1783results about How to "No vibration" patented technology

An air vent register includes a front movable louver structure having a plurality of fins disposed side by side for rotation, a rear movable louver structure disposed at a rear of the front movable louver structure, the rear louver structure having a plurality of fins for rotation arranged side by side and extending orthogonally to the fins of the front louver structure, an operation knob mounted around one of the fins of the front louver structure in a slidable manner, a link mechanism linking the operation knob and the rear louver structure for rotating the fins of the rear louver structure in accordance with a sliding movement of the operation knob, and a rubber-like elastic element arranged between the operation knob and the fin of front movable louver structure equipped with the operation knob in an abutting manner to the fin and the operation knob, the elastic element comprising a projection abutting against the fin and having a through hole for increasing a deformable amount of the projection.

The invention relates to a reciprocating screw vacuum compressor. The compressor is characterized in that a driven wheel is provided with a reciprocating screw transmission mechanism formed by a driven wheel supporting shaft, a gear transmitting and reversing system, hollow shafts, bearing blocks, hollow screw rods, nuts, nut sleeves, connecting sleeves, reversing rods, a spring mechanism and a jaw clutch; tandem piston units in a vacuum compression device formed by cylinders, pistons, sealing connecting pipes, sealing elements A, intermediate separate cavities, sealing elements B, a front separate cavity, a rear separate cavity, three-way intake valves, three-way exhaust valves, intermediate three-way exhaust valves, intermediate three-way intake valves, a main exhaust pipe and a main intake pipe are driven by reversion of the reversing rods in the reciprocating screw transmission mechanism to continuously reciprocate in the cylinders, thus realizing the vacuumizing and compressing functions of the vacuum compressor. The vacuum compressor not only has reasonable design and compact structure, but also has the advantages of energy conservation, no vibration, no noises, conformity with the environmental protection requirement, stable operation, convenience in operation and use and the like.

The present invention provides an electronic cam control method in which displacement points, accelerations, and the like can be smoothly connected between a synchronous control section and an asynchronous control section, without vibration. This is a control method of an electronic cam using a servo motor. There is a synchronous control section in which the control object is moved at a constant speed, and an asynchronous control in which the control object is moved from the end position of the synchronous control section to the start position of the next synchronous control section interval, the control in the asynchronous control interval uses a quintic function for the position control of the electronic cam, uses a quartic function for the speed control of the electronic cam, and uses a cubic function for the acceleration control of the electronic cam, so that the control makes the asynchronous The operation of the electronic cam near the change point of switching between the control interval and the synchronous control interval is smooth.

The invention relates to an acceleration or deceleration control method of numerical control system based on filter technique, which comprises the following steps: planning straight acceleration or deceleration by using the inputted workpiece program data; performing moving average filtering and filter compensation on the planned speed of the straight acceleration or deceleration to obtain a new planned speed value and a position value; performing interpolation on the position value; transmitting the interpolated position value to a servo driver in order to control a servomotor; wherein the moving average filtering of the planned speed of the straight acceleration or deceleration is implemented by adding a moving average filter after planning the straight acceleration or deceleration to control sudden changes of an accelerated speed, particularly comprising the following steps: calculating the speed with a method of planning the moving average filtering speed; changing the smooth degree of the straight acceleration or deceleration by selecting filter length (i.e. controlling the magnitude and the shape of the accelerated speed); and calculating a planned position according to the speed after filtering. The invention solves the vibration problem of a numerically-controlled machine tool during movement, and has the advantages of easy implementation, good compatibility and good flexibility.

The invention discloses an electrochemical refrigerating system. The electrochemical refrigerating system includes an electrochemical compressor (1), a first heat exchanger (2), a first throttling device (3), a second heat exchanger (4) and a gas-liquid separator (5). The gas-liquid separator (5) is arranged between the first throttling device (3) and an outlet of the first heat exchanger (2). Water is adopted as the refrigerating agent for the electrochemical refrigerating system. The electrochemical compressor (1) performs refrigerating agent compression by employing hydrogen ions for carrying water molecules. A hydrogen outlet of the gas-liquid separator (5) is connected to a hydrogen inlet of the electrochemical compressor (1). According to the invention, a problem of comparatively large noise caused by friction and vibration during a motion process of a mechanical compressor in the prior can be solved.

The invention provides a combustion engine without a crank shaft connection rod, which belongs to the technical field of mechanical engineering and resolves the problem that an existing combustion engine is too large in structure, inconvenient to arrange, complex in structure, high in cost and free of considering of vibration brought by reciprocation inertia force. The combustion engine without the crank shaft connection rod comprises a cylinder body, two horizontally arranged racks located on the cylinder body and an output shaft located on the cylinder body. Two ends of each rack are fixedly connected with a piston, a combustion chamber corresponding to the position and the motion direction of the pistons is arranged in the cylinder body, and a gear transmission mechanism capable of switching axial motion of at least one rack into circumferential motion of the output shaft is arranged between the racks and the output shaft. The combustion engine has the advantages of being high in transmission efficiency, free of vibration, simple in structure, reasonable in design and the like.

