55results about How to "Avoid not in place" patented technology

The invention relates to a multiple-mould changing system in triangular arrangement, which utilizes a single press assorted with multiple moulds, is capable of realizing quick changing of the moulds and reasonable in arrangement, and overcomes defects of large space occupation and long changing time in the prior art adopting the mode that one workstation corresponds to one mould. A stamping mould device comprises a worktable and the moulds fixed on the worktable. A changing mechanism comprises a stamping station and storage stations which are arranged on two sides of the stamping station and in triangular arrangement respectively, the storage stations are connected with the stamping station through running rails, a preparation station communicated with the stamping station is arranged in the middle of each triangular arrangement, and the worktable is arranged on the running rails. Since the stamping station is combined with the preparation stations and multiple storage stations can be arranged on the periphery of one stamping station, floor area is small and space utilization rate is high. Multiple workpieces can be stamped at the same station so that procedures are reduced, workpiece machining efficiency is increased and workload in carrying the workpieces among the stations is decreased.

The present invention discloses a jig, comprising a body and a stitching device. The body is provided with an assembly platform and a stitching device mounting part which is arranged on one end of the assembly platform. The stitching device is arranged on the stitching device mounting part. The assembly platform is used for placing a sliding cover mechanism to be assembled and a flexible printed circuit assembly to be assembled, and assembles the sliding cover mechanism and the flexible printed circuit assembly of a sliding cover type portable electronic device together. The jig can quickly position and assemble the sliding cover mechanism and the flexible printed circuit module, improves the assembly efficiency, avoids that the integral performance after the assembly is influenced by the misplacement of the affixing of the flexible printed circuit assembly during the assembly process. The jig also can realize the function test for the assembled sliding cover mechanism and the printed circuit assembly through the interconnection to external checkout equipment.

The invention discloses a hot bending furnace for colored glazing glass, a method for preparing hot-bent glass by using the hot bending furnace and the prepared colored glazing toughened hot-bent glass. The hot bending furnace comprises a furnace body (1), a push-pull base (2), an electric heating device (3) consisting of a fixed heating furnace wire (7) and a movable heating furnace wire (8), and an electrical appliance control device (4). In the process of performing hot bending treatment by using the hot bending furnace, the movable heating furnace wire (8) performs local auxiliary heating on the bending position of glass so as to ensure that the glass is completely attached to a mould at the bending position; the radius of a bending arc of the prepared colored glazing toughened hot-bent glass is less than or equal to 90mm, and the bending radian fully meets design requirements; multiple hot bending treatment such as single bending, continuous bending and the like can be realized; and the defects that the conventional hot-bent glass cannot be completely attached to the appropriate position of the mould, the prepared hot-bent glass has only one bending arc and the radius of the bending arc is more than 90mm are overcome.

The invention discloses a positioning structure and a positioning method for casting castings, and belongs to the field of casting. Moulding flasks comprise an upper moulding flask and a lower moulding flask, wherein flask lugs are arranged on the moulding flasks; a pin bush or a positioning pin is arranged on each flask lug; dies comprise an upper die and a lower die; the upper die and the lower die are respectively arranged on base plates; positioning pins or pin bushes are arranged on the base plates of the dies; the pin bushes or positioning pins on the moulding flasks are matched with the corresponding positioning pins or pin bushes of the dies; long-stroke bolts are arranged on the moulding flasks; a positioning convex platform or positioning concave platform is arranged on each die. According to the positioning structure and the positioning method disclosed by the invention, the collision generated when the upper moulding flask and the lower moulding flask are closed, waste and defective products caused by shakeout and excessive metal, and the castings shift caused by flask deviation after the collision of the moulding flasks are avoided, the condition that the closing of the moulding flasks is influenced by flask packing of flask lumps is eliminated, the casting failure phenomenon caused by casting runout is avoided, the labor cost is reduced, and the rate of finished products is improved.

