156 results about "Mechanical energy storage" patented technology

The present disclosure relates to a mechanical energy storage for a fluid dispensing device (10), the mechanical energy storage comprising:—a first drive spring (51) extending along a longitudinal direction (z),—the drive spring (51) comprising a first longitudinal end (53) to engage with a housing (10) of the fluid dispensing device (1) and a second longitudinal end (54) opposite to the first longitudinal end (53) to engage with a driver (30) movable relative to the housing (10) along the longitudinal direction (z),—wherein the mechanical energy storage (50) is reversibly transferable into a pre-loaded state by resiliently compressing the first drive spring (51) in the longitudinal direction (z) to thereby induce a resilient deformation of the first drive spring (51) in a first direction (y) transverse to the longitudinal direction (z), and-wherein the mechanical energy storage (50) is transferable from the pre-loaded state into an unloaded state by allowing the first drive spring (51) to relax into or towards an undeformed configuration with regard to the first direction (y) accompanied by a longitudinal expansion of the first drive spring (51).

The invention provides a gravity energy storage scale expansion method, which belongs to the field of electric energy storage such as gravity energy storage and mechanical energy storage, and comprises the following steps: taking a single-machine gravity energy storage system as a minimum standard module capable of independently running, and realizing capacity linear superposition; more than two parallel energy storage driving devices are configured for the same energy storage weight in each standard module to realize stepped increase and decrease of instantaneous power; a central controller receives a power grid dispatching instruction, load prediction data and renewable energy output prediction data in real time, global power requirements are decomposed into charging and discharging tasks of standard modules through a hierarchical control architecture, and a local unit controller executes a weight stroke smooth switching algorithm and a multi-weight synchronous dispatching algorithm. Power output / input is enabled to be continuous without breakpoints; and boosting the electric energy generated by each standard module to a high voltage level matched with the power grid to complete high voltage level networking. The invention has great advantages in the aspects of safety, service life, self-discharge characteristic, overall operation efficiency and the like.

The present invention discloses a mechanical energy storage elevator system based on flywheel energy storage, which includes a load-bearing component and a power component for driving the load-bearing component upward or downward; the load-bearing component includes a car and a counterweight; the power component includes a traction rope, a guide wheel, a driving wheel, a gearbox, a motor and a flywheel; the traction rope is wound around the driving wheel and the guide wheel, and the two ends are respectively connected to the car and the counterweight; the motor is connected to the driving wheel through the gearbox, and the power is transmitted to the driving wheel through the gearbox; the flywheel is connected to the driving wheel through the gearbox, and the mechanical energy of the driving wheel is received and stored by the gearbox. By utilizing flywheel energy storage, the present invention can recycle the gravitational potential energy of the elevator when it is empty and when it is fully loaded. It not only solves the fire protection and safety problems caused by the elevator's electrical energy storage, but also avoids the impact of elevator energy feedback and harmonics on the power grid, improves energy utilization efficiency, reduces elevator energy consumption, and thus reduces building energy consumption.

The utility model discloses a quick release structure matched with a sterile sleeve, which comprises a functional component needing to realize a quick release function, and two plugs are arranged on the functional component; the two plugs and the quick release buckle mechanism are detachably assembled and connected with each other; the quick-release buckle mechanism is an elastic connecting rod mechanism and is connected to the support. The quick-release buckle mechanism is assembled and connected with the quick-release push rod; the end, away from the quick-release buckle mechanism, of the quick-release push rod is fixedly connected with a quick-release button. The quick-release push rod is assembled and connected with a reset mechanism arranged on the bracket, the reset mechanism is a mechanical energy storage mechanism, and the reset mechanism enables the quick-release push rod to always have a trend of keeping an initial position; when the quick-release push rod is located at the initial position, the quick-release buckle mechanism is in the state that the two plugs can be exactly locked. The utility model has the beneficial effects that the structure is simplified, the durability is improved, the sterile operation environment is ensured, the operation stability is enhanced, and an efficient and reliable solution is provided for the quick disassembly and assembly and the sterile operation of medical equipment.

