249results about How to "Achieve stop" patented technology

The invention discloses an intelligent motion control method and equipment for a treadmill. The intelligent motion control method comprises the steps that a current pressure parameter collected by a pressure sensor is acquired; the current gravity center of a human body is estimated according to the current pressure parameter and the position information of the pressure sensor; the moving changing condition of the human body is confirmed according to the current gravity center of the human body and the gravity center of the human body estimated and confirmed before; the operating state of the treadmill is controlled according to the moving changing condition of the human body. According to the intelligent motion control method and equipment for the treadmill, the pressure sensor is adopted to estimate the gravity center of the human body, and a moving state of a person is judged according to the change of the gravity center of the human body, so that control on the treadmill is realized; accurate control on the treadmill can be realized due to the fact that the moving state of the person can be judged out accurately, automatic start and stop of the treadmill are realized, and automatic adjustment of the operating speed in the operating process is realized, so that the intelligent motion-controlled treadmill which is convenient, safe and energy-saving in application is provided for people.

The invention discloses an intelligent energy-saving dehumidification and thermoregulation system and a control method thereof. The system comprises a dehumidification and thermoregulation machine and at least one regular enclosed space; the regular enclosed space is provided with a first air inlet and a first air outlet respectively; the dehumidification and thermoregulation machine comprises a central controller, an evaporator, a first condenser, an exhaust fan, a filter, a second condenser, an expansion valve, at least one dry air pipeline, at least one wet air pipeline, a second air outlet and a second air inlet; the central controller is respectively connected with a compressor, a three-way valve, an electric heater, a cooling fan, the exhaust fan and a first temperature and humidity sensor. According to the dehumidification and thermoregulation system, air in the system is circulated through the dry air pipeline and the wet air pipeline, and the central controller automatically turns on or off the compressor, the three-way valve, the cooling fan, the exhaust fan and the electric heater, so that the service life of the dehumidification and thermoregulation machine can be prolonged, energy conservation can also be realized, a plurality of regular enclosed spaces in wide distribution can be subjected to centralized automatic dehumidification and thermoregulation, and the dehumidification and thermoregulation efficiency is improved.

The invention relates to the technical field of pipe stock machining, in particular to a hardware pipe stock automatic punching machine. According to key points of the technical scheme, the hardware pipe stock automatic punching machine comprises a working table, a plurality of feeding mechanisms arranged on the working table, a clamping mechanism for clamping and moving pipe stocks on the feedingmechanism, a forming mechanism, a pushing mechanism, a collecting mechanism and a cleaning mechanism, wherein the forming mechanism is used in cooperation with the clamping mechanism and carries outpunching forming on the pipe stocks, the pushing mechanism pushes the pipe stocks to move to the forming mechanism for machining, the collecting mechanism collects the formed pipe stocks, and the cleaning mechanism collects scraps after punching. A receiving portion for transversely placing the pipe stocks is arranged on the pushing mechanism. The pipe stocks are sequentially arranged on the feeding mechanism to be fed. By means of the clamping mechanism, the pipe stocks are moved to the receiving portion from the feeding mechanism, the pushing mechanism pushes the pipe stocks to the forming mechanism to be punched and formed, and the formed pipe stocks are collected through the collecting mechanism. The punching machine reduces manual operation, the production efficiency is high, the punching machine is applicable to butt joint of an assembly line, and the requirement for batch production is met.

The invention relates to a cross-media ramjet based on solid propulsion. The cross-media ramjet based on the solid propulsion is characterized in that a flow path in integrated design with a gas generator is evenly arranged on the outer circumference of the gas generator, thus ensuring not only the normal operation of the ramjet but also the streamline shape of the gas generator; flow path bafflesare driven by a baffle drive motor to control the closing and opening of upper and lower flow path baffles so that air inlet and water intake modes are switched. With a parallel flow path utilized torealize the integration of an air inlet and water intake of the cross-media ramjet, and the starting, shutdown and motion speed of a powder supply device controlled, the cross-media ramjet based on the solid propulsion has the advantages of achieving fuel delivery and stop and flow control, achieving controllable supply of powdered fuel well, and meeting gas flow requirements for different modesand thrust regulation.