The invention relates to the technical field of conveyors, in particular to an automatic chain belt conveyor. The automatic chain belt conveyor comprises a frame, a driving wheel, a driven wheel, and a speed regulation motor which drives the driving wheel to rotate, wherein the driving wheel, the driven wheel and the speed regulation motor are arranged on the frame, the driving wheel drives the driven wheel to rotate via a transmission belt. The automatic chain belt conveyor also comprises an inductive switch, a timer and a control circuit, wherein the speed regulation motor, the inductive switch and the timer are respectively and electrically connected with the control circuit. The invention can prevent the product on a supporting plate from vibrating, can adjust the conveyance speed of the supporting plate, can prevent the misplacing of the product, can prevent the false operation of the product, can realize accurate stop position of the supporting plate, can control the stop time of the supporting plate, and can operate fully automatically by being matched with an ultrasonic machine, a soldering machine, a transfer printing machine, an oiling gun and other mechanical devices. In addition, the invention has firm overall structure and can be moved freely.

The invention discloses a disconnecting switch with a state indication device. The disconnecting switch comprises a pedestal, a left gate, a right gate, and a disconnecting link; the disconnecting link and the right gate are hinged. The disconnecting switch is characterized in that the switch also includes a disconnecting link state indication device including a first button, a second button, a first indication lamp, and a second indication lamp, wherein the first indication lamp and the second indication lamp are connected with the first button and the second button electrically. A left ejector rod and a right ejector rod are arranged on the disconnecting link. During a closing process, the left ejector rod compresses the first button, the disconnecting link opens and rotates around the right gate thoroughly, and the right ejector rod compresses the second button. According to the invention, the buttons are arranged at the closing position and the disconnecting position of the disconnecting link of the disconnecting switch to determine whether the closing is carried out correctly and disconnection is carried out thoroughly; and an indication lamp and a buzzer are arranged to warn the operator, so that a phenomenon that the closing is not carried out in place or disconnection is not done completely can be prevented. Therefore, the security of the disconnecting switch is improved and the disconnecting switch has the broad application prospects.

The invention discloses an auto-induction cushion block for a film laminating machine and a using method thereof. The auto-induction cushion block comprises a stay bar and a support pillar articulated at the bottom of the stay bar by a hinge pin, wherein a hollow pipe is arranged in the middle of the stay bar, a locating column is arranged in the hollow pipe, a locating spring sheathes the upper part of the locating column, a groove is formed inside the upper part of the stay bar, an induction spring piece is horizontally arranged in the groove, a vertical induction ejection rod is arranged on the stay bar, the induction spring piece is fixedly connected with the top end of the locating column, the end part of the induction spring piece is connected with the bottom end of the induction ejection rod, a bulged fulcrum is arranged under the induction spring piece and in a groove between the induction ejection rod and the locating column, the induction spring piece, the locating column, the induction ejection rod and the fulcrum form a level mechanism, and the induction ejection rod can slide up and down in the stay bar. The elastic level mechanism and the like are utilized to realize resetting of a workpiece above the cushion block, complicated detection measures such as infrared rays are reduced, the equipment cost is reduced, the detection time is shortened and the working efficiency is improved.

The invention relates to the technical field of inductor mounting equipment, in particular to a sheet inserting machine applied to an inductor. The sheeting inserting machine comprises a machine body. The machine body comprises a work panel and a machine case arranged below the work panel. The sheet inserting machine further comprises a guide chute perpendicularly arranged on the work panel, a silicon steel sheet thickening adjustment mechanism, a sheet distribution mechanism, a sheet pushing mechanism and an electric control device arranged in the machine case, wherein the silicon steel sheet thickening adjustment mechanism, the sheet distribution mechanism and the sheet pushing mechanism are arranged on the work panel. The sheet distribution mechanism and the sheet pushing mechanism are arranged on two sides of the guide chute respectively and penetrate the guide chute respectively. Compared with the prior art, the sheet inserting machine achieves functions of automatic sheet distribution and inserting, silicon steel sheets at required increased thickness can be inserted into a framework in one step, and therefore manpower is saved, the sheet inserting efficiency is greatly improved, and the sheet inserting positions are accurate.

