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

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.

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.

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 a three-dimensional structure with a negative Poisson's ratio characteristic, which comprises a plurality of three-dimensional structure units. Each three-dimensional structure unit comprises a four-chiral structure unit and two torsion structure units; the torsion structure unit comprises an upper cross rod, a lower cross rod, an upper inclined rod and a lower inclined rod, the upper cross rod is connected with the upper inclined rod, the lower cross rod is connected with the lower inclined rod, the upper inclined rod is connected with the lower inclined rod, the horizontal projection of the upper inclined rod coincides with the horizontal projection of the lower inclined rod, and an included angle phi is formed by the horizontal projection of the upper cross rod and the horizontal projection of the upper inclined rod; the two torsion structure units are perpendicular to each other; the four-chiral structure unit comprises a circular ring and a connecting rod; one end of the connecting rod is tangent to the circular ring, and the other end of the connecting rod is connected with the connecting point of the upper inclined rod and the lower inclined rod. The invention further relates to a combination method of the three-dimensional structure with the negative Poisson's ratio characteristic. The structure is stable, can achieve the negative Poisson's ratio characteristic in multiple directions, and belongs to the field of automobile safety equipment.

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.

The invention provides a door sealing rubber strip, comprises an integrally formed plug-in part and a sealing part, wherein the side part of the plug-in part is provided with fins, and the sealing part is generally L-shaped, and comprises a vertical end, a horizontal end and an air bag. The bottom of the vertical end is connected with the top end of the plug-in part. The top end is connected withthe one end of the horizontal end, and the top of the horizontal end is inclined upward. The door sealing adhesive strip provided by the invention has simple structure and can solve the problem of inconsistent compression caused by factors such as arc or plane door body deformation.

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.

A server apparatus has a server unit disposed inside a casing via an uninterruptible sliding mechanism. The uninterruptible sliding mechanism includes a discharging track disposed on the casing and an electrically-conducting plate disposed on the server unit. The electrically-conducting plate is slidably assembled with the discharging track. The electrically-conducting plate includes abase, a buckling portion and an elastic piece set. The base is electrically connected to the server unit. The buckling portion is disposed on the base to engage with the discharging track. The elastic piece set is disposed on middle of the base and has at least one elastic unit. The elastic unit is an arc structure. An end of the arc structure is fixed to the base, and the other end of the arc structure abuts against the discharging track to continuously transmit energy output from the discharging track to the server unit via the base.

The invention provides a double-acting hydraulic ejecting type vacuumizing and compressing device of double cylinder and belongs to the technical field of machinery. The double-acting hydraulic ejecting type vacuumizing and compressing device solves the problem that compressing capacity or vacuumizing capacity of an all-in-one machine of a piston type vacuum pump and a piston type air compressor cannot achieve the actual application requirements and comprises a hydraulic cylinder body and two cylinder bodies, wherein the cylinder bodies are respectively connected with two ends of the hydraulic cylinder body, a hydraulic cylinder piston is arranged in the hydraulic cylinder body, a double-extending rod with two ends respectively extending out of the hydraulic cylinder body and entering the cylinder bodies is fixed on the hydraulic cylinder piston, cylinder pistons fixed on corresponding end portions of the double-extending rod are respectively arranged in the two cylinder bodies, and an air inlet valve and an air outlet valve for communicating a cavity of the cylinder are respectively arranged on the end portions of the cylinder bodies on two sides of each cylinder piston. The double-acting hydraulic ejecting type vacuumizing and compressing device can integrate air compressing and vacuumizing, has three functions in one machine and can achieve the requirements for actual using.

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.

The invention relates to an electric shuttle valve of a cam mechanism. A three-way valve body (1) is of a two-position two-way structure, and three holes distributed in an inverted T shape are formed in the three-way valve body (1) and form an inlet and outlets. Flange end covers (5) are fixedly connected to the outlets, and a sealing gland (10) is fixedly connected to the inlet. Valve cores (8) are positioned at the connecting positions of the flange end covers (5) and the three-way valve body (1), and guide rods (7) penetrate through the valve cores (8) and are integrally and fixedly connected with the valve cores (8). A valve rod (18) penetrates through the sealing gland (10), enters into the three-way valve body (1) and is assembled in the three-way valve body (1) through a bearing. An eccentric circular cam is arranged in the middle of the valve rod (18). One end, positioned in the three-way valve body (1), of each guide rod (7) is fixedly connected with a connecting frame (25) through a fixed ring (22), so that the two guide rods (7) is butted against the cam and form an integral link structure. The cam is driven to rotate through the rotation of the valve rod (18), so that the valve cores (8) on one side are far away from the flange end covers (5), and the inlet is communicated with the outlets on one side.

An ultra-high pressure die for a six-sided top diamond synthetic press, consisting of four non-heated top hammers and two heated top hammers, the angle of the sealing slope of the heated top hammer is between 20-47°, and the hammer surface of the non-heated top hammer is heated The linear size ratio between the direction and the non-heating direction is 1:0.8-1:1.3, and the hammer surface of the non-heating anvil is a ridge-shaped surface or a chamfered surface that protrudes 0-5° from both sides of the hammer surface along the heating direction to the center of the hammer surface. The conical table surface of the ridged top, the sealing surface of the non-heated anvil and the heated anvil cooperate to form a sealing angle of -0.5-7°. The non-heated anvil is heated to the sealing surface and the non-heated anvil has a circular arc transition. The matching sealing surface of non-heated anvil and heated anvil is arc surface. A square cone-shaped sealing gasket consisting of two layers of non-metallic sealing bowls sandwiching a layer of metal sealing bowls is arranged between the sealing surfaces of the heated anvil and the non-heated anvil in the ultra-high pressure chamber. Because the heated anvil reduces the cone angle of the pressure, increases the compression stroke, prolongs the synthesis time, and can achieve the synthesis effect of the double-sided pressing machine.

The invention discloses a large-diameter waterproof oil production packer and an operation method thereof. The large-diameter packer and a sealing insertion pipe are characterized in that a hydraulicsealing tool comprises an external hydraulic cylinder, a transition sleeve and a transition central spindle, wherein the hydraulic cylinder is arranged at the upper end of the transition sleeve and isused for separating a sealing pipe column after setting; the transition sleeve sleeves the transition central spindle and is used for connecting a setting anchoring mechanism; the lower end of the transition central spindle is connected with the large-diameter packer; the large-diameter packer comprises a first central pipe, wherein the upper end and the lower end of the first central pipe are respectively provided with a fine slip in the opposite direction; a plurality of rubber barrels are distributed on the first central pipe at intervals; a sealed intubation tube sleeves a second centralpipe and is used for being inserted into the large-diameter packer after successfully releasing the large-diameter packer. The oil production packer can effectively reduce the frequency of unsealing and replacing the packer caused by pump inspection, measure operation and other reasons, can realize one-time treatment in the effective period of the packer, can be repeatedly used in the effective period of the packer, and reduces the isolated production workload and the treatment cost.

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.