66results about How to "Improve opening and closing efficiency" patented technology

The invention relates to coal mine gas adsorption control valves and discloses a control valve used on a device for eliminating gas accumulation in a coal mine roadway through cooperation of the mineventilation coal mine gas prevention technology and the gas extraction coal mine gas prevention technology. By adjusting the open-close degree of four sealing moving doors, gas adsorption can be better conducted according to the situation of gas accumulation. The control valve is characterized in that a fixed cylinder is sleeved with one end of a main ring; at least one adsorption block is arranged on the inner wall of the main ring; the other end of the main ring is sleeved with a fixing ring; four through holes are formed in the fixing ring with equal distances; one ends of four supporting frames are arranged on the outer wall of the main ring with equal distances and located under the four through holes in the fixing ring in a one-to-one correspondence mode; each supporting frame is ofan L-shaped structure; arc-shaped grooves are formed in the other ends of the L-shaped supporting frames; supporting plates are arranged in the arc-shaped grooves in the other ends of the supporting frames and are each of an arc-shaped plate structure; and pneumatic actuators are arranged on the supporting plates, and baffles are arranged at one ends of telescopic rods on the pneumatic actuators.

A valve structure includes a valve opening diaphragm and a valve diaphragm. The valve opening diaphragm provides a central valve opening with a plurality of wave shaped projections at the circumference of the valve opening. The valve diaphragm stacks on the valve opening diaphragm and providing at least a pair of elongated circular grooves. The pair of circular grooves is symmetrically disposed with respect to the center of the valve diaphragm and an area enclosed by the pair of circular grooves covers the valve opening.

The invention discloses an automatic forming shear pin device for electronic parts and components and a process of the automatic forming shear pin device. The automatic forming shear pin device comprises a rotary disc, at least two sets of jigs, an opening-closing mechanism, a supply mechanism, a loading mechanism, a forming mechanism, a shear pin mechanism and an unloading mechanism, wherein therotary disc is rotatably arranged on a machine table; the jigs are arranged on processing stations of the rotary disc; to-be-processed components and parts are placed in the jigs, and forming blocks are arranged at sides of the components and parts; the opening-closing mechanism is separately arranged below the jigs; the supply material is arranged on the machine table, and extends to one side ofthe rotary disc; the loading mechanism is arranged at one side of the supply mechanism; and the forming mechanism, the shear pin mechanism and the unloading mechanism are arranged on the machine table, and are sequentially arranged on the side part of the rotary disc in a spaced mode in a peripheral direction. The automatic forming shear pin device realizes transmission turning through an inclinedpushing block, utilizes a roller and a guide arc surface to realize linked opening-closing of a pin clamping assembly and an component and part clamping assembly, and effectively improves automationdegree of the forming shear pin for the components and parts, forming shear pin quality and efficiency.

The invention discloses an air-tight door and a sealing method for large-scale additive manufacturing. The air-tight door comprises an inner door with inner side facing additive manufacturing space aswell as an outer door overlapping on the outer side of the inner door, wherein the outer door and the inner door are connected through a plurality of tensioning mechanisms, and the air-tight door further comprises a plurality of propping mechanisms located between the outer door and the inner door; the outer door can move along horizontal linear guide rails, and the length direction of the linearguide rails is perpendicular to the vertical line between the inner door and the outer door. Compared with the conventional hinged joint sealing mode for manually pushing the air-tight door to rotatearound a rotating center, the opening-closing efficiency can be increased remarkably, time wasted in opening or closing the air-tight door can be reduced, the problem of poor sealing effect when therotating center is too far from a communication part in the prior art is solved, the problem that the sealing effect of the hinged joint type air-tight door and the opening-closing speed are in negative relationship in the prior art is solved, and the sealing effect and the opening-closing efficiency are guaranteed simultaneously.

The invention provides an automatic-restoration skylight system, and belongs to the technical field of data centers. The automatic-restoration skylight system comprises two cabinet top supporting pieces which are arranged front and back and a plurality of skylights mounted between the two cabinet top supporting pieces in a hinged mode. Two rotary shafts of each skylight separately stretch out of the two cabinet top supporting pieces and deviate from the gravity center of the skylight. Electromagnetic locks are mounted on one cabinet top supporting piece, and the number of the electromagnetic locks is the same as that of the skylights. The electromagnetic locks attract skylight frames of the corresponding skylights. The automatic-restoration skylight system further comprises swing rod assemblies and a push rod mechanism, wherein the swing rod assemblies are fixedly arranged below the front rotary shafts of the corresponding skylights; the push rod mechanism comprises an electric telescopic rod mounted at the left end of the front cabinet top supporting piece, a sliding rod horizontally arranged along the front cabinet top supporting piece, and sliding block assemblies fixedly arranged on the sliding rod; the sliding block assemblies are connected with the corresponding swing rod assemblies through connecting pieces; and the telescopic end of the electric telescopic rod pushes the sliding rod to slide rightwards, and all the swing rod assemblies rotate at the same time. The automatic-restoration skylight system has the advantages of being simple in structure and coordinated in operation.

