146results about How to "Large swing angle" patented technology

The invention discloses a ray pectoral fin-imitated piezoelectric coupling propulsive mechanism. The ray pectoral fin-imitated piezoelectric coupling propulsive mechanism comprises a crankshaft, guide rods, a swinging block, a piezoelectric compound fin, a fish body pedestal, a crankshaft support, a driving motor, a battery pack and a main control panel, wherein the crankshaft is arranged on the crankshaft support; the swinging block comprises a pin shaft and a swinging block support; the pin shaft is arranged on the swinging block support; the crankshaft support and the swinging block support are fixedly arranged on the fish body pedestal; one of the guide rods is arranged between one end of the swinging block and the crankshaft; the driving motor and the crankshaft are connected through a gear; the piezoelectric compound fin is arranged at the other end of the swinging block; the battery pack can provide a direct current power source; the main control panel is electrically connected with the piezoelectric compound fin; the crankshaft is a four-turn crankshaft; the guide rod is arranged on each turning shaft of the four-turn crankshaft. The ray pectoral fin-imitated piezoelectric coupling propulsive mechanism can reduce the structural size, the weight of the fish body, and can realize chordwise fluctuation propulsion.

The invention relates to an associated movement-free parallel three-axis spindle head structure and belongs to the field of numerically controlled lathes. The structure comprises a dynamic platform, a static platform, a first branch mechanism, a second branch mechanism and a third branch mechanism, wherein the dynamic platform and the static platform are used for mounting a spindle, and the first branch mechanism; the second branch mechanism and the third branch mechanism are used for connecting the dynamic platform and the static platform. The first branch mechanism comprises a first input piece, a first connecting piece, a sliding pair and two turning pairs. The second branch mechanism comprises a second input piece, a second connecting piece, a sliding pair and two turning pairs. The second branch mechanism comprises a third input piece, a third connecting piece, a sliding pair and two spherical hinges or Hook hinges. The sliding pairs of the three branch mechanisms are under drive. The structure realizes rotation without associated movement and contributes to high-precision measurement, thereby achieving high precision. And the structure has the characteristics of high rigidity, low motion mass, high dynamic performance, simple structure, low cost, easy manufacture, relatively high flexibility, contribution to track planning and control, and the like.

A movable pulley traction connecting device used for inclined drift transportation heavy equipment is composed of an auxiliary transport cart and a movable pulley unit which is arranged on the upper portion of the auxiliary transport cart and hinged to the auxiliary transport cart, wherein a connecting hole is formed in a connecting plate at the rear end of a pulley frame of the movable pulley unit, the front end of the pulley frame is composed of an upper supporting plate and a lower supporting plate, a mandrel is arranged in a shaft hole of the pulley frame, a stop collar, a rope sheave and a thrust bearing are sequential arranged between the upper supporting plate of the pulley frame and the lower supporting plate of the pulley frame in series from top to bottom, the rope sheave can rotate around the mandrel between the upper supporting plate of the pulley frame and the lower supporting plate of the pulley frame, rope blocking rollers are arranged on the left side of the pulley frame and the right side of the pulley frame respectively, and rope supporting rollers are arranged on the left side of the front end of the pulley frame and the right side of the front end of the pulley frame in an inclined mode respectively. When the movable pulley traction connecting device is used for the inclined drift transportation heavy equipment, a steel wire rope is twined on the rope sheave through a rope groove, rope ends are fixed near a winch, the connecting hole in the rear end of the pulley frame is used for being connected with a heavily loaded vehicle, therefore, the transportation capacity of the winch is doubled, and the whole machine transportation requirement for some heavy equipment can be met.

The invention relates to an offshore floating body type suspended oscillating wave power generation device which comprises a mother ship and a water chamber arranged on the mother ship. A water chamber opening is formed in one end of the mother ship. The offshore floating body type suspended oscillating wave power generation device is characterized in that an oscillating assembly adjustable in center of gravity is arranged in the water chamber; the power generation device further comprises a vibration damping plate and a power generation control assembly; the vibration damping plate is connected with the another end of the mother ship; an upright column is arranged on the vibration damping plate; the bottom end of the upright column is fixed at the sea bottom; the power generation control assembly is connected with the oscillating assembly. Compared with the prior art, the offshore floating body type suspended oscillating wave power generation device is capable of floating offshore to collect wave energy, and the parameters of the device can be adjusted according to the wave working conditions within a certain range so that the energy conversion efficiency can be improved; besides, the device is low in site selection limitation, flexible, and excellent in adjustability.

