6results about How to "Inhibition height" patented technology

A water-saving coal mining method based on coal seam stratified mining, the steps include determining the upper stratified mining thickness, drilling and observing the thickness of each rock layer overlying the coal seam before coal seam mining, observing the thickness of the rock layer overlying the coal seam after a crushing expansion and the crushing expansion coefficient of each rock layer, and observing the range of the upper stratified mining caving zone of the coal seam through drilling, injecting cement slurry into the caving zone of the upper stratified coal seam underground in the coal mine to reinforce and form a lining layer, and freezing after determining the main freezing layer position, freezing temperature and freezing thickness, and finally mining the lower stratified coal seam, and thawing the frozen in the pressure range of each coal mining range when the remaining time workload of coal seam mining is completed, until the mining of the lower stratified resources of the coal seam is completed. The present invention protects static water, improves the water-saving coal mining effect, does not reduce the thickness of stratified mining, improves the recovery rate of coal resource mining, and has a small grouting workload, which is simple and easy to implement.

The utility model discloses an adjustable tray structure and a cabinet, and belongs to the technical field of cabinets. The tray structure comprises a tray body and a plurality of adjusting assemblies. The tray body is provided with a plurality of inclined kidney-shaped holes which are arranged at intervals, a fixing bolt is movably inserted into each inclined kidney-shaped hole, and the fixing bolts are used for being inserted into a stand column of the cabinet; the plurality of adjusting assemblies are arranged at intervals, each adjusting assembly comprises a positioning nut and an adjusting bolt, the positioning nut is used for being fixed to a stand column of the cabinet, the adjusting bolt is inserted into the positioning nut, and one end of each adjusting bolt is used for abutting against the tray body so as to drive the tray body to ascend or descend along the stand column of the cabinet. According to the adjustable tray structure provided by the embodiment of the utility model, the height of the tray body can be conveniently adjusted, so that the problem that an operator adjusts the height of the tray body by inserting the tray for many times is avoided, and the installation efficiency of electrical equipment is improved.

The present invention relates to the field of mahjong machine manufacturing. A mahjong machine comprises a mainframe, a central control panel assembly arranged in the mainframe, a shuffling plate, and four sets of card picking and transporting systems arranged around the shuffling plate; the card picking and transporting systems each comprise a card feeding mechanism, a card stacking assembly, a card pushing assembly, and a ramp card discharging device; the ramp card discharging device comprises a card storage slot and a card lifting bracket; the card storage slot is in a "C" shape, and the card feeding mechanism, the card loading assembly, and the card lifting assembly are in the "C"-shaped opening of the card storage slot; the mahjong cards are arranged in a reverse "G"-shaped path after the card feeding process, the card stacking process, the card pushing process, and the card loading process. The mahjong machine optimizes the internal space design of the mahjong machine and improves the space utilization rate.

The application provides a large-bandwidth filter with high adjacent band rejection, which forms multiple narrow-band rejection curves in a wide frequency band range that needs to be rejected by designing stepped band-stop filter units with different film thicknesses, and then uses an LC matching network to connect the multiple stepped band-stop filter units in series to form a large-bandwidth and extremely deep rejection curve, and when the matching network is a series inductor, the series inductor works with a series resonator, so that the series resonance point of the series resonator is shifted to the outside of the stop band, thereby reducing the interference on the stop band and reducing the peak in the stop band rejection, and finally connecting a hybrid resonant network to a parallel branch to form an extremely deep zero point at a low frequency point.

The present invention provides a molding device and the molding device, when a skin material is attached to a base material having a bottomed hole tear line groove, a portion that is raised to an outer surface side and appears to be poor in appearance is not generated. In order to solve the above problem, the present invention provides a molding device 5 that molds a vehicle interior part (an instrument panel 1) including a base material 8 that forms a bottomed hole tear line groove 4 that becomes a weak portion when an airbag 2 is inflated and a skin material 9 that is attached to a surface of the base material 8, and that forms a protruding portion 15 that protrudes from a back surface in the vicinity of the tear line groove 4, the molding device 5 including: a first mold (a lower mold 6) that has a recessed portion 16 at a portion corresponding to the protruding portion 15 to set the base material 8 in a manner that the protruding portion 15 is fitted into the recessed portion 16; and a second mold (an upper mold 7) that presses and attaches the skin material 9 that is disposed on the surface of the base material 8 to the base material 8.