The invention discloses a disconnecting switch with counters.The disconnecting switch comprises a base, a left gate, a right gate, a disconnecting link and a disconnecting link state indicating device; the disconnecting link and the right gate are hinged together; the disconnecting link state indicating device comprises a first button, a second button, a first indicator light and a second indicator light, wherein the first indicator light and the second indicator light are electrically connected with the first button and the second button respectively; the disconnecting link is provided with a left ejector rod and a second ejector rod.The disconnecting switch is characterized by further comprising the first counter and the second counter, and the first counter and the second counter are connected with the first button and the second button respectively and used for recording the number of in-place switch-on times and the number of thorough switch-off times of the disconnecting switch.The counters are arranged on the disconnecting switch to record the number of in-place switch-on times and the number of thorough switch-off times, and operation standardization of workers is supervised by comparing the two kinds of data, so that the safety of the disconnecting switch is improved, and the disconnecting switch has good application prospects.

The invention provides mechanical workpiece grinding equipment with a splash-proof waste residue collecting structure. The equipment comprises insertion pieces, insertion plates, embedded pieces, a fixing piece, a fixing plate, a connecting plate, a pushing shaft, a rotating piece and a shaft rod; the middles of the interiors of baffle plates are provided with glass with a transparent structure ina fixed connected manner, the insertion pieces at the bottom ends of the baffle plates are arranged inside an insertion groove on a main body in an inserting manner, the bottom end of one connectingpiece is arranged inside one inserting hole of another baffle plate in an inserting manner, the inner ends of the embedded pieces are connected with the interiors of the insertion plates through springs, and the baffle plates are arranged above the outer ends of the insertion plates and the outer ends of the embedded pieces; and the main body plays a role in supporting the equipment and installingthe baffle plates, so that when the equipment is used, an anti-skid pad can be in contact with the ground, so that the stability of the equipment in use is improved, so that a workpiece is more precisely polished, and the anti-skid pad made of rubber is in contact with the ground.

The invention relates to an electric switching-on device flexibly connected with a residual-current circuit breaker. The electric switching-on device flexibly connected with the residual-current circuit breaker comprises a handle connecting rod, an installation base and a handle. The electric switching-on device flexibly connected with the residual-current circuit breaker is characterized in that the electric switching-on device flexibly connected with the residual-current circuit breaker further comprises a sliding connecting rod, a spring, an oil seal bearing, a fixing pin, a fixing ring, an eccentric output motor, a disc type circular truncated cone, a dowel, a limit switch, guide rails, screws and lateral lugs, the handle connecting rod is in flexible connection with the handle and is fixedly connected with the sliding connecting rod, the lateral lugs are arranged on the sliding connecting rod in an obliquely symmetrical mode, the spring is arranged between the handle connecting rod and the sliding connecting rod, the oil seal bearing is fixedly connected with the disc type circular truncated cone through the fixing pin, the fixing ring is fixedly connected with an output shaft of the eccentric output motor, the eccentric output motor is fixedly connected with the installation base through the screws, the dowel is in threaded connection with a boss of the disc type circular truncated cone, the included angle between the arranging direction of the dowel and the oil seal bearing is 90 degrees, the limit switch is fixedly connected with the installation base, and the two ends of each guide rail penetrate through the sliding connecting rod to be fixedly connected inside the installation base. The electric switching-on device flexibly connected with the residual-current circuit breaker has the advantages of being high in switching-on and switching-off efficiency, high in reliability and high in stability during manual or automatic switching-off and switching-on.

