44results about How to "Avoid bouncing up and down" patented technology

The invention relates to an improved self-correcting variable parameter fan coil temperature control method and special equipment. The special equipment comprises a coil fan loop, a coil water valve loop, a control panel and a controller, wherein the control panel is internally provided with a temperature setting circuit and a display circuit, the input/output ports of the temperature setting circuit and the display circuit are connected with the I/O ports of the controller directly or by virtue of an RS485 communication interface, the coil fan loop is provided with a direct current brushless fan and a return air temperature sensor, the control input terminal of the direct current brushless fan is connected with one control output terminal of the controller through a serial interface, and the signal output terminal of the return air temperature sensor is connected with one signal input terminal of the controller; and the coil water valve loop is provided with an electric two-way valve, and the control input terminal of the electric two-way valve is connected with two output terminals of the controller. The temperature control equipment disclosed by the invention improves accuracy on fan coil control, has good stability, realizes intelligent regulation management on a fan coil and saves energy.

The invention relates to a modulation coding scheme level adjustment method and system. The method comprises a process of adjusting a modulation coding scheme level between the kth time and a (k+1)th time obtainment of the channel quality detection information of a same transmission channel by the base station. The process comprises the steps of (S1) determining the value of an allowable up-regulation sign, and (S2) dividing a first preset number of adjustment windows between the kth time and a (k+1)th time obtainment of the channel quality detection information, and carrying out the following execution in each adjustment window: calculating the error rate of the transmission channel in the adjustment window, and adjusting the modulation coding scheme level on the basis of the modulation coding scheme level initial value of the adjustment window according to the error rate and the allowable up-regulation sign. According to the method and the system, a problem of inaccurate determination of the modulation coding scheme level caused by the deviation between detected channel quality and real channel quality is improved. The allowable up-regulation sign is used to control an up-regulation process, thus the modulation coding scheme level is maintained to be stable as possible, and fluctuation is avoided.

The invention provides a vein puncture needle which comprises a conduit, a needle probe, a needle holder, a needle handle, and a needle retreating component on the needle handle. The needle retreating component utilizes an operation and control component to control a displacement component to make the needle probe displace in steps and to conveniently allow a second propulsion conduit to enter the proper position of a patient's vein, therefore, raising the success rate of vein puncturing of the puncture needle. The needle retreating component provided by the vein puncture needle has a simple structure and the use of functions is made in a proper order, which not only raises the success rate of vein puncturing of the puncture needle but also effectively protects medical workers from being accidentally injured after the use of the puncture needle.

The invention discloses an electric connector and an assembly method thereof, and the electric connector comprises an insulating body, a first terminal, a second terminal and a metal housing, wherein the insulating body comprises a base and a tongue plate, a through hole is arranged on the tongue plate, a first terminal groove and a fixing groove are arranged on the upper surface of the tongue plate, and a second terminal groove is arranged on the lower surface of the tongue plate; the first terminal and the second terminal are correspondingly inserted in the first terminal groove and the second terminal groove respectively; the contact part of the second terminal penetrates through the through hole upwards from the lower surface of the tongue plate and is further embedded in the fixing groove; and the metal housing is wrapped outside the insulating body. Therefore, by inserting and arranging the first terminal and the second terminal on the insulating body and utilizing the contact part of the second terminal to penetrate through the through hole upwards from the lower surface of the tongue plate and be embedded in the fixing groove, the process steps can be saved, the assembly is ensured to be simple, work stations are less, the labor cost is reduced, the second terminal is ensured to be away from the first terminal, the short-circuit risk can be avoided, and the qualification rate of products can be greatly improved.

The invention discloses an automatic packaging machine with a box sealing device. The automatic packaging machine comprises a rack and a control system; a wrapping forming area and a box sealing area are arranged on the rack, the wrapping forming area is located in front of the box sealing area, and a plurality of unpowered conveying rollers are arranged in the box sealing area in the length direction of the box sealing area; and a two-end box sealing mechanism, a length-direction box sealing system and a width-direction box sealing system are sequentially arranged in the box sealing area in the conveying direction of a carton. The automatic packaging machine with the box sealing device is used for achieving box sealing of the front end, the rear end, the length direction and the width direction of the carton, the automation degree is higher, and the box sealing efficiency is high.