The invention discloses a duct piece reshipment device for a shield tunnel, comprising a walking trolley (3) arranged on a walking pathway (2), a drive mechanism used for driving the walking trolley (3) to move along the walking pathway (2), and a grabbing mechanism (4) capable of moving up and down, wherein the walking pathway (2) is arranged in a shield tunnel with a small diameter; the lower end of the grabbing mechanism (4) capable of moving up and down is connected with a duct piece (7) to be reshipped, and the upper end of the grabbing mechanism (4) is connected with the walking trolley (3). Due to rapid reshipment speed and high working efficiency, the duct piece reshipment device is particularly applicable to the shield tunnel with a small diameter.

The invention discloses a novel axial plunger pump. According to the technical scheme, the novel axial plunger pump is characterized by comprising an end cover, a front shell, a pump shaft arranged inside the front shell, a rear shell, a swash plate and a cylinder, wherein the swash plate and the cylinder are installed inside the rear shell; the end cover, the front shell, the rear shell and the cylinder are sequentially and fixedly connected, and the swash plate is connected to the end, back on to the shell, of the pump shaft; a cross-shaped swinging plate and a plunger assembly are further arranged inside a plunger pump; a plunger hole, a valve hole, a pressing-out valve set and a pressing-in valve set are arranged inside the cylinder, the pressing-out valve set and the pressing-in valve set are located in the valve hole, one end of the plunger assembly is embedded in the plunger hole, and the other end of the plunger assembly is connected with the cross-shaped swinging plate; the cross-shaped swinging plate abuts against the swash plate in a contact manner; and due to the fact that in the prior art a retainer plate and a piston shoe are embedded into a whole through a piston shoe plate, and the piston shoe and the a plunger bulb are embedded into a whole through the piston shoe plate, lateral force of the cylinder and a plunger base is decreased, meanwhile, the tilt angle of the swash plate is increased, the return distance of the plunger base is enlarged, displacement of the plunger pump is improved, the efficiency of the plunger pump is improved, and the design of the cylinder is further simplified.

The invention discloses an underwater oscillating propeller which comprises an end cover fixed on the sealed cavity of an underwater robot, a propeller driving cavity, a propeller blade, a fixing rack with a round hole, a worm and gear box, a worm and gear driving motor, an oscillating output shaft, an oscillating shaft, two rolling bearings, two nylon bevel gears and two angular-contact ball bearings. The motor drives a worm and gear, and the rotating motion of an oscillating output shaft along an axial line is converted by a bevel gear pair to be horizontal oscillation of the propeller driving cavity through the oscillating shaft, so that the propeller can oscillate to provide a pushing force in the oscillating direction for the underwater robot. According to the invention, the integral oscillating propellers are adopted, the propellers require no additional transmission, the transmission loss is small, the high rotation-advancement efficiency of the propeller can be ensured, the angle of oscillation is larger, the structure is simple, and the mounting, maintenance and operation are reliable.

The invention discloses an arm type four-wheeled cross-country forklift. The arm type four-wheeled cross-country forklift comprises a forklift body and a forklift system, wherein the forklift system is mounted on the forklift body, and comprises a cargo fork, a sliding power device, a sliding driving device, a swinging power device and a swinging driving device; the sliding power device is used for driving the cargo fork to slide back and forth along a rail through the sliding driving device, so that the cargo fork is lifted up or put down; the swinging power device is used for driving the cargo fork to swing through the swinging driving device so that the inclined angle, relative to the horizontal plane, of the cargo fork is adjusted. The arm type four-wheeled cross-country forklift has the beneficial effects that the swinging range of the cargo fork is large and the tail end of the cargo fork is upwards raised, so that cargoes are prevented from falling from the cargo fork; the trafficability characteristic in the vertical direction is good; two wheels or four wheels are used so that the road surface trafficability characteristic is improved.

The invention discloses a novel axial plunger pump which comprises an end cover, a front shell, a rear shell, a pump shaft, a port plate, a swash plate and a cylinder block. The swash plate and the cylinder block are mounted in the rear shell. A cross-shaped wobble plate and plunger components are arranged in a plunger pump body. Plunger holes are formed in the cylinder block. One end of each plunger component is embedded in the corresponding plunger hole, and the other end of each plunger component is connected with the cross-shaped wobble plate. The cross-shaped wobble plate abuts against the swash plate. The cross-shaped wobble plate comprises an inner wobble plate body and an outer wobble plate body. The inner wobble plate body is rotatably connected with the outer wobble plate body through an inner wobble plate body fixing sleeve. The outer wobble plate body is rotatably connected with the cylinder block through an outer wobble plate body fixing sleeve. Sliding shoe holes are formed in the inner wobble plate body. Sliding shoes are connected with the plunger components and can move in a reciprocating mode in the axial direction of the cross-shaped wobble plate. According to a sliding shoe disc of the novel axial plunger pump, a return stroke disc and the sliding shoes in the prior art are embedded together and the sliding shoes and plunger balls in the prior art are embedded together; the radial force of the cylinder block and a plunger base is reduced, and friction loss of the plunger holes is avoided. Meanwhile, the tilt angle of the swash plate is increased, the return stroke distance of the plunger base can be conveniently increased, and the displacement of the plunger pump is improved.

