35results about How to "Increase compression stroke" patented technology

The invention discloses a piston type air motor, comprising a cylinder body, a piston, a cylinder, a bent axle, a connecting rod, a camshaft, an on-off device, wherein the on-off device is used for controlling an air valve; a cylinder cover is arranged on the cylinder body; inwardly-opened pressure gas inlet valve / outlet valve are arranged on the cylinder cover; an inlet cam and an outlet cam are arranged on the camshaft; the on and off of the inlet valve and the outlet valve is controlled by a rocker arm which is driven by the camshaft, wherein the camshaft is driven by the rotating bent axle via a timing chain or belt, and then high-pressure gas can be controlled to enter the cylinder to promote the reciprocating motion of the piston and to discharge low-pressure gas which completes work; the piston outputs power by driving the bent axle to rotate through the connecting rod. The piston type air motor is characterized in that a suction valve is also arranged on the cylinder cover, a suction cam is also arranged on the camshaft, the on and off of the suction valve is controlled by the rocker arm so as to control the timing for the cylinder to suck and close the air outside, and the ratio of the diameters of the cylinder to the piston stroke is 1:2-15, most preferably 1:10.

The invention relates to the field of automobile clutches and aims to provides a clutch master cylinder which comprises a pump body, a piston, a reset spring and a push rod, wherein the reset spring is used for resetting the piston; the front end of the push rod stretches into the pump body, so as to push the piston; a pressure cavity is formed by the front end of the piston and the pump body; an annular groove is formed in a side wall of the piston; a liquid feeding cavity is formed between the annular groove and a side wall of the pump body; a liquid inlet hole communicated with the liquid feeding cavity and a liquid outlet hole communicated with the pressure cavity are formed in the pump body; a liquid passing through hole communicated with the liquid inlet hole is formed in one end of the pump body; if a clutch pedal is not trampled, the piston is in an initial position; the other end of the liquid passing through hole is communicated with the pressure cavity. When the clutch master cylinder works, the pressure of the liquid outlet hole is easy to establish, and the pressure cavity is backfilled with hydraulic oil faster.

The invention discloses a cabinet door structure which is used for driving a movable door mounted on a cabinet body. The cabinet door structure comprises a drive unit and a friction wheel, and the friction wheel is connected with the movable door in an abutting mode and is driven by the drive unit to drive the movable door to move. According to the cabinet door structure, the friction wheel is connected with the movable door in an abutting mode, friction exists between the friction wheel and the movable door, and when the friction wheel is driven by the drive unit, the friction between the friction wheel and the movable door can drive the movable door to move; and the cabinet door structure is simple in structure, less in parts, low in cost, easy to install and disassemble, and stable in operation.

The invention relates to an elastomer structure which is combined with an inner retaining body, an outer retaining body and an actuating elastomer. The inner retaining body and the outer retaining body are provided with holding spaces and retaining edges on the inside of a pressed surface; the actuating elastomer is arranged in the holding spaces of the inner retaining body and the outer retaining body; a pressure releasing part is arranged between the pressure resisting surfaces of an inner edge end and an outer edge end; the pressure releasing part provides the compressed actuating spaces for the inner retaining body, the outer retaining body and the actuating elastomer, provides a compression deformation holding space as well as utilizes the pressure releasing part of the actuating elastomer to lead the actuating elastomer to absorb the pressure and simultaneously store a recovery elastic force; the elastomer structure of the invention utilizes the retaining edges of the inner retaining body and the outer retaining body to limit the pressure resisting surfaces of the inner edge end and the outer edge end of the actuating elastomer as well as improve the elastic load of the elastomer structure; besides, the pressure resisting surface of the outer edge end of the actuating elastomer of the elastomer structure is led to be limited by the outer retaining body and the inner edge end of the actuating elastomer is formed with the pressed surface according to the different demand of the elastic load; besides, both the inner edge end and the outer edge end of the actuating elastomer of the elastomer structure can be formed with the pressed surface as well.

The invention provides a portable device for detecting flaws of a straight pipe and a bent pipe of high pressure manifold. The portable device comprises a first detection semi-ring, the side wall of the first detection semi-ring is uniformly provided with multiple first radial through-holes along the circumferential direction, a first pushing mechanism having the elastic expansion function is arranged at the first radial through-holes, the inner end of the first pushing mechanism stretches out of the inner side of the first detection semi-ring and then is connected to a first sensor box, and a first metal magnetic memory detection sensor is arranged on the first sensor box; the portable device also comprises a second detection semi-ring, the side wall of the second detection semi-ring is uniformly provided with multiple second radial through-holes along the circumferential direction, a second pushing mechanism having the elastic expansion function is arranged at the second radial through-holes, the inner end of the second pushing mechanism stretches out of the inner side of the second detection semi-ring and then is connected to a second sensor box, and a second metal magnetic memory detection sensor is arranged on the second sensor box; and first ends of the first detection semi-ring and the second detection semi-ring are oppositely hinged by a hinge mechanism and second ends of the first detection semi-ring and the second detection semi-ring are separably connected by a self-locking mechanism so that a ring structure is formed.

