the upper and lower pressure plates and prepare for the next test.
9. The test pressure value is directly displayed on the LCD screen.