The invention discloses an electronic control P step mechanism for an electric vehicle, and relates to an electronic control locking mechanism for parking of the electric vehicle. A locking claw is provided with teeth which are corresponding with the tooth shape of a locking wheel, and the locking wheel is fixed on a gear shaft of a speed reducer; a waist-shaped through hole on the locking claw is provided with a supporting pin shaft; the locking claw and a pulling rod are fixed together to form an assembly member; the pulling rod is the support of a shaft sleeve in a box body hole, and the pulling rod and the shaft sleeve form clearance fit; the screw part on the pulling rod and a nut form a spiral motion pair, and the rotation motion of the nut is converted into the axial motion of the pulling rod; a dynamic motor is fixed on a box body, and an output shaft of the dynamic motor and the nut are fixedly connected; a loosen signal switch and a locking signal switch form a signal feedback system of the moving position of the locking claw; and a P step signal switch is installed at a gear engaging position of the vehicle. By the electronic control P step mechanism provided by the invention, the problem that the exiting electric vehicle only depends on hands to brake, and the reliability performance is poor is solved.

The invention relates to the field of logistics mechanical equipment, particularly to a rotatable submerged automated guided vehicle with an independent jacking structure. The technical purpose is achieved through the technical scheme as follows: the rotatable submerged automated guided vehicle with the independent jacking structure comprises a lifting platform and a driving device I, and further comprises a lifting device which is connected with the lifting platform and drives the lifting platform to rise and fall in the vertical direction under the driving of the driving device I, a rotation transmission device which is connected onto the lifting platform and is connected with a driving device II, and a rotating part which is driven to rotate by the rotation transmission device. According to the rotatable submerged automated guided vehicle with the independent jacking structure, the vertical rising and falling action and horizontal rotation action of a tray rack are mutually independent and do not interfere each other, the structure is stable and the operability is high.

The invention provides a hydraulic transmission device for a plate shearing machine, and relates to a plate shearing machine used in a forging and pressing product. In the invention, an oil outlet of a hydraulic pump (3) is connected with an oil inlet P1 of an electromagnetic relief valve (5) and an oil inlet P2 of a reversing valve (6); an oil outlet A of the reversing valve (6) is connected with a left master cylinder (12), a right master cylinder (13) and a material pressing cylinder (15); an oil outlet B of the reversing valve (6) is connected with a straight-through opening P3 of a one-way valve (9); and the other opening of the one-way valve (9) is connected with an opening P4 of a pressure regulating valve (10) and an oil inlet of a hydraulic return cylinder (11). By adopting the hydraulic transmission device, an upper knife rest can stop at any position, thus greatly facilitating adjustment on clearance uniformity degree of a knife blade, avoiding accidents and being safer and more convenient.

The invention discloses an electric health-care chair provided with a solar cell panel and used for an old man. The electric health-care chair comprises a chair seat and a chair back. Two driving wheels are arranged on the back side under the chair seat. A walking motor, a controller and a storage battery are arranged on a supporting plate under the chair seat. A massaging motor is arranged in the chair back, and a massager driven by the massaging motor is arranged on the chair back. A control handle and a touch display screen are arranged on a control disc of the chair seat. An electrocardiogram monitor, a blood pressure sensor, a temperature sensor and other sensors are arranged on the chair back. A pressure sensor is arranged on the chair back. A control circuit is arranged in the controller and comprises a data acquisition circuit, a microprocessor U1, a power supply circuit and other circuit modules. The electric health-care chair provided with the solar cell panel and used for the old man has the advantages of being capable of detecting the healthy state of a user, analyzing a personal healthy state and monitoring the healthy state of a user, high in intelligence degree and the like.

The invention discloses a remote monitoring and emergency assistance electric healthcare chair for old people. The remote monitoring and emergency assistance electric healthcare chair for the old people comprises a chair body, a driving motor, a photovoltaic generator, a storage battery, an electric massager, a portable medical detection instrument, a first-aid packet, a remote video monitoring and emergency call system, a network terminal and the like. On the basis of retaining the healthcare function of traditional healthcare chairs, the remote monitoring and emergency assistance electric healthcare chair for the old people makes full use the latest scientific achievements and integrates the mature module technology of medical data collection, information microprocessing, remote interaction, intelligent control and the like. In a normal state, the remote monitoring and emergency assistance electric healthcare chair for the old people enables children and relatives to timely monitor the heath state of the old people, and when applied in emergencies, enables an old person in danger to achieve active self-saving and meanwhile to call for help from a 120 emergency center so as to convey location information, electronic medical record and disease indexes as well as to remotely transmit emergency information to the children and relatives, thereby buying time for first aid organization. The remote monitoring and emergency assistance electric healthcare chair for the old people can serve as the electronic nurse and the life guard of the old people.