The invention relates to the technical field of fan gear machining, in particular to a positioning tool for fan gear drilling. The positioning tool comprises a base and an indexing mechanism for indexing workpieces, wherein a rotating disc is rotationally arranged on the base, a positioning mechanism for positioning the workpieces is arranged on the rotating disc, and a fixing mechanism for fixing the rotating disc is further arranged on the base; the positioning mechanism comprises a plurality of supporting discs fixed to the top of the rotating disc, and the supporting discs are annularly arrayed on the rotating disc with the circle center of the rotating disc as the array center; and adjusting discs are rotationally connected to the supporting discs, the rotating centers of the adjusting discs deviate from the circle center of the adjusting discs, and the area defined by the adjusting discs is a placement area for allowing the workpieces to be placed. The positioning tool for fan gear drilling can solve the problem that an existing tool can only position gears with one type.

A waste plastic tray dismembering machine belongs to the technical field of saw cutting machines and comprises a rack, a group of disk saw driving mechanisms and disk saws; a disk saw work platen is arranged at the upper part of the rack; the group of disk saw driving mechanisms are arranged on the rack in a staggering mode; the saw disks and the disk saw driving mechanisms are equal in number, and the saw disks are fixed on the disk saw driving mechanisms and probe out of the surface of one upward side of the disk saw work platen; spaces between every adjacent disk saws form the dismembering intervals. The waste plastic tray dismembering machine has an ideal efficiency on waste plastic trays, so the work intensity of a worker is reduced, the waste plastic trays are prevented from being quivered up and down and deviated left and right, and the safety is favorably guaranteed.

The invention discloses a material lifter for building construction. The material lifter structurally comprises a support, conveying belts, a hopper, telescopic rods, a bottom frame and a dischargingtongue plate, wherein the support is vertically mounted on the bottom frame, the support and the bottom frame are vertically welded, the hopper is movably mounted on the support, the telescopic rods are mounted on two sides of the hopper, the conveying belts are mounted on the two sides of the hopper, the conveying belts and the hopper are mechanically connected, the discharging tongue plate is mounted at the bottom of the hopper, and a motor is arranged at the bottom of the hopper. According to the material lifter, a heavy block and a balance stabilizing structure fix a scraping plate, the weight of the tail end of the scraping plate is enhanced, the tail end of the scraping plate is not warped, the scraping plate and the bottom end face of the hopper are completely attached, the scrapingplate does not float, sawteeth are staggered up and down in the moving process of the scraping plate, so that the friction force contact with the scraping plate is increased, and therefore the purpose that the clearing is more clean is achieved; and in addition, at the outmost, a heavy block can be removed to make the scraping plate bounce up from bottom to top, a gap is formed, and when the scraping plate moves left and right, building materials can be removed more smoothly.

The invention provides a belt conveying mechanism with suction force. The belt conveying mechanism with the suction force comprises foot rests, rollers, driving barrels, a belt and a skeleton, whereinthe skeleton is arranged on the tops of the foot rests by welding; the foot rests are respectively arranged at the front end and rear end of the skeleton; the five rollers are arranged inside the skeleton by welding; the belt is tightly clung to the surfaces of the rollers and wraps the five rollers; the driving barrels are nested and welded at the front ends of the rollers; and each roller comprises a fixed rod, a bearing, a rotating barrel, a central post, a groove, a suction force hole and a notch. The belt is adsorbed to the rotating barrels by the suction force generated on the tops of the rotating barrels and is prevented from shaking up and down on the rotating barrels, thus, materials on the belt are prevented from falling from the belt, the friction between the belt and the rotating barrels can be reduced, and the service life of the belt is prolonged; and the suction force of the rotating barrels automatically disappears along with the rotation of the belt, and therefore, the belt conveying mechanism with the suction force is convenient to use by people.

