9results about How to "Decrease the inclination" patented technology

The invention provides a fin unit, a heat exchange fin and a heat exchanger, and relates to the technical field of heat exchangers. Each fin unit comprises a first bottom plate, a second bottom plate, a first spoiler, a second spoiler, a third spoiler and a fourth spoiler; the first bottom plate, the first spoiler, the second spoiler and the second bottom plate are sequentially connected, the second bottom plate, the third spoiler, the fourth spoiler and the second bottom plate are sequentially connected, and projections of the second spoiler and the third spoiler on a first plane are arranged in a crossed mode. The inclination angle of at least one of the first spoiler, the second spoiler, the third spoiler and the fourth spoiler is smaller than that of the other spoilers, so that fluid can strongly flow on the spoilers with smaller inclination angles in the flowing process of the fluid in the heat exchange fins; therefore, the fluid can impact the tops and the bottoms of the fin units more strongly, and the heat exchange efficiency is improved.

The utility model discloses a kind of silica mortar production sieve powder equipment, comprising: main component, the main component includes outer cylinder, centrifugal cylinder and filter hole;The outer cylinder inside movablely connects centrifugal cylinder, the filter hole is opened in centrifugal cylinder side wall;Scattering component, the scattering component includes trapezoidal receiving seat and semicircular scattering piece, trapezoidal receiving seat is fixedly installed in centrifugal cylinder inner wall, trapezoidal receiving seat front end movablely connects semicircular scattering piece, the scattering component still includes receiving groove, through-hole, cylindrical rod and limit piece.The utility model semicircular scattering piece is subjected to external force under the cooperation of cylindrical rod and through-hole, can realize rotation, and then can drive silica mortar material in rolling process constantly change motion trajectory, so that silica mortar material is scattered, and then can effectively avoid the phenomenon of blockage.

The invention discloses a wind-resistant flexible photovoltaic support structure. The structure comprises a photovoltaic support and a third inhaul cable which are parallel to each other. The photovoltaic support is composed of a photovoltaic assembly supporting frame, a supporting rotating shaft, a seesaw structure, a first inhaul cable and a second inhaul cable. The photovoltaic assembly supporting frame can rotate around the supporting rotating shaft to change the inclination angle. The seesaw structure is connected with the photovoltaic assembly supporting frame through the first inhaul cable and the second inhaul cable, and the third inhaul cable is connected with the seesaw structure of the adjacent photovoltaic support. In addition, the structure further comprises a cross fork and an optional spring or damper so as to limit the distance between the inhaul cables and dissipate energy. According to the invention, a negative feedback mechanism is realized through the seesaw structure, excessive inclination of the photovoltaic panel is prevented, the photovoltaic module is protected from being influenced by excessive torque through the cross, and the wind resistance and stability of the photovoltaic panel are improved.

The invention relates to a composite substrate structure, an epitaxial structure and a preparation method of the composite substrate structure, and the composite substrate structure comprises a patterned substrate which comprises a base layer and a patterned layer, the patterned layer is formed on the upper surface of the base layer, and the patterned layer comprises a plurality of protruding parts; the buffer layer and the undoped semiconductor layer are sequentially laid on the patterned substrate; the thickness of the buffer layer is smaller than the height of the protruding part; the undoped semiconductor layer can completely submerge the buffer layer, the upper surface of the undoped semiconductor layer is provided with a pit matched with the protruding part, and a blocking part is arranged in the pit; the downward projection of the blocking part at least can cover the central area of the protruding part; the blocking part is made of an amorphous material, and the heat conductivity coefficient of the blocking part is lower than that of the undoped semiconductor layer.

This invention relates to the field of bridge engineering technology, and particularly to a beam transport device and system. The beam transport device includes a frame and a wheel assembly connected together, the wheel assembly driving the frame to move. It also includes: a pig frame connected to the frame, the pig frame protruding from both sides of the frame in the direction of travel; auxiliary wheel assemblies connected to the pig frame, at least two auxiliary wheel assemblies distributed on both sides of the frame in the direction of travel, and all auxiliary wheel assemblies located on the outer side of the wheel assembly, the auxiliary wheel assemblies being capable of rolling; a height adjustment component is also provided between the pig frame and the auxiliary wheel assemblies, the height adjustment component driving the auxiliary wheel assemblies to move closer to or further away from the pig frame. This invention, by setting a pig frame on the frame, can increase the lateral dimension of the bearing surface, enabling the beam transport device to transport wider loads; the height adjustment component between the auxiliary wheel assemblies and the pig frame allows adjustment of the distance between the pig frame and the auxiliary wheel assemblies, enabling the beam transport device to adapt to horizontal and sloping road sections.