The invention provides a hydraulic transmission loop of a diagonal cutter shearing machine, which belongs to the technical field of iron and steel sheet and plate processing. The invention is applicable to the hydraulic transmission of rolling production lines or experiment line shearing machines. The hydraulic transmission loop comprises a high-pressure pump source, an energy accumulator controller, a shearing oil cylinder controller, a shearing cutting edge regulation controller and a press plate oil cylinder controller, wherein a pressure oil opening K1 is respectively connected with a pressure oil opening K3, a pressure oil opening K4, a pressure oil opening K11 and a pressure oil opening K14, an oil return opening K2, an oil return opening K7, an oil return opening K10 and an oil return opening K15 are respectively connected with an oil tank, a work oil opening K6 is connected with the rod-free side of a shearing oil cylinder through a hydraulic rubber pipe, the work oil opening K5 is connected with the rod side of the shearing oil cylinder through a hydraulic rubber pipe, the work oil opening K9 is connected with the rod-free side of the shearing oil cylinder through a hydraulic rubber pipe, the work oil opening K8 is connected with the rod side of the shearing oil cylinder through a hydraulic rubber pipe, the work oil opening K13 is connected with the rod-free side of a press plate oil cylinder through a hydraulic rubber pipe, and the work oil opening K12 is connected with the rod side of the press plate oil cylinder through a hydraulic rubber pipe.

The invention discloses a shared assistance shopping cart system and an application method thereof and belongs to the technical field of shopping carts. The system comprises a shopping cart body, a power module, a GPS parking device and a server. The shopping cart body is provided with an open container, and an intelligent display module is arranged on the container; the power module is arranged in the shopping cart body and used for supplying power to the intelligent display module; the GPS parking device is used for parking and charging the shopping cart; the server is connected with the intelligent display module and the GPS parking device through an internet. According to the shared assistance shopping cart system, the intelligent display module and the power module for supplying powerto the intelligent display module are arranged on the container of the shopping cart body, the shopping cart is parked at the GPS parking device and charged, the shopping cart can be parked at multiple sites and used, the shopping cart is randomly selected nearby a supermarket without the limitation of use sites, and the system is convenient to use.

The present invention provides a free piston Stirling power generation system and a control method. The system comprises a Stirling engine, a linear generator, a digital signal processor, a rectifier bridge, and a power switch. The power switch comprises a control converter and an inverter. The Stirling engine is connected to the linear generator which communicates with the input end of the rectifier bridge. The digital signal processor controls the rectifier bridge and the start or stop of the control converter and the inverter according to the received temperature and motion directions and the comparison of current and voltage values and preset values, the system start, power generation or stop is realized. The control method comprises data detection and the control of a system state according to the detected data, an electric energy two-way switching control function can be realized, the smooth switching of a power generation state is achieved, an engine collision problem is solved, and system output electric energy is converted into electric energy which is accordance with a grid-connected standard.

The invention relates to an inter-plate connector assembly and a sub-plate plug thereof. The sub-plate plug comprises a shell and a plug part shell, wherein the plug part shell can forwards and backwards float relative to the shell by a first elastic element, a plug contact element unit is arranged in the plug part shell, the front end of the plug contact element unit is a plug-in end, a part shell baffle block is arranged on the plug part shell, a shell baffle block is arranged on the shell along a left-right direction in a guide moving way and is used for matching with the part shell baffle block in a stop way so as to limit the plug part shell from moving backwards, a baffle block bearing part is arranged on the shell baffle block and is used for being ejected by a socket shell, so that the shell baffle block moves rightwards or leftwards and the shell baffle block gets out of the way of the part shell baffle block in a vertical direction. By the sub-plate plug, the problems that the blocking and the unlocking of the plug part shell are achieved by swinging of an elastic push rod in the prior art to cause that the blocking force of the elastic push rod is limited and the mechanical service lifetime is relatively short are solved.