The invention is suitable for the technical field of ball valves, and provides a novel PE sealing ball valve. The novel PE sealing ball valve comprises a valve body, a variable diameter, a valve rod and a valve element; the valve body and the variable diameter are in hot melt welding; the valve element is positioned in accommodating space formed by combining the variable diameter with the valve body; a fixed hole is formed in the valve element; a groove is formed in the fixed hole; multiple first sealing rings are arranged between the valve rod and the valve body; multiple second sealing ringsare arranged between the valve element and the variable diameter; the valve rod is provided with moving space and a limiting groove; a moving rod is arranged in the moving space; matched thread holesare formed in the upper ends of the moving rod and the valve rod; the lower end of the moving rod is a spherical end; a fixed block is arranged in the limiting groove; an elastic piece is arranged between the fixed block and the valve rod; the diameter of the spherical end is larger than the length of the limiting groove; and the fixed block is matched with the groove. The novel PE sealing ball valve can be effectively opened and closed, reduces the damage of the sealing rings, guarantees the tightness thereof, and meanwhile, can effectively adjust the position of the valve rod to prevent random opening and closing thereof.

The invention discloses a railway vehicle, comprising a car body and a top cover, wherein the top cover comprises two cover plates; the two cover plates are respectively rotatably connected with the car body, so that the two cover plates can be close to each other or far away from each other, so that the top cover can be closed or opened; and the top of the two cover plates are provided with a triggering member; Further comprising an opening and closing assembly respectively cooperating with the two triggers, The opening and closing assembly is directly or indirectly fixed to the ground, and comprises a bracket and a track fixed on the bracket. The distance between the two tracks is gradually changed in the longitudinal direction. When the railway vehicle is traveling, the triggering member can move from the inner end part of the track to the outer end part, and can also move from the outer end part of the track to the inner end part, and the cover plate is driven to rotate to open orclose the top cover. The opening and closing of the top cover are automatically triggered by the running of the railway vehicle without additional driving device, which saves the cost, improves the opening and closing efficiency, simplifies the structure of the railway vehicle, lightens the overall weight of the vehicle, reduces the cost and improves the versatility.

The invention discloses a multifunctional operation platform translation type bearing jacking machine. According to the technical scheme, the multifunctional operation platform translation type bearing jacking machine is characterized in that the multifunctional operation platform translation type bearing jacking machine comprises a frame body, a pushing cylinder, a sliding plate, a fixing plate and tension springs; the frame body is arranged to be in a frame shape; the pushing cylinder is arranged on the top of the frame body; the sliding plate is slidably installed between two vertical supporting rods of the frame body, and the bottom of the pushing cylinder is connected with the sliding plate; the fixing plate is arranged at the bottom of the frame body, and the sliding plate is matchedwith the fixing plate; and the fixing plate comprises a first sliding plate and a second sliding plate which are matched with each other, sliding rods are arranged on the portions, corresponding to the fixing plate, of the two vertical supporting rods of the frame body, the portions, corresponding to the sliding rods, of the first sliding plate and the second sliding plate are provided with sliding holes matched with the corresponding sliding rods, and screw rods on the first sliding plate and the second sliding plate are in screw connection fit with screw holes. According to the multifunctional operation platform translation type bearing jacking machine, operation is easy, the manufacture cost is low, and damage generated in the bearing disassembling process can be avoided.