The utility model relates to the technical field of daylighting panels, in particular to a greenhouse daylighting panel angle adjusting device which comprises a base and is characterized in that two sets of main supporting assemblies are vertically fixed to the upper end of the base, and two sets of auxiliary supporting assemblies are symmetrically arranged on the two sides of the main supporting assemblies in parallel; one end of the main supporting assembly is fixedly connected with the middle of the auxiliary supporting assembly, the upper end of the main supporting assembly is rotationally connected with a daylighting panel, the lower end of the daylighting panel is slidably connected with the upper end of the auxiliary supporting assembly, and an auxiliary assembly is arranged at the upper end of the main supporting assembly and is in contact connection with the daylighting panel. The beneficial effects of the utility model are that the back of the daylighting panel is provided with the guide groove, and when the inclination angle of the daylighting panel is adjusted, the guide rod slides in the guide groove; the height of the daylighting panel is adjusted through the first lifting rod, the device is suitable for greenhouses under different crop conditions, and the overall stability is improved through connection and fixation of the first connecting rod, the second connecting rod and the third connecting rod.

The invention belongs to the technical field of safety vertical rods, and particularly relates to a safety vertical rod and method based on TMD vibration reduction and timely alarming. The safety vertical rod comprises a base which is fixed on the ground; the main vertical rod is arranged on the base; the spring reset system is connected with the base and the main vertical rod and is used for elastically limiting the swinging of the main vertical rod; the TMD damper unit is arranged at the top end of the main vertical rod and used for restraining the swing amplitude of the main vertical rod under the wind load; the telescopic safety belt reel is arranged at the top of the TMD damper unit and used for being connected with a safety belt; and the automatic alarm device is arranged at the top end of the retractable safety belt reel, is in signal connection with the TMD damper unit and is used for alarming. By arranging the TMD damper unit and the spring reset system, the inclination angle of the vertical rod under strong wind is reduced, and the wind resistance of the safe vertical rod is improved.

The application discloses a sand outlet detection device and method of a sand mold 3D printing equipment, and belongs to the field of foundry 3D printing. The device comprises a sand outlet part, and further comprises a visual detection part fixedly connected to the inside of the sand outlet part. The visual detection part comprises two grooves symmetrically arranged on the inner wall of the sand outlet part, a light source and a camera fixedly connected in the two grooves respectively. The lower end of the sand outlet part is connected with a vibration detection part. In the application, the visual detection part converts the sand curtain falling in the sand outlet part into a contrast image with bright contrast through the shielding relationship between the sand and the light source, so that sand outlet detection is realized. The sand passing through the sand outlet part falls on the vibration detection part, the vibration detection part identifies the impact energy through a sensing part, and sand outlet detection is realized through the vibration signal. The two detection modes are used to realize sand outlet detection of the sand outlet, are heterogeneous and redundant, can effectively realize complementation, eliminate the detection blind area, and greatly reduce the false negative rate or false positive rate caused by a single sensor.

The utility model discloses a feeding mechanism of an asynchronous die-cutting machine, and belongs to the field of die-cutting machines. A feeding mechanism of an asynchronous die-cutting machine comprises a die-cutting machine box body, an operation table fixed to the top of the die-cutting machine box body, a die-cutting table fixed to the top of the operation table, clamping frames fixedly connected to the end of the operation table, a material collecting roller rotationally connected between the clamping frames on the two sides, and a movable frame rotating around the side wall of the operation table, an adjusting shaft is rotationally connected to the side wall of the operation table, the movable frames are fixedly connected to the outer wall of the adjusting shaft in a sleeving mode, and a discharging roller is rotationally connected between the movable frames on the two sides; the positioning block slides in the direction perpendicular to the feeding direction; the height of the discharging roller is changed by rotating the movable frames on the two sides, so that the feeding angle of a mold material on the discharging roller is changed, the situation that the mold material is broken due to the fact that the inclination angle of the mold material is too large and the mold material is excessively pulled is avoided, mold material protection is achieved, maintenance time consumed by mold breaking is shortened, and feeding efficiency is improved.