The invention discloses a frequency modulation parameter optimization method for a pumped storage unit, and the method comprises the steps: constructing a simulation model of a to-be-modulated pumpedstorage unit, and the simulation model comprising a fractional order PID controller and a fuzzy inference module; applying preset frequency disturbance to the simulation model, and carrying out optimizing through a search algorithm to obtain an optimal frequency modulation parameter of the controller and an optimal membership function of the fuzzy inference module; calculating and controlling thefuzzy inference module to adopt an optimal membership function based on the unit frequency deviation and the differential of the unit frequency deviation under the optimal frequency modulation parameter to obtain the correction amount of the optimal frequency modulation parameter; and correcting the optimal frequency modulation parameter by adopting the correction amount to complete optimization of the frequency modulation parameter. According to the method, the fuzzy fractional order PID controller is introduced, the frequency modulation parameter can be obtained through optimization according to the frequency deviation adjusting algorithm, rotating speed fluctuation can be effectively and rapidly restrained, and the problem that the frequency modulation efficiency is low due to the factthat only the frequency modulation parameter obtained through algorithm optimization is adopted for frequency modulation control is solved.

The invention provides a clamping device of an injection molding machine mould, and the clamping device can be used for realizing quick, safe and reliable clamping of the mould, so that the clamping efficiency of the mould can be effectively improved, tool reserve can be reduced, and the production cost can be reduced. The clamping device comprises a compaction bolt, a clamping block and a cushion block, wherein the thickness of the cushion block is same to the thickness of flange of a mould installing end, and the cushion block is installed between the clamping block and an injection molding machine installing surface in a cushioning manner; the compaction bolt penetrates through the clamping block and compacts the clamping block on the mould and the cushion block, thereby clamping the mould on the injection molding machine installing surface. The clamping device provided by the invention is characterized in that the cushion block is connected with the clamping block through a side connecting block, and the clamping block and the cushion block are respectively connected with the side connecting block through a shaft pin I and a shaft pin II.

The invention relates to a flue-cured tobacco intertill hiller which comprises a pair of hilling wheels, a shaper and a traction power mechanism, wherein the pair of hilling wheels are mounted on the left side and the right side of the traction power mechanism; the hilling wheels comprise gear blades which are spirally mounted at end parts of a transmission shaft, and rotary blades which are mounted at end parts of the gear blades; the shaper is mounted below the rear side of the traction power mechanism; the shaper is further provided with a guider and scraper plates; the scraper plates are movably mounted at the rear part of the guider; fastening devices for fixing the opening amplitude of the scraper plates are arranged on the scraper plates. The flue-cured tobacco intertill hiller has the advantages that firstly, by adjusting the distance between the two scraper plates, the problems that roots of tobacco are damaged by mechanical operation as the furrow distance is too small, or hilling is insufficient as the furrow distance is too large can be effectively solved; secondly, as the distance between the scraper plates can be adjusted, furrow depth and furrow straightness can be ensured, and a shaped field can be attractive in appearance; thirdly, due to arrangement of the hilling wheels which can increase the furrow depth and is good in adaptability, the soil holding force can be increased, the problem of different soil textures can be solved, and the furrow bottom depth can be ensured.

The invention discloses an auxiliary feeding pushing device of a storage battery grid. The auxiliary feeding pushing device comprises a weight, a first reversing piece, a guide shaft, a fixing board and a pushing board. The weight is arranged vertically and is used for supplying a force in the direction of gravity, a pulling rope is connected with the weight, one part of the pulling rope winds around the first reversing piece and then is arranged horizontally, and the pulling rope is used for changing the direction of a pulling force so that the fixing board can be pulled to slide conveniently. The guide shaft is fixedly arranged in the feeding direction of a conveyer line, the fixing board is connected on the guide shaft in a sliding mode, and one end of the pulling rope is fixedly connected with the fixing board after winding around the reversing piece. The pushing board is hinged to the fixing board, and a pushing part which extends to the conveyer line and pushes materials is arranged on the pushing board.