The present invention relates to high-pressure rotary spraying and core inserting process to form pedestal pipe. The pedestal pile consists of core pile, column and pile depestal. The cylindrical or turned frustum-shaped core pile may be prefabricated reinforced concrete pile, in-situ deposited pile or other pile in different cross section shapes. The pile pedestal below the core pile has diameter greater than that of the core pile. The column has circular, semi-circular of fan-shaped cross section. There may be several auxiliary core piles around the main solid or hollow core pile and several rings in relatively great diameter around the column. The present invention has reasonable design, compact structure, high friction resistance, and wide application in building engineering, bridge engineering, civil engineering, water engineering, etc.

The present invention provides a workpiece three-dimensional dimensions automatic detection system and method based on laser scanning. The system comprises a three-dimensional moving platform, a three-dimensional moving platform numerical control module, a laser scanning sensor, a laser scanning sensor numerical control module, a laser scanning sensor rotating mechanism, a power module and detection software, and belongs to the technical field of three-dimensional scanning and digital analysis. According to the system, the numerical control three-dimensional moving platform is used, so that total dynamic measurement is implemented, manual movement detection is replaced, and detection efficiency is improved; a pneumatic floating slideway is used, so that movement precision is improved; thelaser scanning sensor rotating mechanism is assembled on a Z-axis pneumatic floating slideway, so that deflexion of the laser scanning sensor can be implemented, and a workpiece is scanned from different angles; and a blue line sweeping laser scanning sensor is selected, so that anti-interference is strong, and measurement precision is high.

The invention provides an electrically operated valve, which uses a valve chamber forming component of the press forming piece to reduce cost, and the valve core does not misplace and incline relatively to the valve seat, thus not resulting in eccentric abrasion of the valve seat, valve leakage under closing valve state, undesirable valve vibration and noise, flow rate unevenness and sliding resistance increase, etc. The electrically operated valve includes: a shell (40); a rotor (30) configured on the internal circumference of the shell (40); a valve shaft (60) connected and fixed on the rotor (30); a valve core (61) arranged at the lower end of the valve shaft (60); a guide sleeve (80) configured in the shell (40) for guiding the lift of the valve shaft (60) and the valve core (61); a valve body (70), including a valve chamber forming component (74) and a valve seat component (72), wherein the valve chamber forming component is composed of a press forming piece and forms a valve chamber (71) for the fluid flowing in and out, while the valve seat component is composed of a cutting processing piece and provided with a valve seat part (72b) contacted with and separated from the valve core (61); and a thread feeding mechanism (16), resulting in contact and separation of the valve core (61) and the valve seat part (72b) by following the rotation of the rotor (30), the guiding part (73) for guiding the lift of the valve core (61) forms a whole with the valve seat component (72) through cutting processing.

The invention relates to a mobile type indoor disinfectant vapor disinfection system, which comprises a disinfectant vapor generation device, a wireless intelligent control system, a power-driven device, an environmental monitoring device, an air supply device, a mobile device and a disinfectant storage device. The disinfectant vapor generation device comprises a disinfectant vapor three-level refinement system, a filtering and catalyzing integrated system and a vapor generation control device; the air supply device supplies secondary power for scattering vapor in a space; and the wireless intelligent control system is communicated with the environmental monitoring device, the air supply device and the power-driven device so as to finish the operations of controlling the disinfectant vapor generation device, acquiring environmental parameters, and switching on/off the air supply device and the power-driven device in a disinfection target. The mobile type indoor disinfectant vapor disinfection system can intelligently, comprehensively and efficiently finish the disinfection operation of a closed space of large-sized equipment and is particularly suitable for the disinfection operation of a closed space with long and narrow passages, so that the mobile type indoor disinfectant vapor disinfection system has the advantages of strong maneuverability, high disinfection efficiency, no secondary pollution, and the like.

The invention discloses a construction method for pouring an airtight partition wall between a recovered roadway and a reserved roadway. The airtight partition wall is formed by an inner concrete single wall, an outer concrete single wall and a middle loess concrete wall; and the airtight structure is provided with three layers of walls: the inner side and the outer side are respectively provided with the airtight single wall which is formed in a way that a concrete pump pours concrete into a fiber flexible template, and the loess concrete wall filled by loess-based materials is arranged between the two single walls. The flexible templates are made in advance according to design requirements; a slot is drilled on a preset airtight surrounding rock connecting the roadways; anchor rods are constructed in the slot; after the flexible templates are hung onto the slot through a single hydraulic prop or the anchor rods, the concrete is successively poured into the inner side flexible template and the outer side flexible template by a concrete conveying pipe and a pouring opening through the concrete pump to form the inner single wall and the outer single wall; and after the inner single wall and the outer single wall are poured completely, the loess is poured between the inner single wall and the outer single wall to form the concrete airtight wall. The structure is safe and reliable, the construction cost is low, the construction speed is fast, the labor intensity is low, and the requirements of mine production with high production and high efficiency are met.