The invention relates to the technical field of natural gas pipeline machining, in particular to a semi-automatic natural gas pipeline sanding and polishing device. A single motor is utilized for driving a lead screw to rotate through transmission, the motion characteristic of the lead screw is utilized for driving a sanding sleeve to move, by means of cooperation with an air cylinder, a pipelinecan be clamped in a rotating manner, and finally sanding and polishing of the pipeline are completed; a transmission assembly is provided with a clutch assembly composed of the air cylinder, a connecting rod and a clamping rod, by adjusting telescoping of the air cylinder, a conveying part corresponding to a conveying belt is changed, thus rotating and stopping of the lead screw are achieved, thenmoving and fixing of the position of the sanding sleeve are achieved by changing motion of a moving nut, and thus different sanding needs can be met; the inserting and fixing manner is adopted in thesanding plate, the sanding plate cooperates with an electric telescoping rod connected to the top, and thus applicability is wide; and a dust sucking opening is further formed, in the sanding process, flying dust in a sanding box can be sucked out, eliminated, and prevented from further overflowing, the production environment is improved, time waiting for dust settlement is also saved, and the production efficiency is improved.

The invention relates to one round tube with its internal diameter being no less than 1. 7 m, and the treadmill on internal wall of round tube racetrack. There are two different designs of indoor gymnastic type and water entertainment type. The indoor gymnastic type is realized by installing one basement connected with racetrack below racetrack in rolling friction, when users run or walk on internal wall of racetrack, the force and friction force on the internal wall drive the racetrack rotate on the base and realizes continuous running or walking. The water entertainment type is to install aerated float circular ring on two sides of racetrack, the round tube racetrack provides float through float circular ring one its two sides, the amusement individuals run or walk on internal wall of round tube to drive whole treadmill to roll on water. The water aerated type provides possibility for running or walking on water for human being.

The invention discloses a deep blind hole inner diameter automatic measuring device and measuring method. The deep blind hole inner diameter automatic measuring device comprises a front measuring module, a middle stop module and a rear driving module. The front measuring module is connected with the rear driving module through the middle stop module. Firstly the front measuring module, the middlestop module and the rear driving module are placed in the deep blind hole to be measured from the inside to the outside in turn during measurement; secondly, the rear driving module pushes the front measuring module and the middle stop module to move in the deep blind hole, and the front measuring module completes the measurement of the inner diameter of the deep blind hole; and finally the middlestop module automatically stops the measuring device at the bottom end of the deep blind hole, and the rear driving module drives the front measuring module and the middle stop module to reversely move to the orifice. The non-contact front measuring module, the adaptive rear driving module and the automatic middle stop module, are used so that automatic detection and commutation of the inner diameter of the deep blind hole within a certain range can be realized and the measurement accuracy and efficiency of the inner diameter of the deep blind hole can be enhanced.

The invention relates to an inking roller clutch device arranged between a printing roller gear and an ink distributing roller gear with parallel axial lines. The inking roller clutch device comprises a clutch gear engaged with the printing roller gear and the ink distributing roller gear, the clutch gear is rotatably installed on a bearing block, the bearing block is in sliding fit with a shaft,a screw rod is fixed on the bearing block, the screw rod is in threaded connection with a nut, the nut is rotatably installed in a nut seat, and a hand wheel is fixedly connected with the nut. According to the invention, a threaded transmission mechanism is operated manually to drive the clutch gear to axially move, thereby rotating and stopping the ink distributing roller gear, and the inking roller clutch device has a simple structure, reliable performance and low cost.

The invention relates to a sand box overturning device for an iron mold casting production line. The sand box overturning device is characterized by comprising a sand box feeding mechanism, a sand box overturning mechanism and a sand box discharging mechanism, wherein according to a sand box running direction, the sand box feeding mechanism is positioned in front of the sand box overturning mechanism, and the sand box discharging mechanism is positioned behind the sand box overturning mechanism; the sand box overturning mechanism comprises a transverse beam, a rotary ring, a sand box support plate, a rotary ring support frame and a rotary ring driving device for driving the rotary ring to rotate; the transverse beam is connected to the rotary ring; the sand box support plate is connected to the rotary ring; the rotary ring is arranged on the rotary ring support frame; the rotary ring can rotate on the rotary ring support frame; a roller way is arranged on the sand box support plate; the roller way consists of a plurality of rollers. Sand boxes can be overturned without hoisting through hoisting equipment, so operating steps are greatly simplified, and the potential safety hazard is eliminated, and the sand box overturning efficiency is increased.