The invention discloses a liquid crystal display support convenient to install. The liquid crystal display support convenient to install comprises a base of a crossed structure, bosses are installed at four corners of the base separately, and a crossed sliding groove is formed in the top of the base. A first sliding block and a second sliding block are installed in the sliding groove in a slidingmode, a first fixing column is installed at the top of the first sliding block, a second fixing column is installed at the top of the second sliding block, a second bottom plate in a strip shape is arranged above the base, and cylindrical fixing seats are installed at the two ends of the bottom of the second bottom plate correspondingly. Round rotating grooves are formed in the bottoms of the twofixing seats correspondingly, the first fixing column and the second fixing column are rotationally sleeved with the two rotating grooves separately, and an adjusting rod is rotationally inserted in the top of the second bottom plate, and a knob is installed at the bottom end of the adjusting rod. By means of the liquid crystal display support convenient to install, the placement angle and heightof a liquid crystal display can be conveniently adjusted, the swing amplitude is large, installation is quite steady and convenient, operation by users is facilitated, and use convenience is improved.

A vector spray pipe parallel-connection driving mechanism comprises a parallel-connection mechanism and an adjusting plate mechanism. The parallel-connection mechanism comprises a ball pipe seat, three SPS type branches and a ball sleeve. The ball pipe seat and the ball sleeve are connected in a ball pair mode, the three SPS type branches are circumferentially and uniformly distributed between the ball pipe seat and the ball sleeve, and the two ends of each SPS type branch are connected with the ball pipe seat and the ball sleeve in a ball pair mode correspondingly. The adjusting plate mechanism comprises a ball sleeve, a conical sliding sleeve, three distance adjusting sets and a plurality of adjusting plates, and the distance adjusting sets and the adjusting plates are circumferentially and uniformly distributed between the concave ball sleeve and the conical sliding sleeve; and the distance adjusting sets comprise motors and lead screws, the motors are fixedly connected with the corresponding ball sleeve, motor shafts are in same shaft key connection with one ends of lead screws, the other ends of the lead screws are in threaded connection with the conical sliding sleeve, and the corresponding ball sleeve is in rotary pair connection with the adjusting plates. According to the vector spray pipe parallel-connection driving mechanism, a vector spray pipe is large in swing angle, simple in structure and easy to control, the multiple adjusting plates forming the vector spray pipe can achieve axially-symmetrical contraction and expansion movement, and the rectifying action and airtightness are good.

The invention relates to a novel heading machine cutting device and a working method thereof, and belongs to the field of coal rock crushing of a heading roadway of a stope face. The novel heading machine cutting device comprises a body, a support driving device and an adjusting hydraulic cylinder; the body is provided with a chain wheel, a chain and a scraper; a motor and a speed reducer are arranged in the support driving device; an output shaft of the speed reducer is connected with the chain wheel; the chain wheel is meshed with the chain and drives the chain to rotate; the multiple scrapers are arranged on the chain; cutting teeth for cutting are arranged on the scrapers; one end of the support driving device is rotationally connected with a connecting lug plate at the upper part of a vehicle body of a heading machine through a pin shaft; the other end of the support driving device is connected with the lower part of the heading machine through the adjusting hydraulic cylinder; the upper surface, the lower surface and the end, away from the support driving device, of the body are all working faces; and the ratio of the length to the width of the body is 2:1-3:1. According to the novel heading machine cutting device and the working method thereof, coal rock can be cut by adopting various angles and various cutting areas, so that the cutting area is large, and the purpose of rapidly tunneling a roadway can be achieved.

The invention relates to a clamping device. The clamping device comprises a first pipe body, a second pipe body, a first rod pivoted to the second pipe body, a second rod pivoted to the first rod, a first claw arm, a second claw arm, a third rod, a fourth rod, a nut and a screw, wherein first pipe body and the second pipe body are pivoted to each other, the first claw arm is provided with a firstclamping part and a first connecting part, the second claw arm is provided with a second clamping part and a second connecting part, the first claw arm and the second claw arm are both pivoted to thesecond pipe body, the third rod and the fourth rod are pivoted to the first connecting part and the second connecting part respectively, the nut is pivoted to the third rod and the fourth rod, the screw is in threaded connection with the nut, and the screw is driven by a driving rod through a first universal joint, a fifth rod and a second universal joint. In this way, the driving rod drives the nut to move and controls the first clamping part and the second clamping part to move through the third rod, the fourth rod, the first connecting part and the second connecting part, and then the clamping force can be stably maintained. In addition, the second rod and the first rod are controlled to control the second pipe body, the first clamping part and the second clamping part to swing relativeto the first pipe body.