The invention relates to the technical field of oil exploitation equipment, and provides an integral casing head of oil well drilling and production equipment. The integral casing head comprises a shell and an oil tube hanger, wherein the shell is used for being connected with a Christmas tree, the oil tube hanger is arranged in the shell, and the integral casing head further comprises a holding assembly for preventing a casing from moving up and down, the holding assembly comprises a connecting pipe, a first sliding block, a second sliding block, a connecting rod and a rotating rod, the connecting pipe is arranged outside the sleeve in a sleeving manner, the first sliding block and the second sliding block are both arranged on the shell in a sliding mode, the first sliding block and the second sliding block move synchronously relative to the sleeve and are opposite in direction, two ends of the connecting rod are connected with the first sliding block and the connecting pipe, the rotating rod is rotationally connected with the shell, and the first sliding block pushes the second sliding block to move reversely through the rotating rod. According to the technical scheme, the problems of high oil production cost and low oil production efficiency caused by the fact that a slip type casing hanger cannot tightly hold a casing in the prior art are solved.

The invention discloses an anti-backflow drainage system. The system includes a drainage branch pipe, a water collecting pipe and a discharge pipe, wherein the drainage branch pipe, the water collecting pipe and the discharge pipe are connected in sequence, a rectangular-block-shaped anti-backflow box is arranged between the water collecting pipe and the discharge pipe, the upper portion of the anti-backflow box is provided with a water inlet connected with the water collecting pipe, the lower portion of the anti-backflow box is provided with a water outlet connected with the discharge pipe, and the anti-backflow box is internally provided with a floating block which is larger than the water inlet in size and can not pass through the water outlet. Through the arrangement of the anti-backflow box, when backflow of sewage occurs, water flow and characteristics of buoyancy are made use of, the floating block automatically blocks the water inlet of the anti-backflow box, further backflow of sewage is prevented, without affecting free drainage of the drainage system, the problem that backflow is easy to occur in a drainage system in the prior art is solved, the structure is simple, the system is easy to maintain, and no additional energy is consumed.

The invention discloses an improved structure of a traditional Chinese medicine packaging box, which comprises a box body and a box cover matched with the box body. The two symmetrical side walls of the box body are provided with several baffles, the baffles on the two symmetrical side walls are arranged symmetrically, the side walls of the baffles are provided with grooves, and the grooves The bottom of the groove is provided with an elastic structure, and the end of the elastic structure is provided with a clamping block. The top of the box body is symmetrically provided with two card slots, and the two side walls of the U-shaped cover are respectively inserted into the two card slots. Inside. The invention solves the problem that the existing packaging box easily causes the Chinese medicinal materials to shake and thus cause damage.

The invention discloses a suspension type furniture sliding door. The suspension type furniture sliding door comprises rolling wheel devices, wherein the rolling wheel devices comprise rolling wheels,support elements and screw elements, wherein the rolling wheels are arranged on the support elements in a rolling mode, and the support elements are made of plastic; notch parts are arranged on the support elements, and the notch parts are integrally provided with flexible pieces; threaded parts are further arranged on the notch parts; and the screw elements are movably arranged on the support elements through the threaded parts, and at least act on the flexible pieces when the screw elements move. Through the improvement of the structure, the suspension type furniture sliding door has the characteristics of being simple and reasonable in structure, safe and reliable, convenient to use, fast to assemble, long in service life, low in manufacturing cost, and small in size, the connection compactness between all the components is high, and the opening and closing processes are stable and smooth, so that the practicability is high.

The invention provides a vehicle-mounted equipment lift separating device. The vehicle-mounted equipment lift separating device comprises a vehicle chassis, a compartment body and a pair of hydrauliccylinders. The vehicle-mounted equipment lift separating device is characterized in that the vehicle-mounted equipment lift separating device further comprises a bracket, a bracket retracting mechanism, an equipment overturning base and an equipment overturning base auxiliary supporting mechanism; the left end of the bracket is hinged to the upward side of the left end of a compartment body bottomplate, the right end of the bracket is a bracket lifting free end, the bracket retracting mechanism is arranged on the compartment body bottom plate and connected with the left end of the bracket, one end of the equipment overturning base and the left end of the bracket are coaxially hinged to the upward side of the left end of the compartment body bottom plate, the other end of the equipment overturning base is a free end, the equipment overturning base auxiliary supporting mechanism is connected to the left end of the vehicle chassis, an equipment bonding mechanism is arranged on the bracket, the pair of hydraulic cylinders is hinged to the bracket, the pair of hydraulic cylinder columns face downwards and is connected with hydraulic cylinder column connecting seats, and the hydraulic cylinder column connecting seats are fixed to the vehicle chassis. The good protecting effect is achieved on the equipment, the possible situation that in the lifting process, the equipment crosses thevertical limit position and falls, and consequently accidents are caused is avoided, and safety is ensured.

