32results about How to "Little vibration" patented technology

A fluid end for a high-pressure pump including a metallic block having a front, back, top, bottom, and opposed sides. The block has a horizontal, plunger passage extending from the front to the back thereof. A horizontal, outlet passage extends from one of the opposed sides of the block to the other with the outlet passage being positioned beneath, and at right angles to, the plunger passage. A suction passage extends vertically downward from the top of the block and intersects the plunger passage to define a pumping chamber at the point of intersection. A discharge passage extends vertically downward from the pumping chamber to the bottom of the block. The discharge passage is located adjacent to the outlet passage. A connector passage extends from the discharge passage to the outlet passage so as to place the discharge passage and outlet passage in fluid communication. A reciprocating plunger assembly is located the end of the plunger passage adjacent the back of the block. A plug is located in the end of the plunger passage adjacent the front of the block. A suction valve is located in the suction passage. A discharge valve is located in the discharge passage. A fluid supply manifold is pivotally secured to the top of the block and is in fluid communication with the suction passage.

An outer peripheral surface of a cam has an apex having a greatest distance from a rotational axis, a first region located on the side of the apex opposite to the direction of rotation and having an increasing distance from the rotational axis with the rotation thereof, and a second region located on the side of the apex in the rotational direction and having a decreasing distance from the rotational axis of the cam with the rotation thereof. The apex is disposed in a position where the phase 0 thereof advances by 15 degrees or more and 55 degrees or less in the rotational direction from a position symmetrical to a center of the pin with respect to the rotational axis. The rate of change in the distance between the second region and the rotational axis is set to be greater than the rate of change in the distance between the first region and the rotational axis. A retreat amount X when a saw blade reaches an uppermost point c from a foremost point is set to be 0.8 mm or more at a lower end of the saw blade.

An electric-motor driven actuator has a housing, in which a motor and a carrier plate are arranged and the carrier plate is connected in a fixed manner to a brush holder. The brush holder has a first brush holder which is rigidly connected to the carrier plate. A second brush holder component is also provided which is mechanically coupled to the first brush holder component and is decoupled in a vibration-neutralizing manner from the first brush holder component via at least one damping element and which holds brushes via which contact can be made with a commutator of the motor.

A multi-direction submersible floating aerator has a gas-ring compressor (4), a base (6), a gas inlet tube (9), a seat (11), multiple submersible hollow shaft motors (13), and multiple propellers (14). The base (6) is disposed between the gas-ring compressor (4) and the gas inlet tube (9). The propeller (14) is coaxially connected to the submersible hollow shaft motor (13). The seat (11) is disposed between the gas inlet tube (9) and the submersible hollow shaft motor (13). The seat (11) is hollow. A first opening is disposed at the top of the seat (11), and multiple second openings are disposed on one side of the seat (11). The seat is (11) used for evenly distributing compressed air. Thus, the aeration is more even and stable, and aeration efficiency is greatly improved.

The invention provides a punching die. The punching die comprises a male die and a female die. The female die is in a cylinder shape. An inner cavity of the female die is a punch travel cavity. The size of the male die is matched with the size of the inner cavity of the female die. The upper end face of the female die is provided with a raw material containing table. A feed mechanism is arranged on the side face of the upper end face of the female die. The feed mechanism and the containing table are horizontally arranged. A shearing face of the containing table on the upper end face of the female die is in a bent face shape. The punching die further comprises a sliding mechanism which is detachably connected with the bottom of the female die. The punching die has the advantages that shearing cotton yarn of the female die is designed into the bent face shape, the aims of conducting material force bearing step by step and conducting punching part by part are achieved, and the requirement for greatly reducing the machine tool tonnage is achieved; cost is saved, the machine tool vibration is not large, and noise is reduced; the die vibration is small, no abnormal sound is generated, the service life of the male die and the female die is prolonged, the quality of the die is improved, and manpower and material resources are reduced.

The invention discloses a step self-adaptive walking method and device. The method comprises the steps of employing a vertical walking mode, replacing a conventional wheel with a plurality of walkingassemblies perpendicular to the base surface of a main bearing body, enabling the walking assemblies to support the main bearing body in a multi-point supporting mode, and enabling the base surface ofthe main bearing body to be always in a horizontal state; and the advancing state of the walking assemblies is completed by a central control unit in a unified and coordinated mode. The walking device mainly comprises a plurality of walking assemblies, the main bearing body and a central control unit, is simple in structure, large in load capacity and stable and reliable in operation, and is suitable for transportation of complex roads including steps, uneven road surfaces and the like under the application environment that the operation speed is not emphasized.

The invention discloses coix seed winnowing equipment. The equipment comprises a base, wherein eight sliding limit columns are symmetrically arranged on the upper end of the base; two supporting seats are symmetrically arranged on upper ends of the eight sliding limit columns; spring dampers are respectively arranged between the supporting seats and the base; a machine body is arranged on upper ends of the two supporting seats jointly; an exhaust fan is clamped in the machine body; the upper end of the exhaust fan penetrates through the machine body; a hanging bar is arranged at the upper end of the exhaust fan; two fixing frames are symmetrically arranged on the machine body; a connecting block is arranged on the two fixing frames jointly; a moving seat is arranged on the two fixing frames jointly in a penetrating manner; the moving seat is in threaded connection a threaded rod; and the upper end of the threaded rod penetrates through the connecting block and is connected with a first motor arranged on the connecting block. The equipment disclosed by the invention has the advantages that the structure is stable; the vibration amplitude is small during work; the exhaust fan is conveniently taken out from the machine body to be maintained; a feeding door body is convenient to open and close; the time and the labor are saved; and the equipment is convenient for staff to operate and is worth popularizing.

The invention discloses a jacking type stamping die. The jacking type stamping die comprises an upper die cover, a lower jacking die, a die removing layer, a punch, supporting arms, connecting rods, ejector pins and ejector assemblies. The upper die cover and the lower jacking die are arranged at the upper end and the lower end of the die removing layer. The punch is vertically arranged at the middle position of the upper die cover and downwards extends into the die removing layer. The supporting arms are arranged on the die removing layer and connected with the corresponding ejector assemblies through the corresponding connecting rods. The ejector assemblies are arranged in the lower jacking die. The ejector pins are vertically arranged in the die removing layer and downwards extend to beconnected with the corresponding ejector assemblies. In this way, the jacking type stamping die is provided with the ejector pins and the ejector assemblies, and the jacking type stamping die has theadvantages that the requirement for the tonnage of a machine tool is greatly lowered, the cost is saved, vibration is not large, noise is reduced, the die vibration is relatively small, no special sound is generated, the service life is prolonged, the quality of the die is improved, and the manpower and material resources are reduced.