46results about How to "Reduce climbing" patented technology

An auto-laundry conveyor of three-tier design using upper, lower and intermediate track rails with a narrow slot between them. Dollies are provided in an endless loop conveyor chain and each dolly comprises a combination of a center link, a pair of reversely similar tire engaging rollers, a pair of reversely similar track engaging rollers outboard of the tire engaging rollers and a pair of reversely similar stabilizing rollers outboard of the track engaging rollers. The stabilizing rollers are effectively larger in diameter; i.e., higher than the track engaging rollers so as to prevent rolling contact between the stabilizing rollers and the track surface and to receive the tread surface of an off-center tire and keep the tread surface from interfering with rolling movement of the track engaging rollers. The conveyor is manufactured in 10-foot lengths except for the entry and exit sections which are of lengths X and Y wherein X plus Y equals 10 feet. An open track structure is used to prevent the accumulation of dirt and debris.

The invention discloses a novel breakwater and a design method thereof. The breakwater is arranged between a foreshore and a backshore, and comprises a foundation bed and a breakwater body, wherein a riverside slope protecting surface of the breakwater body comprises a slope-shaped riverside slope protecting surface and more than two arc-shaped riverside slope protecting surfaces which are connected together in sequence; a riprapping dike dam is arranged between the bottom end of the slope-shaped riverside slope protecting surface and the foreshore, and the top end of the slope-shaped riverside slope protecting surface is connected with the arc-shaped riverside slope protecting surfaces through a platform; and two adjacent arc-shaped riverside slope protecting surfaces are connected through a corner of the platform. Therefore, in the invention, as the riverside slope protecting surface is combined by the arc-shaped slope protecting surfaces and the slope-shaped slope protecting surface through the platform, the rise of waves and the wave overtopping rate of a breakwater top are effectively reduced through the wave breaking function of the arc-shaped slope protecting surfaces and the energy dissipating function of the slope-shaped riverside slope protecting surface; compared with the conventional breakwater, the novel breakwater can meet design requirements under the same condition more effectively based on a lower altitude of the breakwater top under the same design condition.

In a semiconductor photodetector 1 according to the present invention, flat surfaces of three steps with different heights are formed in a top surface portion of a semi-insulating GaAs substrate 2. An n-type GaAs layer 3, an i-type GaAs layer 4, and a p-type GaAs layer 5 are successively deposited on the lower step surface formed in a central region of the semi-insulating GaAs substrate 2. Furthermore, a p-side ohmic electrode 6 is provided astride and above a flat surface formed by the p-type GaAs layer 5 and the upper step surface of the semi-insulating GaAs substrate 2, and an n-side ohmic electrode 7 is provided astride and above a flat surface formed by the n-type GaAs layer 3 and the middle step surface of the semi-insulating GaAs substrate 2.

The invention discloses a circuit board introducing device of a solder-reflow furnace comprising a fixed guide rail (2) fixed to a furnace body brackets (1) at two ends. A conveying chain (3) is arranged in an extending section at the inner side of the fixed guide rail (2). The circuit board introducing device of the solder-reflow furnace is characterized in that an introducing block (4) is arranged at the front end of the conveying chain (3) at the entry of the solder-reflow furnace and provided with a horizontal guide block (41) approaching the upper end of the conveying chain (3). The device is applied to the front end of the conveying chain of the solder-reflow furnace, greatly improves the conveying stability of printed circuit boards and reduces the phenomena of dropping, clamping and climbing of the circuit boards.

The invention relates to a wave type wave-absorbing dam which comprises a stair type dam bottom, a wave type grid wall and a wave-resisting wall, wherein the wave-resisting wall is mounted at the top end of the stair type dam bottom; the wave type grid wall is vertically mounted on the stair surface of the stair type dam bottom; the horizontal cross section of the wave type grid wall is wave-shaped; the wave type grid wall consists of an arced wall at the entrance, an arced wall at the final point and an arced wall in the middle section; the central angle of the arced wall at the entrance is 60 degrees; the central angle of the arced wall in the middle section is 120 degrees; the arced wall at the final point is connected with the wave-resisting wall. Due to the adoption of the stair type dam surface, the functions of roughening the protecting surface and eliminating the energy are achieved, and a part of the wave energy can be eliminated; due to the adoption of a wave type grid wall structure, spindrift and vortexes are formed after water flows into the dam, and then the wave is crushed and collided to achieve the energy elimination function; as the wave type grid wall is combined with the stair type dam surface, the wave entering the grid wall is subjected to dual energy elimination, the wave is prevented from raising high and washing the dam bottom, the coast is prevented from being scoured, and a good coast protection function is achieved.

The invention discloses a multifunctional crane and an emergency rescue fire-fighting truck, and relates to the technical field of engineering machinery. The multifunctional crane and the emergency rescue fire-fighting truck solve the technical problems of high labor intensity and poor safety in the prior art. The multifunctional crane comprises a telescopic arm, a base, a hydraulic pipeline conveying device, a hydraulic tool, a hydraulic oil supply device, a first lifting hook and a second lifting hook, wherein the telescopic arm comprises an external segment arm and an internal segment arm; the internal segment arm can move to an extension position or a retraction position relative to the external segment arm; the first lifting hook and the base are connected with one end, extending out of the external segment arm, of the internal segment arm; the hydraulic tool is detachably and fixedly connected with the base and comprises a hydraulic scissor, a hydraulic percussion drill or a hydraulic gripper; and the second lifting hook is connected with the external segment arm. The emergency rescue fire-fighting truck comprises the multifunctional crane. The emergency rescue fire-fighting truck is used for increasing functions of the multifunctional crane, and the safety of the emergency rescue fire-fighting truck is improved.

The invention provides a swirling flood discharge tunnel for improving the flow state of water, comprising a diversion tunnel, a transition section, a vortex chamber, a vertical shaft, a stilling pool, a water baffle and a diversion tunnel, and the upstream of the transition section is connected with the diversion tunnel, The upstream of the water diversion tunnel is connected with a sluice chamber; the downstream of the transition section is connected with the vortex chamber, the lower end of the vortex chamber is connected with the vertical shaft through the vertical shaft connecting section, the stilling pool is located at the bottom end of the vertical shaft, and the vortex chamber is located at the bottom of the vertical shaft. The diameter is larger than the diameter of the shaft, and the diameter of the shaft is larger than the diameter of the stilling pool; the lower part of the shaft is connected with the diversion hole through the connecting section, and one end of the diversion hole is blocked; the water baffle is arranged at the end of the connecting section. In the present invention, the transition section from the water diversion tunnel to the vortex chamber forms a gradient, which can cause an increase in the velocity of the water flow entering the vortex chamber. The invention changes the flow state through the water baffle at the end of the connecting section, so that the water flow regularly flows into the diversion hole, thus ensuring that the inner wall of the diversion hole will not be eroded by excessive water flow, and improving the service life of the diversion hole.