The invention provides a steel ball impurity removal and classification system. The steel ball impurity removal and classification system comprises a machine box, a plurality of first impurity removal mechanisms, a second impurity removal mechanism, a ball classification mechanism and a control mechanism. A ball inlet is formed in the top of the machine box. A ball blocking door, a first driving device, a ball storage barrel and a plurality of ball storage boxes are installed on the machine box. Each first impurity removal mechanism comprises a filter plate, an impurity guiding plate and a vibration motor. The second impurity removal mechanism comprises an impurity removal box, a screw rod and a second driving device. A ball inlet and a ball outlet are formed in the impurity removal box. The ball classification mechanism comprises a plurality of dust isolation plates, a ball guiding plate, a plurality of adjusting rollers and a third driving device. The control mechanism comprises a first sensing device, a second sensing device and a control device. The first driving device, the second driving device, the third driving device, the first sensing device and the second sensing device are all in communication connection with the control device. A first time value is preset to the control device. The steel ball impurity removal and classification system is capable of simultaneously completing impurity removal and classification of steel balls, good in impurity removal effect and high in work efficiency.

The invention discloses an electronic parking system with four-wheel braking. The electronic parking system comprises a power module, a signal processing module, left-right front wheel power driving modules, left-right rear wheel power driving modules, an EPB switch, a CAN module, a tilt angle sensor and an MCU module, caliper executing mechanisms are composed of a left front wheel caliper executing mechanism, a left rear wheel caliper executing mechanism, a right front wheel caliper executing mechanism and a right rear wheel caliper executing mechanism, and all paths can be independently controlled; the system is powered by a storage battery, a signal of the external EPB switch and a signal of an ignition switch are processed by the signal processing module, and the system is hung on a whole vehicle CAN; and the tilt angle sensor is arranged in the system and is used for detecting the parking angle of a vehicle. The electronic parking system has the beneficial effects that larger parking force is provided for parking of the vehicle, meanwhile, the parking force of a front shaft and a rear shaft can be reasonably distributed according to the vehicle parking gradient and the vehicle head orientation, the parking reliability is guaranteed, so that the service lives of the caliper executing mechanisms are prolonged; and meanwhile, deceleration and stopping of the vehicle can be guaranteed to be realized more quickly under the condition of dynamic parking.

A high-density orchard fertilizing and weeding machine relates to a machine tool used for fertilizing and weeding in an orchard and belongs to the technical field of agriculture and forestry machinery. The machine mainly aims to solve the problems as follows: at present, the labor intensity of manual fertilizing and weeding in an orchard is large and the working efficiency is low; the present digging fertilizer applicator is limited by space among fruit trees due to large size, and generates waste gas to cause serious pollution to the environment during work; and the digging machine has a simplex function, and the unit is low in utilization efficiency. The invention provides the digging fertilizing and weeding machine which operates by using a storage battery to drive a motor. The orchard fertilizing and weeding machine adopts a parallel four-bar mechanism and a lifting motor to jointly control the up-and-down motion of a digging drill bit; a soil collecting box, a fertilizer feeder, a fertilizer feeding baffle and a spring jointly control fertilizing and soil covering after holes are dug, so that the operation efficiency is improved; if the digging drill bit is replaced with a weeding knife, the machine can achieve multiple purposes, so that the use efficiency of the machine is improved; and the machine is mainly used for fertilizing and weeding operations, and particularly suitable for fertilizing and weeding in a high-density orchard.

The invention discloses a locking device used for an electronic-control-free well lid lock and having a stable gear maintaining function. The locking device comprises a lock case, wherein a spindle is arranged on the lock case; the top end of the spindle is connected with a well lid; a chuck is movably arranged at the bottom end of the spindle; a stopping mechanism which is used for stopping rotation of the chuck after the chuck rotates at a set angle is arranged between the chuck and the lock case; a chuck connecting rod is movably arranged on the lock case; an ejector block which is used for pushing the chuck to rotate is arranged at one end of the chuck connecting rod; a stop pin which is used for driving the chuck connecting rod to rotate is arranged at the other end of the chuck connecting rod; two first magnets which are spaced from each other by a set distance are arranged on the chuck connecting rod; and a second magnet is arranged on the lock case. The locking device has the beneficial effect that magnetic maintaining is implemented, a spring bolt with a forked corner piece shifts to change the positions of the two first magnets so as to achieve the purpose of stably maintaining an unlocking state and a locking state, an electromagnet is not required, the structure is simple, and the circumstance that the electromagnet which is not electrified cannot maintain the unlocking state and the locking state is avoided.