The invention discloses a portable scroll music stand. The technical problems that an existing spectrometer turning mechanism has complex structure, huge structure and poor practicability are solved.The portable scroll music stand comprises a panel connected to a bracket, a book groove clamping a fixed music score is formed in the middle of the panel, and a side lifting mechanism and a page turning mechanism are arranged on the panel. The side lifting mechanism comprises a friction wheel arranged on the side part of the panel, the friction wheel is in contact with the outer side page side, the friction wheel is driven by a friction wheel stepping motor, the page turning mechanism comprises a page turning stepping motor arranged on the upper side part of the panel, and the page turning stepping motor is arranged between the book groove and the friction wheel. An output shaft of the page turning stepping motor is connected with an L-shaped page turning rotary rod, the friction wheel stepping motor is connected with a singlechip microcontroller through a friction wheel stepping motor switch, and the page turning stepping motor is connected with the singlechip microcontroller separately through a page turning stepping motor forward switch and a page turning stepping motor reversal switch. The portable scroll music stand is simple in structure and small in size, and automatic pageturning of a closing and opening type music score and a scroll type music score can be realized.

The invention discloses a trigger switch, which relates to the trigger switch device field. The trigger switch comprises a housing, a protection switch, a switch rotation shaft, a trigger, a trigger rotation shaft and a torsion spring. The protection switch comprises a switch crank and a switch gap wherein the switch crank is installed inside the housing by the switch rotation shaft and the switch gap is arranged at one end of the switch crank. The trigger is arranged at the inner side of the housing by the trigger rotation shaft. One side of the trigger close to the switch gap is provided with a boss. Through the rotation of the switch crank and the trigger, it is possible to move the boss of the trigger to the inner part of the switch gap. The torsion spring is fixedly arranged between the inner side of the housing and the trigger. The design of the trigger switch of the invention allows simple, safe and reliable operations. Just with one index finger, a user of the trigger switch can complete the buckling of the trigger and the switching between the locked state and the free state of the protection switch. Particularly, when relieving the dead-lock state, the index finger of the user has to be lifted by some angle from the trigger, which effectively avoids the erroneous contact in the use of the trigger.

The invention discloses a glove box damping force detection tool, and aims to solve the problems that assembly is not in place, neglected assembly cannot be detected, and damping gear resistance is unqualified. The glove box damping force detection tool includes a base plate, an opening mechanism arranged on the rear side of the upper surface of the base plate, two first fixing mechanisms arranged on the left side and the right side of the upper surface of the base plate and a closing mechanism arranged on the rear side of the upper surface of the base plate. A stroke detection mechanism is arranged on the first fixing mechanism; the opening mechanism comprises an opening fixing base, an air cylinder set connected with the opening fixing base and an opening hook arranged on the air cylinder set, the opening fixing base is fixed to the base plate, the opening hook comprises a fixing part and a hook part used for opening the glove box, and the fixing part is connected with the air cylinder set. The glove box damping force detection tool has the beneficial effects that the stroke detection mechanism is used for detecting the damping buffering force when the glove box is opened and closed, and improper assembly, neglected assembly and unqualified damping gear resistance are prevented.

The invention provides a cigarette circulation box sealing device. The device comprises a conveying belt used for conveying a circulation box, wherein the side face of the circulation box is provided with an opening, the opening is connected with a box cover made of cloth, the top face of the circulation box and the box cover are connected with hook-and-loop fasteners which match each other correspondingly, a jacking air cylinder with an upward output shaft is connected to the lower portion of the side face of the conveying belt, the output shaft end of the jacking air cylinder is connected with a jacking plate, a horizontal box closing rotating shaft is rotatably connected to the upper portion of the jacking plate, a box closing supporting plate is connected to the outer side face of the box closing rotating shaft, one end of the box closing rotating shaft is connected with a rotating air cylinder, one side of the conveying belt is connected with a photoelectric sensor, the device further comprises a PLC, and the PLC is electrically connected with the photoelectric sensor, the jacking air cylinder and a rotating air cylinder. The device can realize automatic cover closing and box sealing of the circulation box, saves time and labor, and is high in working efficiency and good in box sealing effect.