The invention provides a rope reeving device and a system of an endless-rope winch. The rope reeving device comprises a connecting part connected with a mine car and a rope reeving part, the connecting part is fixedly connected with the rope reeving part, the rope reeving part comprises a main body part, and a rope fixing groove used for accommodating a steel wire rope is formed in the bottom of the main body part. Since the steel wire rope is fixed in the rope fixing groove of the rope reeving device, so that the steel wire rope is constantly located below a rope pressing wheel, rope floating is avoided, and further the purpose that the car is dragged actively in the whole process of reciprocating running is realized.

The invention discloses a high-speed rice cake blank arranging machine, relates to the technical field of food processing equipment, and aims to solve the technical problems of low rice cake blank arranging and conveying efficiency and high production cost. According to the technical scheme, a conveying device is arranged on one side of a machine tool, a blank pushing device is arranged on the side, away from the machine tool, of the conveying device, and a blank conveying device is arranged on the machine tool; the conveying device comprises a conveying table and a conveying mechanism, and the conveying mechanism is arranged in the conveying table; the conveying mechanism comprises a conveying belt, a conveying channel is arranged on the upper end face of the conveying table, and the conveying belt is exposed to the conveying channel. The blank feeding device comprises a blank feeding air cylinder, a blocking and pushing plate, a rotating motor and a sliding table. The machine tool is provided with a sliding groove, the blank feeding air cylinder is fixed into the sliding groove, and the telescopic end of the blank feeding air cylinder is fixed to the sliding table. The invention aims to provide the high-speed rice cake arranging machine which can automatically arrange and convey the rice cakes and is efficient and economical.

The invention relates to a seat backrest adjusting mechanism which comprises a base arranged between a backrest and a vehicle body, one end of the base is fixed to the vehicle body, the other end of the base points to the backrest, and a guide groove matched with the rotating track of the backrest is formed in the upper portion of the base; a sliding strip which is inserted into the guide groove,one end of the sliding strip is fixed on the back surface of the backrest, and the other end of the sliding strip points to the vehicle body; a locking piece which is fixed on a vehicle body and is connected with the sliding strip and the base through the locking piece to realize locking; and a jacking and supporting piece which is connected to the base and has elasticity, the jacking and supporting piece is arranged at the bottom of the other end of the sliding strip, and the sliding strip is lifted upwards through the elastic acting force of the jacking and supporting piece, so that a gap between the sliding strip and the base at the sliding fit position of the guide groove is eliminated. The jacking pieces are supported at the bottoms of the sliding strips, and the sliding strips are jacked upwards through elasticity of the jacking pieces to eliminate gaps and avoid vibration.

The miniature fan impeller press-fitting device comprises a positioning bottom plate, a plurality of guide rails are arranged at the upper end of the positioning bottom plate in a bilateral symmetry mode, an upper movable positioning plate is slidably connected between the left guide rail and the right guide rail, and springs are arranged on the guide rails between the upper movable positioning plate and the positioning bottom plate in a sleeving mode; an impeller fixing disc is arranged in the center of the movable positioning plate and elastically fixes an impeller through a plurality of spring plungers, a movable guide pin sleeve is arranged in a shaft hole of the impeller, and a movable guide pin is arranged in the movable guide pin sleeve; a bolt cover is arranged at the upper end of the movable guide pin sleeve; a small spring is arranged between the movable guide pin and the bolt cover; a fan shell positioning cavity is formed in the center of the positioning bottom plate, a fan shell is arranged in the fan shell positioning cavity, a lifting pin is arranged at the bottom of the fan shell, and the upper end face of the lifting pin makes contact with a rotor shaft. In conclusion, the press-fitting device is easy to assemble and disassemble, high in press-fitting precision, good in quality and high in press-fitting safety.