The present disclosure relates to a fluid dispensing device (10), the fluid dispensing device (1) comprising: a housing (10) to accommodate a container (110) filled with a fluid, wherein the housing (10) comprises a sidewall 118) extending along a longitudinal direction (z), —an outlet orifice (3), —a discharge mechanism (130) operable for spray discharging at least one or multiple doses of the fluid via the outlet orifice (3), —a protective cap (12) pivotally supported on or by the housing (10) between an open position and a closed position, wherein when in the closed position the outlet orifice (3) is effectively covered by the protective cap (12), —a mechanical energy storage (50) coupled to the discharge mechanism (130), reversibly transferable between a preloaded state and an unloaded state and configured to store mechanical energy in the preloaded state effective to produce the spray discharging of the fluid, —a biasing mechanism (150) comprising a biasing member (160) operationally coupled to the protective cap (12) and selectively engageable with the mechanical energy storage (50) to transfer the mechanical energy storage (50) into the preloaded state when the protective cap (12) moves into the closed position, —a pinion segment (151) connected to or integrated into the protective cap (12), —a rack segment (161) engaged with the pinion segment (151) and connected to or integrated into the biasing member (160).

The invention discloses a multistage energy storage wave energy hydraulic energy conversion system and a control method thereof, and belongs to the technical field of ocean hydraulic power generation, the system comprises an overhanging frame, a hydraulic cylinder is arranged on the side, away from a shore-based platform, of the overhanging frame, a floater is arranged below the hydraulic cylinder, and a hydraulic PTO system is arranged in the overhanging frame; the hydraulic PTO system comprises an oil tank, a one-way valve set, an energy accumulator set and a generator set, the hydraulic cylinder is connected with the oil tank through the one-way valve set, and the energy accumulator set and the generator set are both connected with the oil tank in series. By adopting the multistage energy storage wave energy hydraulic energy conversion system, the energy accumulators with different volumes are combined with the mechanical energy storage flywheel, so that the pressure pulsation of hydraulic oil in the system is reduced as much as possible, the hydraulic energy conversion efficiency of a wave energy power generation device is improved, more electric energy can be output, the wave energy is subjected to graded energy storage and multistage smooth liquid flow, and the power generation efficiency is improved. The safety and sustainability of the power generation system are improved, and the working efficiency of the hydraulic wave energy conversion system can be improved.

The present disclosure relates to a fluid dispensing device (1) comprising: —a housing (10) to accommodate a container (110) filled a fluid, —a outlet orifice (3), —a discharge mechanism (130) operable for spray discharging multiple doses of the fluid via the outlet orifice (3), —a mechanical energy storage (50) coupled to the discharge mechanism (130), reversibly transferable between a preloaded state and an unloaded state and configured to store mechanical energy in the preloaded state effective to produce the spray discharging of the fluid, —a releasable interlock (70) configured to retain the mechanical energy storage (50) in the preloaded state, —a trigger mechanism (90) operationally engageable with the interlock (70) and operable i) to release a first portion of the mechanical energy stored in the mechanical energy storage (50) when actuated for a first time and ii) to release at least a second portion of the mechanical energy stored in the mechanical energy storage (50) when actuated for a second time.

A computer-implemented system for a system of exercise machines includes a first exercise machine, a second exercise machine, and a mechanical energy storage device mounted to the first exercise machine. An apparatus is configured to alter a resistance of the mechanical energy storage device and dissipate the energy of the mechanical energy storage device. A server includes a processor, memory, and a networking interface. A communication pathway enables the server to communicate with the first exercise machine and the second exercise machine to communicate a virtual position of the first exercise machine relative to the second exercise machine. The server receives data, extracts performance information from the data, and transmits the performance information to the first exercise machine and the second exercise machine to alter the resistance of the mechanical energy storage device.

The invention relates to a mobile work machine, in particular a bulldozer or loader, comprising a hydraulic system, an electric drive system for providing a driving function and / or a working function of the work machine, an energy storage device for supplying the electric drive system with electrical energy, and a cooling system for cooling and / or heating the energy storage device. According to the invention, the energy storage device, at least one electric drive component of the electric drive system, and the hydraulic system are coupled to one another via a common coolant circuit of the cooling system, wherein their waste heat can be dissipated via a common cooler of the coolant circuit. The invention further relates to a method for the controlled discharge of the energy storage device of the mobile work machine.