The invention provides a cambered surface machining device and cambered surface machining method for 2.5D glass, and relates to the field of glass panels. The cambered surface machining device for the2.5D glass comprises a base used for placing a glass substrate, a probe used for detecting the surface height of the glass substrate, and a grinding tool used for machining the glass cambered surface, wherein the probe and the grinding tool are respectively connected with a controller. According to the cambered surface machining device, the technical problem of low machining yield, caused by thecambered surface machining method, of a 2.5D glass cambered surface can be relieved, and the purpose of increasing the cambered surface machining yield is achieved.

The invention relates to the technical field of electrode holders, in particular to an electrode holder mold-repairing compensation device and method and an electrode holder device. When the electrodeholder mold-repairing compensation device needs to be replaced with a new electrode cap in an original state of an electrode holder, a Z-axis servo motor records a present absolute value encoder value and stores the present absolute value encoder value in an allocation data area, for example, a present figure is a first record value; after mold-repairing is completed, the Z-axis servo motor absolute value encoder value in the original state of a pneumatic electrode holder after the mold-repairing is recorded as a second record value, at the moment, the loss of the electrode cap after the mold-repairing is a third record value which is equal to the first record value minus the second record value, and a value of the third record value is transmitted to a Z-axis position value of a walkingtrack; and the lost value after mold-repairing is compensated by the Z-axis value in the original track to reach precise positioning at the Z-axis position. The electrode holder mold-repairing compensation method has the above advantages compared with the prior art. The electrode holder device has the above advantages compared with the prior art.

The invention discloses a visual bronchoscope. The visual bronchoscope comprises a connecting pipe, a tracheal catheter, a control device and a camera, wherein the tracheal catheter is connected withthe connecting pipe, the diameter of the tracheal catheter is variable, and the tracheal catheter is suitable for being inserted into the tracheal intubation; the control device is arranged at the connecting pipe, is connected with the tracheal catheter and is used for adjusting the diameter of the tracheal catheter; the camera is arranged at the position, away from the opening of the connecting pipe, of the tracheal catheter in the axial direction, a signal line is arranged on the camera, and the signal line is adhered to the inner side walls of the tracheal catheter and the connecting pipe and extends outwards to be connected with a display device. The visual bronchoscope is advantaged in that the tracheal catheter and the camera can guide retreating of the tracheal intubation, the situation that retreating of the tip end of the tracheal intubation is not in place, and the diameter of the tracheal catheter is variable is avoided, and when the diameter of the tracheal catheter is increased, the tracheal catheter can be used as a breather pipe; therefore, oxygen deficit of a patient caused when the tip of the trachea cannula retracts too much to the outside of the glottis can be avoided.

The invention discloses a preload measuring device for cement cutting equipment motor production. The main body is provided with a support plate, and a turret is provided on the support plate, a slideway is provided on the upper surface of the turret, a support frame is provided on the slideway, a measuring component is provided on the device body, and a second screw rod is provided on the device body , the bottom of the second screw rod is provided with a briquetting block; the overall structure of the present invention is simple, and the adjustment before measurement is very convenient. When the preloading amount is measured, the error is small, the test time is short, and the workload and labor intensity of the staff are reduced. , improve work efficiency, and when the device body is in use, it avoids manual finalization, avoids improper pressing, accurate detection results, convenient use, and strong practicability.

The invention discloses a sheet-shaped inductance automatic soldering machine, the structure of which includes a frame, a motor, a tin cylinder, a mounting platform, a soldering platform, a welding head, and a tin liquid head. The frame is an L-shaped structure, and a The soldering platform is equipped with a motor on the vertical end of the frame, which drives the welding head and the tin liquid head. Tin liquid pipe, guide pipe, running wheel, slide rail, first wiper body, contact head body, second wiper body, the contact head body of the present invention and the running wheel work together, and the running wheel drives the contact head body to move along the slide rail, In order to achieve ductile soldering that satisfies different sizes of transformers, at the same time, during the extension, the contact body needs to pass through the first wiper and the second wiper respectively, and under the joint action of the two wipers, both can Carry out timely mechanical cleaning on the surface of the contact head body to prevent the problems of insufficient cleaning and accidental burns caused by manual cleaning.

