49results about How to "Reduce blocking area" patented technology

The invention relates to a central motor for an electric power-assisted bicycle. The central motor comprises a shell and a radiating net. The top end of the shell is connected with a top cover. Fastening bolts are installed on the surfaces of the front end and the rear end of the top cover. A first shaft rod is inserted into the top cover in a penetrating manner. The bottom end of the first shaftrod is connected with a lantern ring located under the shell. The heat dissipation net is embedded in the outer surface of the bottom of the shell. A first notch is formed in the surface of a carryingplate. An inner plate is installed in the carrying plate. A protruding rod is welded to the lower surface of the carrying plate. A groove is formed in the upper surface of the bottom plate. A third through hole corresponding to the first through hole in position is formed in the inner side of a second notch. The diameter of the first through hole is the same as that of the third through hole. According to the invention, it is convenient to disassemble the central motor and maintain internal parts, heat dissipation is convenient, and the bearing plate is high in rigidity and convenient to use.

The invention discloses a combined type longitudinal finned pipe fume waste heat exchanger, belongs to a heat exchanger, and especially relates to a heat exchanger used for fume waste heat utilization. According to the combined type longitudinal finned pipe fume waste heat exchanger, the two ends of a rectangular solid heat exchanger shell are provided with a fume inlet and a fume outlet, and the shell is internally provided with a pipe bundle composed of longitudinal finned pipes. The combined type longitudinal finned pipe fume waste heat exchanger is characterized in that a water inlet main pipe and a water outlet main pipe communicated with inner pipes of the longitudinal finned pipes are positioned at the outer side of the shell, and the longitudinal finned pipes are combined type longitudinal finned pipes that steel pipes are sleeved in aluminium longitudinal finned pipes. The longitudinal finned pipe design that steel pipes are in expansion fit with aluminium longitudinal finned pipes, the heat exchanger has the advantages that the structure is compact, the resistance is small, the cleaning is easy, a pipe side can resist high pressure and resist ablation; the main pipe is arrange externally, the volume of the heat exchanger is reduced, the space in the heat exchanger is fully utilized, and the heat exchanger is easy to overhaul; and an ellipse diversion pipe is adopted, the fume blocking area is reduced on the condition that the flow of the pipe side is not reduced; the fume fully contacts with fins and the resisting force is reduced.

The invention provides a radar early warning system and a barrier gate, belonging to the technical field of barrier gates, including: a support column, a drive motor, a barrier gate telescopic rod, a negative pressure cylinder, a solenoid valve, an alarm module, a radar module, a position sensing module and a control module; when the position sensing module senses that the card is in the sensing area and the radar module monitors the speed of the vehicle, the radar module outputs a monitoring signal and transmits it to the control module, and the control module controls the drive The motor and the solenoid valve act and control the alarm module to alarm. During the process of driving the telescopic rod of the barrier gate to rise, the telescopic rod of the barrier gate shrinks at the same time, reducing the collision between the vehicle and the telescopic rod of the barrier gate; Under the action of internal negative pressure, it shrinks, thereby reducing the length of the barrier gate telescopic rod, which is convenient for reducing the resistance torque of the drive motor electric barrier gate telescopic rod, so that the drive motor can quickly raise the barrier gate telescopic rod.

The invention relates to a pipeline part, and in particular relates to a copper plastic compound pipe. The invention provides a copper plastic compound pipe which is provided with a first open end and a second open end. The copper plastic compound pipe comprises a copper pipe layer and a plastic pipe layer positioned at the interior of the copper pipe layer, and the part, positioned at the first open end, of the plastic pipe layer radially packages the end of the copper pipe layer so as to form a package part; the radial edge of the package part forms a reentry which extends toward the second open end, and the inner wall of the reentry is fitly fixed on the outer wall of the copper pipe layer; and the inner wall of the reentry is fitly fixed on the outer wall of the copper pipe layer so as to prevent the copper pipe layer of the molded copper plastic compound pipe from shifting axially, so that the fixed effect is good, thereby preventing the leakage caused by the looseness of the copper pipe layer and the plastic pipe layer.

A LiDAR sensing device including: a sensing light source unit configured to radiate sensing light; a light transmitting reflector configured to reflect the sensing light radiated from the sensing light source unit; a scanner unit configured to reflect the sensing light reflected from the light transmitting reflector into a target, and to reflect incident light reflected from the target; a light receiving lens configured to pass the incident light reflected from the scanner unit, and integrated with the light transmitting reflector; a light receiving reflector configured to reflect the incident light passing through the light receiving lens; and an optical detecting unit into which the incident light reflected from the light receiving reflector is incident.