To provide a mechanical power storage device capable of stabilizing power generation by suppressing fluctuation of generated torque even if thrust changes with a stroke change of an elastic body.SOLUTION: The mechanical power storage device 1 stores power by extending a coil spring 2 (elastic body) by traction by winding of a wire rope 3 (rope-like body) to convert the energy into physical energy, and generates power by kinetic energy when the coil spring 2 is released and restored to an initial state. A guide groove (11) for spirally guiding the wire rope (3) is formed on a tapered surface of the drum (6), and a diameter change due to winding of the drum (6) is made to correspond to a stroke change of the coil spring (2) with a large diameter side of the drum (6) as a winding start side and a small diameter side of the drum (6) as a winding end side, so that a fluctuation in generated torque can be suppressed.SELECTED DRAWING: Figure 1

The invention discloses a mechanical energy storage spring mechanism which comprises an air compression cylinder and a middle ring fixedly arranged in the middle of the inner wall of the air compression cylinder, the middle of the air compression cylinder is sleeved with two threaded rings in a threaded mode, a limiting cylinder is fixedly nested on the threaded rings, a plurality of limiting strips are fixedly arranged on the inner wall of the limiting cylinder, and the two ends of the middle ring are movably sleeved with compression cylinders. A plurality of limiting blocks are fixedly arranged on the side face of the compression cylinder, a large spring is fixedly arranged on the inner wall of the compression cylinder, a fixing frame is fixedly arranged at one end of the large spring, a circular truncated cone frame is fixedly arranged on the side face of the fixing frame, piston covers are movably attached to one end of the circular truncated cone frame, and a prism cylinder is fixedly arranged on the side face of one piston cover. After the large spring deforms, the elastic force of the large spring acts on the piston covers, so that the two piston covers get close to each other in the air compression cylinder, the two piston covers generate compressed air, the compressed air is buffered, the buffering capacity is greatly improved, and the air compressor has the advantage of being high in buffering capacity.

Door closer (10) for automatically closing a door, comprising a housing (12), a drive shaft (30) coupling to the door, a mechanical energy storage device (60) chargeable by linear deflection (94), and a drive mechanism (20) for bidirectional mechanical interaction of the drive shaft (30) and the mechanical energy storage device (60) such that a rotation of the drive shaft (30) in an opening direction (90) corresponding to an opening movement of the door leads to charging of the mechanical energy storage device (60), and conversely, a discharge of the mechanical energy storage device (60) leads to a rotation of the drive shaft (30) in a closing direction (92) opposite to the opening direction (90), characterized in that that the drive mechanism (20) comprises a first gear (22), a second gear (24) toothed with the first gear (22) and a transmission shaft (32), wherein the first gear (22) is connected to the drive shaft (30) and the second gear (24) is connected to the transmission shaft (32) in a rotationally fixed manner, and wherein the drive mechanism (20) comprises a spindle drive (50) with a spindle (34) and a spindle nut (40), wherein the transmission shaft (32) comprises the spindle (34), wherein a rotation of the transmission shaft (32) results in a linear movement of the spindle nut (40) and conversely a linear movement of the spindle nut (40) results in a rotation of the transmission shaft (32), and wherein for charging and discharging the mechanical energy storage device (60) the spindle nut (40) is mechanically operatively connected to the mechanical energy storage device (60).

