The invention provides a drop hammer height adjusting device for high strain detection of a pile foundation, the device comprises: a cross beam support frame, an avoiding hole is opened in the middle of the surface of the cross beam support; a track extending through the avoiding hole, a tooth group is arranged on each of two surfaces of the track bar, and abutting sliding blocks are further arranged at two sides of the track bar. The abutting sliding block is cooperated with the tooth group to limit the position of the track bar. The invention overcomes the significant disadvantages of the existing detection devices, the efficiency of obtaining qualified test signals is improved by the rapid and accurate height adjustment and test, and the precision and efficiency of high strain detection of a foundation pile are greatly improved.

The invention relates generally to a mechanical device that efficiently measures physical parameters such as compression strength, elasticity, firmness, deformation resistance and the like, on one or a plurality of compressible test objects including fruits, nuts and vegetables, and which operates in a semi-automatic fashion using an indexable turntable linked to one or a plurality of measuring stations capable of independently measuring said physical parameters, employing a controlled gravity assisted test assembly as a means for applying a steady, continuous gravitational force to said compressible test objects while recording said parameters by means of one or a plurality of sensor elements associated with said measuring stations.

The present disclosure relates to a device for detecting a liquid crystal module and a method for detecting the quantity of liquid crystal. The method includes a cover for fixedly accommodating the liquid crystal module. An accommodation space for accommodating collision units is formed between the liquid crystal module and the cover, the collision units being connected to the top wall of the cover through elastic members. The collision units are spaced from the liquid crystal module in a certain distance in a static status, and collide with a panel of the liquid crystal module through vibration of the cover in the vertical direction during detection. The device for detecting a liquid crystal module improves the detection efficiency.

A system and related methodology for inflicting structural impact damage to an article are disclosed. Certain embodiments of the system include: a main support body; a guide tube having a lower end region couplable to the main support body, and having a hollow interior passageway; an adjustable weight assembly receivable and moveable within the hollow interior passageway; an impact tip receivable within an opening formed in a lower end section of the main support body, the impact tip movable within the opening such that an exposed length of the impact tip protrudes outside of the main support body; and a travel-limiting assembly associated with the impact tip. The travel-limiting assembly is adjustable to define a variable maximum penetration depth of the impact tip relative to the article.

A method for traceability calibration of calibration device of rock chiseling specific power tester includes static calibration and dynamic calibration. Static calibration includes: placing impact indicator sensor of calibration device on static calibration stage; installing standard weight holder on adapter head of impact indicator sensor; adding a standard weight to standard weight holder several times; and calculating static coefficient k. Dynamic calibration includes: placing impact indicator sensor on dynamic calibration stage; resetting dynamic calibration coefficients a and b of calibration device; recording standard impact energy W.sub.0 of dynamic standard hammer and measured indication value W of impact indicator sensor to obtain standard deviation S=WW.sub.0; and calculating dynamic coefficients a and b. Rock chiseling specific power magnitude is effectively traced to equal mass standard of standard weights. A new traceability method and system for specific power magnitude is constructed.

The invention relates to a machine for testing cushioning material for packaging, which improves the test method and performs a more precise characterization of cushioning for packaging. The machine is formed by: a load arm (1); a lift motor (2) on the upper part thereof; several guides that connect (i) a rigid platform (6) for positioning the sample to be tested, replaceable by a load cell (6), and (ii) an impact platform comprising sensors (7) for monitoring the position thereof and measuring acceleration during impact; a spindle (4) for moving the load arm; and, on the lower part thereof, a seismic mass (5) for reducing the transmission of the impact.

A device for a creep test and a test system and a method using the device are provided. The device for the creep test includes a device frame, a test piece clamp, a load loading mechanism and linear displacement sensors. A test piece is arranged in a middle of the test piece clamp. A first end of the test piece clamp is a fixed end, a position of the fixed end is unchanged relative to the device frame. A second end of the test piece clamp is a movable end. The load loading mechanism includes a pulley block and a load. A system for a tensile and compressive creep test includes a box body which is sealable. The box body is provided with a box door which is provided with a constant temperature and humidity device. The device for the creep test is arranged in the box body.

A drop test device includes a suspension frame, a delay roller which is placed and mounted on the suspension frame, and at least one suspension cable, a first end of which is connected in a stationary manner to an attachment point on the outer surface of the delay roller and a second end of which includes a mounting which can be releasably or fixedly connected to a drop object.

Provided is a testing apparatus for a display apparatus comprising a base, a hit unit mounted on the base to translate in a first direction, a second direction, and a third direction perpendicular to each other, and a pad unit mounted on the base to rotate around each of a first axis perpendicular to an upper surface of the base and a second axis perpendicular to the first axis, wherein the display apparatus is disposed on the pad unit and includes flat and curved areas.

The invention discloses a buffer product for packaging and an inspection and material selection method therefor. The buffer product for packaging comprises at least one base material layer and at least one buffer layer, wherein the buffer layer comprises a plurality of hollow tubes fixedly arranged on a side surface of the base material layer, and the shape of the hollow tube is a shape capable of generating elasticity. The inspection method for the buffer product for packaging comprises: a. acquiring testing data of a certain number of hollow tubes; b. performing static load-bearing calculation; c. performing dynamic load-bearing calculation; and d. assessing violent handling. In specific application, the extent of deformation and presence of damage can be used as indicators for assessing violent transportation. In addition, degradable materials may be used to realize the buffer structure for packaging provided by the invention, so as to achieve eco-friendliness.