The invention discloses a penetrating type flat gate valve, and relates to the field of flat gate valves. The penetrating type flat gate valve comprises a valve body, an electric push rod and a connecting sleeve, wherein the valve body and the electric push rod are fixedly connected to the two ends of the connecting sleeve respectively, guide wheels are arranged on the periphery of the inner wallof the connecting sleeve, the guide wheels are slidably connected to the surface of a piston rod of the electric push rod, a guide sleeve is arranged at the inlet position of the valve body, and the surface of the piston rod of the electric push rod is movable sleeved with the guide sleeve. According to the penetrating type flat gate valve, a U-shaped movable frame, a limiting sleeve, a through-flow device, a sealing bearing, a communicating plug ,a through-flow hole and a gear ring are arranged, the problems are solved that for the penetrating type flat gate valve driven by the electric pushrod, the valve body can be opened and closed by the parallel movement of a closing part driven by the electric push rod in the linear direction, the moving stroke of the closing part is long, the usetime is long, and the impact on the gate valve when opening and closing by lifting speed is large is solved under the condition that rapid opening and closing are needed.

The invention provides a device with an air outlet, which comprises a plurality of air deflectors arranged along the circumferential direction and the radial direction of the air outlet; and a drivingassembly connected with the air deflector and used for driving the air deflector to do opening and closing motion and/or do rotating motion around the axis of the air outlet. The device is more attractive in appearance, air is output through the gaps between the air deflectors, air output is more comfortable, the driving assembly can drive the air deflectors to rotate around the axis of the air outlet, 360-degree air supply can be achieved, and air output is more uniform.

The embodiment of the invention discloses a retractable sun shading device which comprises installing grooves symmetrically formed in the two sides of a glass top ceiling, wherein a plurality of auxiliary support frames used for achieving support effects are arranged on the installing grooves; a plurality of shun shading plates are erected between the installing grooves positioned at the two sidesof the glass top ceiling; positioning notches used for fixing the positions of the sun shading plates are formed in the installing grooves; rotating shafts embedded in the positioning notches are arranged at the two sides of the sun shading plates; transmission teeth are arranged on the rotating shafts positioned in the installing grooves; transmission structures engaged and connected with the transmission teeth are arranged in the installing grooves; through the corresponding embedment of the positioning notches formed in the installing grooves and the rotating shafts arranged at the two ends of the sun shading plates, the installing efficiency of the sun shading plates is effectively improved, so that the dismounting and the mounting of the sun shading plates are more convenient and faster; and the problem of mounting and dismounting inconvenience of sun shading curtain cloth caused by manual section-by-section installation of sun shading curtain cloth of an integral structure in the prior art is solved.

The present invention discloses an electromagnetic shielding box which comprises a box body, a circuit board, a sliding rail, a sliding rod, a box door, an electromagnetic switch group, a control rod, a placement box, a placement plate, a connection block group, a telescopic pull rod and a mounting plate, sliding grooves are formed in two sides of the interior of the box body, a wave disturbance device is embedded and fixed on the surface of the circuit board, and the sliding rail is fixed in a mounting frame through a hexagon bolt. The sliding rod penetrates through the two sides of the mounting frame, the sliding rod is fixed into the box body through a sliding groove, the top end and the bottom of the mounting frame are fixedly connected with the top end and the bottom of a damping spring, a second mounting groove is formed in the left side of the box door in a penetrating mode, and an electromagnetic shielding layer is fixedly embedded in the front of the box door; and the right side of the box body is movably connected with the left side of the box body through a hinge, the electromagnetic shielding box is provided with the wave disturbances, and the multiple wave disturbances are used for carrying out wave disturbing processing on electronic equipment in the independent containing boxes, so that wave disturbing signals are increased, and the electromagnetic shielding effect of the whole box body is sequentially improved.

The invention relates to the technical field of electroplating production lines, and discloses a tank cover of a plating tank and an electroplating production line. The tank cover of the plating tank comprises a first supporting plate, a second supporting plate, a main shaft, an auxiliary shaft, a driving piece and roller shutters, and the first supporting plate and the second supporting plate are oppositely arranged on the two sides of the opening end of the plating tank in the length direction. The two ends of the main shaft are rotationally arranged on the first sides, in the width direction of the plating tank, of the first supporting plate and the second supporting plate correspondingly. The two ends of the auxiliary shaft are rotationally arranged on the second sides, in the width direction of the plating tank, of the first supporting plate and the second supporting plate correspondingly. The main shaft and the auxiliary shaft are in transmission connection and have opposite rotation directions. The driving piece is in transmission connection with the main shaft. The fixed ends of the two roller shutters are respectively wound on the main shaft and the auxiliary shaft. When the main shaft and the auxiliary shaft rotate synchronously, the free ends of the two roller shutters abut against each other or are far away from each other, so that the opening end of the plating tank is blocked or opened. The tank cover of the plating tank is designed in a split mode, opening and closing are flexible, and the opening and closing efficiency is improved.