The invention discloses a spring energy storage device with a prepressing locking function, and relates to the technical field of mechanical energy storage. Comprising a shell, a threaded spindle is rotatably mounted in the shell, a fixing seat is mounted at one end of the threaded spindle through a bearing, the end of the fixing seat is fixedly mounted on the inner wall of the shell, a rotating shaft is fixedly mounted at the end, away from the fixing seat, of the threaded spindle, and the rotating shaft rotationally penetrates through the end face of the shell and is fixedly provided with a transmission head; a pressing plate is fixedly arranged on the surface of the threaded sleeve, and a force storage elastic piece is fixedly arranged on the pressing plate and the end face of the fixing base jointly. The device can achieve energy storage through elastic potential energy of the force storage elastic piece, the pressing plate is pushed to reset after the force storage elastic piece is released and reset, the rotating shaft is driven to rotate through a thread pair of the threaded sleeve and the threaded main shaft, the transmission head rotates to release energy, and through mechanical structure conversion, the structure is simple, safe and environmentally friendly, energy storage and energy release can be circularly carried out; and the energy storage space is improved.

This invention discloses a plastic roll slitting device and method, relating to the field of plastic roll slitting technology. It includes a frame, traction module, tensioning assembly, dual-station rotary frame, cutting mechanism, pressing mechanism, and speed-stabilizing flipping mechanism. Utilizing the mechanical energy storage and fluid damping characteristics of the speed-stabilizing flipping mechanism, smooth, speed-limited rotation is achieved during alternating dual-station operations. By coordinating the dual-station rotary frame with the cutting and pressing mechanisms, this invention allows the continuous winding operation of the equipment to overlap with the manual unloading and bagging operation in parallel time, eliminating equipment downtime. Furthermore, in existing technologies, frequent manual roll changing and pressing are prone to errors due to fatigue; accidental rotation of the winding shaft can trap the operator's hand. This solution requires only one manual loading operation per large roll at the initial winding stage, with subsequent slitting handled by the automatic cutting and pressing mechanisms, significantly reducing high-frequency, dangerous interventions.

1, a fan drives wind wheel blades to form a labor-saving lever structure, power is input into a clockwork spring energy storage bin, constant-speed torque increasing is achieved, and primary torque amplification and mechanical potential energy accumulation are completed; 2, the outer ring of the clockwork spring energy storage bin forms a high-magnification labor-saving lever depending on the maximum force arm at the outer edge, and is meshed and linked with a pinion through an outer ring gear, so that the limitation of increasing and reducing the torque of a conventional gear is broken, and the output torque and the rotating speed are synchronously amplified; 3, power is transmitted to a balance wheel assembly through a crankshaft, the output rotating speed and power of the whole machine are calibrated and stabilized by means of the inertia of a balance wheel, and power fluctuation is eradicated; and 4, by regulating and controlling the rotating speed of the wind wheel and accurately matching the running speed of the gear of the energy storage bin, controllable adjustment of the output rotating speed and torsion is achieved, rated working parameters of the generator are fitted, and continuous and stable power generation is guaranteed. The whole set of system depends on the multi-level lever mechanics principle and is combined with an original force increasing structure for stress of the outer edge of a spring bin, torque superposition and amplification are completed step by step, the gain effect of mechanical force is converted into stable energy output gain, and mechanical energy storage power generation logic with a controllable closed loop and a constant working condition is formed.

A miniature, self-powered, user-powered lighting device, employing mechanical energy storage and incorporating miniature lighting elements which are illuminated on-demand for a limited duration for backlighting or illumination purposes without the need for a battery or other electro-chemical storage device. The device comprising a manual spring loading mechanism, a spiral spring, a manual trigger mechanism, a transmission for increasing the rotational speed, a miniature generator, and at least one light source.

The invention provides an exoskeleton, and relates to the technical field of wearable exoskeletons.The exoskeleton comprises a first arm part and a second arm part, the second arm part is configured to swing relative to the first arm part so as to have a first posture and a second posture, and when the second arm part is in the first posture, the second arm part is configured to swing relative to the second arm part; when the arm part is in the first posture, a first interval is formed between the two far-away ends of the first arm part and the second arm part, and when the arm part is in the second posture, a second interval is formed between the two far-away ends of the first arm part and the second arm part and is smaller than the first interval; the rope penetrates through the first arm part and the second arm part in a fixed-length manner; and the mechanical energy storage mechanism is separated from or connected with the rope through a clutch mechanism, and in the state that the mechanical energy storage mechanism is connected with the rope, the mechanical energy storage mechanism stores energy in the transition period of the second arm part from the first posture to the second posture and releases energy in the transition period of the second arm part from the second posture to the first posture.