The invention provides a supporting part for a urine collecting device. The supporting part comprises a fixing strip and two mounting strips connected with the fixing strip. A plurality of columnar protrusions are respectively arranged on the mounting surfaces of two sides of the center line of the fixing strip, the two mounting strips are symmetrically arranged, every mounting strip is provided with a plurality of holes corresponding to the columnar protrusions, and the top end of every protrusion is provided with a small edge plate extending in the direction perpendicular to the length direction of the fixing strip. Every hole is formed by combining a kidney-shaped round hole with the long axis in the length direction of the mounting strip and a strip hole, wherein a small buckling plate clamped with the small edge plate extends out of a short edge of the strip hole. The position of the upper edge of every mounting strip corresponding to the fixing strip is provided with an anti-retreating mechanism with a pawl matched with a ratchet. After the mounting strips adhere to the mounting surfaces to be installed to be in place, the small buckling plates restrain the small edge plates in the direction perpendicular to the mounting surfaces, and the anti-retreating mechanisms restrain the mounting strips so that the mounting strips can slide and retreat in the length direction of the mounting surfaces. The supporting part has the advantages of being convenient to assemble and not being detached easily.

The invention discloses a cement house construction system. The cement house construction system comprises a pouring mold defined by vertical steam curing mold plates, wherein a connecting rack is erected on the inner area of the pouring mold; and the lower portions of inner mold plates and the lower portions of outer mold plates forming the steam curing mold plates are clamped through inner and outer mold linkage clamping devices, the adjacent steam curing mold plates are locked through adjacent edge alignment locking devices, and the inner mold plates and the outer mold plates of the steam curing mold plates are subjected to mold assembly or mold disassembly through a first mold assembly and disassembly device and a second mold assembly and disassembly device correspondingly. By means ofthe cement house construction system, the construction quality is improved, the mold assembly and disassembly time is greatly shortened, and accordingly the production efficiency is improved. The cement house construction system is suitable for the technical field of cement house construction.

The invention discloses a contactor type mechanical emergency starting device, and the device comprises a bottom plate; a plurality of alternating current contactors are arranged on the bottom plate,and a shell covers each alternating current contactor; a driving device and a travel switch are arranged above the shell, and a linkage device is arranged below the shell; the linkage devices are driven by the driving devices to reciprocate up and down, the right lower portions of the linkage devices correspond to contacts of the alternating current contactor, the linkage devices make contact with the contacts when moving downwards and are far away from the contacts when moving upwards, and the driving devices are in linkage. The device is simple in structure and convenient to operate, operation of multiple devices in different states is achieved, the operation duration is greatly shortened, and precious time is saved for emergency situations.

The invention discloses a method for realizing decelerating brake of a rail electric vehicle. The method comprises a step of arranging a pedestal, vehicle inner and outer brake calipers, a motor, a big crankshaft and a link transmission mechanism, and also comprises the following steps: (1) flexibly connecting the motor with a translation mechanism to convert the rotation of the motor into linear motion, pushing the link transmission mechanism through the translation mechanism via a transmission link to relieve and brake wheels of the rail electric vehicle; (2) meanwhile moving the transmission link under pushing of the translation mechanism to realize an effect of increasing thrust to naturally slow down a brake end point, and acting most of impact force stressed on the transmission link on the translation mechanism and a mounting seat thereof when the transmission link is close to or at the brake end point. The invention also discloses an electric vehicle decelerator device and application of the lead screw transmission mechanism. The brake process is stable, inadequate brake caused by kinematic accumulative error can be effectively avoided, the impact and the vibration to the motor are effectively reduced, a motor shaft is protected, and the brake precision is improved.