A natural gas hydraulic compression cylinder comprises a compression cylinder shell. A gas inlet and outlet opening is formed in the upper end of the compression cylinder shell, and a liquid inlet and outlet opening is formed in the lower end of the compression cylinder shell. An inner cavity of the compression cylinder shell is in sliding fit with a vertically-moving movable separation plate used for isolating a gas medium from a liquid medium. The inner cavity of the compression cylinder shell is divided by the movable separation plate into a gas compression cavity and a liquid expansion cavity. The volume of the gas compression cavity and the volume of the liquid expansion cavity relatively change along with vertical movement of the movable separation plate. When hydraulic oil injected in the compression cylinder compresses natural gas, the two media are not in contact, the phenomenon that the oil and the gas are mixed is avoided, the purity of the compressed natural gas can be improved, environment pollution can be avoided, and the safety of the work environment is improved.

The invention relates to the technical field of forming equipment, in particular to a thermal static-pressure forming device. The device comprises a pressurization mechanism, a mold, a heating mechanism and a heat insulated box. Pulley assemblies distributed in bilateral symmetry are included in the pressurization mechanism. Multiple weights, a weight bearing plate, a pulley set and fixed pulleysare included in each pulley assembly. A pulley set moving assembly and a pulley set fixed assembly are sequentially arranged in each pulley set from inside to outside. Under gravity device of the weights, thin steel wire ropes drive the assemblies and the fixed pulleys, and an upper pressure plate is driven to move downwards. In the mold, a mold upper press plate and multiple long-strip-shaped side plates are detachably connected in a sealed manner to form a closed box body, the mold is mounted at the center position of the cylinder of a heating furnace, and the heating furnace is transverselyplaced in the heat insulated box. According to the thermal static-pressure forming device, through application of the pulley sets, the pulleys are prevented from getting stuck, power is provided by increasing or decreasing the number of the weights to achieve constant pressurization, stability and accuracy of drive force are improved, and therefore the pressurization pressure value is accuratelycontrolled, and the quality of formed products can be improved easily.

The invention discloses an automatic dispenser for air-based tear gas bomb and relates to the technical field of security and protection. The automatic dispenser for the air-based tear gas bomb solves the problems that the existing rifle-hand tear gas bomb dispensing is incapable of precisely shooting to an appointed position and not obvious in subduing effect. The automatic dispenser comprises a multi-rotor aircraft, a connecting platform, a pull ring fixing fine-adjustment mechanism, a gas bomb, a gas dispensing mechanism, a main control board, a data transmission module, a power supply module, a Beidou satellite locating system, an air pressure gauge, a hand-held ground controller, a camera and a damper; the gas dispensing mechanism is fixed on the multi-rotor aircraft through the connecting platform, and the connecting platform is connected with the bottom of the multi-rotor aircraft through the damper. The automatic dispenser for the air-based tear gas bomb realizes to automatically dispense tear gas at some part in the air; the automatic dispenser for the air-based tear gas bomb is simple in structure, convenient to operate and strong in practicability.

A magneto-rheological engine connecting rod belongs to the technical field of automobile engines. The rod body between the connecting rod big end and the connecting rod small end of the engine connecting rod adopts a sealed and hollow telescopic sleeve, and magnetorheological fluid is housed in the sleeve. During the compression process, the connecting rod uses the downward inertia during compression and the pressure of the magneto-rheological fluid in the sleeve to extend the sleeve of the connecting rod, and the compression ratio can be adjusted by controlling the pressure of the magnetorheological fluid; The outflow and pressure of the magnetorheological fluid shorten the sleeve, and the magnetorheological phenomenon ensures the strength of the connecting rod required for workmanship. Through the increase or decrease of magnetorheological fluid and magnetorheological phenomenon, the compression stroke and working stroke are changed and the compression ratio is adjusted, so as to reduce unnecessary impact and wear during the working process of the engine, and achieve the effects of shock absorption and noise reduction. This type of engine connecting rod can directly achieve shock absorption and noise reduction, which is superior to traditional casting connecting rods and can improve engine performance.

The invention discloses a compression assembly with a bolt-like rotor for a compressor. The compression assembly comprises the rotor and two symmetrical star wheels, wherein the two star wheels are respectively meshed on the two sides of the rotor; each star wheel is provided with eleven star wheel teeth; the diameter of the rotor is gradually reduced from an air inlet end to an air outlet end at first, and then, the rotor is cylindrical; the rotor is provided with eight compression slots, and each compression slot is spiral along the outer wall of the rotor from the air inlet end to the air outlet end of the rotor; and the radius of the external circle of the compression slot at the air inlet end is larger than the radius of the external circle of the compression slot at the air outlet end, and the depths of the compression slots are equal. When the star wheels and the rotor are in a working meshing state, the four star wheel teeth on each star wheel are meshed with the compression slots in the rotor. According to the technical scheme of the compression assembly, the star wheels with the same size and structure are adopted, and under the condition of the same center distance, the star wheel teeth, meshed with the rotor, increase, and the compression stroke is enhanced, so that the base capacitor volume and the compression ratio of the compressor are respectively enhanced by about 1.88 times and 1.48 times.