The present application relates to rock drilling jumbo technical field, disclose a kind of energy-saving rock drilling jumbo of stuck drill pipe assisted pulling out, including jumbo body, hydraulic rod and guide rail are installed on the drill arm of jumbo body, drill rig is slidably installed on the guide rail, the telescopic end of hydraulic rod is fixedly installed with drill rig, the output end of drill rig is installed with drill pipe, further comprising: connecting mechanism, for connecting drill rig and drill pipe, the connecting mechanism includes the connecting sleeve fixedly installed in the output end of drill rig, connecting barrel is movably installed in the inside of connecting sleeve, the end of connecting barrel away from drill rig is closed structure, the drill pipe is connected with connecting barrel, recoil mechanism, transmission cooperation is formed between the recoil mechanism and connecting mechanism.The present application generates intermittent reverse impact on the end of connecting barrel by impact column, and by mechanical energy storage impact mode of side vibration side retreat, hard pull can be changed into shake loose, and the success rate and efficiency of pulling out stuck drill pipe are significantly improved.

Electromechanical drive (10) for actuating a movable door leaf (60) of a fire door, comprising a motor and gearbox unit (30) which is operatively connected to the door leaf (60) via a power transmission device (50) and causes a movement of the door leaf (60), and a mechanical energy storage device (40) for closing the door, which is charged during an opening movement of the door leaf (60) and discharged by a closing movement of the movable door leaf (60), wherein the motor and gearbox unit (30) assists the mechanical energy storage device (40) during door closing and causes the door to close completely. where in an emergency operation in which a supply voltage (U G ) the motor and transmission unit (30) is switched off, an emergency supply (70) of the motor and transmission unit (30) an emergency supply voltage (U N) provides an emergency power supply (70) comprising a changeover switch (72) and an electrical energy storage device (74), wherein the changeover switch (72) comprises at least one relay contact which, in normal operation, supplies the motor and gearbox unit (30) with the supply voltage (U) G ) and in emergency operation, in which a supply voltage (U G ) the motor and transmission unit (30) is switched off, with the emergency supply voltage (U N ) of the electrical energy storage device (74), characterized in that a control electronics unit (20) monitors and operates the motor and gearbox unit (30) depending on the current operating state and / or a current temperature of the motor and gearbox unit (30) and / or a current direction of movement and / or a current speed and / or a current opening angle of the door leaf (60) and The control electronics (20) determine the current temperature of the motor and transmission unit (30) via a temperature sensor (32) and / or determine the current direction of movement and / or the current speed and / or the current opening angle of the door leaf (60) via a rotary encoder (34) or a position sensor.

In large-scale machine-learning (ML) and / or artificial intelligence (AI) model training, large groupings of GPU servers are tasked with a distributed periodic computational workload. This causes power draw by the GPU servers to periodically and repeatedly fluctuate from nearly zero to full load. The presently disclosed thermo-mechanical power smoothing devices and techniques utilizing a distributed network of high-speed fans as thermo-mechanical energy storage devices for consuming underutilized power and storing it in the form of thermal energy and mechanical energy for future reuse.

The invention relates to the technical field of mechanical energy storage, in particular to a variable rotational inertia telescopic mechanical energy storage method and device with synchronous control. The energy storage method comprises the steps that the multiple swing bodies are connected to the center column through the multiple telescopic pull rods, so that the swing bodies can rotate around the center column; in the rotating process, the telescopic length of each telescopic pull rod is obtained; the synchronism deviation between the swing bodies is determined according to the telescopic length of each telescopic pull rod; according to the synchronism deviation, a corresponding adjusting signal is generated to drive the length of each telescopic pull rod to change, so that the motion of each swing body tends to be synchronous; after the external driving force disappears, the rotation radius of each pendulum body is increased by synchronously increasing the length of each telescopic pull rod; and mechanical energy generated by rotation of the pendulum body is transmitted to the generator and is converted into electric energy. According to the invention, stable operation is ensured while efficient energy storage is realized, and the actual application requirements of the industry are met.

