45results about How to "Helps to move" patented technology

The invention relates to the technical field of teaching instruments and equipment, and discloses a display stand capable of height adjustment for teaching. The display stand includes a stand surface;the left side on the upper surface of the stand surface is fixedly connected to a first baffle plate; the right side on the upper surface of the stand surface is fixedly connected to a second baffleplate; the left and right sides on the lower surface of the stand surface are fixedly connected to telescoping rods; the surfaces of the telescoping rods are sleeved by supporting legs; the centers onthe lower surfaces of the telescoping rods are fixedly connected to connecting blocks; and the lower surfaces of the connecting blocks are fixedly connected to sleeves. The problems that most existing display stands for teaching have definite shapes, single functions and poor use flexibility can be solved; and through the cooperative use between a C-shaped groove and grooves and rotating wheels and arranging rollers on the upper parts of the supporting legs, easy and convenient sliding of the telescoping rods can be realized when the telescoping rods slide in the supporting legs, stabilization of the telescoping rods can be achieved, the shaking of the telescoping rods can be prevented, and therefore, the stability of the display stand can be enhanced.

The invention relates to an apparatus for collecting and screening frozen soil fragments in a Hopkinson test. The apparatus comprises a protective cover which comprises an external layer semicircular protective cover and an internal layer semicircular protective cover by low temperature strong glue bonding; the protective cover is connected to a bracing frame and an internal layer slide plate by a loose-leaf hinge and a positioning pin; air vents are arranged at the lower part of the bracing frame, a channel section is arranged on the bracing frame, and a katathermometer is internally arranged in the bracing frame; a temperature control test box and a protective cover are respectively provided with a pole hole and a rotating wheel hole for a Hopkinson pressure bar and a soil scraping rotating wheel to pass through; the channel, a screw and a support bar are used for connecting the bracing frame and an electric vibrating screen; a control power supply is arranged outside a test box with controllable temperature; a temperature control system is used for controlling the temperature of the test box with controllable temperature. The apparatus can prevent secondary fragmentation of frozen soil fragments, and more frozen soil fragments are collected as possible. The frozen soil fragments are screened and treated at first time after the test, and accuracy of test data is improved.

The invention relates to a cyclone dust removal device, in particular to a cyclone dust removal device for a laser side sweeping machine and a laser film engraving machine. The cyclone dust removal device comprises a cyclone inner barrel, a cyclone outer barrel, an air curtain inner ring and an air curtain outer ring; one end of the cyclone inner barrel is connected with a dust removal pipeline and is used for feeding dust into the dust removal pipeline; the other end of the cyclone inner barrel is connected with one end of the cyclone outer barrel; an air cavity for converting compressed air into cyclone air flow is formed at the joint of the other end of the cyclone inner barrel and the cyclone outer barrel; the other end of the cyclone outer barrel is connected with a compressed air pipeline and is used for receiving the compressed air; the air curtain inner ring is connected with the cyclone outer barrel by an internal screw thread processed inside the air curtain inner ring and is connected with the air curtain outer ring by an external screw thread processed outside the air curtain inner ring; and both the air curtain inner ring and the air curtain outer ring are used for preventing the dust from being diffused. The cyclone dust removal device disclosed by the invention can effectively remove the dust and improve the production efficiency, and is easy to be connected and integrated with the external dust removal pipeline.

The invention relates to a rapid drying method for a cottonwood thick plate, and the method comprises the following steps of: at a preprocessing stage of a cottonwood, sawing the cottonwood to be plates with certain length and thickness according to operating requirements, stacking the plates and placing the plates into preprocessing equipment, then carrying out superheated steam preprocessing, and drying the preprocessed plates according to strengthening benchmark. In the rapid drying method, at the preprocessing stage of the cottonwood, constant-pressure superheated steam with temperatures of 110 DEG C-160 DEG C is used as a processing medium, therefore, not only can smooth and zero-defect of plate surfaces of the processed cottonwood be achieved, but also growth stress of the cottonwood can be released, a water passage inside a wood is opened, initial water ratio of the plates can be substantially reduced. A green wood is preprocessed, water ratio descending ratio is 40%-80%, descending mean value of the water ratio is above 60%,so that a drying stage time in a later period of the cottonwood can be greatly shortened. Compare with the conventional drying method, drying cycle is shortened above one half, energy sources are saved, drying cost is reduced, drying quality is favorable, and the rapid drying method is particularly applicable to cottonwood plates with thickness more than 5.0cm.