The invention discloses a system suitable for metal powder melting material increasing manufacturing. The system is formed by compositing of a fiber laser galvanometer scanning mechanism and a high-speed grinding head. The fiber laser galvanometer scanning mechanism is provided with an XY workbench. The high-speed grinding head is arranged on a Y axis of the XY workbench through a Y axial sliding block. After multiple layers are manufactured on a workpiece, the high-speed grinding head slides along the Y axis of the XY workbench and carries out the feeding motion in the X axial direction at the same time, and high-speed grinding is carried out on the workpiece. The system suitable for the metal powder melting material increasing manufacturing has the advantages that after the high-speed grinding head is composited with the fiber laser galvanometer scanning mechanism, in the material increasing manufacturing process, scanning is carried out on a powder bed through the fiber laser galvanometer scanning mechanism, metal in a selected area is melted, a protrusion and a warpage in the partial workpiece can be removed by the high-speed grinding head, the upper surface of the workpiece can be maintained in smooth, the residual protruding peak on the surface of the workpiece and the plastic deformation degree can be effectively lowered, and the roughness on the surface of the workpiece is favorable to be lowered.

The invention discloses a dynamic balance manipulator comprising a pedestal structure. The pedestal structure comprises a pedestal body and a first rotary mechanism. The first rotary mechanism is in transmission connection with a shoulder joint structure. The shoulder joint structure comprises a shoulder joint body and a first swinging mechanism in transmission with an upper arm structure. The upper arm structure comprises an upper arm body and a second swinging mechanism connected with the upper arm body fixedly and in transmission connection with a forearm structure. An elbow joint structure comprises an elbow joint body, a second rotary mechanism and a third swinging mechanism. The second rotary mechanism and the third swinging mechanism are in transmission connection with a wrist joint structure. The wrist joint structure comprises a wrist joint body and a third rotary mechanism in transmission connection with a clamping hand structure. The invention provides a dynamic balance manipulator making the manipulator system reach dynamic balance.

The invention discloses an automatic single and double-reel take-up device. The device comprises a rack, a reel feeding mechanism, a reel discharging mechanism, a lifting mechanism, a wire reel clamping and rotating mechanism, a transverse wire displacement mechanism and a wire shearing mechanism. The lifting mechanism is arranged at one end of the reel feeding mechanism and located below the wire reel clamping and rotating mechanism. The reel feeding mechanism conveys wire reels onto the lifting mechanism. The lifting mechanism lifts the wire reels to the wire reel clamping and rotating mechanism. The wire reel clamping and rotating mechanism clamps the wire reels and drives the wire reels to perform rotary wire wrapping. The transverse wire displacement mechanism is arranged above the wire reel clamping and rotating mechanism and used for making transverse movement so as to achieve even wire wrapping. The wire shearing mechanism is arranged on the side face of the wire reel clamping and rotating mechanism and used for wire wrapping to compete wire shearing. The reel discharging mechanism is arranged on the side face of the reel feeding mechanism and used for discharging the wire reels. The automatic single and double-reel take-up device is automatic in the whole process so that wire wrapping, wire shearing and reel discharging can be achieved, no manual operation is required, and production efficiency is greatly improved.

The invention discloses an airfoil model force measurement system comprising a pair of supports, a pair of connecting bases, a drag measurement scale, a drag and pitch moment measurement scale, a pair of connecting rods, and a pair of lift measurement devices. The supports are arranged vertically. The connecting bases are respectively arranged on the supports in such a way that the connecting bases can slide along the supports without friction loss. The drag measurement scale is connected to one connecting base. The drag and pitch moment measurement scale is connected to the other connecting base. One end of one connecting rod is connected to the drag measurement scale, one end of the other connecting rod is connected to the drag and pitch moment measurement scale, and the other ends of the connecting rods are connected to the front end of an airfoil model to support the airfoil model between the supports. The lift measurement devices are respectively arranged on the supports, and the lift transfer components of the lift measurement devices are respectively connected to the connecting bases. A double-support system is adopted, and the airfoil model is supported between the supports. The system is of high support rigidity, and the airfoil model has little deformation under the action of gravity and wind load.