The utility model discloses a lattice type track beam for mechanical energy storage, which is characterized in that a rectangular frame beam consisting of an X-direction frame beam and a Y-direction frame beam is arranged in each floor of a mechanical energy storage system in a gridding manner, and a plurality of lattice type track beam pairs are arranged on the rectangular frame beam of each floor at equal intervals in the same direction; lattice type track beams in the lattice type track beam pairs are symmetrically arranged on the rectangular frame beams. Each lattice type track beam comprises a lattice type main beam, a plurality of bracket beams and a track steel beam, the lattice type main beams stretch across the Y-direction frame beams, and the lattice type main beams are fixedly connected with the X-direction frame beams through the bracket beams; the rail steel beams are arranged on the inner sides of the lattice type main beams and fixed to the bracket beams. According to the lattice type track beam, the process requirements of the surface of the track beam on the flatness and the gradient can be met, and mass blocks and RGVs can be conveniently arranged on the track beam; and the lattice track beam can reduce the construction difficulty, shorten the construction period and ensure the construction quality.

The invention discloses a renewable energy source supply system capable of responding to demands. The renewable energy source supply system comprises a renewable energy source collection device, an intelligent control and monitoring system, an energy storage device, a demand response device, a power grid interaction device and a heat energy conversion and utilization device. The renewable energy source collecting equipment comprises a photovoltaic panel, a wind driven generator, a tidal power generator and an air source heat pump; the intelligent control and monitoring system comprises an energy management system, an intelligent inverter and an Internet of Things sensor. The energy storage equipment comprises electrochemical energy storage equipment, mechanical energy storage equipment and thermal energy storage equipment. According to the renewable energy source supply system capable of responding to the requirements, the wind driven generator is installed, the radar monitoring and noise reduction technology is adopted, the tidal power generator is provided with the ecological flow rate and the fishway, and then the operation noise of the wind driven generator is reduced, so that the influence of the wind driven generator on birds is reduced, and the influence on bird flocks is avoided.

The invention relates to a hole sowing and fertilizing mechanism and a hole sowing and fertilizing method, and belongs to the technical field of agricultural machinery. The invention provides a technical scheme for creating a static operation window through mechanical energy storage release. The mechanism comprises a traction device with an elastic power storage unit, a ditching vertical shaft, a rotary type circular ditch fertilization unit, an IMU (inertial measurement unit) and a ground anchor braking device, wherein the ditching vertical shaft and the rotary type circular ditch fertilization unit are coaxially nested; according to the method, the rack enters a local static state through periodic energy storage and release of the elastic force storage unit, an annular fertilization area is formed around a seed falling point during static, central seed metering is completed, the static state is detected by the IMU to trigger cooperative action, and the static stability is enhanced through ground anchor braking. Spatial separation and annular fertilization of seeds and fertilizers are realized, the utilization rate of the fertilizers is increased, a tractor does not need to stop, the triggering reliability is high, the device is suitable for various hole sowing crops such as corn, soybeans and cotton, and the replacement time is short.

The elevator traction device for the mechanical energy storage system comprises an elevator, a traction wheel, a balancing weight, a diversion sheave, a traction belt and a dynamic pressing wheel braking assembly, the traction wheel is arranged at the bottom of the mechanical energy storage system, the diversion sheave is fixed to the top of the mechanical energy storage system, one end of the traction belt is fixedly connected with the top of the elevator, and the other end of the traction belt is fixedly connected with the other end of the elevator. The other end of the traction belt sequentially bypasses a traction shaft of the traction wheel and a shaft of the diversion sheave and then is fixedly connected with a balancing weight, and the weight of the balancing weight is larger than that of the elevator. The dynamic pressing wheel braking assembly is connected with the traction wheel in a rolling mode and located on the outer side of the traction belt on the traction shaft. According to the elevator traction device, the dead weight of the elevator and the overlarge driving motor are avoided, the investment cost is reduced, meanwhile, the friction force between the traction belt and the traction shaft can be prevented from being reduced when the elevator traction device brakes by adopting the dynamic pressing wheel braking assembly, the braking safety is improved, the elevator traction device can be repeatedly used, and the cost is reduced.

