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

A free-piston engine has a stepped piston having a larger end face thereof guided in the compression cylinder, and a smaller end face in the work cylinder. Both the work cylinder and the compression cylinder are connected with a common high-pressure accumulator for initiating the compression stroke or for charging during the expansion stroke.

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.

An ultrahigh-pressure die set for the diamond synthesizing press by pressing in six directions is composed of 4 non-heating pressing hammers, 2 heating pressing hammers and several sealing pads used for the gap between adjacent pressing hammers. The size parameters and relative position parameters of said hammers are also disclosed.

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 discloses a vehicle suspension system and an automobile having the same. The vehicle suspension system comprises an integral rear axle, a body longitudinal beam, a limit block and a buffer block. The body longitudinal beam and the integral rear axle are spaced in the vertical direction and the distance between the body longitudinal beam and the integral rear axle in the vertical direction can be adjusted; the limit block is arranged on the integral rear axle and the upper end face of the limit block is spaced with the body longitudinal beam; the buffer block is arranged on the body longitudinal beam and arranged in a staggered manner relative to the limit block in the horizontal direction; the buffer block is spaced with the integral rear axle; the vertical distance between the lower end face of the limit block and the upper surface of the integral rear axle is less than the vertical distance between the upper end face of the limit block and the lower surface of the body longitudinal beam. According to the embodiment of the invention, the compression stroke is increased, the buffer time is prolonged, the impact is small, and therefore the comfort of the vehicle is improved. The overall sulfurized size of the limit block can be decreased, the number of manufactured cavity dies is increased, the manufacturing process is simplified and the production efficiency is improved.

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 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 discloses a long rubber barrel packer for oil field water exclusion production. The long rubber barrel packer at least comprises a central pipe, wherein the upper end of the central pipe is connected with an upper connector and the lower end of the central pipe is connected with a lower connector; a connecting sleeve, a connector, a spring seat sleeve, a middle rubber barrel assembly and a sliding sleeve sleeves the central pipe in sequence from top to bottom; the upper end of the connecting sleeve is connected with the upper connector and the lower end of the connecting sleeve is connected with the upper end of the connector; the inner circular surface of the lower end of the connector is connected with a piston switch; the outer circular surface of the lower end of the connector is connected with the upper end of the spring seat sleeve; the lower end of the spring seat sleeve is connected with the upper end of the middle rubber barrel assembly; the lower end of the middle rubber barrel assembly is connected with a sliding sleeve; the lower connector is internally provided with a positioning step; the positioning step is fixedly provided with a ball seat through an unpacking shear pin; the packer is combined with an oil field rod type oil pump oil production technology, and seat packing and production can be realized through a one-trip string; meanwhile, unpacking fishing can be carried out by lifting a pipe column and an expansion type packer is applied to the water exclusion production for the first time; the long rubber barrel packer has a longer effective packing surface and the packing success rate is improved.

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.

A resilient structure includes an inner blocking unit, an outer blocking unit, and an elastomer unit. A pressured section is disposed on an outer surface of the inner blocking unit. A securing portion is disposed on an inner surface of the pressured section. Another pressured section is disposed on an outer surface of the outer blocking unit. Another securing portion is disposed on an inner surface of the pressured section. Pressure resisting sections are respectively disposed on an inner and an outer end of the elastomer unit. The pressure resisting sections are respectively confined by the securing portions disposed on the blocking units. A pressure-release portion is formed between the pressure resisting sections of the elastomer unit. The pressure-release portion absorbs pressure and store resilient force for elastic recovery.

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 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.

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 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.

The invention provides a door cover damping device, a door cover assembly and a washing machine. The door cover damping device comprises a transmission assembly and a linear damper, wherein the transmission assembly comprises a rotary part and a movable part; when the rotary part rotates, the movable part is driven by a transmission structure to axially and linearly move in the axial direction ofthe rotary part; the linear damper is located on one side of the axial direction of the rotary part and linearly moves between the linear damper and the rotary part; when the movable part moves underdriving of the rotary part, the linear damper can be triggered; when the linear damper is triggered, a pushing force is applied to the movable part, and when the movable part is pushed by the pushingforce, the transmission structure transmits torque which prevents the rotary part from continuing to rotate. According to the door cover damping device, the linear damper, the rotary part and the movable part form series assembly which is generally arranged along a straight line in an arrangement mode, the width of a product is small, the compression stroke of the transmission assembly on the linear damper is large, and the purpose of improving both the use experience and safety of equipment can be achieved.

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 rear damping structure of a large-displacement pedal motorcycle, which comprises a frame and is characterized in that a rear shock absorber which is transversely arranged along the front-back direction of the frame is arranged below the left side or / and the right side of the frame, one end of the rear shock absorber is hinged with the front part of the frame, and a cradle is arranged at the rear part of the frame. The cradle is provided with a triangular connecting plate, the triangular connecting plate is hinged to the other end of the rear shock absorber, a connecting rod is further hinged to the triangular connecting plate, and the lower end of the connecting rod is hinged to a rear wheel train of the motorcycle. Wherein the projections of the frame connecting point A, the rear shock absorber connecting point B and the connecting rod connecting point C on the cradle in the same vertical plane parallel to the vehicle body are triangular. The structure has the beneficial effects that the stability of the whole vehicle is improved, the structure is beneficial to increasing the rear shock absorption compression stroke and improving the comfort of the whole vehicle, a single shock absorption structure can be adopted, the cost is reduced, and high strength is kept.