The present invention relates to a torque transmission device for a motor vehicle, with a blocking mechanism for locking at least one motor vehicle wheel connected to an output shaft of the torque transmission device. The torque transmission device comprises a differential gearing connected to the output shaft and a drive unit, and said differential gearing and the drive unit are connected to each other effectively in terms of drive via a clutch unit. The blocking mechanism can be brought into engagement with a rotatable component of the torque transmission device, which component is functionally arranged between the wheel and the clutch unit.

The invention discloses a batch type medicine packaging box paper board conveying mechanism which comprises a paper board transferring unit, a paper board lifting unit and a paper board blocking unit.The paper board transferring unit comprises a left side plate and a right side plate, a driving roller and a driven roller are arranged between the left side plate and the right side plate, an annular conveying belt is connected to the driving roller and the driven roller, the paper board lifting unit comprises a first cross beam and a second cross beam, multiple connection plates are rotationally connected to the first cross beam and the second cross beam correspondingly, a top plate is arranged between every two corresponding connection plates on the first cross beam and the second cross beam, the bottoms of the multiple connection plates are connected with a driving mechanism which drives the multiple connection plates to rotationally move, the driving mechanism is used for driving themultiple top plates to move up and down, the blocking unit comprises a limiting plate and a baffle, the limiting plate is provided with a circular arc slot connected with the bottoms of the multipleconnection plates, and the bottoms of the multiple connection plates are movably connected with the circular arc slot through cylindrical pins. The automation efficiency is high, work efficiency is high, and the requirement of mechanical automatic scale production can be completely met.

The invention relates to a starter for an internal combustion engine, comprising a pinion shaft axially displaceably mounted on a drive shaft and being a starter pinion. In order to axially limit the feed displacement of the pinion shaft, a stop device having a stop ring is provided on the drive shaft and a stop counterpart is provided on the pinion shaft. The stop counterpart is implemented as a separately implemented component that can be attached to the inner face of the pinion shaft. The starter pinion forms an insert pinion that can be placed on a lateral carrier segment of the pinion shaft.

The invention discloses a reciprocating shovel type cultivator. The reciprocating shovel type cultivator comprises a gearbox and a diesel engine, and is characterized in that a support is vertically connected to the bottom of a sliding base, a plurality of protruding blocks are uniformly arranged on the support, and one protruding block is connected with an auxiliary supporting block; a knife handle is arranged in a through hole of the auxiliary supporting block, a pressure-bearing spring is arranged in the lower end of the knife handle, the pressure-bearing spring is connected with a scraper, an executing part is arranged on a central rotating shaft, and an elastic gear is arranged at one end of the executing part; the other end of the executing part is hinged to a connecting rod, and the connecting rod is connected with a handle; a through hole is formed in the position, close to the handle, of the connecting rod, and the connecting rod penetrates through a positioning rod to be arranged; a positioning gear lever is arranged at the position, corresponding to the through hole in the connecting rod, of the positioning rod, and a return spring is arranged between the executing part and a base of a handrail; an output shaft is connected with a driving wheel through a traction pin, a traction base is connected with a traction rod through a traction pin, the traction rod is connected with a seat through a traction pin, and a driven wheel set is arranged at the bottom of the seat. The cultivator has the advantages of being simple in structure, practical, convenient to use, high in work efficiency and low in cost and investment.

The invention relates to a sliding cam system having sliding cams (1) which are arranged so as to be non-rotatable yet axially displaceable on a main shaft, preferably on a shaft serving as a camshaft of a reciprocating internal combustion engine, having a preferably electromagnetically operable device comprising at least one extendable actuator pin (6) for displacing the sliding cams into different axial positions by means of slide grooves (3) on the circumference of the sliding cams, wherein the slide grooves interact with the actuator pin (6) and a displacement device (5) is fixedly arranged on a component of the internal combustion engine. The system comprises a device for locking the sliding cams (1) in different axial positions, wherein the locking device comprises at least one recess associated with each axial position, wherein the recesses are in the form of locking grooves (2) on the circumference of the sliding cams (1) and the entry and exit regions of the slide grooves (3) lie in the planes of two adjacent locking grooves (2).