The invention relates to an emergency drive module (10) for an actuating drive in the field of automation, in particular for the linear actuation of a fitting, comprising: a mechanical energy store (11); a first actuator (12.1) and a second actuator (12.2), the first actuator and the second actuator being designed to be driven apart by the energy stored in the energy store (11) when the emergency drive module (10) is triggered in order to actuate an actuating element of a fitting; a dynamics control device which is designed to control the dynamics of the emergency travel of an actuating element of the fitting when the emergency drive module is triggered; and an emergency drive housing (20), in which the mechanical energy store (11), the first actuator (12.1), the second actuator (12.2), and the dynamics control device are provided, a controlled variable of the dynamics control device being adjustable by means of an adjusting element in the event of an emergency drive in the tensioned and mounted state.

A tool includes a mechanical energy storage such as a helical spring, and an ejecting device to be linearly moved between a clamping position and an ejecting position. The ejecting device has a driver element and a shooting device, and an electric motor and a spindle drive driven by the electric motor converts a rotational movement of the electric motor into a linear movement of the ejecting device. A control device controls the rotation of the electric motor, and the ejecting device can move toward the clamping position by rotation of the spindle drive in a first direction of rotation. A locking device can lock the shooting device in the clamping position, and the shooting device can be released and moved toward the ejecting position by actuating the locking device. The driver element can be moved toward the ejecting position by rotating the spindle drive in a second direction.

Door closer (10) for an active leaf (320) of a double-leaf door (300) equipped with a closing sequence control (206), in particular a fire and / or smoke protection door, wherein the door closer (10) can be optionally mounted in a first installation position or in a second installation position and comprises: a closer housing (24) that can be arranged on the active leaf (320); a closer piston (32) that is slidably guided in the closer housing (24) and is in particular loaded in the closing direction (30) by a mechanical energy storage device (28), by which a hydraulic volume (33) of the closer housing (24) is divided into a first hydraulic chamber (34) and a second hydraulic chamber (36); a closer shaft (38) rotatably mounted in the closer housing (24), cooperating with the closer piston (32), which can be coupled or is coupled in a rotationally fixed manner to a closer lever (22) of the door closer (10);a flow channel arrangement (42) preferably formed in the closing housing (24), which fluidly connects the first hydraulic chamber (34) and the second hydraulic chamber (36); a locking unit (26) with a first locking valve (46) arranged in the flow channel arrangement (42) for blocking the hydraulic flow from the first hydraulic chamber (34) to the second hydraulic chamber (36) and thus a closing movement of the closing piston (32) and the actuating leaf (320) in the first installation position, and a second locking valve (48) arranged in the flow channel arrangement (42), which can be controlled independently of the first locking valve (46) for blocking the hydraulic flow from the first hydraulic chamber (34) to the second hydraulic chamber (36) and thus a closing movement of the closing piston (32) and the actuating leaf (320) in the second installation position.

The application discloses a plastic roll material dividing device and method, relates to the technical field of plastic roll dividing, and comprises a rack, a traction module, a tensioning assembly, a double-station rotary frame, a cutting mechanism, a pressing mechanism and a steady-speed overturning mechanism. The steady-speed overturning mechanism is used to realize smooth speed-limiting rotation during double-station alternation by mechanical energy storage and fluid damping characteristics. The double-station rotary frame is arranged to cooperate with the cutting mechanism and the pressing mechanism, so that the continuous winding operation of the equipment and the manual unloading and bagging operation are overlapped in time, and the waiting time of the equipment is eliminated. Meanwhile, the high-frequency manual roll changing and pressing in the prior art are prone to misoperation due to fatigue, and once the winding shaft rotates accidentally, the hands of the operator will be wound in. According to the scheme, manual feeding is only needed once at the initial winding of each large roll, and subsequent roll dividing is completed by the automatic cutting and pressing mechanism, so that the high-frequency dangerous intervention action is greatly reduced.