The invention discloses a knitting needle adjusting device of a circular knitting machine. The device comprises a fixed pipe, a moving rod arranged in the fixed pipe and a driving mechanism for driving the moving rod to move up and down, and further comprises a shell seat and a damping system and a fine adjustment system which are arranged on the shell seat, wherein a gear of the driving mechanismpenetrates through a first notch in the right side of the fixed pipe to be meshed with a rack part arranged on the right side of the movable rod; the shell seat is connected to the left side of the fixed pipe; a damping system comprises a damping rod arranged on the shell seat in a swinging mode, a damping spring connected between the damping rod and the shell seat and a damping block pivoted toone end of the damping rod; the damping spring enables the damping block to penetrate through a second notch in the left side of the fixed pipe and tightly abut against the left side of the movable rod; and the fine adjustment system is connected with the other end of the damping rod and used for controlling swinging of the damping rod. According to the invention, a knitting needle can be prevented from floating up and down due to gaps between the teeth of the gear and the teeth of the rack part.

The invention discloses a sludge dryer for environmental governance riverway remediation, and the sludge dryer comprises a fixed sludge drying mechanism and a limit driving motor mechanism, wherein the input end of the fixed sludge drying mechanism is connected with the limit driving motor mechanism. According to the drying machine, when the folded blades rotate and exchange heat with sludge, thedrying heating lamp tube and the pumping pump can be synchronously started, the interior of the drying working cavity is pumped through the long pumping pipe to be in a micro-negative-pressure state,meanwhile, water is heated to become steam, the steam is separated from the sludge and then discharged, and finally sludge drying is achieved; moreover, a current in the annular electromagnet can be switched on during drying, and the annular electromagnet is used for firmly adsorbing the annular iron ring on the outer side of the annular electromagnet, so that the working stability of the folded blades is improved, the folded blades are prevented from generating relative displacement to influence the drying effect when being impacted by sludge, and the mounting stability is also improved; andthe current in the annular electromagnet can be immediately cut off after the work is finished or during maintenance, so the positioning sleeve can be conveniently taken down from the long rotating rod.

The invention discloses an impeller structure submersible pump assembly with the floating balance function. The impeller structure submersible pump assembly comprises a bearing driving mechanism and an auxiliary submersible pump mechanism, and one end of the bearing driving mechanism is connected with the auxiliary submersible pump mechanism. According to the submersible pump assembly, four magnetic rods are further installed on the outer side of a disc body, magnetic rings are fixedly arranged at the positions, close to the edges, of the two ends of the outer side of a positioning sleeve, the magnetism of the magnetic rings is the same as that of the magnetic rods, so that when a driving rotating rod is utilized to drive an impeller structure to rotate at a high speed, the position of the impeller structure can be limited through the magnetic rods arranged on the periphery of the impeller structure, meanwhile, the magnetic rings and the magnetic rods are the same in magnetism, the distances between the magnetic rods and the magnetic rings are equal, according to the principle that like poles repel each other, certain counter-acting force can be generated between the magnetic rods and the magnetic rings, the impeller structure is limited in the centers of the magnetic rods, and therefore, the purpose of balancing the impeller structure is achieved, the impeller structure is prevented from floating up and down during working, and good performance of the impeller structure is prevented from being damaged.

The invention provides a comb tooth safety exchange system of a pit type mechanical three-dimensional parking garage. The comb tooth safety exchange system comprises lifting comb teeth, safety comb teeth and parking space cross beams, wherein the lifting comb teeth and the safety comb teeth are installed in the two oppositely-arranged parking space cross beams in an overlapped manner. The liftingcomb teeth comprise lifting comb tooth main beams, lifting comb tooth stand columns are longitudinally arranged at the two ends of each lifting comb tooth main beam, and lifting comb tooth exchange teeth, lifting comb tooth crane supporting beams and crane platforms are arranged on the lifting comb tooth main beams. The safety comb teeth comprise safety comb tooth exchange teeth crossed with the lifting comb tooth exchange teeth and safety comb tooth sealing plates arranged in the middles of the safety comb tooth exchange teeth. Through innovation of the structure, the lifting comb teeth, thesafety comb teeth and the parking space cross beams are scientifically arranged, and therefore the lifting safety performance of the pit type mechanical three-dimensional parking garage is guaranteed.