The present invention provides a static pressure pile technique for the construction of the basements of the existing building. The present invention includes eight steps: (1) a bearing platform and connecting beams are constructed, and pile-driving holes are arranged on the bearing platform; (2) anchor rods are embedded and reaction frames are installed; (3) precast piles are hoisted and jacks are installed; (4) the precast piles are driven to a designed elevation one by one, clamped and fixed; (5) earth is excavated layer by layer till the elevation of the bottom of the lower floor slab of the newly constructed basement; (6) the vertical force-bearing components, such as posts, walls, etc., are lengthened, and the bearing platform and the connecting beams of the next layer are casted; (7) the precast piles are driven to the next floor, and the reaction frames and the jacks are moved to the next floor; (8) the steps are repeated, and after the construction of the basement of each layer is finished, the reaction frames are disassembled. Applying the construction technique with the anchor rods and the static pressure piles to construct the basements of the existing building, the present invention has the advantages of shockproofness, noiselessness, no pollution, etc., thus furthest reducing the affection on the life of people in the building.

The invention discloses a multipurpose in-situ microscale mechanical property tester under a scanning electron microscope. The mechanical property tester comprises a frame base, a voice coil motor, a loading shaft, a grating ruler, a movable clamp, a fixed clamp, a sliding block and a force sensor. The voice coil motor is installed at one end of the frame base, the grating ruler for measuring displacement of the loading shaft is installed inside the voice coil motor, the loading shaft is driven by a magnet coil inside the voice coil motor to move, one end of the loading shaft is located inside the voice coil motor, and the movable clamp is installed at the other end of the loading shaft. A sliding groove is manufactured at the other end of the frame base, the sliding block is fixed on the sliding groove, the force sensor is installed at one end of the sliding block close to the voice coil motor, and the fixed clamp is installed on the force sensor. The multipurpose in-situ microscale mechanical property tester adopts the voice coil motor, avoids vibration caused by a stepping motor driving mode, can obtain clear amplification factor scanning electron microscope images in a loading state of a testing sample and can conduct in-situ drawing, compressing, bending and fatiguing mechanic performance testing.

The present invention relates to an economical combined type solid drill capable of improving the bonded structure of the combined type solid insert detachable installed on the front end of the drill body, having the advantages of high working accuracy and low cost, and only the condemned insert should be replaced. The bottom surface of the insert base formed on the front end of the drill body is opposite to the bottom surface for detachable installing the insert on the insert base, to form a V-shaped bottoms. The screw holes, for screwing up the holding screw used for supporting the insert, are designed to three-dimensional cone. When the insert is installed on the front end of the drill body, well centering action can be obtained and the manufacturing process is easy, tightening force is satisfying.

The invention relates to a battery cooling method and a battery cooling device, in particular to liquid-nitrogen cooling method and device for an automotive power battery pack. The liquid-nitrogen cooling method for the automotive power battery pack includes directly releasing liquid nitrogen to the surface of the power battery pack and a casing of each battery cell to convert the liquid nitrogen into gas nitrogen, and cooling the surface of the power battery pack and the casing of each battery cell by absorbing a substantial amount of heat in process of converting the liquid nitrogen from liquid into gas. The liquid-nitrogen cooling device for the automotive power battery pack comprises a liquid nitrogen tank (1), a cooling container (8), a connecting pipeline (19), a cooling passage (20), a nitrogen exhaust port (9) and the like. The liquid nitrogen tank (1) is communicated with the cooling passage (20) arranged in the cooling container (8) through the connecting pipeline (19). The liquid-nitrogen cooling method and device for the automotive power battery pack are good in cooling effect, free of consumption of electric energy of the power battery pack, environment-friendly and energy-saving. The cooling method is simple and easy to implement. The cooling device is small in size, the structure is simple and stable, noise and vibration can be avoided, cooling stability is good, and safety is high.

The invention discloses an anti-seismic prefabricated concrete solid square pile which comprises main reinforced bars, hoop reinforcements, anchoring bars, pile caps and concrete. A cross section main body of a pile body is square; the main reinforced bars are formed by sequentially permutating and combining prestress main reinforced bars and general main reinforced bars and penetrate through the pile body along the longitudinal direction of the pile body; the hoop reinforcements are arranged on the outer edges of the main reinforced bars and are spirally squared; the pile caps are respectively arranged at two ends of the pile body and consist of end plates and skirt edges; the main reinforced bars and the hoop reinforcements are connected by welding or binding to form a steel reinforcement cage; two ends of the prestress main reinforced bars are fixedly arranged on the end plate by riveting or using a bolt connecting mode; the general main reinforced bars are separated from the end plate and are shorter than the prestress main reinforced bars; and the anchoring bars are respectively arranged at two ends of the pile body. The anti-seismic prefabricated concrete solid square pile with the structure simultaneously has high press bearing capacity, tensile bearing capacity, shear bearing capacity and flexural bearing capacity and is a concrete solid square pile suitable for industrial mechanical production and is used for high seismic fortification intensity.